| File: | root/firefox-clang/obj-x86_64-pc-linux-gnu/layout/generic/./../../../layout/generic/nsIFrame.cpp |
| Warning: | line 3856, column 7 Value stored to 'createdContainer' is never read |
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| 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| 4 | |
| 5 | /* base class of all rendering objects */ |
| 6 | |
| 7 | #include "nsIFrame.h" |
| 8 | |
| 9 | #include <stdarg.h> |
| 10 | |
| 11 | #include <algorithm> |
| 12 | #include <type_traits> |
| 13 | |
| 14 | #include "AnchorPositioningUtils.h" |
| 15 | #include "LayoutLogging.h" |
| 16 | #include "PseudoStyleType.h" |
| 17 | #include "RubyUtils.h" |
| 18 | #include "TextOverflow.h" |
| 19 | #include "gfx2DGlue.h" |
| 20 | #include "gfxUtils.h" |
| 21 | #include "mozilla/AbsoluteContainingBlock.h" |
| 22 | #include "mozilla/Attributes.h" |
| 23 | #include "mozilla/CaretAssociationHint.h" |
| 24 | #include "mozilla/ComputedStyle.h" |
| 25 | #include "mozilla/DebugOnly.h" |
| 26 | #include "mozilla/DisplayPortUtils.h" |
| 27 | #include "mozilla/EventForwards.h" |
| 28 | #include "mozilla/FocusModel.h" |
| 29 | #include "mozilla/IntegerRange.h" |
| 30 | #include "mozilla/Logging.h" |
| 31 | #include "mozilla/Maybe.h" |
| 32 | #include "mozilla/PresShell.h" |
| 33 | #include "mozilla/PresShellInlines.h" |
| 34 | #include "mozilla/ReflowInput.h" |
| 35 | #include "mozilla/RestyleManager.h" |
| 36 | #include "mozilla/ResultExtensions.h" |
| 37 | #include "mozilla/SVGClipPathFrame.h" |
| 38 | #include "mozilla/SVGIntegrationUtils.h" |
| 39 | #include "mozilla/SVGMaskFrame.h" |
| 40 | #include "mozilla/SVGObserverUtils.h" |
| 41 | #include "mozilla/SVGTextFrame.h" |
| 42 | #include "mozilla/SVGUtils.h" |
| 43 | #include "mozilla/ScrollContainerFrame.h" |
| 44 | #include "mozilla/SelectionMovementUtils.h" |
| 45 | #include "mozilla/ServoStyleConsts.h" |
| 46 | #include "mozilla/Sprintf.h" |
| 47 | #include "mozilla/StaticAnalysisFunctions.h" |
| 48 | #include "mozilla/StaticPrefs_dom.h" |
| 49 | #include "mozilla/StaticPrefs_layout.h" |
| 50 | #include "mozilla/StaticPrefs_print.h" |
| 51 | #include "mozilla/StaticPrefs_ui.h" |
| 52 | #include "mozilla/TextControlElement.h" |
| 53 | #include "mozilla/ToString.h" |
| 54 | #include "mozilla/Try.h" |
| 55 | #include "mozilla/ViewportFrame.h" |
| 56 | #include "mozilla/ViewportUtils.h" |
| 57 | #include "mozilla/WritingModes.h" |
| 58 | #include "mozilla/dom/AncestorIterator.h" |
| 59 | #include "mozilla/dom/CSSAnimation.h" |
| 60 | #include "mozilla/dom/CSSTransition.h" |
| 61 | #include "mozilla/dom/ContentVisibilityAutoStateChangeEvent.h" |
| 62 | #include "mozilla/dom/DocumentInlines.h" |
| 63 | #include "mozilla/dom/ElementInlines.h" |
| 64 | #include "mozilla/dom/HTMLDetailsElement.h" |
| 65 | #include "mozilla/dom/Range.h" |
| 66 | #include "mozilla/dom/Selection.h" |
| 67 | #include "mozilla/dom/Text.h" |
| 68 | #include "mozilla/gfx/2D.h" |
| 69 | #include "mozilla/gfx/PathHelpers.h" |
| 70 | #include "mozilla/intl/BidiEmbeddingLevel.h" |
| 71 | #include "nsAnimationManager.h" |
| 72 | #include "nsAtom.h" |
| 73 | #include "nsBidiPresUtils.h" |
| 74 | #include "nsCOMPtr.h" |
| 75 | #include "nsCSSFrameConstructor.h" |
| 76 | #include "nsCSSProps.h" |
| 77 | #include "nsCSSRendering.h" |
| 78 | #include "nsCanvasFrame.h" |
| 79 | #include "nsContentUtils.h" |
| 80 | #include "nsFieldSetFrame.h" |
| 81 | #include "nsFlexContainerFrame.h" |
| 82 | #include "nsFocusManager.h" |
| 83 | #include "nsFrameList.h" |
| 84 | #include "nsFrameSelection.h" |
| 85 | #include "nsFrameState.h" |
| 86 | #include "nsFrameTraversal.h" |
| 87 | #include "nsGkAtoms.h" |
| 88 | #include "nsGridContainerFrame.h" |
| 89 | #include "nsIBaseWindow.h" |
| 90 | #include "nsIContent.h" |
| 91 | #include "nsIContentInlines.h" |
| 92 | #include "nsIPercentBSizeObserver.h" |
| 93 | #include "nsImageFrame.h" |
| 94 | #include "nsInlineFrame.h" |
| 95 | #include "nsLayoutUtils.h" |
| 96 | #include "nsMenuPopupFrame.h" |
| 97 | #include "nsNameSpaceManager.h" |
| 98 | #include "nsPlaceholderFrame.h" |
| 99 | #include "nsPresContext.h" |
| 100 | #include "nsPresContextInlines.h" |
| 101 | #include "nsReadableUtils.h" |
| 102 | #include "nsString.h" |
| 103 | #include "nsStyleConsts.h" |
| 104 | #include "nsStyleStructInlines.h" |
| 105 | #include "nsStyleTransformMatrix.h" |
| 106 | #include "nsTableWrapperFrame.h" |
| 107 | #include "nsTextControlFrame.h" |
| 108 | #include "nsXULElement.h" |
| 109 | |
| 110 | // For triple-click pref |
| 111 | #include "RetainedDisplayListBuilder.h" |
| 112 | #include "ScrollSnap.h" |
| 113 | #include "StickyScrollContainer.h" |
| 114 | #include "gfxContext.h" |
| 115 | #include "imgIRequest.h" |
| 116 | #include "nsBlockFrame.h" |
| 117 | #include "nsChangeHint.h" |
| 118 | #include "nsContainerFrame.h" |
| 119 | #include "nsDisplayList.h" |
| 120 | #include "nsError.h" |
| 121 | #include "nsFontInflationData.h" |
| 122 | #include "nsIFrameInlines.h" |
| 123 | #include "nsRegion.h" |
| 124 | #include "nsStyleChangeList.h" |
| 125 | #include "nsSubDocumentFrame.h" |
| 126 | #include "nsViewportInfo.h" |
| 127 | #include "nsWindowSizes.h" |
| 128 | |
| 129 | #ifdef ACCESSIBILITY1 |
| 130 | # include "mozilla/a11y/PdfStructTreeBuilder.h" |
| 131 | # include "nsAccessibilityService.h" |
| 132 | #endif |
| 133 | |
| 134 | #include "ActiveLayerTracker.h" |
| 135 | #include "mozilla/AsyncEventDispatcher.h" |
| 136 | #include "mozilla/CSSClipPathInstance.h" |
| 137 | #include "mozilla/EffectCompositor.h" |
| 138 | #include "mozilla/EffectSet.h" |
| 139 | #include "mozilla/EventListenerManager.h" |
| 140 | #include "mozilla/EventStateManager.h" |
| 141 | #include "mozilla/LookAndFeel.h" |
| 142 | #include "mozilla/MouseEvents.h" |
| 143 | #include "mozilla/Preferences.h" |
| 144 | #include "mozilla/ServoStyleSet.h" |
| 145 | #include "mozilla/ServoStyleSetInlines.h" |
| 146 | #include "mozilla/css/ImageLoader.h" |
| 147 | #include "mozilla/dom/HTMLBodyElement.h" |
| 148 | #include "mozilla/dom/SVGPathData.h" |
| 149 | #include "mozilla/dom/TouchEvent.h" |
| 150 | #include "mozilla/gfx/Tools.h" |
| 151 | #include "mozilla/layers/WebRenderUserData.h" |
| 152 | #include "mozilla/layout/ScrollAnchorContainer.h" |
| 153 | #include "nsITheme.h" |
| 154 | #include "nsPrintfCString.h" |
| 155 | |
| 156 | using namespace mozilla; |
| 157 | using namespace mozilla::css; |
| 158 | using namespace mozilla::dom; |
| 159 | using namespace mozilla::gfx; |
| 160 | using namespace mozilla::layers; |
| 161 | using namespace mozilla::layout; |
| 162 | using nsStyleTransformMatrix::TransformReferenceBox; |
| 163 | |
| 164 | nsIFrame* nsILineIterator::LineInfo::GetLastFrameOnLine() const { |
| 165 | if (!mNumFramesOnLine) { |
| 166 | return nullptr; // empty line, not illegal |
| 167 | } |
| 168 | MOZ_ASSERT(mFirstFrameOnLine)do { static_assert( mozilla::detail::AssertionConditionType< decltype(mFirstFrameOnLine)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(mFirstFrameOnLine))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("mFirstFrameOnLine" , "./../../../layout/generic/nsIFrame.cpp", 168); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "mFirstFrameOnLine" ")"); do { MOZ_CrashSequence (__null, 168); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 169 | nsIFrame* maybeLastFrame = mFirstFrameOnLine; |
| 170 | for ([[maybe_unused]] int32_t i : IntegerRange(mNumFramesOnLine - 1)) { |
| 171 | maybeLastFrame = maybeLastFrame->GetNextSibling(); |
| 172 | if (NS_WARN_IF(!maybeLastFrame)NS_warn_if_impl(!maybeLastFrame, "!maybeLastFrame", "./../../../layout/generic/nsIFrame.cpp" , 172)) { |
| 173 | return nullptr; |
| 174 | } |
| 175 | } |
| 176 | return maybeLastFrame; |
| 177 | } |
| 178 | |
| 179 | #ifdef HAVE_64BIT_BUILD1 |
| 180 | static_assert(sizeof(nsIFrame) == 120, "nsIFrame should remain small"); |
| 181 | #else |
| 182 | static_assert(sizeof(void*) == 4, "Odd build config?"); |
| 183 | // FIXME(emilio): Investigate why win32 and android-arm32 have bigger sizes (80) |
| 184 | // than Linux32 (76). |
| 185 | static_assert(sizeof(nsIFrame) <= 80, "nsIFrame should remain small"); |
| 186 | #endif |
| 187 | |
| 188 | const mozilla::LayoutFrameType nsIFrame::sLayoutFrameTypes[kFrameClassCount] = { |
| 189 | #define FRAME_ID(class_, type_, ...) mozilla::LayoutFrameType::type_, |
| 190 | #define ABSTRACT_FRAME_ID(...) |
| 191 | #include "mozilla/FrameIdList.h" |
| 192 | #undef FRAME_ID |
| 193 | #undef ABSTRACT_FRAME_ID |
| 194 | }; |
| 195 | |
| 196 | const nsIFrame::ClassFlags nsIFrame::sLayoutFrameClassFlags[kFrameClassCount] = |
| 197 | { |
| 198 | #define FRAME_ID(class_, type_, flags_, ...) flags_, |
| 199 | #define ABSTRACT_FRAME_ID(...) |
| 200 | #include "mozilla/FrameIdList.h" |
| 201 | #undef FRAME_ID |
| 202 | #undef ABSTRACT_FRAME_ID |
| 203 | }; |
| 204 | |
| 205 | std::string format_as(nsDirection aDirection) { |
| 206 | return aDirection == eDirNext ? "eDirNext" : "eDirPrevious"; |
| 207 | } |
| 208 | |
| 209 | std::ostream& operator<<(std::ostream& aStream, nsDirection aDirection) { |
| 210 | return aStream << format_as(aDirection); |
| 211 | } |
| 212 | |
| 213 | struct nsContentAndOffset { |
| 214 | nsIContent* mContent = nullptr; |
| 215 | int32_t mOffset = 0; |
| 216 | // Whether the boundary is a newline inside a text node rather than a <br> or |
| 217 | // a block frame. |
| 218 | bool mIsTerminalNewlineInText = false; |
| 219 | }; |
| 220 | |
| 221 | #include "nsILineIterator.h" |
| 222 | #include "prenv.h" |
| 223 | |
| 224 | FrameDestroyContext::~FrameDestroyContext() { |
| 225 | for (auto& content : mozilla::Reversed(mAnonymousContent)) { |
| 226 | mPresShell->NativeAnonymousContentWillBeRemoved(content); |
| 227 | content->UnbindFromTree(); |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | // Formerly the nsIFrameDebug interface |
| 232 | |
| 233 | std::ostream& operator<<(std::ostream& aStream, const nsReflowStatus& aStatus) { |
| 234 | char complete = 'Y'; |
| 235 | if (aStatus.IsIncomplete()) { |
| 236 | complete = 'N'; |
| 237 | } else if (aStatus.IsOverflowIncomplete()) { |
| 238 | complete = 'O'; |
| 239 | } |
| 240 | |
| 241 | char brk = 'N'; |
| 242 | if (aStatus.IsInlineBreakBefore()) { |
| 243 | brk = 'B'; |
| 244 | } else if (aStatus.IsInlineBreakAfter()) { |
| 245 | brk = 'A'; |
| 246 | } |
| 247 | |
| 248 | aStream << "[" |
| 249 | << "Complete=" << complete << "," |
| 250 | << "NIF=" << (aStatus.NextInFlowNeedsReflow() ? 'Y' : 'N') << "," |
| 251 | << "Break=" << brk << "," |
| 252 | << "FirstLetter=" << (aStatus.FirstLetterComplete() ? 'Y' : 'N') |
| 253 | << "]"; |
| 254 | return aStream; |
| 255 | } |
| 256 | |
| 257 | #ifdef DEBUG1 |
| 258 | |
| 259 | /** |
| 260 | * Note: the log module is created during library initialization which |
| 261 | * means that you cannot perform logging before then. |
| 262 | */ |
| 263 | mozilla::LazyLogModule nsIFrame::sFrameLogModule("frame"); |
| 264 | |
| 265 | #endif |
| 266 | |
| 267 | NS_DECLARE_FRAME_PROPERTY_DELETABLE(AbsoluteContainingBlockProperty,static const mozilla::FramePropertyDescriptor<AbsoluteContainingBlock >* AbsoluteContainingBlockProperty() { static const auto descriptor = mozilla::FramePropertyDescriptor<AbsoluteContainingBlock >::NewWithDestructor<DeleteValue>(); return &descriptor ; } |
| 268 | AbsoluteContainingBlock)static const mozilla::FramePropertyDescriptor<AbsoluteContainingBlock >* AbsoluteContainingBlockProperty() { static const auto descriptor = mozilla::FramePropertyDescriptor<AbsoluteContainingBlock >::NewWithDestructor<DeleteValue>(); return &descriptor ; } |
| 269 | |
| 270 | bool nsIFrame::HasAbsolutelyPositionedChildren() const { |
| 271 | const auto* absCB = GetAbsoluteContainingBlock(); |
| 272 | return absCB && absCB->HasAbsoluteFrames(); |
| 273 | } |
| 274 | |
| 275 | AbsoluteContainingBlock* nsIFrame::GetAbsoluteContainingBlock() const { |
| 276 | if (!IsAbsoluteContainer()) { |
| 277 | return nullptr; |
| 278 | } |
| 279 | AbsoluteContainingBlock* absCB = |
| 280 | GetProperty(AbsoluteContainingBlockProperty()); |
| 281 | NS_ASSERTION(absCB,do { if (!(absCB)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "The frame is marked as an abspos container but doesn't have " "the property", "absCB", "./../../../layout/generic/nsIFrame.cpp" , 283); MOZ_PretendNoReturn(); } } while (0) |
| 282 | "The frame is marked as an abspos container but doesn't have "do { if (!(absCB)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "The frame is marked as an abspos container but doesn't have " "the property", "absCB", "./../../../layout/generic/nsIFrame.cpp" , 283); MOZ_PretendNoReturn(); } } while (0) |
| 283 | "the property")do { if (!(absCB)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "The frame is marked as an abspos container but doesn't have " "the property", "absCB", "./../../../layout/generic/nsIFrame.cpp" , 283); MOZ_PretendNoReturn(); } } while (0); |
| 284 | return absCB; |
| 285 | } |
| 286 | |
| 287 | void nsIFrame::MarkAsAbsoluteContainingBlock() { |
| 288 | MOZ_ASSERT(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN))do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN)" , "./../../../layout/generic/nsIFrame.cpp", 288); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN)" ")"); do { MOZ_CrashSequence(__null, 288); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 289 | NS_ASSERTION(!GetProperty(AbsoluteContainingBlockProperty()),do { if (!(!GetProperty(AbsoluteContainingBlockProperty()))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Already has an abs-pos containing block property?" , "!GetProperty(AbsoluteContainingBlockProperty())", "./../../../layout/generic/nsIFrame.cpp" , 290); MOZ_PretendNoReturn(); } } while (0) |
| 290 | "Already has an abs-pos containing block property?")do { if (!(!GetProperty(AbsoluteContainingBlockProperty()))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Already has an abs-pos containing block property?" , "!GetProperty(AbsoluteContainingBlockProperty())", "./../../../layout/generic/nsIFrame.cpp" , 290); MOZ_PretendNoReturn(); } } while (0); |
| 291 | NS_ASSERTION(!HasAnyStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN),do { if (!(!HasAnyStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Already has NS_FRAME_HAS_ABSPOS_CHILDREN state bit?" , "!HasAnyStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN)", "./../../../layout/generic/nsIFrame.cpp" , 292); MOZ_PretendNoReturn(); } } while (0) |
| 292 | "Already has NS_FRAME_HAS_ABSPOS_CHILDREN state bit?")do { if (!(!HasAnyStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Already has NS_FRAME_HAS_ABSPOS_CHILDREN state bit?" , "!HasAnyStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN)", "./../../../layout/generic/nsIFrame.cpp" , 292); MOZ_PretendNoReturn(); } } while (0); |
| 293 | AddStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN); |
| 294 | SetProperty(AbsoluteContainingBlockProperty(), new AbsoluteContainingBlock()); |
| 295 | } |
| 296 | |
| 297 | void nsIFrame::MarkAsNotAbsoluteContainingBlock() { |
| 298 | NS_ASSERTION(!HasAbsolutelyPositionedChildren(), "Think of the children!")do { if (!(!HasAbsolutelyPositionedChildren())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Think of the children!", "!HasAbsolutelyPositionedChildren()" , "./../../../layout/generic/nsIFrame.cpp", 298); MOZ_PretendNoReturn (); } } while (0); |
| 299 | NS_ASSERTION(GetProperty(AbsoluteContainingBlockProperty()),do { if (!(GetProperty(AbsoluteContainingBlockProperty()))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Should have an abs-pos containing block property" , "GetProperty(AbsoluteContainingBlockProperty())", "./../../../layout/generic/nsIFrame.cpp" , 300); MOZ_PretendNoReturn(); } } while (0) |
| 300 | "Should have an abs-pos containing block property")do { if (!(GetProperty(AbsoluteContainingBlockProperty()))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Should have an abs-pos containing block property" , "GetProperty(AbsoluteContainingBlockProperty())", "./../../../layout/generic/nsIFrame.cpp" , 300); MOZ_PretendNoReturn(); } } while (0); |
| 301 | NS_ASSERTION(HasAnyStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN),do { if (!(HasAnyStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN))) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Should have NS_FRAME_HAS_ABSPOS_CHILDREN state bit" , "HasAnyStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN)", "./../../../layout/generic/nsIFrame.cpp" , 302); MOZ_PretendNoReturn(); } } while (0) |
| 302 | "Should have NS_FRAME_HAS_ABSPOS_CHILDREN state bit")do { if (!(HasAnyStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN))) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Should have NS_FRAME_HAS_ABSPOS_CHILDREN state bit" , "HasAnyStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN)", "./../../../layout/generic/nsIFrame.cpp" , 302); MOZ_PretendNoReturn(); } } while (0); |
| 303 | MOZ_ASSERT(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN))do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN)" , "./../../../layout/generic/nsIFrame.cpp", 303); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN)" ")"); do { MOZ_CrashSequence(__null, 303); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 304 | RemoveStateBits(NS_FRAME_HAS_ABSPOS_CHILDREN); |
| 305 | RemoveProperty(AbsoluteContainingBlockProperty()); |
| 306 | } |
| 307 | |
| 308 | bool nsIFrame::CheckAndClearPaintedState() { |
| 309 | bool result = HasAnyStateBits(NS_FRAME_PAINTED_THEBES); |
| 310 | RemoveStateBits(NS_FRAME_PAINTED_THEBES); |
| 311 | |
| 312 | for (const auto& childList : ChildLists()) { |
| 313 | for (nsIFrame* child : childList.mList) { |
| 314 | if (child->CheckAndClearPaintedState()) { |
| 315 | result = true; |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | return result; |
| 320 | } |
| 321 | |
| 322 | nsIFrame* nsIFrame::FindLineContainer() const { |
| 323 | MOZ_ASSERT(IsLineParticipant())do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsLineParticipant())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(IsLineParticipant()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsLineParticipant()" , "./../../../layout/generic/nsIFrame.cpp", 323); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "IsLineParticipant()" ")"); do { MOZ_CrashSequence (__null, 323); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 324 | nsIFrame* parent = GetParent(); |
| 325 | while (parent && |
| 326 | (parent->IsLineParticipant() || parent->CanContinueTextRun())) { |
| 327 | parent = parent->GetParent(); |
| 328 | } |
| 329 | return parent; |
| 330 | } |
| 331 | |
| 332 | bool nsIFrame::CheckAndClearDisplayListState() { |
| 333 | bool result = BuiltDisplayList(); |
| 334 | SetBuiltDisplayList(false); |
| 335 | |
| 336 | for (const auto& childList : ChildLists()) { |
| 337 | for (nsIFrame* child : childList.mList) { |
| 338 | if (child->CheckAndClearDisplayListState()) { |
| 339 | result = true; |
| 340 | } |
| 341 | } |
| 342 | } |
| 343 | return result; |
| 344 | } |
| 345 | |
| 346 | bool nsIFrame::IsVisibleConsideringAncestors(uint32_t aFlags) const { |
| 347 | if (!StyleVisibility()->IsVisible() || |
| 348 | HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 349 | return false; |
| 350 | } |
| 351 | |
| 352 | if (PresShell()->IsUnderHiddenEmbedderElement()) { |
| 353 | return false; |
| 354 | } |
| 355 | |
| 356 | const nsIFrame* frame = this; |
| 357 | while (frame) { |
| 358 | // Checking mMozSubtreeHiddenOnlyVisually is relatively slow because it |
| 359 | // involves loading more memory. It's only allowed in chrome sheets so let's |
| 360 | // only support it in the parent process so we can mostly optimize this out |
| 361 | // in content processes. |
| 362 | if (XRE_IsParentProcess()) { |
| 363 | if (const nsMenuPopupFrame* popup = do_QueryFrame(frame); |
| 364 | popup && !popup->IsOpen()) { |
| 365 | return false; |
| 366 | } |
| 367 | if (frame->StyleUIReset()->mMozSubtreeHiddenOnlyVisually) { |
| 368 | return false; |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | // This method is used to determine if a frame is focusable, because it's |
| 373 | // called by nsIFrame::IsFocusable. `content-visibility: auto` should not |
| 374 | // force this frame to be unfocusable, so we only take into account |
| 375 | // `content-visibility: hidden` here. |
| 376 | if (this != frame && |
| 377 | frame->HidesContent(IncludeContentVisibility::Hidden)) { |
| 378 | return false; |
| 379 | } |
| 380 | |
| 381 | if (nsIFrame* parent = frame->GetParent()) { |
| 382 | frame = parent; |
| 383 | } else { |
| 384 | parent = nsLayoutUtils::GetCrossDocParentFrameInProcess(frame); |
| 385 | if (!parent) { |
| 386 | break; |
| 387 | } |
| 388 | |
| 389 | if ((aFlags & nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY) == 0 && |
| 390 | parent->PresContext()->IsChrome() && |
| 391 | !frame->PresContext()->IsChrome()) { |
| 392 | break; |
| 393 | } |
| 394 | |
| 395 | frame = parent; |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | return true; |
| 400 | } |
| 401 | |
| 402 | void nsIFrame::FindCloserFrameForSelection( |
| 403 | const nsPoint& aPoint, FrameWithDistance* aCurrentBestFrame) { |
| 404 | if (nsLayoutUtils::PointIsCloserToRect(aPoint, mRect, |
| 405 | aCurrentBestFrame->mXDistance, |
| 406 | aCurrentBestFrame->mYDistance)) { |
| 407 | aCurrentBestFrame->mFrame = this; |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | void nsIFrame::ElementStateChanged(mozilla::dom::ElementState aStates) {} |
| 412 | |
| 413 | void WeakFrame::Clear(mozilla::PresShell* aPresShell) { |
| 414 | if (aPresShell) { |
| 415 | aPresShell->RemoveWeakFrame(this); |
| 416 | } |
| 417 | mFrame = nullptr; |
| 418 | } |
| 419 | |
| 420 | AutoWeakFrame::AutoWeakFrame(const WeakFrame& aOther) |
| 421 | : mPrev(nullptr), mFrame(nullptr) { |
| 422 | Init(aOther.GetFrame()); |
| 423 | } |
| 424 | |
| 425 | void AutoWeakFrame::Clear(mozilla::PresShell* aPresShell) { |
| 426 | if (aPresShell) { |
| 427 | aPresShell->RemoveAutoWeakFrame(this); |
| 428 | } |
| 429 | mFrame = nullptr; |
| 430 | mPrev = nullptr; |
| 431 | } |
| 432 | |
| 433 | AutoWeakFrame::~AutoWeakFrame() { |
| 434 | Clear(mFrame ? mFrame->PresShell() : nullptr); |
| 435 | } |
| 436 | |
| 437 | void AutoWeakFrame::Init(nsIFrame* aFrame) { |
| 438 | Clear(mFrame ? mFrame->PresShell() : nullptr); |
| 439 | mFrame = aFrame; |
| 440 | if (mFrame) { |
| 441 | mozilla::PresShell* presShell = mFrame->PresShell(); |
| 442 | NS_WARNING_ASSERTION(presShell, "Null PresShell in AutoWeakFrame!")do { if (!(presShell)) { NS_DebugBreak(NS_DEBUG_WARNING, "Null PresShell in AutoWeakFrame!" , "presShell", "./../../../layout/generic/nsIFrame.cpp", 442) ; } } while (false); |
| 443 | if (presShell) { |
| 444 | presShell->AddAutoWeakFrame(this); |
| 445 | } else { |
| 446 | mFrame = nullptr; |
| 447 | } |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | void WeakFrame::Init(nsIFrame* aFrame) { |
| 452 | Clear(mFrame ? mFrame->PresShell() : nullptr); |
| 453 | mFrame = aFrame; |
| 454 | if (mFrame) { |
| 455 | mozilla::PresShell* presShell = mFrame->PresShell(); |
| 456 | MOZ_ASSERT(presShell, "Null PresShell in WeakFrame!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(presShell)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(presShell))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("presShell" " (" "Null PresShell in WeakFrame!" ")", "./../../../layout/generic/nsIFrame.cpp", 456); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "presShell" ") (" "Null PresShell in WeakFrame!" ")"); do { MOZ_CrashSequence(__null, 456); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 457 | if (presShell) { |
| 458 | presShell->AddWeakFrame(this); |
| 459 | } else { |
| 460 | mFrame = nullptr; |
| 461 | } |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | WeakFrame& WeakFrame::operator=(WeakFrame&& aOther) { |
| 466 | if (this != &aOther) { |
| 467 | Init(aOther.mFrame); |
| 468 | aOther.Clear(aOther.mFrame ? aOther.mFrame->PresShell() : nullptr); |
| 469 | } |
| 470 | return *this; |
| 471 | } |
| 472 | |
| 473 | nsIFrame* NS_NewEmptyFrame(PresShell* aPresShell, ComputedStyle* aStyle) { |
| 474 | return new nsIFrame(aStyle, aPresShell->GetPresContext()); |
| 475 | } |
| 476 | |
| 477 | nsIFrame::~nsIFrame() { |
| 478 | MOZ_COUNT_DTOR(nsIFrame)do { static_assert(std::is_class_v<nsIFrame>, "Token '" "nsIFrame" "' is not a class type."); static_assert(!std::is_base_of_v <nsISupports, nsIFrame>, "nsISupports classes don't need to call MOZ_COUNT_CTOR or " "MOZ_COUNT_DTOR");; NS_LogDtor((void*)this, "nsIFrame", sizeof (*this)); } while (0); |
| 479 | |
| 480 | MOZ_ASSERT(GetVisibility() != Visibility::ApproximatelyVisible,do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetVisibility() != Visibility::ApproximatelyVisible) >::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetVisibility() != Visibility::ApproximatelyVisible) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("GetVisibility() != Visibility::ApproximatelyVisible" " (" "Visible nsIFrame is being destroyed" ")", "./../../../layout/generic/nsIFrame.cpp" , 481); AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetVisibility() != Visibility::ApproximatelyVisible" ") (" "Visible nsIFrame is being destroyed" ")"); do { MOZ_CrashSequence (__null, 481); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false) |
| 481 | "Visible nsIFrame is being destroyed")do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetVisibility() != Visibility::ApproximatelyVisible) >::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetVisibility() != Visibility::ApproximatelyVisible) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("GetVisibility() != Visibility::ApproximatelyVisible" " (" "Visible nsIFrame is being destroyed" ")", "./../../../layout/generic/nsIFrame.cpp" , 481); AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetVisibility() != Visibility::ApproximatelyVisible" ") (" "Visible nsIFrame is being destroyed" ")"); do { MOZ_CrashSequence (__null, 481); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 482 | } |
| 483 | |
| 484 | NS_IMPL_FRAMEARENA_HELPERS(nsIFrame)void* nsIFrame ::operator new(size_t sz) { return mozilla::FrameArena ::Allocate(nsQueryFrame::nsIFrame_id, sz); } |
| 485 | |
| 486 | // Dummy operator delete. Will never be called, but must be defined |
| 487 | // to satisfy some C++ ABIs. |
| 488 | void nsIFrame::operator delete(void*, size_t) { |
| 489 | MOZ_CRASH("nsIFrame::operator delete should never be called")do { do { } while (false); MOZ_ReportCrash("" "nsIFrame::operator delete should never be called" , "./../../../layout/generic/nsIFrame.cpp", 489); AnnotateMozCrashReason ("MOZ_CRASH(" "nsIFrame::operator delete should never be called" ")"); do { MOZ_CrashSequence(__null, 489); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 490 | } |
| 491 | |
| 492 | NS_QUERYFRAME_HEAD(nsIFrame)void* nsIFrame ::QueryFrame(FrameIID id) const { switch (id) { |
| 493 | NS_QUERYFRAME_ENTRY(nsIFrame)case nsIFrame ::kFrameIID: { static_assert( std::is_same_v< nsIFrame, nsIFrame ::Has_NS_DECL_QUERYFRAME_TARGET>, "nsIFrame" " must declare itself as a queryframe target"); return const_cast <nsIFrame*>(static_cast<const nsIFrame*>(this)); } |
| 494 | NS_QUERYFRAME_TAIL_INHERITANCE_ROOTdefault: break; } do { static_assert( mozilla::detail::AssertionConditionType <decltype(id != GetFrameId())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(id != GetFrameId()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("id != GetFrameId()" " (" "A frame failed to QueryFrame to its *own type*. " "It may be missing NS_DECL_QUERYFRAME, or a " "NS_QUERYFRAME_ENTRY() line with its own type name" ")", "./../../../layout/generic/nsIFrame.cpp" , 494); AnnotateMozCrashReason("MOZ_ASSERT" "(" "id != GetFrameId()" ") (" "A frame failed to QueryFrame to its *own type*. " "It may be missing NS_DECL_QUERYFRAME, or a " "NS_QUERYFRAME_ENTRY() line with its own type name" ")"); do { MOZ_CrashSequence(__null, 494); __attribute__((nomerge)) :: abort(); } while (false); } } while (false); return nullptr; } |
| 495 | |
| 496 | ///////////////////////////////////////////////////////////////////////////// |
| 497 | // nsIFrame |
| 498 | |
| 499 | static bool IsFontSizeInflationContainer(nsIFrame* aFrame, |
| 500 | const nsStyleDisplay* aStyleDisplay) { |
| 501 | /* |
| 502 | * Font size inflation is built around the idea that we're inflating |
| 503 | * the fonts for a pan-and-zoom UI so that when the user scales up a |
| 504 | * block or other container to fill the width of the device, the fonts |
| 505 | * will be readable. To do this, we need to pick what counts as a |
| 506 | * container. |
| 507 | * |
| 508 | * From a code perspective, the only hard requirement is that frames |
| 509 | * that are line participants (nsIFrame::IsLineParticipant) are never |
| 510 | * containers, since line layout assumes that the inflation is consistent |
| 511 | * within a line. |
| 512 | * |
| 513 | * This is not an imposition, since we obviously want a bunch of text |
| 514 | * (possibly with inline elements) flowing within a block to count the |
| 515 | * block (or higher) as its container. |
| 516 | * |
| 517 | * We also want form controls, including the text in the anonymous |
| 518 | * content inside of them, to match each other and the text next to |
| 519 | * them, so they and their anonymous content should also not be a |
| 520 | * container. |
| 521 | * |
| 522 | * However, because we can't reliably compute sizes across XUL during |
| 523 | * reflow, any XUL frame with a XUL parent is always a container. |
| 524 | * |
| 525 | * There are contexts where it would be nice if some blocks didn't |
| 526 | * count as a container, so that, for example, an indented quotation |
| 527 | * didn't end up with a smaller font size. However, it's hard to |
| 528 | * distinguish these situations where we really do want the indented |
| 529 | * thing to count as a container, so we don't try, and blocks are |
| 530 | * always containers. |
| 531 | */ |
| 532 | |
| 533 | // The root frame should always be an inflation container. |
| 534 | if (!aFrame->GetParent()) { |
| 535 | return true; |
| 536 | } |
| 537 | |
| 538 | nsIContent* content = aFrame->GetContent(); |
| 539 | if (content && content->IsInNativeAnonymousSubtree()) { |
| 540 | // Native anonymous content shouldn't be a font inflation root, |
| 541 | // except for the custom content container. |
| 542 | return content == |
| 543 | aFrame->PresContext()->Document()->GetCustomContentContainer(); |
| 544 | } |
| 545 | |
| 546 | LayoutFrameType frameType = aFrame->Type(); |
| 547 | bool isInline = |
| 548 | aFrame->GetDisplay().IsInlineFlow() || RubyUtils::IsRubyBox(frameType) || |
| 549 | (aStyleDisplay->IsFloatingStyle() && |
| 550 | frameType == LayoutFrameType::Letter) || |
| 551 | // Given multiple frames for the same node, only the |
| 552 | // outer one should be considered a container. |
| 553 | // (Important, e.g., for scrolled frames.) |
| 554 | (aFrame->GetParent()->GetContent() == content) || |
| 555 | (content && |
| 556 | // Form controls shouldn't become inflation containers. |
| 557 | (content->IsAnyOfHTMLElements(nsGkAtoms::option, nsGkAtoms::optgroup, |
| 558 | nsGkAtoms::select, nsGkAtoms::input, |
| 559 | nsGkAtoms::button, nsGkAtoms::textarea))); |
| 560 | NS_ASSERTION(!aFrame->IsLineParticipant() || isInline ||do { if (!(!aFrame->IsLineParticipant() || isInline || aFrame ->IsBrFrame() || aFrame->IsMathMLFrame())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "line participants must not be containers" , "!aFrame->IsLineParticipant() || isInline || aFrame->IsBrFrame() || aFrame->IsMathMLFrame()" , "./../../../layout/generic/nsIFrame.cpp", 565); MOZ_PretendNoReturn (); } } while (0) |
| 561 | // br frames and mathml frames report being linedo { if (!(!aFrame->IsLineParticipant() || isInline || aFrame ->IsBrFrame() || aFrame->IsMathMLFrame())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "line participants must not be containers" , "!aFrame->IsLineParticipant() || isInline || aFrame->IsBrFrame() || aFrame->IsMathMLFrame()" , "./../../../layout/generic/nsIFrame.cpp", 565); MOZ_PretendNoReturn (); } } while (0) |
| 562 | // participants even when their position or display isdo { if (!(!aFrame->IsLineParticipant() || isInline || aFrame ->IsBrFrame() || aFrame->IsMathMLFrame())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "line participants must not be containers" , "!aFrame->IsLineParticipant() || isInline || aFrame->IsBrFrame() || aFrame->IsMathMLFrame()" , "./../../../layout/generic/nsIFrame.cpp", 565); MOZ_PretendNoReturn (); } } while (0) |
| 563 | // setdo { if (!(!aFrame->IsLineParticipant() || isInline || aFrame ->IsBrFrame() || aFrame->IsMathMLFrame())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "line participants must not be containers" , "!aFrame->IsLineParticipant() || isInline || aFrame->IsBrFrame() || aFrame->IsMathMLFrame()" , "./../../../layout/generic/nsIFrame.cpp", 565); MOZ_PretendNoReturn (); } } while (0) |
| 564 | aFrame->IsBrFrame() || aFrame->IsMathMLFrame(),do { if (!(!aFrame->IsLineParticipant() || isInline || aFrame ->IsBrFrame() || aFrame->IsMathMLFrame())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "line participants must not be containers" , "!aFrame->IsLineParticipant() || isInline || aFrame->IsBrFrame() || aFrame->IsMathMLFrame()" , "./../../../layout/generic/nsIFrame.cpp", 565); MOZ_PretendNoReturn (); } } while (0) |
| 565 | "line participants must not be containers")do { if (!(!aFrame->IsLineParticipant() || isInline || aFrame ->IsBrFrame() || aFrame->IsMathMLFrame())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "line participants must not be containers" , "!aFrame->IsLineParticipant() || isInline || aFrame->IsBrFrame() || aFrame->IsMathMLFrame()" , "./../../../layout/generic/nsIFrame.cpp", 565); MOZ_PretendNoReturn (); } } while (0); |
| 566 | return !isInline; |
| 567 | } |
| 568 | |
| 569 | static void MaybeScheduleReflowSVGNonDisplayText(nsIFrame* aFrame) { |
| 570 | if (!aFrame->IsInSVGTextSubtree()) { |
| 571 | return; |
| 572 | } |
| 573 | |
| 574 | // We need to ensure that any non-display SVGTextFrames get reflowed when a |
| 575 | // child text frame gets new style. Thus we need to schedule a reflow in |
| 576 | // |DidSetComputedStyle|. We also need to call it from |DestroyFrom|, |
| 577 | // because otherwise we won't get notified when style changes to |
| 578 | // "display:none". |
| 579 | SVGTextFrame* svgTextFrame = static_cast<SVGTextFrame*>( |
| 580 | nsLayoutUtils::GetClosestFrameOfType(aFrame, LayoutFrameType::SVGText)); |
| 581 | nsIFrame* anonBlock = svgTextFrame->PrincipalChildList().FirstChild(); |
| 582 | |
| 583 | // Note that we must check NS_FRAME_FIRST_REFLOW on our SVGTextFrame's |
| 584 | // anonymous block frame rather than our aFrame, since NS_FRAME_FIRST_REFLOW |
| 585 | // may be set on us if we're a new frame that has been inserted after the |
| 586 | // document's first reflow. (In which case this DidSetComputedStyle call may |
| 587 | // be happening under frame construction under a Reflow() call.) |
| 588 | if (!anonBlock || anonBlock->HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) { |
| 589 | return; |
| 590 | } |
| 591 | |
| 592 | if (!svgTextFrame->HasAnyStateBits(NS_FRAME_IS_NONDISPLAY) || |
| 593 | svgTextFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)) { |
| 594 | return; |
| 595 | } |
| 596 | if (SVGUtils::AnyOuterSVGIsCallingReflowSVG(svgTextFrame)) { |
| 597 | return; |
| 598 | } |
| 599 | |
| 600 | svgTextFrame->ScheduleReflowSVGNonDisplayText( |
| 601 | IntrinsicDirty::FrameAncestorsAndDescendants); |
| 602 | } |
| 603 | |
| 604 | bool nsIFrame::IsReplaced() const { |
| 605 | if (HasAnyClassFlag(ClassFlags::Replaced)) { |
| 606 | return true; |
| 607 | } |
| 608 | if (!Style()->IsAnonBox() && mContent->IsHTMLElement(nsGkAtoms::button)) { |
| 609 | // Button always behaves as a replaced element. |
| 610 | return true; |
| 611 | } |
| 612 | return false; |
| 613 | } |
| 614 | |
| 615 | bool nsIFrame::IsAtomicInline() const { |
| 616 | // See: https://drafts.csswg.org/css-display-4/#atomic-inline |
| 617 | return IsInlineOutside() && |
| 618 | (IsReplaced() || !StyleDisplay()->IsInlineInsideStyle()); |
| 619 | } |
| 620 | |
| 621 | bool nsIFrame::ShouldPropagateRepaintsToRoot() const { |
| 622 | if (!IsPrimaryFrame()) { |
| 623 | // special case for table frames because style images are associated to the |
| 624 | // table frame, but the table wrapper frame is the primary frame |
| 625 | if (IsTableFrame()) { |
| 626 | MOZ_ASSERT(GetParent() && GetParent()->IsTableWrapperFrame())do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetParent() && GetParent()->IsTableWrapperFrame ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetParent() && GetParent()->IsTableWrapperFrame ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetParent() && GetParent()->IsTableWrapperFrame()" , "./../../../layout/generic/nsIFrame.cpp", 626); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "GetParent() && GetParent()->IsTableWrapperFrame()" ")"); do { MOZ_CrashSequence(__null, 626); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 627 | return GetParent()->ShouldPropagateRepaintsToRoot(); |
| 628 | } |
| 629 | |
| 630 | return false; |
| 631 | } |
| 632 | nsIContent* content = GetContent(); |
| 633 | Document* document = content->OwnerDoc(); |
| 634 | return content == document->GetRootElement() || |
| 635 | content == document->GetBodyElement(); |
| 636 | } |
| 637 | |
| 638 | bool nsIFrame::IsRenderedLegend() const { |
| 639 | if (auto* parent = GetParent(); parent && parent->IsFieldSetFrame()) { |
| 640 | return static_cast<nsFieldSetFrame*>(parent)->GetLegend() == this; |
| 641 | } |
| 642 | return false; |
| 643 | } |
| 644 | |
| 645 | void nsIFrame::Init(nsIContent* aContent, nsContainerFrame* aParent, |
| 646 | nsIFrame* aPrevInFlow) { |
| 647 | MOZ_ASSERT(nsQueryFrame::FrameIID(mClass) == GetFrameId())do { static_assert( mozilla::detail::AssertionConditionType< decltype(nsQueryFrame::FrameIID(mClass) == GetFrameId())>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(nsQueryFrame::FrameIID(mClass) == GetFrameId()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("nsQueryFrame::FrameIID(mClass) == GetFrameId()" , "./../../../layout/generic/nsIFrame.cpp", 647); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "nsQueryFrame::FrameIID(mClass) == GetFrameId()" ")"); do { MOZ_CrashSequence(__null, 647); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 648 | MOZ_ASSERT(!mContent, "Double-initing a frame?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mContent)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!mContent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!mContent" " (" "Double-initing a frame?" ")", "./../../../layout/generic/nsIFrame.cpp", 648); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!mContent" ") (" "Double-initing a frame?" ")"); do { MOZ_CrashSequence(__null, 648); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 649 | |
| 650 | mContent = aContent; |
| 651 | mParent = aParent; |
| 652 | MOZ_RELEASE_ASSERT(!mParent || PresContext() == mParent->PresContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mParent || PresContext() == mParent->PresContext ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!mParent || PresContext() == mParent->PresContext ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!mParent || PresContext() == mParent->PresContext()", "./../../../layout/generic/nsIFrame.cpp" , 652); AnnotateMozCrashReason("MOZ_RELEASE_ASSERT" "(" "!mParent || PresContext() == mParent->PresContext()" ")"); do { MOZ_CrashSequence(__null, 652); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 653 | |
| 654 | if (aPrevInFlow) { |
| 655 | mWritingMode = aPrevInFlow->GetWritingMode(); |
| 656 | |
| 657 | // Copy some state bits from prev-in-flow (the bits that should apply |
| 658 | // throughout a continuation chain). The bits are sorted according to their |
| 659 | // order in nsFrameStateBits.h. |
| 660 | |
| 661 | // clang-format off |
| 662 | AddStateBits(aPrevInFlow->GetStateBits() & |
| 663 | (NS_FRAME_GENERATED_CONTENT | |
| 664 | NS_FRAME_OUT_OF_FLOW | |
| 665 | NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN | |
| 666 | NS_FRAME_PART_OF_IBSPLIT | |
| 667 | NS_FRAME_MAY_BE_TRANSFORMED | |
| 668 | NS_FRAME_HAS_MULTI_COLUMN_ANCESTOR)); |
| 669 | // clang-format on |
| 670 | |
| 671 | // Copy other bits in nsIFrame from prev-in-flow. |
| 672 | mHasColumnSpanSiblings = aPrevInFlow->HasColumnSpanSiblings(); |
| 673 | |
| 674 | // If our prev-in-flow is an absolute containing block, we must be one, too. |
| 675 | if (aPrevInFlow->IsAbsoluteContainer()) { |
| 676 | MOZ_ASSERT(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN),do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN)" " (" "We should've carried this bit from our prev-in-flow!" ")" , "./../../../layout/generic/nsIFrame.cpp", 677); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN)" ") (" "We should've carried this bit from our prev-in-flow!" ")"); do { MOZ_CrashSequence(__null, 677); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 677 | "We should've carried this bit from our prev-in-flow!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN)" " (" "We should've carried this bit from our prev-in-flow!" ")" , "./../../../layout/generic/nsIFrame.cpp", 677); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN)" ") (" "We should've carried this bit from our prev-in-flow!" ")"); do { MOZ_CrashSequence(__null, 677); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 678 | MarkAsAbsoluteContainingBlock(); |
| 679 | } |
| 680 | } else { |
| 681 | PresContext()->ConstructedFrame(); |
| 682 | } |
| 683 | |
| 684 | if (GetParent()) { |
| 685 | if (MOZ_UNLIKELY(mContent == PresContext()->Document()->GetRootElement() &&(__builtin_expect(!!(mContent == PresContext()->Document() ->GetRootElement() && mContent == GetParent()-> GetContent()), 0)) |
| 686 | mContent == GetParent()->GetContent())(__builtin_expect(!!(mContent == PresContext()->Document() ->GetRootElement() && mContent == GetParent()-> GetContent()), 0))) { |
| 687 | // Our content is the root element and we have the same content as our |
| 688 | // parent. That is, we are the internal anonymous frame of the root |
| 689 | // element. Copy the used mWritingMode from our parent because |
| 690 | // mDocElementContainingBlock gets its mWritingMode from <body>. |
| 691 | mWritingMode = GetParent()->GetWritingMode(); |
| 692 | } |
| 693 | |
| 694 | // Copy some state bits from our parent (the bits that should apply |
| 695 | // recursively throughout a subtree). The bits are sorted according to their |
| 696 | // order in nsFrameStateBits.h. |
| 697 | |
| 698 | // clang-format off |
| 699 | AddStateBits(GetParent()->GetStateBits() & |
| 700 | (NS_FRAME_GENERATED_CONTENT | |
| 701 | NS_FRAME_IS_SVG_TEXT | |
| 702 | NS_FRAME_IN_POPUP | |
| 703 | NS_FRAME_IS_NONDISPLAY)); |
| 704 | // clang-format on |
| 705 | |
| 706 | if (HasAnyStateBits(NS_FRAME_IN_POPUP) && TrackingVisibility()) { |
| 707 | // Assume all frames in popups are visible. |
| 708 | IncApproximateVisibleCount(); |
| 709 | } |
| 710 | } |
| 711 | if (aPrevInFlow) { |
| 712 | mMayHaveOpacityAnimation = aPrevInFlow->MayHaveOpacityAnimation(); |
| 713 | mMayHaveTransformAnimation = aPrevInFlow->MayHaveTransformAnimation(); |
| 714 | } else if (mContent) { |
| 715 | // It's fine to fetch the EffectSet for the style frame here because in the |
| 716 | // following code we take care of the case where animations may target |
| 717 | // a different frame. |
| 718 | EffectSet* effectSet = EffectSet::GetForStyleFrame(this); |
| 719 | if (effectSet) { |
| 720 | mMayHaveOpacityAnimation = effectSet->MayHaveOpacityAnimation(); |
| 721 | |
| 722 | if (effectSet->MayHaveTransformAnimation()) { |
| 723 | // If we are the inner table frame for display:table content, then |
| 724 | // transform animations should go on our parent frame (the table wrapper |
| 725 | // frame). |
| 726 | // |
| 727 | // We do this when initializing the child frame (table inner frame), |
| 728 | // because when initializng the table wrapper frame, we don't yet have |
| 729 | // access to its children so we can't tell if we have transform |
| 730 | // animations or not. |
| 731 | if (SupportsCSSTransforms()) { |
| 732 | mMayHaveTransformAnimation = true; |
| 733 | AddStateBits(NS_FRAME_MAY_BE_TRANSFORMED); |
| 734 | } else if (aParent && nsLayoutUtils::GetStyleFrame(aParent) == this) { |
| 735 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(aParent->SupportsCSSTransforms())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aParent->SupportsCSSTransforms ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aParent->SupportsCSSTransforms()" " (" "Style frames that don't support transforms should have parents" " that do" ")", "./../../../layout/generic/nsIFrame.cpp", 738 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent->SupportsCSSTransforms()" ") (" "Style frames that don't support transforms should have parents" " that do" ")"); do { MOZ_CrashSequence(__null, 738); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 736 | aParent->SupportsCSSTransforms(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(aParent->SupportsCSSTransforms())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aParent->SupportsCSSTransforms ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aParent->SupportsCSSTransforms()" " (" "Style frames that don't support transforms should have parents" " that do" ")", "./../../../layout/generic/nsIFrame.cpp", 738 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent->SupportsCSSTransforms()" ") (" "Style frames that don't support transforms should have parents" " that do" ")"); do { MOZ_CrashSequence(__null, 738); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 737 | "Style frames that don't support transforms should have parents"do { static_assert( mozilla::detail::AssertionConditionType< decltype(aParent->SupportsCSSTransforms())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aParent->SupportsCSSTransforms ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aParent->SupportsCSSTransforms()" " (" "Style frames that don't support transforms should have parents" " that do" ")", "./../../../layout/generic/nsIFrame.cpp", 738 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent->SupportsCSSTransforms()" ") (" "Style frames that don't support transforms should have parents" " that do" ")"); do { MOZ_CrashSequence(__null, 738); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 738 | " that do")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aParent->SupportsCSSTransforms())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aParent->SupportsCSSTransforms ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aParent->SupportsCSSTransforms()" " (" "Style frames that don't support transforms should have parents" " that do" ")", "./../../../layout/generic/nsIFrame.cpp", 738 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent->SupportsCSSTransforms()" ") (" "Style frames that don't support transforms should have parents" " that do" ")"); do { MOZ_CrashSequence(__null, 738); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false); |
| 739 | aParent->mMayHaveTransformAnimation = true; |
| 740 | aParent->AddStateBits(NS_FRAME_MAY_BE_TRANSFORMED); |
| 741 | } |
| 742 | } |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | const nsStyleDisplay* disp = StyleDisplay(); |
| 747 | if (disp->HasTransform(this)) { |
| 748 | // If 'transform' dynamically changes, RestyleManager takes care of |
| 749 | // updating this bit. |
| 750 | AddStateBits(NS_FRAME_MAY_BE_TRANSFORMED); |
| 751 | } |
| 752 | |
| 753 | if (nsLayoutUtils::FontSizeInflationEnabled(PresContext()) || |
| 754 | !GetParent() |
| 755 | #ifdef DEBUG1 |
| 756 | // We have assertions that check inflation invariants even when |
| 757 | // font size inflation is not enabled. |
| 758 | || true |
| 759 | #endif |
| 760 | ) { |
| 761 | if (IsFontSizeInflationContainer(this, disp)) { |
| 762 | AddStateBits(NS_FRAME_FONT_INFLATION_CONTAINER); |
| 763 | if (!GetParent() || |
| 764 | // I'd use NS_FRAME_OUT_OF_FLOW, but it's not set yet. |
| 765 | disp->IsFloating(this) || disp->IsAbsolutelyPositioned(this) || |
| 766 | GetParent()->IsFlexContainerFrame() || |
| 767 | GetParent()->IsGridContainerFrame()) { |
| 768 | AddStateBits(NS_FRAME_FONT_INFLATION_FLOW_ROOT); |
| 769 | } |
| 770 | } |
| 771 | NS_ASSERTION(do { if (!(GetParent() || HasAnyStateBits(NS_FRAME_FONT_INFLATION_CONTAINER ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "root frame should always be a container" , "GetParent() || HasAnyStateBits(NS_FRAME_FONT_INFLATION_CONTAINER)" , "./../../../layout/generic/nsIFrame.cpp", 773); MOZ_PretendNoReturn (); } } while (0) |
| 772 | GetParent() || HasAnyStateBits(NS_FRAME_FONT_INFLATION_CONTAINER),do { if (!(GetParent() || HasAnyStateBits(NS_FRAME_FONT_INFLATION_CONTAINER ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "root frame should always be a container" , "GetParent() || HasAnyStateBits(NS_FRAME_FONT_INFLATION_CONTAINER)" , "./../../../layout/generic/nsIFrame.cpp", 773); MOZ_PretendNoReturn (); } } while (0) |
| 773 | "root frame should always be a container")do { if (!(GetParent() || HasAnyStateBits(NS_FRAME_FONT_INFLATION_CONTAINER ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "root frame should always be a container" , "GetParent() || HasAnyStateBits(NS_FRAME_FONT_INFLATION_CONTAINER)" , "./../../../layout/generic/nsIFrame.cpp", 773); MOZ_PretendNoReturn (); } } while (0); |
| 774 | } |
| 775 | |
| 776 | if (TrackingVisibility() && PresShell()->AssumeAllFramesVisible()) { |
| 777 | IncApproximateVisibleCount(); |
| 778 | } |
| 779 | |
| 780 | DidSetComputedStyle(nullptr); |
| 781 | |
| 782 | // For a newly created frame, we need to update this frame's visibility state. |
| 783 | // Usually we update the state when the frame is restyled and has a |
| 784 | // VisibilityChange change hint but we don't generate any change hints for |
| 785 | // newly created frames. |
| 786 | // Note: We don't need to do this for placeholders since placeholders have |
| 787 | // different styles so that the styles don't have visibility:hidden even if |
| 788 | // the parent has visibility:hidden style. We also don't need to update the |
| 789 | // state when creating continuations because its visibility is the same as its |
| 790 | // prev-in-flow, and the animation code cares only primary frames. |
| 791 | if (!IsPlaceholderFrame() && !aPrevInFlow) { |
| 792 | UpdateVisibleDescendantsState(); |
| 793 | } |
| 794 | |
| 795 | if (!aPrevInFlow && HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 796 | // We aren't going to get a reflow, so nothing else will call |
| 797 | // InvalidateRenderingObservers, we have to do it here. |
| 798 | SVGObserverUtils::InvalidateRenderingObservers(this); |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | void nsIFrame::InitPrimaryFrame() { |
| 803 | MOZ_ASSERT(IsPrimaryFrame())do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsPrimaryFrame())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(IsPrimaryFrame()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsPrimaryFrame()" , "./../../../layout/generic/nsIFrame.cpp", 803); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "IsPrimaryFrame()" ")"); do { MOZ_CrashSequence (__null, 803); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 804 | HandlePrimaryFrameStyleChange(nullptr); |
| 805 | } |
| 806 | |
| 807 | // If `aFrame` is a generated content container (::before/::after/::marker/...) |
| 808 | // whose content changed only in the text of its string items, rewrite the |
| 809 | // existing generated text nodes in place instead of reconstructing the frame. |
| 810 | // See nsStyleContent::CanUpdateGeneratedContentText and its usage. |
| 811 | static void UpdateGeneratedContentTextIfNeeded( |
| 812 | nsIFrame* aFrame, const ComputedStyle* aOldComputedStyle) { |
| 813 | if (!aFrame->IsGeneratedContentFrame()) { |
| 814 | return; |
| 815 | } |
| 816 | // Update once per element, not per continuation. |
| 817 | if (aFrame->GetPrevContinuation()) { |
| 818 | return; |
| 819 | } |
| 820 | nsIContent* content = aFrame->GetContent(); |
| 821 | if (!content || !content->IsRootOfNativeAnonymousSubtree()) { |
| 822 | return; |
| 823 | } |
| 824 | |
| 825 | const auto* oldStyle = aOldComputedStyle->StyleContent(); |
| 826 | const auto* newStyle = aFrame->StyleContent(); |
| 827 | if (oldStyle->mContent == newStyle->mContent || |
| 828 | !nsStyleContent::CanUpdateGeneratedContentText(*oldStyle, *newStyle)) { |
| 829 | return; |
| 830 | } |
| 831 | |
| 832 | auto oldItems = oldStyle->NonAltContentItems(); |
| 833 | auto newItems = newStyle->NonAltContentItems(); |
| 834 | MOZ_ASSERT(oldItems.Length() == newItems.Length(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(oldItems.Length() == newItems.Length())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(oldItems.Length() == newItems.Length()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("oldItems.Length() == newItems.Length()" " (" "CanUpdateGeneratedContentText should guarantee equal lengths" ")", "./../../../layout/generic/nsIFrame.cpp", 835); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "oldItems.Length() == newItems.Length()" ") (" "CanUpdateGeneratedContentText should guarantee equal lengths" ")"); do { MOZ_CrashSequence(__null, 835); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 835 | "CanUpdateGeneratedContentText should guarantee equal lengths")do { static_assert( mozilla::detail::AssertionConditionType< decltype(oldItems.Length() == newItems.Length())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(oldItems.Length() == newItems.Length()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("oldItems.Length() == newItems.Length()" " (" "CanUpdateGeneratedContentText should guarantee equal lengths" ")", "./../../../layout/generic/nsIFrame.cpp", 835); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "oldItems.Length() == newItems.Length()" ") (" "CanUpdateGeneratedContentText should guarantee equal lengths" ")"); do { MOZ_CrashSequence(__null, 835); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 836 | nsIContent* child = content->GetFirstChild(); |
| 837 | for (size_t i = 0; i < newItems.Length(); i++) { |
| 838 | const auto& item = newItems[i]; |
| 839 | const bool isString = item.IsString(); |
| 840 | if (isString && item.AsString().AsString().IsEmpty()) { |
| 841 | // Empty strings have no associated content node. |
| 842 | continue; |
| 843 | } |
| 844 | MOZ_ASSERT(child,do { static_assert( mozilla::detail::AssertionConditionType< decltype(child)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(child))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("child" " (" "Mismatch between content items and generated content nodes?" ")", "./../../../layout/generic/nsIFrame.cpp", 845); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "child" ") (" "Mismatch between content items and generated content nodes?" ")"); do { MOZ_CrashSequence(__null, 845); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 845 | "Mismatch between content items and generated content nodes?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(child)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(child))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("child" " (" "Mismatch between content items and generated content nodes?" ")", "./../../../layout/generic/nsIFrame.cpp", 845); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "child" ") (" "Mismatch between content items and generated content nodes?" ")"); do { MOZ_CrashSequence(__null, 845); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 846 | if (isString && item != oldItems[i]) { |
| 847 | MOZ_ASSERT(child->IsText(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(child->IsText())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(child->IsText()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("child->IsText()" " (" "A non-empty string item should map to a text node" ")" , "./../../../layout/generic/nsIFrame.cpp", 848); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "child->IsText()" ") (" "A non-empty string item should map to a text node" ")"); do { MOZ_CrashSequence(__null, 848); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 848 | "A non-empty string item should map to a text node")do { static_assert( mozilla::detail::AssertionConditionType< decltype(child->IsText())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(child->IsText()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("child->IsText()" " (" "A non-empty string item should map to a text node" ")" , "./../../../layout/generic/nsIFrame.cpp", 848); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "child->IsText()" ") (" "A non-empty string item should map to a text node" ")"); do { MOZ_CrashSequence(__null, 848); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 849 | child->AsText()->SetText( |
| 850 | NS_ConvertUTF8toUTF16(item.AsString().AsString()), |
| 851 | /* aNotify = */ true); |
| 852 | } |
| 853 | child = child->GetNextSibling(); |
| 854 | } |
| 855 | MOZ_ASSERT(!child, "More generated content than content items.")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!child)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(!child))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!child" " (" "More generated content than content items." ")", "./../../../layout/generic/nsIFrame.cpp", 855); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!child" ") (" "More generated content than content items." ")"); do { MOZ_CrashSequence(__null, 855); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 856 | } |
| 857 | |
| 858 | void nsIFrame::HandlePrimaryFrameStyleChange(ComputedStyle* aOldStyle) { |
| 859 | const nsStyleDisplay* disp = StyleDisplay(); |
| 860 | const nsStyleDisplay* oldDisp = |
| 861 | aOldStyle ? aOldStyle->StyleDisplay() : nullptr; |
| 862 | |
| 863 | const bool wasQueryContainer = oldDisp && oldDisp->IsQueryContainer(); |
| 864 | const bool isQueryContainer = disp->IsQueryContainer(); |
| 865 | if (wasQueryContainer != isQueryContainer) { |
| 866 | auto* pc = PresContext(); |
| 867 | if (isQueryContainer) { |
| 868 | pc->RegisterContainerQueryFrame(this); |
| 869 | } else { |
| 870 | pc->UnregisterContainerQueryFrame(this); |
| 871 | } |
| 872 | } |
| 873 | |
| 874 | const bool wasReferringToAnchor = aOldStyle && |
| 875 | oldDisp->IsAbsolutelyPositionedStyle() && |
| 876 | aOldStyle->HasAnchorPosReference(); |
| 877 | const bool isReferringToAnchor = HasAnchorPosReference(); |
| 878 | if (wasReferringToAnchor && !isReferringToAnchor) { |
| 879 | PresShell()->RemoveAnchorPosPositioned(this); |
| 880 | RemoveProperty(NormalPositionProperty()); |
| 881 | } else if (!wasReferringToAnchor && isReferringToAnchor) { |
| 882 | PresShell()->AddAnchorPosPositioned(this); |
| 883 | } |
| 884 | |
| 885 | bool handleAnchorPosAnchorNameChange = |
| 886 | oldDisp ? oldDisp->mAnchorName != disp->mAnchorName |
| 887 | : disp->HasAnchorName(); |
| 888 | if (handleAnchorPosAnchorNameChange && |
| 889 | !HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 890 | if (oldDisp && oldDisp->HasAnchorName()) { |
| 891 | PresShell()->RemoveAnchorPosAnchor(oldDisp->mAnchorName.AsSpan(), this); |
| 892 | } |
| 893 | PresShell()->AddAnchorPosAnchor(disp->mAnchorName.AsSpan(), this); |
| 894 | } |
| 895 | |
| 896 | // According to the Anchor Positioning spec, |
| 897 | // https://drafts.csswg.org/css-anchor-position-1/#last-successful-position-option: |
| 898 | // |
| 899 | // If el has a last successful position option remove its last successful |
| 900 | // position option if any of the following are true: |
| 901 | // 1. Its computed position value has changed, its containing block has |
| 902 | // changed, or it no longer generates a box. |
| 903 | // 2. Its computed value for any longhand of position-try has changed. |
| 904 | // 3. Its computed value for any @position-try property has changed. |
| 905 | // 4. Any of the @position-try rules referenced by it have been added, |
| 906 | // removed, or mutated. |
| 907 | // |
| 908 | // Case 1 will cause a reframe, so does not need to be handled here. |
| 909 | // Cases 2 and 3 are handled here. |
| 910 | // TODO: case 4, see bug 1987960. |
| 911 | if (aOldStyle && HasAnyStateBits(NS_FRAME_OUT_OF_FLOW) && |
| 912 | HasProperty(LastSuccessfulPositionFallback())) { |
| 913 | const auto* pos = StylePosition(); |
| 914 | const auto* oldPos = aOldStyle->StylePosition(); |
| 915 | if (pos->mPositionTryFallbacks != oldPos->mPositionTryFallbacks || |
| 916 | pos->mPositionTryOrder != oldPos->mPositionTryOrder || |
| 917 | pos->mOffset != oldPos->mOffset || |
| 918 | pos->mAlignSelf != oldPos->mAlignSelf || |
| 919 | pos->mJustifySelf != oldPos->mJustifySelf || |
| 920 | pos->mPositionAnchor != oldPos->mPositionAnchor || |
| 921 | pos->mPositionArea != oldPos->mPositionArea || |
| 922 | pos->mMinWidth != oldPos->mMinWidth || |
| 923 | pos->mMinHeight != oldPos->mMinHeight || |
| 924 | pos->mMaxWidth != oldPos->mMaxWidth || |
| 925 | pos->mMaxHeight != oldPos->mMaxHeight || |
| 926 | pos->mWidth != oldPos->mWidth || pos->mHeight != oldPos->mHeight || |
| 927 | StyleMargin()->mMargin != aOldStyle->StyleMargin()->mMargin) { |
| 928 | RemoveProperty(LastSuccessfulPositionFallback()); |
| 929 | } |
| 930 | } |
| 931 | |
| 932 | const auto cv = disp->ContentVisibility(*this); |
| 933 | const auto oldCv = oldDisp ? oldDisp->ContentVisibility(*this) |
| 934 | : StyleContentVisibility::Visible; |
| 935 | if (!oldDisp || cv != oldCv) { |
| 936 | // 'content-visibility' has changed (or this is a new frame being |
| 937 | // initialized). Inform PresShell so it can update its bookkeeping |
| 938 | // about frames with particular content-visibility values: |
| 939 | // * Inform it of the new value (for the values that it cares about): |
| 940 | if (cv == StyleContentVisibility::Hidden) { |
| 941 | PresShell()->IncrementContentVisibilityHiddenCount(); |
| 942 | } else if (cv == StyleContentVisibility::Auto) { |
| 943 | PresShell()->RegisterContentVisibilityAutoFrame(this); |
| 944 | } |
| 945 | |
| 946 | // * Inform it of the old value (for the values that it cares about): |
| 947 | if (oldCv == StyleContentVisibility::Hidden) { |
| 948 | PresShell()->DecrementContentVisibilityHiddenCount(); |
| 949 | } else if (oldCv == StyleContentVisibility::Auto) { |
| 950 | if (auto* element = Element::FromNodeOrNull(GetContent())) { |
| 951 | element->ClearContentRelevancy(); |
| 952 | } |
| 953 | PresShell()->UnregisterContentVisibilityAutoFrame(this); |
| 954 | } |
| 955 | PresContext()->SetNeedsToUpdateHiddenByContentVisibilityForAnimations(); |
| 956 | } |
| 957 | |
| 958 | HandleLastRememberedSize(); |
| 959 | |
| 960 | bool handleStickyChange = |
| 961 | oldDisp ? (disp->mPosition != oldDisp->mPosition && |
| 962 | (disp->mPosition == StylePositionProperty::Sticky || |
| 963 | oldDisp->mPosition == StylePositionProperty::Sticky)) |
| 964 | : disp->mPosition == StylePositionProperty::Sticky; |
| 965 | if (handleStickyChange && |
| 966 | !HasAnyStateBits(NS_FRAME_IS_NONDISPLAY | NS_FRAME_SVG_LAYOUT)) { |
| 967 | if (auto* ssc = StickyScrollContainer::GetOrCreateForFrame(this)) { |
| 968 | if (IsStickyPositioned()) { |
| 969 | ssc->AddFrame(this); |
| 970 | } else { |
| 971 | ssc->RemoveFrame(this); |
| 972 | } |
| 973 | } |
| 974 | } |
| 975 | } |
| 976 | |
| 977 | void nsIFrame::Destroy(DestroyContext& aContext) { |
| 978 | NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),do { if (!(!nsContentUtils::IsSafeToRunScript())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "destroy called on frame while scripts not blocked" , "!nsContentUtils::IsSafeToRunScript()", "./../../../layout/generic/nsIFrame.cpp" , 979); MOZ_PretendNoReturn(); } } while (0) |
| 979 | "destroy called on frame while scripts not blocked")do { if (!(!nsContentUtils::IsSafeToRunScript())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "destroy called on frame while scripts not blocked" , "!nsContentUtils::IsSafeToRunScript()", "./../../../layout/generic/nsIFrame.cpp" , 979); MOZ_PretendNoReturn(); } } while (0); |
| 980 | NS_ASSERTION(!GetNextSibling() && !GetPrevSibling(),do { if (!(!GetNextSibling() && !GetPrevSibling())) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Frames should be removed before destruction." , "!GetNextSibling() && !GetPrevSibling()", "./../../../layout/generic/nsIFrame.cpp" , 981); MOZ_PretendNoReturn(); } } while (0) |
| 981 | "Frames should be removed before destruction.")do { if (!(!GetNextSibling() && !GetPrevSibling())) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Frames should be removed before destruction." , "!GetNextSibling() && !GetPrevSibling()", "./../../../layout/generic/nsIFrame.cpp" , 981); MOZ_PretendNoReturn(); } } while (0); |
| 982 | MOZ_ASSERT(!HasAbsolutelyPositionedChildren())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAbsolutelyPositionedChildren())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!HasAbsolutelyPositionedChildren ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!HasAbsolutelyPositionedChildren()", "./../../../layout/generic/nsIFrame.cpp" , 982); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAbsolutelyPositionedChildren()" ")"); do { MOZ_CrashSequence(__null, 982); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 983 | MOZ_ASSERT(!HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)" " (" "NS_FRAME_PART_OF_IBSPLIT set on non-nsContainerFrame?" ")", "./../../../layout/generic/nsIFrame.cpp", 984); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)" ") (" "NS_FRAME_PART_OF_IBSPLIT set on non-nsContainerFrame?" ")"); do { MOZ_CrashSequence(__null, 984); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 984 | "NS_FRAME_PART_OF_IBSPLIT set on non-nsContainerFrame?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)" " (" "NS_FRAME_PART_OF_IBSPLIT set on non-nsContainerFrame?" ")", "./../../../layout/generic/nsIFrame.cpp", 984); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)" ") (" "NS_FRAME_PART_OF_IBSPLIT set on non-nsContainerFrame?" ")"); do { MOZ_CrashSequence(__null, 984); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 985 | |
| 986 | MaybeScheduleReflowSVGNonDisplayText(this); |
| 987 | |
| 988 | SVGObserverUtils::InvalidateDirectRenderingObservers( |
| 989 | this, SVGObserverUtils::InvalidationFlag::FrameBeingDestroyed); |
| 990 | |
| 991 | if (IsStickyPositioned()) { |
| 992 | if (auto* ssc = StickyScrollContainer::GetForFrame(this)) { |
| 993 | ssc->RemoveFrame(this); |
| 994 | } |
| 995 | } |
| 996 | |
| 997 | if (HasAnyStateBits(NS_FRAME_OUT_OF_FLOW)) { |
| 998 | if (nsPlaceholderFrame* placeholder = GetPlaceholderFrame()) { |
| 999 | placeholder->SetOutOfFlowFrame(nullptr); |
| 1000 | } |
| 1001 | } |
| 1002 | |
| 1003 | nsPresContext* pc = PresContext(); |
| 1004 | mozilla::PresShell* ps = pc->GetPresShell(); |
| 1005 | const auto* disp = StyleDisplay(); |
| 1006 | if (IsPrimaryFrame()) { |
| 1007 | if (disp->IsQueryContainer()) { |
| 1008 | pc->UnregisterContainerQueryFrame(this); |
| 1009 | } |
| 1010 | auto contentVisibility = disp->ContentVisibility(*this); |
| 1011 | if (contentVisibility == StyleContentVisibility::Hidden) { |
| 1012 | ps->DecrementContentVisibilityHiddenCount(); |
| 1013 | } else if (contentVisibility == StyleContentVisibility::Auto) { |
| 1014 | ps->UnregisterContentVisibilityAutoFrame(this); |
| 1015 | } |
| 1016 | // This needs to happen before we clear our Properties() table. |
| 1017 | ActiveLayerTracker::TransferActivityToContent(this, mContent); |
| 1018 | } |
| 1019 | |
| 1020 | ScrollAnchorContainer* anchor = nullptr; |
| 1021 | if (IsScrollAnchor(&anchor)) { |
| 1022 | anchor->InvalidateAnchor(); |
| 1023 | } |
| 1024 | |
| 1025 | if (HasCSSAnimations() || HasCSSTransitions() || |
| 1026 | // It's fine to look up the style frame here since if we're destroying the |
| 1027 | // frames for display:table content we should be destroying both wrapper |
| 1028 | // and inner frame. |
| 1029 | EffectSet::GetForStyleFrame(this)) { |
| 1030 | // If no new frame for this element is created by the end of the |
| 1031 | // restyling process, stop animations and transitions for this frame |
| 1032 | RestyleManager::AnimationsWithDestroyedFrame* adf = |
| 1033 | pc->RestyleManager()->GetAnimationsWithDestroyedFrame(); |
| 1034 | // AnimationsWithDestroyedFrame only lives during the restyling process. |
| 1035 | if (adf) { |
| 1036 | adf->Put(mContent, mComputedStyle); |
| 1037 | } |
| 1038 | } |
| 1039 | |
| 1040 | if (HasAnchorPosName()) { |
| 1041 | PresShell()->RemoveAnchorPosAnchor(disp->mAnchorName.AsSpan(), this); |
| 1042 | } |
| 1043 | |
| 1044 | if (HasAnchorPosReference()) { |
| 1045 | ps->RemoveAnchorPosPositioned(this); |
| 1046 | } |
| 1047 | |
| 1048 | // Disable visibility tracking. Note that we have to do this before we clear |
| 1049 | // frame properties and lose track of whether we were previously visible. |
| 1050 | // XXX(seth): It'd be ideal to assert that we're already marked nonvisible |
| 1051 | // here, but it's unfortunately tricky to guarantee in the face of things like |
| 1052 | // frame reconstruction induced by style changes. |
| 1053 | DisableVisibilityTracking(); |
| 1054 | |
| 1055 | // Ensure that we're not in the approximately visible list anymore. |
| 1056 | ps->RemoveFrameFromApproximatelyVisibleList(this); |
| 1057 | |
| 1058 | ps->NotifyDestroyingFrame(this); |
| 1059 | |
| 1060 | if (HasAnyStateBits(NS_FRAME_EXTERNAL_REFERENCE)) { |
| 1061 | ps->ClearFrameRefs(this); |
| 1062 | } |
| 1063 | |
| 1064 | // Make sure that our deleted frame can't be returned from GetPrimaryFrame() |
| 1065 | if (IsPrimaryFrame()) { |
| 1066 | mContent->SetPrimaryFrame(nullptr); |
| 1067 | |
| 1068 | // Pass the root of a generated content subtree (e.g. ::after/::before) to |
| 1069 | // aPostDestroyData to unbind it after frame destruction is done. |
| 1070 | if (HasAnyStateBits(NS_FRAME_GENERATED_CONTENT) && |
| 1071 | mContent->IsRootOfNativeAnonymousSubtree()) { |
| 1072 | aContext.AddAnonymousContent(mContent.forget()); |
| 1073 | } |
| 1074 | } |
| 1075 | |
| 1076 | // Remove all properties attached to the frame, to ensure any property |
| 1077 | // destructors that need the frame pointer are handled properly. |
| 1078 | RemoveAllProperties(); |
| 1079 | |
| 1080 | // Must retrieve the object ID before calling destructors, so the |
| 1081 | // vtable is still valid. |
| 1082 | // |
| 1083 | // Note to future tweakers: having the method that returns the |
| 1084 | // object size call the destructor will not avoid an indirect call; |
| 1085 | // the compiler cannot devirtualize the call to the destructor even |
| 1086 | // if it's from a method defined in the same class. |
| 1087 | |
| 1088 | nsQueryFrame::FrameIID id = GetFrameId(); |
| 1089 | this->~nsIFrame(); |
| 1090 | |
| 1091 | #ifdef DEBUG1 |
| 1092 | { |
| 1093 | nsIFrame* rootFrame = ps->GetRootFrame(); |
| 1094 | MOZ_ASSERT(rootFrame)do { static_assert( mozilla::detail::AssertionConditionType< decltype(rootFrame)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(rootFrame))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("rootFrame", "./../../../layout/generic/nsIFrame.cpp" , 1094); AnnotateMozCrashReason("MOZ_ASSERT" "(" "rootFrame" ")" ); do { MOZ_CrashSequence(__null, 1094); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1095 | if (this != rootFrame) { |
| 1096 | auto* builder = nsLayoutUtils::GetRetainedDisplayListBuilder(rootFrame); |
| 1097 | auto* data = builder ? builder->Data() : nullptr; |
| 1098 | |
| 1099 | const bool inData = |
| 1100 | data && (data->IsModified(this) || data->HasProps(this)); |
| 1101 | |
| 1102 | if (inData) { |
| 1103 | DL_LOG(LogLevel::Warning, "Frame %p found in retained data", this)do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Warning)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Warning, "Frame %p found in retained data", this) ; } } while (0); |
| 1104 | } |
| 1105 | |
| 1106 | MOZ_ASSERT(!inData, "Deleted frame in retained data!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!inData)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!inData))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!inData" " (" "Deleted frame in retained data!" ")", "./../../../layout/generic/nsIFrame.cpp", 1106); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!inData" ") (" "Deleted frame in retained data!" ")"); do { MOZ_CrashSequence(__null, 1106); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1107 | } |
| 1108 | } |
| 1109 | #endif |
| 1110 | |
| 1111 | // Now that we're totally cleaned out, we need to add ourselves to |
| 1112 | // the frame arena. |
| 1113 | FrameArena::Free(id, this); |
| 1114 | } |
| 1115 | |
| 1116 | std::pair<int32_t, int32_t> nsIFrame::GetOffsets() const { |
| 1117 | return std::make_pair(0, 0); |
| 1118 | } |
| 1119 | |
| 1120 | static void CompareLayers( |
| 1121 | const nsStyleImageLayers* aFirstLayers, |
| 1122 | const nsStyleImageLayers* aSecondLayers, |
| 1123 | const std::function<void(imgRequestProxy* aReq)>& aCallback) { |
| 1124 | NS_FOR_VISIBLE_IMAGE_LAYERS_BACK_TO_FRONT(i, (*aFirstLayers))for (uint32_t i = ((*aFirstLayers)).mImageCount; (i)-- != 0;) { |
| 1125 | const auto& image = aFirstLayers->mLayers[i].mImage; |
| 1126 | if (!image.IsImageRequestType() || !image.IsResolved()) { |
| 1127 | continue; |
| 1128 | } |
| 1129 | |
| 1130 | // aCallback is called when the style image in aFirstLayers is thought to |
| 1131 | // be different with the corresponded one in aSecondLayers |
| 1132 | if (!aSecondLayers || i >= aSecondLayers->mImageCount || |
| 1133 | (!aSecondLayers->mLayers[i].mImage.IsResolved() || |
| 1134 | image.GetImageRequest() != |
| 1135 | aSecondLayers->mLayers[i].mImage.GetImageRequest())) { |
| 1136 | if (imgRequestProxy* req = image.GetImageRequest()) { |
| 1137 | aCallback(req); |
| 1138 | } |
| 1139 | } |
| 1140 | } |
| 1141 | } |
| 1142 | |
| 1143 | static void AddAndRemoveImageAssociations( |
| 1144 | ImageLoader& aImageLoader, nsIFrame* aFrame, |
| 1145 | const nsStyleImageLayers* aOldLayers, |
| 1146 | const nsStyleImageLayers* aNewLayers) { |
| 1147 | // If the old context had a background-image image, or mask-image image, |
| 1148 | // and new context does not have the same image, clear the image load |
| 1149 | // notifier (which keeps the image loading, if it still is) for the frame. |
| 1150 | // We want to do this conservatively because some frames paint their |
| 1151 | // backgrounds from some other frame's style data, and we don't want |
| 1152 | // to clear those notifiers unless we have to. (They'll be reset |
| 1153 | // when we paint, although we could miss a notification in that |
| 1154 | // interval.) |
| 1155 | if (aOldLayers && aFrame->HasImageRequest()) { |
| 1156 | CompareLayers(aOldLayers, aNewLayers, [&](imgRequestProxy* aReq) { |
| 1157 | aImageLoader.DisassociateRequestFromFrame(aReq, aFrame); |
| 1158 | }); |
| 1159 | } |
| 1160 | |
| 1161 | CompareLayers(aNewLayers, aOldLayers, [&](imgRequestProxy* aReq) { |
| 1162 | aImageLoader.AssociateRequestToFrame(aReq, aFrame); |
| 1163 | }); |
| 1164 | } |
| 1165 | |
| 1166 | void nsIFrame::AddDisplayItem(nsDisplayItem* aItem) { |
| 1167 | MOZ_DIAGNOSTIC_ASSERT(!mDisplayItems.Contains(aItem))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mDisplayItems.Contains(aItem))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!mDisplayItems.Contains(aItem )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!mDisplayItems.Contains(aItem)", "./../../../layout/generic/nsIFrame.cpp" , 1167); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "!mDisplayItems.Contains(aItem)" ")"); do { MOZ_CrashSequence(__null, 1167); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1168 | mDisplayItems.AppendElement(aItem); |
| 1169 | #ifdef ACCESSIBILITY1 |
| 1170 | if (nsAccessibilityService* accService = GetAccService()) { |
| 1171 | accService->NotifyOfPossibleBoundsChange(PresShell(), mContent); |
| 1172 | } |
| 1173 | #endif |
| 1174 | } |
| 1175 | |
| 1176 | bool nsIFrame::RemoveDisplayItem(nsDisplayItem* aItem) { |
| 1177 | return mDisplayItems.RemoveElement(aItem); |
| 1178 | } |
| 1179 | |
| 1180 | bool nsIFrame::HasDisplayItems() { return !mDisplayItems.IsEmpty(); } |
| 1181 | |
| 1182 | bool nsIFrame::HasDisplayItem(nsDisplayItem* aItem) { |
| 1183 | return mDisplayItems.Contains(aItem); |
| 1184 | } |
| 1185 | |
| 1186 | bool nsIFrame::HasDisplayItem(uint32_t aKey) { |
| 1187 | for (nsDisplayItem* i : mDisplayItems) { |
| 1188 | if (i->GetPerFrameKey() == aKey) { |
| 1189 | return true; |
| 1190 | } |
| 1191 | } |
| 1192 | return false; |
| 1193 | } |
| 1194 | |
| 1195 | template <typename Condition> |
| 1196 | static void DiscardDisplayItems(nsIFrame* aFrame, Condition aCondition) { |
| 1197 | for (nsDisplayItem* i : aFrame->DisplayItems()) { |
| 1198 | // Only discard items that are invalidated by this frame, as we're only |
| 1199 | // guaranteed to rebuild those items. Table background items are created by |
| 1200 | // the relevant table part, but have the cell frame as the primary frame, |
| 1201 | // and we don't want to remove them if this is the cell. |
| 1202 | if (aCondition(i) && i->FrameForInvalidation() == aFrame) { |
| 1203 | i->SetCantBeReused(); |
| 1204 | } |
| 1205 | } |
| 1206 | } |
| 1207 | |
| 1208 | static void DiscardOldItems(nsIFrame* aFrame) { |
| 1209 | DiscardDisplayItems(aFrame, |
| 1210 | [](nsDisplayItem* aItem) { return aItem->IsOldItem(); }); |
| 1211 | } |
| 1212 | |
| 1213 | void nsIFrame::RemoveDisplayItemDataForDeletion() { |
| 1214 | // Destroying a WebRenderUserDataTable can cause destruction of other objects |
| 1215 | // which can remove frame properties in their destructor. If we delete a frame |
| 1216 | // property it runs the destructor of the stored object in the middle of |
| 1217 | // updating the frame property table, so if the destruction of that object |
| 1218 | // causes another update to the frame property table it would leave the frame |
| 1219 | // property table in an inconsistent state. So we remove it from the table and |
| 1220 | // then destroy it. (bug 1530657) |
| 1221 | WebRenderUserDataTable* userDataTable = |
| 1222 | TakeProperty(WebRenderUserDataProperty::Key()); |
| 1223 | if (userDataTable) { |
| 1224 | for (const auto& data : userDataTable->Values()) { |
| 1225 | data->RemoveFromTable(); |
| 1226 | } |
| 1227 | delete userDataTable; |
| 1228 | } |
| 1229 | |
| 1230 | auto* builder = nsLayoutUtils::GetRetainedDisplayListBuilder(this); |
| 1231 | if (!builder) { |
| 1232 | MOZ_ASSERT(DisplayItems().IsEmpty())do { static_assert( mozilla::detail::AssertionConditionType< decltype(DisplayItems().IsEmpty())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(DisplayItems().IsEmpty()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("DisplayItems().IsEmpty()" , "./../../../layout/generic/nsIFrame.cpp", 1232); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "DisplayItems().IsEmpty()" ")"); do { MOZ_CrashSequence (__null, 1232); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1233 | MOZ_ASSERT(!IsFrameModified())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!IsFrameModified())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!IsFrameModified()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!IsFrameModified()" , "./../../../layout/generic/nsIFrame.cpp", 1233); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!IsFrameModified()" ")"); do { MOZ_CrashSequence (__null, 1233); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1234 | return; |
| 1235 | } |
| 1236 | |
| 1237 | for (nsDisplayItem* i : DisplayItems()) { |
| 1238 | if (i->GetDependentFrame() == this && !i->HasDeletedFrame()) { |
| 1239 | i->Frame()->MarkNeedsDisplayItemRebuild(); |
| 1240 | } |
| 1241 | i->RemoveFrame(this); |
| 1242 | } |
| 1243 | |
| 1244 | DisplayItems().Clear(); |
| 1245 | |
| 1246 | nsAutoString name; |
| 1247 | #ifdef DEBUG_FRAME_DUMP1 |
| 1248 | if (DL_LOG_TEST(LogLevel::Debug)(__builtin_expect(!!(mozilla::detail::log_test(GetLoggerByProcess (), LogLevel::Debug)), 0))) { |
| 1249 | GetFrameName(name); |
| 1250 | } |
| 1251 | #endif |
| 1252 | DL_LOGV("Removing display item data for frame %p (%s)", this,do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Verbose)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Verbose, "Removing display item data for frame %p (%s)" , this, NS_ConvertUTF16toUTF8(name).get()); } } while (0) |
| 1253 | NS_ConvertUTF16toUTF8(name).get())do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Verbose)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Verbose, "Removing display item data for frame %p (%s)" , this, NS_ConvertUTF16toUTF8(name).get()); } } while (0); |
| 1254 | |
| 1255 | builder->Data()->Remove(this); |
| 1256 | } |
| 1257 | |
| 1258 | void nsIFrame::MarkNeedsDisplayItemRebuild() { |
| 1259 | if (!nsLayoutUtils::AreRetainedDisplayListsEnabled() || IsFrameModified() || |
| 1260 | HasAnyStateBits(NS_FRAME_IN_POPUP)) { |
| 1261 | // Skip frames that are already marked modified. |
| 1262 | return; |
| 1263 | } |
| 1264 | |
| 1265 | if (Type() == LayoutFrameType::Placeholder) { |
| 1266 | nsIFrame* oof = static_cast<nsPlaceholderFrame*>(this)->GetOutOfFlowFrame(); |
| 1267 | if (oof) { |
| 1268 | oof->MarkNeedsDisplayItemRebuild(); |
| 1269 | } |
| 1270 | // Do not mark placeholder frames modified. |
| 1271 | return; |
| 1272 | } |
| 1273 | |
| 1274 | #ifdef ACCESSIBILITY1 |
| 1275 | if (nsAccessibilityService* accService = GetAccService()) { |
| 1276 | accService->NotifyOfPossibleBoundsChange(PresShell(), mContent); |
| 1277 | } |
| 1278 | #endif |
| 1279 | |
| 1280 | nsIFrame* rootFrame = PresShell()->GetRootFrame(); |
| 1281 | |
| 1282 | if (rootFrame->IsFrameModified()) { |
| 1283 | // The whole frame tree is modified. |
| 1284 | return; |
| 1285 | } |
| 1286 | |
| 1287 | auto* builder = nsLayoutUtils::GetRetainedDisplayListBuilder(this); |
| 1288 | if (!builder) { |
| 1289 | MOZ_ASSERT(DisplayItems().IsEmpty())do { static_assert( mozilla::detail::AssertionConditionType< decltype(DisplayItems().IsEmpty())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(DisplayItems().IsEmpty()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("DisplayItems().IsEmpty()" , "./../../../layout/generic/nsIFrame.cpp", 1289); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "DisplayItems().IsEmpty()" ")"); do { MOZ_CrashSequence (__null, 1289); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1290 | return; |
| 1291 | } |
| 1292 | |
| 1293 | RetainedDisplayListData* data = builder->Data(); |
| 1294 | MOZ_ASSERT(data)do { static_assert( mozilla::detail::AssertionConditionType< decltype(data)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(data))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("data", "./../../../layout/generic/nsIFrame.cpp" , 1294); AnnotateMozCrashReason("MOZ_ASSERT" "(" "data" ")"); do { MOZ_CrashSequence(__null, 1294); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1295 | |
| 1296 | if (data->AtModifiedFrameLimit()) { |
| 1297 | // This marks the whole frame tree modified. |
| 1298 | // See |RetainedDisplayListBuilder::ShouldBuildPartial()|. |
| 1299 | data->AddModifiedFrame(rootFrame); |
| 1300 | return; |
| 1301 | } |
| 1302 | |
| 1303 | nsAutoString name; |
| 1304 | #ifdef DEBUG_FRAME_DUMP1 |
| 1305 | if (DL_LOG_TEST(LogLevel::Debug)(__builtin_expect(!!(mozilla::detail::log_test(GetLoggerByProcess (), LogLevel::Debug)), 0))) { |
| 1306 | GetFrameName(name); |
| 1307 | } |
| 1308 | #endif |
| 1309 | |
| 1310 | DL_LOGV("RDL - Rebuilding display items for frame %p (%s)", this,do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Verbose)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Verbose, "RDL - Rebuilding display items for frame %p (%s)" , this, NS_ConvertUTF16toUTF8(name).get()); } } while (0) |
| 1311 | NS_ConvertUTF16toUTF8(name).get())do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Verbose)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Verbose, "RDL - Rebuilding display items for frame %p (%s)" , this, NS_ConvertUTF16toUTF8(name).get()); } } while (0); |
| 1312 | |
| 1313 | data->AddModifiedFrame(this); |
| 1314 | |
| 1315 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(PresContext()->LayoutPhaseCount(nsLayoutPhase::DisplayListBuilding ) == 0)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(PresContext()->LayoutPhaseCount(nsLayoutPhase::DisplayListBuilding ) == 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("PresContext()->LayoutPhaseCount(nsLayoutPhase::DisplayListBuilding) == 0" , "./../../../layout/generic/nsIFrame.cpp", 1316); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "PresContext()->LayoutPhaseCount(nsLayoutPhase::DisplayListBuilding) == 0" ")"); do { MOZ_CrashSequence(__null, 1316); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1316 | PresContext()->LayoutPhaseCount(nsLayoutPhase::DisplayListBuilding) == 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(PresContext()->LayoutPhaseCount(nsLayoutPhase::DisplayListBuilding ) == 0)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(PresContext()->LayoutPhaseCount(nsLayoutPhase::DisplayListBuilding ) == 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("PresContext()->LayoutPhaseCount(nsLayoutPhase::DisplayListBuilding) == 0" , "./../../../layout/generic/nsIFrame.cpp", 1316); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "PresContext()->LayoutPhaseCount(nsLayoutPhase::DisplayListBuilding) == 0" ")"); do { MOZ_CrashSequence(__null, 1316); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1317 | |
| 1318 | // Hopefully this is cheap, but we could use a frame state bit to note |
| 1319 | // the presence of dependencies to speed it up. |
| 1320 | for (nsDisplayItem* i : DisplayItems()) { |
| 1321 | if (i->HasDeletedFrame() || i->Frame() == this) { |
| 1322 | // Ignore the items with deleted frames, and the items with |this| as |
| 1323 | // the primary frame. |
| 1324 | continue; |
| 1325 | } |
| 1326 | |
| 1327 | if (i->GetDependentFrame() == this) { |
| 1328 | // For items with |this| as a dependent frame, mark the primary frame |
| 1329 | // for rebuild. |
| 1330 | i->Frame()->MarkNeedsDisplayItemRebuild(); |
| 1331 | } |
| 1332 | } |
| 1333 | } |
| 1334 | |
| 1335 | // Subclass hook for style post processing |
| 1336 | /* virtual */ |
| 1337 | void nsIFrame::DidSetComputedStyle(ComputedStyle* aOldComputedStyle) { |
| 1338 | if (aOldComputedStyle) { |
| 1339 | #ifdef ACCESSIBILITY1 |
| 1340 | // Don't notify for reconstructed frames here, since the frame is still |
| 1341 | // being constructed at this point and so LocalAccessible::GetFrame() will |
| 1342 | // return null. Style changes for reconstructed frames are handled in |
| 1343 | // DocAccessible::PruneOrInsertSubtree. |
| 1344 | if (nsAccessibilityService* accService = GetAccService()) { |
| 1345 | accService->NotifyOfComputedStyleChange(PresShell(), mContent); |
| 1346 | } |
| 1347 | #endif |
| 1348 | UpdateGeneratedContentTextIfNeeded(this, aOldComputedStyle); |
| 1349 | } |
| 1350 | |
| 1351 | MaybeScheduleReflowSVGNonDisplayText(this); |
| 1352 | |
| 1353 | Document* doc = PresContext()->Document(); |
| 1354 | ImageLoader& loader = doc->EnsureStyleImageLoader(); |
| 1355 | // Continuing text frame doesn't initialize its continuation pointer before |
| 1356 | // reaching here for the first time, so we have to exclude text frames. This |
| 1357 | // doesn't affect correctness because text can't match selectors. |
| 1358 | // |
| 1359 | // FIXME(emilio): We should consider fixing that. |
| 1360 | // |
| 1361 | // TODO(emilio): Can we avoid doing some / all of the image stuff when |
| 1362 | // isNonTextFirstContinuation is false? We should consider doing this just for |
| 1363 | // primary frames and pseudos, but the first-line reparenting code makes it |
| 1364 | // all bad, should get around to bug 1465474 eventually :( |
| 1365 | const bool isNonText = !IsTextFrame(); |
| 1366 | if (isNonText) { |
| 1367 | mComputedStyle->StartImageLoads(*doc, aOldComputedStyle); |
| 1368 | } |
| 1369 | |
| 1370 | const bool isRootElementStyle = Style()->IsRootElementStyle(); |
| 1371 | if (isRootElementStyle) { |
| 1372 | PresShell()->SetNeedsWindowPropertiesSync(); |
| 1373 | } |
| 1374 | |
| 1375 | const nsStyleImageLayers* oldLayers = |
| 1376 | aOldComputedStyle ? &aOldComputedStyle->StyleBackground()->mImage |
| 1377 | : nullptr; |
| 1378 | const nsStyleImageLayers* newLayers = &StyleBackground()->mImage; |
| 1379 | AddAndRemoveImageAssociations(loader, this, oldLayers, newLayers); |
| 1380 | |
| 1381 | oldLayers = |
| 1382 | aOldComputedStyle ? &aOldComputedStyle->StyleSVGReset()->mMask : nullptr; |
| 1383 | newLayers = &StyleSVGReset()->mMask; |
| 1384 | AddAndRemoveImageAssociations(loader, this, oldLayers, newLayers); |
| 1385 | |
| 1386 | const nsStyleDisplay* disp = StyleDisplay(); |
| 1387 | if (aOldComputedStyle) { |
| 1388 | // Detect style changes that should trigger a scroll anchor adjustment |
| 1389 | // suppression. |
| 1390 | // https://drafts.csswg.org/css-scroll-anchoring/#suppression-triggers |
| 1391 | bool needScrollAnchorSuppression = false; |
| 1392 | |
| 1393 | const nsStyleMargin* oldMargin = aOldComputedStyle->StyleMargin(); |
| 1394 | if (!oldMargin->MarginEquals(*StyleMargin())) { |
| 1395 | needScrollAnchorSuppression = true; |
| 1396 | } |
| 1397 | |
| 1398 | const nsStylePadding* oldPadding = aOldComputedStyle->StylePadding(); |
| 1399 | if (oldPadding->mPadding != StylePadding()->mPadding) { |
| 1400 | SetHasPaddingChange(true); |
| 1401 | needScrollAnchorSuppression = true; |
| 1402 | } |
| 1403 | |
| 1404 | const nsStyleDisplay* oldDisp = aOldComputedStyle->StyleDisplay(); |
| 1405 | if (oldDisp->mOverflowAnchor != disp->mOverflowAnchor) { |
| 1406 | if (auto* container = ScrollAnchorContainer::FindFor(this)) { |
| 1407 | container->InvalidateAnchor(); |
| 1408 | } |
| 1409 | if (ScrollContainerFrame* scrollContainerFrame = do_QueryFrame(this)) { |
| 1410 | scrollContainerFrame->Anchor()->InvalidateAnchor(); |
| 1411 | } |
| 1412 | } |
| 1413 | |
| 1414 | if (mInScrollAnchorChain) { |
| 1415 | const nsStylePosition* pos = StylePosition(); |
| 1416 | const nsStylePosition* oldPos = aOldComputedStyle->StylePosition(); |
| 1417 | if (!needScrollAnchorSuppression && |
| 1418 | (oldPos->mOffset != pos->mOffset || oldPos->mWidth != pos->mWidth || |
| 1419 | oldPos->mMinWidth != pos->mMinWidth || |
| 1420 | oldPos->mMaxWidth != pos->mMaxWidth || |
| 1421 | oldPos->mHeight != pos->mHeight || |
| 1422 | oldPos->mMinHeight != pos->mMinHeight || |
| 1423 | oldPos->mMaxHeight != pos->mMaxHeight || |
| 1424 | oldDisp->mPosition != disp->mPosition || |
| 1425 | oldDisp->mTransform != disp->mTransform)) { |
| 1426 | needScrollAnchorSuppression = true; |
| 1427 | } |
| 1428 | |
| 1429 | if (needScrollAnchorSuppression && |
| 1430 | StaticPrefs::layout_css_scroll_anchoring_suppressions_enabled()) { |
| 1431 | ScrollAnchorContainer::FindFor(this)->SuppressAdjustments(); |
| 1432 | } |
| 1433 | } |
| 1434 | |
| 1435 | if (disp->mPosition != oldDisp->mPosition) { |
| 1436 | if (!disp->IsRelativelyOrStickyPositionedStyle() && |
| 1437 | oldDisp->IsRelativelyOrStickyPositionedStyle()) { |
| 1438 | RemoveProperty(NormalPositionProperty()); |
| 1439 | } |
| 1440 | } |
| 1441 | if (disp->mScrollSnapAlign != oldDisp->mScrollSnapAlign) { |
| 1442 | ScrollSnapUtils::PostPendingResnapFor(this); |
| 1443 | } |
| 1444 | if (isRootElementStyle && |
| 1445 | disp->mScrollSnapType != oldDisp->mScrollSnapType) { |
| 1446 | if (ScrollContainerFrame* sf = |
| 1447 | PresShell()->GetRootScrollContainerFrame()) { |
| 1448 | sf->PostPendingResnap(); |
| 1449 | } |
| 1450 | } |
| 1451 | if (StyleUIReset()->mMozSubtreeHiddenOnlyVisually && |
| 1452 | !aOldComputedStyle->StyleUIReset()->mMozSubtreeHiddenOnlyVisually) { |
| 1453 | PresShell::ClearMouseCapture(this); |
| 1454 | } |
| 1455 | } |
| 1456 | |
| 1457 | imgIRequest* oldBorderImage = |
| 1458 | aOldComputedStyle |
| 1459 | ? aOldComputedStyle->StyleBorder()->GetBorderImageRequest() |
| 1460 | : nullptr; |
| 1461 | imgIRequest* newBorderImage = StyleBorder()->GetBorderImageRequest(); |
| 1462 | // FIXME (Bug 759996): The following is no longer true. |
| 1463 | // For border-images, we can't be as conservative (we need to set the |
| 1464 | // new loaders if there has been any change) since the CalcDifference |
| 1465 | // call depended on the result of GetComputedBorder() and that result |
| 1466 | // depends on whether the image has loaded, start the image load now |
| 1467 | // so that we'll get notified when it completes loading and can do a |
| 1468 | // restyle. Otherwise, the image might finish loading from the |
| 1469 | // network before we start listening to its notifications, and then |
| 1470 | // we'll never know that it's finished loading. Likewise, we want to |
| 1471 | // do this for freshly-created frames to prevent a similar race if the |
| 1472 | // image loads between reflow (which can depend on whether the image |
| 1473 | // is loaded) and paint. We also don't really care about any callers who try |
| 1474 | // to paint borders with a different style, because they won't have the |
| 1475 | // correct size for the border either. |
| 1476 | if (oldBorderImage != newBorderImage) { |
| 1477 | // stop and restart the image loading/notification |
| 1478 | if (oldBorderImage && HasImageRequest()) { |
| 1479 | loader.DisassociateRequestFromFrame(oldBorderImage, this); |
| 1480 | } |
| 1481 | if (newBorderImage) { |
| 1482 | loader.AssociateRequestToFrame(newBorderImage, this); |
| 1483 | } |
| 1484 | } |
| 1485 | |
| 1486 | auto GetShapeImageRequest = [](const ComputedStyle* aStyle) -> imgIRequest* { |
| 1487 | if (!aStyle) { |
| 1488 | return nullptr; |
| 1489 | } |
| 1490 | auto& shape = aStyle->StyleDisplay()->mShapeOutside; |
| 1491 | if (!shape.IsImage()) { |
| 1492 | return nullptr; |
| 1493 | } |
| 1494 | return shape.AsImage().GetImageRequest(); |
| 1495 | }; |
| 1496 | |
| 1497 | imgIRequest* oldShapeImage = GetShapeImageRequest(aOldComputedStyle); |
| 1498 | imgIRequest* newShapeImage = GetShapeImageRequest(Style()); |
| 1499 | if (oldShapeImage != newShapeImage) { |
| 1500 | if (oldShapeImage && HasImageRequest()) { |
| 1501 | loader.DisassociateRequestFromFrame(oldShapeImage, this); |
| 1502 | } |
| 1503 | if (newShapeImage) { |
| 1504 | loader.AssociateRequestToFrame( |
| 1505 | newShapeImage, this, |
| 1506 | ImageLoader::Flags:: |
| 1507 | RequiresReflowOnFirstFrameCompleteAndLoadEventBlocking); |
| 1508 | } |
| 1509 | } |
| 1510 | |
| 1511 | // SVGObserverUtils::GetEffectProperties() asserts that we only invoke it with |
| 1512 | // the first continuation so we need to check that in advance. |
| 1513 | const bool isNonTextFirstContinuation = isNonText && !GetPrevContinuation(); |
| 1514 | if (isNonTextFirstContinuation) { |
| 1515 | // Kick off loading of external SVG resources referenced from properties if |
| 1516 | // any. This currently includes filter, clip-path, and mask. |
| 1517 | SVGObserverUtils::InitiateResourceDocLoads(this); |
| 1518 | } |
| 1519 | |
| 1520 | // If the page contains markup that overrides text direction, and |
| 1521 | // does not contain any characters that would activate the Unicode |
| 1522 | // bidi algorithm, we need to call |SetBidiEnabled| on the pres |
| 1523 | // context before reflow starts. See bug 115921. |
| 1524 | if (StyleVisibility()->mDirection == StyleDirection::Rtl) { |
| 1525 | PresContext()->SetBidiEnabled(); |
| 1526 | } |
| 1527 | |
| 1528 | // The following part is for caching offset-path:path(). We cache the |
| 1529 | // flatten gfx path, so we don't have to rebuild and re-flattern it at |
| 1530 | // each cycle if we have animations on offset-* with a fixed offset-path. |
| 1531 | const StyleOffsetPath* oldPath = |
| 1532 | aOldComputedStyle ? &aOldComputedStyle->StyleDisplay()->mOffsetPath |
| 1533 | : nullptr; |
| 1534 | const StyleOffsetPath& newPath = StyleDisplay()->mOffsetPath; |
| 1535 | if (!oldPath || *oldPath != newPath) { |
| 1536 | // FIXME: Bug 1837042. Cache all basic shapes. |
| 1537 | if (newPath.IsPath()) { |
| 1538 | RefPtr<gfx::PathBuilder> builder = MotionPathUtils::GetPathBuilder(); |
| 1539 | RefPtr<gfx::Path> path = |
| 1540 | MotionPathUtils::BuildSVGPath(newPath.AsSVGPathData(), builder); |
| 1541 | if (path) { |
| 1542 | // The newPath could be path('') (i.e. empty path), so its gfx path |
| 1543 | // could be nullptr, and so we only set property for a non-empty path. |
| 1544 | SetProperty(nsIFrame::OffsetPathCache(), path.forget().take()); |
| 1545 | } else { |
| 1546 | // May have an old cached path, so we have to delete it. |
| 1547 | RemoveProperty(nsIFrame::OffsetPathCache()); |
| 1548 | } |
| 1549 | } else if (oldPath) { |
| 1550 | RemoveProperty(nsIFrame::OffsetPathCache()); |
| 1551 | } |
| 1552 | } |
| 1553 | |
| 1554 | if (IsPrimaryFrame()) { |
| 1555 | MOZ_ASSERT(aOldComputedStyle)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aOldComputedStyle)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aOldComputedStyle))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aOldComputedStyle" , "./../../../layout/generic/nsIFrame.cpp", 1555); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aOldComputedStyle" ")"); do { MOZ_CrashSequence (__null, 1555); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1556 | HandlePrimaryFrameStyleChange(aOldComputedStyle); |
| 1557 | } |
| 1558 | |
| 1559 | RemoveStateBits(NS_FRAME_SIMPLE_DISPLAYLIST); |
| 1560 | |
| 1561 | mMayHaveRoundedCorners = true; |
| 1562 | } |
| 1563 | |
| 1564 | void nsIFrame::HandleLastRememberedSize() { |
| 1565 | MOZ_ASSERT(IsPrimaryFrame())do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsPrimaryFrame())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(IsPrimaryFrame()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsPrimaryFrame()" , "./../../../layout/generic/nsIFrame.cpp", 1565); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "IsPrimaryFrame()" ")"); do { MOZ_CrashSequence (__null, 1565); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1566 | auto* element = Element::FromNodeOrNull(mContent); |
| 1567 | if (!element) { |
| 1568 | return; |
| 1569 | } |
| 1570 | const WritingMode wm = GetWritingMode(); |
| 1571 | const nsStylePosition* stylePos = StylePosition(); |
| 1572 | bool canRememberBSize = stylePos->ContainIntrinsicBSize(wm).HasAuto(); |
| 1573 | bool canRememberISize = stylePos->ContainIntrinsicISize(wm).HasAuto(); |
| 1574 | if (!canRememberBSize) { |
| 1575 | element->RemoveLastRememberedBSize(); |
| 1576 | } |
| 1577 | if (!canRememberISize) { |
| 1578 | element->RemoveLastRememberedISize(); |
| 1579 | } |
| 1580 | if ((canRememberBSize || canRememberISize) && !HidesContent()) { |
| 1581 | bool isNonReplacedInline = IsLineParticipant() && !IsReplaced(); |
| 1582 | if (!isNonReplacedInline) { |
| 1583 | PresContext()->Document()->ObserveForLastRememberedSize(*element); |
| 1584 | return; |
| 1585 | } |
| 1586 | } |
| 1587 | PresContext()->Document()->UnobserveForLastRememberedSize(*element); |
| 1588 | } |
| 1589 | |
| 1590 | #ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED1 |
| 1591 | void nsIFrame::AssertNewStyleIsSane(ComputedStyle& aNewStyle) { |
| 1592 | MOZ_DIAGNOSTIC_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1593 | aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1594 | // ::first-line continuations are weird, this should probably be fixed viado { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1595 | // bug 1465474.do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1596 | (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine &&do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1597 | aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1598 | // ::first-letter continuations are broken, in particular floating ones,do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1599 | // see bug 1490281. The construction code tries to fix this up after thedo { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1600 | // fact, then restyling undoes it...do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1601 | (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText &&do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1602 | aNewStyle.GetPseudoType() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1603 | PseudoStyleType::MozFirstLetterContinuation) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1604 | (mComputedStyle->GetPseudoType() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1605 | PseudoStyleType::MozFirstLetterContinuation &&do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1606 | aNewStyle.GetPseudoType() == PseudoStyleType::MozText))do { static_assert( mozilla::detail::AssertionConditionType< decltype(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType () || (mComputedStyle->GetPseudoType() == PseudoStyleType:: FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType ::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType ::MozText && aNewStyle.GetPseudoType() == PseudoStyleType ::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation && aNewStyle .GetPseudoType() == PseudoStyleType::MozText))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType () == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType () == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType () == PseudoStyleType::MozText && aNewStyle.GetPseudoType () == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle ->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" , "./../../../layout/generic/nsIFrame.cpp", 1606); AnnotateMozCrashReason ("MOZ_DIAGNOSTIC_ASSERT" "(" "aNewStyle.GetPseudoType() == mComputedStyle->GetPseudoType() || (mComputedStyle->GetPseudoType() == PseudoStyleType::FirstLine && aNewStyle.GetPseudoType() == PseudoStyleType::MozLineFrame) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozText && aNewStyle.GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation) || (mComputedStyle->GetPseudoType() == PseudoStyleType::MozFirstLetterContinuation && aNewStyle.GetPseudoType() == PseudoStyleType::MozText)" ")"); do { MOZ_CrashSequence(__null, 1606); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1607 | } |
| 1608 | #endif |
| 1609 | |
| 1610 | /* virtual */ |
| 1611 | nsMargin nsIFrame::GetUsedMargin() const { |
| 1612 | nsMargin margin; |
| 1613 | if (((mState & NS_FRAME_FIRST_REFLOW) && !(mState & NS_FRAME_IN_REFLOW)) || |
| 1614 | IsInSVGTextSubtree()) { |
| 1615 | return margin; |
| 1616 | } |
| 1617 | |
| 1618 | if (nsMargin* m = GetProperty(UsedMarginProperty())) { |
| 1619 | margin = *m; |
| 1620 | } else if (!StyleMargin()->GetMargin(margin)) { |
| 1621 | // If we get here, our caller probably shouldn't be calling us... |
| 1622 | NS_ERROR(do { NS_DebugBreak(NS_DEBUG_ASSERTION, "Returning bogus 0-sized margin, because this margin " "depends on layout & isn't cached!", "Error", "./../../../layout/generic/nsIFrame.cpp" , 1624); MOZ_PretendNoReturn(); } while (0) |
| 1623 | "Returning bogus 0-sized margin, because this margin "do { NS_DebugBreak(NS_DEBUG_ASSERTION, "Returning bogus 0-sized margin, because this margin " "depends on layout & isn't cached!", "Error", "./../../../layout/generic/nsIFrame.cpp" , 1624); MOZ_PretendNoReturn(); } while (0) |
| 1624 | "depends on layout & isn't cached!")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "Returning bogus 0-sized margin, because this margin " "depends on layout & isn't cached!", "Error", "./../../../layout/generic/nsIFrame.cpp" , 1624); MOZ_PretendNoReturn(); } while (0); |
| 1625 | } |
| 1626 | return margin; |
| 1627 | } |
| 1628 | |
| 1629 | /* virtual */ |
| 1630 | nsMargin nsIFrame::GetUsedBorder() const { |
| 1631 | if (((mState & NS_FRAME_FIRST_REFLOW) && !(mState & NS_FRAME_IN_REFLOW)) || |
| 1632 | IsInSVGTextSubtree()) { |
| 1633 | return {}; |
| 1634 | } |
| 1635 | |
| 1636 | const nsStyleDisplay* disp = StyleDisplay(); |
| 1637 | if (IsThemed(disp)) { |
| 1638 | // Theme methods don't use const-ness. |
| 1639 | auto* mutable_this = const_cast<nsIFrame*>(this); |
| 1640 | nsPresContext* pc = PresContext(); |
| 1641 | LayoutDeviceIntMargin widgetBorder = pc->Theme()->GetWidgetBorder( |
| 1642 | pc->DeviceContext(), mutable_this, disp->EffectiveAppearance()); |
| 1643 | return LayoutDevicePixel::ToAppUnits(widgetBorder, |
| 1644 | pc->AppUnitsPerDevPixel()); |
| 1645 | } |
| 1646 | |
| 1647 | return StyleBorder()->GetComputedBorder(); |
| 1648 | } |
| 1649 | |
| 1650 | /* virtual */ |
| 1651 | nsMargin nsIFrame::GetUsedPadding() const { |
| 1652 | nsMargin padding; |
| 1653 | if (((mState & NS_FRAME_FIRST_REFLOW) && !(mState & NS_FRAME_IN_REFLOW)) || |
| 1654 | IsInSVGTextSubtree()) { |
| 1655 | return padding; |
| 1656 | } |
| 1657 | |
| 1658 | const nsStyleDisplay* disp = StyleDisplay(); |
| 1659 | if (IsThemed(disp)) { |
| 1660 | // Theme methods don't use const-ness. |
| 1661 | nsIFrame* mutable_this = const_cast<nsIFrame*>(this); |
| 1662 | nsPresContext* pc = PresContext(); |
| 1663 | LayoutDeviceIntMargin widgetPadding; |
| 1664 | if (pc->Theme()->GetWidgetPadding(pc->DeviceContext(), mutable_this, |
| 1665 | disp->EffectiveAppearance(), |
| 1666 | &widgetPadding)) { |
| 1667 | return LayoutDevicePixel::ToAppUnits(widgetPadding, |
| 1668 | pc->AppUnitsPerDevPixel()); |
| 1669 | } |
| 1670 | } |
| 1671 | |
| 1672 | if (nsMargin* p = GetProperty(UsedPaddingProperty())) { |
| 1673 | padding = *p; |
| 1674 | } else if (!StylePadding()->GetPadding(padding)) { |
| 1675 | // If we get here, our caller probably shouldn't be calling us... |
| 1676 | NS_ERROR(do { NS_DebugBreak(NS_DEBUG_ASSERTION, "Returning bogus 0-sized padding, because this padding " "depends on layout & isn't cached!", "Error", "./../../../layout/generic/nsIFrame.cpp" , 1678); MOZ_PretendNoReturn(); } while (0) |
| 1677 | "Returning bogus 0-sized padding, because this padding "do { NS_DebugBreak(NS_DEBUG_ASSERTION, "Returning bogus 0-sized padding, because this padding " "depends on layout & isn't cached!", "Error", "./../../../layout/generic/nsIFrame.cpp" , 1678); MOZ_PretendNoReturn(); } while (0) |
| 1678 | "depends on layout & isn't cached!")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "Returning bogus 0-sized padding, because this padding " "depends on layout & isn't cached!", "Error", "./../../../layout/generic/nsIFrame.cpp" , 1678); MOZ_PretendNoReturn(); } while (0); |
| 1679 | } |
| 1680 | return padding; |
| 1681 | } |
| 1682 | |
| 1683 | nsIFrame::Sides nsIFrame::GetSkipSides() const { |
| 1684 | if (MOZ_UNLIKELY(StyleBorder()->mBoxDecorationBreak ==(__builtin_expect(!!(StyleBorder()->mBoxDecorationBreak == StyleBoxDecorationBreak::Clone), 0)) |
| 1685 | StyleBoxDecorationBreak::Clone)(__builtin_expect(!!(StyleBorder()->mBoxDecorationBreak == StyleBoxDecorationBreak::Clone), 0)) && |
| 1686 | !HasAnyStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER)) { |
| 1687 | return Sides(); |
| 1688 | } |
| 1689 | |
| 1690 | // Convert the logical skip sides to physical sides using the frame's |
| 1691 | // writing mode |
| 1692 | WritingMode writingMode = GetWritingMode(); |
| 1693 | LogicalSides logicalSkip = GetLogicalSkipSides(); |
| 1694 | Sides skip; |
| 1695 | |
| 1696 | if (logicalSkip.BStart()) { |
| 1697 | if (writingMode.IsVertical()) { |
| 1698 | skip |= writingMode.IsVerticalLR() ? SideBits::eLeft : SideBits::eRight; |
| 1699 | } else { |
| 1700 | skip |= SideBits::eTop; |
| 1701 | } |
| 1702 | } |
| 1703 | |
| 1704 | if (logicalSkip.BEnd()) { |
| 1705 | if (writingMode.IsVertical()) { |
| 1706 | skip |= writingMode.IsVerticalLR() ? SideBits::eRight : SideBits::eLeft; |
| 1707 | } else { |
| 1708 | skip |= SideBits::eBottom; |
| 1709 | } |
| 1710 | } |
| 1711 | |
| 1712 | if (logicalSkip.IStart()) { |
| 1713 | if (writingMode.IsVertical()) { |
| 1714 | skip |= |
| 1715 | writingMode.IsInlineReversed() ? SideBits::eBottom : SideBits::eTop; |
| 1716 | } else { |
| 1717 | skip |= writingMode.IsBidiLTR() ? SideBits::eLeft : SideBits::eRight; |
| 1718 | } |
| 1719 | } |
| 1720 | |
| 1721 | if (logicalSkip.IEnd()) { |
| 1722 | if (writingMode.IsVertical()) { |
| 1723 | skip |= |
| 1724 | writingMode.IsInlineReversed() ? SideBits::eTop : SideBits::eBottom; |
| 1725 | } else { |
| 1726 | skip |= writingMode.IsBidiLTR() ? SideBits::eRight : SideBits::eLeft; |
| 1727 | } |
| 1728 | } |
| 1729 | return skip; |
| 1730 | } |
| 1731 | |
| 1732 | nsRect nsIFrame::GetPaddingRectRelativeToSelf() const { |
| 1733 | nsMargin border = GetUsedBorder().ApplySkipSides(GetSkipSides()); |
| 1734 | nsRect r(0, 0, mRect.width, mRect.height); |
| 1735 | r.Deflate(border); |
| 1736 | return r; |
| 1737 | } |
| 1738 | |
| 1739 | nsRect nsIFrame::GetPaddingRect() const { |
| 1740 | return GetPaddingRectRelativeToSelf() + GetPosition(); |
| 1741 | } |
| 1742 | |
| 1743 | WritingMode nsIFrame::WritingModeForLine(WritingMode aSelfWM, |
| 1744 | nsIFrame* aSubFrame) const { |
| 1745 | MOZ_ASSERT(aSelfWM == GetWritingMode())do { static_assert( mozilla::detail::AssertionConditionType< decltype(aSelfWM == GetWritingMode())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aSelfWM == GetWritingMode()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aSelfWM == GetWritingMode()" , "./../../../layout/generic/nsIFrame.cpp", 1745); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aSelfWM == GetWritingMode()" ")"); do { MOZ_CrashSequence (__null, 1745); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1746 | WritingMode writingMode = aSelfWM; |
| 1747 | |
| 1748 | if (StyleTextReset()->mUnicodeBidi == StyleUnicodeBidi::Plaintext) { |
| 1749 | mozilla::intl::BidiEmbeddingLevel frameLevel = |
| 1750 | nsBidiPresUtils::GetFrameBaseLevel(aSubFrame); |
| 1751 | writingMode.SetDirectionFromBidiLevel(frameLevel); |
| 1752 | } |
| 1753 | |
| 1754 | return writingMode; |
| 1755 | } |
| 1756 | |
| 1757 | nsRect nsIFrame::GetMarginRect() const { |
| 1758 | return GetMarginRectRelativeToSelf() + GetPosition(); |
| 1759 | } |
| 1760 | |
| 1761 | nsRect nsIFrame::GetMarginRectRelativeToSelf() const { |
| 1762 | nsMargin m = GetUsedMargin().ApplySkipSides(GetSkipSides()); |
| 1763 | nsRect r(0, 0, mRect.width, mRect.height); |
| 1764 | r.Inflate(m); |
| 1765 | return r; |
| 1766 | } |
| 1767 | |
| 1768 | bool nsIFrame::IsTransformed() const { |
| 1769 | if (!HasAnyStateBits(NS_FRAME_MAY_BE_TRANSFORMED)) { |
| 1770 | MOZ_ASSERT(!IsCSSTransformed())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!IsCSSTransformed())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!IsCSSTransformed()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!IsCSSTransformed()" , "./../../../layout/generic/nsIFrame.cpp", 1770); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!IsCSSTransformed()" ")"); do { MOZ_CrashSequence (__null, 1770); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1771 | MOZ_ASSERT(!GetParentSVGTransforms())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!GetParentSVGTransforms())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!GetParentSVGTransforms()))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("!GetParentSVGTransforms()" , "./../../../layout/generic/nsIFrame.cpp", 1771); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!GetParentSVGTransforms()" ")"); do { MOZ_CrashSequence (__null, 1771); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1772 | return false; |
| 1773 | } |
| 1774 | return IsCSSTransformed() || GetParentSVGTransforms(); |
| 1775 | } |
| 1776 | |
| 1777 | bool nsIFrame::IsCSSTransformed() const { |
| 1778 | return HasAnyStateBits(NS_FRAME_MAY_BE_TRANSFORMED) && |
| 1779 | (StyleDisplay()->HasTransform(this) || HasAnimationOfTransform()); |
| 1780 | } |
| 1781 | |
| 1782 | bool nsIFrame::HasAnimationOfTransform() const { |
| 1783 | if (!MayHaveTransformAnimation()) { |
| 1784 | MOZ_ASSERT(!IsPrimaryFrame() || !SupportsCSSTransforms() ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(!IsPrimaryFrame() || !SupportsCSSTransforms() || !nsLayoutUtils ::HasAnimationOfTransformAndMotionPath(this))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!IsPrimaryFrame() || !SupportsCSSTransforms () || !nsLayoutUtils::HasAnimationOfTransformAndMotionPath(this )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!IsPrimaryFrame() || !SupportsCSSTransforms() || !nsLayoutUtils::HasAnimationOfTransformAndMotionPath(this)" , "./../../../layout/generic/nsIFrame.cpp", 1785); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!IsPrimaryFrame() || !SupportsCSSTransforms() || !nsLayoutUtils::HasAnimationOfTransformAndMotionPath(this)" ")"); do { MOZ_CrashSequence(__null, 1785); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1785 | !nsLayoutUtils::HasAnimationOfTransformAndMotionPath(this))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!IsPrimaryFrame() || !SupportsCSSTransforms() || !nsLayoutUtils ::HasAnimationOfTransformAndMotionPath(this))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!IsPrimaryFrame() || !SupportsCSSTransforms () || !nsLayoutUtils::HasAnimationOfTransformAndMotionPath(this )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!IsPrimaryFrame() || !SupportsCSSTransforms() || !nsLayoutUtils::HasAnimationOfTransformAndMotionPath(this)" , "./../../../layout/generic/nsIFrame.cpp", 1785); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!IsPrimaryFrame() || !SupportsCSSTransforms() || !nsLayoutUtils::HasAnimationOfTransformAndMotionPath(this)" ")"); do { MOZ_CrashSequence(__null, 1785); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1786 | return false; |
| 1787 | } |
| 1788 | return IsPrimaryFrame() && SupportsCSSTransforms() && |
| 1789 | nsLayoutUtils::HasAnimationOfTransformAndMotionPath(this); |
| 1790 | } |
| 1791 | |
| 1792 | bool nsIFrame::ChildrenHavePerspective( |
| 1793 | const nsStyleDisplay* aStyleDisplay) const { |
| 1794 | MOZ_ASSERT(aStyleDisplay == StyleDisplay())do { static_assert( mozilla::detail::AssertionConditionType< decltype(aStyleDisplay == StyleDisplay())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aStyleDisplay == StyleDisplay ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aStyleDisplay == StyleDisplay()", "./../../../layout/generic/nsIFrame.cpp" , 1794); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aStyleDisplay == StyleDisplay()" ")"); do { MOZ_CrashSequence(__null, 1794); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1795 | return aStyleDisplay->HasPerspective(this); |
| 1796 | } |
| 1797 | |
| 1798 | bool nsIFrame::HasAnimationOfOpacity(EffectSet* aEffectSet) const { |
| 1799 | return ((nsLayoutUtils::IsPrimaryStyleFrame(this) || |
| 1800 | nsLayoutUtils::FirstContinuationOrIBSplitSibling(this) |
| 1801 | ->IsPrimaryFrame()) && |
| 1802 | nsLayoutUtils::HasAnimationOfPropertySet( |
| 1803 | this, nsCSSPropertyIDSet::OpacityProperties(), aEffectSet)); |
| 1804 | } |
| 1805 | |
| 1806 | bool nsIFrame::HasOpacityInternal(float aThreshold, |
| 1807 | const nsStyleDisplay* aStyleDisplay, |
| 1808 | const nsStyleEffects* aStyleEffects, |
| 1809 | EffectSet* aEffectSet) const { |
| 1810 | MOZ_ASSERT(0.0 <= aThreshold && aThreshold <= 1.0, "Invalid argument")do { static_assert( mozilla::detail::AssertionConditionType< decltype(0.0 <= aThreshold && aThreshold <= 1.0 )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(0.0 <= aThreshold && aThreshold <= 1.0 ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "0.0 <= aThreshold && aThreshold <= 1.0" " (" "Invalid argument" ")", "./../../../layout/generic/nsIFrame.cpp", 1810); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "0.0 <= aThreshold && aThreshold <= 1.0" ") (" "Invalid argument" ")"); do { MOZ_CrashSequence(__null , 1810); __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 1811 | if (aStyleEffects->mOpacity < aThreshold || |
| 1812 | aStyleDisplay->mWillChange.bits & StyleWillChangeBits::OPACITY) { |
| 1813 | return true; |
| 1814 | } |
| 1815 | |
| 1816 | if (!mMayHaveOpacityAnimation) { |
| 1817 | return false; |
| 1818 | } |
| 1819 | |
| 1820 | return HasAnimationOfOpacity(aEffectSet); |
| 1821 | } |
| 1822 | |
| 1823 | bool nsIFrame::DoGetParentSVGTransforms(gfx::Matrix*) const { return false; } |
| 1824 | |
| 1825 | bool nsIFrame::Extend3DContext(const nsStyleDisplay* aStyleDisplay, |
| 1826 | const nsStyleEffects* aStyleEffects, |
| 1827 | mozilla::EffectSet* aEffectSetForOpacity) const { |
| 1828 | if (!HasAnyStateBits(NS_FRAME_MAY_BE_TRANSFORMED)) { |
| 1829 | return false; |
| 1830 | } |
| 1831 | const nsStyleDisplay* disp = StyleDisplayWithOptionalParam(aStyleDisplay); |
| 1832 | if (disp->mTransformStyle != StyleTransformStyle::Preserve3d || |
| 1833 | !SupportsCSSTransforms()) { |
| 1834 | return false; |
| 1835 | } |
| 1836 | |
| 1837 | // If we're all scroll frame, then all descendants will be clipped, so we |
| 1838 | // can't preserve 3d. |
| 1839 | if (IsScrollContainerFrame()) { |
| 1840 | return false; |
| 1841 | } |
| 1842 | |
| 1843 | const nsStyleEffects* effects = StyleEffectsWithOptionalParam(aStyleEffects); |
| 1844 | if (HasOpacity(disp, effects, aEffectSetForOpacity)) { |
| 1845 | return false; |
| 1846 | } |
| 1847 | |
| 1848 | return ShouldApplyOverflowClipping(disp).isEmpty() && |
| 1849 | !GetClipPropClipRect(disp, effects, GetSize()) && |
| 1850 | !SVGIntegrationUtils::UsingEffectsForFrame(this) && |
| 1851 | !effects->HasMixBlendMode() && |
| 1852 | !ForcesStackingContextForViewTransition() && |
| 1853 | disp->mIsolation != StyleIsolation::Isolate; |
| 1854 | } |
| 1855 | |
| 1856 | bool nsIFrame::Combines3DTransformWithAncestors() const { |
| 1857 | // Check these first as they are faster then both calls below and are we are |
| 1858 | // likely to hit the early return (backface hidden is uncommon and |
| 1859 | // GetReferenceFrame is a hot caller of this which only calls this if |
| 1860 | // IsCSSTransformed is false). |
| 1861 | if (!IsCSSTransformed() && !BackfaceIsHidden()) { |
| 1862 | return false; |
| 1863 | } |
| 1864 | nsIFrame* parent = GetClosestFlattenedTreeAncestorPrimaryFrame(); |
| 1865 | return parent && parent->Extend3DContext(); |
| 1866 | } |
| 1867 | |
| 1868 | bool nsIFrame::In3DContextAndBackfaceIsHidden() const { |
| 1869 | // While both tests fail most of the time, test BackfaceIsHidden() |
| 1870 | // first since it's likely to fail faster. |
| 1871 | return BackfaceIsHidden() && Combines3DTransformWithAncestors(); |
| 1872 | } |
| 1873 | |
| 1874 | bool nsIFrame::HasPerspective() const { |
| 1875 | if (!IsCSSTransformed()) { |
| 1876 | return false; |
| 1877 | } |
| 1878 | nsIFrame* parent = GetClosestFlattenedTreeAncestorPrimaryFrame(); |
| 1879 | if (!parent) { |
| 1880 | return false; |
| 1881 | } |
| 1882 | return parent->ChildrenHavePerspective(); |
| 1883 | } |
| 1884 | |
| 1885 | nsRect nsIFrame::GetContentRectRelativeToSelf() const { |
| 1886 | nsMargin bp = GetUsedBorderAndPadding().ApplySkipSides(GetSkipSides()); |
| 1887 | nsRect r(0, 0, mRect.width, mRect.height); |
| 1888 | r.Deflate(bp); |
| 1889 | return r; |
| 1890 | } |
| 1891 | |
| 1892 | nsRect nsIFrame::GetContentRect() const { |
| 1893 | return GetContentRectRelativeToSelf() + GetPosition(); |
| 1894 | } |
| 1895 | |
| 1896 | bool nsIFrame::ComputeBorderRadii(const BorderRadius& aBorderRadius, |
| 1897 | const CornerShapeRect& aCornerShape, |
| 1898 | const nsSize& aFrameSize, |
| 1899 | const nsSize& aBorderArea, Sides aSkipSides, |
| 1900 | nsRectCornerRadii& aRadii) { |
| 1901 | // Percentages are relative to whichever side they're on. |
| 1902 | for (const auto i : mozilla::AllPhysicalHalfCorners()) { |
| 1903 | const LengthPercentage& c = aBorderRadius.Get(i); |
| 1904 | nscoord axis = HalfCornerIsX(i) ? aFrameSize.width : aFrameSize.height; |
| 1905 | aRadii[i] = std::max(0, c.Resolve(axis)); |
| 1906 | } |
| 1907 | |
| 1908 | aRadii.mShapeK[mozilla::eCornerTopLeft] = aCornerShape.top_left.k; |
| 1909 | aRadii.mShapeK[mozilla::eCornerTopRight] = aCornerShape.top_right.k; |
| 1910 | aRadii.mShapeK[mozilla::eCornerBottomLeft] = aCornerShape.bottom_left.k; |
| 1911 | aRadii.mShapeK[mozilla::eCornerBottomRight] = aCornerShape.bottom_right.k; |
| 1912 | |
| 1913 | bool isTopLeftSquare = |
| 1914 | std::isinf(aCornerShape.top_left.k) && (aCornerShape.top_left.k > 0.0f); |
| 1915 | bool isTopRightSquare = |
| 1916 | std::isinf(aCornerShape.top_right.k) && (aCornerShape.top_right.k > 0.0f); |
| 1917 | bool isBottomLeftSquare = std::isinf(aCornerShape.bottom_left.k) && |
| 1918 | (aCornerShape.bottom_left.k > 0.0f); |
| 1919 | bool isBottomRightSquare = std::isinf(aCornerShape.bottom_right.k) && |
| 1920 | (aCornerShape.bottom_right.k > 0.0f); |
| 1921 | |
| 1922 | if (aSkipSides.Intersects(SideBits::eTop | SideBits::eLeft) || |
| 1923 | isTopLeftSquare) { |
| 1924 | aRadii.TopLeft() = {}; |
| 1925 | } |
| 1926 | if (aSkipSides.Intersects(SideBits::eTop | SideBits::eRight) || |
| 1927 | isTopRightSquare) { |
| 1928 | aRadii.TopRight() = {}; |
| 1929 | } |
| 1930 | if (aSkipSides.Intersects(SideBits::eBottom | SideBits::eLeft) || |
| 1931 | isBottomLeftSquare) { |
| 1932 | aRadii.BottomLeft() = {}; |
| 1933 | } |
| 1934 | if (aSkipSides.Intersects(SideBits::eBottom | SideBits::eRight) || |
| 1935 | isBottomRightSquare) { |
| 1936 | aRadii.BottomRight() = {}; |
| 1937 | } |
| 1938 | |
| 1939 | // css3-background specifies this algorithm for reducing |
| 1940 | // corner radii when they are too big. |
| 1941 | bool haveRadius = false; |
| 1942 | double ratio = 1.0f; |
| 1943 | for (const auto side : mozilla::AllPhysicalSides()) { |
| 1944 | auto hc1 = SideToHalfCorner(side, false, true); |
| 1945 | auto hc2 = SideToHalfCorner(side, true, true); |
| 1946 | nscoord length = |
| 1947 | SideIsVertical(side) ? aBorderArea.height : aBorderArea.width; |
| 1948 | nscoord sum = aRadii[hc1] + aRadii[hc2]; |
| 1949 | if (sum) { |
| 1950 | haveRadius = true; |
| 1951 | // avoid floating point division in the normal case |
| 1952 | if (length < sum) { |
| 1953 | ratio = std::min(ratio, double(length) / sum); |
| 1954 | } |
| 1955 | } |
| 1956 | } |
| 1957 | if (ratio < 1.0) { |
| 1958 | for (const auto corner : mozilla::AllPhysicalHalfCorners()) { |
| 1959 | aRadii[corner] *= ratio; |
| 1960 | } |
| 1961 | } |
| 1962 | |
| 1963 | return haveRadius; |
| 1964 | } |
| 1965 | |
| 1966 | static inline bool RadiiAreDefinitelyZero(const BorderRadius& aBorderRadius) { |
| 1967 | for (const auto corner : mozilla::AllPhysicalHalfCorners()) { |
| 1968 | if (!aBorderRadius.Get(corner).IsDefinitelyZero()) { |
| 1969 | return false; |
| 1970 | } |
| 1971 | } |
| 1972 | return true; |
| 1973 | } |
| 1974 | |
| 1975 | /* virtual */ |
| 1976 | bool nsIFrame::GetBorderRadii(const nsSize& aFrameSize, |
| 1977 | const nsSize& aBorderArea, Sides aSkipSides, |
| 1978 | nsRectCornerRadii& aRadii) const { |
| 1979 | if (!mMayHaveRoundedCorners) { |
| 1980 | return false; |
| 1981 | } |
| 1982 | |
| 1983 | if (IsThemed()) { |
| 1984 | // When we're themed, the native theme code draws the border and |
| 1985 | // background, and therefore it doesn't make sense to tell other |
| 1986 | // code that's interested in border-radius that we have any radii. |
| 1987 | // |
| 1988 | // In an ideal world, we might have a way for the them to tell us an |
| 1989 | // border radius, but since we don't, we're better off assuming |
| 1990 | // zero. |
| 1991 | return false; |
| 1992 | } |
| 1993 | |
| 1994 | const auto& radii = StyleBorder()->mBorderRadius; |
| 1995 | const auto& cornerShape = StyleBorder()->mCornerShape; |
| 1996 | const bool hasRadii = ComputeBorderRadii(radii, cornerShape, aFrameSize, |
| 1997 | aBorderArea, aSkipSides, aRadii); |
| 1998 | if (!hasRadii) { |
| 1999 | // TODO(emilio): Maybe we can just remove this bit and do the |
| 2000 | // IsDefinitelyZero check unconditionally. That should still avoid most of |
| 2001 | // the work, though maybe not the cache miss of going through the style and |
| 2002 | // the border struct. |
| 2003 | const_cast<nsIFrame*>(this)->mMayHaveRoundedCorners = |
| 2004 | !RadiiAreDefinitelyZero(radii); |
| 2005 | } |
| 2006 | return hasRadii; |
| 2007 | } |
| 2008 | |
| 2009 | bool nsIFrame::GetBorderRadii(nsRectCornerRadii& aRadii) const { |
| 2010 | nsSize sz = GetSize(); |
| 2011 | return GetBorderRadii(sz, sz, GetSkipSides(), aRadii); |
| 2012 | } |
| 2013 | |
| 2014 | bool nsIFrame::GetMarginBoxBorderRadii(nsRectCornerRadii& aRadii) const { |
| 2015 | if (!GetBorderRadii(aRadii)) { |
| 2016 | return false; |
| 2017 | } |
| 2018 | aRadii.AdjustOutwards(GetUsedMargin()); |
| 2019 | return true; |
| 2020 | } |
| 2021 | |
| 2022 | bool nsIFrame::GetPaddingBoxBorderRadii(nsRectCornerRadii& aRadii) const { |
| 2023 | if (!GetBorderRadii(aRadii)) { |
| 2024 | return false; |
| 2025 | } |
| 2026 | aRadii.AdjustInwards(GetUsedBorder()); |
| 2027 | return true; |
| 2028 | } |
| 2029 | |
| 2030 | bool nsIFrame::GetContentBoxBorderRadii(nsRectCornerRadii& aRadii) const { |
| 2031 | if (!GetBorderRadii(aRadii)) { |
| 2032 | return false; |
| 2033 | } |
| 2034 | aRadii.AdjustInwards(GetUsedBorderAndPadding()); |
| 2035 | return true; |
| 2036 | } |
| 2037 | |
| 2038 | bool nsIFrame::GetShapeBoxBorderRadii(nsRectCornerRadii& aRadii) const { |
| 2039 | using Tag = StyleShapeOutside::Tag; |
| 2040 | auto& shapeOutside = StyleDisplay()->mShapeOutside; |
| 2041 | auto box = StyleShapeBox::MarginBox; |
| 2042 | switch (shapeOutside.tag) { |
| 2043 | case Tag::Image: |
| 2044 | case Tag::None: |
| 2045 | return false; |
| 2046 | case Tag::Box: |
| 2047 | box = shapeOutside.AsBox(); |
| 2048 | break; |
| 2049 | case Tag::Shape: |
| 2050 | box = shapeOutside.AsShape()._1; |
| 2051 | break; |
| 2052 | } |
| 2053 | |
| 2054 | switch (box) { |
| 2055 | case StyleShapeBox::ContentBox: |
| 2056 | return GetContentBoxBorderRadii(aRadii); |
| 2057 | case StyleShapeBox::PaddingBox: |
| 2058 | return GetPaddingBoxBorderRadii(aRadii); |
| 2059 | case StyleShapeBox::BorderBox: |
| 2060 | return GetBorderRadii(aRadii); |
| 2061 | case StyleShapeBox::MarginBox: |
| 2062 | return GetMarginBoxBorderRadii(aRadii); |
| 2063 | default: |
| 2064 | MOZ_ASSERT_UNREACHABLE("Unexpected box value")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Unexpected box value" ")", "./../../../layout/generic/nsIFrame.cpp" , 2064); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Unexpected box value" ")"); do { MOZ_CrashSequence(__null, 2064); __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 2065 | return false; |
| 2066 | } |
| 2067 | } |
| 2068 | |
| 2069 | nscoord nsIFrame::OneEmInAppUnits() const { |
| 2070 | return StyleFont() |
| 2071 | ->mFont.size.ScaledBy(nsLayoutUtils::FontSizeInflationFor(this)) |
| 2072 | .ToAppUnits(); |
| 2073 | } |
| 2074 | |
| 2075 | RubyMetrics nsIFrame::RubyMetrics(float aRubyMetricsFactor) const { |
| 2076 | RefPtr<nsFontMetrics> fm = |
| 2077 | nsLayoutUtils::GetInflatedFontMetricsForFrame(this); |
| 2078 | return mozilla::RubyMetrics{ |
| 2079 | nscoord(NS_round(fm->TrimmedAscent() * aRubyMetricsFactor)), |
| 2080 | nscoord(NS_round(fm->TrimmedDescent() * aRubyMetricsFactor))}; |
| 2081 | } |
| 2082 | |
| 2083 | nscoord nsIFrame::SynthesizeFallbackBaseline( |
| 2084 | WritingMode aWM, BaselineSharingGroup aBaselineGroup) const { |
| 2085 | NS_ASSERTION(!IsSubtreeDirty(), "frame must not be dirty")do { if (!(!IsSubtreeDirty())) { NS_DebugBreak(NS_DEBUG_ASSERTION , "frame must not be dirty", "!IsSubtreeDirty()", "./../../../layout/generic/nsIFrame.cpp" , 2085); MOZ_PretendNoReturn(); } } while (0); |
| 2086 | return Baseline::SynthesizeBOffsetFromMarginBox(this, aWM, aBaselineGroup); |
| 2087 | } |
| 2088 | |
| 2089 | nscoord nsIFrame::GetLogicalBaseline(WritingMode aWM) const { |
| 2090 | return GetLogicalBaseline(aWM, GetDefaultBaselineSharingGroup(), |
| 2091 | BaselineExportContext::LineLayout); |
| 2092 | } |
| 2093 | |
| 2094 | nscoord nsIFrame::GetLogicalBaseline( |
| 2095 | WritingMode aWM, BaselineSharingGroup aBaselineGroup, |
| 2096 | BaselineExportContext aExportContext) const { |
| 2097 | const auto result = |
| 2098 | GetNaturalBaselineBOffset(aWM, aBaselineGroup, aExportContext) |
| 2099 | .valueOrFrom([this, aWM, aBaselineGroup]() { |
| 2100 | return SynthesizeFallbackBaseline(aWM, aBaselineGroup); |
| 2101 | }); |
| 2102 | if (aBaselineGroup == BaselineSharingGroup::Last) { |
| 2103 | return BSize(aWM) - result; |
| 2104 | } |
| 2105 | return result; |
| 2106 | } |
| 2107 | |
| 2108 | nscoord nsIFrame::GetCaretBaseline() const { |
| 2109 | const WritingMode wm = GetWritingMode(); |
| 2110 | const BaselineSharingGroup group = GetDefaultBaselineSharingGroup(); |
| 2111 | const nscoord result = |
| 2112 | GetNaturalBaselineBOffset(wm, group, BaselineExportContext::LineLayout) |
| 2113 | .valueOrFrom([this, wm, group]() { |
| 2114 | // The synthesized caret baseline is placed at the frame's edge |
| 2115 | // at the default baseline for the writing mode. |
| 2116 | return Baseline::SynthesizeBOffsetFromMarginBox( |
| 2117 | this, wm, group, |
| 2118 | Baseline::DefaultAlignmentBaselineForWritingMode(wm)); |
| 2119 | }); |
| 2120 | if (group == BaselineSharingGroup::Last) { |
| 2121 | return BSize(wm) - result; |
| 2122 | } |
| 2123 | return result; |
| 2124 | } |
| 2125 | |
| 2126 | const nsFrameList& nsIFrame::GetChildList(ChildListID aListID) const { |
| 2127 | if (IsAbsoluteContainer()) { |
| 2128 | if (aListID == FrameChildListID::Absolute) { |
| 2129 | return GetAbsoluteContainingBlock()->GetChildList(); |
| 2130 | } |
| 2131 | if (aListID == FrameChildListID::PushedAbsolute) { |
| 2132 | return GetAbsoluteContainingBlock()->GetPushedChildList(); |
| 2133 | } |
| 2134 | } |
| 2135 | return nsFrameList::EmptyList(); |
| 2136 | } |
| 2137 | |
| 2138 | void nsIFrame::GetChildLists(nsTArray<ChildList>* aLists) const { |
| 2139 | if (const auto* absCB = GetAbsoluteContainingBlock()) { |
| 2140 | const nsFrameList& absoluteList = absCB->GetChildList(); |
| 2141 | absoluteList.AppendIfNonempty(aLists, FrameChildListID::Absolute); |
| 2142 | const nsFrameList& pushedAbsoluteList = absCB->GetPushedChildList(); |
| 2143 | pushedAbsoluteList.AppendIfNonempty(aLists, |
| 2144 | FrameChildListID::PushedAbsolute); |
| 2145 | } |
| 2146 | } |
| 2147 | |
| 2148 | AutoTArray<nsIFrame::ChildList, 4> nsIFrame::CrossDocChildLists() { |
| 2149 | AutoTArray<ChildList, 4> childLists; |
| 2150 | nsSubDocumentFrame* subdocumentFrame = do_QueryFrame(this); |
| 2151 | if (subdocumentFrame) { |
| 2152 | // Descend into the subdocument |
| 2153 | nsIFrame* root = subdocumentFrame->GetSubdocumentRootFrame(); |
| 2154 | if (root) { |
| 2155 | childLists.EmplaceBack( |
| 2156 | nsFrameList(root, nsLayoutUtils::GetLastSibling(root)), |
| 2157 | FrameChildListID::Principal); |
| 2158 | } |
| 2159 | } |
| 2160 | |
| 2161 | GetChildLists(&childLists); |
| 2162 | return childLists; |
| 2163 | } |
| 2164 | |
| 2165 | nsIFrame::CaretBlockAxisMetrics nsIFrame::GetCaretBlockAxisMetrics( |
| 2166 | mozilla::WritingMode aWM, const nsFontMetrics& aFM) const { |
| 2167 | // Note(dshin): Ultimately, this does something highly similar (But still |
| 2168 | // different) to `nsLayoutUtils::GetFirstLinePosition`. |
| 2169 | const auto baseline = GetCaretBaseline(); |
| 2170 | nscoord ascent = 0, descent = 0; |
| 2171 | ascent = aFM.MaxAscent(); |
| 2172 | descent = aFM.MaxDescent(); |
| 2173 | const nscoord height = ascent + descent; |
| 2174 | if (aWM.IsVertical() && aWM.IsLineInverted()) { |
| 2175 | return CaretBlockAxisMetrics{.mOffset = baseline - descent, |
| 2176 | .mExtent = height}; |
| 2177 | } |
| 2178 | return CaretBlockAxisMetrics{.mOffset = baseline - ascent, .mExtent = height}; |
| 2179 | } |
| 2180 | |
| 2181 | nscoord nsIFrame::GetFontMetricsDerivedCaretBaseline() const { |
| 2182 | float inflation = nsLayoutUtils::FontSizeInflationFor(this); |
| 2183 | RefPtr<nsFontMetrics> fm = |
| 2184 | nsLayoutUtils::GetFontMetricsForFrame(this, inflation); |
| 2185 | const WritingMode wm = GetWritingMode(); |
| 2186 | const nscoord lineHeight = ReflowInput::CalcLineHeight( |
| 2187 | *Style(), PresContext(), GetContent(), inflation); |
| 2188 | return nsLayoutUtils::GetCenteredFontBaseline(fm, lineHeight, |
| 2189 | wm.IsLineInverted()) + |
| 2190 | GetLogicalUsedBorderAndPadding(wm).BStart(wm); |
| 2191 | } |
| 2192 | |
| 2193 | const nsAtom* nsIFrame::ComputePageValue(const nsAtom* aAutoValue) const { |
| 2194 | const nsAtom* value = aAutoValue ? aAutoValue : nsGkAtoms::_empty; |
| 2195 | const nsIFrame* frame = this; |
| 2196 | // Find what CSS page name value this frame's subtree has, if any. |
| 2197 | // Starting with this frame, check if a page name other than auto is present, |
| 2198 | // and record it if so. Then, if the current frame is a container frame, find |
| 2199 | // the first non-placeholder child and repeat. |
| 2200 | // This will find the most deeply nested first in-flow child of this frame's |
| 2201 | // subtree, and return its page name (with auto resolved if applicable, and |
| 2202 | // subtrees with no page-names returning the empty atom rather than null). |
| 2203 | do { |
| 2204 | if (const nsAtom* maybePageName = frame->GetStylePageName()) { |
| 2205 | value = maybePageName; |
| 2206 | } |
| 2207 | // Get the next frame to read from. |
| 2208 | const nsIFrame* firstNonPlaceholderFrame = nullptr; |
| 2209 | // If this is a container frame, inspect its in-flow children. |
| 2210 | if (const nsContainerFrame* containerFrame = do_QueryFrame(frame)) { |
| 2211 | for (const nsIFrame* childFrame : containerFrame->PrincipalChildList()) { |
| 2212 | if (!childFrame->IsPlaceholderFrame()) { |
| 2213 | firstNonPlaceholderFrame = childFrame; |
| 2214 | break; |
| 2215 | } |
| 2216 | } |
| 2217 | } |
| 2218 | frame = firstNonPlaceholderFrame; |
| 2219 | } while (frame); |
| 2220 | return value; |
| 2221 | } |
| 2222 | |
| 2223 | Visibility nsIFrame::GetVisibility() const { |
| 2224 | if (!HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED)) { |
| 2225 | return Visibility::Untracked; |
| 2226 | } |
| 2227 | |
| 2228 | bool isSet = false; |
| 2229 | uint32_t visibleCount = GetProperty(VisibilityStateProperty(), &isSet); |
| 2230 | |
| 2231 | MOZ_ASSERT(isSet,do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2233); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2233); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2232 | "Should have a VisibilityStateProperty value "do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2233); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2233); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2233 | "if NS_FRAME_VISIBILITY_IS_TRACKED is set")do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2233); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2233); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2234 | |
| 2235 | return visibleCount > 0 ? Visibility::ApproximatelyVisible |
| 2236 | : Visibility::ApproximatelyNonVisible; |
| 2237 | } |
| 2238 | |
| 2239 | void nsIFrame::UpdateVisibilitySynchronously() { |
| 2240 | mozilla::PresShell* presShell = PresShell(); |
| 2241 | if (!presShell) { |
| 2242 | return; |
| 2243 | } |
| 2244 | |
| 2245 | if (presShell->AssumeAllFramesVisible()) { |
| 2246 | presShell->EnsureFrameInApproximatelyVisibleList(this); |
| 2247 | return; |
| 2248 | } |
| 2249 | |
| 2250 | bool visible = StyleVisibility()->IsVisible(); |
| 2251 | nsIFrame* f = GetParent(); |
| 2252 | nsRect rect = GetRectRelativeToSelf(); |
| 2253 | nsIFrame* rectFrame = this; |
| 2254 | while (f && visible) { |
| 2255 | if (ScrollContainerFrame* sf = do_QueryFrame(f)) { |
| 2256 | nsRect transformedRect = |
| 2257 | nsLayoutUtils::TransformFrameRectToAncestor(rectFrame, rect, f); |
| 2258 | if (!sf->IsRectNearlyVisible(transformedRect)) { |
| 2259 | visible = false; |
| 2260 | break; |
| 2261 | } |
| 2262 | |
| 2263 | // In this code we're trying to synchronously update *approximate* |
| 2264 | // visibility. (In the future we may update precise visibility here as |
| 2265 | // well, which is why the method name does not contain 'approximate'.) The |
| 2266 | // IsRectNearlyVisible() check above tells us that the rect we're checking |
| 2267 | // is approximately visible within the scrollframe, but we still need to |
| 2268 | // ensure that, even if it was scrolled into view, it'd be visible when we |
| 2269 | // consider the rest of the document. To do that, we move transformedRect |
| 2270 | // to be contained in the scrollport as best we can (it might not fit) to |
| 2271 | // pretend that it was scrolled into view. |
| 2272 | rect = transformedRect.MoveInsideAndClamp(sf->GetScrollPortRect()); |
| 2273 | rectFrame = f; |
| 2274 | } |
| 2275 | nsIFrame* parent = f->GetParent(); |
| 2276 | if (!parent) { |
| 2277 | parent = nsLayoutUtils::GetCrossDocParentFrameInProcess(f); |
| 2278 | if (parent && parent->PresContext()->IsChrome()) { |
| 2279 | break; |
| 2280 | } |
| 2281 | } |
| 2282 | f = parent; |
| 2283 | } |
| 2284 | |
| 2285 | if (visible) { |
| 2286 | presShell->EnsureFrameInApproximatelyVisibleList(this); |
| 2287 | } else { |
| 2288 | presShell->RemoveFrameFromApproximatelyVisibleList(this); |
| 2289 | } |
| 2290 | } |
| 2291 | |
| 2292 | void nsIFrame::EnableVisibilityTracking() { |
| 2293 | if (HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED)) { |
| 2294 | return; // Nothing to do. |
| 2295 | } |
| 2296 | |
| 2297 | MOZ_ASSERT(!HasProperty(VisibilityStateProperty()),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasProperty(VisibilityStateProperty()))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!HasProperty(VisibilityStateProperty())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!HasProperty(VisibilityStateProperty())" " (" "Shouldn't have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is not set" ")", "./../../../layout/generic/nsIFrame.cpp", 2299); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!HasProperty(VisibilityStateProperty())" ") (" "Shouldn't have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is not set" ")"); do { MOZ_CrashSequence(__null, 2299); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2298 | "Shouldn't have a VisibilityStateProperty value "do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasProperty(VisibilityStateProperty()))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!HasProperty(VisibilityStateProperty())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!HasProperty(VisibilityStateProperty())" " (" "Shouldn't have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is not set" ")", "./../../../layout/generic/nsIFrame.cpp", 2299); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!HasProperty(VisibilityStateProperty())" ") (" "Shouldn't have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is not set" ")"); do { MOZ_CrashSequence(__null, 2299); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2299 | "if NS_FRAME_VISIBILITY_IS_TRACKED is not set")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasProperty(VisibilityStateProperty()))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!HasProperty(VisibilityStateProperty())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!HasProperty(VisibilityStateProperty())" " (" "Shouldn't have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is not set" ")", "./../../../layout/generic/nsIFrame.cpp", 2299); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!HasProperty(VisibilityStateProperty())" ") (" "Shouldn't have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is not set" ")"); do { MOZ_CrashSequence(__null, 2299); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2300 | |
| 2301 | // Add the state bit so we know to track visibility for this frame, and |
| 2302 | // initialize the frame property. |
| 2303 | AddStateBits(NS_FRAME_VISIBILITY_IS_TRACKED); |
| 2304 | SetProperty(VisibilityStateProperty(), 0); |
| 2305 | |
| 2306 | mozilla::PresShell* presShell = PresShell(); |
| 2307 | if (!presShell) { |
| 2308 | return; |
| 2309 | } |
| 2310 | |
| 2311 | // Schedule a visibility update. This method will virtually always be called |
| 2312 | // when layout has changed anyway, so it's very unlikely that any additional |
| 2313 | // visibility updates will be triggered by this, but this way we guarantee |
| 2314 | // that if this frame is currently visible we'll eventually find out. |
| 2315 | presShell->ScheduleApproximateFrameVisibilityUpdateSoon(); |
| 2316 | } |
| 2317 | |
| 2318 | void nsIFrame::DisableVisibilityTracking() { |
| 2319 | if (!HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED)) { |
| 2320 | return; // Nothing to do. |
| 2321 | } |
| 2322 | |
| 2323 | bool isSet = false; |
| 2324 | uint32_t visibleCount = TakeProperty(VisibilityStateProperty(), &isSet); |
| 2325 | |
| 2326 | MOZ_ASSERT(isSet,do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2328); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2328); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2327 | "Should have a VisibilityStateProperty value "do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2328); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2328); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2328 | "if NS_FRAME_VISIBILITY_IS_TRACKED is set")do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2328); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2328); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2329 | |
| 2330 | RemoveStateBits(NS_FRAME_VISIBILITY_IS_TRACKED); |
| 2331 | |
| 2332 | if (visibleCount == 0) { |
| 2333 | return; // We were nonvisible. |
| 2334 | } |
| 2335 | |
| 2336 | // We were visible, so send an OnVisibilityChange() notification. |
| 2337 | OnVisibilityChange(Visibility::ApproximatelyNonVisible); |
| 2338 | } |
| 2339 | |
| 2340 | void nsIFrame::DecApproximateVisibleCount( |
| 2341 | const Maybe<OnNonvisible>& aNonvisibleAction |
| 2342 | /* = Nothing() */) { |
| 2343 | MOZ_ASSERT(HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED))do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED)" , "./../../../layout/generic/nsIFrame.cpp", 2343); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED)" ")"); do { MOZ_CrashSequence(__null, 2343); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2344 | |
| 2345 | bool isSet = false; |
| 2346 | uint32_t visibleCount = GetProperty(VisibilityStateProperty(), &isSet); |
| 2347 | |
| 2348 | MOZ_ASSERT(isSet,do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2350); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2350); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2349 | "Should have a VisibilityStateProperty value "do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2350); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2350); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2350 | "if NS_FRAME_VISIBILITY_IS_TRACKED is set")do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2350); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2350); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2351 | MOZ_ASSERT(visibleCount > 0,do { static_assert( mozilla::detail::AssertionConditionType< decltype(visibleCount > 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(visibleCount > 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("visibleCount > 0" " (" "Frame is already nonvisible and we're " "decrementing its visible count?" ")", "./../../../layout/generic/nsIFrame.cpp", 2353); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "visibleCount > 0" ") (" "Frame is already nonvisible and we're " "decrementing its visible count?" ")"); do { MOZ_CrashSequence (__null, 2353); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 2352 | "Frame is already nonvisible and we're "do { static_assert( mozilla::detail::AssertionConditionType< decltype(visibleCount > 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(visibleCount > 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("visibleCount > 0" " (" "Frame is already nonvisible and we're " "decrementing its visible count?" ")", "./../../../layout/generic/nsIFrame.cpp", 2353); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "visibleCount > 0" ") (" "Frame is already nonvisible and we're " "decrementing its visible count?" ")"); do { MOZ_CrashSequence (__null, 2353); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 2353 | "decrementing its visible count?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(visibleCount > 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(visibleCount > 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("visibleCount > 0" " (" "Frame is already nonvisible and we're " "decrementing its visible count?" ")", "./../../../layout/generic/nsIFrame.cpp", 2353); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "visibleCount > 0" ") (" "Frame is already nonvisible and we're " "decrementing its visible count?" ")"); do { MOZ_CrashSequence (__null, 2353); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 2354 | |
| 2355 | visibleCount--; |
| 2356 | SetProperty(VisibilityStateProperty(), visibleCount); |
| 2357 | if (visibleCount > 0) { |
| 2358 | return; |
| 2359 | } |
| 2360 | |
| 2361 | // We just became nonvisible, so send an OnVisibilityChange() notification. |
| 2362 | OnVisibilityChange(Visibility::ApproximatelyNonVisible, aNonvisibleAction); |
| 2363 | } |
| 2364 | |
| 2365 | void nsIFrame::IncApproximateVisibleCount() { |
| 2366 | MOZ_ASSERT(HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED))do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED)" , "./../../../layout/generic/nsIFrame.cpp", 2366); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "HasAnyStateBits(NS_FRAME_VISIBILITY_IS_TRACKED)" ")"); do { MOZ_CrashSequence(__null, 2366); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2367 | |
| 2368 | bool isSet = false; |
| 2369 | uint32_t visibleCount = GetProperty(VisibilityStateProperty(), &isSet); |
| 2370 | |
| 2371 | MOZ_ASSERT(isSet,do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2373); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2373); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2372 | "Should have a VisibilityStateProperty value "do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2373); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2373); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2373 | "if NS_FRAME_VISIBILITY_IS_TRACKED is set")do { static_assert( mozilla::detail::AssertionConditionType< decltype(isSet)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(isSet))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("isSet" " (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")", "./../../../layout/generic/nsIFrame.cpp" , 2373); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isSet" ") (" "Should have a VisibilityStateProperty value " "if NS_FRAME_VISIBILITY_IS_TRACKED is set" ")"); do { MOZ_CrashSequence(__null, 2373); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2374 | |
| 2375 | visibleCount++; |
| 2376 | SetProperty(VisibilityStateProperty(), visibleCount); |
| 2377 | if (visibleCount > 1) { |
| 2378 | return; |
| 2379 | } |
| 2380 | |
| 2381 | // We just became visible, so send an OnVisibilityChange() notification. |
| 2382 | OnVisibilityChange(Visibility::ApproximatelyVisible); |
| 2383 | } |
| 2384 | |
| 2385 | void nsIFrame::OnVisibilityChange(Visibility aNewVisibility, |
| 2386 | const Maybe<OnNonvisible>& aNonvisibleAction |
| 2387 | /* = Nothing() */) { |
| 2388 | // XXX(seth): In bug 1218990 we'll implement visibility tracking for CSS |
| 2389 | // images here. |
| 2390 | } |
| 2391 | |
| 2392 | static nsIFrame* GetActiveSelectionFrame(nsPresContext* aPresContext, |
| 2393 | nsIFrame* aFrame) { |
| 2394 | nsIContent* capturingContent = PresShell::GetCapturingContent(); |
| 2395 | if (capturingContent) { |
| 2396 | nsIFrame* activeFrame = |
| 2397 | aPresContext->GetPrimaryOrAreaImageFrameFor(capturingContent); |
| 2398 | return activeFrame ? activeFrame : aFrame; |
| 2399 | } |
| 2400 | |
| 2401 | return aFrame; |
| 2402 | } |
| 2403 | |
| 2404 | bool nsIFrame::ShouldHandleSelectionMovementEvents(ForSelectionStart aType) { |
| 2405 | if (GetDisplaySelection() == nsISelectionController::SELECTION_OFF) { |
| 2406 | return false; |
| 2407 | } |
| 2408 | if (UsedUserSelect(this, aType) == StyleUserSelect::None) { |
| 2409 | // Check whether style allows selection. |
| 2410 | return false; |
| 2411 | } |
| 2412 | if (IsScrollbarFrame() || IsHTMLCanvasFrame()) { |
| 2413 | // Scrollbars and canvas don't move selection with the mouse. |
| 2414 | return false; |
| 2415 | } |
| 2416 | return true; |
| 2417 | } |
| 2418 | |
| 2419 | static Element* FindElementAncestorForMozSelection(nsIContent* aContent) { |
| 2420 | NS_ENSURE_TRUE(aContent, nullptr)do { if ((__builtin_expect(!!(!(aContent)), 0))) { NS_DebugBreak (NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aContent" ") failed", nullptr , "./../../../layout/generic/nsIFrame.cpp", 2420); return nullptr ; } } while (false); |
| 2421 | while (aContent && aContent->IsInNativeAnonymousSubtree()) { |
| 2422 | aContent = aContent->GetClosestNativeAnonymousSubtreeRootParentOrHost(); |
| 2423 | } |
| 2424 | NS_ASSERTION(aContent, "aContent isn't in non-anonymous tree?")do { if (!(aContent)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "aContent isn't in non-anonymous tree?" , "aContent", "./../../../layout/generic/nsIFrame.cpp", 2424) ; MOZ_PretendNoReturn(); } } while (0); |
| 2425 | return aContent ? aContent->GetAsElementOrParentElement() : nullptr; |
| 2426 | } |
| 2427 | |
| 2428 | already_AddRefed<ComputedStyle> nsIFrame::ComputeSelectionStyle( |
| 2429 | int16_t aSelectionStatus) const { |
| 2430 | // Just bail out if not a selection-status that ::selection applies to. |
| 2431 | if (aSelectionStatus != nsISelectionController::SELECTION_ON && |
| 2432 | aSelectionStatus != nsISelectionController::SELECTION_DISABLED) { |
| 2433 | return nullptr; |
| 2434 | } |
| 2435 | Element* element = FindElementAncestorForMozSelection(GetContent()); |
| 2436 | if (!element) { |
| 2437 | return nullptr; |
| 2438 | } |
| 2439 | nsIFrame* primaryFrame = element->GetPrimaryFrame(); |
| 2440 | ComputedStyle* parentStyle = primaryFrame ? primaryFrame->Style() : Style(); |
| 2441 | RefPtr<ComputedStyle> pseudoStyle = |
| 2442 | PresContext()->StyleSet()->ProbePseudoElementStyle( |
| 2443 | *element, PseudoStyleType::Selection, nullptr, parentStyle); |
| 2444 | if (!pseudoStyle) { |
| 2445 | return nullptr; |
| 2446 | } |
| 2447 | // When in high-contrast mode, the style system ends up ignoring the color |
| 2448 | // declarations, which means that the ::selection style becomes the inherited |
| 2449 | // color, and default background. That's no good. |
| 2450 | // When force-color-adjust is set to none allow using the color styles, |
| 2451 | // as they will not be replaced. |
| 2452 | if (PresContext()->ForcingColors() && |
| 2453 | pseudoStyle->StyleText()->mForcedColorAdjust != |
| 2454 | StyleForcedColorAdjust::None) { |
| 2455 | return nullptr; |
| 2456 | } |
| 2457 | return do_AddRef(pseudoStyle); |
| 2458 | } |
| 2459 | |
| 2460 | already_AddRefed<ComputedStyle> nsIFrame::ComputeHighlightSelectionStyle( |
| 2461 | nsAtom* aHighlightName) { |
| 2462 | Element* element = FindElementAncestorForMozSelection(GetContent()); |
| 2463 | if (!element) { |
| 2464 | return nullptr; |
| 2465 | } |
| 2466 | nsIFrame* primaryFrame = element->GetPrimaryFrame(); |
| 2467 | ComputedStyle* parentStyle = primaryFrame ? primaryFrame->Style() : Style(); |
| 2468 | return PresContext()->StyleSet()->ProbePseudoElementStyle( |
| 2469 | *element, PseudoStyleType::Highlight, aHighlightName, parentStyle); |
| 2470 | } |
| 2471 | |
| 2472 | already_AddRefed<ComputedStyle> nsIFrame::ComputeTargetTextStyle() const { |
| 2473 | const Element* element = FindElementAncestorForMozSelection(GetContent()); |
| 2474 | if (!element) { |
| 2475 | return nullptr; |
| 2476 | } |
| 2477 | nsIFrame* primaryFrame = element->GetPrimaryFrame(); |
| 2478 | ComputedStyle* parentStyle = primaryFrame ? primaryFrame->Style() : Style(); |
| 2479 | RefPtr pseudoStyle = PresContext()->StyleSet()->ProbePseudoElementStyle( |
| 2480 | *element, PseudoStyleType::TargetText, nullptr, parentStyle); |
| 2481 | if (!pseudoStyle) { |
| 2482 | return nullptr; |
| 2483 | } |
| 2484 | if (PresContext()->ForcingColors() && |
| 2485 | pseudoStyle->StyleText()->mForcedColorAdjust != |
| 2486 | StyleForcedColorAdjust::None) { |
| 2487 | return nullptr; |
| 2488 | } |
| 2489 | return pseudoStyle.forget(); |
| 2490 | } |
| 2491 | |
| 2492 | nsTextControlFrame* nsIFrame::GetContainingTextControlFrame() const { |
| 2493 | for (const nsIFrame* cur = this; cur; cur = cur->GetParent()) { |
| 2494 | if (const nsTextControlFrame* tc = do_QueryFrame(cur)) { |
| 2495 | return const_cast<nsTextControlFrame*>(tc); |
| 2496 | } |
| 2497 | if (cur->Style()->IsAnonBox()) { |
| 2498 | // Anon boxes could belong to the <input> / <textarea> itself. |
| 2499 | continue; |
| 2500 | } |
| 2501 | auto* content = cur->GetContent(); |
| 2502 | if (!content || !content->IsInNativeAnonymousSubtree()) { |
| 2503 | // All content inside text controls is anonymous. |
| 2504 | break; |
| 2505 | } |
| 2506 | } |
| 2507 | return nullptr; |
| 2508 | } |
| 2509 | |
| 2510 | bool nsIFrame::CanBeDynamicReflowRoot() const { |
| 2511 | const auto& display = *StyleDisplay(); |
| 2512 | if (IsLineParticipant() || display.mDisplay.IsRuby() || |
| 2513 | display.IsInnerTableStyle() || |
| 2514 | display.DisplayInside() == StyleDisplayInside::Table) { |
| 2515 | // We have a display type where 'width' and 'height' don't actually set the |
| 2516 | // width or height (i.e., the size depends on content). |
| 2517 | MOZ_ASSERT(!HasAnyStateBits(NS_FRAME_DYNAMIC_REFLOW_ROOT),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_FRAME_DYNAMIC_REFLOW_ROOT))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!HasAnyStateBits(NS_FRAME_DYNAMIC_REFLOW_ROOT)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_FRAME_DYNAMIC_REFLOW_ROOT)" " (" "should not have dynamic reflow root bit" ")", "./../../../layout/generic/nsIFrame.cpp" , 2518); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_FRAME_DYNAMIC_REFLOW_ROOT)" ") (" "should not have dynamic reflow root bit" ")"); do { MOZ_CrashSequence (__null, 2518); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 2518 | "should not have dynamic reflow root bit")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_FRAME_DYNAMIC_REFLOW_ROOT))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!HasAnyStateBits(NS_FRAME_DYNAMIC_REFLOW_ROOT)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_FRAME_DYNAMIC_REFLOW_ROOT)" " (" "should not have dynamic reflow root bit" ")", "./../../../layout/generic/nsIFrame.cpp" , 2518); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_FRAME_DYNAMIC_REFLOW_ROOT)" ") (" "should not have dynamic reflow root bit" ")"); do { MOZ_CrashSequence (__null, 2518); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 2519 | return false; |
| 2520 | } |
| 2521 | |
| 2522 | // In general, frames that have contain:layout+size can be reflow roots. |
| 2523 | // (One exception: table-wrapper frames don't work well as reflow roots, |
| 2524 | // because their inner-table ReflowInput init path tries to reuse & deref |
| 2525 | // the wrapper's containing block's reflow input, which may be null if we |
| 2526 | // initiate reflow from the table-wrapper itself.) |
| 2527 | // |
| 2528 | // Changes to `contain` force frame reconstructions, so we used to use |
| 2529 | // NS_FRAME_REFLOW_ROOT, this bit could be set for the whole lifetime of |
| 2530 | // this frame. But after the support of `content-visibility: auto` which |
| 2531 | // is with contain layout + size when it's not relevant to user, and only |
| 2532 | // with contain layout when it is relevant. The frame does not reconstruct |
| 2533 | // when the relevancy changes. So we use NS_FRAME_DYNAMIC_REFLOW_ROOT instead. |
| 2534 | // |
| 2535 | // We place it above the pref check on purpose, to make sure it works for |
| 2536 | // containment even with the pref disabled. |
| 2537 | if (display.IsContainLayout() && GetContainSizeAxes().IsBoth()) { |
| 2538 | return true; |
| 2539 | } |
| 2540 | |
| 2541 | if (!StaticPrefs::layout_dynamic_reflow_roots_enabled()) { |
| 2542 | return false; |
| 2543 | } |
| 2544 | |
| 2545 | // We can't serve as a dynamic reflow root if our used 'width' and 'height' |
| 2546 | // might be influenced by content. |
| 2547 | // |
| 2548 | // FIXME: For display:block, we should probably optimize inline-size: auto. |
| 2549 | // FIXME: Other flex and grid cases? |
| 2550 | const auto& pos = *StylePosition(); |
| 2551 | const auto anchorResolutionParams = AnchorPosResolutionParams::From(this); |
| 2552 | const auto width = pos.GetWidth(anchorResolutionParams); |
| 2553 | const auto height = pos.GetHeight(anchorResolutionParams); |
| 2554 | if (!width->IsLengthPercentage() || width->HasPercent() || |
| 2555 | !height->IsLengthPercentage() || height->HasPercent() || |
| 2556 | IsIntrinsicKeyword(*pos.GetMinWidth(anchorResolutionParams)) || |
| 2557 | IsIntrinsicKeyword(*pos.GetMaxWidth(anchorResolutionParams)) || |
| 2558 | IsIntrinsicKeyword(*pos.GetMinHeight(anchorResolutionParams)) || |
| 2559 | IsIntrinsicKeyword(*pos.GetMaxHeight(anchorResolutionParams)) || |
| 2560 | ((pos.GetMinWidth(anchorResolutionParams)->IsAuto() || |
| 2561 | pos.GetMinHeight(anchorResolutionParams)->IsAuto()) && |
| 2562 | IsFlexOrGridItem())) { |
| 2563 | return false; |
| 2564 | } |
| 2565 | |
| 2566 | // If our flex-basis is 'auto', it'll defer to 'width' (or 'height') which |
| 2567 | // we've already checked. Otherwise, it preempts them, so we need to |
| 2568 | // perform the same "could-this-value-be-influenced-by-content" checks that |
| 2569 | // we performed for 'width' and 'height' above. |
| 2570 | if (IsFlexItem()) { |
| 2571 | const auto& flexBasis = pos.mFlexBasis; |
| 2572 | if (!flexBasis.IsAuto()) { |
| 2573 | if (!flexBasis.IsSize() || !flexBasis.AsSize().IsLengthPercentage() || |
| 2574 | flexBasis.AsSize().HasPercent()) { |
| 2575 | return false; |
| 2576 | } |
| 2577 | } |
| 2578 | } |
| 2579 | |
| 2580 | if (!IsFixedPosContainingBlock()) { |
| 2581 | // We can't treat this frame as a reflow root, since dynamic changes |
| 2582 | // to absolutely-positioned frames inside of it require that we |
| 2583 | // reflow the placeholder before we reflow the absolutely positioned |
| 2584 | // frame. |
| 2585 | // FIXME: Alternatively, we could sort the reflow roots in |
| 2586 | // PresShell::ProcessReflowCommands by depth in the tree, from |
| 2587 | // deepest to least deep. However, for performance (FIXME) we |
| 2588 | // should really be sorting them in the opposite order! |
| 2589 | return false; |
| 2590 | } |
| 2591 | |
| 2592 | // If we participate in a container's block reflow context, or margins |
| 2593 | // can collapse through us, we can't be a dynamic reflow root. |
| 2594 | // (NS_BLOCK_BFC is block specific bit, check first as an optimization, it's |
| 2595 | // okay because we also check that it is a block frame.) |
| 2596 | if (!HasAnyStateBits(NS_BLOCK_BFC) && IsBlockFrameOrSubclass()) { |
| 2597 | return false; |
| 2598 | } |
| 2599 | |
| 2600 | // Subgrids are never reflow roots, but 'contain:layout/paint' prevents |
| 2601 | // creating a subgrid in the first place. |
| 2602 | if (pos.mGridTemplateColumns.IsSubgrid() || |
| 2603 | pos.mGridTemplateRows.IsSubgrid()) { |
| 2604 | // NOTE: we could check that 'display' of our parent's primary frame is |
| 2605 | // '[inline-]grid' here but that's probably not worth it in practice. |
| 2606 | if (!display.IsContainLayout() && !display.IsContainPaint()) { |
| 2607 | return false; |
| 2608 | } |
| 2609 | } |
| 2610 | |
| 2611 | // If we are split, we can't be a dynamic reflow root. Our reflow status may |
| 2612 | // change after reflow, and our parent is responsible to create or delete our |
| 2613 | // next-in-flow. |
| 2614 | if (GetPrevContinuation() || GetNextContinuation()) { |
| 2615 | return false; |
| 2616 | } |
| 2617 | |
| 2618 | return true; |
| 2619 | } |
| 2620 | |
| 2621 | /******************************************************** |
| 2622 | * Refreshes each content's frame |
| 2623 | *********************************************************/ |
| 2624 | |
| 2625 | void nsIFrame::DisplayOutlineUnconditional(nsDisplayListBuilder* aBuilder, |
| 2626 | const nsDisplayListSet& aLists) { |
| 2627 | // Per https://drafts.csswg.org/css-tables-3/#global-style-overrides: |
| 2628 | // "All css properties of table-column and table-column-group boxes are |
| 2629 | // ignored, except when explicitly specified by this specification." |
| 2630 | // CSS outlines fall into this category, so we skip them on these boxes. |
| 2631 | MOZ_ASSERT(!IsTableColGroupFrame() && !IsTableColFrame())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!IsTableColGroupFrame() && !IsTableColFrame( ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!IsTableColGroupFrame() && !IsTableColFrame( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!IsTableColGroupFrame() && !IsTableColFrame()", "./../../../layout/generic/nsIFrame.cpp" , 2631); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!IsTableColGroupFrame() && !IsTableColFrame()" ")"); do { MOZ_CrashSequence(__null, 2631); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2632 | const auto& outline = *StyleOutline(); |
| 2633 | |
| 2634 | if (!outline.ShouldPaintOutline()) { |
| 2635 | return; |
| 2636 | } |
| 2637 | |
| 2638 | // Outlines are painted by the table wrapper frame. |
| 2639 | if (IsTableFrame()) { |
| 2640 | return; |
| 2641 | } |
| 2642 | |
| 2643 | if (HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT) && |
| 2644 | ScrollableOverflowRect().IsEmpty()) { |
| 2645 | // Skip parts of IB-splits with an empty overflow rect, see bug 434301. |
| 2646 | // We may still want to fix some of the overflow area calculations over in |
| 2647 | // that bug. |
| 2648 | return; |
| 2649 | } |
| 2650 | |
| 2651 | // We don't display outline-style: auto on themed frames that have their own |
| 2652 | // focus indicators. |
| 2653 | if (outline.mOutlineStyle.IsAuto()) { |
| 2654 | auto* disp = StyleDisplay(); |
| 2655 | if (IsThemed(disp) && PresContext()->Theme()->ThemeDrawsFocusForWidget( |
| 2656 | this, disp->EffectiveAppearance())) { |
| 2657 | return; |
| 2658 | } |
| 2659 | } |
| 2660 | |
| 2661 | aLists.Outlines()->AppendNewToTop<nsDisplayOutline>(aBuilder, this); |
| 2662 | } |
| 2663 | |
| 2664 | void nsIFrame::DisplayOutline(nsDisplayListBuilder* aBuilder, |
| 2665 | const nsDisplayListSet& aLists) { |
| 2666 | if (!IsVisibleForPainting()) { |
| 2667 | return; |
| 2668 | } |
| 2669 | |
| 2670 | DisplayOutlineUnconditional(aBuilder, aLists); |
| 2671 | } |
| 2672 | |
| 2673 | void nsIFrame::DisplayInsetBoxShadowUnconditional( |
| 2674 | nsDisplayListBuilder* aBuilder, nsDisplayList* aList) { |
| 2675 | // XXXbz should box-shadow for rows/rowgroups/columns/colgroups get painted |
| 2676 | // just because we're visible? Or should it depend on the cell visibility |
| 2677 | // when we're not the whole table? |
| 2678 | const auto* effects = StyleEffects(); |
| 2679 | if (effects->HasBoxShadowWithInset(true)) { |
| 2680 | aList->AppendNewToTop<nsDisplayBoxShadowInner>(aBuilder, this); |
| 2681 | } |
| 2682 | } |
| 2683 | |
| 2684 | void nsIFrame::DisplayInsetBoxShadow(nsDisplayListBuilder* aBuilder, |
| 2685 | nsDisplayList* aList) { |
| 2686 | if (!IsVisibleForPainting()) { |
| 2687 | return; |
| 2688 | } |
| 2689 | |
| 2690 | DisplayInsetBoxShadowUnconditional(aBuilder, aList); |
| 2691 | } |
| 2692 | |
| 2693 | void nsIFrame::DisplayOutsetBoxShadowUnconditional( |
| 2694 | nsDisplayListBuilder* aBuilder, nsDisplayList* aList) { |
| 2695 | // XXXbz should box-shadow for rows/rowgroups/columns/colgroups get painted |
| 2696 | // just because we're visible? Or should it depend on the cell visibility |
| 2697 | // when we're not the whole table? |
| 2698 | const auto* effects = StyleEffects(); |
| 2699 | if (effects->HasBoxShadowWithInset(false)) { |
| 2700 | aList->AppendNewToTop<nsDisplayBoxShadowOuter>(aBuilder, this); |
| 2701 | } |
| 2702 | } |
| 2703 | |
| 2704 | void nsIFrame::DisplayOutsetBoxShadow(nsDisplayListBuilder* aBuilder, |
| 2705 | nsDisplayList* aList) { |
| 2706 | if (!IsVisibleForPainting()) { |
| 2707 | return; |
| 2708 | } |
| 2709 | |
| 2710 | DisplayOutsetBoxShadowUnconditional(aBuilder, aList); |
| 2711 | } |
| 2712 | |
| 2713 | void nsIFrame::DisplayCaret(nsDisplayListBuilder* aBuilder, |
| 2714 | nsDisplayList* aList) { |
| 2715 | if (!IsVisibleForPainting()) { |
| 2716 | return; |
| 2717 | } |
| 2718 | |
| 2719 | aList->AppendNewToTop<nsDisplayCaret>(aBuilder, this); |
| 2720 | } |
| 2721 | |
| 2722 | nscolor nsIFrame::GetCaretColorAt(int32_t aOffset) { |
| 2723 | return nsLayoutUtils::GetTextColor(this, &nsStyleUI::mCaretColor); |
| 2724 | } |
| 2725 | |
| 2726 | auto nsIFrame::ComputeShouldPaintBackground() const -> ShouldPaintBackground { |
| 2727 | nsPresContext* pc = PresContext(); |
| 2728 | ShouldPaintBackground settings{pc->GetBackgroundColorDraw(), |
| 2729 | pc->GetBackgroundImageDraw()}; |
| 2730 | if (settings.mColor && settings.mImage) { |
| 2731 | return settings; |
| 2732 | } |
| 2733 | |
| 2734 | if (StyleVisibility()->mPrintColorAdjust == StylePrintColorAdjust::Exact) { |
| 2735 | return {true, true}; |
| 2736 | } |
| 2737 | |
| 2738 | return settings; |
| 2739 | } |
| 2740 | |
| 2741 | bool nsIFrame::DisplayBackgroundUnconditional(nsDisplayListBuilder* aBuilder, |
| 2742 | const nsDisplayListSet& aLists) { |
| 2743 | if (aBuilder->IsForEventDelivery() && !aBuilder->HitTestIsForVisibility()) { |
| 2744 | // For hit-testing, we generally just need a light-weight data structure |
| 2745 | // like nsDisplayEventReceiver. But if the hit-testing is for visibility, |
| 2746 | // then we need to know the opaque region in order to determine whether to |
| 2747 | // stop or not. |
| 2748 | aLists.BorderBackground()->AppendNewToTop<nsDisplayEventReceiver>(aBuilder, |
| 2749 | this); |
| 2750 | return false; |
| 2751 | } |
| 2752 | |
| 2753 | const AppendedBackgroundType result = |
| 2754 | nsDisplayBackgroundImage::AppendBackgroundItemsToTop( |
| 2755 | aBuilder, this, |
| 2756 | GetRectRelativeToSelf() + aBuilder->ToReferenceFrame(this), |
| 2757 | aLists.BorderBackground()); |
| 2758 | |
| 2759 | if (result == AppendedBackgroundType::None) { |
| 2760 | aBuilder->BuildCompositorHitTestInfoIfNeeded(this, |
| 2761 | aLists.BorderBackground()); |
| 2762 | } |
| 2763 | |
| 2764 | return result == AppendedBackgroundType::ThemedBackground; |
| 2765 | } |
| 2766 | |
| 2767 | void nsIFrame::DisplayBorderBackgroundOutline(nsDisplayListBuilder* aBuilder, |
| 2768 | const nsDisplayListSet& aLists) { |
| 2769 | // The visibility check belongs here since child elements have the |
| 2770 | // opportunity to override the visibility property and display even if |
| 2771 | // their parent is hidden. |
| 2772 | if (!IsVisibleForPainting()) { |
| 2773 | return; |
| 2774 | } |
| 2775 | |
| 2776 | DisplayOutsetBoxShadowUnconditional(aBuilder, aLists.BorderBackground()); |
| 2777 | |
| 2778 | bool bgIsThemed = DisplayBackgroundUnconditional(aBuilder, aLists); |
| 2779 | DisplayInsetBoxShadowUnconditional(aBuilder, aLists.BorderBackground()); |
| 2780 | |
| 2781 | // If there's a themed background, we should not create a border item. |
| 2782 | // It won't be rendered. |
| 2783 | // Don't paint borders for tables here, since they paint them in a different |
| 2784 | // order. |
| 2785 | if (!bgIsThemed && StyleBorder()->HasBorder() && !IsTableFrame()) { |
| 2786 | aLists.BorderBackground()->AppendNewToTop<nsDisplayBorder>(aBuilder, this); |
| 2787 | } |
| 2788 | |
| 2789 | DisplayOutlineUnconditional(aBuilder, aLists); |
| 2790 | } |
| 2791 | |
| 2792 | inline static bool IsSVGContentWithCSSClip(const nsIFrame* aFrame) { |
| 2793 | // The CSS spec says that the 'clip' property only applies to absolutely |
| 2794 | // positioned elements, whereas the SVG spec says that it applies to SVG |
| 2795 | // elements regardless of the value of the 'position' property. Here we obey |
| 2796 | // the CSS spec for outer-<svg> (since that's what we generally do), but |
| 2797 | // obey the SVG spec for other SVG elements to which 'clip' applies. |
| 2798 | return aFrame->HasAnyStateBits(NS_FRAME_SVG_LAYOUT) && |
| 2799 | aFrame->GetContent()->IsAnyOfSVGElements(nsGkAtoms::svg, |
| 2800 | nsGkAtoms::foreignObject); |
| 2801 | } |
| 2802 | |
| 2803 | Maybe<nsRect> nsIFrame::GetClipPropClipRect(const nsStyleDisplay* aDisp, |
| 2804 | const nsStyleEffects* aEffects, |
| 2805 | const nsSize& aSize) const { |
| 2806 | if (aEffects->mClip.IsAuto() || |
| 2807 | !(aDisp->IsAbsolutelyPositioned(this) || IsSVGContentWithCSSClip(this))) { |
| 2808 | return Nothing(); |
| 2809 | } |
| 2810 | |
| 2811 | auto& clipRect = aEffects->mClip.AsRect(); |
| 2812 | nsRect rect = clipRect.ToLayoutRect(); |
| 2813 | if (MOZ_LIKELY(StyleBorder()->mBoxDecorationBreak ==(__builtin_expect(!!(StyleBorder()->mBoxDecorationBreak == StyleBoxDecorationBreak::Slice), 1)) |
| 2814 | StyleBoxDecorationBreak::Slice)(__builtin_expect(!!(StyleBorder()->mBoxDecorationBreak == StyleBoxDecorationBreak::Slice), 1))) { |
| 2815 | // The clip applies to the joined boxes so it's relative the first |
| 2816 | // continuation. |
| 2817 | nscoord y = 0; |
| 2818 | for (nsIFrame* f = GetPrevContinuation(); f; f = f->GetPrevContinuation()) { |
| 2819 | y += f->GetRect().height; |
| 2820 | } |
| 2821 | rect.MoveBy(nsPoint(0, -y)); |
| 2822 | } |
| 2823 | |
| 2824 | if (clipRect.right.IsAuto()) { |
| 2825 | rect.width = aSize.width - rect.x; |
| 2826 | } |
| 2827 | if (clipRect.bottom.IsAuto()) { |
| 2828 | rect.height = aSize.height - rect.y; |
| 2829 | } |
| 2830 | return Some(rect); |
| 2831 | } |
| 2832 | |
| 2833 | // https://drafts.csswg.org/css-view-transitions-1/#named-and-transitioning |
| 2834 | // |
| 2835 | // Note https://github.com/w3c/csswg-drafts/issues/11772, however, for the root |
| 2836 | // style check. |
| 2837 | bool nsIFrame::ForcesStackingContextForViewTransition() const { |
| 2838 | auto* style = Style(); |
| 2839 | return !style->IsRootElementStyle() && |
| 2840 | (style->StyleUIReset()->HasViewTransitionName() || |
| 2841 | HasAnyStateBits(NS_FRAME_CAPTURED_IN_VIEW_TRANSITION) || |
| 2842 | style->StyleDisplay()->mWillChange.bits & |
| 2843 | mozilla::StyleWillChangeBits::VIEW_TRANSITION_NAME); |
| 2844 | } |
| 2845 | |
| 2846 | /** |
| 2847 | * If the CSS 'overflow' property applies to this frame, and is not |
| 2848 | * handled by constructing a dedicated nsHTML/XULScrollFrame, set up clipping |
| 2849 | * for that overflow in aBuilder->ClipState() to clip all containing-block |
| 2850 | * descendants. |
| 2851 | */ |
| 2852 | static void ApplyOverflowClipping( |
| 2853 | nsDisplayListBuilder* aBuilder, const nsIFrame* aFrame, |
| 2854 | PhysicalAxes aClipAxes, |
| 2855 | DisplayListClipState::AutoClipMultiple& aClipState) { |
| 2856 | nsRect clipRect; |
| 2857 | nsRectCornerRadii radii; |
| 2858 | nsMargin inset; |
| 2859 | bool haveRadii = aFrame->ComputeOverflowClipRectRelativeToSelf( |
| 2860 | aClipAxes, clipRect, radii, inset); |
| 2861 | aClipState.ClipContainingBlockDescendantsExtra( |
| 2862 | clipRect + aBuilder->ToReferenceFrame(aFrame), |
| 2863 | haveRadii ? &radii : nullptr, haveRadii ? &inset : nullptr); |
| 2864 | } |
| 2865 | |
| 2866 | static Sides ToSkipSides(PhysicalAxes aClipAxes) { |
| 2867 | SideBits result{}; |
| 2868 | if (!aClipAxes.contains(PhysicalAxis::Vertical)) { |
| 2869 | result |= SideBits::eTop; |
| 2870 | result |= SideBits::eBottom; |
| 2871 | } |
| 2872 | if (!aClipAxes.contains(PhysicalAxis::Horizontal)) { |
| 2873 | result |= SideBits::eLeft; |
| 2874 | result |= SideBits::eRight; |
| 2875 | } |
| 2876 | return Sides(result); |
| 2877 | } |
| 2878 | |
| 2879 | bool nsIFrame::ComputeOverflowClipRectRelativeToSelf( |
| 2880 | const PhysicalAxes aClipAxes, nsRect& aOutRect, |
| 2881 | nsRectCornerRadii& aOutRadii, nsMargin& aOutInset) const { |
| 2882 | // Only 'clip' is handled here (and 'hidden' for table frames, and any |
| 2883 | // non-'visible' value for blocks in a paginated context). |
| 2884 | // We allow 'clip' to apply to any kind of frame. This is required by |
| 2885 | // comboboxes which make their display text (an inline frame) have clipping. |
| 2886 | MOZ_ASSERT(!aClipAxes.isEmpty())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aClipAxes.isEmpty())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!aClipAxes.isEmpty()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!aClipAxes.isEmpty()" , "./../../../layout/generic/nsIFrame.cpp", 2886); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!aClipAxes.isEmpty()" ")"); do { MOZ_CrashSequence (__null, 2886); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 2887 | MOZ_ASSERT(ShouldApplyOverflowClipping(StyleDisplay()) == aClipAxes)do { static_assert( mozilla::detail::AssertionConditionType< decltype(ShouldApplyOverflowClipping(StyleDisplay()) == aClipAxes )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(ShouldApplyOverflowClipping(StyleDisplay()) == aClipAxes ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "ShouldApplyOverflowClipping(StyleDisplay()) == aClipAxes", "./../../../layout/generic/nsIFrame.cpp" , 2887); AnnotateMozCrashReason("MOZ_ASSERT" "(" "ShouldApplyOverflowClipping(StyleDisplay()) == aClipAxes" ")"); do { MOZ_CrashSequence(__null, 2887); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2888 | auto boxMargin = OverflowClipMargin(aClipAxes, /* aAllowNegative = */ true); |
| 2889 | boxMargin.ApplySkipSides(GetSkipSides() | ToSkipSides(aClipAxes)); |
| 2890 | aOutInset = -boxMargin; |
| 2891 | |
| 2892 | aOutRect = nsRect(nsPoint(), GetSize()); |
| 2893 | aOutRect.Inflate(boxMargin); |
| 2894 | if (MOZ_UNLIKELY(!aClipAxes.contains(PhysicalAxis::Horizontal))(__builtin_expect(!!(!aClipAxes.contains(PhysicalAxis::Horizontal )), 0))) { |
| 2895 | // NOTE(mats) We shouldn't be clipping at all in this dimension really, |
| 2896 | // but clipping in just one axis isn't supported by our GFX APIs so we |
| 2897 | // clip to our visual overflow rect instead. |
| 2898 | nsRect o = InkOverflowRectRelativeToSelf(); |
| 2899 | aOutRect.x = o.x; |
| 2900 | aOutRect.width = o.width; |
| 2901 | } |
| 2902 | if (MOZ_UNLIKELY(!aClipAxes.contains(PhysicalAxis::Vertical))(__builtin_expect(!!(!aClipAxes.contains(PhysicalAxis::Vertical )), 0))) { |
| 2903 | // See the note above. |
| 2904 | nsRect o = InkOverflowRectRelativeToSelf(); |
| 2905 | aOutRect.y = o.y; |
| 2906 | aOutRect.height = o.height; |
| 2907 | } |
| 2908 | if (!GetBorderRadii(aOutRadii)) { |
| 2909 | return false; |
| 2910 | } |
| 2911 | aOutRadii.AdjustOutwards(boxMargin); |
| 2912 | return true; |
| 2913 | } |
| 2914 | |
| 2915 | nsMargin nsIFrame::OverflowClipMargin(PhysicalAxes aClipAxes, |
| 2916 | bool aAllowNegative) const { |
| 2917 | nsMargin result; |
| 2918 | if (aClipAxes.isEmpty()) { |
| 2919 | return result; |
| 2920 | } |
| 2921 | const auto& margin = StyleMargin()->mOverflowClipMargin; |
| 2922 | if (!aAllowNegative && margin.offset.IsZero()) { |
| 2923 | return result; |
| 2924 | } |
| 2925 | switch (margin.visual_box) { |
| 2926 | case StyleOverflowClipMarginBox::BorderBox: |
| 2927 | break; |
| 2928 | case StyleOverflowClipMarginBox::PaddingBox: |
| 2929 | result = -GetUsedBorder(); |
| 2930 | break; |
| 2931 | case StyleOverflowClipMarginBox::ContentBox: |
| 2932 | result = -GetUsedBorderAndPadding(); |
| 2933 | break; |
| 2934 | } |
| 2935 | if (!margin.offset.IsZero()) { |
| 2936 | nscoord marginAu = margin.offset.ToAppUnits(); |
| 2937 | result += nsMargin(marginAu, marginAu, marginAu, marginAu); |
| 2938 | } |
| 2939 | if (!aAllowNegative) { |
| 2940 | result.EnsureAtLeast(nsMargin()); |
| 2941 | } |
| 2942 | return result; |
| 2943 | } |
| 2944 | |
| 2945 | /** |
| 2946 | * Returns whether a display item that gets created with the builder's current |
| 2947 | * state will have a scrolled clip, i.e. a clip that is scrolled by a scroll |
| 2948 | * frame which does not move the item itself. |
| 2949 | */ |
| 2950 | static bool BuilderHasScrolledClip(nsDisplayListBuilder* aBuilder) { |
| 2951 | const DisplayItemClipChain* currentClip = |
| 2952 | aBuilder->ClipState().GetCurrentCombinedClipChain(aBuilder); |
| 2953 | if (!currentClip) { |
| 2954 | return false; |
| 2955 | } |
| 2956 | |
| 2957 | const ActiveScrolledRoot* currentClipASR = currentClip->mASR; |
| 2958 | const ActiveScrolledRoot* currentASR = aBuilder->CurrentActiveScrolledRoot(); |
| 2959 | return ActiveScrolledRoot::PickDescendant(currentClipASR, currentASR) != |
| 2960 | currentASR; |
| 2961 | } |
| 2962 | |
| 2963 | class AutoTrackStackingContextBits { |
| 2964 | nsDisplayListBuilder& mBuilder; |
| 2965 | StackingContextBits mBitsToSet; |
| 2966 | |
| 2967 | public: |
| 2968 | explicit AutoTrackStackingContextBits(nsDisplayListBuilder& aBuilder) |
| 2969 | : mBuilder(aBuilder), mBitsToSet(aBuilder.GetStackingContextBits()) {} |
| 2970 | |
| 2971 | ~AutoTrackStackingContextBits() { |
| 2972 | mBuilder.SetStackingContextBits(mBitsToSet); |
| 2973 | } |
| 2974 | |
| 2975 | void AddToParent(StackingContextBits aBits) { mBitsToSet |= aBits; } |
| 2976 | }; |
| 2977 | |
| 2978 | static bool IsFrameOrAncestorApzAware(nsIFrame* aFrame) { |
| 2979 | nsIContent* node = aFrame->GetContent(); |
| 2980 | if (!node) { |
| 2981 | return false; |
| 2982 | } |
| 2983 | |
| 2984 | do { |
| 2985 | if (node->IsNodeApzAware()) { |
| 2986 | return true; |
| 2987 | } |
| 2988 | nsIContent* shadowRoot = node->GetShadowRoot(); |
| 2989 | if (shadowRoot && shadowRoot->IsNodeApzAware()) { |
| 2990 | return true; |
| 2991 | } |
| 2992 | |
| 2993 | // Even if the node owning aFrame doesn't have apz-aware event listeners |
| 2994 | // itself, its shadow root or display: contents ancestors (which have no |
| 2995 | // frames) might, so we need to account for them too. |
| 2996 | } while ((node = node->GetFlattenedTreeParent()) && node->IsElement() && |
| 2997 | node->AsElement()->IsDisplayContents()); |
| 2998 | |
| 2999 | return false; |
| 3000 | } |
| 3001 | |
| 3002 | static void CheckForApzAwareEventHandlers(nsDisplayListBuilder* aBuilder, |
| 3003 | nsIFrame* aFrame) { |
| 3004 | if (aBuilder->GetAncestorHasApzAwareEventHandler()) { |
| 3005 | return; |
| 3006 | } |
| 3007 | |
| 3008 | if (IsFrameOrAncestorApzAware(aFrame)) { |
| 3009 | aBuilder->SetAncestorHasApzAwareEventHandler(true); |
| 3010 | } |
| 3011 | } |
| 3012 | |
| 3013 | static void UpdateCurrentHitTestInfo(nsDisplayListBuilder* aBuilder, |
| 3014 | nsIFrame* aFrame) { |
| 3015 | if (!aBuilder->BuildCompositorHitTestInfo()) { |
| 3016 | // Compositor hit test info is not used. |
| 3017 | return; |
| 3018 | } |
| 3019 | |
| 3020 | CheckForApzAwareEventHandlers(aBuilder, aFrame); |
| 3021 | |
| 3022 | const CompositorHitTestInfo info = |
| 3023 | aFrame->GetCompositorHitTestInfoWithoutPointerEvents(aBuilder); |
| 3024 | aBuilder->SetInheritedCompositorHitTestInfo(info); |
| 3025 | } |
| 3026 | |
| 3027 | /** |
| 3028 | * True if aDescendant participates the context aAncestor participating. |
| 3029 | */ |
| 3030 | static bool FrameParticipatesIn3DContext(nsIFrame* aAncestor, |
| 3031 | nsIFrame* aDescendant) { |
| 3032 | MOZ_ASSERT(aAncestor != aDescendant)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aAncestor != aDescendant)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aAncestor != aDescendant))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aAncestor != aDescendant" , "./../../../layout/generic/nsIFrame.cpp", 3032); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aAncestor != aDescendant" ")"); do { MOZ_CrashSequence (__null, 3032); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 3033 | MOZ_ASSERT(aAncestor->GetContent() != aDescendant->GetContent())do { static_assert( mozilla::detail::AssertionConditionType< decltype(aAncestor->GetContent() != aDescendant->GetContent ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aAncestor->GetContent() != aDescendant->GetContent ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aAncestor->GetContent() != aDescendant->GetContent()" , "./../../../layout/generic/nsIFrame.cpp", 3033); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aAncestor->GetContent() != aDescendant->GetContent()" ")"); do { MOZ_CrashSequence(__null, 3033); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3034 | MOZ_ASSERT(aAncestor->Extend3DContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(aAncestor->Extend3DContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aAncestor->Extend3DContext ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aAncestor->Extend3DContext()", "./../../../layout/generic/nsIFrame.cpp" , 3034); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aAncestor->Extend3DContext()" ")"); do { MOZ_CrashSequence(__null, 3034); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3035 | |
| 3036 | nsIFrame* ancestor = aAncestor->FirstContinuation(); |
| 3037 | MOZ_ASSERT(ancestor->IsPrimaryFrame())do { static_assert( mozilla::detail::AssertionConditionType< decltype(ancestor->IsPrimaryFrame())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(ancestor->IsPrimaryFrame( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("ancestor->IsPrimaryFrame()", "./../../../layout/generic/nsIFrame.cpp" , 3037); AnnotateMozCrashReason("MOZ_ASSERT" "(" "ancestor->IsPrimaryFrame()" ")"); do { MOZ_CrashSequence(__null, 3037); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3038 | |
| 3039 | nsIFrame* frame; |
| 3040 | for (frame = aDescendant->GetClosestFlattenedTreeAncestorPrimaryFrame(); |
| 3041 | frame && ancestor != frame; |
| 3042 | frame = frame->GetClosestFlattenedTreeAncestorPrimaryFrame()) { |
| 3043 | if (!frame->Extend3DContext()) { |
| 3044 | return false; |
| 3045 | } |
| 3046 | } |
| 3047 | |
| 3048 | MOZ_ASSERT(frame == ancestor)do { static_assert( mozilla::detail::AssertionConditionType< decltype(frame == ancestor)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(frame == ancestor))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("frame == ancestor" , "./../../../layout/generic/nsIFrame.cpp", 3048); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "frame == ancestor" ")"); do { MOZ_CrashSequence (__null, 3048); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 3049 | return true; |
| 3050 | } |
| 3051 | |
| 3052 | static bool ItemParticipatesIn3DContext(nsIFrame* aAncestor, |
| 3053 | nsDisplayItem* aItem) { |
| 3054 | auto type = aItem->GetType(); |
| 3055 | const bool isContainer = type == DisplayItemType::TYPE_WRAP_LIST || |
| 3056 | type == DisplayItemType::TYPE_CONTAINER; |
| 3057 | |
| 3058 | if (isContainer && aItem->GetChildren()->Length() == 1) { |
| 3059 | // If the wraplist has only one child item, use the type of that item. |
| 3060 | type = aItem->GetChildren()->GetBottom()->GetType(); |
| 3061 | } |
| 3062 | |
| 3063 | if (type != DisplayItemType::TYPE_TRANSFORM && |
| 3064 | type != DisplayItemType::TYPE_PERSPECTIVE) { |
| 3065 | return false; |
| 3066 | } |
| 3067 | nsIFrame* transformFrame = aItem->Frame(); |
| 3068 | if (aAncestor->GetContent() == transformFrame->GetContent()) { |
| 3069 | return true; |
| 3070 | } |
| 3071 | return FrameParticipatesIn3DContext(aAncestor, transformFrame); |
| 3072 | } |
| 3073 | |
| 3074 | static void WrapSeparatorTransform(nsDisplayListBuilder* aBuilder, |
| 3075 | nsIFrame* aFrame, |
| 3076 | nsDisplayList* aNonParticipants, |
| 3077 | nsDisplayList* aParticipants, int aIndex, |
| 3078 | nsDisplayItem** aSeparator) { |
| 3079 | if (aNonParticipants->IsEmpty()) { |
| 3080 | return; |
| 3081 | } |
| 3082 | |
| 3083 | nsDisplayTransform* item = MakeDisplayItemWithIndex<nsDisplayTransform>( |
| 3084 | aBuilder, aFrame, aIndex, aNonParticipants, aBuilder->GetVisibleRect()); |
| 3085 | |
| 3086 | if (*aSeparator == nullptr && item) { |
| 3087 | *aSeparator = item; |
| 3088 | } |
| 3089 | |
| 3090 | aParticipants->AppendToTop(item); |
| 3091 | } |
| 3092 | |
| 3093 | static bool HitTestsCapturedElementsAtLivePosition(nsPresContext* aPc) { |
| 3094 | switch (StaticPrefs::dom_viewTransitions_hit_testing()) { |
| 3095 | case 0: |
| 3096 | return false; |
| 3097 | case 1: |
| 3098 | return true; |
| 3099 | default: |
| 3100 | return aPc->IsChrome(); |
| 3101 | } |
| 3102 | } |
| 3103 | |
| 3104 | // Try to compute a clip rect to bound the contents of the mask item |
| 3105 | // that will be built for |aMaskedFrame|. If we're not able to compute |
| 3106 | // one, return an empty Maybe. |
| 3107 | // The returned clip rect, if there is one, is relative to |aMaskedFrame|. |
| 3108 | // Bug 1958124: If this is inlined in |
| 3109 | // nsIFrame::BuildDisplayListForStackingContext on Win32, its variables enlarge |
| 3110 | // that function's stack frame, which is on a deeply recursive path that is |
| 3111 | // already up against the stack limit. Only masked frames reach this code, so |
| 3112 | // never inlining it on Win32 costs us nothing. |
| 3113 | #if defined(XP_WIN) && !defined(_WIN64) |
| 3114 | MOZ_NEVER_INLINE__attribute__((noinline)) |
| 3115 | #endif |
| 3116 | static Maybe<nsRect> ComputeClipForMaskItem( |
| 3117 | nsDisplayListBuilder* aBuilder, nsIFrame* aMaskedFrame, |
| 3118 | const SVGUtils::MaskUsage& aMaskUsage) { |
| 3119 | const nsStyleSVGReset* svgReset = aMaskedFrame->StyleSVGReset(); |
| 3120 | |
| 3121 | nsPoint offsetToUserSpace = |
| 3122 | nsLayoutUtils::ComputeOffsetToUserSpace(aBuilder, aMaskedFrame); |
| 3123 | int32_t devPixelRatio = aMaskedFrame->PresContext()->AppUnitsPerDevPixel(); |
| 3124 | gfxPoint devPixelOffsetToUserSpace = |
| 3125 | nsLayoutUtils::PointToGfxPoint(offsetToUserSpace, devPixelRatio); |
| 3126 | CSSToLayoutDeviceScale cssToDevScale = |
| 3127 | aMaskedFrame->PresContext()->CSSToDevPixelScale(); |
| 3128 | |
| 3129 | nsPoint toReferenceFrame; |
| 3130 | aBuilder->FindReferenceFrameFor(aMaskedFrame, &toReferenceFrame); |
| 3131 | |
| 3132 | Maybe<gfxRect> combinedClip; |
| 3133 | if (aMaskUsage.ShouldApplyBasicShapeOrPath()) { |
| 3134 | Maybe<Rect> result = |
| 3135 | CSSClipPathInstance::GetBoundingRectForBasicShapeOrPathClip( |
| 3136 | aMaskedFrame, svgReset->mClipPath); |
| 3137 | if (result) { |
| 3138 | combinedClip = Some(ThebesRect(*result)); |
| 3139 | } |
| 3140 | } else if (aMaskUsage.ShouldApplyClipPath()) { |
| 3141 | nsIFrame* firstFrame = |
| 3142 | nsLayoutUtils::FirstContinuationOrIBSplitSibling(aMaskedFrame); |
| 3143 | SVGClipPathFrame* clipPathFrame = nullptr; |
| 3144 | SVGObserverUtils::GetAndObserveClipPath(firstFrame, &clipPathFrame); |
| 3145 | MOZ_ASSERT(clipPathFrame, "ShouldApplyClipPath needs a clip path")do { static_assert( mozilla::detail::AssertionConditionType< decltype(clipPathFrame)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(clipPathFrame))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("clipPathFrame" " (" "ShouldApplyClipPath needs a clip path" ")", "./../../../layout/generic/nsIFrame.cpp" , 3145); AnnotateMozCrashReason("MOZ_ASSERT" "(" "clipPathFrame" ") (" "ShouldApplyClipPath needs a clip path" ")"); do { MOZ_CrashSequence (__null, 3145); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 3146 | gfxRect result = clipPathFrame |
| 3147 | ->GetBBoxForClipPathFrame( |
| 3148 | clipPathFrame->GetClipPathTransform(aMaskedFrame)) |
| 3149 | .ToThebesRect(); |
| 3150 | combinedClip = Some( |
| 3151 | ThebesRect((CSSRect::FromUnknownRect(ToRect(result)) * cssToDevScale) |
| 3152 | .ToUnknownRect())); |
| 3153 | // The clip path is in the user space of the first continuation, which is |
| 3154 | // where SVGIntegrationUtils paints it too. |
| 3155 | if (firstFrame != aMaskedFrame) { |
| 3156 | devPixelOffsetToUserSpace = nsLayoutUtils::PointToGfxPoint( |
| 3157 | nsLayoutUtils::ComputeOffsetToUserSpace(aBuilder, firstFrame), |
| 3158 | devPixelRatio); |
| 3159 | } |
| 3160 | } else { |
| 3161 | // The code for this case is adapted from ComputeMaskGeometry(). |
| 3162 | |
| 3163 | nsRect borderArea(toReferenceFrame, aMaskedFrame->GetSize()); |
| 3164 | borderArea -= offsetToUserSpace; |
| 3165 | |
| 3166 | // Use an infinite dirty rect to pass into nsCSSRendering:: |
| 3167 | // GetImageLayerClip() because we don't have an actual dirty rect to |
| 3168 | // pass in. This is fine because the only time GetImageLayerClip() will |
| 3169 | // not intersect the incoming dirty rect with something is in the "NoClip" |
| 3170 | // case, and we handle that specially. |
| 3171 | nsRect dirtyRect(nscoord_MIN / 2, nscoord_MIN / 2, nscoord_MAX, |
| 3172 | nscoord_MAX); |
| 3173 | |
| 3174 | nsIFrame* firstFrame = |
| 3175 | nsLayoutUtils::FirstContinuationOrIBSplitSibling(aMaskedFrame); |
| 3176 | nsTArray<SVGMaskFrame*> maskFrames; |
| 3177 | // XXX check return value? |
| 3178 | SVGObserverUtils::GetAndObserveMasks(firstFrame, &maskFrames); |
| 3179 | |
| 3180 | for (uint32_t i = 0; i < maskFrames.Length(); ++i) { |
| 3181 | gfxRect clipArea; |
| 3182 | if (maskFrames[i]) { |
| 3183 | clipArea = maskFrames[i]->GetMaskArea(aMaskedFrame); |
| 3184 | clipArea = ThebesRect( |
| 3185 | (CSSRect::FromUnknownRect(ToRect(clipArea)) * cssToDevScale) |
| 3186 | .ToUnknownRect()); |
| 3187 | } else { |
| 3188 | const auto& layer = svgReset->mMask.mLayers[i]; |
| 3189 | if (layer.mClip == StyleBackgroundClip::NoClip) { |
| 3190 | return Nothing(); |
| 3191 | } |
| 3192 | |
| 3193 | nsCSSRendering::ImageLayerClipState clipState; |
| 3194 | nsCSSRendering::GetImageLayerClip( |
| 3195 | layer, aMaskedFrame, *aMaskedFrame->StyleBorder(), borderArea, |
| 3196 | dirtyRect, false /* aWillPaintBorder */, devPixelRatio, &clipState); |
| 3197 | clipArea = clipState.mDirtyRectInDevPx; |
| 3198 | } |
| 3199 | combinedClip = UnionMaybeRects(combinedClip, Some(clipArea)); |
| 3200 | } |
| 3201 | } |
| 3202 | if (combinedClip) { |
| 3203 | // Convert to user space. |
| 3204 | *combinedClip += devPixelOffsetToUserSpace; |
| 3205 | |
| 3206 | // Round the clip out. In FrameLayerBuilder we round clips to nearest |
| 3207 | // pixels, and if we have a really thin clip here, that can cause the |
| 3208 | // clip to become empty if we didn't round out here. |
| 3209 | // The rounding happens in coordinates that are relative to the reference |
| 3210 | // frame, which matches what FrameLayerBuilder does. |
| 3211 | combinedClip->RoundOut(); |
| 3212 | |
| 3213 | // Convert to app units. |
| 3214 | nsRect result = |
| 3215 | nsLayoutUtils::RoundGfxRectToAppRect(*combinedClip, devPixelRatio); |
| 3216 | |
| 3217 | // The resulting clip is relative to the reference frame, but the caller |
| 3218 | // expects it to be relative to the masked frame, so adjust it. |
| 3219 | result -= toReferenceFrame; |
| 3220 | return Some(result); |
| 3221 | } |
| 3222 | return Nothing(); |
| 3223 | } |
| 3224 | |
| 3225 | struct AutoCheckBuilder { |
| 3226 | explicit AutoCheckBuilder(nsDisplayListBuilder* aBuilder) |
| 3227 | : mBuilder(aBuilder) { |
| 3228 | aBuilder->Check(); |
| 3229 | } |
| 3230 | |
| 3231 | ~AutoCheckBuilder() { mBuilder->Check(); } |
| 3232 | |
| 3233 | nsDisplayListBuilder* mBuilder; |
| 3234 | }; |
| 3235 | |
| 3236 | /** |
| 3237 | * Tries to reuse a top-level stacking context item from the previous paint. |
| 3238 | * Returns true if an item was reused, otherwise false. |
| 3239 | */ |
| 3240 | bool TryToReuseStackingContextItem(nsDisplayListBuilder* aBuilder, |
| 3241 | nsDisplayList* aList, nsIFrame* aFrame) { |
| 3242 | if (!aBuilder->IsForPainting() || !aBuilder->IsPartialUpdate() || |
| 3243 | aBuilder->InInvalidSubtree()) { |
| 3244 | return false; |
| 3245 | } |
| 3246 | |
| 3247 | if (aFrame->IsFrameModified() || aFrame->HasModifiedDescendants()) { |
| 3248 | return false; |
| 3249 | } |
| 3250 | |
| 3251 | auto& items = aFrame->DisplayItems(); |
| 3252 | auto* res = std::find_if( |
| 3253 | items.begin(), items.end(), |
| 3254 | [](nsDisplayItem* aItem) { return aItem->IsPreProcessed(); }); |
| 3255 | |
| 3256 | if (res == items.end()) { |
| 3257 | return false; |
| 3258 | } |
| 3259 | |
| 3260 | nsDisplayItem* container = *res; |
| 3261 | MOZ_ASSERT(container->Frame() == aFrame)do { static_assert( mozilla::detail::AssertionConditionType< decltype(container->Frame() == aFrame)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(container->Frame() == aFrame ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "container->Frame() == aFrame", "./../../../layout/generic/nsIFrame.cpp" , 3261); AnnotateMozCrashReason("MOZ_ASSERT" "(" "container->Frame() == aFrame" ")"); do { MOZ_CrashSequence(__null, 3261); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3262 | DL_LOGD("RDL - Found SC item %p (%s) (frame: %p)", container,do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Debug)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Debug, "RDL - Found SC item %p (%s) (frame: %p)", container, container->Name(), container->Frame()); } } while (0) |
| 3263 | container->Name(), container->Frame())do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Debug)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Debug, "RDL - Found SC item %p (%s) (frame: %p)", container, container->Name(), container->Frame()); } } while (0); |
| 3264 | |
| 3265 | aList->AppendToTop(container); |
| 3266 | aBuilder->ReuseDisplayItem(container); |
| 3267 | return true; |
| 3268 | } |
| 3269 | |
| 3270 | void nsIFrame::BuildDisplayListForStackingContext( |
| 3271 | nsDisplayListBuilder* aBuilder, nsDisplayList* aList, |
| 3272 | bool* aCreatedContainerItem) { |
| 3273 | #ifdef DEBUG1 |
| 3274 | DL_LOGV("BuildDisplayListForStackingContext (%p) <", this)do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Verbose)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Verbose, "BuildDisplayListForStackingContext (%p) <" , this); } } while (0); |
| 3275 | ScopeExit e( |
| 3276 | [this]() { DL_LOGV("> BuildDisplayListForStackingContext (%p)", this)do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Verbose)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Verbose, "> BuildDisplayListForStackingContext (%p)" , this); } } while (0); }); |
| 3277 | #endif |
| 3278 | |
| 3279 | AutoCheckBuilder check(aBuilder); |
| 3280 | |
| 3281 | if (aBuilder->IsReusingStackingContextItems() && |
| 3282 | TryToReuseStackingContextItem(aBuilder, aList, this)) { |
| 3283 | if (aCreatedContainerItem) { |
| 3284 | *aCreatedContainerItem = true; |
| 3285 | } |
| 3286 | return; |
| 3287 | } |
| 3288 | |
| 3289 | if (HasAnyStateBits(NS_FRAME_TOO_DEEP_IN_FRAME_TREE | |
| 3290 | NS_FRAME_IS_NONDISPLAY)) { |
| 3291 | return; |
| 3292 | } |
| 3293 | |
| 3294 | const auto& style = *Style(); |
| 3295 | const nsStyleDisplay* disp = style.StyleDisplay(); |
| 3296 | const nsStyleEffects* effects = style.StyleEffects(); |
| 3297 | EffectSet* effectSetForOpacity = |
| 3298 | EffectSet::GetForFrame(this, nsCSSPropertyIDSet::OpacityProperties()); |
| 3299 | // We can stop right away if this is a zero-opacity stacking context and |
| 3300 | // we're painting, and we're not animating opacity. |
| 3301 | bool needHitTestInfo = aBuilder->BuildCompositorHitTestInfo() && |
| 3302 | Style()->PointerEvents() != StylePointerEvents::None; |
| 3303 | bool opacityItemForEventsOnly = false; |
| 3304 | if (effects->IsTransparent() && aBuilder->IsForPainting() && |
| 3305 | !(disp->mWillChange.bits & StyleWillChangeBits::OPACITY) && |
| 3306 | !nsLayoutUtils::HasAnimationOfPropertySet( |
| 3307 | this, nsCSSPropertyIDSet::OpacityProperties(), effectSetForOpacity)) { |
| 3308 | if (needHitTestInfo) { |
| 3309 | opacityItemForEventsOnly = true; |
| 3310 | } else { |
| 3311 | return; |
| 3312 | } |
| 3313 | } |
| 3314 | |
| 3315 | // Root gets handled in |
| 3316 | // ScrollContainerFrame::MaybeCreateTopLayerAndWrapRootItems. |
| 3317 | const bool capturedByViewTransition = |
| 3318 | HasAnyStateBits(NS_FRAME_CAPTURED_IN_VIEW_TRANSITION) && |
| 3319 | !style.IsRootElementStyle(); |
| 3320 | |
| 3321 | // Do not need to build the display list of the captured frames for event |
| 3322 | // delivery (i.e. to determine if this frame is under the mouse position). |
| 3323 | // |
| 3324 | // Per spec, hit-testing is skipped because the element’s DOM location does |
| 3325 | // not correspond to where its contents are rendered, so we could just skip |
| 3326 | // the building of the display list for these frames, and then these APIs, |
| 3327 | // e.g. elementFromPoint(), will skip these frames as well. |
| 3328 | // https://drafts.csswg.org/css-view-transitions-1/#view-transition-stacking-layer |
| 3329 | // |
| 3330 | // dom.viewTransitions.hit-testing can make us hit-test them at their live |
| 3331 | // position instead, which chrome documents do by default so the browser UI |
| 3332 | // stays interactive while it animates. See |
| 3333 | // https://github.com/w3c/csswg-drafts/issues/10930 |
| 3334 | if (capturedByViewTransition && aBuilder->IsForEventDelivery() && |
| 3335 | !HitTestsCapturedElementsAtLivePosition(PresContext())) { |
| 3336 | return; |
| 3337 | } |
| 3338 | |
| 3339 | // For preserves3d, use the dirty rect already installed on the |
| 3340 | // builder, since aDirtyRect maybe distorted for transforms along |
| 3341 | // the chain. |
| 3342 | nsRect visibleRect = aBuilder->GetVisibleRect(); |
| 3343 | nsRect dirtyRect = aBuilder->GetDirtyRect(); |
| 3344 | |
| 3345 | // We build an opacity item if it's not going to be drawn by SVG content. |
| 3346 | // We could in principle skip creating an nsDisplayOpacity item if |
| 3347 | // nsDisplayOpacity::NeedsActiveLayer returns false and usingSVGEffects is |
| 3348 | // true (the nsDisplayFilter/nsDisplayMasksAndClipPaths could handle the |
| 3349 | // opacity). Since SVG has perf issues where we sometimes spend a lot of |
| 3350 | // time creating display list items that might be helpful. We'd need to |
| 3351 | // restore our mechanism to do that (changed in bug 1482403), and we'd |
| 3352 | // need to invalidate the frame if the value that would be return from |
| 3353 | // NeedsActiveLayer was to change, which we don't currently do. |
| 3354 | const bool useOpacity = |
| 3355 | HasVisualOpacity(disp, effects, effectSetForOpacity) && |
| 3356 | !SVGUtils::CanOptimizeOpacity(this); |
| 3357 | |
| 3358 | const bool isTransformed = IsTransformed(); |
| 3359 | const bool hasPerspective = isTransformed && HasPerspective(); |
| 3360 | const bool extend3DContext = |
| 3361 | Extend3DContext(disp, effects, effectSetForOpacity); |
| 3362 | const bool combines3DTransformWithAncestors = |
| 3363 | (extend3DContext || isTransformed) && Combines3DTransformWithAncestors(); |
| 3364 | |
| 3365 | UniquePtr<nsDisplayListBuilder::AutoPreserves3DContext> |
| 3366 | autoPreserves3DContext; |
| 3367 | if (extend3DContext && !combines3DTransformWithAncestors) { |
| 3368 | // Start a new preserves3d context to keep informations on |
| 3369 | // nsDisplayListBuilder. |
| 3370 | autoPreserves3DContext = |
| 3371 | std::make_unique<nsDisplayListBuilder::AutoPreserves3DContext>( |
| 3372 | aBuilder); |
| 3373 | // Save dirty rect on the builder to avoid being distorted for |
| 3374 | // multiple transforms along the chain. |
| 3375 | aBuilder->SavePreserves3DRect(); |
| 3376 | |
| 3377 | // We rebuild everything within preserve-3d and don't try |
| 3378 | // to retain, so override the dirty rect now. |
| 3379 | if (aBuilder->IsRetainingDisplayList()) { |
| 3380 | dirtyRect = visibleRect; |
| 3381 | aBuilder->SetDisablePartialUpdates(true); |
| 3382 | } |
| 3383 | } |
| 3384 | |
| 3385 | AutoTrackStackingContextBits stackingContextTracker(*aBuilder); |
| 3386 | aBuilder->ClearStackingContextBits(); |
| 3387 | |
| 3388 | nsRect visibleRectOutsideTransform = visibleRect; |
| 3389 | nsDisplayTransform::PrerenderInfo prerenderInfo; |
| 3390 | bool inTransform = aBuilder->IsInTransform(); |
| 3391 | if (isTransformed) { |
| 3392 | prerenderInfo = nsDisplayTransform::ShouldPrerenderTransformedContent( |
| 3393 | aBuilder, this, &visibleRect); |
| 3394 | |
| 3395 | switch (prerenderInfo.mDecision) { |
| 3396 | case nsDisplayTransform::PrerenderDecision::Full: |
| 3397 | case nsDisplayTransform::PrerenderDecision::Partial: |
| 3398 | dirtyRect = visibleRect; |
| 3399 | break; |
| 3400 | case nsDisplayTransform::PrerenderDecision::No: { |
| 3401 | // If we didn't prerender an animated frame in a preserve-3d context, |
| 3402 | // then we want disable async animations for the rest of the preserve-3d |
| 3403 | // (especially ancestors). |
| 3404 | if ((extend3DContext || combines3DTransformWithAncestors) && |
| 3405 | prerenderInfo.mHasAnimations) { |
| 3406 | aBuilder->SavePreserves3DAllowAsyncAnimation(false); |
| 3407 | } |
| 3408 | |
| 3409 | const nsRect overflow = InkOverflowRectRelativeToSelf(); |
| 3410 | if (overflow.IsEmpty() && !extend3DContext) { |
| 3411 | return; |
| 3412 | } |
| 3413 | |
| 3414 | // If we're in preserve-3d then grab the dirty rect that was given to |
| 3415 | // the root and transform using the combined transform. |
| 3416 | if (combines3DTransformWithAncestors) { |
| 3417 | visibleRect = dirtyRect = aBuilder->GetPreserves3DRect(); |
| 3418 | } |
| 3419 | |
| 3420 | const float appPerDev = PresContext()->AppUnitsPerDevPixel(); |
| 3421 | uint32_t flags = nsDisplayTransform::kTransformRectFlags & |
| 3422 | ~nsDisplayTransform::OFFSET_BY_ORIGIN; |
| 3423 | if (!hasPerspective) { |
| 3424 | flags &= ~nsDisplayTransform::INCLUDE_PERSPECTIVE; |
| 3425 | } |
| 3426 | if (!combines3DTransformWithAncestors) { |
| 3427 | flags &= ~nsDisplayTransform::INCLUDE_PRESERVE3D_ANCESTORS; |
| 3428 | } |
| 3429 | auto transform = nsDisplayTransform::GetResultingTransformMatrix( |
| 3430 | this, nsPoint(), appPerDev, flags); |
| 3431 | nsRect untransformedDirtyRect; |
| 3432 | if (nsDisplayTransform::UntransformRect(dirtyRect, overflow, transform, |
| 3433 | appPerDev, |
| 3434 | &untransformedDirtyRect)) { |
| 3435 | dirtyRect = untransformedDirtyRect; |
| 3436 | nsDisplayTransform::UntransformRect(visibleRect, overflow, transform, |
| 3437 | appPerDev, &visibleRect); |
| 3438 | } else { |
| 3439 | // This should only happen if the transform is singular, in which case |
| 3440 | // nothing is visible anyway |
| 3441 | dirtyRect.SetEmpty(); |
| 3442 | visibleRect.SetEmpty(); |
| 3443 | } |
| 3444 | } |
| 3445 | } |
| 3446 | inTransform = true; |
| 3447 | } else if (IsFixedPosContainingBlock()) { |
| 3448 | // Restict the building area to the overflow rect for these frames, since |
| 3449 | // RetainedDisplayListBuilder uses it to know if the size of the stacking |
| 3450 | // context changed. |
| 3451 | visibleRect.IntersectRect(visibleRect, InkOverflowRect()); |
| 3452 | dirtyRect.IntersectRect(dirtyRect, InkOverflowRect()); |
| 3453 | } |
| 3454 | |
| 3455 | bool hasOverrideDirtyRect = false; |
| 3456 | // If we're doing a partial build, we're not invalid and we're capable |
| 3457 | // of having an override building rect (stacking context and fixed pos |
| 3458 | // containing block), then we should assume we have one. |
| 3459 | // Either we have an explicit one, or nothing in our subtree changed and |
| 3460 | // we have an implicit empty rect. |
| 3461 | // |
| 3462 | // These conditions should match |CanStoreDisplayListBuildingRect()| in |
| 3463 | // RetainedDisplayListBuilder.cpp |
| 3464 | if (!aBuilder->IsReusingStackingContextItems() && |
| 3465 | aBuilder->IsPartialUpdate() && !aBuilder->InInvalidSubtree() && |
| 3466 | !IsFrameModified() && IsFixedPosContainingBlock() && |
| 3467 | !GetPrevContinuation() && !GetNextContinuation()) { |
| 3468 | dirtyRect = nsRect(); |
| 3469 | if (HasOverrideDirtyRegion()) { |
| 3470 | nsDisplayListBuilder::DisplayListBuildingData* data = |
| 3471 | GetProperty(nsDisplayListBuilder::DisplayListBuildingRect()); |
| 3472 | if (data) { |
| 3473 | dirtyRect = data->mDirtyRect.Intersect(visibleRect); |
| 3474 | hasOverrideDirtyRect = true; |
| 3475 | } |
| 3476 | } |
| 3477 | } |
| 3478 | |
| 3479 | const bool usingFilter = effects->HasFilters() && !style.IsRootElementStyle(); |
| 3480 | const SVGUtils::MaskUsage maskUsage = |
| 3481 | SVGUtils::DetermineMaskUsage(this, false); |
| 3482 | const bool usingMask = maskUsage.UsingMaskOrClipPath(); |
| 3483 | const bool usingSVGEffects = usingFilter || usingMask; |
| 3484 | |
| 3485 | const nsRect visibleRectOutsideSVGEffects = visibleRect; |
| 3486 | nsDisplayList hoistedScrollInfoItemsStorage; |
| 3487 | if (usingSVGEffects) { |
| 3488 | dirtyRect = |
| 3489 | SVGIntegrationUtils::GetRequiredSourceForInvalidArea(this, dirtyRect); |
| 3490 | visibleRect = |
| 3491 | SVGIntegrationUtils::GetRequiredSourceForInvalidArea(this, visibleRect); |
| 3492 | aBuilder->EnterSVGEffectsContents(this, &hoistedScrollInfoItemsStorage); |
| 3493 | } |
| 3494 | |
| 3495 | const bool useStickyPosition = |
| 3496 | disp->mPosition == StylePositionProperty::Sticky; |
| 3497 | bool shouldFlattenStickyItem = true; |
| 3498 | |
| 3499 | const bool useFixedPosition = |
| 3500 | disp->mPosition == StylePositionProperty::Fixed && |
| 3501 | aBuilder->IsPaintingToWindow() && !IsMenuPopupFrame() && |
| 3502 | (DisplayPortUtils::IsFixedPosFrameInDisplayPort(this) || |
| 3503 | BuilderHasScrolledClip(aBuilder)); |
| 3504 | |
| 3505 | if (capturedByViewTransition) { |
| 3506 | // Captured view transition elements must have their frames built regardless |
| 3507 | // of onscreen visibility so they can be snapshotted, since the snapshot can |
| 3508 | // itself be in view. We set visibleRect and dirtyRect to ensure the frame |
| 3509 | // and its descendants are painted. |
| 3510 | visibleRect = InkOverflowRectRelativeToSelf(); |
| 3511 | dirtyRect = InkOverflowRectRelativeToSelf(); |
| 3512 | } |
| 3513 | |
| 3514 | nsDisplayListBuilder::AutoBuildingDisplayList buildingDisplayList( |
| 3515 | aBuilder, this, visibleRect, dirtyRect, isTransformed); |
| 3516 | |
| 3517 | UpdateCurrentHitTestInfo(aBuilder, this); |
| 3518 | |
| 3519 | // Depending on the effects that are applied to this frame, we can create |
| 3520 | // multiple container display items and wrap them around our contents. |
| 3521 | // This enum lists all the potential container display items, in the order |
| 3522 | // outside to inside. |
| 3523 | enum class ContainerItemType : uint8_t { |
| 3524 | None = 0, |
| 3525 | FixedPosition, |
| 3526 | OwnLayerForTransformWithRoundedClip, |
| 3527 | Perspective, |
| 3528 | Transform, |
| 3529 | Filter, |
| 3530 | ViewTransitionCapture, |
| 3531 | }; |
| 3532 | |
| 3533 | // NOTE(emilio): The order of these RAII objects is quite subtle. |
| 3534 | nsDisplayListBuilder::AutoEnterViewTransitionCapture |
| 3535 | inViewTransitionCaptureSetter(aBuilder, capturedByViewTransition); |
| 3536 | RefPtr<const ActiveScrolledRoot> stickyASR = nullptr; |
| 3537 | nsDisplayListBuilder::AutoCurrentActiveScrolledRootSetter asrSetter(aBuilder); |
| 3538 | if (aBuilder->IsInViewTransitionCapture()) { |
| 3539 | // View transition contents shouldn't scroll along our ASR. They get |
| 3540 | // "pulled out" of the rendering (or when they don't, you can't scroll |
| 3541 | // anyways). |
| 3542 | asrSetter.SetCurrentActiveScrolledRoot(nullptr); |
| 3543 | } |
| 3544 | DisplayListClipState::AutoSaveRestore stickyItemClipState(aBuilder); |
| 3545 | if (useStickyPosition) { |
| 3546 | StickyScrollContainer* stickyScrollContainer = |
| 3547 | StickyScrollContainer::GetOrCreateForFrame(this); |
| 3548 | if (stickyScrollContainer && aBuilder->IsPaintingToWindow()) { |
| 3549 | if (!aBuilder->IsInViewTransitionCapture() && |
| 3550 | stickyScrollContainer->ScrollContainer() |
| 3551 | ->IsMaybeAsynchronouslyScrolled()) { |
| 3552 | shouldFlattenStickyItem = false; |
| 3553 | } |
| 3554 | // The flattening decision stored on the StickyScrollContainer is shared |
| 3555 | // by every sticky frame that it scrolls, so only store decisions which |
| 3556 | // apply to all of them. Being inside a view transition capture flattens |
| 3557 | // just the captured frame (which gets no display item at all), so |
| 3558 | // storing that decision would incorrectly flatten the container's other |
| 3559 | // sticky frames as well. |
| 3560 | if (!aBuilder->IsInViewTransitionCapture()) { |
| 3561 | stickyScrollContainer->SetShouldFlatten(shouldFlattenStickyItem); |
| 3562 | } |
| 3563 | } |
| 3564 | |
| 3565 | if (shouldFlattenStickyItem) { |
| 3566 | stickyASR = aBuilder->CurrentActiveScrolledRoot(); |
| 3567 | } else { |
| 3568 | stickyASR = aBuilder->GetOrCreateActiveScrolledRoot( |
| 3569 | aBuilder->CurrentActiveScrolledRoot(), this, |
| 3570 | ActiveScrolledRoot::ASRKind::Sticky); |
| 3571 | asrSetter.SetCurrentActiveScrolledRoot(stickyASR); |
| 3572 | stickyItemClipState.MaybeRemoveDisplayportClip(); |
| 3573 | } |
| 3574 | } |
| 3575 | |
| 3576 | nsDisplayListBuilder::AutoContainerASRTracker contASRTracker(aBuilder); |
| 3577 | |
| 3578 | auto cssClip = GetClipPropClipRect(disp, effects, GetSize()); |
| 3579 | auto ApplyClipProp = [&](DisplayListClipState::AutoSaveRestore& aClipState) { |
| 3580 | if (!cssClip) { |
| 3581 | return; |
| 3582 | } |
| 3583 | nsPoint offset = aBuilder->GetCurrentFrameOffsetToReferenceFrame(); |
| 3584 | aBuilder->IntersectDirtyRect(*cssClip); |
| 3585 | aBuilder->IntersectVisibleRect(*cssClip); |
| 3586 | aClipState.ClipContentDescendants(*cssClip + offset); |
| 3587 | }; |
| 3588 | |
| 3589 | // The CSS clip property is effectively inside the transform, but outside the |
| 3590 | // filters. So if we're not transformed we can apply it just here for |
| 3591 | // simplicity, instead of on each of the places that handle clipCapturedBy. |
| 3592 | DisplayListClipState::AutoSaveRestore untransformedCssClip(aBuilder); |
| 3593 | if (!isTransformed) { |
| 3594 | ApplyClipProp(untransformedCssClip); |
| 3595 | } |
| 3596 | |
| 3597 | // If there is a current clip, then depending on the container items we |
| 3598 | // create, different things can happen to it. Some container items simply |
| 3599 | // propagate the clip to their children and aren't clipped themselves. |
| 3600 | // But other container items, especially those that establish a different |
| 3601 | // geometry for their contents (e.g. transforms), capture the clip on |
| 3602 | // themselves and unset the clip for their contents. If we create more than |
| 3603 | // one of those container items, the clip will be captured on the outermost |
| 3604 | // one and the inner container items will be unclipped. |
| 3605 | ContainerItemType clipCapturedBy = ContainerItemType::None; |
| 3606 | if (capturedByViewTransition) { |
| 3607 | clipCapturedBy = isTransformed ? ContainerItemType::Transform |
| 3608 | : ContainerItemType::ViewTransitionCapture; |
| 3609 | } else if (useFixedPosition) { |
| 3610 | clipCapturedBy = ContainerItemType::FixedPosition; |
| 3611 | } else if (isTransformed) { |
| 3612 | const DisplayItemClipChain* currentClip = |
| 3613 | aBuilder->ClipState().GetCurrentCombinedClipChain(aBuilder); |
| 3614 | if ((hasPerspective || extend3DContext) && |
| 3615 | (currentClip && currentClip->HasRoundedCorners())) { |
| 3616 | // If we're creating an nsDisplayTransform item that is going to combine |
| 3617 | // its transform with its children (preserve-3d or perspective), then we |
| 3618 | // can't have an intermediate surface. Mask layers force an intermediate |
| 3619 | // surface, so if we're going to need both then create a separate |
| 3620 | // wrapping layer for the mask. |
| 3621 | clipCapturedBy = ContainerItemType::OwnLayerForTransformWithRoundedClip; |
| 3622 | } else if (hasPerspective) { |
| 3623 | clipCapturedBy = ContainerItemType::Perspective; |
| 3624 | } else { |
| 3625 | clipCapturedBy = ContainerItemType::Transform; |
| 3626 | } |
| 3627 | } else if (usingFilter) { |
| 3628 | clipCapturedBy = ContainerItemType::Filter; |
| 3629 | } |
| 3630 | |
| 3631 | DisplayListClipState::AutoSaveRestore clipState(aBuilder); |
| 3632 | if (clipCapturedBy != ContainerItemType::None) { |
| 3633 | clipState.Clear(); |
| 3634 | } |
| 3635 | |
| 3636 | DisplayListClipState::AutoSaveRestore transformedCssClip(aBuilder); |
| 3637 | if (isTransformed) { |
| 3638 | // FIXME(emilio, bug 1525159): In the case we have a both a transform _and_ |
| 3639 | // filters, this clips the input to the filters as well, which is not |
| 3640 | // correct (clipping by the `clip` property is supposed to happen after |
| 3641 | // applying the filter effects, per [1]. |
| 3642 | // |
| 3643 | // This is not a regression though, since we used to do that anyway before |
| 3644 | // bug 1514384, and even without the transform we get it wrong. |
| 3645 | // |
| 3646 | // [1]: https://drafts.fxtf.org/css-masking/#placement |
| 3647 | ApplyClipProp(transformedCssClip); |
| 3648 | } |
| 3649 | |
| 3650 | uint32_t numActiveScrollframesEncounteredBefore = |
| 3651 | aBuilder->GetNumActiveScrollframesEncountered(); |
| 3652 | |
| 3653 | nsDisplayListCollection set(aBuilder); |
| 3654 | Maybe<nsRect> clipForMask; |
| 3655 | |
| 3656 | { |
| 3657 | DisplayListClipState::AutoSaveRestore nestedClipState(aBuilder); |
| 3658 | nsDisplayListBuilder::AutoInTransformSetter inTransformSetter(aBuilder, |
| 3659 | inTransform); |
| 3660 | nsDisplayListBuilder::AutoEnterFilter filterASRSetter(aBuilder, |
| 3661 | usingFilter); |
| 3662 | nsDisplayListBuilder::AutoInEventsOnly inEventsSetter( |
| 3663 | aBuilder, opacityItemForEventsOnly); |
| 3664 | |
| 3665 | DisplayListClipState::AutoSaveRestore stickyItemNestedClipState(aBuilder); |
| 3666 | if (useStickyPosition && !shouldFlattenStickyItem) { |
| 3667 | stickyItemNestedClipState.MaybeRemoveDisplayportClip(); |
| 3668 | } |
| 3669 | |
| 3670 | // If we have a mask, compute a clip to bound the masked content. |
| 3671 | // This is necessary in case the content moves with an ancestor |
| 3672 | // ASR of the mask. |
| 3673 | // Don't do this if we also have a filter, because then the clip |
| 3674 | // would be applied before the filter, violating |
| 3675 | // https://www.w3.org/TR/filter-effects-1/#placement. |
| 3676 | // Filters are a containing block for fixed and absolute descendants, |
| 3677 | // so the masked content cannot move with an ancestor ASR. |
| 3678 | if (usingMask && !usingFilter) { |
| 3679 | clipForMask = ComputeClipForMaskItem(aBuilder, this, maskUsage); |
| 3680 | if (clipForMask) { |
| 3681 | aBuilder->IntersectDirtyRect(*clipForMask); |
| 3682 | aBuilder->IntersectVisibleRect(*clipForMask); |
| 3683 | nestedClipState.ClipContentDescendants( |
| 3684 | *clipForMask + aBuilder->GetCurrentFrameOffsetToReferenceFrame()); |
| 3685 | } |
| 3686 | } |
| 3687 | |
| 3688 | // extend3DContext also guarantees that applyAbsPosClipping and |
| 3689 | // usingSVGEffects are false We only modify the preserve-3d rect if we are |
| 3690 | // the top of a preserve-3d heirarchy |
| 3691 | if (extend3DContext) { |
| 3692 | // Mark these first so MarkAbsoluteFramesForDisplayList knows if we are |
| 3693 | // going to be forced to descend into frames. |
| 3694 | aBuilder->MarkPreserve3DFramesForDisplayList(this); |
| 3695 | } |
| 3696 | |
| 3697 | aBuilder->AdjustWindowDraggingRegion(this); |
| 3698 | |
| 3699 | MarkAbsoluteFramesForDisplayList(aBuilder); |
| 3700 | aBuilder->Check(); |
| 3701 | BuildDisplayList(aBuilder, set); |
| 3702 | // mBuiltDisplayList is observed only by painting-related tests (reftests |
| 3703 | // and paint-regression mochitests via nsIDOMWindowUtils), so record the |
| 3704 | // build only for painting display lists, not hit-testing, frame |
| 3705 | // visibility, or glyph-mask builds. |
| 3706 | if (aBuilder->IsForPainting()) { |
| 3707 | SetBuiltDisplayList(true); |
| 3708 | } |
| 3709 | aBuilder->Check(); |
| 3710 | aBuilder->DisplayCaret(this, set.Outlines()); |
| 3711 | |
| 3712 | // Blend modes are a real pain for retained display lists. We build a blend |
| 3713 | // container item if the built list contains any blend mode items within |
| 3714 | // the current stacking context. This can change without an invalidation |
| 3715 | // to the stacking context frame, or the blend mode frame (e.g. by moving |
| 3716 | // an intermediate frame). |
| 3717 | // When we gain/remove a blend container item, we need to mark this frame |
| 3718 | // as invalid and have the full display list for merging to track |
| 3719 | // the change correctly. |
| 3720 | // It seems really hard to track this in advance, as the bookkeeping |
| 3721 | // required to note which stacking contexts have blend descendants |
| 3722 | // is complex and likely to be buggy. |
| 3723 | // Instead we're doing the sad thing, detecting it afterwards, and just |
| 3724 | // repeating display list building if it changed. |
| 3725 | // We have to repeat building for the entire display list (or at least |
| 3726 | // the outer stacking context), since we need to mark this frame as invalid |
| 3727 | // to remove any existing content that isn't wrapped in the blend container, |
| 3728 | // and then we need to build content infront/behind the blend container |
| 3729 | // to get correct positioning during merging. |
| 3730 | if (aBuilder->ContainsBlendMode() && aBuilder->IsRetainingDisplayList()) { |
| 3731 | if (aBuilder->IsPartialUpdate()) { |
| 3732 | aBuilder->SetPartialBuildFailed(true); |
| 3733 | } else { |
| 3734 | aBuilder->SetDisablePartialUpdates(true); |
| 3735 | } |
| 3736 | } |
| 3737 | } |
| 3738 | |
| 3739 | if (aBuilder->IsBackgroundOnly()) { |
| 3740 | set.BlockBorderBackgrounds()->DeleteAll(aBuilder); |
| 3741 | set.Floats()->DeleteAll(aBuilder); |
| 3742 | set.Content()->DeleteAll(aBuilder); |
| 3743 | set.PositionedDescendants()->DeleteAll(aBuilder); |
| 3744 | set.Outlines()->DeleteAll(aBuilder); |
| 3745 | } |
| 3746 | |
| 3747 | if (hasOverrideDirtyRect && |
| 3748 | StaticPrefs::layout_display_list_show_rebuild_area()) { |
| 3749 | nsDisplaySolidColor* color = MakeDisplayItem<nsDisplaySolidColor>( |
| 3750 | aBuilder, this, |
| 3751 | dirtyRect + aBuilder->GetCurrentFrameOffsetToReferenceFrame(), |
| 3752 | NS_RGBA(255, 0, 0, 64)((nscolor)(((64) << 24) | ((0) << 16) | ((0) << 8) | (255)))); |
| 3753 | if (color) { |
| 3754 | color->SetOverrideZIndex(INT32_MAX(2147483647)); |
| 3755 | set.PositionedDescendants()->AppendToTop(color); |
| 3756 | } |
| 3757 | } |
| 3758 | |
| 3759 | nsIContent* content = GetContent(); |
| 3760 | if (!content) { |
| 3761 | content = PresContext()->Document()->GetRootElement(); |
| 3762 | } |
| 3763 | |
| 3764 | nsDisplayList resultList; |
| 3765 | set.SerializeWithCorrectZOrder(&resultList, content); |
| 3766 | |
| 3767 | // Get the ASR to use for the container items that we create here. |
| 3768 | const ActiveScrolledRoot* containerItemASR = contASRTracker.GetContainerASR(); |
| 3769 | |
| 3770 | bool createdContainer = false; |
| 3771 | const StackingContextBits localIsolationReasons = [&] { |
| 3772 | auto reasons = StackingContextBits::None; |
| 3773 | if (!GetParent()) { |
| 3774 | // We don't need to isolate the root frame. |
| 3775 | return reasons; |
| 3776 | } |
| 3777 | // Elements with a view-transition name also form a backdrop-root. Same for |
| 3778 | // masks / clip-path. |
| 3779 | // See https://www.w3.org/TR/css-view-transitions-1/#named-and-transitioning |
| 3780 | // and https://github.com/w3c/csswg-drafts/issues/11772 |
| 3781 | const bool hasViewTransitionName = |
| 3782 | style.StyleUIReset()->HasViewTransitionName() && |
| 3783 | !style.IsRootElementStyle(); |
| 3784 | if ((disp->mWillChange.bits & StyleWillChangeBits::BACKDROP_ROOT) || |
| 3785 | hasViewTransitionName || usingMask) { |
| 3786 | reasons |= StackingContextBits::ContainsBackdropFilter; |
| 3787 | } |
| 3788 | return reasons; |
| 3789 | }(); |
| 3790 | |
| 3791 | StackingContextBits currentIsolationReasons = |
| 3792 | localIsolationReasons & aBuilder->GetStackingContextBits(); |
| 3793 | bool isolated = false; |
| 3794 | auto MarkAsIsolated = [&] { |
| 3795 | isolated = true; |
| 3796 | currentIsolationReasons = StackingContextBits::None; |
| 3797 | }; |
| 3798 | auto ShouldForceIsolation = [&] { |
| 3799 | if (localIsolationReasons == StackingContextBits::None) { |
| 3800 | return false; |
| 3801 | } |
| 3802 | bool force = currentIsolationReasons != StackingContextBits::None; |
| 3803 | MarkAsIsolated(); |
| 3804 | return force; |
| 3805 | }; |
| 3806 | |
| 3807 | // If adding both a nsDisplayBlendContainer and a nsDisplayBlendMode to the |
| 3808 | // same list, the nsDisplayBlendContainer should be added first. This only |
| 3809 | // happens when the element creating this stacking context has mix-blend-mode |
| 3810 | // and also contains a child which has mix-blend-mode. |
| 3811 | // The nsDisplayBlendContainer must be added to the list first, so it does not |
| 3812 | // isolate the containing element blending as well. |
| 3813 | if (aBuilder->ContainsBlendMode()) { |
| 3814 | resultList.AppendToTop(nsDisplayBlendContainer::CreateForMixBlendMode( |
| 3815 | aBuilder, this, &resultList, containerItemASR, |
| 3816 | nsDisplayItem::ContainerASRType::AncestorOfContained)); |
| 3817 | createdContainer = true; |
| 3818 | MarkAsIsolated(); |
| 3819 | } |
| 3820 | |
| 3821 | // NOTE: When changing this condition make sure to tweak ScrollContainerFrame |
| 3822 | // as well. |
| 3823 | const bool usingBackdropFilter = effects->HasBackdropFilters() && |
| 3824 | IsVisibleForPainting() && |
| 3825 | !style.IsRootElementStyle(); |
| 3826 | if (usingBackdropFilter) { |
| 3827 | stackingContextTracker.AddToParent( |
| 3828 | StackingContextBits::ContainsBackdropFilter); |
| 3829 | nsRect backdropRect = |
| 3830 | GetRectRelativeToSelf() + aBuilder->ToReferenceFrame(this); |
| 3831 | resultList.AppendNewToTop<nsDisplayBackdropFilters>( |
| 3832 | aBuilder, this, &resultList, backdropRect, this); |
| 3833 | createdContainer = true; |
| 3834 | MarkAsIsolated(); |
| 3835 | } |
| 3836 | |
| 3837 | // If there are any SVG effects, wrap the list up in an SVG effects item |
| 3838 | // (which also handles CSS group opacity). Note that we create an SVG effects |
| 3839 | // item even if resultList is empty, since a filter can produce graphical |
| 3840 | // output even if the element being filtered wouldn't otherwise do so. |
| 3841 | if (usingSVGEffects) { |
| 3842 | MOZ_ASSERT(usingFilter || usingMask,do { static_assert( mozilla::detail::AssertionConditionType< decltype(usingFilter || usingMask)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(usingFilter || usingMask))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("usingFilter || usingMask" " (" "Beside filter & mask/clip-path, what else effect do we have?" ")", "./../../../layout/generic/nsIFrame.cpp", 3843); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "usingFilter || usingMask" ") (" "Beside filter & mask/clip-path, what else effect do we have?" ")"); do { MOZ_CrashSequence(__null, 3843); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 3843 | "Beside filter & mask/clip-path, what else effect do we have?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(usingFilter || usingMask)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(usingFilter || usingMask))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("usingFilter || usingMask" " (" "Beside filter & mask/clip-path, what else effect do we have?" ")", "./../../../layout/generic/nsIFrame.cpp", 3843); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "usingFilter || usingMask" ") (" "Beside filter & mask/clip-path, what else effect do we have?" ")"); do { MOZ_CrashSequence(__null, 3843); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3844 | |
| 3845 | if (clipCapturedBy == ContainerItemType::Filter) { |
| 3846 | clipState.Restore(); |
| 3847 | } |
| 3848 | // Revert to the post-filter dirty rect. |
| 3849 | aBuilder->SetVisibleRect(visibleRectOutsideSVGEffects); |
| 3850 | |
| 3851 | // Skip all filter effects while generating glyph mask. |
| 3852 | if (usingFilter && !aBuilder->IsForGenerateGlyphMask()) { |
| 3853 | /* List now emptied, so add the new list to the top. */ |
| 3854 | resultList.AppendNewToTop<nsDisplayFilters>(aBuilder, this, &resultList, |
| 3855 | this, usingBackdropFilter); |
| 3856 | createdContainer = true; |
Value stored to 'createdContainer' is never read | |
| 3857 | } |
| 3858 | |
| 3859 | if (usingMask) { |
| 3860 | // The mask should move with aBuilder->CurrentActiveScrolledRoot(), so |
| 3861 | // that's the ASR we prefer to use for the mask item. However, we can |
| 3862 | // only do this if the mask if clipped with respect to that ASR, because |
| 3863 | // an item always needs to have finite bounds with respect to its ASR. |
| 3864 | // If we weren't able to compute a clip for the mask, we fall back to |
| 3865 | // using containerItemASR, which is the lowest common ancestor clip of |
| 3866 | // the mask's contents. That's not entirely correct, but it satisfies |
| 3867 | // the base requirement of the ASR system (that items have finite bounds |
| 3868 | // wrt. their ASR). |
| 3869 | const ActiveScrolledRoot* maskASR = |
| 3870 | clipForMask.isSome() ? aBuilder->CurrentActiveScrolledRoot() |
| 3871 | : containerItemASR; |
| 3872 | /* List now emptied, so add the new list to the top. */ |
| 3873 | resultList.AppendNewToTop<nsDisplayMasksAndClipPaths>( |
| 3874 | aBuilder, this, &resultList, maskASR, |
| 3875 | clipForMask.isSome() |
| 3876 | ? nsDisplayItem::ContainerASRType::Constant |
| 3877 | : nsDisplayItem::ContainerASRType::AncestorOfContained, |
| 3878 | usingBackdropFilter, ShouldForceIsolation()); |
| 3879 | createdContainer = true; |
| 3880 | } |
| 3881 | |
| 3882 | // TODO(miko): We could probably create a wraplist here and avoid creating |
| 3883 | // it later in |BuildDisplayListForChild()|. |
| 3884 | createdContainer = false; |
| 3885 | |
| 3886 | // Also add the hoisted scroll info items. We need those for APZ scrolling |
| 3887 | // because nsDisplayMasksAndClipPaths items can't build active layers. |
| 3888 | aBuilder->ExitSVGEffectsContents(); |
| 3889 | resultList.AppendToTop(&hoistedScrollInfoItemsStorage); |
| 3890 | } |
| 3891 | |
| 3892 | // If the list is non-empty and there is CSS group opacity without SVG |
| 3893 | // effects, wrap it up in an opacity item. |
| 3894 | if (useOpacity) { |
| 3895 | const bool needsActiveOpacityLayer = |
| 3896 | nsDisplayOpacity::NeedsActiveLayer(this); |
| 3897 | resultList.AppendNewToTop<nsDisplayOpacity>( |
| 3898 | aBuilder, this, &resultList, containerItemASR, |
| 3899 | nsDisplayItem::ContainerASRType::AncestorOfContained, |
| 3900 | opacityItemForEventsOnly, needsActiveOpacityLayer, usingBackdropFilter, |
| 3901 | ShouldForceIsolation()); |
| 3902 | createdContainer = true; |
| 3903 | } |
| 3904 | |
| 3905 | // We build nsDisplayViewTransitionCapture here, and then use |
| 3906 | // nsDisplayTransform to wrap it, to make sure we create the correct transform |
| 3907 | // for the captured element and its descendants. This is necessary to make |
| 3908 | // sure our captured element doesn't become blurry when using scale() |
| 3909 | // transform. |
| 3910 | // |
| 3911 | // So the display list looks like this: |
| 3912 | // nsDisplayTransform // For the captured element if it is transformed |
| 3913 | // VTCapture // For the captured element |
| 3914 | // ... |
| 3915 | // Other display items // For the descendants of the captured element |
| 3916 | // ... |
| 3917 | // ... |
| 3918 | // |
| 3919 | // We intentionally use nsDisplayTransform to wrap the VTCapture (so it's |
| 3920 | // different from opacity display item) because nsDisplayTransform may push a |
| 3921 | // reference frame which creates a new coordinate system in WR. So it's just |
| 3922 | // like a separator between the VTCapture the outside, if it is transformed. |
| 3923 | if (capturedByViewTransition) { |
| 3924 | resultList.AppendNewToTop<nsDisplayViewTransitionCapture>( |
| 3925 | aBuilder, this, &resultList, nullptr, |
| 3926 | nsDisplayViewTransitionCapture::Kind::Element); |
| 3927 | createdContainer = true; |
| 3928 | MarkAsIsolated(); |
| 3929 | // We don't want the capture to be clipped, so we do this _after_ building |
| 3930 | // the wrapping item. |
| 3931 | if (clipCapturedBy == ContainerItemType::ViewTransitionCapture) { |
| 3932 | clipState.Restore(); |
| 3933 | } |
| 3934 | } |
| 3935 | |
| 3936 | // If we're going to apply a transformation and don't have preserve-3d set, |
| 3937 | // wrap everything in an nsDisplayTransform. If there's nothing in the list, |
| 3938 | // don't add anything. |
| 3939 | // |
| 3940 | // For the preserve-3d case we want to individually wrap every child in the |
| 3941 | // list with a separate nsDisplayTransform instead. When the child is already |
| 3942 | // an nsDisplayTransform, we can skip this step, as the computed transform |
| 3943 | // will already include our own. |
| 3944 | // |
| 3945 | // We also traverse into sublists created by nsDisplayWrapList, so that we |
| 3946 | // find all the correct children. |
| 3947 | // |
| 3948 | // We still need to create nsDisplayTransform to wrap the VT capture element |
| 3949 | // to make sure WR renders it properly if it is transformed as well. |
| 3950 | if (isTransformed) { |
| 3951 | if (extend3DContext) { |
| 3952 | // Install dummy nsDisplayTransform as a leaf containing |
| 3953 | // descendants not participating this 3D rendering context. |
| 3954 | nsDisplayList nonparticipants; |
| 3955 | nsDisplayList participants; |
| 3956 | int index = 1; |
| 3957 | |
| 3958 | nsDisplayItem* separator = nullptr; |
| 3959 | |
| 3960 | // TODO: This can be simplified: |participants| is just |resultList|. |
| 3961 | for (nsDisplayItem* item : resultList.TakeItems()) { |
| 3962 | if (ItemParticipatesIn3DContext(this, item) && |
| 3963 | !item->GetClip().HasClip()) { |
| 3964 | // The frame of this item participates the same 3D context. |
| 3965 | WrapSeparatorTransform(aBuilder, this, &nonparticipants, |
| 3966 | &participants, index++, &separator); |
| 3967 | |
| 3968 | participants.AppendToTop(item); |
| 3969 | } else { |
| 3970 | // The frame of the item doesn't participate the current |
| 3971 | // context, or has no transform. |
| 3972 | // |
| 3973 | // For items participating but not transformed, they are add |
| 3974 | // to nonparticipants to get a separator layer for handling |
| 3975 | // clips, if there is, on an intermediate surface. |
| 3976 | // \see ContainerLayer::DefaultComputeEffectiveTransforms(). |
| 3977 | nonparticipants.AppendToTop(item); |
| 3978 | } |
| 3979 | } |
| 3980 | WrapSeparatorTransform(aBuilder, this, &nonparticipants, &participants, |
| 3981 | index++, &separator); |
| 3982 | |
| 3983 | if (separator) { |
| 3984 | createdContainer = true; |
| 3985 | MarkAsIsolated(); |
| 3986 | } |
| 3987 | |
| 3988 | resultList.AppendToTop(&participants); |
| 3989 | } |
| 3990 | |
| 3991 | transformedCssClip.Restore(); |
| 3992 | if (clipCapturedBy == ContainerItemType::Transform) { |
| 3993 | // Restore clip state now so nsDisplayTransform is clipped properly. |
| 3994 | clipState.Restore(); |
| 3995 | } |
| 3996 | // Revert to the dirtyrect coming in from the parent, without our transform |
| 3997 | // taken into account. |
| 3998 | aBuilder->SetVisibleRect(visibleRectOutsideTransform); |
| 3999 | |
| 4000 | if (this != aBuilder->RootReferenceFrame()) { |
| 4001 | // Revert to the outer reference frame and offset because all display |
| 4002 | // items we create from now on are outside the transform. |
| 4003 | nsPoint toOuterReferenceFrame; |
| 4004 | const nsIFrame* outerReferenceFrame = |
| 4005 | aBuilder->FindReferenceFrameFor(GetParent(), &toOuterReferenceFrame); |
| 4006 | toOuterReferenceFrame += GetPosition(); |
| 4007 | |
| 4008 | buildingDisplayList.SetReferenceFrameAndCurrentOffset( |
| 4009 | outerReferenceFrame, toOuterReferenceFrame); |
| 4010 | } |
| 4011 | |
| 4012 | // We would like to block async animations for ancestors of ones not |
| 4013 | // prerendered in the preserve-3d tree. Now that we've finished processing |
| 4014 | // all descendants, update allowAsyncAnimation to take their prerender |
| 4015 | // state into account |
| 4016 | // FIXME: We don't block async animations for previous siblings because |
| 4017 | // their prerender decisions have been made. We may have to figure out a |
| 4018 | // better way to rollback their prerender decisions. |
| 4019 | // Alternatively we could not block animations for later siblings, and only |
| 4020 | // block them for ancestors of a blocked one. |
| 4021 | if ((extend3DContext || combines3DTransformWithAncestors) && |
| 4022 | prerenderInfo.CanUseAsyncAnimations() && |
| 4023 | !aBuilder->GetPreserves3DAllowAsyncAnimation()) { |
| 4024 | // aBuilder->GetPreserves3DAllowAsyncAnimation() means the inner or |
| 4025 | // previous silbing frames are allowed/disallowed for async animations. |
| 4026 | prerenderInfo.mDecision = nsDisplayTransform::PrerenderDecision::No; |
| 4027 | } |
| 4028 | |
| 4029 | // A transform does not form a Backdrop Root, so if a descendant has a |
| 4030 | // backdrop-filter this stacking context must not be used to resolve it, |
| 4031 | // even though WebRender may give it a surface (e.g. to apply a clip it |
| 4032 | // inherits). Unless we are forcing isolation, in which case we are the |
| 4033 | // backdrop root that the descendant should resolve from. |
| 4034 | const bool forceIsolation = ShouldForceIsolation(); |
| 4035 | const bool wrapsBackdropFilter = |
| 4036 | usingBackdropFilter || |
| 4037 | (!forceIsolation && aBuilder->ContainsBackdropFilter()); |
| 4038 | |
| 4039 | nsDisplayTransform* transformItem = MakeDisplayItem<nsDisplayTransform>( |
| 4040 | aBuilder, this, &resultList, visibleRect, prerenderInfo.mDecision, |
| 4041 | wrapsBackdropFilter, forceIsolation); |
| 4042 | if (transformItem) { |
| 4043 | resultList.AppendToTop(transformItem); |
| 4044 | createdContainer = true; |
| 4045 | |
| 4046 | if (numActiveScrollframesEncounteredBefore != |
| 4047 | aBuilder->GetNumActiveScrollframesEncountered()) { |
| 4048 | transformItem->SetContainsASRs(true); |
| 4049 | } |
| 4050 | |
| 4051 | if (hasPerspective) { |
| 4052 | transformItem->MarkWithAssociatedPerspective(); |
| 4053 | |
| 4054 | if (clipCapturedBy == ContainerItemType::Perspective) { |
| 4055 | clipState.Restore(); |
| 4056 | } |
| 4057 | resultList.AppendNewToTop<nsDisplayPerspective>(aBuilder, this, |
| 4058 | &resultList); |
| 4059 | createdContainer = true; |
| 4060 | } |
| 4061 | } |
| 4062 | if (clipCapturedBy == |
| 4063 | ContainerItemType::OwnLayerForTransformWithRoundedClip) { |
| 4064 | clipState.Restore(); |
| 4065 | resultList.AppendNewToTopWithIndex<nsDisplayOwnLayer>( |
| 4066 | aBuilder, this, |
| 4067 | /* aIndex = */ nsDisplayOwnLayer::OwnLayerForTransformWithRoundedClip, |
| 4068 | &resultList, aBuilder->CurrentActiveScrolledRoot(), |
| 4069 | nsDisplayItem::ContainerASRType::Constant, |
| 4070 | nsDisplayOwnLayerFlags::None, ScrollbarData{}, |
| 4071 | /* aForceActive = */ false, false); |
| 4072 | createdContainer = true; |
| 4073 | } |
| 4074 | } |
| 4075 | |
| 4076 | // If we have sticky positioning, wrap it in a sticky position item. |
| 4077 | if (useFixedPosition && !capturedByViewTransition) { |
| 4078 | if (clipCapturedBy == ContainerItemType::FixedPosition) { |
| 4079 | clipState.Restore(); |
| 4080 | } |
| 4081 | // The ASR for the fixed item should be the ASR of our containing block, |
| 4082 | // which has been set as the builder's current ASR, unless this frame is |
| 4083 | // invisible and we hadn't saved display item data for it. In that case, |
| 4084 | // we need to take the containerItemASR since we might have fixed children. |
| 4085 | // For WebRender, we want to the know what |containerItemASR| is for the |
| 4086 | // case where the fixed-pos item is not a "real" fixed-pos item (e.g. it's |
| 4087 | // nested inside a scrolling transform), so we stash that on the display |
| 4088 | // item as well. |
| 4089 | const ActiveScrolledRoot* fixedASR = ActiveScrolledRoot::PickAncestor( |
| 4090 | containerItemASR, aBuilder->CurrentActiveScrolledRoot()); |
| 4091 | const ActiveScrolledRoot* scrollTargetASR = |
| 4092 | containerItemASR ? containerItemASR->GetNearestScrollASR() : nullptr; |
| 4093 | resultList.AppendNewToTop<nsDisplayFixedPosition>( |
| 4094 | aBuilder, this, &resultList, fixedASR, |
| 4095 | nsDisplayItem::ContainerASRType::AncestorOfContained, scrollTargetASR, |
| 4096 | ShouldForceIsolation()); |
| 4097 | createdContainer = true; |
| 4098 | } else if (useStickyPosition && !capturedByViewTransition) { |
| 4099 | // For position:sticky, the clip needs to be applied both to the sticky |
| 4100 | // container item and to the contents. The container item needs the clip |
| 4101 | // because a scrolled clip needs to move independently from the sticky |
| 4102 | // contents, and the contents need the clip so that they have finite |
| 4103 | // clipped bounds with respect to the container item's ASR. The latter is |
| 4104 | // a little tricky in the case where the sticky item has both fixed and |
| 4105 | // non-fixed descendants, because that means that the sticky container |
| 4106 | // item's ASR is the ASR of the fixed descendant. |
| 4107 | // For WebRender display list building, though, we still want to know the |
| 4108 | // the ASR that the sticky container item would normally have, so we stash |
| 4109 | // that on the display item as the "container ASR" (i.e. the normal ASR of |
| 4110 | // the container item, excluding the special behaviour induced by fixed |
| 4111 | // descendants). |
| 4112 | const ActiveScrolledRoot* stickyItemASR = ActiveScrolledRoot::PickAncestor( |
| 4113 | containerItemASR, aBuilder->CurrentActiveScrolledRoot()); |
| 4114 | |
| 4115 | auto* stickyItem = MakeDisplayItem<nsDisplayStickyPosition>( |
| 4116 | aBuilder, this, &resultList, stickyItemASR, |
| 4117 | nsDisplayItem::ContainerASRType::AncestorOfContained, |
| 4118 | aBuilder->CurrentActiveScrolledRoot()); |
| 4119 | |
| 4120 | stickyItem->SetShouldFlatten(shouldFlattenStickyItem); |
| 4121 | |
| 4122 | resultList.AppendToTop(stickyItem); |
| 4123 | createdContainer = true; |
| 4124 | |
| 4125 | // If the sticky element is inside a filter, annotate the scroll frame that |
| 4126 | // scrolls the filter as having out-of-flow content inside a filter (this |
| 4127 | // inhibits paint skipping). |
| 4128 | if (aBuilder->GetFilterASR() && aBuilder->GetFilterASR() == stickyItemASR) { |
| 4129 | aBuilder->GetFilterASR() |
| 4130 | ->GetNearestScrollASR() |
| 4131 | ->ScrollFrame() |
| 4132 | ->SetHasOutOfFlowContentInsideFilter(); |
| 4133 | } |
| 4134 | } |
| 4135 | |
| 4136 | // If there's blending, wrap up the list in a blend-mode item. Note that |
| 4137 | // opacity can be applied before blending as the blend color is not affected |
| 4138 | // by foreground opacity (only background alpha). |
| 4139 | if (effects->mMixBlendMode != StyleBlend::Normal) { |
| 4140 | stackingContextTracker.AddToParent( |
| 4141 | StackingContextBits::ContainsMixBlendMode); |
| 4142 | resultList.AppendNewToTop<nsDisplayBlendMode>( |
| 4143 | aBuilder, this, &resultList, effects->mMixBlendMode, containerItemASR, |
| 4144 | nsDisplayItem::ContainerASRType::AncestorOfContained, false); |
| 4145 | createdContainer = true; |
| 4146 | MarkAsIsolated(); |
| 4147 | } |
| 4148 | |
| 4149 | if (!isolated && localIsolationReasons != StackingContextBits::None) { |
| 4150 | resultList.AppendToTop(nsDisplayBlendContainer::CreateForIsolation( |
| 4151 | aBuilder, this, &resultList, containerItemASR, |
| 4152 | nsDisplayItem::ContainerASRType::AncestorOfContained, |
| 4153 | ShouldForceIsolation())); |
| 4154 | createdContainer = true; |
| 4155 | } |
| 4156 | |
| 4157 | if (aBuilder->IsReusingStackingContextItems()) { |
| 4158 | if (resultList.IsEmpty()) { |
| 4159 | return; |
| 4160 | } |
| 4161 | |
| 4162 | nsDisplayItem* container = resultList.GetBottom(); |
| 4163 | if (resultList.Length() > 1 || container->Frame() != this) { |
| 4164 | container = MakeDisplayItem<nsDisplayContainer>( |
| 4165 | aBuilder, this, containerItemASR, |
| 4166 | nsDisplayItem::ContainerASRType::AncestorOfContained, &resultList); |
| 4167 | } else { |
| 4168 | MOZ_ASSERT(resultList.Length() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(resultList.Length() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(resultList.Length() == 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("resultList.Length() == 1" , "./../../../layout/generic/nsIFrame.cpp", 4168); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "resultList.Length() == 1" ")"); do { MOZ_CrashSequence (__null, 4168); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4169 | resultList.RemoveBottom(); |
| 4170 | } |
| 4171 | |
| 4172 | // Mark the outermost display item as reusable. These display items and |
| 4173 | // their chidren can be reused during the next paint if no ancestor or |
| 4174 | // descendant frames have been modified. |
| 4175 | if (!container->IsReusedItem()) { |
| 4176 | container->SetReusable(); |
| 4177 | } |
| 4178 | aList->AppendToTop(container); |
| 4179 | createdContainer = true; |
| 4180 | } else { |
| 4181 | aList->AppendToTop(&resultList); |
| 4182 | } |
| 4183 | |
| 4184 | if (aCreatedContainerItem) { |
| 4185 | *aCreatedContainerItem = createdContainer; |
| 4186 | } |
| 4187 | } |
| 4188 | |
| 4189 | static nsDisplayItem* WrapInWrapList(nsDisplayListBuilder* aBuilder, |
| 4190 | nsIFrame* aFrame, nsDisplayList* aList, |
| 4191 | const ActiveScrolledRoot* aContainerASR, |
| 4192 | bool aBuiltContainerItem = false) { |
| 4193 | nsDisplayItem* item = aList->GetBottom(); |
| 4194 | if (!item) { |
| 4195 | return nullptr; |
| 4196 | } |
| 4197 | |
| 4198 | // We need a wrap list if there are multiple items, or if the single |
| 4199 | // item has a different frame. This can change in a partial build depending |
| 4200 | // on which items we build, so we need to ensure that we don't transition |
| 4201 | // to/from a wrap list without invalidating correctly. |
| 4202 | bool needsWrapList = |
| 4203 | aList->Length() > 1 || item->Frame() != aFrame || item->GetChildren(); |
| 4204 | |
| 4205 | // If we have an explicit container item (that can't change without an |
| 4206 | // invalidation) or we're doing a full build and don't need a wrap list, then |
| 4207 | // we can skip adding one. |
| 4208 | if (aBuiltContainerItem || (!aBuilder->IsPartialUpdate() && !needsWrapList)) { |
| 4209 | MOZ_ASSERT(aList->Length() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aList->Length() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aList->Length() == 1))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("aList->Length() == 1" , "./../../../layout/generic/nsIFrame.cpp", 4209); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aList->Length() == 1" ")"); do { MOZ_CrashSequence (__null, 4209); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4210 | aList->RemoveBottom(); |
| 4211 | return item; |
| 4212 | } |
| 4213 | |
| 4214 | // If we're doing a partial build and we didn't need a wrap list |
| 4215 | // previously then we can try to work from there. |
| 4216 | if (aBuilder->IsPartialUpdate() && |
| 4217 | !aFrame->HasDisplayItem(uint32_t(DisplayItemType::TYPE_CONTAINER))) { |
| 4218 | // If we now need a wrap list, we must previously have had no display items |
| 4219 | // or a single one belonging to this frame. Mark the item itself as |
| 4220 | // discarded so that RetainedDisplayListBuilder uses the ones we just built. |
| 4221 | // We don't want to mark the frame as modified as that would invalidate |
| 4222 | // positioned descendants that might be outside of this list, and might not |
| 4223 | // have been rebuilt this time. |
| 4224 | if (needsWrapList) { |
| 4225 | DiscardOldItems(aFrame); |
| 4226 | } else { |
| 4227 | MOZ_ASSERT(aList->Length() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aList->Length() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aList->Length() == 1))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("aList->Length() == 1" , "./../../../layout/generic/nsIFrame.cpp", 4227); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aList->Length() == 1" ")"); do { MOZ_CrashSequence (__null, 4227); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4228 | aList->RemoveBottom(); |
| 4229 | return item; |
| 4230 | } |
| 4231 | } |
| 4232 | |
| 4233 | // The last case we could try to handle is when we previously had a wrap list, |
| 4234 | // but no longer need it. Unfortunately we can't differentiate this case from |
| 4235 | // a partial build where other children exist but we just didn't build them |
| 4236 | // this time. |
| 4237 | // TODO:RetainedDisplayListBuilder's merge phase has the full list and |
| 4238 | // could strip them out. |
| 4239 | |
| 4240 | return MakeDisplayItem<nsDisplayContainer>( |
| 4241 | aBuilder, aFrame, aContainerASR, |
| 4242 | nsDisplayItem::ContainerASRType::AncestorOfContained, aList); |
| 4243 | } |
| 4244 | |
| 4245 | /** |
| 4246 | * Check if a frame should be visited for building display list. |
| 4247 | */ |
| 4248 | static bool DescendIntoChild(nsDisplayListBuilder* aBuilder, |
| 4249 | const nsIFrame* aChild, const nsRect& aVisible, |
| 4250 | const nsRect& aDirty) { |
| 4251 | if (aChild->HasAnyStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO)) { |
| 4252 | return true; |
| 4253 | } |
| 4254 | |
| 4255 | // If the child is a scrollframe that we want to ignore, then we need |
| 4256 | // to descend into it because its scrolled child may intersect the dirty |
| 4257 | // area even if the scrollframe itself doesn't. |
| 4258 | if (aChild == aBuilder->GetIgnoreScrollFrame()) { |
| 4259 | return true; |
| 4260 | } |
| 4261 | |
| 4262 | // There are cases where the "ignore scroll frame" on the builder is not set |
| 4263 | // correctly, and so we additionally want to catch cases where the child is |
| 4264 | // a root scrollframe and we are ignoring scrolling on the viewport. |
| 4265 | if (aChild == aBuilder->GetPresShellIgnoreScrollFrame()) { |
| 4266 | return true; |
| 4267 | } |
| 4268 | |
| 4269 | nsRect overflow = aChild->InkOverflowRect(); |
| 4270 | |
| 4271 | // On mobile, there may be a dynamic toolbar. The root content document's |
| 4272 | // root scroll frame's ink overflow rect does not include the toolbar |
| 4273 | // height, but if the toolbar is hidden, we still want to be able to target |
| 4274 | // content underneath the toolbar, so expand the overflow rect here to |
| 4275 | // allow display list building to descend into the scroll frame. |
| 4276 | if (aBuilder->IsForEventDelivery() && |
| 4277 | aChild == aChild->PresShell()->GetRootScrollContainerFrame() && |
| 4278 | aChild->PresContext()->IsRootContentDocumentCrossProcess() && |
| 4279 | aChild->PresContext()->HasDynamicToolbar()) { |
| 4280 | overflow.SizeTo(nsLayoutUtils::ExpandHeightForDynamicToolbar( |
| 4281 | aChild->PresContext(), overflow.Size())); |
| 4282 | } |
| 4283 | |
| 4284 | if (aDirty.Intersects(overflow)) { |
| 4285 | return true; |
| 4286 | } |
| 4287 | |
| 4288 | if (aChild->ForceDescendIntoIfVisible() && aVisible.Intersects(overflow)) { |
| 4289 | return true; |
| 4290 | } |
| 4291 | |
| 4292 | if (aChild->IsTablePart()) { |
| 4293 | // Relative positioning and transforms can cause table parts to move, but we |
| 4294 | // will still paint the backgrounds for their ancestor parts under them at |
| 4295 | // their 'normal' position. That means that we must consider the overflow |
| 4296 | // rects at both positions. |
| 4297 | |
| 4298 | // We convert the overflow rect into the nsTableFrame's coordinate |
| 4299 | // space, applying the normal position offset at each step. Then we |
| 4300 | // compare that against the builder's cached dirty rect in table |
| 4301 | // coordinate space. |
| 4302 | const nsIFrame* f = aChild; |
| 4303 | nsRect normalPositionOverflowRelativeToTable = overflow; |
| 4304 | |
| 4305 | while (f->IsTablePart()) { |
| 4306 | normalPositionOverflowRelativeToTable += f->GetNormalPosition(); |
| 4307 | f = f->GetParent(); |
| 4308 | } |
| 4309 | |
| 4310 | nsDisplayTableBackgroundSet* tableBGs = aBuilder->GetTableBackgroundSet(); |
| 4311 | if (tableBGs && tableBGs->GetDirtyRect().Intersects( |
| 4312 | normalPositionOverflowRelativeToTable)) { |
| 4313 | return true; |
| 4314 | } |
| 4315 | } |
| 4316 | |
| 4317 | return false; |
| 4318 | } |
| 4319 | |
| 4320 | void nsIFrame::BuildDisplayListForSimpleChild(nsDisplayListBuilder* aBuilder, |
| 4321 | nsIFrame* aChild, |
| 4322 | const nsDisplayListSet& aLists) { |
| 4323 | // This is the shortcut for frames been handled along the common |
| 4324 | // path, the most common one of THE COMMON CASE mentioned later. |
| 4325 | MOZ_ASSERT(aChild->Type() != LayoutFrameType::Placeholder)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aChild->Type() != LayoutFrameType::Placeholder)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aChild->Type() != LayoutFrameType::Placeholder))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("aChild->Type() != LayoutFrameType::Placeholder" , "./../../../layout/generic/nsIFrame.cpp", 4325); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aChild->Type() != LayoutFrameType::Placeholder" ")"); do { MOZ_CrashSequence(__null, 4325); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4326 | MOZ_ASSERT(!aBuilder->GetSelectedFramesOnly() &&do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aBuilder->GetSelectedFramesOnly() && !aBuilder ->GetIncludeAllOutOfFlows())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!aBuilder->GetSelectedFramesOnly () && !aBuilder->GetIncludeAllOutOfFlows()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!aBuilder->GetSelectedFramesOnly() && !aBuilder->GetIncludeAllOutOfFlows()" " (" "It should be held for painting to window" ")", "./../../../layout/generic/nsIFrame.cpp" , 4328); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aBuilder->GetSelectedFramesOnly() && !aBuilder->GetIncludeAllOutOfFlows()" ") (" "It should be held for painting to window" ")"); do { MOZ_CrashSequence (__null, 4328); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 4327 | !aBuilder->GetIncludeAllOutOfFlows(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aBuilder->GetSelectedFramesOnly() && !aBuilder ->GetIncludeAllOutOfFlows())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!aBuilder->GetSelectedFramesOnly () && !aBuilder->GetIncludeAllOutOfFlows()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!aBuilder->GetSelectedFramesOnly() && !aBuilder->GetIncludeAllOutOfFlows()" " (" "It should be held for painting to window" ")", "./../../../layout/generic/nsIFrame.cpp" , 4328); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aBuilder->GetSelectedFramesOnly() && !aBuilder->GetIncludeAllOutOfFlows()" ") (" "It should be held for painting to window" ")"); do { MOZ_CrashSequence (__null, 4328); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 4328 | "It should be held for painting to window")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aBuilder->GetSelectedFramesOnly() && !aBuilder ->GetIncludeAllOutOfFlows())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!aBuilder->GetSelectedFramesOnly () && !aBuilder->GetIncludeAllOutOfFlows()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!aBuilder->GetSelectedFramesOnly() && !aBuilder->GetIncludeAllOutOfFlows()" " (" "It should be held for painting to window" ")", "./../../../layout/generic/nsIFrame.cpp" , 4328); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aBuilder->GetSelectedFramesOnly() && !aBuilder->GetIncludeAllOutOfFlows()" ") (" "It should be held for painting to window" ")"); do { MOZ_CrashSequence (__null, 4328); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4329 | MOZ_ASSERT(aChild->HasAnyStateBits(NS_FRAME_SIMPLE_DISPLAYLIST))do { static_assert( mozilla::detail::AssertionConditionType< decltype(aChild->HasAnyStateBits(NS_FRAME_SIMPLE_DISPLAYLIST ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aChild->HasAnyStateBits(NS_FRAME_SIMPLE_DISPLAYLIST )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aChild->HasAnyStateBits(NS_FRAME_SIMPLE_DISPLAYLIST)", "./../../../layout/generic/nsIFrame.cpp" , 4329); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aChild->HasAnyStateBits(NS_FRAME_SIMPLE_DISPLAYLIST)" ")"); do { MOZ_CrashSequence(__null, 4329); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4330 | |
| 4331 | const nsPoint offset = aChild->GetOffsetTo(this); |
| 4332 | const nsRect visible = aBuilder->GetVisibleRect() - offset; |
| 4333 | const nsRect dirty = aBuilder->GetDirtyRect() - offset; |
| 4334 | |
| 4335 | if (!DescendIntoChild(aBuilder, aChild, visible, dirty)) { |
| 4336 | DL_LOGV("Skipped frame %p", aChild)do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Verbose)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Verbose, "Skipped frame %p", aChild); } } while ( 0); |
| 4337 | return; |
| 4338 | } |
| 4339 | |
| 4340 | // Child cannot be transformed since it is not a stacking context. |
| 4341 | nsDisplayListBuilder::AutoBuildingDisplayList buildingForChild( |
| 4342 | aBuilder, aChild, visible, dirty, false); |
| 4343 | |
| 4344 | UpdateCurrentHitTestInfo(aBuilder, aChild); |
| 4345 | |
| 4346 | aChild->MarkAbsoluteFramesForDisplayList(aBuilder); |
| 4347 | aBuilder->AdjustWindowDraggingRegion(aChild); |
| 4348 | aBuilder->Check(); |
| 4349 | aChild->BuildDisplayList(aBuilder, aLists); |
| 4350 | if (aBuilder->IsForPainting()) { |
| 4351 | aChild->SetBuiltDisplayList(true); |
| 4352 | } |
| 4353 | aBuilder->Check(); |
| 4354 | aBuilder->DisplayCaret(aChild, aLists.Outlines()); |
| 4355 | } |
| 4356 | |
| 4357 | static bool ShouldSkipFrame(nsDisplayListBuilder* aBuilder, |
| 4358 | const nsIFrame* aFrame) { |
| 4359 | // If painting is restricted to just the background of the top level frame, |
| 4360 | // then we have nothing to do here. |
| 4361 | if (aBuilder->IsBackgroundOnly()) { |
| 4362 | return true; |
| 4363 | } |
| 4364 | if (aBuilder->IsForGenerateGlyphMask()) { |
| 4365 | if ((aFrame->IsLeaf() && !aFrame->IsTextFrame()) || |
| 4366 | aFrame->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW)) { |
| 4367 | // Only in-flow text frames are painted for background-clip: text mask |
| 4368 | // generation. |
| 4369 | return true; |
| 4370 | } |
| 4371 | } |
| 4372 | if (aBuilder->GetSelectedFramesOnly() && aFrame->IsLeaf() && |
| 4373 | !aFrame->IsSelected()) { |
| 4374 | return true; |
| 4375 | } |
| 4376 | static const nsFrameState skipFlags = NS_FRAME_TOO_DEEP_IN_FRAME_TREE | |
| 4377 | NS_FRAME_IS_NONDISPLAY | |
| 4378 | NS_FRAME_POSITION_VISIBILITY_HIDDEN; |
| 4379 | if (aFrame->HasAnyStateBits(skipFlags)) { |
| 4380 | return true; |
| 4381 | } |
| 4382 | // Checking mMozSubtreeHiddenOnlyVisually is relatively slow because it |
| 4383 | // involves loading more memory. It's only allowed in chrome sheets so let's |
| 4384 | // only support it in the parent process so we can mostly optimize this out in |
| 4385 | // content processes. |
| 4386 | return XRE_IsParentProcess() && |
| 4387 | aFrame->StyleUIReset()->mMozSubtreeHiddenOnlyVisually; |
| 4388 | } |
| 4389 | |
| 4390 | #ifdef ACCESSIBILITY1 |
| 4391 | // Bug 2025119: If this is inlined in nsIFrame::BuildDisplayListForChild on |
| 4392 | // Win32, we end up with crashes when there is deep recursion due to the |
| 4393 | // increased stack size caused by the additional variables here. Work around |
| 4394 | // this by having this code in its own function and ensuring it is never inlined |
| 4395 | // on Win32. |
| 4396 | # if defined(XP_WIN) && !defined(_WIN64) |
| 4397 | MOZ_NEVER_INLINE__attribute__((noinline)) |
| 4398 | # endif |
| 4399 | static void MaybeAddAccId(nsIFrame* aChildOrOutOfFlow, |
| 4400 | nsDisplayListBuilder* aBuilder, |
| 4401 | const nsDisplayListSet& aLists) { |
| 4402 | auto [innerWindowId, accId] = |
| 4403 | a11y::PdfStructTreeBuilder::GetAccId(aChildOrOutOfFlow); |
| 4404 | if (!innerWindowId) { |
| 4405 | return; |
| 4406 | } |
| 4407 | // When generating tagged PDF, associate this content with the correct |
| 4408 | // node in the structure tree. |
| 4409 | auto* item = MakeDisplayItem<nsDisplayAccessibleId>( |
| 4410 | aBuilder, aChildOrOutOfFlow, innerWindowId, accId); |
| 4411 | aLists.Content()->AppendToTop(item); |
| 4412 | } |
| 4413 | #endif |
| 4414 | |
| 4415 | void nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder* aBuilder, |
| 4416 | nsIFrame* aChild, |
| 4417 | const nsDisplayListSet& aLists, |
| 4418 | DisplayChildFlags aFlags) { |
| 4419 | AutoCheckBuilder check(aBuilder); |
| 4420 | MOZ_ASSERT(!HidesContent(), "Caller should check")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HidesContent())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!HidesContent()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!HidesContent()" " (" "Caller should check" ")", "./../../../layout/generic/nsIFrame.cpp" , 4420); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HidesContent()" ") (" "Caller should check" ")"); do { MOZ_CrashSequence(__null , 4420); __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 4421 | #ifdef DEBUG1 |
| 4422 | DL_LOGV("BuildDisplayListForChild (%p) <", aChild)do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Verbose)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Verbose, "BuildDisplayListForChild (%p) <", aChild ); } } while (0); |
| 4423 | ScopeExit e( |
| 4424 | [aChild]() { DL_LOGV("> BuildDisplayListForChild (%p)", aChild)do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Verbose)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Verbose, "> BuildDisplayListForChild (%p)", aChild ); } } while (0); }); |
| 4425 | #endif |
| 4426 | |
| 4427 | nsIFrame* child = aChild; |
| 4428 | auto* placeholder = child->IsPlaceholderFrame() |
| 4429 | ? static_cast<nsPlaceholderFrame*>(child) |
| 4430 | : nullptr; |
| 4431 | nsIFrame* childOrOutOfFlow = |
| 4432 | placeholder ? placeholder->GetOutOfFlowFrame() : child; |
| 4433 | if (!childOrOutOfFlow || ShouldSkipFrame(aBuilder, childOrOutOfFlow)) { |
| 4434 | return; |
| 4435 | } |
| 4436 | |
| 4437 | if (aBuilder->IsInLineClampAbsPosTraversal()) { |
| 4438 | const bool isOnForcedDescendPath = childOrOutOfFlow->HasAnyStateBits( |
| 4439 | NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO); |
| 4440 | |
| 4441 | if (!isOnForcedDescendPath) { |
| 4442 | return; |
| 4443 | } |
| 4444 | } |
| 4445 | |
| 4446 | // If we're generating a display list for printing, include Link items for |
| 4447 | // frames that correspond to HTML link elements so that we can have active |
| 4448 | // links in saved PDF output. Note that the state of "within a link" is |
| 4449 | // set on the display-list builder, such that all descendants of the link |
| 4450 | // element will generate display-list links, except for descendants entirely |
| 4451 | // covered by the link element's frame, since those would add nothing useful |
| 4452 | // to the final PDF. |
| 4453 | Maybe<nsDisplayListBuilder::Linkifier> linkifier; |
| 4454 | if (aBuilder->IsForPrinting()) { |
| 4455 | #ifdef ACCESSIBILITY1 |
| 4456 | MaybeAddAccId(childOrOutOfFlow, aBuilder, aLists); |
| 4457 | #endif |
| 4458 | if (StaticPrefs::print_save_as_pdf_links_enabled()) { |
| 4459 | linkifier.emplace(aBuilder, childOrOutOfFlow, aLists.Content()); |
| 4460 | linkifier->MaybeAppendLink(aBuilder, childOrOutOfFlow); |
| 4461 | } |
| 4462 | } |
| 4463 | |
| 4464 | nsIFrame* parent = childOrOutOfFlow->GetParent(); |
| 4465 | const auto* parentDisplay = parent->StyleDisplay(); |
| 4466 | const auto overflowClipAxes = |
| 4467 | parent->ShouldApplyOverflowClipping(parentDisplay); |
| 4468 | |
| 4469 | const bool isPaintingToWindow = aBuilder->IsPaintingToWindow(); |
| 4470 | const bool doingShortcut = |
| 4471 | isPaintingToWindow && |
| 4472 | child->HasAnyStateBits(NS_FRAME_SIMPLE_DISPLAYLIST) && |
| 4473 | // Animations may change the stacking context state. |
| 4474 | // ShouldApplyOverflowClipping is affected by the parent style, which does |
| 4475 | // not invalidate the NS_FRAME_SIMPLE_DISPLAYLIST bit. |
| 4476 | !(!overflowClipAxes.isEmpty() || child->MayHaveTransformAnimation() || |
| 4477 | child->MayHaveOpacityAnimation()); |
| 4478 | |
| 4479 | if (StaticPrefs::layout_css_scroll_anchoring_highlight()) { |
| 4480 | if (child->FirstContinuation()->IsScrollAnchor()) { |
| 4481 | nsRect bounds = child->GetContentRectRelativeToSelf() + |
| 4482 | aBuilder->ToReferenceFrame(child); |
| 4483 | nsDisplaySolidColor* color = MakeDisplayItem<nsDisplaySolidColor>( |
| 4484 | aBuilder, child, bounds, NS_RGBA(255, 0, 255, 64)((nscolor)(((64) << 24) | ((255) << 16) | ((0) << 8) | (255)))); |
| 4485 | if (color) { |
| 4486 | color->SetOverrideZIndex(INT32_MAX(2147483647)); |
| 4487 | aLists.PositionedDescendants()->AppendToTop(color); |
| 4488 | } |
| 4489 | } |
| 4490 | } |
| 4491 | |
| 4492 | if (doingShortcut) { |
| 4493 | BuildDisplayListForSimpleChild(aBuilder, child, aLists); |
| 4494 | return; |
| 4495 | } |
| 4496 | |
| 4497 | // dirty rect in child-relative coordinates |
| 4498 | NS_ASSERTION(aBuilder->GetCurrentFrame() == this, "Wrong coord space!")do { if (!(aBuilder->GetCurrentFrame() == this)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Wrong coord space!", "aBuilder->GetCurrentFrame() == this" , "./../../../layout/generic/nsIFrame.cpp", 4498); MOZ_PretendNoReturn (); } } while (0); |
| 4499 | const nsPoint offset = child->GetOffsetTo(this); |
| 4500 | nsRect visible = aBuilder->GetVisibleRect() - offset; |
| 4501 | nsRect dirty = aBuilder->GetDirtyRect() - offset; |
| 4502 | |
| 4503 | nsDisplayListBuilder::OutOfFlowDisplayData* savedOutOfFlowData = nullptr; |
| 4504 | if (placeholder) { |
| 4505 | if (placeholder->HasAnyStateBits(PLACEHOLDER_FOR_TOPLAYER)) { |
| 4506 | // If the out-of-flow frame is in the top layer, the viewport frame |
| 4507 | // will paint it. Skip it here. Note that, only out-of-flow frames |
| 4508 | // with this property should be skipped, because non-HTML elements |
| 4509 | // may stop their children from being out-of-flow. Those frames |
| 4510 | // should still be handled in the normal in-flow path. |
| 4511 | return; |
| 4512 | } |
| 4513 | |
| 4514 | child = childOrOutOfFlow; |
| 4515 | |
| 4516 | // If 'child' is a pushed out-of-flow then it's owned by a block that's not |
| 4517 | // an ancestor of the placeholder, and it will be painted by that block and |
| 4518 | // should not be painted through the placeholder. Also recheck |
| 4519 | // NS_FRAME_TOO_DEEP_IN_FRAME_TREE and NS_FRAME_IS_NONDISPLAY. |
| 4520 | static const nsFrameState skipFlags = |
| 4521 | (NS_FRAME_IS_PUSHED_OUT_OF_FLOW | NS_FRAME_TOO_DEEP_IN_FRAME_TREE | |
| 4522 | NS_FRAME_IS_NONDISPLAY); |
| 4523 | if (child->HasAnyStateBits(skipFlags) || nsLayoutUtils::IsPopup(child)) { |
| 4524 | return; |
| 4525 | } |
| 4526 | |
| 4527 | // For a transformed absolute containing block, if the abspos's placeholder |
| 4528 | // is in a different continuation's subtree, the abspos was already built |
| 4529 | // directly by DisplayAbsoluteFramesNotBuiltByPlaceholder() on its |
| 4530 | // containing block. Exclude inline frames because IB-split (bug 489100) |
| 4531 | // can cause the placeholder to live in a later IB-split sibling. |
| 4532 | if (parent->IsTransformed() && !parent->IsInlineFrame() && |
| 4533 | child->IsAbsolutelyPositioned() && |
| 4534 | !nsLayoutUtils::IsProperAncestorFrame(parent, placeholder)) { |
| 4535 | return; |
| 4536 | } |
| 4537 | |
| 4538 | MOZ_ASSERT(child->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW))do { static_assert( mozilla::detail::AssertionConditionType< decltype(child->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(child->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("child->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW)" , "./../../../layout/generic/nsIFrame.cpp", 4538); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "child->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW)" ")"); do { MOZ_CrashSequence(__null, 4538); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4539 | savedOutOfFlowData = nsDisplayListBuilder::GetOutOfFlowData(child); |
| 4540 | |
| 4541 | if (aBuilder->GetIncludeAllOutOfFlows()) { |
| 4542 | visible = child->InkOverflowRect(); |
| 4543 | dirty = child->InkOverflowRect(); |
| 4544 | } else if (savedOutOfFlowData) { |
| 4545 | visible = |
| 4546 | savedOutOfFlowData->GetVisibleRectForFrame(aBuilder, child, &dirty); |
| 4547 | } else { |
| 4548 | // The out-of-flow frame did not intersect the dirty area. We may still |
| 4549 | // need to traverse into it, since it may contain placeholders we need |
| 4550 | // to enter to reach other out-of-flow frames that are visible. |
| 4551 | visible.SetEmpty(); |
| 4552 | dirty.SetEmpty(); |
| 4553 | } |
| 4554 | } |
| 4555 | |
| 4556 | NS_ASSERTION(!child->IsPlaceholderFrame(),do { if (!(!child->IsPlaceholderFrame())) { NS_DebugBreak( NS_DEBUG_ASSERTION, "Should have dealt with placeholders already" , "!child->IsPlaceholderFrame()", "./../../../layout/generic/nsIFrame.cpp" , 4557); MOZ_PretendNoReturn(); } } while (0) |
| 4557 | "Should have dealt with placeholders already")do { if (!(!child->IsPlaceholderFrame())) { NS_DebugBreak( NS_DEBUG_ASSERTION, "Should have dealt with placeholders already" , "!child->IsPlaceholderFrame()", "./../../../layout/generic/nsIFrame.cpp" , 4557); MOZ_PretendNoReturn(); } } while (0); |
| 4558 | |
| 4559 | if (!DescendIntoChild(aBuilder, child, visible, dirty)) { |
| 4560 | DL_LOGV("Skipped frame %p", child)do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Verbose)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Verbose, "Skipped frame %p", child); } } while (0 ); |
| 4561 | return; |
| 4562 | } |
| 4563 | |
| 4564 | const bool isSVG = child->HasAnyStateBits(NS_FRAME_SVG_LAYOUT); |
| 4565 | |
| 4566 | // This flag is raised if the control flow strays off the common path. |
| 4567 | // The common path is the most common one of THE COMMON CASE mentioned later. |
| 4568 | bool awayFromCommonPath = !isPaintingToWindow; |
| 4569 | |
| 4570 | // true if this is a real or pseudo stacking context |
| 4571 | bool pseudoStackingContext = |
| 4572 | aFlags.contains(DisplayChildFlag::ForcePseudoStackingContext); |
| 4573 | |
| 4574 | if (!pseudoStackingContext && !isSVG && |
| 4575 | aFlags.contains(DisplayChildFlag::Inline) && |
| 4576 | !child->IsLineParticipant()) { |
| 4577 | // child is a non-inline frame in an inline context, i.e., |
| 4578 | // it acts like inline-block or inline-table. Therefore it is a |
| 4579 | // pseudo-stacking-context. |
| 4580 | pseudoStackingContext = true; |
| 4581 | } |
| 4582 | |
| 4583 | // Since we're now sure that we're adding this frame to the display list |
| 4584 | // (which means we're painting it, modulo occlusion), mark it as visible |
| 4585 | // within the displayport. |
| 4586 | if (isPaintingToWindow && child->TrackingVisibility() && |
| 4587 | child->IsVisibleForPainting()) { |
| 4588 | child->PresShell()->EnsureFrameInApproximatelyVisibleList(child); |
| 4589 | awayFromCommonPath = true; |
| 4590 | } |
| 4591 | |
| 4592 | // Child is composited if it's transformed, partially transparent, or has |
| 4593 | // SVG effects or a blend mode.. |
| 4594 | const nsStyleDisplay* disp = child->StyleDisplay(); |
| 4595 | const nsStyleEffects* effects = child->StyleEffects(); |
| 4596 | |
| 4597 | const bool isPositioned = disp->IsPositionedStyle(); |
| 4598 | const bool isStackingContext = |
| 4599 | aFlags.contains(DisplayChildFlag::ForceStackingContext) || |
| 4600 | child->IsStackingContext(disp, effects); |
| 4601 | |
| 4602 | if (pseudoStackingContext || isStackingContext || isPositioned || |
| 4603 | placeholder || (!isSVG && disp->IsFloating(child)) || |
| 4604 | (isSVG && effects->mClip.IsRect() && IsSVGContentWithCSSClip(child))) { |
| 4605 | pseudoStackingContext = true; |
| 4606 | awayFromCommonPath = true; |
| 4607 | } |
| 4608 | |
| 4609 | NS_ASSERTION(!isStackingContext || pseudoStackingContext,do { if (!(!isStackingContext || pseudoStackingContext)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Stacking contexts must also be pseudo-stacking-contexts" , "!isStackingContext || pseudoStackingContext", "./../../../layout/generic/nsIFrame.cpp" , 4610); MOZ_PretendNoReturn(); } } while (0) |
| 4610 | "Stacking contexts must also be pseudo-stacking-contexts")do { if (!(!isStackingContext || pseudoStackingContext)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Stacking contexts must also be pseudo-stacking-contexts" , "!isStackingContext || pseudoStackingContext", "./../../../layout/generic/nsIFrame.cpp" , 4610); MOZ_PretendNoReturn(); } } while (0); |
| 4611 | |
| 4612 | Maybe<nsDisplayListBuilder::AutoInLineClampAbsPosTraversal> |
| 4613 | buildAbsPosNormally; |
| 4614 | if (aBuilder->IsInLineClampAbsPosTraversal() && |
| 4615 | child->IsAbsolutelyPositioned() && savedOutOfFlowData) { |
| 4616 | buildAbsPosNormally.emplace(aBuilder, false); |
| 4617 | } |
| 4618 | |
| 4619 | nsDisplayListBuilder::AutoBuildingDisplayList buildingForChild( |
| 4620 | aBuilder, child, visible, dirty); |
| 4621 | |
| 4622 | UpdateCurrentHitTestInfo(aBuilder, child); |
| 4623 | |
| 4624 | DisplayListClipState::AutoClipMultiple clipState(aBuilder); |
| 4625 | nsDisplayListBuilder::AutoCurrentActiveScrolledRootSetter asrSetter(aBuilder); |
| 4626 | |
| 4627 | if (savedOutOfFlowData) { |
| 4628 | aBuilder->SetBuildingInvisibleItems(false); |
| 4629 | #ifdef DEBUG1 |
| 4630 | savedOutOfFlowData->CheckASR(aBuilder, child); |
| 4631 | #endif |
| 4632 | const ActiveScrolledRoot* asr = |
| 4633 | savedOutOfFlowData->mContainingBlockActiveScrolledRoot; |
| 4634 | if (child->IsAbsolutelyPositioned(disp)) { |
| 4635 | asr = DisplayPortUtils::GetASRForAbsPosFrame(child, asr, aBuilder); |
| 4636 | } |
| 4637 | |
| 4638 | if (aBuilder->IsInViewTransitionCapture()) { |
| 4639 | if (!savedOutOfFlowData->mContainingBlockInViewTransitionCapture) { |
| 4640 | clipState.Clear(); |
| 4641 | } else { |
| 4642 | clipState.SetClipChainForContainingBlockDescendants( |
| 4643 | savedOutOfFlowData->mContainingBlockClipChain); |
| 4644 | } |
| 4645 | asrSetter.SetCurrentActiveScrolledRoot(nullptr); |
| 4646 | } else { |
| 4647 | clipState.SetClipChainForContainingBlockDescendants( |
| 4648 | savedOutOfFlowData->mContainingBlockClipChain); |
| 4649 | asrSetter.SetCurrentActiveScrolledRoot(asr); |
| 4650 | asrSetter.SetCurrentScrollParentId(savedOutOfFlowData->mScrollParentId); |
| 4651 | } |
| 4652 | MOZ_ASSERT(awayFromCommonPath,do { static_assert( mozilla::detail::AssertionConditionType< decltype(awayFromCommonPath)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(awayFromCommonPath))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("awayFromCommonPath" " (" "It is impossible when savedOutOfFlowData is true" ")", "./../../../layout/generic/nsIFrame.cpp", 4653); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "awayFromCommonPath" ") (" "It is impossible when savedOutOfFlowData is true" ")"); do { MOZ_CrashSequence(__null, 4653); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 4653 | "It is impossible when savedOutOfFlowData is true")do { static_assert( mozilla::detail::AssertionConditionType< decltype(awayFromCommonPath)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(awayFromCommonPath))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("awayFromCommonPath" " (" "It is impossible when savedOutOfFlowData is true" ")", "./../../../layout/generic/nsIFrame.cpp", 4653); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "awayFromCommonPath" ") (" "It is impossible when savedOutOfFlowData is true" ")"); do { MOZ_CrashSequence(__null, 4653); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4654 | } else if (HasAnyStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO) && |
| 4655 | placeholder) { |
| 4656 | NS_ASSERTION(visible.IsEmpty(), "should have empty visible rect")do { if (!(visible.IsEmpty())) { NS_DebugBreak(NS_DEBUG_ASSERTION , "should have empty visible rect", "visible.IsEmpty()", "./../../../layout/generic/nsIFrame.cpp" , 4656); MOZ_PretendNoReturn(); } } while (0); |
| 4657 | // Every item we build from now until we descent into an out of flow that |
| 4658 | // does have saved out of flow data should be invisible. This state gets |
| 4659 | // restored when AutoBuildingDisplayList gets out of scope. |
| 4660 | aBuilder->SetBuildingInvisibleItems(true); |
| 4661 | |
| 4662 | // If we have nested out-of-flow frames and the outer one isn't visible |
| 4663 | // then we won't have stored clip data for it. We can just clear the clip |
| 4664 | // instead since we know we won't render anything, and the inner out-of-flow |
| 4665 | // frame will setup the correct clip for itself. |
| 4666 | clipState.SetClipChainForContainingBlockDescendants(nullptr); |
| 4667 | } |
| 4668 | |
| 4669 | // Setup clipping for the parent's overflow:clip, |
| 4670 | // or overflow:hidden on elements that don't support scrolling (and therefore |
| 4671 | // don't create nsHTML/XULScrollFrame). This clipping needs to not clip |
| 4672 | // anything directly rendered by the parent, only the rendering of its |
| 4673 | // children. |
| 4674 | // Don't use overflowClip to restrict the dirty rect, since some of the |
| 4675 | // descendants may not be clipped by it. Even if we end up with unnecessary |
| 4676 | // display items, they'll be pruned during ComputeVisibility. |
| 4677 | // |
| 4678 | // FIXME(emilio): Why can't we handle this more similarly to `clip` (on the |
| 4679 | // parent, rather than on the children)? Would ClipContentDescendants do what |
| 4680 | // we want? |
| 4681 | if (!overflowClipAxes.isEmpty()) { |
| 4682 | ApplyOverflowClipping(aBuilder, parent, overflowClipAxes, clipState); |
| 4683 | awayFromCommonPath = true; |
| 4684 | } |
| 4685 | |
| 4686 | nsDisplayList list; |
| 4687 | nsDisplayList extraPositionedDescendants; |
| 4688 | const ActiveScrolledRoot* wrapListASR; |
| 4689 | bool builtContainerItem = false; |
| 4690 | if (isStackingContext) { |
| 4691 | // True stacking context. |
| 4692 | // For stacking contexts, BuildDisplayListForStackingContext handles |
| 4693 | // clipping and MarkAbsoluteFramesForDisplayList. |
| 4694 | nsDisplayListBuilder::AutoContainerASRTracker contASRTracker(aBuilder); |
| 4695 | child->BuildDisplayListForStackingContext(aBuilder, &list, |
| 4696 | &builtContainerItem); |
| 4697 | wrapListASR = contASRTracker.GetContainerASR(); |
| 4698 | if (!aBuilder->IsReusingStackingContextItems() && |
| 4699 | aBuilder->GetCaretFrame() == child) { |
| 4700 | builtContainerItem = false; |
| 4701 | } |
| 4702 | } else { |
| 4703 | Maybe<nsRect> clipPropClip = |
| 4704 | child->GetClipPropClipRect(disp, effects, child->GetSize()); |
| 4705 | if (clipPropClip) { |
| 4706 | aBuilder->IntersectVisibleRect(*clipPropClip); |
| 4707 | aBuilder->IntersectDirtyRect(*clipPropClip); |
| 4708 | clipState.ClipContentDescendants(*clipPropClip + |
| 4709 | aBuilder->ToReferenceFrame(child)); |
| 4710 | awayFromCommonPath = true; |
| 4711 | } |
| 4712 | |
| 4713 | child->MarkAbsoluteFramesForDisplayList(aBuilder); |
| 4714 | if (aBuilder->IsForPainting()) { |
| 4715 | child->SetBuiltDisplayList(true); |
| 4716 | } |
| 4717 | |
| 4718 | // Some SVG frames might change opacity without invalidating the frame, so |
| 4719 | // exclude them from the fast-path. |
| 4720 | if (!awayFromCommonPath && !child->IsSVGFrame()) { |
| 4721 | // The shortcut is available for the child for next time. |
| 4722 | child->AddStateBits(NS_FRAME_SIMPLE_DISPLAYLIST); |
| 4723 | } |
| 4724 | |
| 4725 | if (!pseudoStackingContext) { |
| 4726 | // THIS IS THE COMMON CASE. |
| 4727 | // Not a pseudo or real stacking context. Do the simple thing and |
| 4728 | // return early. |
| 4729 | aBuilder->AdjustWindowDraggingRegion(child); |
| 4730 | aBuilder->Check(); |
| 4731 | child->BuildDisplayList(aBuilder, aLists); |
| 4732 | aBuilder->Check(); |
| 4733 | aBuilder->DisplayCaret(child, aLists.Outlines()); |
| 4734 | return; |
| 4735 | } |
| 4736 | |
| 4737 | // A pseudo-stacking context (e.g., a positioned element with z-index auto). |
| 4738 | // We allow positioned descendants of the child to escape to our parent |
| 4739 | // stacking context's positioned descendant list, because they might be |
| 4740 | // z-index:non-auto |
| 4741 | nsDisplayListCollection pseudoStack(aBuilder); |
| 4742 | |
| 4743 | aBuilder->AdjustWindowDraggingRegion(child); |
| 4744 | nsDisplayListBuilder::AutoContainerASRTracker contASRTracker(aBuilder); |
| 4745 | aBuilder->Check(); |
| 4746 | child->BuildDisplayList(aBuilder, pseudoStack); |
| 4747 | aBuilder->Check(); |
| 4748 | if (aBuilder->DisplayCaret(child, pseudoStack.Outlines())) { |
| 4749 | builtContainerItem = false; |
| 4750 | } |
| 4751 | wrapListASR = contASRTracker.GetContainerASR(); |
| 4752 | |
| 4753 | list.AppendToTop(pseudoStack.BorderBackground()); |
| 4754 | list.AppendToTop(pseudoStack.BlockBorderBackgrounds()); |
| 4755 | list.AppendToTop(pseudoStack.Floats()); |
| 4756 | list.AppendToTop(pseudoStack.Content()); |
| 4757 | list.AppendToTop(pseudoStack.Outlines()); |
| 4758 | extraPositionedDescendants.AppendToTop(pseudoStack.PositionedDescendants()); |
| 4759 | } |
| 4760 | |
| 4761 | buildingForChild.RestoreBuildingInvisibleItemsValue(); |
| 4762 | |
| 4763 | if (!list.IsEmpty()) { |
| 4764 | if (isPositioned || isStackingContext) { |
| 4765 | // Genuine stacking contexts, and positioned pseudo-stacking-contexts, |
| 4766 | // go in this level. |
| 4767 | nsDisplayItem* item = WrapInWrapList(aBuilder, child, &list, wrapListASR, |
| 4768 | builtContainerItem); |
| 4769 | if (isSVG) { |
| 4770 | aLists.Content()->AppendToTop(item); |
| 4771 | } else { |
| 4772 | aLists.PositionedDescendants()->AppendToTop(item); |
| 4773 | } |
| 4774 | } else if (!isSVG && disp->IsFloating(child)) { |
| 4775 | aLists.Floats()->AppendToTop( |
| 4776 | WrapInWrapList(aBuilder, child, &list, wrapListASR)); |
| 4777 | } else { |
| 4778 | aLists.Content()->AppendToTop(&list); |
| 4779 | } |
| 4780 | } |
| 4781 | // We delay placing the positioned descendants of positioned frames to here, |
| 4782 | // because in the absence of z-index this is the correct order for them. |
| 4783 | // This doesn't affect correctness because the positioned descendants list |
| 4784 | // is sorted by z-order and content in BuildDisplayListForStackingContext, |
| 4785 | // but it means that sort routine needs to do less work. |
| 4786 | aLists.PositionedDescendants()->AppendToTop(&extraPositionedDescendants); |
| 4787 | } |
| 4788 | |
| 4789 | void nsIFrame::MarkAbsoluteFramesForDisplayList( |
| 4790 | nsDisplayListBuilder* aBuilder) { |
| 4791 | if (const auto* absCB = GetAbsoluteContainingBlock()) { |
| 4792 | aBuilder->MarkFramesForDisplayList(this, absCB->GetChildList()); |
| 4793 | } |
| 4794 | } |
| 4795 | |
| 4796 | const nsIFrame* nsIFrame::GetGeneratedRootFrame() const { |
| 4797 | if (!IsGeneratedContentFrame()) { |
| 4798 | return nullptr; |
| 4799 | } |
| 4800 | const nsIFrame* generatedRoot = this; |
| 4801 | while (true) { |
| 4802 | auto* parent = nsLayoutUtils::GetParentOrPlaceholderFor(generatedRoot); |
| 4803 | if (!parent || !parent->IsGeneratedContentFrame()) { |
| 4804 | break; |
| 4805 | } |
| 4806 | generatedRoot = parent; |
| 4807 | } |
| 4808 | return generatedRoot; |
| 4809 | } |
| 4810 | |
| 4811 | nsIContent* nsIFrame::GetExplicitEventTargetContent( |
| 4812 | const WidgetEvent* aEvent /* = nullptr */) const { |
| 4813 | // Return the content as-is if this is not a generated content. |
| 4814 | if (!IsGeneratedContentFrame()) { |
| 4815 | return GetContent(); |
| 4816 | } |
| 4817 | // If the content is a generated content, it won't handle any events from the |
| 4818 | // DOM point of view. Therefore, let's return the parent of the generated |
| 4819 | // content. |
| 4820 | const nsIFrame* generatedRoot = GetGeneratedRootFrame(); |
| 4821 | MOZ_ASSERT(generatedRoot)do { static_assert( mozilla::detail::AssertionConditionType< decltype(generatedRoot)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(generatedRoot))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("generatedRoot", "./../../../layout/generic/nsIFrame.cpp", 4821); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "generatedRoot" ")"); do { MOZ_CrashSequence (__null, 4821); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4822 | // Return the non-generated ancestor. |
| 4823 | return generatedRoot->GetContent()->GetParent(); |
| 4824 | } |
| 4825 | |
| 4826 | nsIContent* nsIFrame::GetEventTargetContent( |
| 4827 | const mozilla::WidgetEvent* aEvent /* = nullptr */) const { |
| 4828 | return nsContentUtils::GetEventTargetContent( |
| 4829 | GetExplicitEventTargetContent(aEvent), aEvent); |
| 4830 | } |
| 4831 | |
| 4832 | void nsIFrame::FireDOMEvent(const nsAString& aDOMEventName, |
| 4833 | nsIContent* aContent) { |
| 4834 | nsIContent* target = aContent ? aContent : GetContent(); |
| 4835 | |
| 4836 | if (target) { |
| 4837 | auto asyncDispatcher = MakeRefPtr<AsyncEventDispatcher>( |
| 4838 | target, aDOMEventName, CanBubble::eYes, ChromeOnlyDispatch::eNo); |
| 4839 | DebugOnly<nsresult> rv = asyncDispatcher->PostDOMEvent(); |
| 4840 | NS_ASSERTION(NS_SUCCEEDED(rv), "AsyncEventDispatcher failed to dispatch")do { if (!(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1 ))))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "AsyncEventDispatcher failed to dispatch" , "NS_SUCCEEDED(rv)", "./../../../layout/generic/nsIFrame.cpp" , 4840); MOZ_PretendNoReturn(); } } while (0); |
| 4841 | } |
| 4842 | } |
| 4843 | |
| 4844 | nsresult nsIFrame::HandleEvent(nsPresContext* aPresContext, |
| 4845 | WidgetGUIEvent* aEvent, |
| 4846 | nsEventStatus* aEventStatus) { |
| 4847 | if (aEvent->mMessage == eMouseMove) { |
| 4848 | // XXX If the second argument of HandleDrag() is WidgetMouseEvent, |
| 4849 | // the implementation becomes simpler. |
| 4850 | return HandleDrag(aPresContext, aEvent, aEventStatus); |
| 4851 | } |
| 4852 | |
| 4853 | if (aEvent->mMessage == eContextMenu) { |
| 4854 | // A web page cannot cancel the context menu when the user has turned off |
| 4855 | // dom.event.contextmenu.enabled, and the menu opens anyway. |
| 4856 | const bool isMenuCanceled = |
| 4857 | *aEventStatus == nsEventStatus_eConsumeNoDefault && |
| 4858 | (Preferences::GetBool("dom.event.contextmenu.enabled", true) || |
| 4859 | (mContent && mContent->NodePrincipal()->IsSystemPrincipal())); |
| 4860 | // An untrusted event must not move the selection, since that is the |
| 4861 | // user's. |
| 4862 | WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent(); |
| 4863 | if (!isMenuCanceled && mouseEvent && mouseEvent->IsReal() && |
| 4864 | aEvent->IsTrusted()) { |
| 4865 | HandleContextMenuEventToSelectWordOrLink(*mouseEvent); |
| 4866 | // Be aware, this frame might have already been destroyed here. |
| 4867 | } |
| 4868 | return NS_OK; |
| 4869 | } |
| 4870 | |
| 4871 | if ((aEvent->mClass == eMouseEventClass && |
| 4872 | aEvent->AsMouseEvent()->mButton == MouseButton::ePrimary) || |
| 4873 | aEvent->mClass == eTouchEventClass) { |
| 4874 | if (aEvent->mMessage == eMouseDown || aEvent->mMessage == eTouchStart) { |
| 4875 | HandlePress(aPresContext, aEvent, aEventStatus); |
| 4876 | } else if (aEvent->mMessage == eMouseUp || aEvent->mMessage == eTouchEnd) { |
| 4877 | HandleRelease(aPresContext, aEvent, aEventStatus); |
| 4878 | } |
| 4879 | return NS_OK; |
| 4880 | } |
| 4881 | |
| 4882 | // When secondary button is down, we need to move selection to make users |
| 4883 | // possible to paste something at click point quickly. |
| 4884 | // When middle button is down, we need to just move selection and focus at |
| 4885 | // the clicked point. Note that even if middle click paste is not enabled, |
| 4886 | // Chrome moves selection at middle mouse button down. So, we should follow |
| 4887 | // the behavior for the compatibility. |
| 4888 | if (aEvent->mMessage == eMouseDown) { |
| 4889 | WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent(); |
| 4890 | if (mouseEvent && (mouseEvent->mButton == MouseButton::eSecondary || |
| 4891 | mouseEvent->mButton == MouseButton::eMiddle)) { |
| 4892 | if (*aEventStatus == nsEventStatus_eConsumeNoDefault) { |
| 4893 | return NS_OK; |
| 4894 | } |
| 4895 | return MoveCaretToEventPoint(aPresContext, mouseEvent, aEventStatus); |
| 4896 | } |
| 4897 | } |
| 4898 | |
| 4899 | return NS_OK; |
| 4900 | } |
| 4901 | |
| 4902 | nsresult nsIFrame::GetDataForTableSelection( |
| 4903 | const nsFrameSelection* aFrameSelection, mozilla::PresShell* aPresShell, |
| 4904 | WidgetMouseEvent* aMouseEvent, nsIContent** aParentContent, |
| 4905 | int32_t* aContentOffset, TableSelectionMode* aTarget) { |
| 4906 | if (!aFrameSelection || !aPresShell || !aMouseEvent || !aParentContent || |
| 4907 | !aContentOffset || !aTarget) { |
| 4908 | return NS_ERROR_NULL_POINTER; |
| 4909 | } |
| 4910 | |
| 4911 | *aParentContent = nullptr; |
| 4912 | *aContentOffset = 0; |
| 4913 | *aTarget = TableSelectionMode::None; |
| 4914 | |
| 4915 | int16_t displaySelection = aPresShell->GetSelectionFlags(); |
| 4916 | |
| 4917 | bool selectingTableCells = aFrameSelection->IsInTableSelectionMode(); |
| 4918 | |
| 4919 | // DISPLAY_ALL means we're in an editor. |
| 4920 | // If already in cell selection mode, |
| 4921 | // continue selecting with mouse drag or end on mouse up, |
| 4922 | // or when using shift key to extend block of cells |
| 4923 | // (Mouse down does normal selection unless Ctrl/Cmd is pressed) |
| 4924 | bool doTableSelection = |
| 4925 | displaySelection == nsISelectionDisplay::DISPLAY_ALL && |
| 4926 | selectingTableCells && |
| 4927 | (aMouseEvent->mMessage == eMouseMove || |
| 4928 | (aMouseEvent->mMessage == eMouseUp && |
| 4929 | aMouseEvent->mButton == MouseButton::ePrimary) || |
| 4930 | aMouseEvent->IsShift()); |
| 4931 | |
| 4932 | if (!doTableSelection) { |
| 4933 | // In Browser, special 'table selection' key must be pressed for table |
| 4934 | // selection or when just Shift is pressed and we're already in table/cell |
| 4935 | // selection mode |
| 4936 | #ifdef XP_MACOSX |
| 4937 | doTableSelection = aMouseEvent->IsMeta() || |
| 4938 | (aMouseEvent->IsShift() && selectingTableCells); |
| 4939 | #else |
| 4940 | doTableSelection = aMouseEvent->IsControl() || |
| 4941 | (aMouseEvent->IsShift() && selectingTableCells); |
| 4942 | #endif |
| 4943 | } |
| 4944 | if (!doTableSelection) { |
| 4945 | return NS_OK; |
| 4946 | } |
| 4947 | |
| 4948 | // Get the cell frame or table frame (or parent) of the current content node |
| 4949 | nsIFrame* frame = this; |
| 4950 | bool foundCell = false; |
| 4951 | bool foundTable = false; |
| 4952 | |
| 4953 | const Element* const independentSelectionLimiter = |
| 4954 | aFrameSelection->GetIndependentSelectionRootElement(); |
| 4955 | |
| 4956 | if (independentSelectionLimiter && |
| 4957 | !independentSelectionLimiter->Contains(GetContent())) { |
| 4958 | // If our content is not under the limiting node, stop the search right now. |
| 4959 | return NS_OK; |
| 4960 | } |
| 4961 | |
| 4962 | for (; frame; frame = frame->GetParent()) { |
| 4963 | // Check for a table cell by querying to a known CellFrame interface |
| 4964 | if (static_cast<nsITableCellLayout*>(do_QueryFrame(frame))) { |
| 4965 | foundCell = true; |
| 4966 | // TODO: If we want to use proximity to top or left border |
| 4967 | // for row and column selection, this is the place to do it |
| 4968 | break; |
| 4969 | } |
| 4970 | if (frame->IsTableWrapperFrame()) { |
| 4971 | // If not a cell, check for table. This will happen when the starting |
| 4972 | // frame is the table or child of a table, such as a row (we were |
| 4973 | // in-between cells or in table border). |
| 4974 | // TODO: How can we select row when along left table edge |
| 4975 | // or select column when along top edge? |
| 4976 | foundTable = true; |
| 4977 | break; |
| 4978 | } |
| 4979 | } |
| 4980 | |
| 4981 | if (!foundCell && !foundTable) { |
| 4982 | // We aren't in a cell or table. |
| 4983 | return NS_OK; |
| 4984 | } |
| 4985 | |
| 4986 | nsIContent* tableOrCellContent = frame->GetContent(); |
| 4987 | if (!tableOrCellContent) { |
| 4988 | return NS_OK; |
| 4989 | } |
| 4990 | |
| 4991 | if (independentSelectionLimiter && |
| 4992 | !independentSelectionLimiter->Contains(tableOrCellContent)) { |
| 4993 | return NS_OK; |
| 4994 | } |
| 4995 | |
| 4996 | nsCOMPtr<nsIContent> parentContent = tableOrCellContent->GetParent(); |
| 4997 | if (!parentContent) { |
| 4998 | return NS_ERROR_FAILURE; |
| 4999 | } |
| 5000 | |
| 5001 | const int32_t offset = |
| 5002 | parentContent->ComputeIndexOf_Deprecated(tableOrCellContent); |
| 5003 | // Not likely? |
| 5004 | if (offset < 0) { |
| 5005 | return NS_ERROR_FAILURE; |
| 5006 | } |
| 5007 | |
| 5008 | // Everything is OK -- set the return values |
| 5009 | parentContent.forget(aParentContent); |
| 5010 | |
| 5011 | *aContentOffset = offset; |
| 5012 | |
| 5013 | #if 0 |
| 5014 | if (selectRow) |
| 5015 | *aTarget = TableSelectionMode::Row; |
| 5016 | else if (selectColumn) |
| 5017 | *aTarget = TableSelectionMode::Column; |
| 5018 | else |
| 5019 | #endif |
| 5020 | if (foundCell) { |
| 5021 | *aTarget = TableSelectionMode::Cell; |
| 5022 | } else if (foundTable) { |
| 5023 | *aTarget = TableSelectionMode::Table; |
| 5024 | } |
| 5025 | |
| 5026 | return NS_OK; |
| 5027 | } |
| 5028 | |
| 5029 | static bool IsEditingHost(const nsIFrame* aFrame) { |
| 5030 | if (aFrame->Style()->GetPseudoType() == |
| 5031 | PseudoStyleType::MozTextControlEditingRoot) { |
| 5032 | return true; |
| 5033 | } |
| 5034 | nsIContent* content = aFrame->GetContent(); |
| 5035 | return content && content->IsEditingHost(); |
| 5036 | } |
| 5037 | |
| 5038 | mozilla::StyleUserSelect nsIFrame::UsedUserSelect( |
| 5039 | const nsIFrame* aFrame, nsIFrame::ForSelectionStart aType) { |
| 5040 | return UsedUserSelectRecurse(aFrame, aType).valueOr(StyleUserSelect::Text); |
| 5041 | } |
| 5042 | |
| 5043 | Maybe<mozilla::StyleUserSelect> nsIFrame::UsedUserSelectRecurse( |
| 5044 | const nsIFrame* aFrame, nsIFrame::ForSelectionStart aType) { |
| 5045 | if (aFrame->IsGeneratedContentFrame()) { |
| 5046 | return Some(StyleUserSelect::None); |
| 5047 | } |
| 5048 | |
| 5049 | // nsTableColFrame is inserted after nsTableRowGroupFrame and its content is |
| 5050 | // the corresponding <col> if one exists, or <colgroup> or <table> otherwise. |
| 5051 | // That means the frame tree order is different from the DOM tree order of |
| 5052 | // HTML table so that the caret navigation may return start of the <table> |
| 5053 | // after end of the last cell. Fortunately, it's invisible from user's |
| 5054 | // selection point of view. So, we should be able to treat it as unselectable. |
| 5055 | if (aFrame->IsTableColFrame()) { |
| 5056 | return Some(StyleUserSelect::None); |
| 5057 | } |
| 5058 | |
| 5059 | // Per https://drafts.csswg.org/css-ui-4/#content-selection: |
| 5060 | // |
| 5061 | // The used value is the same as the computed value, except: |
| 5062 | // |
| 5063 | // 1 - on editable elements where the used value is always 'contain' |
| 5064 | // regardless of the computed value |
| 5065 | // 2 - when the computed value is auto, in which case the used value is one |
| 5066 | // of the other values... |
| 5067 | // |
| 5068 | // See https://github.com/w3c/csswg-drafts/issues/3344 to see why we do this |
| 5069 | // at used-value time instead of at computed-value time. |
| 5070 | |
| 5071 | // Although the draft does not define that editable elements under an editing |
| 5072 | // host should ignore `user-select`, Chrome ignores `user-select:none` and |
| 5073 | // `user-select:all` and we've already considered as ignoring the |
| 5074 | // `user-select` according to this test: |
| 5075 | // https://searchfox.org/firefox-main/rev/6abddcb0a5076c3b888686ede6f4cf7d082460d3/dom/base/test/test_bug1101364.html#73-85 |
| 5076 | // https://searchfox.org/firefox-main/rev/4fd0fa7e5814c0b51f1dd075821988377bc56cc1/testing/web-platform/tests/css/css-ui/user-select-none-in-editable.html#23-24,32-36 |
| 5077 | // Therefore, we check aFrame->ContentIsEditable() instead of |
| 5078 | // IsEditingHost(aFrame). |
| 5079 | if (aFrame->IsTextInputFrame() || aFrame->ContentIsEditable()) { |
| 5080 | // We don't implement 'contain' itself, but we make 'text' behave as |
| 5081 | // 'contain' for contenteditable and <input> / <textarea> elements anyway so |
| 5082 | // this is ok. |
| 5083 | return Some(StyleUserSelect::Text); |
| 5084 | } |
| 5085 | |
| 5086 | auto style = aFrame->Style()->UserSelect(); |
| 5087 | if (style != StyleUserSelect::Auto) { |
| 5088 | return Some(style); |
| 5089 | } |
| 5090 | |
| 5091 | const auto IsButton = [](const nsIFrame* aFrame) { |
| 5092 | const auto* content = aFrame->GetContent(); |
| 5093 | if (!content) { |
| 5094 | return false; |
| 5095 | } |
| 5096 | return content->IsAnyOfHTMLElements(nsGkAtoms::button); |
| 5097 | }; |
| 5098 | |
| 5099 | auto* parent = nsLayoutUtils::GetParentOrPlaceholderFor(aFrame); |
| 5100 | const auto parentResult = |
| 5101 | parent ? UsedUserSelectRecurse(parent, aType) : Nothing{}; |
| 5102 | if (parentResult.valueOr(StyleUserSelect::Auto) != StyleUserSelect::None && |
| 5103 | aType == nsIFrame::ForSelectionStart::Yes && IsButton(aFrame)) { |
| 5104 | // If the parent did not force our hands, we want non-`contenteditable` |
| 5105 | // buttons to be clickable without accidentally selecting the text within |
| 5106 | // it, but still allow selection that originates outside of it. |
| 5107 | return Some(StyleUserSelect::None); |
| 5108 | } |
| 5109 | return parentResult; |
| 5110 | } |
| 5111 | |
| 5112 | bool nsIFrame::IsSelectable(StyleUserSelect* aSelectStyle) const { |
| 5113 | auto style = UsedUserSelect(this, ForSelectionStart::No); |
| 5114 | if (aSelectStyle) { |
| 5115 | *aSelectStyle = style; |
| 5116 | } |
| 5117 | return style != StyleUserSelect::None; |
| 5118 | } |
| 5119 | |
| 5120 | bool nsIFrame::ShouldPaintNormalSelection() const { |
| 5121 | if (IsSelectable()) { |
| 5122 | // NOTE: Ideally, we should return false if display selection is "OFF". |
| 5123 | // However, here is a hot path at painting. Therefore, it should be checked |
| 5124 | // before and we shouldn't need to check it. |
| 5125 | return true; |
| 5126 | } |
| 5127 | // If we're not selectable by user, we should paint selection only while the |
| 5128 | // normal selection is styled as "attention" by "Find in Page" or something. |
| 5129 | return GetDisplaySelection() == nsISelectionController::SELECTION_ATTENTION; |
| 5130 | } |
| 5131 | |
| 5132 | bool nsIFrame::ShouldHaveLineIfEmpty() const { |
| 5133 | switch (Style()->GetPseudoType()) { |
| 5134 | case PseudoStyleType::NotPseudo: |
| 5135 | break; |
| 5136 | case PseudoStyleType::MozScrolledContent: |
| 5137 | return GetParent()->ShouldHaveLineIfEmpty(); |
| 5138 | default: |
| 5139 | return false; |
| 5140 | } |
| 5141 | return IsInputButtonControlFrame() || IsEditingHost(this); |
| 5142 | } |
| 5143 | |
| 5144 | /** |
| 5145 | * Handles the Mouse Press Event for the frame |
| 5146 | */ |
| 5147 | NS_IMETHODIMPnsresult |
| 5148 | nsIFrame::HandlePress(nsPresContext* aPresContext, WidgetGUIEvent* aEvent, |
| 5149 | nsEventStatus* aEventStatus) { |
| 5150 | NS_ENSURE_ARG_POINTER(aEventStatus)do { if ((__builtin_expect(!!(!(aEventStatus)), 0))) { NS_DebugBreak (NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aEventStatus" ") failed" , nullptr, "./../../../layout/generic/nsIFrame.cpp", 5150); return NS_ERROR_INVALID_POINTER; } } while (false); |
| 5151 | if (nsEventStatus_eConsumeNoDefault == *aEventStatus) { |
| 5152 | return NS_OK; |
| 5153 | } |
| 5154 | |
| 5155 | NS_ENSURE_ARG_POINTER(aEvent)do { if ((__builtin_expect(!!(!(aEvent)), 0))) { NS_DebugBreak (NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aEvent" ") failed", nullptr , "./../../../layout/generic/nsIFrame.cpp", 5155); return NS_ERROR_INVALID_POINTER ; } } while (false); |
| 5156 | if (aEvent->mClass == eTouchEventClass) { |
| 5157 | return NS_OK; |
| 5158 | } |
| 5159 | |
| 5160 | return MoveCaretToEventPoint(aPresContext, aEvent->AsMouseEvent(), |
| 5161 | aEventStatus); |
| 5162 | } |
| 5163 | |
| 5164 | nsresult nsIFrame::MoveCaretToEventPoint(nsPresContext* aPresContext, |
| 5165 | WidgetMouseEvent* aMouseEvent, |
| 5166 | nsEventStatus* aEventStatus) { |
| 5167 | MOZ_ASSERT(aPresContext)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aPresContext)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aPresContext))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aPresContext", "./../../../layout/generic/nsIFrame.cpp" , 5167); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPresContext" ")"); do { MOZ_CrashSequence(__null, 5167); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5168 | MOZ_ASSERT(aMouseEvent)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aMouseEvent)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aMouseEvent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aMouseEvent", "./../../../layout/generic/nsIFrame.cpp" , 5168); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aMouseEvent" ")"); do { MOZ_CrashSequence(__null, 5168); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5169 | MOZ_ASSERT(aMouseEvent->mMessage == eMouseDown)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aMouseEvent->mMessage == eMouseDown)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(aMouseEvent->mMessage == eMouseDown))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aMouseEvent->mMessage == eMouseDown" , "./../../../layout/generic/nsIFrame.cpp", 5169); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aMouseEvent->mMessage == eMouseDown" ")" ); do { MOZ_CrashSequence(__null, 5169); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5170 | MOZ_ASSERT(aEventStatus)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aEventStatus)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aEventStatus))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aEventStatus", "./../../../layout/generic/nsIFrame.cpp" , 5170); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aEventStatus" ")"); do { MOZ_CrashSequence(__null, 5170); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5171 | MOZ_ASSERT(nsEventStatus_eConsumeNoDefault != *aEventStatus)do { static_assert( mozilla::detail::AssertionConditionType< decltype(nsEventStatus_eConsumeNoDefault != *aEventStatus)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(nsEventStatus_eConsumeNoDefault != *aEventStatus))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("nsEventStatus_eConsumeNoDefault != *aEventStatus" , "./../../../layout/generic/nsIFrame.cpp", 5171); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "nsEventStatus_eConsumeNoDefault != *aEventStatus" ")"); do { MOZ_CrashSequence(__null, 5171); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5172 | |
| 5173 | mozilla::PresShell* presShell = aPresContext->GetPresShell(); |
| 5174 | if (!presShell) { |
| 5175 | return NS_ERROR_FAILURE; |
| 5176 | } |
| 5177 | |
| 5178 | // We often get out of sync state issues with mousedown events that |
| 5179 | // get interrupted by alerts/dialogs. |
| 5180 | // Check with the ESM to see if we should process this one |
| 5181 | EventStateManager* const esm = aPresContext->EventStateManager(); |
| 5182 | if (!esm->EventStatusOK(aMouseEvent)) { |
| 5183 | return NS_OK; |
| 5184 | } |
| 5185 | |
| 5186 | if (nsIContent* dragGestureContent = esm->GetTrackingDragGestureContent()) { |
| 5187 | // When the current tracked dragging gesture is different than this frame, |
| 5188 | // it means this frame was being dragged, however it got moved/destroyed. So |
| 5189 | // we should consider the drag is still happening, so return early here. |
| 5190 | // Additionally, when dragGestureContent is a `Text` and the text frame is |
| 5191 | // reframed by a preceding event listener, we're the parent element frame. |
| 5192 | // In that case, we need to treat this as a normal mouse button down. |
| 5193 | // Therefore, we should compare the inclusive flattened tree ancestor |
| 5194 | // element of dragGestureContent and our content. |
| 5195 | const bool isDragGestureContent = |
| 5196 | mContent == dragGestureContent || |
| 5197 | mContent == |
| 5198 | dragGestureContent->GetInclusiveFlattenedTreeAncestorElement(); |
| 5199 | if (!isDragGestureContent) { |
| 5200 | return NS_OK; |
| 5201 | } |
| 5202 | } |
| 5203 | |
| 5204 | const nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo( |
| 5205 | aMouseEvent, RelativeTo{this}); |
| 5206 | |
| 5207 | // When not using `alt`, and clicking on a draggable, but non-editable |
| 5208 | // element, don't do anything, and let d&d handle the event. |
| 5209 | // |
| 5210 | // See bug 48876, bug 388659 and bug 55921 for context here. |
| 5211 | // |
| 5212 | // FIXME(emilio): The .Contains(pt) check looks a bit fishy. When would it be |
| 5213 | // false given we're the event target? If it is needed, why not checking the |
| 5214 | // actual draggable node rect instead? |
| 5215 | if (!aMouseEvent->IsAlt() && GetRectRelativeToSelf().Contains(pt)) { |
| 5216 | for (nsIContent* content = mContent; content; |
| 5217 | content = content->GetFlattenedTreeParent()) { |
| 5218 | if (nsContentUtils::ContentIsDraggable(content) && |
| 5219 | !content->IsEditable()) { |
| 5220 | return NS_OK; |
| 5221 | } |
| 5222 | } |
| 5223 | } |
| 5224 | |
| 5225 | // If we are in Navigator and the click is in a draggable node, we don't want |
| 5226 | // to start selection because we don't want to interfere with a potential |
| 5227 | // drag of said node and steal all its glory. |
| 5228 | const bool isEditor = |
| 5229 | presShell->GetSelectionFlags() == nsISelectionDisplay::DISPLAY_ALL; |
| 5230 | |
| 5231 | // Don't do something if it's middle button down event. |
| 5232 | const bool isPrimaryButtonDown = |
| 5233 | aMouseEvent->mButton == MouseButton::ePrimary; |
| 5234 | |
| 5235 | // Check whether this frame should handle selection events. If not, don't |
| 5236 | // tell selection the mouse event even occurred. |
| 5237 | if (!ShouldHandleSelectionMovementEvents(ForSelectionStart::Yes)) { |
| 5238 | return NS_OK; |
| 5239 | } |
| 5240 | |
| 5241 | if (isPrimaryButtonDown) { |
| 5242 | // If the mouse is dragged outside the nearest enclosing scrollable area |
| 5243 | // while making a selection, the area will be scrolled. To do this, capture |
| 5244 | // the mouse on the nearest scroll container frame. If there isn't a scroll |
| 5245 | // container frame, or something else is already capturing the mouse, |
| 5246 | // there's no reason to capture. |
| 5247 | if (!PresShell::GetCapturingContent()) { |
| 5248 | ScrollContainerFrame* scrollContainerFrame = |
| 5249 | nsLayoutUtils::GetNearestScrollContainerFrame( |
| 5250 | this, nsLayoutUtils::SCROLLABLE_SAME_DOC | |
| 5251 | nsLayoutUtils::SCROLLABLE_INCLUDE_HIDDEN); |
| 5252 | if (scrollContainerFrame) { |
| 5253 | nsIFrame* capturingFrame = scrollContainerFrame; |
| 5254 | PresShell::SetCapturingContent(capturingFrame->GetContent(), |
| 5255 | CaptureFlags::IgnoreAllowedState); |
| 5256 | } |
| 5257 | } |
| 5258 | } |
| 5259 | |
| 5260 | // XXX This is screwy; it really should use the selection frame, not the |
| 5261 | // event frame |
| 5262 | const nsFrameSelection* frameselection = GetConstFrameSelection(); |
| 5263 | if (!frameselection || frameselection->GetDisplaySelection() == |
| 5264 | nsISelectionController::SELECTION_OFF) { |
| 5265 | return NS_OK; // nothing to do we cannot affect selection from here |
| 5266 | } |
| 5267 | |
| 5268 | #ifdef XP_MACOSX |
| 5269 | // If Control key is pressed on macOS, it should be treated as right click. |
| 5270 | // So, don't change selection. |
| 5271 | if (aMouseEvent->IsControl()) { |
| 5272 | return NS_OK; |
| 5273 | } |
| 5274 | const bool control = aMouseEvent->IsMeta(); |
| 5275 | #else |
| 5276 | const bool control = aMouseEvent->IsControl(); |
| 5277 | #endif |
| 5278 | |
| 5279 | RefPtr<nsFrameSelection> fc = const_cast<nsFrameSelection*>(frameselection); |
| 5280 | if (isPrimaryButtonDown && aMouseEvent->mClickCount > 1) { |
| 5281 | // These methods aren't const but can't actually delete anything, |
| 5282 | // so no need for AutoWeakFrame. |
| 5283 | fc->SetDragState(true); |
| 5284 | return HandleMultiplePress(aPresContext, aMouseEvent, aEventStatus, |
| 5285 | control); |
| 5286 | } |
| 5287 | |
| 5288 | ContentOffsets offsets = GetContentOffsetsFromPoint(pt, SKIP_HIDDEN); |
| 5289 | |
| 5290 | if (!offsets.content) { |
| 5291 | return NS_ERROR_FAILURE; |
| 5292 | } |
| 5293 | |
| 5294 | const bool isSecondaryButton = |
| 5295 | aMouseEvent->mButton == MouseButton::eSecondary; |
| 5296 | if (isSecondaryButton) { |
| 5297 | if (!MovingCaretToEventPointAllowedIfSecondaryButtonEvent( |
| 5298 | *frameselection, *aMouseEvent, *offsets.content, |
| 5299 | // When we collapse selection in nsFrameSelection::TakeFocus, |
| 5300 | // we always collapse selection to the start offset. Therefore, |
| 5301 | // we can ignore the end offset here. E.g., when an <img> is |
| 5302 | // clicked, set the primary offset to after it, but the the |
| 5303 | // secondary offset may be before it, see OffsetsForSingleFrame for |
| 5304 | // the detail. |
| 5305 | offsets.StartOffset())) { |
| 5306 | return NS_OK; |
| 5307 | } |
| 5308 | } |
| 5309 | |
| 5310 | if (aMouseEvent->mMessage == eMouseDown && |
| 5311 | aMouseEvent->mButton == MouseButton::eMiddle && |
| 5312 | !offsets.content->IsEditable()) { |
| 5313 | // However, some users don't like the Chrome compatible behavior of |
| 5314 | // middle mouse click. They want to keep selection after starting |
| 5315 | // autoscroll. However, the selection change is important for middle |
| 5316 | // mouse past. Therefore, we should allow users to take the traditional |
| 5317 | // behavior back by themselves unless middle click paste is enabled or |
| 5318 | // autoscrolling is disabled. |
| 5319 | if (!Preferences::GetBool("middlemouse.paste", false) && |
| 5320 | Preferences::GetBool("general.autoScroll", false) && |
| 5321 | Preferences::GetBool("general.autoscroll.prevent_to_collapse_selection_" |
| 5322 | "by_middle_mouse_down", |
| 5323 | false)) { |
| 5324 | return NS_OK; |
| 5325 | } |
| 5326 | } |
| 5327 | |
| 5328 | if (isPrimaryButtonDown) { |
| 5329 | // Let Ctrl/Cmd + left mouse down do table selection instead of drag |
| 5330 | // initiation. |
| 5331 | nsCOMPtr<nsIContent> parentContent; |
| 5332 | int32_t contentOffset; |
| 5333 | TableSelectionMode target; |
| 5334 | nsresult rv = GetDataForTableSelection( |
| 5335 | frameselection, presShell, aMouseEvent, getter_AddRefs(parentContent), |
| 5336 | &contentOffset, &target); |
| 5337 | if (NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1))) && parentContent) { |
| 5338 | fc->SetDragState(true); |
| 5339 | return fc->HandleTableSelection(parentContent, contentOffset, target, |
| 5340 | aMouseEvent); |
| 5341 | } |
| 5342 | } |
| 5343 | |
| 5344 | fc->SetDelayedCaretData(nullptr); |
| 5345 | |
| 5346 | if (isPrimaryButtonDown) { |
| 5347 | // Check if any part of this frame is selected, and if the user clicked |
| 5348 | // inside the selected region, and if it's the left button. If so, we delay |
| 5349 | // starting a new selection since the user may be trying to drag the |
| 5350 | // selected region to some other app. |
| 5351 | |
| 5352 | if (GetContent() && GetContent()->IsMaybeSelected()) { |
| 5353 | bool inSelection = false; |
| 5354 | UniquePtr<SelectionDetails> details = frameselection->LookUpSelection( |
| 5355 | offsets.content, 0, offsets.EndOffset(), |
| 5356 | nsFrameSelection::IgnoreNormalSelection::No); |
| 5357 | |
| 5358 | // |
| 5359 | // If there are any details, check to see if the user clicked |
| 5360 | // within any selected region of the frame. |
| 5361 | // |
| 5362 | |
| 5363 | for (SelectionDetails* curDetail = details.get(); curDetail; |
| 5364 | curDetail = curDetail->mNext.get()) { |
| 5365 | // |
| 5366 | // If the user clicked inside a selection, then just |
| 5367 | // return without doing anything. We will handle placing |
| 5368 | // the caret later on when the mouse is released. We ignore |
| 5369 | // the spellcheck, find and url formatting selections. |
| 5370 | // |
| 5371 | if (curDetail->mSelectionType != SelectionType::eSpellCheck && |
| 5372 | curDetail->mSelectionType != SelectionType::eFind && |
| 5373 | curDetail->mSelectionType != SelectionType::eURLSecondary && |
| 5374 | curDetail->mSelectionType != SelectionType::eURLStrikeout && |
| 5375 | curDetail->mSelectionType != SelectionType::eHighlight && |
| 5376 | curDetail->mSelectionType != SelectionType::eTargetText && |
| 5377 | curDetail->mStart <= offsets.StartOffset() && |
| 5378 | offsets.EndOffset() <= curDetail->mEnd) { |
| 5379 | inSelection = true; |
| 5380 | } |
| 5381 | } |
| 5382 | |
| 5383 | if (inSelection) { |
| 5384 | fc->SetDragState(false); |
| 5385 | fc->SetDelayedCaretData(aMouseEvent); |
| 5386 | return NS_OK; |
| 5387 | } |
| 5388 | } |
| 5389 | |
| 5390 | fc->SetDragState(true); |
| 5391 | } |
| 5392 | |
| 5393 | // Do not touch any nsIFrame members after this point without adding |
| 5394 | // weakFrame checks. |
| 5395 | const nsFrameSelection::FocusMode focusMode = [&]() { |
| 5396 | // If "Shift" and "Ctrl" are both pressed, "Shift" is given precedence. This |
| 5397 | // mimics the old behaviour. |
| 5398 | const bool isShift = |
| 5399 | aMouseEvent->IsShift() && |
| 5400 | // If Shift + secondary button press shoud open context menu without a |
| 5401 | // contextmenu event, user wants to open context menu like as a |
| 5402 | // secondary button press without Shift key. |
| 5403 | !(isSecondaryButton && |
| 5404 | StaticPrefs::dom_event_contextmenu_shift_suppresses_event()); |
| 5405 | if (isShift) { |
| 5406 | // If clicked in a link when focused content is editable, we should |
| 5407 | // collapse selection in the link for compatibility with Blink. |
| 5408 | if (isEditor) { |
| 5409 | for (Element* element : mContent->InclusiveAncestorsOfType<Element>()) { |
| 5410 | if (element->IsLink()) { |
| 5411 | return nsFrameSelection::FocusMode::kCollapseToNewPoint; |
| 5412 | } |
| 5413 | } |
| 5414 | } |
| 5415 | return nsFrameSelection::FocusMode::kExtendSelection; |
| 5416 | } |
| 5417 | |
| 5418 | if (isPrimaryButtonDown && control) { |
| 5419 | return nsFrameSelection::FocusMode::kMultiRangeSelection; |
| 5420 | } |
| 5421 | |
| 5422 | return nsFrameSelection::FocusMode::kCollapseToNewPoint; |
| 5423 | }(); |
| 5424 | |
| 5425 | nsresult rv = fc->HandleClick( |
| 5426 | MOZ_KnownLive(offsets.content)(offsets.content) /* bug 1636889 */, offsets.StartOffset(), |
| 5427 | offsets.EndOffset(), focusMode, offsets.associate); |
| 5428 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
| 5429 | return rv; |
| 5430 | } |
| 5431 | |
| 5432 | // We don't handle mouse button up if it's middle button. |
| 5433 | if (isPrimaryButtonDown && offsets.offset != offsets.secondaryOffset) { |
| 5434 | fc->MaintainSelection(); |
| 5435 | } |
| 5436 | |
| 5437 | if (isPrimaryButtonDown && isEditor && !aMouseEvent->IsShift() && |
| 5438 | (offsets.EndOffset() - offsets.StartOffset()) == 1) { |
| 5439 | // A single node is selected and we aren't extending an existing selection, |
| 5440 | // which means the user clicked directly on an object (either |
| 5441 | // `user-select: all` or a non-text node without children). Therefore, |
| 5442 | // disable selection extension during mouse moves. |
| 5443 | // XXX This is a bit hacky; shouldn't editor be able to deal with this? |
| 5444 | fc->SetDragState(false); |
| 5445 | } |
| 5446 | |
| 5447 | return NS_OK; |
| 5448 | } |
| 5449 | |
| 5450 | bool nsIFrame::MovingCaretToEventPointAllowedIfSecondaryButtonEvent( |
| 5451 | const nsFrameSelection& aFrameSelection, |
| 5452 | WidgetMouseEvent& aSecondaryButtonEvent, |
| 5453 | const nsIContent& aContentAtEventPoint, int32_t aOffsetAtEventPoint) const { |
| 5454 | MOZ_ASSERT(aSecondaryButtonEvent.mButton == MouseButton::eSecondary)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aSecondaryButtonEvent.mButton == MouseButton::eSecondary )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aSecondaryButtonEvent.mButton == MouseButton::eSecondary ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "aSecondaryButtonEvent.mButton == MouseButton::eSecondary", "./../../../layout/generic/nsIFrame.cpp" , 5454); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aSecondaryButtonEvent.mButton == MouseButton::eSecondary" ")"); do { MOZ_CrashSequence(__null, 5454); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5455 | |
| 5456 | if (NS_WARN_IF(aOffsetAtEventPoint < 0)NS_warn_if_impl(aOffsetAtEventPoint < 0, "aOffsetAtEventPoint < 0" , "./../../../layout/generic/nsIFrame.cpp", 5456)) { |
| 5457 | return false; |
| 5458 | } |
| 5459 | |
| 5460 | const bool contentIsEditable = aContentAtEventPoint.IsEditable(); |
| 5461 | const TextControlElement* const contentAsTextControl = |
| 5462 | TextControlElement::FromNodeOrNull( |
| 5463 | aContentAtEventPoint.IsTextControlElement() |
| 5464 | ? &aContentAtEventPoint |
| 5465 | : aContentAtEventPoint.GetClosestNativeAnonymousSubtreeRoot()); |
| 5466 | const Selection& selection = aFrameSelection.NormalSelection(); |
| 5467 | const bool selectionIsCollapsed = |
| 5468 | selection.AreNormalAndCrossShadowBoundaryRangesCollapsed(); |
| 5469 | // If right click in a selection range, we should not collapse |
| 5470 | // selection. |
| 5471 | if (!selectionIsCollapsed && nsContentUtils::IsPointInSelection( |
| 5472 | selection, aContentAtEventPoint, |
| 5473 | static_cast<uint32_t>(aOffsetAtEventPoint), |
| 5474 | true /* aAllowCrossShadowBoundary */)) { |
| 5475 | return false; |
| 5476 | } |
| 5477 | const bool wantToPreventMoveCaret = |
| 5478 | StaticPrefs:: |
| 5479 | ui_mouse_right_click_move_caret_stop_if_in_focused_editable_node() && |
| 5480 | selectionIsCollapsed && (contentIsEditable || contentAsTextControl); |
| 5481 | const bool wantToPreventCollapseSelection = |
| 5482 | StaticPrefs:: |
| 5483 | ui_mouse_right_click_collapse_selection_stop_if_non_collapsed_selection() && |
| 5484 | !selectionIsCollapsed; |
| 5485 | if (wantToPreventMoveCaret || wantToPreventCollapseSelection) { |
| 5486 | // If currently selection is limited in an editing host, we should not |
| 5487 | // collapse selection nor move caret if the clicked point is in the |
| 5488 | // ancestor limiter. Otherwise, this mouse click moves focus from the |
| 5489 | // editing host to different one or blur the editing host. In this case, |
| 5490 | // we need to update selection because keeping current selection in the |
| 5491 | // editing host looks like it's not blurred. |
| 5492 | // FIXME: If the active editing host is the document element, editor |
| 5493 | // does not set ancestor limiter properly. Fix it in the editor side. |
| 5494 | if (nsIContent* ancestorLimiter = selection.GetAncestorLimiter()) { |
| 5495 | MOZ_ASSERT(ancestorLimiter->IsEditable())do { static_assert( mozilla::detail::AssertionConditionType< decltype(ancestorLimiter->IsEditable())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(ancestorLimiter->IsEditable ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("ancestorLimiter->IsEditable()", "./../../../layout/generic/nsIFrame.cpp" , 5495); AnnotateMozCrashReason("MOZ_ASSERT" "(" "ancestorLimiter->IsEditable()" ")"); do { MOZ_CrashSequence(__null, 5495); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5496 | return !aContentAtEventPoint.IsInclusiveDescendantOf(ancestorLimiter); |
| 5497 | } |
| 5498 | } |
| 5499 | // If selection is editable and `stop_if_in_focused_editable_node` pref is |
| 5500 | // set to true, user does not want to move caret to right click place if |
| 5501 | // clicked in the focused text control element. |
| 5502 | if (wantToPreventMoveCaret && contentAsTextControl && |
| 5503 | contentAsTextControl == nsFocusManager::GetFocusedElementStatic()) { |
| 5504 | return false; |
| 5505 | } |
| 5506 | // If currently selection is not limited in an editing host, we should |
| 5507 | // collapse selection only when this click moves focus to an editing |
| 5508 | // host because we need to update selection in this case. |
| 5509 | if (wantToPreventCollapseSelection && !contentIsEditable) { |
| 5510 | return false; |
| 5511 | } |
| 5512 | |
| 5513 | return !StaticPrefs:: |
| 5514 | ui_mouse_right_click_collapse_selection_stop_if_non_editable_node() || |
| 5515 | // The user does not want to collapse selection into non-editable |
| 5516 | // content by a right button click. |
| 5517 | contentIsEditable || |
| 5518 | // Treat clicking in a text control as always clicked on editable |
| 5519 | // content because we want a hack only for clicking in normal text |
| 5520 | // nodes which is outside any editing hosts. |
| 5521 | contentAsTextControl; |
| 5522 | } |
| 5523 | |
| 5524 | void nsIFrame::HandleContextMenuEventToSelectWordOrLink( |
| 5525 | const WidgetMouseEvent& aContextMenuEvent) { |
| 5526 | MOZ_ASSERT(aContextMenuEvent.mMessage == eContextMenu)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aContextMenuEvent.mMessage == eContextMenu)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(aContextMenuEvent.mMessage == eContextMenu))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aContextMenuEvent.mMessage == eContextMenu" , "./../../../layout/generic/nsIFrame.cpp", 5526); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aContextMenuEvent.mMessage == eContextMenu" ")"); do { MOZ_CrashSequence(__null, 5526); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5527 | |
| 5528 | if (!StaticPrefs::ui_mouse_right_click_select_under_cursor()) { |
| 5529 | return; |
| 5530 | } |
| 5531 | |
| 5532 | // A menu opened from the keyboard acts on the selection the user already |
| 5533 | // made, and has no click point to select at. |
| 5534 | if (aContextMenuEvent.IsContextMenuKeyEvent()) { |
| 5535 | return; |
| 5536 | } |
| 5537 | |
| 5538 | if (!ShouldHandleSelectionMovementEvents(ForSelectionStart::Yes)) { |
| 5539 | return; |
| 5540 | } |
| 5541 | |
| 5542 | const nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo( |
| 5543 | &aContextMenuEvent, RelativeTo{this}); |
| 5544 | ContentOffsets offsets = GetContentOffsetsFromPoint(pt, SKIP_HIDDEN); |
| 5545 | if (!offsets.content) { |
| 5546 | return; |
| 5547 | } |
| 5548 | |
| 5549 | const RefPtr<nsFrameSelection> frameSelection = GetFrameSelection(); |
| 5550 | if (!frameSelection) { |
| 5551 | return; |
| 5552 | } |
| 5553 | |
| 5554 | if (!SelectingWordOrLinkAtEventPointAllowed( |
| 5555 | *frameSelection, aContextMenuEvent, pt, *offsets.content, |
| 5556 | offsets.StartOffset())) { |
| 5557 | return; |
| 5558 | } |
| 5559 | |
| 5560 | SelectWordOrLinkAtPoint(pt, |
| 5561 | MOZ_KnownLive(*offsets.content)(*offsets.content) /* bug 1636889 */); |
| 5562 | } |
| 5563 | |
| 5564 | bool nsIFrame::SelectingWordOrLinkAtEventPointAllowed( |
| 5565 | const nsFrameSelection& aFrameSelection, |
| 5566 | const WidgetMouseEvent& aContextMenuEvent, const nsPoint& aPoint, |
| 5567 | const nsIContent& aContentAtEventPoint, int32_t aOffsetAtEventPoint) const { |
| 5568 | MOZ_ASSERT(aContextMenuEvent.mMessage == eContextMenu)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aContextMenuEvent.mMessage == eContextMenu)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(aContextMenuEvent.mMessage == eContextMenu))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aContextMenuEvent.mMessage == eContextMenu" , "./../../../layout/generic/nsIFrame.cpp", 5568); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aContextMenuEvent.mMessage == eContextMenu" ")"); do { MOZ_CrashSequence(__null, 5568); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5569 | |
| 5570 | const bool contentIsEditable = aContentAtEventPoint.IsEditable(); |
| 5571 | if (contentIsEditable && |
| 5572 | !StaticPrefs::ui_mouse_right_click_select_in_editable()) { |
| 5573 | return false; |
| 5574 | } |
| 5575 | |
| 5576 | // Shift + secondary button press has already extended or collapsed the |
| 5577 | // selection on mouse down, so the user is pointing at a boundary rather than |
| 5578 | // at a word. |
| 5579 | if (aContextMenuEvent.IsShift()) { |
| 5580 | return false; |
| 5581 | } |
| 5582 | |
| 5583 | if (NS_WARN_IF(aOffsetAtEventPoint < 0)NS_warn_if_impl(aOffsetAtEventPoint < 0, "aOffsetAtEventPoint < 0" , "./../../../layout/generic/nsIFrame.cpp", 5583)) { |
| 5584 | return false; |
| 5585 | } |
| 5586 | |
| 5587 | const Selection& selection = aFrameSelection.NormalSelection(); |
| 5588 | // A click inside the selection keeps it, so that the context menu acts on |
| 5589 | // what the user selected rather than on what they happened to click. |
| 5590 | if (nsContentUtils::IsPointInSelection( |
| 5591 | selection, aContentAtEventPoint, |
| 5592 | static_cast<uint32_t>(aOffsetAtEventPoint), |
| 5593 | true /* aAllowCrossShadowBoundary */)) { |
| 5594 | return false; |
| 5595 | } |
| 5596 | |
| 5597 | // GetContentOffsetsFromPoint() snaps to the closest text, so the click may |
| 5598 | // have landed next to the text rather than on it, e.g. in the padding of a |
| 5599 | // block. Only a click on the text itself selects. |
| 5600 | const nsIFrame* const frameAtPoint = |
| 5601 | nsLayoutUtils::GetFrameForPoint(RelativeTo{this}, aPoint); |
| 5602 | return frameAtPoint && frameAtPoint->IsTextFrame(); |
| 5603 | } |
| 5604 | |
| 5605 | nsresult nsIFrame::SelectWordOrLinkAtPoint( |
| 5606 | const nsPoint& aPoint, const nsIContent& aContentAtEventPoint) { |
| 5607 | Element* linkToSelect = nullptr; |
| 5608 | for (Element* element : |
| 5609 | aContentAtEventPoint.InclusiveFlatTreeAncestorsOfType<Element>()) { |
| 5610 | if (element->IsLink()) { |
| 5611 | linkToSelect = element; |
| 5612 | break; |
| 5613 | } |
| 5614 | } |
| 5615 | if (!linkToSelect) { |
| 5616 | return SelectByTypeAtPoint(aPoint, eSelectWord, eSelectWord, 0); |
| 5617 | } |
| 5618 | |
| 5619 | RefPtr<nsFrameSelection> frameSelection = GetFrameSelection(); |
| 5620 | if (!frameSelection) { |
| 5621 | return NS_OK; |
| 5622 | } |
| 5623 | // Passing different start and end offsets is how HandleClick() selects a |
| 5624 | // range rather than collapsing, so this covers every child of the link. |
| 5625 | const uint32_t endOffset = linkToSelect->GetChildCount(); |
| 5626 | nsCOMPtr<nsIContent> link = linkToSelect; |
| 5627 | return frameSelection->HandleClick( |
| 5628 | link, 0u, endOffset, nsFrameSelection::FocusMode::kCollapseToNewPoint, |
| 5629 | CaretAssociationHint::After); |
| 5630 | } |
| 5631 | |
| 5632 | nsIFrame::ContentOffsets nsIFrame::GetContentOffsetsFromPointForSelection( |
| 5633 | const nsPoint& aPoint) { |
| 5634 | // A text control's own frames use its independent selection, where its |
| 5635 | // editor's anonymous content belongs. |
| 5636 | const nsFrameSelection* const frameSelection = GetConstFrameSelection(); |
| 5637 | const Element* const independentSelectionRoot = |
| 5638 | frameSelection ? frameSelection->GetIndependentSelectionRootElement() |
| 5639 | : nullptr; |
| 5640 | ContentOffsets offsets = GetContentOffsetsFromPoint( |
| 5641 | aPoint, independentSelectionRoot |
| 5642 | ? SKIP_HIDDEN |
| 5643 | : SKIP_HIDDEN | IGNORE_NATIVE_ANONYMOUS_SUBTREE); |
| 5644 | if (offsets.content && independentSelectionRoot && |
| 5645 | !independentSelectionRoot->Contains(offsets.content)) { |
| 5646 | // The text control's independent selection cannot use offsets outside |
| 5647 | // its editor, e.g. if a press on its padding resolves to an ancestor |
| 5648 | // with `user-select: all`. |
| 5649 | return ContentOffsets(); |
| 5650 | } |
| 5651 | return offsets; |
| 5652 | } |
| 5653 | |
| 5654 | nsresult nsIFrame::SelectByTypeAtPoint(const nsPoint& aPoint, |
| 5655 | nsSelectionAmount aBeginAmountType, |
| 5656 | nsSelectionAmount aEndAmountType, |
| 5657 | uint32_t aSelectFlags) { |
| 5658 | // No point in selecting if selection is turned off |
| 5659 | if (!ShouldHandleSelectionMovementEvents()) { |
| 5660 | return NS_OK; |
| 5661 | } |
| 5662 | |
| 5663 | ContentOffsets offsets = GetContentOffsetsFromPointForSelection(aPoint); |
| 5664 | if (!offsets.content) { |
| 5665 | return NS_ERROR_FAILURE; |
| 5666 | } |
| 5667 | |
| 5668 | FrameAndOffset frameAndOffset = SelectionMovementUtils::GetFrameForNodeOffset( |
| 5669 | offsets.content, offsets.offset, offsets.associate); |
| 5670 | if (!frameAndOffset) { |
| 5671 | return NS_ERROR_FAILURE; |
| 5672 | } |
| 5673 | return frameAndOffset->PeekBackwardAndForwardForSelection( |
| 5674 | aBeginAmountType, aEndAmountType, |
| 5675 | static_cast<int32_t>(frameAndOffset.mOffsetInFrameContent), |
| 5676 | aBeginAmountType != eSelectWord, aSelectFlags); |
| 5677 | } |
| 5678 | |
| 5679 | /** |
| 5680 | * Multiple Mouse Press -- line or paragraph selection -- for the frame. |
| 5681 | * Wouldn't it be nice if this didn't have to be hardwired into Frame code? |
| 5682 | */ |
| 5683 | NS_IMETHODIMPnsresult |
| 5684 | nsIFrame::HandleMultiplePress(nsPresContext* aPresContext, |
| 5685 | WidgetGUIEvent* aEvent, |
| 5686 | nsEventStatus* aEventStatus, bool aControlHeld) { |
| 5687 | NS_ENSURE_ARG_POINTER(aEvent)do { if ((__builtin_expect(!!(!(aEvent)), 0))) { NS_DebugBreak (NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aEvent" ") failed", nullptr , "./../../../layout/generic/nsIFrame.cpp", 5687); return NS_ERROR_INVALID_POINTER ; } } while (false); |
| 5688 | NS_ENSURE_ARG_POINTER(aEventStatus)do { if ((__builtin_expect(!!(!(aEventStatus)), 0))) { NS_DebugBreak (NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aEventStatus" ") failed" , nullptr, "./../../../layout/generic/nsIFrame.cpp", 5688); return NS_ERROR_INVALID_POINTER; } } while (false); |
| 5689 | |
| 5690 | if (nsEventStatus_eConsumeNoDefault == *aEventStatus || |
| 5691 | !ShouldHandleSelectionMovementEvents()) { |
| 5692 | return NS_OK; |
| 5693 | } |
| 5694 | |
| 5695 | // Find out whether we're doing line or paragraph selection. |
| 5696 | // If browser.triple_click_selects_paragraph is true, triple-click selects |
| 5697 | // paragraph. Otherwise, triple-click selects line, and quadruple-click |
| 5698 | // selects paragraph (on platforms that support quadruple-click). |
| 5699 | nsSelectionAmount beginAmount, endAmount; |
| 5700 | WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent(); |
| 5701 | if (!mouseEvent) { |
| 5702 | return NS_OK; |
| 5703 | } |
| 5704 | |
| 5705 | if (mouseEvent->mClickCount == 4) { |
| 5706 | beginAmount = endAmount = eSelectParagraph; |
| 5707 | } else if (mouseEvent->mClickCount == 3) { |
| 5708 | if (Preferences::GetBool("browser.triple_click_selects_paragraph")) { |
| 5709 | beginAmount = endAmount = eSelectParagraph; |
| 5710 | } else { |
| 5711 | beginAmount = eSelectBeginLine; |
| 5712 | endAmount = eSelectEndLine; |
| 5713 | } |
| 5714 | } else if (mouseEvent->mClickCount == 2) { |
| 5715 | // We only want inline frames; PeekBackwardAndForward dislikes blocks |
| 5716 | beginAmount = endAmount = eSelectWord; |
| 5717 | } else { |
| 5718 | return NS_OK; |
| 5719 | } |
| 5720 | |
| 5721 | nsPoint relPoint = nsLayoutUtils::GetEventCoordinatesRelativeTo( |
| 5722 | mouseEvent, RelativeTo{this}); |
| 5723 | return SelectByTypeAtPoint(relPoint, beginAmount, endAmount, |
| 5724 | (aControlHeld ? SELECT_ACCUMULATE : 0)); |
| 5725 | } |
| 5726 | |
| 5727 | nsresult nsIFrame::PeekBackwardAndForwardForSelection( |
| 5728 | nsSelectionAmount aAmountBack, nsSelectionAmount aAmountForward, |
| 5729 | int32_t aStartPos, bool aJumpLines, uint32_t aSelectFlags) { |
| 5730 | nsIFrame* baseFrame = this; |
| 5731 | int32_t baseOffset = aStartPos; |
| 5732 | nsresult rv; |
| 5733 | |
| 5734 | PeekOffsetOptions peekOffsetOptions{PeekOffsetOption::StopAtScroller}; |
| 5735 | if (aJumpLines) { |
| 5736 | peekOffsetOptions += PeekOffsetOption::JumpLines; |
| 5737 | } |
| 5738 | |
| 5739 | Element* const ancestorLimiter = [&]() -> Element* { |
| 5740 | const nsFrameSelection* const frameSelection = GetConstFrameSelection(); |
| 5741 | return frameSelection |
| 5742 | ? frameSelection |
| 5743 | ->GetAncestorLimiterOrIndependentSelectionRootElement() |
| 5744 | : nullptr; |
| 5745 | }(); |
| 5746 | |
| 5747 | if (aAmountBack == eSelectWord) { |
| 5748 | // To avoid selecting the previous word when at start of word, |
| 5749 | // first move one character forward. |
| 5750 | PeekOffsetStruct pos(eSelectCharacter, eDirNext, aStartPos, nsPoint(0, 0), |
| 5751 | peekOffsetOptions, eDefaultBehavior, ancestorLimiter); |
| 5752 | rv = PeekOffset(&pos); |
| 5753 | if (NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))) { |
| 5754 | baseFrame = pos.mResultFrame; |
| 5755 | baseOffset = pos.mContentOffset; |
| 5756 | } |
| 5757 | } |
| 5758 | |
| 5759 | // Search backward for a boundary. |
| 5760 | PeekOffsetStruct startpos(aAmountBack, eDirPrevious, baseOffset, |
| 5761 | nsPoint(0, 0), peekOffsetOptions, eDefaultBehavior, |
| 5762 | ancestorLimiter); |
| 5763 | rv = baseFrame->PeekOffset(&startpos); |
| 5764 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
| 5765 | return rv; |
| 5766 | } |
| 5767 | |
| 5768 | // If the backward search stayed within the same frame, search forward from |
| 5769 | // that position for the end boundary; but if it crossed out to a sibling or |
| 5770 | // ancestor, start from the original position. |
| 5771 | if (startpos.mResultFrame == baseFrame) { |
| 5772 | baseOffset = startpos.mContentOffset; |
| 5773 | } else { |
| 5774 | baseFrame = this; |
| 5775 | baseOffset = aStartPos; |
| 5776 | } |
| 5777 | |
| 5778 | PeekOffsetStruct endpos(aAmountForward, eDirNext, baseOffset, nsPoint(0, 0), |
| 5779 | peekOffsetOptions, eDefaultBehavior, ancestorLimiter); |
| 5780 | rv = baseFrame->PeekOffset(&endpos); |
| 5781 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
| 5782 | return rv; |
| 5783 | } |
| 5784 | |
| 5785 | // Keep frameSelection alive. |
| 5786 | RefPtr<nsFrameSelection> frameSelection = GetFrameSelection(); |
| 5787 | |
| 5788 | const nsFrameSelection::FocusMode focusMode = |
| 5789 | (aSelectFlags & SELECT_ACCUMULATE) |
| 5790 | ? nsFrameSelection::FocusMode::kMultiRangeSelection |
| 5791 | : nsFrameSelection::FocusMode::kCollapseToNewPoint; |
| 5792 | rv = frameSelection->HandleClick( |
| 5793 | MOZ_KnownLive(startpos.mResultContent)(startpos.mResultContent) /* bug 1636889 */, |
| 5794 | startpos.mContentOffset, startpos.mContentOffset, focusMode, |
| 5795 | CaretAssociationHint::After); |
| 5796 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
| 5797 | return rv; |
| 5798 | } |
| 5799 | |
| 5800 | rv = frameSelection->HandleClick( |
| 5801 | MOZ_KnownLive(endpos.mResultContent)(endpos.mResultContent) /* bug 1636889 */, |
| 5802 | endpos.mContentOffset, endpos.mContentOffset, |
| 5803 | nsFrameSelection::FocusMode::kExtendSelection, |
| 5804 | CaretAssociationHint::Before); |
| 5805 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
| 5806 | return rv; |
| 5807 | } |
| 5808 | if (aAmountBack == eSelectWord) { |
| 5809 | frameSelection->SetClickSelectionType(ClickSelectionType::Double); |
| 5810 | } else if (aAmountBack == eSelectParagraph) { |
| 5811 | frameSelection->SetClickSelectionType(ClickSelectionType::Triple); |
| 5812 | } |
| 5813 | |
| 5814 | // maintain selection |
| 5815 | return frameSelection->MaintainSelection(aAmountBack); |
| 5816 | } |
| 5817 | |
| 5818 | NS_IMETHODIMPnsresult nsIFrame::HandleDrag(nsPresContext* aPresContext, |
| 5819 | WidgetGUIEvent* aEvent, |
| 5820 | nsEventStatus* aEventStatus) { |
| 5821 | MOZ_ASSERT(aEvent->mClass == eMouseEventClass,do { static_assert( mozilla::detail::AssertionConditionType< decltype(aEvent->mClass == eMouseEventClass)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(aEvent->mClass == eMouseEventClass))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aEvent->mClass == eMouseEventClass" " (" "HandleDrag can only handle mouse event" ")", "./../../../layout/generic/nsIFrame.cpp" , 5822); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aEvent->mClass == eMouseEventClass" ") (" "HandleDrag can only handle mouse event" ")"); do { MOZ_CrashSequence (__null, 5822); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 5822 | "HandleDrag can only handle mouse event")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aEvent->mClass == eMouseEventClass)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(aEvent->mClass == eMouseEventClass))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aEvent->mClass == eMouseEventClass" " (" "HandleDrag can only handle mouse event" ")", "./../../../layout/generic/nsIFrame.cpp" , 5822); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aEvent->mClass == eMouseEventClass" ") (" "HandleDrag can only handle mouse event" ")"); do { MOZ_CrashSequence (__null, 5822); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 5823 | |
| 5824 | NS_ENSURE_ARG_POINTER(aEventStatus)do { if ((__builtin_expect(!!(!(aEventStatus)), 0))) { NS_DebugBreak (NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aEventStatus" ") failed" , nullptr, "./../../../layout/generic/nsIFrame.cpp", 5824); return NS_ERROR_INVALID_POINTER; } } while (false); |
| 5825 | |
| 5826 | RefPtr<nsFrameSelection> frameselection = GetFrameSelection(); |
| 5827 | if (!frameselection) { |
| 5828 | return NS_OK; |
| 5829 | } |
| 5830 | |
| 5831 | bool mouseDown = frameselection->GetDragState(); |
| 5832 | if (!mouseDown) { |
| 5833 | return NS_OK; |
| 5834 | } |
| 5835 | |
| 5836 | nsIFrame* scrollbar = |
| 5837 | nsLayoutUtils::GetClosestFrameOfType(this, LayoutFrameType::Scrollbar); |
| 5838 | if (!scrollbar && !ShouldHandleSelectionMovementEvents()) { |
| 5839 | // XXX Do we really need to exclude non-selectable content here? |
| 5840 | // GetContentOffsetsFromPoint can handle it just fine, although some |
| 5841 | // other stuff might not like it. |
| 5842 | return NS_OK; |
| 5843 | } |
| 5844 | |
| 5845 | frameselection->StopAutoScrollTimer(); |
| 5846 | |
| 5847 | // Check if we are dragging in a table cell |
| 5848 | nsCOMPtr<nsIContent> parentContent; |
| 5849 | int32_t contentOffset; |
| 5850 | TableSelectionMode target; |
| 5851 | WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent(); |
| 5852 | mozilla::PresShell* presShell = aPresContext->PresShell(); |
| 5853 | nsresult result; |
| 5854 | result = GetDataForTableSelection(frameselection, presShell, mouseEvent, |
| 5855 | getter_AddRefs(parentContent), |
| 5856 | &contentOffset, &target); |
| 5857 | |
| 5858 | AutoWeakFrame weakThis = this; |
| 5859 | if (NS_SUCCEEDED(result)((bool)(__builtin_expect(!!(!NS_FAILED_impl(result)), 1))) && parentContent) { |
| 5860 | result = frameselection->HandleTableSelection(parentContent, contentOffset, |
| 5861 | target, mouseEvent); |
| 5862 | if (NS_WARN_IF(NS_FAILED(result))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(result )), 0))), "NS_FAILED(result)", "./../../../layout/generic/nsIFrame.cpp" , 5862)) { |
| 5863 | return result; |
| 5864 | } |
| 5865 | } else { |
| 5866 | nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(mouseEvent, |
| 5867 | RelativeTo{this}); |
| 5868 | frameselection->HandleDrag(this, pt); |
| 5869 | } |
| 5870 | |
| 5871 | // The frameselection object notifies selection listeners synchronously above |
| 5872 | // which might have killed us. |
| 5873 | if (!weakThis.IsAlive()) { |
| 5874 | return NS_OK; |
| 5875 | } |
| 5876 | |
| 5877 | // Get the nearest scroll container frame. |
| 5878 | ScrollContainerFrame* scrollContainerFrame = |
| 5879 | nsLayoutUtils::GetNearestScrollContainerFrame( |
| 5880 | this, nsLayoutUtils::SCROLLABLE_SAME_DOC | |
| 5881 | nsLayoutUtils::SCROLLABLE_INCLUDE_HIDDEN); |
| 5882 | |
| 5883 | if (scrollContainerFrame) { |
| 5884 | nsIFrame* capturingFrame = scrollContainerFrame->GetScrolledFrame(); |
| 5885 | if (capturingFrame) { |
| 5886 | nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo( |
| 5887 | mouseEvent, RelativeTo{capturingFrame}); |
| 5888 | frameselection->StartAutoScrollTimer(capturingFrame, pt, 30); |
| 5889 | } |
| 5890 | } |
| 5891 | |
| 5892 | return NS_OK; |
| 5893 | } |
| 5894 | |
| 5895 | /** |
| 5896 | * This static method handles part of the nsIFrame::HandleRelease in a way |
| 5897 | * which doesn't rely on the nsIFrame object to stay alive. |
| 5898 | */ |
| 5899 | MOZ_CAN_RUN_SCRIPT_BOUNDARY static nsresult HandleFrameSelection( |
| 5900 | nsFrameSelection* aFrameSelection, nsIFrame::ContentOffsets& aOffsets, |
| 5901 | bool aHandleTableSel, int32_t aContentOffsetForTableSel, |
| 5902 | TableSelectionMode aTargetForTableSel, |
| 5903 | nsIContent* aParentContentForTableSel, WidgetGUIEvent* aEvent, |
| 5904 | const nsEventStatus* aEventStatus) { |
| 5905 | if (!aFrameSelection) { |
| 5906 | return NS_OK; |
| 5907 | } |
| 5908 | |
| 5909 | nsresult rv = NS_OK; |
| 5910 | |
| 5911 | if (nsEventStatus_eConsumeNoDefault != *aEventStatus) { |
| 5912 | if (!aHandleTableSel) { |
| 5913 | if (!aOffsets.content || !aFrameSelection->HasDelayedCaretData()) { |
| 5914 | return NS_ERROR_FAILURE; |
| 5915 | } |
| 5916 | |
| 5917 | // We are doing this to simulate what we would have done on HandlePress. |
| 5918 | // We didn't do it there to give the user an opportunity to drag |
| 5919 | // the text, but since they didn't drag, we want to place the |
| 5920 | // caret. |
| 5921 | // However, we'll use the mouse position from the release, since: |
| 5922 | // * it's easier |
| 5923 | // * that's the normal click position to use (although really, in |
| 5924 | // the normal case, small movements that don't count as a drag |
| 5925 | // can do selection) |
| 5926 | aFrameSelection->SetDragState(true); |
| 5927 | |
| 5928 | const nsFrameSelection::FocusMode focusMode = |
| 5929 | aFrameSelection->IsShiftDownInDelayedCaretData() |
| 5930 | ? nsFrameSelection::FocusMode::kExtendSelection |
| 5931 | : nsFrameSelection::FocusMode::kCollapseToNewPoint; |
| 5932 | rv = aFrameSelection->HandleClick( |
| 5933 | MOZ_KnownLive(aOffsets.content)(aOffsets.content) /* bug 1636889 */, |
| 5934 | aOffsets.StartOffset(), aOffsets.EndOffset(), focusMode, |
| 5935 | aOffsets.associate); |
| 5936 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
| 5937 | return rv; |
| 5938 | } |
| 5939 | } else if (aParentContentForTableSel) { |
| 5940 | aFrameSelection->SetDragState(false); |
| 5941 | rv = aFrameSelection->HandleTableSelection( |
| 5942 | aParentContentForTableSel, aContentOffsetForTableSel, |
| 5943 | aTargetForTableSel, aEvent->AsMouseEvent()); |
| 5944 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
| 5945 | return rv; |
| 5946 | } |
| 5947 | } |
| 5948 | aFrameSelection->SetDelayedCaretData(nullptr); |
| 5949 | } |
| 5950 | |
| 5951 | aFrameSelection->SetDragState(false); |
| 5952 | aFrameSelection->StopAutoScrollTimer(); |
| 5953 | |
| 5954 | return NS_OK; |
| 5955 | } |
| 5956 | |
| 5957 | NS_IMETHODIMPnsresult nsIFrame::HandleRelease(nsPresContext* aPresContext, |
| 5958 | WidgetGUIEvent* aEvent, |
| 5959 | nsEventStatus* aEventStatus) { |
| 5960 | if (aEvent->mClass != eMouseEventClass) { |
| 5961 | return NS_OK; |
| 5962 | } |
| 5963 | |
| 5964 | nsIFrame* activeFrame = GetActiveSelectionFrame(aPresContext, this); |
| 5965 | |
| 5966 | nsCOMPtr<nsIContent> captureContent = PresShell::GetCapturingContent(); |
| 5967 | |
| 5968 | const bool selectionOff = !ShouldHandleSelectionMovementEvents(); |
| 5969 | |
| 5970 | RefPtr<nsFrameSelection> frameselection; |
| 5971 | ContentOffsets offsets; |
| 5972 | nsCOMPtr<nsIContent> parentContent; |
| 5973 | int32_t contentOffsetForTableSel = 0; |
| 5974 | TableSelectionMode targetForTableSel = TableSelectionMode::None; |
| 5975 | bool handleTableSelection = true; |
| 5976 | |
| 5977 | if (!selectionOff) { |
| 5978 | frameselection = GetFrameSelection(); |
| 5979 | if (nsEventStatus_eConsumeNoDefault != *aEventStatus && frameselection) { |
| 5980 | // Check if the frameselection recorded the mouse going down. |
| 5981 | // If not, the user must have clicked in a part of the selection. |
| 5982 | // Place the caret before continuing! |
| 5983 | |
| 5984 | if (frameselection->MouseDownRecorded()) { |
| 5985 | nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo( |
| 5986 | aEvent, RelativeTo{this}); |
| 5987 | offsets = GetContentOffsetsFromPoint(pt, SKIP_HIDDEN); |
| 5988 | handleTableSelection = false; |
| 5989 | } else { |
| 5990 | GetDataForTableSelection(frameselection, PresShell(), |
| 5991 | aEvent->AsMouseEvent(), |
| 5992 | getter_AddRefs(parentContent), |
| 5993 | &contentOffsetForTableSel, &targetForTableSel); |
| 5994 | } |
| 5995 | } |
| 5996 | } |
| 5997 | |
| 5998 | // We might be capturing in some other document and the event just happened to |
| 5999 | // trickle down here. Make sure that document's frame selection is notified. |
| 6000 | // Note, this may cause the current nsIFrame object to be deleted, bug 336592. |
| 6001 | RefPtr<nsFrameSelection> frameSelection; |
| 6002 | if (activeFrame != this && |
| 6003 | activeFrame->ShouldHandleSelectionMovementEvents()) { |
| 6004 | frameSelection = activeFrame->GetFrameSelection(); |
| 6005 | } |
| 6006 | |
| 6007 | // Also check the selection of the capturing content which might be in a |
| 6008 | // different document. |
| 6009 | if (!frameSelection && captureContent) { |
| 6010 | if (Document* doc = captureContent->GetComposedDoc()) { |
| 6011 | mozilla::PresShell* capturingPresShell = doc->GetPresShell(); |
| 6012 | if (capturingPresShell && |
| 6013 | capturingPresShell != PresContext()->GetPresShell()) { |
| 6014 | frameSelection = capturingPresShell->FrameSelection(); |
| 6015 | } |
| 6016 | } |
| 6017 | } |
| 6018 | |
| 6019 | if (frameSelection) { |
| 6020 | AutoWeakFrame wf(this); |
| 6021 | frameSelection->SetDragState(false); |
| 6022 | frameSelection->StopAutoScrollTimer(); |
| 6023 | if (wf.IsAlive()) { |
| 6024 | ScrollContainerFrame* scrollContainerFrame = |
| 6025 | nsLayoutUtils::GetNearestScrollContainerFrame( |
| 6026 | this, nsLayoutUtils::SCROLLABLE_SAME_DOC | |
| 6027 | nsLayoutUtils::SCROLLABLE_INCLUDE_HIDDEN); |
| 6028 | if (scrollContainerFrame) { |
| 6029 | // Perform any additional scrolling needed to maintain CSS snap point |
| 6030 | // requirements when autoscrolling is over. |
| 6031 | scrollContainerFrame->ScrollSnap(); |
| 6032 | } |
| 6033 | } |
| 6034 | } |
| 6035 | |
| 6036 | // Do not call any methods of the current object after this point!!! |
| 6037 | // The object is perhaps dead! |
| 6038 | |
| 6039 | return selectionOff ? NS_OK |
| 6040 | : HandleFrameSelection( |
| 6041 | frameselection, offsets, handleTableSelection, |
| 6042 | contentOffsetForTableSel, targetForTableSel, |
| 6043 | parentContent, aEvent, aEventStatus); |
| 6044 | } |
| 6045 | |
| 6046 | struct MOZ_STACK_CLASS FrameContentRange { |
| 6047 | FrameContentRange(nsIContent* aContent, int32_t aStart, int32_t aEnd) |
| 6048 | : content(aContent), start(aStart), end(aEnd) {} |
| 6049 | nsCOMPtr<nsIContent> content; |
| 6050 | int32_t start; |
| 6051 | int32_t end; |
| 6052 | }; |
| 6053 | |
| 6054 | static bool IsRelevantBlockFrame(const nsIFrame* aFrame) { |
| 6055 | if (!aFrame->IsBlockOutside() && !aFrame->IsTableCaption()) { |
| 6056 | return false; |
| 6057 | } |
| 6058 | if (aFrame->GetContent() && |
| 6059 | aFrame->GetContent()->IsInNativeAnonymousSubtree() && |
| 6060 | !aFrame->GetContent()->HasBeenInUAWidget()) { |
| 6061 | // This helps skipping things like scrollbar parts. |
| 6062 | return false; |
| 6063 | } |
| 6064 | auto pseudoType = aFrame->Style()->GetPseudoType(); |
| 6065 | if (PseudoStyle::IsAnonBox(pseudoType)) { |
| 6066 | // Table cell contents should be considered block boundaries for this |
| 6067 | // purpose. |
| 6068 | return pseudoType == PseudoStyleType::MozCellContent; |
| 6069 | } |
| 6070 | return true; |
| 6071 | } |
| 6072 | |
| 6073 | // Retrieve the content offsets of a frame |
| 6074 | static FrameContentRange GetRangeForFrame(const nsIFrame* aFrame, |
| 6075 | bool includeReplaced = false) { |
| 6076 | nsIContent* content = aFrame->GetContent(); |
| 6077 | if (!content) { |
| 6078 | NS_WARNING("Frame has no content")NS_DebugBreak(NS_DEBUG_WARNING, "Frame has no content", nullptr , "./../../../layout/generic/nsIFrame.cpp", 6078); |
| 6079 | return FrameContentRange(nullptr, -1, -1); |
| 6080 | } |
| 6081 | |
| 6082 | LayoutFrameType type = aFrame->Type(); |
| 6083 | if (type == LayoutFrameType::Text) { |
| 6084 | auto [offset, offsetEnd] = aFrame->GetOffsets(); |
| 6085 | return FrameContentRange(content, offset, offsetEnd); |
| 6086 | } |
| 6087 | |
| 6088 | if (type == LayoutFrameType::Br) { |
| 6089 | nsIContent* parent = content->GetParent(); |
| 6090 | const int32_t beginOffset = parent->ComputeIndexOf_Deprecated(content); |
| 6091 | return FrameContentRange(parent, beginOffset, beginOffset); |
| 6092 | } |
| 6093 | |
| 6094 | while (content->IsRootOfNativeAnonymousSubtree()) { |
| 6095 | content = content->GetParent(); |
| 6096 | } |
| 6097 | |
| 6098 | if (!includeReplaced && aFrame->IsReplaced()) { |
| 6099 | if (auto* parent = content->GetParent()) { |
| 6100 | // TODO(emilio): Revise this in presence of Shadow DOM / display: |
| 6101 | // contents, it's likely that we don't want to just walk the light tree, |
| 6102 | // and we need to change the representation of FrameContentRange. |
| 6103 | Maybe<uint32_t> index = parent->ComputeIndexOf(content); |
| 6104 | MOZ_ASSERT(index.isSome())do { static_assert( mozilla::detail::AssertionConditionType< decltype(index.isSome())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(index.isSome()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("index.isSome()" , "./../../../layout/generic/nsIFrame.cpp", 6104); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "index.isSome()" ")"); do { MOZ_CrashSequence (__null, 6104); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 6105 | return FrameContentRange(parent, static_cast<int32_t>(*index), |
| 6106 | static_cast<int32_t>(*index + 1)); |
| 6107 | } |
| 6108 | } |
| 6109 | |
| 6110 | return FrameContentRange(content, 0, content->GetChildCount()); |
| 6111 | } |
| 6112 | |
| 6113 | // The FrameTarget represents the closest frame to a point that can be selected |
| 6114 | // The frame is the frame represented, frameEdge says whether one end of the |
| 6115 | // frame is the result (in which case different handling is needed), and |
| 6116 | // afterFrame says which end is represented if frameEdge is true |
| 6117 | struct FrameTarget { |
| 6118 | explicit operator bool() const { return !!frame; } |
| 6119 | |
| 6120 | nsIFrame* frame = nullptr; |
| 6121 | bool frameEdge = false; |
| 6122 | bool afterFrame = false; |
| 6123 | }; |
| 6124 | |
| 6125 | // See function implementation for information |
| 6126 | static FrameTarget GetSelectionClosestFrame(nsIFrame* aFrame, |
| 6127 | const nsPoint& aPoint, |
| 6128 | uint32_t aFlags); |
| 6129 | |
| 6130 | static bool SelfIsSelectable(nsIFrame* aFrame, nsIFrame* aParentFrame, |
| 6131 | uint32_t aFlags) { |
| 6132 | // We should not move selection into a native anonymous subtree when handling |
| 6133 | // selection outside it. |
| 6134 | if ((aFlags & nsIFrame::IGNORE_NATIVE_ANONYMOUS_SUBTREE) && |
| 6135 | aParentFrame->GetClosestNativeAnonymousSubtreeRoot() != |
| 6136 | aFrame->GetClosestNativeAnonymousSubtreeRoot()) { |
| 6137 | return false; |
| 6138 | } |
| 6139 | if ((aFlags & nsIFrame::SKIP_HIDDEN) && |
| 6140 | (!aFrame->StyleVisibility()->IsVisible() || |
| 6141 | aFrame->IsHiddenByContentVisibilityOnAnyAncestor( |
| 6142 | nsIFrame::IncludeContentVisibility::Hidden))) { |
| 6143 | return false; |
| 6144 | } |
| 6145 | if (aFrame->IsGeneratedContentFrame()) { |
| 6146 | return false; |
| 6147 | } |
| 6148 | // XXX Why do we ignore `aFlag & nsIFrame::IGNORE_SELECTION_STYLE`? |
| 6149 | if (aFrame->Style()->UserSelect() == StyleUserSelect::None) { |
| 6150 | return false; |
| 6151 | } |
| 6152 | if (aFrame->IsEmpty() && |
| 6153 | (!aFrame->IsTextFrame() || !aFrame->ContentIsEditable())) { |
| 6154 | // FIXME(emilio): Historically we haven't treated empty frames as |
| 6155 | // selectable, but also we had special-cases so that editable empty text |
| 6156 | // frames returned false from IsEmpty(). Sort this out (probably by |
| 6157 | // removing the IsEmpty() condition altogether). |
| 6158 | return false; |
| 6159 | } |
| 6160 | return true; |
| 6161 | } |
| 6162 | |
| 6163 | static bool FrameContentCanHaveParentSelectionRange(nsIFrame* aFrame) { |
| 6164 | // If we are only near (not directly over) then don't traverse frames with |
| 6165 | // independent selection (e.g. text controls, see bug 268497). Note that this |
| 6166 | // prevents any of the users of this method from entering form controls. |
| 6167 | // XXX We might want some way to allow using the up-arrow to go into a form |
| 6168 | // control, but the focus didn't work right anyway; it'd probably be enough |
| 6169 | // if the left and right arrows could enter textboxes (which I don't believe |
| 6170 | // they can at the moment) |
| 6171 | if (aFrame->IsTextInputFrame()) { |
| 6172 | return false; |
| 6173 | } |
| 6174 | return !aFrame->IsGeneratedContentFrame(); |
| 6175 | } |
| 6176 | |
| 6177 | static bool SelectionDescendToKids(nsIFrame* aFrame) { |
| 6178 | if (!FrameContentCanHaveParentSelectionRange(aFrame)) { |
| 6179 | return false; |
| 6180 | } |
| 6181 | auto style = aFrame->Style()->UserSelect(); |
| 6182 | return style != StyleUserSelect::All && style != StyleUserSelect::None; |
| 6183 | } |
| 6184 | |
| 6185 | static FrameTarget GetSelectionClosestFrameForChild(nsIFrame* aChild, |
| 6186 | const nsPoint& aPoint, |
| 6187 | uint32_t aFlags) { |
| 6188 | nsIFrame* parent = aChild->GetParent(); |
| 6189 | if (SelectionDescendToKids(aChild)) { |
| 6190 | nsPoint pt = aPoint - aChild->GetOffsetTo(parent); |
| 6191 | return GetSelectionClosestFrame(aChild, pt, aFlags); |
| 6192 | } |
| 6193 | return FrameTarget{aChild, false, false}; |
| 6194 | } |
| 6195 | |
| 6196 | // When the cursor needs to be at the beginning of a block, it shouldn't be |
| 6197 | // before the first child. A click on a block whose first child is a block |
| 6198 | // should put the cursor in the child. The cursor shouldn't be between the |
| 6199 | // blocks, because that's not where it's expected. |
| 6200 | // Note that this method is guaranteed to succeed. |
| 6201 | static FrameTarget DrillDownToSelectionFrame(nsIFrame* aFrame, bool aEndFrame, |
| 6202 | uint32_t aFlags) { |
| 6203 | if (SelectionDescendToKids(aFrame)) { |
| 6204 | nsIFrame* result = nullptr; |
| 6205 | nsIFrame* frame = aFrame->PrincipalChildList().FirstChild(); |
| 6206 | if (!aEndFrame) { |
| 6207 | while (frame && !SelfIsSelectable(frame, aFrame, aFlags)) { |
| 6208 | frame = frame->GetNextSibling(); |
| 6209 | } |
| 6210 | if (frame) { |
| 6211 | result = frame; |
| 6212 | } |
| 6213 | } else { |
| 6214 | // Because the frame tree is singly linked, to find the last frame, |
| 6215 | // we have to iterate through all the frames |
| 6216 | // XXX I have a feeling this could be slow for long blocks, although |
| 6217 | // I can't find any slowdowns |
| 6218 | while (frame) { |
| 6219 | if (SelfIsSelectable(frame, aFrame, aFlags)) { |
| 6220 | result = frame; |
| 6221 | } |
| 6222 | frame = frame->GetNextSibling(); |
| 6223 | } |
| 6224 | } |
| 6225 | if (result) { |
| 6226 | return DrillDownToSelectionFrame(result, aEndFrame, aFlags); |
| 6227 | } |
| 6228 | } |
| 6229 | // If the current frame has no targetable children, target the current frame |
| 6230 | return FrameTarget{aFrame, true, aEndFrame}; |
| 6231 | } |
| 6232 | |
| 6233 | // This method finds the closest valid FrameTarget on a given line; if there is |
| 6234 | // no valid FrameTarget on the line, it returns a null FrameTarget |
| 6235 | static FrameTarget GetSelectionClosestFrameForLine( |
| 6236 | nsBlockFrame* aParent, nsBlockFrame::LineIterator aLine, |
| 6237 | const nsPoint& aPoint, uint32_t aFlags) { |
| 6238 | // Account for end of lines (any iterator from the block is valid) |
| 6239 | if (aLine == aParent->LinesEnd()) { |
| 6240 | return DrillDownToSelectionFrame(aParent, true, aFlags); |
| 6241 | } |
| 6242 | nsIFrame* closestFromIStart = nullptr; |
| 6243 | nsIFrame* closestFromIEnd = nullptr; |
| 6244 | nscoord closestIStart = aLine->IStart(), closestIEnd = aLine->IEnd(); |
| 6245 | WritingMode wm = aLine->mWritingMode; |
| 6246 | LogicalPoint pt(wm, aPoint, aLine->mContainerSize); |
| 6247 | bool canSkipBr = false; |
| 6248 | bool lastFrameWasEditable = false; |
| 6249 | for (nsIFrame* frame : aLine->ChildFrames()) { |
| 6250 | // Skip brFrames. Can only skip if the line contains at least |
| 6251 | // one selectable and non-empty frame before. Also, avoid skipping brs if |
| 6252 | // the previous thing had a different editableness than us, since then we |
| 6253 | // may end up not being able to select after it if the br is the last thing |
| 6254 | // on the line. |
| 6255 | if (!SelfIsSelectable(frame, aParent, aFlags) || |
| 6256 | (canSkipBr && frame->IsBrFrame() && |
| 6257 | lastFrameWasEditable == frame->GetContent()->IsEditable())) { |
| 6258 | continue; |
| 6259 | } |
| 6260 | canSkipBr = true; |
| 6261 | lastFrameWasEditable = |
| 6262 | frame->GetContent() && frame->GetContent()->IsEditable(); |
| 6263 | LogicalRect frameRect = |
| 6264 | LogicalRect(wm, frame->GetRect(), aLine->mContainerSize); |
| 6265 | if (pt.I(wm) >= frameRect.IStart(wm)) { |
| 6266 | if (pt.I(wm) < frameRect.IEnd(wm)) { |
| 6267 | return GetSelectionClosestFrameForChild(frame, aPoint, aFlags); |
| 6268 | } |
| 6269 | if (frameRect.IEnd(wm) >= closestIStart) { |
| 6270 | closestFromIStart = frame; |
| 6271 | closestIStart = frameRect.IEnd(wm); |
| 6272 | } |
| 6273 | } else { |
| 6274 | if (frameRect.IStart(wm) <= closestIEnd) { |
| 6275 | closestFromIEnd = frame; |
| 6276 | closestIEnd = frameRect.IStart(wm); |
| 6277 | } |
| 6278 | } |
| 6279 | } |
| 6280 | if (!closestFromIStart && !closestFromIEnd) { |
| 6281 | // We should only get here if there are no selectable frames on a line |
| 6282 | // XXX Do we need more elaborate handling here? |
| 6283 | return FrameTarget(); |
| 6284 | } |
| 6285 | if (closestFromIStart && |
| 6286 | (!closestFromIEnd || |
| 6287 | (abs(pt.I(wm) - closestIStart) <= abs(pt.I(wm) - closestIEnd)))) { |
| 6288 | return GetSelectionClosestFrameForChild(closestFromIStart, aPoint, aFlags); |
| 6289 | } |
| 6290 | return GetSelectionClosestFrameForChild(closestFromIEnd, aPoint, aFlags); |
| 6291 | } |
| 6292 | |
| 6293 | // This method is for the special handling we do for block frames; they're |
| 6294 | // special because they represent paragraphs and because they are organized |
| 6295 | // into lines, which have bounds that are not stored elsewhere in the |
| 6296 | // frame tree. Returns a null FrameTarget for frames which are not |
| 6297 | // blocks or blocks with no lines except editable one. |
| 6298 | static FrameTarget GetSelectionClosestFrameForBlock(nsIFrame* aFrame, |
| 6299 | const nsPoint& aPoint, |
| 6300 | uint32_t aFlags) { |
| 6301 | nsBlockFrame* bf = do_QueryFrame(aFrame); |
| 6302 | if (!bf) { |
| 6303 | return FrameTarget(); |
| 6304 | } |
| 6305 | |
| 6306 | // This code searches for the correct line |
| 6307 | nsBlockFrame::LineIterator end = bf->LinesEnd(); |
| 6308 | nsBlockFrame::LineIterator curLine = bf->LinesBegin(); |
| 6309 | nsBlockFrame::LineIterator closestLine = end; |
| 6310 | |
| 6311 | if (curLine != end) { |
| 6312 | // Convert aPoint into a LogicalPoint in the writing-mode of this block |
| 6313 | WritingMode wm = curLine->mWritingMode; |
| 6314 | LogicalPoint pt(wm, aPoint, curLine->mContainerSize); |
| 6315 | do { |
| 6316 | // Check to see if our point lies within the line's block-direction bounds |
| 6317 | nscoord BCoord = pt.B(wm) - curLine->BStart(); |
| 6318 | nscoord BSize = curLine->BSize(); |
| 6319 | if (BCoord >= 0 && BCoord < BSize) { |
| 6320 | closestLine = curLine; |
| 6321 | break; // We found the line; stop looking |
| 6322 | } |
| 6323 | if (BCoord < 0) { |
| 6324 | break; |
| 6325 | } |
| 6326 | ++curLine; |
| 6327 | } while (curLine != end); |
| 6328 | |
| 6329 | if (closestLine == end) { |
| 6330 | nsBlockFrame::LineIterator prevLine = curLine.prev(); |
| 6331 | nsBlockFrame::LineIterator nextLine = curLine; |
| 6332 | // Avoid empty lines |
| 6333 | while (nextLine != end && nextLine->IsEmpty()) { |
| 6334 | ++nextLine; |
| 6335 | } |
| 6336 | while (prevLine != end && prevLine->IsEmpty()) { |
| 6337 | --prevLine; |
| 6338 | } |
| 6339 | |
| 6340 | // This hidden pref dictates whether a point above or below all lines |
| 6341 | // comes up with a line or the beginning or end of the frame; 0 on |
| 6342 | // Windows, 1 on other platforms by default at the writing of this code |
| 6343 | int32_t dragOutOfFrame = |
| 6344 | Preferences::GetInt("browser.drag_out_of_frame_style"); |
| 6345 | |
| 6346 | if (prevLine == end) { |
| 6347 | if (dragOutOfFrame == 1 || nextLine == end) { |
| 6348 | return DrillDownToSelectionFrame(aFrame, false, aFlags); |
| 6349 | } |
| 6350 | closestLine = nextLine; |
| 6351 | } else if (nextLine == end) { |
| 6352 | if (dragOutOfFrame == 1) { |
| 6353 | return DrillDownToSelectionFrame(aFrame, true, aFlags); |
| 6354 | } |
| 6355 | closestLine = prevLine; |
| 6356 | } else { // Figure out which line is closer |
| 6357 | if (pt.B(wm) - prevLine->BEnd() < nextLine->BStart() - pt.B(wm)) { |
| 6358 | closestLine = prevLine; |
| 6359 | } else { |
| 6360 | closestLine = nextLine; |
| 6361 | } |
| 6362 | } |
| 6363 | } |
| 6364 | } |
| 6365 | |
| 6366 | do { |
| 6367 | if (auto target = |
| 6368 | GetSelectionClosestFrameForLine(bf, closestLine, aPoint, aFlags)) { |
| 6369 | return target; |
| 6370 | } |
| 6371 | ++closestLine; |
| 6372 | } while (closestLine != end); |
| 6373 | |
| 6374 | // Fall back to just targeting the last targetable place |
| 6375 | return DrillDownToSelectionFrame(aFrame, true, aFlags); |
| 6376 | } |
| 6377 | |
| 6378 | // Use frame edge for grid, flex, table, and non-editable images. Choose the |
| 6379 | // edge based on the point position past the frame rect. If past the middle, |
| 6380 | // caret should be at end, otherwise at start. This behavior matches Blink. |
| 6381 | // |
| 6382 | // TODO(emilio): Can we use this code path for all other frames? We only get |
| 6383 | // there when we didn't find selectable children... Editable images need _not_ |
| 6384 | // to use the frame edge tho, see below. |
| 6385 | static bool UseFrameEdge(nsIFrame* aFrame) { |
| 6386 | if (aFrame->IsFlexOrGridContainer() || aFrame->IsTableFrame()) { |
| 6387 | return true; |
| 6388 | } |
| 6389 | // FIXME(bug 713387): The text frame check here shouldn't be needed. |
| 6390 | if (aFrame->IsReplaced() && !aFrame->IsTextFrame() && |
| 6391 | !aFrame->GetContent()->IsEditable()) { |
| 6392 | // Editable replaced elements are a special-case because editing relies |
| 6393 | // on clicking on an editable image selecting it, for it to show resizers. |
| 6394 | return true; |
| 6395 | } |
| 6396 | return false; |
| 6397 | } |
| 6398 | |
| 6399 | static FrameTarget LastResortFrameTargetForFrame(nsIFrame* aFrame, |
| 6400 | const nsPoint& aPoint) { |
| 6401 | if (!UseFrameEdge(aFrame)) { |
| 6402 | return {aFrame, false, false}; |
| 6403 | } |
| 6404 | const auto& rect = aFrame->GetRectRelativeToSelf(); |
| 6405 | nscoord reference; |
| 6406 | nscoord middle; |
| 6407 | if (aFrame->GetWritingMode().IsVertical()) { |
| 6408 | reference = aPoint.y; |
| 6409 | middle = rect.Height() / 2; |
| 6410 | } else { |
| 6411 | reference = aPoint.x; |
| 6412 | middle = rect.Width() / 2; |
| 6413 | } |
| 6414 | const bool afterFrame = reference > middle; |
| 6415 | return {aFrame, true, afterFrame}; |
| 6416 | } |
| 6417 | |
| 6418 | // GetSelectionClosestFrame is the helper function that calculates the closest |
| 6419 | // frame to the given point. |
| 6420 | // It doesn't completely account for offset styles, so needs to be used in |
| 6421 | // restricted environments. |
| 6422 | // Cannot handle overlapping frames correctly, so it should receive the output |
| 6423 | // of GetFrameForPoint |
| 6424 | // Guaranteed to return a valid FrameTarget. |
| 6425 | // aPoint is relative to aFrame. |
| 6426 | static FrameTarget GetSelectionClosestFrame(nsIFrame* aFrame, |
| 6427 | const nsPoint& aPoint, |
| 6428 | uint32_t aFlags) { |
| 6429 | // Handle blocks; if the frame isn't a block, the method fails |
| 6430 | if (auto target = GetSelectionClosestFrameForBlock(aFrame, aPoint, aFlags)) { |
| 6431 | return target; |
| 6432 | } |
| 6433 | |
| 6434 | if (aFlags & nsIFrame::IGNORE_NATIVE_ANONYMOUS_SUBTREE && |
| 6435 | !FrameContentCanHaveParentSelectionRange(aFrame)) { |
| 6436 | return LastResortFrameTargetForFrame(aFrame, aPoint); |
| 6437 | } |
| 6438 | |
| 6439 | if (nsIFrame* kid = aFrame->PrincipalChildList().FirstChild()) { |
| 6440 | // Go through all the child frames to find the closest one |
| 6441 | nsIFrame::FrameWithDistance closest = {nullptr, nscoord_MAX, nscoord_MAX}; |
| 6442 | for (; kid; kid = kid->GetNextSibling()) { |
| 6443 | if (!SelfIsSelectable(kid, aFrame, aFlags)) { |
| 6444 | continue; |
| 6445 | } |
| 6446 | |
| 6447 | kid->FindCloserFrameForSelection(aPoint, &closest); |
| 6448 | } |
| 6449 | if (closest.mFrame) { |
| 6450 | if (closest.mFrame->IsInSVGTextSubtree()) { |
| 6451 | return FrameTarget{closest.mFrame, false, false}; |
| 6452 | } |
| 6453 | return GetSelectionClosestFrameForChild(closest.mFrame, aPoint, aFlags); |
| 6454 | } |
| 6455 | } |
| 6456 | |
| 6457 | return LastResortFrameTargetForFrame(aFrame, aPoint); |
| 6458 | } |
| 6459 | |
| 6460 | static nsIFrame::ContentOffsets OffsetsForSingleFrame(nsIFrame* aFrame, |
| 6461 | const nsPoint& aPoint) { |
| 6462 | nsIFrame::ContentOffsets offsets; |
| 6463 | FrameContentRange range = GetRangeForFrame(aFrame); |
| 6464 | offsets.content = range.content; |
| 6465 | // If there are continuations (meaning it's not one rectangle), this is the |
| 6466 | // best this function can do |
| 6467 | if (aFrame->GetNextContinuation() || aFrame->GetPrevContinuation()) { |
| 6468 | offsets.offset = range.start; |
| 6469 | offsets.secondaryOffset = range.end; |
| 6470 | offsets.associate = CaretAssociationHint::After; |
| 6471 | return offsets; |
| 6472 | } |
| 6473 | |
| 6474 | // Figure out whether the offsets should be over, after, or before the frame |
| 6475 | nsRect rect(nsPoint(0, 0), aFrame->GetSize()); |
| 6476 | |
| 6477 | bool isBlock = !aFrame->StyleDisplay()->IsInlineFlow(); |
| 6478 | bool isRtl = (aFrame->StyleVisibility()->mDirection == StyleDirection::Rtl); |
| 6479 | if ((isBlock && rect.y < aPoint.y) || |
| 6480 | (!isBlock && ((isRtl && rect.x + rect.width / 2 > aPoint.x) || |
| 6481 | (!isRtl && rect.x + rect.width / 2 < aPoint.x)))) { |
| 6482 | offsets.offset = range.end; |
| 6483 | if (rect.Contains(aPoint)) { |
| 6484 | offsets.secondaryOffset = range.start; |
| 6485 | } else { |
| 6486 | offsets.secondaryOffset = range.end; |
| 6487 | } |
| 6488 | } else { |
| 6489 | offsets.offset = range.start; |
| 6490 | if (rect.Contains(aPoint)) { |
| 6491 | offsets.secondaryOffset = range.end; |
| 6492 | } else { |
| 6493 | offsets.secondaryOffset = range.start; |
| 6494 | } |
| 6495 | } |
| 6496 | offsets.associate = offsets.offset == range.start |
| 6497 | ? CaretAssociationHint::After |
| 6498 | : CaretAssociationHint::Before; |
| 6499 | return offsets; |
| 6500 | } |
| 6501 | |
| 6502 | static nsIFrame* AdjustFrameForSelectionStyles(nsIFrame* aFrame) { |
| 6503 | nsIFrame* adjustedFrame = aFrame; |
| 6504 | for (nsIFrame* frame = aFrame; frame; frame = frame->GetParent()) { |
| 6505 | // These are the conditions that make all children not able to handle |
| 6506 | // a cursor. |
| 6507 | auto userSelect = frame->Style()->UserSelect(); |
| 6508 | if (userSelect != StyleUserSelect::Auto && |
| 6509 | userSelect != StyleUserSelect::All) { |
| 6510 | break; |
| 6511 | } |
| 6512 | if (userSelect == StyleUserSelect::All || |
| 6513 | frame->IsGeneratedContentFrame()) { |
| 6514 | adjustedFrame = frame; |
| 6515 | } |
| 6516 | } |
| 6517 | return adjustedFrame; |
| 6518 | } |
| 6519 | |
| 6520 | nsIFrame::ContentOffsets nsIFrame::GetContentOffsetsFromPoint( |
| 6521 | const nsPoint& aPoint, uint32_t aFlags) { |
| 6522 | nsIFrame* adjustedFrame; |
| 6523 | if (aFlags & IGNORE_SELECTION_STYLE) { |
| 6524 | adjustedFrame = this; |
| 6525 | } else { |
| 6526 | // This section of code deals with special selection styles. Note that |
| 6527 | // -moz-all exists, even though it doesn't need to be explicitly handled. |
| 6528 | // |
| 6529 | // The offset is forced not to end up in generated content; content offsets |
| 6530 | // cannot represent content outside of the document's content tree. |
| 6531 | |
| 6532 | adjustedFrame = AdjustFrameForSelectionStyles(this); |
| 6533 | |
| 6534 | // `user-select: all` needs special handling, because clicking on it should |
| 6535 | // lead to the whole frame being selected. |
| 6536 | if (adjustedFrame->Style()->UserSelect() == StyleUserSelect::All) { |
| 6537 | nsPoint adjustedPoint = aPoint + GetOffsetTo(adjustedFrame); |
| 6538 | return OffsetsForSingleFrame(adjustedFrame, adjustedPoint); |
| 6539 | } |
| 6540 | |
| 6541 | // For other cases, try to find a closest frame starting from the parent of |
| 6542 | // the unselectable frame |
| 6543 | if (adjustedFrame != this) { |
| 6544 | adjustedFrame = adjustedFrame->GetParent(); |
| 6545 | } |
| 6546 | } |
| 6547 | |
| 6548 | nsPoint adjustedPoint = aPoint + GetOffsetTo(adjustedFrame); |
| 6549 | |
| 6550 | FrameTarget closest = |
| 6551 | GetSelectionClosestFrame(adjustedFrame, adjustedPoint, aFlags); |
| 6552 | |
| 6553 | // If the correct offset is at one end of a frame, use offset-based |
| 6554 | // calculation method |
| 6555 | if (closest.frameEdge) { |
| 6556 | ContentOffsets offsets; |
| 6557 | bool includeReplaced = (aFlags & INCLUDE_REPLACED) != 0; |
| 6558 | FrameContentRange range = GetRangeForFrame(closest.frame, includeReplaced); |
| 6559 | offsets.content = range.content; |
| 6560 | if (closest.afterFrame) { |
| 6561 | offsets.offset = range.end; |
| 6562 | } else { |
| 6563 | offsets.offset = range.start; |
| 6564 | } |
| 6565 | offsets.secondaryOffset = offsets.offset; |
| 6566 | offsets.associate = offsets.offset == range.start |
| 6567 | ? CaretAssociationHint::After |
| 6568 | : CaretAssociationHint::Before; |
| 6569 | return offsets; |
| 6570 | } |
| 6571 | |
| 6572 | nsPoint pt; |
| 6573 | if (closest.frame != this) { |
| 6574 | if (closest.frame->IsInSVGTextSubtree()) { |
| 6575 | pt = nsLayoutUtils::TransformAncestorPointToFrame( |
| 6576 | RelativeTo{closest.frame}, aPoint, RelativeTo{this}); |
| 6577 | } else { |
| 6578 | pt = aPoint - closest.frame->GetOffsetTo(this); |
| 6579 | } |
| 6580 | } else { |
| 6581 | pt = aPoint; |
| 6582 | } |
| 6583 | return closest.frame->CalcContentOffsetsFromFramePoint(pt); |
| 6584 | |
| 6585 | // XXX should I add some kind of offset standardization? |
| 6586 | // consider <b>xxxxx</b><i>zzzzz</i>; should any click between the last |
| 6587 | // x and first z put the cursor in the same logical position in addition |
| 6588 | // to the same visual position? |
| 6589 | } |
| 6590 | |
| 6591 | nsIFrame::ContentOffsets nsIFrame::CalcContentOffsetsFromFramePoint( |
| 6592 | const nsPoint& aPoint) { |
| 6593 | return OffsetsForSingleFrame(this, aPoint); |
| 6594 | } |
| 6595 | |
| 6596 | bool nsIFrame::AssociateImage(const StyleImage& aImage) { |
| 6597 | imgRequestProxy* req = aImage.GetImageRequest(); |
| 6598 | if (!req) { |
| 6599 | return false; |
| 6600 | } |
| 6601 | |
| 6602 | PresContext()->Document()->EnsureStyleImageLoader().AssociateRequestToFrame( |
| 6603 | req, this); |
| 6604 | return true; |
| 6605 | } |
| 6606 | |
| 6607 | void nsIFrame::DisassociateImage(const StyleImage& aImage) { |
| 6608 | imgRequestProxy* req = aImage.GetImageRequest(); |
| 6609 | if (!req) { |
| 6610 | return; |
| 6611 | } |
| 6612 | |
| 6613 | PresContext() |
| 6614 | ->Document() |
| 6615 | ->EnsureStyleImageLoader() |
| 6616 | .DisassociateRequestFromFrame(req, this); |
| 6617 | } |
| 6618 | |
| 6619 | const ComputedStyle* nsIFrame::UsedStyleForImages() const { |
| 6620 | if (IsCanvasFrame()) { |
| 6621 | // XXXdholbert Maybe we should use FindCanvasBackground here (instead of |
| 6622 | // FindBackground), since we're inside an IsCanvasFrame check? Though then |
| 6623 | // we'd also have to copypaste or abstract-away the multi-part root-frame |
| 6624 | // lookup that the canvas-flavored API requires. |
| 6625 | return nsCSSRendering::FindBackground(this); |
| 6626 | } |
| 6627 | return Style(); |
| 6628 | } |
| 6629 | |
| 6630 | // The touch-action CSS property applies to: all elements except: non-replaced |
| 6631 | // inline elements, table rows, row groups, table columns, and column groups. |
| 6632 | StyleTouchAction nsIFrame::UsedTouchAction() const { |
| 6633 | if (IsLineParticipant()) { |
| 6634 | return StyleTouchAction::AUTO; |
| 6635 | } |
| 6636 | auto& disp = *StyleDisplay(); |
| 6637 | if (disp.IsInternalTableStyleExceptCell()) { |
| 6638 | return StyleTouchAction::AUTO; |
| 6639 | } |
| 6640 | return disp.mTouchAction; |
| 6641 | } |
| 6642 | |
| 6643 | nsIFrame::Cursor nsIFrame::GetCursor(const nsPoint&) { |
| 6644 | StyleCursorKind kind = StyleUI()->Cursor().keyword; |
| 6645 | if (kind == StyleCursorKind::Auto) { |
| 6646 | // If this is editable, I-beam cursor is better for most elements. |
| 6647 | kind = (mContent && mContent->IsEditable()) ? StyleCursorKind::Text |
| 6648 | : StyleCursorKind::Default; |
| 6649 | } |
| 6650 | if (kind == StyleCursorKind::Text && GetWritingMode().IsVertical()) { |
| 6651 | // Per CSS UI spec, UA may treat value 'text' as |
| 6652 | // 'vertical-text' for vertical text. |
| 6653 | kind = StyleCursorKind::VerticalText; |
| 6654 | } |
| 6655 | |
| 6656 | return Cursor{kind, AllowCustomCursorImage::Yes}; |
| 6657 | } |
| 6658 | |
| 6659 | // Resize and incremental reflow |
| 6660 | |
| 6661 | /* virtual */ |
| 6662 | void nsIFrame::MarkIntrinsicISizesDirty() { |
| 6663 | // If we're a flex item, clear our flex-item-specific cached measurements |
| 6664 | // (which likely depended on our now-stale intrinsic isize). |
| 6665 | if (IsFlexItem()) { |
| 6666 | nsFlexContainerFrame::MarkCachedFlexMeasurementsDirty(this); |
| 6667 | } |
| 6668 | |
| 6669 | if (IsGridItem()) { |
| 6670 | nsGridContainerFrame::MarkCachedGridMeasurementsDirty(this); |
| 6671 | } |
| 6672 | |
| 6673 | if (HasAnyStateBits(NS_FRAME_FONT_INFLATION_FLOW_ROOT)) { |
| 6674 | nsFontInflationData::MarkFontInflationDataTextDirty(this); |
| 6675 | } |
| 6676 | } |
| 6677 | |
| 6678 | void nsIFrame::MarkSubtreeDirty() { |
| 6679 | if (HasAnyStateBits(NS_FRAME_IS_DIRTY)) { |
| 6680 | return; |
| 6681 | } |
| 6682 | // Unconditionally mark given frame dirty. |
| 6683 | AddStateBits(NS_FRAME_IS_DIRTY); |
| 6684 | |
| 6685 | // Mark all descendants dirty, unless: |
| 6686 | // - Already dirty. |
| 6687 | // - TableColGroup |
| 6688 | AutoTArray<nsIFrame*, 32> stack; |
| 6689 | for (const auto& childLists : ChildLists()) { |
| 6690 | for (nsIFrame* kid : childLists.mList) { |
| 6691 | stack.AppendElement(kid); |
| 6692 | } |
| 6693 | } |
| 6694 | while (!stack.IsEmpty()) { |
| 6695 | nsIFrame* f = stack.PopLastElement(); |
| 6696 | if (f->HasAnyStateBits(NS_FRAME_IS_DIRTY) || f->IsTableColGroupFrame()) { |
| 6697 | continue; |
| 6698 | } |
| 6699 | |
| 6700 | f->AddStateBits(NS_FRAME_IS_DIRTY); |
| 6701 | |
| 6702 | for (const auto& childLists : f->ChildLists()) { |
| 6703 | for (nsIFrame* kid : childLists.mList) { |
| 6704 | stack.AppendElement(kid); |
| 6705 | } |
| 6706 | } |
| 6707 | } |
| 6708 | } |
| 6709 | |
| 6710 | void nsIFrame::MarkPrincipalChildrenDirty() { |
| 6711 | for (nsIFrame* childFrame : PrincipalChildList()) { |
| 6712 | childFrame->MarkSubtreeDirty(); |
| 6713 | } |
| 6714 | } |
| 6715 | |
| 6716 | /* virtual */ |
| 6717 | void nsIFrame::AddInlineMinISize(const IntrinsicSizeInput& aInput, |
| 6718 | InlineMinISizeData* aData) { |
| 6719 | // Note: we are one of the children that mPercentageBasisForChildren was |
| 6720 | // prepared for (i.e. our parent frame prepares the percentage basis for us, |
| 6721 | // not for our own children). Hence it's fine that we're resolving our |
| 6722 | // percentages sizes against this basis in IntrinsicForContainer(). |
| 6723 | nscoord isize = nsLayoutUtils::IntrinsicForContainer( |
| 6724 | aInput.mContext, this, IntrinsicISizeType::MinISize, |
| 6725 | aInput.mPercentageBasisForChildren); |
| 6726 | aData->DefaultAddInlineMinISize(this, isize); |
| 6727 | } |
| 6728 | |
| 6729 | /* virtual */ |
| 6730 | void nsIFrame::AddInlinePrefISize(const IntrinsicSizeInput& aInput, |
| 6731 | nsIFrame::InlinePrefISizeData* aData) { |
| 6732 | // Note: we are one of the children that mPercentageBasisForChildren was |
| 6733 | // prepared for (i.e. our parent frame prepares the percentage basis for us, |
| 6734 | // not for our own children). Hence it's fine that we're resolving our |
| 6735 | // percentages sizes against this basis in IntrinsicForContainer(). |
| 6736 | nscoord isize = nsLayoutUtils::IntrinsicForContainer( |
| 6737 | aInput.mContext, this, IntrinsicISizeType::PrefISize, |
| 6738 | aInput.mPercentageBasisForChildren); |
| 6739 | aData->DefaultAddInlinePrefISize(isize); |
| 6740 | } |
| 6741 | |
| 6742 | void nsIFrame::InlineMinISizeData::DefaultAddInlineMinISize(nsIFrame* aFrame, |
| 6743 | nscoord aISize, |
| 6744 | bool aAllowBreak) { |
| 6745 | auto parent = aFrame->GetParent(); |
| 6746 | MOZ_ASSERT(parent, "Must have a parent if we get here!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(parent)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(parent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("parent" " (" "Must have a parent if we get here!" ")", "./../../../layout/generic/nsIFrame.cpp", 6746); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "parent" ") (" "Must have a parent if we get here!" ")"); do { MOZ_CrashSequence(__null, 6746); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6747 | const bool mayBreak = aAllowBreak && !aFrame->CanContinueTextRun() && |
| 6748 | !parent->Style()->ShouldSuppressLineBreak() && |
| 6749 | parent->StyleText()->WhiteSpaceCanWrap(parent); |
| 6750 | if (mayBreak) { |
| 6751 | OptionallyBreak(); |
| 6752 | } |
| 6753 | mTrailingWhitespace = 0; |
| 6754 | mSkipWhitespace = false; |
| 6755 | mCurrentLine += aISize; |
| 6756 | mAtStartOfLine = false; |
| 6757 | if (mayBreak) { |
| 6758 | OptionallyBreak(); |
| 6759 | } |
| 6760 | } |
| 6761 | |
| 6762 | void nsIFrame::InlinePrefISizeData::DefaultAddInlinePrefISize(nscoord aISize) { |
| 6763 | mCurrentLine = NSCoordSaturatingAdd(mCurrentLine, aISize); |
| 6764 | mTrailingWhitespace = 0; |
| 6765 | mSkipWhitespace = false; |
| 6766 | mLineIsEmpty = false; |
| 6767 | } |
| 6768 | |
| 6769 | void nsIFrame::InlineMinISizeData::ForceBreak() { |
| 6770 | mCurrentLine -= mTrailingWhitespace; |
| 6771 | mPrevLines = std::max(mPrevLines, mCurrentLine); |
| 6772 | mCurrentLine = mTrailingWhitespace = 0; |
| 6773 | |
| 6774 | for (const FloatInfo& floatInfo : mFloats) { |
| 6775 | mPrevLines = std::max(floatInfo.ISize(), mPrevLines); |
| 6776 | } |
| 6777 | mFloats.Clear(); |
| 6778 | mSkipWhitespace = true; |
| 6779 | } |
| 6780 | |
| 6781 | void nsIFrame::InlineMinISizeData::OptionallyBreak(nscoord aHyphenWidth) { |
| 6782 | // If we can fit more content into a smaller width by staying on this |
| 6783 | // line (because we're still at a negative offset due to negative |
| 6784 | // text-indent or negative margin), don't break. Otherwise, do the |
| 6785 | // same as ForceBreak. it doesn't really matter when we accumulate |
| 6786 | // floats. |
| 6787 | if (mCurrentLine + aHyphenWidth < 0 || mAtStartOfLine) { |
| 6788 | return; |
| 6789 | } |
| 6790 | mCurrentLine += aHyphenWidth; |
| 6791 | ForceBreak(); |
| 6792 | } |
| 6793 | |
| 6794 | void nsIFrame::InlinePrefISizeData::ForceBreak(UsedClear aClearType) { |
| 6795 | // If this force break is not clearing any float, we can leave all the |
| 6796 | // floats to the next force break. |
| 6797 | if (!mFloats.IsEmpty() && aClearType != UsedClear::None) { |
| 6798 | // Preferred isize accumulated for floats that have already |
| 6799 | // been cleared past |
| 6800 | nscoord floatsDone = 0; |
| 6801 | // Preferred isize accumulated for floats that have not yet |
| 6802 | // been cleared past |
| 6803 | nscoord floatsCurLeft = 0, floatsCurRight = 0; |
| 6804 | |
| 6805 | for (const FloatInfo& floatInfo : mFloats) { |
| 6806 | const nsStyleDisplay* floatDisp = floatInfo.Frame()->StyleDisplay(); |
| 6807 | auto cbWM = floatInfo.Frame()->GetParent()->GetWritingMode(); |
| 6808 | UsedClear clearType = floatDisp->UsedClear(cbWM); |
| 6809 | if (clearType == UsedClear::Left || clearType == UsedClear::Right || |
| 6810 | clearType == UsedClear::Both) { |
| 6811 | nscoord floatsCur = NSCoordSaturatingAdd(floatsCurLeft, floatsCurRight); |
| 6812 | if (floatsCur > floatsDone) { |
| 6813 | floatsDone = floatsCur; |
| 6814 | } |
| 6815 | if (clearType != UsedClear::Right) { |
| 6816 | floatsCurLeft = 0; |
| 6817 | } |
| 6818 | if (clearType != UsedClear::Left) { |
| 6819 | floatsCurRight = 0; |
| 6820 | } |
| 6821 | } |
| 6822 | |
| 6823 | UsedFloat floatStyle = floatDisp->UsedFloat(cbWM); |
| 6824 | nscoord& floatsCur = |
| 6825 | floatStyle == UsedFloat::Left ? floatsCurLeft : floatsCurRight; |
| 6826 | nscoord floatISize = floatInfo.ISize(); |
| 6827 | // Negative-width floats don't change the available space so they |
| 6828 | // shouldn't change our intrinsic line isize either. |
| 6829 | floatsCur = NSCoordSaturatingAdd(floatsCur, std::max(0, floatISize)); |
| 6830 | } |
| 6831 | |
| 6832 | nscoord floatsCur = NSCoordSaturatingAdd(floatsCurLeft, floatsCurRight); |
| 6833 | if (floatsCur > floatsDone) { |
| 6834 | floatsDone = floatsCur; |
| 6835 | } |
| 6836 | |
| 6837 | mCurrentLine = NSCoordSaturatingAdd(mCurrentLine, floatsDone); |
| 6838 | |
| 6839 | if (aClearType == UsedClear::Both) { |
| 6840 | mFloats.Clear(); |
| 6841 | } else { |
| 6842 | // If the break type does not clear all floats, it means there may |
| 6843 | // be some floats whose isize should contribute to the intrinsic |
| 6844 | // isize of the next line. The code here scans the current mFloats |
| 6845 | // and keeps floats which are not cleared by this break. Note that |
| 6846 | // floats may be cleared directly or indirectly. See below. |
| 6847 | nsTArray<FloatInfo> newFloats; |
| 6848 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(aClearType == UsedClear::Left || aClearType == UsedClear ::Right)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aClearType == UsedClear::Left || aClearType == UsedClear ::Right))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aClearType == UsedClear::Left || aClearType == UsedClear::Right" " (" "Other values should have been handled in other branches" ")", "./../../../layout/generic/nsIFrame.cpp", 6850); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aClearType == UsedClear::Left || aClearType == UsedClear::Right" ") (" "Other values should have been handled in other branches" ")"); do { MOZ_CrashSequence(__null, 6850); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6849 | aClearType == UsedClear::Left || aClearType == UsedClear::Right,do { static_assert( mozilla::detail::AssertionConditionType< decltype(aClearType == UsedClear::Left || aClearType == UsedClear ::Right)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aClearType == UsedClear::Left || aClearType == UsedClear ::Right))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aClearType == UsedClear::Left || aClearType == UsedClear::Right" " (" "Other values should have been handled in other branches" ")", "./../../../layout/generic/nsIFrame.cpp", 6850); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aClearType == UsedClear::Left || aClearType == UsedClear::Right" ") (" "Other values should have been handled in other branches" ")"); do { MOZ_CrashSequence(__null, 6850); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6850 | "Other values should have been handled in other branches")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aClearType == UsedClear::Left || aClearType == UsedClear ::Right)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aClearType == UsedClear::Left || aClearType == UsedClear ::Right))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aClearType == UsedClear::Left || aClearType == UsedClear::Right" " (" "Other values should have been handled in other branches" ")", "./../../../layout/generic/nsIFrame.cpp", 6850); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aClearType == UsedClear::Left || aClearType == UsedClear::Right" ") (" "Other values should have been handled in other branches" ")"); do { MOZ_CrashSequence(__null, 6850); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6851 | UsedFloat clearFloatType = |
| 6852 | aClearType == UsedClear::Left ? UsedFloat::Left : UsedFloat::Right; |
| 6853 | // Iterate the array in reverse so that we can stop when there are |
| 6854 | // no longer any floats we need to keep. See below. |
| 6855 | for (FloatInfo& floatInfo : Reversed(mFloats)) { |
| 6856 | const nsStyleDisplay* floatDisp = floatInfo.Frame()->StyleDisplay(); |
| 6857 | auto cbWM = floatInfo.Frame()->GetParent()->GetWritingMode(); |
| 6858 | if (floatDisp->UsedFloat(cbWM) != clearFloatType) { |
| 6859 | newFloats.AppendElement(floatInfo); |
| 6860 | } else { |
| 6861 | // This is a float on the side that this break directly clears |
| 6862 | // which means we're not keeping it in mFloats. However, if |
| 6863 | // this float clears floats on the opposite side (via a value |
| 6864 | // of either 'both' or one of 'left'/'right'), any remaining |
| 6865 | // (earlier) floats on that side would be indirectly cleared |
| 6866 | // as well. Thus, we should break out of this loop and stop |
| 6867 | // considering earlier floats to be kept in mFloats. |
| 6868 | UsedClear clearType = floatDisp->UsedClear(cbWM); |
| 6869 | if (clearType != aClearType && clearType != UsedClear::None) { |
| 6870 | break; |
| 6871 | } |
| 6872 | } |
| 6873 | } |
| 6874 | newFloats.Reverse(); |
| 6875 | mFloats = std::move(newFloats); |
| 6876 | } |
| 6877 | } |
| 6878 | |
| 6879 | mCurrentLine = |
| 6880 | NSCoordSaturatingSubtract(mCurrentLine, mTrailingWhitespace, nscoord_MAX); |
| 6881 | mPrevLines = std::max(mPrevLines, mCurrentLine); |
| 6882 | mCurrentLine = mTrailingWhitespace = 0; |
| 6883 | mSkipWhitespace = true; |
| 6884 | mLineIsEmpty = true; |
| 6885 | } |
| 6886 | |
| 6887 | static nscoord ResolvePadding(const LengthPercentage& aStyle, |
| 6888 | nscoord aPercentageBasis) { |
| 6889 | return nsLayoutUtils::ResolveToLength<true>(aStyle, aPercentageBasis); |
| 6890 | } |
| 6891 | |
| 6892 | static nscoord ResolveMargin(const AnchorResolvedMargin& aStyle, |
| 6893 | nscoord aPercentageBasis) { |
| 6894 | if (!aStyle->IsLengthPercentage()) { |
| 6895 | return nscoord(0); |
| 6896 | } |
| 6897 | return nsLayoutUtils::ResolveToLength<false>(aStyle->AsLengthPercentage(), |
| 6898 | aPercentageBasis); |
| 6899 | } |
| 6900 | static nsIFrame::IntrinsicSizeOffsetData IntrinsicSizeOffsets( |
| 6901 | nsIFrame* aFrame, nscoord aPercentageBasis, bool aForISize) { |
| 6902 | nsIFrame::IntrinsicSizeOffsetData result; |
| 6903 | WritingMode wm = aFrame->GetWritingMode(); |
| 6904 | bool verticalAxis = aForISize == wm.IsVertical(); |
| 6905 | const auto* styleMargin = aFrame->StyleMargin(); |
| 6906 | const auto anchorResolutionParams = AnchorPosResolutionParams::From(aFrame); |
| 6907 | if (verticalAxis) { |
| 6908 | result.margin += |
| 6909 | ResolveMargin(styleMargin->GetMargin(eSideTop, anchorResolutionParams), |
| 6910 | aPercentageBasis); |
| 6911 | result.margin += ResolveMargin( |
| 6912 | styleMargin->GetMargin(eSideBottom, anchorResolutionParams), |
| 6913 | aPercentageBasis); |
| 6914 | } else { |
| 6915 | result.margin += |
| 6916 | ResolveMargin(styleMargin->GetMargin(eSideLeft, anchorResolutionParams), |
| 6917 | aPercentageBasis); |
| 6918 | result.margin += ResolveMargin( |
| 6919 | styleMargin->GetMargin(eSideRight, anchorResolutionParams), |
| 6920 | aPercentageBasis); |
| 6921 | } |
| 6922 | |
| 6923 | const auto& padding = aFrame->StylePadding()->mPadding; |
| 6924 | if (verticalAxis) { |
| 6925 | result.padding += ResolvePadding(padding.Get(eSideTop), aPercentageBasis); |
| 6926 | result.padding += |
| 6927 | ResolvePadding(padding.Get(eSideBottom), aPercentageBasis); |
| 6928 | } else { |
| 6929 | result.padding += ResolvePadding(padding.Get(eSideLeft), aPercentageBasis); |
| 6930 | result.padding += ResolvePadding(padding.Get(eSideRight), aPercentageBasis); |
| 6931 | } |
| 6932 | |
| 6933 | const nsStyleBorder* styleBorder = aFrame->StyleBorder(); |
| 6934 | if (verticalAxis) { |
| 6935 | result.border += styleBorder->GetComputedBorderWidth(eSideTop); |
| 6936 | result.border += styleBorder->GetComputedBorderWidth(eSideBottom); |
| 6937 | } else { |
| 6938 | result.border += styleBorder->GetComputedBorderWidth(eSideLeft); |
| 6939 | result.border += styleBorder->GetComputedBorderWidth(eSideRight); |
| 6940 | } |
| 6941 | |
| 6942 | const nsStyleDisplay* disp = aFrame->StyleDisplay(); |
| 6943 | if (aFrame->IsThemed(disp)) { |
| 6944 | nsPresContext* presContext = aFrame->PresContext(); |
| 6945 | |
| 6946 | LayoutDeviceIntMargin border = presContext->Theme()->GetWidgetBorder( |
| 6947 | presContext->DeviceContext(), aFrame, disp->EffectiveAppearance()); |
| 6948 | result.border = presContext->DevPixelsToAppUnits( |
| 6949 | verticalAxis ? border.TopBottom() : border.LeftRight()); |
| 6950 | |
| 6951 | LayoutDeviceIntMargin padding; |
| 6952 | if (presContext->Theme()->GetWidgetPadding( |
| 6953 | presContext->DeviceContext(), aFrame, disp->EffectiveAppearance(), |
| 6954 | &padding)) { |
| 6955 | result.padding = presContext->DevPixelsToAppUnits( |
| 6956 | verticalAxis ? padding.TopBottom() : padding.LeftRight()); |
| 6957 | } |
| 6958 | } |
| 6959 | return result; |
| 6960 | } |
| 6961 | |
| 6962 | /* virtual */ nsIFrame::IntrinsicSizeOffsetData nsIFrame::IntrinsicISizeOffsets( |
| 6963 | nscoord aPercentageBasis) { |
| 6964 | return IntrinsicSizeOffsets(this, aPercentageBasis, true); |
| 6965 | } |
| 6966 | |
| 6967 | nsIFrame::IntrinsicSizeOffsetData nsIFrame::IntrinsicBSizeOffsets( |
| 6968 | nscoord aPercentageBasis) { |
| 6969 | return IntrinsicSizeOffsets(this, aPercentageBasis, false); |
| 6970 | } |
| 6971 | |
| 6972 | /* virtual */ |
| 6973 | IntrinsicSize nsIFrame::GetIntrinsicSize() { |
| 6974 | // Defaults to no intrinsic size. |
| 6975 | return IntrinsicSize(); |
| 6976 | } |
| 6977 | |
| 6978 | AspectRatio nsIFrame::GetAspectRatio() const { |
| 6979 | // Per spec, 'aspect-ratio' property applies to all elements except inline |
| 6980 | // boxes and internal ruby or table boxes. |
| 6981 | // https://drafts.csswg.org/css-sizing-4/#aspect-ratio |
| 6982 | // For those frame types that don't support aspect-ratio, they must not have |
| 6983 | // the natural ratio, so this early return is fine. |
| 6984 | if (!SupportsAspectRatio()) { |
| 6985 | return AspectRatio(); |
| 6986 | } |
| 6987 | |
| 6988 | const StyleAspectRatio& ar = StylePosition()->mAspectRatio; |
| 6989 | const bool hasRatio = ar.HasRatio(); |
| 6990 | // If aspect-ratio is zero or infinite, it's a degenerate ratio and behaves |
| 6991 | // as auto. |
| 6992 | // https://drafts.csswg.org/css-sizing-4/#valdef-aspect-ratio-ratio |
| 6993 | // Non-auto. Return the preferred aspect ratio from the aspect-ratio style. |
| 6994 | if (hasRatio && !ar.auto_) { |
| 6995 | if (auto ratio = ar.ratio.AsRatio().ToLayoutRatio(UseBoxSizing::Yes)) { |
| 6996 | return ratio; |
| 6997 | } |
| 6998 | } |
| 6999 | |
| 7000 | if (auto intrinsicRatio = GetIntrinsicRatio()) { |
| 7001 | return intrinsicRatio; |
| 7002 | } |
| 7003 | |
| 7004 | if (hasRatio) { |
| 7005 | // This returns a 0 ratio for degenerate rations, like the auto case below. |
| 7006 | return ar.ratio.AsRatio().ToLayoutRatio(UseBoxSizing::No); |
| 7007 | } |
| 7008 | |
| 7009 | return AspectRatio(); |
| 7010 | } |
| 7011 | |
| 7012 | /* virtual */ |
| 7013 | AspectRatio nsIFrame::GetIntrinsicRatio() const { return AspectRatio(); } |
| 7014 | |
| 7015 | static bool ShouldApplyAutomaticMinimumOnInlineAxis( |
| 7016 | WritingMode aWM, bool aIsScrollableOverflow, |
| 7017 | const AnchorPosResolutionParams& aParams, |
| 7018 | const nsStylePosition* aPosition) { |
| 7019 | // Apply the automatic minimum size for aspect ratio: |
| 7020 | // Note: The replaced elements shouldn't be here, so we only check the scroll |
| 7021 | // container. |
| 7022 | // https://drafts.csswg.org/css-sizing-4/#aspect-ratio-minimum |
| 7023 | return !aIsScrollableOverflow && aPosition->MinISize(aWM, aParams)->IsAuto(); |
| 7024 | } |
| 7025 | |
| 7026 | /* virtual */ |
| 7027 | nsIFrame::SizeComputationResult nsIFrame::ComputeSize( |
| 7028 | const SizeComputationInput& aSizingInput, WritingMode aWM, |
| 7029 | const LogicalSize& aCBSize, nscoord aAvailableISize, |
| 7030 | const LogicalSize& aMargin, const LogicalSize& aBorderPadding, |
| 7031 | const StyleSizeOverrides& aSizeOverrides, ComputeSizeFlags aFlags) { |
| 7032 | MOZ_ASSERT(!GetIntrinsicRatio(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!GetIntrinsicRatio())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!GetIntrinsicRatio()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!GetIntrinsicRatio()" " (" "Please override this method and call " "nsContainerFrame::ComputeSizeWithIntrinsicDimensions instead." ")", "./../../../layout/generic/nsIFrame.cpp", 7034); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!GetIntrinsicRatio()" ") (" "Please override this method and call " "nsContainerFrame::ComputeSizeWithIntrinsicDimensions instead." ")"); do { MOZ_CrashSequence(__null, 7034); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 7033 | "Please override this method and call "do { static_assert( mozilla::detail::AssertionConditionType< decltype(!GetIntrinsicRatio())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!GetIntrinsicRatio()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!GetIntrinsicRatio()" " (" "Please override this method and call " "nsContainerFrame::ComputeSizeWithIntrinsicDimensions instead." ")", "./../../../layout/generic/nsIFrame.cpp", 7034); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!GetIntrinsicRatio()" ") (" "Please override this method and call " "nsContainerFrame::ComputeSizeWithIntrinsicDimensions instead." ")"); do { MOZ_CrashSequence(__null, 7034); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 7034 | "nsContainerFrame::ComputeSizeWithIntrinsicDimensions instead.")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!GetIntrinsicRatio())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!GetIntrinsicRatio()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!GetIntrinsicRatio()" " (" "Please override this method and call " "nsContainerFrame::ComputeSizeWithIntrinsicDimensions instead." ")", "./../../../layout/generic/nsIFrame.cpp", 7034); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!GetIntrinsicRatio()" ") (" "Please override this method and call " "nsContainerFrame::ComputeSizeWithIntrinsicDimensions instead." ")"); do { MOZ_CrashSequence(__null, 7034); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7035 | LogicalSize result = |
| 7036 | ComputeAutoSize(aSizingInput, aWM, aCBSize, aAvailableISize, aMargin, |
| 7037 | aBorderPadding, aSizeOverrides, aFlags); |
| 7038 | const nsStylePosition* stylePos = StylePosition(); |
| 7039 | const nsStyleDisplay* disp = StyleDisplay(); |
| 7040 | const auto anchorResolutionParams = AnchorPosResolutionParams::From( |
| 7041 | this, aSizingInput.mAnchorPosResolutionCache); |
| 7042 | auto aspectRatioUsage = AspectRatioUsage::None; |
| 7043 | |
| 7044 | const auto boxSizingAdjust = stylePos->mBoxSizing == StyleBoxSizing::BorderBox |
| 7045 | ? aBorderPadding |
| 7046 | : LogicalSize(aWM); |
| 7047 | const auto& aspectRatio = aSizeOverrides.mAspectRatio |
| 7048 | ? *aSizeOverrides.mAspectRatio |
| 7049 | : GetAspectRatio(); |
| 7050 | const auto styleISize = |
| 7051 | aSizeOverrides.mStyleISize |
| 7052 | ? AnchorResolvedSizeHelper::Overridden(*aSizeOverrides.mStyleISize) |
| 7053 | : stylePos->ISize(aWM, anchorResolutionParams); |
| 7054 | // For bsize, we consider overrides *and then* we resolve 'stretch' to a |
| 7055 | // nscoord value, for convenience (so that we can assume that either |
| 7056 | // isAutoBSize is true, or styleBSize is of type LengthPercentage()). |
| 7057 | const auto styleBSize = [&] { |
| 7058 | auto styleBSizeConsideringOverrides = |
| 7059 | aSizeOverrides.mStyleBSize |
| 7060 | ? AnchorResolvedSizeHelper::Overridden(*aSizeOverrides.mStyleBSize) |
| 7061 | : stylePos->BSize(aWM, anchorResolutionParams); |
| 7062 | if (styleBSizeConsideringOverrides->BehavesLikeStretchOnBlockAxis() && |
| 7063 | aCBSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE) { |
| 7064 | // We've got a 'stretch' BSize; resolve it to a length: |
| 7065 | nscoord stretchBSize = nsLayoutUtils::ComputeStretchSize( |
| 7066 | aCBSize.BSize(aWM), aMargin.BSize(aWM), aBorderPadding.BSize(aWM), |
| 7067 | stylePos->mBoxSizing); |
| 7068 | // Note(dshin): This allocates. |
| 7069 | return AnchorResolvedSizeHelper::LengthPercentage( |
| 7070 | LengthPercentage::FromAppUnits(stretchBSize)); |
| 7071 | } |
| 7072 | return styleBSizeConsideringOverrides; |
| 7073 | }(); |
| 7074 | |
| 7075 | auto parentFrame = GetParent(); |
| 7076 | auto alignCB = parentFrame; |
| 7077 | bool isGridItem = IsGridItem(); |
| 7078 | const bool isSubgrid = IsSubgrid(); |
| 7079 | if (parentFrame && parentFrame->IsTableWrapperFrame() && IsTableFrame()) { |
| 7080 | // An inner table frame is sized as a grid item if its table wrapper is, |
| 7081 | // because they actually have the same CB (the wrapper's CB). |
| 7082 | // @see ReflowInput::InitCBReflowInput |
| 7083 | auto tableWrapper = GetParent(); |
| 7084 | auto grandParent = tableWrapper->GetParent(); |
| 7085 | isGridItem = grandParent->IsGridContainerFrame() && |
| 7086 | !tableWrapper->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW); |
| 7087 | if (isGridItem) { |
| 7088 | // When resolving justify/align-self below, we want to use the grid |
| 7089 | // container's justify/align-items value and WritingMode. |
| 7090 | alignCB = grandParent; |
| 7091 | } |
| 7092 | } |
| 7093 | |
| 7094 | // flexItemMainAxis is set if this frame is a flex item in a modern flexbox |
| 7095 | // layout. It indicates which logical axis (in this frame's own WM) |
| 7096 | // corresponds to its flex container's main axis. |
| 7097 | Maybe<LogicalAxis> flexItemMainAxis; |
| 7098 | if (IsFlexItem() && !parentFrame->HasAnyStateBits( |
| 7099 | NS_STATE_FLEX_IS_EMULATING_LEGACY_WEBKIT_BOX)) { |
| 7100 | flexItemMainAxis = Some(nsFlexContainerFrame::IsItemInlineAxisMainAxis(this) |
| 7101 | ? LogicalAxis::Inline |
| 7102 | : LogicalAxis::Block); |
| 7103 | } |
| 7104 | |
| 7105 | const bool isAutoISize = styleISize->IsAuto(); |
| 7106 | const bool isAutoBSize = |
| 7107 | nsLayoutUtils::IsAutoBSize(*styleBSize, aCBSize.BSize(aWM)); |
| 7108 | |
| 7109 | MOZ_ASSERT(isAutoBSize || styleBSize->IsLengthPercentage(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(isAutoBSize || styleBSize->IsLengthPercentage())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(isAutoBSize || styleBSize->IsLengthPercentage())) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("isAutoBSize || styleBSize->IsLengthPercentage()" " (" "We should have resolved away any non-'auto'-like flavors " "of styleBSize into a LengthPercentage. (If this fails, we " "might run afoul of some AsLengthPercentage() call below.)" ")" , "./../../../layout/generic/nsIFrame.cpp", 7112); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "isAutoBSize || styleBSize->IsLengthPercentage()" ") (" "We should have resolved away any non-'auto'-like flavors " "of styleBSize into a LengthPercentage. (If this fails, we " "might run afoul of some AsLengthPercentage() call below.)" ")" ); do { MOZ_CrashSequence(__null, 7112); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 7110 | "We should have resolved away any non-'auto'-like flavors "do { static_assert( mozilla::detail::AssertionConditionType< decltype(isAutoBSize || styleBSize->IsLengthPercentage())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(isAutoBSize || styleBSize->IsLengthPercentage())) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("isAutoBSize || styleBSize->IsLengthPercentage()" " (" "We should have resolved away any non-'auto'-like flavors " "of styleBSize into a LengthPercentage. (If this fails, we " "might run afoul of some AsLengthPercentage() call below.)" ")" , "./../../../layout/generic/nsIFrame.cpp", 7112); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "isAutoBSize || styleBSize->IsLengthPercentage()" ") (" "We should have resolved away any non-'auto'-like flavors " "of styleBSize into a LengthPercentage. (If this fails, we " "might run afoul of some AsLengthPercentage() call below.)" ")" ); do { MOZ_CrashSequence(__null, 7112); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 7111 | "of styleBSize into a LengthPercentage. (If this fails, we "do { static_assert( mozilla::detail::AssertionConditionType< decltype(isAutoBSize || styleBSize->IsLengthPercentage())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(isAutoBSize || styleBSize->IsLengthPercentage())) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("isAutoBSize || styleBSize->IsLengthPercentage()" " (" "We should have resolved away any non-'auto'-like flavors " "of styleBSize into a LengthPercentage. (If this fails, we " "might run afoul of some AsLengthPercentage() call below.)" ")" , "./../../../layout/generic/nsIFrame.cpp", 7112); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "isAutoBSize || styleBSize->IsLengthPercentage()" ") (" "We should have resolved away any non-'auto'-like flavors " "of styleBSize into a LengthPercentage. (If this fails, we " "might run afoul of some AsLengthPercentage() call below.)" ")" ); do { MOZ_CrashSequence(__null, 7112); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 7112 | "might run afoul of some AsLengthPercentage() call below.)")do { static_assert( mozilla::detail::AssertionConditionType< decltype(isAutoBSize || styleBSize->IsLengthPercentage())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(isAutoBSize || styleBSize->IsLengthPercentage())) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("isAutoBSize || styleBSize->IsLengthPercentage()" " (" "We should have resolved away any non-'auto'-like flavors " "of styleBSize into a LengthPercentage. (If this fails, we " "might run afoul of some AsLengthPercentage() call below.)" ")" , "./../../../layout/generic/nsIFrame.cpp", 7112); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "isAutoBSize || styleBSize->IsLengthPercentage()" ") (" "We should have resolved away any non-'auto'-like flavors " "of styleBSize into a LengthPercentage. (If this fails, we " "might run afoul of some AsLengthPercentage() call below.)" ")" ); do { MOZ_CrashSequence(__null, 7112); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7113 | |
| 7114 | // Compute inline-axis size |
| 7115 | const bool isSubgriddedInInlineAxis = |
| 7116 | isSubgrid && static_cast<nsGridContainerFrame*>(this)->IsColSubgrid(); |
| 7117 | |
| 7118 | // Per https://drafts.csswg.org/css-grid/#subgrid-box-alignment, if we are |
| 7119 | // subgridded in the inline-axis, ignore our style inline-size, and stretch to |
| 7120 | // fill the CB. |
| 7121 | const bool shouldComputeISize = !isAutoISize && !isSubgriddedInInlineAxis; |
| 7122 | if (shouldComputeISize) { |
| 7123 | auto iSizeResult = ComputeISizeValue( |
| 7124 | aSizingInput.mRenderingContext, aWM, aCBSize, aMargin, aBorderPadding, |
| 7125 | *styleISize, *styleBSize, aspectRatio, aFlags); |
| 7126 | result.ISize(aWM) = iSizeResult.mISize; |
| 7127 | aspectRatioUsage = iSizeResult.mAspectRatioUsage; |
| 7128 | } else if (MOZ_UNLIKELY(isGridItem)(__builtin_expect(!!(isGridItem), 0)) && !IsTrueOverflowContainer()) { |
| 7129 | // 'auto' inline-size for grid-level box - fill the CB for 'stretch' / |
| 7130 | // 'normal' and clamp it to the CB if requested: |
| 7131 | bool isStretchAligned = false; |
| 7132 | bool mayUseAspectRatio = aspectRatio && !isAutoBSize; |
| 7133 | if (!aFlags.contains(ComputeSizeFlag::ShrinkWrap) && |
| 7134 | !StyleMargin()->HasInlineAxisAuto(aWM, anchorResolutionParams) && |
| 7135 | !alignCB->IsMasonry(aWM, LogicalAxis::Inline)) { |
| 7136 | auto inlineAxisAlignment = stylePos->UsedSelfAlignment( |
| 7137 | aWM, LogicalAxis::Inline, alignCB->GetWritingMode(), |
| 7138 | alignCB->Style()); |
| 7139 | isStretchAligned = inlineAxisAlignment == StyleAlignFlags::STRETCH || |
| 7140 | (inlineAxisAlignment == StyleAlignFlags::NORMAL && |
| 7141 | !mayUseAspectRatio); |
| 7142 | } |
| 7143 | |
| 7144 | // Apply the preferred aspect ratio for alignments other than *stretch* and |
| 7145 | // *normal without aspect ratio*. |
| 7146 | // The spec says all other values should size the items as fit-content, and |
| 7147 | // the intrinsic size should respect the preferred aspect ratio, so we also |
| 7148 | // apply aspect ratio for all other values. |
| 7149 | // https://drafts.csswg.org/css-grid/#grid-item-sizing |
| 7150 | if (!isStretchAligned && mayUseAspectRatio) { |
| 7151 | result.ISize(aWM) = ComputeISizeValueFromAspectRatio( |
| 7152 | aWM, aCBSize, boxSizingAdjust, styleBSize->AsLengthPercentage(), |
| 7153 | aspectRatio); |
| 7154 | aspectRatioUsage = AspectRatioUsage::ToComputeISize; |
| 7155 | } |
| 7156 | |
| 7157 | if (isStretchAligned || |
| 7158 | aFlags.contains(ComputeSizeFlag::IClampMarginBoxMinSize)) { |
| 7159 | auto iSizeToFillCB = |
| 7160 | std::max(nscoord(0), aCBSize.ISize(aWM) - aBorderPadding.ISize(aWM) - |
| 7161 | aMargin.ISize(aWM)); |
| 7162 | if (isStretchAligned || result.ISize(aWM) > iSizeToFillCB) { |
| 7163 | result.ISize(aWM) = iSizeToFillCB; |
| 7164 | } |
| 7165 | } |
| 7166 | } else if (aspectRatio && !isAutoBSize) { |
| 7167 | // Note: if both the inline size and the block size are auto, the block axis |
| 7168 | // is the ratio-dependent axis by default. That means we only need to |
| 7169 | // transfer the resolved inline size via aspect-ratio to block axis later in |
| 7170 | // this method, but not the other way around. |
| 7171 | // |
| 7172 | // In this branch, we transfer the non-auto block size via aspect-ration to |
| 7173 | // inline axis. |
| 7174 | result.ISize(aWM) = ComputeISizeValueFromAspectRatio( |
| 7175 | aWM, aCBSize, boxSizingAdjust, styleBSize->AsLengthPercentage(), |
| 7176 | aspectRatio); |
| 7177 | aspectRatioUsage = AspectRatioUsage::ToComputeISize; |
| 7178 | } |
| 7179 | |
| 7180 | // Calculate and apply transferred min & max size contraints. |
| 7181 | // https://drafts.csswg.org/css-sizing-4/#aspect-ratio-size-transfers |
| 7182 | // |
| 7183 | // Note: The basic principle is that sizing constraints transfer through the |
| 7184 | // aspect-ratio to the other side to preserve the aspect ratio to the extent |
| 7185 | // that they can without violating any sizes specified explicitly on that |
| 7186 | // affected axis. |
| 7187 | // |
| 7188 | // FIXME: The spec words may not be correct, so we may have to update this |
| 7189 | // tentative solution once this spec issue gets resolved. Here, we clamp the |
| 7190 | // flex base size by the transferred min and max sizes, and don't include |
| 7191 | // the transferred min & max sizes into its used min & max sizes. So this |
| 7192 | // lets us match other browsers' current behaviors. |
| 7193 | // https://github.com/w3c/csswg-drafts/issues/6071 |
| 7194 | // |
| 7195 | // Note: This may make more sense if we clamp the flex base size in |
| 7196 | // FlexItem::ResolveFlexBaseSizeFromAspectRatio(). However, the result should |
| 7197 | // be identical. FlexItem::ResolveFlexBaseSizeFromAspectRatio() only handles |
| 7198 | // the case of the definite cross size, and the definite cross size is clamped |
| 7199 | // by the min & max cross sizes below in this function. This means its flex |
| 7200 | // base size has been clamped by the transferred min & max size already after |
| 7201 | // generating the flex items. So here we make the code more general for both |
| 7202 | // definite cross size and indefinite cross size. |
| 7203 | const bool isDefiniteISize = styleISize->IsLengthPercentage(); |
| 7204 | const auto minBSizeCoord = stylePos->MinBSize(aWM, anchorResolutionParams); |
| 7205 | const auto maxBSizeCoord = stylePos->MaxBSize(aWM, anchorResolutionParams); |
| 7206 | const bool isAutoMinBSize = |
| 7207 | nsLayoutUtils::IsAutoBSize(*minBSizeCoord, aCBSize.BSize(aWM)); |
| 7208 | const bool isAutoMaxBSize = |
| 7209 | nsLayoutUtils::IsAutoBSize(*maxBSizeCoord, aCBSize.BSize(aWM)); |
| 7210 | if (aspectRatio && !isDefiniteISize) { |
| 7211 | // Note: the spec mentions that |
| 7212 | // 1. This transferred minimum is capped by any definite preferred or |
| 7213 | // maximum size in the destination axis. |
| 7214 | // 2. This transferred maximum is floored by any definite preferred or |
| 7215 | // minimum size in the destination axis. |
| 7216 | // |
| 7217 | // https://drafts.csswg.org/css-sizing-4/#aspect-ratio-size-transfers |
| 7218 | // |
| 7219 | // The spec requires us to clamp these by the specified size (it calls it |
| 7220 | // the preferred size). However, we actually don't need to worry about that, |
| 7221 | // because we are here only if the inline size is indefinite. |
| 7222 | // |
| 7223 | // We do not need to clamp the transferred minimum and maximum as long as we |
| 7224 | // always apply the transferred min/max size before the explicit min/max |
| 7225 | // size; the result will be identical. |
| 7226 | const nscoord transferredMinISize = |
| 7227 | isAutoMinBSize ? 0 |
| 7228 | : ComputeISizeValueFromAspectRatio( |
| 7229 | aWM, aCBSize, boxSizingAdjust, |
| 7230 | minBSizeCoord->AsLengthPercentage(), aspectRatio); |
| 7231 | const nscoord transferredMaxISize = |
| 7232 | isAutoMaxBSize ? nscoord_MAX |
| 7233 | : ComputeISizeValueFromAspectRatio( |
| 7234 | aWM, aCBSize, boxSizingAdjust, |
| 7235 | maxBSizeCoord->AsLengthPercentage(), aspectRatio); |
| 7236 | |
| 7237 | result.ISize(aWM) = |
| 7238 | CSSMinMax(result.ISize(aWM), transferredMinISize, transferredMaxISize); |
| 7239 | } |
| 7240 | |
| 7241 | // Flex items ignore their min & max sizing properties in their flex |
| 7242 | // container's main-axis. (Those properties get applied later in the flexbox |
| 7243 | // algorithm.) |
| 7244 | const bool isFlexItemInlineAxisMainAxis = |
| 7245 | flexItemMainAxis && *flexItemMainAxis == LogicalAxis::Inline; |
| 7246 | // Grid items that are subgridded in inline-axis also ignore their min & max |
| 7247 | // sizing properties in that axis. |
| 7248 | const bool shouldIgnoreMinMaxISize = |
| 7249 | isFlexItemInlineAxisMainAxis || isSubgriddedInInlineAxis; |
| 7250 | const auto maxISizeCoord = stylePos->MaxISize(aWM, anchorResolutionParams); |
| 7251 | nscoord maxISize = NS_UNCONSTRAINEDSIZE; |
| 7252 | if (!maxISizeCoord->IsNone() && !shouldIgnoreMinMaxISize) { |
| 7253 | maxISize = ComputeISizeValue(aSizingInput.mRenderingContext, aWM, aCBSize, |
| 7254 | aMargin, aBorderPadding, *maxISizeCoord, |
| 7255 | *styleBSize, aspectRatio, aFlags) |
| 7256 | .mISize; |
| 7257 | result.ISize(aWM) = std::min(maxISize, result.ISize(aWM)); |
| 7258 | } |
| 7259 | |
| 7260 | const nscoord bSizeAsPercentageBasis = ComputeBSizeValueAsPercentageBasis( |
| 7261 | *styleBSize, *minBSizeCoord, *maxBSizeCoord, aCBSize.BSize(aWM), |
| 7262 | boxSizingAdjust.BSize(aWM), aMargin.BSize(aWM), |
| 7263 | aBorderPadding.BSize(aWM)); |
| 7264 | const IntrinsicSizeInput input( |
| 7265 | aSizingInput.mRenderingContext, |
| 7266 | Some(aCBSize.ConvertTo(GetWritingMode(), aWM)), |
| 7267 | Some(LogicalSize(aWM, NS_UNCONSTRAINEDSIZE, bSizeAsPercentageBasis) |
| 7268 | .ConvertTo(GetWritingMode(), aWM))); |
| 7269 | const auto minISizeCoord = stylePos->MinISize(aWM, anchorResolutionParams); |
| 7270 | nscoord minISize; |
| 7271 | if (!minISizeCoord->IsAuto() && !shouldIgnoreMinMaxISize) { |
| 7272 | minISize = ComputeISizeValue(aSizingInput.mRenderingContext, aWM, aCBSize, |
| 7273 | aMargin, aBorderPadding, *minISizeCoord, |
| 7274 | *styleBSize, aspectRatio, aFlags) |
| 7275 | .mISize; |
| 7276 | } else if (MOZ_UNLIKELY((__builtin_expect(!!(aFlags.contains(ComputeSizeFlag::IApplyAutoMinSize )), 0)) |
| 7277 | aFlags.contains(ComputeSizeFlag::IApplyAutoMinSize))(__builtin_expect(!!(aFlags.contains(ComputeSizeFlag::IApplyAutoMinSize )), 0))) { |
| 7278 | // This implements "Implied Minimum Size of Grid Items". |
| 7279 | // https://drafts.csswg.org/css-grid/#min-size-auto |
| 7280 | minISize = std::min(maxISize, GetMinISize(input)); |
| 7281 | if (styleISize->IsLengthPercentage()) { |
| 7282 | minISize = std::min(minISize, result.ISize(aWM)); |
| 7283 | } else if (aFlags.contains(ComputeSizeFlag::IClampMarginBoxMinSize)) { |
| 7284 | // "if the grid item spans only grid tracks that have a fixed max track |
| 7285 | // sizing function, its automatic minimum size in that dimension is |
| 7286 | // further clamped to less than or equal to the size necessary to fit |
| 7287 | // its margin box within the resulting grid area (flooring at zero)" |
| 7288 | // https://drafts.csswg.org/css-grid/#min-size-auto |
| 7289 | auto maxMinISize = |
| 7290 | std::max(nscoord(0), aCBSize.ISize(aWM) - aBorderPadding.ISize(aWM) - |
| 7291 | aMargin.ISize(aWM)); |
| 7292 | minISize = std::min(minISize, maxMinISize); |
| 7293 | } |
| 7294 | } else if (aspectRatioUsage == AspectRatioUsage::ToComputeISize && |
| 7295 | ShouldApplyAutomaticMinimumOnInlineAxis( |
| 7296 | aWM, disp->IsScrollableOverflow(), anchorResolutionParams, |
| 7297 | stylePos)) { |
| 7298 | // This means we successfully applied aspect-ratio and now need to check |
| 7299 | // if we need to apply the automatic content-based minimum size: |
| 7300 | // https://drafts.csswg.org/css-sizing-4/#aspect-ratio-minimum |
| 7301 | MOZ_ASSERT(!HasReplacedSizing(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasReplacedSizing())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!HasReplacedSizing()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!HasReplacedSizing()" " (" "aspect-ratio minimums should not apply to replaced elements" ")", "./../../../layout/generic/nsIFrame.cpp", 7302); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!HasReplacedSizing()" ") (" "aspect-ratio minimums should not apply to replaced elements" ")"); do { MOZ_CrashSequence(__null, 7302); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 7302 | "aspect-ratio minimums should not apply to replaced elements")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasReplacedSizing())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!HasReplacedSizing()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!HasReplacedSizing()" " (" "aspect-ratio minimums should not apply to replaced elements" ")", "./../../../layout/generic/nsIFrame.cpp", 7302); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!HasReplacedSizing()" ") (" "aspect-ratio minimums should not apply to replaced elements" ")"); do { MOZ_CrashSequence(__null, 7302); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7303 | // The inline size computed by aspect-ratio shouldn't less than the |
| 7304 | // min-content size, which should be capped by its maximum inline size. |
| 7305 | minISize = std::min(GetMinISize(input), maxISize); |
| 7306 | } else { |
| 7307 | // Treat "min-width: auto" as 0. |
| 7308 | // NOTE: Technically, "auto" is supposed to behave like "min-content" on |
| 7309 | // flex items. However, we don't need to worry about that here, because |
| 7310 | // flex items' min-sizes are intentionally ignored until the flex |
| 7311 | // container explicitly considers them during space distribution. |
| 7312 | minISize = 0; |
| 7313 | } |
| 7314 | result.ISize(aWM) = std::max(minISize, result.ISize(aWM)); |
| 7315 | |
| 7316 | // Compute block-axis size |
| 7317 | // (but not if we have auto bsize -- then, we'll just stick with the bsize |
| 7318 | // that we already calculated in the initial ComputeAutoSize() call. However, |
| 7319 | // if we have a valid preferred aspect ratio, we still have to compute the |
| 7320 | // block size because aspect ratio affects the intrinsic content size.) |
| 7321 | const bool isSubgriddedInBlockAxis = |
| 7322 | isSubgrid && static_cast<nsGridContainerFrame*>(this)->IsRowSubgrid(); |
| 7323 | |
| 7324 | // Per https://drafts.csswg.org/css-grid/#subgrid-box-alignment, if we are |
| 7325 | // subgridded in the block-axis, ignore our style block-size, and stretch to |
| 7326 | // fill the CB. |
| 7327 | const bool shouldComputeBSize = !isAutoBSize && !isSubgriddedInBlockAxis; |
| 7328 | if (shouldComputeBSize) { |
| 7329 | result.BSize(aWM) = nsLayoutUtils::ComputeBSizeValue( |
| 7330 | aCBSize.BSize(aWM), boxSizingAdjust.BSize(aWM), |
| 7331 | styleBSize->AsLengthPercentage()); |
| 7332 | } else if (MOZ_UNLIKELY(isGridItem)(__builtin_expect(!!(isGridItem), 0)) && styleBSize->IsAuto() && |
| 7333 | !aFlags.contains(ComputeSizeFlag::IsGridMeasuringReflow) && |
| 7334 | !IsTrueOverflowContainer() && |
| 7335 | !alignCB->IsMasonry(aWM, LogicalAxis::Block)) { |
| 7336 | auto cbSize = aCBSize.BSize(aWM); |
| 7337 | if (cbSize != NS_UNCONSTRAINEDSIZE) { |
| 7338 | // 'auto' block-size for grid-level box - fill the CB for 'stretch' / |
| 7339 | // 'normal' and clamp it to the CB if requested: |
| 7340 | bool isStretchAligned = false; |
| 7341 | bool mayUseAspectRatio = |
| 7342 | aspectRatio && result.ISize(aWM) != NS_UNCONSTRAINEDSIZE; |
| 7343 | if (!StyleMargin()->HasBlockAxisAuto(aWM, anchorResolutionParams)) { |
| 7344 | auto blockAxisAlignment = stylePos->UsedSelfAlignment( |
| 7345 | aWM, LogicalAxis::Block, alignCB->GetWritingMode(), |
| 7346 | alignCB->Style()); |
| 7347 | isStretchAligned = blockAxisAlignment == StyleAlignFlags::STRETCH || |
| 7348 | (blockAxisAlignment == StyleAlignFlags::NORMAL && |
| 7349 | !mayUseAspectRatio); |
| 7350 | } |
| 7351 | |
| 7352 | // Apply the preferred aspect ratio for alignments other than *stretch* |
| 7353 | // and *normal without aspect ratio*. |
| 7354 | // The spec says all other values should size the items as fit-content, |
| 7355 | // and the intrinsic size should respect the preferred aspect ratio, so |
| 7356 | // we also apply aspect ratio for all other values. |
| 7357 | // https://drafts.csswg.org/css-grid/#grid-item-sizing |
| 7358 | if (!isStretchAligned && mayUseAspectRatio) { |
| 7359 | result.BSize(aWM) = aspectRatio.ComputeRatioDependentSize( |
| 7360 | LogicalAxis::Block, aWM, result.ISize(aWM), boxSizingAdjust); |
| 7361 | MOZ_ASSERT(aspectRatioUsage == AspectRatioUsage::None)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aspectRatioUsage == AspectRatioUsage::None)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(aspectRatioUsage == AspectRatioUsage::None))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aspectRatioUsage == AspectRatioUsage::None" , "./../../../layout/generic/nsIFrame.cpp", 7361); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aspectRatioUsage == AspectRatioUsage::None" ")"); do { MOZ_CrashSequence(__null, 7361); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7362 | aspectRatioUsage = AspectRatioUsage::ToComputeBSize; |
| 7363 | } |
| 7364 | |
| 7365 | if (isStretchAligned || |
| 7366 | aFlags.contains(ComputeSizeFlag::BClampMarginBoxMinSize)) { |
| 7367 | auto bSizeToFillCB = nsLayoutUtils::ComputeStretchContentBoxBSize( |
| 7368 | cbSize, aMargin.BSize(aWM), aBorderPadding.BSize(aWM)); |
| 7369 | if (isStretchAligned || (result.BSize(aWM) != NS_UNCONSTRAINEDSIZE && |
| 7370 | result.BSize(aWM) > bSizeToFillCB)) { |
| 7371 | result.BSize(aWM) = bSizeToFillCB; |
| 7372 | } |
| 7373 | } |
| 7374 | } |
| 7375 | } else if (aspectRatio) { |
| 7376 | // If both inline and block dimensions are auto, the block axis is the |
| 7377 | // ratio-dependent axis by default. |
| 7378 | // If we have a super large inline size, aspect-ratio should still be |
| 7379 | // applied (so aspectRatioUsage flag is set as expected). That's why we |
| 7380 | // apply aspect-ratio unconditionally for auto block size here. |
| 7381 | result.BSize(aWM) = aspectRatio.ComputeRatioDependentSize( |
| 7382 | LogicalAxis::Block, aWM, result.ISize(aWM), boxSizingAdjust); |
| 7383 | MOZ_ASSERT(aspectRatioUsage == AspectRatioUsage::None)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aspectRatioUsage == AspectRatioUsage::None)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(aspectRatioUsage == AspectRatioUsage::None))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aspectRatioUsage == AspectRatioUsage::None" , "./../../../layout/generic/nsIFrame.cpp", 7383); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aspectRatioUsage == AspectRatioUsage::None" ")"); do { MOZ_CrashSequence(__null, 7383); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7384 | aspectRatioUsage = AspectRatioUsage::ToComputeBSize; |
| 7385 | } |
| 7386 | |
| 7387 | if (result.BSize(aWM) != NS_UNCONSTRAINEDSIZE) { |
| 7388 | // Flex items ignore their min & max sizing properties in their flex |
| 7389 | // container's main-axis. (Those properties get applied later in the flexbox |
| 7390 | // algorithm.) |
| 7391 | const bool isFlexItemBlockAxisMainAxis = |
| 7392 | flexItemMainAxis && *flexItemMainAxis == LogicalAxis::Block; |
| 7393 | // Grid items that are subgridded in block-axis also ignore their min & max |
| 7394 | // sizing properties in that axis. |
| 7395 | const bool shouldIgnoreMinMaxBSize = |
| 7396 | isFlexItemBlockAxisMainAxis || isSubgriddedInBlockAxis; |
| 7397 | if (!isAutoMaxBSize && !shouldIgnoreMinMaxBSize) { |
| 7398 | nscoord maxBSize = nsLayoutUtils::ComputeBSizeValueHandlingStretch( |
| 7399 | aCBSize.BSize(aWM), aMargin.BSize(aWM), aBorderPadding.BSize(aWM), |
| 7400 | boxSizingAdjust.BSize(aWM), *maxBSizeCoord); |
| 7401 | result.BSize(aWM) = std::min(maxBSize, result.BSize(aWM)); |
| 7402 | } |
| 7403 | |
| 7404 | if (!isAutoMinBSize && !shouldIgnoreMinMaxBSize) { |
| 7405 | nscoord minBSize = nsLayoutUtils::ComputeBSizeValueHandlingStretch( |
| 7406 | aCBSize.BSize(aWM), aMargin.BSize(aWM), aBorderPadding.BSize(aWM), |
| 7407 | boxSizingAdjust.BSize(aWM), *minBSizeCoord); |
| 7408 | result.BSize(aWM) = std::max(minBSize, result.BSize(aWM)); |
| 7409 | } |
| 7410 | } |
| 7411 | |
| 7412 | if (IsThemed(disp)) { |
| 7413 | nsPresContext* pc = PresContext(); |
| 7414 | const LayoutDeviceIntSize widget = pc->Theme()->GetMinimumWidgetSize( |
| 7415 | pc, this, disp->EffectiveAppearance()); |
| 7416 | |
| 7417 | // Convert themed widget's physical dimensions to logical coords |
| 7418 | LogicalSize size(aWM, LayoutDeviceIntSize::ToAppUnits( |
| 7419 | widget, pc->AppUnitsPerDevPixel())); |
| 7420 | |
| 7421 | // GetMinimumWidgetSize() returns border-box; we need content-box. |
| 7422 | size -= aBorderPadding; |
| 7423 | |
| 7424 | if (size.BSize(aWM) > result.BSize(aWM)) { |
| 7425 | result.BSize(aWM) = size.BSize(aWM); |
| 7426 | } |
| 7427 | if (size.ISize(aWM) > result.ISize(aWM)) { |
| 7428 | result.ISize(aWM) = size.ISize(aWM); |
| 7429 | } |
| 7430 | } |
| 7431 | |
| 7432 | result.ISize(aWM) = std::max(0, result.ISize(aWM)); |
| 7433 | result.BSize(aWM) = std::max(0, result.BSize(aWM)); |
| 7434 | |
| 7435 | return {result, aspectRatioUsage}; |
| 7436 | } |
| 7437 | |
| 7438 | nscoord nsIFrame::ComputeBSizeValueAsPercentageBasis( |
| 7439 | const StyleSize& aStyleBSize, const StyleSize& aStyleMinBSize, |
| 7440 | const StyleMaxSize& aStyleMaxBSize, nscoord aCBBSize, |
| 7441 | nscoord aContentEdgeToBoxSizingBSize, nscoord aMargin, |
| 7442 | nscoord aBorderPadding) { |
| 7443 | if (nsLayoutUtils::IsAutoBSize(aStyleBSize, aCBBSize)) { |
| 7444 | return NS_UNCONSTRAINEDSIZE; |
| 7445 | } |
| 7446 | |
| 7447 | const nscoord bSize = nsLayoutUtils::ComputeBSizeValueHandlingStretch( |
| 7448 | aCBBSize, aMargin, aBorderPadding, aContentEdgeToBoxSizingBSize, |
| 7449 | aStyleBSize); |
| 7450 | |
| 7451 | const nscoord minBSize = |
| 7452 | nsLayoutUtils::IsAutoBSize(aStyleMinBSize, aCBBSize) |
| 7453 | ? 0 |
| 7454 | : nsLayoutUtils::ComputeBSizeValueHandlingStretch( |
| 7455 | aCBBSize, aMargin, aBorderPadding, aContentEdgeToBoxSizingBSize, |
| 7456 | aStyleMinBSize); |
| 7457 | |
| 7458 | const nscoord maxBSize = |
| 7459 | nsLayoutUtils::IsAutoBSize(aStyleMaxBSize, aCBBSize) |
| 7460 | ? NS_UNCONSTRAINEDSIZE |
| 7461 | : nsLayoutUtils::ComputeBSizeValueHandlingStretch( |
| 7462 | aCBBSize, aMargin, aBorderPadding, aContentEdgeToBoxSizingBSize, |
| 7463 | aStyleMaxBSize); |
| 7464 | |
| 7465 | return CSSMinMax(bSize, minBSize, maxBSize); |
| 7466 | } |
| 7467 | |
| 7468 | nsRect nsIFrame::ComputeTightBounds(DrawTarget* aDrawTarget) const { |
| 7469 | return InkOverflowRect(); |
| 7470 | } |
| 7471 | |
| 7472 | /* virtual */ |
| 7473 | nsresult nsIFrame::GetPrefWidthTightBounds(gfxContext* aContext, nscoord* aX, |
| 7474 | nscoord* aXMost) { |
| 7475 | return NS_ERROR_NOT_IMPLEMENTED; |
| 7476 | } |
| 7477 | |
| 7478 | /* virtual */ |
| 7479 | LogicalSize nsIFrame::ComputeAutoSize( |
| 7480 | const SizeComputationInput& aSizingInput, WritingMode aWM, |
| 7481 | const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize, |
| 7482 | const mozilla::LogicalSize& aMargin, |
| 7483 | const mozilla::LogicalSize& aBorderPadding, |
| 7484 | const StyleSizeOverrides& aSizeOverrides, ComputeSizeFlags aFlags) { |
| 7485 | if (IsAbsolutelyPositionedWithDefiniteContainingBlock()) { |
| 7486 | return ComputeAbsolutePosAutoSize(aSizingInput, aWM, aCBSize, |
| 7487 | aAvailableISize, aMargin, aBorderPadding, |
| 7488 | aSizeOverrides, aFlags); |
| 7489 | } |
| 7490 | |
| 7491 | // Use basic shrink-wrapping as a default implementation. |
| 7492 | LogicalSize result(aWM, 0xdeadbeef, NS_UNCONSTRAINEDSIZE); |
| 7493 | |
| 7494 | const auto anchorResolutionParams = AnchorPosResolutionParams::From(this); |
| 7495 | // don't bother setting it if the result won't be used |
| 7496 | const auto styleISize = |
| 7497 | aSizeOverrides.mStyleISize |
| 7498 | ? AnchorResolvedSizeHelper::Overridden(*aSizeOverrides.mStyleISize) |
| 7499 | : StylePosition()->ISize(aWM, anchorResolutionParams); |
| 7500 | if (styleISize->IsAuto()) { |
| 7501 | nscoord availBased = nsLayoutUtils::ComputeStretchContentBoxISize( |
| 7502 | aAvailableISize, aMargin.ISize(aWM), aBorderPadding.ISize(aWM)); |
| 7503 | const auto* stylePos = StylePosition(); |
| 7504 | const auto styleBSize = |
| 7505 | aSizeOverrides.mStyleBSize |
| 7506 | ? AnchorResolvedSizeHelper::Overridden(*aSizeOverrides.mStyleBSize) |
| 7507 | : stylePos->BSize(aWM, anchorResolutionParams); |
| 7508 | const LogicalSize contentEdgeToBoxSizing = |
| 7509 | stylePos->mBoxSizing == StyleBoxSizing::BorderBox ? aBorderPadding |
| 7510 | : LogicalSize(aWM); |
| 7511 | const nscoord bSize = ComputeBSizeValueAsPercentageBasis( |
| 7512 | *styleBSize, *stylePos->MinBSize(aWM, anchorResolutionParams), |
| 7513 | *stylePos->MaxBSize(aWM, anchorResolutionParams), aCBSize.BSize(aWM), |
| 7514 | contentEdgeToBoxSizing.BSize(aWM), aMargin.BSize(aWM), |
| 7515 | aBorderPadding.BSize(aWM)); |
| 7516 | const IntrinsicSizeInput input( |
| 7517 | aSizingInput.mRenderingContext, |
| 7518 | Some(aCBSize.ConvertTo(GetWritingMode(), aWM)), |
| 7519 | Some(LogicalSize(aWM, NS_UNCONSTRAINEDSIZE, bSize) |
| 7520 | .ConvertTo(GetWritingMode(), aWM))); |
| 7521 | result.ISize(aWM) = ShrinkISizeToFit(input, availBased, aFlags); |
| 7522 | } |
| 7523 | return result; |
| 7524 | } |
| 7525 | |
| 7526 | bool nsIFrame::IsAbsolutelyPositionedWithDefiniteContainingBlock() const { |
| 7527 | // TODO(dshin, Bug 1927861): Even if an absolute container should have a |
| 7528 | // definite size, in a continuation context, the full extent of the containing |
| 7529 | // block is not known. |
| 7530 | return MOZ_UNLIKELY(IsAbsolutelyPositioned())(__builtin_expect(!!(IsAbsolutelyPositioned()), 0)) && !GetPrevInFlow(); |
| 7531 | } |
| 7532 | |
| 7533 | LogicalSize nsIFrame::ComputeAbsolutePosAutoSize( |
| 7534 | const SizeComputationInput& aSizingInput, WritingMode aWM, |
| 7535 | const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize, |
| 7536 | const mozilla::LogicalSize& aMargin, |
| 7537 | const mozilla::LogicalSize& aBorderPadding, |
| 7538 | const StyleSizeOverrides& aSizeOverrides, const ComputeSizeFlags& aFlags) { |
| 7539 | MOZ_ASSERT(IsAbsolutelyPositionedWithDefiniteContainingBlock(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsAbsolutelyPositionedWithDefiniteContainingBlock()) >::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(IsAbsolutelyPositionedWithDefiniteContainingBlock()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsAbsolutelyPositionedWithDefiniteContainingBlock()" " (" "Asking for absolute auto size when not absolute" ")", "./../../../layout/generic/nsIFrame.cpp" , 7540); AnnotateMozCrashReason("MOZ_ASSERT" "(" "IsAbsolutelyPositionedWithDefiniteContainingBlock()" ") (" "Asking for absolute auto size when not absolute" ")") ; do { MOZ_CrashSequence(__null, 7540); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 7540 | "Asking for absolute auto size when not absolute")do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsAbsolutelyPositionedWithDefiniteContainingBlock()) >::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(IsAbsolutelyPositionedWithDefiniteContainingBlock()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsAbsolutelyPositionedWithDefiniteContainingBlock()" " (" "Asking for absolute auto size when not absolute" ")", "./../../../layout/generic/nsIFrame.cpp" , 7540); AnnotateMozCrashReason("MOZ_ASSERT" "(" "IsAbsolutelyPositionedWithDefiniteContainingBlock()" ") (" "Asking for absolute auto size when not absolute" ")") ; do { MOZ_CrashSequence(__null, 7540); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7541 | // Ideally, this is an assertion, but the containing block could just be |
| 7542 | // really big. |
| 7543 | NS_WARNING_ASSERTION(aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE &&do { if (!(aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE && aCBSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE)) { NS_DebugBreak (NS_DEBUG_WARNING, "Absolute containing block size not definite?" , "aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE && aCBSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE" , "./../../../layout/generic/nsIFrame.cpp", 7545); } } while ( false) |
| 7544 | aCBSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE,do { if (!(aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE && aCBSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE)) { NS_DebugBreak (NS_DEBUG_WARNING, "Absolute containing block size not definite?" , "aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE && aCBSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE" , "./../../../layout/generic/nsIFrame.cpp", 7545); } } while ( false) |
| 7545 | "Absolute containing block size not definite?")do { if (!(aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE && aCBSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE)) { NS_DebugBreak (NS_DEBUG_WARNING, "Absolute containing block size not definite?" , "aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE && aCBSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE" , "./../../../layout/generic/nsIFrame.cpp", 7545); } } while ( false); |
| 7546 | LogicalSize result(aWM, static_cast<nscoord>(0xdeadbeef), |
| 7547 | NS_UNCONSTRAINEDSIZE); |
| 7548 | |
| 7549 | const auto* stylePos = StylePosition(); |
| 7550 | const auto anchorResolutionParams = |
| 7551 | AnchorPosOffsetResolutionParams::UseCBFrameSize( |
| 7552 | AnchorPosResolutionParams::From(&aSizingInput)); |
| 7553 | const auto& styleISize = |
| 7554 | aSizeOverrides.mStyleISize |
| 7555 | ? AnchorResolvedSizeHelper::Overridden(*aSizeOverrides.mStyleISize) |
| 7556 | : stylePos->ISize(aWM, anchorResolutionParams.mBaseParams); |
| 7557 | const auto& styleBSize = |
| 7558 | aSizeOverrides.mStyleBSize |
| 7559 | ? AnchorResolvedSizeHelper::Overridden(*aSizeOverrides.mStyleBSize) |
| 7560 | : stylePos->BSize(aWM, anchorResolutionParams.mBaseParams); |
| 7561 | const auto iStartOffsetIsAuto = |
| 7562 | stylePos |
| 7563 | ->GetAnchorResolvedInset(LogicalSide::IStart, aWM, |
| 7564 | anchorResolutionParams) |
| 7565 | ->IsAuto(); |
| 7566 | const auto iEndOffsetIsAuto = |
| 7567 | stylePos |
| 7568 | ->GetAnchorResolvedInset(LogicalSide::IEnd, aWM, |
| 7569 | anchorResolutionParams) |
| 7570 | ->IsAuto(); |
| 7571 | const auto bStartOffsetIsAuto = |
| 7572 | stylePos |
| 7573 | ->GetAnchorResolvedInset(LogicalSide::BStart, aWM, |
| 7574 | anchorResolutionParams) |
| 7575 | ->IsAuto(); |
| 7576 | const auto bEndOffsetIsAuto = |
| 7577 | stylePos |
| 7578 | ->GetAnchorResolvedInset(LogicalSide::BEnd, aWM, |
| 7579 | anchorResolutionParams) |
| 7580 | ->IsAuto(); |
| 7581 | const auto boxSizingAdjust = stylePos->mBoxSizing == StyleBoxSizing::BorderBox |
| 7582 | ? aBorderPadding |
| 7583 | : LogicalSize(aWM); |
| 7584 | auto shouldStretch = [](StyleAlignFlags aAlignment, const nsIFrame* aFrame, |
| 7585 | bool aStartIsAuto, bool aEndIsAuto) { |
| 7586 | if (aStartIsAuto || aEndIsAuto) { |
| 7587 | // Note(dshin, bug 1930427): This is not part of the current spec [1]; |
| 7588 | // however, no one implements the new inset behaviour [2], and the old |
| 7589 | // behaviour [3] ends up computing the static size if both or one inset is |
| 7590 | // auto. |
| 7591 | // |
| 7592 | // [1]: https://drafts.csswg.org/css-position-3/#abspos-auto-size |
| 7593 | // [2]: https://drafts.csswg.org/css-position-3/#resolving-insets |
| 7594 | // [3]: https://drafts.csswg.org/css-position-3/#abspos-old |
| 7595 | return false; |
| 7596 | } |
| 7597 | // Don't care about flag bits for auto-sizing. |
| 7598 | aAlignment &= ~StyleAlignFlags::FLAG_BITS; |
| 7599 | |
| 7600 | if (aAlignment == StyleAlignFlags::STRETCH) { |
| 7601 | return true; |
| 7602 | } |
| 7603 | |
| 7604 | if (aAlignment == StyleAlignFlags::NORMAL) { |
| 7605 | // Some replaced elements behave as semi-replaced elements - we want them |
| 7606 | // to stretch (See bug 1740580). |
| 7607 | return !aFrame->HasReplacedSizing() && !aFrame->IsTableWrapperFrame(); |
| 7608 | } |
| 7609 | |
| 7610 | return false; |
| 7611 | }; |
| 7612 | |
| 7613 | // i.e. Absolute containing block |
| 7614 | |
| 7615 | // Self alignment properties translate `auto` to normal for this purpose. |
| 7616 | // https://drafts.csswg.org/css-align-3/#valdef-justify-self-auto |
| 7617 | nsContainerFrame* contFrame = static_cast<nsContainerFrame*>(this); |
| 7618 | const StylePositionArea posArea = stylePos->mPositionArea; |
| 7619 | const auto containerWM = GetParent()->GetWritingMode(); |
| 7620 | auto containerAxis = [&](LogicalAxis aSubjectAxis) { |
| 7621 | return aWM.ConvertAxisTo(aSubjectAxis, containerWM); |
| 7622 | }; |
| 7623 | const auto inlineSelfAlign = |
| 7624 | contFrame->CSSAlignmentForAbsPosChildWithinContainingBlock( |
| 7625 | aSizingInput, containerAxis(LogicalAxis::Inline), posArea, aCBSize); |
| 7626 | const auto blockSelfAlign = |
| 7627 | contFrame->CSSAlignmentForAbsPosChildWithinContainingBlock( |
| 7628 | aSizingInput, containerAxis(LogicalAxis::Block), posArea, aCBSize); |
| 7629 | const auto iShouldStretch = shouldStretch( |
| 7630 | inlineSelfAlign, this, iStartOffsetIsAuto, iEndOffsetIsAuto); |
| 7631 | const auto bShouldStretch = |
| 7632 | shouldStretch(blockSelfAlign, this, bStartOffsetIsAuto, bEndOffsetIsAuto); |
| 7633 | const auto iSizeIsAuto = styleISize->IsAuto(); |
| 7634 | // Note(dshin, bug 1789477): `auto` in the context of abs-element uses |
| 7635 | // stretch-fit sizing, given specific alignment conditions [1]. Effectively, |
| 7636 | // `auto` is `stretch`. `nsLayoutUtils::IsAutoBSize` is not the right tool |
| 7637 | // here, since the mapping is explicit, and it's incorrect to e.g. map |
| 7638 | // `fit-content` to `stretch`. |
| 7639 | // `-moz-available` behaves like `auto` in general, so map the same way. |
| 7640 | // When Bug 567039 brings `-moz-available` into alignment with `stretch`, this |
| 7641 | // special check can be removed. TODO(dshin): we're probably duplicating the |
| 7642 | // `stretch` logic here, since `stretch` is `stretch-fit` sizing [2]. |
| 7643 | // |
| 7644 | // [1]: https://drafts.csswg.org/css-position/#abspos-auto-size |
| 7645 | // [2]: https://drafts.csswg.org/css-sizing-4/#valdef-width-stretch |
| 7646 | const auto bSizeIsAuto = styleBSize->IsAuto() || styleBSize->IsMozAvailable(); |
| 7647 | if (bSizeIsAuto && bShouldStretch) { |
| 7648 | result.BSize(aWM) = nsLayoutUtils::ComputeStretchContentBoxBSize( |
| 7649 | aCBSize.BSize(aWM), aMargin.BSize(aWM), aBorderPadding.BSize(aWM)); |
| 7650 | } |
| 7651 | if (iSizeIsAuto) { |
| 7652 | if (iShouldStretch) { |
| 7653 | // inline-size to make our margin-box fill the containing block: |
| 7654 | result.ISize(aWM) = nsLayoutUtils::ComputeStretchContentBoxISize( |
| 7655 | aCBSize.ISize(aWM), aMargin.ISize(aWM), aBorderPadding.ISize(aWM)); |
| 7656 | } else { |
| 7657 | // inline-size to make our margin-box fill aAvailableISize: |
| 7658 | nscoord availBased = nsLayoutUtils::ComputeStretchContentBoxISize( |
| 7659 | aAvailableISize, aMargin.ISize(aWM), aBorderPadding.ISize(aWM)); |
| 7660 | |
| 7661 | const nscoord bSize = ComputeBSizeValueAsPercentageBasis( |
| 7662 | styleBSize->IsAuto() && result.BSize(aWM) != NS_UNCONSTRAINEDSIZE |
| 7663 | ? StyleSize::FromAppUnits(result.BSize(aWM)) |
| 7664 | : *styleBSize, |
| 7665 | *stylePos->MinBSize(aWM, anchorResolutionParams.mBaseParams), |
| 7666 | *stylePos->MaxBSize(aWM, anchorResolutionParams.mBaseParams), |
| 7667 | aCBSize.BSize(aWM), boxSizingAdjust.BSize(aWM), aMargin.BSize(aWM), |
| 7668 | aBorderPadding.BSize(aWM)); |
| 7669 | |
| 7670 | const IntrinsicSizeInput input( |
| 7671 | aSizingInput.mRenderingContext, |
| 7672 | Some(aCBSize.ConvertTo(GetWritingMode(), aWM)), |
| 7673 | Some(LogicalSize(aWM, NS_UNCONSTRAINEDSIZE, bSize) |
| 7674 | .ConvertTo(GetWritingMode(), aWM))); |
| 7675 | result.ISize(aWM) = ShrinkISizeToFit(input, availBased, aFlags); |
| 7676 | } |
| 7677 | } |
| 7678 | |
| 7679 | const auto& aspectRatio = aSizeOverrides.mAspectRatio |
| 7680 | ? *aSizeOverrides.mAspectRatio |
| 7681 | : GetAspectRatio(); |
| 7682 | if (aspectRatio) { |
| 7683 | auto aspectRatioUsage = AspectRatioUsage::None; |
| 7684 | if (iSizeIsAuto != bSizeIsAuto) { |
| 7685 | // Auto axis is dependent. |
| 7686 | if (iSizeIsAuto) { |
| 7687 | aspectRatioUsage = AspectRatioUsage::ToComputeBSize; |
| 7688 | } else { |
| 7689 | aspectRatioUsage = AspectRatioUsage::ToComputeISize; |
| 7690 | } |
| 7691 | } else if (iSizeIsAuto) { |
| 7692 | // Both axes are `auto`. |
| 7693 | if (iShouldStretch != bShouldStretch) { |
| 7694 | // If an axis has stretch, that behaves like a definite size. |
| 7695 | aspectRatioUsage = iShouldStretch ? AspectRatioUsage::ToComputeBSize |
| 7696 | : AspectRatioUsage::ToComputeISize; |
| 7697 | } else if (!iShouldStretch) { |
| 7698 | // If one axis has `auto` inset, that is the ratio dependent axis, |
| 7699 | // otherwise the block axis is. |
| 7700 | const bool inlineInsetHasAuto = iStartOffsetIsAuto || iEndOffsetIsAuto; |
| 7701 | const bool blockInsetHasAuto = bStartOffsetIsAuto || bEndOffsetIsAuto; |
| 7702 | aspectRatioUsage = inlineInsetHasAuto && !blockInsetHasAuto |
| 7703 | ? AspectRatioUsage::ToComputeISize |
| 7704 | : AspectRatioUsage::ToComputeBSize; |
| 7705 | } |
| 7706 | } |
| 7707 | |
| 7708 | if (aspectRatioUsage == AspectRatioUsage::ToComputeBSize && |
| 7709 | !bShouldStretch) { |
| 7710 | result.BSize(aWM) = aspectRatio.ComputeRatioDependentSize( |
| 7711 | LogicalAxis::Block, aWM, result.ISize(aWM), boxSizingAdjust); |
| 7712 | } else if (aspectRatioUsage == AspectRatioUsage::ToComputeISize && |
| 7713 | !iShouldStretch && result.BSize(aWM) != NS_UNCONSTRAINEDSIZE) { |
| 7714 | result.ISize(aWM) = aspectRatio.ComputeRatioDependentSize( |
| 7715 | LogicalAxis::Inline, aWM, result.BSize(aWM), boxSizingAdjust); |
| 7716 | } |
| 7717 | } |
| 7718 | |
| 7719 | return result; |
| 7720 | } |
| 7721 | |
| 7722 | nscoord nsIFrame::ShrinkISizeToFit(const IntrinsicSizeInput& aInput, |
| 7723 | nscoord aISizeInCB, |
| 7724 | ComputeSizeFlags aFlags) { |
| 7725 | // If we're a container for font size inflation, then shrink |
| 7726 | // wrapping inside of us should not apply font size inflation. |
| 7727 | AutoMaybeDisableFontInflation an(this); |
| 7728 | |
| 7729 | nscoord result; |
| 7730 | nscoord minISize = GetMinISize(aInput); |
| 7731 | if (minISize > aISizeInCB) { |
| 7732 | const bool clamp = aFlags.contains(ComputeSizeFlag::IClampMarginBoxMinSize); |
| 7733 | result = MOZ_UNLIKELY(clamp)(__builtin_expect(!!(clamp), 0)) ? aISizeInCB : minISize; |
| 7734 | } else { |
| 7735 | nscoord prefISize = GetPrefISize(aInput); |
| 7736 | if (prefISize > aISizeInCB) { |
| 7737 | result = aISizeInCB; |
| 7738 | } else { |
| 7739 | result = prefISize; |
| 7740 | } |
| 7741 | } |
| 7742 | return result; |
| 7743 | } |
| 7744 | |
| 7745 | nscoord nsIFrame::IntrinsicISizeFromInline(const IntrinsicSizeInput& aInput, |
| 7746 | IntrinsicISizeType aType) { |
| 7747 | MOZ_ASSERT(!IsContainerForFontSizeInflation(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!IsContainerForFontSizeInflation())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!IsContainerForFontSizeInflation ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!IsContainerForFontSizeInflation()" " (" "Should not be a container for font size inflation!" ")", "./../../../layout/generic/nsIFrame.cpp", 7748); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!IsContainerForFontSizeInflation()" ") (" "Should not be a container for font size inflation!" ")"); do { MOZ_CrashSequence(__null, 7748); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 7748 | "Should not be a container for font size inflation!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!IsContainerForFontSizeInflation())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!IsContainerForFontSizeInflation ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!IsContainerForFontSizeInflation()" " (" "Should not be a container for font size inflation!" ")", "./../../../layout/generic/nsIFrame.cpp", 7748); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!IsContainerForFontSizeInflation()" ") (" "Should not be a container for font size inflation!" ")"); do { MOZ_CrashSequence(__null, 7748); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7749 | |
| 7750 | if (aType == IntrinsicISizeType::MinISize) { |
| 7751 | InlineMinISizeData data; |
| 7752 | AddInlineMinISize(aInput, &data); |
| 7753 | data.ForceBreak(); |
| 7754 | return data.mPrevLines; |
| 7755 | } |
| 7756 | |
| 7757 | InlinePrefISizeData data; |
| 7758 | AddInlinePrefISize(aInput, &data); |
| 7759 | data.ForceBreak(); |
| 7760 | return data.mPrevLines; |
| 7761 | } |
| 7762 | |
| 7763 | nscoord nsIFrame::ComputeISizeValueFromAspectRatio( |
| 7764 | WritingMode aWM, const LogicalSize& aCBSize, |
| 7765 | const LogicalSize& aContentEdgeToBoxSizing, const LengthPercentage& aBSize, |
| 7766 | const AspectRatio& aAspectRatio) const { |
| 7767 | MOZ_ASSERT(aAspectRatio, "Must have a valid AspectRatio!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aAspectRatio)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aAspectRatio))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aAspectRatio" " (" "Must have a valid AspectRatio!" ")", "./../../../layout/generic/nsIFrame.cpp" , 7767); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aAspectRatio" ") (" "Must have a valid AspectRatio!" ")"); do { MOZ_CrashSequence (__null, 7767); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 7768 | const nscoord bSize = nsLayoutUtils::ComputeBSizeValue( |
| 7769 | aCBSize.BSize(aWM), aContentEdgeToBoxSizing.BSize(aWM), aBSize); |
| 7770 | return aAspectRatio.ComputeRatioDependentSize(LogicalAxis::Inline, aWM, bSize, |
| 7771 | aContentEdgeToBoxSizing); |
| 7772 | } |
| 7773 | |
| 7774 | nsIFrame::ISizeComputationResult nsIFrame::ComputeISizeValue( |
| 7775 | gfxContext* aRenderingContext, const WritingMode aWM, |
| 7776 | const LogicalSize& aCBSize, const LogicalSize& aMargin, |
| 7777 | const LogicalSize& aBorderPadding, ExtremumLength aSize, |
| 7778 | Maybe<nscoord> aAvailableISizeOverride, const StyleSize& aStyleBSize, |
| 7779 | const AspectRatio& aAspectRatio, ComputeSizeFlags aFlags) { |
| 7780 | const auto* stylePos = StylePosition(); |
| 7781 | const LogicalSize contentEdgeToBoxSizing = |
| 7782 | stylePos->mBoxSizing == StyleBoxSizing::BorderBox ? aBorderPadding |
| 7783 | : LogicalSize(aWM); |
| 7784 | auto GetAvailableISize = [&]() { |
| 7785 | return aCBSize.ISize(aWM) - aMargin.ISize(aWM) - aBorderPadding.ISize(aWM); |
| 7786 | }; |
| 7787 | |
| 7788 | // If 'this' is a container for font size inflation, then shrink |
| 7789 | // wrapping inside of it should not apply font size inflation. |
| 7790 | AutoMaybeDisableFontInflation an(this); |
| 7791 | // If we have an aspect-ratio and a definite block size, we should use them to |
| 7792 | // resolve the sizes with intrinsic keywords. |
| 7793 | // https://github.com/w3c/csswg-drafts/issues/5032 |
| 7794 | Maybe<nscoord> iSizeFromAspectRatio = [&]() -> Maybe<nscoord> { |
| 7795 | if (aSize == ExtremumLength::MozAvailable || |
| 7796 | aSize == ExtremumLength::Stretch) { |
| 7797 | return Nothing(); |
| 7798 | } |
| 7799 | if (!aAspectRatio) { |
| 7800 | return Nothing(); |
| 7801 | } |
| 7802 | if (nsLayoutUtils::IsAutoBSize(aStyleBSize, aCBSize.BSize(aWM))) { |
| 7803 | return Nothing(); |
| 7804 | } |
| 7805 | const nscoord bSize = nsLayoutUtils::ComputeBSizeValueHandlingStretch( |
| 7806 | aCBSize.BSize(aWM), aMargin.BSize(aWM), aBorderPadding.BSize(aWM), |
| 7807 | contentEdgeToBoxSizing.BSize(aWM), aStyleBSize); |
| 7808 | return Some(aAspectRatio.ComputeRatioDependentSize( |
| 7809 | LogicalAxis::Inline, aWM, bSize, contentEdgeToBoxSizing)); |
| 7810 | }(); |
| 7811 | |
| 7812 | const auto anchorResolutionParams = AnchorPosResolutionParams::From(this); |
| 7813 | const nscoord bSize = ComputeBSizeValueAsPercentageBasis( |
| 7814 | aStyleBSize, *stylePos->MinBSize(aWM, anchorResolutionParams), |
| 7815 | *stylePos->MaxBSize(aWM, anchorResolutionParams), aCBSize.BSize(aWM), |
| 7816 | contentEdgeToBoxSizing.BSize(aWM), aMargin.BSize(aWM), |
| 7817 | aBorderPadding.BSize(aWM)); |
| 7818 | const IntrinsicSizeInput input( |
| 7819 | aRenderingContext, Some(aCBSize.ConvertTo(GetWritingMode(), aWM)), |
| 7820 | Some(LogicalSize(aWM, NS_UNCONSTRAINEDSIZE, bSize) |
| 7821 | .ConvertTo(GetWritingMode(), aWM))); |
| 7822 | nscoord result; |
| 7823 | switch (aSize) { |
| 7824 | case ExtremumLength::MaxContent: |
| 7825 | result = |
| 7826 | iSizeFromAspectRatio ? *iSizeFromAspectRatio : GetPrefISize(input); |
| 7827 | NS_ASSERTION(result >= 0, "inline-size less than zero")do { if (!(result >= 0)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "inline-size less than zero", "result >= 0", "./../../../layout/generic/nsIFrame.cpp" , 7827); MOZ_PretendNoReturn(); } } while (0); |
| 7828 | return {result, iSizeFromAspectRatio ? AspectRatioUsage::ToComputeISize |
| 7829 | : AspectRatioUsage::None}; |
| 7830 | case ExtremumLength::MinContent: |
| 7831 | result = |
| 7832 | iSizeFromAspectRatio ? *iSizeFromAspectRatio : GetMinISize(input); |
| 7833 | NS_ASSERTION(result >= 0, "inline-size less than zero")do { if (!(result >= 0)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "inline-size less than zero", "result >= 0", "./../../../layout/generic/nsIFrame.cpp" , 7833); MOZ_PretendNoReturn(); } } while (0); |
| 7834 | if (MOZ_UNLIKELY((__builtin_expect(!!(aFlags.contains(ComputeSizeFlag::IClampMarginBoxMinSize )), 0)) |
| 7835 | aFlags.contains(ComputeSizeFlag::IClampMarginBoxMinSize))(__builtin_expect(!!(aFlags.contains(ComputeSizeFlag::IClampMarginBoxMinSize )), 0))) { |
| 7836 | result = std::min(GetAvailableISize(), result); |
| 7837 | } |
| 7838 | return {result, iSizeFromAspectRatio ? AspectRatioUsage::ToComputeISize |
| 7839 | : AspectRatioUsage::None}; |
| 7840 | case ExtremumLength::FitContentFunction: |
| 7841 | case ExtremumLength::FitContent: { |
| 7842 | nscoord pref = NS_UNCONSTRAINEDSIZE; |
| 7843 | nscoord min = 0; |
| 7844 | if (iSizeFromAspectRatio) { |
| 7845 | // The min-content and max-content size are identical and equal to the |
| 7846 | // size computed from the block size and the aspect ratio. |
| 7847 | pref = min = *iSizeFromAspectRatio; |
| 7848 | } else { |
| 7849 | pref = GetPrefISize(input); |
| 7850 | min = GetMinISize(input); |
| 7851 | } |
| 7852 | |
| 7853 | const nscoord fill = aAvailableISizeOverride ? *aAvailableISizeOverride |
| 7854 | : GetAvailableISize(); |
| 7855 | if (MOZ_UNLIKELY((__builtin_expect(!!(aFlags.contains(ComputeSizeFlag::IClampMarginBoxMinSize )), 0)) |
| 7856 | aFlags.contains(ComputeSizeFlag::IClampMarginBoxMinSize))(__builtin_expect(!!(aFlags.contains(ComputeSizeFlag::IClampMarginBoxMinSize )), 0))) { |
| 7857 | min = std::min(min, fill); |
| 7858 | } |
| 7859 | result = std::max(min, std::min(pref, fill)); |
| 7860 | NS_ASSERTION(result >= 0, "inline-size less than zero")do { if (!(result >= 0)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "inline-size less than zero", "result >= 0", "./../../../layout/generic/nsIFrame.cpp" , 7860); MOZ_PretendNoReturn(); } } while (0); |
| 7861 | return {result}; |
| 7862 | } |
| 7863 | case ExtremumLength::MozAvailable: |
| 7864 | case ExtremumLength::Stretch: |
| 7865 | return {GetAvailableISize()}; |
| 7866 | } |
| 7867 | MOZ_ASSERT_UNREACHABLE("Unknown extremum length?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Unknown extremum length?" ")", "./../../../layout/generic/nsIFrame.cpp" , 7867); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Unknown extremum length?" ")"); do { MOZ_CrashSequence(__null, 7867); __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 7868 | return {}; |
| 7869 | } |
| 7870 | |
| 7871 | nscoord nsIFrame::ComputeISizeValue(const WritingMode aWM, |
| 7872 | const LogicalSize& aCBSize, |
| 7873 | const LogicalSize& aContentEdgeToBoxSizing, |
| 7874 | const LengthPercentage& aSize) const { |
| 7875 | LAYOUT_WARN_IF_FALSE(do { if ((__builtin_expect(!!(mozilla::detail::log_test(sLayoutLog , mozilla::LogLevel::Warning)), 0)) && !(aCBSize.ISize (aWM) != NS_UNCONSTRAINEDSIZE)) { mozilla::detail::LayoutLogWarning ("have unconstrained inline-size; this should only result from " "very large sizes, not attempts at intrinsic inline-size " "calculation" , "aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE", "./../../../layout/generic/nsIFrame.cpp" , 7879); } } while (0) |
| 7876 | aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE,do { if ((__builtin_expect(!!(mozilla::detail::log_test(sLayoutLog , mozilla::LogLevel::Warning)), 0)) && !(aCBSize.ISize (aWM) != NS_UNCONSTRAINEDSIZE)) { mozilla::detail::LayoutLogWarning ("have unconstrained inline-size; this should only result from " "very large sizes, not attempts at intrinsic inline-size " "calculation" , "aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE", "./../../../layout/generic/nsIFrame.cpp" , 7879); } } while (0) |
| 7877 | "have unconstrained inline-size; this should only result from "do { if ((__builtin_expect(!!(mozilla::detail::log_test(sLayoutLog , mozilla::LogLevel::Warning)), 0)) && !(aCBSize.ISize (aWM) != NS_UNCONSTRAINEDSIZE)) { mozilla::detail::LayoutLogWarning ("have unconstrained inline-size; this should only result from " "very large sizes, not attempts at intrinsic inline-size " "calculation" , "aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE", "./../../../layout/generic/nsIFrame.cpp" , 7879); } } while (0) |
| 7878 | "very large sizes, not attempts at intrinsic inline-size "do { if ((__builtin_expect(!!(mozilla::detail::log_test(sLayoutLog , mozilla::LogLevel::Warning)), 0)) && !(aCBSize.ISize (aWM) != NS_UNCONSTRAINEDSIZE)) { mozilla::detail::LayoutLogWarning ("have unconstrained inline-size; this should only result from " "very large sizes, not attempts at intrinsic inline-size " "calculation" , "aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE", "./../../../layout/generic/nsIFrame.cpp" , 7879); } } while (0) |
| 7879 | "calculation")do { if ((__builtin_expect(!!(mozilla::detail::log_test(sLayoutLog , mozilla::LogLevel::Warning)), 0)) && !(aCBSize.ISize (aWM) != NS_UNCONSTRAINEDSIZE)) { mozilla::detail::LayoutLogWarning ("have unconstrained inline-size; this should only result from " "very large sizes, not attempts at intrinsic inline-size " "calculation" , "aCBSize.ISize(aWM) != NS_UNCONSTRAINEDSIZE", "./../../../layout/generic/nsIFrame.cpp" , 7879); } } while (0); |
| 7880 | NS_ASSERTION(aCBSize.ISize(aWM) >= 0, "inline-size less than zero")do { if (!(aCBSize.ISize(aWM) >= 0)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "inline-size less than zero", "aCBSize.ISize(aWM) >= 0", "./../../../layout/generic/nsIFrame.cpp", 7880); MOZ_PretendNoReturn (); } } while (0); |
| 7881 | |
| 7882 | nscoord result = aSize.Resolve(aCBSize.ISize(aWM)); |
| 7883 | // The result of a calc() expression might be less than 0; we |
| 7884 | // should clamp at runtime (below). (Percentages and coords that |
| 7885 | // are less than 0 have already been dropped by the parser.) |
| 7886 | result -= aContentEdgeToBoxSizing.ISize(aWM); |
| 7887 | return std::max(0, result); |
| 7888 | } |
| 7889 | |
| 7890 | void nsIFrame::DidReflow(nsPresContext* aPresContext, |
| 7891 | const ReflowInput* aReflowInput) { |
| 7892 | NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS, ("nsIFrame::DidReflow"))do { if ((int(((mozilla::LogModule*)(nsIFrame::sFrameLogModule ))->Level()) & (0x1))) { TraceMsg ("nsIFrame::DidReflow" ); } } while (0); |
| 7893 | |
| 7894 | if (IsHiddenByContentVisibilityOfInFlowParentForLayout()) { |
| 7895 | RemoveStateBits(NS_FRAME_IN_REFLOW); |
| 7896 | return; |
| 7897 | } |
| 7898 | |
| 7899 | SVGObserverUtils::InvalidateDirectRenderingObservers(this); |
| 7900 | |
| 7901 | RemoveStateBits(NS_FRAME_IN_REFLOW | NS_FRAME_FIRST_REFLOW | |
| 7902 | NS_FRAME_IS_DIRTY | NS_FRAME_HAS_DIRTY_CHILDREN); |
| 7903 | |
| 7904 | // Clear bits that were used in ReflowInput::InitResizeFlags (see |
| 7905 | // comment there for why we can't clear it there). |
| 7906 | SetHasBSizeChange(false); |
| 7907 | SetHasPaddingChange(false); |
| 7908 | |
| 7909 | // Notify the percent bsize observer if there is a percent bsize. |
| 7910 | // The observer may be able to initiate another reflow with a computed |
| 7911 | // bsize. This happens in the case where a table cell has no computed |
| 7912 | // bsize but can fabricate one when the cell bsize is known. |
| 7913 | if (aReflowInput && aReflowInput->mPercentBSizeObserver && !GetPrevInFlow()) { |
| 7914 | const auto bsize = aReflowInput->mStylePosition->BSize( |
| 7915 | aReflowInput->GetWritingMode(), |
| 7916 | AnchorPosResolutionParams::From(aReflowInput)); |
| 7917 | if (bsize->HasPercent()) { |
| 7918 | aReflowInput->mPercentBSizeObserver->NotifyPercentBSize(*aReflowInput); |
| 7919 | } |
| 7920 | } |
| 7921 | |
| 7922 | aPresContext->ReflowedFrame(); |
| 7923 | } |
| 7924 | |
| 7925 | /* virtual */ |
| 7926 | bool nsIFrame::CanContinueTextRun() const { |
| 7927 | // By default, a frame will *not* allow a text run to be continued |
| 7928 | // through it. |
| 7929 | return false; |
| 7930 | } |
| 7931 | |
| 7932 | void nsIFrame::Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize, |
| 7933 | const ReflowInput& aReflowInput, |
| 7934 | nsReflowStatus& aStatus) { |
| 7935 | MarkInReflow(); |
| 7936 | DO_GLOBAL_REFLOW_COUNT("nsFrame")aPresContext->CountReflows(("nsFrame"), (nsIFrame*)this);; |
| 7937 | MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aStatus.IsEmpty())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aStatus.IsEmpty()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aStatus.IsEmpty()" " (" "Caller should pass a fresh reflow status!" ")", "./../../../layout/generic/nsIFrame.cpp" , 7937); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aStatus.IsEmpty()" ") (" "Caller should pass a fresh reflow status!" ")"); do { MOZ_CrashSequence(__null, 7937); __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 7938 | aDesiredSize.ClearSize(); |
| 7939 | } |
| 7940 | |
| 7941 | bool nsIFrame::IsContentDisabled() const { |
| 7942 | auto* element = nsGenericHTMLElement::FromNodeOrNull(GetContent()); |
| 7943 | return element && element->IsDisabled(); |
| 7944 | } |
| 7945 | |
| 7946 | bool nsIFrame::IsContentRelevant() const { |
| 7947 | MOZ_ASSERT(StyleDisplay()->ContentVisibility(*this) ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility ::Auto)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility ::Auto))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility::Auto" , "./../../../layout/generic/nsIFrame.cpp", 7948); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility::Auto" ")"); do { MOZ_CrashSequence(__null, 7948); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 7948 | StyleContentVisibility::Auto)do { static_assert( mozilla::detail::AssertionConditionType< decltype(StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility ::Auto)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility ::Auto))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility::Auto" , "./../../../layout/generic/nsIFrame.cpp", 7948); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility::Auto" ")"); do { MOZ_CrashSequence(__null, 7948); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7949 | |
| 7950 | auto* element = Element::FromNodeOrNull(GetContent()); |
| 7951 | MOZ_ASSERT(element)do { static_assert( mozilla::detail::AssertionConditionType< decltype(element)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(element))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("element", "./../../../layout/generic/nsIFrame.cpp" , 7951); AnnotateMozCrashReason("MOZ_ASSERT" "(" "element" ")" ); do { MOZ_CrashSequence(__null, 7951); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7952 | |
| 7953 | Maybe<ContentRelevancy> relevancy = element->GetContentRelevancy(); |
| 7954 | return relevancy.isSome() && !relevancy->isEmpty(); |
| 7955 | } |
| 7956 | |
| 7957 | bool nsIFrame::HidesContent( |
| 7958 | const EnumSet<IncludeContentVisibility>& aInclude) const { |
| 7959 | auto effectiveContentVisibility = StyleDisplay()->ContentVisibility(*this); |
| 7960 | if (aInclude.contains(IncludeContentVisibility::Hidden) && |
| 7961 | effectiveContentVisibility == StyleContentVisibility::Hidden) { |
| 7962 | return true; |
| 7963 | } |
| 7964 | |
| 7965 | if (aInclude.contains(IncludeContentVisibility::Auto) && |
| 7966 | effectiveContentVisibility == StyleContentVisibility::Auto) { |
| 7967 | return !IsContentRelevant(); |
| 7968 | } |
| 7969 | |
| 7970 | return false; |
| 7971 | } |
| 7972 | |
| 7973 | bool nsIFrame::HidesContentForLayout() const { |
| 7974 | return HidesContent() && !PresShell()->IsForcingLayoutForHiddenContent(this); |
| 7975 | } |
| 7976 | |
| 7977 | bool nsIFrame::IsHiddenByContentVisibilityOfInFlowParentForLayout() const { |
| 7978 | const auto* parent = GetInFlowParent(); |
| 7979 | // The anonymous children owned by parent are important for properly sizing |
| 7980 | // their parents. |
| 7981 | return parent && parent->HidesContentForLayout() && |
| 7982 | !(parent->HasAnyStateBits(NS_FRAME_OWNS_ANON_BOXES) && |
| 7983 | Style()->IsAnonBox()); |
| 7984 | } |
| 7985 | |
| 7986 | nsIFrame* nsIFrame::GetClosestContentVisibilityAncestor( |
| 7987 | const EnumSet<IncludeContentVisibility>& aInclude) const { |
| 7988 | // Before we walk the frame tree: check PresShell bookkeeping to see if there |
| 7989 | // exists *any* frame with a content-visibility value that matches aInclude. |
| 7990 | mozilla::PresShell* ps = PresShell(); |
| 7991 | bool doesAnySuchFrameExist = |
| 7992 | (aInclude.contains(IncludeContentVisibility::Hidden) && |
| 7993 | ps->HasContentVisibilityHiddenFrames()) || |
| 7994 | (aInclude.contains(IncludeContentVisibility::Auto) && |
| 7995 | ps->HasContentVisibilityAutoFrames()); |
| 7996 | |
| 7997 | if (!doesAnySuchFrameExist) { |
| 7998 | return nullptr; |
| 7999 | } |
| 8000 | |
| 8001 | auto* parent = GetInFlowParent(); |
| 8002 | bool isAnonymousBlock = Style()->IsAnonBox() && parent && |
| 8003 | parent->HasAnyStateBits(NS_FRAME_OWNS_ANON_BOXES); |
| 8004 | for (nsIFrame* cur = parent; cur; cur = cur->GetInFlowParent()) { |
| 8005 | if (!isAnonymousBlock && cur->HidesContent(aInclude)) { |
| 8006 | return cur; |
| 8007 | } |
| 8008 | |
| 8009 | // Anonymous boxes are not hidden by the content-visibility of their first |
| 8010 | // non-anonymous ancestor, but can be hidden by ancestors further up the |
| 8011 | // tree. |
| 8012 | isAnonymousBlock = false; |
| 8013 | } |
| 8014 | |
| 8015 | return nullptr; |
| 8016 | } |
| 8017 | |
| 8018 | static bool IsClosedDetailsSlot(const Element* aElement) { |
| 8019 | const auto* slot = HTMLSlotElement::FromNodeOrNull(aElement); |
| 8020 | if (!slot || slot->HasName()) { |
| 8021 | return false; |
| 8022 | } |
| 8023 | const auto* details = |
| 8024 | HTMLDetailsElement::FromNodeOrNull(slot->GetContainingShadowHost()); |
| 8025 | return details && !details->GetBoolAttr(nsGkAtoms::open); |
| 8026 | } |
| 8027 | |
| 8028 | bool nsIFrame::IsHiddenUntilFoundOrClosedDetails() const { |
| 8029 | for (const auto* f = this; f; f = f->GetInFlowParent()) { |
| 8030 | if (f->HidesContent(nsIFrame::IncludeContentVisibility::Hidden)) { |
| 8031 | if (const auto* element = Element::FromNode(f->GetContent()); |
| 8032 | element && |
| 8033 | !element->AttrValueIs(kNameSpaceID_None, nsGkAtoms::hidden, |
| 8034 | nsGkAtoms::untilFound, eIgnoreCase) && |
| 8035 | !IsClosedDetailsSlot(element)) { |
| 8036 | return false; |
| 8037 | } |
| 8038 | } |
| 8039 | } |
| 8040 | return true; |
| 8041 | } |
| 8042 | |
| 8043 | bool nsIFrame::IsHiddenByContentVisibilityOnAnyAncestor( |
| 8044 | const EnumSet<IncludeContentVisibility>& aInclude) const { |
| 8045 | return !!GetClosestContentVisibilityAncestor(aInclude); |
| 8046 | } |
| 8047 | |
| 8048 | bool nsIFrame::HasSelectionInSubtree() { |
| 8049 | if (IsSelected()) { |
| 8050 | return true; |
| 8051 | } |
| 8052 | |
| 8053 | RefPtr<nsFrameSelection> frameSelection = GetFrameSelection(); |
| 8054 | if (!frameSelection) { |
| 8055 | return false; |
| 8056 | } |
| 8057 | |
| 8058 | const Selection& selection = frameSelection->NormalSelection(); |
| 8059 | |
| 8060 | for (uint32_t i = 0; i < selection.RangeCount(); i++) { |
| 8061 | auto* range = selection.GetRangeAt(i); |
| 8062 | MOZ_ASSERT(range)do { static_assert( mozilla::detail::AssertionConditionType< decltype(range)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(range))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("range", "./../../../layout/generic/nsIFrame.cpp" , 8062); AnnotateMozCrashReason("MOZ_ASSERT" "(" "range" ")") ; do { MOZ_CrashSequence(__null, 8062); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8063 | |
| 8064 | const auto* commonAncestorNode = |
| 8065 | range->GetRegisteredClosestCommonInclusiveAncestor(); |
| 8066 | if (commonAncestorNode && |
| 8067 | commonAncestorNode->IsInclusiveDescendantOf(GetContent())) { |
| 8068 | return true; |
| 8069 | } |
| 8070 | } |
| 8071 | |
| 8072 | return false; |
| 8073 | } |
| 8074 | |
| 8075 | bool nsIFrame::UpdateIsRelevantContent( |
| 8076 | const ContentRelevancy& aRelevancyToUpdate) { |
| 8077 | MOZ_ASSERT(StyleDisplay()->ContentVisibility(*this) ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility ::Auto)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility ::Auto))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility::Auto" , "./../../../layout/generic/nsIFrame.cpp", 8078); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility::Auto" ")"); do { MOZ_CrashSequence(__null, 8078); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 8078 | StyleContentVisibility::Auto)do { static_assert( mozilla::detail::AssertionConditionType< decltype(StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility ::Auto)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility ::Auto))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility::Auto" , "./../../../layout/generic/nsIFrame.cpp", 8078); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "StyleDisplay()->ContentVisibility(*this) == StyleContentVisibility::Auto" ")"); do { MOZ_CrashSequence(__null, 8078); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8079 | |
| 8080 | auto* element = Element::FromNodeOrNull(GetContent()); |
| 8081 | MOZ_ASSERT(element)do { static_assert( mozilla::detail::AssertionConditionType< decltype(element)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(element))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("element", "./../../../layout/generic/nsIFrame.cpp" , 8081); AnnotateMozCrashReason("MOZ_ASSERT" "(" "element" ")" ); do { MOZ_CrashSequence(__null, 8081); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8082 | |
| 8083 | ContentRelevancy newRelevancy; |
| 8084 | Maybe<ContentRelevancy> oldRelevancy = element->GetContentRelevancy(); |
| 8085 | if (oldRelevancy.isSome()) { |
| 8086 | newRelevancy = *oldRelevancy; |
| 8087 | } |
| 8088 | |
| 8089 | auto setRelevancyValue = [&](ContentRelevancyReason reason, bool value) { |
| 8090 | if (value) { |
| 8091 | newRelevancy += reason; |
| 8092 | } else { |
| 8093 | newRelevancy -= reason; |
| 8094 | } |
| 8095 | }; |
| 8096 | |
| 8097 | if (!oldRelevancy || |
| 8098 | aRelevancyToUpdate.contains(ContentRelevancyReason::Visible)) { |
| 8099 | Maybe<bool> visible = element->GetVisibleForContentVisibility(); |
| 8100 | if (visible.isSome()) { |
| 8101 | setRelevancyValue(ContentRelevancyReason::Visible, *visible); |
| 8102 | } |
| 8103 | } |
| 8104 | |
| 8105 | if (!oldRelevancy || |
| 8106 | aRelevancyToUpdate.contains(ContentRelevancyReason::FocusInSubtree)) { |
| 8107 | setRelevancyValue(ContentRelevancyReason::FocusInSubtree, |
| 8108 | element->State().HasAtLeastOneOfStates( |
| 8109 | ElementState::FOCUS_WITHIN | ElementState::FOCUS)); |
| 8110 | } |
| 8111 | |
| 8112 | if (!oldRelevancy || |
| 8113 | aRelevancyToUpdate.contains(ContentRelevancyReason::Selected)) { |
| 8114 | setRelevancyValue(ContentRelevancyReason::Selected, |
| 8115 | HasSelectionInSubtree()); |
| 8116 | } |
| 8117 | |
| 8118 | // If the proximity to the viewport has not been determined yet, |
| 8119 | // and neither the element nor its contents are focused or selected, |
| 8120 | // we should wait for the determination of the proximity. Otherwise, |
| 8121 | // there might be a redundant contentvisibilityautostatechange event. |
| 8122 | // See https://github.com/w3c/csswg-drafts/issues/9803 |
| 8123 | bool isProximityToViewportDetermined = |
| 8124 | oldRelevancy ? true : element->GetVisibleForContentVisibility().isSome(); |
| 8125 | if (!isProximityToViewportDetermined && newRelevancy.isEmpty()) { |
| 8126 | return false; |
| 8127 | } |
| 8128 | |
| 8129 | bool overallRelevancyChanged = |
| 8130 | !oldRelevancy || oldRelevancy->isEmpty() != newRelevancy.isEmpty(); |
| 8131 | if (!oldRelevancy || *oldRelevancy != newRelevancy) { |
| 8132 | element->SetContentRelevancy(newRelevancy); |
| 8133 | } |
| 8134 | |
| 8135 | if (!overallRelevancyChanged) { |
| 8136 | return false; |
| 8137 | } |
| 8138 | |
| 8139 | HandleLastRememberedSize(); |
| 8140 | PresContext()->SetNeedsToUpdateHiddenByContentVisibilityForAnimations(); |
| 8141 | PresShell()->FrameNeedsReflow( |
| 8142 | this, IntrinsicDirty::FrameAncestorsAndDescendants, NS_FRAME_IS_DIRTY); |
| 8143 | InvalidateFrame(); |
| 8144 | |
| 8145 | ContentVisibilityAutoStateChangeEventInit init; |
| 8146 | init.mSkipped = newRelevancy.isEmpty(); |
| 8147 | RefPtr<ContentVisibilityAutoStateChangeEvent> event = |
| 8148 | ContentVisibilityAutoStateChangeEvent::Constructor( |
| 8149 | element, u"contentvisibilityautostatechange"_ns, init); |
| 8150 | |
| 8151 | // Per |
| 8152 | // https://drafts.csswg.org/css-contain/#content-visibility-auto-state-changed |
| 8153 | // "This event is dispatched by posting a task at the time when the state |
| 8154 | // change occurs." |
| 8155 | auto asyncDispatcher = |
| 8156 | MakeRefPtr<AsyncEventDispatcher>(element, event.forget()); |
| 8157 | DebugOnly<nsresult> rv = asyncDispatcher->PostDOMEvent(); |
| 8158 | NS_ASSERTION(NS_SUCCEEDED(rv), "AsyncEventDispatcher failed to dispatch")do { if (!(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1 ))))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "AsyncEventDispatcher failed to dispatch" , "NS_SUCCEEDED(rv)", "./../../../layout/generic/nsIFrame.cpp" , 8158); MOZ_PretendNoReturn(); } } while (0); |
| 8159 | return true; |
| 8160 | } |
| 8161 | |
| 8162 | nsresult nsIFrame::CharacterDataChanged(const CharacterDataChangeInfo&) { |
| 8163 | MOZ_ASSERT_UNREACHABLE("should only be called for text frames")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "should only be called for text frames" ")", "./../../../layout/generic/nsIFrame.cpp" , 8163); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "should only be called for text frames" ")"); do { MOZ_CrashSequence(__null, 8163); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8164 | return NS_OK; |
| 8165 | } |
| 8166 | |
| 8167 | nsresult nsIFrame::AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute, |
| 8168 | AttrModType) { |
| 8169 | return NS_OK; |
| 8170 | } |
| 8171 | |
| 8172 | nsIFrame* nsIFrame::GetPrevContinuation() const { return nullptr; } |
| 8173 | |
| 8174 | void nsIFrame::SetPrevContinuation(nsIFrame*) { |
| 8175 | MOZ_ASSERT_UNREACHABLE("Not splittable!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Not splittable!" ")", "./../../../layout/generic/nsIFrame.cpp" , 8175); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Not splittable!" ")"); do { MOZ_CrashSequence (__null, 8175); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 8176 | } |
| 8177 | |
| 8178 | nsIFrame* nsIFrame::GetNextContinuation() const { return nullptr; } |
| 8179 | |
| 8180 | void nsIFrame::SetNextContinuation(nsIFrame*) { |
| 8181 | MOZ_ASSERT_UNREACHABLE("Not splittable!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Not splittable!" ")", "./../../../layout/generic/nsIFrame.cpp" , 8181); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Not splittable!" ")"); do { MOZ_CrashSequence (__null, 8181); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 8182 | } |
| 8183 | |
| 8184 | nsIFrame* nsIFrame::GetPrevInFlow() const { return nullptr; } |
| 8185 | |
| 8186 | void nsIFrame::SetPrevInFlow(nsIFrame*) { |
| 8187 | MOZ_ASSERT_UNREACHABLE("Not splittable!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Not splittable!" ")", "./../../../layout/generic/nsIFrame.cpp" , 8187); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Not splittable!" ")"); do { MOZ_CrashSequence (__null, 8187); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 8188 | } |
| 8189 | |
| 8190 | nsIFrame* nsIFrame::GetNextInFlow() const { return nullptr; } |
| 8191 | |
| 8192 | void nsIFrame::SetNextInFlow(nsIFrame*) { |
| 8193 | MOZ_ASSERT_UNREACHABLE("Not splittable!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Not splittable!" ")", "./../../../layout/generic/nsIFrame.cpp" , 8193); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Not splittable!" ")"); do { MOZ_CrashSequence (__null, 8193); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 8194 | } |
| 8195 | |
| 8196 | nsIFrame* nsIFrame::GetTailContinuation() { |
| 8197 | nsIFrame* frame = this; |
| 8198 | while (frame->HasAnyStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER)) { |
| 8199 | frame = frame->GetPrevContinuation(); |
| 8200 | NS_ASSERTION(frame, "first continuation can't be overflow container")do { if (!(frame)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "first continuation can't be overflow container" , "frame", "./../../../layout/generic/nsIFrame.cpp", 8200); MOZ_PretendNoReturn (); } } while (0); |
| 8201 | } |
| 8202 | for (nsIFrame* next = frame->GetNextContinuation(); |
| 8203 | next && !next->HasAnyStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER); |
| 8204 | next = frame->GetNextContinuation()) { |
| 8205 | frame = next; |
| 8206 | } |
| 8207 | |
| 8208 | MOZ_ASSERT(frame, "illegal state in continuation chain.")do { static_assert( mozilla::detail::AssertionConditionType< decltype(frame)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(frame))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("frame" " (" "illegal state in continuation chain." ")", "./../../../layout/generic/nsIFrame.cpp", 8208); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "frame" ") (" "illegal state in continuation chain." ")"); do { MOZ_CrashSequence(__null, 8208); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8209 | return frame; |
| 8210 | } |
| 8211 | |
| 8212 | nsIWidget* nsIFrame::GetOwnWidget() const { |
| 8213 | if (IsMenuPopupFrame()) { |
| 8214 | return static_cast<const nsMenuPopupFrame*>(this)->GetWidget(); |
| 8215 | } |
| 8216 | if (!GetParent()) { |
| 8217 | return PresShell()->GetOwnWidget(); |
| 8218 | } |
| 8219 | return nullptr; |
| 8220 | } |
| 8221 | |
| 8222 | // aPosition should be a function that returns the position of a frame relative |
| 8223 | // to its parent. |
| 8224 | template <typename PositionGetter> |
| 8225 | static nsPoint OffsetCalculator(const nsIFrame* aThis, const nsIFrame* aOther, |
| 8226 | PositionGetter&& aPosition) { |
| 8227 | static_assert(std::is_invocable_r_v<nsPoint, PositionGetter, const nsIFrame*>, |
| 8228 | "aPosition must be callable as nsPoint(const nsIFrame*)"); |
| 8229 | |
| 8230 | MOZ_ASSERT(aOther, "Must have frame for destination coordinate system!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aOther)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(aOther))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aOther" " (" "Must have frame for destination coordinate system!" ")", "./../../../layout/generic/nsIFrame.cpp", 8230); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aOther" ") (" "Must have frame for destination coordinate system!" ")"); do { MOZ_CrashSequence(__null, 8230); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8231 | |
| 8232 | NS_ASSERTION(aThis->PresContext() == aOther->PresContext(),do { if (!(aThis->PresContext() == aOther->PresContext( ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "GetOffsetTo called on frames in different documents" , "aThis->PresContext() == aOther->PresContext()", "./../../../layout/generic/nsIFrame.cpp" , 8233); MOZ_PretendNoReturn(); } } while (0) |
| 8233 | "GetOffsetTo called on frames in different documents")do { if (!(aThis->PresContext() == aOther->PresContext( ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "GetOffsetTo called on frames in different documents" , "aThis->PresContext() == aOther->PresContext()", "./../../../layout/generic/nsIFrame.cpp" , 8233); MOZ_PretendNoReturn(); } } while (0); |
| 8234 | |
| 8235 | nsPoint offset(0, 0); |
| 8236 | const nsIFrame* f; |
| 8237 | for (f = aThis; f != aOther && f; f = f->GetParent()) { |
| 8238 | offset += aPosition(f); |
| 8239 | } |
| 8240 | |
| 8241 | if (f != aOther) { |
| 8242 | // Looks like aOther wasn't an ancestor of |this|. So now we have |
| 8243 | // the root-frame-relative position of |this| in |offset|. Convert back |
| 8244 | // to the coordinates of aOther |
| 8245 | while (aOther) { |
| 8246 | offset -= aPosition(aOther); |
| 8247 | aOther = aOther->GetParent(); |
| 8248 | } |
| 8249 | } |
| 8250 | |
| 8251 | return offset; |
| 8252 | } |
| 8253 | |
| 8254 | nsPoint nsIFrame::GetOffsetTo(const nsIFrame* aOther) const { |
| 8255 | return OffsetCalculator(this, aOther, [](const nsIFrame* aFrame) { |
| 8256 | return aFrame->GetPosition(); |
| 8257 | }); |
| 8258 | } |
| 8259 | |
| 8260 | nsPoint nsIFrame::GetOffsetToRootFrame() const { |
| 8261 | return GetOffsetTo(PresShell()->GetRootFrame()); |
| 8262 | } |
| 8263 | |
| 8264 | nsPoint nsIFrame::GetOffsetToIgnoringScrolling(const nsIFrame* aOther) const { |
| 8265 | return OffsetCalculator(this, aOther, [](const nsIFrame* aFrame) { |
| 8266 | return aFrame->GetPositionIgnoringScrolling(); |
| 8267 | }); |
| 8268 | } |
| 8269 | |
| 8270 | nsPoint nsIFrame::GetOffsetToIgnoringScrollingAndSticky( |
| 8271 | const nsIFrame* aOther) const { |
| 8272 | return OffsetCalculator(this, aOther, [](const nsIFrame* aFrame) { |
| 8273 | return aFrame->GetPositionIgnoringScrollingAndSticky(); |
| 8274 | }); |
| 8275 | } |
| 8276 | |
| 8277 | nsPoint nsIFrame::GetScrollOffsetTo(const nsIFrame* aOther) const { |
| 8278 | return OffsetCalculator(this, aOther, [](const nsIFrame* aFrame) { |
| 8279 | return aFrame->GetPositionIgnoringScrollingAndSticky() - |
| 8280 | aFrame->GetPosition(); |
| 8281 | }); |
| 8282 | } |
| 8283 | |
| 8284 | nsPoint nsIFrame::GetOffsetToCrossDoc(const nsIFrame* aOther) const { |
| 8285 | return GetOffsetToCrossDoc(aOther, PresContext()->AppUnitsPerDevPixel()); |
| 8286 | } |
| 8287 | |
| 8288 | nsPoint nsIFrame::GetOffsetToCrossDoc(const nsIFrame* aOther, |
| 8289 | const int32_t aAPD) const { |
| 8290 | MOZ_ASSERT(aOther, "Must have frame for destination coordinate system!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aOther)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(aOther))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aOther" " (" "Must have frame for destination coordinate system!" ")", "./../../../layout/generic/nsIFrame.cpp", 8290); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aOther" ") (" "Must have frame for destination coordinate system!" ")"); do { MOZ_CrashSequence(__null, 8290); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8291 | MOZ_DIAGNOSTIC_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(PresContext()->GetRootPresContext() == aOther-> PresContext()->GetRootPresContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(PresContext()->GetRootPresContext () == aOther->PresContext()->GetRootPresContext()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("PresContext()->GetRootPresContext() == aOther->PresContext()->GetRootPresContext()" " (" "trying to get the offset between frames in different document " "hierarchies?" ")", "./../../../layout/generic/nsIFrame.cpp" , 8295); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "PresContext()->GetRootPresContext() == aOther->PresContext()->GetRootPresContext()" ") (" "trying to get the offset between frames in different document " "hierarchies?" ")"); do { MOZ_CrashSequence(__null, 8295); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 8292 | PresContext()->GetRootPresContext() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(PresContext()->GetRootPresContext() == aOther-> PresContext()->GetRootPresContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(PresContext()->GetRootPresContext () == aOther->PresContext()->GetRootPresContext()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("PresContext()->GetRootPresContext() == aOther->PresContext()->GetRootPresContext()" " (" "trying to get the offset between frames in different document " "hierarchies?" ")", "./../../../layout/generic/nsIFrame.cpp" , 8295); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "PresContext()->GetRootPresContext() == aOther->PresContext()->GetRootPresContext()" ") (" "trying to get the offset between frames in different document " "hierarchies?" ")"); do { MOZ_CrashSequence(__null, 8295); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 8293 | aOther->PresContext()->GetRootPresContext(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(PresContext()->GetRootPresContext() == aOther-> PresContext()->GetRootPresContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(PresContext()->GetRootPresContext () == aOther->PresContext()->GetRootPresContext()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("PresContext()->GetRootPresContext() == aOther->PresContext()->GetRootPresContext()" " (" "trying to get the offset between frames in different document " "hierarchies?" ")", "./../../../layout/generic/nsIFrame.cpp" , 8295); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "PresContext()->GetRootPresContext() == aOther->PresContext()->GetRootPresContext()" ") (" "trying to get the offset between frames in different document " "hierarchies?" ")"); do { MOZ_CrashSequence(__null, 8295); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 8294 | "trying to get the offset between frames in different document "do { static_assert( mozilla::detail::AssertionConditionType< decltype(PresContext()->GetRootPresContext() == aOther-> PresContext()->GetRootPresContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(PresContext()->GetRootPresContext () == aOther->PresContext()->GetRootPresContext()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("PresContext()->GetRootPresContext() == aOther->PresContext()->GetRootPresContext()" " (" "trying to get the offset between frames in different document " "hierarchies?" ")", "./../../../layout/generic/nsIFrame.cpp" , 8295); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "PresContext()->GetRootPresContext() == aOther->PresContext()->GetRootPresContext()" ") (" "trying to get the offset between frames in different document " "hierarchies?" ")"); do { MOZ_CrashSequence(__null, 8295); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 8295 | "hierarchies?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(PresContext()->GetRootPresContext() == aOther-> PresContext()->GetRootPresContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(PresContext()->GetRootPresContext () == aOther->PresContext()->GetRootPresContext()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("PresContext()->GetRootPresContext() == aOther->PresContext()->GetRootPresContext()" " (" "trying to get the offset between frames in different document " "hierarchies?" ")", "./../../../layout/generic/nsIFrame.cpp" , 8295); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "PresContext()->GetRootPresContext() == aOther->PresContext()->GetRootPresContext()" ") (" "trying to get the offset between frames in different document " "hierarchies?" ")"); do { MOZ_CrashSequence(__null, 8295); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false); |
| 8296 | |
| 8297 | const nsIFrame* root = nullptr; |
| 8298 | // offset will hold the final offset |
| 8299 | // docOffset holds the currently accumulated offset at the current APD, it |
| 8300 | // will be converted and added to offset when the current APD changes. |
| 8301 | nsPoint offset(0, 0), docOffset(0, 0); |
| 8302 | const nsIFrame* f = this; |
| 8303 | int32_t currAPD = PresContext()->AppUnitsPerDevPixel(); |
| 8304 | while (f && f != aOther) { |
| 8305 | docOffset += f->GetPosition(); |
| 8306 | nsIFrame* parent = f->GetParent(); |
| 8307 | if (parent) { |
| 8308 | f = parent; |
| 8309 | } else { |
| 8310 | nsPoint newOffset(0, 0); |
| 8311 | root = f; |
| 8312 | f = nsLayoutUtils::GetCrossDocParentFrameInProcess(f, &newOffset); |
| 8313 | int32_t newAPD = f ? f->PresContext()->AppUnitsPerDevPixel() : 0; |
| 8314 | if (!f || newAPD != currAPD) { |
| 8315 | // Convert docOffset to the right APD and add it to offset. |
| 8316 | offset += docOffset.ScaleToOtherAppUnits(currAPD, aAPD); |
| 8317 | docOffset.x = docOffset.y = 0; |
| 8318 | } |
| 8319 | currAPD = newAPD; |
| 8320 | docOffset += newOffset; |
| 8321 | } |
| 8322 | } |
| 8323 | if (f == aOther) { |
| 8324 | offset += docOffset.ScaleToOtherAppUnits(currAPD, aAPD); |
| 8325 | } else { |
| 8326 | // Looks like aOther wasn't an ancestor of |this|. So now we have |
| 8327 | // the root-document-relative position of |this| in |offset|. Subtract the |
| 8328 | // root-document-relative position of |aOther| from |offset|. |
| 8329 | // This call won't try to recurse again because root is an ancestor of |
| 8330 | // aOther. |
| 8331 | nsPoint negOffset = aOther->GetOffsetToCrossDoc(root, aAPD); |
| 8332 | offset -= negOffset; |
| 8333 | } |
| 8334 | |
| 8335 | return offset; |
| 8336 | } |
| 8337 | |
| 8338 | CSSIntRect nsIFrame::GetScreenRect() const { |
| 8339 | return CSSIntRect::FromAppUnitsToNearest(GetScreenRectInAppUnits()); |
| 8340 | } |
| 8341 | |
| 8342 | nsRect nsIFrame::GetScreenRectInAppUnits() const { |
| 8343 | nsPresContext* presContext = PresContext(); |
| 8344 | nsIFrame* rootFrame = presContext->PresShell()->GetRootFrame(); |
| 8345 | nsPoint rootScreenPos(0, 0); |
| 8346 | nsPoint rootFrameOffsetInParent(0, 0); |
| 8347 | nsIFrame* rootFrameParent = nsLayoutUtils::GetCrossDocParentFrameInProcess( |
| 8348 | rootFrame, &rootFrameOffsetInParent); |
| 8349 | if (rootFrameParent) { |
| 8350 | nsRect parentScreenRectAppUnits = |
| 8351 | rootFrameParent->GetScreenRectInAppUnits(); |
| 8352 | nsPresContext* parentPresContext = rootFrameParent->PresContext(); |
| 8353 | double parentScale = double(presContext->AppUnitsPerDevPixel()) / |
| 8354 | parentPresContext->AppUnitsPerDevPixel(); |
| 8355 | nsPoint rootPt = |
| 8356 | parentScreenRectAppUnits.TopLeft() + rootFrameOffsetInParent; |
| 8357 | rootScreenPos.x = NS_round(parentScale * rootPt.x); |
| 8358 | rootScreenPos.y = NS_round(parentScale * rootPt.y); |
| 8359 | } else if (nsCOMPtr<nsIWidget> rootWidget = presContext->GetRootWidget()) { |
| 8360 | LayoutDeviceIntPoint rootDevPx = rootWidget->WidgetToScreenOffset(); |
| 8361 | rootScreenPos.x = presContext->DevPixelsToAppUnits(rootDevPx.x); |
| 8362 | rootScreenPos.y = presContext->DevPixelsToAppUnits(rootDevPx.y); |
| 8363 | } |
| 8364 | |
| 8365 | return nsRect(rootScreenPos + GetOffsetTo(rootFrame), GetSize()); |
| 8366 | } |
| 8367 | |
| 8368 | nsIWidget* nsIFrame::GetNearestWidget() const { |
| 8369 | if (!HasAnyStateBits(NS_FRAME_IN_POPUP)) { |
| 8370 | return PresContext()->GetRootWidget(); |
| 8371 | } |
| 8372 | nsPoint unused; |
| 8373 | return GetNearestWidget(unused); |
| 8374 | } |
| 8375 | |
| 8376 | nsIWidget* nsIFrame::GetNearestWidget(nsPoint& aOffset) const { |
| 8377 | aOffset.MoveTo(0, 0); |
| 8378 | nsIFrame* frame = const_cast<nsIFrame*>(this); |
| 8379 | const auto targetAPD = PresContext()->AppUnitsPerDevPixel(); |
| 8380 | auto curAPD = targetAPD; |
| 8381 | do { |
| 8382 | if (auto* widget = frame->GetOwnWidget()) { |
| 8383 | aOffset = aOffset.ScaleToOtherAppUnits(curAPD, targetAPD); |
| 8384 | return widget; |
| 8385 | } |
| 8386 | aOffset += frame->GetPosition(); |
| 8387 | nsPoint crossDocOffset; |
| 8388 | frame = |
| 8389 | nsLayoutUtils::GetCrossDocParentFrameInProcess(frame, &crossDocOffset); |
| 8390 | if (!frame) { |
| 8391 | break; |
| 8392 | } |
| 8393 | auto newAPD = frame->PresContext()->AppUnitsPerDevPixel(); |
| 8394 | aOffset = aOffset.ScaleToOtherAppUnits(curAPD, newAPD); |
| 8395 | aOffset += crossDocOffset; |
| 8396 | curAPD = newAPD; |
| 8397 | } while (true); |
| 8398 | aOffset = aOffset.ScaleToOtherAppUnits(curAPD, targetAPD); |
| 8399 | return PresContext()->GetRootWidget(); |
| 8400 | } |
| 8401 | |
| 8402 | Matrix4x4Flagged nsIFrame::GetTransformMatrix( |
| 8403 | ViewportType aViewportType, RelativeTo aStopAtAncestor, |
| 8404 | nsIFrame** aOutAncestor, TransformMatrixFlags aFlags) const { |
| 8405 | MOZ_ASSERT(aOutAncestor, "Need a place to put the ancestor!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aOutAncestor)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aOutAncestor))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aOutAncestor" " (" "Need a place to put the ancestor!" ")", "./../../../layout/generic/nsIFrame.cpp" , 8405); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aOutAncestor" ") (" "Need a place to put the ancestor!" ")"); do { MOZ_CrashSequence (__null, 8405); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 8406 | |
| 8407 | auto GetPositionMaybeIgnoringScrolling = [aFlags](const nsIFrame* aFrame) { |
| 8408 | return aFlags.contains(TransformMatrixFlag::IgnoreScrolling) |
| 8409 | ? aFrame->GetPositionIgnoringScrollingAndSticky() |
| 8410 | : aFrame->GetPosition(); |
| 8411 | }; |
| 8412 | |
| 8413 | /* If we're transformed, we want to hand back the combination |
| 8414 | * transform/translate matrix that will apply our current transform, then |
| 8415 | * shift us to our parent. |
| 8416 | */ |
| 8417 | const bool isTransformed = IsTransformed(); |
| 8418 | const nsIFrame* zoomedContentRoot = nullptr; |
| 8419 | if (aStopAtAncestor.mViewportType == ViewportType::Visual) { |
| 8420 | zoomedContentRoot = ViewportUtils::IsZoomedContentRoot(this); |
| 8421 | if (zoomedContentRoot) { |
| 8422 | MOZ_ASSERT(aViewportType != ViewportType::Visual)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aViewportType != ViewportType::Visual)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(aViewportType != ViewportType::Visual))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aViewportType != ViewportType::Visual" , "./../../../layout/generic/nsIFrame.cpp", 8422); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aViewportType != ViewportType::Visual" ")" ); do { MOZ_CrashSequence(__null, 8422); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8423 | } |
| 8424 | } |
| 8425 | |
| 8426 | if (isTransformed || zoomedContentRoot) { |
| 8427 | MOZ_ASSERT(GetParent())do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetParent())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(GetParent()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("GetParent()", "./../../../layout/generic/nsIFrame.cpp" , 8427); AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetParent()" ")"); do { MOZ_CrashSequence(__null, 8427); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8428 | Matrix4x4Flagged result; |
| 8429 | int32_t scaleFactor = aFlags.contains(TransformMatrixFlag::InCSSUnits) |
| 8430 | ? AppUnitsPerCSSPixel() |
| 8431 | : PresContext()->AppUnitsPerDevPixel(); |
| 8432 | |
| 8433 | /* Compute the delta to the parent, which we need because we are converting |
| 8434 | * coordinates to our parent. |
| 8435 | */ |
| 8436 | if (isTransformed) { |
| 8437 | // Note: this converts from Matrix4x4 to Matrix4x4Flagged. |
| 8438 | result = nsDisplayTransform::GetResultingTransformMatrix( |
| 8439 | this, nsPoint(), scaleFactor, |
| 8440 | nsDisplayTransform::INCLUDE_PERSPECTIVE); |
| 8441 | } |
| 8442 | |
| 8443 | // The offset from a zoomed content root to its parent (e.g. from |
| 8444 | // a canvas frame to a scroll frame) is in layout coordinates, so |
| 8445 | // apply it before applying any layout-to-visual transform. |
| 8446 | *aOutAncestor = GetParent(); |
| 8447 | nsPoint delta = GetPositionMaybeIgnoringScrolling(this); |
| 8448 | /* Combine the raw transform with a translation to our parent. */ |
| 8449 | result.PostTranslate(NSAppUnitsToFloatPixels(delta.x, scaleFactor), |
| 8450 | NSAppUnitsToFloatPixels(delta.y, scaleFactor), 0.0f); |
| 8451 | |
| 8452 | if (zoomedContentRoot) { |
| 8453 | Matrix4x4Flagged layoutToVisual; |
| 8454 | if (aFlags.contains(TransformMatrixFlag::InCSSUnits)) { |
| 8455 | layoutToVisual = ViewportUtils::GetVisualToLayoutTransform( |
| 8456 | zoomedContentRoot->GetContent()) |
| 8457 | .Inverse() |
| 8458 | .ToUnknownMatrix(); |
| 8459 | } else { |
| 8460 | layoutToVisual = |
| 8461 | ViewportUtils::GetVisualToLayoutTransform<LayoutDevicePixel>( |
| 8462 | zoomedContentRoot->GetContent()) |
| 8463 | .Inverse() |
| 8464 | .ToUnknownMatrix(); |
| 8465 | } |
| 8466 | result = result * layoutToVisual; |
| 8467 | } |
| 8468 | |
| 8469 | return result; |
| 8470 | } |
| 8471 | |
| 8472 | // We are not transformed, so the returned transform is just going to be a |
| 8473 | // translation up to whatever ancestor we decide to stop at. |
| 8474 | |
| 8475 | nsPoint crossdocOffset; |
| 8476 | *aOutAncestor = |
| 8477 | nsLayoutUtils::GetCrossDocParentFrameInProcess(this, &crossdocOffset); |
| 8478 | |
| 8479 | /* Otherwise, we're not transformed. In that case, we'll walk up the frame |
| 8480 | * tree until we either hit the root frame or something that may be |
| 8481 | * transformed. We'll then change coordinates into that frame, since we're |
| 8482 | * guaranteed that nothing in-between can be transformed. First, however, |
| 8483 | * we have to check to see if we have a parent. If not, we'll set the |
| 8484 | * outparam to null (indicating that there's nothing left) and will hand back |
| 8485 | * the identity matrix. |
| 8486 | */ |
| 8487 | if (!*aOutAncestor) { |
| 8488 | return Matrix4x4Flagged(); |
| 8489 | } |
| 8490 | |
| 8491 | /* Keep iterating while the frame can't possibly be transformed. */ |
| 8492 | const nsIFrame* current = this; |
| 8493 | auto shouldStopAt = [](const nsIFrame* aCurrent, RelativeTo& aStopAtAncestor, |
| 8494 | nsIFrame* aOutAncestor, TransformMatrixFlags aFlags) { |
| 8495 | return aOutAncestor->IsTransformed() || |
| 8496 | ((aStopAtAncestor.mViewportType == ViewportType::Visual) && |
| 8497 | ViewportUtils::IsZoomedContentRoot(aOutAncestor)) || |
| 8498 | (aFlags.contains( |
| 8499 | TransformMatrixFlag::StopAtStackingContextAndDisplayPort) && |
| 8500 | (aOutAncestor->IsStackingContext() || |
| 8501 | DisplayPortUtils::FrameHasDisplayPort(aOutAncestor, aCurrent))); |
| 8502 | }; |
| 8503 | |
| 8504 | // We run the GetOffsetToCrossDoc code here as an optimization, instead of |
| 8505 | // walking the parent chain here and then asking GetOffsetToCrossDoc to walk |
| 8506 | // the same parent chain and compute the offset. |
| 8507 | const int32_t finalAPD = PresContext()->AppUnitsPerDevPixel(); |
| 8508 | // offset accumulates the offset at finalAPD. |
| 8509 | nsPoint offset = GetPositionMaybeIgnoringScrolling(this); |
| 8510 | |
| 8511 | int32_t currAPD = (*aOutAncestor)->PresContext()->AppUnitsPerDevPixel(); |
| 8512 | // docOffset accumulates the current offset at currAPD, and then flushes to |
| 8513 | // offset at finalAPD when the APD changes or we finish. |
| 8514 | nsPoint docOffset = crossdocOffset; |
| 8515 | MOZ_ASSERT(crossdocOffset == nsPoint(0, 0) || !GetParent())do { static_assert( mozilla::detail::AssertionConditionType< decltype(crossdocOffset == nsPoint(0, 0) || !GetParent())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(crossdocOffset == nsPoint(0, 0) || !GetParent()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("crossdocOffset == nsPoint(0, 0) || !GetParent()" , "./../../../layout/generic/nsIFrame.cpp", 8515); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "crossdocOffset == nsPoint(0, 0) || !GetParent()" ")"); do { MOZ_CrashSequence(__null, 8515); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8516 | |
| 8517 | while (*aOutAncestor != aStopAtAncestor.mFrame && |
| 8518 | !shouldStopAt(current, aStopAtAncestor, *aOutAncestor, aFlags)) { |
| 8519 | docOffset += GetPositionMaybeIgnoringScrolling(*aOutAncestor); |
| 8520 | |
| 8521 | nsIFrame* parent = (*aOutAncestor)->GetParent(); |
| 8522 | if (!parent) { |
| 8523 | crossdocOffset.x = crossdocOffset.y = 0; |
| 8524 | parent = nsLayoutUtils::GetCrossDocParentFrameInProcess(*aOutAncestor, |
| 8525 | &crossdocOffset); |
| 8526 | |
| 8527 | int32_t newAPD = |
| 8528 | parent ? parent->PresContext()->AppUnitsPerDevPixel() : currAPD; |
| 8529 | if (!parent || newAPD != currAPD) { |
| 8530 | // Convert docOffset to finalAPD and add it to offset. |
| 8531 | offset += docOffset.ScaleToOtherAppUnits(currAPD, finalAPD); |
| 8532 | docOffset.x = docOffset.y = 0; |
| 8533 | } |
| 8534 | currAPD = newAPD; |
| 8535 | docOffset += crossdocOffset; |
| 8536 | |
| 8537 | if (!parent) { |
| 8538 | break; |
| 8539 | } |
| 8540 | } |
| 8541 | |
| 8542 | current = *aOutAncestor; |
| 8543 | *aOutAncestor = parent; |
| 8544 | } |
| 8545 | offset += docOffset.ScaleToOtherAppUnits(currAPD, finalAPD); |
| 8546 | |
| 8547 | NS_ASSERTION(*aOutAncestor, "Somehow ended up with a null ancestor...?")do { if (!(*aOutAncestor)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "Somehow ended up with a null ancestor...?", "*aOutAncestor" , "./../../../layout/generic/nsIFrame.cpp", 8547); MOZ_PretendNoReturn (); } } while (0); |
| 8548 | |
| 8549 | int32_t scaleFactor = aFlags.contains(TransformMatrixFlag::InCSSUnits) |
| 8550 | ? AppUnitsPerCSSPixel() |
| 8551 | : PresContext()->AppUnitsPerDevPixel(); |
| 8552 | return Matrix4x4Flagged::Translation2d( |
| 8553 | NSAppUnitsToFloatPixels(offset.x, scaleFactor), |
| 8554 | NSAppUnitsToFloatPixels(offset.y, scaleFactor)); |
| 8555 | } |
| 8556 | |
| 8557 | static void InvalidateRenderingObservers(nsIFrame* aDisplayRoot, |
| 8558 | nsIFrame* aFrame, |
| 8559 | bool aFrameChanged = true) { |
| 8560 | MOZ_ASSERT(aDisplayRoot == nsLayoutUtils::GetDisplayRootFrame(aFrame))do { static_assert( mozilla::detail::AssertionConditionType< decltype(aDisplayRoot == nsLayoutUtils::GetDisplayRootFrame(aFrame ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aDisplayRoot == nsLayoutUtils::GetDisplayRootFrame(aFrame )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aDisplayRoot == nsLayoutUtils::GetDisplayRootFrame(aFrame)" , "./../../../layout/generic/nsIFrame.cpp", 8560); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aDisplayRoot == nsLayoutUtils::GetDisplayRootFrame(aFrame)" ")"); do { MOZ_CrashSequence(__null, 8560); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8561 | SVGObserverUtils::InvalidateDirectRenderingObservers(aFrame); |
| 8562 | nsIFrame* parent = aFrame; |
| 8563 | while (parent != aDisplayRoot && |
| 8564 | (parent = nsLayoutUtils::GetCrossDocParentFrameInProcess(parent)) && |
| 8565 | !parent->HasAnyStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT)) { |
| 8566 | SVGObserverUtils::InvalidateDirectRenderingObservers(parent); |
| 8567 | } |
| 8568 | |
| 8569 | if (!aFrameChanged) { |
| 8570 | return; |
| 8571 | } |
| 8572 | |
| 8573 | aFrame->MarkNeedsDisplayItemRebuild(); |
| 8574 | } |
| 8575 | |
| 8576 | static void SchedulePaintInternal( |
| 8577 | nsIFrame* aDisplayRoot, nsIFrame* aFrame, |
| 8578 | nsIFrame::PaintType aType = nsIFrame::PAINT_DEFAULT) { |
| 8579 | MOZ_ASSERT(aDisplayRoot == nsLayoutUtils::GetDisplayRootFrame(aFrame))do { static_assert( mozilla::detail::AssertionConditionType< decltype(aDisplayRoot == nsLayoutUtils::GetDisplayRootFrame(aFrame ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aDisplayRoot == nsLayoutUtils::GetDisplayRootFrame(aFrame )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aDisplayRoot == nsLayoutUtils::GetDisplayRootFrame(aFrame)" , "./../../../layout/generic/nsIFrame.cpp", 8579); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aDisplayRoot == nsLayoutUtils::GetDisplayRootFrame(aFrame)" ")"); do { MOZ_CrashSequence(__null, 8579); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8580 | nsPresContext* pres = aDisplayRoot->PresContext()->GetRootPresContext(); |
| 8581 | |
| 8582 | // No need to schedule a paint for an external document since they aren't |
| 8583 | // painted directly. |
| 8584 | if (!pres || (pres->Document() && pres->Document()->IsResourceDoc())) { |
| 8585 | return; |
| 8586 | } |
| 8587 | if (!pres->GetContainerWeak()) { |
| 8588 | NS_WARNING("Shouldn't call SchedulePaint in a detached pres context")NS_DebugBreak(NS_DEBUG_WARNING, "Shouldn't call SchedulePaint in a detached pres context" , nullptr, "./../../../layout/generic/nsIFrame.cpp", 8588); |
| 8589 | return; |
| 8590 | } |
| 8591 | |
| 8592 | pres->PresShell()->SchedulePaint(); |
| 8593 | |
| 8594 | if (aType == nsIFrame::PAINT_DEFAULT) { |
| 8595 | aDisplayRoot->AddStateBits(NS_FRAME_UPDATE_LAYER_TREE); |
| 8596 | } |
| 8597 | } |
| 8598 | |
| 8599 | static void InvalidateFrameInternal(nsIFrame* aFrame, bool aHasDisplayItem, |
| 8600 | bool aRebuildDisplayItems) { |
| 8601 | if (aHasDisplayItem) { |
| 8602 | aFrame->AddStateBits(NS_FRAME_NEEDS_PAINT); |
| 8603 | } |
| 8604 | |
| 8605 | if (aRebuildDisplayItems) { |
| 8606 | aFrame->MarkNeedsDisplayItemRebuild(); |
| 8607 | } |
| 8608 | SVGObserverUtils::InvalidateDirectRenderingObservers(aFrame); |
| 8609 | bool needsSchedulePaint = false; |
| 8610 | if (nsLayoutUtils::IsPopup(aFrame)) { |
| 8611 | needsSchedulePaint = true; |
| 8612 | } else { |
| 8613 | nsIFrame* parent = nsLayoutUtils::GetCrossDocParentFrameInProcess(aFrame); |
| 8614 | while (parent && |
| 8615 | !parent->HasAnyStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT)) { |
| 8616 | if (aHasDisplayItem && !parent->HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 8617 | parent->AddStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT); |
| 8618 | } |
| 8619 | SVGObserverUtils::InvalidateDirectRenderingObservers(parent); |
| 8620 | |
| 8621 | // If we're inside a popup, then we need to make sure that we |
| 8622 | // call schedule paint so that the NS_FRAME_UPDATE_LAYER_TREE |
| 8623 | // flag gets added to the popup display root frame. |
| 8624 | if (nsLayoutUtils::IsPopup(parent)) { |
| 8625 | needsSchedulePaint = true; |
| 8626 | break; |
| 8627 | } |
| 8628 | parent = nsLayoutUtils::GetCrossDocParentFrameInProcess(parent); |
| 8629 | } |
| 8630 | if (!parent) { |
| 8631 | needsSchedulePaint = true; |
| 8632 | } |
| 8633 | } |
| 8634 | if (!aHasDisplayItem) { |
| 8635 | return; |
| 8636 | } |
| 8637 | if (needsSchedulePaint) { |
| 8638 | nsIFrame* displayRoot = nsLayoutUtils::GetDisplayRootFrame(aFrame); |
| 8639 | SchedulePaintInternal(displayRoot, aFrame); |
| 8640 | } |
| 8641 | if (aFrame->HasAnyStateBits(NS_FRAME_HAS_INVALID_RECT)) { |
| 8642 | aFrame->RemoveProperty(nsIFrame::InvalidationRect()); |
| 8643 | aFrame->RemoveStateBits(NS_FRAME_HAS_INVALID_RECT); |
| 8644 | } |
| 8645 | } |
| 8646 | |
| 8647 | void nsIFrame::InvalidateFrameSubtree(bool aRebuildDisplayItems /* = true */) { |
| 8648 | InvalidateFrame(0, aRebuildDisplayItems); |
| 8649 | |
| 8650 | if (HasAnyStateBits(NS_FRAME_ALL_DESCENDANTS_NEED_PAINT)) { |
| 8651 | return; |
| 8652 | } |
| 8653 | |
| 8654 | AddStateBits(NS_FRAME_ALL_DESCENDANTS_NEED_PAINT); |
| 8655 | |
| 8656 | for (const auto& childList : CrossDocChildLists()) { |
| 8657 | for (nsIFrame* child : childList.mList) { |
| 8658 | // Don't explicitly rebuild display items for our descendants, |
| 8659 | // since we should be marked and it implicitly includes all |
| 8660 | // descendants. |
| 8661 | child->InvalidateFrameSubtree(false); |
| 8662 | } |
| 8663 | } |
| 8664 | } |
| 8665 | |
| 8666 | void nsIFrame::ClearInvalidationStateBits() { |
| 8667 | if (HasAnyStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT)) { |
| 8668 | for (const auto& childList : CrossDocChildLists()) { |
| 8669 | for (nsIFrame* child : childList.mList) { |
| 8670 | child->ClearInvalidationStateBits(); |
| 8671 | } |
| 8672 | } |
| 8673 | } |
| 8674 | |
| 8675 | RemoveStateBits(NS_FRAME_NEEDS_PAINT | NS_FRAME_DESCENDANT_NEEDS_PAINT | |
| 8676 | NS_FRAME_ALL_DESCENDANTS_NEED_PAINT); |
| 8677 | } |
| 8678 | |
| 8679 | bool HasRetainedDataFor(const nsIFrame* aFrame, uint32_t aDisplayItemKey) { |
| 8680 | if (RefPtr<WebRenderUserData> data = |
| 8681 | GetWebRenderUserData<WebRenderFallbackData>(aFrame, |
| 8682 | aDisplayItemKey)) { |
| 8683 | return true; |
| 8684 | } |
| 8685 | |
| 8686 | return false; |
| 8687 | } |
| 8688 | |
| 8689 | void nsIFrame::InvalidateFrame(uint32_t aDisplayItemKey, |
| 8690 | bool aRebuildDisplayItems /* = true */) { |
| 8691 | bool hasDisplayItem = |
| 8692 | !aDisplayItemKey || HasRetainedDataFor(this, aDisplayItemKey); |
| 8693 | InvalidateFrameInternal(this, hasDisplayItem, aRebuildDisplayItems); |
| 8694 | } |
| 8695 | |
| 8696 | void nsIFrame::InvalidateFrameWithRect(const nsRect& aRect, |
| 8697 | uint32_t aDisplayItemKey, |
| 8698 | bool aRebuildDisplayItems /* = true */) { |
| 8699 | if (aRect.IsEmpty()) { |
| 8700 | return; |
| 8701 | } |
| 8702 | bool hasDisplayItem = |
| 8703 | !aDisplayItemKey || HasRetainedDataFor(this, aDisplayItemKey); |
| 8704 | bool alreadyInvalid = false; |
| 8705 | if (!HasAnyStateBits(NS_FRAME_NEEDS_PAINT)) { |
| 8706 | InvalidateFrameInternal(this, hasDisplayItem, aRebuildDisplayItems); |
| 8707 | } else { |
| 8708 | alreadyInvalid = true; |
| 8709 | } |
| 8710 | |
| 8711 | if (!hasDisplayItem) { |
| 8712 | return; |
| 8713 | } |
| 8714 | |
| 8715 | nsRect* rect; |
| 8716 | if (HasAnyStateBits(NS_FRAME_HAS_INVALID_RECT)) { |
| 8717 | rect = GetProperty(InvalidationRect()); |
| 8718 | MOZ_ASSERT(rect)do { static_assert( mozilla::detail::AssertionConditionType< decltype(rect)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(rect))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("rect", "./../../../layout/generic/nsIFrame.cpp" , 8718); AnnotateMozCrashReason("MOZ_ASSERT" "(" "rect" ")"); do { MOZ_CrashSequence(__null, 8718); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8719 | } else { |
| 8720 | if (alreadyInvalid) { |
| 8721 | return; |
| 8722 | } |
| 8723 | rect = new nsRect(); |
| 8724 | AddProperty(InvalidationRect(), rect); |
| 8725 | AddStateBits(NS_FRAME_HAS_INVALID_RECT); |
| 8726 | } |
| 8727 | |
| 8728 | *rect = rect->Union(aRect); |
| 8729 | } |
| 8730 | |
| 8731 | bool nsIFrame::IsInvalid(nsRect& aRect) { |
| 8732 | if (!HasAnyStateBits(NS_FRAME_NEEDS_PAINT)) { |
| 8733 | return false; |
| 8734 | } |
| 8735 | |
| 8736 | if (HasAnyStateBits(NS_FRAME_HAS_INVALID_RECT)) { |
| 8737 | nsRect* rect = GetProperty(InvalidationRect()); |
| 8738 | NS_ASSERTION(do { if (!(rect)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Must have an invalid rect if NS_FRAME_HAS_INVALID_RECT is set!" , "rect", "./../../../layout/generic/nsIFrame.cpp", 8739); MOZ_PretendNoReturn (); } } while (0) |
| 8739 | rect, "Must have an invalid rect if NS_FRAME_HAS_INVALID_RECT is set!")do { if (!(rect)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Must have an invalid rect if NS_FRAME_HAS_INVALID_RECT is set!" , "rect", "./../../../layout/generic/nsIFrame.cpp", 8739); MOZ_PretendNoReturn (); } } while (0); |
| 8740 | aRect = *rect; |
| 8741 | } else { |
| 8742 | aRect.SetEmpty(); |
| 8743 | } |
| 8744 | return true; |
| 8745 | } |
| 8746 | |
| 8747 | void nsIFrame::SchedulePaint(PaintType aType, bool aFrameChanged) { |
| 8748 | if (PresShell()->IsPaintingSuppressed()) { |
| 8749 | // We can't have any display items yet, and when we unsuppress we will |
| 8750 | // invalidate the root frame. |
| 8751 | return; |
| 8752 | } |
| 8753 | nsIFrame* displayRoot = nsLayoutUtils::GetDisplayRootFrame(this); |
| 8754 | InvalidateRenderingObservers(displayRoot, this, aFrameChanged); |
| 8755 | SchedulePaintInternal(displayRoot, this, aType); |
| 8756 | } |
| 8757 | |
| 8758 | void nsIFrame::SchedulePaintWithoutInvalidatingObservers(PaintType aType) { |
| 8759 | nsIFrame* displayRoot = nsLayoutUtils::GetDisplayRootFrame(this); |
| 8760 | SchedulePaintInternal(displayRoot, this, aType); |
| 8761 | } |
| 8762 | |
| 8763 | void nsIFrame::InvalidateLayer(DisplayItemType aDisplayItemKey, |
| 8764 | const nsIntRect* aDamageRect, |
| 8765 | const nsRect* aFrameDamageRect, |
| 8766 | uint32_t aFlags /* = 0 */) { |
| 8767 | NS_ASSERTION(aDisplayItemKey > DisplayItemType::TYPE_ZERO, "Need a key")do { if (!(aDisplayItemKey > DisplayItemType::TYPE_ZERO)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Need a key", "aDisplayItemKey > DisplayItemType::TYPE_ZERO" , "./../../../layout/generic/nsIFrame.cpp", 8767); MOZ_PretendNoReturn (); } } while (0); |
| 8768 | |
| 8769 | nsIFrame* displayRoot = nsLayoutUtils::GetDisplayRootFrame(this); |
| 8770 | InvalidateRenderingObservers(displayRoot, this, false); |
| 8771 | |
| 8772 | // Check if frame supports WebRender's async update |
| 8773 | if ((aFlags & UPDATE_IS_ASYNC) && |
| 8774 | WebRenderUserData::SupportsAsyncUpdate(this)) { |
| 8775 | // WebRender does not use layer, then return nullptr. |
| 8776 | return; |
| 8777 | } |
| 8778 | |
| 8779 | if (aFrameDamageRect && aFrameDamageRect->IsEmpty()) { |
| 8780 | return; |
| 8781 | } |
| 8782 | |
| 8783 | // In the bug 930056, dialer app startup but not shown on the |
| 8784 | // screen because sometimes we don't have any retainned data |
| 8785 | // for remote type displayitem and thus Repaint event is not |
| 8786 | // triggered. So, always invalidate in this case. |
| 8787 | DisplayItemType displayItemKey = aDisplayItemKey; |
| 8788 | if (aDisplayItemKey == DisplayItemType::TYPE_REMOTE) { |
| 8789 | displayItemKey = DisplayItemType::TYPE_ZERO; |
| 8790 | } |
| 8791 | |
| 8792 | if (aFrameDamageRect) { |
| 8793 | InvalidateFrameWithRect(*aFrameDamageRect, |
| 8794 | static_cast<uint32_t>(displayItemKey)); |
| 8795 | } else { |
| 8796 | InvalidateFrame(static_cast<uint32_t>(displayItemKey)); |
| 8797 | } |
| 8798 | } |
| 8799 | |
| 8800 | static nsRect ComputeEffectsRect(nsIFrame* aFrame, const nsRect& aOverflowRect, |
| 8801 | const nsSize& aNewSize) { |
| 8802 | nsRect r = aOverflowRect; |
| 8803 | |
| 8804 | if (aFrame->HasAnyStateBits(NS_FRAME_SVG_LAYOUT)) { |
| 8805 | // For SVG frames, we only need to account for filters. |
| 8806 | // TODO: We could also take account of clipPath and mask to reduce the |
| 8807 | // ink overflow, but that's not essential. |
| 8808 | if (aFrame->StyleEffects()->HasFilters()) { |
| 8809 | aFrame->SetOrUpdateDeletableProperty(nsIFrame::PreEffectsBBoxProperty(), |
| 8810 | r); |
| 8811 | r = SVGUtils::GetPostFilterInkOverflowRect(aFrame, aOverflowRect); |
| 8812 | } |
| 8813 | return r; |
| 8814 | } |
| 8815 | |
| 8816 | // box-shadow |
| 8817 | r.UnionRect(r, nsLayoutUtils::GetBoxShadowRectForFrame(aFrame, aNewSize)); |
| 8818 | |
| 8819 | // border-image-outset. |
| 8820 | // We need to include border-image-outset because it can cause the |
| 8821 | // border image to be drawn beyond the border box. |
| 8822 | |
| 8823 | // (1) It's important we not check whether there's a border-image |
| 8824 | // since the style hint for a change in border image doesn't cause |
| 8825 | // reflow, and that's probably more important than optimizing the |
| 8826 | // overflow areas for the silly case of border-image-outset without |
| 8827 | // border-image |
| 8828 | // (2) It's important that we not check whether the border-image |
| 8829 | // is actually loaded, since that would require us to reflow when |
| 8830 | // the image loads. |
| 8831 | const nsStyleBorder* styleBorder = aFrame->StyleBorder(); |
| 8832 | nsMargin outsetMargin = styleBorder->GetImageOutset(); |
| 8833 | |
| 8834 | if (outsetMargin != nsMargin(0, 0, 0, 0)) { |
| 8835 | nsRect outsetRect(nsPoint(0, 0), aNewSize); |
| 8836 | outsetRect.Inflate(outsetMargin); |
| 8837 | r.UnionRect(r, outsetRect); |
| 8838 | } |
| 8839 | |
| 8840 | // Note that we don't remove the outlineInnerRect if a frame loses outline |
| 8841 | // style. That would require an extra property lookup for every frame, |
| 8842 | // or a new frame state bit to track whether a property had been stored, |
| 8843 | // or something like that. It's not worth doing that here. At most it's |
| 8844 | // only one heap-allocated rect per frame and it will be cleaned up when |
| 8845 | // the frame dies. |
| 8846 | |
| 8847 | if (SVGIntegrationUtils::UsingOverflowAffectingEffects(aFrame)) { |
| 8848 | aFrame->SetOrUpdateDeletableProperty(nsIFrame::PreEffectsBBoxProperty(), r); |
| 8849 | r = SVGIntegrationUtils::ComputePostEffectsInkOverflowRect(aFrame, r); |
| 8850 | } |
| 8851 | |
| 8852 | return r; |
| 8853 | } |
| 8854 | |
| 8855 | void nsIFrame::SetPosition(const nsPoint& aPt) { |
| 8856 | if (mRect.TopLeft() == aPt) { |
| 8857 | return; |
| 8858 | } |
| 8859 | mRect.MoveTo(aPt); |
| 8860 | MarkNeedsDisplayItemRebuild(); |
| 8861 | } |
| 8862 | |
| 8863 | void nsIFrame::MovePositionBy(const nsPoint& aTranslation) { |
| 8864 | nsPoint position = GetNormalPosition() + aTranslation; |
| 8865 | |
| 8866 | const nsMargin* computedOffsets = nullptr; |
| 8867 | if (IsRelativelyOrStickyPositioned()) { |
| 8868 | computedOffsets = GetProperty(nsIFrame::ComputedOffsetProperty()); |
| 8869 | } |
| 8870 | ReflowInput::ApplyRelativePositioning( |
| 8871 | this, computedOffsets ? *computedOffsets : nsMargin(), &position); |
| 8872 | SetPosition(position); |
| 8873 | } |
| 8874 | |
| 8875 | nsRect nsIFrame::GetNormalRect() const { |
| 8876 | return nsRect(GetNormalPosition(), GetSize()); |
| 8877 | } |
| 8878 | |
| 8879 | nsRect nsIFrame::GetBoundingClientRect() { |
| 8880 | return nsLayoutUtils::GetAllInFlowRectsUnion( |
| 8881 | this, nsLayoutUtils::GetContainingBlockForClientRect(this), |
| 8882 | nsLayoutUtils::GetAllInFlowRectsFlag::AccountForTransforms); |
| 8883 | } |
| 8884 | |
| 8885 | nsPoint nsIFrame::GetPositionIgnoringScrolling() const { |
| 8886 | return GetParent() ? GetParent()->GetPositionOfChildIgnoringScrolling(this) |
| 8887 | : GetPosition(); |
| 8888 | } |
| 8889 | |
| 8890 | nsPoint nsIFrame::GetPositionIgnoringScrollingAndSticky() const { |
| 8891 | if (IsStickyPositioned()) { |
| 8892 | if (const auto* ssc = StickyScrollContainer::GetForFrame(this)) { |
| 8893 | return GetNormalPosition() + |
| 8894 | ssc->ComputeTranslationIgnoringScrolling(this); |
| 8895 | } |
| 8896 | } |
| 8897 | return GetPositionIgnoringScrolling(); |
| 8898 | } |
| 8899 | |
| 8900 | nsRect nsIFrame::GetOverflowRect(OverflowType aType) const { |
| 8901 | // Note that in some cases the overflow area might not have been |
| 8902 | // updated (yet) to reflect any outline set on the frame or the area |
| 8903 | // of child frames. That's OK because any reflow that updates these |
| 8904 | // areas will invalidate the appropriate area, so any (mis)uses of |
| 8905 | // this method will be fixed up. |
| 8906 | |
| 8907 | if (mOverflow.mType == OverflowStorageType::Large) { |
| 8908 | // there is an overflow rect, and it's not stored as deltas but as |
| 8909 | // a separately-allocated rect |
| 8910 | return GetOverflowAreasProperty()->Overflow(aType); |
| 8911 | } |
| 8912 | |
| 8913 | if (aType == OverflowType::Ink && |
| 8914 | mOverflow.mType != OverflowStorageType::None) { |
| 8915 | return InkOverflowFromDeltas(); |
| 8916 | } |
| 8917 | |
| 8918 | return GetRectRelativeToSelf(); |
| 8919 | } |
| 8920 | |
| 8921 | OverflowAreas nsIFrame::GetOverflowAreas() const { |
| 8922 | if (mOverflow.mType == OverflowStorageType::Large) { |
| 8923 | // there is an overflow rect, and it's not stored as deltas but as |
| 8924 | // a separately-allocated rect |
| 8925 | return *GetOverflowAreasProperty(); |
| 8926 | } |
| 8927 | |
| 8928 | return OverflowAreas(InkOverflowFromDeltas(), |
| 8929 | nsRect(nsPoint(0, 0), GetSize())); |
| 8930 | } |
| 8931 | |
| 8932 | OverflowAreas nsIFrame::GetOverflowAreasRelativeToSelf() const { |
| 8933 | if (IsTransformed()) { |
| 8934 | if (OverflowAreas* preTransformOverflows = |
| 8935 | GetProperty(PreTransformOverflowAreasProperty())) { |
| 8936 | return *preTransformOverflows; |
| 8937 | } |
| 8938 | } |
| 8939 | return GetOverflowAreas(); |
| 8940 | } |
| 8941 | |
| 8942 | OverflowAreas nsIFrame::GetOverflowAreasRelativeToParent() const { |
| 8943 | return GetOverflowAreas() + GetPosition(); |
| 8944 | } |
| 8945 | |
| 8946 | OverflowAreas nsIFrame::GetActualAndNormalOverflowAreasRelativeToParent() |
| 8947 | const { |
| 8948 | if (MOZ_UNLIKELY(IsAbsolutelyPositioned())(__builtin_expect(!!(IsAbsolutelyPositioned()), 0))) { |
| 8949 | const auto* referenceData = GetProperty(AnchorPosReferences()); |
| 8950 | if (!referenceData || !referenceData->mRememberedScrollOffset || |
| 8951 | referenceData->mDefaultScrollShift == nsPoint()) { |
| 8952 | return GetOverflowAreasRelativeToParent(); |
| 8953 | } |
| 8954 | // Including the default scroll shift in the scrollable overflow would |
| 8955 | // change the scroll range that produced it. So, like sticky positioned |
| 8956 | // frames below, use the position without the default scroll shift for both |
| 8957 | // overflow areas, and add the current position only to the ink overflow, |
| 8958 | // which is where we paint. |
| 8959 | // |
| 8960 | // Per spec, "after layout has been performed for abspos, it is additionally |
| 8961 | // shifted by the default scroll shift, as if affected by a transform". We |
| 8962 | // store the shifts the other way around. UpdateScrollShift() moves the |
| 8963 | // frame by subtracting the scroll shift from the frame's current position, |
| 8964 | // and stores it back, so GetPosition() is the final position with the |
| 8965 | // default scroll shift applied. To get the unshifted position, we undo the |
| 8966 | // default scroll shift by adding it back. |
| 8967 | // https://drafts.csswg.org/css-anchor-position-1/#default-scroll-shift |
| 8968 | const nsPoint unshiftedPosition = |
| 8969 | GetPosition() + referenceData->mDefaultScrollShift; |
| 8970 | const OverflowAreas overflows = GetOverflowAreas(); |
| 8971 | OverflowAreas result(overflows.InkOverflow() + GetPosition(), nsRect()); |
| 8972 | result.UnionWith(overflows + unshiftedPosition); |
| 8973 | return result; |
| 8974 | } |
| 8975 | |
| 8976 | if (MOZ_LIKELY(!IsRelativelyOrStickyPositioned())(__builtin_expect(!!(!IsRelativelyOrStickyPositioned()), 1))) { |
| 8977 | return GetOverflowAreasRelativeToParent(); |
| 8978 | } |
| 8979 | |
| 8980 | const OverflowAreas overflows = GetOverflowAreas(); |
| 8981 | OverflowAreas actualAndNormalOverflows = overflows + GetNormalPosition(); |
| 8982 | if (IsRelativelyPositioned()) { |
| 8983 | actualAndNormalOverflows.UnionWith(overflows + GetPosition()); |
| 8984 | } else { |
| 8985 | // For sticky positioned elements, we only use the normal position for the |
| 8986 | // scrollable overflow. This avoids circular dependencies between sticky |
| 8987 | // positioned elements and their scroll container. (The scroll position and |
| 8988 | // the scroll container's size impact the sticky position, so we don't want |
| 8989 | // the sticky position to impact them.) |
| 8990 | MOZ_ASSERT(IsStickyPositioned())do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsStickyPositioned())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(IsStickyPositioned()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("IsStickyPositioned()" , "./../../../layout/generic/nsIFrame.cpp", 8990); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "IsStickyPositioned()" ")"); do { MOZ_CrashSequence (__null, 8990); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 8991 | actualAndNormalOverflows.UnionWith( |
| 8992 | OverflowAreas(overflows.InkOverflow() + GetPosition(), nsRect())); |
| 8993 | } |
| 8994 | return actualAndNormalOverflows; |
| 8995 | } |
| 8996 | |
| 8997 | nsRect nsIFrame::ScrollableOverflowRectRelativeToParent() const { |
| 8998 | return ScrollableOverflowRect() + GetPosition(); |
| 8999 | } |
| 9000 | |
| 9001 | nsRect nsIFrame::InkOverflowRectRelativeToParent() const { |
| 9002 | return InkOverflowRect() + GetPosition(); |
| 9003 | } |
| 9004 | |
| 9005 | nsRect nsIFrame::ScrollableOverflowRectRelativeToSelf() const { |
| 9006 | if (IsTransformed()) { |
| 9007 | if (OverflowAreas* preTransformOverflows = |
| 9008 | GetProperty(PreTransformOverflowAreasProperty())) { |
| 9009 | return preTransformOverflows->ScrollableOverflow(); |
| 9010 | } |
| 9011 | } |
| 9012 | return ScrollableOverflowRect(); |
| 9013 | } |
| 9014 | |
| 9015 | nsRect nsIFrame::InkOverflowRectRelativeToSelf() const { |
| 9016 | if (IsTransformed()) { |
| 9017 | if (OverflowAreas* preTransformOverflows = |
| 9018 | GetProperty(PreTransformOverflowAreasProperty())) { |
| 9019 | return preTransformOverflows->InkOverflow(); |
| 9020 | } |
| 9021 | } |
| 9022 | return InkOverflowRect(); |
| 9023 | } |
| 9024 | |
| 9025 | nsRect nsIFrame::PreEffectsInkOverflowRect() const { |
| 9026 | nsRect* r = GetProperty(nsIFrame::PreEffectsBBoxProperty()); |
| 9027 | return r ? *r : InkOverflowRectRelativeToSelf(); |
| 9028 | } |
| 9029 | |
| 9030 | bool nsIFrame::UpdateOverflow() { |
| 9031 | MOZ_ASSERT(FrameMaintainsOverflow(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(FrameMaintainsOverflow())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(FrameMaintainsOverflow()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("FrameMaintainsOverflow()" " (" "Non-display SVG do not maintain ink overflow rects" ")" , "./../../../layout/generic/nsIFrame.cpp", 9032); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "FrameMaintainsOverflow()" ") (" "Non-display SVG do not maintain ink overflow rects" ")"); do { MOZ_CrashSequence(__null, 9032); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 9032 | "Non-display SVG do not maintain ink overflow rects")do { static_assert( mozilla::detail::AssertionConditionType< decltype(FrameMaintainsOverflow())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(FrameMaintainsOverflow()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("FrameMaintainsOverflow()" " (" "Non-display SVG do not maintain ink overflow rects" ")" , "./../../../layout/generic/nsIFrame.cpp", 9032); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "FrameMaintainsOverflow()" ") (" "Non-display SVG do not maintain ink overflow rects" ")"); do { MOZ_CrashSequence(__null, 9032); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9033 | |
| 9034 | nsRect rect(nsPoint(0, 0), GetSize()); |
| 9035 | OverflowAreas overflowAreas(rect, rect); |
| 9036 | |
| 9037 | if (!ComputeCustomOverflow(overflowAreas)) { |
| 9038 | // If updating overflow wasn't supported by this frame, then it should |
| 9039 | // have scheduled any necessary reflows. We can return false to say nothing |
| 9040 | // changed, and wait for reflow to correct it. |
| 9041 | return false; |
| 9042 | } |
| 9043 | |
| 9044 | UnionChildOverflow(overflowAreas); |
| 9045 | |
| 9046 | if (FinishAndStoreOverflow(overflowAreas, GetSize())) { |
| 9047 | return true; |
| 9048 | } |
| 9049 | |
| 9050 | // Frames that combine their 3d transform with their ancestors |
| 9051 | // only compute a pre-transform overflow rect, and then contribute |
| 9052 | // to the normal overflow rect of the preserve-3d root. Always return |
| 9053 | // true here so that we propagate changes up to the root for final |
| 9054 | // calculation. |
| 9055 | return Combines3DTransformWithAncestors(); |
| 9056 | } |
| 9057 | |
| 9058 | /* virtual */ |
| 9059 | bool nsIFrame::ComputeCustomOverflow(OverflowAreas& aOverflowAreas) { |
| 9060 | return true; |
| 9061 | } |
| 9062 | |
| 9063 | bool nsIFrame::DoesClipChildrenInBothAxes() const { |
| 9064 | if (IsScrollContainerOrSubclass()) { |
| 9065 | return true; |
| 9066 | } |
| 9067 | const nsStyleDisplay* display = StyleDisplay(); |
| 9068 | if (display->IsContainPaint() && SupportsContainLayoutAndPaint()) { |
| 9069 | return true; |
| 9070 | } |
| 9071 | return display->mOverflowX == StyleOverflow::Clip && |
| 9072 | display->mOverflowY == StyleOverflow::Clip; |
| 9073 | } |
| 9074 | |
| 9075 | /* virtual */ |
| 9076 | void nsIFrame::UnionChildOverflow(OverflowAreas& aOverflowAreas, |
| 9077 | bool aAsIfScrolled) { |
| 9078 | if (aAsIfScrolled || !DoesClipChildrenInBothAxes()) { |
| 9079 | nsLayoutUtils::UnionChildOverflow(this, aOverflowAreas); |
| 9080 | } |
| 9081 | } |
| 9082 | |
| 9083 | // Return true if this form control element's preferred size property (but not |
| 9084 | // percentage max size property) contains a percentage value that should be |
| 9085 | // resolved against zero when calculating its min-content contribution in the |
| 9086 | // corresponding axis. |
| 9087 | // |
| 9088 | // For proper replaced elements, the percentage value in both their max size |
| 9089 | // property or preferred size property should be resolved against zero. This is |
| 9090 | // handled in IsPercentageResolvedAgainstZero(). |
| 9091 | inline static bool FormControlShrinksForPercentSize(const nsIFrame* aFrame) { |
| 9092 | if (!aFrame->IsReplaced()) { |
| 9093 | // Quick test to reject most frames. |
| 9094 | return false; |
| 9095 | } |
| 9096 | |
| 9097 | switch (aFrame->Type()) { |
| 9098 | case LayoutFrameType::Progress: |
| 9099 | case LayoutFrameType::Range: |
| 9100 | case LayoutFrameType::TextInput: |
| 9101 | case LayoutFrameType::ColorControl: |
| 9102 | case LayoutFrameType::ComboboxControl: |
| 9103 | case LayoutFrameType::ListControl: |
| 9104 | case LayoutFrameType::CheckboxRadio: |
| 9105 | case LayoutFrameType::FileControl: |
| 9106 | case LayoutFrameType::ImageControl: |
| 9107 | return true; |
| 9108 | default: |
| 9109 | // True buttons (<button>, backed by block/grid/flex frame) and most |
| 9110 | // button-flavored <inputs> (those backed by InputButtonControlFrame) |
| 9111 | // don't have this shrinking behavior. But color-inputs and comboboxes do; |
| 9112 | // and both of those derive from ButtonControlFrame. So: we can't easily |
| 9113 | // use do_QueryFrame to differentiate the buttons-that-do vs. the |
| 9114 | // buttons-that-don't. So we explicitly list the buttons-that-do by |
| 9115 | // LayoutFrameType above, and the others fall into this catch-all. |
| 9116 | return false; |
| 9117 | } |
| 9118 | } |
| 9119 | |
| 9120 | bool nsIFrame::IsPercentageResolvedAgainstZero( |
| 9121 | const StyleSize& aStyleSize, const StyleMaxSize& aStyleMaxSize) const { |
| 9122 | const bool sizeHasPercent = aStyleSize.HasPercent(); |
| 9123 | return ((sizeHasPercent || aStyleMaxSize.HasPercent()) && |
| 9124 | HasReplacedSizing()) || |
| 9125 | (sizeHasPercent && FormControlShrinksForPercentSize(this)); |
| 9126 | } |
| 9127 | |
| 9128 | // Summary of the Cyclic-Percentage Intrinsic Size Contribution Rules: |
| 9129 | // |
| 9130 | // Element Type | Replaced | Non-replaced |
| 9131 | // Contribution Type | min-content max-content | min-content max-content |
| 9132 | // --------------------------------------------------------------------------- |
| 9133 | // min size | zero zero | zero zero |
| 9134 | // max & preferred size | zero initial | initial initial |
| 9135 | // |
| 9136 | // https://drafts.csswg.org/css-sizing-3/#cyclic-percentage-contribution |
| 9137 | bool nsIFrame::IsPercentageResolvedAgainstZero(const LengthPercentage& aSize, |
| 9138 | SizeProperty aProperty) const { |
| 9139 | // Early return to avoid calling the virtual function, IsFrameOfType(). |
| 9140 | if (aProperty == SizeProperty::MinSize) { |
| 9141 | return true; |
| 9142 | } |
| 9143 | |
| 9144 | const bool hasPercentOnReplaced = aSize.HasPercent() && HasReplacedSizing(); |
| 9145 | if (aProperty == SizeProperty::MaxSize) { |
| 9146 | return hasPercentOnReplaced; |
| 9147 | } |
| 9148 | |
| 9149 | MOZ_ASSERT(aProperty == SizeProperty::Size)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aProperty == SizeProperty::Size)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aProperty == SizeProperty::Size ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "aProperty == SizeProperty::Size", "./../../../layout/generic/nsIFrame.cpp" , 9149); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aProperty == SizeProperty::Size" ")"); do { MOZ_CrashSequence(__null, 9149); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9150 | return hasPercentOnReplaced || |
| 9151 | (aSize.HasPercent() && FormControlShrinksForPercentSize(this)); |
| 9152 | } |
| 9153 | |
| 9154 | bool nsIFrame::IsBlockWrapper() const { |
| 9155 | auto pseudoType = Style()->GetPseudoType(); |
| 9156 | return pseudoType == PseudoStyleType::MozBlockInsideInlineWrapper || |
| 9157 | pseudoType == PseudoStyleType::MozCellContent || |
| 9158 | pseudoType == PseudoStyleType::MozColumnSpanWrapper; |
| 9159 | } |
| 9160 | |
| 9161 | bool nsIFrame::IsBlockFrameOrSubclass() const { |
| 9162 | const nsBlockFrame* thisAsBlock = do_QueryFrame(this); |
| 9163 | return !!thisAsBlock; |
| 9164 | } |
| 9165 | |
| 9166 | bool nsIFrame::IsInlineFrameOrSubclass() const { |
| 9167 | const nsInlineFrame* asInline = do_QueryFrame(this); |
| 9168 | return !!asInline; |
| 9169 | } |
| 9170 | |
| 9171 | bool nsIFrame::IsImageFrameOrSubclass() const { |
| 9172 | const nsImageFrame* asImage = do_QueryFrame(this); |
| 9173 | return !!asImage; |
| 9174 | } |
| 9175 | |
| 9176 | // Unlike its neighbours this must not use do_QueryFrame(), because |
| 9177 | // IMPL_FAST_QUERYFRAME routes do_QueryFrame<ScrollContainerFrame> through here. |
| 9178 | bool nsIFrame::IsScrollContainerOrSubclass() const { |
| 9179 | const bool result = |
| 9180 | IsScrollContainerFrame() || IsListControlFrame() || IsTextInputFrame(); |
| 9181 | MOZ_ASSERT(result == !!QueryFrame(ScrollContainerFrame::kFrameIID))do { static_assert( mozilla::detail::AssertionConditionType< decltype(result == !!QueryFrame(ScrollContainerFrame::kFrameIID ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(result == !!QueryFrame(ScrollContainerFrame::kFrameIID )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("result == !!QueryFrame(ScrollContainerFrame::kFrameIID)", "./../../../layout/generic/nsIFrame.cpp" , 9181); AnnotateMozCrashReason("MOZ_ASSERT" "(" "result == !!QueryFrame(ScrollContainerFrame::kFrameIID)" ")"); do { MOZ_CrashSequence(__null, 9181); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9182 | return result; |
| 9183 | } |
| 9184 | |
| 9185 | bool nsIFrame::IsSubgrid() const { |
| 9186 | return IsGridContainerFrame() && |
| 9187 | static_cast<const nsGridContainerFrame*>(this)->IsSubgrid(); |
| 9188 | } |
| 9189 | |
| 9190 | static nsIFrame* GetNearestBlockContainer(nsIFrame* frame) { |
| 9191 | while (!frame->IsBlockContainer()) { |
| 9192 | frame = frame->GetParent(); |
| 9193 | NS_ASSERTION(do { if (!(frame)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "How come we got to the root frame without seeing a containing block?" , "frame", "./../../../layout/generic/nsIFrame.cpp", 9195); MOZ_PretendNoReturn (); } } while (0) |
| 9194 | frame,do { if (!(frame)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "How come we got to the root frame without seeing a containing block?" , "frame", "./../../../layout/generic/nsIFrame.cpp", 9195); MOZ_PretendNoReturn (); } } while (0) |
| 9195 | "How come we got to the root frame without seeing a containing block?")do { if (!(frame)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "How come we got to the root frame without seeing a containing block?" , "frame", "./../../../layout/generic/nsIFrame.cpp", 9195); MOZ_PretendNoReturn (); } } while (0); |
| 9196 | } |
| 9197 | return frame; |
| 9198 | } |
| 9199 | |
| 9200 | bool nsIFrame::IsBlockContainer() const { |
| 9201 | // The block wrappers we use to wrap blocks inside inlines aren't |
| 9202 | // described in the CSS spec. We need to make them not be containing |
| 9203 | // blocks. |
| 9204 | // Since the parent of such a block is either a normal block or |
| 9205 | // another such pseudo, this shouldn't cause anything bad to happen. |
| 9206 | // Also the anonymous blocks inside table cells are not containing blocks. |
| 9207 | // |
| 9208 | // If we ever start skipping table row groups from being containing blocks, |
| 9209 | // you need to remove the StickyScrollContainer hack referencing bug 1421660. |
| 9210 | // Table rows are not containing blocks either |
| 9211 | return !IsLineParticipant() && !IsBlockWrapper() && !IsTableRowFrame(); |
| 9212 | } |
| 9213 | |
| 9214 | nsIFrame* nsIFrame::GetContainingBlock( |
| 9215 | uint32_t aFlags, const nsStyleDisplay* aStyleDisplay) const { |
| 9216 | MOZ_ASSERT(aStyleDisplay == StyleDisplay())do { static_assert( mozilla::detail::AssertionConditionType< decltype(aStyleDisplay == StyleDisplay())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aStyleDisplay == StyleDisplay ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aStyleDisplay == StyleDisplay()", "./../../../layout/generic/nsIFrame.cpp" , 9216); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aStyleDisplay == StyleDisplay()" ")"); do { MOZ_CrashSequence(__null, 9216); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9217 | |
| 9218 | // Keep this in sync with MightBeContainingBlockFor in ReflowInput.cpp. |
| 9219 | |
| 9220 | if (!GetParent()) { |
| 9221 | return nullptr; |
| 9222 | } |
| 9223 | // MathML frames might have absolute positioning style, but they would |
| 9224 | // still be in-flow. So we have to check to make sure that the frame |
| 9225 | // is really out-of-flow too. |
| 9226 | nsIFrame* f; |
| 9227 | if (IsAbsolutelyPositioned(aStyleDisplay)) { |
| 9228 | f = GetParent(); // the parent is always the containing block |
| 9229 | } else { |
| 9230 | f = GetNearestBlockContainer(GetParent()); |
| 9231 | } |
| 9232 | |
| 9233 | if (aFlags & SKIP_SCROLLED_FRAME && f && |
| 9234 | f->Style()->GetPseudoType() == PseudoStyleType::MozScrolledContent) { |
| 9235 | f = f->GetParent(); |
| 9236 | } |
| 9237 | return f; |
| 9238 | } |
| 9239 | |
| 9240 | #ifdef DEBUG_FRAME_DUMP1 |
| 9241 | |
| 9242 | Maybe<uint32_t> nsIFrame::ContentIndexInContainer(const nsIFrame* aFrame) { |
| 9243 | if (nsIContent* content = aFrame->GetContent()) { |
| 9244 | return content->ComputeIndexInParentContent(); |
| 9245 | } |
| 9246 | return Nothing(); |
| 9247 | } |
| 9248 | |
| 9249 | nsAutoCString nsIFrame::ListTag(bool aListOnlyDeterministic) const { |
| 9250 | nsAutoString tmp; |
| 9251 | GetFrameName(tmp); |
| 9252 | |
| 9253 | nsAutoCString tag; |
| 9254 | tag += NS_ConvertUTF16toUTF8(tmp); |
| 9255 | ListPtr(tag, aListOnlyDeterministic, this, "@"); |
| 9256 | return tag; |
| 9257 | } |
| 9258 | |
| 9259 | std::string nsIFrame::ConvertToString(const LogicalRect& aRect, |
| 9260 | const WritingMode aWM, ListFlags aFlags) { |
| 9261 | if (aFlags.contains(ListFlag::DisplayInCSSPixels)) { |
| 9262 | // Abuse CSSRect to store all LogicalRect's dimensions in CSS pixels. |
| 9263 | return ToString(mozilla::CSSRect(CSSPixel::FromAppUnits(aRect.IStart(aWM)), |
| 9264 | CSSPixel::FromAppUnits(aRect.BStart(aWM)), |
| 9265 | CSSPixel::FromAppUnits(aRect.ISize(aWM)), |
| 9266 | CSSPixel::FromAppUnits(aRect.BSize(aWM)))); |
| 9267 | } |
| 9268 | return ToString(aRect); |
| 9269 | } |
| 9270 | |
| 9271 | std::string nsIFrame::ConvertToString(const LogicalSize& aSize, |
| 9272 | const WritingMode aWM, ListFlags aFlags) { |
| 9273 | if (aFlags.contains(ListFlag::DisplayInCSSPixels)) { |
| 9274 | // Abuse CSSSize to store all LogicalSize's dimensions in CSS pixels. |
| 9275 | return ToString(CSSSize(CSSPixel::FromAppUnits(aSize.ISize(aWM)), |
| 9276 | CSSPixel::FromAppUnits(aSize.BSize(aWM)))); |
| 9277 | } |
| 9278 | return ToString(aSize); |
| 9279 | } |
| 9280 | |
| 9281 | // Debugging |
| 9282 | void nsIFrame::ListGeneric(nsACString& aTo, const char* aPrefix, |
| 9283 | ListFlags aFlags) const { |
| 9284 | aTo += aPrefix; |
| 9285 | const bool onlyDeterministic = |
| 9286 | aFlags.contains(ListFlag::OnlyListDeterministicInfo); |
| 9287 | aTo += ListTag(onlyDeterministic); |
| 9288 | if (!onlyDeterministic) { |
| 9289 | if (GetParent()) { |
| 9290 | aTo += nsPrintfCString(" parent=%p", static_cast<void*>(GetParent())); |
| 9291 | } |
| 9292 | if (GetNextSibling()) { |
| 9293 | aTo += nsPrintfCString(" next=%p", static_cast<void*>(GetNextSibling())); |
| 9294 | } |
| 9295 | } |
| 9296 | if (GetPrevContinuation()) { |
| 9297 | bool fluid = GetPrevInFlow() == GetPrevContinuation(); |
| 9298 | aTo += nsPrintfCString(" prev-%s", fluid ? "in-flow" : "continuation"); |
| 9299 | ListPtr(aTo, aFlags, GetPrevContinuation()); |
| 9300 | } |
| 9301 | if (GetNextContinuation()) { |
| 9302 | bool fluid = GetNextInFlow() == GetNextContinuation(); |
| 9303 | aTo += nsPrintfCString(" next-%s", fluid ? "in-flow" : "continuation"); |
| 9304 | ListPtr(aTo, aFlags, GetNextContinuation()); |
| 9305 | } |
| 9306 | if (const nsAtom* const autoPageValue = |
| 9307 | GetProperty(AutoPageValueProperty())) { |
| 9308 | aTo += " AutoPage="; |
| 9309 | aTo += nsAtomCString(autoPageValue); |
| 9310 | } |
| 9311 | if (const nsIFrame::PageValues* const pageValues = |
| 9312 | GetProperty(PageValuesProperty())) { |
| 9313 | aTo += " PageValues={"; |
| 9314 | if (pageValues->mStartPageValue) { |
| 9315 | aTo += nsAtomCString(pageValues->mStartPageValue); |
| 9316 | } else { |
| 9317 | aTo += "<null>"; |
| 9318 | } |
| 9319 | aTo += ", "; |
| 9320 | if (pageValues->mEndPageValue) { |
| 9321 | aTo += nsAtomCString(pageValues->mEndPageValue); |
| 9322 | } else { |
| 9323 | aTo += "<null>"; |
| 9324 | } |
| 9325 | aTo += "}"; |
| 9326 | } |
| 9327 | void* IBsibling = GetProperty(IBSplitSibling()); |
| 9328 | if (IBsibling) { |
| 9329 | aTo += nsPrintfCString(" IBSplitSibling"); |
| 9330 | ListPtr(aTo, aFlags, IBsibling); |
| 9331 | } |
| 9332 | void* IBprevsibling = GetProperty(IBSplitPrevSibling()); |
| 9333 | if (IBprevsibling) { |
| 9334 | aTo += nsPrintfCString(" IBSplitPrevSibling"); |
| 9335 | ListPtr(aTo, aFlags, IBprevsibling); |
| 9336 | } |
| 9337 | if (nsLayoutUtils::FontSizeInflationEnabled(PresContext())) { |
| 9338 | if (HasAnyStateBits(NS_FRAME_FONT_INFLATION_FLOW_ROOT)) { |
| 9339 | aTo += nsPrintfCString(" FFR"); |
| 9340 | if (nsFontInflationData* data = |
| 9341 | nsFontInflationData::FindFontInflationDataFor(this)) { |
| 9342 | aTo += nsPrintfCString( |
| 9343 | ",enabled=%s,UIS=%s", data->InflationEnabled() ? "yes" : "no", |
| 9344 | ConvertToString(data->UsableISize(), aFlags).c_str()); |
| 9345 | } |
| 9346 | } |
| 9347 | if (HasAnyStateBits(NS_FRAME_FONT_INFLATION_CONTAINER)) { |
| 9348 | aTo += nsPrintfCString(" FIC"); |
| 9349 | } |
| 9350 | aTo += nsPrintfCString(" FI=%f", nsLayoutUtils::FontSizeInflationFor(this)); |
| 9351 | } |
| 9352 | aTo += nsPrintfCString(" %s", ConvertToString(mRect, aFlags).c_str()); |
| 9353 | |
| 9354 | mozilla::WritingMode wm = GetWritingMode(); |
| 9355 | if (wm.IsVertical() || wm.IsBidiRTL()) { |
| 9356 | aTo += |
| 9357 | nsPrintfCString(" wm=%s logical-size=(%s)", ToString(wm).c_str(), |
| 9358 | ConvertToString(GetLogicalSize(), wm, aFlags).c_str()); |
| 9359 | } |
| 9360 | |
| 9361 | nsIFrame* parent = GetParent(); |
| 9362 | if (parent) { |
| 9363 | WritingMode pWM = parent->GetWritingMode(); |
| 9364 | if (pWM.IsVertical() || pWM.IsBidiRTL()) { |
| 9365 | nsSize containerSize = parent->mRect.Size(); |
| 9366 | LogicalRect lr(pWM, mRect, containerSize); |
| 9367 | aTo += nsPrintfCString(" parent-wm=%s cs=(%s) logical-rect=%s", |
| 9368 | ToString(pWM).c_str(), |
| 9369 | ConvertToString(containerSize, aFlags).c_str(), |
| 9370 | ConvertToString(lr, pWM, aFlags).c_str()); |
| 9371 | } |
| 9372 | } |
| 9373 | nsIFrame* f = const_cast<nsIFrame*>(this); |
| 9374 | if (f->HasOverflowAreas()) { |
| 9375 | nsRect io = f->InkOverflowRect(); |
| 9376 | if (!io.IsEqualEdges(mRect)) { |
| 9377 | aTo += nsPrintfCString(" ink-overflow=%s", |
| 9378 | ConvertToString(io, aFlags).c_str()); |
| 9379 | } |
| 9380 | nsRect so = f->ScrollableOverflowRect(); |
| 9381 | if (!so.IsEqualEdges(mRect)) { |
| 9382 | aTo += nsPrintfCString(" scr-overflow=%s", |
| 9383 | ConvertToString(so, aFlags).c_str()); |
| 9384 | } |
| 9385 | } |
| 9386 | if (OverflowAreas* preTransformOverflows = |
| 9387 | f->GetProperty(PreTransformOverflowAreasProperty())) { |
| 9388 | nsRect io = preTransformOverflows->InkOverflow(); |
| 9389 | if (!io.IsEqualEdges(mRect) && |
| 9390 | (!f->HasOverflowAreas() || !io.IsEqualEdges(f->InkOverflowRect()))) { |
| 9391 | aTo += nsPrintfCString(" pre-transform-ink-overflow=%s", |
| 9392 | ConvertToString(io, aFlags).c_str()); |
| 9393 | } |
| 9394 | nsRect so = preTransformOverflows->ScrollableOverflow(); |
| 9395 | if (!so.IsEqualEdges(mRect) && |
| 9396 | (!f->HasOverflowAreas() || |
| 9397 | !so.IsEqualEdges(f->ScrollableOverflowRect()))) { |
| 9398 | aTo += nsPrintfCString(" pre-transform-scr-overflow=%s", |
| 9399 | ConvertToString(so, aFlags).c_str()); |
| 9400 | } |
| 9401 | } |
| 9402 | bool hasNormalPosition; |
| 9403 | nsPoint normalPosition = GetNormalPosition(&hasNormalPosition); |
| 9404 | if (hasNormalPosition) { |
| 9405 | aTo += nsPrintfCString(" normal-position=%s", |
| 9406 | ConvertToString(normalPosition, aFlags).c_str()); |
| 9407 | } |
| 9408 | if (HasProperty(BidiDataProperty())) { |
| 9409 | FrameBidiData bidi = GetBidiData(); |
| 9410 | aTo += nsPrintfCString(" bidi(%d,%d,%d)", bidi.baseLevel.Value(), |
| 9411 | bidi.embeddingLevel.Value(), |
| 9412 | bidi.precedingControl.Value()); |
| 9413 | } |
| 9414 | if (IsTransformed()) { |
| 9415 | aTo += nsPrintfCString(" transformed"); |
| 9416 | } |
| 9417 | if (ChildrenHavePerspective()) { |
| 9418 | aTo += nsPrintfCString(" perspective"); |
| 9419 | } |
| 9420 | if (Extend3DContext()) { |
| 9421 | aTo += nsPrintfCString(" extend-3d"); |
| 9422 | } |
| 9423 | if (Combines3DTransformWithAncestors()) { |
| 9424 | aTo += nsPrintfCString(" combines-3d-transform-with-ancestors"); |
| 9425 | } |
| 9426 | if (mContent) { |
| 9427 | if (!onlyDeterministic) { |
| 9428 | aTo += nsPrintfCString(" [content=%p]", static_cast<void*>(mContent)); |
| 9429 | } |
| 9430 | if (IsPrimaryFrame() && DisplayPortUtils::HasDisplayPort(mContent)) { |
| 9431 | // Anon boxes and continuations point to the same content - Just print on |
| 9432 | // primary frame. |
| 9433 | aTo += "[displayport]"_ns; |
| 9434 | } |
| 9435 | } |
| 9436 | if (!onlyDeterministic) { |
| 9437 | aTo += nsPrintfCString("[cs=%p]", static_cast<void*>(mComputedStyle)); |
| 9438 | } |
| 9439 | if (mComputedStyle) { |
| 9440 | const auto pseudoType = mComputedStyle->GetPseudoType(); |
| 9441 | const auto pseudoTypeStr = ToString(pseudoType); |
| 9442 | if (!pseudoTypeStr.empty()) { |
| 9443 | aTo += nsPrintfCString("[%s]", pseudoTypeStr.c_str()); |
| 9444 | } |
| 9445 | } |
| 9446 | |
| 9447 | auto contentVisibility = StyleDisplay()->ContentVisibility(*this); |
| 9448 | if (contentVisibility != StyleContentVisibility::Visible) { |
| 9449 | aTo += nsPrintfCString(" [content-visibility="); |
| 9450 | if (contentVisibility == StyleContentVisibility::Auto) { |
| 9451 | aTo += "auto, "_ns; |
| 9452 | } else if (contentVisibility == StyleContentVisibility::Hidden) { |
| 9453 | aTo += "hidden, "_ns; |
| 9454 | } |
| 9455 | |
| 9456 | if (HidesContent()) { |
| 9457 | aTo += "HidesContent=hidden"_ns; |
| 9458 | } else { |
| 9459 | aTo += "HidesContent=visibile"_ns; |
| 9460 | } |
| 9461 | aTo += "]"; |
| 9462 | } |
| 9463 | |
| 9464 | if (IsFrameModified()) { |
| 9465 | aTo += nsPrintfCString(" modified"); |
| 9466 | } |
| 9467 | |
| 9468 | if (HasModifiedDescendants()) { |
| 9469 | aTo += nsPrintfCString(" has-modified-descendants"); |
| 9470 | } |
| 9471 | } |
| 9472 | |
| 9473 | void nsIFrame::List(FILE* out, const char* aPrefix, ListFlags aFlags) const { |
| 9474 | nsCString str; |
| 9475 | ListGeneric(str, aPrefix, aFlags); |
| 9476 | fprintf_stderr(out, "%s\n", str.get()); |
| 9477 | } |
| 9478 | |
| 9479 | void nsIFrame::ListTextRuns(FILE* out) const { |
| 9480 | nsTHashSet<const void*> seen; |
| 9481 | ListTextRuns(out, seen); |
| 9482 | } |
| 9483 | |
| 9484 | void nsIFrame::ListTextRuns(FILE* out, nsTHashSet<const void*>& aSeen) const { |
| 9485 | for (const auto& childList : ChildLists()) { |
| 9486 | for (const nsIFrame* kid : childList.mList) { |
| 9487 | kid->ListTextRuns(out, aSeen); |
| 9488 | } |
| 9489 | } |
| 9490 | } |
| 9491 | |
| 9492 | void nsIFrame::ListMatchedRules(FILE* out, const char* aPrefix) const { |
| 9493 | AutoTArray<StyleMatchingDeclarationBlock, 8> decls; |
| 9494 | Servo_ComputedValues_GetMatchingDeclarations( |
| 9495 | Style(), /* with_starting_style = */ false, &decls); |
| 9496 | for (const StyleMatchingDeclarationBlock& block : decls) { |
| 9497 | nsAutoCString ruleText; |
| 9498 | Servo_DeclarationBlock_GetCssText(block.block, &ruleText); |
| 9499 | fprintf_stderr(out, "%s%s\n", aPrefix, ruleText.get()); |
| 9500 | } |
| 9501 | } |
| 9502 | |
| 9503 | void nsIFrame::ListWithMatchedRules(FILE* out, const char* aPrefix) const { |
| 9504 | fprintf_stderr(out, "%s%s\n", aPrefix, ListTag().get()); |
| 9505 | |
| 9506 | nsCString rulePrefix; |
| 9507 | rulePrefix += aPrefix; |
| 9508 | rulePrefix += " "; |
| 9509 | ListMatchedRules(out, rulePrefix.get()); |
| 9510 | } |
| 9511 | |
| 9512 | nsresult nsIFrame::GetFrameName(nsAString& aResult) const { |
| 9513 | return MakeFrameName(u"Frame"_ns, aResult); |
| 9514 | } |
| 9515 | |
| 9516 | nsresult nsIFrame::MakeFrameName(const nsAString& aType, |
| 9517 | nsAString& aResult) const { |
| 9518 | aResult = aType; |
| 9519 | if (mContent && !mContent->IsText()) { |
| 9520 | nsAutoString buf; |
| 9521 | mContent->NodeInfo()->NameAtom()->ToString(buf); |
| 9522 | if (nsAtom* id = mContent->GetID()) { |
| 9523 | buf.AppendLiteral(" id="); |
| 9524 | buf.Append(nsDependentAtomString(id)); |
| 9525 | } |
| 9526 | if (IsSubDocumentFrame()) { |
| 9527 | nsAutoString src; |
| 9528 | mContent->AsElement()->GetAttr(nsGkAtoms::src, src); |
| 9529 | buf.AppendLiteral(" src="); |
| 9530 | buf.Append(src); |
| 9531 | } |
| 9532 | aResult.Append('('); |
| 9533 | aResult.Append(buf); |
| 9534 | aResult.Append(')'); |
| 9535 | } |
| 9536 | aResult.Append('('); |
| 9537 | Maybe<uint32_t> index = ContentIndexInContainer(this); |
| 9538 | if (index.isSome()) { |
| 9539 | aResult.AppendInt(*index); |
| 9540 | } else { |
| 9541 | aResult.AppendInt(-1); |
| 9542 | } |
| 9543 | aResult.Append(')'); |
| 9544 | return NS_OK; |
| 9545 | } |
| 9546 | |
| 9547 | void nsIFrame::DumpFrameTree() const { DumpFrameTree(false); } |
| 9548 | |
| 9549 | void nsIFrame::DumpFrameTree(bool aListOnlyDeterministic) const { |
| 9550 | ListFlags flags; |
| 9551 | if (aListOnlyDeterministic) { |
| 9552 | flags += ListFlag::OnlyListDeterministicInfo; |
| 9553 | } |
| 9554 | PresShell()->GetRootFrame()->List(stderrstderr, "", flags); |
| 9555 | } |
| 9556 | |
| 9557 | void nsIFrame::DumpFrameTreeInCSSPixels() const { |
| 9558 | DumpFrameTreeInCSSPixels(false); |
| 9559 | } |
| 9560 | |
| 9561 | void nsIFrame::DumpFrameTreeInCSSPixels(bool aListOnlyDeterministic) const { |
| 9562 | ListFlags flags{ListFlag::DisplayInCSSPixels}; |
| 9563 | if (aListOnlyDeterministic) { |
| 9564 | flags += ListFlag::OnlyListDeterministicInfo; |
| 9565 | } |
| 9566 | PresShell()->GetRootFrame()->List(stderrstderr, "", flags); |
| 9567 | } |
| 9568 | |
| 9569 | void nsIFrame::DumpFrameTreeLimited() const { List(stderrstderr); } |
| 9570 | void nsIFrame::DumpFrameTreeLimitedInCSSPixels() const { |
| 9571 | List(stderrstderr, "", ListFlag::DisplayInCSSPixels); |
| 9572 | } |
| 9573 | |
| 9574 | #endif |
| 9575 | |
| 9576 | static bool IsFragmentedPageContent(const nsIFrame* aFrame) { |
| 9577 | MOZ_ASSERT(aFrame->IsPageContentFrame())do { static_assert( mozilla::detail::AssertionConditionType< decltype(aFrame->IsPageContentFrame())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aFrame->IsPageContentFrame ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aFrame->IsPageContentFrame()", "./../../../layout/generic/nsIFrame.cpp" , 9577); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aFrame->IsPageContentFrame()" ")"); do { MOZ_CrashSequence(__null, 9577); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9578 | return aFrame->GetPrevInFlow() || aFrame->GetNextInFlow(); |
| 9579 | } |
| 9580 | |
| 9581 | static bool IsReplicatedFixedPos(const nsIFrame* aFrame) { |
| 9582 | return aFrame->StyleDisplay()->mPosition == StylePositionProperty::Fixed && |
| 9583 | nsLayoutUtils::IsReallyFixedPos(aFrame) && |
| 9584 | IsFragmentedPageContent(aFrame->GetParent()); |
| 9585 | } |
| 9586 | |
| 9587 | // FIXME(emilio, bug 1633685): We should ideally figure out how to properly |
| 9588 | // restyle replicated fixed pos frames... We seem to assume everywhere that they |
| 9589 | // can't get restyled at the moment... |
| 9590 | bool nsIFrame::IsInReplicatedFixedPosTree() const { |
| 9591 | if (!PresContext()->IsPaginated()) { |
| 9592 | return false; |
| 9593 | } |
| 9594 | for (const nsIFrame* f = this; f; f = f->GetParent()) { |
| 9595 | if (IsReplicatedFixedPos(f)) { |
| 9596 | return true; |
| 9597 | } |
| 9598 | } |
| 9599 | return false; |
| 9600 | } |
| 9601 | |
| 9602 | bool nsIFrame::ContainsReplicatedFixedPosPlaceholders() const { |
| 9603 | if (!PresContext()->IsPaginated()) { |
| 9604 | return false; |
| 9605 | } |
| 9606 | // Assumption here is that, in the common case, this will be faster than a |
| 9607 | // whole subtree walk. |
| 9608 | auto* ancestorPageContent = |
| 9609 | nsLayoutUtils::GetClosestFrameOfType(this, LayoutFrameType::PageContent); |
| 9610 | if (!ancestorPageContent || !IsFragmentedPageContent(ancestorPageContent)) { |
| 9611 | return false; |
| 9612 | } |
| 9613 | for (auto* f : ancestorPageContent->GetChildList(ChildListID::Absolute)) { |
| 9614 | if (!IsReplicatedFixedPos(f)) { |
| 9615 | continue; |
| 9616 | } |
| 9617 | auto* ph = f->GetPlaceholderFrame(); |
| 9618 | if (NS_WARN_IF(!ph)NS_warn_if_impl(!ph, "!ph", "./../../../layout/generic/nsIFrame.cpp" , 9618)) { |
| 9619 | continue; |
| 9620 | } |
| 9621 | if (nsLayoutUtils::IsProperAncestorFrame(this, ph)) { |
| 9622 | return true; |
| 9623 | } |
| 9624 | } |
| 9625 | return false; |
| 9626 | } |
| 9627 | |
| 9628 | bool nsIFrame::IsVisibleForPainting() const { |
| 9629 | return StyleVisibility()->IsVisible(); |
| 9630 | } |
| 9631 | |
| 9632 | bool nsIFrame::IsVisibleOrCollapsedForPainting() const { |
| 9633 | return StyleVisibility()->IsVisibleOrCollapsed(); |
| 9634 | } |
| 9635 | |
| 9636 | /* virtual */ |
| 9637 | bool nsIFrame::IsEmpty() { |
| 9638 | return IsHiddenByContentVisibilityOfInFlowParentForLayout(); |
| 9639 | } |
| 9640 | |
| 9641 | bool nsIFrame::CachedIsEmpty() { |
| 9642 | NS_ASSERTION(!HasAnyStateBits(NS_FRAME_IS_DIRTY) ||do { if (!(!HasAnyStateBits(NS_FRAME_IS_DIRTY) || IsHiddenByContentVisibilityOfInFlowParentForLayout ())) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Must only be called on reflowed lines or those hidden by " "content-visibility.", "!HasAnyStateBits(NS_FRAME_IS_DIRTY) || IsHiddenByContentVisibilityOfInFlowParentForLayout()" , "./../../../layout/generic/nsIFrame.cpp", 9645); MOZ_PretendNoReturn (); } } while (0) |
| 9643 | IsHiddenByContentVisibilityOfInFlowParentForLayout(),do { if (!(!HasAnyStateBits(NS_FRAME_IS_DIRTY) || IsHiddenByContentVisibilityOfInFlowParentForLayout ())) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Must only be called on reflowed lines or those hidden by " "content-visibility.", "!HasAnyStateBits(NS_FRAME_IS_DIRTY) || IsHiddenByContentVisibilityOfInFlowParentForLayout()" , "./../../../layout/generic/nsIFrame.cpp", 9645); MOZ_PretendNoReturn (); } } while (0) |
| 9644 | "Must only be called on reflowed lines or those hidden by "do { if (!(!HasAnyStateBits(NS_FRAME_IS_DIRTY) || IsHiddenByContentVisibilityOfInFlowParentForLayout ())) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Must only be called on reflowed lines or those hidden by " "content-visibility.", "!HasAnyStateBits(NS_FRAME_IS_DIRTY) || IsHiddenByContentVisibilityOfInFlowParentForLayout()" , "./../../../layout/generic/nsIFrame.cpp", 9645); MOZ_PretendNoReturn (); } } while (0) |
| 9645 | "content-visibility.")do { if (!(!HasAnyStateBits(NS_FRAME_IS_DIRTY) || IsHiddenByContentVisibilityOfInFlowParentForLayout ())) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Must only be called on reflowed lines or those hidden by " "content-visibility.", "!HasAnyStateBits(NS_FRAME_IS_DIRTY) || IsHiddenByContentVisibilityOfInFlowParentForLayout()" , "./../../../layout/generic/nsIFrame.cpp", 9645); MOZ_PretendNoReturn (); } } while (0); |
| 9646 | return IsEmpty(); |
| 9647 | } |
| 9648 | |
| 9649 | /* virtual */ |
| 9650 | bool nsIFrame::IsSelfEmpty() { |
| 9651 | return IsHiddenByContentVisibilityOfInFlowParentForLayout(); |
| 9652 | } |
| 9653 | |
| 9654 | nsISelectionController* nsIFrame::GetSelectionController() const { |
| 9655 | if (nsTextControlFrame* const tcf = GetContainingTextControlFrame()) { |
| 9656 | return tcf->ControlElement()->GetSelectionController(); |
| 9657 | } |
| 9658 | return static_cast<nsISelectionController*>(PresShell()); |
| 9659 | } |
| 9660 | |
| 9661 | int16_t nsIFrame::GetDisplaySelection() const { |
| 9662 | nsISelectionController* const selCon = GetSelectionController(); |
| 9663 | if (MOZ_UNLIKELY(!selCon)(__builtin_expect(!!(!selCon), 0))) { |
| 9664 | return nsISelectionController::SELECTION_OFF; |
| 9665 | } |
| 9666 | int16_t display = nsISelectionController::SELECTION_OFF; |
| 9667 | selCon->GetDisplaySelection(&display); |
| 9668 | return display; |
| 9669 | } |
| 9670 | |
| 9671 | already_AddRefed<nsFrameSelection> nsIFrame::GetFrameSelection() { |
| 9672 | RefPtr<nsFrameSelection> fs = |
| 9673 | const_cast<nsFrameSelection*>(GetConstFrameSelection()); |
| 9674 | return fs.forget(); |
| 9675 | } |
| 9676 | |
| 9677 | const nsFrameSelection* nsIFrame::GetConstFrameSelection() const { |
| 9678 | if (nsTextControlFrame* tcf = GetContainingTextControlFrame()) { |
| 9679 | return tcf->GetOwnedFrameSelection(); |
| 9680 | } |
| 9681 | return PresShell()->ConstFrameSelection(); |
| 9682 | } |
| 9683 | |
| 9684 | bool nsIFrame::IsFrameSelected() const { |
| 9685 | NS_ASSERTION(!GetContent() || GetContent()->IsMaybeSelected(),do { if (!(!GetContent() || GetContent()->IsMaybeSelected( ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "use the public IsSelected() instead" , "!GetContent() || GetContent()->IsMaybeSelected()", "./../../../layout/generic/nsIFrame.cpp" , 9686); MOZ_PretendNoReturn(); } } while (0) |
| 9686 | "use the public IsSelected() instead")do { if (!(!GetContent() || GetContent()->IsMaybeSelected( ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "use the public IsSelected() instead" , "!GetContent() || GetContent()->IsMaybeSelected()", "./../../../layout/generic/nsIFrame.cpp" , 9686); MOZ_PretendNoReturn(); } } while (0); |
| 9687 | if (const ShadowRoot* shadowRoot = |
| 9688 | GetContent()->GetShadowRootForSelection()) { |
| 9689 | return shadowRoot->IsSelected(0, shadowRoot->GetChildCount()); |
| 9690 | } |
| 9691 | return GetContent()->IsSelected(0, GetContent()->GetChildCount()); |
| 9692 | } |
| 9693 | |
| 9694 | nsresult nsIFrame::GetPointFromOffset(int32_t inOffset, nsPoint* outPoint) { |
| 9695 | MOZ_ASSERT(outPoint != nullptr, "Null parameter")do { static_assert( mozilla::detail::AssertionConditionType< decltype(outPoint != nullptr)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(outPoint != nullptr))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("outPoint != nullptr" " (" "Null parameter" ")", "./../../../layout/generic/nsIFrame.cpp" , 9695); AnnotateMozCrashReason("MOZ_ASSERT" "(" "outPoint != nullptr" ") (" "Null parameter" ")"); do { MOZ_CrashSequence(__null, 9695 ); __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 9696 | nsRect contentRect = GetContentRectRelativeToSelf(); |
| 9697 | nsPoint pt = contentRect.TopLeft(); |
| 9698 | if (mContent) { |
| 9699 | nsIContent* newContent = mContent->GetParent(); |
| 9700 | if (newContent) { |
| 9701 | const int32_t newOffset = newContent->ComputeIndexOf_Deprecated(mContent); |
| 9702 | |
| 9703 | // Find the direction of the frame from the EmbeddingLevelProperty, |
| 9704 | // which is the resolved bidi level set in |
| 9705 | // nsBidiPresUtils::ResolveParagraph (odd levels = right-to-left). |
| 9706 | // If the embedding level isn't set, just use the CSS direction |
| 9707 | // property. |
| 9708 | bool hasBidiData; |
| 9709 | FrameBidiData bidiData = GetProperty(BidiDataProperty(), &hasBidiData); |
| 9710 | bool isRTL = hasBidiData |
| 9711 | ? bidiData.embeddingLevel.IsRTL() |
| 9712 | : StyleVisibility()->mDirection == StyleDirection::Rtl; |
| 9713 | if ((!isRTL && inOffset > newOffset) || |
| 9714 | (isRTL && inOffset <= newOffset)) { |
| 9715 | pt = contentRect.TopRight(); |
| 9716 | } |
| 9717 | } |
| 9718 | } |
| 9719 | *outPoint = pt; |
| 9720 | return NS_OK; |
| 9721 | } |
| 9722 | |
| 9723 | nsresult nsIFrame::GetCharacterRectsInRange(int32_t aInOffset, int32_t aLength, |
| 9724 | nsTArray<nsRect>& aOutRect) { |
| 9725 | /* no text */ |
| 9726 | return NS_ERROR_FAILURE; |
| 9727 | } |
| 9728 | |
| 9729 | nsresult nsIFrame::GetChildFrameContainingOffset(int32_t inContentOffset, |
| 9730 | bool inHint, |
| 9731 | int32_t* outFrameContentOffset, |
| 9732 | nsIFrame** outChildFrame) { |
| 9733 | MOZ_ASSERT(outChildFrame && outFrameContentOffset, "Null parameter")do { static_assert( mozilla::detail::AssertionConditionType< decltype(outChildFrame && outFrameContentOffset)>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(outChildFrame && outFrameContentOffset))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("outChildFrame && outFrameContentOffset" " (" "Null parameter" ")", "./../../../layout/generic/nsIFrame.cpp" , 9733); AnnotateMozCrashReason("MOZ_ASSERT" "(" "outChildFrame && outFrameContentOffset" ") (" "Null parameter" ")"); do { MOZ_CrashSequence(__null, 9733 ); __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 9734 | *outFrameContentOffset = (int32_t)inHint; |
| 9735 | // the best frame to reflect any given offset would be a visible frame if |
| 9736 | // possible i.e. we are looking for a valid frame to place the blinking caret |
| 9737 | nsRect rect = GetRect(); |
| 9738 | if (!rect.width || !rect.height) { |
| 9739 | // if we have a 0 width or height then lets look for another frame that |
| 9740 | // possibly has the same content. If we have no frames in flow then just |
| 9741 | // let us return 'this' frame |
| 9742 | nsIFrame* nextFlow = GetNextInFlow(); |
| 9743 | if (nextFlow) { |
| 9744 | return nextFlow->GetChildFrameContainingOffset( |
| 9745 | inContentOffset, inHint, outFrameContentOffset, outChildFrame); |
| 9746 | } |
| 9747 | } |
| 9748 | *outChildFrame = this; |
| 9749 | return NS_OK; |
| 9750 | } |
| 9751 | |
| 9752 | // |
| 9753 | // What I've pieced together about this routine: |
| 9754 | // Starting with a block frame (from which a line frame can be gotten) |
| 9755 | // and a line number, drill down and get the first/last selectable |
| 9756 | // frame on that line, depending on aPos->mDirection. |
| 9757 | // aOutSideLimit != 0 means ignore aLineStart, instead work from |
| 9758 | // the end (if > 0) or beginning (if < 0). |
| 9759 | // |
| 9760 | static nsresult GetNextPrevLineFromBlockFrame(PeekOffsetStruct* aPos, |
| 9761 | nsIFrame* aBlockFrame, |
| 9762 | int32_t aLineStart, |
| 9763 | int8_t aOutSideLimit) { |
| 9764 | MOZ_ASSERT(aPos)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aPos)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(aPos))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("aPos", "./../../../layout/generic/nsIFrame.cpp" , 9764); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPos" ")"); do { MOZ_CrashSequence(__null, 9764); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9765 | MOZ_ASSERT(aBlockFrame)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aBlockFrame)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aBlockFrame))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aBlockFrame", "./../../../layout/generic/nsIFrame.cpp" , 9765); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aBlockFrame" ")"); do { MOZ_CrashSequence(__null, 9765); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9766 | |
| 9767 | nsPresContext* pc = aBlockFrame->PresContext(); |
| 9768 | |
| 9769 | // magic numbers: aLineStart will be -1 for end of block, 0 will be start of |
| 9770 | // block. |
| 9771 | |
| 9772 | aPos->mResultFrame = nullptr; |
| 9773 | aPos->mResultContent = nullptr; |
| 9774 | aPos->mAttach = aPos->mDirection == eDirNext ? CaretAssociationHint::After |
| 9775 | : CaretAssociationHint::Before; |
| 9776 | |
| 9777 | AutoAssertNoDomMutations guard; |
| 9778 | nsILineIterator* it = aBlockFrame->GetLineIterator(); |
| 9779 | if (!it) { |
| 9780 | return NS_ERROR_FAILURE; |
| 9781 | } |
| 9782 | int32_t searchingLine = aLineStart; |
| 9783 | int32_t countLines = it->GetNumLines(); |
| 9784 | if (aOutSideLimit > 0) { // start at end |
| 9785 | searchingLine = countLines; |
| 9786 | } else if (aOutSideLimit < 0) { // start at beginning |
| 9787 | searchingLine = -1; //"next" will be 0 |
| 9788 | } else if ((aPos->mDirection == eDirPrevious && searchingLine == 0) || |
| 9789 | (aPos->mDirection == eDirNext && |
| 9790 | searchingLine >= (countLines - 1))) { |
| 9791 | // Not found. |
| 9792 | return NS_ERROR_FAILURE; |
| 9793 | } |
| 9794 | nsIFrame* resultFrame = nullptr; |
| 9795 | nsIFrame* farStoppingFrame = nullptr; // we keep searching until we find a |
| 9796 | // "this" frame then we go to next line |
| 9797 | nsIFrame* nearStoppingFrame = nullptr; // if we are backing up from edge, |
| 9798 | // stop here |
| 9799 | bool isBeforeFirstFrame, isAfterLastFrame; |
| 9800 | bool found = false; |
| 9801 | |
| 9802 | const bool forceInEditableRegion = |
| 9803 | aPos->mOptions.contains(PeekOffsetOption::ForceEditableRegion); |
| 9804 | while (!found) { |
| 9805 | if (aPos->mDirection == eDirPrevious) { |
| 9806 | searchingLine--; |
| 9807 | } else { |
| 9808 | searchingLine++; |
| 9809 | } |
| 9810 | if ((aPos->mDirection == eDirPrevious && searchingLine < 0) || |
| 9811 | (aPos->mDirection == eDirNext && searchingLine >= countLines)) { |
| 9812 | // we need to jump to new block frame. |
| 9813 | return NS_ERROR_FAILURE; |
| 9814 | } |
| 9815 | { |
| 9816 | auto line = it->GetLine(searchingLine).unwrap(); |
| 9817 | if (!line.mNumFramesOnLine) { |
| 9818 | continue; |
| 9819 | } |
| 9820 | nsIFrame* firstFrame = nullptr; |
| 9821 | nsIFrame* lastFrame = nullptr; |
| 9822 | nsIFrame* frame = line.mFirstFrameOnLine; |
| 9823 | int32_t i = line.mNumFramesOnLine; |
| 9824 | do { |
| 9825 | // If the caller wants a frame for a inclusive ancestor of the ancestor |
| 9826 | // limiter, ignore frames for outside the limiter. |
| 9827 | if (aPos->FrameContentIsInAncestorLimiter(frame)) { |
| 9828 | if (!firstFrame) { |
| 9829 | firstFrame = frame; |
| 9830 | } |
| 9831 | lastFrame = frame; |
| 9832 | } |
| 9833 | if (i == 1) { |
| 9834 | break; |
| 9835 | } |
| 9836 | frame = frame->GetNextSibling(); |
| 9837 | if (!frame) { |
| 9838 | NS_ERROR("GetLine promised more frames than could be found")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "GetLine promised more frames than could be found" , "Error", "./../../../layout/generic/nsIFrame.cpp", 9838); MOZ_PretendNoReturn (); } while (0); |
| 9839 | return NS_ERROR_FAILURE; |
| 9840 | } |
| 9841 | } while (--i); |
| 9842 | if (!lastFrame) { |
| 9843 | // If we're looking for an editable content frame, but all frames in the |
| 9844 | // line are not in the specified editing host, return error because we |
| 9845 | // must reach the editing host boundary. |
| 9846 | return NS_ERROR_FAILURE; |
| 9847 | } |
| 9848 | // Don't enter into native anonymous subtrees. |
| 9849 | if (!lastFrame->ContentIsRootOfNativeAnonymousSubtree()) { |
| 9850 | nsIFrame::GetLastLeaf(&lastFrame); |
| 9851 | } |
| 9852 | |
| 9853 | if (aPos->mDirection == eDirNext) { |
| 9854 | nearStoppingFrame = firstFrame; |
| 9855 | farStoppingFrame = lastFrame; |
| 9856 | } else { |
| 9857 | nearStoppingFrame = lastFrame; |
| 9858 | farStoppingFrame = firstFrame; |
| 9859 | } |
| 9860 | } |
| 9861 | nsPoint offset = aBlockFrame->GetOffsetToRootFrame(); |
| 9862 | nsPoint newDesiredPos = |
| 9863 | aPos->mDesiredCaretPos - |
| 9864 | offset; // get desired position into blockframe coords |
| 9865 | // TODO: nsILineIterator::FindFrameAt should take optional editing host |
| 9866 | // parameter and if it's set, it should return the nearest editable frame |
| 9867 | // for the editing host when the frame at the desired position is not |
| 9868 | // editable. |
| 9869 | nsresult rv = it->FindFrameAt(searchingLine, newDesiredPos, &resultFrame, |
| 9870 | &isBeforeFirstFrame, &isAfterLastFrame); |
| 9871 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
| 9872 | continue; |
| 9873 | } |
| 9874 | |
| 9875 | if (resultFrame) { |
| 9876 | // If ancestor limiter is specified and we reached outside content of it, |
| 9877 | // return error because we reached its element boundary. |
| 9878 | if (!aPos->FrameContentIsInAncestorLimiter(resultFrame)) { |
| 9879 | return NS_ERROR_FAILURE; |
| 9880 | } |
| 9881 | // Check to see if this is ANOTHER blockframe inside the other one that |
| 9882 | // we should look inside. |
| 9883 | if (resultFrame->CanProvideLineIterator() && |
| 9884 | IsRelevantBlockFrame(resultFrame)) { |
| 9885 | aPos->mResultFrame = resultFrame; |
| 9886 | return NS_OK; |
| 9887 | } |
| 9888 | // resultFrame is not a block frame |
| 9889 | Maybe<nsFrameIterator> frameIterator; |
| 9890 | frameIterator.emplace( |
| 9891 | pc, resultFrame, nsFrameIterator::Type::PostOrder, |
| 9892 | false, // aVisual |
| 9893 | aPos->mOptions.contains(PeekOffsetOption::StopAtScroller), |
| 9894 | false, // aFollowOOFs |
| 9895 | false // aSkipPopupChecks |
| 9896 | ); |
| 9897 | |
| 9898 | auto FoundValidFrame = [forceInEditableRegion, aPos]( |
| 9899 | const nsIFrame::ContentOffsets& aOffsets, |
| 9900 | const nsIFrame* aFrame) { |
| 9901 | if (!aOffsets.content) { |
| 9902 | return false; |
| 9903 | } |
| 9904 | if (!aFrame->IsSelectable()) { |
| 9905 | return false; |
| 9906 | } |
| 9907 | if (aPos->mAncestorLimiter && |
| 9908 | !aOffsets.content->IsInclusiveDescendantOf( |
| 9909 | aPos->mAncestorLimiter)) { |
| 9910 | return false; |
| 9911 | } |
| 9912 | if (forceInEditableRegion && !aOffsets.content->IsEditable()) { |
| 9913 | return false; |
| 9914 | } |
| 9915 | return true; |
| 9916 | }; |
| 9917 | |
| 9918 | nsIFrame* storeOldResultFrame = resultFrame; |
| 9919 | while (!found) { |
| 9920 | nsPoint point; |
| 9921 | nsRect tempRect = resultFrame->GetRect(); |
| 9922 | nsPoint offset = resultFrame->GetOffsetToRootFrame(); |
| 9923 | if (resultFrame->GetWritingMode().IsVertical()) { |
| 9924 | point.y = aPos->mDesiredCaretPos.y; |
| 9925 | point.x = tempRect.width + offset.x; |
| 9926 | } else { |
| 9927 | point.y = tempRect.height + offset.y; |
| 9928 | point.x = aPos->mDesiredCaretPos.x; |
| 9929 | } |
| 9930 | |
| 9931 | if (!resultFrame->IsViewportFrame()) { |
| 9932 | nsPoint offset = resultFrame->GetOffsetToRootFrame(); |
| 9933 | nsIFrame::ContentOffsets offsets = |
| 9934 | resultFrame->GetContentOffsetsFromPoint( |
| 9935 | point - offset, nsIFrame::IGNORE_NATIVE_ANONYMOUS_SUBTREE); |
| 9936 | aPos->mResultContent = offsets.content; |
| 9937 | aPos->mContentOffset = offsets.offset; |
| 9938 | aPos->mAttach = offsets.associate; |
| 9939 | if (FoundValidFrame(offsets, resultFrame)) { |
| 9940 | found = true; |
| 9941 | break; |
| 9942 | } |
| 9943 | } |
| 9944 | |
| 9945 | if (aPos->mDirection == eDirPrevious && |
| 9946 | resultFrame == farStoppingFrame) { |
| 9947 | break; |
| 9948 | } |
| 9949 | if (aPos->mDirection == eDirNext && resultFrame == nearStoppingFrame) { |
| 9950 | break; |
| 9951 | } |
| 9952 | // always try previous on THAT line if that fails go the other way |
| 9953 | resultFrame = frameIterator->Traverse(/* aForward = */ false); |
| 9954 | if (!resultFrame) { |
| 9955 | return NS_ERROR_FAILURE; |
| 9956 | } |
| 9957 | } |
| 9958 | |
| 9959 | if (!found) { |
| 9960 | resultFrame = storeOldResultFrame; |
| 9961 | frameIterator.reset(); |
| 9962 | frameIterator.emplace( |
| 9963 | pc, resultFrame, nsFrameIterator::Type::Leaf, |
| 9964 | false, // aVisual |
| 9965 | aPos->mOptions.contains(PeekOffsetOption::StopAtScroller), |
| 9966 | false, // aFollowOOFs |
| 9967 | false // aSkipPopupChecks |
| 9968 | ); |
| 9969 | MOZ_ASSERT(frameIterator)do { static_assert( mozilla::detail::AssertionConditionType< decltype(frameIterator)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(frameIterator))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("frameIterator", "./../../../layout/generic/nsIFrame.cpp", 9969); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "frameIterator" ")"); do { MOZ_CrashSequence (__null, 9969); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 9970 | } |
| 9971 | while (!found) { |
| 9972 | nsPoint point = aPos->mDesiredCaretPos; |
| 9973 | nsPoint offset = resultFrame->GetOffsetToRootFrame(); |
| 9974 | nsIFrame::ContentOffsets offsets = |
| 9975 | resultFrame->GetContentOffsetsFromPoint( |
| 9976 | point - offset, nsIFrame::IGNORE_NATIVE_ANONYMOUS_SUBTREE); |
| 9977 | aPos->mResultContent = offsets.content; |
| 9978 | aPos->mContentOffset = offsets.offset; |
| 9979 | aPos->mAttach = offsets.associate; |
| 9980 | if (FoundValidFrame(offsets, resultFrame)) { |
| 9981 | found = true; |
| 9982 | aPos->mAttach = resultFrame == farStoppingFrame |
| 9983 | ? CaretAssociationHint::Before |
| 9984 | : CaretAssociationHint::After; |
| 9985 | break; |
| 9986 | } |
| 9987 | if (aPos->mDirection == eDirPrevious && |
| 9988 | resultFrame == nearStoppingFrame) { |
| 9989 | break; |
| 9990 | } |
| 9991 | if (aPos->mDirection == eDirNext && resultFrame == farStoppingFrame) { |
| 9992 | break; |
| 9993 | } |
| 9994 | // previous didnt work now we try "next" |
| 9995 | nsIFrame* tempFrame = frameIterator->Traverse(/* aForward = */ true); |
| 9996 | if (!tempFrame) { |
| 9997 | break; |
| 9998 | } |
| 9999 | resultFrame = tempFrame; |
| 10000 | } |
| 10001 | aPos->mResultFrame = resultFrame; |
| 10002 | } else { |
| 10003 | // we need to jump to new block frame. |
| 10004 | aPos->mAmount = eSelectLine; |
| 10005 | aPos->mStartOffset = 0; |
| 10006 | aPos->mAttach = aPos->mDirection == eDirNext |
| 10007 | ? CaretAssociationHint::Before |
| 10008 | : CaretAssociationHint::After; |
| 10009 | if (aPos->mDirection == eDirPrevious) { |
| 10010 | aPos->mStartOffset = -1; // start from end |
| 10011 | } |
| 10012 | return aBlockFrame->PeekOffset(aPos); |
| 10013 | } |
| 10014 | } |
| 10015 | return NS_OK; |
| 10016 | } |
| 10017 | |
| 10018 | nsIFrame::CaretPosition nsIFrame::GetExtremeCaretPosition(bool aStart, |
| 10019 | uint32_t aFlags) { |
| 10020 | CaretPosition result; |
| 10021 | |
| 10022 | FrameTarget targetFrame = DrillDownToSelectionFrame(this, !aStart, aFlags); |
| 10023 | FrameContentRange range = GetRangeForFrame(targetFrame.frame); |
| 10024 | result.mResultContent = range.content; |
| 10025 | result.mContentOffset = aStart ? range.start : range.end; |
| 10026 | return result; |
| 10027 | } |
| 10028 | |
| 10029 | // If this is a preformatted text frame, see if it ends with a newline |
| 10030 | static nsContentAndOffset FindLineBreakInText(nsIFrame* aFrame, |
| 10031 | nsDirection aDirection) { |
| 10032 | nsContentAndOffset result; |
| 10033 | |
| 10034 | if (aFrame->IsGeneratedContentFrame() || |
| 10035 | !aFrame->HasSignificantTerminalNewline()) { |
| 10036 | return result; |
| 10037 | } |
| 10038 | |
| 10039 | int32_t endOffset = aFrame->GetOffsets().second; |
| 10040 | result.mContent = aFrame->GetContent(); |
| 10041 | result.mOffset = endOffset - (aDirection == eDirPrevious ? 0 : 1); |
| 10042 | result.mIsTerminalNewlineInText = true; |
| 10043 | return result; |
| 10044 | } |
| 10045 | |
| 10046 | // Find the first (or last) descendant of the given frame |
| 10047 | // which is either a block-level frame or a BRFrame, or some other kind of break |
| 10048 | // which stops the line. |
| 10049 | static nsContentAndOffset FindLineBreakingFrame(nsIFrame* aFrame, |
| 10050 | nsDirection aDirection) { |
| 10051 | nsContentAndOffset result; |
| 10052 | |
| 10053 | if (aFrame->IsGeneratedContentFrame()) { |
| 10054 | return result; |
| 10055 | } |
| 10056 | |
| 10057 | // Treat form controls and other replaced inline level elements as inline |
| 10058 | // leaves. |
| 10059 | if (aFrame->IsReplaced() && aFrame->IsInlineOutside() && |
| 10060 | !aFrame->IsBrFrame() && !aFrame->IsTextFrame()) { |
| 10061 | return result; |
| 10062 | } |
| 10063 | |
| 10064 | // Check the frame itself |
| 10065 | // Fall through block-in-inline split frames because their mContent is |
| 10066 | // the content of the inline frames they were created from. The |
| 10067 | // first/last child of such frames is the real block frame we're |
| 10068 | // looking for. |
| 10069 | if ((IsRelevantBlockFrame(aFrame) && |
| 10070 | !aFrame->HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)) || |
| 10071 | aFrame->IsBrFrame()) { |
| 10072 | nsIContent* content = aFrame->GetContent(); |
| 10073 | result.mContent = content->GetParent(); |
| 10074 | // In some cases (bug 310589, bug 370174) we end up here with a null |
| 10075 | // content. This probably shouldn't ever happen, but since it sometimes |
| 10076 | // does, we want to avoid crashing here. |
| 10077 | NS_ASSERTION(result.mContent, "Unexpected orphan content")do { if (!(result.mContent)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "Unexpected orphan content", "result.mContent", "./../../../layout/generic/nsIFrame.cpp" , 10077); MOZ_PretendNoReturn(); } } while (0); |
| 10078 | if (result.mContent) { |
| 10079 | result.mOffset = result.mContent->ComputeIndexOf_Deprecated(content) + |
| 10080 | (aDirection == eDirPrevious ? 1 : 0); |
| 10081 | } |
| 10082 | return result; |
| 10083 | } |
| 10084 | |
| 10085 | result = FindLineBreakInText(aFrame, aDirection); |
| 10086 | if (result.mContent) { |
| 10087 | return result; |
| 10088 | } |
| 10089 | |
| 10090 | // Iterate over children and call ourselves recursively |
| 10091 | if (aDirection == eDirPrevious) { |
| 10092 | nsIFrame* child = aFrame->PrincipalChildList().LastChild(); |
| 10093 | while (child && !result.mContent) { |
| 10094 | result = FindLineBreakingFrame(child, aDirection); |
| 10095 | child = child->GetPrevSibling(); |
| 10096 | } |
| 10097 | } else { // eDirNext |
| 10098 | nsIFrame* child = aFrame->PrincipalChildList().FirstChild(); |
| 10099 | while (child && !result.mContent) { |
| 10100 | result = FindLineBreakingFrame(child, aDirection); |
| 10101 | child = child->GetNextSibling(); |
| 10102 | } |
| 10103 | } |
| 10104 | return result; |
| 10105 | } |
| 10106 | |
| 10107 | enum class OffsetIsAtLineEdge : bool { No, Yes }; |
| 10108 | |
| 10109 | static void SetPeekResultFromFrame(PeekOffsetStruct& aPos, nsIFrame* aFrame, |
| 10110 | int32_t aOffset, |
| 10111 | OffsetIsAtLineEdge aAtLineEdge) { |
| 10112 | FrameContentRange range = GetRangeForFrame(aFrame); |
| 10113 | aPos.mResultFrame = aFrame; |
| 10114 | aPos.mResultContent = range.content; |
| 10115 | // Output offset is relative to content, not frame |
| 10116 | aPos.mContentOffset = |
| 10117 | aOffset < 0 ? range.end + aOffset + 1 : range.start + aOffset; |
| 10118 | // Ensure we don't go past the range. This is important if aFrame is empty. |
| 10119 | aPos.mContentOffset = std::clamp(aPos.mContentOffset, range.start, range.end); |
| 10120 | if (aAtLineEdge == OffsetIsAtLineEdge::Yes) { |
| 10121 | aPos.mAttach = aPos.mContentOffset == range.start |
| 10122 | ? CaretAssociationHint::After |
| 10123 | : CaretAssociationHint::Before; |
| 10124 | } |
| 10125 | } |
| 10126 | |
| 10127 | nsresult nsIFrame::PeekOffsetForParagraph(PeekOffsetStruct* aPos) { |
| 10128 | nsIFrame* frame = this; |
| 10129 | nsContentAndOffset blockFrameOrBR; |
| 10130 | blockFrameOrBR.mContent = nullptr; |
| 10131 | bool reachedLimit = IsRelevantBlockFrame(frame) || IsEditingHost(frame); |
| 10132 | |
| 10133 | auto traverse = [&aPos](nsIFrame* current) { |
| 10134 | return aPos->mDirection == eDirPrevious ? current->GetPrevSibling() |
| 10135 | : current->GetNextSibling(); |
| 10136 | }; |
| 10137 | |
| 10138 | // Go through containing frames until reaching a block frame. |
| 10139 | // In each step, search the previous (or next) siblings for the closest |
| 10140 | // "stop frame" (a block frame or a BRFrame). |
| 10141 | // If found, set it to be the selection boundary and abort. |
| 10142 | while (!reachedLimit) { |
| 10143 | nsIFrame* parent = frame->GetParent(); |
| 10144 | // Treat a frame associated with the root content as if it were a block |
| 10145 | // frame. |
| 10146 | if (!frame->mContent || !frame->mContent->GetParent()) { |
| 10147 | reachedLimit = true; |
| 10148 | break; |
| 10149 | } |
| 10150 | |
| 10151 | if (aPos->mDirection == eDirNext) { |
| 10152 | // Try to find our own line-break before looking at our siblings. |
| 10153 | blockFrameOrBR = FindLineBreakInText(frame, eDirNext); |
| 10154 | } |
| 10155 | |
| 10156 | nsIFrame* sibling = traverse(frame); |
| 10157 | while (sibling && !blockFrameOrBR.mContent) { |
| 10158 | blockFrameOrBR = FindLineBreakingFrame(sibling, aPos->mDirection); |
| 10159 | sibling = traverse(sibling); |
| 10160 | } |
| 10161 | if (blockFrameOrBR.mContent) { |
| 10162 | aPos->mResultContent = blockFrameOrBR.mContent; |
| 10163 | aPos->mContentOffset = blockFrameOrBR.mOffset; |
| 10164 | if (blockFrameOrBR.mIsTerminalNewlineInText) { |
| 10165 | // The boundary sits on the edge between the text frame ending with the |
| 10166 | // newline and the one starting the next line, and it belongs to the |
| 10167 | // latter. Associating the caret with the end of the preceding line |
| 10168 | // instead leaves a later logical character move with nothing to do: it |
| 10169 | // only re-associates the caret without advancing the offset. |
| 10170 | aPos->mAttach = CaretAssociationHint::After; |
| 10171 | } |
| 10172 | break; |
| 10173 | } |
| 10174 | frame = parent; |
| 10175 | reachedLimit = |
| 10176 | frame && (IsRelevantBlockFrame(frame) || IsEditingHost(frame)); |
| 10177 | } |
| 10178 | |
| 10179 | if (reachedLimit) { // no "stop frame" found |
| 10180 | if (aPos->mOptions.contains(PeekOffsetOption::ForCaretMove)) { |
| 10181 | // For a caret move, drill down to a leaf so scroll-into-view geometry, |
| 10182 | // which only uses text-frame offsets when the focus node is a Text node, |
| 10183 | // gets a usable position. Frame children include flattened-tree |
| 10184 | // descendants, so this also covers shadow-DOM content that the element |
| 10185 | // branch below reaches via GetShadowRootForSelection. |
| 10186 | const bool atEnd = aPos->mDirection == eDirNext; |
| 10187 | FrameTarget targetFrame = DrillDownToSelectionFrame( |
| 10188 | frame, atEnd, nsIFrame::IGNORE_NATIVE_ANONYMOUS_SUBTREE); |
| 10189 | SetPeekResultFromFrame(*aPos, targetFrame.frame, atEnd ? -1 : 0, |
| 10190 | OffsetIsAtLineEdge::Yes); |
| 10191 | } else { |
| 10192 | // For selection (e.g. triple-click paragraph selection), the block |
| 10193 | // container itself is the expected boundary. |
| 10194 | aPos->mResultContent = frame->GetContent(); |
| 10195 | if (aPos->mResultContent) { |
| 10196 | if (ShadowRoot* shadowRoot = |
| 10197 | aPos->mResultContent->GetShadowRootForSelection()) { |
| 10198 | // Even if there's no children for this node, |
| 10199 | // the elements inside the shadow root is still |
| 10200 | // selectable |
| 10201 | aPos->mResultContent = shadowRoot; |
| 10202 | } |
| 10203 | } |
| 10204 | if (aPos->mDirection == eDirPrevious) { |
| 10205 | aPos->mContentOffset = 0; |
| 10206 | } else if (aPos->mResultContent) { |
| 10207 | aPos->mContentOffset = aPos->mResultContent->GetChildCount(); |
| 10208 | } |
| 10209 | } |
| 10210 | } |
| 10211 | return NS_OK; |
| 10212 | } |
| 10213 | |
| 10214 | // Determine movement direction relative to frame |
| 10215 | static bool IsMovingInFrameDirection(const nsIFrame* frame, |
| 10216 | nsDirection aDirection, bool aVisual) { |
| 10217 | bool isReverseDirection = |
| 10218 | aVisual && nsBidiPresUtils::IsReversedDirectionFrame(frame); |
| 10219 | return aDirection == (isReverseDirection ? eDirPrevious : eDirNext); |
| 10220 | } |
| 10221 | |
| 10222 | // Determines "are we looking for a boundary between whitespace and |
| 10223 | // non-whitespace (in the direction we're moving in)". It is true when moving |
| 10224 | // forward and looking for a beginning of a word, or when moving backwards and |
| 10225 | // looking for an end of a word. |
| 10226 | static bool ShouldWordSelectionEatSpace(const PeekOffsetStruct& aPos) { |
| 10227 | if (aPos.mWordMovementType != eDefaultBehavior) { |
| 10228 | // aPos->mWordMovementType possible values: |
| 10229 | // eEndWord: eat the space if we're moving backwards |
| 10230 | // eStartWord: eat the space if we're moving forwards |
| 10231 | return (aPos.mWordMovementType == eEndWord) == |
| 10232 | (aPos.mDirection == eDirPrevious); |
| 10233 | } |
| 10234 | // Use the hidden preference which is based on operating system |
| 10235 | // behavior. This pref only affects whether moving forward by word |
| 10236 | // should go to the end of this word or start of the next word. When |
| 10237 | // going backwards, the start of the word is always used, on every |
| 10238 | // operating system. |
| 10239 | return aPos.mDirection == eDirNext && |
| 10240 | StaticPrefs::layout_word_select_eat_space_to_next_word(); |
| 10241 | } |
| 10242 | |
| 10243 | void nsIFrame::SelectablePeekReport::TransferTo(PeekOffsetStruct& aPos) const { |
| 10244 | return SetPeekResultFromFrame(aPos, mFrame, mOffset, OffsetIsAtLineEdge::No); |
| 10245 | } |
| 10246 | |
| 10247 | nsIFrame::SelectablePeekReport::SelectablePeekReport( |
| 10248 | const mozilla::GenericErrorResult<nsresult>&& aErr) { |
| 10249 | MOZ_ASSERT(NS_FAILED(aErr.operator nsresult()))do { static_assert( mozilla::detail::AssertionConditionType< decltype(((bool)(__builtin_expect(!!(NS_FAILED_impl(aErr.operator nsresult())), 0))))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(((bool)(__builtin_expect(!!( NS_FAILED_impl(aErr.operator nsresult())), 0)))))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("((bool)(__builtin_expect(!!(NS_FAILED_impl(aErr.operator nsresult())), 0)))" , "./../../../layout/generic/nsIFrame.cpp", 10249); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "((bool)(__builtin_expect(!!(NS_FAILED_impl(aErr.operator nsresult())), 0)))" ")"); do { MOZ_CrashSequence(__null, 10249); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10250 | // Return an empty report |
| 10251 | } |
| 10252 | |
| 10253 | nsresult nsIFrame::PeekOffsetForCharacter(PeekOffsetStruct* aPos, |
| 10254 | int32_t aOffset) { |
| 10255 | SelectablePeekReport current{this, aOffset}; |
| 10256 | |
| 10257 | nsIFrame::FrameSearchResult peekSearchState = CONTINUE; |
| 10258 | |
| 10259 | const bool forceEditableRegion = |
| 10260 | aPos->mOptions.contains(PeekOffsetOption::ForceEditableRegion); |
| 10261 | |
| 10262 | while (peekSearchState != FOUND) { |
| 10263 | const bool movingInFrameDirection = IsMovingInFrameDirection( |
| 10264 | current.mFrame, aPos->mDirection, |
| 10265 | aPos->mOptions.contains(PeekOffsetOption::Visual)); |
| 10266 | |
| 10267 | if (current.mJumpedLine) { |
| 10268 | // If we jumped lines, it's as if we found a character, but we still need |
| 10269 | // to eat non-renderable content on the new line. |
| 10270 | peekSearchState = current.PeekOffsetNoAmount(movingInFrameDirection); |
| 10271 | } else { |
| 10272 | PeekOffsetCharacterOptions options; |
| 10273 | options.mRespectClusters = aPos->mAmount == eSelectCluster; |
| 10274 | peekSearchState = |
| 10275 | current.PeekOffsetCharacter(movingInFrameDirection, options); |
| 10276 | if (peekSearchState == FOUND && forceEditableRegion && |
| 10277 | !current.mFrame->ContentIsEditable()) { |
| 10278 | // Treat non-editable content as unselectable. Note that we may need to |
| 10279 | // set mJumpedLine propery even if it's not editable. Therefore, we |
| 10280 | // cannot skip the above call. |
| 10281 | peekSearchState = CONTINUE_UNSELECTABLE; |
| 10282 | } |
| 10283 | } |
| 10284 | |
| 10285 | current.mMovedOverNonSelectableText |= |
| 10286 | peekSearchState == CONTINUE_UNSELECTABLE; |
| 10287 | |
| 10288 | if (peekSearchState != FOUND) { |
| 10289 | SelectablePeekReport next = current.mFrame->GetFrameFromDirection(*aPos); |
| 10290 | if (next.Failed()) { |
| 10291 | return NS_ERROR_FAILURE; |
| 10292 | } |
| 10293 | next.mJumpedLine |= current.mJumpedLine; |
| 10294 | next.mMovedOverNonSelectableText |= current.mMovedOverNonSelectableText; |
| 10295 | next.mHasSelectableFrame |= current.mHasSelectableFrame; |
| 10296 | current = next; |
| 10297 | } |
| 10298 | |
| 10299 | // Found frame, but because we moved over non selectable text we want |
| 10300 | // the offset to be at the frame edge. Note that if we are extending the |
| 10301 | // selection, this doesn't matter. |
| 10302 | if (peekSearchState == FOUND && current.mMovedOverNonSelectableText && |
| 10303 | (!aPos->mOptions.contains(PeekOffsetOption::Extend) || |
| 10304 | current.mHasSelectableFrame)) { |
| 10305 | auto [start, end] = current.mFrame->GetOffsets(); |
| 10306 | current.mOffset = aPos->mDirection == eDirNext ? 0 : end - start; |
| 10307 | } |
| 10308 | } |
| 10309 | |
| 10310 | // Set outputs |
| 10311 | current.TransferTo(*aPos); |
| 10312 | // If we're dealing with a text frame and moving backward positions us at |
| 10313 | // the end of that line, decrease the offset by one to make sure that |
| 10314 | // we're placed before the linefeed character on the previous line. |
| 10315 | if (current.mOffset < 0 && current.mJumpedLine && |
| 10316 | aPos->mDirection == eDirPrevious && |
| 10317 | current.mFrame->HasSignificantTerminalNewline() && |
| 10318 | !current.mIgnoredBrFrame) { |
| 10319 | --aPos->mContentOffset; |
| 10320 | } |
| 10321 | return NS_OK; |
| 10322 | } |
| 10323 | |
| 10324 | nsresult nsIFrame::PeekOffsetForWord(PeekOffsetStruct* aPos, int32_t aOffset) { |
| 10325 | SelectablePeekReport current{this, aOffset}; |
| 10326 | bool shouldStopAtHardBreak = |
| 10327 | aPos->mWordMovementType == eDefaultBehavior && |
| 10328 | StaticPrefs::layout_word_select_eat_space_to_next_word(); |
| 10329 | bool wordSelectEatSpace = ShouldWordSelectionEatSpace(*aPos); |
| 10330 | |
| 10331 | PeekWordState state; |
| 10332 | while (true) { |
| 10333 | bool movingInFrameDirection = IsMovingInFrameDirection( |
| 10334 | current.mFrame, aPos->mDirection, |
| 10335 | aPos->mOptions.contains(PeekOffsetOption::Visual)); |
| 10336 | |
| 10337 | FrameSearchResult searchResult = current.mFrame->PeekOffsetWord( |
| 10338 | movingInFrameDirection, wordSelectEatSpace, |
| 10339 | aPos->mOptions.contains(PeekOffsetOption::IsKeyboardSelect), |
| 10340 | ¤t.mOffset, &state, |
| 10341 | !aPos->mOptions.contains(PeekOffsetOption::PreserveSpaces)); |
| 10342 | if (searchResult == FOUND) { |
| 10343 | break; |
| 10344 | } |
| 10345 | |
| 10346 | SelectablePeekReport next = [&]() { |
| 10347 | PeekOffsetOptions options = aPos->mOptions; |
| 10348 | if (state.mSawInlineCharacter) { |
| 10349 | // If we've already found a character, we don't want to stop at |
| 10350 | // placeholder frame boundary if there is in the word. |
| 10351 | options += PeekOffsetOption::StopAtPlaceholder; |
| 10352 | } |
| 10353 | return current.mFrame->GetFrameFromDirection(aPos->mDirection, options, |
| 10354 | aPos->mAncestorLimiter); |
| 10355 | }(); |
| 10356 | if (next.Failed()) { |
| 10357 | // If we've crossed the line boundary, check to make sure that we |
| 10358 | // have not consumed a trailing newline as whitespace if it's |
| 10359 | // significant. |
| 10360 | if (next.mJumpedLine && wordSelectEatSpace && |
| 10361 | current.mFrame->HasSignificantTerminalNewline() && |
| 10362 | current.mFrame->StyleText()->mWhiteSpaceCollapse != |
| 10363 | StyleWhiteSpaceCollapse::PreserveBreaks) { |
| 10364 | current.mOffset -= 1; |
| 10365 | } |
| 10366 | break; |
| 10367 | } |
| 10368 | |
| 10369 | if ((next.mJumpedLine || next.mFoundPlaceholder) && !wordSelectEatSpace && |
| 10370 | state.mSawBeforeType) { |
| 10371 | // We can't jump lines if we're looking for whitespace following |
| 10372 | // non-whitespace, and we already encountered non-whitespace. |
| 10373 | break; |
| 10374 | } |
| 10375 | |
| 10376 | if (shouldStopAtHardBreak && next.mJumpedHardBreak) { |
| 10377 | /** |
| 10378 | * Prev, always: Jump and stop right there |
| 10379 | * Next, saw inline: just stop |
| 10380 | * Next, no inline: Jump and consume whitespaces |
| 10381 | */ |
| 10382 | if (aPos->mDirection == eDirPrevious) { |
| 10383 | // Try moving to the previous line if exists |
| 10384 | current.TransferTo(*aPos); |
| 10385 | current.mFrame->PeekOffsetForCharacter(aPos, current.mOffset); |
| 10386 | return NS_OK; |
| 10387 | } |
| 10388 | if (state.mSawInlineCharacter || current.mJumpedHardBreak) { |
| 10389 | if (current.mFrame->HasSignificantTerminalNewline()) { |
| 10390 | current.mOffset -= 1; |
| 10391 | } |
| 10392 | current.TransferTo(*aPos); |
| 10393 | return NS_OK; |
| 10394 | } |
| 10395 | // Mark the state as whitespace and continue |
| 10396 | state.Update(false, true); |
| 10397 | } |
| 10398 | |
| 10399 | if (next.mJumpedLine) { |
| 10400 | state.mContext.Truncate(); |
| 10401 | } |
| 10402 | current = next; |
| 10403 | // Jumping a line is equivalent to encountering whitespace |
| 10404 | // This affects only when it already met an actual character |
| 10405 | if (wordSelectEatSpace && next.mJumpedLine) { |
| 10406 | state.SetSawBeforeType(); |
| 10407 | } |
| 10408 | } |
| 10409 | |
| 10410 | // Set outputs |
| 10411 | current.TransferTo(*aPos); |
| 10412 | return NS_OK; |
| 10413 | } |
| 10414 | |
| 10415 | static nsIFrame* GetFirstSelectableDescendantWithLineIterator( |
| 10416 | const PeekOffsetStruct& aPeekOffsetStruct, nsIFrame* aParentFrame) { |
| 10417 | const bool forceEditableRegion = aPeekOffsetStruct.mOptions.contains( |
| 10418 | PeekOffsetOption::ForceEditableRegion); |
| 10419 | auto FoundValidFrame = [aPeekOffsetStruct, |
| 10420 | forceEditableRegion](const nsIFrame* aFrame) { |
| 10421 | if (!aFrame->IsSelectable()) { |
| 10422 | return false; |
| 10423 | } |
| 10424 | if (!aPeekOffsetStruct.FrameContentIsInAncestorLimiter(aFrame)) { |
| 10425 | return false; |
| 10426 | } |
| 10427 | if (forceEditableRegion && !aFrame->ContentIsEditable()) { |
| 10428 | return false; |
| 10429 | } |
| 10430 | return true; |
| 10431 | }; |
| 10432 | |
| 10433 | for (nsIFrame* child : aParentFrame->PrincipalChildList()) { |
| 10434 | // some children may not be selectable, e.g. :before / :after pseudoelements |
| 10435 | // content with user-select: none, or contenteditable="false" |
| 10436 | // we need to skip them |
| 10437 | if (child->CanProvideLineIterator() && FoundValidFrame(child)) { |
| 10438 | return child; |
| 10439 | } |
| 10440 | if (nsIFrame* nested = GetFirstSelectableDescendantWithLineIterator( |
| 10441 | aPeekOffsetStruct, child)) { |
| 10442 | return nested; |
| 10443 | } |
| 10444 | } |
| 10445 | return nullptr; |
| 10446 | } |
| 10447 | |
| 10448 | nsresult nsIFrame::PeekOffsetForLine(PeekOffsetStruct* aPos) { |
| 10449 | nsIFrame* blockFrame = this; |
| 10450 | nsresult result = NS_ERROR_FAILURE; |
| 10451 | |
| 10452 | // outer loop |
| 10453 | // moving to a next block when no more blocks are available in a subtree |
| 10454 | AutoAssertNoDomMutations guard; |
| 10455 | while (NS_FAILED(result)((bool)(__builtin_expect(!!(NS_FAILED_impl(result)), 0)))) { |
| 10456 | auto [newBlock, lineFrame] = blockFrame->GetContainingBlockForLine( |
| 10457 | aPos->mOptions.contains(PeekOffsetOption::StopAtScroller)); |
| 10458 | if (!newBlock) { |
| 10459 | return NS_ERROR_FAILURE; |
| 10460 | } |
| 10461 | // FYI: If the editing host is an inline element, the block frame content |
| 10462 | // may be either not editable or editable but belonging to different editing |
| 10463 | // host. |
| 10464 | blockFrame = newBlock; |
| 10465 | nsILineIterator* iter = blockFrame->GetLineIterator(); |
| 10466 | int32_t thisLine = iter->FindLineContaining(lineFrame); |
| 10467 | if (NS_WARN_IF(thisLine < 0)NS_warn_if_impl(thisLine < 0, "thisLine < 0", "./../../../layout/generic/nsIFrame.cpp" , 10467)) { |
| 10468 | return NS_ERROR_FAILURE; |
| 10469 | } |
| 10470 | |
| 10471 | int8_t edgeCase = 0; // no edge case. This should look at thisLine |
| 10472 | |
| 10473 | // this part will find a frame or a block frame. If it's a block frame |
| 10474 | // it will "drill down" to find a viable frame or it will return an |
| 10475 | // error. |
| 10476 | nsIFrame* lastFrame = this; |
| 10477 | |
| 10478 | // inner loop - crawling the frames within a specific block subtree |
| 10479 | while (true) { |
| 10480 | result = |
| 10481 | GetNextPrevLineFromBlockFrame(aPos, blockFrame, thisLine, edgeCase); |
| 10482 | // we came back to same spot! keep going |
| 10483 | if (NS_SUCCEEDED(result)((bool)(__builtin_expect(!!(!NS_FAILED_impl(result)), 1))) && |
| 10484 | (!aPos->mResultFrame || aPos->mResultFrame == lastFrame)) { |
| 10485 | aPos->mResultFrame = nullptr; |
| 10486 | lastFrame = nullptr; |
| 10487 | if (aPos->mDirection == eDirPrevious) { |
| 10488 | thisLine--; |
| 10489 | } else { |
| 10490 | thisLine++; |
| 10491 | } |
| 10492 | continue; |
| 10493 | } |
| 10494 | |
| 10495 | if (NS_FAILED(result)((bool)(__builtin_expect(!!(NS_FAILED_impl(result)), 0)))) { |
| 10496 | break; |
| 10497 | } |
| 10498 | |
| 10499 | lastFrame = aPos->mResultFrame; // set last frame |
| 10500 | /* SPECIAL CHECK FOR NAVIGATION INTO TABLES |
| 10501 | * when we hit a frame which doesn't have line iterator, we need to |
| 10502 | * drill down and find a child with the line iterator to prevent the |
| 10503 | * crawling process to prematurely finish. Note that this is only sound if |
| 10504 | * we're guaranteed to not have multiple children implementing |
| 10505 | * LineIterator. |
| 10506 | * |
| 10507 | * So far known cases are: |
| 10508 | * 1) table wrapper (drill down into table row group) |
| 10509 | * 2) table cell (drill down into its only anon child) |
| 10510 | */ |
| 10511 | const bool shouldDrillIntoChildren = |
| 10512 | aPos->mResultFrame->IsTableWrapperFrame() || |
| 10513 | aPos->mResultFrame->IsTableCellFrame(); |
| 10514 | |
| 10515 | if (shouldDrillIntoChildren) { |
| 10516 | nsIFrame* child = GetFirstSelectableDescendantWithLineIterator( |
| 10517 | *aPos, aPos->mResultFrame); |
| 10518 | if (child) { |
| 10519 | aPos->mResultFrame = child; |
| 10520 | } |
| 10521 | } |
| 10522 | |
| 10523 | if (!aPos->mResultFrame->CanProvideLineIterator()) { |
| 10524 | // no more selectable content at this level |
| 10525 | break; |
| 10526 | } |
| 10527 | |
| 10528 | if (aPos->mResultFrame == blockFrame) { |
| 10529 | // Make sure block element is not the same as the one we had before. |
| 10530 | break; |
| 10531 | } |
| 10532 | |
| 10533 | // we've struck another block element with selectable content! |
| 10534 | if (aPos->mDirection == eDirPrevious) { |
| 10535 | edgeCase = 1; // far edge, search from end backwards |
| 10536 | } else { |
| 10537 | edgeCase = -1; // near edge search from beginning onwards |
| 10538 | } |
| 10539 | thisLine = 0; // this line means nothing now. |
| 10540 | // everything else means something so keep looking "inside" the |
| 10541 | // block |
| 10542 | blockFrame = aPos->mResultFrame; |
| 10543 | } |
| 10544 | } |
| 10545 | return result; |
| 10546 | } |
| 10547 | |
| 10548 | nsresult nsIFrame::PeekOffsetForLineEdge(PeekOffsetStruct* aPos) { |
| 10549 | // Adjusted so that the caret can't get confused when content changes |
| 10550 | nsIFrame* frame = AdjustFrameForSelectionStyles(this); |
| 10551 | // FIXME: Use PeekOffsetStruct::mAncestorLimiter instead. |
| 10552 | Element* editingHost = frame->GetContent()->GetEditingHost(); |
| 10553 | |
| 10554 | auto [blockFrame, lineFrame] = frame->GetContainingBlockForLine( |
| 10555 | aPos->mOptions.contains(PeekOffsetOption::StopAtScroller)); |
| 10556 | if (!blockFrame) { |
| 10557 | return NS_ERROR_FAILURE; |
| 10558 | } |
| 10559 | AutoAssertNoDomMutations guard; |
| 10560 | nsILineIterator* it = blockFrame->GetLineIterator(); |
| 10561 | int32_t thisLine = it->FindLineContaining(lineFrame); |
| 10562 | if (thisLine < 0) { |
| 10563 | return NS_ERROR_FAILURE; |
| 10564 | } |
| 10565 | |
| 10566 | nsIFrame* baseFrame = nullptr; |
| 10567 | bool endOfLine = eSelectEndLine == aPos->mAmount; |
| 10568 | |
| 10569 | if (aPos->mOptions.contains(PeekOffsetOption::Visual) && |
| 10570 | PresContext()->BidiEnabled()) { |
| 10571 | nsIFrame* firstFrame; |
| 10572 | bool isReordered; |
| 10573 | nsIFrame* lastFrame; |
| 10574 | MOZ_TRY(__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult (it->CheckLineOrder(thisLine, &isReordered, &firstFrame , &lastFrame)); if ((__builtin_expect(!!(mozTryVarTempResult .isErr()), 0))) { return mozTryVarTempResult.propagateErr(); } mozTryVarTempResult.unwrap(); }) |
| 10575 | it->CheckLineOrder(thisLine, &isReordered, &firstFrame, &lastFrame))__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult (it->CheckLineOrder(thisLine, &isReordered, &firstFrame , &lastFrame)); if ((__builtin_expect(!!(mozTryVarTempResult .isErr()), 0))) { return mozTryVarTempResult.propagateErr(); } mozTryVarTempResult.unwrap(); }); |
| 10576 | baseFrame = endOfLine ? lastFrame : firstFrame; |
| 10577 | } else { |
| 10578 | auto line = it->GetLine(thisLine).unwrap(); |
| 10579 | |
| 10580 | nsIFrame* frame = line.mFirstFrameOnLine; |
| 10581 | bool lastFrameWasEditable = false; |
| 10582 | for (int32_t count = line.mNumFramesOnLine; count; |
| 10583 | --count, frame = frame->GetNextSibling()) { |
| 10584 | if (frame->IsGeneratedContentFrame()) { |
| 10585 | continue; |
| 10586 | } |
| 10587 | // When jumping to the end of the line with the "end" key, |
| 10588 | // try to skip over brFrames |
| 10589 | if (endOfLine && line.mNumFramesOnLine > 1 && frame->IsBrFrame() && |
| 10590 | lastFrameWasEditable == frame->GetContent()->IsEditable()) { |
| 10591 | continue; |
| 10592 | } |
| 10593 | lastFrameWasEditable = |
| 10594 | frame->GetContent() && frame->GetContent()->IsEditable(); |
| 10595 | baseFrame = frame; |
| 10596 | if (!endOfLine) { |
| 10597 | break; |
| 10598 | } |
| 10599 | } |
| 10600 | } |
| 10601 | if (!baseFrame) { |
| 10602 | return NS_ERROR_FAILURE; |
| 10603 | } |
| 10604 | // Make sure we are not leaving our inline editing host if exists |
| 10605 | if (editingHost) { |
| 10606 | if (nsIFrame* frame = editingHost->GetPrimaryFrame()) { |
| 10607 | if (frame->IsInlineOutside() && |
| 10608 | !editingHost->Contains(baseFrame->GetContent())) { |
| 10609 | baseFrame = frame; |
| 10610 | if (endOfLine) { |
| 10611 | baseFrame = baseFrame->LastContinuation(); |
| 10612 | } |
| 10613 | } |
| 10614 | } |
| 10615 | } |
| 10616 | FrameTarget targetFrame = DrillDownToSelectionFrame( |
| 10617 | baseFrame, endOfLine, nsIFrame::IGNORE_NATIVE_ANONYMOUS_SUBTREE); |
| 10618 | SetPeekResultFromFrame(*aPos, targetFrame.frame, endOfLine ? -1 : 0, |
| 10619 | OffsetIsAtLineEdge::Yes); |
| 10620 | if (endOfLine && targetFrame.frame->HasSignificantTerminalNewline()) { |
| 10621 | // Do not position the caret after the terminating newline if we're |
| 10622 | // trying to move to the end of line (see bug 596506) |
| 10623 | --aPos->mContentOffset; |
| 10624 | } |
| 10625 | if (!aPos->mResultContent) { |
| 10626 | return NS_ERROR_FAILURE; |
| 10627 | } |
| 10628 | return NS_OK; |
| 10629 | } |
| 10630 | |
| 10631 | nsresult nsIFrame::PeekOffset(PeekOffsetStruct* aPos) { |
| 10632 | MOZ_ASSERT(aPos)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aPos)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(aPos))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("aPos", "./../../../layout/generic/nsIFrame.cpp" , 10632); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPos" ")") ; do { MOZ_CrashSequence(__null, 10632); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 10633 | |
| 10634 | if (NS_WARN_IF(HasAnyStateBits(NS_FRAME_IS_DIRTY))NS_warn_if_impl(HasAnyStateBits(NS_FRAME_IS_DIRTY), "HasAnyStateBits(NS_FRAME_IS_DIRTY)" , "./../../../layout/generic/nsIFrame.cpp", 10634)) { |
| 10635 | // FIXME(Bug 1654362): <caption> currently can remain dirty. |
| 10636 | return NS_ERROR_UNEXPECTED; |
| 10637 | } |
| 10638 | |
| 10639 | // Translate content offset to be relative to frame |
| 10640 | int32_t offset = aPos->mStartOffset - GetRangeForFrame(this).start; |
| 10641 | |
| 10642 | switch (aPos->mAmount) { |
| 10643 | case eSelectCharacter: |
| 10644 | case eSelectCluster: |
| 10645 | return PeekOffsetForCharacter(aPos, offset); |
| 10646 | case eSelectWordNoSpace: |
| 10647 | // eSelectWordNoSpace means that we should not be eating any whitespace |
| 10648 | // when moving to the adjacent word. This means that we should set aPos-> |
| 10649 | // mWordMovementType to eEndWord if we're moving forwards, and to |
| 10650 | // eStartWord if we're moving backwards. |
| 10651 | if (aPos->mDirection == eDirPrevious) { |
| 10652 | aPos->mWordMovementType = eStartWord; |
| 10653 | } else { |
| 10654 | aPos->mWordMovementType = eEndWord; |
| 10655 | } |
| 10656 | // Intentionally fall through the eSelectWord case. |
| 10657 | [[fallthrough]]; |
| 10658 | case eSelectWord: |
| 10659 | return PeekOffsetForWord(aPos, offset); |
| 10660 | case eSelectLine: |
| 10661 | return PeekOffsetForLine(aPos); |
| 10662 | case eSelectBeginLine: |
| 10663 | case eSelectEndLine: |
| 10664 | return PeekOffsetForLineEdge(aPos); |
| 10665 | case eSelectParagraph: |
| 10666 | return PeekOffsetForParagraph(aPos); |
| 10667 | default: { |
| 10668 | NS_ASSERTION(false, "Invalid amount")do { if (!(false)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Invalid amount" , "false", "./../../../layout/generic/nsIFrame.cpp", 10668); MOZ_PretendNoReturn (); } } while (0); |
| 10669 | return NS_ERROR_FAILURE; |
| 10670 | } |
| 10671 | } |
| 10672 | } |
| 10673 | |
| 10674 | nsIFrame::FrameSearchResult nsIFrame::PeekOffsetNoAmount(bool aForward, |
| 10675 | int32_t* aOffset) { |
| 10676 | NS_ASSERTION(aOffset && *aOffset <= 1, "aOffset out of range")do { if (!(aOffset && *aOffset <= 1)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "aOffset out of range", "aOffset && *aOffset <= 1" , "./../../../layout/generic/nsIFrame.cpp", 10676); MOZ_PretendNoReturn (); } } while (0); |
| 10677 | // Sure, we can stop right here. |
| 10678 | return FOUND; |
| 10679 | } |
| 10680 | |
| 10681 | nsIFrame::FrameSearchResult nsIFrame::PeekOffsetCharacter( |
| 10682 | bool aForward, int32_t* aOffset, PeekOffsetCharacterOptions aOptions) { |
| 10683 | NS_ASSERTION(aOffset && *aOffset <= 1, "aOffset out of range")do { if (!(aOffset && *aOffset <= 1)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "aOffset out of range", "aOffset && *aOffset <= 1" , "./../../../layout/generic/nsIFrame.cpp", 10683); MOZ_PretendNoReturn (); } } while (0); |
| 10684 | int32_t startOffset = *aOffset; |
| 10685 | // A negative offset means "end of frame", which in our case means offset 1. |
| 10686 | if (startOffset < 0) { |
| 10687 | startOffset = 1; |
| 10688 | } |
| 10689 | if (aForward == (startOffset == 0)) { |
| 10690 | // We're before the frame and moving forward, or after it and moving |
| 10691 | // backwards: skip to the other side and we're done. |
| 10692 | *aOffset = 1 - startOffset; |
| 10693 | return FOUND; |
| 10694 | } |
| 10695 | return CONTINUE; |
| 10696 | } |
| 10697 | |
| 10698 | nsIFrame::FrameSearchResult nsIFrame::PeekOffsetWord( |
| 10699 | bool aForward, bool aWordSelectEatSpace, bool aIsKeyboardSelect, |
| 10700 | int32_t* aOffset, PeekWordState* aState, bool /*aTrimSpaces*/) { |
| 10701 | NS_ASSERTION(aOffset && *aOffset <= 1, "aOffset out of range")do { if (!(aOffset && *aOffset <= 1)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "aOffset out of range", "aOffset && *aOffset <= 1" , "./../../../layout/generic/nsIFrame.cpp", 10701); MOZ_PretendNoReturn (); } } while (0); |
| 10702 | int32_t startOffset = *aOffset; |
| 10703 | // This isn't text, so truncate the context |
| 10704 | aState->mContext.Truncate(); |
| 10705 | if (startOffset < 0) { |
| 10706 | startOffset = 1; |
| 10707 | } |
| 10708 | if (aForward == (startOffset == 0)) { |
| 10709 | // We're before the frame and moving forward, or after it and moving |
| 10710 | // backwards. If we're looking for non-whitespace, we found it (without |
| 10711 | // skipping this frame). |
| 10712 | if (!aState->mAtStart) { |
| 10713 | if (aState->mLastCharWasPunctuation) { |
| 10714 | // We're not punctuation, so this is a punctuation boundary. |
| 10715 | if (BreakWordBetweenPunctuation(aState, aForward, false, false, |
| 10716 | aIsKeyboardSelect)) { |
| 10717 | return FOUND; |
| 10718 | } |
| 10719 | } else { |
| 10720 | // This is not a punctuation boundary. |
| 10721 | if (aWordSelectEatSpace && aState->mSawBeforeType) { |
| 10722 | return FOUND; |
| 10723 | } |
| 10724 | } |
| 10725 | } |
| 10726 | // Otherwise skip to the other side and note that we encountered |
| 10727 | // non-whitespace. |
| 10728 | *aOffset = 1 - startOffset; |
| 10729 | aState->Update(false, // not punctuation |
| 10730 | false // not whitespace |
| 10731 | ); |
| 10732 | if (!aWordSelectEatSpace) { |
| 10733 | aState->SetSawBeforeType(); |
| 10734 | } |
| 10735 | } |
| 10736 | return CONTINUE; |
| 10737 | } |
| 10738 | |
| 10739 | // static |
| 10740 | bool nsIFrame::BreakWordBetweenPunctuation(const PeekWordState* aState, |
| 10741 | bool aForward, bool aPunctAfter, |
| 10742 | bool aWhitespaceAfter, |
| 10743 | bool aIsKeyboardSelect) { |
| 10744 | NS_ASSERTION(aPunctAfter != aState->mLastCharWasPunctuation,do { if (!(aPunctAfter != aState->mLastCharWasPunctuation) ) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Call this only at punctuation boundaries" , "aPunctAfter != aState->mLastCharWasPunctuation", "./../../../layout/generic/nsIFrame.cpp" , 10745); MOZ_PretendNoReturn(); } } while (0) |
| 10745 | "Call this only at punctuation boundaries")do { if (!(aPunctAfter != aState->mLastCharWasPunctuation) ) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Call this only at punctuation boundaries" , "aPunctAfter != aState->mLastCharWasPunctuation", "./../../../layout/generic/nsIFrame.cpp" , 10745); MOZ_PretendNoReturn(); } } while (0); |
| 10746 | if (aState->mLastCharWasWhitespace) { |
| 10747 | // We always stop between whitespace and punctuation |
| 10748 | return true; |
| 10749 | } |
| 10750 | if (!StaticPrefs::layout_word_select_stop_at_punctuation()) { |
| 10751 | // When this pref is false, we never stop at a punctuation boundary unless |
| 10752 | // it's followed by whitespace (in the relevant direction). |
| 10753 | return aWhitespaceAfter; |
| 10754 | } |
| 10755 | if (!aIsKeyboardSelect) { |
| 10756 | // mouse caret movement (e.g. word selection) always stops at every |
| 10757 | // punctuation boundary |
| 10758 | return true; |
| 10759 | } |
| 10760 | bool afterPunct = aForward ? aState->mLastCharWasPunctuation : aPunctAfter; |
| 10761 | if (!afterPunct) { |
| 10762 | // keyboard caret movement only stops after punctuation (in content order) |
| 10763 | return false; |
| 10764 | } |
| 10765 | // Stop only if we've seen some non-punctuation since the last whitespace; |
| 10766 | // don't stop after punctuation that follows whitespace. |
| 10767 | return aState->mSeenNonPunctuationSinceWhitespace; |
| 10768 | } |
| 10769 | |
| 10770 | std::pair<nsIFrame*, nsIFrame*> nsIFrame::GetContainingBlockForLine( |
| 10771 | bool aLockScroll) const { |
| 10772 | const nsIFrame* parentFrame = this; |
| 10773 | const nsIFrame* frame; |
| 10774 | while (parentFrame) { |
| 10775 | frame = parentFrame; |
| 10776 | if (frame->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW)) { |
| 10777 | // if we are searching for a frame that is not in flow we will not find |
| 10778 | // it. we must instead look for its placeholder |
| 10779 | if (frame->HasAnyStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER)) { |
| 10780 | // abspos continuations don't have placeholders, get the fif |
| 10781 | frame = frame->FirstInFlow(); |
| 10782 | } |
| 10783 | frame = frame->GetPlaceholderFrame(); |
| 10784 | if (!frame) { |
| 10785 | return std::pair(nullptr, nullptr); |
| 10786 | } |
| 10787 | } |
| 10788 | parentFrame = frame->GetParent(); |
| 10789 | if (parentFrame) { |
| 10790 | if (aLockScroll && parentFrame->IsScrollContainerFrame()) { |
| 10791 | return std::pair(nullptr, nullptr); |
| 10792 | } |
| 10793 | if (parentFrame->CanProvideLineIterator()) { |
| 10794 | return std::pair(const_cast<nsIFrame*>(parentFrame), |
| 10795 | const_cast<nsIFrame*>(frame)); |
| 10796 | } |
| 10797 | } |
| 10798 | } |
| 10799 | return std::pair(nullptr, nullptr); |
| 10800 | } |
| 10801 | |
| 10802 | Result<bool, nsresult> nsIFrame::IsVisuallyAtLineEdge( |
| 10803 | nsILineIterator* aLineIterator, int32_t aLine, nsDirection aDirection) { |
| 10804 | auto line = aLineIterator->GetLine(aLine).unwrap(); |
| 10805 | |
| 10806 | const bool lineIsRTL = aLineIterator->IsLineIteratorFlowRTL(); |
| 10807 | |
| 10808 | nsIFrame *firstFrame = nullptr, *lastFrame = nullptr; |
| 10809 | bool isReordered = false; |
| 10810 | MOZ_TRY(aLineIterator->CheckLineOrder(aLine, &isReordered, &firstFrame,__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult (aLineIterator->CheckLineOrder(aLine, &isReordered, & firstFrame, &lastFrame)); if ((__builtin_expect(!!(mozTryVarTempResult .isErr()), 0))) { return mozTryVarTempResult.propagateErr(); } mozTryVarTempResult.unwrap(); }) |
| 10811 | &lastFrame))__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult (aLineIterator->CheckLineOrder(aLine, &isReordered, & firstFrame, &lastFrame)); if ((__builtin_expect(!!(mozTryVarTempResult .isErr()), 0))) { return mozTryVarTempResult.propagateErr(); } mozTryVarTempResult.unwrap(); }); |
| 10812 | if (!firstFrame || !lastFrame) { |
| 10813 | return true; // XXX: Why true? We check whether `this` is at the edge... |
| 10814 | } |
| 10815 | |
| 10816 | nsIFrame* leftmostFrame = lineIsRTL ? lastFrame : firstFrame; |
| 10817 | nsIFrame* rightmostFrame = lineIsRTL ? firstFrame : lastFrame; |
| 10818 | auto FrameIsRTL = [](nsIFrame* aFrame) { |
| 10819 | return nsBidiPresUtils::FrameDirection(aFrame) == |
| 10820 | mozilla::intl::BidiDirection::RTL; |
| 10821 | }; |
| 10822 | if (!lineIsRTL == (aDirection == eDirPrevious)) { |
| 10823 | nsIFrame* maybeLeftmostFrame = leftmostFrame; |
| 10824 | for ([[maybe_unused]] int32_t i : IntegerRange(line.mNumFramesOnLine)) { |
| 10825 | if (maybeLeftmostFrame == this) { |
| 10826 | return true; |
| 10827 | } |
| 10828 | // If left edge of the line starts with placeholder frames, we can ignore |
| 10829 | // them and should keep checking the following frames. |
| 10830 | if (!maybeLeftmostFrame->IsPlaceholderFrame()) { |
| 10831 | if ((FrameIsRTL(maybeLeftmostFrame) == lineIsRTL) == |
| 10832 | (aDirection == eDirPrevious)) { |
| 10833 | nsIFrame::GetFirstLeaf(&maybeLeftmostFrame); |
| 10834 | } else { |
| 10835 | nsIFrame::GetLastLeaf(&maybeLeftmostFrame); |
| 10836 | } |
| 10837 | return maybeLeftmostFrame == this; |
| 10838 | } |
| 10839 | maybeLeftmostFrame = nsBidiPresUtils::GetFrameToRightOf( |
| 10840 | maybeLeftmostFrame, line.mFirstFrameOnLine, line.mNumFramesOnLine); |
| 10841 | if (!maybeLeftmostFrame) { |
| 10842 | return false; |
| 10843 | } |
| 10844 | } |
| 10845 | return false; |
| 10846 | } |
| 10847 | |
| 10848 | nsIFrame* maybeRightmostFrame = rightmostFrame; |
| 10849 | for ([[maybe_unused]] int32_t i : IntegerRange(line.mNumFramesOnLine)) { |
| 10850 | if (maybeRightmostFrame == this) { |
| 10851 | return true; |
| 10852 | } |
| 10853 | // If the line ends with placehlder frames, we can ignore them and should |
| 10854 | // keep checking the preceding frames. |
| 10855 | if (!maybeRightmostFrame->IsPlaceholderFrame()) { |
| 10856 | if ((FrameIsRTL(maybeRightmostFrame) == lineIsRTL) == |
| 10857 | (aDirection == eDirPrevious)) { |
| 10858 | nsIFrame::GetFirstLeaf(&maybeRightmostFrame); |
| 10859 | } else { |
| 10860 | nsIFrame::GetLastLeaf(&maybeRightmostFrame); |
| 10861 | } |
| 10862 | return maybeRightmostFrame == this; |
| 10863 | } |
| 10864 | maybeRightmostFrame = nsBidiPresUtils::GetFrameToLeftOf( |
| 10865 | maybeRightmostFrame, line.mFirstFrameOnLine, line.mNumFramesOnLine); |
| 10866 | if (!maybeRightmostFrame) { |
| 10867 | return false; |
| 10868 | } |
| 10869 | } |
| 10870 | return false; |
| 10871 | } |
| 10872 | |
| 10873 | Result<bool, nsresult> nsIFrame::IsLogicallyAtLineEdge( |
| 10874 | nsILineIterator* aLineIterator, int32_t aLine, nsDirection aDirection) { |
| 10875 | auto line = aLineIterator->GetLine(aLine).unwrap(); |
| 10876 | if (!line.mNumFramesOnLine) { |
| 10877 | return false; |
| 10878 | } |
| 10879 | MOZ_ASSERT(line.mFirstFrameOnLine)do { static_assert( mozilla::detail::AssertionConditionType< decltype(line.mFirstFrameOnLine)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(line.mFirstFrameOnLine))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("line.mFirstFrameOnLine" , "./../../../layout/generic/nsIFrame.cpp", 10879); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "line.mFirstFrameOnLine" ")"); do { MOZ_CrashSequence (__null, 10879); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 10880 | |
| 10881 | if (aDirection == eDirPrevious) { |
| 10882 | nsIFrame* maybeFirstFrame = line.mFirstFrameOnLine; |
| 10883 | for ([[maybe_unused]] int32_t i : IntegerRange(line.mNumFramesOnLine)) { |
| 10884 | if (maybeFirstFrame == this) { |
| 10885 | return true; |
| 10886 | } |
| 10887 | // If the line starts with placeholder frames, we can ignore them and |
| 10888 | // should keep checking the following frames. |
| 10889 | if (!maybeFirstFrame->IsPlaceholderFrame()) { |
| 10890 | nsIFrame::GetFirstLeaf(&maybeFirstFrame); |
| 10891 | return maybeFirstFrame == this; |
| 10892 | } |
| 10893 | maybeFirstFrame = maybeFirstFrame->GetNextSibling(); |
| 10894 | if (!maybeFirstFrame) { |
| 10895 | return false; |
| 10896 | } |
| 10897 | } |
| 10898 | return false; |
| 10899 | } |
| 10900 | |
| 10901 | // eDirNext |
| 10902 | nsIFrame* maybeLastFrame = line.GetLastFrameOnLine(); |
| 10903 | for ([[maybe_unused]] int32_t i : IntegerRange(line.mNumFramesOnLine)) { |
| 10904 | if (maybeLastFrame == this) { |
| 10905 | return true; |
| 10906 | } |
| 10907 | // If the line ends with placehlder frames, we can ignore them and should |
| 10908 | // keep checking the preceding frames. |
| 10909 | if (!maybeLastFrame->IsPlaceholderFrame()) { |
| 10910 | nsIFrame::GetLastLeaf(&maybeLastFrame); |
| 10911 | return maybeLastFrame == this; |
| 10912 | } |
| 10913 | maybeLastFrame = maybeLastFrame->GetPrevSibling(); |
| 10914 | } |
| 10915 | return false; |
| 10916 | } |
| 10917 | |
| 10918 | nsIFrame::SelectablePeekReport nsIFrame::GetFrameFromDirection( |
| 10919 | nsDirection aDirection, const PeekOffsetOptions& aOptions, |
| 10920 | const Element* aAncestorLimiter) { |
| 10921 | SelectablePeekReport result; |
| 10922 | |
| 10923 | nsPresContext* presContext = PresContext(); |
| 10924 | const bool needsVisualTraversal = |
| 10925 | aOptions.contains(PeekOffsetOption::Visual) && presContext->BidiEnabled(); |
| 10926 | const bool followOofs = |
| 10927 | !aOptions.contains(PeekOffsetOption::StopAtPlaceholder); |
| 10928 | nsFrameIterator frameIterator( |
| 10929 | presContext, this, nsFrameIterator::Type::Leaf, needsVisualTraversal, |
| 10930 | aOptions.contains(PeekOffsetOption::StopAtScroller), followOofs, |
| 10931 | false, // aSkipPopupChecks |
| 10932 | aAncestorLimiter); |
| 10933 | |
| 10934 | // Find the prev/next selectable frame |
| 10935 | bool selectable = false; |
| 10936 | nsIFrame* traversedFrame = this; |
| 10937 | AutoAssertNoDomMutations guard; |
| 10938 | const nsFrameSelection* frameSelection = |
| 10939 | GetContent() ? GetContent()->GetFrameSelection() : nullptr; |
| 10940 | while (!selectable) { |
| 10941 | auto [blockFrame, lineFrame] = traversedFrame->GetContainingBlockForLine( |
| 10942 | aOptions.contains(PeekOffsetOption::StopAtScroller)); |
| 10943 | if (!blockFrame) { |
| 10944 | return result; |
| 10945 | } |
| 10946 | |
| 10947 | nsILineIterator* it = blockFrame->GetLineIterator(); |
| 10948 | int32_t thisLine = it->FindLineContaining(lineFrame); |
| 10949 | if (thisLine < 0) { |
| 10950 | return result; |
| 10951 | } |
| 10952 | |
| 10953 | bool atLineEdge = MOZ_TRY(__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult (needsVisualTraversal ? traversedFrame->IsVisuallyAtLineEdge (it, thisLine, aDirection) : traversedFrame->IsLogicallyAtLineEdge (it, thisLine, aDirection)); if ((__builtin_expect(!!(mozTryVarTempResult .isErr()), 0))) { return mozTryVarTempResult.propagateErr(); } mozTryVarTempResult.unwrap(); }) |
| 10954 | needsVisualTraversal__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult (needsVisualTraversal ? traversedFrame->IsVisuallyAtLineEdge (it, thisLine, aDirection) : traversedFrame->IsLogicallyAtLineEdge (it, thisLine, aDirection)); if ((__builtin_expect(!!(mozTryVarTempResult .isErr()), 0))) { return mozTryVarTempResult.propagateErr(); } mozTryVarTempResult.unwrap(); }) |
| 10955 | ? traversedFrame->IsVisuallyAtLineEdge(it, thisLine, aDirection)__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult (needsVisualTraversal ? traversedFrame->IsVisuallyAtLineEdge (it, thisLine, aDirection) : traversedFrame->IsLogicallyAtLineEdge (it, thisLine, aDirection)); if ((__builtin_expect(!!(mozTryVarTempResult .isErr()), 0))) { return mozTryVarTempResult.propagateErr(); } mozTryVarTempResult.unwrap(); }) |
| 10956 | : traversedFrame->IsLogicallyAtLineEdge(it, thisLine, aDirection))__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult (needsVisualTraversal ? traversedFrame->IsVisuallyAtLineEdge (it, thisLine, aDirection) : traversedFrame->IsLogicallyAtLineEdge (it, thisLine, aDirection)); if ((__builtin_expect(!!(mozTryVarTempResult .isErr()), 0))) { return mozTryVarTempResult.propagateErr(); } mozTryVarTempResult.unwrap(); }); |
| 10957 | if (atLineEdge) { |
| 10958 | result.mJumpedLine = true; |
| 10959 | if (!aOptions.contains(PeekOffsetOption::JumpLines)) { |
| 10960 | return result; // we are done. cannot jump lines |
| 10961 | } |
| 10962 | int32_t lineToCheckWrap = |
| 10963 | aDirection == eDirPrevious ? thisLine - 1 : thisLine; |
| 10964 | if (lineToCheckWrap < 0 || |
| 10965 | !it->GetLine(lineToCheckWrap).unwrap().mIsWrapped) { |
| 10966 | result.mJumpedHardBreak = true; |
| 10967 | } |
| 10968 | } |
| 10969 | |
| 10970 | traversedFrame = frameIterator.Traverse(aDirection == eDirNext); |
| 10971 | if (!traversedFrame) { |
| 10972 | return result; |
| 10973 | } |
| 10974 | |
| 10975 | if (aOptions.contains(PeekOffsetOption::StopAtPlaceholder) && |
| 10976 | traversedFrame->IsPlaceholderFrame()) { |
| 10977 | // XXX If the placeholder frame does not have meaningful content, the user |
| 10978 | // may want to select as a word around the out-of-flow cotent. However, |
| 10979 | // non-text frame resets context in nsIFrame::PeekOffsetWord(). Therefore, |
| 10980 | // next text frame considers the new word starts from its edge. So, it's |
| 10981 | // not enough to implement such behavior with adding a check here whether |
| 10982 | // the real frame may change the word with its contents if it were not |
| 10983 | // out-of-flow. |
| 10984 | result.mFoundPlaceholder = true; |
| 10985 | return result; |
| 10986 | } |
| 10987 | |
| 10988 | auto IsSelectableFrame = [aAncestorLimiter, aOptions, |
| 10989 | frameSelection](const nsIFrame* aFrame) { |
| 10990 | if (!aFrame->IsSelectable() || MOZ_UNLIKELY(!aFrame->GetContent())(__builtin_expect(!!(!aFrame->GetContent()), 0))) { |
| 10991 | return false; |
| 10992 | } |
| 10993 | // If the found frame content is managed by different nsFrameSelection, we |
| 10994 | // cannot select the frame content with current selection. |
| 10995 | if (frameSelection != aFrame->GetContent()->GetFrameSelection()) { |
| 10996 | return false; |
| 10997 | } |
| 10998 | if (MOZ_UNLIKELY(aAncestorLimiter &&(__builtin_expect(!!(aAncestorLimiter && !aAncestorLimiter ->GetPrimaryFrame()), 0)) |
| 10999 | !aAncestorLimiter->GetPrimaryFrame())(__builtin_expect(!!(aAncestorLimiter && !aAncestorLimiter ->GetPrimaryFrame()), 0)) && |
| 11000 | !aFrame->GetContent()->IsInclusiveFlatTreeDescendantOf( |
| 11001 | aAncestorLimiter)) { |
| 11002 | return false; |
| 11003 | } |
| 11004 | return !aOptions.contains(PeekOffsetOption::ForceEditableRegion) || |
| 11005 | aFrame->GetContent()->IsEditable(); |
| 11006 | }; |
| 11007 | |
| 11008 | // Skip br frames, but only if we can select something before hitting the |
| 11009 | // end of the line or a non-selectable region. |
| 11010 | if (atLineEdge && aDirection == eDirPrevious && |
| 11011 | traversedFrame->IsBrFrame()) { |
| 11012 | for (nsIFrame* current = traversedFrame->GetPrevSibling(); current; |
| 11013 | current = current->GetPrevSibling()) { |
| 11014 | if (!current->IsBlockOutside() && IsSelectableFrame(current)) { |
| 11015 | if (!current->IsBrFrame()) { |
| 11016 | result.mIgnoredBrFrame = true; |
| 11017 | } |
| 11018 | break; |
| 11019 | } |
| 11020 | } |
| 11021 | if (result.mIgnoredBrFrame) { |
| 11022 | continue; |
| 11023 | } |
| 11024 | } |
| 11025 | |
| 11026 | selectable = IsSelectableFrame(traversedFrame); |
| 11027 | if (MOZ_UNLIKELY(!frameSelection)(__builtin_expect(!!(!frameSelection), 0)) && selectable && |
| 11028 | MOZ_LIKELY(traversedFrame->GetContent())(__builtin_expect(!!(traversedFrame->GetContent()), 1))) { |
| 11029 | frameSelection = traversedFrame->GetContent()->GetFrameSelection(); |
| 11030 | } |
| 11031 | if (!selectable) { |
| 11032 | if (traversedFrame->IsSelectable()) { |
| 11033 | result.mHasSelectableFrame = true; |
| 11034 | } |
| 11035 | result.mMovedOverNonSelectableText = true; |
| 11036 | } |
| 11037 | } // while (!selectable) |
| 11038 | |
| 11039 | result.mOffset = (aDirection == eDirNext) ? 0 : -1; |
| 11040 | |
| 11041 | if (aOptions.contains(PeekOffsetOption::Visual) && |
| 11042 | nsBidiPresUtils::IsReversedDirectionFrame(traversedFrame)) { |
| 11043 | // The new frame is reverse-direction, go to the other end |
| 11044 | result.mOffset = -1 - result.mOffset; |
| 11045 | } |
| 11046 | result.mFrame = traversedFrame; |
| 11047 | return result; |
| 11048 | } |
| 11049 | |
| 11050 | nsIFrame::SelectablePeekReport nsIFrame::GetFrameFromDirection( |
| 11051 | const PeekOffsetStruct& aPos) { |
| 11052 | return GetFrameFromDirection(aPos.mDirection, aPos.mOptions, |
| 11053 | aPos.mAncestorLimiter); |
| 11054 | } |
| 11055 | |
| 11056 | /* virtual */ |
| 11057 | void nsIFrame::ChildIsDirty(nsIFrame* aChild) { |
| 11058 | MOZ_ASSERT_UNREACHABLE(do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "should never be called on a frame that doesn't " "inherit from nsContainerFrame" ")", "./../../../layout/generic/nsIFrame.cpp", 11060); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "should never be called on a frame that doesn't " "inherit from nsContainerFrame" ")"); do { MOZ_CrashSequence (__null, 11060); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 11059 | "should never be called on a frame that doesn't "do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "should never be called on a frame that doesn't " "inherit from nsContainerFrame" ")", "./../../../layout/generic/nsIFrame.cpp", 11060); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "should never be called on a frame that doesn't " "inherit from nsContainerFrame" ")"); do { MOZ_CrashSequence (__null, 11060); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 11060 | "inherit from nsContainerFrame")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "should never be called on a frame that doesn't " "inherit from nsContainerFrame" ")", "./../../../layout/generic/nsIFrame.cpp", 11060); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "should never be called on a frame that doesn't " "inherit from nsContainerFrame" ")"); do { MOZ_CrashSequence (__null, 11060); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 11061 | } |
| 11062 | |
| 11063 | #ifdef ACCESSIBILITY1 |
| 11064 | a11y::AccType nsIFrame::AccessibleType() { |
| 11065 | if (IsTableCaption() && !GetRect().IsEmpty()) { |
| 11066 | return a11y::eHTMLCaptionType; |
| 11067 | } |
| 11068 | return a11y::eNoType; |
| 11069 | } |
| 11070 | #endif |
| 11071 | |
| 11072 | bool nsIFrame::ClearOverflowRects() { |
| 11073 | if (mOverflow.mType == OverflowStorageType::None) { |
| 11074 | return false; |
| 11075 | } |
| 11076 | if (mOverflow.mType == OverflowStorageType::Large) { |
| 11077 | RemoveProperty(OverflowAreasProperty()); |
| 11078 | } |
| 11079 | mOverflow.mType = OverflowStorageType::None; |
| 11080 | return true; |
| 11081 | } |
| 11082 | |
| 11083 | bool nsIFrame::SetOverflowAreas(const OverflowAreas& aOverflowAreas) { |
| 11084 | if (mOverflow.mType == OverflowStorageType::Large) { |
| 11085 | OverflowAreas* overflow = GetOverflowAreasProperty(); |
| 11086 | bool changed = *overflow != aOverflowAreas; |
| 11087 | *overflow = aOverflowAreas; |
| 11088 | |
| 11089 | // Don't bother with converting to the deltas form if we already |
| 11090 | // have a property. |
| 11091 | return changed; |
| 11092 | } |
| 11093 | |
| 11094 | const nsRect& vis = aOverflowAreas.InkOverflow(); |
| 11095 | uint32_t l = -vis.x, // left edge: positive delta is leftwards |
| 11096 | t = -vis.y, // top: positive is upwards |
| 11097 | r = vis.XMost() - mRect.width, // right: positive is rightwards |
| 11098 | b = vis.YMost() - mRect.height; // bottom: positive is downwards |
| 11099 | if (aOverflowAreas.ScrollableOverflow().IsEqualEdges( |
| 11100 | nsRect(nsPoint(0, 0), GetSize())) && |
| 11101 | l <= InkOverflowDeltas::kMax && t <= InkOverflowDeltas::kMax && |
| 11102 | r <= InkOverflowDeltas::kMax && b <= InkOverflowDeltas::kMax && |
| 11103 | // we have to check these against zero because we *never* want to |
| 11104 | // set a frame as having no overflow in this function. This is |
| 11105 | // because FinishAndStoreOverflow calls this function prior to |
| 11106 | // SetRect based on whether the overflow areas match aNewSize. |
| 11107 | // In the case where the overflow areas exactly match mRect but |
| 11108 | // do not match aNewSize, we need to store overflow in a property |
| 11109 | // so that our eventual SetRect/SetSize will know that it has to |
| 11110 | // reset our overflow areas. |
| 11111 | (l | t | r | b) != 0) { |
| 11112 | InkOverflowDeltas oldDeltas = mOverflow.mInkOverflowDeltas; |
| 11113 | // It's a "small" overflow area so we store the deltas for each edge |
| 11114 | // directly in the frame, rather than allocating a separate rect. |
| 11115 | // If they're all zero, that's fine; we're setting things to |
| 11116 | // no-overflow. |
| 11117 | mOverflow.mInkOverflowDeltas.mLeft = l; |
| 11118 | mOverflow.mInkOverflowDeltas.mTop = t; |
| 11119 | mOverflow.mInkOverflowDeltas.mRight = r; |
| 11120 | mOverflow.mInkOverflowDeltas.mBottom = b; |
| 11121 | // There was no scrollable overflow before, and there isn't now. |
| 11122 | return oldDeltas != mOverflow.mInkOverflowDeltas; |
| 11123 | } else { |
| 11124 | bool changed = |
| 11125 | !aOverflowAreas.ScrollableOverflow().IsEqualEdges( |
| 11126 | nsRect(nsPoint(0, 0), GetSize())) || |
| 11127 | !aOverflowAreas.InkOverflow().IsEqualEdges(InkOverflowFromDeltas()); |
| 11128 | |
| 11129 | // it's a large overflow area that we need to store as a property |
| 11130 | mOverflow.mType = OverflowStorageType::Large; |
| 11131 | AddProperty(OverflowAreasProperty(), new OverflowAreas(aOverflowAreas)); |
| 11132 | return changed; |
| 11133 | } |
| 11134 | } |
| 11135 | |
| 11136 | enum class ApplyTransform : bool { No, Yes }; |
| 11137 | |
| 11138 | /** |
| 11139 | * Compute the outline inner rect (so without outline-width and outline-offset) |
| 11140 | * of aFrame, maybe iterating over its descendants, in aFrame's coordinate space |
| 11141 | * or its post-transform coordinate space (depending on aApplyTransform). |
| 11142 | */ |
| 11143 | static nsRect ComputeOutlineInnerRect( |
| 11144 | nsIFrame* aFrame, ApplyTransform aApplyTransform, bool& aOutValid, |
| 11145 | const nsSize* aSizeOverride = nullptr, |
| 11146 | const OverflowAreas* aOverflowOverride = nullptr) { |
| 11147 | const nsRect bounds(nsPoint(0, 0), |
| 11148 | aSizeOverride ? *aSizeOverride : aFrame->GetSize()); |
| 11149 | |
| 11150 | // The SVG container frames besides SVGTextFrame do not maintain |
| 11151 | // an accurate mRect. It will make the outline be larger than |
| 11152 | // we expect, we need to make them narrow to their children's outline. |
| 11153 | // aOutValid is set to false if the returned nsRect is not valid |
| 11154 | // and should not be included in the outline rectangle. |
| 11155 | aOutValid = !aFrame->HasAnyStateBits(NS_FRAME_SVG_LAYOUT) || |
| 11156 | !aFrame->IsSVGContainerFrame() || aFrame->IsSVGTextFrame(); |
| 11157 | |
| 11158 | nsRect u; |
| 11159 | |
| 11160 | if (!aFrame->FrameMaintainsOverflow()) { |
| 11161 | return u; |
| 11162 | } |
| 11163 | |
| 11164 | // Start from our border-box, transformed. See comment below about |
| 11165 | // transform of children. |
| 11166 | bool doTransform = |
| 11167 | aApplyTransform == ApplyTransform::Yes && aFrame->IsTransformed(); |
| 11168 | TransformReferenceBox boundsRefBox(nullptr, bounds); |
| 11169 | if (doTransform) { |
| 11170 | u = nsDisplayTransform::TransformRect(bounds, aFrame, boundsRefBox); |
| 11171 | } else { |
| 11172 | u = bounds; |
| 11173 | } |
| 11174 | |
| 11175 | if (aOutValid && !StaticPrefs::layout_outline_include_overflow()) { |
| 11176 | return u; |
| 11177 | } |
| 11178 | |
| 11179 | // Only iterate through the children if the overflow areas suggest |
| 11180 | // that we might need to, and if the frame doesn't clip its overflow |
| 11181 | // anyway. |
| 11182 | if (aOverflowOverride) { |
| 11183 | if (!doTransform && bounds.IsEqualEdges(aOverflowOverride->InkOverflow()) && |
| 11184 | bounds.IsEqualEdges(aOverflowOverride->ScrollableOverflow())) { |
| 11185 | return u; |
| 11186 | } |
| 11187 | } else { |
| 11188 | if (!doTransform && bounds.IsEqualEdges(aFrame->InkOverflowRect()) && |
| 11189 | bounds.IsEqualEdges(aFrame->ScrollableOverflowRect())) { |
| 11190 | return u; |
| 11191 | } |
| 11192 | } |
| 11193 | const nsStyleDisplay* disp = aFrame->StyleDisplay(); |
| 11194 | LayoutFrameType fType = aFrame->Type(); |
| 11195 | if (fType == LayoutFrameType::ScrollContainer || |
| 11196 | fType == LayoutFrameType::ListControl || |
| 11197 | fType == LayoutFrameType::SVGOuterSVG) { |
| 11198 | return u; |
| 11199 | } |
| 11200 | |
| 11201 | auto overflowClipAxes = aFrame->ShouldApplyOverflowClipping(disp); |
| 11202 | auto overflowClipMargin = aFrame->OverflowClipMargin( |
| 11203 | overflowClipAxes, /* aAllowNegative = */ false); |
| 11204 | if (overflowClipAxes == kPhysicalAxesBoth && overflowClipMargin.IsAllZero()) { |
| 11205 | return u; |
| 11206 | } |
| 11207 | |
| 11208 | const nsStyleEffects* effects = aFrame->StyleEffects(); |
| 11209 | Maybe<nsRect> clipPropClipRect = |
| 11210 | aFrame->GetClipPropClipRect(disp, effects, bounds.Size()); |
| 11211 | |
| 11212 | // Iterate over all children except pop-up, absolutely-positioned, |
| 11213 | // float, and overflow ones. |
| 11214 | const FrameChildListIDs skip = {FrameChildListID::Absolute, |
| 11215 | FrameChildListID::Float, |
| 11216 | FrameChildListID::Overflow}; |
| 11217 | for (const auto& [list, listID] : aFrame->ChildLists()) { |
| 11218 | if (skip.contains(listID)) { |
| 11219 | continue; |
| 11220 | } |
| 11221 | |
| 11222 | for (nsIFrame* child : list) { |
| 11223 | if (child->IsPlaceholderFrame()) { |
| 11224 | continue; |
| 11225 | } |
| 11226 | |
| 11227 | // Note that passing ApplyTransform::Yes when |
| 11228 | // child->Combines3DTransformWithAncestors() returns true is incorrect if |
| 11229 | // our aApplyTransform is No... but the opposite would be as well. |
| 11230 | // This is because elements within a preserve-3d scene are always |
| 11231 | // transformed up to the top of the scene. This means we don't have a |
| 11232 | // mechanism for getting a transform up to an intermediate point within |
| 11233 | // the scene. We choose to over-transform rather than under-transform |
| 11234 | // because this is consistent with other overflow areas. |
| 11235 | bool validRect = true; |
| 11236 | nsRect childRect = |
| 11237 | ComputeOutlineInnerRect(child, ApplyTransform::Yes, validRect) + |
| 11238 | child->GetPosition(); |
| 11239 | |
| 11240 | if (!validRect) { |
| 11241 | continue; |
| 11242 | } |
| 11243 | |
| 11244 | if (clipPropClipRect) { |
| 11245 | // Intersect with the clip before transforming. |
| 11246 | childRect.IntersectRect(childRect, *clipPropClipRect); |
| 11247 | } |
| 11248 | |
| 11249 | // Note that we transform each child separately according to |
| 11250 | // aFrame's transform, and then union, which gives a different |
| 11251 | // (smaller) result from unioning and then transforming the |
| 11252 | // union. This doesn't match the way we handle overflow areas |
| 11253 | // with 2-D transforms, though it does match the way we handle |
| 11254 | // overflow areas in preserve-3d 3-D scenes. |
| 11255 | if (doTransform && !child->Combines3DTransformWithAncestors()) { |
| 11256 | childRect = |
| 11257 | nsDisplayTransform::TransformRect(childRect, aFrame, boundsRefBox); |
| 11258 | } |
| 11259 | |
| 11260 | // If a SVGContainer has a non-SVGContainer child, we assign |
| 11261 | // its child's outline to this SVGContainer directly. |
| 11262 | if (!aOutValid && validRect) { |
| 11263 | u = childRect; |
| 11264 | aOutValid = true; |
| 11265 | } else { |
| 11266 | u = u.UnionEdges(childRect); |
| 11267 | } |
| 11268 | } |
| 11269 | } |
| 11270 | |
| 11271 | if (!overflowClipAxes.isEmpty()) { |
| 11272 | OverflowAreas::ApplyOverflowClippingOnRect(u, bounds, overflowClipAxes, |
| 11273 | overflowClipMargin); |
| 11274 | } |
| 11275 | return u; |
| 11276 | } |
| 11277 | |
| 11278 | static void ComputeAndIncludeOutlineArea(nsIFrame* aFrame, |
| 11279 | OverflowAreas& aOverflowAreas, |
| 11280 | const nsSize& aNewSize) { |
| 11281 | const nsStyleOutline* outline = aFrame->StyleOutline(); |
| 11282 | if (!outline->ShouldPaintOutline()) { |
| 11283 | return; |
| 11284 | } |
| 11285 | |
| 11286 | // When the outline property is set on a :-moz-block-inside-inline-wrapper |
| 11287 | // pseudo-element, it inherited that outline from the inline that was broken |
| 11288 | // because it contained a block. In that case, we don't want a really wide |
| 11289 | // outline if the block inside the inline is narrow, so union the actual |
| 11290 | // contents of the anonymous blocks. |
| 11291 | nsIFrame* frameForArea = aFrame; |
| 11292 | do { |
| 11293 | PseudoStyleType pseudoType = frameForArea->Style()->GetPseudoType(); |
| 11294 | if (pseudoType != PseudoStyleType::MozBlockInsideInlineWrapper) { |
| 11295 | break; |
| 11296 | } |
| 11297 | // If we're done, we really want it and all its later siblings. |
| 11298 | frameForArea = frameForArea->PrincipalChildList().FirstChild(); |
| 11299 | NS_ASSERTION(frameForArea, "anonymous block with no children?")do { if (!(frameForArea)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "anonymous block with no children?", "frameForArea", "./../../../layout/generic/nsIFrame.cpp" , 11299); MOZ_PretendNoReturn(); } } while (0); |
| 11300 | } while (frameForArea); |
| 11301 | |
| 11302 | // Find the union of the border boxes of all descendants, or in |
| 11303 | // the block-in-inline case, all descendants we care about. |
| 11304 | // |
| 11305 | // Note that the interesting perspective-related cases are taken |
| 11306 | // care of by the code that handles those issues for overflow |
| 11307 | // calling FinishAndStoreOverflow again, which in turn calls this |
| 11308 | // function again. We still need to deal with preserve-3d a bit. |
| 11309 | nsRect innerRect; |
| 11310 | bool validRect = false; |
| 11311 | if (frameForArea == aFrame) { |
| 11312 | innerRect = ComputeOutlineInnerRect(aFrame, ApplyTransform::No, validRect, |
| 11313 | &aNewSize, &aOverflowAreas); |
| 11314 | } else { |
| 11315 | for (; frameForArea; frameForArea = frameForArea->GetNextSibling()) { |
| 11316 | nsRect r = |
| 11317 | ComputeOutlineInnerRect(frameForArea, ApplyTransform::Yes, validRect); |
| 11318 | |
| 11319 | // Adjust for offsets transforms up to aFrame's pre-transform |
| 11320 | // (i.e., normal) coordinate space; see comments in |
| 11321 | // UnionBorderBoxes for some of the subtlety here. |
| 11322 | for (nsIFrame *f = frameForArea, *parent = f->GetParent(); |
| 11323 | /* see middle of loop */; f = parent, parent = f->GetParent()) { |
| 11324 | r += f->GetPosition(); |
| 11325 | if (parent == aFrame) { |
| 11326 | break; |
| 11327 | } |
| 11328 | if (parent->IsTransformed() && !f->Combines3DTransformWithAncestors()) { |
| 11329 | TransformReferenceBox refBox(parent); |
| 11330 | r = nsDisplayTransform::TransformRect(r, parent, refBox); |
| 11331 | } |
| 11332 | } |
| 11333 | |
| 11334 | innerRect.UnionRect(innerRect, r); |
| 11335 | } |
| 11336 | } |
| 11337 | |
| 11338 | // Keep this code in sync with nsDisplayOutline::GetInnerRect. |
| 11339 | if (innerRect == aFrame->GetRectRelativeToSelf()) { |
| 11340 | aFrame->RemoveProperty(nsIFrame::OutlineInnerRectProperty()); |
| 11341 | } else { |
| 11342 | aFrame->SetOrUpdateDeletableProperty(nsIFrame::OutlineInnerRectProperty(), |
| 11343 | innerRect); |
| 11344 | } |
| 11345 | |
| 11346 | nsRect outerRect(innerRect); |
| 11347 | outerRect.Inflate(outline->EffectiveOffsetFor(outerRect)); |
| 11348 | |
| 11349 | if (outline->mOutlineStyle.IsAuto()) { |
| 11350 | nsPresContext* pc = aFrame->PresContext(); |
| 11351 | |
| 11352 | pc->Theme()->GetWidgetOverflow(pc->DeviceContext(), aFrame, |
| 11353 | StyleAppearance::FocusOutline, &outerRect); |
| 11354 | } else { |
| 11355 | outerRect.Inflate(outline->mOutlineWidth); |
| 11356 | } |
| 11357 | |
| 11358 | nsRect& vo = aOverflowAreas.InkOverflow(); |
| 11359 | vo = vo.UnionEdges(innerRect.Union(outerRect)); |
| 11360 | } |
| 11361 | |
| 11362 | bool nsIFrame::FinishAndStoreOverflow(OverflowAreas& aOverflowAreas, |
| 11363 | nsSize aNewSize, |
| 11364 | const nsStyleDisplay* aStyleDisplay) { |
| 11365 | MOZ_ASSERT(FrameMaintainsOverflow(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(FrameMaintainsOverflow())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(FrameMaintainsOverflow()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("FrameMaintainsOverflow()" " (" "Don't call - overflow rects not maintained on these SVG frames" ")", "./../../../layout/generic/nsIFrame.cpp", 11366); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "FrameMaintainsOverflow()" ") (" "Don't call - overflow rects not maintained on these SVG frames" ")"); do { MOZ_CrashSequence(__null, 11366); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 11366 | "Don't call - overflow rects not maintained on these SVG frames")do { static_assert( mozilla::detail::AssertionConditionType< decltype(FrameMaintainsOverflow())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(FrameMaintainsOverflow()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("FrameMaintainsOverflow()" " (" "Don't call - overflow rects not maintained on these SVG frames" ")", "./../../../layout/generic/nsIFrame.cpp", 11366); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "FrameMaintainsOverflow()" ") (" "Don't call - overflow rects not maintained on these SVG frames" ")"); do { MOZ_CrashSequence(__null, 11366); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11367 | |
| 11368 | const nsStyleDisplay* disp = StyleDisplayWithOptionalParam(aStyleDisplay); |
| 11369 | bool hasTransform = IsTransformed(); |
| 11370 | |
| 11371 | nsRect bounds(nsPoint(), aNewSize); |
| 11372 | // Store the passed in overflow area if we are a preserve-3d frame or we have |
| 11373 | // a transform, and it's not just the frame bounds. |
| 11374 | if (hasTransform || Combines3DTransformWithAncestors()) { |
| 11375 | if (!aOverflowAreas.InkOverflow().IsEqualEdges(bounds) || |
| 11376 | !aOverflowAreas.ScrollableOverflow().IsEqualEdges(bounds)) { |
| 11377 | SetOrUpdateDeletableProperty(nsIFrame::InitialOverflowProperty(), |
| 11378 | aOverflowAreas); |
| 11379 | } else { |
| 11380 | RemoveProperty(nsIFrame::InitialOverflowProperty()); |
| 11381 | } |
| 11382 | #ifdef DEBUG1 |
| 11383 | SetProperty(nsIFrame::DebugInitialOverflowPropertyApplied(), true); |
| 11384 | #endif |
| 11385 | } else { |
| 11386 | #ifdef DEBUG1 |
| 11387 | RemoveProperty(nsIFrame::DebugInitialOverflowPropertyApplied()); |
| 11388 | #endif |
| 11389 | } |
| 11390 | |
| 11391 | const nsSize oldSize = mRect.Size(); |
| 11392 | const bool sizeChanged = oldSize != aNewSize; |
| 11393 | |
| 11394 | // Our frame size may not have been computed and set yet, but code under |
| 11395 | // functions such as ComputeEffectsRect (which we're about to call) use the |
| 11396 | // values that are stored in our frame rect to compute their results. We |
| 11397 | // need the results from those functions to be based on the frame size that |
| 11398 | // we *will* have, so we temporarily set our frame size here before calling |
| 11399 | // those functions. |
| 11400 | // |
| 11401 | // XXX Someone should document here why we revert the frame size before we |
| 11402 | // return rather than just leaving it set. |
| 11403 | // |
| 11404 | // We pass false here to avoid invalidating display items for this temporary |
| 11405 | // change. We sometimes reflow frames multiple times, with the final size |
| 11406 | // being the same as the initial. The single call to SetSize after reflow is |
| 11407 | // done will take care of invalidating display items if the size has actually |
| 11408 | // changed. |
| 11409 | SetSize(aNewSize, false); |
| 11410 | |
| 11411 | if (sizeChanged && ChildrenHavePerspective(disp) && |
| 11412 | RecomputePerspectiveChildrenOverflow(this)) { |
| 11413 | aOverflowAreas.SetAllTo(bounds); |
| 11414 | DebugOnly<bool> ok = ComputeCustomOverflow(aOverflowAreas); |
| 11415 | // ComputeCustomOverflow() should not return false, when |
| 11416 | // FrameMaintainsOverflow() returns true. |
| 11417 | MOZ_ASSERT(ok, "FrameMaintainsOverflow() != ComputeCustomOverflow()")do { static_assert( mozilla::detail::AssertionConditionType< decltype(ok)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(ok))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("ok" " (" "FrameMaintainsOverflow() != ComputeCustomOverflow()" ")", "./../../../layout/generic/nsIFrame.cpp", 11417); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "ok" ") (" "FrameMaintainsOverflow() != ComputeCustomOverflow()" ")"); do { MOZ_CrashSequence(__null, 11417); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11418 | UnionChildOverflow(aOverflowAreas); |
| 11419 | } |
| 11420 | |
| 11421 | const auto overflowClipAxes = ShouldApplyOverflowClipping(disp); |
| 11422 | |
| 11423 | // This is now called FinishAndStoreOverflow() instead of |
| 11424 | // StoreOverflow() because frame-generic ways of adding overflow |
| 11425 | // can happen here, e.g. CSS2 outline and native theme. |
| 11426 | // If the overflow area width or height is nscoord_MAX, then a saturating |
| 11427 | // union may have encountered an overflow, so the overflow may not contain the |
| 11428 | // frame border-box. Don't warn in that case. |
| 11429 | // Don't warn for SVG either, since SVG doesn't need the overflow area |
| 11430 | // to contain the frame bounds. |
| 11431 | #ifdef DEBUG1 |
| 11432 | for (const auto otype : AllOverflowTypes()) { |
| 11433 | const nsRect& r = aOverflowAreas.Overflow(otype); |
| 11434 | NS_ASSERTION(aNewSize.width == 0 || aNewSize.height == 0 ||do { if (!(aNewSize.width == 0 || aNewSize.height == 0 || r.width == nscoord_MAX || r.height == nscoord_MAX || HasAnyStateBits (NS_FRAME_SVG_LAYOUT) || r.Contains(nsRect(nsPoint(), aNewSize )))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Computed overflow area must contain frame bounds" , "aNewSize.width == 0 || aNewSize.height == 0 || r.width == nscoord_MAX || r.height == nscoord_MAX || HasAnyStateBits(NS_FRAME_SVG_LAYOUT) || r.Contains(nsRect(nsPoint(), aNewSize))" , "./../../../layout/generic/nsIFrame.cpp", 11438); MOZ_PretendNoReturn (); } } while (0) |
| 11435 | r.width == nscoord_MAX || r.height == nscoord_MAX ||do { if (!(aNewSize.width == 0 || aNewSize.height == 0 || r.width == nscoord_MAX || r.height == nscoord_MAX || HasAnyStateBits (NS_FRAME_SVG_LAYOUT) || r.Contains(nsRect(nsPoint(), aNewSize )))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Computed overflow area must contain frame bounds" , "aNewSize.width == 0 || aNewSize.height == 0 || r.width == nscoord_MAX || r.height == nscoord_MAX || HasAnyStateBits(NS_FRAME_SVG_LAYOUT) || r.Contains(nsRect(nsPoint(), aNewSize))" , "./../../../layout/generic/nsIFrame.cpp", 11438); MOZ_PretendNoReturn (); } } while (0) |
| 11436 | HasAnyStateBits(NS_FRAME_SVG_LAYOUT) ||do { if (!(aNewSize.width == 0 || aNewSize.height == 0 || r.width == nscoord_MAX || r.height == nscoord_MAX || HasAnyStateBits (NS_FRAME_SVG_LAYOUT) || r.Contains(nsRect(nsPoint(), aNewSize )))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Computed overflow area must contain frame bounds" , "aNewSize.width == 0 || aNewSize.height == 0 || r.width == nscoord_MAX || r.height == nscoord_MAX || HasAnyStateBits(NS_FRAME_SVG_LAYOUT) || r.Contains(nsRect(nsPoint(), aNewSize))" , "./../../../layout/generic/nsIFrame.cpp", 11438); MOZ_PretendNoReturn (); } } while (0) |
| 11437 | r.Contains(nsRect(nsPoint(), aNewSize)),do { if (!(aNewSize.width == 0 || aNewSize.height == 0 || r.width == nscoord_MAX || r.height == nscoord_MAX || HasAnyStateBits (NS_FRAME_SVG_LAYOUT) || r.Contains(nsRect(nsPoint(), aNewSize )))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Computed overflow area must contain frame bounds" , "aNewSize.width == 0 || aNewSize.height == 0 || r.width == nscoord_MAX || r.height == nscoord_MAX || HasAnyStateBits(NS_FRAME_SVG_LAYOUT) || r.Contains(nsRect(nsPoint(), aNewSize))" , "./../../../layout/generic/nsIFrame.cpp", 11438); MOZ_PretendNoReturn (); } } while (0) |
| 11438 | "Computed overflow area must contain frame bounds")do { if (!(aNewSize.width == 0 || aNewSize.height == 0 || r.width == nscoord_MAX || r.height == nscoord_MAX || HasAnyStateBits (NS_FRAME_SVG_LAYOUT) || r.Contains(nsRect(nsPoint(), aNewSize )))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Computed overflow area must contain frame bounds" , "aNewSize.width == 0 || aNewSize.height == 0 || r.width == nscoord_MAX || r.height == nscoord_MAX || HasAnyStateBits(NS_FRAME_SVG_LAYOUT) || r.Contains(nsRect(nsPoint(), aNewSize))" , "./../../../layout/generic/nsIFrame.cpp", 11438); MOZ_PretendNoReturn (); } } while (0); |
| 11439 | } |
| 11440 | #endif |
| 11441 | |
| 11442 | // Overflow area must always include the frame's top-left and bottom-right, |
| 11443 | // even if the frame rect is empty (so we can scroll to those positions). |
| 11444 | const bool shouldIncludeBounds = [&] { |
| 11445 | if (aNewSize.width == 0 && IsInlineFrame()) { |
| 11446 | // Pending a real fix for bug 426879, don't do this for inline frames with |
| 11447 | // zero width. |
| 11448 | return false; |
| 11449 | } |
| 11450 | if (HasAnyStateBits(NS_FRAME_SVG_LAYOUT)) { |
| 11451 | // Do not do this for SVG either, since it will usually massively increase |
| 11452 | // the area unnecessarily (except for SVG that applies clipping, since |
| 11453 | // that's the pre-existing behavior, and breaks pre-rendering otherwise). |
| 11454 | // FIXME(bug 1770704): This check most likely wants to be removed or check |
| 11455 | // for specific frame types at least. |
| 11456 | return !overflowClipAxes.isEmpty(); |
| 11457 | } |
| 11458 | return true; |
| 11459 | }(); |
| 11460 | |
| 11461 | if (shouldIncludeBounds) { |
| 11462 | for (const auto otype : AllOverflowTypes()) { |
| 11463 | nsRect& o = aOverflowAreas.Overflow(otype); |
| 11464 | o = o.UnionEdges(bounds); |
| 11465 | } |
| 11466 | } |
| 11467 | |
| 11468 | // If we clip our children, clear accumulated overflow area in the affected |
| 11469 | // dimension(s). The children are actually clipped to the padding-box, but |
| 11470 | // since the overflow area should include the entire border-box, just set it |
| 11471 | // to the border-box size here. |
| 11472 | if (!overflowClipAxes.isEmpty()) { |
| 11473 | aOverflowAreas.ApplyClipping( |
| 11474 | bounds, overflowClipAxes, |
| 11475 | OverflowClipMargin(overflowClipAxes, /* aAllowNegative = */ false)); |
| 11476 | } |
| 11477 | |
| 11478 | ComputeAndIncludeOutlineArea(this, aOverflowAreas, aNewSize); |
| 11479 | |
| 11480 | // Nothing in here should affect scrollable overflow. |
| 11481 | aOverflowAreas.InkOverflow() = |
| 11482 | ComputeEffectsRect(this, aOverflowAreas.InkOverflow(), aNewSize); |
| 11483 | |
| 11484 | // Absolute position clipping |
| 11485 | const nsStyleEffects* effects = StyleEffects(); |
| 11486 | Maybe<nsRect> clipPropClipRect = GetClipPropClipRect(disp, effects, aNewSize); |
| 11487 | if (clipPropClipRect) { |
| 11488 | for (const auto otype : AllOverflowTypes()) { |
| 11489 | nsRect& o = aOverflowAreas.Overflow(otype); |
| 11490 | o.IntersectRect(o, *clipPropClipRect); |
| 11491 | } |
| 11492 | } |
| 11493 | |
| 11494 | /* If we're transformed, transform the overflow rect by the current |
| 11495 | * transformation. */ |
| 11496 | if (hasTransform) { |
| 11497 | SetProperty(nsIFrame::PreTransformOverflowAreasProperty(), |
| 11498 | new OverflowAreas(aOverflowAreas)); |
| 11499 | |
| 11500 | if (Combines3DTransformWithAncestors()) { |
| 11501 | /* If we're a preserve-3d leaf frame, then our pre-transform overflow |
| 11502 | * should be correct. Our post-transform overflow is empty though, because |
| 11503 | * we only contribute to the overflow area of the preserve-3d root frame. |
| 11504 | * If we're an intermediate frame then the pre-transform overflow should |
| 11505 | * contain all our non-preserve-3d children, which is what we want. Again |
| 11506 | * we have no post-transform overflow. |
| 11507 | */ |
| 11508 | aOverflowAreas.SetAllTo(nsRect()); |
| 11509 | } else { |
| 11510 | TransformReferenceBox refBox(this); |
| 11511 | for (const auto otype : AllOverflowTypes()) { |
| 11512 | nsRect& o = aOverflowAreas.Overflow(otype); |
| 11513 | // If the overflow is empty, it can still have a non-zero length in one |
| 11514 | // axis. Transforming such axis-bound rect can cause the resulting rect |
| 11515 | // to be non-empty, e.g. by rotating the rect. |
| 11516 | if (!o.IsEmpty()) { |
| 11517 | o = nsDisplayTransform::TransformRect(o, this, refBox); |
| 11518 | } |
| 11519 | } |
| 11520 | |
| 11521 | /* If we're the root of the 3d context, then we want to include the |
| 11522 | * overflow areas of all the participants. This won't have happened yet as |
| 11523 | * the code above set their overflow area to empty. Manually collect these |
| 11524 | * overflow areas now. |
| 11525 | */ |
| 11526 | if (Extend3DContext(disp, effects)) { |
| 11527 | ComputePreserve3DChildrenOverflow(aOverflowAreas); |
| 11528 | } |
| 11529 | } |
| 11530 | } else { |
| 11531 | RemoveProperty(nsIFrame::PreTransformOverflowAreasProperty()); |
| 11532 | } |
| 11533 | |
| 11534 | /* Revert the size change in case some caller is depending on this. */ |
| 11535 | SetSize(oldSize, false); |
| 11536 | |
| 11537 | bool anyOverflowChanged; |
| 11538 | if (aOverflowAreas != OverflowAreas(bounds, bounds)) { |
| 11539 | anyOverflowChanged = SetOverflowAreas(aOverflowAreas); |
| 11540 | } else { |
| 11541 | anyOverflowChanged = ClearOverflowRects(); |
| 11542 | } |
| 11543 | |
| 11544 | if (anyOverflowChanged) { |
| 11545 | SVGObserverUtils::InvalidateDirectRenderingObservers(this); |
| 11546 | if (nsBlockFrame* block = do_QueryFrame(this)) { |
| 11547 | // NOTE(emilio): we need to use BeforeReflow::Yes, because we want to |
| 11548 | // invalidate in cases where we _used_ to have an overflow marker and no |
| 11549 | // longer do. |
| 11550 | if (TextOverflow::CanHaveOverflowMarkers( |
| 11551 | block, TextOverflow::BeforeReflow::Yes)) { |
| 11552 | DiscardDisplayItems(this, [](nsDisplayItem* aItem) { |
| 11553 | return aItem->GetType() == DisplayItemType::TYPE_TEXT_OVERFLOW; |
| 11554 | }); |
| 11555 | SchedulePaint(PAINT_DEFAULT); |
| 11556 | } |
| 11557 | } |
| 11558 | } |
| 11559 | return anyOverflowChanged; |
| 11560 | } |
| 11561 | |
| 11562 | bool nsIFrame::RecomputePerspectiveChildrenOverflow( |
| 11563 | const nsIFrame* aStartFrame) { |
| 11564 | bool changed = false; |
| 11565 | for (const auto& childList : ChildLists()) { |
| 11566 | for (nsIFrame* child : childList.mList) { |
| 11567 | if (!child->FrameMaintainsOverflow()) { |
| 11568 | continue; // frame does not maintain overflow rects |
| 11569 | } |
| 11570 | if (child->HasPerspective()) { |
| 11571 | OverflowAreas* initialOverflow = |
| 11572 | child->GetProperty(nsIFrame::InitialOverflowProperty()); |
| 11573 | const nsRect bounds(nsPoint(), child->GetSize()); |
| 11574 | OverflowAreas overflow; |
| 11575 | if (initialOverflow) { |
| 11576 | overflow = *initialOverflow; |
| 11577 | } else { |
| 11578 | overflow.SetAllTo(bounds); |
| 11579 | } |
| 11580 | changed |= child->FinishAndStoreOverflow(overflow, bounds.Size()); |
| 11581 | } else if (child->GetContent() == aStartFrame->GetContent() || |
| 11582 | child->GetClosestFlattenedTreeAncestorPrimaryFrame() == |
| 11583 | aStartFrame) { |
| 11584 | // If a frame is using perspective, then the size used to compute |
| 11585 | // perspective-origin is the size of the frame belonging to its parent |
| 11586 | // style. We must find any descendant frames using our size |
| 11587 | // (by recursing into frames that have the same containing block) |
| 11588 | // to update their overflow rects too. |
| 11589 | if (child->RecomputePerspectiveChildrenOverflow(aStartFrame)) { |
| 11590 | changed = true; |
| 11591 | // Update the overflow for the child to take any changes from its |
| 11592 | // children into account. |
| 11593 | child->UpdateOverflow(); |
| 11594 | } |
| 11595 | } |
| 11596 | } |
| 11597 | } |
| 11598 | return changed; |
| 11599 | } |
| 11600 | |
| 11601 | void nsIFrame::ComputePreserve3DChildrenOverflow( |
| 11602 | OverflowAreas& aOverflowAreas) { |
| 11603 | // Find all descendants that participate in the 3d context, and include their |
| 11604 | // overflow. These descendants have an empty overflow, so won't have been |
| 11605 | // included in the normal overflow calculation. Any children that don't |
| 11606 | // participate have normal overflow, so will have been included already. |
| 11607 | |
| 11608 | for (const auto& childList : ChildLists()) { |
| 11609 | for (nsIFrame* child : childList.mList) { |
| 11610 | // If this child participates in the 3d context, then take the |
| 11611 | // pre-transform region (which contains all descendants that aren't |
| 11612 | // participating in the 3d context) and transform it into the 3d context |
| 11613 | // root coordinate space. |
| 11614 | if (child->Combines3DTransformWithAncestors()) { |
| 11615 | OverflowAreas childOverflow = child->GetOverflowAreasRelativeToSelf(); |
| 11616 | TransformReferenceBox refBox(child); |
| 11617 | for (const auto otype : AllOverflowTypes()) { |
| 11618 | nsRect& o = childOverflow.Overflow(otype); |
| 11619 | o = nsDisplayTransform::TransformRect(o, child, refBox); |
| 11620 | } |
| 11621 | |
| 11622 | aOverflowAreas.UnionWith(childOverflow); |
| 11623 | |
| 11624 | // If this child also extends the 3d context, then recurse into it |
| 11625 | // looking for more participants. |
| 11626 | if (child->Extend3DContext()) { |
| 11627 | child->ComputePreserve3DChildrenOverflow(aOverflowAreas); |
| 11628 | } |
| 11629 | } |
| 11630 | } |
| 11631 | } |
| 11632 | } |
| 11633 | |
| 11634 | bool nsIFrame::ZIndexApplies() const { |
| 11635 | return StyleDisplay()->IsPositionedStyle() || IsFlexOrGridItem() || |
| 11636 | IsMenuPopupFrame(); |
| 11637 | } |
| 11638 | |
| 11639 | Maybe<int32_t> nsIFrame::ZIndex() const { |
| 11640 | if (!ZIndexApplies()) { |
| 11641 | return Nothing(); |
| 11642 | } |
| 11643 | const auto& zIndex = StylePosition()->mZIndex; |
| 11644 | if (zIndex.IsAuto()) { |
| 11645 | return Nothing(); |
| 11646 | } |
| 11647 | return Some(zIndex.AsInteger()); |
| 11648 | } |
| 11649 | |
| 11650 | bool nsIFrame::IsScrollAnchor(ScrollAnchorContainer** aOutContainer) { |
| 11651 | if (!mInScrollAnchorChain) { |
| 11652 | return false; |
| 11653 | } |
| 11654 | |
| 11655 | nsIFrame* f = this; |
| 11656 | |
| 11657 | // FIXME(emilio, bug 1629280): We should find a non-null anchor if we have the |
| 11658 | // flag set, but bug 1629280 makes it so that we cannot really assert it / |
| 11659 | // make this just a `while (true)`, and uncomment the below assertion. |
| 11660 | while (auto* container = ScrollAnchorContainer::FindFor(f)) { |
| 11661 | // MOZ_ASSERT(f->IsInScrollAnchorChain()); |
| 11662 | if (nsIFrame* anchor = container->AnchorNode()) { |
| 11663 | if (anchor != this) { |
| 11664 | return false; |
| 11665 | } |
| 11666 | if (aOutContainer) { |
| 11667 | *aOutContainer = container; |
| 11668 | } |
| 11669 | return true; |
| 11670 | } |
| 11671 | |
| 11672 | f = container->Frame(); |
| 11673 | } |
| 11674 | |
| 11675 | return false; |
| 11676 | } |
| 11677 | |
| 11678 | bool nsIFrame::IsInScrollAnchorChain() const { return mInScrollAnchorChain; } |
| 11679 | |
| 11680 | void nsIFrame::SetInScrollAnchorChain(bool aInChain) { |
| 11681 | mInScrollAnchorChain = aInChain; |
| 11682 | } |
| 11683 | |
| 11684 | uint32_t nsIFrame::GetDepthInFrameTree() const { |
| 11685 | uint32_t result = 0; |
| 11686 | for (nsContainerFrame* ancestor = GetParent(); ancestor; |
| 11687 | ancestor = ancestor->GetParent()) { |
| 11688 | result++; |
| 11689 | } |
| 11690 | return result; |
| 11691 | } |
| 11692 | |
| 11693 | /** |
| 11694 | * This function takes a frame that is part of a block-in-inline split, |
| 11695 | * and _if_ that frame is an anonymous block created by an ib split it |
| 11696 | * returns the block's preceding inline. This is needed because the |
| 11697 | * split inline's style is the parent of the anonymous block's style. |
| 11698 | * |
| 11699 | * If aFrame is not an anonymous block, null is returned. |
| 11700 | */ |
| 11701 | static nsIFrame* GetIBSplitSiblingForAnonymousBlock(const nsIFrame* aFrame) { |
| 11702 | MOZ_ASSERT(aFrame, "Must have a non-null frame!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aFrame)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(aFrame))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aFrame" " (" "Must have a non-null frame!" ")", "./../../../layout/generic/nsIFrame.cpp", 11702); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aFrame" ") (" "Must have a non-null frame!" ")"); do { MOZ_CrashSequence(__null, 11702); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11703 | NS_ASSERTION(aFrame->HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT),do { if (!(aFrame->HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "GetIBSplitSibling should only be called on ib-split frames" , "aFrame->HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)", "./../../../layout/generic/nsIFrame.cpp" , 11704); MOZ_PretendNoReturn(); } } while (0) |
| 11704 | "GetIBSplitSibling should only be called on ib-split frames")do { if (!(aFrame->HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "GetIBSplitSibling should only be called on ib-split frames" , "aFrame->HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)", "./../../../layout/generic/nsIFrame.cpp" , 11704); MOZ_PretendNoReturn(); } } while (0); |
| 11705 | |
| 11706 | if (aFrame->Style()->GetPseudoType() != |
| 11707 | PseudoStyleType::MozBlockInsideInlineWrapper) { |
| 11708 | // it's not an anonymous block |
| 11709 | return nullptr; |
| 11710 | } |
| 11711 | |
| 11712 | // Find the first continuation of the frame. (Ugh. This ends up |
| 11713 | // being O(N^2) when it is called O(N) times.) |
| 11714 | aFrame = aFrame->FirstContinuation(); |
| 11715 | |
| 11716 | /* |
| 11717 | * Now look up the nsGkAtoms::IBSplitPrevSibling |
| 11718 | * property. |
| 11719 | */ |
| 11720 | nsIFrame* ibSplitSibling = |
| 11721 | aFrame->GetProperty(nsIFrame::IBSplitPrevSibling()); |
| 11722 | NS_ASSERTION(ibSplitSibling, "Broken frame tree?")do { if (!(ibSplitSibling)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "Broken frame tree?", "ibSplitSibling", "./../../../layout/generic/nsIFrame.cpp" , 11722); MOZ_PretendNoReturn(); } } while (0); |
| 11723 | return ibSplitSibling; |
| 11724 | } |
| 11725 | |
| 11726 | /** |
| 11727 | * Get the parent, corrected for the mangled frame tree resulting from |
| 11728 | * having a block within an inline. The result only differs from the |
| 11729 | * result of |GetParent| when |GetParent| returns an anonymous block |
| 11730 | * that was created for an element that was 'display: inline' because |
| 11731 | * that element contained a block. |
| 11732 | * |
| 11733 | * Also skip anonymous scrolled-content parents; inherit directly from the |
| 11734 | * outer scroll frame. |
| 11735 | * |
| 11736 | * Also skip NAC parents if the child frame is NAC. |
| 11737 | */ |
| 11738 | static nsIFrame* GetCorrectedParent(const nsIFrame* aFrame) { |
| 11739 | nsIFrame* parent = aFrame->GetParent(); |
| 11740 | if (!parent) { |
| 11741 | return nullptr; |
| 11742 | } |
| 11743 | |
| 11744 | // For a table caption we want the _inner_ table frame (unless it's anonymous) |
| 11745 | // as the style parent. |
| 11746 | if (aFrame->IsTableCaption()) { |
| 11747 | MOZ_ASSERT(parent->IsTableWrapperFrame())do { static_assert( mozilla::detail::AssertionConditionType< decltype(parent->IsTableWrapperFrame())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(parent->IsTableWrapperFrame ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("parent->IsTableWrapperFrame()", "./../../../layout/generic/nsIFrame.cpp" , 11747); AnnotateMozCrashReason("MOZ_ASSERT" "(" "parent->IsTableWrapperFrame()" ")"); do { MOZ_CrashSequence(__null, 11747); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11748 | nsTableFrame* innerTable = |
| 11749 | static_cast<const nsTableWrapperFrame*>(parent)->InnerTableFrame(); |
| 11750 | if (!innerTable->Style()->IsAnonBox()) { |
| 11751 | return innerTable; |
| 11752 | } |
| 11753 | } |
| 11754 | |
| 11755 | // Table wrappers are always anon boxes; if we're in here for an outer |
| 11756 | // table, that actually means its the _inner_ table that wants to |
| 11757 | // know its parent. So get the pseudo of the inner in that case. |
| 11758 | auto pseudo = aFrame->Style()->GetPseudoType(); |
| 11759 | if (pseudo == PseudoStyleType::MozTableWrapper) { |
| 11760 | MOZ_ASSERT(aFrame->IsTableWrapperFrame())do { static_assert( mozilla::detail::AssertionConditionType< decltype(aFrame->IsTableWrapperFrame())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aFrame->IsTableWrapperFrame ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aFrame->IsTableWrapperFrame()", "./../../../layout/generic/nsIFrame.cpp" , 11760); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aFrame->IsTableWrapperFrame()" ")"); do { MOZ_CrashSequence(__null, 11760); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11761 | nsTableFrame* innerTable = |
| 11762 | static_cast<const nsTableWrapperFrame*>(aFrame)->InnerTableFrame(); |
| 11763 | pseudo = innerTable->Style()->GetPseudoType(); |
| 11764 | } |
| 11765 | |
| 11766 | // Prevent a NAC pseudo-element from inheriting from its NAC parent, and |
| 11767 | // inherit from the NAC generator element instead. (We exclude element-backed |
| 11768 | // pseudos from this check, since they're not NAC.) |
| 11769 | if (pseudo != PseudoStyleType::NotPseudo && |
| 11770 | !PseudoStyle::IsElementBackedPseudo(pseudo)) { |
| 11771 | MOZ_ASSERT(aFrame->GetContent())do { static_assert( mozilla::detail::AssertionConditionType< decltype(aFrame->GetContent())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aFrame->GetContent()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("aFrame->GetContent()" , "./../../../layout/generic/nsIFrame.cpp", 11771); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "aFrame->GetContent()" ")"); do { MOZ_CrashSequence (__null, 11771); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 11772 | Element* element = Element::FromNode(aFrame->GetContent()); |
| 11773 | // Make sure to only do the fixup for anonymous content pseudos (i.e. avoid |
| 11774 | // fixup for ::first-line and such). |
| 11775 | if (element && !element->IsRootOfNativeAnonymousSubtree() && |
| 11776 | element->GetPseudoElementType() == aFrame->Style()->GetPseudoType()) { |
| 11777 | while (parent->GetContent() && |
| 11778 | !parent->GetContent()->IsRootOfNativeAnonymousSubtree()) { |
| 11779 | parent = parent->GetInFlowParent(); |
| 11780 | } |
| 11781 | parent = parent->GetInFlowParent(); |
| 11782 | } |
| 11783 | } |
| 11784 | |
| 11785 | return nsIFrame::CorrectStyleParentFrame(parent, pseudo); |
| 11786 | } |
| 11787 | |
| 11788 | /* static */ |
| 11789 | nsIFrame* nsIFrame::CorrectStyleParentFrame(nsIFrame* aProspectiveParent, |
| 11790 | PseudoStyleType aChildPseudo) { |
| 11791 | MOZ_ASSERT(aProspectiveParent, "Must have a prospective parent")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aProspectiveParent)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aProspectiveParent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aProspectiveParent" " (" "Must have a prospective parent" ")", "./../../../layout/generic/nsIFrame.cpp" , 11791); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aProspectiveParent" ") (" "Must have a prospective parent" ")"); do { MOZ_CrashSequence (__null, 11791); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 11792 | |
| 11793 | if (aChildPseudo < PseudoStyleType::NotPseudo) { |
| 11794 | // Non-inheriting anon boxes have no style parent frame at all. |
| 11795 | if (PseudoStyle::IsNonInheritingAnonBox(aChildPseudo)) { |
| 11796 | return nullptr; |
| 11797 | } |
| 11798 | |
| 11799 | // Other anon boxes are parented to their actual parent already, except |
| 11800 | // for non-elements. Those should not be treated as an anon box. |
| 11801 | if (PseudoStyle::IsAnonBox(aChildPseudo) && |
| 11802 | !PseudoStyle::IsNonElement(aChildPseudo)) { |
| 11803 | NS_ASSERTION(aChildPseudo != PseudoStyleType::MozBlockInsideInlineWrapper,do { if (!(aChildPseudo != PseudoStyleType::MozBlockInsideInlineWrapper )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Should have dealt with kids that have " "NS_FRAME_PART_OF_IBSPLIT elsewhere", "aChildPseudo != PseudoStyleType::MozBlockInsideInlineWrapper" , "./../../../layout/generic/nsIFrame.cpp", 11805); MOZ_PretendNoReturn (); } } while (0) |
| 11804 | "Should have dealt with kids that have "do { if (!(aChildPseudo != PseudoStyleType::MozBlockInsideInlineWrapper )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Should have dealt with kids that have " "NS_FRAME_PART_OF_IBSPLIT elsewhere", "aChildPseudo != PseudoStyleType::MozBlockInsideInlineWrapper" , "./../../../layout/generic/nsIFrame.cpp", 11805); MOZ_PretendNoReturn (); } } while (0) |
| 11805 | "NS_FRAME_PART_OF_IBSPLIT elsewhere")do { if (!(aChildPseudo != PseudoStyleType::MozBlockInsideInlineWrapper )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Should have dealt with kids that have " "NS_FRAME_PART_OF_IBSPLIT elsewhere", "aChildPseudo != PseudoStyleType::MozBlockInsideInlineWrapper" , "./../../../layout/generic/nsIFrame.cpp", 11805); MOZ_PretendNoReturn (); } } while (0); |
| 11806 | return aProspectiveParent; |
| 11807 | } |
| 11808 | } |
| 11809 | |
| 11810 | // Otherwise, walk up out of all anon boxes. For placeholder frames, walk out |
| 11811 | // of all pseudo-elements as well. Otherwise ReparentComputedStyle could |
| 11812 | // cause style data to be out of sync with the frame tree. |
| 11813 | nsIFrame* parent = aProspectiveParent; |
| 11814 | do { |
| 11815 | if (parent->HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)) { |
| 11816 | nsIFrame* sibling = GetIBSplitSiblingForAnonymousBlock(parent); |
| 11817 | |
| 11818 | if (sibling) { |
| 11819 | // |parent| was a block in an {ib} split; use the inline as |
| 11820 | // |the style parent. |
| 11821 | parent = sibling; |
| 11822 | } |
| 11823 | } |
| 11824 | |
| 11825 | if (!parent->Style()->IsPseudoOrAnonBox()) { |
| 11826 | return parent; |
| 11827 | } |
| 11828 | |
| 11829 | if (!parent->Style()->IsAnonBox() && aChildPseudo != PseudoStyleType::MAX) { |
| 11830 | // nsPlaceholderFrame passes in PseudoStyleType::MAX for |
| 11831 | // aChildPseudo (even though that's not a valid pseudo-type) just to |
| 11832 | // trigger this behavior of walking up to the nearest non-pseudo |
| 11833 | // ancestor. |
| 11834 | return parent; |
| 11835 | } |
| 11836 | |
| 11837 | parent = parent->GetInFlowParent(); |
| 11838 | } while (parent); |
| 11839 | |
| 11840 | if (aProspectiveParent->Style()->GetPseudoType() == |
| 11841 | PseudoStyleType::MozViewportScroll) { |
| 11842 | // aProspectiveParent is the scrollframe for a viewport |
| 11843 | // and the kids are the anonymous scrollbars |
| 11844 | return aProspectiveParent; |
| 11845 | } |
| 11846 | |
| 11847 | // We can get here if the root element is absolutely positioned. |
| 11848 | // We can't test for this very accurately, but it can only happen |
| 11849 | // when the prospective parent is a canvas frame. |
| 11850 | NS_ASSERTION(aProspectiveParent->IsCanvasFrame(),do { if (!(aProspectiveParent->IsCanvasFrame())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Should have found a parent before this" , "aProspectiveParent->IsCanvasFrame()", "./../../../layout/generic/nsIFrame.cpp" , 11851); MOZ_PretendNoReturn(); } } while (0) |
| 11851 | "Should have found a parent before this")do { if (!(aProspectiveParent->IsCanvasFrame())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Should have found a parent before this" , "aProspectiveParent->IsCanvasFrame()", "./../../../layout/generic/nsIFrame.cpp" , 11851); MOZ_PretendNoReturn(); } } while (0); |
| 11852 | return nullptr; |
| 11853 | } |
| 11854 | |
| 11855 | ComputedStyle* nsIFrame::DoGetParentComputedStyle( |
| 11856 | nsIFrame** aProviderFrame) const { |
| 11857 | *aProviderFrame = nullptr; |
| 11858 | |
| 11859 | // Handle display:contents and the root frame, when there's no parent frame |
| 11860 | // to inherit from. |
| 11861 | if (MOZ_LIKELY(mContent)(__builtin_expect(!!(mContent), 1))) { |
| 11862 | Element* parentElement = mContent->GetFlattenedTreeParentElement(); |
| 11863 | if (MOZ_LIKELY(parentElement)(__builtin_expect(!!(parentElement), 1))) { |
| 11864 | auto pseudo = Style()->GetPseudoType(); |
| 11865 | if (pseudo == PseudoStyleType::NotPseudo || !mContent->IsElement() || |
| 11866 | (!PseudoStyle::IsAnonBox(pseudo) && |
| 11867 | // Ensure that we don't return the display:contents style |
| 11868 | // of the parent content for pseudos that have the same content |
| 11869 | // as their primary frame (like -moz-list-bullets do): |
| 11870 | IsPrimaryFrame()) || |
| 11871 | /* if next is true then it's really a request for the table frame's |
| 11872 | parent context, see nsTable[Outer]Frame::GetParentComputedStyle. */ |
| 11873 | pseudo == PseudoStyleType::MozTableWrapper) { |
| 11874 | // In some edge cases involving display: contents, we may end up here |
| 11875 | // for something that's pending to be reframed. In this case we return |
| 11876 | // the wrong style from here (because we've already lost track of it!), |
| 11877 | // but it's not a big deal as we're going to be reframed anyway. |
| 11878 | if (MOZ_LIKELY(parentElement->HasServoData())(__builtin_expect(!!(parentElement->HasServoData()), 1)) && |
| 11879 | Servo_Element_IsDisplayContents(parentElement)) { |
| 11880 | RefPtr<ComputedStyle> style = |
| 11881 | ServoStyleSet::ResolveServoStyle(*parentElement); |
| 11882 | // NOTE(emilio): we return a weak reference because the element also |
| 11883 | // holds the style context alive. This is a bit silly (we could've |
| 11884 | // returned a weak ref directly), but it's probably not worth |
| 11885 | // optimizing, given this function has just one caller which is rare, |
| 11886 | // and this path is rare itself. |
| 11887 | return style; |
| 11888 | } |
| 11889 | } |
| 11890 | } else { |
| 11891 | if (Style()->GetPseudoType() == PseudoStyleType::NotPseudo) { |
| 11892 | // We're a frame for the root. We have no style parent. |
| 11893 | return nullptr; |
| 11894 | } |
| 11895 | } |
| 11896 | } |
| 11897 | |
| 11898 | if (!HasAnyStateBits(NS_FRAME_OUT_OF_FLOW)) { |
| 11899 | /* |
| 11900 | * If this frame is an anonymous block created when an inline with a block |
| 11901 | * inside it got split, then the parent style is on its preceding inline. We |
| 11902 | * can get to it using GetIBSplitSiblingForAnonymousBlock. |
| 11903 | */ |
| 11904 | if (HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)) { |
| 11905 | nsIFrame* ibSplitSibling = GetIBSplitSiblingForAnonymousBlock(this); |
| 11906 | if (ibSplitSibling) { |
| 11907 | return (*aProviderFrame = ibSplitSibling)->Style(); |
| 11908 | } |
| 11909 | } |
| 11910 | |
| 11911 | // If this frame is one of the blocks that split an inline, we must |
| 11912 | // return the "special" inline parent, i.e., the parent that this |
| 11913 | // frame would have if we didn't mangle the frame structure. |
| 11914 | *aProviderFrame = GetCorrectedParent(this); |
| 11915 | return *aProviderFrame ? (*aProviderFrame)->Style() : nullptr; |
| 11916 | } |
| 11917 | |
| 11918 | // We're an out-of-flow frame. For out-of-flow frames, we must |
| 11919 | // resolve underneath the placeholder's parent. The placeholder is |
| 11920 | // reached from the first-in-flow. |
| 11921 | nsPlaceholderFrame* placeholder = FirstInFlow()->GetPlaceholderFrame(); |
| 11922 | if (!placeholder) { |
| 11923 | MOZ_ASSERT_UNREACHABLE("no placeholder frame for out-of-flow frame")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "no placeholder frame for out-of-flow frame" ")", "./../../../layout/generic/nsIFrame.cpp" , 11923); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "no placeholder frame for out-of-flow frame" ")"); do { MOZ_CrashSequence(__null, 11923); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11924 | *aProviderFrame = GetCorrectedParent(this); |
| 11925 | return *aProviderFrame ? (*aProviderFrame)->Style() : nullptr; |
| 11926 | } |
| 11927 | return placeholder->GetParentComputedStyleForOutOfFlow(aProviderFrame); |
| 11928 | } |
| 11929 | |
| 11930 | void nsIFrame::GetLastLeaf(nsIFrame** aFrame) { |
| 11931 | if (!aFrame || !*aFrame) { |
| 11932 | return; |
| 11933 | } |
| 11934 | for (nsIFrame* maybeLastLeaf = (*aFrame)->PrincipalChildList().LastChild(); |
| 11935 | maybeLastLeaf;) { |
| 11936 | nsIFrame* lastChildNotInSubTree = nullptr; |
| 11937 | for (nsIFrame* child = maybeLastLeaf; child; |
| 11938 | child = child->GetPrevSibling()) { |
| 11939 | // ignore anonymous elements, e.g. mozTableAdd* mozTableRemove* |
| 11940 | // see bug 278197 comment #12 #13 for details |
| 11941 | if (!child->ContentIsRootOfNativeAnonymousSubtree()) { |
| 11942 | lastChildNotInSubTree = child; |
| 11943 | break; |
| 11944 | } |
| 11945 | } |
| 11946 | if (!lastChildNotInSubTree) { |
| 11947 | return; |
| 11948 | } |
| 11949 | *aFrame = lastChildNotInSubTree; |
| 11950 | maybeLastLeaf = lastChildNotInSubTree->PrincipalChildList().LastChild(); |
| 11951 | } |
| 11952 | } |
| 11953 | |
| 11954 | void nsIFrame::GetFirstLeaf(nsIFrame** aFrame) { |
| 11955 | if (!aFrame || !*aFrame) { |
| 11956 | return; |
| 11957 | } |
| 11958 | nsIFrame* child = *aFrame; |
| 11959 | while (true) { |
| 11960 | child = child->PrincipalChildList().FirstChild(); |
| 11961 | if (!child) { |
| 11962 | return; // nothing to do |
| 11963 | } |
| 11964 | *aFrame = child; |
| 11965 | } |
| 11966 | } |
| 11967 | |
| 11968 | bool nsIFrame::IsFocusableDueToScrollFrame() { |
| 11969 | if (!IsScrollContainerFrame()) { |
| 11970 | if (nsFieldSetFrame* fieldset = do_QueryFrame(this)) { |
| 11971 | // TODO: Do we have similar special-cases like this where we can have |
| 11972 | // anonymous scrollable boxes hanging off a primary frame? |
| 11973 | if (nsIFrame* inner = fieldset->GetInner()) { |
| 11974 | return inner->IsFocusableDueToScrollFrame(); |
| 11975 | } |
| 11976 | } |
| 11977 | return false; |
| 11978 | } |
| 11979 | if (!mContent->IsHTMLElement()) { |
| 11980 | return false; |
| 11981 | } |
| 11982 | if (Style()->IsPseudoElement()) { |
| 11983 | return false; |
| 11984 | } |
| 11985 | if (mContent->IsRootOfNativeAnonymousSubtree()) { |
| 11986 | return false; |
| 11987 | } |
| 11988 | if (!mContent->GetParent()) { |
| 11989 | return false; |
| 11990 | } |
| 11991 | if (mContent->AsElement()->HasAttr(nsGkAtoms::tabindex)) { |
| 11992 | return false; |
| 11993 | } |
| 11994 | // Elements with scrollable view are focusable with script & tabbable |
| 11995 | // Otherwise you couldn't scroll them with keyboard, which is an accessibility |
| 11996 | // issue (e.g. Section 508 rules) However, we don't make them to be focusable |
| 11997 | // with the mouse, because the extra focus outlines are considered |
| 11998 | // unnecessarily ugly. When clicked on, the selection position within the |
| 11999 | // element will be enough to make them keyboard scrollable. |
| 12000 | auto* scrollContainer = static_cast<ScrollContainerFrame*>(this); |
| 12001 | if (scrollContainer->GetScrollStyles().IsHiddenInBothDirections()) { |
| 12002 | return false; |
| 12003 | } |
| 12004 | if (scrollContainer->GetScrollRangeForUserInputEvents().IsEqualEdges( |
| 12005 | nsRect())) { |
| 12006 | return false; |
| 12007 | } |
| 12008 | return true; |
| 12009 | } |
| 12010 | |
| 12011 | Focusable nsIFrame::IsFocusable(IsFocusableFlags aFlags) { |
| 12012 | // cannot focus content in print preview mode. Only the root can be focused, |
| 12013 | // but that's handled elsewhere. |
| 12014 | if (PresContext()->Type() == nsPresContext::eContext_PrintPreview) { |
| 12015 | return {}; |
| 12016 | } |
| 12017 | |
| 12018 | if (!mContent || !mContent->IsElement()) { |
| 12019 | return {}; |
| 12020 | } |
| 12021 | |
| 12022 | if (!(aFlags & IsFocusableFlags::IgnoreVisibility) && |
| 12023 | !IsVisibleConsideringAncestors()) { |
| 12024 | return {}; |
| 12025 | } |
| 12026 | |
| 12027 | const StyleUserFocus uf = StyleUI()->UserFocus(); |
| 12028 | if (uf == StyleUserFocus::None) { |
| 12029 | return {}; |
| 12030 | } |
| 12031 | MOZ_ASSERT(!StyleUI()->IsInert(), "inert implies -moz-user-focus: none")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!StyleUI()->IsInert())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!StyleUI()->IsInert()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!StyleUI()->IsInert()" " (" "inert implies -moz-user-focus: none" ")", "./../../../layout/generic/nsIFrame.cpp" , 12031); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!StyleUI()->IsInert()" ") (" "inert implies -moz-user-focus: none" ")"); do { MOZ_CrashSequence (__null, 12031); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 12032 | |
| 12033 | const PseudoStyleType pseudo = Style()->GetPseudoType(); |
| 12034 | if (pseudo == PseudoStyleType::MozAnonymousItem) { |
| 12035 | return {}; |
| 12036 | } |
| 12037 | |
| 12038 | Focusable focusable; |
| 12039 | if (auto* xul = nsXULElement::FromNode(mContent)) { |
| 12040 | // As a legacy special-case, -moz-user-focus controls focusability and |
| 12041 | // tabability of XUL elements in some circumstances (which default to |
| 12042 | // -moz-user-focus: ignore). |
| 12043 | auto focusability = xul->GetXULFocusability(aFlags); |
| 12044 | focusable.mFocusable = |
| 12045 | focusability.mForcedFocusable.valueOr(uf == StyleUserFocus::Normal); |
| 12046 | if (focusable) { |
| 12047 | focusable.mTabIndex = focusability.mForcedTabIndexIfFocusable.valueOr(0); |
| 12048 | } |
| 12049 | } else { |
| 12050 | focusable = mContent->IsFocusableWithoutStyle(aFlags); |
| 12051 | } |
| 12052 | |
| 12053 | if (focusable) { |
| 12054 | return focusable; |
| 12055 | } |
| 12056 | |
| 12057 | // If we're focusing with the mouse we never focus scroll areas. |
| 12058 | if (!(aFlags & IsFocusableFlags::WithMouse) && |
| 12059 | IsFocusableDueToScrollFrame()) { |
| 12060 | return {true, 0}; |
| 12061 | } |
| 12062 | |
| 12063 | // FIXME(emilio): some callers rely on somewhat broken return values |
| 12064 | // (focusable = false, but non-negative tab-index) from |
| 12065 | // IsFocusableWithoutStyle (for image maps in particular). |
| 12066 | return focusable; |
| 12067 | } |
| 12068 | |
| 12069 | /** |
| 12070 | * @return true if this text frame ends with a newline character which is |
| 12071 | * treated as preformatted. It should return false if this is not a text frame. |
| 12072 | */ |
| 12073 | bool nsIFrame::HasSignificantTerminalNewline() const { return false; } |
| 12074 | |
| 12075 | static StyleAlignmentBaseline ConvertSVGDominantBaselineToAlignmentBaseline( |
| 12076 | StyleDominantBaseline aDominantBaseline) { |
| 12077 | // Most of these are approximate mappings. |
| 12078 | switch (aDominantBaseline) { |
| 12079 | case StyleDominantBaseline::Hanging: |
| 12080 | case StyleDominantBaseline::TextTop: |
| 12081 | return StyleAlignmentBaseline::TextTop; |
| 12082 | case StyleDominantBaseline::TextBottom: |
| 12083 | case StyleDominantBaseline::Ideographic: |
| 12084 | return StyleAlignmentBaseline::TextBottom; |
| 12085 | case StyleDominantBaseline::Central: |
| 12086 | case StyleDominantBaseline::Middle: |
| 12087 | case StyleDominantBaseline::Mathematical: |
| 12088 | return StyleAlignmentBaseline::Middle; |
| 12089 | case StyleDominantBaseline::Auto: |
| 12090 | case StyleDominantBaseline::Alphabetic: |
| 12091 | return StyleAlignmentBaseline::Baseline; |
| 12092 | default: |
| 12093 | MOZ_ASSERT_UNREACHABLE("unexpected aDominantBaseline value")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "unexpected aDominantBaseline value" ")", "./../../../layout/generic/nsIFrame.cpp" , 12093); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "unexpected aDominantBaseline value" ")"); do { MOZ_CrashSequence(__null, 12093); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12094 | return StyleAlignmentBaseline::Baseline; |
| 12095 | } |
| 12096 | } |
| 12097 | |
| 12098 | StyleDominantBaseline nsIFrame::DominantBaseline() const { |
| 12099 | auto dominantBaseline = StyleVisibility()->mDominantBaseline; |
| 12100 | if (dominantBaseline != StyleDominantBaseline::Auto) { |
| 12101 | return dominantBaseline; |
| 12102 | } |
| 12103 | // https://drafts.csswg.org/css-inline-3/#alignment-baseline-property |
| 12104 | // > Equivalent to alphabetic in horizontal writing modes and |
| 12105 | // > in vertical writing modes when text-orientation is sideways. |
| 12106 | // > Equivalent to central in vertical writing modes when |
| 12107 | // > text-orientation is mixed or upright. |
| 12108 | return GetWritingMode().IsCentralBaseline() |
| 12109 | ? StyleDominantBaseline::Central |
| 12110 | : StyleDominantBaseline::Alphabetic; |
| 12111 | } |
| 12112 | |
| 12113 | StyleAlignmentBaseline nsIFrame::AlignmentBaseline() const { |
| 12114 | if (IsInSVGTextSubtree()) { |
| 12115 | // TODO Bug 2010721 - Implement alignment-baseline directly for SVG |
| 12116 | // text elements instead of only approximating from dominant-baseline. |
| 12117 | auto dominantBaseline = StyleVisibility()->mDominantBaseline; |
| 12118 | return ConvertSVGDominantBaselineToAlignmentBaseline(dominantBaseline); |
| 12119 | } |
| 12120 | |
| 12121 | if (IsTableCellFrame()) { |
| 12122 | // The alignment-baseline / vertical-align property on a table cell is used |
| 12123 | // to align its children (see nsTableCellFrame::GetTableCellAlignment), but |
| 12124 | // does not affect the alignment of the cell itself within its row. |
| 12125 | return StyleAlignmentBaseline::Baseline; |
| 12126 | } |
| 12127 | |
| 12128 | if (StyleDisplay()->mAlignmentBaseline == StyleAlignmentBaseline::Baseline) { |
| 12129 | // The CSS Inline Layout specification says `alignment-baseline: baseline` |
| 12130 | // uses the dominant baseline choice of the parent. |
| 12131 | auto dominantBaseline = |
| 12132 | GetParent() ? GetParent()->DominantBaseline() : DominantBaseline(); |
| 12133 | switch (dominantBaseline) { |
| 12134 | case StyleDominantBaseline::TextBottom: |
| 12135 | return StyleAlignmentBaseline::TextBottom; |
| 12136 | case StyleDominantBaseline::Alphabetic: |
| 12137 | return StyleAlignmentBaseline::Alphabetic; |
| 12138 | case StyleDominantBaseline::Ideographic: |
| 12139 | return StyleAlignmentBaseline::Ideographic; |
| 12140 | case StyleDominantBaseline::Middle: |
| 12141 | return StyleAlignmentBaseline::Middle; |
| 12142 | case StyleDominantBaseline::Central: |
| 12143 | return StyleAlignmentBaseline::Central; |
| 12144 | case StyleDominantBaseline::Mathematical: |
| 12145 | return StyleAlignmentBaseline::Mathematical; |
| 12146 | case StyleDominantBaseline::Hanging: |
| 12147 | return StyleAlignmentBaseline::Hanging; |
| 12148 | case StyleDominantBaseline::TextTop: |
| 12149 | return StyleAlignmentBaseline::TextTop; |
| 12150 | case StyleDominantBaseline::Auto: |
| 12151 | MOZ_ASSERT_UNREACHABLE("Auto is resolved in DominantBaseline()")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Auto is resolved in DominantBaseline()" ")", "./../../../layout/generic/nsIFrame.cpp" , 12151); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Auto is resolved in DominantBaseline()" ")"); do { MOZ_CrashSequence(__null, 12151); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12152 | break; |
| 12153 | } |
| 12154 | } |
| 12155 | |
| 12156 | return StyleDisplay()->mAlignmentBaseline; |
| 12157 | } |
| 12158 | |
| 12159 | void nsIFrame::UpdateStyleOfChildAnonBox(nsIFrame* aChildFrame, |
| 12160 | ServoRestyleState& aRestyleState) { |
| 12161 | #ifdef DEBUG1 |
| 12162 | nsIFrame* parent = aChildFrame->GetInFlowParent(); |
| 12163 | if (aChildFrame->IsTableFrame()) { |
| 12164 | parent = parent->GetParent(); |
| 12165 | } |
| 12166 | if (parent->IsLineFrame()) { |
| 12167 | parent = parent->GetParent(); |
| 12168 | } |
| 12169 | MOZ_ASSERT(nsLayoutUtils::FirstContinuationOrIBSplitSibling(parent) == this,do { static_assert( mozilla::detail::AssertionConditionType< decltype(nsLayoutUtils::FirstContinuationOrIBSplitSibling(parent ) == this)>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(nsLayoutUtils::FirstContinuationOrIBSplitSibling (parent) == this))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("nsLayoutUtils::FirstContinuationOrIBSplitSibling(parent) == this" " (" "This should only be used for children!" ")", "./../../../layout/generic/nsIFrame.cpp" , 12170); AnnotateMozCrashReason("MOZ_ASSERT" "(" "nsLayoutUtils::FirstContinuationOrIBSplitSibling(parent) == this" ") (" "This should only be used for children!" ")"); do { MOZ_CrashSequence (__null, 12170); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 12170 | "This should only be used for children!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(nsLayoutUtils::FirstContinuationOrIBSplitSibling(parent ) == this)>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(nsLayoutUtils::FirstContinuationOrIBSplitSibling (parent) == this))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("nsLayoutUtils::FirstContinuationOrIBSplitSibling(parent) == this" " (" "This should only be used for children!" ")", "./../../../layout/generic/nsIFrame.cpp" , 12170); AnnotateMozCrashReason("MOZ_ASSERT" "(" "nsLayoutUtils::FirstContinuationOrIBSplitSibling(parent) == this" ") (" "This should only be used for children!" ")"); do { MOZ_CrashSequence (__null, 12170); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 12171 | #endif // DEBUG |
| 12172 | MOZ_ASSERT(!GetContent() || !aChildFrame->GetContent() ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(!GetContent() || !aChildFrame->GetContent() || aChildFrame ->GetContent() == GetContent())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!GetContent() || !aChildFrame ->GetContent() || aChildFrame->GetContent() == GetContent ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!GetContent() || !aChildFrame->GetContent() || aChildFrame->GetContent() == GetContent()" " (" "What content node is it a frame for?" ")", "./../../../layout/generic/nsIFrame.cpp" , 12174); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!GetContent() || !aChildFrame->GetContent() || aChildFrame->GetContent() == GetContent()" ") (" "What content node is it a frame for?" ")"); do { MOZ_CrashSequence (__null, 12174); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 12173 | aChildFrame->GetContent() == GetContent(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!GetContent() || !aChildFrame->GetContent() || aChildFrame ->GetContent() == GetContent())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!GetContent() || !aChildFrame ->GetContent() || aChildFrame->GetContent() == GetContent ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!GetContent() || !aChildFrame->GetContent() || aChildFrame->GetContent() == GetContent()" " (" "What content node is it a frame for?" ")", "./../../../layout/generic/nsIFrame.cpp" , 12174); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!GetContent() || !aChildFrame->GetContent() || aChildFrame->GetContent() == GetContent()" ") (" "What content node is it a frame for?" ")"); do { MOZ_CrashSequence (__null, 12174); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 12174 | "What content node is it a frame for?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!GetContent() || !aChildFrame->GetContent() || aChildFrame ->GetContent() == GetContent())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!GetContent() || !aChildFrame ->GetContent() || aChildFrame->GetContent() == GetContent ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!GetContent() || !aChildFrame->GetContent() || aChildFrame->GetContent() == GetContent()" " (" "What content node is it a frame for?" ")", "./../../../layout/generic/nsIFrame.cpp" , 12174); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!GetContent() || !aChildFrame->GetContent() || aChildFrame->GetContent() == GetContent()" ") (" "What content node is it a frame for?" ")"); do { MOZ_CrashSequence (__null, 12174); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 12175 | MOZ_ASSERT(!aChildFrame->GetPrevContinuation(),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aChildFrame->GetPrevContinuation())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!aChildFrame->GetPrevContinuation()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aChildFrame->GetPrevContinuation()" " (" "Only first continuations should end up here" ")", "./../../../layout/generic/nsIFrame.cpp" , 12176); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aChildFrame->GetPrevContinuation()" ") (" "Only first continuations should end up here" ")"); do { MOZ_CrashSequence(__null, 12176); __attribute__((nomerge)) ::abort(); } while (false); } } while (false) |
| 12176 | "Only first continuations should end up here")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aChildFrame->GetPrevContinuation())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!aChildFrame->GetPrevContinuation()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aChildFrame->GetPrevContinuation()" " (" "Only first continuations should end up here" ")", "./../../../layout/generic/nsIFrame.cpp" , 12176); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aChildFrame->GetPrevContinuation()" ") (" "Only first continuations should end up here" ")"); do { MOZ_CrashSequence(__null, 12176); __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 12177 | |
| 12178 | // We could force the caller to pass in the pseudo, since some callers know it |
| 12179 | // statically... But this API is a bit nicer. |
| 12180 | auto pseudo = aChildFrame->Style()->GetPseudoType(); |
| 12181 | MOZ_ASSERT(PseudoStyle::IsAnonBox(pseudo), "Child is not an anon box?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(PseudoStyle::IsAnonBox(pseudo))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(PseudoStyle::IsAnonBox(pseudo )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("PseudoStyle::IsAnonBox(pseudo)" " (" "Child is not an anon box?" ")", "./../../../layout/generic/nsIFrame.cpp", 12181); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "PseudoStyle::IsAnonBox(pseudo)" ") (" "Child is not an anon box?" ")"); do { MOZ_CrashSequence(__null, 12181); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12182 | MOZ_ASSERT(!PseudoStyle::IsNonInheritingAnonBox(pseudo),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!PseudoStyle::IsNonInheritingAnonBox(pseudo))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!PseudoStyle::IsNonInheritingAnonBox(pseudo)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!PseudoStyle::IsNonInheritingAnonBox(pseudo)" " (" "Why did the caller bother calling us?" ")", "./../../../layout/generic/nsIFrame.cpp" , 12183); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!PseudoStyle::IsNonInheritingAnonBox(pseudo)" ") (" "Why did the caller bother calling us?" ")"); do { MOZ_CrashSequence (__null, 12183); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 12183 | "Why did the caller bother calling us?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!PseudoStyle::IsNonInheritingAnonBox(pseudo))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!PseudoStyle::IsNonInheritingAnonBox(pseudo)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!PseudoStyle::IsNonInheritingAnonBox(pseudo)" " (" "Why did the caller bother calling us?" ")", "./../../../layout/generic/nsIFrame.cpp" , 12183); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!PseudoStyle::IsNonInheritingAnonBox(pseudo)" ") (" "Why did the caller bother calling us?" ")"); do { MOZ_CrashSequence (__null, 12183); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 12184 | |
| 12185 | // Anon boxes inherit from their parent; that's us. |
| 12186 | RefPtr<ComputedStyle> newContext = |
| 12187 | aRestyleState.StyleSet().ResolveInheritingAnonymousBoxStyle(pseudo, |
| 12188 | Style()); |
| 12189 | |
| 12190 | nsChangeHint childHint = |
| 12191 | UpdateStyleOfOwnedChildFrame(aChildFrame, newContext, aRestyleState); |
| 12192 | |
| 12193 | // Now that we've updated the style on aChildFrame, check whether it itself |
| 12194 | // has anon boxes to deal with. |
| 12195 | ServoRestyleState childrenState(*aChildFrame, aRestyleState, childHint, |
| 12196 | ServoRestyleState::CanUseHandledHints::Yes); |
| 12197 | aChildFrame->UpdateStyleOfOwnedAnonBoxes(childrenState); |
| 12198 | |
| 12199 | // Assuming anon boxes don't have ::backdrop associated with them... if that |
| 12200 | // ever changes, we'd need to handle that here, like we do in |
| 12201 | // RestyleManager::ProcessPostTraversal |
| 12202 | |
| 12203 | // We do need to handle block pseudo-elements here, though. Especially list |
| 12204 | // bullets. |
| 12205 | if (nsBlockFrame* block = do_QueryFrame(aChildFrame)) { |
| 12206 | block->UpdatePseudoElementStyles(childrenState); |
| 12207 | } |
| 12208 | } |
| 12209 | |
| 12210 | /* static */ |
| 12211 | nsChangeHint nsIFrame::UpdateStyleOfOwnedChildFrame( |
| 12212 | nsIFrame* aChildFrame, ComputedStyle* aNewComputedStyle, |
| 12213 | ServoRestyleState& aRestyleState, |
| 12214 | const Maybe<ComputedStyle*>& aContinuationComputedStyle) { |
| 12215 | // Figure out whether we have an actual change. It's important that we do |
| 12216 | // this, for several reasons: |
| 12217 | // |
| 12218 | // 1) Even if all the child's changes are due to properties it inherits from |
| 12219 | // us, it's possible that no one ever asked us for those style structs and |
| 12220 | // hence changes to them aren't reflected in the changes handled at all. |
| 12221 | // |
| 12222 | // 2) Content can change stylesheets that change the styles of pseudos, and |
| 12223 | // extensions can add/remove stylesheets that change the styles of |
| 12224 | // anonymous boxes directly. |
| 12225 | uint32_t equalStructs; // Not used, actually. |
| 12226 | nsChangeHint childHint = aChildFrame->Style()->CalcStyleDifference( |
| 12227 | *aNewComputedStyle, &equalStructs); |
| 12228 | |
| 12229 | // If aChildFrame is out of flow, then aRestyleState's "changes handled by the |
| 12230 | // parent" doesn't apply to it, because it may have some other parent in the |
| 12231 | // frame tree. |
| 12232 | if (!aChildFrame->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW)) { |
| 12233 | childHint = NS_RemoveSubsumedHints( |
| 12234 | childHint, aRestyleState.ChangesHandledFor(aChildFrame)); |
| 12235 | } |
| 12236 | if (childHint) { |
| 12237 | if (childHint & nsChangeHint_ReconstructFrame) { |
| 12238 | // If we generate a reconstruct here, remove any non-reconstruct hints we |
| 12239 | // may have already generated for this content. |
| 12240 | aRestyleState.ChangeList().PopChangesForContent( |
| 12241 | aChildFrame->GetContent()); |
| 12242 | } |
| 12243 | aRestyleState.ChangeList().AppendChange( |
| 12244 | aChildFrame, aChildFrame->GetContent(), childHint); |
| 12245 | } |
| 12246 | |
| 12247 | aChildFrame->SetComputedStyle(aNewComputedStyle); |
| 12248 | ComputedStyle* continuationStyle = aContinuationComputedStyle |
| 12249 | ? *aContinuationComputedStyle |
| 12250 | : aNewComputedStyle; |
| 12251 | for (nsIFrame* kid = aChildFrame->GetNextContinuation(); kid; |
| 12252 | kid = kid->GetNextContinuation()) { |
| 12253 | kid->SetComputedStyle(continuationStyle); |
| 12254 | } |
| 12255 | |
| 12256 | return childHint; |
| 12257 | } |
| 12258 | |
| 12259 | /* static */ |
| 12260 | void nsIFrame::AddInPopupStateBitToDescendants(nsIFrame* aFrame) { |
| 12261 | if (!aFrame->HasAnyStateBits(NS_FRAME_IN_POPUP) && |
| 12262 | aFrame->TrackingVisibility()) { |
| 12263 | // Assume all frames in popups are visible. |
| 12264 | aFrame->IncApproximateVisibleCount(); |
| 12265 | } |
| 12266 | |
| 12267 | aFrame->AddStateBits(NS_FRAME_IN_POPUP); |
| 12268 | |
| 12269 | for (const auto& childList : aFrame->CrossDocChildLists()) { |
| 12270 | for (nsIFrame* child : childList.mList) { |
| 12271 | AddInPopupStateBitToDescendants(child); |
| 12272 | } |
| 12273 | } |
| 12274 | } |
| 12275 | |
| 12276 | /* static */ |
| 12277 | void nsIFrame::RemoveInPopupStateBitFromDescendants(nsIFrame* aFrame) { |
| 12278 | if (!aFrame->HasAnyStateBits(NS_FRAME_IN_POPUP) || |
| 12279 | nsLayoutUtils::IsPopup(aFrame)) { |
| 12280 | return; |
| 12281 | } |
| 12282 | |
| 12283 | aFrame->RemoveStateBits(NS_FRAME_IN_POPUP); |
| 12284 | |
| 12285 | if (aFrame->TrackingVisibility()) { |
| 12286 | // We assume all frames in popups are visible, so this decrement balances |
| 12287 | // out the increment in AddInPopupStateBitToDescendants above. |
| 12288 | aFrame->DecApproximateVisibleCount(); |
| 12289 | } |
| 12290 | for (const auto& childList : aFrame->CrossDocChildLists()) { |
| 12291 | for (nsIFrame* child : childList.mList) { |
| 12292 | RemoveInPopupStateBitFromDescendants(child); |
| 12293 | } |
| 12294 | } |
| 12295 | } |
| 12296 | |
| 12297 | void nsIFrame::SetParent(nsContainerFrame* aParent) { |
| 12298 | // If our parent is a wrapper anon box, our new parent should be too. We |
| 12299 | // _can_ change parent if our parent is a wrapper anon box, because some |
| 12300 | // wrapper anon boxes can have continuations. |
| 12301 | MOZ_ASSERT_IF(ParentIsWrapperAnonBox(),do { if (ParentIsWrapperAnonBox()) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(aParent->Style ()->IsInheritingAnonBox())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aParent->Style()->IsInheritingAnonBox ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aParent->Style()->IsInheritingAnonBox()", "./../../../layout/generic/nsIFrame.cpp" , 12302); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent->Style()->IsInheritingAnonBox()" ")"); do { MOZ_CrashSequence(__null, 12302); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); } } while (false) |
| 12302 | aParent->Style()->IsInheritingAnonBox())do { if (ParentIsWrapperAnonBox()) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(aParent->Style ()->IsInheritingAnonBox())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aParent->Style()->IsInheritingAnonBox ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aParent->Style()->IsInheritingAnonBox()", "./../../../layout/generic/nsIFrame.cpp" , 12302); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent->Style()->IsInheritingAnonBox()" ")"); do { MOZ_CrashSequence(__null, 12302); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); } } while (false); |
| 12303 | |
| 12304 | // Note that the current mParent may already be destroyed at this point. |
| 12305 | mParent = aParent; |
| 12306 | MOZ_ASSERT(!mParent || PresShell() == mParent->PresShell())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mParent || PresShell() == mParent->PresShell())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!mParent || PresShell() == mParent->PresShell())) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!mParent || PresShell() == mParent->PresShell()" , "./../../../layout/generic/nsIFrame.cpp", 12306); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!mParent || PresShell() == mParent->PresShell()" ")"); do { MOZ_CrashSequence(__null, 12306); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12307 | |
| 12308 | nsFrameState flagsToPropagateSameDoc = |
| 12309 | GetStateBits() & (NS_FRAME_CONTAINS_RELATIVE_BSIZE | |
| 12310 | NS_FRAME_DESCENDANT_INTRINSIC_ISIZE_DEPENDS_ON_BSIZE); |
| 12311 | if (flagsToPropagateSameDoc) { |
| 12312 | for (nsIFrame* f = aParent; f; f = f->GetParent()) { |
| 12313 | if (f->HasAllStateBits(flagsToPropagateSameDoc)) { |
| 12314 | break; |
| 12315 | } |
| 12316 | f->AddStateBits(flagsToPropagateSameDoc); |
| 12317 | } |
| 12318 | } |
| 12319 | |
| 12320 | if (HasInvalidFrameInSubtree()) { |
| 12321 | for (nsIFrame* f = aParent; |
| 12322 | f && !f->HasAnyStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT | |
| 12323 | NS_FRAME_IS_NONDISPLAY); |
| 12324 | f = nsLayoutUtils::GetCrossDocParentFrameInProcess(f)) { |
| 12325 | f->AddStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT); |
| 12326 | } |
| 12327 | } |
| 12328 | |
| 12329 | if (aParent->HasAnyStateBits(NS_FRAME_IN_POPUP)) { |
| 12330 | AddInPopupStateBitToDescendants(this); |
| 12331 | } else { |
| 12332 | RemoveInPopupStateBitFromDescendants(this); |
| 12333 | } |
| 12334 | |
| 12335 | // If our new parent only has invalid children, then we just invalidate |
| 12336 | // ourselves too. This is probably faster than clearing the flag all |
| 12337 | // the way up the frame tree. |
| 12338 | if (aParent->HasAnyStateBits(NS_FRAME_ALL_DESCENDANTS_NEED_PAINT)) { |
| 12339 | InvalidateFrame(); |
| 12340 | } else { |
| 12341 | SchedulePaint(); |
| 12342 | } |
| 12343 | } |
| 12344 | |
| 12345 | bool nsIFrame::IsStackingContext(const nsStyleDisplay* aStyleDisplay, |
| 12346 | const nsStyleEffects* aStyleEffects) { |
| 12347 | // Properties that influence the output of this function should be handled in |
| 12348 | // change_bits_for_longhand as well. |
| 12349 | if (HasOpacity(aStyleDisplay, aStyleEffects, nullptr)) { |
| 12350 | return true; |
| 12351 | } |
| 12352 | if (IsTransformed()) { |
| 12353 | return true; |
| 12354 | } |
| 12355 | auto willChange = aStyleDisplay->mWillChange.bits; |
| 12356 | if (aStyleDisplay->IsContainPaint() || aStyleDisplay->IsContainLayout() || |
| 12357 | willChange & StyleWillChangeBits::CONTAIN) { |
| 12358 | if (SupportsContainLayoutAndPaint()) { |
| 12359 | return true; |
| 12360 | } |
| 12361 | } |
| 12362 | |
| 12363 | if (ForcesStackingContextForViewTransition()) { |
| 12364 | return true; |
| 12365 | } |
| 12366 | |
| 12367 | // strictly speaking, 'perspective' doesn't require visual atomicity, |
| 12368 | // but the spec says it acts like the rest of these |
| 12369 | if (aStyleDisplay->HasPerspectiveStyle() || |
| 12370 | willChange & StyleWillChangeBits::PERSPECTIVE) { |
| 12371 | if (SupportsCSSTransforms()) { |
| 12372 | return true; |
| 12373 | } |
| 12374 | } |
| 12375 | if (!StylePosition()->mZIndex.IsAuto() || |
| 12376 | willChange & StyleWillChangeBits::Z_INDEX) { |
| 12377 | if (ZIndexApplies()) { |
| 12378 | return true; |
| 12379 | } |
| 12380 | } |
| 12381 | // Elements captured in a view transition during a view transition or whose |
| 12382 | // view-transition-name computed value is not none (at any time) form a s |
| 12383 | // https://drafts.csswg.org/css-view-transitions-1/#named-and-transitioning |
| 12384 | return aStyleEffects->mMixBlendMode != StyleBlend::Normal || |
| 12385 | SVGIntegrationUtils::UsingEffectsForFrame(this) || |
| 12386 | aStyleDisplay->IsPositionForcingStackingContext() || |
| 12387 | aStyleDisplay->mIsolation != StyleIsolation::Auto || |
| 12388 | willChange & StyleWillChangeBits::STACKING_CONTEXT_UNCONDITIONAL; |
| 12389 | } |
| 12390 | |
| 12391 | bool nsIFrame::IsStackingContext() { |
| 12392 | return IsStackingContext(StyleDisplay(), StyleEffects()); |
| 12393 | } |
| 12394 | |
| 12395 | static bool IsFrameRectScrolledOutOfView(const nsIFrame* aTarget, |
| 12396 | const nsRect& aTargetRect, |
| 12397 | const nsIFrame* aParent) { |
| 12398 | // The ancestor frame we are checking if it clips out aTargetRect relative to |
| 12399 | // aTarget. |
| 12400 | nsIFrame* clipParent = nullptr; |
| 12401 | |
| 12402 | // find the first scrollable frame or root frame if we are in a fixed pos |
| 12403 | // subtree |
| 12404 | for (nsIFrame* f = const_cast<nsIFrame*>(aParent); f; |
| 12405 | f = nsLayoutUtils::GetCrossDocParentFrameInProcess(f)) { |
| 12406 | ScrollContainerFrame* scrollContainerFrame = do_QueryFrame(f); |
| 12407 | if (scrollContainerFrame) { |
| 12408 | clipParent = f; |
| 12409 | break; |
| 12410 | } |
| 12411 | if (f->StyleDisplay()->mPosition == StylePositionProperty::Fixed && |
| 12412 | nsLayoutUtils::IsReallyFixedPos(f)) { |
| 12413 | clipParent = f->GetParent(); |
| 12414 | break; |
| 12415 | } |
| 12416 | } |
| 12417 | |
| 12418 | if (!clipParent) { |
| 12419 | // Even if we couldn't find the nearest scrollable frame, it might mean we |
| 12420 | // are in an out-of-process iframe, try to see if |aTarget| frame is |
| 12421 | // scrolled out of view in an scrollable frame in a cross-process ancestor |
| 12422 | // document. |
| 12423 | return nsLayoutUtils::FrameRectIsScrolledOutOfViewInCrossProcess( |
| 12424 | aTarget, aTargetRect); |
| 12425 | } |
| 12426 | |
| 12427 | nsRect clipRect = clipParent->InkOverflowRectRelativeToSelf(); |
| 12428 | // We consider that the target is scrolled out if the scrollable (or root) |
| 12429 | // frame is empty. |
| 12430 | if (clipRect.IsEmpty()) { |
| 12431 | return true; |
| 12432 | } |
| 12433 | |
| 12434 | nsRect transformedRect = nsLayoutUtils::TransformFrameRectToAncestor( |
| 12435 | aTarget, aTargetRect, clipParent); |
| 12436 | |
| 12437 | if (transformedRect.IsEmpty()) { |
| 12438 | // If the transformed rect is empty it represents a line or a point that we |
| 12439 | // should check is outside the the scrollable rect. |
| 12440 | if (transformedRect.x > clipRect.XMost() || |
| 12441 | transformedRect.y > clipRect.YMost() || |
| 12442 | clipRect.x > transformedRect.XMost() || |
| 12443 | clipRect.y > transformedRect.YMost()) { |
| 12444 | return true; |
| 12445 | } |
| 12446 | } else if (!transformedRect.Intersects(clipRect)) { |
| 12447 | return true; |
| 12448 | } |
| 12449 | |
| 12450 | nsIFrame* parent = clipParent->GetParent(); |
| 12451 | if (!parent) { |
| 12452 | return false; |
| 12453 | } |
| 12454 | |
| 12455 | return IsFrameRectScrolledOutOfView(clipParent, transformedRect, parent); |
| 12456 | } |
| 12457 | |
| 12458 | bool nsIFrame::IsScrolledOutOfView() const { |
| 12459 | nsRect rect = InkOverflowRectRelativeToSelf(); |
| 12460 | return IsFrameRectScrolledOutOfView(this, rect, this); |
| 12461 | } |
| 12462 | |
| 12463 | gfx::Matrix nsIFrame::ComputeWidgetTransform() const { |
| 12464 | const nsStyleUIReset* uiReset = StyleUIReset(); |
| 12465 | if (uiReset->mMozWindowTransform.IsNone()) { |
| 12466 | return gfx::Matrix(); |
| 12467 | } |
| 12468 | |
| 12469 | TransformReferenceBox refBox(this); |
| 12470 | |
| 12471 | int32_t appUnitsPerDevPixel = PresContext()->AppUnitsPerDevPixel(); |
| 12472 | gfx::Matrix4x4 matrix = nsStyleTransformMatrix::ReadTransforms( |
| 12473 | uiReset->mMozWindowTransform, refBox, float(appUnitsPerDevPixel), |
| 12474 | nsStyleTransformMatrix::Zoomed::Yes); |
| 12475 | |
| 12476 | // Apply the transform-origin translation to the matrix. |
| 12477 | const StyleTransformOrigin& origin = StyleDisplay()->mTransformOrigin; |
| 12478 | Point transformOrigin = nsStyleTransformMatrix::Convert2DPosition( |
| 12479 | origin.horizontal, origin.vertical, refBox, appUnitsPerDevPixel); |
| 12480 | matrix.ChangeBasis(Point3D(transformOrigin.x, transformOrigin.y, 0)); |
| 12481 | |
| 12482 | gfx::Matrix result2d; |
| 12483 | if (!matrix.CanDraw2D(&result2d)) { |
| 12484 | // FIXME: It would be preferable to reject non-2D transforms at parse time. |
| 12485 | NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, "-moz-window-transform does not describe a 2D transform, " "but only 2d transforms are supported", nullptr, "./../../../layout/generic/nsIFrame.cpp" , 12487) |
| 12486 | "-moz-window-transform does not describe a 2D transform, "NS_DebugBreak(NS_DEBUG_WARNING, "-moz-window-transform does not describe a 2D transform, " "but only 2d transforms are supported", nullptr, "./../../../layout/generic/nsIFrame.cpp" , 12487) |
| 12487 | "but only 2d transforms are supported")NS_DebugBreak(NS_DEBUG_WARNING, "-moz-window-transform does not describe a 2D transform, " "but only 2d transforms are supported", nullptr, "./../../../layout/generic/nsIFrame.cpp" , 12487); |
| 12488 | return gfx::Matrix(); |
| 12489 | } |
| 12490 | |
| 12491 | return result2d; |
| 12492 | } |
| 12493 | |
| 12494 | void nsIFrame::DoUpdateStyleOfOwnedAnonBoxes(ServoRestyleState& aRestyleState) { |
| 12495 | // As a special case, we check for {ib}-split block frames here, rather |
| 12496 | // than have an nsInlineFrame::AppendDirectlyOwnedAnonBoxes implementation |
| 12497 | // that returns them. |
| 12498 | // |
| 12499 | // (If we did handle them in AppendDirectlyOwnedAnonBoxes, we would have to |
| 12500 | // return *all* of the in-flow {ib}-split block frames, not just the first |
| 12501 | // one. For restyling, we really just need the first in flow, and the other |
| 12502 | // user of the AppendOwnedAnonBoxes API, AllChildIterator, doesn't need to |
| 12503 | // know about them at all, since these block frames never create NAC. So we |
| 12504 | // avoid any unncessary hashtable lookups for the {ib}-split frames by calling |
| 12505 | // UpdateStyleOfOwnedAnonBoxesForIBSplit directly here.) |
| 12506 | if (IsInlineFrame()) { |
| 12507 | if (HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)) { |
| 12508 | static_cast<nsInlineFrame*>(this)->UpdateStyleOfOwnedAnonBoxesForIBSplit( |
| 12509 | aRestyleState); |
| 12510 | } |
| 12511 | return; |
| 12512 | } |
| 12513 | |
| 12514 | AutoTArray<OwnedAnonBox, 4> frames; |
| 12515 | AppendDirectlyOwnedAnonBoxes(frames); |
| 12516 | for (OwnedAnonBox& box : frames) { |
| 12517 | if (box.mUpdateStyleFn) { |
| 12518 | box.mUpdateStyleFn(this, box.mAnonBoxFrame, aRestyleState); |
| 12519 | } else { |
| 12520 | UpdateStyleOfChildAnonBox(box.mAnonBoxFrame, aRestyleState); |
| 12521 | } |
| 12522 | } |
| 12523 | } |
| 12524 | |
| 12525 | /* virtual */ |
| 12526 | void nsIFrame::AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) { |
| 12527 | MOZ_ASSERT(!HasAnyStateBits(NS_FRAME_OWNS_ANON_BOXES))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_FRAME_OWNS_ANON_BOXES))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!HasAnyStateBits(NS_FRAME_OWNS_ANON_BOXES)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_FRAME_OWNS_ANON_BOXES)" , "./../../../layout/generic/nsIFrame.cpp", 12527); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_FRAME_OWNS_ANON_BOXES)" ")"); do { MOZ_CrashSequence(__null, 12527); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12528 | MOZ_ASSERT_UNREACHABLE(do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Subclasses that have directly owned anonymous boxes should override " "this method!" ")", "./../../../layout/generic/nsIFrame.cpp" , 12530); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Subclasses that have directly owned anonymous boxes should override " "this method!" ")"); do { MOZ_CrashSequence(__null, 12530); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 12529 | "Subclasses that have directly owned anonymous boxes should override "do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Subclasses that have directly owned anonymous boxes should override " "this method!" ")", "./../../../layout/generic/nsIFrame.cpp" , 12530); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Subclasses that have directly owned anonymous boxes should override " "this method!" ")"); do { MOZ_CrashSequence(__null, 12530); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 12530 | "this method!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Subclasses that have directly owned anonymous boxes should override " "this method!" ")", "./../../../layout/generic/nsIFrame.cpp" , 12530); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Subclasses that have directly owned anonymous boxes should override " "this method!" ")"); do { MOZ_CrashSequence(__null, 12530); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false); |
| 12531 | } |
| 12532 | |
| 12533 | void nsIFrame::DoAppendOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) { |
| 12534 | size_t i = aResult.Length(); |
| 12535 | AppendDirectlyOwnedAnonBoxes(aResult); |
| 12536 | |
| 12537 | // After appending the directly owned anonymous boxes of this frame to |
| 12538 | // aResult above, we need to check each of them to see if they own |
| 12539 | // any anonymous boxes themselves. Note that we keep progressing |
| 12540 | // through aResult, looking for additional entries in aResult from these |
| 12541 | // subsequent AppendDirectlyOwnedAnonBoxes calls. (Thus we can't |
| 12542 | // use a ranged for loop here.) |
| 12543 | |
| 12544 | while (i < aResult.Length()) { |
| 12545 | nsIFrame* f = aResult[i].mAnonBoxFrame; |
| 12546 | if (f->HasAnyStateBits(NS_FRAME_OWNS_ANON_BOXES)) { |
| 12547 | f->AppendDirectlyOwnedAnonBoxes(aResult); |
| 12548 | } |
| 12549 | ++i; |
| 12550 | } |
| 12551 | } |
| 12552 | |
| 12553 | nsIFrame::CaretPosition::CaretPosition() : mContentOffset(0) {} |
| 12554 | |
| 12555 | nsIFrame::CaretPosition::~CaretPosition() = default; |
| 12556 | |
| 12557 | bool nsIFrame::HasCSSAnimations() { |
| 12558 | auto* collection = AnimationCollection<CSSAnimation>::Get(this); |
| 12559 | return collection && !collection->mAnimations.IsEmpty(); |
| 12560 | } |
| 12561 | |
| 12562 | bool nsIFrame::HasCSSTransitions() { |
| 12563 | auto* collection = AnimationCollection<CSSTransition>::Get(this); |
| 12564 | return collection && !collection->mAnimations.IsEmpty(); |
| 12565 | } |
| 12566 | |
| 12567 | void nsIFrame::AddSizeOfExcludingThisForTree(nsWindowSizes& aSizes) const { |
| 12568 | aSizes.mLayoutFramePropertiesSize += |
| 12569 | mProperties.SizeOfExcludingThis(aSizes.mState.mMallocSizeOf); |
| 12570 | |
| 12571 | // We don't do this for Gecko because this stuff is stored in the nsPresArena |
| 12572 | // and so measured elsewhere. |
| 12573 | if (!aSizes.mState.HaveSeenPtr(mComputedStyle)) { |
| 12574 | mComputedStyle->AddSizeOfIncludingThis(aSizes, |
| 12575 | &aSizes.mLayoutComputedValuesNonDom); |
| 12576 | } |
| 12577 | |
| 12578 | for (const auto& childList : ChildLists()) { |
| 12579 | for (const nsIFrame* f : childList.mList) { |
| 12580 | f->AddSizeOfExcludingThisForTree(aSizes); |
| 12581 | } |
| 12582 | } |
| 12583 | } |
| 12584 | |
| 12585 | nsRect nsIFrame::GetCompositorHitTestArea(nsDisplayListBuilder* aBuilder) { |
| 12586 | nsRect area; |
| 12587 | |
| 12588 | ScrollContainerFrame* scrollContainerFrame = |
| 12589 | nsLayoutUtils::GetScrollContainerFrameFor(this); |
| 12590 | if (scrollContainerFrame) { |
| 12591 | // If this frame is the scrolled frame of a scroll container frame, then we |
| 12592 | // need to pick up the area corresponding to the overflow rect as well. |
| 12593 | // Otherwise the parts of the overflow that are not occupied by descendants |
| 12594 | // get skipped and the APZ code sends touch events to the content underneath |
| 12595 | // instead. See https://bugzilla.mozilla.org/show_bug.cgi?id=1127773#c15. |
| 12596 | area = ScrollableOverflowRect(); |
| 12597 | } else { |
| 12598 | area = GetRectRelativeToSelf(); |
| 12599 | } |
| 12600 | |
| 12601 | if (!area.IsEmpty()) { |
| 12602 | return area + aBuilder->ToReferenceFrame(this); |
| 12603 | } |
| 12604 | |
| 12605 | return area; |
| 12606 | } |
| 12607 | |
| 12608 | CompositorHitTestInfo nsIFrame::GetCompositorHitTestInfo( |
| 12609 | nsDisplayListBuilder* aBuilder) { |
| 12610 | CompositorHitTestInfo result = CompositorHitTestInvisibleToHit; |
| 12611 | if (Style()->PointerEvents() == StylePointerEvents::None) { |
| 12612 | return result; |
| 12613 | } |
| 12614 | return GetCompositorHitTestInfoWithoutPointerEvents(aBuilder); |
| 12615 | } |
| 12616 | |
| 12617 | CompositorHitTestInfo nsIFrame::GetCompositorHitTestInfoWithoutPointerEvents( |
| 12618 | nsDisplayListBuilder* aBuilder) { |
| 12619 | CompositorHitTestInfo result = CompositorHitTestInvisibleToHit; |
| 12620 | |
| 12621 | if (aBuilder->IsInsidePointerEventsNoneDoc() || |
| 12622 | aBuilder->IsInViewTransitionCapture()) { |
| 12623 | // Somewhere up the parent document chain is a subdocument with pointer- |
| 12624 | // events:none set on it, or we're getting captured in a view transition. |
| 12625 | return result; |
| 12626 | } |
| 12627 | if (!GetParent()) { |
| 12628 | MOZ_ASSERT(IsViewportFrame())do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsViewportFrame())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(IsViewportFrame()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsViewportFrame()" , "./../../../layout/generic/nsIFrame.cpp", 12628); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "IsViewportFrame()" ")"); do { MOZ_CrashSequence (__null, 12628); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 12629 | // Viewport frames are never event targets, other frames, like canvas |
| 12630 | // frames, are the event targets for any regions viewport frames may cover. |
| 12631 | return result; |
| 12632 | } |
| 12633 | if (!StyleVisibility()->IsVisible()) { |
| 12634 | return result; |
| 12635 | } |
| 12636 | |
| 12637 | // Anything that didn't match the above conditions is visible to hit-testing. |
| 12638 | result = CompositorHitTestFlags::eVisibleToHitTest; |
| 12639 | SVGUtils::MaskUsage maskUsage = SVGUtils::DetermineMaskUsage(this, false); |
| 12640 | if (maskUsage.UsingMaskOrClipPath()) { |
| 12641 | // If WebRender is enabled, simple clip-paths can be converted into WR |
| 12642 | // clips that WR knows how to hit-test against, so we don't need to mark |
| 12643 | // it as an irregular area. |
| 12644 | if (!maskUsage.IsSimpleClipShape()) { |
| 12645 | result += CompositorHitTestFlags::eIrregularArea; |
| 12646 | } |
| 12647 | } |
| 12648 | |
| 12649 | if (aBuilder->IsBuildingNonLayerizedScrollbar()) { |
| 12650 | // Scrollbars may be painted into a layer below the actual layer they will |
| 12651 | // scroll, and therefore wheel events may be dispatched to the outer frame |
| 12652 | // instead of the intended scrollframe. To address this, we force a d-t-c |
| 12653 | // region on scrollbar frames that won't be placed in their own layer. See |
| 12654 | // bug 1213324 for details. |
| 12655 | result += CompositorHitTestFlags::eInactiveScrollframe; |
| 12656 | } else if (aBuilder->GetAncestorHasApzAwareEventHandler()) { |
| 12657 | result += CompositorHitTestFlags::eApzAwareListeners; |
| 12658 | } else if (IsRangeFrame()) { |
| 12659 | // Range frames handle touch events directly without having a touch listener |
| 12660 | // so we need to let APZ know that this area cares about events. |
| 12661 | result += CompositorHitTestFlags::eApzAwareListeners; |
| 12662 | } |
| 12663 | |
| 12664 | if (aBuilder->IsTouchEventPrefEnabledDoc()) { |
| 12665 | // Inherit the touch-action flags from the parent, if there is one. We do |
| 12666 | // this because of how the touch-action on a frame combines the touch-action |
| 12667 | // from ancestor DOM elements. Refer to the documentation in |
| 12668 | // TouchActionHelper.cpp for details; this code is meant to be equivalent to |
| 12669 | // that code, but woven into the top-down recursive display list building |
| 12670 | // process. |
| 12671 | CompositorHitTestInfo inheritedTouchAction = |
| 12672 | aBuilder->GetInheritedCompositorHitTestInfo() & |
| 12673 | CompositorHitTestTouchActionMask; |
| 12674 | |
| 12675 | nsIFrame* touchActionFrame = this; |
| 12676 | if (ScrollContainerFrame* scrollContainerFrame = |
| 12677 | nsLayoutUtils::GetScrollContainerFrameFor(this)) { |
| 12678 | ScrollStyles ss = scrollContainerFrame->GetScrollStyles(); |
| 12679 | if (ss.mVertical != StyleOverflow::Hidden || |
| 12680 | ss.mHorizontal != StyleOverflow::Hidden) { |
| 12681 | touchActionFrame = scrollContainerFrame; |
| 12682 | // On scrollframes, stop inheriting the pan-x and pan-y flags; instead, |
| 12683 | // reset them back to zero to allow panning on the scrollframe unless we |
| 12684 | // encounter an element that disables it that's inside the scrollframe. |
| 12685 | // This is equivalent to the |considerPanning| variable in |
| 12686 | // TouchActionHelper.cpp, but for a top-down traversal. |
| 12687 | CompositorHitTestInfo panMask( |
| 12688 | CompositorHitTestFlags::eTouchActionPanXDisabled, |
| 12689 | CompositorHitTestFlags::eTouchActionPanYDisabled); |
| 12690 | inheritedTouchAction -= panMask; |
| 12691 | } |
| 12692 | } |
| 12693 | |
| 12694 | result += inheritedTouchAction; |
| 12695 | |
| 12696 | const StyleTouchAction touchAction = touchActionFrame->UsedTouchAction(); |
| 12697 | // The CSS allows the syntax auto | none | [pan-x || pan-y] | manipulation |
| 12698 | // so we can eliminate some combinations of things. |
| 12699 | if (touchAction == StyleTouchAction::AUTO) { |
| 12700 | // nothing to do |
| 12701 | } else if (touchAction & StyleTouchAction::MANIPULATION) { |
| 12702 | result += CompositorHitTestFlags::eTouchActionAnimatingZoomDisabled; |
| 12703 | } else { |
| 12704 | // This path handles the cases none | [pan-x || pan-y || pinch-zoom] so |
| 12705 | // double-tap is disabled in here. |
| 12706 | if (!(touchAction & StyleTouchAction::PINCH_ZOOM)) { |
| 12707 | result += CompositorHitTestFlags::eTouchActionPinchZoomDisabled; |
| 12708 | } |
| 12709 | |
| 12710 | result += CompositorHitTestFlags::eTouchActionAnimatingZoomDisabled; |
| 12711 | |
| 12712 | if (!(touchAction & StyleTouchAction::PAN_X)) { |
| 12713 | result += CompositorHitTestFlags::eTouchActionPanXDisabled; |
| 12714 | } |
| 12715 | if (!(touchAction & StyleTouchAction::PAN_Y)) { |
| 12716 | result += CompositorHitTestFlags::eTouchActionPanYDisabled; |
| 12717 | } |
| 12718 | if (touchAction & StyleTouchAction::NONE) { |
| 12719 | // all the touch-action disabling flags will already have been set above |
| 12720 | MOZ_ASSERT(result.contains(CompositorHitTestTouchActionMask))do { static_assert( mozilla::detail::AssertionConditionType< decltype(result.contains(CompositorHitTestTouchActionMask))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(result.contains(CompositorHitTestTouchActionMask)))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("result.contains(CompositorHitTestTouchActionMask)" , "./../../../layout/generic/nsIFrame.cpp", 12720); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "result.contains(CompositorHitTestTouchActionMask)" ")"); do { MOZ_CrashSequence(__null, 12720); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12721 | } |
| 12722 | } |
| 12723 | } |
| 12724 | |
| 12725 | const Maybe<ScrollDirection> scrollDirection = |
| 12726 | aBuilder->GetCurrentScrollbarDirection(); |
| 12727 | if (scrollDirection.isSome()) { |
| 12728 | if (GetContent()->IsXULElement(nsGkAtoms::thumb)) { |
| 12729 | const bool thumbGetsLayer = aBuilder->GetCurrentScrollbarTarget() != |
| 12730 | layers::ScrollableLayerGuid::NULL_SCROLL_ID; |
| 12731 | if (thumbGetsLayer) { |
| 12732 | result += CompositorHitTestFlags::eScrollbarThumb; |
| 12733 | } else { |
| 12734 | result += CompositorHitTestFlags::eInactiveScrollframe; |
| 12735 | } |
| 12736 | } |
| 12737 | |
| 12738 | if (*scrollDirection == ScrollDirection::eVertical) { |
| 12739 | result += CompositorHitTestFlags::eScrollbarVertical; |
| 12740 | } |
| 12741 | |
| 12742 | // includes the ScrollbarFrame, SliderFrame, anything else that |
| 12743 | // might be inside the xul:scrollbar |
| 12744 | result += CompositorHitTestFlags::eScrollbar; |
| 12745 | } |
| 12746 | |
| 12747 | return result; |
| 12748 | } |
| 12749 | |
| 12750 | // Returns true if we can guarantee there is no visible descendants. |
| 12751 | static bool HasNoVisibleDescendants(const nsIFrame* aFrame) { |
| 12752 | for (const auto& childList : aFrame->ChildLists()) { |
| 12753 | for (nsIFrame* f : childList.mList) { |
| 12754 | if (nsPlaceholderFrame::GetRealFrameFor(f) |
| 12755 | ->IsVisibleOrMayHaveVisibleDescendants()) { |
| 12756 | return false; |
| 12757 | } |
| 12758 | } |
| 12759 | } |
| 12760 | return true; |
| 12761 | } |
| 12762 | |
| 12763 | void nsIFrame::UpdateVisibleDescendantsState() { |
| 12764 | if (StyleVisibility()->IsVisible()) { |
| 12765 | // Notify invisible ancestors that a visible descendant exists now. |
| 12766 | nsIFrame* ancestor; |
| 12767 | for (ancestor = GetInFlowParent(); |
| 12768 | ancestor && !ancestor->StyleVisibility()->IsVisible(); |
| 12769 | ancestor = ancestor->GetInFlowParent()) { |
| 12770 | ancestor->mAllDescendantsAreInvisible = false; |
| 12771 | } |
| 12772 | } else { |
| 12773 | mAllDescendantsAreInvisible = HasNoVisibleDescendants(this); |
| 12774 | } |
| 12775 | } |
| 12776 | |
| 12777 | PhysicalAxes nsIFrame::ShouldApplyOverflowClipping( |
| 12778 | const nsStyleDisplay* aDisp) const { |
| 12779 | MOZ_ASSERT(aDisp == StyleDisplay(), "Wrong display struct")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aDisp == StyleDisplay())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aDisp == StyleDisplay()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("aDisp == StyleDisplay()" " (" "Wrong display struct" ")", "./../../../layout/generic/nsIFrame.cpp" , 12779); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aDisp == StyleDisplay()" ") (" "Wrong display struct" ")"); do { MOZ_CrashSequence(__null , 12779); __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); |
| 12780 | |
| 12781 | if (IsScrollContainerOrSubclass()) { |
| 12782 | // Scrollers deal with overflow on their own. |
| 12783 | return {}; |
| 12784 | } |
| 12785 | |
| 12786 | // 'contain:paint', which we handle as 'overflow:clip' here. 'contain:paint' |
| 12787 | // should prevent all means of escaping that clipping (e.g. because it forms a |
| 12788 | // fixed-pos containing block). |
| 12789 | if (aDisp->IsContainPaint() && SupportsContainLayoutAndPaint()) { |
| 12790 | return kPhysicalAxesBoth; |
| 12791 | } |
| 12792 | |
| 12793 | // and overflow: scrollable that we should interpret as clip |
| 12794 | if (aDisp->IsScrollableOverflow()) { |
| 12795 | // REVIEW: these are the frame types that set up clipping. |
| 12796 | LayoutFrameType type = Type(); |
| 12797 | switch (type) { |
| 12798 | case LayoutFrameType::CheckboxRadio: |
| 12799 | case LayoutFrameType::ComboboxControl: |
| 12800 | case LayoutFrameType::Progress: |
| 12801 | case LayoutFrameType::Range: |
| 12802 | case LayoutFrameType::SubDocument: |
| 12803 | case LayoutFrameType::SVGForeignObject: |
| 12804 | case LayoutFrameType::SVGInnerSVG: |
| 12805 | case LayoutFrameType::SVGOuterSVG: |
| 12806 | case LayoutFrameType::SVGSymbol: |
| 12807 | case LayoutFrameType::Image: |
| 12808 | case LayoutFrameType::HTMLVideo: |
| 12809 | case LayoutFrameType::TableCell: |
| 12810 | return kPhysicalAxesBoth; |
| 12811 | case LayoutFrameType::Table: |
| 12812 | // Tables, for legacy reasons only clip when hidden in both directions, |
| 12813 | // and treat all other scrollable overflow values as `visible`. |
| 12814 | // This is (somewhat, since other browsers make this change at |
| 12815 | // computed-value time, see bug 1918789) interoperable css2-era |
| 12816 | // behavior. We might be able to change this, but not today. |
| 12817 | // See layout/reftests/table-overflow/bug785684-x.html |
| 12818 | return aDisp->mOverflowX == StyleOverflow::Hidden && |
| 12819 | aDisp->mOverflowY == StyleOverflow::Hidden |
| 12820 | ? kPhysicalAxesBoth |
| 12821 | : PhysicalAxes(); |
| 12822 | case LayoutFrameType::TextInput: |
| 12823 | // It has an anonymous scroll container frame that handles any overflow. |
| 12824 | return PhysicalAxes(); |
| 12825 | default: |
| 12826 | break; |
| 12827 | } |
| 12828 | if (IsSuppressedScrollableBlockForPrint()) { |
| 12829 | return kPhysicalAxesBoth; |
| 12830 | } |
| 12831 | } |
| 12832 | |
| 12833 | if (aDisp->mOverflowX == StyleOverflow::Clip || |
| 12834 | aDisp->mOverflowY == StyleOverflow::Clip) { |
| 12835 | // FIXME: we could use GetViewportScrollStylesOverrideElement() here instead |
| 12836 | // if that worked correctly in a print context. (see bug 1654667) |
| 12837 | const auto* element = Element::FromNodeOrNull(GetContent()); |
| 12838 | if (!element || |
| 12839 | !PresContext()->ElementWouldPropagateScrollStyles(*element)) { |
| 12840 | PhysicalAxes axes; |
| 12841 | if (aDisp->mOverflowX == StyleOverflow::Clip) { |
| 12842 | axes += PhysicalAxis::Horizontal; |
| 12843 | } |
| 12844 | if (aDisp->mOverflowY == StyleOverflow::Clip) { |
| 12845 | axes += PhysicalAxis::Vertical; |
| 12846 | } |
| 12847 | return axes; |
| 12848 | } |
| 12849 | } |
| 12850 | |
| 12851 | return PhysicalAxes(); |
| 12852 | } |
| 12853 | |
| 12854 | bool nsIFrame::IsSuppressedScrollableBlockForPrint() const { |
| 12855 | // This condition needs to match the suppressScrollFrame logic in the frame |
| 12856 | // constructor. |
| 12857 | if (!PresContext()->IsPaginated() || !IsBlockFrame() || |
| 12858 | !StyleDisplay()->IsScrollableOverflow() || |
| 12859 | !StyleDisplay()->IsBlockOutsideStyle() || |
| 12860 | mContent->IsInNativeAnonymousSubtree()) { |
| 12861 | return false; |
| 12862 | } |
| 12863 | if (auto* element = Element::FromNode(mContent); |
| 12864 | element && PresContext()->ElementWouldPropagateScrollStyles(*element)) { |
| 12865 | return false; |
| 12866 | } |
| 12867 | return true; |
| 12868 | } |
| 12869 | |
| 12870 | PhysicalAxes nsIFrame::GetAnchorPosCompensatingForScroll() const { |
| 12871 | if (!HasAnchorPosReference()) { |
| 12872 | return {}; |
| 12873 | } |
| 12874 | const auto* prop = GetProperty(AnchorPosReferences()); |
| 12875 | if (!prop) { |
| 12876 | return {}; |
| 12877 | } |
| 12878 | |
| 12879 | return prop->CompensatingForScrollAxes(); |
| 12880 | } |
| 12881 | |
| 12882 | bool nsIFrame::HasUnreflowedContainerQueryAncestor() const { |
| 12883 | // If this frame has done the first reflow, its ancestors are guaranteed to |
| 12884 | // have as well. |
| 12885 | if (!HasAnyStateBits(NS_FRAME_FIRST_REFLOW) || |
| 12886 | !PresContext()->HasContainerQueryFrames()) { |
| 12887 | return false; |
| 12888 | } |
| 12889 | for (nsIFrame* cur = GetInFlowParent(); cur; cur = cur->GetInFlowParent()) { |
| 12890 | if (!cur->HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) { |
| 12891 | // Done first reflow from this ancestor up, including query containers. |
| 12892 | return false; |
| 12893 | } |
| 12894 | if (cur->StyleDisplay()->IsQueryContainer()) { |
| 12895 | return true; |
| 12896 | } |
| 12897 | } |
| 12898 | // No query container from this frame up to root. |
| 12899 | return false; |
| 12900 | } |
| 12901 | |
| 12902 | bool nsIFrame::ShouldBreakBefore(const BreakType aBreakType) const { |
| 12903 | const auto* display = StyleDisplay(); |
| 12904 | return ShouldBreakBetween(display, display->mBreakBefore, aBreakType); |
| 12905 | } |
| 12906 | |
| 12907 | bool nsIFrame::ShouldBreakAfter(const BreakType aBreakType) const { |
| 12908 | const auto* display = StyleDisplay(); |
| 12909 | return ShouldBreakBetween(display, display->mBreakAfter, aBreakType); |
| 12910 | } |
| 12911 | |
| 12912 | bool nsIFrame::ShouldBreakBetween(const nsStyleDisplay* aDisplay, |
| 12913 | const StyleBreakBetween aBreakBetween, |
| 12914 | const BreakType aBreakType) const { |
| 12915 | const bool shouldBreakBetween = [&] { |
| 12916 | switch (aBreakBetween) { |
| 12917 | case StyleBreakBetween::Always: |
| 12918 | return true; |
| 12919 | case StyleBreakBetween::Auto: |
| 12920 | case StyleBreakBetween::Avoid: |
| 12921 | return false; |
| 12922 | case StyleBreakBetween::Page: |
| 12923 | case StyleBreakBetween::Left: |
| 12924 | case StyleBreakBetween::Right: |
| 12925 | return aBreakType == BreakType::Page; |
| 12926 | } |
| 12927 | MOZ_ASSERT_UNREACHABLE("Unknown break-between value!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Unknown break-between value!" ")", "./../../../layout/generic/nsIFrame.cpp" , 12927); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Unknown break-between value!" ")" ); do { MOZ_CrashSequence(__null, 12927); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 12928 | return false; |
| 12929 | }(); |
| 12930 | |
| 12931 | if (!shouldBreakBetween) { |
| 12932 | return false; |
| 12933 | } |
| 12934 | if (IsAbsolutelyPositioned(aDisplay)) { |
| 12935 | // 'break-before' and 'break-after' properties does not apply to |
| 12936 | // absolutely-positioned boxes. |
| 12937 | return false; |
| 12938 | } |
| 12939 | return true; |
| 12940 | } |
| 12941 | |
| 12942 | #ifdef DEBUG1 |
| 12943 | static void GetTagName(nsIFrame* aFrame, nsIContent* aContent, int aResultSize, |
| 12944 | char* aResult) { |
| 12945 | if (aContent) { |
| 12946 | snprintf(aResult, aResultSize, "%s@%p", |
| 12947 | nsAtomCString(aContent->NodeInfo()->NameAtom()).get(), aFrame); |
| 12948 | } else { |
| 12949 | snprintf(aResult, aResultSize, "@%p", aFrame); |
| 12950 | } |
| 12951 | } |
| 12952 | |
| 12953 | void nsIFrame::Trace(const char* aMethod, bool aEnter) { |
| 12954 | if (NS_FRAME_LOG_TEST(sFrameLogModule, NS_FRAME_TRACE_CALLS)(int(((mozilla::LogModule*)(sFrameLogModule))->Level()) & (0x1))) { |
| 12955 | char tagbuf[40]; |
| 12956 | GetTagName(this, mContent, sizeof(tagbuf), tagbuf); |
| 12957 | printf_stderr("%s: %s %s", tagbuf, aEnter ? "enter" : "exit", aMethod); |
| 12958 | } |
| 12959 | } |
| 12960 | |
| 12961 | void nsIFrame::Trace(const char* aMethod, bool aEnter, |
| 12962 | const nsReflowStatus& aStatus) { |
| 12963 | if (NS_FRAME_LOG_TEST(sFrameLogModule, NS_FRAME_TRACE_CALLS)(int(((mozilla::LogModule*)(sFrameLogModule))->Level()) & (0x1))) { |
| 12964 | char tagbuf[40]; |
| 12965 | GetTagName(this, mContent, sizeof(tagbuf), tagbuf); |
| 12966 | printf_stderr("%s: %s %s, status=%scomplete%s", tagbuf, |
| 12967 | aEnter ? "enter" : "exit", aMethod, |
| 12968 | aStatus.IsIncomplete() ? "not" : "", |
| 12969 | (aStatus.NextInFlowNeedsReflow()) ? "+reflow" : ""); |
| 12970 | } |
| 12971 | } |
| 12972 | |
| 12973 | void nsIFrame::TraceMsg(const char* aFormatString, ...) { |
| 12974 | if (NS_FRAME_LOG_TEST(sFrameLogModule, NS_FRAME_TRACE_CALLS)(int(((mozilla::LogModule*)(sFrameLogModule))->Level()) & (0x1))) { |
| 12975 | // Format arguments into a buffer |
| 12976 | char argbuf[200]; |
| 12977 | va_list ap; |
| 12978 | va_start(ap, aFormatString)__builtin_va_start(ap, aFormatString); |
| 12979 | VsprintfLiteral(argbuf, aFormatString, ap); |
| 12980 | va_end(ap)__builtin_va_end(ap); |
| 12981 | |
| 12982 | char tagbuf[40]; |
| 12983 | GetTagName(this, mContent, sizeof(tagbuf), tagbuf); |
| 12984 | printf_stderr("%s: %s", tagbuf, argbuf); |
| 12985 | } |
| 12986 | } |
| 12987 | |
| 12988 | void nsIFrame::VerifyDirtyBitSet(const nsFrameList& aFrameList) { |
| 12989 | for (nsIFrame* f : aFrameList) { |
| 12990 | NS_ASSERTION(f->HasAnyStateBits(NS_FRAME_IS_DIRTY), "dirty bit not set")do { if (!(f->HasAnyStateBits(NS_FRAME_IS_DIRTY))) { NS_DebugBreak (NS_DEBUG_ASSERTION, "dirty bit not set", "f->HasAnyStateBits(NS_FRAME_IS_DIRTY)" , "./../../../layout/generic/nsIFrame.cpp", 12990); MOZ_PretendNoReturn (); } } while (0); |
| 12991 | } |
| 12992 | } |
| 12993 | |
| 12994 | // Validation of SideIsVertical. |
| 12995 | # define CASE(side, result) \ |
| 12996 | static_assert(SideIsVertical(side) == result, "SideIsVertical is wrong") |
| 12997 | CASE(eSideTop, false); |
| 12998 | CASE(eSideRight, true); |
| 12999 | CASE(eSideBottom, false); |
| 13000 | CASE(eSideLeft, true); |
| 13001 | # undef CASE |
| 13002 | |
| 13003 | // Validation of HalfCornerIsX. |
| 13004 | # define CASE(corner, result) \ |
| 13005 | static_assert(HalfCornerIsX(corner) == result, "HalfCornerIsX is wrong") |
| 13006 | CASE(eCornerTopLeftX, true); |
| 13007 | CASE(eCornerTopLeftY, false); |
| 13008 | CASE(eCornerTopRightX, true); |
| 13009 | CASE(eCornerTopRightY, false); |
| 13010 | CASE(eCornerBottomRightX, true); |
| 13011 | CASE(eCornerBottomRightY, false); |
| 13012 | CASE(eCornerBottomLeftX, true); |
| 13013 | CASE(eCornerBottomLeftY, false); |
| 13014 | # undef CASE |
| 13015 | |
| 13016 | // Validation of HalfToFullCorner. |
| 13017 | # define CASE(corner, result) \ |
| 13018 | static_assert(HalfToFullCorner(corner) == result, \ |
| 13019 | "HalfToFullCorner is " \ |
| 13020 | "wrong") |
| 13021 | CASE(eCornerTopLeftX, eCornerTopLeft); |
| 13022 | CASE(eCornerTopLeftY, eCornerTopLeft); |
| 13023 | CASE(eCornerTopRightX, eCornerTopRight); |
| 13024 | CASE(eCornerTopRightY, eCornerTopRight); |
| 13025 | CASE(eCornerBottomRightX, eCornerBottomRight); |
| 13026 | CASE(eCornerBottomRightY, eCornerBottomRight); |
| 13027 | CASE(eCornerBottomLeftX, eCornerBottomLeft); |
| 13028 | CASE(eCornerBottomLeftY, eCornerBottomLeft); |
| 13029 | # undef CASE |
| 13030 | |
| 13031 | // Validation of FullToHalfCorner. |
| 13032 | # define CASE(corner, vert, result) \ |
| 13033 | static_assert(FullToHalfCorner(corner, vert) == result, \ |
| 13034 | "FullToHalfCorner is wrong") |
| 13035 | CASE(eCornerTopLeft, false, eCornerTopLeftX); |
| 13036 | CASE(eCornerTopLeft, true, eCornerTopLeftY); |
| 13037 | CASE(eCornerTopRight, false, eCornerTopRightX); |
| 13038 | CASE(eCornerTopRight, true, eCornerTopRightY); |
| 13039 | CASE(eCornerBottomRight, false, eCornerBottomRightX); |
| 13040 | CASE(eCornerBottomRight, true, eCornerBottomRightY); |
| 13041 | CASE(eCornerBottomLeft, false, eCornerBottomLeftX); |
| 13042 | CASE(eCornerBottomLeft, true, eCornerBottomLeftY); |
| 13043 | # undef CASE |
| 13044 | |
| 13045 | // Validation of SideToFullCorner. |
| 13046 | # define CASE(side, second, result) \ |
| 13047 | static_assert(SideToFullCorner(side, second) == result, \ |
| 13048 | "SideToFullCorner is wrong") |
| 13049 | CASE(eSideTop, false, eCornerTopLeft); |
| 13050 | CASE(eSideTop, true, eCornerTopRight); |
| 13051 | |
| 13052 | CASE(eSideRight, false, eCornerTopRight); |
| 13053 | CASE(eSideRight, true, eCornerBottomRight); |
| 13054 | |
| 13055 | CASE(eSideBottom, false, eCornerBottomRight); |
| 13056 | CASE(eSideBottom, true, eCornerBottomLeft); |
| 13057 | |
| 13058 | CASE(eSideLeft, false, eCornerBottomLeft); |
| 13059 | CASE(eSideLeft, true, eCornerTopLeft); |
| 13060 | # undef CASE |
| 13061 | |
| 13062 | // Validation of SideToHalfCorner. |
| 13063 | # define CASE(side, second, parallel, result) \ |
| 13064 | static_assert(SideToHalfCorner(side, second, parallel) == result, \ |
| 13065 | "SideToHalfCorner is wrong") |
| 13066 | CASE(eSideTop, false, true, eCornerTopLeftX); |
| 13067 | CASE(eSideTop, false, false, eCornerTopLeftY); |
| 13068 | CASE(eSideTop, true, true, eCornerTopRightX); |
| 13069 | CASE(eSideTop, true, false, eCornerTopRightY); |
| 13070 | |
| 13071 | CASE(eSideRight, false, false, eCornerTopRightX); |
| 13072 | CASE(eSideRight, false, true, eCornerTopRightY); |
| 13073 | CASE(eSideRight, true, false, eCornerBottomRightX); |
| 13074 | CASE(eSideRight, true, true, eCornerBottomRightY); |
| 13075 | |
| 13076 | CASE(eSideBottom, false, true, eCornerBottomRightX); |
| 13077 | CASE(eSideBottom, false, false, eCornerBottomRightY); |
| 13078 | CASE(eSideBottom, true, true, eCornerBottomLeftX); |
| 13079 | CASE(eSideBottom, true, false, eCornerBottomLeftY); |
| 13080 | |
| 13081 | CASE(eSideLeft, false, false, eCornerBottomLeftX); |
| 13082 | CASE(eSideLeft, false, true, eCornerBottomLeftY); |
| 13083 | CASE(eSideLeft, true, false, eCornerTopLeftX); |
| 13084 | CASE(eSideLeft, true, true, eCornerTopLeftY); |
| 13085 | # undef CASE |
| 13086 | |
| 13087 | #endif |