| File: | var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp |
| Warning: | line 4739, column 14 Value stored to 'end' during its initialization is never read |
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| 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| 2 | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
| 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| 6 | |
| 7 | // Main header first: |
| 8 | #include "SVGTextFrame.h" |
| 9 | |
| 10 | // Keep others in (case-insensitive) order: |
| 11 | #include "DOMSVGPoint.h" |
| 12 | #include "gfx2DGlue.h" |
| 13 | #include "gfxContext.h" |
| 14 | #include "gfxFont.h" |
| 15 | #include "gfxSkipChars.h" |
| 16 | #include "gfxTypes.h" |
| 17 | #include "gfxUtils.h" |
| 18 | #include "LookAndFeel.h" |
| 19 | #include "nsAlgorithm.h" |
| 20 | #include "nsBidiPresUtils.h" |
| 21 | #include "nsBlockFrame.h" |
| 22 | #include "nsCaret.h" |
| 23 | #include "nsContentUtils.h" |
| 24 | #include "nsGkAtoms.h" |
| 25 | #include "SVGPaintServerFrame.h" |
| 26 | #include "nsTArray.h" |
| 27 | #include "nsTextFrame.h" |
| 28 | #include "SVGAnimatedNumberList.h" |
| 29 | #include "SVGContentUtils.h" |
| 30 | #include "SVGContextPaint.h" |
| 31 | #include "SVGLengthList.h" |
| 32 | #include "SVGNumberList.h" |
| 33 | #include "nsLayoutUtils.h" |
| 34 | #include "nsFrameSelection.h" |
| 35 | #include "nsStyleStructInlines.h" |
| 36 | #include "mozilla/CaretAssociationHint.h" |
| 37 | #include "mozilla/DisplaySVGItem.h" |
| 38 | #include "mozilla/Likely.h" |
| 39 | #include "mozilla/PresShell.h" |
| 40 | #include "mozilla/SVGObserverUtils.h" |
| 41 | #include "mozilla/SVGOuterSVGFrame.h" |
| 42 | #include "mozilla/SVGUtils.h" |
| 43 | #include "mozilla/dom/DOMPointBinding.h" |
| 44 | #include "mozilla/dom/Selection.h" |
| 45 | #include "mozilla/dom/SVGGeometryElement.h" |
| 46 | #include "mozilla/dom/SVGRect.h" |
| 47 | #include "mozilla/dom/SVGTextContentElementBinding.h" |
| 48 | #include "mozilla/dom/SVGTextPathElement.h" |
| 49 | #include "mozilla/dom/Text.h" |
| 50 | #include "mozilla/gfx/2D.h" |
| 51 | #include "mozilla/gfx/PatternHelpers.h" |
| 52 | #include <algorithm> |
| 53 | #include <cmath> |
| 54 | #include <limits> |
| 55 | |
| 56 | using namespace mozilla::dom; |
| 57 | using namespace mozilla::dom::SVGTextContentElement_Binding; |
| 58 | using namespace mozilla::gfx; |
| 59 | using namespace mozilla::image; |
| 60 | |
| 61 | namespace mozilla { |
| 62 | |
| 63 | // ============================================================================ |
| 64 | // Utility functions |
| 65 | |
| 66 | /** |
| 67 | * Using the specified gfxSkipCharsIterator, converts an offset and length |
| 68 | * in original char indexes to skipped char indexes. |
| 69 | * |
| 70 | * @param aIterator The gfxSkipCharsIterator to use for the conversion. |
| 71 | * @param aOriginalOffset The original offset. |
| 72 | * @param aOriginalLength The original length. |
| 73 | */ |
| 74 | static gfxTextRun::Range ConvertOriginalToSkipped( |
| 75 | gfxSkipCharsIterator& aIterator, uint32_t aOriginalOffset, |
| 76 | uint32_t aOriginalLength) { |
| 77 | uint32_t start = aIterator.ConvertOriginalToSkipped(aOriginalOffset); |
| 78 | aIterator.AdvanceOriginal(aOriginalLength); |
| 79 | return gfxTextRun::Range(start, aIterator.GetSkippedOffset()); |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Converts an nsPoint from app units to user space units using the specified |
| 84 | * nsPresContext and returns it as a gfxPoint. |
| 85 | */ |
| 86 | static gfxPoint AppUnitsToGfxUnits(const nsPoint& aPoint, |
| 87 | const nsPresContext* aContext) { |
| 88 | return gfxPoint(aContext->AppUnitsToGfxUnits(aPoint.x), |
| 89 | aContext->AppUnitsToGfxUnits(aPoint.y)); |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Converts a gfxRect that is in app units to CSS pixels using the specified |
| 94 | * nsPresContext and returns it as a gfxRect. |
| 95 | */ |
| 96 | static gfxRect AppUnitsToFloatCSSPixels(const gfxRect& aRect, |
| 97 | const nsPresContext* aContext) { |
| 98 | return gfxRect(nsPresContext::AppUnitsToFloatCSSPixels(aRect.x), |
| 99 | nsPresContext::AppUnitsToFloatCSSPixels(aRect.y), |
| 100 | nsPresContext::AppUnitsToFloatCSSPixels(aRect.width), |
| 101 | nsPresContext::AppUnitsToFloatCSSPixels(aRect.height)); |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Returns whether a gfxPoint lies within a gfxRect. |
| 106 | */ |
| 107 | static bool Inside(const gfxRect& aRect, const gfxPoint& aPoint) { |
| 108 | return aPoint.x >= aRect.x && aPoint.x < aRect.XMost() && |
| 109 | aPoint.y >= aRect.y && aPoint.y < aRect.YMost(); |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Gets the measured ascent and descent of the text in the given nsTextFrame |
| 114 | * in app units. |
| 115 | * |
| 116 | * @param aFrame The text frame. |
| 117 | * @param aAscent The ascent in app units (output). |
| 118 | * @param aDescent The descent in app units (output). |
| 119 | */ |
| 120 | static void GetAscentAndDescentInAppUnits(nsTextFrame* aFrame, |
| 121 | gfxFloat& aAscent, |
| 122 | gfxFloat& aDescent) { |
| 123 | gfxSkipCharsIterator it = aFrame->EnsureTextRun(nsTextFrame::eInflated); |
| 124 | gfxTextRun* textRun = aFrame->GetTextRun(nsTextFrame::eInflated); |
| 125 | |
| 126 | gfxTextRun::Range range = ConvertOriginalToSkipped( |
| 127 | it, aFrame->GetContentOffset(), aFrame->GetContentLength()); |
| 128 | |
| 129 | textRun->GetLineHeightMetrics(range, aAscent, aDescent); |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Updates an interval by intersecting it with another interval. |
| 134 | * The intervals are specified using a start index and a length. |
| 135 | */ |
| 136 | static void IntersectInterval(uint32_t& aStart, uint32_t& aLength, |
| 137 | uint32_t aStartOther, uint32_t aLengthOther) { |
| 138 | uint32_t aEnd = aStart + aLength; |
| 139 | uint32_t aEndOther = aStartOther + aLengthOther; |
| 140 | |
| 141 | if (aStartOther >= aEnd || aStart >= aEndOther) { |
| 142 | aLength = 0; |
| 143 | } else { |
| 144 | if (aStartOther >= aStart) aStart = aStartOther; |
| 145 | aLength = std::min(aEnd, aEndOther) - aStart; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Intersects an interval as IntersectInterval does but by taking |
| 151 | * the offset and length of the other interval from a |
| 152 | * nsTextFrame::TrimmedOffsets object. |
| 153 | */ |
| 154 | static void TrimOffsets(uint32_t& aStart, uint32_t& aLength, |
| 155 | const nsTextFrame::TrimmedOffsets& aTrimmedOffsets) { |
| 156 | IntersectInterval(aStart, aLength, aTrimmedOffsets.mStart, |
| 157 | aTrimmedOffsets.mLength); |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * Returns the closest ancestor-or-self node that is not an SVG <a> |
| 162 | * element. |
| 163 | */ |
| 164 | static nsIContent* GetFirstNonAAncestor(nsIContent* aContent) { |
| 165 | while (aContent && aContent->IsSVGElement(nsGkAtoms::a)) { |
| 166 | aContent = aContent->GetParent(); |
| 167 | } |
| 168 | return aContent; |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Returns whether the given node is a text content element[1], taking into |
| 173 | * account whether it has a valid parent. |
| 174 | * |
| 175 | * For example, in: |
| 176 | * |
| 177 | * <svg xmlns="http://www.w3.org/2000/svg"> |
| 178 | * <text><a/><text/></text> |
| 179 | * <tspan/> |
| 180 | * </svg> |
| 181 | * |
| 182 | * true would be returned for the outer <text> element and the <a> element, |
| 183 | * and false for the inner <text> element (since a <text> is not allowed |
| 184 | * to be a child of another <text>) and the <tspan> element (because it |
| 185 | * must be inside a <text> subtree). |
| 186 | * |
| 187 | * Note that we don't support the <tref> element yet and this function |
| 188 | * returns false for it. |
| 189 | * |
| 190 | * [1] https://svgwg.org/svg2-draft/intro.html#TermTextContentElement |
| 191 | */ |
| 192 | static bool IsTextContentElement(nsIContent* aContent) { |
| 193 | if (aContent->IsSVGElement(nsGkAtoms::text)) { |
| 194 | nsIContent* parent = GetFirstNonAAncestor(aContent->GetParent()); |
| 195 | return !parent || !IsTextContentElement(parent); |
| 196 | } |
| 197 | |
| 198 | if (aContent->IsSVGElement(nsGkAtoms::textPath)) { |
| 199 | nsIContent* parent = GetFirstNonAAncestor(aContent->GetParent()); |
| 200 | return parent && parent->IsSVGElement(nsGkAtoms::text); |
| 201 | } |
| 202 | |
| 203 | return aContent->IsAnyOfSVGElements(nsGkAtoms::a, nsGkAtoms::tspan); |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * Returns whether the specified frame is an nsTextFrame that has some text |
| 208 | * content. |
| 209 | */ |
| 210 | static bool IsNonEmptyTextFrame(nsIFrame* aFrame) { |
| 211 | nsTextFrame* textFrame = do_QueryFrame(aFrame); |
| 212 | if (!textFrame) { |
| 213 | return false; |
| 214 | } |
| 215 | |
| 216 | return textFrame->GetContentLength() != 0; |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * Takes an nsIFrame and if it is a text frame that has some text content, |
| 221 | * returns it as an nsTextFrame and its corresponding Text. |
| 222 | * |
| 223 | * @param aFrame The frame to look at. |
| 224 | * @param aTextFrame aFrame as an nsTextFrame (output). |
| 225 | * @param aTextNode The Text content of aFrame (output). |
| 226 | * @return true if aFrame is a non-empty text frame, false otherwise. |
| 227 | */ |
| 228 | static bool GetNonEmptyTextFrameAndNode(nsIFrame* aFrame, |
| 229 | nsTextFrame*& aTextFrame, |
| 230 | Text*& aTextNode) { |
| 231 | nsTextFrame* text = do_QueryFrame(aFrame); |
| 232 | bool isNonEmptyTextFrame = text && text->GetContentLength() != 0; |
| 233 | |
| 234 | if (isNonEmptyTextFrame) { |
| 235 | nsIContent* content = text->GetContent(); |
| 236 | NS_ASSERTION(content && content->IsText(),do { if (!(content && content->IsText())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "unexpected content type for nsTextFrame" , "content && content->IsText()", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 237); MOZ_PretendNoReturn(); } } while (0) |
| 237 | "unexpected content type for nsTextFrame")do { if (!(content && content->IsText())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "unexpected content type for nsTextFrame" , "content && content->IsText()", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 237); MOZ_PretendNoReturn(); } } while (0); |
| 238 | |
| 239 | Text* node = content->AsText(); |
| 240 | MOZ_ASSERT(node->TextLength() != 0,do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->TextLength() != 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(node->TextLength() != 0)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("node->TextLength() != 0" " (" "frame's GetContentLength() should be 0 if the text node " "has no content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 242); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->TextLength() != 0" ") (" "frame's GetContentLength() should be 0 if the text node " "has no content" ")"); do { *((volatile int*)__null) = 242; __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 241 | "frame's GetContentLength() should be 0 if the text node "do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->TextLength() != 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(node->TextLength() != 0)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("node->TextLength() != 0" " (" "frame's GetContentLength() should be 0 if the text node " "has no content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 242); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->TextLength() != 0" ") (" "frame's GetContentLength() should be 0 if the text node " "has no content" ")"); do { *((volatile int*)__null) = 242; __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 242 | "has no content")do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->TextLength() != 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(node->TextLength() != 0)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("node->TextLength() != 0" " (" "frame's GetContentLength() should be 0 if the text node " "has no content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 242); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->TextLength() != 0" ") (" "frame's GetContentLength() should be 0 if the text node " "has no content" ")"); do { *((volatile int*)__null) = 242; __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false); |
| 243 | |
| 244 | aTextFrame = text; |
| 245 | aTextNode = node; |
| 246 | } |
| 247 | |
| 248 | MOZ_ASSERT(IsNonEmptyTextFrame(aFrame) == isNonEmptyTextFrame,do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsNonEmptyTextFrame(aFrame) == isNonEmptyTextFrame)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(IsNonEmptyTextFrame(aFrame) == isNonEmptyTextFrame)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsNonEmptyTextFrame(aFrame) == isNonEmptyTextFrame" " (" "our logic should agree with IsNonEmptyTextFrame" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 249); AnnotateMozCrashReason("MOZ_ASSERT" "(" "IsNonEmptyTextFrame(aFrame) == isNonEmptyTextFrame" ") (" "our logic should agree with IsNonEmptyTextFrame" ")") ; do { *((volatile int*)__null) = 249; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 249 | "our logic should agree with IsNonEmptyTextFrame")do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsNonEmptyTextFrame(aFrame) == isNonEmptyTextFrame)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(IsNonEmptyTextFrame(aFrame) == isNonEmptyTextFrame)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsNonEmptyTextFrame(aFrame) == isNonEmptyTextFrame" " (" "our logic should agree with IsNonEmptyTextFrame" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 249); AnnotateMozCrashReason("MOZ_ASSERT" "(" "IsNonEmptyTextFrame(aFrame) == isNonEmptyTextFrame" ") (" "our logic should agree with IsNonEmptyTextFrame" ")") ; do { *((volatile int*)__null) = 249; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 250 | return isNonEmptyTextFrame; |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Returns whether the specified atom is for one of the five |
| 255 | * glyph positioning attributes that can appear on SVG text |
| 256 | * elements -- x, y, dx, dy or rotate. |
| 257 | */ |
| 258 | static bool IsGlyphPositioningAttribute(nsAtom* aAttribute) { |
| 259 | return aAttribute == nsGkAtoms::x || aAttribute == nsGkAtoms::y || |
| 260 | aAttribute == nsGkAtoms::dx || aAttribute == nsGkAtoms::dy || |
| 261 | aAttribute == nsGkAtoms::rotate; |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * Returns the position in app units of a given baseline (using an |
| 266 | * SVG dominant-baseline property value) for a given nsTextFrame. |
| 267 | * |
| 268 | * @param aFrame The text frame to inspect. |
| 269 | * @param aTextRun The text run of aFrame. |
| 270 | * @param aDominantBaseline The dominant-baseline value to use. |
| 271 | */ |
| 272 | static nscoord GetBaselinePosition(nsTextFrame* aFrame, gfxTextRun* aTextRun, |
| 273 | StyleDominantBaseline aDominantBaseline, |
| 274 | float aFontSizeScaleFactor) { |
| 275 | WritingMode writingMode = aFrame->GetWritingMode(); |
| 276 | gfxFloat ascent, descent; |
| 277 | aTextRun->GetLineHeightMetrics(ascent, descent); |
| 278 | |
| 279 | auto convertIfVerticalRL = [&](gfxFloat dominantBaseline) { |
| 280 | return writingMode.IsVerticalRL() ? ascent + descent - dominantBaseline |
| 281 | : dominantBaseline; |
| 282 | }; |
| 283 | |
| 284 | switch (aDominantBaseline) { |
| 285 | case StyleDominantBaseline::Hanging: |
| 286 | return convertIfVerticalRL(ascent * 0.2); |
| 287 | case StyleDominantBaseline::TextBeforeEdge: |
| 288 | return convertIfVerticalRL(0); |
| 289 | |
| 290 | case StyleDominantBaseline::Alphabetic: |
| 291 | return writingMode.IsVerticalRL() |
| 292 | ? ascent * 0.5 |
| 293 | : aFrame->GetLogicalBaseline(writingMode); |
| 294 | |
| 295 | case StyleDominantBaseline::Auto: |
| 296 | return convertIfVerticalRL(aFrame->GetLogicalBaseline(writingMode)); |
| 297 | |
| 298 | case StyleDominantBaseline::Middle: |
| 299 | return convertIfVerticalRL(aFrame->GetLogicalBaseline(writingMode) - |
| 300 | SVGContentUtils::GetFontXHeight(aFrame) / 2.0 * |
| 301 | AppUnitsPerCSSPixel() * |
| 302 | aFontSizeScaleFactor); |
| 303 | |
| 304 | case StyleDominantBaseline::TextAfterEdge: |
| 305 | case StyleDominantBaseline::Ideographic: |
| 306 | return writingMode.IsVerticalLR() ? 0 : ascent + descent; |
| 307 | |
| 308 | case StyleDominantBaseline::Central: |
| 309 | return (ascent + descent) / 2.0; |
| 310 | case StyleDominantBaseline::Mathematical: |
| 311 | return convertIfVerticalRL(ascent / 2.0); |
| 312 | } |
| 313 | |
| 314 | MOZ_ASSERT_UNREACHABLE("unexpected dominant-baseline 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 dominant-baseline value" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 314); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "unexpected dominant-baseline value" ")"); do { *((volatile int*)__null) = 314; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 315 | return convertIfVerticalRL(aFrame->GetLogicalBaseline(writingMode)); |
| 316 | } |
| 317 | |
| 318 | /** |
| 319 | * Truncates an array to be at most the length of another array. |
| 320 | * |
| 321 | * @param aArrayToTruncate The array to truncate. |
| 322 | * @param aReferenceArray The array whose length will be used to truncate |
| 323 | * aArrayToTruncate to. |
| 324 | */ |
| 325 | template <typename T, typename U> |
| 326 | static void TruncateTo(nsTArray<T>& aArrayToTruncate, |
| 327 | const nsTArray<U>& aReferenceArray) { |
| 328 | uint32_t length = aReferenceArray.Length(); |
| 329 | if (aArrayToTruncate.Length() > length) { |
| 330 | aArrayToTruncate.TruncateLength(length); |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | /** |
| 335 | * Asserts that the anonymous block child of the SVGTextFrame has been |
| 336 | * reflowed (or does not exist). Returns null if the child has not been |
| 337 | * reflowed, and the frame otherwise. |
| 338 | * |
| 339 | * We check whether the kid has been reflowed and not the frame itself |
| 340 | * since we sometimes need to call this function during reflow, after the |
| 341 | * kid has been reflowed but before we have cleared the dirty bits on the |
| 342 | * frame itself. |
| 343 | */ |
| 344 | static SVGTextFrame* FrameIfAnonymousChildReflowed(SVGTextFrame* aFrame) { |
| 345 | MOZ_ASSERT(aFrame, "aFrame must not be null")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aFrame)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(aFrame))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aFrame" " (" "aFrame must not be null" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 345); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aFrame" ") (" "aFrame must not be null" ")"); do { *((volatile int*)__null ) = 345; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 346 | nsIFrame* kid = aFrame->PrincipalChildList().FirstChild(); |
| 347 | if (kid->IsSubtreeDirty()) { |
| 348 | MOZ_ASSERT(false, "should have already reflowed the anonymous block child")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "should have already reflowed the anonymous block child" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 348); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "should have already reflowed the anonymous block child" ")" ); do { *((volatile int*)__null) = 348; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 349 | return nullptr; |
| 350 | } |
| 351 | return aFrame; |
| 352 | } |
| 353 | |
| 354 | static double GetContextScale(const gfxMatrix& aMatrix) { |
| 355 | // The context scale is the ratio of the length of the transformed |
| 356 | // diagonal vector (1,1) to the length of the untransformed diagonal |
| 357 | // (which is sqrt(2)). |
| 358 | gfxPoint p = aMatrix.TransformPoint(gfxPoint(1, 1)) - |
| 359 | aMatrix.TransformPoint(gfxPoint(0, 0)); |
| 360 | return SVGContentUtils::ComputeNormalizedHypotenuse(p.x, p.y); |
| 361 | } |
| 362 | |
| 363 | // ============================================================================ |
| 364 | // Utility classes |
| 365 | |
| 366 | // ---------------------------------------------------------------------------- |
| 367 | // TextRenderedRun |
| 368 | |
| 369 | /** |
| 370 | * A run of text within a single nsTextFrame whose glyphs can all be painted |
| 371 | * with a single call to nsTextFrame::PaintText. A text rendered run can |
| 372 | * be created for a sequence of two or more consecutive glyphs as long as: |
| 373 | * |
| 374 | * - Only the first glyph has (or none of the glyphs have) been positioned |
| 375 | * with SVG text positioning attributes |
| 376 | * - All of the glyphs have zero rotation |
| 377 | * - The glyphs are not on a text path |
| 378 | * - The glyphs correspond to content within the one nsTextFrame |
| 379 | * |
| 380 | * A TextRenderedRunIterator produces TextRenderedRuns required for painting a |
| 381 | * whole SVGTextFrame. |
| 382 | */ |
| 383 | struct TextRenderedRun { |
| 384 | using Range = gfxTextRun::Range; |
| 385 | |
| 386 | /** |
| 387 | * Constructs a TextRenderedRun that is uninitialized except for mFrame |
| 388 | * being null. |
| 389 | */ |
| 390 | TextRenderedRun() : mFrame(nullptr) {} |
| 391 | |
| 392 | /** |
| 393 | * Constructs a TextRenderedRun with all of the information required to |
| 394 | * paint it. See the comments documenting the member variables below |
| 395 | * for descriptions of the arguments. |
| 396 | */ |
| 397 | TextRenderedRun(nsTextFrame* aFrame, const gfxPoint& aPosition, |
| 398 | float aLengthAdjustScaleFactor, double aRotate, |
| 399 | float aFontSizeScaleFactor, nscoord aBaseline, |
| 400 | uint32_t aTextFrameContentOffset, |
| 401 | uint32_t aTextFrameContentLength, |
| 402 | uint32_t aTextElementCharIndex) |
| 403 | : mFrame(aFrame), |
| 404 | mPosition(aPosition), |
| 405 | mLengthAdjustScaleFactor(aLengthAdjustScaleFactor), |
| 406 | mRotate(static_cast<float>(aRotate)), |
| 407 | mFontSizeScaleFactor(aFontSizeScaleFactor), |
| 408 | mBaseline(aBaseline), |
| 409 | mTextFrameContentOffset(aTextFrameContentOffset), |
| 410 | mTextFrameContentLength(aTextFrameContentLength), |
| 411 | mTextElementCharIndex(aTextElementCharIndex) {} |
| 412 | |
| 413 | /** |
| 414 | * Returns the text run for the text frame that this rendered run is part of. |
| 415 | */ |
| 416 | gfxTextRun* GetTextRun() const { |
| 417 | mFrame->EnsureTextRun(nsTextFrame::eInflated); |
| 418 | return mFrame->GetTextRun(nsTextFrame::eInflated); |
| 419 | } |
| 420 | |
| 421 | /** |
| 422 | * Returns whether this rendered run is RTL. |
| 423 | */ |
| 424 | bool IsRightToLeft() const { return GetTextRun()->IsRightToLeft(); } |
| 425 | |
| 426 | /** |
| 427 | * Returns whether this rendered run is vertical. |
| 428 | */ |
| 429 | bool IsVertical() const { return GetTextRun()->IsVertical(); } |
| 430 | |
| 431 | /** |
| 432 | * Returns the transform that converts from a <text> element's user space into |
| 433 | * the coordinate space that rendered runs can be painted directly in. |
| 434 | * |
| 435 | * The difference between this method and |
| 436 | * GetTransformFromRunUserSpaceToUserSpace is that when calling in to |
| 437 | * nsTextFrame::PaintText, it will already take into account any left clip |
| 438 | * edge (that is, it doesn't just apply a visual clip to the rendered text, it |
| 439 | * shifts the glyphs over so that they are painted with their left edge at the |
| 440 | * x coordinate passed in to it). Thus we need to account for this in our |
| 441 | * transform. |
| 442 | * |
| 443 | * |
| 444 | * Assume that we have: |
| 445 | * |
| 446 | * <text x="100" y="100" rotate="0 0 1 0 0 * 1">abcdef</text>. |
| 447 | * |
| 448 | * This would result in four text rendered runs: |
| 449 | * |
| 450 | * - one for "ab" |
| 451 | * - one for "c" |
| 452 | * - one for "de" |
| 453 | * - one for "f" |
| 454 | * |
| 455 | * Assume now that we are painting the third TextRenderedRun. It will have |
| 456 | * a left clip edge that is the sum of the advances of "abc", and it will |
| 457 | * have a right clip edge that is the advance of "f". In |
| 458 | * SVGTextFrame::PaintSVG(), we pass in nsPoint() (i.e., the origin) |
| 459 | * as the point at which to paint the text frame, and we pass in the |
| 460 | * clip edge values. The nsTextFrame will paint the substring of its |
| 461 | * text such that the top-left corner of the "d"'s glyph cell will be at |
| 462 | * (0, 0) in the current coordinate system. |
| 463 | * |
| 464 | * Thus, GetTransformFromUserSpaceForPainting must return a transform from |
| 465 | * whatever user space the <text> element is in to a coordinate space in |
| 466 | * device pixels (as that's what nsTextFrame works in) where the origin is at |
| 467 | * the same position as our user space mPositions[i].mPosition value for |
| 468 | * the "d" glyph, which will be (100 + userSpaceAdvance("abc"), 100). |
| 469 | * The translation required to do this (ignoring the scale to get from |
| 470 | * user space to device pixels, and ignoring the |
| 471 | * (100 + userSpaceAdvance("abc"), 100) translation) is: |
| 472 | * |
| 473 | * (-leftEdge, -baseline) |
| 474 | * |
| 475 | * where baseline is the distance between the baseline of the text and the top |
| 476 | * edge of the nsTextFrame. We translate by -leftEdge horizontally because |
| 477 | * the nsTextFrame will already shift the glyphs over by that amount and start |
| 478 | * painting glyphs at x = 0. We translate by -baseline vertically so that |
| 479 | * painting the top edges of the glyphs at y = 0 will result in their |
| 480 | * baselines being at our desired y position. |
| 481 | * |
| 482 | * |
| 483 | * Now for an example with RTL text. Assume our content is now |
| 484 | * <text x="100" y="100" rotate="0 0 1 0 0 1">WERBEH</text>. We'd have |
| 485 | * the following text rendered runs: |
| 486 | * |
| 487 | * - one for "EH" |
| 488 | * - one for "B" |
| 489 | * - one for "ER" |
| 490 | * - one for "W" |
| 491 | * |
| 492 | * Again, we are painting the third TextRenderedRun. The left clip edge |
| 493 | * is the advance of the "W" and the right clip edge is the sum of the |
| 494 | * advances of "BEH". Our translation to get the rendered "ER" glyphs |
| 495 | * in the right place this time is: |
| 496 | * |
| 497 | * (-frameWidth + rightEdge, -baseline) |
| 498 | * |
| 499 | * which is equivalent to: |
| 500 | * |
| 501 | * (-(leftEdge + advance("ER")), -baseline) |
| 502 | * |
| 503 | * The reason we have to shift left additionally by the width of the run |
| 504 | * of glyphs we are painting is that although the nsTextFrame is RTL, |
| 505 | * we still supply the top-left corner to paint the frame at when calling |
| 506 | * nsTextFrame::PaintText, even though our user space positions for each |
| 507 | * glyph in mPositions specifies the origin of each glyph, which for RTL |
| 508 | * glyphs is at the right edge of the glyph cell. |
| 509 | * |
| 510 | * |
| 511 | * For any other use of an nsTextFrame in the context of a particular run |
| 512 | * (such as hit testing, or getting its rectangle), |
| 513 | * GetTransformFromRunUserSpaceToUserSpace should be used. |
| 514 | * |
| 515 | * @param aContext The context to use for unit conversions. |
| 516 | */ |
| 517 | gfxMatrix GetTransformFromUserSpaceForPainting( |
| 518 | nsPresContext* aContext, const nscoord aVisIStartEdge, |
| 519 | const nscoord aVisIEndEdge) const; |
| 520 | |
| 521 | /** |
| 522 | * Returns the transform that converts from "run user space" to a <text> |
| 523 | * element's user space. Run user space is a coordinate system that has the |
| 524 | * same size as the <text>'s user space but rotated and translated such that |
| 525 | * (0,0) is the top-left of the rectangle that bounds the text. |
| 526 | * |
| 527 | * @param aContext The context to use for unit conversions. |
| 528 | */ |
| 529 | gfxMatrix GetTransformFromRunUserSpaceToUserSpace( |
| 530 | nsPresContext* aContext) const; |
| 531 | |
| 532 | /** |
| 533 | * Returns the transform that converts from "run user space" to float pixels |
| 534 | * relative to the nsTextFrame that this rendered run is a part of. |
| 535 | * |
| 536 | * @param aContext The context to use for unit conversions. |
| 537 | */ |
| 538 | gfxMatrix GetTransformFromRunUserSpaceToFrameUserSpace( |
| 539 | nsPresContext* aContext) const; |
| 540 | |
| 541 | /** |
| 542 | * Flag values used for the aFlags arguments of GetRunUserSpaceRect, |
| 543 | * GetFrameUserSpaceRect and GetUserSpaceRect. |
| 544 | */ |
| 545 | enum { |
| 546 | // Includes the fill geometry of the text in the returned rectangle. |
| 547 | eIncludeFill = 1, |
| 548 | // Includes the stroke geometry of the text in the returned rectangle. |
| 549 | eIncludeStroke = 2, |
| 550 | // Don't include any horizontal glyph overflow in the returned rectangle. |
| 551 | eNoHorizontalOverflow = 4 |
| 552 | }; |
| 553 | |
| 554 | /** |
| 555 | * Returns a rectangle that bounds the fill and/or stroke of the rendered run |
| 556 | * in run user space. |
| 557 | * |
| 558 | * @param aContext The context to use for unit conversions. |
| 559 | * @param aFlags A combination of the flags above (eIncludeFill and |
| 560 | * eIncludeStroke) indicating what parts of the text to include in |
| 561 | * the rectangle. |
| 562 | */ |
| 563 | SVGBBox GetRunUserSpaceRect(nsPresContext* aContext, uint32_t aFlags) const; |
| 564 | |
| 565 | /** |
| 566 | * Returns a rectangle that covers the fill and/or stroke of the rendered run |
| 567 | * in "frame user space". |
| 568 | * |
| 569 | * Frame user space is a coordinate space of the same scale as the <text> |
| 570 | * element's user space, but with its rotation set to the rotation of |
| 571 | * the glyphs within this rendered run and its origin set to the position |
| 572 | * such that placing the nsTextFrame there would result in the glyphs in |
| 573 | * this rendered run being at their correct positions. |
| 574 | * |
| 575 | * For example, say we have <text x="100 150" y="100">ab</text>. Assume |
| 576 | * the advance of both the "a" and the "b" is 12 user units, and the |
| 577 | * ascent of the text is 8 user units and its descent is 6 user units, |
| 578 | * and that we are not measuing the stroke of the text, so that we stay |
| 579 | * entirely within the glyph cells. |
| 580 | * |
| 581 | * There will be two text rendered runs, one for "a" and one for "b". |
| 582 | * |
| 583 | * The frame user space for the "a" run will have its origin at |
| 584 | * (100, 100 - 8) in the <text> element's user space and will have its |
| 585 | * axes aligned with the user space (since there is no rotate="" or |
| 586 | * text path involve) and with its scale the same as the user space. |
| 587 | * The rect returned by this method will be (0, 0, 12, 14), since the "a" |
| 588 | * glyph is right at the left of the nsTextFrame. |
| 589 | * |
| 590 | * The frame user space for the "b" run will have its origin at |
| 591 | * (150 - 12, 100 - 8), and scale/rotation the same as above. The rect |
| 592 | * returned by this method will be (12, 0, 12, 14), since we are |
| 593 | * advance("a") horizontally in to the text frame. |
| 594 | * |
| 595 | * @param aContext The context to use for unit conversions. |
| 596 | * @param aFlags A combination of the flags above (eIncludeFill and |
| 597 | * eIncludeStroke) indicating what parts of the text to include in |
| 598 | * the rectangle. |
| 599 | */ |
| 600 | SVGBBox GetFrameUserSpaceRect(nsPresContext* aContext, uint32_t aFlags) const; |
| 601 | |
| 602 | /** |
| 603 | * Returns a rectangle that covers the fill and/or stroke of the rendered run |
| 604 | * in the <text> element's user space. |
| 605 | * |
| 606 | * @param aContext The context to use for unit conversions. |
| 607 | * @param aFlags A combination of the flags above indicating what parts of |
| 608 | * the text to include in the rectangle. |
| 609 | * @param aAdditionalTransform An additional transform to apply to the |
| 610 | * frame user space rectangle before its bounds are transformed into |
| 611 | * user space. |
| 612 | */ |
| 613 | SVGBBox GetUserSpaceRect( |
| 614 | nsPresContext* aContext, uint32_t aFlags, |
| 615 | const gfxMatrix* aAdditionalTransform = nullptr) const; |
| 616 | |
| 617 | /** |
| 618 | * Gets the app unit amounts to clip from the left and right edges of |
| 619 | * the nsTextFrame in order to paint just this rendered run. |
| 620 | * |
| 621 | * Note that if clip edge amounts land in the middle of a glyph, the |
| 622 | * glyph won't be painted at all. The clip edges are thus more of |
| 623 | * a selection mechanism for which glyphs will be painted, rather |
| 624 | * than a geometric clip. |
| 625 | */ |
| 626 | void GetClipEdges(nscoord& aVisIStartEdge, nscoord& aVisIEndEdge) const; |
| 627 | |
| 628 | /** |
| 629 | * Returns the advance width of the whole rendered run. |
| 630 | */ |
| 631 | nscoord GetAdvanceWidth() const; |
| 632 | |
| 633 | /** |
| 634 | * Returns the index of the character into this rendered run whose |
| 635 | * glyph cell contains the given point, or -1 if there is no such |
| 636 | * character. This does not hit test against any overflow. |
| 637 | * |
| 638 | * @param aContext The context to use for unit conversions. |
| 639 | * @param aPoint The point in the user space of the <text> element. |
| 640 | */ |
| 641 | int32_t GetCharNumAtPosition(nsPresContext* aContext, |
| 642 | const gfxPoint& aPoint) const; |
| 643 | |
| 644 | /** |
| 645 | * The text frame that this rendered run lies within. |
| 646 | */ |
| 647 | nsTextFrame* mFrame; |
| 648 | |
| 649 | /** |
| 650 | * The point in user space that the text is positioned at. |
| 651 | * |
| 652 | * For a horizontal run: |
| 653 | * The x coordinate is the left edge of a LTR run of text or the right edge of |
| 654 | * an RTL run. The y coordinate is the baseline of the text. |
| 655 | * For a vertical run: |
| 656 | * The x coordinate is the baseline of the text. |
| 657 | * The y coordinate is the top edge of a LTR run, or bottom of RTL. |
| 658 | */ |
| 659 | gfxPoint mPosition; |
| 660 | |
| 661 | /** |
| 662 | * The horizontal scale factor to apply when painting glyphs to take |
| 663 | * into account textLength="". |
| 664 | */ |
| 665 | float mLengthAdjustScaleFactor; |
| 666 | |
| 667 | /** |
| 668 | * The rotation in radians in the user coordinate system that the text has. |
| 669 | */ |
| 670 | float mRotate; |
| 671 | |
| 672 | /** |
| 673 | * The scale factor that was used to transform the text run's original font |
| 674 | * size into a sane range for painting and measurement. |
| 675 | */ |
| 676 | double mFontSizeScaleFactor; |
| 677 | |
| 678 | /** |
| 679 | * The baseline in app units of this text run. The measurement is from the |
| 680 | * top of the text frame. (From the left edge if vertical.) |
| 681 | */ |
| 682 | nscoord mBaseline; |
| 683 | |
| 684 | /** |
| 685 | * The offset and length in mFrame's content Text that corresponds to |
| 686 | * this text rendered run. These are original char indexes. |
| 687 | */ |
| 688 | uint32_t mTextFrameContentOffset; |
| 689 | uint32_t mTextFrameContentLength; |
| 690 | |
| 691 | /** |
| 692 | * The character index in the whole SVG <text> element that this text rendered |
| 693 | * run begins at. |
| 694 | */ |
| 695 | uint32_t mTextElementCharIndex; |
| 696 | }; |
| 697 | |
| 698 | gfxMatrix TextRenderedRun::GetTransformFromUserSpaceForPainting( |
| 699 | nsPresContext* aContext, const nscoord aVisIStartEdge, |
| 700 | const nscoord aVisIEndEdge) const { |
| 701 | // We transform to device pixels positioned such that painting the text frame |
| 702 | // at (0,0) with aItem will result in the text being in the right place. |
| 703 | |
| 704 | gfxMatrix m; |
| 705 | if (!mFrame) { |
| 706 | return m; |
| 707 | } |
| 708 | |
| 709 | float cssPxPerDevPx = |
| 710 | nsPresContext::AppUnitsToFloatCSSPixels(aContext->AppUnitsPerDevPixel()); |
| 711 | |
| 712 | // Glyph position in user space. |
| 713 | m.PreTranslate(mPosition / cssPxPerDevPx); |
| 714 | |
| 715 | // Take into account any font size scaling and scaling due to textLength="". |
| 716 | m.PreScale(1.0 / mFontSizeScaleFactor, 1.0 / mFontSizeScaleFactor); |
| 717 | |
| 718 | // Rotation due to rotate="" or a <textPath>. |
| 719 | m.PreRotate(mRotate); |
| 720 | |
| 721 | // Scale for textLength="" and translate to get the text frame |
| 722 | // to the right place. |
| 723 | nsPoint t; |
| 724 | if (IsVertical()) { |
| 725 | m.PreScale(1.0, mLengthAdjustScaleFactor); |
| 726 | t = nsPoint(-mBaseline, IsRightToLeft() |
| 727 | ? -mFrame->GetRect().height + aVisIEndEdge |
| 728 | : -aVisIStartEdge); |
| 729 | } else { |
| 730 | m.PreScale(mLengthAdjustScaleFactor, 1.0); |
| 731 | t = nsPoint(IsRightToLeft() ? -mFrame->GetRect().width + aVisIEndEdge |
| 732 | : -aVisIStartEdge, |
| 733 | -mBaseline); |
| 734 | } |
| 735 | m.PreTranslate(AppUnitsToGfxUnits(t, aContext)); |
| 736 | |
| 737 | return m; |
| 738 | } |
| 739 | |
| 740 | gfxMatrix TextRenderedRun::GetTransformFromRunUserSpaceToUserSpace( |
| 741 | nsPresContext* aContext) const { |
| 742 | gfxMatrix m; |
| 743 | if (!mFrame) { |
| 744 | return m; |
| 745 | } |
| 746 | |
| 747 | float cssPxPerDevPx = |
| 748 | nsPresContext::AppUnitsToFloatCSSPixels(aContext->AppUnitsPerDevPixel()); |
| 749 | |
| 750 | nscoord start, end; |
| 751 | GetClipEdges(start, end); |
| 752 | |
| 753 | // Glyph position in user space. |
| 754 | m.PreTranslate(mPosition); |
| 755 | |
| 756 | // Rotation due to rotate="" or a <textPath>. |
| 757 | m.PreRotate(mRotate); |
| 758 | |
| 759 | // Scale for textLength="" and translate to get the text frame |
| 760 | // to the right place. |
| 761 | |
| 762 | nsPoint t; |
| 763 | if (IsVertical()) { |
| 764 | m.PreScale(1.0, mLengthAdjustScaleFactor); |
| 765 | t = nsPoint(-mBaseline, |
| 766 | IsRightToLeft() ? -mFrame->GetRect().height + start + end : 0); |
| 767 | } else { |
| 768 | m.PreScale(mLengthAdjustScaleFactor, 1.0); |
| 769 | t = nsPoint(IsRightToLeft() ? -mFrame->GetRect().width + start + end : 0, |
| 770 | -mBaseline); |
| 771 | } |
| 772 | m.PreTranslate(AppUnitsToGfxUnits(t, aContext) * cssPxPerDevPx / |
| 773 | mFontSizeScaleFactor); |
| 774 | |
| 775 | return m; |
| 776 | } |
| 777 | |
| 778 | gfxMatrix TextRenderedRun::GetTransformFromRunUserSpaceToFrameUserSpace( |
| 779 | nsPresContext* aContext) const { |
| 780 | gfxMatrix m; |
| 781 | if (!mFrame) { |
| 782 | return m; |
| 783 | } |
| 784 | |
| 785 | nscoord start, end; |
| 786 | GetClipEdges(start, end); |
| 787 | |
| 788 | // Translate by the horizontal distance into the text frame this |
| 789 | // rendered run is. |
| 790 | gfxFloat appPerCssPx = AppUnitsPerCSSPixel(); |
| 791 | gfxPoint t = IsVertical() ? gfxPoint(0, start / appPerCssPx) |
| 792 | : gfxPoint(start / appPerCssPx, 0); |
| 793 | return m.PreTranslate(t); |
| 794 | } |
| 795 | |
| 796 | SVGBBox TextRenderedRun::GetRunUserSpaceRect(nsPresContext* aContext, |
| 797 | uint32_t aFlags) const { |
| 798 | SVGBBox r; |
| 799 | if (!mFrame) { |
| 800 | return r; |
| 801 | } |
| 802 | |
| 803 | // Determine the amount of overflow around frame's mRect. |
| 804 | // |
| 805 | // We need to call InkOverflowRectRelativeToSelf because this includes |
| 806 | // overflowing decorations, which the MeasureText call below does not. |
| 807 | nsRect self = mFrame->InkOverflowRectRelativeToSelf(); |
| 808 | nsRect rect = mFrame->GetRect(); |
| 809 | bool vertical = IsVertical(); |
| 810 | nsMargin inkOverflow( |
| 811 | vertical ? -self.x : -self.y, |
| 812 | vertical ? self.YMost() - rect.height : self.XMost() - rect.width, |
| 813 | vertical ? self.XMost() - rect.width : self.YMost() - rect.height, |
| 814 | vertical ? -self.y : -self.x); |
| 815 | |
| 816 | gfxSkipCharsIterator it = mFrame->EnsureTextRun(nsTextFrame::eInflated); |
| 817 | gfxSkipCharsIterator start = it; |
| 818 | gfxTextRun* textRun = mFrame->GetTextRun(nsTextFrame::eInflated); |
| 819 | |
| 820 | // Get the content range for this rendered run. |
| 821 | Range range = ConvertOriginalToSkipped(it, mTextFrameContentOffset, |
| 822 | mTextFrameContentLength); |
| 823 | if (range.Length() == 0) { |
| 824 | return r; |
| 825 | } |
| 826 | |
| 827 | // FIXME(heycam): We could create a single PropertyProvider for all |
| 828 | // TextRenderedRuns that correspond to the text frame, rather than recreate |
| 829 | // it each time here. |
| 830 | nsTextFrame::PropertyProvider provider(mFrame, start); |
| 831 | |
| 832 | // Measure that range. |
| 833 | gfxTextRun::Metrics metrics = textRun->MeasureText( |
| 834 | range, gfxFont::LOOSE_INK_EXTENTS, nullptr, &provider); |
| 835 | // Make sure it includes the font-box. |
| 836 | gfxRect fontBox(0, -metrics.mAscent, metrics.mAdvanceWidth, |
| 837 | metrics.mAscent + metrics.mDescent); |
| 838 | metrics.mBoundingBox.UnionRect(metrics.mBoundingBox, fontBox); |
| 839 | |
| 840 | // Determine the rectangle that covers the rendered run's fill, |
| 841 | // taking into account the measured overflow due to decorations. |
| 842 | nscoord baseline = |
| 843 | NSToCoordRoundWithClamp(metrics.mBoundingBox.y + metrics.mAscent); |
| 844 | gfxFloat x, width; |
| 845 | if (aFlags & eNoHorizontalOverflow) { |
| 846 | x = 0.0; |
| 847 | width = textRun->GetAdvanceWidth(range, &provider); |
| 848 | if (width < 0.0) { |
| 849 | x = width; |
| 850 | width = -width; |
| 851 | } |
| 852 | } else { |
| 853 | x = metrics.mBoundingBox.x; |
| 854 | width = metrics.mBoundingBox.width; |
| 855 | } |
| 856 | nsRect fillInAppUnits(NSToCoordRoundWithClamp(x), baseline, |
| 857 | NSToCoordRoundWithClamp(width), |
| 858 | NSToCoordRoundWithClamp(metrics.mBoundingBox.height)); |
| 859 | fillInAppUnits.Inflate(inkOverflow); |
| 860 | if (textRun->IsVertical()) { |
| 861 | // Swap line-relative textMetrics dimensions to physical coordinates. |
| 862 | std::swap(fillInAppUnits.x, fillInAppUnits.y); |
| 863 | std::swap(fillInAppUnits.width, fillInAppUnits.height); |
| 864 | } |
| 865 | |
| 866 | // Convert the app units rectangle to user units. |
| 867 | gfxRect fill = AppUnitsToFloatCSSPixels( |
| 868 | gfxRect(fillInAppUnits.x, fillInAppUnits.y, fillInAppUnits.width, |
| 869 | fillInAppUnits.height), |
| 870 | aContext); |
| 871 | |
| 872 | // Scale the rectangle up due to any mFontSizeScaleFactor. |
| 873 | fill.Scale(1.0 / mFontSizeScaleFactor); |
| 874 | |
| 875 | // Include the fill if requested. |
| 876 | if (aFlags & eIncludeFill) { |
| 877 | r = fill; |
| 878 | } |
| 879 | |
| 880 | // Include the stroke if requested. |
| 881 | if ((aFlags & eIncludeStroke) && !fill.IsEmpty() && |
| 882 | SVGUtils::GetStrokeWidth(mFrame) > 0) { |
| 883 | r.UnionEdges( |
| 884 | SVGUtils::PathExtentsToMaxStrokeExtents(fill, mFrame, gfxMatrix())); |
| 885 | } |
| 886 | |
| 887 | return r; |
| 888 | } |
| 889 | |
| 890 | SVGBBox TextRenderedRun::GetFrameUserSpaceRect(nsPresContext* aContext, |
| 891 | uint32_t aFlags) const { |
| 892 | SVGBBox r = GetRunUserSpaceRect(aContext, aFlags); |
| 893 | if (r.IsEmpty()) { |
| 894 | return r; |
| 895 | } |
| 896 | gfxMatrix m = GetTransformFromRunUserSpaceToFrameUserSpace(aContext); |
| 897 | return m.TransformBounds(r.ToThebesRect()); |
| 898 | } |
| 899 | |
| 900 | SVGBBox TextRenderedRun::GetUserSpaceRect( |
| 901 | nsPresContext* aContext, uint32_t aFlags, |
| 902 | const gfxMatrix* aAdditionalTransform) const { |
| 903 | SVGBBox r = GetRunUserSpaceRect(aContext, aFlags); |
| 904 | if (r.IsEmpty()) { |
| 905 | return r; |
| 906 | } |
| 907 | gfxMatrix m = GetTransformFromRunUserSpaceToUserSpace(aContext); |
| 908 | if (aAdditionalTransform) { |
| 909 | m *= *aAdditionalTransform; |
| 910 | } |
| 911 | return m.TransformBounds(r.ToThebesRect()); |
| 912 | } |
| 913 | |
| 914 | void TextRenderedRun::GetClipEdges(nscoord& aVisIStartEdge, |
| 915 | nscoord& aVisIEndEdge) const { |
| 916 | uint32_t contentLength = mFrame->GetContentLength(); |
| 917 | if (mTextFrameContentOffset == 0 && |
| 918 | mTextFrameContentLength == contentLength) { |
| 919 | // If the rendered run covers the entire content, we know we don't need |
| 920 | // to clip without having to measure anything. |
| 921 | aVisIStartEdge = 0; |
| 922 | aVisIEndEdge = 0; |
| 923 | return; |
| 924 | } |
| 925 | |
| 926 | gfxSkipCharsIterator it = mFrame->EnsureTextRun(nsTextFrame::eInflated); |
| 927 | gfxTextRun* textRun = mFrame->GetTextRun(nsTextFrame::eInflated); |
| 928 | nsTextFrame::PropertyProvider provider(mFrame, it); |
| 929 | |
| 930 | // Get the covered content offset/length for this rendered run in skipped |
| 931 | // characters, since that is what GetAdvanceWidth expects. |
| 932 | Range runRange = ConvertOriginalToSkipped(it, mTextFrameContentOffset, |
| 933 | mTextFrameContentLength); |
| 934 | |
| 935 | // Get the offset/length of the whole nsTextFrame. |
| 936 | uint32_t frameOffset = mFrame->GetContentOffset(); |
| 937 | uint32_t frameLength = mFrame->GetContentLength(); |
| 938 | |
| 939 | // Trim the whole-nsTextFrame offset/length to remove any leading/trailing |
| 940 | // white space, as the nsTextFrame when painting does not include them when |
| 941 | // interpreting clip edges. |
| 942 | nsTextFrame::TrimmedOffsets trimmedOffsets = |
| 943 | mFrame->GetTrimmedOffsets(mFrame->TextFragment()); |
| 944 | TrimOffsets(frameOffset, frameLength, trimmedOffsets); |
| 945 | |
| 946 | // Convert the trimmed whole-nsTextFrame offset/length into skipped |
| 947 | // characters. |
| 948 | Range frameRange = ConvertOriginalToSkipped(it, frameOffset, frameLength); |
| 949 | |
| 950 | // Measure the advance width in the text run between the start of |
| 951 | // frame's content and the start of the rendered run's content, |
| 952 | nscoord startEdge = textRun->GetAdvanceWidth( |
| 953 | Range(frameRange.start, runRange.start), &provider); |
| 954 | |
| 955 | // and between the end of the rendered run's content and the end |
| 956 | // of the frame's content. |
| 957 | nscoord endEdge = |
| 958 | textRun->GetAdvanceWidth(Range(runRange.end, frameRange.end), &provider); |
| 959 | |
| 960 | if (textRun->IsRightToLeft()) { |
| 961 | aVisIStartEdge = endEdge; |
| 962 | aVisIEndEdge = startEdge; |
| 963 | } else { |
| 964 | aVisIStartEdge = startEdge; |
| 965 | aVisIEndEdge = endEdge; |
| 966 | } |
| 967 | } |
| 968 | |
| 969 | nscoord TextRenderedRun::GetAdvanceWidth() const { |
| 970 | gfxSkipCharsIterator it = mFrame->EnsureTextRun(nsTextFrame::eInflated); |
| 971 | gfxTextRun* textRun = mFrame->GetTextRun(nsTextFrame::eInflated); |
| 972 | nsTextFrame::PropertyProvider provider(mFrame, it); |
| 973 | |
| 974 | Range range = ConvertOriginalToSkipped(it, mTextFrameContentOffset, |
| 975 | mTextFrameContentLength); |
| 976 | |
| 977 | return textRun->GetAdvanceWidth(range, &provider); |
| 978 | } |
| 979 | |
| 980 | int32_t TextRenderedRun::GetCharNumAtPosition(nsPresContext* aContext, |
| 981 | const gfxPoint& aPoint) const { |
| 982 | if (mTextFrameContentLength == 0) { |
| 983 | return -1; |
| 984 | } |
| 985 | |
| 986 | float cssPxPerDevPx = |
| 987 | nsPresContext::AppUnitsToFloatCSSPixels(aContext->AppUnitsPerDevPixel()); |
| 988 | |
| 989 | // Convert the point from user space into run user space, and take |
| 990 | // into account any mFontSizeScaleFactor. |
| 991 | gfxMatrix m = GetTransformFromRunUserSpaceToUserSpace(aContext); |
| 992 | if (!m.Invert()) { |
| 993 | return -1; |
| 994 | } |
| 995 | gfxPoint p = m.TransformPoint(aPoint) / cssPxPerDevPx * mFontSizeScaleFactor; |
| 996 | |
| 997 | // First check that the point lies vertically between the top and bottom |
| 998 | // edges of the text. |
| 999 | gfxFloat ascent, descent; |
| 1000 | GetAscentAndDescentInAppUnits(mFrame, ascent, descent); |
| 1001 | |
| 1002 | WritingMode writingMode = mFrame->GetWritingMode(); |
| 1003 | if (writingMode.IsVertical()) { |
| 1004 | gfxFloat leftEdge = mFrame->GetLogicalBaseline(writingMode) - |
| 1005 | (writingMode.IsVerticalRL() ? ascent : descent); |
| 1006 | gfxFloat rightEdge = leftEdge + ascent + descent; |
| 1007 | if (p.x < aContext->AppUnitsToGfxUnits(leftEdge) || |
| 1008 | p.x > aContext->AppUnitsToGfxUnits(rightEdge)) { |
| 1009 | return -1; |
| 1010 | } |
| 1011 | } else { |
| 1012 | gfxFloat topEdge = mFrame->GetLogicalBaseline(writingMode) - ascent; |
| 1013 | gfxFloat bottomEdge = topEdge + ascent + descent; |
| 1014 | if (p.y < aContext->AppUnitsToGfxUnits(topEdge) || |
| 1015 | p.y > aContext->AppUnitsToGfxUnits(bottomEdge)) { |
| 1016 | return -1; |
| 1017 | } |
| 1018 | } |
| 1019 | |
| 1020 | gfxSkipCharsIterator it = mFrame->EnsureTextRun(nsTextFrame::eInflated); |
| 1021 | gfxTextRun* textRun = mFrame->GetTextRun(nsTextFrame::eInflated); |
| 1022 | nsTextFrame::PropertyProvider provider(mFrame, it); |
| 1023 | |
| 1024 | // Next check that the point lies horizontally within the left and right |
| 1025 | // edges of the text. |
| 1026 | Range range = ConvertOriginalToSkipped(it, mTextFrameContentOffset, |
| 1027 | mTextFrameContentLength); |
| 1028 | gfxFloat runAdvance = |
| 1029 | aContext->AppUnitsToGfxUnits(textRun->GetAdvanceWidth(range, &provider)); |
| 1030 | |
| 1031 | gfxFloat pos = writingMode.IsVertical() ? p.y : p.x; |
| 1032 | if (pos < 0 || pos >= runAdvance) { |
| 1033 | return -1; |
| 1034 | } |
| 1035 | |
| 1036 | // Finally, measure progressively smaller portions of the rendered run to |
| 1037 | // find which glyph it lies within. This will need to change once we |
| 1038 | // support letter-spacing and word-spacing. |
| 1039 | bool rtl = textRun->IsRightToLeft(); |
| 1040 | for (int32_t i = mTextFrameContentLength - 1; i >= 0; i--) { |
| 1041 | range = ConvertOriginalToSkipped(it, mTextFrameContentOffset, i); |
| 1042 | gfxFloat advance = aContext->AppUnitsToGfxUnits( |
| 1043 | textRun->GetAdvanceWidth(range, &provider)); |
| 1044 | if ((rtl && pos < runAdvance - advance) || (!rtl && pos >= advance)) { |
| 1045 | return i; |
| 1046 | } |
| 1047 | } |
| 1048 | return -1; |
| 1049 | } |
| 1050 | |
| 1051 | // ---------------------------------------------------------------------------- |
| 1052 | // TextNodeIterator |
| 1053 | |
| 1054 | enum SubtreePosition { eBeforeSubtree, eWithinSubtree, eAfterSubtree }; |
| 1055 | |
| 1056 | /** |
| 1057 | * An iterator class for Text that are descendants of a given node, the |
| 1058 | * root. Nodes are iterated in document order. An optional subtree can be |
| 1059 | * specified, in which case the iterator will track whether the current state of |
| 1060 | * the traversal over the tree is within that subtree or is past that subtree. |
| 1061 | */ |
| 1062 | class TextNodeIterator { |
| 1063 | public: |
| 1064 | /** |
| 1065 | * Constructs a TextNodeIterator with the specified root node and optional |
| 1066 | * subtree. |
| 1067 | */ |
| 1068 | explicit TextNodeIterator(nsIContent* aRoot, nsIContent* aSubtree = nullptr) |
| 1069 | : mRoot(aRoot), |
| 1070 | mSubtree(aSubtree == aRoot ? nullptr : aSubtree), |
| 1071 | mCurrent(aRoot), |
| 1072 | mSubtreePosition(mSubtree ? eBeforeSubtree : eWithinSubtree) { |
| 1073 | NS_ASSERTION(aRoot, "expected non-null root")do { if (!(aRoot)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "expected non-null root" , "aRoot", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1073); MOZ_PretendNoReturn(); } } while (0); |
| 1074 | if (!aRoot->IsText()) { |
| 1075 | Next(); |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | /** |
| 1080 | * Returns the current Text, or null if the iterator has finished. |
| 1081 | */ |
| 1082 | Text* Current() const { return mCurrent ? mCurrent->AsText() : nullptr; } |
| 1083 | |
| 1084 | /** |
| 1085 | * Advances to the next Text and returns it, or null if the end of |
| 1086 | * iteration has been reached. |
| 1087 | */ |
| 1088 | Text* Next(); |
| 1089 | |
| 1090 | /** |
| 1091 | * Returns whether the iterator is currently within the subtree rooted |
| 1092 | * at mSubtree. Returns true if we are not tracking a subtree (we consider |
| 1093 | * that we're always within the subtree). |
| 1094 | */ |
| 1095 | bool IsWithinSubtree() const { return mSubtreePosition == eWithinSubtree; } |
| 1096 | |
| 1097 | /** |
| 1098 | * Returns whether the iterator is past the subtree rooted at mSubtree. |
| 1099 | * Returns false if we are not tracking a subtree. |
| 1100 | */ |
| 1101 | bool IsAfterSubtree() const { return mSubtreePosition == eAfterSubtree; } |
| 1102 | |
| 1103 | private: |
| 1104 | /** |
| 1105 | * The root under which all Text will be iterated over. |
| 1106 | */ |
| 1107 | nsIContent* const mRoot; |
| 1108 | |
| 1109 | /** |
| 1110 | * The node rooting the subtree to track. |
| 1111 | */ |
| 1112 | nsIContent* const mSubtree; |
| 1113 | |
| 1114 | /** |
| 1115 | * The current node during iteration. |
| 1116 | */ |
| 1117 | nsIContent* mCurrent; |
| 1118 | |
| 1119 | /** |
| 1120 | * The current iterator position relative to mSubtree. |
| 1121 | */ |
| 1122 | SubtreePosition mSubtreePosition; |
| 1123 | }; |
| 1124 | |
| 1125 | Text* TextNodeIterator::Next() { |
| 1126 | // Starting from mCurrent, we do a non-recursive traversal to the next |
| 1127 | // Text beneath mRoot, updating mSubtreePosition appropriately if we |
| 1128 | // encounter mSubtree. |
| 1129 | if (mCurrent) { |
| 1130 | do { |
| 1131 | nsIContent* next = |
| 1132 | IsTextContentElement(mCurrent) ? mCurrent->GetFirstChild() : nullptr; |
| 1133 | if (next) { |
| 1134 | mCurrent = next; |
| 1135 | if (mCurrent == mSubtree) { |
| 1136 | mSubtreePosition = eWithinSubtree; |
| 1137 | } |
| 1138 | } else { |
| 1139 | for (;;) { |
| 1140 | if (mCurrent == mRoot) { |
| 1141 | mCurrent = nullptr; |
| 1142 | break; |
| 1143 | } |
| 1144 | if (mCurrent == mSubtree) { |
| 1145 | mSubtreePosition = eAfterSubtree; |
| 1146 | } |
| 1147 | next = mCurrent->GetNextSibling(); |
| 1148 | if (next) { |
| 1149 | mCurrent = next; |
| 1150 | if (mCurrent == mSubtree) { |
| 1151 | mSubtreePosition = eWithinSubtree; |
| 1152 | } |
| 1153 | break; |
| 1154 | } |
| 1155 | if (mCurrent == mSubtree) { |
| 1156 | mSubtreePosition = eAfterSubtree; |
| 1157 | } |
| 1158 | mCurrent = mCurrent->GetParent(); |
| 1159 | } |
| 1160 | } |
| 1161 | } while (mCurrent && !mCurrent->IsText()); |
| 1162 | } |
| 1163 | |
| 1164 | return mCurrent ? mCurrent->AsText() : nullptr; |
| 1165 | } |
| 1166 | |
| 1167 | // ---------------------------------------------------------------------------- |
| 1168 | // TextNodeCorrespondenceRecorder |
| 1169 | |
| 1170 | /** |
| 1171 | * TextNodeCorrespondence is used as the value of a frame property that |
| 1172 | * is stored on all its descendant nsTextFrames. It stores the number of DOM |
| 1173 | * characters between it and the previous nsTextFrame that did not have an |
| 1174 | * nsTextFrame created for them, due to either not being in a correctly |
| 1175 | * parented text content element, or because they were display:none. |
| 1176 | * These are called "undisplayed characters". |
| 1177 | * |
| 1178 | * See also TextNodeCorrespondenceRecorder below, which is what sets the |
| 1179 | * frame property. |
| 1180 | */ |
| 1181 | struct TextNodeCorrespondence { |
| 1182 | explicit TextNodeCorrespondence(uint32_t aUndisplayedCharacters) |
| 1183 | : mUndisplayedCharacters(aUndisplayedCharacters) {} |
| 1184 | |
| 1185 | uint32_t mUndisplayedCharacters; |
| 1186 | }; |
| 1187 | |
| 1188 | NS_DECLARE_FRAME_PROPERTY_DELETABLE(TextNodeCorrespondenceProperty,static const mozilla::FramePropertyDescriptor<TextNodeCorrespondence >* TextNodeCorrespondenceProperty() { static const auto descriptor = mozilla::FramePropertyDescriptor<TextNodeCorrespondence >::NewWithDestructor<DeleteValue>(); return &descriptor ; } |
| 1189 | TextNodeCorrespondence)static const mozilla::FramePropertyDescriptor<TextNodeCorrespondence >* TextNodeCorrespondenceProperty() { static const auto descriptor = mozilla::FramePropertyDescriptor<TextNodeCorrespondence >::NewWithDestructor<DeleteValue>(); return &descriptor ; } |
| 1190 | |
| 1191 | /** |
| 1192 | * Returns the number of undisplayed characters before the specified |
| 1193 | * nsTextFrame. |
| 1194 | */ |
| 1195 | static uint32_t GetUndisplayedCharactersBeforeFrame(nsTextFrame* aFrame) { |
| 1196 | void* value = aFrame->GetProperty(TextNodeCorrespondenceProperty()); |
| 1197 | TextNodeCorrespondence* correspondence = |
| 1198 | static_cast<TextNodeCorrespondence*>(value); |
| 1199 | if (!correspondence) { |
| 1200 | // FIXME bug 903785 |
| 1201 | NS_ERROR(do { NS_DebugBreak(NS_DEBUG_ASSERTION, "expected a TextNodeCorrespondenceProperty on nsTextFrame " "used for SVG text", "Error", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1203); MOZ_PretendNoReturn(); } while (0) |
| 1202 | "expected a TextNodeCorrespondenceProperty on nsTextFrame "do { NS_DebugBreak(NS_DEBUG_ASSERTION, "expected a TextNodeCorrespondenceProperty on nsTextFrame " "used for SVG text", "Error", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1203); MOZ_PretendNoReturn(); } while (0) |
| 1203 | "used for SVG text")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "expected a TextNodeCorrespondenceProperty on nsTextFrame " "used for SVG text", "Error", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1203); MOZ_PretendNoReturn(); } while (0); |
| 1204 | return 0; |
| 1205 | } |
| 1206 | return correspondence->mUndisplayedCharacters; |
| 1207 | } |
| 1208 | |
| 1209 | /** |
| 1210 | * Traverses the nsTextFrames for an SVGTextFrame and records a |
| 1211 | * TextNodeCorrespondenceProperty on each for the number of undisplayed DOM |
| 1212 | * characters between each frame. This is done by iterating simultaneously |
| 1213 | * over the Text and nsTextFrames and noting when Text (or |
| 1214 | * parts of them) are skipped when finding the next nsTextFrame. |
| 1215 | */ |
| 1216 | class TextNodeCorrespondenceRecorder { |
| 1217 | public: |
| 1218 | /** |
| 1219 | * Entry point for the TextNodeCorrespondenceProperty recording. |
| 1220 | */ |
| 1221 | static void RecordCorrespondence(SVGTextFrame* aRoot); |
| 1222 | |
| 1223 | private: |
| 1224 | explicit TextNodeCorrespondenceRecorder(SVGTextFrame* aRoot) |
| 1225 | : mNodeIterator(aRoot->GetContent()), |
| 1226 | mPreviousNode(nullptr), |
| 1227 | mNodeCharIndex(0) {} |
| 1228 | |
| 1229 | void Record(SVGTextFrame* aRoot); |
| 1230 | void TraverseAndRecord(nsIFrame* aFrame); |
| 1231 | |
| 1232 | /** |
| 1233 | * Returns the next non-empty Text. |
| 1234 | */ |
| 1235 | Text* NextNode(); |
| 1236 | |
| 1237 | /** |
| 1238 | * The iterator over the Text that we use as we simultaneously |
| 1239 | * iterate over the nsTextFrames. |
| 1240 | */ |
| 1241 | TextNodeIterator mNodeIterator; |
| 1242 | |
| 1243 | /** |
| 1244 | * The previous Text we iterated over. |
| 1245 | */ |
| 1246 | Text* mPreviousNode; |
| 1247 | |
| 1248 | /** |
| 1249 | * The index into the current Text's character content. |
| 1250 | */ |
| 1251 | uint32_t mNodeCharIndex; |
| 1252 | }; |
| 1253 | |
| 1254 | /* static */ |
| 1255 | void TextNodeCorrespondenceRecorder::RecordCorrespondence(SVGTextFrame* aRoot) { |
| 1256 | if (aRoot->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY)) { |
| 1257 | // Resolve bidi so that continuation frames are created if necessary: |
| 1258 | aRoot->MaybeResolveBidiForAnonymousBlockChild(); |
| 1259 | TextNodeCorrespondenceRecorder recorder(aRoot); |
| 1260 | recorder.Record(aRoot); |
| 1261 | aRoot->RemoveStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY); |
| 1262 | } |
| 1263 | } |
| 1264 | |
| 1265 | void TextNodeCorrespondenceRecorder::Record(SVGTextFrame* aRoot) { |
| 1266 | if (!mNodeIterator.Current()) { |
| 1267 | // If there are no Text nodes then there is nothing to do. |
| 1268 | return; |
| 1269 | } |
| 1270 | |
| 1271 | // Traverse over all the nsTextFrames and record the number of undisplayed |
| 1272 | // characters. |
| 1273 | TraverseAndRecord(aRoot); |
| 1274 | |
| 1275 | // Find how many undisplayed characters there are after the final nsTextFrame. |
| 1276 | uint32_t undisplayed = 0; |
| 1277 | if (mNodeIterator.Current()) { |
| 1278 | if (mPreviousNode && mPreviousNode->TextLength() != mNodeCharIndex) { |
| 1279 | // The last nsTextFrame ended part way through a Text node. The |
| 1280 | // remaining characters count as undisplayed. |
| 1281 | NS_ASSERTION(mNodeCharIndex < mPreviousNode->TextLength(),do { if (!(mNodeCharIndex < mPreviousNode->TextLength() )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "incorrect tracking of undisplayed characters in " "text nodes", "mNodeCharIndex < mPreviousNode->TextLength()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1283); MOZ_PretendNoReturn(); } } while (0) |
| 1282 | "incorrect tracking of undisplayed characters in "do { if (!(mNodeCharIndex < mPreviousNode->TextLength() )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "incorrect tracking of undisplayed characters in " "text nodes", "mNodeCharIndex < mPreviousNode->TextLength()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1283); MOZ_PretendNoReturn(); } } while (0) |
| 1283 | "text nodes")do { if (!(mNodeCharIndex < mPreviousNode->TextLength() )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "incorrect tracking of undisplayed characters in " "text nodes", "mNodeCharIndex < mPreviousNode->TextLength()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1283); MOZ_PretendNoReturn(); } } while (0); |
| 1284 | undisplayed += mPreviousNode->TextLength() - mNodeCharIndex; |
| 1285 | } |
| 1286 | // All the remaining Text that we iterate must also be undisplayed. |
| 1287 | for (Text* textNode = mNodeIterator.Current(); textNode; |
| 1288 | textNode = NextNode()) { |
| 1289 | undisplayed += textNode->TextLength(); |
| 1290 | } |
| 1291 | } |
| 1292 | |
| 1293 | // Record the trailing number of undisplayed characters on the |
| 1294 | // SVGTextFrame. |
| 1295 | aRoot->mTrailingUndisplayedCharacters = undisplayed; |
| 1296 | } |
| 1297 | |
| 1298 | Text* TextNodeCorrespondenceRecorder::NextNode() { |
| 1299 | mPreviousNode = mNodeIterator.Current(); |
| 1300 | Text* next; |
| 1301 | do { |
| 1302 | next = mNodeIterator.Next(); |
| 1303 | } while (next && next->TextLength() == 0); |
| 1304 | return next; |
| 1305 | } |
| 1306 | |
| 1307 | void TextNodeCorrespondenceRecorder::TraverseAndRecord(nsIFrame* aFrame) { |
| 1308 | // Recursively iterate over the frame tree, for frames that correspond |
| 1309 | // to text content elements. |
| 1310 | if (IsTextContentElement(aFrame->GetContent())) { |
| 1311 | for (nsIFrame* f : aFrame->PrincipalChildList()) { |
| 1312 | TraverseAndRecord(f); |
| 1313 | } |
| 1314 | return; |
| 1315 | } |
| 1316 | |
| 1317 | nsTextFrame* frame; // The current text frame. |
| 1318 | Text* node; // The text node for the current text frame. |
| 1319 | if (!GetNonEmptyTextFrameAndNode(aFrame, frame, node)) { |
| 1320 | // If this isn't an nsTextFrame, or is empty, nothing to do. |
| 1321 | return; |
| 1322 | } |
| 1323 | |
| 1324 | NS_ASSERTION(frame->GetContentOffset() >= 0,do { if (!(frame->GetContentOffset() >= 0)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "don't know how to handle negative content indexes" , "frame->GetContentOffset() >= 0", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1325); MOZ_PretendNoReturn(); } } while (0) |
| 1325 | "don't know how to handle negative content indexes")do { if (!(frame->GetContentOffset() >= 0)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "don't know how to handle negative content indexes" , "frame->GetContentOffset() >= 0", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1325); MOZ_PretendNoReturn(); } } while (0); |
| 1326 | |
| 1327 | uint32_t undisplayed = 0; |
| 1328 | if (!mPreviousNode) { |
| 1329 | // Must be the very first text frame. |
| 1330 | NS_ASSERTION(mNodeCharIndex == 0,do { if (!(mNodeCharIndex == 0)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "incorrect tracking of undisplayed " "characters in text nodes" , "mNodeCharIndex == 0", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1332); MOZ_PretendNoReturn(); } } while (0) |
| 1331 | "incorrect tracking of undisplayed "do { if (!(mNodeCharIndex == 0)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "incorrect tracking of undisplayed " "characters in text nodes" , "mNodeCharIndex == 0", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1332); MOZ_PretendNoReturn(); } } while (0) |
| 1332 | "characters in text nodes")do { if (!(mNodeCharIndex == 0)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "incorrect tracking of undisplayed " "characters in text nodes" , "mNodeCharIndex == 0", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1332); MOZ_PretendNoReturn(); } } while (0); |
| 1333 | if (!mNodeIterator.Current()) { |
| 1334 | 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: " "incorrect tracking of correspondence between " "text frames and text nodes" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1336); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "incorrect tracking of correspondence between " "text frames and text nodes" ")"); do { *((volatile int*)__null ) = 1336; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 1335 | "incorrect tracking of correspondence between "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: " "incorrect tracking of correspondence between " "text frames and text nodes" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1336); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "incorrect tracking of correspondence between " "text frames and text nodes" ")"); do { *((volatile int*)__null ) = 1336; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 1336 | "text frames and text nodes")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: " "incorrect tracking of correspondence between " "text frames and text nodes" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1336); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "incorrect tracking of correspondence between " "text frames and text nodes" ")"); do { *((volatile int*)__null ) = 1336; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); |
| 1337 | } else { |
| 1338 | // Each whole Text we find before we get to the text node for the |
| 1339 | // first text frame must be undisplayed. |
| 1340 | while (mNodeIterator.Current() != node) { |
| 1341 | undisplayed += mNodeIterator.Current()->TextLength(); |
| 1342 | NextNode(); |
| 1343 | } |
| 1344 | // If the first text frame starts at a non-zero content offset, then those |
| 1345 | // earlier characters are also undisplayed. |
| 1346 | undisplayed += frame->GetContentOffset(); |
| 1347 | NextNode(); |
| 1348 | } |
| 1349 | } else if (mPreviousNode == node) { |
| 1350 | // Same text node as last time. |
| 1351 | if (static_cast<uint32_t>(frame->GetContentOffset()) != mNodeCharIndex) { |
| 1352 | // We have some characters in the middle of the text node |
| 1353 | // that are undisplayed. |
| 1354 | NS_ASSERTION(do { if (!(mNodeCharIndex < static_cast<uint32_t>(frame ->GetContentOffset()))) { NS_DebugBreak(NS_DEBUG_ASSERTION , "incorrect tracking of undisplayed characters in " "text nodes" , "mNodeCharIndex < static_cast<uint32_t>(frame->GetContentOffset())" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1357); MOZ_PretendNoReturn(); } } while (0) |
| 1355 | mNodeCharIndex < static_cast<uint32_t>(frame->GetContentOffset()),do { if (!(mNodeCharIndex < static_cast<uint32_t>(frame ->GetContentOffset()))) { NS_DebugBreak(NS_DEBUG_ASSERTION , "incorrect tracking of undisplayed characters in " "text nodes" , "mNodeCharIndex < static_cast<uint32_t>(frame->GetContentOffset())" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1357); MOZ_PretendNoReturn(); } } while (0) |
| 1356 | "incorrect tracking of undisplayed characters in "do { if (!(mNodeCharIndex < static_cast<uint32_t>(frame ->GetContentOffset()))) { NS_DebugBreak(NS_DEBUG_ASSERTION , "incorrect tracking of undisplayed characters in " "text nodes" , "mNodeCharIndex < static_cast<uint32_t>(frame->GetContentOffset())" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1357); MOZ_PretendNoReturn(); } } while (0) |
| 1357 | "text nodes")do { if (!(mNodeCharIndex < static_cast<uint32_t>(frame ->GetContentOffset()))) { NS_DebugBreak(NS_DEBUG_ASSERTION , "incorrect tracking of undisplayed characters in " "text nodes" , "mNodeCharIndex < static_cast<uint32_t>(frame->GetContentOffset())" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1357); MOZ_PretendNoReturn(); } } while (0); |
| 1358 | undisplayed = frame->GetContentOffset() - mNodeCharIndex; |
| 1359 | } |
| 1360 | } else { |
| 1361 | // Different text node from last time. |
| 1362 | if (mPreviousNode->TextLength() != mNodeCharIndex) { |
| 1363 | NS_ASSERTION(mNodeCharIndex < mPreviousNode->TextLength(),do { if (!(mNodeCharIndex < mPreviousNode->TextLength() )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "incorrect tracking of undisplayed characters in " "text nodes", "mNodeCharIndex < mPreviousNode->TextLength()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1365); MOZ_PretendNoReturn(); } } while (0) |
| 1364 | "incorrect tracking of undisplayed characters in "do { if (!(mNodeCharIndex < mPreviousNode->TextLength() )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "incorrect tracking of undisplayed characters in " "text nodes", "mNodeCharIndex < mPreviousNode->TextLength()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1365); MOZ_PretendNoReturn(); } } while (0) |
| 1365 | "text nodes")do { if (!(mNodeCharIndex < mPreviousNode->TextLength() )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "incorrect tracking of undisplayed characters in " "text nodes", "mNodeCharIndex < mPreviousNode->TextLength()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1365); MOZ_PretendNoReturn(); } } while (0); |
| 1366 | // Any trailing characters at the end of the previous Text are |
| 1367 | // undisplayed. |
| 1368 | undisplayed = mPreviousNode->TextLength() - mNodeCharIndex; |
| 1369 | } |
| 1370 | // Each whole Text we find before we get to the text node for |
| 1371 | // the current text frame must be undisplayed. |
| 1372 | while (mNodeIterator.Current() && mNodeIterator.Current() != node) { |
| 1373 | undisplayed += mNodeIterator.Current()->TextLength(); |
| 1374 | NextNode(); |
| 1375 | } |
| 1376 | // If the current text frame starts at a non-zero content offset, then those |
| 1377 | // earlier characters are also undisplayed. |
| 1378 | undisplayed += frame->GetContentOffset(); |
| 1379 | NextNode(); |
| 1380 | } |
| 1381 | |
| 1382 | // Set the frame property. |
| 1383 | frame->SetProperty(TextNodeCorrespondenceProperty(), |
| 1384 | new TextNodeCorrespondence(undisplayed)); |
| 1385 | |
| 1386 | // Remember how far into the current Text we are. |
| 1387 | mNodeCharIndex = frame->GetContentEnd(); |
| 1388 | } |
| 1389 | |
| 1390 | // ---------------------------------------------------------------------------- |
| 1391 | // TextFrameIterator |
| 1392 | |
| 1393 | /** |
| 1394 | * An iterator class for nsTextFrames that are descendants of an |
| 1395 | * SVGTextFrame. The iterator can optionally track whether the |
| 1396 | * current nsTextFrame is for a descendant of, or past, a given subtree |
| 1397 | * content node or frame. (This functionality is used for example by the SVG |
| 1398 | * DOM text methods to get only the nsTextFrames for a particular <tspan>.) |
| 1399 | * |
| 1400 | * TextFrameIterator also tracks and exposes other information about the |
| 1401 | * current nsTextFrame: |
| 1402 | * |
| 1403 | * * how many undisplayed characters came just before it |
| 1404 | * * its position (in app units) relative to the SVGTextFrame's anonymous |
| 1405 | * block frame |
| 1406 | * * what nsInlineFrame corresponding to a <textPath> element it is a |
| 1407 | * descendant of |
| 1408 | * * what computed dominant-baseline value applies to it |
| 1409 | * |
| 1410 | * Note that any text frames that are empty -- whose ContentLength() is 0 -- |
| 1411 | * will be skipped over. |
| 1412 | */ |
| 1413 | class MOZ_STACK_CLASS TextFrameIterator { |
| 1414 | public: |
| 1415 | /** |
| 1416 | * Constructs a TextFrameIterator for the specified SVGTextFrame |
| 1417 | * with an optional frame subtree to restrict iterated text frames to. |
| 1418 | */ |
| 1419 | explicit TextFrameIterator(SVGTextFrame* aRoot, |
| 1420 | const nsIFrame* aSubtree = nullptr) |
| 1421 | : mRootFrame(aRoot), |
| 1422 | mSubtree(aSubtree), |
| 1423 | mCurrentFrame(aRoot), |
| 1424 | mSubtreePosition(mSubtree ? eBeforeSubtree : eWithinSubtree) { |
| 1425 | Init(); |
| 1426 | } |
| 1427 | |
| 1428 | /** |
| 1429 | * Constructs a TextFrameIterator for the specified SVGTextFrame |
| 1430 | * with an optional frame content subtree to restrict iterated text frames to. |
| 1431 | */ |
| 1432 | TextFrameIterator(SVGTextFrame* aRoot, nsIContent* aSubtree) |
| 1433 | : mRootFrame(aRoot), |
| 1434 | mSubtree(aRoot && aSubtree && aSubtree != aRoot->GetContent() |
| 1435 | ? aSubtree->GetPrimaryFrame() |
| 1436 | : nullptr), |
| 1437 | mCurrentFrame(aRoot), |
| 1438 | mSubtreePosition(mSubtree ? eBeforeSubtree : eWithinSubtree) { |
| 1439 | Init(); |
| 1440 | } |
| 1441 | |
| 1442 | /** |
| 1443 | * Returns the root SVGTextFrame this TextFrameIterator is iterating over. |
| 1444 | */ |
| 1445 | SVGTextFrame* Root() const { return mRootFrame; } |
| 1446 | |
| 1447 | /** |
| 1448 | * Returns the current nsTextFrame. |
| 1449 | */ |
| 1450 | nsTextFrame* Current() const { return do_QueryFrame(mCurrentFrame); } |
| 1451 | |
| 1452 | /** |
| 1453 | * Returns the number of undisplayed characters in the DOM just before the |
| 1454 | * current frame. |
| 1455 | */ |
| 1456 | uint32_t UndisplayedCharacters() const; |
| 1457 | |
| 1458 | /** |
| 1459 | * Returns the current frame's position, in app units, relative to the |
| 1460 | * root SVGTextFrame's anonymous block frame. |
| 1461 | */ |
| 1462 | nsPoint Position() const { return mCurrentPosition; } |
| 1463 | |
| 1464 | /** |
| 1465 | * Advances to the next nsTextFrame and returns it. |
| 1466 | */ |
| 1467 | nsTextFrame* Next(); |
| 1468 | |
| 1469 | /** |
| 1470 | * Returns whether the iterator is within the subtree. |
| 1471 | */ |
| 1472 | bool IsWithinSubtree() const { return mSubtreePosition == eWithinSubtree; } |
| 1473 | |
| 1474 | /** |
| 1475 | * Returns whether the iterator is past the subtree. |
| 1476 | */ |
| 1477 | bool IsAfterSubtree() const { return mSubtreePosition == eAfterSubtree; } |
| 1478 | |
| 1479 | /** |
| 1480 | * Returns the frame corresponding to the <textPath> element, if we |
| 1481 | * are inside one. |
| 1482 | */ |
| 1483 | nsIFrame* TextPathFrame() const { |
| 1484 | return mTextPathFrames.IsEmpty() ? nullptr : mTextPathFrames.LastElement(); |
| 1485 | } |
| 1486 | |
| 1487 | /** |
| 1488 | * Returns the current frame's computed dominant-baseline value. |
| 1489 | */ |
| 1490 | StyleDominantBaseline DominantBaseline() const { |
| 1491 | return mBaselines.LastElement(); |
| 1492 | } |
| 1493 | |
| 1494 | /** |
| 1495 | * Finishes the iterator. |
| 1496 | */ |
| 1497 | void Close() { mCurrentFrame = nullptr; } |
| 1498 | |
| 1499 | private: |
| 1500 | /** |
| 1501 | * Initializes the iterator and advances to the first item. |
| 1502 | */ |
| 1503 | void Init() { |
| 1504 | if (!mRootFrame) { |
| 1505 | return; |
| 1506 | } |
| 1507 | |
| 1508 | mBaselines.AppendElement(mRootFrame->StyleSVG()->mDominantBaseline); |
| 1509 | Next(); |
| 1510 | } |
| 1511 | |
| 1512 | /** |
| 1513 | * Pushes the specified frame's computed dominant-baseline value. |
| 1514 | * If the value of the property is "auto", then the parent frame's |
| 1515 | * computed value is used. |
| 1516 | */ |
| 1517 | void PushBaseline(nsIFrame* aNextFrame); |
| 1518 | |
| 1519 | /** |
| 1520 | * Pops the current dominant-baseline off the stack. |
| 1521 | */ |
| 1522 | void PopBaseline(); |
| 1523 | |
| 1524 | /** |
| 1525 | * The root frame we are iterating through. |
| 1526 | */ |
| 1527 | SVGTextFrame* const mRootFrame; |
| 1528 | |
| 1529 | /** |
| 1530 | * The frame for the subtree we are also interested in tracking. |
| 1531 | */ |
| 1532 | const nsIFrame* const mSubtree; |
| 1533 | |
| 1534 | /** |
| 1535 | * The current value of the iterator. |
| 1536 | */ |
| 1537 | nsIFrame* mCurrentFrame; |
| 1538 | |
| 1539 | /** |
| 1540 | * The position, in app units, of the current frame relative to mRootFrame. |
| 1541 | */ |
| 1542 | nsPoint mCurrentPosition; |
| 1543 | |
| 1544 | /** |
| 1545 | * Stack of frames corresponding to <textPath> elements that are in scope |
| 1546 | * for the current frame. |
| 1547 | */ |
| 1548 | AutoTArray<nsIFrame*, 1> mTextPathFrames; |
| 1549 | |
| 1550 | /** |
| 1551 | * Stack of dominant-baseline values to record as we traverse through the |
| 1552 | * frame tree. |
| 1553 | */ |
| 1554 | AutoTArray<StyleDominantBaseline, 8> mBaselines; |
| 1555 | |
| 1556 | /** |
| 1557 | * The iterator's current position relative to mSubtree. |
| 1558 | */ |
| 1559 | SubtreePosition mSubtreePosition; |
| 1560 | }; |
| 1561 | |
| 1562 | uint32_t TextFrameIterator::UndisplayedCharacters() const { |
| 1563 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY)" " (" "Text correspondence must be up to date" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1565); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY)" ") (" "Text correspondence must be up to date" ")"); do { *( (volatile int*)__null) = 1565; __attribute__((nomerge)) ::abort (); } while (false); } } while (false) |
| 1564 | !mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY)" " (" "Text correspondence must be up to date" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1565); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY)" ") (" "Text correspondence must be up to date" ")"); do { *( (volatile int*)__null) = 1565; __attribute__((nomerge)) ::abort (); } while (false); } } while (false) |
| 1565 | "Text correspondence must be up to date")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY)" " (" "Text correspondence must be up to date" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1565); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!mRootFrame->HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY)" ") (" "Text correspondence must be up to date" ")"); do { *( (volatile int*)__null) = 1565; __attribute__((nomerge)) ::abort (); } while (false); } } while (false); |
| 1566 | |
| 1567 | if (!mCurrentFrame) { |
| 1568 | return mRootFrame->mTrailingUndisplayedCharacters; |
| 1569 | } |
| 1570 | |
| 1571 | nsTextFrame* frame = do_QueryFrame(mCurrentFrame); |
| 1572 | return GetUndisplayedCharactersBeforeFrame(frame); |
| 1573 | } |
| 1574 | |
| 1575 | nsTextFrame* TextFrameIterator::Next() { |
| 1576 | // Starting from mCurrentFrame, we do a non-recursive traversal to the next |
| 1577 | // nsTextFrame beneath mRoot, updating mSubtreePosition appropriately if we |
| 1578 | // encounter mSubtree. |
| 1579 | if (mCurrentFrame) { |
| 1580 | do { |
| 1581 | nsIFrame* next = IsTextContentElement(mCurrentFrame->GetContent()) |
| 1582 | ? mCurrentFrame->PrincipalChildList().FirstChild() |
| 1583 | : nullptr; |
| 1584 | if (next) { |
| 1585 | // Descend into this frame, and accumulate its position. |
| 1586 | mCurrentPosition += next->GetPosition(); |
| 1587 | if (next->GetContent()->IsSVGElement(nsGkAtoms::textPath)) { |
| 1588 | // Record this <textPath> frame. |
| 1589 | mTextPathFrames.AppendElement(next); |
| 1590 | } |
| 1591 | // Record the frame's baseline. |
| 1592 | PushBaseline(next); |
| 1593 | mCurrentFrame = next; |
| 1594 | if (mCurrentFrame == mSubtree) { |
| 1595 | // If the current frame is mSubtree, we have now moved into it. |
| 1596 | mSubtreePosition = eWithinSubtree; |
| 1597 | } |
| 1598 | } else { |
| 1599 | for (;;) { |
| 1600 | // We want to move past the current frame. |
| 1601 | if (mCurrentFrame == mRootFrame) { |
| 1602 | // If we've reached the root frame, we're finished. |
| 1603 | mCurrentFrame = nullptr; |
| 1604 | break; |
| 1605 | } |
| 1606 | // Remove the current frame's position. |
| 1607 | mCurrentPosition -= mCurrentFrame->GetPosition(); |
| 1608 | if (mCurrentFrame->GetContent()->IsSVGElement(nsGkAtoms::textPath)) { |
| 1609 | // Pop off the <textPath> frame if this is a <textPath>. |
| 1610 | mTextPathFrames.RemoveLastElement(); |
| 1611 | } |
| 1612 | // Pop off the current baseline. |
| 1613 | PopBaseline(); |
| 1614 | if (mCurrentFrame == mSubtree) { |
| 1615 | // If this was mSubtree, we have now moved past it. |
| 1616 | mSubtreePosition = eAfterSubtree; |
| 1617 | } |
| 1618 | next = mCurrentFrame->GetNextSibling(); |
| 1619 | if (next) { |
| 1620 | // Moving to the next sibling. |
| 1621 | mCurrentPosition += next->GetPosition(); |
| 1622 | if (next->GetContent()->IsSVGElement(nsGkAtoms::textPath)) { |
| 1623 | // Record this <textPath> frame. |
| 1624 | mTextPathFrames.AppendElement(next); |
| 1625 | } |
| 1626 | // Record the frame's baseline. |
| 1627 | PushBaseline(next); |
| 1628 | mCurrentFrame = next; |
| 1629 | if (mCurrentFrame == mSubtree) { |
| 1630 | // If the current frame is mSubtree, we have now moved into it. |
| 1631 | mSubtreePosition = eWithinSubtree; |
| 1632 | } |
| 1633 | break; |
| 1634 | } |
| 1635 | if (mCurrentFrame == mSubtree) { |
| 1636 | // If there is no next sibling frame, and the current frame is |
| 1637 | // mSubtree, we have now moved past it. |
| 1638 | mSubtreePosition = eAfterSubtree; |
| 1639 | } |
| 1640 | // Ascend out of this frame. |
| 1641 | mCurrentFrame = mCurrentFrame->GetParent(); |
| 1642 | } |
| 1643 | } |
| 1644 | } while (mCurrentFrame && !IsNonEmptyTextFrame(mCurrentFrame)); |
| 1645 | } |
| 1646 | |
| 1647 | return Current(); |
| 1648 | } |
| 1649 | |
| 1650 | void TextFrameIterator::PushBaseline(nsIFrame* aNextFrame) { |
| 1651 | StyleDominantBaseline baseline = aNextFrame->StyleSVG()->mDominantBaseline; |
| 1652 | mBaselines.AppendElement(baseline); |
| 1653 | } |
| 1654 | |
| 1655 | void TextFrameIterator::PopBaseline() { |
| 1656 | NS_ASSERTION(!mBaselines.IsEmpty(), "popped too many baselines")do { if (!(!mBaselines.IsEmpty())) { NS_DebugBreak(NS_DEBUG_ASSERTION , "popped too many baselines", "!mBaselines.IsEmpty()", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1656); MOZ_PretendNoReturn(); } } while (0); |
| 1657 | mBaselines.RemoveLastElement(); |
| 1658 | } |
| 1659 | |
| 1660 | // ----------------------------------------------------------------------------- |
| 1661 | // TextRenderedRunIterator |
| 1662 | |
| 1663 | /** |
| 1664 | * Iterator for TextRenderedRun objects for the SVGTextFrame. |
| 1665 | */ |
| 1666 | class TextRenderedRunIterator { |
| 1667 | public: |
| 1668 | /** |
| 1669 | * Values for the aFilter argument of the constructor, to indicate which |
| 1670 | * frames we should be limited to iterating TextRenderedRun objects for. |
| 1671 | */ |
| 1672 | enum RenderedRunFilter { |
| 1673 | // Iterate TextRenderedRuns for all nsTextFrames. |
| 1674 | eAllFrames, |
| 1675 | // Iterate only TextRenderedRuns for nsTextFrames that are |
| 1676 | // visibility:visible. |
| 1677 | eVisibleFrames |
| 1678 | }; |
| 1679 | |
| 1680 | /** |
| 1681 | * Constructs a TextRenderedRunIterator with an optional frame subtree to |
| 1682 | * restrict iterated rendered runs to. |
| 1683 | * |
| 1684 | * @param aSVGTextFrame The SVGTextFrame whose rendered runs to iterate |
| 1685 | * through. |
| 1686 | * @param aFilter Indicates whether to iterate rendered runs for non-visible |
| 1687 | * nsTextFrames. |
| 1688 | * @param aSubtree An optional frame subtree to restrict iterated rendered |
| 1689 | * runs to. |
| 1690 | */ |
| 1691 | explicit TextRenderedRunIterator(SVGTextFrame* aSVGTextFrame, |
| 1692 | RenderedRunFilter aFilter = eAllFrames, |
| 1693 | const nsIFrame* aSubtree = nullptr) |
| 1694 | : mFrameIterator(FrameIfAnonymousChildReflowed(aSVGTextFrame), aSubtree), |
| 1695 | mFilter(aFilter), |
| 1696 | mTextElementCharIndex(0), |
| 1697 | mFrameStartTextElementCharIndex(0), |
| 1698 | mFontSizeScaleFactor(aSVGTextFrame->mFontSizeScaleFactor), |
| 1699 | mCurrent(First()) {} |
| 1700 | |
| 1701 | /** |
| 1702 | * Constructs a TextRenderedRunIterator with a content subtree to restrict |
| 1703 | * iterated rendered runs to. |
| 1704 | * |
| 1705 | * @param aSVGTextFrame The SVGTextFrame whose rendered runs to iterate |
| 1706 | * through. |
| 1707 | * @param aFilter Indicates whether to iterate rendered runs for non-visible |
| 1708 | * nsTextFrames. |
| 1709 | * @param aSubtree A content subtree to restrict iterated rendered runs to. |
| 1710 | */ |
| 1711 | TextRenderedRunIterator(SVGTextFrame* aSVGTextFrame, |
| 1712 | RenderedRunFilter aFilter, nsIContent* aSubtree) |
| 1713 | : mFrameIterator(FrameIfAnonymousChildReflowed(aSVGTextFrame), aSubtree), |
| 1714 | mFilter(aFilter), |
| 1715 | mTextElementCharIndex(0), |
| 1716 | mFrameStartTextElementCharIndex(0), |
| 1717 | mFontSizeScaleFactor(aSVGTextFrame->mFontSizeScaleFactor), |
| 1718 | mCurrent(First()) {} |
| 1719 | |
| 1720 | /** |
| 1721 | * Returns the current TextRenderedRun. |
| 1722 | */ |
| 1723 | TextRenderedRun Current() const { return mCurrent; } |
| 1724 | |
| 1725 | /** |
| 1726 | * Advances to the next TextRenderedRun and returns it. |
| 1727 | */ |
| 1728 | TextRenderedRun Next(); |
| 1729 | |
| 1730 | private: |
| 1731 | /** |
| 1732 | * Returns the root SVGTextFrame this iterator is for. |
| 1733 | */ |
| 1734 | SVGTextFrame* Root() const { return mFrameIterator.Root(); } |
| 1735 | |
| 1736 | /** |
| 1737 | * Advances to the first TextRenderedRun and returns it. |
| 1738 | */ |
| 1739 | TextRenderedRun First(); |
| 1740 | |
| 1741 | /** |
| 1742 | * The frame iterator to use. |
| 1743 | */ |
| 1744 | TextFrameIterator mFrameIterator; |
| 1745 | |
| 1746 | /** |
| 1747 | * The filter indicating which TextRenderedRuns to return. |
| 1748 | */ |
| 1749 | RenderedRunFilter mFilter; |
| 1750 | |
| 1751 | /** |
| 1752 | * The character index across the entire <text> element we are currently |
| 1753 | * up to. |
| 1754 | */ |
| 1755 | uint32_t mTextElementCharIndex; |
| 1756 | |
| 1757 | /** |
| 1758 | * The character index across the entire <text> for the start of the current |
| 1759 | * frame. |
| 1760 | */ |
| 1761 | uint32_t mFrameStartTextElementCharIndex; |
| 1762 | |
| 1763 | /** |
| 1764 | * The font-size scale factor we used when constructing the nsTextFrames. |
| 1765 | */ |
| 1766 | double mFontSizeScaleFactor; |
| 1767 | |
| 1768 | /** |
| 1769 | * The current TextRenderedRun. |
| 1770 | */ |
| 1771 | TextRenderedRun mCurrent; |
| 1772 | }; |
| 1773 | |
| 1774 | TextRenderedRun TextRenderedRunIterator::Next() { |
| 1775 | if (!mFrameIterator.Current()) { |
| 1776 | // If there are no more frames, then there are no more rendered runs to |
| 1777 | // return. |
| 1778 | mCurrent = TextRenderedRun(); |
| 1779 | return mCurrent; |
| 1780 | } |
| 1781 | |
| 1782 | // The values we will use to initialize the TextRenderedRun with. |
| 1783 | nsTextFrame* frame; |
| 1784 | gfxPoint pt; |
| 1785 | double rotate; |
| 1786 | nscoord baseline; |
| 1787 | uint32_t offset, length; |
| 1788 | uint32_t charIndex; |
| 1789 | |
| 1790 | // We loop, because we want to skip over rendered runs that either aren't |
| 1791 | // within our subtree of interest, because they don't match the filter, |
| 1792 | // or because they are hidden due to having fallen off the end of a |
| 1793 | // <textPath>. |
| 1794 | for (;;) { |
| 1795 | if (mFrameIterator.IsAfterSubtree()) { |
| 1796 | mCurrent = TextRenderedRun(); |
| 1797 | return mCurrent; |
| 1798 | } |
| 1799 | |
| 1800 | frame = mFrameIterator.Current(); |
| 1801 | |
| 1802 | charIndex = mTextElementCharIndex; |
| 1803 | |
| 1804 | // Find the end of the rendered run, by looking through the |
| 1805 | // SVGTextFrame's positions array until we find one that is recorded |
| 1806 | // as a run boundary. |
| 1807 | uint32_t runStart, |
| 1808 | runEnd; // XXX Replace runStart with mTextElementCharIndex. |
| 1809 | runStart = mTextElementCharIndex; |
| 1810 | runEnd = runStart + 1; |
| 1811 | while (runEnd < Root()->mPositions.Length() && |
| 1812 | !Root()->mPositions[runEnd].mRunBoundary) { |
| 1813 | runEnd++; |
| 1814 | } |
| 1815 | |
| 1816 | // Convert the global run start/end indexes into an offset/length into the |
| 1817 | // current frame's Text. |
| 1818 | offset = |
| 1819 | frame->GetContentOffset() + runStart - mFrameStartTextElementCharIndex; |
| 1820 | length = runEnd - runStart; |
| 1821 | |
| 1822 | // If the end of the frame's content comes before the run boundary we found |
| 1823 | // in SVGTextFrame's position array, we need to shorten the rendered run. |
| 1824 | uint32_t contentEnd = frame->GetContentEnd(); |
| 1825 | if (offset + length > contentEnd) { |
| 1826 | length = contentEnd - offset; |
| 1827 | } |
| 1828 | |
| 1829 | NS_ASSERTION(offset >= uint32_t(frame->GetContentOffset()),do { if (!(offset >= uint32_t(frame->GetContentOffset() ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "invalid offset", "offset >= uint32_t(frame->GetContentOffset())" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1830); MOZ_PretendNoReturn(); } } while (0) |
| 1830 | "invalid offset")do { if (!(offset >= uint32_t(frame->GetContentOffset() ))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "invalid offset", "offset >= uint32_t(frame->GetContentOffset())" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1830); MOZ_PretendNoReturn(); } } while (0); |
| 1831 | NS_ASSERTION(offset + length <= contentEnd, "invalid offset or length")do { if (!(offset + length <= contentEnd)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "invalid offset or length", "offset + length <= contentEnd" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 1831); MOZ_PretendNoReturn(); } } while (0); |
| 1832 | |
| 1833 | // Get the frame's baseline position. |
| 1834 | frame->EnsureTextRun(nsTextFrame::eInflated); |
| 1835 | baseline = GetBaselinePosition( |
| 1836 | frame, frame->GetTextRun(nsTextFrame::eInflated), |
| 1837 | mFrameIterator.DominantBaseline(), mFontSizeScaleFactor); |
| 1838 | |
| 1839 | // Trim the offset/length to remove any leading/trailing white space. |
| 1840 | uint32_t untrimmedOffset = offset; |
| 1841 | uint32_t untrimmedLength = length; |
| 1842 | nsTextFrame::TrimmedOffsets trimmedOffsets = |
| 1843 | frame->GetTrimmedOffsets(frame->TextFragment()); |
| 1844 | TrimOffsets(offset, length, trimmedOffsets); |
| 1845 | charIndex += offset - untrimmedOffset; |
| 1846 | |
| 1847 | // Get the position and rotation of the character that begins this |
| 1848 | // rendered run. |
| 1849 | pt = Root()->mPositions[charIndex].mPosition; |
| 1850 | rotate = Root()->mPositions[charIndex].mAngle; |
| 1851 | |
| 1852 | // Determine if we should skip this rendered run. |
| 1853 | bool skip = !mFrameIterator.IsWithinSubtree() || |
| 1854 | Root()->mPositions[mTextElementCharIndex].mHidden; |
| 1855 | if (mFilter == eVisibleFrames) { |
| 1856 | skip = skip || !frame->StyleVisibility()->IsVisible(); |
| 1857 | } |
| 1858 | |
| 1859 | // Update our global character index to move past the characters |
| 1860 | // corresponding to this rendered run. |
| 1861 | mTextElementCharIndex += untrimmedLength; |
| 1862 | |
| 1863 | // If we have moved past the end of the current frame's content, we need to |
| 1864 | // advance to the next frame. |
| 1865 | if (offset + untrimmedLength >= contentEnd) { |
| 1866 | mFrameIterator.Next(); |
| 1867 | mTextElementCharIndex += mFrameIterator.UndisplayedCharacters(); |
| 1868 | mFrameStartTextElementCharIndex = mTextElementCharIndex; |
| 1869 | } |
| 1870 | |
| 1871 | if (!mFrameIterator.Current()) { |
| 1872 | if (skip) { |
| 1873 | // That was the last frame, and we skipped this rendered run. So we |
| 1874 | // have no rendered run to return. |
| 1875 | mCurrent = TextRenderedRun(); |
| 1876 | return mCurrent; |
| 1877 | } |
| 1878 | break; |
| 1879 | } |
| 1880 | |
| 1881 | if (length && !skip) { |
| 1882 | // Only return a rendered run if it didn't get collapsed away entirely |
| 1883 | // (due to it being all white space) and if we don't want to skip it. |
| 1884 | break; |
| 1885 | } |
| 1886 | } |
| 1887 | |
| 1888 | mCurrent = TextRenderedRun(frame, pt, Root()->mLengthAdjustScaleFactor, |
| 1889 | rotate, mFontSizeScaleFactor, baseline, offset, |
| 1890 | length, charIndex); |
| 1891 | return mCurrent; |
| 1892 | } |
| 1893 | |
| 1894 | TextRenderedRun TextRenderedRunIterator::First() { |
| 1895 | if (!mFrameIterator.Current()) { |
| 1896 | return TextRenderedRun(); |
| 1897 | } |
| 1898 | |
| 1899 | if (Root()->mPositions.IsEmpty()) { |
| 1900 | mFrameIterator.Close(); |
| 1901 | return TextRenderedRun(); |
| 1902 | } |
| 1903 | |
| 1904 | // Get the character index for the start of this rendered run, by skipping |
| 1905 | // any undisplayed characters. |
| 1906 | mTextElementCharIndex = mFrameIterator.UndisplayedCharacters(); |
| 1907 | mFrameStartTextElementCharIndex = mTextElementCharIndex; |
| 1908 | |
| 1909 | return Next(); |
| 1910 | } |
| 1911 | |
| 1912 | // ----------------------------------------------------------------------------- |
| 1913 | // CharIterator |
| 1914 | |
| 1915 | /** |
| 1916 | * Iterator for characters within an SVGTextFrame. |
| 1917 | */ |
| 1918 | class MOZ_STACK_CLASS CharIterator { |
| 1919 | using Range = gfxTextRun::Range; |
| 1920 | |
| 1921 | public: |
| 1922 | /** |
| 1923 | * Values for the aFilter argument of the constructor, to indicate which |
| 1924 | * characters we should be iterating over. |
| 1925 | */ |
| 1926 | enum CharacterFilter { |
| 1927 | // Iterate over all original characters from the DOM that are within valid |
| 1928 | // text content elements. |
| 1929 | eOriginal, |
| 1930 | // Iterate only over characters that are not skipped characters. |
| 1931 | eUnskipped, |
| 1932 | // Iterate only over characters that are addressable by the positioning |
| 1933 | // attributes x="", y="", etc. This includes all characters after |
| 1934 | // collapsing white space as required by the value of 'white-space'. |
| 1935 | eAddressable, |
| 1936 | }; |
| 1937 | |
| 1938 | /** |
| 1939 | * Constructs a CharIterator. |
| 1940 | * |
| 1941 | * @param aSVGTextFrame The SVGTextFrame whose characters to iterate |
| 1942 | * through. |
| 1943 | * @param aFilter Indicates which characters to iterate over. |
| 1944 | * @param aSubtree A content subtree to track whether the current character |
| 1945 | * is within. |
| 1946 | */ |
| 1947 | CharIterator(SVGTextFrame* aSVGTextFrame, CharacterFilter aFilter, |
| 1948 | nsIContent* aSubtree, bool aPostReflow = true); |
| 1949 | |
| 1950 | /** |
| 1951 | * Returns whether the iterator is finished. |
| 1952 | */ |
| 1953 | bool AtEnd() const { return !mFrameIterator.Current(); } |
| 1954 | |
| 1955 | /** |
| 1956 | * Advances to the next matching character. Returns true if there was a |
| 1957 | * character to advance to, and false otherwise. |
| 1958 | */ |
| 1959 | bool Next(); |
| 1960 | |
| 1961 | /** |
| 1962 | * Advances ahead aCount matching characters. Returns true if there were |
| 1963 | * enough characters to advance past, and false otherwise. |
| 1964 | */ |
| 1965 | bool Next(uint32_t aCount); |
| 1966 | |
| 1967 | /** |
| 1968 | * Advances ahead up to aCount matching characters. |
| 1969 | */ |
| 1970 | void NextWithinSubtree(uint32_t aCount); |
| 1971 | |
| 1972 | /** |
| 1973 | * Advances to the character with the specified index. The index is in the |
| 1974 | * space of original characters (i.e., all DOM characters under the <text> |
| 1975 | * that are within valid text content elements). |
| 1976 | */ |
| 1977 | bool AdvanceToCharacter(uint32_t aTextElementCharIndex); |
| 1978 | |
| 1979 | /** |
| 1980 | * Advances to the first matching character after the current nsTextFrame. |
| 1981 | */ |
| 1982 | bool AdvancePastCurrentFrame(); |
| 1983 | |
| 1984 | /** |
| 1985 | * Advances to the first matching character after the frames within |
| 1986 | * the current <textPath>. |
| 1987 | */ |
| 1988 | bool AdvancePastCurrentTextPathFrame(); |
| 1989 | |
| 1990 | /** |
| 1991 | * Advances to the first matching character of the subtree. Returns true |
| 1992 | * if we successfully advance to the subtree, or if we are already within |
| 1993 | * the subtree. Returns false if we are past the subtree. |
| 1994 | */ |
| 1995 | bool AdvanceToSubtree(); |
| 1996 | |
| 1997 | /** |
| 1998 | * Returns the nsTextFrame for the current character. |
| 1999 | */ |
| 2000 | nsTextFrame* TextFrame() const { return mFrameIterator.Current(); } |
| 2001 | |
| 2002 | /** |
| 2003 | * Returns whether the iterator is within the subtree. |
| 2004 | */ |
| 2005 | bool IsWithinSubtree() const { return mFrameIterator.IsWithinSubtree(); } |
| 2006 | |
| 2007 | /** |
| 2008 | * Returns whether the iterator is past the subtree. |
| 2009 | */ |
| 2010 | bool IsAfterSubtree() const { return mFrameIterator.IsAfterSubtree(); } |
| 2011 | |
| 2012 | /** |
| 2013 | * Returns whether the current character is a skipped character. |
| 2014 | */ |
| 2015 | bool IsOriginalCharSkipped() const { |
| 2016 | return mSkipCharsIterator.IsOriginalCharSkipped(); |
| 2017 | } |
| 2018 | |
| 2019 | /** |
| 2020 | * Returns whether the current character is the start of a cluster and |
| 2021 | * ligature group. |
| 2022 | */ |
| 2023 | bool IsClusterAndLigatureGroupStart() const { |
| 2024 | return mTextRun->IsLigatureGroupStart( |
| 2025 | mSkipCharsIterator.GetSkippedOffset()) && |
| 2026 | mTextRun->IsClusterStart(mSkipCharsIterator.GetSkippedOffset()); |
| 2027 | } |
| 2028 | |
| 2029 | /** |
| 2030 | * Returns the glyph run for the current character. |
| 2031 | */ |
| 2032 | const gfxTextRun::GlyphRun& GlyphRun() const { |
| 2033 | return *mTextRun->FindFirstGlyphRunContaining( |
| 2034 | mSkipCharsIterator.GetSkippedOffset()); |
| 2035 | } |
| 2036 | |
| 2037 | /** |
| 2038 | * Returns whether the current character is trimmed away when painting, |
| 2039 | * due to it being leading/trailing white space. |
| 2040 | */ |
| 2041 | bool IsOriginalCharTrimmed() const; |
| 2042 | |
| 2043 | /** |
| 2044 | * Returns whether the current character is unaddressable from the SVG glyph |
| 2045 | * positioning attributes. |
| 2046 | */ |
| 2047 | bool IsOriginalCharUnaddressable() const { |
| 2048 | return IsOriginalCharSkipped() || IsOriginalCharTrimmed(); |
| 2049 | } |
| 2050 | |
| 2051 | /** |
| 2052 | * Returns the text run for the current character. |
| 2053 | */ |
| 2054 | gfxTextRun* TextRun() const { return mTextRun; } |
| 2055 | |
| 2056 | /** |
| 2057 | * Returns the current character index. |
| 2058 | */ |
| 2059 | uint32_t TextElementCharIndex() const { return mTextElementCharIndex; } |
| 2060 | |
| 2061 | /** |
| 2062 | * Returns the character index for the start of the cluster/ligature group it |
| 2063 | * is part of. |
| 2064 | */ |
| 2065 | uint32_t GlyphStartTextElementCharIndex() const { |
| 2066 | return mGlyphStartTextElementCharIndex; |
| 2067 | } |
| 2068 | |
| 2069 | /** |
| 2070 | * Gets the advance, in user units, of the current character. If the |
| 2071 | * character is a part of ligature, then the advance returned will be |
| 2072 | * a fraction of the ligature glyph's advance. |
| 2073 | * |
| 2074 | * @param aContext The context to use for unit conversions. |
| 2075 | */ |
| 2076 | gfxFloat GetAdvance(nsPresContext* aContext) const; |
| 2077 | |
| 2078 | /** |
| 2079 | * Returns the frame corresponding to the <textPath> that the current |
| 2080 | * character is within. |
| 2081 | */ |
| 2082 | nsIFrame* TextPathFrame() const { return mFrameIterator.TextPathFrame(); } |
| 2083 | |
| 2084 | #ifdef DEBUG1 |
| 2085 | /** |
| 2086 | * Returns the subtree we were constructed with. |
| 2087 | */ |
| 2088 | nsIContent* GetSubtree() const { return mSubtree; } |
| 2089 | |
| 2090 | /** |
| 2091 | * Returns the CharacterFilter mode in use. |
| 2092 | */ |
| 2093 | CharacterFilter Filter() const { return mFilter; } |
| 2094 | #endif |
| 2095 | |
| 2096 | private: |
| 2097 | /** |
| 2098 | * Advances to the next character without checking it against the filter. |
| 2099 | * Returns true if there was a next character to advance to, or false |
| 2100 | * otherwise. |
| 2101 | */ |
| 2102 | bool NextCharacter(); |
| 2103 | |
| 2104 | /** |
| 2105 | * Returns whether the current character matches the filter. |
| 2106 | */ |
| 2107 | bool MatchesFilter() const; |
| 2108 | |
| 2109 | /** |
| 2110 | * If this is the start of a glyph, record it. |
| 2111 | */ |
| 2112 | void UpdateGlyphStartTextElementCharIndex() { |
| 2113 | if (!IsOriginalCharSkipped() && IsClusterAndLigatureGroupStart()) { |
| 2114 | mGlyphStartTextElementCharIndex = mTextElementCharIndex; |
| 2115 | } |
| 2116 | } |
| 2117 | |
| 2118 | /** |
| 2119 | * The filter to use. |
| 2120 | */ |
| 2121 | CharacterFilter mFilter; |
| 2122 | |
| 2123 | /** |
| 2124 | * The iterator for text frames. |
| 2125 | */ |
| 2126 | TextFrameIterator mFrameIterator; |
| 2127 | |
| 2128 | #ifdef DEBUG1 |
| 2129 | /** |
| 2130 | * The subtree we were constructed with. |
| 2131 | */ |
| 2132 | nsIContent* const mSubtree; |
| 2133 | #endif |
| 2134 | |
| 2135 | /** |
| 2136 | * A gfxSkipCharsIterator for the text frame the current character is |
| 2137 | * a part of. |
| 2138 | */ |
| 2139 | gfxSkipCharsIterator mSkipCharsIterator; |
| 2140 | |
| 2141 | // Cache for information computed by IsOriginalCharTrimmed. |
| 2142 | mutable nsTextFrame* mFrameForTrimCheck; |
| 2143 | mutable uint32_t mTrimmedOffset; |
| 2144 | mutable uint32_t mTrimmedLength; |
| 2145 | |
| 2146 | /** |
| 2147 | * The text run the current character is a part of. |
| 2148 | */ |
| 2149 | gfxTextRun* mTextRun; |
| 2150 | |
| 2151 | /** |
| 2152 | * The current character's index. |
| 2153 | */ |
| 2154 | uint32_t mTextElementCharIndex; |
| 2155 | |
| 2156 | /** |
| 2157 | * The index of the character that starts the cluster/ligature group the |
| 2158 | * current character is a part of. |
| 2159 | */ |
| 2160 | uint32_t mGlyphStartTextElementCharIndex; |
| 2161 | |
| 2162 | /** |
| 2163 | * The scale factor to apply to glyph advances returned by |
| 2164 | * GetAdvance etc. to take into account textLength="". |
| 2165 | */ |
| 2166 | float mLengthAdjustScaleFactor; |
| 2167 | |
| 2168 | /** |
| 2169 | * Whether the instance of this class is being used after reflow has occurred |
| 2170 | * or not. |
| 2171 | */ |
| 2172 | bool mPostReflow; |
| 2173 | }; |
| 2174 | |
| 2175 | CharIterator::CharIterator(SVGTextFrame* aSVGTextFrame, |
| 2176 | CharIterator::CharacterFilter aFilter, |
| 2177 | nsIContent* aSubtree, bool aPostReflow) |
| 2178 | : mFilter(aFilter), |
| 2179 | mFrameIterator(aSVGTextFrame, aSubtree), |
| 2180 | #ifdef DEBUG1 |
| 2181 | mSubtree(aSubtree), |
| 2182 | #endif |
| 2183 | mFrameForTrimCheck(nullptr), |
| 2184 | mTrimmedOffset(0), |
| 2185 | mTrimmedLength(0), |
| 2186 | mTextRun(nullptr), |
| 2187 | mTextElementCharIndex(0), |
| 2188 | mGlyphStartTextElementCharIndex(0), |
| 2189 | mLengthAdjustScaleFactor(aSVGTextFrame->mLengthAdjustScaleFactor), |
| 2190 | mPostReflow(aPostReflow) { |
| 2191 | if (!AtEnd()) { |
| 2192 | mSkipCharsIterator = TextFrame()->EnsureTextRun(nsTextFrame::eInflated); |
| 2193 | mTextRun = TextFrame()->GetTextRun(nsTextFrame::eInflated); |
| 2194 | mTextElementCharIndex = mFrameIterator.UndisplayedCharacters(); |
| 2195 | UpdateGlyphStartTextElementCharIndex(); |
| 2196 | if (!MatchesFilter()) { |
| 2197 | Next(); |
| 2198 | } |
| 2199 | } |
| 2200 | } |
| 2201 | |
| 2202 | bool CharIterator::Next() { |
| 2203 | while (NextCharacter()) { |
| 2204 | if (MatchesFilter()) { |
| 2205 | return true; |
| 2206 | } |
| 2207 | } |
| 2208 | return false; |
| 2209 | } |
| 2210 | |
| 2211 | bool CharIterator::Next(uint32_t aCount) { |
| 2212 | if (aCount == 0 && AtEnd()) { |
| 2213 | return false; |
| 2214 | } |
| 2215 | while (aCount) { |
| 2216 | if (!Next()) { |
| 2217 | return false; |
| 2218 | } |
| 2219 | aCount--; |
| 2220 | } |
| 2221 | return true; |
| 2222 | } |
| 2223 | |
| 2224 | void CharIterator::NextWithinSubtree(uint32_t aCount) { |
| 2225 | while (IsWithinSubtree() && aCount) { |
| 2226 | --aCount; |
| 2227 | if (!Next()) { |
| 2228 | return; |
| 2229 | } |
| 2230 | } |
| 2231 | } |
| 2232 | |
| 2233 | bool CharIterator::AdvanceToCharacter(uint32_t aTextElementCharIndex) { |
| 2234 | while (mTextElementCharIndex < aTextElementCharIndex) { |
| 2235 | if (!Next()) { |
| 2236 | return false; |
| 2237 | } |
| 2238 | } |
| 2239 | return true; |
| 2240 | } |
| 2241 | |
| 2242 | bool CharIterator::AdvancePastCurrentFrame() { |
| 2243 | // XXX Can do this better than one character at a time if it matters. |
| 2244 | nsTextFrame* currentFrame = TextFrame(); |
| 2245 | do { |
| 2246 | if (!Next()) { |
| 2247 | return false; |
| 2248 | } |
| 2249 | } while (TextFrame() == currentFrame); |
| 2250 | return true; |
| 2251 | } |
| 2252 | |
| 2253 | bool CharIterator::AdvancePastCurrentTextPathFrame() { |
| 2254 | nsIFrame* currentTextPathFrame = TextPathFrame(); |
| 2255 | NS_ASSERTION(currentTextPathFrame,do { if (!(currentTextPathFrame)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "expected AdvancePastCurrentTextPathFrame to be called only " "within a text path frame", "currentTextPathFrame", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2257); MOZ_PretendNoReturn(); } } while (0) |
| 2256 | "expected AdvancePastCurrentTextPathFrame to be called only "do { if (!(currentTextPathFrame)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "expected AdvancePastCurrentTextPathFrame to be called only " "within a text path frame", "currentTextPathFrame", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2257); MOZ_PretendNoReturn(); } } while (0) |
| 2257 | "within a text path frame")do { if (!(currentTextPathFrame)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "expected AdvancePastCurrentTextPathFrame to be called only " "within a text path frame", "currentTextPathFrame", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2257); MOZ_PretendNoReturn(); } } while (0); |
| 2258 | do { |
| 2259 | if (!AdvancePastCurrentFrame()) { |
| 2260 | return false; |
| 2261 | } |
| 2262 | } while (TextPathFrame() == currentTextPathFrame); |
| 2263 | return true; |
| 2264 | } |
| 2265 | |
| 2266 | bool CharIterator::AdvanceToSubtree() { |
| 2267 | while (!IsWithinSubtree()) { |
| 2268 | if (IsAfterSubtree()) { |
| 2269 | return false; |
| 2270 | } |
| 2271 | if (!AdvancePastCurrentFrame()) { |
| 2272 | return false; |
| 2273 | } |
| 2274 | } |
| 2275 | return true; |
| 2276 | } |
| 2277 | |
| 2278 | bool CharIterator::IsOriginalCharTrimmed() const { |
| 2279 | if (mFrameForTrimCheck != TextFrame()) { |
| 2280 | // Since we do a lot of trim checking, we cache the trimmed offsets and |
| 2281 | // lengths while we are in the same frame. |
| 2282 | mFrameForTrimCheck = TextFrame(); |
| 2283 | uint32_t offset = mFrameForTrimCheck->GetContentOffset(); |
| 2284 | uint32_t length = mFrameForTrimCheck->GetContentLength(); |
| 2285 | nsTextFrame::TrimmedOffsets trim = mFrameForTrimCheck->GetTrimmedOffsets( |
| 2286 | mFrameForTrimCheck->TextFragment(), |
| 2287 | (mPostReflow ? nsTextFrame::TrimmedOffsetFlags::Default |
| 2288 | : nsTextFrame::TrimmedOffsetFlags::NotPostReflow)); |
| 2289 | TrimOffsets(offset, length, trim); |
| 2290 | mTrimmedOffset = offset; |
| 2291 | mTrimmedLength = length; |
| 2292 | } |
| 2293 | |
| 2294 | // A character is trimmed if it is outside the mTrimmedOffset/mTrimmedLength |
| 2295 | // range and it is not a significant newline character. |
| 2296 | uint32_t index = mSkipCharsIterator.GetOriginalOffset(); |
| 2297 | return !( |
| 2298 | (index >= mTrimmedOffset && index < mTrimmedOffset + mTrimmedLength) || |
| 2299 | (index >= mTrimmedOffset + mTrimmedLength && |
| 2300 | mFrameForTrimCheck->StyleText()->NewlineIsSignificant( |
| 2301 | mFrameForTrimCheck) && |
| 2302 | mFrameForTrimCheck->TextFragment()->CharAt(index) == '\n')); |
| 2303 | } |
| 2304 | |
| 2305 | gfxFloat CharIterator::GetAdvance(nsPresContext* aContext) const { |
| 2306 | float cssPxPerDevPx = |
| 2307 | nsPresContext::AppUnitsToFloatCSSPixels(aContext->AppUnitsPerDevPixel()); |
| 2308 | |
| 2309 | gfxSkipCharsIterator start = |
| 2310 | TextFrame()->EnsureTextRun(nsTextFrame::eInflated); |
| 2311 | nsTextFrame::PropertyProvider provider(TextFrame(), start); |
| 2312 | |
| 2313 | uint32_t offset = mSkipCharsIterator.GetSkippedOffset(); |
| 2314 | gfxFloat advance = |
| 2315 | mTextRun->GetAdvanceWidth(Range(offset, offset + 1), &provider); |
| 2316 | return aContext->AppUnitsToGfxUnits(advance) * mLengthAdjustScaleFactor * |
| 2317 | cssPxPerDevPx; |
| 2318 | } |
| 2319 | |
| 2320 | bool CharIterator::NextCharacter() { |
| 2321 | if (AtEnd()) { |
| 2322 | return false; |
| 2323 | } |
| 2324 | |
| 2325 | mTextElementCharIndex++; |
| 2326 | |
| 2327 | // Advance within the current text run. |
| 2328 | mSkipCharsIterator.AdvanceOriginal(1); |
| 2329 | if (mSkipCharsIterator.GetOriginalOffset() < TextFrame()->GetContentEnd()) { |
| 2330 | // We're still within the part of the text run for the current text frame. |
| 2331 | UpdateGlyphStartTextElementCharIndex(); |
| 2332 | return true; |
| 2333 | } |
| 2334 | |
| 2335 | // Advance to the next frame. |
| 2336 | mFrameIterator.Next(); |
| 2337 | |
| 2338 | // Skip any undisplayed characters. |
| 2339 | uint32_t undisplayed = mFrameIterator.UndisplayedCharacters(); |
| 2340 | mTextElementCharIndex += undisplayed; |
| 2341 | if (!TextFrame()) { |
| 2342 | // We're at the end. |
| 2343 | mSkipCharsIterator = gfxSkipCharsIterator(); |
| 2344 | return false; |
| 2345 | } |
| 2346 | |
| 2347 | mSkipCharsIterator = TextFrame()->EnsureTextRun(nsTextFrame::eInflated); |
| 2348 | mTextRun = TextFrame()->GetTextRun(nsTextFrame::eInflated); |
| 2349 | UpdateGlyphStartTextElementCharIndex(); |
| 2350 | return true; |
| 2351 | } |
| 2352 | |
| 2353 | bool CharIterator::MatchesFilter() const { |
| 2354 | switch (mFilter) { |
| 2355 | case eOriginal: |
| 2356 | return true; |
| 2357 | case eUnskipped: |
| 2358 | return !IsOriginalCharSkipped(); |
| 2359 | case eAddressable: |
| 2360 | return !IsOriginalCharSkipped() && !IsOriginalCharUnaddressable(); |
| 2361 | } |
| 2362 | MOZ_ASSERT_UNREACHABLE("Invalid mFilter 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: " "Invalid mFilter value" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2362); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Invalid mFilter value" ")"); do { *((volatile int*)__null) = 2362; __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 2363 | return true; |
| 2364 | } |
| 2365 | |
| 2366 | // ----------------------------------------------------------------------------- |
| 2367 | // SVGTextDrawPathCallbacks |
| 2368 | |
| 2369 | /** |
| 2370 | * Text frame draw callback class that paints the text and text decoration parts |
| 2371 | * of an nsTextFrame using SVG painting properties, and selection backgrounds |
| 2372 | * and decorations as they would normally. |
| 2373 | * |
| 2374 | * An instance of this class is passed to nsTextFrame::PaintText if painting |
| 2375 | * cannot be done directly (e.g. if we are using an SVG pattern fill, stroking |
| 2376 | * the text, etc.). |
| 2377 | */ |
| 2378 | class SVGTextDrawPathCallbacks final : public nsTextFrame::DrawPathCallbacks { |
| 2379 | using imgDrawingParams = image::imgDrawingParams; |
| 2380 | |
| 2381 | public: |
| 2382 | /** |
| 2383 | * Constructs an SVGTextDrawPathCallbacks. |
| 2384 | * |
| 2385 | * @param aSVGTextFrame The ancestor text frame. |
| 2386 | * @param aContext The context to use for painting. |
| 2387 | * @param aFrame The nsTextFrame to paint. |
| 2388 | * @param aCanvasTM The transformation matrix to set when painting; this |
| 2389 | * should be the FOR_OUTERSVG_TM canvas TM of the text, so that |
| 2390 | * paint servers are painted correctly. |
| 2391 | * @param aImgParams Whether we need to synchronously decode images. |
| 2392 | * @param aShouldPaintSVGGlyphs Whether SVG glyphs should be painted. |
| 2393 | */ |
| 2394 | SVGTextDrawPathCallbacks(SVGTextFrame* aSVGTextFrame, gfxContext& aContext, |
| 2395 | nsTextFrame* aFrame, const gfxMatrix& aCanvasTM, |
| 2396 | imgDrawingParams& aImgParams, |
| 2397 | bool aShouldPaintSVGGlyphs) |
| 2398 | : DrawPathCallbacks(aShouldPaintSVGGlyphs), |
| 2399 | mSVGTextFrame(aSVGTextFrame), |
| 2400 | mContext(aContext), |
| 2401 | mFrame(aFrame), |
| 2402 | mCanvasTM(aCanvasTM), |
| 2403 | mImgParams(aImgParams) {} |
| 2404 | |
| 2405 | void NotifySelectionBackgroundNeedsFill(const Rect& aBackgroundRect, |
| 2406 | nscolor aColor, |
| 2407 | DrawTarget& aDrawTarget) override; |
| 2408 | void PaintDecorationLine(Rect aPath, bool aPaintingShadows, |
| 2409 | nscolor aColor) override; |
| 2410 | void PaintSelectionDecorationLine(Rect aPath, bool aPaintingShadows, |
| 2411 | nscolor aColor) override; |
| 2412 | void NotifyBeforeText(bool aPaintingShadows, nscolor aColor) override; |
| 2413 | void NotifyGlyphPathEmitted() override; |
| 2414 | void NotifyAfterText() override; |
| 2415 | |
| 2416 | private: |
| 2417 | void SetupContext(); |
| 2418 | |
| 2419 | bool IsClipPathChild() const { |
| 2420 | return mSVGTextFrame->HasAnyStateBits(NS_STATE_SVG_CLIPPATH_CHILD); |
| 2421 | } |
| 2422 | |
| 2423 | /** |
| 2424 | * Paints a piece of text geometry. This is called when glyphs |
| 2425 | * or text decorations have been emitted to the gfxContext. |
| 2426 | */ |
| 2427 | void HandleTextGeometry(); |
| 2428 | |
| 2429 | /** |
| 2430 | * Sets the gfxContext paint to the appropriate color or pattern |
| 2431 | * for filling text geometry. |
| 2432 | */ |
| 2433 | void MakeFillPattern(GeneralPattern* aOutPattern); |
| 2434 | |
| 2435 | /** |
| 2436 | * Fills and strokes a piece of text geometry, using group opacity |
| 2437 | * if the selection style requires it. |
| 2438 | */ |
| 2439 | void FillAndStrokeGeometry(); |
| 2440 | |
| 2441 | /** |
| 2442 | * Fills a piece of text geometry. |
| 2443 | */ |
| 2444 | void FillGeometry(); |
| 2445 | |
| 2446 | /** |
| 2447 | * Strokes a piece of text geometry. |
| 2448 | */ |
| 2449 | void StrokeGeometry(); |
| 2450 | |
| 2451 | /* |
| 2452 | * Takes a colour and modifies it to account for opacity properties. |
| 2453 | */ |
| 2454 | void ApplyOpacity(sRGBColor& aColor, const StyleSVGPaint& aPaint, |
| 2455 | const StyleSVGOpacity& aOpacity) const; |
| 2456 | |
| 2457 | SVGTextFrame* const mSVGTextFrame; |
| 2458 | gfxContext& mContext; |
| 2459 | nsTextFrame* const mFrame; |
| 2460 | const gfxMatrix& mCanvasTM; |
| 2461 | imgDrawingParams& mImgParams; |
| 2462 | |
| 2463 | /** |
| 2464 | * The color that we were last told from one of the path callback functions. |
| 2465 | * This color can be the special NS_SAME_AS_FOREGROUND_COLOR, |
| 2466 | * NS_40PERCENT_FOREGROUND_COLOR and NS_TRANSPARENT colors when we are |
| 2467 | * painting selections or IME decorations. |
| 2468 | */ |
| 2469 | nscolor mColor = NS_RGBA(0, 0, 0, 0)((nscolor)(((0) << 24) | ((0) << 16) | ((0) << 8) | (0))); |
| 2470 | |
| 2471 | /** |
| 2472 | * Whether we're painting text shadows. |
| 2473 | */ |
| 2474 | bool mPaintingShadows = false; |
| 2475 | }; |
| 2476 | |
| 2477 | void SVGTextDrawPathCallbacks::NotifySelectionBackgroundNeedsFill( |
| 2478 | const Rect& aBackgroundRect, nscolor aColor, DrawTarget& aDrawTarget) { |
| 2479 | if (IsClipPathChild()) { |
| 2480 | // Don't paint selection backgrounds when in a clip path. |
| 2481 | return; |
| 2482 | } |
| 2483 | |
| 2484 | mColor = aColor; // currently needed by MakeFillPattern |
| 2485 | mPaintingShadows = false; |
| 2486 | |
| 2487 | GeneralPattern fillPattern; |
| 2488 | MakeFillPattern(&fillPattern); |
| 2489 | if (fillPattern.GetPattern()) { |
| 2490 | DrawOptions drawOptions(aColor == NS_40PERCENT_FOREGROUND_COLOR ? 0.4 |
| 2491 | : 1.0); |
| 2492 | aDrawTarget.FillRect(aBackgroundRect, fillPattern, drawOptions); |
| 2493 | } |
| 2494 | } |
| 2495 | |
| 2496 | void SVGTextDrawPathCallbacks::NotifyBeforeText(bool aPaintingShadows, |
| 2497 | nscolor aColor) { |
| 2498 | mColor = aColor; |
| 2499 | mPaintingShadows = aPaintingShadows; |
| 2500 | SetupContext(); |
| 2501 | mContext.NewPath(); |
| 2502 | } |
| 2503 | |
| 2504 | void SVGTextDrawPathCallbacks::NotifyGlyphPathEmitted() { |
| 2505 | HandleTextGeometry(); |
| 2506 | mContext.NewPath(); |
| 2507 | } |
| 2508 | |
| 2509 | void SVGTextDrawPathCallbacks::NotifyAfterText() { mContext.Restore(); } |
| 2510 | |
| 2511 | void SVGTextDrawPathCallbacks::PaintDecorationLine(Rect aPath, |
| 2512 | bool aPaintingShadows, |
| 2513 | nscolor aColor) { |
| 2514 | mColor = aColor; |
| 2515 | mPaintingShadows = aPaintingShadows; |
| 2516 | AntialiasMode aaMode = |
| 2517 | SVGUtils::ToAntialiasMode(mFrame->StyleText()->mTextRendering); |
| 2518 | |
| 2519 | mContext.Save(); |
| 2520 | mContext.NewPath(); |
| 2521 | mContext.SetAntialiasMode(aaMode); |
| 2522 | mContext.Rectangle(ThebesRect(aPath)); |
| 2523 | HandleTextGeometry(); |
| 2524 | mContext.NewPath(); |
| 2525 | mContext.Restore(); |
| 2526 | } |
| 2527 | |
| 2528 | void SVGTextDrawPathCallbacks::PaintSelectionDecorationLine( |
| 2529 | Rect aPath, bool aPaintingShadows, nscolor aColor) { |
| 2530 | if (IsClipPathChild()) { |
| 2531 | // Don't paint selection decorations when in a clip path. |
| 2532 | return; |
| 2533 | } |
| 2534 | |
| 2535 | mColor = aColor; |
| 2536 | mPaintingShadows = aPaintingShadows; |
| 2537 | |
| 2538 | mContext.Save(); |
| 2539 | mContext.NewPath(); |
| 2540 | mContext.Rectangle(ThebesRect(aPath)); |
| 2541 | FillAndStrokeGeometry(); |
| 2542 | mContext.Restore(); |
| 2543 | } |
| 2544 | |
| 2545 | void SVGTextDrawPathCallbacks::SetupContext() { |
| 2546 | mContext.Save(); |
| 2547 | |
| 2548 | // XXX This is copied from nsSVGGlyphFrame::Render, but cairo doesn't actually |
| 2549 | // seem to do anything with the antialias mode. So we can perhaps remove it, |
| 2550 | // or make SetAntialiasMode set cairo text antialiasing too. |
| 2551 | mContext.SetAntialiasMode( |
| 2552 | SVGUtils::ToAntialiasMode(mFrame->StyleText()->mTextRendering)); |
| 2553 | } |
| 2554 | |
| 2555 | void SVGTextDrawPathCallbacks::HandleTextGeometry() { |
| 2556 | if (IsClipPathChild()) { |
| 2557 | RefPtr<Path> path = mContext.GetPath(); |
| 2558 | ColorPattern white( |
| 2559 | DeviceColor(1.f, 1.f, 1.f, 1.f)); // for masking, so no ToDeviceColor |
| 2560 | mContext.GetDrawTarget()->Fill(path, white); |
| 2561 | } else { |
| 2562 | // Normal painting. |
| 2563 | gfxContextMatrixAutoSaveRestore saveMatrix(&mContext); |
| 2564 | mContext.SetMatrixDouble(mCanvasTM); |
| 2565 | |
| 2566 | FillAndStrokeGeometry(); |
| 2567 | } |
| 2568 | } |
| 2569 | |
| 2570 | void SVGTextDrawPathCallbacks::ApplyOpacity( |
| 2571 | sRGBColor& aColor, const StyleSVGPaint& aPaint, |
| 2572 | const StyleSVGOpacity& aOpacity) const { |
| 2573 | if (aPaint.kind.tag == StyleSVGPaintKind::Tag::Color) { |
| 2574 | aColor.a *= |
| 2575 | sRGBColor::FromABGR(aPaint.kind.AsColor().CalcColor(*mFrame->Style())) |
| 2576 | .a; |
| 2577 | } |
| 2578 | aColor.a *= SVGUtils::GetOpacity(aOpacity, /*aContextPaint*/ nullptr); |
| 2579 | } |
| 2580 | |
| 2581 | void SVGTextDrawPathCallbacks::MakeFillPattern(GeneralPattern* aOutPattern) { |
| 2582 | if (mColor == NS_SAME_AS_FOREGROUND_COLOR || |
| 2583 | mColor == NS_40PERCENT_FOREGROUND_COLOR) { |
| 2584 | SVGUtils::MakeFillPatternFor(mFrame, &mContext, aOutPattern, mImgParams); |
| 2585 | return; |
| 2586 | } |
| 2587 | |
| 2588 | if (mColor == NS_TRANSPARENT) { |
| 2589 | return; |
| 2590 | } |
| 2591 | |
| 2592 | sRGBColor color(sRGBColor::FromABGR(mColor)); |
| 2593 | if (mPaintingShadows) { |
| 2594 | ApplyOpacity(color, mFrame->StyleSVG()->mFill, |
| 2595 | mFrame->StyleSVG()->mFillOpacity); |
| 2596 | } |
| 2597 | aOutPattern->InitColorPattern(ToDeviceColor(color)); |
| 2598 | } |
| 2599 | |
| 2600 | void SVGTextDrawPathCallbacks::FillAndStrokeGeometry() { |
| 2601 | gfxGroupForBlendAutoSaveRestore autoGroupForBlend(&mContext); |
| 2602 | if (mColor == NS_40PERCENT_FOREGROUND_COLOR) { |
| 2603 | autoGroupForBlend.PushGroupForBlendBack(gfxContentType::COLOR_ALPHA, 0.4f); |
| 2604 | } |
| 2605 | |
| 2606 | uint32_t paintOrder = mFrame->StyleSVG()->mPaintOrder; |
| 2607 | if (!paintOrder) { |
| 2608 | FillGeometry(); |
| 2609 | StrokeGeometry(); |
| 2610 | } else { |
| 2611 | while (paintOrder) { |
| 2612 | auto component = StylePaintOrder(paintOrder & kPaintOrderMask); |
| 2613 | switch (component) { |
| 2614 | case StylePaintOrder::Fill: |
| 2615 | FillGeometry(); |
| 2616 | break; |
| 2617 | case StylePaintOrder::Stroke: |
| 2618 | StrokeGeometry(); |
| 2619 | break; |
| 2620 | default: |
| 2621 | MOZ_FALLTHROUGH_ASSERT("Unknown paint-order value")do { do { } while (false); MOZ_ReportCrash("" "MOZ_FALLTHROUGH_ASSERT: " "Unknown paint-order value", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2621); AnnotateMozCrashReason("MOZ_CRASH(" "MOZ_FALLTHROUGH_ASSERT: " "Unknown paint-order value" ")"); do { *((volatile int*)__null ) = 2621; __attribute__((nomerge)) ::abort(); } while (false) ; } while (false); |
| 2622 | case StylePaintOrder::Markers: |
| 2623 | case StylePaintOrder::Normal: |
| 2624 | break; |
| 2625 | } |
| 2626 | paintOrder >>= kPaintOrderShift; |
| 2627 | } |
| 2628 | } |
| 2629 | } |
| 2630 | |
| 2631 | void SVGTextDrawPathCallbacks::FillGeometry() { |
| 2632 | if (mFrame->StyleSVG()->mFill.kind.IsNone()) { |
| 2633 | return; |
| 2634 | } |
| 2635 | GeneralPattern fillPattern; |
| 2636 | MakeFillPattern(&fillPattern); |
| 2637 | if (fillPattern.GetPattern()) { |
| 2638 | RefPtr<Path> path = mContext.GetPath(); |
| 2639 | FillRule fillRule = SVGUtils::ToFillRule(mFrame->StyleSVG()->mFillRule); |
| 2640 | if (fillRule != path->GetFillRule()) { |
| 2641 | RefPtr<PathBuilder> builder = path->CopyToBuilder(fillRule); |
| 2642 | path = builder->Finish(); |
| 2643 | } |
| 2644 | mContext.GetDrawTarget()->Fill(path, fillPattern); |
| 2645 | } |
| 2646 | } |
| 2647 | |
| 2648 | void SVGTextDrawPathCallbacks::StrokeGeometry() { |
| 2649 | // We don't paint the stroke when we are filling with a selection color. |
| 2650 | if (!(mColor == NS_SAME_AS_FOREGROUND_COLOR || |
| 2651 | mColor == NS_40PERCENT_FOREGROUND_COLOR || mPaintingShadows)) { |
| 2652 | return; |
| 2653 | } |
| 2654 | |
| 2655 | if (!SVGUtils::HasStroke(mFrame, /*aContextPaint*/ nullptr)) { |
| 2656 | return; |
| 2657 | } |
| 2658 | |
| 2659 | GeneralPattern strokePattern; |
| 2660 | if (mPaintingShadows) { |
| 2661 | sRGBColor color(sRGBColor::FromABGR(mColor)); |
| 2662 | ApplyOpacity(color, mFrame->StyleSVG()->mStroke, |
| 2663 | mFrame->StyleSVG()->mStrokeOpacity); |
| 2664 | strokePattern.InitColorPattern(ToDeviceColor(color)); |
| 2665 | } else { |
| 2666 | SVGUtils::MakeStrokePatternFor(mFrame, &mContext, &strokePattern, |
| 2667 | mImgParams, /*aContextPaint*/ nullptr); |
| 2668 | } |
| 2669 | if (strokePattern.GetPattern()) { |
| 2670 | SVGElement* svgOwner = |
| 2671 | SVGElement::FromNode(mFrame->GetParent()->GetContent()); |
| 2672 | |
| 2673 | // Apply any stroke-specific transform |
| 2674 | gfxMatrix outerSVGToUser; |
| 2675 | if (SVGUtils::GetNonScalingStrokeTransform(mFrame, &outerSVGToUser) && |
| 2676 | outerSVGToUser.Invert()) { |
| 2677 | mContext.Multiply(outerSVGToUser); |
| 2678 | } |
| 2679 | |
| 2680 | RefPtr<Path> path = mContext.GetPath(); |
| 2681 | SVGContentUtils::AutoStrokeOptions strokeOptions; |
| 2682 | SVGContentUtils::GetStrokeOptions(&strokeOptions, svgOwner, mFrame->Style(), |
| 2683 | /*aContextPaint*/ nullptr); |
| 2684 | DrawOptions drawOptions; |
| 2685 | drawOptions.mAntialiasMode = |
| 2686 | SVGUtils::ToAntialiasMode(mFrame->StyleText()->mTextRendering); |
| 2687 | mContext.GetDrawTarget()->Stroke(path, strokePattern, strokeOptions); |
| 2688 | } |
| 2689 | } |
| 2690 | |
| 2691 | // ============================================================================ |
| 2692 | // SVGTextFrame |
| 2693 | |
| 2694 | // ---------------------------------------------------------------------------- |
| 2695 | // Display list item |
| 2696 | |
| 2697 | class DisplaySVGText final : public DisplaySVGItem { |
| 2698 | public: |
| 2699 | DisplaySVGText(nsDisplayListBuilder* aBuilder, SVGTextFrame* aFrame) |
| 2700 | : DisplaySVGItem(aBuilder, aFrame) { |
| 2701 | MOZ_COUNT_CTOR(DisplaySVGText)do { static_assert(std::is_class_v<DisplaySVGText>, "Token '" "DisplaySVGText" "' is not a class type."); static_assert(!std ::is_base_of<nsISupports, DisplaySVGText>::value, "nsISupports classes don't need to call MOZ_COUNT_CTOR or " "MOZ_COUNT_DTOR");; NS_LogCtor((void*)this, "DisplaySVGText" , sizeof(*this)); } while (0); |
| 2702 | } |
| 2703 | |
| 2704 | MOZ_COUNTED_DTOR_OVERRIDE(DisplaySVGText)~DisplaySVGText() override { do { static_assert(std::is_class_v <DisplaySVGText>, "Token '" "DisplaySVGText" "' is not a class type." ); static_assert(!std::is_base_of<nsISupports, DisplaySVGText >::value, "nsISupports classes don't need to call MOZ_COUNT_CTOR or " "MOZ_COUNT_DTOR");; NS_LogDtor((void*)this, "DisplaySVGText" , sizeof(*this)); } while (0); } |
| 2705 | |
| 2706 | NS_DISPLAY_DECL_NAME("DisplaySVGText", TYPE_SVG_TEXT)const char* Name() const override { return "DisplaySVGText"; } constexpr static DisplayItemType ItemType() { return DisplayItemType ::TYPE_SVG_TEXT; } private: void* operator new(size_t aSize, nsDisplayListBuilder * aBuilder) { return aBuilder->Allocate(aSize, DisplayItemType ::TYPE_SVG_TEXT); } template <typename T, typename F, typename ... Args> friend T* mozilla::MakeDisplayItemWithIndex( nsDisplayListBuilder * aBuilder, F* aFrame, const uint16_t aIndex, Args&&... aArgs); public: |
| 2707 | |
| 2708 | nsDisplayItemGeometry* AllocateGeometry( |
| 2709 | nsDisplayListBuilder* aBuilder) override { |
| 2710 | return new nsDisplayItemGenericGeometry(this, aBuilder); |
| 2711 | } |
| 2712 | |
| 2713 | nsRect GetComponentAlphaBounds( |
| 2714 | nsDisplayListBuilder* aBuilder) const override { |
| 2715 | bool snap; |
| 2716 | return GetBounds(aBuilder, &snap); |
| 2717 | } |
| 2718 | }; |
| 2719 | |
| 2720 | // --------------------------------------------------------------------- |
| 2721 | // nsQueryFrame methods |
| 2722 | |
| 2723 | NS_QUERYFRAME_HEAD(SVGTextFrame)void* SVGTextFrame ::QueryFrame(FrameIID id) const { switch ( id) { |
| 2724 | NS_QUERYFRAME_ENTRY(SVGTextFrame)case SVGTextFrame ::kFrameIID: { static_assert( std::is_same_v <SVGTextFrame, SVGTextFrame ::Has_NS_DECL_QUERYFRAME_TARGET >, "SVGTextFrame" " must declare itself as a queryframe target" ); return const_cast<SVGTextFrame*>(static_cast<const SVGTextFrame*>(this)); } |
| 2725 | NS_QUERYFRAME_TAIL_INHERITING(SVGDisplayContainerFrame)default: break; } return SVGDisplayContainerFrame ::QueryFrame (id); } |
| 2726 | |
| 2727 | } // namespace mozilla |
| 2728 | |
| 2729 | // --------------------------------------------------------------------- |
| 2730 | // Implementation |
| 2731 | |
| 2732 | nsIFrame* NS_NewSVGTextFrame(mozilla::PresShell* aPresShell, |
| 2733 | mozilla::ComputedStyle* aStyle) { |
| 2734 | return new (aPresShell) |
| 2735 | mozilla::SVGTextFrame(aStyle, aPresShell->GetPresContext()); |
| 2736 | } |
| 2737 | |
| 2738 | namespace mozilla { |
| 2739 | |
| 2740 | NS_IMPL_FRAMEARENA_HELPERS(SVGTextFrame)void* SVGTextFrame ::operator new(size_t sz, mozilla::PresShell * aShell) { return aShell->AllocateFrame(nsQueryFrame::SVGTextFrame_id , sz); } |
| 2741 | |
| 2742 | // --------------------------------------------------------------------- |
| 2743 | // nsIFrame methods |
| 2744 | |
| 2745 | void SVGTextFrame::Init(nsIContent* aContent, nsContainerFrame* aParent, |
| 2746 | nsIFrame* aPrevInFlow) { |
| 2747 | NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::text),do { if (!(aContent->IsSVGElement(nsGkAtoms::text))) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Content is not an SVG text", "aContent->IsSVGElement(nsGkAtoms::text)" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2748); MOZ_PretendNoReturn(); } } while (0) |
| 2748 | "Content is not an SVG text")do { if (!(aContent->IsSVGElement(nsGkAtoms::text))) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Content is not an SVG text", "aContent->IsSVGElement(nsGkAtoms::text)" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2748); MOZ_PretendNoReturn(); } } while (0); |
| 2749 | |
| 2750 | SVGDisplayContainerFrame::Init(aContent, aParent, aPrevInFlow); |
| 2751 | AddStateBits(aParent->GetStateBits() & NS_STATE_SVG_CLIPPATH_CHILD); |
| 2752 | |
| 2753 | mMutationObserver = new MutationObserver(this); |
| 2754 | |
| 2755 | if (HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 2756 | // We're inserting a new <text> element into a non-display context. |
| 2757 | // Ensure that we get reflowed. |
| 2758 | ScheduleReflowSVGNonDisplayText( |
| 2759 | IntrinsicDirty::FrameAncestorsAndDescendants); |
| 2760 | } |
| 2761 | } |
| 2762 | |
| 2763 | void SVGTextFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder, |
| 2764 | const nsDisplayListSet& aLists) { |
| 2765 | if (IsSubtreeDirty()) { |
| 2766 | // We can sometimes be asked to paint before reflow happens and we |
| 2767 | // have updated mPositions, etc. In this case, we just avoid |
| 2768 | // painting. |
| 2769 | return; |
| 2770 | } |
| 2771 | if (!IsVisibleForPainting() && aBuilder->IsForPainting()) { |
| 2772 | return; |
| 2773 | } |
| 2774 | DisplayOutline(aBuilder, aLists); |
| 2775 | aLists.Content()->AppendNewToTop<DisplaySVGText>(aBuilder, this); |
| 2776 | } |
| 2777 | |
| 2778 | nsresult SVGTextFrame::AttributeChanged(int32_t aNameSpaceID, |
| 2779 | nsAtom* aAttribute, int32_t aModType) { |
| 2780 | if (aNameSpaceID != kNameSpaceID_None) { |
| 2781 | return NS_OK; |
| 2782 | } |
| 2783 | |
| 2784 | if (aAttribute == nsGkAtoms::transform) { |
| 2785 | // We don't invalidate for transform changes (the layers code does that). |
| 2786 | // Also note that SVGTransformableElement::GetAttributeChangeHint will |
| 2787 | // return nsChangeHint_UpdateOverflow for "transform" attribute changes |
| 2788 | // and cause DoApplyRenderingChangeToTree to make the SchedulePaint call. |
| 2789 | |
| 2790 | if (!HasAnyStateBits(NS_FRAME_FIRST_REFLOW) && mCanvasTM && |
| 2791 | mCanvasTM->IsSingular()) { |
| 2792 | // We won't have calculated the glyph positions correctly. |
| 2793 | NotifyGlyphMetricsChange(false); |
| 2794 | } |
| 2795 | mCanvasTM = nullptr; |
| 2796 | } else if (IsGlyphPositioningAttribute(aAttribute) || |
| 2797 | aAttribute == nsGkAtoms::textLength || |
| 2798 | aAttribute == nsGkAtoms::lengthAdjust) { |
| 2799 | NotifyGlyphMetricsChange(false); |
| 2800 | } |
| 2801 | |
| 2802 | return NS_OK; |
| 2803 | } |
| 2804 | |
| 2805 | void SVGTextFrame::ReflowSVGNonDisplayText() { |
| 2806 | MOZ_ASSERT(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this),do { static_assert( mozilla::detail::AssertionConditionType< decltype(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" " (" "only call ReflowSVGNonDisplayText when an outer SVG frame is " "under ReflowSVG" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2808); AnnotateMozCrashReason("MOZ_ASSERT" "(" "SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" ") (" "only call ReflowSVGNonDisplayText when an outer SVG frame is " "under ReflowSVG" ")"); do { *((volatile int*)__null) = 2808 ; __attribute__((nomerge)) ::abort(); } while (false); } } while (false) |
| 2807 | "only call ReflowSVGNonDisplayText when an outer SVG frame is "do { static_assert( mozilla::detail::AssertionConditionType< decltype(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" " (" "only call ReflowSVGNonDisplayText when an outer SVG frame is " "under ReflowSVG" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2808); AnnotateMozCrashReason("MOZ_ASSERT" "(" "SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" ") (" "only call ReflowSVGNonDisplayText when an outer SVG frame is " "under ReflowSVG" ")"); do { *((volatile int*)__null) = 2808 ; __attribute__((nomerge)) ::abort(); } while (false); } } while (false) |
| 2808 | "under ReflowSVG")do { static_assert( mozilla::detail::AssertionConditionType< decltype(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" " (" "only call ReflowSVGNonDisplayText when an outer SVG frame is " "under ReflowSVG" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2808); AnnotateMozCrashReason("MOZ_ASSERT" "(" "SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" ") (" "only call ReflowSVGNonDisplayText when an outer SVG frame is " "under ReflowSVG" ")"); do { *((volatile int*)__null) = 2808 ; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 2809 | MOZ_ASSERT(HasAnyStateBits(NS_FRAME_IS_NONDISPLAY),do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasAnyStateBits(NS_FRAME_IS_NONDISPLAY))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)" " (" "only call ReflowSVGNonDisplayText if the frame is " "NS_FRAME_IS_NONDISPLAY" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2811); AnnotateMozCrashReason("MOZ_ASSERT" "(" "HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)" ") (" "only call ReflowSVGNonDisplayText if the frame is " "NS_FRAME_IS_NONDISPLAY" ")"); do { *((volatile int*)__null) = 2811; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2810 | "only call ReflowSVGNonDisplayText if the frame is "do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasAnyStateBits(NS_FRAME_IS_NONDISPLAY))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)" " (" "only call ReflowSVGNonDisplayText if the frame is " "NS_FRAME_IS_NONDISPLAY" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2811); AnnotateMozCrashReason("MOZ_ASSERT" "(" "HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)" ") (" "only call ReflowSVGNonDisplayText if the frame is " "NS_FRAME_IS_NONDISPLAY" ")"); do { *((volatile int*)__null) = 2811; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2811 | "NS_FRAME_IS_NONDISPLAY")do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasAnyStateBits(NS_FRAME_IS_NONDISPLAY))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)" " (" "only call ReflowSVGNonDisplayText if the frame is " "NS_FRAME_IS_NONDISPLAY" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2811); AnnotateMozCrashReason("MOZ_ASSERT" "(" "HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)" ") (" "only call ReflowSVGNonDisplayText if the frame is " "NS_FRAME_IS_NONDISPLAY" ")"); do { *((volatile int*)__null) = 2811; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2812 | |
| 2813 | // We had a style change, so we mark this frame as dirty so that the next |
| 2814 | // time it is painted, we reflow the anonymous block frame. |
| 2815 | this->MarkSubtreeDirty(); |
| 2816 | |
| 2817 | // Finally, we need to actually reflow the anonymous block frame and update |
| 2818 | // mPositions, in case we are being reflowed immediately after a DOM |
| 2819 | // mutation that needs frame reconstruction. |
| 2820 | MaybeReflowAnonymousBlockChild(); |
| 2821 | UpdateGlyphPositioning(); |
| 2822 | } |
| 2823 | |
| 2824 | void SVGTextFrame::ScheduleReflowSVGNonDisplayText(IntrinsicDirty aReason) { |
| 2825 | MOZ_ASSERT(!SVGUtils::OuterSVGIsCallingReflowSVG(this),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!SVGUtils::OuterSVGIsCallingReflowSVG(this))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!SVGUtils::OuterSVGIsCallingReflowSVG(this)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!SVGUtils::OuterSVGIsCallingReflowSVG(this)" " (" "do not call ScheduleReflowSVGNonDisplayText when the outer SVG " "frame is under ReflowSVG" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2827); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!SVGUtils::OuterSVGIsCallingReflowSVG(this)" ") (" "do not call ScheduleReflowSVGNonDisplayText when the outer SVG " "frame is under ReflowSVG" ")"); do { *((volatile int*)__null ) = 2827; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 2826 | "do not call ScheduleReflowSVGNonDisplayText when the outer SVG "do { static_assert( mozilla::detail::AssertionConditionType< decltype(!SVGUtils::OuterSVGIsCallingReflowSVG(this))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!SVGUtils::OuterSVGIsCallingReflowSVG(this)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!SVGUtils::OuterSVGIsCallingReflowSVG(this)" " (" "do not call ScheduleReflowSVGNonDisplayText when the outer SVG " "frame is under ReflowSVG" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2827); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!SVGUtils::OuterSVGIsCallingReflowSVG(this)" ") (" "do not call ScheduleReflowSVGNonDisplayText when the outer SVG " "frame is under ReflowSVG" ")"); do { *((volatile int*)__null ) = 2827; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 2827 | "frame is under ReflowSVG")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!SVGUtils::OuterSVGIsCallingReflowSVG(this))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!SVGUtils::OuterSVGIsCallingReflowSVG(this)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!SVGUtils::OuterSVGIsCallingReflowSVG(this)" " (" "do not call ScheduleReflowSVGNonDisplayText when the outer SVG " "frame is under ReflowSVG" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2827); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!SVGUtils::OuterSVGIsCallingReflowSVG(this)" ") (" "do not call ScheduleReflowSVGNonDisplayText when the outer SVG " "frame is under ReflowSVG" ")"); do { *((volatile int*)__null ) = 2827; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); |
| 2828 | MOZ_ASSERT(!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)" " (" "do not call ScheduleReflowSVGNonDisplayText while reflowing the " "anonymous block child" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2830); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)" ") (" "do not call ScheduleReflowSVGNonDisplayText while reflowing the " "anonymous block child" ")"); do { *((volatile int*)__null) = 2830; __attribute__((nomerge)) ::abort(); } while (false); } } while (false) |
| 2829 | "do not call ScheduleReflowSVGNonDisplayText while reflowing the "do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)" " (" "do not call ScheduleReflowSVGNonDisplayText while reflowing the " "anonymous block child" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2830); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)" ") (" "do not call ScheduleReflowSVGNonDisplayText while reflowing the " "anonymous block child" ")"); do { *((volatile int*)__null) = 2830; __attribute__((nomerge)) ::abort(); } while (false); } } while (false) |
| 2830 | "anonymous block child")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)" " (" "do not call ScheduleReflowSVGNonDisplayText while reflowing the " "anonymous block child" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2830); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)" ") (" "do not call ScheduleReflowSVGNonDisplayText while reflowing the " "anonymous block child" ")"); do { *((volatile int*)__null) = 2830; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 2831 | |
| 2832 | // We need to find an ancestor frame that we can call FrameNeedsReflow |
| 2833 | // on that will cause the document to be marked as needing relayout, |
| 2834 | // and for that ancestor (or some further ancestor) to be marked as |
| 2835 | // a root to reflow. We choose the closest ancestor frame that is not |
| 2836 | // NS_FRAME_IS_NONDISPLAY and which is either an outer SVG frame or a |
| 2837 | // non-SVG frame. (We don't consider displayed SVG frame ancestors other |
| 2838 | // than SVGOuterSVGFrame, since calling FrameNeedsReflow on those other |
| 2839 | // SVG frames would do a bunch of unnecessary work on the SVG frames up to |
| 2840 | // the SVGOuterSVGFrame.) |
| 2841 | |
| 2842 | nsIFrame* f = this; |
| 2843 | while (f) { |
| 2844 | if (!f->HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 2845 | if (f->IsSubtreeDirty()) { |
| 2846 | // This is a displayed frame, so if it is already dirty, we will be |
| 2847 | // reflowed soon anyway. No need to call FrameNeedsReflow again, then. |
| 2848 | return; |
| 2849 | } |
| 2850 | if (!f->HasAnyStateBits(NS_FRAME_SVG_LAYOUT)) { |
| 2851 | break; |
| 2852 | } |
| 2853 | f->AddStateBits(NS_FRAME_HAS_DIRTY_CHILDREN); |
| 2854 | } |
| 2855 | f = f->GetParent(); |
| 2856 | } |
| 2857 | |
| 2858 | MOZ_ASSERT(f, "should have found an ancestor frame to reflow")do { static_assert( mozilla::detail::AssertionConditionType< decltype(f)>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(f))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("f" " (" "should have found an ancestor frame to reflow" ")" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2858); AnnotateMozCrashReason("MOZ_ASSERT" "(" "f" ") (" "should have found an ancestor frame to reflow" ")"); do { *((volatile int*)__null) = 2858; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2859 | |
| 2860 | PresShell()->FrameNeedsReflow(f, aReason, NS_FRAME_IS_DIRTY); |
| 2861 | } |
| 2862 | |
| 2863 | NS_IMPL_ISUPPORTS(SVGTextFrame::MutationObserver, nsIMutationObserver)MozExternalRefCountType SVGTextFrame::MutationObserver::AddRef (void) { static_assert(!std::is_destructible_v<SVGTextFrame ::MutationObserver>, "Reference-counted class " "SVGTextFrame::MutationObserver" " should not have a public destructor. " "Make this class's destructor non-public" ); do { static_assert( mozilla::detail::AssertionConditionType <decltype(int32_t(mRefCnt) >= 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) >= 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) >= 0" " (" "illegal refcnt" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2863); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) >= 0" ") (" "illegal refcnt" ")"); do { *((volatile int*)__null) = 2863; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); do { static_assert( mozilla::detail::AssertionConditionType <decltype("SVGTextFrame::MutationObserver" != nullptr)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!("SVGTextFrame::MutationObserver" != nullptr))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("\"SVGTextFrame::MutationObserver\" != nullptr" " (" "Must specify a name" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2863); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"SVGTextFrame::MutationObserver\" != nullptr" ") (" "Must specify a name" ")"); do { *((volatile int*)__null ) = 2863; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread .AssertOwnership("SVGTextFrame::MutationObserver" " not thread-safe" ); nsrefcnt count = ++mRefCnt; NS_LogAddRef((this), (count), ( "SVGTextFrame::MutationObserver"), (uint32_t)(sizeof(*this))) ; return count; } MozExternalRefCountType SVGTextFrame::MutationObserver ::Release(void) { do { static_assert( mozilla::detail::AssertionConditionType <decltype(int32_t(mRefCnt) > 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) > 0))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) > 0" " (" "dup release" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2863); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) > 0" ") (" "dup release" ")"); do { *((volatile int*)__null) = 2863 ; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); do { static_assert( mozilla::detail::AssertionConditionType <decltype("SVGTextFrame::MutationObserver" != nullptr)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!("SVGTextFrame::MutationObserver" != nullptr))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("\"SVGTextFrame::MutationObserver\" != nullptr" " (" "Must specify a name" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2863); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"SVGTextFrame::MutationObserver\" != nullptr" ") (" "Must specify a name" ")"); do { *((volatile int*)__null ) = 2863; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread .AssertOwnership("SVGTextFrame::MutationObserver" " not thread-safe" ); const char* const nametmp = "SVGTextFrame::MutationObserver" ; nsrefcnt count = --mRefCnt; NS_LogRelease((this), (count), ( nametmp)); if (count == 0) { mRefCnt = 1; delete (this); return 0; } return count; } nsresult SVGTextFrame::MutationObserver ::QueryInterface(const nsIID& aIID, void** aInstancePtr) { do { if (!(aInstancePtr)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "QueryInterface requires a non-NULL destination!", "aInstancePtr" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2863); MOZ_PretendNoReturn(); } } while (0); nsresult rv = NS_ERROR_FAILURE ; static_assert(1 > 0, "Need more arguments to NS_INTERFACE_TABLE" ); static const QITableEntry table[] = { {&mozilla::detail ::kImplementedIID<SVGTextFrame::MutationObserver, nsIMutationObserver >, int32_t( reinterpret_cast<char*>(static_cast<nsIMutationObserver *>((SVGTextFrame::MutationObserver*)0x1000)) - reinterpret_cast <char*>((SVGTextFrame::MutationObserver*)0x1000))}, {& mozilla::detail::kImplementedIID<SVGTextFrame::MutationObserver , nsISupports>, int32_t(reinterpret_cast<char*>(static_cast <nsISupports*>( static_cast<nsIMutationObserver*> ((SVGTextFrame::MutationObserver*)0x1000))) - reinterpret_cast <char*>((SVGTextFrame::MutationObserver*)0x1000))}, { nullptr , 0 } } ; static_assert((sizeof(table) / sizeof(table[0])) > 1, "need at least 1 interface"); rv = NS_TableDrivenQI(static_cast <void*>(this), aIID, aInstancePtr, table); return rv; } |
| 2864 | |
| 2865 | void SVGTextFrame::MutationObserver::ContentAppended( |
| 2866 | nsIContent* aFirstNewContent) { |
| 2867 | mFrame->NotifyGlyphMetricsChange(true); |
| 2868 | } |
| 2869 | |
| 2870 | void SVGTextFrame::MutationObserver::ContentInserted(nsIContent* aChild) { |
| 2871 | mFrame->NotifyGlyphMetricsChange(true); |
| 2872 | } |
| 2873 | |
| 2874 | void SVGTextFrame::MutationObserver::ContentRemoved( |
| 2875 | nsIContent* aChild, nsIContent* aPreviousSibling) { |
| 2876 | mFrame->NotifyGlyphMetricsChange(true); |
| 2877 | } |
| 2878 | |
| 2879 | void SVGTextFrame::MutationObserver::CharacterDataChanged( |
| 2880 | nsIContent* aContent, const CharacterDataChangeInfo&) { |
| 2881 | mFrame->NotifyGlyphMetricsChange(true); |
| 2882 | } |
| 2883 | |
| 2884 | void SVGTextFrame::MutationObserver::AttributeChanged( |
| 2885 | Element* aElement, int32_t aNameSpaceID, nsAtom* aAttribute, |
| 2886 | int32_t aModType, const nsAttrValue* aOldValue) { |
| 2887 | if (!aElement->IsSVGElement()) { |
| 2888 | return; |
| 2889 | } |
| 2890 | |
| 2891 | // Attribute changes on this element will be handled by |
| 2892 | // SVGTextFrame::AttributeChanged. |
| 2893 | if (aElement == mFrame->GetContent()) { |
| 2894 | return; |
| 2895 | } |
| 2896 | |
| 2897 | mFrame->HandleAttributeChangeInDescendant(aElement, aNameSpaceID, aAttribute); |
| 2898 | } |
| 2899 | |
| 2900 | void SVGTextFrame::HandleAttributeChangeInDescendant(Element* aElement, |
| 2901 | int32_t aNameSpaceID, |
| 2902 | nsAtom* aAttribute) { |
| 2903 | if (aElement->IsSVGElement(nsGkAtoms::textPath)) { |
| 2904 | if (aNameSpaceID == kNameSpaceID_None && |
| 2905 | (aAttribute == nsGkAtoms::startOffset || |
| 2906 | aAttribute == nsGkAtoms::path || aAttribute == nsGkAtoms::side_)) { |
| 2907 | NotifyGlyphMetricsChange(false); |
| 2908 | } else if ((aNameSpaceID == kNameSpaceID_XLink4 || |
| 2909 | aNameSpaceID == kNameSpaceID_None) && |
| 2910 | aAttribute == nsGkAtoms::href) { |
| 2911 | // Blow away our reference, if any |
| 2912 | nsIFrame* childElementFrame = aElement->GetPrimaryFrame(); |
| 2913 | if (childElementFrame) { |
| 2914 | SVGObserverUtils::RemoveTextPathObserver(childElementFrame); |
| 2915 | NotifyGlyphMetricsChange(false); |
| 2916 | } |
| 2917 | } |
| 2918 | } else { |
| 2919 | if (aNameSpaceID == kNameSpaceID_None && |
| 2920 | IsGlyphPositioningAttribute(aAttribute)) { |
| 2921 | NotifyGlyphMetricsChange(false); |
| 2922 | } |
| 2923 | } |
| 2924 | } |
| 2925 | |
| 2926 | void SVGTextFrame::FindCloserFrameForSelection( |
| 2927 | const nsPoint& aPoint, FrameWithDistance* aCurrentBestFrame) { |
| 2928 | if (HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 2929 | return; |
| 2930 | } |
| 2931 | |
| 2932 | UpdateGlyphPositioning(); |
| 2933 | |
| 2934 | nsPresContext* presContext = PresContext(); |
| 2935 | |
| 2936 | // Find the frame that has the closest rendered run rect to aPoint. |
| 2937 | TextRenderedRunIterator it(this); |
| 2938 | for (TextRenderedRun run = it.Current(); run.mFrame; run = it.Next()) { |
| 2939 | uint32_t flags = TextRenderedRun::eIncludeFill | |
| 2940 | TextRenderedRun::eIncludeStroke | |
| 2941 | TextRenderedRun::eNoHorizontalOverflow; |
| 2942 | SVGBBox userRect = run.GetUserSpaceRect(presContext, flags); |
| 2943 | float devPxPerCSSPx = presContext->CSSPixelsToDevPixels(1.f); |
| 2944 | userRect.Scale(devPxPerCSSPx); |
| 2945 | |
| 2946 | if (!userRect.IsEmpty()) { |
| 2947 | gfxMatrix m; |
| 2948 | nsRect rect = |
| 2949 | SVGUtils::ToCanvasBounds(userRect.ToThebesRect(), m, presContext); |
| 2950 | |
| 2951 | if (nsLayoutUtils::PointIsCloserToRect(aPoint, rect, |
| 2952 | aCurrentBestFrame->mXDistance, |
| 2953 | aCurrentBestFrame->mYDistance)) { |
| 2954 | aCurrentBestFrame->mFrame = run.mFrame; |
| 2955 | } |
| 2956 | } |
| 2957 | } |
| 2958 | } |
| 2959 | |
| 2960 | //---------------------------------------------------------------------- |
| 2961 | // ISVGDisplayableFrame methods |
| 2962 | |
| 2963 | void SVGTextFrame::NotifySVGChanged(uint32_t aFlags) { |
| 2964 | MOZ_ASSERT(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED),do { static_assert( mozilla::detail::AssertionConditionType< decltype(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED)" " (" "Invalidation logic may need adjusting" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2965); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED)" ") (" "Invalidation logic may need adjusting" ")"); do { *(( volatile int*)__null) = 2965; __attribute__((nomerge)) ::abort (); } while (false); } } while (false) |
| 2965 | "Invalidation logic may need adjusting")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED)" " (" "Invalidation logic may need adjusting" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 2965); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED)" ") (" "Invalidation logic may need adjusting" ")"); do { *(( volatile int*)__null) = 2965; __attribute__((nomerge)) ::abort (); } while (false); } } while (false); |
| 2966 | |
| 2967 | bool needNewBounds = false; |
| 2968 | bool needGlyphMetricsUpdate = false; |
| 2969 | bool needNewCanvasTM = false; |
| 2970 | |
| 2971 | if ((aFlags & COORD_CONTEXT_CHANGED) && |
| 2972 | HasAnyStateBits(NS_STATE_SVG_POSITIONING_MAY_USE_PERCENTAGES)) { |
| 2973 | needGlyphMetricsUpdate = true; |
| 2974 | } |
| 2975 | |
| 2976 | if (aFlags & TRANSFORM_CHANGED) { |
| 2977 | needNewCanvasTM = true; |
| 2978 | if (mCanvasTM && mCanvasTM->IsSingular()) { |
| 2979 | // We won't have calculated the glyph positions correctly. |
| 2980 | needNewBounds = true; |
| 2981 | needGlyphMetricsUpdate = true; |
| 2982 | } |
| 2983 | if (StyleSVGReset()->HasNonScalingStroke()) { |
| 2984 | // Stroke currently contributes to our mRect, and our stroke depends on |
| 2985 | // the transform to our outer-<svg> if |vector-effect:non-scaling-stroke|. |
| 2986 | needNewBounds = true; |
| 2987 | } |
| 2988 | } |
| 2989 | |
| 2990 | // If the scale at which we computed our mFontSizeScaleFactor has changed by |
| 2991 | // at least a factor of two, reflow the text. This avoids reflowing text |
| 2992 | // at every tick of a transform animation, but ensures our glyph metrics |
| 2993 | // do not get too far out of sync with the final font size on the screen. |
| 2994 | if (needNewCanvasTM && mLastContextScale != 0.0f) { |
| 2995 | mCanvasTM = nullptr; |
| 2996 | // If we are a non-display frame, then we don't want to call |
| 2997 | // GetCanvasTM(), since the context scale does not use it. |
| 2998 | gfxMatrix newTM = |
| 2999 | HasAnyStateBits(NS_FRAME_IS_NONDISPLAY) ? gfxMatrix() : GetCanvasTM(); |
| 3000 | // Compare the old and new context scales. |
| 3001 | float scale = GetContextScale(newTM); |
| 3002 | float change = scale / mLastContextScale; |
| 3003 | if (change >= 2.0f || change <= 0.5f) { |
| 3004 | needNewBounds = true; |
| 3005 | needGlyphMetricsUpdate = true; |
| 3006 | } |
| 3007 | } |
| 3008 | |
| 3009 | if (needNewBounds) { |
| 3010 | // Ancestor changes can't affect how we render from the perspective of |
| 3011 | // any rendering observers that we may have, so we don't need to |
| 3012 | // invalidate them. We also don't need to invalidate ourself, since our |
| 3013 | // changed ancestor will have invalidated its entire area, which includes |
| 3014 | // our area. |
| 3015 | ScheduleReflowSVG(); |
| 3016 | } |
| 3017 | |
| 3018 | if (needGlyphMetricsUpdate) { |
| 3019 | // If we are positioned using percentage values we need to update our |
| 3020 | // position whenever our viewport's dimensions change. But only do this if |
| 3021 | // we have been reflowed once, otherwise the glyph positioning will be |
| 3022 | // wrong. (We need to wait until bidi reordering has been done.) |
| 3023 | if (!HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) { |
| 3024 | NotifyGlyphMetricsChange(false); |
| 3025 | } |
| 3026 | } |
| 3027 | } |
| 3028 | |
| 3029 | /** |
| 3030 | * Gets the offset into a DOM node that the specified caret is positioned at. |
| 3031 | */ |
| 3032 | static int32_t GetCaretOffset(nsCaret* aCaret) { |
| 3033 | RefPtr<Selection> selection = aCaret->GetSelection(); |
| 3034 | if (!selection) { |
| 3035 | return -1; |
| 3036 | } |
| 3037 | |
| 3038 | return selection->AnchorOffset(); |
| 3039 | } |
| 3040 | |
| 3041 | /** |
| 3042 | * Returns whether the caret should be painted for a given TextRenderedRun |
| 3043 | * by checking whether the caret is in the range covered by the rendered run. |
| 3044 | * |
| 3045 | * @param aThisRun The TextRenderedRun to be painted. |
| 3046 | * @param aCaret The caret. |
| 3047 | */ |
| 3048 | static bool ShouldPaintCaret(const TextRenderedRun& aThisRun, nsCaret* aCaret) { |
| 3049 | int32_t caretOffset = GetCaretOffset(aCaret); |
| 3050 | |
| 3051 | if (caretOffset < 0) { |
| 3052 | return false; |
| 3053 | } |
| 3054 | |
| 3055 | return uint32_t(caretOffset) >= aThisRun.mTextFrameContentOffset && |
| 3056 | uint32_t(caretOffset) < aThisRun.mTextFrameContentOffset + |
| 3057 | aThisRun.mTextFrameContentLength; |
| 3058 | } |
| 3059 | |
| 3060 | void SVGTextFrame::PaintSVG(gfxContext& aContext, const gfxMatrix& aTransform, |
| 3061 | imgDrawingParams& aImgParams) { |
| 3062 | DrawTarget& aDrawTarget = *aContext.GetDrawTarget(); |
| 3063 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 3064 | if (!kid) { |
| 3065 | return; |
| 3066 | } |
| 3067 | |
| 3068 | nsPresContext* presContext = PresContext(); |
| 3069 | |
| 3070 | gfxMatrix initialMatrix = aContext.CurrentMatrixDouble(); |
| 3071 | |
| 3072 | if (HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 3073 | // If we are in a canvas DrawWindow call that used the |
| 3074 | // DRAWWINDOW_DO_NOT_FLUSH flag, then we may still have out |
| 3075 | // of date frames. Just don't paint anything if they are |
| 3076 | // dirty. |
| 3077 | if (presContext->PresShell()->InDrawWindowNotFlushing() && |
| 3078 | IsSubtreeDirty()) { |
| 3079 | return; |
| 3080 | } |
| 3081 | // Text frames inside <clipPath>, <mask>, etc. will never have had |
| 3082 | // ReflowSVG called on them, so call UpdateGlyphPositioning to do this now. |
| 3083 | UpdateGlyphPositioning(); |
| 3084 | } else if (IsSubtreeDirty()) { |
| 3085 | // If we are asked to paint before reflow has recomputed mPositions etc. |
| 3086 | // directly via PaintSVG, rather than via a display list, then we need |
| 3087 | // to bail out here too. |
| 3088 | return; |
| 3089 | } |
| 3090 | |
| 3091 | const float epsilon = 0.0001; |
| 3092 | if (abs(mLengthAdjustScaleFactor) < epsilon) { |
| 3093 | // A zero scale factor can be caused by having forced the text length to |
| 3094 | // zero. In this situation there is nothing to show. |
| 3095 | return; |
| 3096 | } |
| 3097 | |
| 3098 | if (aTransform.IsSingular()) { |
| 3099 | NS_WARNING("Can't render text element!")NS_DebugBreak(NS_DEBUG_WARNING, "Can't render text element!", nullptr, "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3099); |
| 3100 | return; |
| 3101 | } |
| 3102 | |
| 3103 | gfxMatrix matrixForPaintServers = aTransform * initialMatrix; |
| 3104 | |
| 3105 | // SVG frames' PaintSVG methods paint in CSS px, but normally frames paint in |
| 3106 | // dev pixels. Here we multiply a CSS-px-to-dev-pixel factor onto aTransform |
| 3107 | // so our non-SVG nsTextFrame children paint correctly. |
| 3108 | auto auPerDevPx = presContext->AppUnitsPerDevPixel(); |
| 3109 | float cssPxPerDevPx = nsPresContext::AppUnitsToFloatCSSPixels(auPerDevPx); |
| 3110 | gfxMatrix canvasTMForChildren = aTransform; |
| 3111 | canvasTMForChildren.PreScale(cssPxPerDevPx, cssPxPerDevPx); |
| 3112 | initialMatrix.PreScale(1 / cssPxPerDevPx, 1 / cssPxPerDevPx); |
| 3113 | |
| 3114 | gfxContextMatrixAutoSaveRestore matSR(&aContext); |
| 3115 | aContext.NewPath(); |
| 3116 | aContext.Multiply(canvasTMForChildren); |
| 3117 | gfxMatrix currentMatrix = aContext.CurrentMatrixDouble(); |
| 3118 | |
| 3119 | RefPtr<nsCaret> caret = presContext->PresShell()->GetCaret(); |
| 3120 | nsRect caretRect; |
| 3121 | nsIFrame* caretFrame = caret->GetPaintGeometry(&caretRect); |
| 3122 | |
| 3123 | gfxContextAutoSaveRestore ctxSR; |
| 3124 | TextRenderedRunIterator it(this, TextRenderedRunIterator::eVisibleFrames); |
| 3125 | TextRenderedRun run = it.Current(); |
| 3126 | |
| 3127 | SVGContextPaint* outerContextPaint = |
| 3128 | SVGContextPaint::GetContextPaint(GetContent()); |
| 3129 | |
| 3130 | while (run.mFrame) { |
| 3131 | nsTextFrame* frame = run.mFrame; |
| 3132 | |
| 3133 | auto contextPaint = MakeRefPtr<SVGContextPaintImpl>(); |
| 3134 | DrawMode drawMode = contextPaint->Init(&aDrawTarget, initialMatrix, frame, |
| 3135 | outerContextPaint, aImgParams); |
| 3136 | if (drawMode & DrawMode::GLYPH_STROKE) { |
| 3137 | ctxSR.EnsureSaved(&aContext); |
| 3138 | // This may change the gfxContext's transform (for non-scaling stroke), |
| 3139 | // in which case this needs to happen before we call SetMatrix() below. |
| 3140 | SVGUtils::SetupStrokeGeometry(frame->GetParent(), &aContext, |
| 3141 | outerContextPaint); |
| 3142 | } |
| 3143 | |
| 3144 | nscoord startEdge, endEdge; |
| 3145 | run.GetClipEdges(startEdge, endEdge); |
| 3146 | |
| 3147 | // Set up the transform for painting the text frame for the substring |
| 3148 | // indicated by the run. |
| 3149 | gfxMatrix runTransform = run.GetTransformFromUserSpaceForPainting( |
| 3150 | presContext, startEdge, endEdge) * |
| 3151 | currentMatrix; |
| 3152 | aContext.SetMatrixDouble(runTransform); |
| 3153 | |
| 3154 | if (drawMode != DrawMode(0)) { |
| 3155 | bool paintSVGGlyphs; |
| 3156 | nsTextFrame::PaintTextParams params(&aContext); |
| 3157 | params.framePt = Point(); |
| 3158 | params.dirtyRect = |
| 3159 | LayoutDevicePixel::FromAppUnits(frame->InkOverflowRect(), auPerDevPx); |
| 3160 | params.contextPaint = contextPaint; |
| 3161 | bool isSelected; |
| 3162 | if (HasAnyStateBits(NS_STATE_SVG_CLIPPATH_CHILD)) { |
| 3163 | params.state = nsTextFrame::PaintTextParams::GenerateTextMask; |
| 3164 | isSelected = false; |
| 3165 | } else { |
| 3166 | isSelected = frame->IsSelected(); |
| 3167 | } |
| 3168 | gfxGroupForBlendAutoSaveRestore autoGroupForBlend(&aContext); |
| 3169 | float opacity = 1.0f; |
| 3170 | nsIFrame* ancestor = frame->GetParent(); |
| 3171 | while (ancestor != this) { |
| 3172 | opacity *= ancestor->StyleEffects()->mOpacity; |
| 3173 | ancestor = ancestor->GetParent(); |
| 3174 | } |
| 3175 | if (opacity < 1.0f) { |
| 3176 | autoGroupForBlend.PushGroupForBlendBack(gfxContentType::COLOR_ALPHA, |
| 3177 | opacity); |
| 3178 | } |
| 3179 | |
| 3180 | if (ShouldRenderAsPath(frame, paintSVGGlyphs)) { |
| 3181 | SVGTextDrawPathCallbacks callbacks(this, aContext, frame, |
| 3182 | matrixForPaintServers, aImgParams, |
| 3183 | paintSVGGlyphs); |
| 3184 | params.callbacks = &callbacks; |
| 3185 | frame->PaintText(params, startEdge, endEdge, nsPoint(), isSelected); |
| 3186 | } else { |
| 3187 | frame->PaintText(params, startEdge, endEdge, nsPoint(), isSelected); |
| 3188 | } |
| 3189 | } |
| 3190 | |
| 3191 | if (frame == caretFrame && ShouldPaintCaret(run, caret)) { |
| 3192 | // XXX Should we be looking at the fill/stroke colours to paint the |
| 3193 | // caret with, rather than using the color property? |
| 3194 | caret->PaintCaret(aDrawTarget, frame, nsPoint()); |
| 3195 | aContext.NewPath(); |
| 3196 | } |
| 3197 | |
| 3198 | run = it.Next(); |
| 3199 | } |
| 3200 | } |
| 3201 | |
| 3202 | nsIFrame* SVGTextFrame::GetFrameForPoint(const gfxPoint& aPoint) { |
| 3203 | NS_ASSERTION(PrincipalChildList().FirstChild(), "must have a child frame")do { if (!(PrincipalChildList().FirstChild())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "must have a child frame", "PrincipalChildList().FirstChild()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3203); MOZ_PretendNoReturn(); } } while (0); |
| 3204 | |
| 3205 | if (HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 3206 | // Text frames inside <clipPath> will never have had ReflowSVG called on |
| 3207 | // them, so call UpdateGlyphPositioning to do this now. (Text frames |
| 3208 | // inside <mask> and other non-display containers will never need to |
| 3209 | // be hit tested.) |
| 3210 | UpdateGlyphPositioning(); |
| 3211 | } else { |
| 3212 | NS_ASSERTION(!IsSubtreeDirty(), "reflow should have happened")do { if (!(!IsSubtreeDirty())) { NS_DebugBreak(NS_DEBUG_ASSERTION , "reflow should have happened", "!IsSubtreeDirty()", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3212); MOZ_PretendNoReturn(); } } while (0); |
| 3213 | } |
| 3214 | |
| 3215 | // Hit-testing any clip-path will typically be a lot quicker than the |
| 3216 | // hit-testing of our text frames in the loop below, so we do the former up |
| 3217 | // front to avoid unnecessarily wasting cycles on the latter. |
| 3218 | if (!SVGUtils::HitTestClip(this, aPoint)) { |
| 3219 | return nullptr; |
| 3220 | } |
| 3221 | |
| 3222 | nsPresContext* presContext = PresContext(); |
| 3223 | |
| 3224 | // Ideally we'd iterate backwards so that we can just return the first frame |
| 3225 | // that is under aPoint. In practice this will rarely matter though since it |
| 3226 | // is rare for text in/under an SVG <text> element to overlap (i.e. the first |
| 3227 | // text frame that is hit will likely be the only text frame that is hit). |
| 3228 | |
| 3229 | TextRenderedRunIterator it(this); |
| 3230 | nsIFrame* hit = nullptr; |
| 3231 | for (TextRenderedRun run = it.Current(); run.mFrame; run = it.Next()) { |
| 3232 | uint16_t hitTestFlags = SVGUtils::GetGeometryHitTestFlags(run.mFrame); |
| 3233 | if (!hitTestFlags) { |
| 3234 | continue; |
| 3235 | } |
| 3236 | |
| 3237 | gfxMatrix m = run.GetTransformFromRunUserSpaceToUserSpace(presContext); |
| 3238 | if (!m.Invert()) { |
| 3239 | return nullptr; |
| 3240 | } |
| 3241 | |
| 3242 | gfxPoint pointInRunUserSpace = m.TransformPoint(aPoint); |
| 3243 | gfxRect frameRect = run.GetRunUserSpaceRect( |
| 3244 | presContext, TextRenderedRun::eIncludeFill | |
| 3245 | TextRenderedRun::eIncludeStroke) |
| 3246 | .ToThebesRect(); |
| 3247 | |
| 3248 | if (Inside(frameRect, pointInRunUserSpace)) { |
| 3249 | hit = run.mFrame; |
| 3250 | } |
| 3251 | } |
| 3252 | return hit; |
| 3253 | } |
| 3254 | |
| 3255 | void SVGTextFrame::ReflowSVG() { |
| 3256 | MOZ_ASSERT(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this),do { static_assert( mozilla::detail::AssertionConditionType< decltype(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" " (" "This call is probaby a wasteful mistake" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3257); AnnotateMozCrashReason("MOZ_ASSERT" "(" "SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" ") (" "This call is probaby a wasteful mistake" ")"); do { * ((volatile int*)__null) = 3257; __attribute__((nomerge)) ::abort (); } while (false); } } while (false) |
| 3257 | "This call is probaby a wasteful mistake")do { static_assert( mozilla::detail::AssertionConditionType< decltype(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" " (" "This call is probaby a wasteful mistake" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3257); AnnotateMozCrashReason("MOZ_ASSERT" "(" "SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" ") (" "This call is probaby a wasteful mistake" ")"); do { * ((volatile int*)__null) = 3257; __attribute__((nomerge)) ::abort (); } while (false); } } while (false); |
| 3258 | |
| 3259 | MOZ_ASSERT(!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)" " (" "ReflowSVG mechanism not designed for this" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3260); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)" ") (" "ReflowSVG mechanism not designed for this" ")"); do { *((volatile int*)__null) = 3260; __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
| 3260 | "ReflowSVG mechanism not designed for this")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)" " (" "ReflowSVG mechanism not designed for this" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3260); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)" ") (" "ReflowSVG mechanism not designed for this" ")"); do { *((volatile int*)__null) = 3260; __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 3261 | |
| 3262 | if (!SVGUtils::NeedsReflowSVG(this)) { |
| 3263 | MOZ_ASSERT(!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY |do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY)))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY)" " (" "How did this happen?" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3265); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY)" ") (" "How did this happen?" ")"); do { *((volatile int*)__null ) = 3265; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 3264 | NS_STATE_SVG_POSITIONING_DIRTY),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY)))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY)" " (" "How did this happen?" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3265); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY)" ") (" "How did this happen?" ")"); do { *((volatile int*)__null ) = 3265; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 3265 | "How did this happen?")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY)))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY)" " (" "How did this happen?" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3265); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!HasAnyStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | NS_STATE_SVG_POSITIONING_DIRTY)" ") (" "How did this happen?" ")"); do { *((volatile int*)__null ) = 3265; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); |
| 3266 | return; |
| 3267 | } |
| 3268 | |
| 3269 | MaybeReflowAnonymousBlockChild(); |
| 3270 | UpdateGlyphPositioning(); |
| 3271 | |
| 3272 | nsPresContext* presContext = PresContext(); |
| 3273 | |
| 3274 | SVGBBox r; |
| 3275 | TextRenderedRunIterator it(this, TextRenderedRunIterator::eAllFrames); |
| 3276 | for (TextRenderedRun run = it.Current(); run.mFrame; run = it.Next()) { |
| 3277 | uint32_t runFlags = 0; |
| 3278 | if (!run.mFrame->StyleSVG()->mFill.kind.IsNone()) { |
| 3279 | runFlags |= TextRenderedRun::eIncludeFill; |
| 3280 | } |
| 3281 | if (SVGUtils::HasStroke(run.mFrame)) { |
| 3282 | runFlags |= TextRenderedRun::eIncludeStroke; |
| 3283 | } |
| 3284 | // Our "visual" overflow rect needs to be valid for building display lists |
| 3285 | // for hit testing, which means that for certain values of 'pointer-events' |
| 3286 | // it needs to include the geometry of the fill or stroke even when the |
| 3287 | // fill/ stroke don't actually render (e.g. when stroke="none" or |
| 3288 | // stroke-opacity="0"). GetGeometryHitTestFlags accounts for |
| 3289 | // 'pointer-events'. The text-shadow is not part of the hit-test area. |
| 3290 | uint16_t hitTestFlags = SVGUtils::GetGeometryHitTestFlags(run.mFrame); |
| 3291 | if (hitTestFlags & SVG_HIT_TEST_FILL0x01) { |
| 3292 | runFlags |= TextRenderedRun::eIncludeFill; |
| 3293 | } |
| 3294 | if (hitTestFlags & SVG_HIT_TEST_STROKE0x02) { |
| 3295 | runFlags |= TextRenderedRun::eIncludeStroke; |
| 3296 | } |
| 3297 | |
| 3298 | if (runFlags) { |
| 3299 | r.UnionEdges(run.GetUserSpaceRect(presContext, runFlags)); |
| 3300 | } |
| 3301 | } |
| 3302 | |
| 3303 | if (r.IsEmpty()) { |
| 3304 | mRect.SetEmpty(); |
| 3305 | } else { |
| 3306 | mRect = nsLayoutUtils::RoundGfxRectToAppRect(r.ToThebesRect(), |
| 3307 | AppUnitsPerCSSPixel()); |
| 3308 | |
| 3309 | // Due to rounding issues when we have a transform applied, we sometimes |
| 3310 | // don't include an additional row of pixels. For now, just inflate our |
| 3311 | // covered region. |
| 3312 | mRect.Inflate(ceil(presContext->AppUnitsPerDevPixel() / mLastContextScale)); |
| 3313 | } |
| 3314 | |
| 3315 | if (HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) { |
| 3316 | // Make sure we have our filter property (if any) before calling |
| 3317 | // FinishAndStoreOverflow (subsequent filter changes are handled off |
| 3318 | // nsChangeHint_UpdateEffects): |
| 3319 | SVGObserverUtils::UpdateEffects(this); |
| 3320 | } |
| 3321 | |
| 3322 | // Now unset the various reflow bits. Do this before calling |
| 3323 | // FinishAndStoreOverflow since FinishAndStoreOverflow can require glyph |
| 3324 | // positions (to resolve transform-origin). |
| 3325 | RemoveStateBits(NS_FRAME_FIRST_REFLOW | NS_FRAME_IS_DIRTY | |
| 3326 | NS_FRAME_HAS_DIRTY_CHILDREN); |
| 3327 | |
| 3328 | nsRect overflow = nsRect(nsPoint(0, 0), mRect.Size()); |
| 3329 | OverflowAreas overflowAreas(overflow, overflow); |
| 3330 | FinishAndStoreOverflow(overflowAreas, mRect.Size()); |
| 3331 | } |
| 3332 | |
| 3333 | /** |
| 3334 | * Converts SVGUtils::eBBox* flags into TextRenderedRun flags appropriate |
| 3335 | * for the specified rendered run. |
| 3336 | */ |
| 3337 | static uint32_t TextRenderedRunFlagsForBBoxContribution( |
| 3338 | const TextRenderedRun& aRun, uint32_t aBBoxFlags) { |
| 3339 | uint32_t flags = 0; |
| 3340 | if ((aBBoxFlags & SVGUtils::eBBoxIncludeFillGeometry) || |
| 3341 | ((aBBoxFlags & SVGUtils::eBBoxIncludeFill) && |
| 3342 | !aRun.mFrame->StyleSVG()->mFill.kind.IsNone())) { |
| 3343 | flags |= TextRenderedRun::eIncludeFill; |
| 3344 | } |
| 3345 | if ((aBBoxFlags & SVGUtils::eBBoxIncludeStrokeGeometry) || |
| 3346 | ((aBBoxFlags & SVGUtils::eBBoxIncludeStroke) && |
| 3347 | SVGUtils::HasStroke(aRun.mFrame))) { |
| 3348 | flags |= TextRenderedRun::eIncludeStroke; |
| 3349 | } |
| 3350 | return flags; |
| 3351 | } |
| 3352 | |
| 3353 | SVGBBox SVGTextFrame::GetBBoxContribution(const Matrix& aToBBoxUserspace, |
| 3354 | uint32_t aFlags) { |
| 3355 | NS_ASSERTION(PrincipalChildList().FirstChild(), "must have a child frame")do { if (!(PrincipalChildList().FirstChild())) { NS_DebugBreak (NS_DEBUG_ASSERTION, "must have a child frame", "PrincipalChildList().FirstChild()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3355); MOZ_PretendNoReturn(); } } while (0); |
| 3356 | SVGBBox bbox; |
| 3357 | |
| 3358 | if (aFlags & SVGUtils::eForGetClientRects) { |
| 3359 | Rect rect = NSRectToRect(mRect, AppUnitsPerCSSPixel()); |
| 3360 | if (!rect.IsEmpty()) { |
| 3361 | bbox = aToBBoxUserspace.TransformBounds(rect); |
| 3362 | } |
| 3363 | return bbox; |
| 3364 | } |
| 3365 | |
| 3366 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 3367 | if (kid && kid->IsSubtreeDirty()) { |
| 3368 | // Return an empty bbox if our kid's subtree is dirty. This may be called |
| 3369 | // in that situation, e.g. when we're building a display list after an |
| 3370 | // interrupted reflow. This can also be called during reflow before we've |
| 3371 | // been reflowed, e.g. if an earlier sibling is calling |
| 3372 | // FinishAndStoreOverflow and needs our parent's perspective matrix, which |
| 3373 | // depends on the SVG bbox contribution of this frame. In the latter |
| 3374 | // situation, when all siblings have been reflowed, the parent will compute |
| 3375 | // its perspective and rerun FinishAndStoreOverflow for all its children. |
| 3376 | return bbox; |
| 3377 | } |
| 3378 | |
| 3379 | UpdateGlyphPositioning(); |
| 3380 | |
| 3381 | nsPresContext* presContext = PresContext(); |
| 3382 | |
| 3383 | TextRenderedRunIterator it(this); |
| 3384 | for (TextRenderedRun run = it.Current(); run.mFrame; run = it.Next()) { |
| 3385 | uint32_t flags = TextRenderedRunFlagsForBBoxContribution(run, aFlags); |
| 3386 | gfxMatrix m = ThebesMatrix(aToBBoxUserspace); |
| 3387 | SVGBBox bboxForRun = run.GetUserSpaceRect(presContext, flags, &m); |
| 3388 | bbox.UnionEdges(bboxForRun); |
| 3389 | } |
| 3390 | |
| 3391 | return bbox; |
| 3392 | } |
| 3393 | |
| 3394 | //---------------------------------------------------------------------- |
| 3395 | // SVGTextFrame SVG DOM methods |
| 3396 | |
| 3397 | /** |
| 3398 | * Returns whether the specified node has any non-empty Text |
| 3399 | * beneath it. |
| 3400 | */ |
| 3401 | static bool HasTextContent(nsIContent* aContent) { |
| 3402 | NS_ASSERTION(aContent, "expected non-null aContent")do { if (!(aContent)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "expected non-null aContent" , "aContent", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3402); MOZ_PretendNoReturn(); } } while (0); |
| 3403 | |
| 3404 | TextNodeIterator it(aContent); |
| 3405 | for (Text* text = it.Current(); text; text = it.Next()) { |
| 3406 | if (text->TextLength() != 0) { |
| 3407 | return true; |
| 3408 | } |
| 3409 | } |
| 3410 | return false; |
| 3411 | } |
| 3412 | |
| 3413 | /** |
| 3414 | * Returns the number of DOM characters beneath the specified node. |
| 3415 | */ |
| 3416 | static uint32_t GetTextContentLength(nsIContent* aContent) { |
| 3417 | NS_ASSERTION(aContent, "expected non-null aContent")do { if (!(aContent)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "expected non-null aContent" , "aContent", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3417); MOZ_PretendNoReturn(); } } while (0); |
| 3418 | |
| 3419 | uint32_t length = 0; |
| 3420 | TextNodeIterator it(aContent); |
| 3421 | for (Text* text = it.Current(); text; text = it.Next()) { |
| 3422 | length += text->TextLength(); |
| 3423 | } |
| 3424 | return length; |
| 3425 | } |
| 3426 | |
| 3427 | int32_t SVGTextFrame::ConvertTextElementCharIndexToAddressableIndex( |
| 3428 | int32_t aIndex, nsIContent* aContent) { |
| 3429 | CharIterator it(this, CharIterator::eOriginal, aContent); |
| 3430 | if (!it.AdvanceToSubtree()) { |
| 3431 | return -1; |
| 3432 | } |
| 3433 | int32_t result = 0; |
| 3434 | int32_t textElementCharIndex; |
| 3435 | while (!it.AtEnd() && it.IsWithinSubtree()) { |
| 3436 | bool addressable = !it.IsOriginalCharUnaddressable(); |
| 3437 | textElementCharIndex = it.TextElementCharIndex(); |
| 3438 | it.Next(); |
| 3439 | uint32_t delta = it.TextElementCharIndex() - textElementCharIndex; |
| 3440 | aIndex -= delta; |
| 3441 | if (addressable) { |
| 3442 | if (aIndex < 0) { |
| 3443 | return result; |
| 3444 | } |
| 3445 | result += delta; |
| 3446 | } |
| 3447 | } |
| 3448 | return -1; |
| 3449 | } |
| 3450 | |
| 3451 | /** |
| 3452 | * Implements the SVG DOM GetNumberOfChars method for the specified |
| 3453 | * text content element. |
| 3454 | */ |
| 3455 | uint32_t SVGTextFrame::GetNumberOfChars(nsIContent* aContent) { |
| 3456 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 3457 | if (kid->IsSubtreeDirty()) { |
| 3458 | // We're never reflowed if we're under a non-SVG element that is |
| 3459 | // never reflowed (such as the HTML 'caption' element). |
| 3460 | return 0; |
| 3461 | } |
| 3462 | |
| 3463 | UpdateGlyphPositioning(); |
| 3464 | |
| 3465 | uint32_t n = 0; |
| 3466 | CharIterator it(this, CharIterator::eAddressable, aContent); |
| 3467 | if (it.AdvanceToSubtree()) { |
| 3468 | while (!it.AtEnd() && it.IsWithinSubtree()) { |
| 3469 | n++; |
| 3470 | it.Next(); |
| 3471 | } |
| 3472 | } |
| 3473 | return n; |
| 3474 | } |
| 3475 | |
| 3476 | /** |
| 3477 | * Implements the SVG DOM GetComputedTextLength method for the specified |
| 3478 | * text child element. |
| 3479 | */ |
| 3480 | float SVGTextFrame::GetComputedTextLength(nsIContent* aContent) { |
| 3481 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 3482 | if (kid->IsSubtreeDirty()) { |
| 3483 | // We're never reflowed if we're under a non-SVG element that is |
| 3484 | // never reflowed (such as the HTML 'caption' element). |
| 3485 | // |
| 3486 | // If we ever decide that we need to return accurate values here, |
| 3487 | // we could do similar work to GetSubStringLength. |
| 3488 | return 0; |
| 3489 | } |
| 3490 | |
| 3491 | UpdateGlyphPositioning(); |
| 3492 | |
| 3493 | float cssPxPerDevPx = nsPresContext::AppUnitsToFloatCSSPixels( |
| 3494 | PresContext()->AppUnitsPerDevPixel()); |
| 3495 | |
| 3496 | nscoord length = 0; |
| 3497 | TextRenderedRunIterator it(this, TextRenderedRunIterator::eAllFrames, |
| 3498 | aContent); |
| 3499 | for (TextRenderedRun run = it.Current(); run.mFrame; run = it.Next()) { |
| 3500 | length += run.GetAdvanceWidth(); |
| 3501 | } |
| 3502 | |
| 3503 | return PresContext()->AppUnitsToGfxUnits(length) * cssPxPerDevPx * |
| 3504 | mLengthAdjustScaleFactor / mFontSizeScaleFactor; |
| 3505 | } |
| 3506 | |
| 3507 | /** |
| 3508 | * Implements the SVG DOM SelectSubString method for the specified |
| 3509 | * text content element. |
| 3510 | */ |
| 3511 | void SVGTextFrame::SelectSubString(nsIContent* aContent, uint32_t charnum, |
| 3512 | uint32_t nchars, ErrorResult& aRv) { |
| 3513 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 3514 | if (kid->IsSubtreeDirty()) { |
| 3515 | // We're never reflowed if we're under a non-SVG element that is |
| 3516 | // never reflowed (such as the HTML 'caption' element). |
| 3517 | // XXXbz Should this just return without throwing like the no-frame case? |
| 3518 | aRv.ThrowInvalidStateError("No layout information available for SVG text"); |
| 3519 | return; |
| 3520 | } |
| 3521 | |
| 3522 | UpdateGlyphPositioning(); |
| 3523 | |
| 3524 | // Convert charnum/nchars from addressable characters relative to |
| 3525 | // aContent to global character indices. |
| 3526 | CharIterator chit(this, CharIterator::eAddressable, aContent); |
| 3527 | if (!chit.AdvanceToSubtree() || !chit.Next(charnum) || |
| 3528 | chit.IsAfterSubtree()) { |
| 3529 | aRv.ThrowIndexSizeError("Character index out of range"); |
| 3530 | return; |
| 3531 | } |
| 3532 | charnum = chit.TextElementCharIndex(); |
| 3533 | const RefPtr<nsIContent> content = chit.TextFrame()->GetContent(); |
| 3534 | chit.NextWithinSubtree(nchars); |
| 3535 | nchars = chit.TextElementCharIndex() - charnum; |
| 3536 | |
| 3537 | RefPtr<nsFrameSelection> frameSelection = GetFrameSelection(); |
| 3538 | |
| 3539 | frameSelection->HandleClick(content, charnum, charnum + nchars, |
| 3540 | nsFrameSelection::FocusMode::kCollapseToNewPoint, |
| 3541 | CaretAssociationHint::Before); |
| 3542 | } |
| 3543 | |
| 3544 | /** |
| 3545 | * For some content we cannot (or currently cannot) compute the length |
| 3546 | * without reflowing. In those cases we need to fall back to using |
| 3547 | * GetSubStringLengthSlowFallback. |
| 3548 | * |
| 3549 | * We fall back for textPath since we need glyph positioning in order to |
| 3550 | * tell if any characters should be ignored due to having fallen off the |
| 3551 | * end of the textPath. |
| 3552 | * |
| 3553 | * We fall back for bidi because GetTrimmedOffsets does not produce the |
| 3554 | * correct results for bidi continuations when passed aPostReflow = false. |
| 3555 | * XXX It may be possible to determine which continuations to trim from (and |
| 3556 | * which sides), but currently we don't do that. It would require us to |
| 3557 | * identify the visual (rather than logical) start and end of the line, to |
| 3558 | * avoid trimming at line-internal frame boundaries. Maybe nsBidiPresUtils |
| 3559 | * methods like GetFrameToRightOf and GetFrameToLeftOf would help? |
| 3560 | * |
| 3561 | */ |
| 3562 | bool SVGTextFrame::RequiresSlowFallbackForSubStringLength() { |
| 3563 | TextFrameIterator frameIter(this); |
| 3564 | for (nsTextFrame* frame = frameIter.Current(); frame; |
| 3565 | frame = frameIter.Next()) { |
| 3566 | if (frameIter.TextPathFrame() || frame->GetNextContinuation()) { |
| 3567 | return true; |
| 3568 | } |
| 3569 | } |
| 3570 | return false; |
| 3571 | } |
| 3572 | |
| 3573 | /** |
| 3574 | * Implements the SVG DOM GetSubStringLength method for the specified |
| 3575 | * text content element. |
| 3576 | */ |
| 3577 | float SVGTextFrame::GetSubStringLengthFastPath(nsIContent* aContent, |
| 3578 | uint32_t charnum, |
| 3579 | uint32_t nchars, |
| 3580 | ErrorResult& aRv) { |
| 3581 | MOZ_ASSERT(!RequiresSlowFallbackForSubStringLength())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!RequiresSlowFallbackForSubStringLength())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!RequiresSlowFallbackForSubStringLength()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!RequiresSlowFallbackForSubStringLength()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3581); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!RequiresSlowFallbackForSubStringLength()" ")"); do { *((volatile int*)__null) = 3581; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3582 | |
| 3583 | // We only need our text correspondence to be up to date (no need to call |
| 3584 | // UpdateGlyphPositioning). |
| 3585 | TextNodeCorrespondenceRecorder::RecordCorrespondence(this); |
| 3586 | |
| 3587 | // Convert charnum/nchars from addressable characters relative to |
| 3588 | // aContent to global character indices. |
| 3589 | CharIterator chit(this, CharIterator::eAddressable, aContent, |
| 3590 | /* aPostReflow */ false); |
| 3591 | if (!chit.AdvanceToSubtree() || !chit.Next(charnum) || |
| 3592 | chit.IsAfterSubtree()) { |
| 3593 | aRv.ThrowIndexSizeError("Character index out of range"); |
| 3594 | return 0; |
| 3595 | } |
| 3596 | |
| 3597 | // We do this after the ThrowIndexSizeError() bit so JS calls correctly throw |
| 3598 | // when necessary. |
| 3599 | if (nchars == 0) { |
| 3600 | return 0.0f; |
| 3601 | } |
| 3602 | |
| 3603 | charnum = chit.TextElementCharIndex(); |
| 3604 | chit.NextWithinSubtree(nchars); |
| 3605 | nchars = chit.TextElementCharIndex() - charnum; |
| 3606 | |
| 3607 | // Sum of the substring advances. |
| 3608 | nscoord textLength = 0; |
| 3609 | |
| 3610 | TextFrameIterator frit(this); // aSubtree = nullptr |
| 3611 | |
| 3612 | // Index of the first non-skipped char in the frame, and of a subsequent char |
| 3613 | // that we're interested in. Both are relative to the index of the first |
| 3614 | // non-skipped char in the ancestor <text> element. |
| 3615 | uint32_t frameStartTextElementCharIndex = 0; |
| 3616 | uint32_t textElementCharIndex; |
| 3617 | |
| 3618 | for (nsTextFrame* frame = frit.Current(); frame; frame = frit.Next()) { |
| 3619 | frameStartTextElementCharIndex += frit.UndisplayedCharacters(); |
| 3620 | textElementCharIndex = frameStartTextElementCharIndex; |
| 3621 | |
| 3622 | // Offset into frame's Text: |
| 3623 | const uint32_t untrimmedOffset = frame->GetContentOffset(); |
| 3624 | const uint32_t untrimmedLength = frame->GetContentEnd() - untrimmedOffset; |
| 3625 | |
| 3626 | // Trim the offset/length to remove any leading/trailing white space. |
| 3627 | uint32_t trimmedOffset = untrimmedOffset; |
| 3628 | uint32_t trimmedLength = untrimmedLength; |
| 3629 | nsTextFrame::TrimmedOffsets trimmedOffsets = frame->GetTrimmedOffsets( |
| 3630 | frame->TextFragment(), nsTextFrame::TrimmedOffsetFlags::NotPostReflow); |
| 3631 | TrimOffsets(trimmedOffset, trimmedLength, trimmedOffsets); |
| 3632 | |
| 3633 | textElementCharIndex += trimmedOffset - untrimmedOffset; |
| 3634 | |
| 3635 | if (textElementCharIndex >= charnum + nchars) { |
| 3636 | break; // we're past the end of the substring |
| 3637 | } |
| 3638 | |
| 3639 | uint32_t offset = textElementCharIndex; |
| 3640 | |
| 3641 | // Intersect the substring we are interested in with the range covered by |
| 3642 | // the nsTextFrame. |
| 3643 | IntersectInterval(offset, trimmedLength, charnum, nchars); |
| 3644 | |
| 3645 | if (trimmedLength != 0) { |
| 3646 | // Convert offset into an index into the frame. |
| 3647 | offset += trimmedOffset - textElementCharIndex; |
| 3648 | |
| 3649 | gfxSkipCharsIterator it = frame->EnsureTextRun(nsTextFrame::eInflated); |
| 3650 | gfxTextRun* textRun = frame->GetTextRun(nsTextFrame::eInflated); |
| 3651 | nsTextFrame::PropertyProvider provider(frame, it); |
| 3652 | |
| 3653 | Range range = ConvertOriginalToSkipped(it, offset, trimmedLength); |
| 3654 | |
| 3655 | // Accumulate the advance. |
| 3656 | textLength += textRun->GetAdvanceWidth(range, &provider); |
| 3657 | } |
| 3658 | |
| 3659 | // Advance, ready for next call: |
| 3660 | frameStartTextElementCharIndex += untrimmedLength; |
| 3661 | } |
| 3662 | |
| 3663 | nsPresContext* presContext = PresContext(); |
| 3664 | float cssPxPerDevPx = nsPresContext::AppUnitsToFloatCSSPixels( |
| 3665 | presContext->AppUnitsPerDevPixel()); |
| 3666 | |
| 3667 | return presContext->AppUnitsToGfxUnits(textLength) * cssPxPerDevPx / |
| 3668 | mFontSizeScaleFactor; |
| 3669 | } |
| 3670 | |
| 3671 | float SVGTextFrame::GetSubStringLengthSlowFallback(nsIContent* aContent, |
| 3672 | uint32_t charnum, |
| 3673 | uint32_t nchars, |
| 3674 | ErrorResult& aRv) { |
| 3675 | UpdateGlyphPositioning(); |
| 3676 | |
| 3677 | // Convert charnum/nchars from addressable characters relative to |
| 3678 | // aContent to global character indices. |
| 3679 | CharIterator chit(this, CharIterator::eAddressable, aContent); |
| 3680 | if (!chit.AdvanceToSubtree() || !chit.Next(charnum) || |
| 3681 | chit.IsAfterSubtree()) { |
| 3682 | aRv.ThrowIndexSizeError("Character index out of range"); |
| 3683 | return 0; |
| 3684 | } |
| 3685 | |
| 3686 | if (nchars == 0) { |
| 3687 | return 0.0f; |
| 3688 | } |
| 3689 | |
| 3690 | charnum = chit.TextElementCharIndex(); |
| 3691 | chit.NextWithinSubtree(nchars); |
| 3692 | nchars = chit.TextElementCharIndex() - charnum; |
| 3693 | |
| 3694 | // Find each rendered run that intersects with the range defined |
| 3695 | // by charnum/nchars. |
| 3696 | nscoord textLength = 0; |
| 3697 | TextRenderedRunIterator runIter(this, TextRenderedRunIterator::eAllFrames); |
| 3698 | TextRenderedRun run = runIter.Current(); |
| 3699 | while (run.mFrame) { |
| 3700 | // If this rendered run is past the substring we are interested in, we |
| 3701 | // are done. |
| 3702 | uint32_t offset = run.mTextElementCharIndex; |
| 3703 | if (offset >= charnum + nchars) { |
| 3704 | break; |
| 3705 | } |
| 3706 | |
| 3707 | // Intersect the substring we are interested in with the range covered by |
| 3708 | // the rendered run. |
| 3709 | uint32_t length = run.mTextFrameContentLength; |
| 3710 | IntersectInterval(offset, length, charnum, nchars); |
| 3711 | |
| 3712 | if (length != 0) { |
| 3713 | // Convert offset into an index into the frame. |
| 3714 | offset += run.mTextFrameContentOffset - run.mTextElementCharIndex; |
| 3715 | |
| 3716 | gfxSkipCharsIterator it = |
| 3717 | run.mFrame->EnsureTextRun(nsTextFrame::eInflated); |
| 3718 | gfxTextRun* textRun = run.mFrame->GetTextRun(nsTextFrame::eInflated); |
| 3719 | nsTextFrame::PropertyProvider provider(run.mFrame, it); |
| 3720 | |
| 3721 | Range range = ConvertOriginalToSkipped(it, offset, length); |
| 3722 | |
| 3723 | // Accumulate the advance. |
| 3724 | textLength += textRun->GetAdvanceWidth(range, &provider); |
| 3725 | } |
| 3726 | |
| 3727 | run = runIter.Next(); |
| 3728 | } |
| 3729 | |
| 3730 | nsPresContext* presContext = PresContext(); |
| 3731 | float cssPxPerDevPx = nsPresContext::AppUnitsToFloatCSSPixels( |
| 3732 | presContext->AppUnitsPerDevPixel()); |
| 3733 | |
| 3734 | return presContext->AppUnitsToGfxUnits(textLength) * cssPxPerDevPx / |
| 3735 | mFontSizeScaleFactor; |
| 3736 | } |
| 3737 | |
| 3738 | /** |
| 3739 | * Implements the SVG DOM GetCharNumAtPosition method for the specified |
| 3740 | * text content element. |
| 3741 | */ |
| 3742 | int32_t SVGTextFrame::GetCharNumAtPosition(nsIContent* aContent, |
| 3743 | const DOMPointInit& aPoint) { |
| 3744 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 3745 | if (kid->IsSubtreeDirty()) { |
| 3746 | // We're never reflowed if we're under a non-SVG element that is |
| 3747 | // never reflowed (such as the HTML 'caption' element). |
| 3748 | return -1; |
| 3749 | } |
| 3750 | |
| 3751 | UpdateGlyphPositioning(); |
| 3752 | |
| 3753 | nsPresContext* context = PresContext(); |
| 3754 | |
| 3755 | gfxPoint p(aPoint.mX, aPoint.mY); |
| 3756 | |
| 3757 | int32_t result = -1; |
| 3758 | |
| 3759 | TextRenderedRunIterator it(this, TextRenderedRunIterator::eAllFrames, |
| 3760 | aContent); |
| 3761 | for (TextRenderedRun run = it.Current(); run.mFrame; run = it.Next()) { |
| 3762 | // Hit test this rendered run. Later runs will override earlier ones. |
| 3763 | int32_t index = run.GetCharNumAtPosition(context, p); |
| 3764 | if (index != -1) { |
| 3765 | result = index + run.mTextElementCharIndex; |
| 3766 | } |
| 3767 | } |
| 3768 | |
| 3769 | if (result == -1) { |
| 3770 | return result; |
| 3771 | } |
| 3772 | |
| 3773 | return ConvertTextElementCharIndexToAddressableIndex(result, aContent); |
| 3774 | } |
| 3775 | |
| 3776 | /** |
| 3777 | * Implements the SVG DOM GetStartPositionOfChar method for the specified |
| 3778 | * text content element. |
| 3779 | */ |
| 3780 | already_AddRefed<DOMSVGPoint> SVGTextFrame::GetStartPositionOfChar( |
| 3781 | nsIContent* aContent, uint32_t aCharNum, ErrorResult& aRv) { |
| 3782 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 3783 | if (kid->IsSubtreeDirty()) { |
| 3784 | // We're never reflowed if we're under a non-SVG element that is |
| 3785 | // never reflowed (such as the HTML 'caption' element). |
| 3786 | aRv.ThrowInvalidStateError("No layout information available for SVG text"); |
| 3787 | return nullptr; |
| 3788 | } |
| 3789 | |
| 3790 | UpdateGlyphPositioning(); |
| 3791 | |
| 3792 | CharIterator it(this, CharIterator::eAddressable, aContent); |
| 3793 | if (!it.AdvanceToSubtree() || !it.Next(aCharNum)) { |
| 3794 | aRv.ThrowIndexSizeError("Character index out of range"); |
| 3795 | return nullptr; |
| 3796 | } |
| 3797 | |
| 3798 | // We need to return the start position of the whole glyph. |
| 3799 | uint32_t startIndex = it.GlyphStartTextElementCharIndex(); |
| 3800 | |
| 3801 | return do_AddRef(new DOMSVGPoint(ToPoint(mPositions[startIndex].mPosition))); |
| 3802 | } |
| 3803 | |
| 3804 | /** |
| 3805 | * Returns the advance of the entire glyph whose starting character is at |
| 3806 | * aTextElementCharIndex. |
| 3807 | * |
| 3808 | * aIterator, if provided, must be a CharIterator that already points to |
| 3809 | * aTextElementCharIndex that is restricted to aContent and is using |
| 3810 | * filter mode eAddressable. |
| 3811 | */ |
| 3812 | static gfxFloat GetGlyphAdvance(SVGTextFrame* aFrame, nsIContent* aContent, |
| 3813 | uint32_t aTextElementCharIndex, |
| 3814 | CharIterator* aIterator) { |
| 3815 | MOZ_ASSERT(!aIterator || (aIterator->Filter() == CharIterator::eAddressable &&do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aIterator || (aIterator->Filter() == CharIterator ::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!aIterator || (aIterator-> Filter() == CharIterator::eAddressable && aIterator-> GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex () == aTextElementCharIndex)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aIterator || (aIterator->Filter() == CharIterator::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex)" " (" "Invalid aIterator" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3819); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aIterator || (aIterator->Filter() == CharIterator::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex)" ") (" "Invalid aIterator" ")"); do { *((volatile int*)__null ) = 3819; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 3816 | aIterator->GetSubtree() == aContent &&do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aIterator || (aIterator->Filter() == CharIterator ::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!aIterator || (aIterator-> Filter() == CharIterator::eAddressable && aIterator-> GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex () == aTextElementCharIndex)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aIterator || (aIterator->Filter() == CharIterator::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex)" " (" "Invalid aIterator" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3819); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aIterator || (aIterator->Filter() == CharIterator::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex)" ") (" "Invalid aIterator" ")"); do { *((volatile int*)__null ) = 3819; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 3817 | aIterator->GlyphStartTextElementCharIndex() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aIterator || (aIterator->Filter() == CharIterator ::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!aIterator || (aIterator-> Filter() == CharIterator::eAddressable && aIterator-> GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex () == aTextElementCharIndex)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aIterator || (aIterator->Filter() == CharIterator::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex)" " (" "Invalid aIterator" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3819); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aIterator || (aIterator->Filter() == CharIterator::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex)" ") (" "Invalid aIterator" ")"); do { *((volatile int*)__null ) = 3819; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 3818 | aTextElementCharIndex),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aIterator || (aIterator->Filter() == CharIterator ::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!aIterator || (aIterator-> Filter() == CharIterator::eAddressable && aIterator-> GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex () == aTextElementCharIndex)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aIterator || (aIterator->Filter() == CharIterator::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex)" " (" "Invalid aIterator" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3819); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aIterator || (aIterator->Filter() == CharIterator::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex)" ") (" "Invalid aIterator" ")"); do { *((volatile int*)__null ) = 3819; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 3819 | "Invalid aIterator")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aIterator || (aIterator->Filter() == CharIterator ::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!aIterator || (aIterator-> Filter() == CharIterator::eAddressable && aIterator-> GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex () == aTextElementCharIndex)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aIterator || (aIterator->Filter() == CharIterator::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex)" " (" "Invalid aIterator" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3819); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aIterator || (aIterator->Filter() == CharIterator::eAddressable && aIterator->GetSubtree() == aContent && aIterator->GlyphStartTextElementCharIndex() == aTextElementCharIndex)" ") (" "Invalid aIterator" ")"); do { *((volatile int*)__null ) = 3819; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); |
| 3820 | |
| 3821 | Maybe<CharIterator> newIterator; |
| 3822 | CharIterator* it = aIterator; |
| 3823 | if (!it) { |
| 3824 | newIterator.emplace(aFrame, CharIterator::eAddressable, aContent); |
| 3825 | if (!newIterator->AdvanceToSubtree()) { |
| 3826 | MOZ_ASSERT_UNREACHABLE("Invalid aContent")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: " "Invalid aContent" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3826); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Invalid aContent" ")"); do { *(( volatile int*)__null) = 3826; __attribute__((nomerge)) ::abort (); } while (false); } } while (false); |
| 3827 | return 0.0; |
| 3828 | } |
| 3829 | it = newIterator.ptr(); |
| 3830 | } |
| 3831 | |
| 3832 | while (it->GlyphStartTextElementCharIndex() != aTextElementCharIndex) { |
| 3833 | if (!it->Next()) { |
| 3834 | MOZ_ASSERT_UNREACHABLE("Invalid aTextElementCharIndex")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: " "Invalid aTextElementCharIndex" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3834); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Invalid aTextElementCharIndex" ")" ); do { *((volatile int*)__null) = 3834; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3835 | return 0.0; |
| 3836 | } |
| 3837 | } |
| 3838 | |
| 3839 | if (it->AtEnd()) { |
| 3840 | MOZ_ASSERT_UNREACHABLE("Invalid aTextElementCharIndex")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: " "Invalid aTextElementCharIndex" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 3840); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Invalid aTextElementCharIndex" ")" ); do { *((volatile int*)__null) = 3840; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3841 | return 0.0; |
| 3842 | } |
| 3843 | |
| 3844 | nsPresContext* presContext = aFrame->PresContext(); |
| 3845 | gfxFloat advance = 0.0; |
| 3846 | |
| 3847 | for (;;) { |
| 3848 | advance += it->GetAdvance(presContext); |
| 3849 | if (!it->Next() || |
| 3850 | it->GlyphStartTextElementCharIndex() != aTextElementCharIndex) { |
| 3851 | break; |
| 3852 | } |
| 3853 | } |
| 3854 | |
| 3855 | return advance; |
| 3856 | } |
| 3857 | |
| 3858 | /** |
| 3859 | * Implements the SVG DOM GetEndPositionOfChar method for the specified |
| 3860 | * text content element. |
| 3861 | */ |
| 3862 | already_AddRefed<DOMSVGPoint> SVGTextFrame::GetEndPositionOfChar( |
| 3863 | nsIContent* aContent, uint32_t aCharNum, ErrorResult& aRv) { |
| 3864 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 3865 | if (kid->IsSubtreeDirty()) { |
| 3866 | // We're never reflowed if we're under a non-SVG element that is |
| 3867 | // never reflowed (such as the HTML 'caption' element). |
| 3868 | aRv.ThrowInvalidStateError("No layout information available for SVG text"); |
| 3869 | return nullptr; |
| 3870 | } |
| 3871 | |
| 3872 | UpdateGlyphPositioning(); |
| 3873 | |
| 3874 | CharIterator it(this, CharIterator::eAddressable, aContent); |
| 3875 | if (!it.AdvanceToSubtree() || !it.Next(aCharNum)) { |
| 3876 | aRv.ThrowIndexSizeError("Character index out of range"); |
| 3877 | return nullptr; |
| 3878 | } |
| 3879 | |
| 3880 | // We need to return the end position of the whole glyph. |
| 3881 | uint32_t startIndex = it.GlyphStartTextElementCharIndex(); |
| 3882 | |
| 3883 | // Get the advance of the glyph. |
| 3884 | gfxFloat advance = |
| 3885 | GetGlyphAdvance(this, aContent, startIndex, |
| 3886 | it.IsClusterAndLigatureGroupStart() ? &it : nullptr); |
| 3887 | if (it.TextRun()->IsRightToLeft()) { |
| 3888 | advance = -advance; |
| 3889 | } |
| 3890 | |
| 3891 | // The end position is the start position plus the advance in the direction |
| 3892 | // of the glyph's rotation. |
| 3893 | Matrix m = Matrix::Rotation(mPositions[startIndex].mAngle) * |
| 3894 | Matrix::Translation(ToPoint(mPositions[startIndex].mPosition)); |
| 3895 | Point p = m.TransformPoint(Point(advance / mFontSizeScaleFactor, 0)); |
| 3896 | |
| 3897 | return do_AddRef(new DOMSVGPoint(p)); |
| 3898 | } |
| 3899 | |
| 3900 | /** |
| 3901 | * Implements the SVG DOM GetExtentOfChar method for the specified |
| 3902 | * text content element. |
| 3903 | */ |
| 3904 | already_AddRefed<SVGRect> SVGTextFrame::GetExtentOfChar(nsIContent* aContent, |
| 3905 | uint32_t aCharNum, |
| 3906 | ErrorResult& aRv) { |
| 3907 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 3908 | if (kid->IsSubtreeDirty()) { |
| 3909 | // We're never reflowed if we're under a non-SVG element that is |
| 3910 | // never reflowed (such as the HTML 'caption' element). |
| 3911 | aRv.ThrowInvalidStateError("No layout information available for SVG text"); |
| 3912 | return nullptr; |
| 3913 | } |
| 3914 | |
| 3915 | UpdateGlyphPositioning(); |
| 3916 | |
| 3917 | // Search for the character whose addressable index is aCharNum. |
| 3918 | CharIterator it(this, CharIterator::eAddressable, aContent); |
| 3919 | if (!it.AdvanceToSubtree() || !it.Next(aCharNum)) { |
| 3920 | aRv.ThrowIndexSizeError("Character index out of range"); |
| 3921 | return nullptr; |
| 3922 | } |
| 3923 | |
| 3924 | nsPresContext* presContext = PresContext(); |
| 3925 | float cssPxPerDevPx = nsPresContext::AppUnitsToFloatCSSPixels( |
| 3926 | presContext->AppUnitsPerDevPixel()); |
| 3927 | |
| 3928 | nsTextFrame* textFrame = it.TextFrame(); |
| 3929 | uint32_t startIndex = it.GlyphStartTextElementCharIndex(); |
| 3930 | bool isRTL = it.TextRun()->IsRightToLeft(); |
| 3931 | bool isVertical = it.TextRun()->IsVertical(); |
| 3932 | |
| 3933 | // Get the glyph advance. |
| 3934 | gfxFloat advance = |
| 3935 | GetGlyphAdvance(this, aContent, startIndex, |
| 3936 | it.IsClusterAndLigatureGroupStart() ? &it : nullptr); |
| 3937 | gfxFloat x = isRTL ? -advance : 0.0; |
| 3938 | |
| 3939 | // The ascent and descent gives the height of the glyph. |
| 3940 | gfxFloat ascent, descent; |
| 3941 | GetAscentAndDescentInAppUnits(textFrame, ascent, descent); |
| 3942 | |
| 3943 | // The horizontal extent is the origin of the glyph plus the advance |
| 3944 | // in the direction of the glyph's rotation. |
| 3945 | gfxMatrix m; |
| 3946 | m.PreTranslate(mPositions[startIndex].mPosition); |
| 3947 | m.PreRotate(mPositions[startIndex].mAngle); |
| 3948 | m.PreScale(1 / mFontSizeScaleFactor, 1 / mFontSizeScaleFactor); |
| 3949 | |
| 3950 | gfxRect glyphRect; |
| 3951 | if (isVertical) { |
| 3952 | glyphRect = gfxRect( |
| 3953 | -presContext->AppUnitsToGfxUnits(descent) * cssPxPerDevPx, x, |
| 3954 | presContext->AppUnitsToGfxUnits(ascent + descent) * cssPxPerDevPx, |
| 3955 | advance); |
| 3956 | } else { |
| 3957 | glyphRect = gfxRect( |
| 3958 | x, -presContext->AppUnitsToGfxUnits(ascent) * cssPxPerDevPx, advance, |
| 3959 | presContext->AppUnitsToGfxUnits(ascent + descent) * cssPxPerDevPx); |
| 3960 | } |
| 3961 | |
| 3962 | // Transform the glyph's rect into user space. |
| 3963 | gfxRect r = m.TransformBounds(glyphRect); |
| 3964 | |
| 3965 | return do_AddRef(new SVGRect(aContent, ToRect(r))); |
| 3966 | } |
| 3967 | |
| 3968 | /** |
| 3969 | * Implements the SVG DOM GetRotationOfChar method for the specified |
| 3970 | * text content element. |
| 3971 | */ |
| 3972 | float SVGTextFrame::GetRotationOfChar(nsIContent* aContent, uint32_t aCharNum, |
| 3973 | ErrorResult& aRv) { |
| 3974 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 3975 | if (kid->IsSubtreeDirty()) { |
| 3976 | // We're never reflowed if we're under a non-SVG element that is |
| 3977 | // never reflowed (such as the HTML 'caption' element). |
| 3978 | aRv.ThrowInvalidStateError("No layout information available for SVG text"); |
| 3979 | return 0; |
| 3980 | } |
| 3981 | |
| 3982 | UpdateGlyphPositioning(); |
| 3983 | |
| 3984 | CharIterator it(this, CharIterator::eAddressable, aContent); |
| 3985 | if (!it.AdvanceToSubtree() || !it.Next(aCharNum)) { |
| 3986 | aRv.ThrowIndexSizeError("Character index out of range"); |
| 3987 | return 0; |
| 3988 | } |
| 3989 | |
| 3990 | // we need to account for the glyph's underlying orientation |
| 3991 | const gfxTextRun::GlyphRun& glyphRun = it.GlyphRun(); |
| 3992 | int32_t glyphOrientation = |
| 3993 | 90 * (glyphRun.IsSidewaysRight() - glyphRun.IsSidewaysLeft()); |
| 3994 | |
| 3995 | return mPositions[it.TextElementCharIndex()].mAngle * 180.0 / M_PI3.14159265358979323846 + |
| 3996 | glyphOrientation; |
| 3997 | } |
| 3998 | |
| 3999 | //---------------------------------------------------------------------- |
| 4000 | // SVGTextFrame text layout methods |
| 4001 | |
| 4002 | /** |
| 4003 | * Given the character position array before values have been filled in |
| 4004 | * to any unspecified positions, and an array of dx/dy values, returns whether |
| 4005 | * a character at a given index should start a new rendered run. |
| 4006 | * |
| 4007 | * @param aPositions The array of character positions before unspecified |
| 4008 | * positions have been filled in and dx/dy values have been added to them. |
| 4009 | * @param aDeltas The array of dx/dy values. |
| 4010 | * @param aIndex The character index in question. |
| 4011 | */ |
| 4012 | static bool ShouldStartRunAtIndex(const nsTArray<CharPosition>& aPositions, |
| 4013 | const nsTArray<gfxPoint>& aDeltas, |
| 4014 | uint32_t aIndex) { |
| 4015 | if (aIndex == 0) { |
| 4016 | return true; |
| 4017 | } |
| 4018 | |
| 4019 | if (aIndex < aPositions.Length()) { |
| 4020 | // If an explicit x or y value was given, start a new run. |
| 4021 | if (aPositions[aIndex].IsXSpecified() || |
| 4022 | aPositions[aIndex].IsYSpecified()) { |
| 4023 | return true; |
| 4024 | } |
| 4025 | |
| 4026 | // If a non-zero rotation was given, or the previous character had a non- |
| 4027 | // zero rotation, start a new run. |
| 4028 | if ((aPositions[aIndex].IsAngleSpecified() && |
| 4029 | aPositions[aIndex].mAngle != 0.0f) || |
| 4030 | (aPositions[aIndex - 1].IsAngleSpecified() && |
| 4031 | (aPositions[aIndex - 1].mAngle != 0.0f))) { |
| 4032 | return true; |
| 4033 | } |
| 4034 | } |
| 4035 | |
| 4036 | if (aIndex < aDeltas.Length()) { |
| 4037 | // If a non-zero dx or dy value was given, start a new run. |
| 4038 | if (aDeltas[aIndex].x != 0.0 || aDeltas[aIndex].y != 0.0) { |
| 4039 | return true; |
| 4040 | } |
| 4041 | } |
| 4042 | |
| 4043 | return false; |
| 4044 | } |
| 4045 | |
| 4046 | bool SVGTextFrame::ResolvePositionsForNode(nsIContent* aContent, |
| 4047 | uint32_t& aIndex, bool aInTextPath, |
| 4048 | bool& aForceStartOfChunk, |
| 4049 | nsTArray<gfxPoint>& aDeltas) { |
| 4050 | if (aContent->IsText()) { |
| 4051 | // We found a text node. |
| 4052 | uint32_t length = aContent->AsText()->TextLength(); |
| 4053 | if (length) { |
| 4054 | uint32_t end = aIndex + length; |
| 4055 | if (MOZ_UNLIKELY(end > mPositions.Length())(__builtin_expect(!!(end > mPositions.Length()), 0))) { |
| 4056 | 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: " "length of mPositions does not match characters " "found by iterating content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4058); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "length of mPositions does not match characters " "found by iterating content" ")"); do { *((volatile int*)__null ) = 4058; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 4057 | "length of mPositions does not match characters "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: " "length of mPositions does not match characters " "found by iterating content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4058); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "length of mPositions does not match characters " "found by iterating content" ")"); do { *((volatile int*)__null ) = 4058; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 4058 | "found by iterating content")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: " "length of mPositions does not match characters " "found by iterating content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4058); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "length of mPositions does not match characters " "found by iterating content" ")"); do { *((volatile int*)__null ) = 4058; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); |
| 4059 | return false; |
| 4060 | } |
| 4061 | if (aForceStartOfChunk) { |
| 4062 | // Note this character as starting a new anchored chunk. |
| 4063 | mPositions[aIndex].mStartOfChunk = true; |
| 4064 | aForceStartOfChunk = false; |
| 4065 | } |
| 4066 | while (aIndex < end) { |
| 4067 | // Record whether each of these characters should start a new rendered |
| 4068 | // run. That is always the case for characters on a text path. |
| 4069 | // |
| 4070 | // Run boundaries due to rotate="" values are handled in |
| 4071 | // DoGlyphPositioning. |
| 4072 | if (aInTextPath || ShouldStartRunAtIndex(mPositions, aDeltas, aIndex)) { |
| 4073 | mPositions[aIndex].mRunBoundary = true; |
| 4074 | } |
| 4075 | aIndex++; |
| 4076 | } |
| 4077 | } |
| 4078 | return true; |
| 4079 | } |
| 4080 | |
| 4081 | // Skip past elements that aren't text content elements. |
| 4082 | if (!IsTextContentElement(aContent)) { |
| 4083 | return true; |
| 4084 | } |
| 4085 | |
| 4086 | if (aContent->IsSVGElement(nsGkAtoms::textPath)) { |
| 4087 | // Any ‘y’ attributes on horizontal <textPath> elements are ignored. |
| 4088 | // Similarly, for vertical <texPath>s x attributes are ignored. |
| 4089 | // <textPath> elements behave as if they have x="0" y="0" on them, but only |
| 4090 | // if there is not a value for the non-ignored coordinate that got inherited |
| 4091 | // from a parent. We skip this if there is no text content, so that empty |
| 4092 | // <textPath>s don't interrupt the layout of text in the parent element. |
| 4093 | if (HasTextContent(aContent)) { |
| 4094 | if (MOZ_UNLIKELY(aIndex >= mPositions.Length())(__builtin_expect(!!(aIndex >= mPositions.Length()), 0))) { |
| 4095 | 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: " "length of mPositions does not match characters " "found by iterating content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4097); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "length of mPositions does not match characters " "found by iterating content" ")"); do { *((volatile int*)__null ) = 4097; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 4096 | "length of mPositions does not match characters "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: " "length of mPositions does not match characters " "found by iterating content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4097); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "length of mPositions does not match characters " "found by iterating content" ")"); do { *((volatile int*)__null ) = 4097; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 4097 | "found by iterating content")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: " "length of mPositions does not match characters " "found by iterating content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4097); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "length of mPositions does not match characters " "found by iterating content" ")"); do { *((volatile int*)__null ) = 4097; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); |
| 4098 | return false; |
| 4099 | } |
| 4100 | bool vertical = GetWritingMode().IsVertical(); |
| 4101 | if (vertical || !mPositions[aIndex].IsXSpecified()) { |
| 4102 | mPositions[aIndex].mPosition.x = 0.0; |
| 4103 | } |
| 4104 | if (!vertical || !mPositions[aIndex].IsYSpecified()) { |
| 4105 | mPositions[aIndex].mPosition.y = 0.0; |
| 4106 | } |
| 4107 | mPositions[aIndex].mStartOfChunk = true; |
| 4108 | } |
| 4109 | } else if (!aContent->IsSVGElement(nsGkAtoms::a)) { |
| 4110 | MOZ_ASSERT(aContent->IsSVGElement())do { static_assert( mozilla::detail::AssertionConditionType< decltype(aContent->IsSVGElement())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aContent->IsSVGElement()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aContent->IsSVGElement()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4110); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aContent->IsSVGElement()" ")"); do { *((volatile int*)__null) = 4110; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4111 | |
| 4112 | // We have a text content element that can have x/y/dx/dy/rotate attributes. |
| 4113 | SVGElement* element = static_cast<SVGElement*>(aContent); |
| 4114 | |
| 4115 | // Get x, y, dx, dy. |
| 4116 | SVGUserUnitList x, y, dx, dy; |
| 4117 | element->GetAnimatedLengthListValues(&x, &y, &dx, &dy, nullptr); |
| 4118 | |
| 4119 | // Get rotate. |
| 4120 | const SVGNumberList* rotate = nullptr; |
| 4121 | SVGAnimatedNumberList* animatedRotate = |
| 4122 | element->GetAnimatedNumberList(nsGkAtoms::rotate); |
| 4123 | if (animatedRotate) { |
| 4124 | rotate = &animatedRotate->GetAnimValue(); |
| 4125 | } |
| 4126 | |
| 4127 | bool percentages = false; |
| 4128 | uint32_t count = GetTextContentLength(aContent); |
| 4129 | |
| 4130 | if (MOZ_UNLIKELY(aIndex + count > mPositions.Length())(__builtin_expect(!!(aIndex + count > mPositions.Length()) , 0))) { |
| 4131 | 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: " "length of mPositions does not match characters " "found by iterating content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4133); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "length of mPositions does not match characters " "found by iterating content" ")"); do { *((volatile int*)__null ) = 4133; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 4132 | "length of mPositions does not match characters "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: " "length of mPositions does not match characters " "found by iterating content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4133); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "length of mPositions does not match characters " "found by iterating content" ")"); do { *((volatile int*)__null ) = 4133; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false) |
| 4133 | "found by iterating content")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: " "length of mPositions does not match characters " "found by iterating content" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4133); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "length of mPositions does not match characters " "found by iterating content" ")"); do { *((volatile int*)__null ) = 4133; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); |
| 4134 | return false; |
| 4135 | } |
| 4136 | |
| 4137 | // New text anchoring chunks start at each character assigned a position |
| 4138 | // with x="" or y="", or if we forced one with aForceStartOfChunk due to |
| 4139 | // being just after a <textPath>. |
| 4140 | uint32_t newChunkCount = std::max(x.Length(), y.Length()); |
| 4141 | if (!newChunkCount && aForceStartOfChunk) { |
| 4142 | newChunkCount = 1; |
| 4143 | } |
| 4144 | for (uint32_t i = 0, j = 0; i < newChunkCount && j < count; j++) { |
| 4145 | if (!mPositions[aIndex + j].mUnaddressable) { |
| 4146 | mPositions[aIndex + j].mStartOfChunk = true; |
| 4147 | i++; |
| 4148 | } |
| 4149 | } |
| 4150 | |
| 4151 | // Copy dx="" and dy="" values into aDeltas. |
| 4152 | if (!dx.IsEmpty() || !dy.IsEmpty()) { |
| 4153 | // Any unspecified deltas when we grow the array just get left as 0s. |
| 4154 | aDeltas.EnsureLengthAtLeast(aIndex + count); |
| 4155 | for (uint32_t i = 0, j = 0; i < dx.Length() && j < count; j++) { |
| 4156 | if (!mPositions[aIndex + j].mUnaddressable) { |
| 4157 | aDeltas[aIndex + j].x = dx[i]; |
| 4158 | percentages = percentages || dx.HasPercentageValueAt(i); |
| 4159 | i++; |
| 4160 | } |
| 4161 | } |
| 4162 | for (uint32_t i = 0, j = 0; i < dy.Length() && j < count; j++) { |
| 4163 | if (!mPositions[aIndex + j].mUnaddressable) { |
| 4164 | aDeltas[aIndex + j].y = dy[i]; |
| 4165 | percentages = percentages || dy.HasPercentageValueAt(i); |
| 4166 | i++; |
| 4167 | } |
| 4168 | } |
| 4169 | } |
| 4170 | |
| 4171 | // Copy x="" and y="" values. |
| 4172 | for (uint32_t i = 0, j = 0; i < x.Length() && j < count; j++) { |
| 4173 | if (!mPositions[aIndex + j].mUnaddressable) { |
| 4174 | mPositions[aIndex + j].mPosition.x = x[i]; |
| 4175 | percentages = percentages || x.HasPercentageValueAt(i); |
| 4176 | i++; |
| 4177 | } |
| 4178 | } |
| 4179 | for (uint32_t i = 0, j = 0; i < y.Length() && j < count; j++) { |
| 4180 | if (!mPositions[aIndex + j].mUnaddressable) { |
| 4181 | mPositions[aIndex + j].mPosition.y = y[i]; |
| 4182 | percentages = percentages || y.HasPercentageValueAt(i); |
| 4183 | i++; |
| 4184 | } |
| 4185 | } |
| 4186 | |
| 4187 | // Copy rotate="" values. |
| 4188 | if (rotate && !rotate->IsEmpty()) { |
| 4189 | uint32_t i = 0, j = 0; |
| 4190 | while (i < rotate->Length() && j < count) { |
| 4191 | if (!mPositions[aIndex + j].mUnaddressable) { |
| 4192 | mPositions[aIndex + j].mAngle = M_PI3.14159265358979323846 * (*rotate)[i] / 180.0; |
| 4193 | i++; |
| 4194 | } |
| 4195 | j++; |
| 4196 | } |
| 4197 | // Propagate final rotate="" value to the end of this element. |
| 4198 | while (j < count) { |
| 4199 | mPositions[aIndex + j].mAngle = mPositions[aIndex + j - 1].mAngle; |
| 4200 | j++; |
| 4201 | } |
| 4202 | } |
| 4203 | |
| 4204 | if (percentages) { |
| 4205 | AddStateBits(NS_STATE_SVG_POSITIONING_MAY_USE_PERCENTAGES); |
| 4206 | } |
| 4207 | } |
| 4208 | |
| 4209 | // Recurse to children. |
| 4210 | bool inTextPath = aInTextPath || aContent->IsSVGElement(nsGkAtoms::textPath); |
| 4211 | for (nsIContent* child = aContent->GetFirstChild(); child; |
| 4212 | child = child->GetNextSibling()) { |
| 4213 | bool ok = ResolvePositionsForNode(child, aIndex, inTextPath, |
| 4214 | aForceStartOfChunk, aDeltas); |
| 4215 | if (!ok) { |
| 4216 | return false; |
| 4217 | } |
| 4218 | } |
| 4219 | |
| 4220 | if (aContent->IsSVGElement(nsGkAtoms::textPath)) { |
| 4221 | // Force a new anchored chunk just after a <textPath>. |
| 4222 | aForceStartOfChunk = true; |
| 4223 | } |
| 4224 | |
| 4225 | return true; |
| 4226 | } |
| 4227 | |
| 4228 | bool SVGTextFrame::ResolvePositions(nsTArray<gfxPoint>& aDeltas, |
| 4229 | bool aRunPerGlyph) { |
| 4230 | NS_ASSERTION(mPositions.IsEmpty(), "expected mPositions to be empty")do { if (!(mPositions.IsEmpty())) { NS_DebugBreak(NS_DEBUG_ASSERTION , "expected mPositions to be empty", "mPositions.IsEmpty()", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4230); MOZ_PretendNoReturn(); } } while (0); |
| 4231 | RemoveStateBits(NS_STATE_SVG_POSITIONING_MAY_USE_PERCENTAGES); |
| 4232 | |
| 4233 | CharIterator it(this, CharIterator::eOriginal, /* aSubtree */ nullptr); |
| 4234 | if (it.AtEnd()) { |
| 4235 | return false; |
| 4236 | } |
| 4237 | |
| 4238 | // We assume the first character position is (0,0) unless we later see |
| 4239 | // otherwise, and note it as unaddressable if it is. |
| 4240 | bool firstCharUnaddressable = it.IsOriginalCharUnaddressable(); |
| 4241 | mPositions.AppendElement(CharPosition::Unspecified(firstCharUnaddressable)); |
| 4242 | |
| 4243 | // Fill in unspecified positions for all remaining characters, noting |
| 4244 | // them as unaddressable if they are. |
| 4245 | uint32_t index = 0; |
| 4246 | while (it.Next()) { |
| 4247 | while (++index < it.TextElementCharIndex()) { |
| 4248 | mPositions.AppendElement(CharPosition::Unspecified(false)); |
| 4249 | } |
| 4250 | mPositions.AppendElement( |
| 4251 | CharPosition::Unspecified(it.IsOriginalCharUnaddressable())); |
| 4252 | } |
| 4253 | while (++index < it.TextElementCharIndex()) { |
| 4254 | mPositions.AppendElement(CharPosition::Unspecified(false)); |
| 4255 | } |
| 4256 | |
| 4257 | // Recurse over the content and fill in character positions as we go. |
| 4258 | bool forceStartOfChunk = false; |
| 4259 | index = 0; |
| 4260 | bool ok = ResolvePositionsForNode(mContent, index, aRunPerGlyph, |
| 4261 | forceStartOfChunk, aDeltas); |
| 4262 | return ok && index > 0; |
| 4263 | } |
| 4264 | |
| 4265 | void SVGTextFrame::DetermineCharPositions(nsTArray<nsPoint>& aPositions) { |
| 4266 | NS_ASSERTION(aPositions.IsEmpty(), "expected aPositions to be empty")do { if (!(aPositions.IsEmpty())) { NS_DebugBreak(NS_DEBUG_ASSERTION , "expected aPositions to be empty", "aPositions.IsEmpty()", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4266); MOZ_PretendNoReturn(); } } while (0); |
| 4267 | |
| 4268 | nsPoint position; |
| 4269 | |
| 4270 | TextFrameIterator frit(this); |
| 4271 | for (nsTextFrame* frame = frit.Current(); frame; frame = frit.Next()) { |
| 4272 | gfxSkipCharsIterator it = frame->EnsureTextRun(nsTextFrame::eInflated); |
| 4273 | gfxTextRun* textRun = frame->GetTextRun(nsTextFrame::eInflated); |
| 4274 | nsTextFrame::PropertyProvider provider(frame, it); |
| 4275 | |
| 4276 | // Reset the position to the new frame's position. |
| 4277 | position = frit.Position(); |
| 4278 | if (textRun->IsVertical()) { |
| 4279 | if (textRun->IsRightToLeft()) { |
| 4280 | position.y += frame->GetRect().height; |
| 4281 | } |
| 4282 | position.x += GetBaselinePosition(frame, textRun, frit.DominantBaseline(), |
| 4283 | mFontSizeScaleFactor); |
| 4284 | } else { |
| 4285 | if (textRun->IsRightToLeft()) { |
| 4286 | position.x += frame->GetRect().width; |
| 4287 | } |
| 4288 | position.y += GetBaselinePosition(frame, textRun, frit.DominantBaseline(), |
| 4289 | mFontSizeScaleFactor); |
| 4290 | } |
| 4291 | |
| 4292 | // Any characters not in a frame, e.g. when display:none. |
| 4293 | for (uint32_t i = 0; i < frit.UndisplayedCharacters(); i++) { |
| 4294 | aPositions.AppendElement(position); |
| 4295 | } |
| 4296 | |
| 4297 | // Any white space characters trimmed at the start of the line of text. |
| 4298 | nsTextFrame::TrimmedOffsets trimmedOffsets = |
| 4299 | frame->GetTrimmedOffsets(frame->TextFragment()); |
| 4300 | while (it.GetOriginalOffset() < trimmedOffsets.mStart) { |
| 4301 | aPositions.AppendElement(position); |
| 4302 | it.AdvanceOriginal(1); |
| 4303 | } |
| 4304 | |
| 4305 | // Visible characters in the text frame. |
| 4306 | while (it.GetOriginalOffset() < frame->GetContentEnd()) { |
| 4307 | aPositions.AppendElement(position); |
| 4308 | if (!it.IsOriginalCharSkipped()) { |
| 4309 | // Accumulate partial ligature advance into position. (We must get |
| 4310 | // partial advances rather than get the advance of the whole ligature |
| 4311 | // group / cluster at once, since the group may span text frames, and |
| 4312 | // the PropertyProvider only has spacing information for the current |
| 4313 | // text frame.) |
| 4314 | uint32_t offset = it.GetSkippedOffset(); |
| 4315 | nscoord advance = |
| 4316 | textRun->GetAdvanceWidth(Range(offset, offset + 1), &provider); |
| 4317 | (textRun->IsVertical() ? position.y : position.x) += |
| 4318 | textRun->IsRightToLeft() ? -advance : advance; |
| 4319 | } |
| 4320 | it.AdvanceOriginal(1); |
| 4321 | } |
| 4322 | } |
| 4323 | |
| 4324 | // Finally any characters at the end that are not in a frame. |
| 4325 | for (uint32_t i = 0; i < frit.UndisplayedCharacters(); i++) { |
| 4326 | aPositions.AppendElement(position); |
| 4327 | } |
| 4328 | } |
| 4329 | |
| 4330 | /** |
| 4331 | * Physical text-anchor values. |
| 4332 | */ |
| 4333 | enum TextAnchorSide { eAnchorLeft, eAnchorMiddle, eAnchorRight }; |
| 4334 | |
| 4335 | /** |
| 4336 | * Converts a logical text-anchor value to its physical value, based on whether |
| 4337 | * it is for an RTL frame. |
| 4338 | */ |
| 4339 | static TextAnchorSide ConvertLogicalTextAnchorToPhysical( |
| 4340 | StyleTextAnchor aTextAnchor, bool aIsRightToLeft) { |
| 4341 | NS_ASSERTION(uint8_t(aTextAnchor) <= 3, "unexpected value for aTextAnchor")do { if (!(uint8_t(aTextAnchor) <= 3)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "unexpected value for aTextAnchor", "uint8_t(aTextAnchor) <= 3" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4341); MOZ_PretendNoReturn(); } } while (0); |
| 4342 | if (!aIsRightToLeft) { |
| 4343 | return TextAnchorSide(uint8_t(aTextAnchor)); |
| 4344 | } |
| 4345 | return TextAnchorSide(2 - uint8_t(aTextAnchor)); |
| 4346 | } |
| 4347 | |
| 4348 | /** |
| 4349 | * Shifts the recorded character positions for an anchored chunk. |
| 4350 | * |
| 4351 | * @param aCharPositions The recorded character positions. |
| 4352 | * @param aChunkStart The character index the starts the anchored chunk. This |
| 4353 | * character's initial position is the anchor point. |
| 4354 | * @param aChunkEnd The character index just after the end of the anchored |
| 4355 | * chunk. |
| 4356 | * @param aVisIStartEdge The left/top-most edge of any of the glyphs within the |
| 4357 | * anchored chunk. |
| 4358 | * @param aVisIEndEdge The right/bottom-most edge of any of the glyphs within |
| 4359 | * the anchored chunk. |
| 4360 | * @param aAnchorSide The direction to anchor. |
| 4361 | */ |
| 4362 | static void ShiftAnchoredChunk(nsTArray<CharPosition>& aCharPositions, |
| 4363 | uint32_t aChunkStart, uint32_t aChunkEnd, |
| 4364 | gfxFloat aVisIStartEdge, gfxFloat aVisIEndEdge, |
| 4365 | TextAnchorSide aAnchorSide, bool aVertical) { |
| 4366 | NS_ASSERTION(aVisIStartEdge <= aVisIEndEdge,do { if (!(aVisIStartEdge <= aVisIEndEdge)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "unexpected anchored chunk edges", "aVisIStartEdge <= aVisIEndEdge" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4367); MOZ_PretendNoReturn(); } } while (0) |
| 4367 | "unexpected anchored chunk edges")do { if (!(aVisIStartEdge <= aVisIEndEdge)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "unexpected anchored chunk edges", "aVisIStartEdge <= aVisIEndEdge" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4367); MOZ_PretendNoReturn(); } } while (0); |
| 4368 | NS_ASSERTION(aChunkStart < aChunkEnd,do { if (!(aChunkStart < aChunkEnd)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "unexpected values for aChunkStart and aChunkEnd", "aChunkStart < aChunkEnd" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4369); MOZ_PretendNoReturn(); } } while (0) |
| 4369 | "unexpected values for aChunkStart and aChunkEnd")do { if (!(aChunkStart < aChunkEnd)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "unexpected values for aChunkStart and aChunkEnd", "aChunkStart < aChunkEnd" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4369); MOZ_PretendNoReturn(); } } while (0); |
| 4370 | |
| 4371 | gfxFloat shift = aVertical ? aCharPositions[aChunkStart].mPosition.y |
| 4372 | : aCharPositions[aChunkStart].mPosition.x; |
| 4373 | switch (aAnchorSide) { |
| 4374 | case eAnchorLeft: |
| 4375 | shift -= aVisIStartEdge; |
| 4376 | break; |
| 4377 | case eAnchorMiddle: |
| 4378 | shift -= (aVisIStartEdge + aVisIEndEdge) / 2; |
| 4379 | break; |
| 4380 | case eAnchorRight: |
| 4381 | shift -= aVisIEndEdge; |
| 4382 | break; |
| 4383 | default: |
| 4384 | MOZ_ASSERT_UNREACHABLE("unexpected value for aAnchorSide")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 value for aAnchorSide" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4384); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "unexpected value for aAnchorSide" ")"); do { *((volatile int*)__null) = 4384; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4385 | } |
| 4386 | |
| 4387 | if (shift != 0.0) { |
| 4388 | if (aVertical) { |
| 4389 | for (uint32_t i = aChunkStart; i < aChunkEnd; i++) { |
| 4390 | aCharPositions[i].mPosition.y += shift; |
| 4391 | } |
| 4392 | } else { |
| 4393 | for (uint32_t i = aChunkStart; i < aChunkEnd; i++) { |
| 4394 | aCharPositions[i].mPosition.x += shift; |
| 4395 | } |
| 4396 | } |
| 4397 | } |
| 4398 | } |
| 4399 | |
| 4400 | void SVGTextFrame::AdjustChunksForLineBreaks() { |
| 4401 | nsBlockFrame* block = do_QueryFrame(PrincipalChildList().FirstChild()); |
| 4402 | NS_ASSERTION(block, "expected block frame")do { if (!(block)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "expected block frame" , "block", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4402); MOZ_PretendNoReturn(); } } while (0); |
| 4403 | |
| 4404 | nsBlockFrame::LineIterator line = block->LinesBegin(); |
| 4405 | |
| 4406 | CharIterator it(this, CharIterator::eOriginal, /* aSubtree */ nullptr); |
| 4407 | while (!it.AtEnd() && line != block->LinesEnd()) { |
| 4408 | if (it.TextFrame() == line->mFirstChild) { |
| 4409 | mPositions[it.TextElementCharIndex()].mStartOfChunk = true; |
| 4410 | line++; |
| 4411 | } |
| 4412 | it.AdvancePastCurrentFrame(); |
| 4413 | } |
| 4414 | } |
| 4415 | |
| 4416 | void SVGTextFrame::AdjustPositionsForClusters() { |
| 4417 | nsPresContext* presContext = PresContext(); |
| 4418 | |
| 4419 | // Find all of the characters that are in the middle of a cluster or |
| 4420 | // ligature group, and adjust their positions and rotations to match |
| 4421 | // the first character of the cluster/group. |
| 4422 | // |
| 4423 | // Also move the boundaries of text rendered runs and anchored chunks to |
| 4424 | // not lie in the middle of cluster/group. |
| 4425 | |
| 4426 | // The partial advance of the current cluster or ligature group that we |
| 4427 | // have accumulated. |
| 4428 | gfxFloat partialAdvance = 0.0; |
| 4429 | |
| 4430 | CharIterator it(this, CharIterator::eUnskipped, /* aSubtree */ nullptr); |
| 4431 | bool isFirst = true; |
| 4432 | while (!it.AtEnd()) { |
| 4433 | if (it.IsClusterAndLigatureGroupStart() || isFirst) { |
| 4434 | // If we're at the start of a new cluster or ligature group, reset our |
| 4435 | // accumulated partial advance. Also treat the beginning of the text as |
| 4436 | // an anchor, even if it is a combining character and therefore was |
| 4437 | // marked as being a Unicode cluster continuation. |
| 4438 | partialAdvance = 0.0; |
| 4439 | isFirst = false; |
| 4440 | } else { |
| 4441 | // Otherwise, we're in the middle of a cluster or ligature group, and |
| 4442 | // we need to use the currently accumulated partial advance to adjust |
| 4443 | // the character's position and rotation. |
| 4444 | |
| 4445 | // Find the start of the cluster/ligature group. |
| 4446 | uint32_t charIndex = it.TextElementCharIndex(); |
| 4447 | uint32_t startIndex = it.GlyphStartTextElementCharIndex(); |
| 4448 | MOZ_ASSERT(charIndex != startIndex,do { static_assert( mozilla::detail::AssertionConditionType< decltype(charIndex != startIndex)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(charIndex != startIndex))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("charIndex != startIndex" " (" "If the current character is in the middle of a cluster or " "ligature group, then charIndex must be different from " "startIndex" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4451); AnnotateMozCrashReason("MOZ_ASSERT" "(" "charIndex != startIndex" ") (" "If the current character is in the middle of a cluster or " "ligature group, then charIndex must be different from " "startIndex" ")"); do { *((volatile int*)__null) = 4451; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 4449 | "If the current character is in the middle of a cluster or "do { static_assert( mozilla::detail::AssertionConditionType< decltype(charIndex != startIndex)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(charIndex != startIndex))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("charIndex != startIndex" " (" "If the current character is in the middle of a cluster or " "ligature group, then charIndex must be different from " "startIndex" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4451); AnnotateMozCrashReason("MOZ_ASSERT" "(" "charIndex != startIndex" ") (" "If the current character is in the middle of a cluster or " "ligature group, then charIndex must be different from " "startIndex" ")"); do { *((volatile int*)__null) = 4451; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 4450 | "ligature group, then charIndex must be different from "do { static_assert( mozilla::detail::AssertionConditionType< decltype(charIndex != startIndex)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(charIndex != startIndex))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("charIndex != startIndex" " (" "If the current character is in the middle of a cluster or " "ligature group, then charIndex must be different from " "startIndex" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4451); AnnotateMozCrashReason("MOZ_ASSERT" "(" "charIndex != startIndex" ") (" "If the current character is in the middle of a cluster or " "ligature group, then charIndex must be different from " "startIndex" ")"); do { *((volatile int*)__null) = 4451; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 4451 | "startIndex")do { static_assert( mozilla::detail::AssertionConditionType< decltype(charIndex != startIndex)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(charIndex != startIndex))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("charIndex != startIndex" " (" "If the current character is in the middle of a cluster or " "ligature group, then charIndex must be different from " "startIndex" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4451); AnnotateMozCrashReason("MOZ_ASSERT" "(" "charIndex != startIndex" ") (" "If the current character is in the middle of a cluster or " "ligature group, then charIndex must be different from " "startIndex" ")"); do { *((volatile int*)__null) = 4451; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4452 | |
| 4453 | mPositions[charIndex].mClusterOrLigatureGroupMiddle = true; |
| 4454 | |
| 4455 | // Don't allow different rotations on ligature parts. |
| 4456 | bool rotationAdjusted = false; |
| 4457 | double angle = mPositions[startIndex].mAngle; |
| 4458 | if (mPositions[charIndex].mAngle != angle) { |
| 4459 | mPositions[charIndex].mAngle = angle; |
| 4460 | rotationAdjusted = true; |
| 4461 | } |
| 4462 | |
| 4463 | // Update the character position. |
| 4464 | gfxFloat advance = partialAdvance / mFontSizeScaleFactor; |
| 4465 | gfxPoint direction = gfxPoint(cos(angle), sin(angle)) * |
| 4466 | (it.TextRun()->IsRightToLeft() ? -1.0 : 1.0); |
| 4467 | if (it.TextRun()->IsVertical()) { |
| 4468 | std::swap(direction.x, direction.y); |
| 4469 | } |
| 4470 | mPositions[charIndex].mPosition = |
| 4471 | mPositions[startIndex].mPosition + direction * advance; |
| 4472 | |
| 4473 | // Ensure any runs that would end in the middle of a ligature now end just |
| 4474 | // after the ligature. |
| 4475 | if (mPositions[charIndex].mRunBoundary) { |
| 4476 | mPositions[charIndex].mRunBoundary = false; |
| 4477 | if (charIndex + 1 < mPositions.Length()) { |
| 4478 | mPositions[charIndex + 1].mRunBoundary = true; |
| 4479 | } |
| 4480 | } else if (rotationAdjusted) { |
| 4481 | if (charIndex + 1 < mPositions.Length()) { |
| 4482 | mPositions[charIndex + 1].mRunBoundary = true; |
| 4483 | } |
| 4484 | } |
| 4485 | |
| 4486 | // Ensure any anchored chunks that would begin in the middle of a ligature |
| 4487 | // now begin just after the ligature. |
| 4488 | if (mPositions[charIndex].mStartOfChunk) { |
| 4489 | mPositions[charIndex].mStartOfChunk = false; |
| 4490 | if (charIndex + 1 < mPositions.Length()) { |
| 4491 | mPositions[charIndex + 1].mStartOfChunk = true; |
| 4492 | } |
| 4493 | } |
| 4494 | } |
| 4495 | |
| 4496 | // Accumulate the current character's partial advance. |
| 4497 | partialAdvance += it.GetAdvance(presContext); |
| 4498 | |
| 4499 | it.Next(); |
| 4500 | } |
| 4501 | } |
| 4502 | |
| 4503 | already_AddRefed<Path> SVGTextFrame::GetTextPath(nsIFrame* aTextPathFrame) { |
| 4504 | nsIContent* content = aTextPathFrame->GetContent(); |
| 4505 | SVGTextPathElement* tp = static_cast<SVGTextPathElement*>(content); |
| 4506 | if (tp->mPath.IsRendered()) { |
| 4507 | // This is just an attribute so there's no transform that can apply |
| 4508 | // so we can just return the path directly. |
| 4509 | return tp->mPath.GetAnimValue().BuildPathForMeasuring( |
| 4510 | aTextPathFrame->Style()->EffectiveZoom().ToFloat()); |
| 4511 | } |
| 4512 | |
| 4513 | SVGGeometryElement* geomElement = |
| 4514 | SVGObserverUtils::GetAndObserveTextPathsPath(aTextPathFrame); |
| 4515 | if (!geomElement) { |
| 4516 | return nullptr; |
| 4517 | } |
| 4518 | |
| 4519 | RefPtr<Path> path = geomElement->GetOrBuildPathForMeasuring(); |
| 4520 | if (!path) { |
| 4521 | return nullptr; |
| 4522 | } |
| 4523 | |
| 4524 | gfxMatrix matrix = geomElement->PrependLocalTransformsTo(gfxMatrix()); |
| 4525 | if (!matrix.IsIdentity()) { |
| 4526 | // Apply the geometry element's transform |
| 4527 | RefPtr<PathBuilder> builder = |
| 4528 | path->TransformedCopyToBuilder(ToMatrix(matrix)); |
| 4529 | path = builder->Finish(); |
| 4530 | } |
| 4531 | |
| 4532 | return path.forget(); |
| 4533 | } |
| 4534 | |
| 4535 | gfxFloat SVGTextFrame::GetOffsetScale(nsIFrame* aTextPathFrame) { |
| 4536 | nsIContent* content = aTextPathFrame->GetContent(); |
| 4537 | SVGTextPathElement* tp = static_cast<SVGTextPathElement*>(content); |
| 4538 | if (tp->mPath.IsRendered()) { |
| 4539 | // A path attribute has no pathLength or transform |
| 4540 | // so we return a unit scale. |
| 4541 | return 1.0; |
| 4542 | } |
| 4543 | |
| 4544 | SVGGeometryElement* geomElement = |
| 4545 | SVGObserverUtils::GetAndObserveTextPathsPath(aTextPathFrame); |
| 4546 | if (!geomElement) { |
| 4547 | return 1.0; |
| 4548 | } |
| 4549 | return geomElement->GetPathLengthScale(SVGGeometryElement::eForTextPath); |
| 4550 | } |
| 4551 | |
| 4552 | gfxFloat SVGTextFrame::GetStartOffset(nsIFrame* aTextPathFrame) { |
| 4553 | SVGTextPathElement* tp = |
| 4554 | static_cast<SVGTextPathElement*>(aTextPathFrame->GetContent()); |
| 4555 | SVGAnimatedLength* length = |
| 4556 | &tp->mLengthAttributes[SVGTextPathElement::STARTOFFSET]; |
| 4557 | |
| 4558 | if (length->IsPercentage()) { |
| 4559 | if (!std::isfinite(GetOffsetScale(aTextPathFrame))) { |
| 4560 | // Either pathLength="0" for this path or the path has 0 length. |
| 4561 | return 0.0; |
| 4562 | } |
| 4563 | RefPtr<Path> data = GetTextPath(aTextPathFrame); |
| 4564 | return data ? length->GetAnimValInSpecifiedUnits() * data->ComputeLength() / |
| 4565 | 100.0 |
| 4566 | : 0.0; |
| 4567 | } |
| 4568 | float lengthValue = length->GetAnimValueWithZoom(tp); |
| 4569 | // If offsetScale is infinity we want to return 0 not NaN |
| 4570 | return lengthValue == 0 ? 0.0 : lengthValue * GetOffsetScale(aTextPathFrame); |
| 4571 | } |
| 4572 | |
| 4573 | void SVGTextFrame::DoTextPathLayout() { |
| 4574 | nsPresContext* context = PresContext(); |
| 4575 | |
| 4576 | CharIterator it(this, CharIterator::eOriginal, /* aSubtree */ nullptr); |
| 4577 | while (!it.AtEnd()) { |
| 4578 | nsIFrame* textPathFrame = it.TextPathFrame(); |
| 4579 | if (!textPathFrame) { |
| 4580 | // Skip past this frame if we're not in a text path. |
| 4581 | it.AdvancePastCurrentFrame(); |
| 4582 | continue; |
| 4583 | } |
| 4584 | |
| 4585 | // Get the path itself. |
| 4586 | RefPtr<Path> path = GetTextPath(textPathFrame); |
| 4587 | if (!path) { |
| 4588 | uint32_t start = it.TextElementCharIndex(); |
| 4589 | it.AdvancePastCurrentTextPathFrame(); |
| 4590 | uint32_t end = it.TextElementCharIndex(); |
| 4591 | for (uint32_t i = start; i < end; i++) { |
| 4592 | mPositions[i].mHidden = true; |
| 4593 | } |
| 4594 | continue; |
| 4595 | } |
| 4596 | |
| 4597 | SVGTextPathElement* textPath = |
| 4598 | static_cast<SVGTextPathElement*>(textPathFrame->GetContent()); |
| 4599 | uint16_t side = |
| 4600 | textPath->EnumAttributes()[SVGTextPathElement::SIDE].GetAnimValue(); |
| 4601 | |
| 4602 | gfxFloat offset = GetStartOffset(textPathFrame); |
| 4603 | Float pathLength = path->ComputeLength(); |
| 4604 | |
| 4605 | // If the first character within the text path is in the middle of a |
| 4606 | // cluster or ligature group, just skip it and don't apply text path |
| 4607 | // positioning. |
| 4608 | while (!it.AtEnd()) { |
| 4609 | if (it.IsOriginalCharSkipped()) { |
| 4610 | it.Next(); |
| 4611 | continue; |
| 4612 | } |
| 4613 | if (it.IsClusterAndLigatureGroupStart()) { |
| 4614 | break; |
| 4615 | } |
| 4616 | it.Next(); |
| 4617 | } |
| 4618 | |
| 4619 | bool skippedEndOfTextPath = false; |
| 4620 | |
| 4621 | // Loop for each character in the text path. |
| 4622 | while (!it.AtEnd() && it.TextPathFrame() && |
| 4623 | it.TextPathFrame()->GetContent() == textPath) { |
| 4624 | // The index of the cluster or ligature group's first character. |
| 4625 | uint32_t i = it.TextElementCharIndex(); |
| 4626 | |
| 4627 | // The index of the next character of the cluster or ligature. |
| 4628 | // We track this as we loop over the characters below so that we |
| 4629 | // can detect undisplayed characters and append entries into |
| 4630 | // partialAdvances for them. |
| 4631 | uint32_t j = i + 1; |
| 4632 | |
| 4633 | MOZ_ASSERT(!mPositions[i].mClusterOrLigatureGroupMiddle)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mPositions[i].mClusterOrLigatureGroupMiddle)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!mPositions[i].mClusterOrLigatureGroupMiddle))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!mPositions[i].mClusterOrLigatureGroupMiddle" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4633); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!mPositions[i].mClusterOrLigatureGroupMiddle" ")"); do { *((volatile int*)__null) = 4633; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4634 | |
| 4635 | gfxFloat sign = it.TextRun()->IsRightToLeft() ? -1.0 : 1.0; |
| 4636 | bool vertical = it.TextRun()->IsVertical(); |
| 4637 | |
| 4638 | // Compute cumulative advances for each character of the cluster or |
| 4639 | // ligature group. |
| 4640 | AutoTArray<gfxFloat, 4> partialAdvances; |
| 4641 | gfxFloat partialAdvance = it.GetAdvance(context); |
| 4642 | partialAdvances.AppendElement(partialAdvance); |
| 4643 | while (it.Next()) { |
| 4644 | // Append entries for any undisplayed characters the CharIterator |
| 4645 | // skipped over. |
| 4646 | MOZ_ASSERT(j <= it.TextElementCharIndex())do { static_assert( mozilla::detail::AssertionConditionType< decltype(j <= it.TextElementCharIndex())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(j <= it.TextElementCharIndex ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("j <= it.TextElementCharIndex()", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4646); AnnotateMozCrashReason("MOZ_ASSERT" "(" "j <= it.TextElementCharIndex()" ")"); do { *((volatile int*)__null) = 4646; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4647 | while (j < it.TextElementCharIndex()) { |
| 4648 | partialAdvances.AppendElement(partialAdvance); |
| 4649 | ++j; |
| 4650 | } |
| 4651 | // This loop may end up outside of the current text path, but |
| 4652 | // that's OK; we'll consider any complete cluster or ligature |
| 4653 | // group that begins inside the text path as being affected |
| 4654 | // by it. |
| 4655 | if (it.IsOriginalCharSkipped()) { |
| 4656 | if (!it.TextPathFrame()) { |
| 4657 | skippedEndOfTextPath = true; |
| 4658 | break; |
| 4659 | } |
| 4660 | // Leave partialAdvance unchanged. |
| 4661 | } else if (it.IsClusterAndLigatureGroupStart()) { |
| 4662 | break; |
| 4663 | } else { |
| 4664 | partialAdvance += it.GetAdvance(context); |
| 4665 | } |
| 4666 | partialAdvances.AppendElement(partialAdvance); |
| 4667 | } |
| 4668 | |
| 4669 | if (!skippedEndOfTextPath) { |
| 4670 | // Any final undisplayed characters the CharIterator skipped over. |
| 4671 | MOZ_ASSERT(j <= it.TextElementCharIndex())do { static_assert( mozilla::detail::AssertionConditionType< decltype(j <= it.TextElementCharIndex())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(j <= it.TextElementCharIndex ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("j <= it.TextElementCharIndex()", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4671); AnnotateMozCrashReason("MOZ_ASSERT" "(" "j <= it.TextElementCharIndex()" ")"); do { *((volatile int*)__null) = 4671; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4672 | while (j < it.TextElementCharIndex()) { |
| 4673 | partialAdvances.AppendElement(partialAdvance); |
| 4674 | ++j; |
| 4675 | } |
| 4676 | } |
| 4677 | |
| 4678 | gfxFloat halfAdvance = |
| 4679 | partialAdvances.LastElement() / mFontSizeScaleFactor / 2.0; |
| 4680 | gfxFloat midx = |
| 4681 | (vertical ? mPositions[i].mPosition.y : mPositions[i].mPosition.x) + |
| 4682 | sign * halfAdvance + offset; |
| 4683 | |
| 4684 | // Hide the character if it falls off the end of the path. |
| 4685 | mPositions[i].mHidden = midx < 0 || midx > pathLength; |
| 4686 | |
| 4687 | // Position the character on the path at the right angle. |
| 4688 | Point tangent; // Unit vector tangent to the point we find. |
| 4689 | Point pt; |
| 4690 | if (side == TEXTPATH_SIDETYPE_RIGHT) { |
| 4691 | pt = path->ComputePointAtLength(Float(pathLength - midx), &tangent); |
| 4692 | tangent = -tangent; |
| 4693 | } else { |
| 4694 | pt = path->ComputePointAtLength(Float(midx), &tangent); |
| 4695 | } |
| 4696 | Float rotation = vertical ? atan2f(-tangent.x, tangent.y) |
| 4697 | : atan2f(tangent.y, tangent.x); |
| 4698 | Point normal(-tangent.y, tangent.x); // Unit vector normal to the point. |
| 4699 | Point offsetFromPath = normal * (vertical ? -mPositions[i].mPosition.x |
| 4700 | : mPositions[i].mPosition.y); |
| 4701 | pt += offsetFromPath; |
| 4702 | Point direction = tangent * sign; |
| 4703 | mPositions[i].mPosition = |
| 4704 | ThebesPoint(pt) - ThebesPoint(direction) * halfAdvance; |
| 4705 | mPositions[i].mAngle += rotation; |
| 4706 | |
| 4707 | // Position any characters for a partial ligature. |
| 4708 | for (uint32_t k = i + 1; k < j; k++) { |
| 4709 | gfxPoint partialAdvance = ThebesPoint(direction) * |
| 4710 | partialAdvances[k - i] / mFontSizeScaleFactor; |
| 4711 | mPositions[k].mPosition = mPositions[i].mPosition + partialAdvance; |
| 4712 | mPositions[k].mAngle = mPositions[i].mAngle; |
| 4713 | mPositions[k].mHidden = mPositions[i].mHidden; |
| 4714 | } |
| 4715 | } |
| 4716 | } |
| 4717 | } |
| 4718 | |
| 4719 | void SVGTextFrame::DoAnchoring() { |
| 4720 | nsPresContext* presContext = PresContext(); |
| 4721 | |
| 4722 | CharIterator it(this, CharIterator::eOriginal, /* aSubtree */ nullptr); |
| 4723 | |
| 4724 | // Don't need to worry about skipped or trimmed characters. |
| 4725 | while (!it.AtEnd() && |
| 4726 | (it.IsOriginalCharSkipped() || it.IsOriginalCharTrimmed())) { |
| 4727 | it.Next(); |
| 4728 | } |
| 4729 | |
| 4730 | bool vertical = GetWritingMode().IsVertical(); |
| 4731 | for (uint32_t start = it.TextElementCharIndex(); start < mPositions.Length(); |
| 4732 | start = it.TextElementCharIndex()) { |
| 4733 | it.AdvanceToCharacter(start); |
| 4734 | nsTextFrame* chunkFrame = it.TextFrame(); |
| 4735 | |
| 4736 | // Measure characters in this chunk to find the left-most and right-most |
| 4737 | // edges of all glyphs within the chunk. |
| 4738 | uint32_t index = it.TextElementCharIndex(); |
| 4739 | uint32_t end = start; |
Value stored to 'end' during its initialization is never read | |
| 4740 | gfxFloat left = std::numeric_limits<gfxFloat>::infinity(); |
| 4741 | gfxFloat right = -std::numeric_limits<gfxFloat>::infinity(); |
| 4742 | do { |
| 4743 | if (!it.IsOriginalCharSkipped() && !it.IsOriginalCharTrimmed()) { |
| 4744 | gfxFloat advance = it.GetAdvance(presContext) / mFontSizeScaleFactor; |
| 4745 | gfxFloat pos = it.TextRun()->IsVertical() |
| 4746 | ? mPositions[index].mPosition.y |
| 4747 | : mPositions[index].mPosition.x; |
| 4748 | if (it.TextRun()->IsRightToLeft()) { |
| 4749 | left = std::min(left, pos - advance); |
| 4750 | right = std::max(right, pos); |
| 4751 | } else { |
| 4752 | left = std::min(left, pos); |
| 4753 | right = std::max(right, pos + advance); |
| 4754 | } |
| 4755 | } |
| 4756 | it.Next(); |
| 4757 | index = end = it.TextElementCharIndex(); |
| 4758 | } while (!it.AtEnd() && !mPositions[end].mStartOfChunk); |
| 4759 | |
| 4760 | if (left != std::numeric_limits<gfxFloat>::infinity()) { |
| 4761 | bool isRTL = |
| 4762 | chunkFrame->StyleVisibility()->mDirection == StyleDirection::Rtl; |
| 4763 | TextAnchorSide anchor = ConvertLogicalTextAnchorToPhysical( |
| 4764 | chunkFrame->StyleSVG()->mTextAnchor, isRTL); |
| 4765 | |
| 4766 | ShiftAnchoredChunk(mPositions, start, end, left, right, anchor, vertical); |
| 4767 | } |
| 4768 | } |
| 4769 | } |
| 4770 | |
| 4771 | void SVGTextFrame::DoGlyphPositioning() { |
| 4772 | mPositions.Clear(); |
| 4773 | RemoveStateBits(NS_STATE_SVG_POSITIONING_DIRTY); |
| 4774 | |
| 4775 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 4776 | if (kid && kid->IsSubtreeDirty()) { |
| 4777 | MOZ_ASSERT(false, "should have already reflowed the kid")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "should have already reflowed the kid" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4777); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "should have already reflowed the kid" ")"); do { *((volatile int*)__null) = 4777; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 4778 | return; |
| 4779 | } |
| 4780 | |
| 4781 | // Since we can be called directly via GetBBoxContribution, our correspondence |
| 4782 | // may not be up to date. |
| 4783 | TextNodeCorrespondenceRecorder::RecordCorrespondence(this); |
| 4784 | |
| 4785 | // Determine the positions of each character in app units. |
| 4786 | AutoTArray<nsPoint, 64> charPositions; |
| 4787 | DetermineCharPositions(charPositions); |
| 4788 | |
| 4789 | if (charPositions.IsEmpty()) { |
| 4790 | // No characters, so nothing to do. |
| 4791 | return; |
| 4792 | } |
| 4793 | |
| 4794 | // If the textLength="" attribute was specified, then we need ResolvePositions |
| 4795 | // to record that a new run starts with each glyph. |
| 4796 | SVGTextContentElement* element = |
| 4797 | static_cast<SVGTextContentElement*>(GetContent()); |
| 4798 | SVGAnimatedLength* textLengthAttr = |
| 4799 | element->GetAnimatedLength(nsGkAtoms::textLength); |
| 4800 | uint16_t lengthAdjust = |
| 4801 | element->EnumAttributes()[SVGTextContentElement::LENGTHADJUST] |
| 4802 | .GetAnimValue(); |
| 4803 | bool adjustingTextLength = textLengthAttr->IsExplicitlySet(); |
| 4804 | float expectedTextLength = textLengthAttr->GetAnimValueWithZoom(element); |
| 4805 | |
| 4806 | if (adjustingTextLength && |
| 4807 | (expectedTextLength < 0.0f || lengthAdjust == LENGTHADJUST_UNKNOWN)) { |
| 4808 | // If textLength="" is less than zero or lengthAdjust is unknown, ignore it. |
| 4809 | adjustingTextLength = false; |
| 4810 | } |
| 4811 | |
| 4812 | // Get the x, y, dx, dy, rotate values for the subtree. |
| 4813 | AutoTArray<gfxPoint, 16> deltas; |
| 4814 | if (!ResolvePositions(deltas, adjustingTextLength)) { |
| 4815 | // If ResolvePositions returned false, it means either there were some |
| 4816 | // characters in the DOM but none of them are displayed, or there was |
| 4817 | // an error in processing mPositions. Clear out mPositions so that we don't |
| 4818 | // attempt to do any painting later. |
| 4819 | mPositions.Clear(); |
| 4820 | return; |
| 4821 | } |
| 4822 | |
| 4823 | // XXX We might be able to do less work when there is at most a single |
| 4824 | // x/y/dx/dy position. |
| 4825 | |
| 4826 | // Truncate the positioning arrays to the actual number of characters present. |
| 4827 | TruncateTo(deltas, charPositions); |
| 4828 | TruncateTo(mPositions, charPositions); |
| 4829 | |
| 4830 | // Fill in an unspecified position for the first addressable character. |
| 4831 | uint32_t first = 0; |
| 4832 | while (first + 1 < mPositions.Length() && mPositions[first].mUnaddressable) { |
| 4833 | ++first; |
| 4834 | } |
| 4835 | if (!mPositions[first].IsXSpecified()) { |
| 4836 | mPositions[first].mPosition.x = 0.0; |
| 4837 | } |
| 4838 | if (!mPositions[first].IsYSpecified()) { |
| 4839 | mPositions[first].mPosition.y = 0.0; |
| 4840 | } |
| 4841 | if (!mPositions[first].IsAngleSpecified()) { |
| 4842 | mPositions[first].mAngle = 0.0; |
| 4843 | } |
| 4844 | |
| 4845 | nsPresContext* presContext = PresContext(); |
| 4846 | bool vertical = GetWritingMode().IsVertical(); |
| 4847 | |
| 4848 | float cssPxPerDevPx = nsPresContext::AppUnitsToFloatCSSPixels( |
| 4849 | presContext->AppUnitsPerDevPixel()); |
| 4850 | double factor = cssPxPerDevPx / mFontSizeScaleFactor; |
| 4851 | |
| 4852 | // Determine how much to compress or expand glyph positions due to |
| 4853 | // textLength="" and lengthAdjust="". |
| 4854 | double adjustment = 0.0; |
| 4855 | mLengthAdjustScaleFactor = 1.0f; |
| 4856 | if (adjustingTextLength) { |
| 4857 | nscoord frameLength = |
| 4858 | vertical ? PrincipalChildList().FirstChild()->GetRect().height |
| 4859 | : PrincipalChildList().FirstChild()->GetRect().width; |
| 4860 | float actualTextLength = static_cast<float>( |
| 4861 | presContext->AppUnitsToGfxUnits(frameLength) * factor); |
| 4862 | |
| 4863 | switch (lengthAdjust) { |
| 4864 | case LENGTHADJUST_SPACINGANDGLYPHS: |
| 4865 | // Scale the glyphs and their positions. |
| 4866 | if (actualTextLength > 0) { |
| 4867 | mLengthAdjustScaleFactor = expectedTextLength / actualTextLength; |
| 4868 | } |
| 4869 | break; |
| 4870 | |
| 4871 | default: |
| 4872 | MOZ_ASSERT(lengthAdjust == LENGTHADJUST_SPACING)do { static_assert( mozilla::detail::AssertionConditionType< decltype(lengthAdjust == LENGTHADJUST_SPACING)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(lengthAdjust == LENGTHADJUST_SPACING ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "lengthAdjust == LENGTHADJUST_SPACING", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4872); AnnotateMozCrashReason("MOZ_ASSERT" "(" "lengthAdjust == LENGTHADJUST_SPACING" ")"); do { *((volatile int*)__null) = 4872; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4873 | // Just add space between each glyph. |
| 4874 | int32_t adjustableSpaces = 0; |
| 4875 | for (uint32_t i = 1; i < mPositions.Length(); i++) { |
| 4876 | if (!mPositions[i].mUnaddressable) { |
| 4877 | adjustableSpaces++; |
| 4878 | } |
| 4879 | } |
| 4880 | if (adjustableSpaces) { |
| 4881 | adjustment = |
| 4882 | (expectedTextLength - actualTextLength) / adjustableSpaces; |
| 4883 | } |
| 4884 | break; |
| 4885 | } |
| 4886 | } |
| 4887 | |
| 4888 | // Fill in any unspecified character positions based on the positions recorded |
| 4889 | // in charPositions, and also add in the dx/dy values. |
| 4890 | if (!deltas.IsEmpty()) { |
| 4891 | mPositions[0].mPosition += deltas[0]; |
| 4892 | } |
| 4893 | |
| 4894 | gfxFloat xLengthAdjustFactor = vertical ? 1.0 : mLengthAdjustScaleFactor; |
| 4895 | gfxFloat yLengthAdjustFactor = vertical ? mLengthAdjustScaleFactor : 1.0; |
| 4896 | for (uint32_t i = 1; i < mPositions.Length(); i++) { |
| 4897 | // Fill in unspecified x position. |
| 4898 | if (!mPositions[i].IsXSpecified()) { |
| 4899 | nscoord d = charPositions[i].x - charPositions[i - 1].x; |
| 4900 | mPositions[i].mPosition.x = |
| 4901 | mPositions[i - 1].mPosition.x + |
| 4902 | presContext->AppUnitsToGfxUnits(d) * factor * xLengthAdjustFactor; |
| 4903 | if (!vertical && !mPositions[i].mUnaddressable) { |
| 4904 | mPositions[i].mPosition.x += adjustment; |
| 4905 | } |
| 4906 | } |
| 4907 | // Fill in unspecified y position. |
| 4908 | if (!mPositions[i].IsYSpecified()) { |
| 4909 | nscoord d = charPositions[i].y - charPositions[i - 1].y; |
| 4910 | mPositions[i].mPosition.y = |
| 4911 | mPositions[i - 1].mPosition.y + |
| 4912 | presContext->AppUnitsToGfxUnits(d) * factor * yLengthAdjustFactor; |
| 4913 | if (vertical && !mPositions[i].mUnaddressable) { |
| 4914 | mPositions[i].mPosition.y += adjustment; |
| 4915 | } |
| 4916 | } |
| 4917 | // Add in dx/dy. |
| 4918 | if (i < deltas.Length()) { |
| 4919 | mPositions[i].mPosition += deltas[i]; |
| 4920 | } |
| 4921 | // Fill in unspecified rotation values. |
| 4922 | if (!mPositions[i].IsAngleSpecified()) { |
| 4923 | mPositions[i].mAngle = 0.0f; |
| 4924 | } |
| 4925 | } |
| 4926 | |
| 4927 | MOZ_ASSERT(mPositions.Length() == charPositions.Length())do { static_assert( mozilla::detail::AssertionConditionType< decltype(mPositions.Length() == charPositions.Length())>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(mPositions.Length() == charPositions.Length()))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("mPositions.Length() == charPositions.Length()" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 4927); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mPositions.Length() == charPositions.Length()" ")"); do { *((volatile int*)__null) = 4927; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4928 | |
| 4929 | AdjustChunksForLineBreaks(); |
| 4930 | AdjustPositionsForClusters(); |
| 4931 | DoAnchoring(); |
| 4932 | DoTextPathLayout(); |
| 4933 | } |
| 4934 | |
| 4935 | bool SVGTextFrame::ShouldRenderAsPath(nsTextFrame* aFrame, |
| 4936 | bool& aShouldPaintSVGGlyphs) { |
| 4937 | // Rendering to a clip path. |
| 4938 | if (HasAnyStateBits(NS_STATE_SVG_CLIPPATH_CHILD)) { |
| 4939 | aShouldPaintSVGGlyphs = false; |
| 4940 | return true; |
| 4941 | } |
| 4942 | |
| 4943 | aShouldPaintSVGGlyphs = true; |
| 4944 | |
| 4945 | const nsStyleSVG* style = aFrame->StyleSVG(); |
| 4946 | |
| 4947 | // Fill is a non-solid paint or is not opaque. |
| 4948 | if (!(style->mFill.kind.IsNone() || |
| 4949 | (style->mFill.kind.IsColor() && |
| 4950 | SVGUtils::GetOpacity(style->mFillOpacity, /*aContextPaint*/ nullptr) == |
| 4951 | 1.0f))) { |
| 4952 | return true; |
| 4953 | } |
| 4954 | |
| 4955 | // If we're going to need to draw a non-opaque shadow. |
| 4956 | // It's possible nsTextFrame will support non-opaque shadows in the future, |
| 4957 | // in which case this test can be removed. |
| 4958 | if (style->mFill.kind.IsColor() && aFrame->StyleText()->HasTextShadow() && |
| 4959 | NS_GET_A(style->mFill.kind.AsColor().CalcColor(*aFrame->Style()))((uint8_t)(((style->mFill.kind.AsColor().CalcColor(*aFrame ->Style())) >> 24) & 0xff)) != |
| 4960 | 0xFF) { |
| 4961 | return true; |
| 4962 | } |
| 4963 | |
| 4964 | // Text has a stroke. |
| 4965 | if (style->HasStroke()) { |
| 4966 | if (style->mStrokeWidth.IsContextValue()) { |
| 4967 | return true; |
| 4968 | } |
| 4969 | if (SVGContentUtils::CoordToFloat( |
| 4970 | static_cast<SVGElement*>(GetContent()), |
| 4971 | style->mStrokeWidth.AsLengthPercentage()) > 0) { |
| 4972 | return true; |
| 4973 | } |
| 4974 | } |
| 4975 | |
| 4976 | return false; |
| 4977 | } |
| 4978 | |
| 4979 | void SVGTextFrame::ScheduleReflowSVG() { |
| 4980 | if (HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 4981 | ScheduleReflowSVGNonDisplayText( |
| 4982 | IntrinsicDirty::FrameAncestorsAndDescendants); |
| 4983 | } else { |
| 4984 | SVGUtils::ScheduleReflowSVG(this); |
| 4985 | } |
| 4986 | } |
| 4987 | |
| 4988 | void SVGTextFrame::NotifyGlyphMetricsChange(bool aUpdateTextCorrespondence) { |
| 4989 | if (aUpdateTextCorrespondence) { |
| 4990 | AddStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY); |
| 4991 | } |
| 4992 | AddStateBits(NS_STATE_SVG_POSITIONING_DIRTY); |
| 4993 | nsLayoutUtils::PostRestyleEvent(mContent->AsElement(), RestyleHint{0}, |
| 4994 | nsChangeHint_InvalidateRenderingObservers); |
| 4995 | ScheduleReflowSVG(); |
| 4996 | } |
| 4997 | |
| 4998 | void SVGTextFrame::UpdateGlyphPositioning() { |
| 4999 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 5000 | if (!kid) { |
| 5001 | return; |
| 5002 | } |
| 5003 | |
| 5004 | if (HasAnyStateBits(NS_STATE_SVG_POSITIONING_DIRTY)) { |
| 5005 | DoGlyphPositioning(); |
| 5006 | } |
| 5007 | } |
| 5008 | |
| 5009 | void SVGTextFrame::MaybeResolveBidiForAnonymousBlockChild() { |
| 5010 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 5011 | |
| 5012 | if (kid && kid->HasAnyStateBits(NS_BLOCK_NEEDS_BIDI_RESOLUTION) && |
| 5013 | PresContext()->BidiEnabled()) { |
| 5014 | MOZ_ASSERT(static_cast<nsBlockFrame*>(do_QueryFrame(kid)),do { static_assert( mozilla::detail::AssertionConditionType< decltype(static_cast<nsBlockFrame*>(do_QueryFrame(kid)) )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(static_cast<nsBlockFrame*>(do_QueryFrame(kid)) ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "static_cast<nsBlockFrame*>(do_QueryFrame(kid))" " (" "Expect anonymous child to be an nsBlockFrame" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5015); AnnotateMozCrashReason("MOZ_ASSERT" "(" "static_cast<nsBlockFrame*>(do_QueryFrame(kid))" ") (" "Expect anonymous child to be an nsBlockFrame" ")"); do { *((volatile int*)__null) = 5015; __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
| 5015 | "Expect anonymous child to be an nsBlockFrame")do { static_assert( mozilla::detail::AssertionConditionType< decltype(static_cast<nsBlockFrame*>(do_QueryFrame(kid)) )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(static_cast<nsBlockFrame*>(do_QueryFrame(kid)) ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "static_cast<nsBlockFrame*>(do_QueryFrame(kid))" " (" "Expect anonymous child to be an nsBlockFrame" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5015); AnnotateMozCrashReason("MOZ_ASSERT" "(" "static_cast<nsBlockFrame*>(do_QueryFrame(kid))" ") (" "Expect anonymous child to be an nsBlockFrame" ")"); do { *((volatile int*)__null) = 5015; __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 5016 | nsBidiPresUtils::Resolve(static_cast<nsBlockFrame*>(kid)); |
| 5017 | } |
| 5018 | } |
| 5019 | |
| 5020 | void SVGTextFrame::MaybeReflowAnonymousBlockChild() { |
| 5021 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 5022 | if (!kid) { |
| 5023 | return; |
| 5024 | } |
| 5025 | |
| 5026 | NS_ASSERTION(!kid->HasAnyStateBits(NS_FRAME_IN_REFLOW),do { if (!(!kid->HasAnyStateBits(NS_FRAME_IN_REFLOW))) { NS_DebugBreak (NS_DEBUG_ASSERTION, "should not be in reflow when about to reflow again" , "!kid->HasAnyStateBits(NS_FRAME_IN_REFLOW)", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5027); MOZ_PretendNoReturn(); } } while (0) |
| 5027 | "should not be in reflow when about to reflow again")do { if (!(!kid->HasAnyStateBits(NS_FRAME_IN_REFLOW))) { NS_DebugBreak (NS_DEBUG_ASSERTION, "should not be in reflow when about to reflow again" , "!kid->HasAnyStateBits(NS_FRAME_IN_REFLOW)", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5027); MOZ_PretendNoReturn(); } } while (0); |
| 5028 | |
| 5029 | if (IsSubtreeDirty()) { |
| 5030 | if (HasAnyStateBits(NS_FRAME_IS_DIRTY)) { |
| 5031 | // If we require a full reflow, ensure our kid is marked fully dirty. |
| 5032 | // (Note that our anonymous nsBlockFrame is not an ISVGDisplayableFrame, |
| 5033 | // so even when we are called via our ReflowSVG this will not be done for |
| 5034 | // us by SVGDisplayContainerFrame::ReflowSVG.) |
| 5035 | kid->MarkSubtreeDirty(); |
| 5036 | } |
| 5037 | |
| 5038 | // The RecordCorrespondence and DoReflow calls can result in new text frames |
| 5039 | // being created (due to bidi resolution or reflow). We set this bit to |
| 5040 | // guard against unnecessarily calling back in to |
| 5041 | // ScheduleReflowSVGNonDisplayText from nsIFrame::DidSetComputedStyle on |
| 5042 | // those new text frames. |
| 5043 | AddStateBits(NS_STATE_SVG_TEXT_IN_REFLOW); |
| 5044 | |
| 5045 | TextNodeCorrespondenceRecorder::RecordCorrespondence(this); |
| 5046 | |
| 5047 | MOZ_ASSERT(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this),do { static_assert( mozilla::detail::AssertionConditionType< decltype(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" " (" "should be under ReflowSVG" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5048); AnnotateMozCrashReason("MOZ_ASSERT" "(" "SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" ") (" "should be under ReflowSVG" ")"); do { *((volatile int *)__null) = 5048; __attribute__((nomerge)) ::abort(); } while (false); } } while (false) |
| 5048 | "should be under ReflowSVG")do { static_assert( mozilla::detail::AssertionConditionType< decltype(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" " (" "should be under ReflowSVG" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5048); AnnotateMozCrashReason("MOZ_ASSERT" "(" "SVGUtils::AnyOuterSVGIsCallingReflowSVG(this)" ") (" "should be under ReflowSVG" ")"); do { *((volatile int *)__null) = 5048; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 5049 | nsPresContext::InterruptPreventer noInterrupts(PresContext()); |
| 5050 | DoReflow(); |
| 5051 | |
| 5052 | RemoveStateBits(NS_STATE_SVG_TEXT_IN_REFLOW); |
| 5053 | } |
| 5054 | } |
| 5055 | |
| 5056 | void SVGTextFrame::DoReflow() { |
| 5057 | MOZ_ASSERT(HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW))do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5057); AnnotateMozCrashReason("MOZ_ASSERT" "(" "HasAnyStateBits(NS_STATE_SVG_TEXT_IN_REFLOW)" ")"); do { *((volatile int*)__null) = 5057; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5058 | |
| 5059 | // Since we are going to reflow the anonymous block frame, we will |
| 5060 | // need to update mPositions. |
| 5061 | // We also mark our text correspondence as dirty since we can end up needing |
| 5062 | // reflow in ways that do not set NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY. |
| 5063 | // (We'd then fail the "expected a TextNodeCorrespondenceProperty" assertion |
| 5064 | // when UpdateGlyphPositioning() is called after we return.) |
| 5065 | AddStateBits(NS_STATE_SVG_TEXT_CORRESPONDENCE_DIRTY | |
| 5066 | NS_STATE_SVG_POSITIONING_DIRTY); |
| 5067 | |
| 5068 | if (HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 5069 | // Normally, these dirty flags would be cleared in ReflowSVG(), but that |
| 5070 | // doesn't get called for non-display frames. We don't want to reflow our |
| 5071 | // descendants every time SVGTextFrame::PaintSVG makes sure that we have |
| 5072 | // valid positions by calling UpdateGlyphPositioning(), so we need to clear |
| 5073 | // these dirty bits. Note that this also breaks an invalidation loop where |
| 5074 | // our descendants invalidate as they reflow, which invalidates rendering |
| 5075 | // observers, which reschedules the frame that is currently painting by |
| 5076 | // referencing us to paint again. See bug 839958 comment 7. Hopefully we |
| 5077 | // will break that loop more convincingly at some point. |
| 5078 | RemoveStateBits(NS_FRAME_IS_DIRTY | NS_FRAME_HAS_DIRTY_CHILDREN); |
| 5079 | } |
| 5080 | |
| 5081 | nsPresContext* presContext = PresContext(); |
| 5082 | nsIFrame* kid = PrincipalChildList().FirstChild(); |
| 5083 | if (!kid) { |
| 5084 | return; |
| 5085 | } |
| 5086 | |
| 5087 | UniquePtr<gfxContext> renderingContext = |
| 5088 | presContext->PresShell()->CreateReferenceRenderingContext(); |
| 5089 | |
| 5090 | if (UpdateFontSizeScaleFactor()) { |
| 5091 | // If the font size scale factor changed, we need the block to report |
| 5092 | // an updated preferred width. |
| 5093 | kid->MarkIntrinsicISizesDirty(); |
| 5094 | } |
| 5095 | |
| 5096 | nscoord inlineSize = kid->GetPrefISize(renderingContext.get()); |
| 5097 | WritingMode wm = kid->GetWritingMode(); |
| 5098 | ReflowInput reflowInput(presContext, kid, renderingContext.get(), |
| 5099 | LogicalSize(wm, inlineSize, NS_UNCONSTRAINEDSIZE)); |
| 5100 | ReflowOutput desiredSize(reflowInput); |
| 5101 | nsReflowStatus status; |
| 5102 | |
| 5103 | NS_ASSERTION(do { if (!(reflowInput.ComputedPhysicalBorderPadding() == nsMargin (0, 0, 0, 0) && reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "style system should ensure that :-moz-svg-text " "does not get styled", "reflowInput.ComputedPhysicalBorderPadding() == nsMargin(0, 0, 0, 0) && reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0)" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5107); MOZ_PretendNoReturn(); } } while (0) |
| 5104 | reflowInput.ComputedPhysicalBorderPadding() == nsMargin(0, 0, 0, 0) &&do { if (!(reflowInput.ComputedPhysicalBorderPadding() == nsMargin (0, 0, 0, 0) && reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "style system should ensure that :-moz-svg-text " "does not get styled", "reflowInput.ComputedPhysicalBorderPadding() == nsMargin(0, 0, 0, 0) && reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0)" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5107); MOZ_PretendNoReturn(); } } while (0) |
| 5105 | reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0),do { if (!(reflowInput.ComputedPhysicalBorderPadding() == nsMargin (0, 0, 0, 0) && reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "style system should ensure that :-moz-svg-text " "does not get styled", "reflowInput.ComputedPhysicalBorderPadding() == nsMargin(0, 0, 0, 0) && reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0)" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5107); MOZ_PretendNoReturn(); } } while (0) |
| 5106 | "style system should ensure that :-moz-svg-text "do { if (!(reflowInput.ComputedPhysicalBorderPadding() == nsMargin (0, 0, 0, 0) && reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "style system should ensure that :-moz-svg-text " "does not get styled", "reflowInput.ComputedPhysicalBorderPadding() == nsMargin(0, 0, 0, 0) && reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0)" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5107); MOZ_PretendNoReturn(); } } while (0) |
| 5107 | "does not get styled")do { if (!(reflowInput.ComputedPhysicalBorderPadding() == nsMargin (0, 0, 0, 0) && reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0))) { NS_DebugBreak(NS_DEBUG_ASSERTION, "style system should ensure that :-moz-svg-text " "does not get styled", "reflowInput.ComputedPhysicalBorderPadding() == nsMargin(0, 0, 0, 0) && reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0)" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5107); MOZ_PretendNoReturn(); } } while (0); |
| 5108 | |
| 5109 | kid->Reflow(presContext, desiredSize, reflowInput, status); |
| 5110 | kid->DidReflow(presContext, &reflowInput); |
| 5111 | kid->SetSize(wm, desiredSize.Size(wm)); |
| 5112 | } |
| 5113 | |
| 5114 | // Usable font size range in devpixels / user-units |
| 5115 | #define CLAMP_MIN_SIZE8.0 8.0 |
| 5116 | #define CLAMP_MAX_SIZE200.0 200.0 |
| 5117 | #define PRECISE_SIZE200.0 200.0 |
| 5118 | |
| 5119 | bool SVGTextFrame::UpdateFontSizeScaleFactor() { |
| 5120 | double oldFontSizeScaleFactor = mFontSizeScaleFactor; |
| 5121 | |
| 5122 | nsPresContext* presContext = PresContext(); |
| 5123 | |
| 5124 | bool geometricPrecision = false; |
| 5125 | CSSCoord min = std::numeric_limits<float>::max(); |
| 5126 | CSSCoord max = std::numeric_limits<float>::min(); |
| 5127 | bool anyText = false; |
| 5128 | |
| 5129 | // Find the minimum and maximum font sizes used over all the |
| 5130 | // nsTextFrames. |
| 5131 | TextFrameIterator it(this); |
| 5132 | nsTextFrame* f = it.Current(); |
| 5133 | while (f) { |
| 5134 | if (!geometricPrecision) { |
| 5135 | // Unfortunately we can't treat text-rendering:geometricPrecision |
| 5136 | // separately for each text frame. |
| 5137 | geometricPrecision = f->StyleText()->mTextRendering == |
| 5138 | StyleTextRendering::Geometricprecision; |
| 5139 | } |
| 5140 | const auto& fontSize = f->StyleFont()->mFont.size; |
| 5141 | if (!fontSize.IsZero()) { |
| 5142 | min = std::min(min, fontSize.ToCSSPixels()); |
| 5143 | max = std::max(max, fontSize.ToCSSPixels()); |
| 5144 | anyText = true; |
| 5145 | } |
| 5146 | f = it.Next(); |
| 5147 | } |
| 5148 | |
| 5149 | if (!anyText) { |
| 5150 | // No text, so no need for scaling. |
| 5151 | mFontSizeScaleFactor = 1.0; |
| 5152 | return mFontSizeScaleFactor != oldFontSizeScaleFactor; |
| 5153 | } |
| 5154 | |
| 5155 | if (geometricPrecision) { |
| 5156 | // We want to ensure minSize is scaled to PRECISE_SIZE. |
| 5157 | mFontSizeScaleFactor = PRECISE_SIZE200.0 / min; |
| 5158 | return mFontSizeScaleFactor != oldFontSizeScaleFactor; |
| 5159 | } |
| 5160 | |
| 5161 | // When we are non-display, we could be painted in different coordinate |
| 5162 | // spaces, and we don't want to have to reflow for each of these. We |
| 5163 | // just assume that the context scale is 1.0 for them all, so we don't |
| 5164 | // get stuck with a font size scale factor based on whichever referencing |
| 5165 | // frame happens to reflow first. |
| 5166 | double contextScale = 1.0; |
| 5167 | if (!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) { |
| 5168 | gfxMatrix m(GetCanvasTM()); |
| 5169 | if (!m.IsSingular()) { |
| 5170 | contextScale = GetContextScale(m); |
| 5171 | if (!std::isfinite(contextScale)) { |
| 5172 | contextScale = 1.0f; |
| 5173 | } |
| 5174 | } |
| 5175 | } |
| 5176 | mLastContextScale = contextScale; |
| 5177 | |
| 5178 | // But we want to ignore any scaling required due to HiDPI displays, since |
| 5179 | // regular CSS text frames will still create text runs using the font size |
| 5180 | // in CSS pixels, and we want SVG text to have the same rendering as HTML |
| 5181 | // text for regular font sizes. |
| 5182 | float cssPxPerDevPx = nsPresContext::AppUnitsToFloatCSSPixels( |
| 5183 | presContext->AppUnitsPerDevPixel()); |
| 5184 | contextScale *= cssPxPerDevPx; |
| 5185 | |
| 5186 | double minTextRunSize = min * contextScale; |
| 5187 | double maxTextRunSize = max * contextScale; |
| 5188 | |
| 5189 | if (minTextRunSize >= CLAMP_MIN_SIZE8.0 && maxTextRunSize <= CLAMP_MAX_SIZE200.0) { |
| 5190 | // We are already in the ideal font size range for all text frames, |
| 5191 | // so we only have to take into account the contextScale. |
| 5192 | mFontSizeScaleFactor = contextScale; |
| 5193 | } else if (max / min > CLAMP_MAX_SIZE200.0 / CLAMP_MIN_SIZE8.0) { |
| 5194 | // We can't scale the font sizes so that all of the text frames lie |
| 5195 | // within our ideal font size range. |
| 5196 | // Heuristically, if the maxTextRunSize is within the CLAMP_MAX_SIZE |
| 5197 | // as a reasonable value, it's likely to be the user's intent to |
| 5198 | // get a valid font for the maxTextRunSize one, we should honor it. |
| 5199 | // The same for minTextRunSize. |
| 5200 | if (maxTextRunSize <= CLAMP_MAX_SIZE200.0) { |
| 5201 | mFontSizeScaleFactor = CLAMP_MAX_SIZE200.0 / max; |
| 5202 | } else if (minTextRunSize >= CLAMP_MIN_SIZE8.0) { |
| 5203 | mFontSizeScaleFactor = CLAMP_MIN_SIZE8.0 / min; |
| 5204 | } else { |
| 5205 | // So maxTextRunSize is too big, minTextRunSize is too small, |
| 5206 | // we can't really do anything for this case, just leave it as is. |
| 5207 | mFontSizeScaleFactor = contextScale; |
| 5208 | } |
| 5209 | } else if (minTextRunSize < CLAMP_MIN_SIZE8.0) { |
| 5210 | mFontSizeScaleFactor = CLAMP_MIN_SIZE8.0 / min; |
| 5211 | } else { |
| 5212 | mFontSizeScaleFactor = CLAMP_MAX_SIZE200.0 / max; |
| 5213 | } |
| 5214 | |
| 5215 | return mFontSizeScaleFactor != oldFontSizeScaleFactor; |
| 5216 | } |
| 5217 | |
| 5218 | double SVGTextFrame::GetFontSizeScaleFactor() const { |
| 5219 | return mFontSizeScaleFactor; |
| 5220 | } |
| 5221 | |
| 5222 | /** |
| 5223 | * Take aPoint, which is in the <text> element's user space, and convert |
| 5224 | * it to the appropriate frame user space of aChildFrame according to |
| 5225 | * which rendered run the point hits. |
| 5226 | */ |
| 5227 | Point SVGTextFrame::TransformFramePointToTextChild( |
| 5228 | const Point& aPoint, const nsIFrame* aChildFrame) { |
| 5229 | NS_ASSERTION(aChildFrame && nsLayoutUtils::GetClosestFrameOfType(do { if (!(aChildFrame && nsLayoutUtils::GetClosestFrameOfType ( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "aChildFrame must be a descendant of this frame" , "aChildFrame && nsLayoutUtils::GetClosestFrameOfType( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5232); MOZ_PretendNoReturn(); } } while (0) |
| 5230 | aChildFrame->GetParent(),do { if (!(aChildFrame && nsLayoutUtils::GetClosestFrameOfType ( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "aChildFrame must be a descendant of this frame" , "aChildFrame && nsLayoutUtils::GetClosestFrameOfType( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5232); MOZ_PretendNoReturn(); } } while (0) |
| 5231 | LayoutFrameType::SVGText) == this,do { if (!(aChildFrame && nsLayoutUtils::GetClosestFrameOfType ( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "aChildFrame must be a descendant of this frame" , "aChildFrame && nsLayoutUtils::GetClosestFrameOfType( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5232); MOZ_PretendNoReturn(); } } while (0) |
| 5232 | "aChildFrame must be a descendant of this frame")do { if (!(aChildFrame && nsLayoutUtils::GetClosestFrameOfType ( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "aChildFrame must be a descendant of this frame" , "aChildFrame && nsLayoutUtils::GetClosestFrameOfType( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5232); MOZ_PretendNoReturn(); } } while (0); |
| 5233 | |
| 5234 | UpdateGlyphPositioning(); |
| 5235 | |
| 5236 | nsPresContext* presContext = PresContext(); |
| 5237 | |
| 5238 | // Add in the mRect offset to aPoint, as that will have been taken into |
| 5239 | // account when transforming the point from the ancestor frame down |
| 5240 | // to this one. |
| 5241 | float cssPxPerDevPx = nsPresContext::AppUnitsToFloatCSSPixels( |
| 5242 | presContext->AppUnitsPerDevPixel()); |
| 5243 | float factor = AppUnitsPerCSSPixel(); |
| 5244 | Point framePosition(NSAppUnitsToFloatPixels(mRect.x, factor), |
| 5245 | NSAppUnitsToFloatPixels(mRect.y, factor)); |
| 5246 | Point pointInUserSpace = aPoint * cssPxPerDevPx + framePosition; |
| 5247 | |
| 5248 | // Find the closest rendered run for the text frames beneath aChildFrame. |
| 5249 | TextRenderedRunIterator it(this, TextRenderedRunIterator::eAllFrames, |
| 5250 | aChildFrame); |
| 5251 | TextRenderedRun hit; |
| 5252 | gfxPoint pointInRun; |
| 5253 | nscoord dx = nscoord_MAX; |
| 5254 | nscoord dy = nscoord_MAX; |
| 5255 | for (TextRenderedRun run = it.Current(); run.mFrame; run = it.Next()) { |
| 5256 | uint32_t flags = TextRenderedRun::eIncludeFill | |
| 5257 | TextRenderedRun::eIncludeStroke | |
| 5258 | TextRenderedRun::eNoHorizontalOverflow; |
| 5259 | gfxRect runRect = |
| 5260 | run.GetRunUserSpaceRect(presContext, flags).ToThebesRect(); |
| 5261 | |
| 5262 | gfxMatrix m = run.GetTransformFromRunUserSpaceToUserSpace(presContext); |
| 5263 | if (!m.Invert()) { |
| 5264 | return aPoint; |
| 5265 | } |
| 5266 | gfxPoint pointInRunUserSpace = |
| 5267 | m.TransformPoint(ThebesPoint(pointInUserSpace)); |
| 5268 | |
| 5269 | if (Inside(runRect, pointInRunUserSpace)) { |
| 5270 | // The point was inside the rendered run's rect, so we choose it. |
| 5271 | dx = 0; |
| 5272 | dy = 0; |
| 5273 | pointInRun = pointInRunUserSpace; |
| 5274 | hit = run; |
| 5275 | } else if (nsLayoutUtils::PointIsCloserToRect(pointInRunUserSpace, runRect, |
| 5276 | dx, dy)) { |
| 5277 | // The point was closer to this rendered run's rect than any others |
| 5278 | // we've seen so far. |
| 5279 | pointInRun.x = |
| 5280 | clamped(pointInRunUserSpace.x.value, runRect.X(), runRect.XMost()); |
| 5281 | pointInRun.y = |
| 5282 | clamped(pointInRunUserSpace.y.value, runRect.Y(), runRect.YMost()); |
| 5283 | hit = run; |
| 5284 | } |
| 5285 | } |
| 5286 | |
| 5287 | if (!hit.mFrame) { |
| 5288 | // We didn't find any rendered runs for the frame. |
| 5289 | return aPoint; |
| 5290 | } |
| 5291 | |
| 5292 | // Return the point in user units relative to the nsTextFrame, |
| 5293 | // but taking into account mFontSizeScaleFactor. |
| 5294 | gfxMatrix m = hit.GetTransformFromRunUserSpaceToFrameUserSpace(presContext); |
| 5295 | m.PreScale(mFontSizeScaleFactor, mFontSizeScaleFactor); |
| 5296 | return ToPoint(m.TransformPoint(pointInRun) / cssPxPerDevPx); |
| 5297 | } |
| 5298 | |
| 5299 | /** |
| 5300 | * For each rendered run beneath aChildFrame, translate aRect from |
| 5301 | * aChildFrame to the run's text frame, transform it then into |
| 5302 | * the run's frame user space, intersect it with the run's |
| 5303 | * frame user space rect, then transform it up to user space. |
| 5304 | * The result is the union of all of these. |
| 5305 | */ |
| 5306 | gfxRect SVGTextFrame::TransformFrameRectFromTextChild( |
| 5307 | const nsRect& aRect, const nsIFrame* aChildFrame) { |
| 5308 | NS_ASSERTION(aChildFrame && nsLayoutUtils::GetClosestFrameOfType(do { if (!(aChildFrame && nsLayoutUtils::GetClosestFrameOfType ( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "aChildFrame must be a descendant of this frame" , "aChildFrame && nsLayoutUtils::GetClosestFrameOfType( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5311); MOZ_PretendNoReturn(); } } while (0) |
| 5309 | aChildFrame->GetParent(),do { if (!(aChildFrame && nsLayoutUtils::GetClosestFrameOfType ( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "aChildFrame must be a descendant of this frame" , "aChildFrame && nsLayoutUtils::GetClosestFrameOfType( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5311); MOZ_PretendNoReturn(); } } while (0) |
| 5310 | LayoutFrameType::SVGText) == this,do { if (!(aChildFrame && nsLayoutUtils::GetClosestFrameOfType ( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "aChildFrame must be a descendant of this frame" , "aChildFrame && nsLayoutUtils::GetClosestFrameOfType( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5311); MOZ_PretendNoReturn(); } } while (0) |
| 5311 | "aChildFrame must be a descendant of this frame")do { if (!(aChildFrame && nsLayoutUtils::GetClosestFrameOfType ( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "aChildFrame must be a descendant of this frame" , "aChildFrame && nsLayoutUtils::GetClosestFrameOfType( aChildFrame->GetParent(), LayoutFrameType::SVGText) == this" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5311); MOZ_PretendNoReturn(); } } while (0); |
| 5312 | |
| 5313 | UpdateGlyphPositioning(); |
| 5314 | |
| 5315 | nsPresContext* presContext = PresContext(); |
| 5316 | |
| 5317 | gfxRect result; |
| 5318 | TextRenderedRunIterator it(this, TextRenderedRunIterator::eAllFrames, |
| 5319 | aChildFrame); |
| 5320 | for (TextRenderedRun run = it.Current(); run.mFrame; run = it.Next()) { |
| 5321 | // First, translate aRect from aChildFrame to this run's frame. |
| 5322 | nsRect rectInTextFrame = aRect + aChildFrame->GetOffsetTo(run.mFrame); |
| 5323 | |
| 5324 | // Scale it into frame user space. |
| 5325 | gfxRect rectInFrameUserSpace = AppUnitsToFloatCSSPixels( |
| 5326 | gfxRect(rectInTextFrame.x, rectInTextFrame.y, rectInTextFrame.width, |
| 5327 | rectInTextFrame.height), |
| 5328 | presContext); |
| 5329 | |
| 5330 | // Intersect it with the run. |
| 5331 | uint32_t flags = |
| 5332 | TextRenderedRun::eIncludeFill | TextRenderedRun::eIncludeStroke; |
| 5333 | |
| 5334 | if (rectInFrameUserSpace.IntersectRect( |
| 5335 | rectInFrameUserSpace, |
| 5336 | run.GetFrameUserSpaceRect(presContext, flags).ToThebesRect())) { |
| 5337 | // Transform it up to user space of the <text> |
| 5338 | gfxMatrix m = run.GetTransformFromRunUserSpaceToUserSpace(presContext); |
| 5339 | gfxRect rectInUserSpace = m.TransformRect(rectInFrameUserSpace); |
| 5340 | |
| 5341 | // Union it into the result. |
| 5342 | result.UnionRect(result, rectInUserSpace); |
| 5343 | } |
| 5344 | } |
| 5345 | |
| 5346 | // Subtract the mRect offset from the result, as our user space for |
| 5347 | // this frame is relative to the top-left of mRect. |
| 5348 | float factor = AppUnitsPerCSSPixel(); |
| 5349 | gfxPoint framePosition(NSAppUnitsToFloatPixels(mRect.x, factor), |
| 5350 | NSAppUnitsToFloatPixels(mRect.y, factor)); |
| 5351 | |
| 5352 | return result - framePosition; |
| 5353 | } |
| 5354 | |
| 5355 | Rect SVGTextFrame::TransformFrameRectFromTextChild( |
| 5356 | const Rect& aRect, const nsIFrame* aChildFrame) { |
| 5357 | nscoord appUnitsPerDevPixel = PresContext()->AppUnitsPerDevPixel(); |
| 5358 | nsRect r = LayoutDevicePixel::ToAppUnits( |
| 5359 | LayoutDeviceRect::FromUnknownRect(aRect), appUnitsPerDevPixel); |
| 5360 | gfxRect resultCssUnits = TransformFrameRectFromTextChild(r, aChildFrame); |
| 5361 | float devPixelPerCSSPixel = |
| 5362 | float(AppUnitsPerCSSPixel()) / appUnitsPerDevPixel; |
| 5363 | resultCssUnits.Scale(devPixelPerCSSPixel); |
| 5364 | return ToRect(resultCssUnits); |
| 5365 | } |
| 5366 | |
| 5367 | Point SVGTextFrame::TransformFramePointFromTextChild( |
| 5368 | const Point& aPoint, const nsIFrame* aChildFrame) { |
| 5369 | return TransformFrameRectFromTextChild(Rect(aPoint, Size(1, 1)), aChildFrame) |
| 5370 | .TopLeft(); |
| 5371 | } |
| 5372 | |
| 5373 | void SVGTextFrame::AppendDirectlyOwnedAnonBoxes( |
| 5374 | nsTArray<OwnedAnonBox>& aResult) { |
| 5375 | MOZ_ASSERT(PrincipalChildList().FirstChild(), "Must have our anon box")do { static_assert( mozilla::detail::AssertionConditionType< decltype(PrincipalChildList().FirstChild())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(PrincipalChildList().FirstChild ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("PrincipalChildList().FirstChild()" " (" "Must have our anon box" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/svg/SVGTextFrame.cpp" , 5375); AnnotateMozCrashReason("MOZ_ASSERT" "(" "PrincipalChildList().FirstChild()" ") (" "Must have our anon box" ")"); do { *((volatile int*)__null ) = 5375; __attribute__((nomerge)) ::abort(); } while (false) ; } } while (false); |
| 5376 | aResult.AppendElement(OwnedAnonBox(PrincipalChildList().FirstChild())); |
| 5377 | } |
| 5378 | |
| 5379 | } // namespace mozilla |