File: | var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp |
Warning: | line 253, column 9 Value stored to 'subdocRootFrame' 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 | /* |
8 | * rendering object for replaced elements that contain a document, such |
9 | * as <frame>, <iframe>, and some <object>s |
10 | */ |
11 | |
12 | #include "nsSubDocumentFrame.h" |
13 | |
14 | #include "mozilla/ComputedStyleInlines.h" |
15 | #include "mozilla/Preferences.h" |
16 | #include "mozilla/PresShell.h" |
17 | #include "mozilla/ScrollContainerFrame.h" |
18 | #include "mozilla/StaticPrefs_layout.h" |
19 | #include "mozilla/Unused.h" |
20 | #include "mozilla/dom/Document.h" |
21 | #include "mozilla/dom/HTMLFrameElement.h" |
22 | #include "mozilla/dom/ImageDocument.h" |
23 | #include "mozilla/dom/BrowserParent.h" |
24 | |
25 | #include "nsCOMPtr.h" |
26 | #include "nsGenericHTMLElement.h" |
27 | #include "nsGenericHTMLFrameElement.h" |
28 | #include "nsAttrValueInlines.h" |
29 | #include "nsIDocShell.h" |
30 | #include "nsIDocumentViewer.h" |
31 | #include "nsIContentInlines.h" |
32 | #include "nsPresContext.h" |
33 | #include "nsView.h" |
34 | #include "nsViewManager.h" |
35 | #include "nsGkAtoms.h" |
36 | #include "nsStyleConsts.h" |
37 | #include "nsStyleStruct.h" |
38 | #include "nsStyleStructInlines.h" |
39 | #include "nsFrameSetFrame.h" |
40 | #include "nsNameSpaceManager.h" |
41 | #include "nsDisplayList.h" |
42 | #include "nsIObjectLoadingContent.h" |
43 | #include "nsLayoutUtils.h" |
44 | #include "nsContentUtils.h" |
45 | #include "nsServiceManagerUtils.h" |
46 | #include "nsQueryObject.h" |
47 | #include "RetainedDisplayListBuilder.h" |
48 | #include "nsObjectLoadingContent.h" |
49 | |
50 | #include "mozilla/layers/WebRenderUserData.h" |
51 | #include "mozilla/layers/WebRenderScrollData.h" |
52 | #include "mozilla/layers/RenderRootStateManager.h" |
53 | #include "mozilla/layers/StackingContextHelper.h" // for StackingContextHelper |
54 | #include "mozilla/ProfilerLabels.h" |
55 | |
56 | using namespace mozilla; |
57 | using namespace mozilla::dom; |
58 | using namespace mozilla::gfx; |
59 | using namespace mozilla::layers; |
60 | |
61 | static Document* GetDocumentFromView(nsView* aView) { |
62 | MOZ_ASSERT(aView, "null view")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aView)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(aView))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("aView" " (" "null view" ")" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 62); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aView" ") (" "null view" ")"); do { *((volatile int*)__null) = 62; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
63 | |
64 | nsViewManager* vm = aView->GetViewManager(); |
65 | PresShell* presShell = vm ? vm->GetPresShell() : nullptr; |
66 | return presShell ? presShell->GetDocument() : nullptr; |
67 | } |
68 | |
69 | static void PropagateIsUnderHiddenEmbedderElement(nsFrameLoader* aFrameLoader, |
70 | bool aValue) { |
71 | if (!aFrameLoader) { |
72 | return; |
73 | } |
74 | |
75 | if (BrowsingContext* bc = aFrameLoader->GetExtantBrowsingContext()) { |
76 | if (bc->IsUnderHiddenEmbedderElement() != aValue) { |
77 | Unused << bc->SetIsUnderHiddenEmbedderElement(aValue); |
78 | } |
79 | } |
80 | } |
81 | |
82 | nsSubDocumentFrame::nsSubDocumentFrame(ComputedStyle* aStyle, |
83 | nsPresContext* aPresContext) |
84 | : nsAtomicContainerFrame(aStyle, aPresContext, kClassID), |
85 | mOuterView(nullptr), |
86 | mInnerView(nullptr), |
87 | mIsInline(false), |
88 | mPostedReflowCallback(false), |
89 | mDidCreateDoc(false), |
90 | mCallingShow(false), |
91 | mIsInObjectOrEmbed(false) {} |
92 | |
93 | #ifdef ACCESSIBILITY1 |
94 | a11y::AccType nsSubDocumentFrame::AccessibleType() { |
95 | return a11y::eOuterDocType; |
96 | } |
97 | #endif |
98 | |
99 | NS_QUERYFRAME_HEAD(nsSubDocumentFrame)void* nsSubDocumentFrame ::QueryFrame(FrameIID id) const { switch (id) { |
100 | NS_QUERYFRAME_ENTRY(nsSubDocumentFrame)case nsSubDocumentFrame ::kFrameIID: { static_assert( std::is_same_v <nsSubDocumentFrame, nsSubDocumentFrame ::Has_NS_DECL_QUERYFRAME_TARGET >, "nsSubDocumentFrame" " must declare itself as a queryframe target" ); return const_cast<nsSubDocumentFrame*>(static_cast< const nsSubDocumentFrame*>(this)); } |
101 | NS_QUERYFRAME_TAIL_INHERITING(nsAtomicContainerFrame)default: break; } return nsAtomicContainerFrame ::QueryFrame( id); } |
102 | |
103 | class AsyncFrameInit : public Runnable { |
104 | public: |
105 | explicit AsyncFrameInit(nsIFrame* aFrame) |
106 | : mozilla::Runnable("AsyncFrameInit"), mFrame(aFrame) {} |
107 | NS_IMETHODvirtual nsresult Run() override { |
108 | AUTO_PROFILER_LABEL("AsyncFrameInit::Run", OTHER)mozilla::AutoProfilerLabel raiiObject108( "AsyncFrameInit::Run" , nullptr, JS::ProfilingCategoryPair::OTHER); |
109 | if (mFrame.IsAlive()) { |
110 | static_cast<nsSubDocumentFrame*>(mFrame.GetFrame())->ShowViewer(); |
111 | } |
112 | return NS_OK; |
113 | } |
114 | |
115 | private: |
116 | WeakFrame mFrame; |
117 | }; |
118 | |
119 | void nsSubDocumentFrame::Init(nsIContent* aContent, nsContainerFrame* aParent, |
120 | nsIFrame* aPrevInFlow) { |
121 | MOZ_ASSERT(aContent)do { static_assert( mozilla::detail::AssertionConditionType< decltype(aContent)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aContent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aContent", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 121); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aContent" ")" ); do { *((volatile int*)__null) = 121; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
122 | // determine if we are a <frame> or <iframe> |
123 | mIsInline = !aContent->IsHTMLElement(nsGkAtoms::frame); |
124 | |
125 | nsAtomicContainerFrame::Init(aContent, aParent, aPrevInFlow); |
126 | |
127 | // CreateView() creates this frame's view, stored in mOuterView. It needs to |
128 | // be created first since it's the parent of the inner view, stored in |
129 | // mInnerView. |
130 | CreateView(); |
131 | EnsureInnerView(); |
132 | |
133 | // Set the primary frame now so that nsDocumentViewer::FindContainerView |
134 | // called from within EndSwapDocShellsForViews below can find it if needed. |
135 | aContent->SetPrimaryFrame(this); |
136 | |
137 | // If we have a detached subdoc's root view on our frame loader, re-insert it |
138 | // into the view tree. This happens when we've been reframed, and ensures the |
139 | // presentation persists across reframes. |
140 | if (RefPtr<nsFrameLoader> frameloader = FrameLoader()) { |
141 | bool hadFrame = false; |
142 | nsIFrame* detachedFrame = frameloader->GetDetachedSubdocFrame(&hadFrame); |
143 | frameloader->SetDetachedSubdocFrame(nullptr); |
144 | nsView* detachedView = detachedFrame ? detachedFrame->GetView() : nullptr; |
145 | if (detachedView) { |
146 | // Restore stashed presentation. |
147 | InsertViewsInReverseOrder(detachedView, mInnerView); |
148 | EndSwapDocShellsForViews(mInnerView->GetFirstChild()); |
149 | } else if (hadFrame) { |
150 | // Presentation is for a different document, don't restore it. |
151 | frameloader->Hide(); |
152 | } |
153 | } |
154 | |
155 | // NOTE: The frame loader might not yet be initialized yet. If it's not, the |
156 | // call in ShowViewer() should pick things up. |
157 | UpdateEmbeddedBrowsingContextDependentData(); |
158 | nsContentUtils::AddScriptRunner(new AsyncFrameInit(this)); |
159 | } |
160 | |
161 | void nsSubDocumentFrame::UpdateEmbeddedBrowsingContextDependentData() { |
162 | if (!mFrameLoader) { |
163 | return; |
164 | } |
165 | BrowsingContext* bc = mFrameLoader->GetExtantBrowsingContext(); |
166 | if (!bc) { |
167 | return; |
168 | } |
169 | mIsInObjectOrEmbed = bc->IsEmbedderTypeObjectOrEmbed(); |
170 | MaybeUpdateRemoteStyle(); |
171 | MaybeUpdateEmbedderColorScheme(); |
172 | PropagateIsUnderHiddenEmbedderElement( |
173 | PresShell()->IsUnderHiddenEmbedderElement() || |
174 | !StyleVisibility()->IsVisible()); |
175 | } |
176 | |
177 | void nsSubDocumentFrame::PropagateIsUnderHiddenEmbedderElement(bool aValue) { |
178 | ::PropagateIsUnderHiddenEmbedderElement(mFrameLoader, aValue); |
179 | } |
180 | |
181 | void nsSubDocumentFrame::ShowViewer() { |
182 | if (mCallingShow) { |
183 | return; |
184 | } |
185 | |
186 | RefPtr<nsFrameLoader> frameloader = FrameLoader(); |
187 | if (!frameloader || frameloader->IsDead()) { |
188 | return; |
189 | } |
190 | |
191 | if (!frameloader->IsRemoteFrame() && !PresContext()->IsDynamic()) { |
192 | // We let the printing code take care of loading the document and |
193 | // initializing the shell; just create the inner view for it to use. |
194 | (void)EnsureInnerView(); |
195 | } else { |
196 | AutoWeakFrame weakThis(this); |
197 | mCallingShow = true; |
198 | bool didCreateDoc = frameloader->Show(this); |
199 | if (!weakThis.IsAlive()) { |
200 | return; |
201 | } |
202 | mCallingShow = false; |
203 | mDidCreateDoc = didCreateDoc; |
204 | if (!HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) { |
205 | frameloader->UpdatePositionAndSize(this); |
206 | } |
207 | if (!weakThis.IsAlive()) { |
208 | return; |
209 | } |
210 | UpdateEmbeddedBrowsingContextDependentData(); |
211 | InvalidateFrame(); |
212 | } |
213 | } |
214 | |
215 | nsIFrame* nsSubDocumentFrame::GetSubdocumentRootFrame() { |
216 | if (!mInnerView) return nullptr; |
217 | nsView* subdocView = mInnerView->GetFirstChild(); |
218 | return subdocView ? subdocView->GetFrame() : nullptr; |
219 | } |
220 | |
221 | mozilla::PresShell* nsSubDocumentFrame::GetSubdocumentPresShellForPainting( |
222 | uint32_t aFlags) { |
223 | if (!mInnerView) return nullptr; |
224 | |
225 | nsView* subdocView = mInnerView->GetFirstChild(); |
226 | if (!subdocView) return nullptr; |
227 | |
228 | mozilla::PresShell* presShell = nullptr; |
229 | |
230 | nsIFrame* subdocRootFrame = subdocView->GetFrame(); |
231 | if (subdocRootFrame) { |
232 | presShell = subdocRootFrame->PresShell(); |
233 | } |
234 | |
235 | // If painting is suppressed in the presshell, we try to look for a better |
236 | // presshell to use. |
237 | if (!presShell || (presShell->IsPaintingSuppressed() && |
238 | !(aFlags & IGNORE_PAINT_SUPPRESSION))) { |
239 | // During page transition mInnerView will sometimes have two children, the |
240 | // first being the new page that may not have any frame, and the second |
241 | // being the old page that will probably have a frame. |
242 | nsView* nextView = subdocView->GetNextSibling(); |
243 | nsIFrame* frame = nullptr; |
244 | if (nextView) { |
245 | frame = nextView->GetFrame(); |
246 | } |
247 | if (frame) { |
248 | mozilla::PresShell* presShellForNextView = frame->PresShell(); |
249 | if (!presShell || (presShellForNextView && |
250 | !presShellForNextView->IsPaintingSuppressed() && |
251 | StaticPrefs::layout_show_previous_page())) { |
252 | subdocView = nextView; |
253 | subdocRootFrame = frame; |
Value stored to 'subdocRootFrame' is never read | |
254 | presShell = presShellForNextView; |
255 | } |
256 | } |
257 | if (!presShell) { |
258 | // If we don't have a frame we use this roundabout way to get the pres |
259 | // shell. |
260 | if (!mFrameLoader) return nullptr; |
261 | nsIDocShell* docShell = mFrameLoader->GetDocShell(IgnoreErrors()); |
262 | if (!docShell) return nullptr; |
263 | presShell = docShell->GetPresShell(); |
264 | } |
265 | } |
266 | |
267 | return presShell; |
268 | } |
269 | |
270 | nsRect nsSubDocumentFrame::GetDestRect() { |
271 | nsRect rect = GetContent()->IsHTMLElement(nsGkAtoms::frame) |
272 | ? GetRectRelativeToSelf() |
273 | : GetContentRectRelativeToSelf(); |
274 | return GetDestRect(rect); |
275 | } |
276 | |
277 | nsRect nsSubDocumentFrame::GetDestRect(const nsRect& aConstraintRect) { |
278 | // Adjust subdocument size, according to 'object-fit' and the subdocument's |
279 | // intrinsic size and ratio. |
280 | return nsLayoutUtils::ComputeObjectDestRect( |
281 | aConstraintRect, ComputeIntrinsicSize(/* aIgnoreContainment = */ true), |
282 | GetIntrinsicRatio(), StylePosition()); |
283 | } |
284 | |
285 | ScreenIntSize nsSubDocumentFrame::GetSubdocumentSize() { |
286 | if (HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) { |
287 | if (RefPtr<nsFrameLoader> frameloader = FrameLoader()) { |
288 | nsIFrame* detachedFrame = frameloader->GetDetachedSubdocFrame(); |
289 | if (nsView* view = detachedFrame ? detachedFrame->GetView() : nullptr) { |
290 | nsSize size = view->GetBounds().Size(); |
291 | nsPresContext* presContext = detachedFrame->PresContext(); |
292 | return ScreenIntSize(presContext->AppUnitsToDevPixels(size.width), |
293 | presContext->AppUnitsToDevPixels(size.height)); |
294 | } |
295 | } |
296 | // Pick some default size for now. Using 10x10 because that's what the |
297 | // code used to do. |
298 | return ScreenIntSize(10, 10); |
299 | } |
300 | |
301 | nsSize docSizeAppUnits = GetDestRect().Size(); |
302 | nsPresContext* pc = PresContext(); |
303 | return ScreenIntSize(pc->AppUnitsToDevPixels(docSizeAppUnits.width), |
304 | pc->AppUnitsToDevPixels(docSizeAppUnits.height)); |
305 | } |
306 | |
307 | static void WrapBackgroundColorInOwnLayer(nsDisplayListBuilder* aBuilder, |
308 | nsIFrame* aFrame, |
309 | nsDisplayList* aList) { |
310 | for (nsDisplayItem* item : aList->TakeItems()) { |
311 | if (item->GetType() == DisplayItemType::TYPE_BACKGROUND_COLOR) { |
312 | nsDisplayList tmpList(aBuilder); |
313 | tmpList.AppendToTop(item); |
314 | item = MakeDisplayItemWithIndex<nsDisplayOwnLayer>( |
315 | aBuilder, aFrame, /* aIndex = */ nsDisplayOwnLayer::OwnLayerForSubdoc, |
316 | &tmpList, aBuilder->CurrentActiveScrolledRoot(), |
317 | nsDisplayOwnLayerFlags::None, ScrollbarData{}, true, false); |
318 | } |
319 | aList->AppendToTop(item); |
320 | } |
321 | } |
322 | |
323 | void nsSubDocumentFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder, |
324 | const nsDisplayListSet& aLists) { |
325 | if (!IsVisibleForPainting()) { |
326 | return; |
327 | } |
328 | |
329 | const bool pointerEventsNone = |
330 | Style()->PointerEvents() == StylePointerEvents::None; |
331 | if (aBuilder->IsForEventDelivery() && pointerEventsNone) { |
332 | // If we are pointer-events:none then we don't need to HitTest background or |
333 | // anything else. |
334 | return; |
335 | } |
336 | |
337 | nsFrameLoader* frameLoader = FrameLoader(); |
338 | const bool isRemoteFrame = frameLoader && frameLoader->IsRemoteFrame(); |
339 | |
340 | nsDisplayListCollection decorations(aBuilder); |
341 | DisplayBorderBackgroundOutline(aBuilder, decorations); |
342 | if (isRemoteFrame) { |
343 | // Wrap background colors of <iframe>s with remote subdocuments in their |
344 | // own layer so we generate a ColorLayer. This is helpful for optimizing |
345 | // compositing; we can skip compositing the ColorLayer when the |
346 | // remote content is opaque. |
347 | WrapBackgroundColorInOwnLayer(aBuilder, this, |
348 | decorations.BorderBackground()); |
349 | } |
350 | decorations.MoveTo(aLists); |
351 | |
352 | if (HidesContent()) { |
353 | return; |
354 | } |
355 | |
356 | // If we're passing pointer events to children then we have to descend into |
357 | // subdocuments no matter what, to determine which parts are transparent for |
358 | // hit-testing or event regions. |
359 | bool needToDescend = aBuilder->GetDescendIntoSubdocuments(); |
360 | if (!mInnerView || !needToDescend) { |
361 | return; |
362 | } |
363 | |
364 | if (isRemoteFrame) { |
365 | // We're the subdoc for <browser remote="true"> and it has |
366 | // painted content. Display its shadow layer tree. |
367 | DisplayListClipState::AutoSaveRestore clipState(aBuilder); |
368 | clipState.ClipContainingBlockDescendantsToContentBox(aBuilder, this); |
369 | |
370 | aLists.Content()->AppendNewToTop<nsDisplayRemote>(aBuilder, this); |
371 | return; |
372 | } |
373 | |
374 | RefPtr<mozilla::PresShell> presShell = GetSubdocumentPresShellForPainting( |
375 | aBuilder->IsIgnoringPaintSuppression() ? IGNORE_PAINT_SUPPRESSION : 0); |
376 | |
377 | if (!presShell) { |
378 | return; |
379 | } |
380 | |
381 | if (aBuilder->IsInFilter()) { |
382 | Document* outerDoc = PresShell()->GetDocument(); |
383 | Document* innerDoc = presShell->GetDocument(); |
384 | if (outerDoc && innerDoc) { |
385 | if (!outerDoc->NodePrincipal()->Equals(innerDoc->NodePrincipal())) { |
386 | outerDoc->SetUseCounter(eUseCounter_custom_FilteredCrossOriginIFrame); |
387 | } |
388 | } |
389 | } |
390 | |
391 | nsIFrame* subdocRootFrame = presShell->GetRootFrame(); |
392 | |
393 | nsPresContext* presContext = presShell->GetPresContext(); |
394 | |
395 | int32_t parentAPD = PresContext()->AppUnitsPerDevPixel(); |
396 | int32_t subdocAPD = presContext->AppUnitsPerDevPixel(); |
397 | |
398 | nsRect visible; |
399 | nsRect dirty; |
400 | bool ignoreViewportScrolling = false; |
401 | if (subdocRootFrame) { |
402 | // get the dirty rect relative to the root frame of the subdoc |
403 | visible = aBuilder->GetVisibleRect() + GetOffsetToCrossDoc(subdocRootFrame); |
404 | dirty = aBuilder->GetDirtyRect() + GetOffsetToCrossDoc(subdocRootFrame); |
405 | // and convert into the appunits of the subdoc |
406 | visible = visible.ScaleToOtherAppUnitsRoundOut(parentAPD, subdocAPD); |
407 | dirty = dirty.ScaleToOtherAppUnitsRoundOut(parentAPD, subdocAPD); |
408 | |
409 | if (ScrollContainerFrame* sf = presShell->GetRootScrollContainerFrame()) { |
410 | // Use a copy, so the rects don't get modified. |
411 | nsRect copyOfDirty = dirty; |
412 | nsRect copyOfVisible = visible; |
413 | // TODO(botond): Can we just axe this DecideScrollableLayer call? |
414 | sf->DecideScrollableLayer(aBuilder, ©OfVisible, ©OfDirty, |
415 | /* aSetBase = */ true); |
416 | |
417 | ignoreViewportScrolling = presShell->IgnoringViewportScrolling(); |
418 | } |
419 | |
420 | aBuilder->EnterPresShell(subdocRootFrame, pointerEventsNone); |
421 | aBuilder->IncrementPresShellPaintCount(presShell); |
422 | } else { |
423 | visible = aBuilder->GetVisibleRect(); |
424 | dirty = aBuilder->GetDirtyRect(); |
425 | } |
426 | |
427 | DisplayListClipState::AutoSaveRestore clipState(aBuilder); |
428 | clipState.ClipContainingBlockDescendantsToContentBox(aBuilder, this); |
429 | |
430 | ScrollContainerFrame* sf = presShell->GetRootScrollContainerFrame(); |
431 | bool constructZoomItem = subdocRootFrame && parentAPD != subdocAPD; |
432 | bool needsOwnLayer = constructZoomItem || |
433 | presContext->IsRootContentDocumentCrossProcess() || |
434 | (sf && sf->IsScrollingActive()); |
435 | |
436 | nsDisplayList childItems(aBuilder); |
437 | |
438 | { |
439 | DisplayListClipState::AutoSaveRestore nestedClipState(aBuilder); |
440 | if (needsOwnLayer) { |
441 | // Clear current clip. There's no point in propagating it down, since |
442 | // the layer we will construct will be clipped by the current clip. |
443 | // In fact for nsDisplayZoom propagating it down would be incorrect since |
444 | // nsDisplayZoom changes the meaning of appunits. |
445 | nestedClipState.Clear(); |
446 | } |
447 | |
448 | // Invoke AutoBuildingDisplayList to ensure that the correct dirty rect |
449 | // is used to compute the visible rect if AddCanvasBackgroundColorItem |
450 | // creates a display item. |
451 | nsIFrame* frame = subdocRootFrame ? subdocRootFrame : this; |
452 | nsDisplayListBuilder::AutoBuildingDisplayList building(aBuilder, frame, |
453 | visible, dirty); |
454 | |
455 | if (subdocRootFrame) { |
456 | bool hasDocumentLevelListenersForApzAwareEvents = |
457 | gfxPlatform::AsyncPanZoomEnabled() && |
458 | nsLayoutUtils::HasDocumentLevelListenersForApzAwareEvents(presShell); |
459 | |
460 | aBuilder->SetAncestorHasApzAwareEventHandler( |
461 | hasDocumentLevelListenersForApzAwareEvents); |
462 | subdocRootFrame->BuildDisplayListForStackingContext(aBuilder, |
463 | &childItems); |
464 | if (!aBuilder->IsForEventDelivery()) { |
465 | // If we are going to use a displayzoom below then any items we put |
466 | // under it need to have underlying frames from the subdocument. So we |
467 | // need to calculate the bounds based on which frame will be the |
468 | // underlying frame for the canvas background color item. |
469 | nsRect bounds = |
470 | GetContentRectRelativeToSelf() + aBuilder->ToReferenceFrame(this); |
471 | bounds = bounds.ScaleToOtherAppUnitsRoundOut(parentAPD, subdocAPD); |
472 | |
473 | // Add the canvas background color to the bottom of the list. This |
474 | // happens after we've built the list so that |
475 | // AddCanvasBackgroundColorItem can monkey with the contents if |
476 | // necessary. |
477 | presShell->AddCanvasBackgroundColorItem(aBuilder, &childItems, frame, |
478 | bounds, NS_RGBA(0, 0, 0, 0)((nscolor)(((0) << 24) | ((0) << 16) | ((0) << 8) | (0)))); |
479 | } |
480 | } |
481 | } |
482 | |
483 | if (subdocRootFrame) { |
484 | aBuilder->LeavePresShell(subdocRootFrame, &childItems); |
485 | } |
486 | |
487 | // Generate a resolution and/or zoom item if needed. If one or both of those |
488 | // is created, we don't need to create a separate nsDisplaySubDocument. |
489 | |
490 | nsDisplayOwnLayerFlags flags = |
491 | nsDisplayOwnLayerFlags::GenerateSubdocInvalidations; |
492 | // If ignoreViewportScrolling is true then the top most layer we create here |
493 | // is going to become the scrollable layer for the root scroll frame, so we |
494 | // want to add nsDisplayOwnLayer::GENERATE_SCROLLABLE_LAYER to whatever layer |
495 | // becomes the topmost. We do this below. |
496 | if (constructZoomItem) { |
497 | nsDisplayOwnLayerFlags zoomFlags = flags; |
498 | if (ignoreViewportScrolling) { |
499 | zoomFlags |= nsDisplayOwnLayerFlags::GenerateScrollableLayer; |
500 | } |
501 | childItems.AppendNewToTop<nsDisplayZoom>(aBuilder, subdocRootFrame, this, |
502 | &childItems, subdocAPD, parentAPD, |
503 | zoomFlags); |
504 | |
505 | needsOwnLayer = false; |
506 | } |
507 | // Wrap the zoom item in the resolution item if we have both because we want |
508 | // the resolution scale applied on top of the app units per dev pixel |
509 | // conversion. |
510 | if (ignoreViewportScrolling) { |
511 | flags |= nsDisplayOwnLayerFlags::GenerateScrollableLayer; |
512 | } |
513 | |
514 | // We always want top level content documents to be in their own layer. |
515 | nsDisplaySubDocument* layerItem = MakeDisplayItem<nsDisplaySubDocument>( |
516 | aBuilder, subdocRootFrame ? subdocRootFrame : this, this, &childItems, |
517 | flags); |
518 | if (layerItem) { |
519 | childItems.AppendToTop(layerItem); |
520 | layerItem->SetShouldFlattenAway(!needsOwnLayer); |
521 | } |
522 | |
523 | if (aBuilder->IsForFrameVisibility()) { |
524 | // We don't add the childItems to the return list as we're dealing with them |
525 | // here. |
526 | presShell->RebuildApproximateFrameVisibilityDisplayList(childItems); |
527 | childItems.DeleteAll(aBuilder); |
528 | } else { |
529 | aLists.Content()->AppendToTop(&childItems); |
530 | } |
531 | } |
532 | |
533 | #ifdef DEBUG_FRAME_DUMP1 |
534 | void nsSubDocumentFrame::List(FILE* out, const char* aPrefix, |
535 | ListFlags aFlags) const { |
536 | nsCString str; |
537 | ListGeneric(str, aPrefix, aFlags); |
538 | fprintf_stderr(out, "%s\n", str.get()); |
539 | |
540 | if (aFlags.contains(ListFlag::TraverseSubdocumentFrames)) { |
541 | nsSubDocumentFrame* f = const_cast<nsSubDocumentFrame*>(this); |
542 | nsIFrame* subdocRootFrame = f->GetSubdocumentRootFrame(); |
543 | if (subdocRootFrame) { |
544 | nsCString pfx(aPrefix); |
545 | pfx += " "; |
546 | subdocRootFrame->List(out, pfx.get(), aFlags); |
547 | } |
548 | } |
549 | } |
550 | |
551 | nsresult nsSubDocumentFrame::GetFrameName(nsAString& aResult) const { |
552 | return MakeFrameName(u"FrameOuter"_ns, aResult); |
553 | } |
554 | #endif |
555 | |
556 | nscoord nsSubDocumentFrame::IntrinsicISize(gfxContext* aContext, |
557 | IntrinsicISizeType aType) { |
558 | // Note: when computing max-content inline size (i.e. when aType is |
559 | // IntrinsicISizeType::PrefISize), if the subdocument is an SVG document, then |
560 | // in theory we want to return the same value that SVGOuterSVGFrame does. That |
561 | // method has some special handling of percentage values to avoid unhelpful |
562 | // zero sizing in the presence of orthogonal writing modes. We don't bother |
563 | // with that for SVG documents in <embed> and <object>, since that special |
564 | // handling doesn't look up across document boundaries anyway. |
565 | return GetIntrinsicISize(); |
566 | } |
567 | |
568 | /* virtual */ |
569 | IntrinsicSize nsSubDocumentFrame::GetIntrinsicSize() { |
570 | return ComputeIntrinsicSize(); |
571 | } |
572 | |
573 | IntrinsicSize nsSubDocumentFrame::ComputeIntrinsicSize( |
574 | bool aIgnoreContainment) const { |
575 | const auto containAxes = |
576 | aIgnoreContainment ? ContainSizeAxes(false, false) : GetContainSizeAxes(); |
577 | if (containAxes.IsBoth()) { |
578 | // Intrinsic size of 'contain:size' replaced elements is determined by |
579 | // contain-intrinsic-size. |
580 | return FinishIntrinsicSize(containAxes, IntrinsicSize(0, 0)); |
581 | } |
582 | |
583 | if (nsCOMPtr<nsIObjectLoadingContent> iolc = do_QueryInterface(mContent)) { |
584 | const auto* olc = static_cast<nsObjectLoadingContent*>(iolc.get()); |
585 | if (auto size = olc->GetSubdocumentIntrinsicSize()) { |
586 | // Use the intrinsic size from the child SVG document, if available. |
587 | return FinishIntrinsicSize(containAxes, *size); |
588 | } |
589 | } |
590 | |
591 | if (!IsInline()) { |
592 | return {}; // <frame> elements have no useful intrinsic size. |
593 | } |
594 | |
595 | if (mContent->IsXULElement()) { |
596 | return {}; // XUL <iframe> and <browser> have no useful intrinsic size |
597 | } |
598 | |
599 | // We must be an HTML <iframe>. Return fallback size. |
600 | return FinishIntrinsicSize(containAxes, |
601 | IntrinsicSize(kFallbackIntrinsicSize)); |
602 | } |
603 | |
604 | /* virtual */ |
605 | AspectRatio nsSubDocumentFrame::GetIntrinsicRatio() const { |
606 | // FIXME(emilio): This should probably respect contain: size and return no |
607 | // ratio in the case subDocRoot is non-null. Otherwise we do it by virtue of |
608 | // using a zero-size below and reusing GetIntrinsicSize(). |
609 | if (nsCOMPtr<nsIObjectLoadingContent> iolc = do_QueryInterface(mContent)) { |
610 | auto olc = static_cast<nsObjectLoadingContent*>(iolc.get()); |
611 | |
612 | auto ratio = olc->GetSubdocumentIntrinsicRatio(); |
613 | if (ratio && *ratio) { |
614 | // Use the intrinsic aspect ratio from the child SVG document, if |
615 | // available. |
616 | return *ratio; |
617 | } |
618 | } |
619 | |
620 | // NOTE(emilio): Even though we have an intrinsic size, we may not have an |
621 | // intrinsic ratio. For example `<iframe style="width: 100px">` should not |
622 | // shrink in the vertical axis to preserve the 300x150 ratio. |
623 | return nsAtomicContainerFrame::GetIntrinsicRatio(); |
624 | } |
625 | |
626 | /* virtual */ |
627 | LogicalSize nsSubDocumentFrame::ComputeAutoSize( |
628 | gfxContext* aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize, |
629 | nscoord aAvailableISize, const LogicalSize& aMargin, |
630 | const LogicalSize& aBorderPadding, const StyleSizeOverrides& aSizeOverrides, |
631 | ComputeSizeFlags aFlags) { |
632 | if (!IsInline()) { |
633 | return nsIFrame::ComputeAutoSize(aRenderingContext, aWM, aCBSize, |
634 | aAvailableISize, aMargin, aBorderPadding, |
635 | aSizeOverrides, aFlags); |
636 | } |
637 | |
638 | const WritingMode wm = GetWritingMode(); |
639 | LogicalSize result(wm, GetIntrinsicISize(), GetIntrinsicBSize()); |
640 | return result.ConvertTo(aWM, wm); |
641 | } |
642 | |
643 | /* virtual */ |
644 | nsIFrame::SizeComputationResult nsSubDocumentFrame::ComputeSize( |
645 | gfxContext* aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize, |
646 | nscoord aAvailableISize, const LogicalSize& aMargin, |
647 | const LogicalSize& aBorderPadding, const StyleSizeOverrides& aSizeOverrides, |
648 | ComputeSizeFlags aFlags) { |
649 | return {ComputeSizeWithIntrinsicDimensions( |
650 | aRenderingContext, aWM, GetIntrinsicSize(), GetAspectRatio(), |
651 | aCBSize, aMargin, aBorderPadding, aSizeOverrides, aFlags), |
652 | AspectRatioUsage::None}; |
653 | } |
654 | |
655 | void nsSubDocumentFrame::Reflow(nsPresContext* aPresContext, |
656 | ReflowOutput& aDesiredSize, |
657 | const ReflowInput& aReflowInput, |
658 | nsReflowStatus& aStatus) { |
659 | MarkInReflow(); |
660 | DO_GLOBAL_REFLOW_COUNT("nsSubDocumentFrame")aPresContext->CountReflows(("nsSubDocumentFrame"), (nsIFrame *)this);; |
661 | MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aStatus.IsEmpty())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aStatus.IsEmpty()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aStatus.IsEmpty()" " (" "Caller should pass a fresh reflow status!" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 661); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aStatus.IsEmpty()" ") (" "Caller should pass a fresh reflow status!" ")"); do { *((volatile int*)__null) = 661; __attribute__((nomerge)) ::abort (); } while (false); } } while (false); |
662 | NS_FRAME_TRACE(do { if ((int(((mozilla::LogModule*)(nsIFrame::sFrameLogModule ))->Level()) & (0x1))) { TraceMsg ("enter nsSubDocumentFrame::Reflow: maxSize=%d,%d" , aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight ()); } } while (0) |
663 | NS_FRAME_TRACE_CALLS,do { if ((int(((mozilla::LogModule*)(nsIFrame::sFrameLogModule ))->Level()) & (0x1))) { TraceMsg ("enter nsSubDocumentFrame::Reflow: maxSize=%d,%d" , aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight ()); } } while (0) |
664 | ("enter nsSubDocumentFrame::Reflow: maxSize=%d,%d",do { if ((int(((mozilla::LogModule*)(nsIFrame::sFrameLogModule ))->Level()) & (0x1))) { TraceMsg ("enter nsSubDocumentFrame::Reflow: maxSize=%d,%d" , aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight ()); } } while (0) |
665 | aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight()))do { if ((int(((mozilla::LogModule*)(nsIFrame::sFrameLogModule ))->Level()) & (0x1))) { TraceMsg ("enter nsSubDocumentFrame::Reflow: maxSize=%d,%d" , aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight ()); } } while (0); |
666 | |
667 | NS_ASSERTION(aReflowInput.ComputedISize() != NS_UNCONSTRAINEDSIZE,do { if (!(aReflowInput.ComputedISize() != NS_UNCONSTRAINEDSIZE )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Shouldn't have unconstrained inline-size here " "thanks to the rules of reflow", "aReflowInput.ComputedISize() != NS_UNCONSTRAINEDSIZE" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 669); MOZ_PretendNoReturn(); } } while (0) |
668 | "Shouldn't have unconstrained inline-size here "do { if (!(aReflowInput.ComputedISize() != NS_UNCONSTRAINEDSIZE )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Shouldn't have unconstrained inline-size here " "thanks to the rules of reflow", "aReflowInput.ComputedISize() != NS_UNCONSTRAINEDSIZE" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 669); MOZ_PretendNoReturn(); } } while (0) |
669 | "thanks to the rules of reflow")do { if (!(aReflowInput.ComputedISize() != NS_UNCONSTRAINEDSIZE )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Shouldn't have unconstrained inline-size here " "thanks to the rules of reflow", "aReflowInput.ComputedISize() != NS_UNCONSTRAINEDSIZE" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 669); MOZ_PretendNoReturn(); } } while (0); |
670 | NS_ASSERTION(aReflowInput.ComputedBSize() != NS_UNCONSTRAINEDSIZE,do { if (!(aReflowInput.ComputedBSize() != NS_UNCONSTRAINEDSIZE )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Shouldn't have unconstrained block-size here " "thanks to ComputeAutoSize", "aReflowInput.ComputedBSize() != NS_UNCONSTRAINEDSIZE" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 672); MOZ_PretendNoReturn(); } } while (0) |
671 | "Shouldn't have unconstrained block-size here "do { if (!(aReflowInput.ComputedBSize() != NS_UNCONSTRAINEDSIZE )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Shouldn't have unconstrained block-size here " "thanks to ComputeAutoSize", "aReflowInput.ComputedBSize() != NS_UNCONSTRAINEDSIZE" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 672); MOZ_PretendNoReturn(); } } while (0) |
672 | "thanks to ComputeAutoSize")do { if (!(aReflowInput.ComputedBSize() != NS_UNCONSTRAINEDSIZE )) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Shouldn't have unconstrained block-size here " "thanks to ComputeAutoSize", "aReflowInput.ComputedBSize() != NS_UNCONSTRAINEDSIZE" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 672); MOZ_PretendNoReturn(); } } while (0); |
673 | |
674 | NS_ASSERTION(mContent->GetPrimaryFrame() == this, "Shouldn't happen")do { if (!(mContent->GetPrimaryFrame() == this)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "Shouldn't happen", "mContent->GetPrimaryFrame() == this" , "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 674); MOZ_PretendNoReturn(); } } while (0); |
675 | |
676 | // XUL <iframe> or <browser>, or HTML <iframe>, <object> or <embed> |
677 | const auto wm = aReflowInput.GetWritingMode(); |
678 | aDesiredSize.SetSize(wm, aReflowInput.ComputedSizeWithBorderPadding(wm)); |
679 | |
680 | // "offset" is the offset of our content area from our frame's |
681 | // top-left corner. |
682 | nsPoint offset = nsPoint(aReflowInput.ComputedPhysicalBorderPadding().left, |
683 | aReflowInput.ComputedPhysicalBorderPadding().top); |
684 | |
685 | if (mInnerView) { |
686 | const nsMargin& bp = aReflowInput.ComputedPhysicalBorderPadding(); |
687 | nsSize innerSize(aDesiredSize.Width() - bp.LeftRight(), |
688 | aDesiredSize.Height() - bp.TopBottom()); |
689 | |
690 | // Size & position the view according to 'object-fit' & 'object-position'. |
691 | nsRect destRect = GetDestRect(nsRect(offset, innerSize)); |
692 | nsViewManager* vm = mInnerView->GetViewManager(); |
693 | vm->MoveViewTo(mInnerView, destRect.x, destRect.y); |
694 | vm->ResizeView(mInnerView, nsRect(nsPoint(0, 0), destRect.Size())); |
695 | } |
696 | |
697 | aDesiredSize.SetOverflowAreasToDesiredBounds(); |
698 | |
699 | FinishAndStoreOverflow(&aDesiredSize); |
700 | |
701 | if (!aPresContext->IsRootPaginatedDocument() && !mPostedReflowCallback) { |
702 | PresShell()->PostReflowCallback(this); |
703 | mPostedReflowCallback = true; |
704 | } |
705 | |
706 | NS_FRAME_TRACE(do { if ((int(((mozilla::LogModule*)(nsIFrame::sFrameLogModule ))->Level()) & (0x1))) { TraceMsg ("exit nsSubDocumentFrame::Reflow: size=%d,%d status=%s" , aDesiredSize.Width(), aDesiredSize.Height(), ToString(aStatus ).c_str()); } } while (0) |
707 | NS_FRAME_TRACE_CALLS,do { if ((int(((mozilla::LogModule*)(nsIFrame::sFrameLogModule ))->Level()) & (0x1))) { TraceMsg ("exit nsSubDocumentFrame::Reflow: size=%d,%d status=%s" , aDesiredSize.Width(), aDesiredSize.Height(), ToString(aStatus ).c_str()); } } while (0) |
708 | ("exit nsSubDocumentFrame::Reflow: size=%d,%d status=%s",do { if ((int(((mozilla::LogModule*)(nsIFrame::sFrameLogModule ))->Level()) & (0x1))) { TraceMsg ("exit nsSubDocumentFrame::Reflow: size=%d,%d status=%s" , aDesiredSize.Width(), aDesiredSize.Height(), ToString(aStatus ).c_str()); } } while (0) |
709 | aDesiredSize.Width(), aDesiredSize.Height(), ToString(aStatus).c_str()))do { if ((int(((mozilla::LogModule*)(nsIFrame::sFrameLogModule ))->Level()) & (0x1))) { TraceMsg ("exit nsSubDocumentFrame::Reflow: size=%d,%d status=%s" , aDesiredSize.Width(), aDesiredSize.Height(), ToString(aStatus ).c_str()); } } while (0); |
710 | } |
711 | |
712 | bool nsSubDocumentFrame::ReflowFinished() { |
713 | RefPtr<nsFrameLoader> frameloader = FrameLoader(); |
714 | if (frameloader) { |
715 | AutoWeakFrame weakFrame(this); |
716 | |
717 | frameloader->UpdatePositionAndSize(this); |
718 | |
719 | if (weakFrame.IsAlive()) { |
720 | // Make sure that we can post a reflow callback in the future. |
721 | mPostedReflowCallback = false; |
722 | } |
723 | } else { |
724 | mPostedReflowCallback = false; |
725 | } |
726 | return false; |
727 | } |
728 | |
729 | void nsSubDocumentFrame::ReflowCallbackCanceled() { |
730 | mPostedReflowCallback = false; |
731 | } |
732 | |
733 | nsresult nsSubDocumentFrame::AttributeChanged(int32_t aNameSpaceID, |
734 | nsAtom* aAttribute, |
735 | int32_t aModType) { |
736 | if (aNameSpaceID != kNameSpaceID_None) { |
737 | return NS_OK; |
738 | } |
739 | |
740 | // If the noResize attribute changes, dis/allow frame to be resized |
741 | if (aAttribute == nsGkAtoms::noresize) { |
742 | // Note that we're not doing content type checks, but that's ok -- if |
743 | // they'd fail we will just end up with a null framesetFrame. |
744 | if (mContent->GetParent()->IsHTMLElement(nsGkAtoms::frameset)) { |
745 | nsIFrame* parentFrame = GetParent(); |
746 | |
747 | if (parentFrame) { |
748 | // There is no interface for nsHTMLFramesetFrame so QI'ing to |
749 | // concrete class, yay! |
750 | nsHTMLFramesetFrame* framesetFrame = do_QueryFrame(parentFrame); |
751 | if (framesetFrame) { |
752 | framesetFrame->RecalculateBorderResize(); |
753 | } |
754 | } |
755 | } |
756 | } else if (aAttribute == nsGkAtoms::marginwidth || |
757 | aAttribute == nsGkAtoms::marginheight) { |
758 | // Notify the frameloader |
759 | if (RefPtr<nsFrameLoader> frameloader = FrameLoader()) { |
760 | frameloader->MarginsChanged(); |
761 | } |
762 | } |
763 | |
764 | return NS_OK; |
765 | } |
766 | |
767 | void nsSubDocumentFrame::MaybeUpdateEmbedderColorScheme() { |
768 | nsFrameLoader* fl = mFrameLoader.get(); |
769 | if (!fl) { |
770 | return; |
771 | } |
772 | |
773 | BrowsingContext* bc = fl->GetExtantBrowsingContext(); |
774 | if (!bc) { |
775 | return; |
776 | } |
777 | |
778 | auto ToOverride = [](ColorScheme aScheme) -> PrefersColorSchemeOverride { |
779 | return aScheme == ColorScheme::Dark ? PrefersColorSchemeOverride::Dark |
780 | : PrefersColorSchemeOverride::Light; |
781 | }; |
782 | |
783 | EmbedderColorSchemes schemes{ |
784 | ToOverride(LookAndFeel::ColorSchemeForFrame(this, ColorSchemeMode::Used)), |
785 | ToOverride( |
786 | LookAndFeel::ColorSchemeForFrame(this, ColorSchemeMode::Preferred))}; |
787 | if (bc->GetEmbedderColorSchemes() == schemes) { |
788 | return; |
789 | } |
790 | |
791 | Unused << bc->SetEmbedderColorSchemes(schemes); |
792 | } |
793 | |
794 | void nsSubDocumentFrame::MaybeUpdateRemoteStyle( |
795 | ComputedStyle* aOldComputedStyle) { |
796 | if (!mIsInObjectOrEmbed) { |
797 | return; |
798 | } |
799 | |
800 | if (aOldComputedStyle && |
801 | aOldComputedStyle->StyleVisibility()->mImageRendering == |
802 | Style()->StyleVisibility()->mImageRendering) { |
803 | return; |
804 | } |
805 | |
806 | if (!mFrameLoader) { |
807 | return; |
808 | } |
809 | |
810 | if (mFrameLoader->IsRemoteFrame()) { |
811 | mFrameLoader->UpdateRemoteStyle( |
812 | Style()->StyleVisibility()->mImageRendering); |
813 | return; |
814 | } |
815 | |
816 | BrowsingContext* context = mFrameLoader->GetExtantBrowsingContext(); |
817 | if (!context) { |
818 | return; |
819 | } |
820 | |
821 | Document* document = context->GetDocument(); |
822 | if (!document) { |
823 | return; |
824 | } |
825 | |
826 | if (document->IsImageDocument()) { |
827 | document->AsImageDocument()->UpdateRemoteStyle( |
828 | Style()->StyleVisibility()->mImageRendering); |
829 | } |
830 | } |
831 | |
832 | void nsSubDocumentFrame::DidSetComputedStyle(ComputedStyle* aOldComputedStyle) { |
833 | nsAtomicContainerFrame::DidSetComputedStyle(aOldComputedStyle); |
834 | |
835 | MaybeUpdateEmbedderColorScheme(); |
836 | |
837 | MaybeUpdateRemoteStyle(aOldComputedStyle); |
838 | |
839 | // If this presshell has invisible ancestors, we don't need to propagate the |
840 | // visibility style change to the subdocument since the subdocument should |
841 | // have already set the IsUnderHiddenEmbedderElement flag in |
842 | // nsSubDocumentFrame::Init. |
843 | if (PresShell()->IsUnderHiddenEmbedderElement()) { |
844 | return; |
845 | } |
846 | |
847 | const bool isVisible = StyleVisibility()->IsVisible(); |
848 | if (!aOldComputedStyle || |
849 | isVisible != aOldComputedStyle->StyleVisibility()->IsVisible()) { |
850 | PropagateIsUnderHiddenEmbedderElement(!isVisible); |
851 | } |
852 | } |
853 | |
854 | nsIFrame* NS_NewSubDocumentFrame(PresShell* aPresShell, ComputedStyle* aStyle) { |
855 | return new (aPresShell) |
856 | nsSubDocumentFrame(aStyle, aPresShell->GetPresContext()); |
857 | } |
858 | |
859 | NS_IMPL_FRAMEARENA_HELPERS(nsSubDocumentFrame)void* nsSubDocumentFrame ::operator new(size_t sz, mozilla::PresShell * aShell) { return aShell->AllocateFrame(nsQueryFrame::nsSubDocumentFrame_id , sz); } |
860 | |
861 | class nsHideViewer final : public Runnable { |
862 | public: |
863 | nsHideViewer(nsIContent* aFrameElement, nsFrameLoader* aFrameLoader, |
864 | PresShell* aPresShell, bool aHideViewerIfFrameless) |
865 | : mozilla::Runnable("nsHideViewer"), |
866 | mFrameElement(aFrameElement), |
867 | mFrameLoader(aFrameLoader), |
868 | mPresShell(aPresShell), |
869 | mHideViewerIfFrameless(aHideViewerIfFrameless) { |
870 | NS_ASSERTION(mFrameElement, "Must have a frame element")do { if (!(mFrameElement)) { NS_DebugBreak(NS_DEBUG_ASSERTION , "Must have a frame element", "mFrameElement", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 870); MOZ_PretendNoReturn(); } } while (0); |
871 | NS_ASSERTION(mFrameLoader, "Must have a frame loader")do { if (!(mFrameLoader)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Must have a frame loader", "mFrameLoader", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 871); MOZ_PretendNoReturn(); } } while (0); |
872 | NS_ASSERTION(mPresShell, "Must have a presshell")do { if (!(mPresShell)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Must have a presshell" , "mPresShell", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 872); MOZ_PretendNoReturn(); } } while (0); |
873 | } |
874 | |
875 | MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHODvirtual nsresult Run() override { |
876 | // Flush frames, to ensure any pending display:none changes are made. |
877 | // Note it can be unsafe to flush if we've destroyed the presentation |
878 | // for some other reason, like if we're shutting down. |
879 | // |
880 | // But avoid the flush if we know for sure we're away, like when we're out |
881 | // of the document already. |
882 | // |
883 | // FIXME(emilio): This could still be a perf footgun when removing lots of |
884 | // siblings where each of them cause the reframe of an ancestor which happen |
885 | // to contain a subdocument. |
886 | // |
887 | // We should find some way to avoid that! |
888 | if (!mPresShell->IsDestroying() && mFrameElement->IsInComposedDoc()) { |
889 | mPresShell->FlushPendingNotifications(FlushType::Frames); |
890 | } |
891 | |
892 | // Either the frame has been constructed by now, or it never will be, |
893 | // either way we want to clear the stashed views. |
894 | mFrameLoader->SetDetachedSubdocFrame(nullptr); |
895 | |
896 | nsSubDocumentFrame* frame = do_QueryFrame(mFrameElement->GetPrimaryFrame()); |
897 | if (!frame || frame->FrameLoader() != mFrameLoader) { |
898 | PropagateIsUnderHiddenEmbedderElement(mFrameLoader, true); |
899 | if (mHideViewerIfFrameless) { |
900 | // The frame element has no nsIFrame for the same frame loader. |
901 | // Hide the nsFrameLoader, which destroys the presentation. |
902 | mFrameLoader->Hide(); |
903 | } |
904 | } |
905 | return NS_OK; |
906 | } |
907 | |
908 | private: |
909 | const nsCOMPtr<nsIContent> mFrameElement; |
910 | const RefPtr<nsFrameLoader> mFrameLoader; |
911 | const RefPtr<PresShell> mPresShell; |
912 | const bool mHideViewerIfFrameless; |
913 | }; |
914 | |
915 | static nsView* BeginSwapDocShellsForViews(nsView* aSibling); |
916 | |
917 | void nsSubDocumentFrame::Destroy(DestroyContext& aContext) { |
918 | if (mPostedReflowCallback) { |
919 | PresShell()->CancelReflowCallback(this); |
920 | mPostedReflowCallback = false; |
921 | } |
922 | |
923 | // Detach the subdocument's views and stash them in the frame loader. |
924 | // We can then reattach them if we're being reframed (for example if |
925 | // the frame has been made position:fixed). |
926 | if (RefPtr<nsFrameLoader> frameloader = FrameLoader()) { |
927 | ClearDisplayItems(); |
928 | |
929 | nsView* detachedViews = |
930 | ::BeginSwapDocShellsForViews(mInnerView->GetFirstChild()); |
931 | |
932 | frameloader->SetDetachedSubdocFrame( |
933 | detachedViews ? detachedViews->GetFrame() : nullptr); |
934 | |
935 | // We call nsFrameLoader::HideViewer() in a script runner so that we can |
936 | // safely determine whether the frame is being reframed or destroyed. |
937 | nsContentUtils::AddScriptRunner(new nsHideViewer( |
938 | mContent, frameloader, PresShell(), (mDidCreateDoc || mCallingShow))); |
939 | } |
940 | |
941 | nsAtomicContainerFrame::Destroy(aContext); |
942 | } |
943 | |
944 | nsFrameLoader* nsSubDocumentFrame::FrameLoader() const { |
945 | if (mFrameLoader) { |
946 | return mFrameLoader; |
947 | } |
948 | |
949 | if (RefPtr<nsFrameLoaderOwner> loaderOwner = do_QueryObject(GetContent())) { |
950 | mFrameLoader = loaderOwner->GetFrameLoader(); |
951 | } |
952 | |
953 | return mFrameLoader; |
954 | } |
955 | |
956 | auto nsSubDocumentFrame::GetRemotePaintData() const -> RemoteFramePaintData { |
957 | if (mRetainedRemoteFrame) { |
958 | return *mRetainedRemoteFrame; |
959 | } |
960 | |
961 | RemoteFramePaintData data; |
962 | nsFrameLoader* fl = FrameLoader(); |
963 | if (!fl) { |
964 | return data; |
965 | } |
966 | |
967 | auto* rb = fl->GetRemoteBrowser(); |
968 | if (!rb) { |
969 | return data; |
970 | } |
971 | data.mLayersId = rb->GetLayersId(); |
972 | data.mTabId = rb->GetTabId(); |
973 | return data; |
974 | } |
975 | |
976 | void nsSubDocumentFrame::ResetFrameLoader(RetainPaintData aRetain) { |
977 | if (aRetain == RetainPaintData::Yes && mFrameLoader) { |
978 | mRetainedRemoteFrame = Some(GetRemotePaintData()); |
979 | } else { |
980 | mRetainedRemoteFrame.reset(); |
981 | } |
982 | mFrameLoader = nullptr; |
983 | ClearDisplayItems(); |
984 | nsContentUtils::AddScriptRunner(new AsyncFrameInit(this)); |
985 | } |
986 | |
987 | void nsSubDocumentFrame::ClearRetainedPaintData() { |
988 | mRetainedRemoteFrame.reset(); |
989 | ClearDisplayItems(); |
990 | InvalidateFrameSubtree(); |
991 | } |
992 | |
993 | // XXX this should be called ObtainDocShell or something like that, |
994 | // to indicate that it could have side effects |
995 | nsIDocShell* nsSubDocumentFrame::GetDocShell() const { |
996 | // How can FrameLoader() return null??? |
997 | if (NS_WARN_IF(!FrameLoader())NS_warn_if_impl(!FrameLoader(), "!FrameLoader()", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 997)) { |
998 | return nullptr; |
999 | } |
1000 | return mFrameLoader->GetDocShell(IgnoreErrors()); |
1001 | } |
1002 | |
1003 | static void DestroyDisplayItemDataForFrames(nsIFrame* aFrame) { |
1004 | // Destroying a WebRenderUserDataTable can cause destruction of other objects |
1005 | // which can remove frame properties in their destructor. If we delete a frame |
1006 | // property it runs the destructor of the stored object in the middle of |
1007 | // updating the frame property table, so if the destruction of that object |
1008 | // causes another update to the frame property table it would leave the frame |
1009 | // property table in an inconsistent state. So we remove it from the table and |
1010 | // then destroy it. (bug 1530657) |
1011 | WebRenderUserDataTable* userDataTable = |
1012 | aFrame->TakeProperty(WebRenderUserDataProperty::Key()); |
1013 | if (userDataTable) { |
1014 | for (const auto& data : userDataTable->Values()) { |
1015 | data->RemoveFromTable(); |
1016 | } |
1017 | delete userDataTable; |
1018 | } |
1019 | |
1020 | for (const auto& childList : aFrame->ChildLists()) { |
1021 | for (nsIFrame* child : childList.mList) { |
1022 | DestroyDisplayItemDataForFrames(child); |
1023 | } |
1024 | } |
1025 | } |
1026 | |
1027 | static CallState BeginSwapDocShellsForDocument(Document& aDocument) { |
1028 | if (PresShell* presShell = aDocument.GetPresShell()) { |
1029 | // Disable painting while the views are detached, see bug 946929. |
1030 | presShell->SetNeverPainting(true); |
1031 | |
1032 | if (nsIFrame* rootFrame = presShell->GetRootFrame()) { |
1033 | ::DestroyDisplayItemDataForFrames(rootFrame); |
1034 | } |
1035 | } |
1036 | aDocument.EnumerateSubDocuments(BeginSwapDocShellsForDocument); |
1037 | return CallState::Continue; |
1038 | } |
1039 | |
1040 | static nsView* BeginSwapDocShellsForViews(nsView* aSibling) { |
1041 | // Collect the removed sibling views in reverse order in 'removedViews'. |
1042 | nsView* removedViews = nullptr; |
1043 | while (aSibling) { |
1044 | if (Document* doc = ::GetDocumentFromView(aSibling)) { |
1045 | ::BeginSwapDocShellsForDocument(*doc); |
1046 | } |
1047 | nsView* next = aSibling->GetNextSibling(); |
1048 | aSibling->GetViewManager()->RemoveChild(aSibling); |
1049 | aSibling->SetNextSibling(removedViews); |
1050 | removedViews = aSibling; |
1051 | aSibling = next; |
1052 | } |
1053 | return removedViews; |
1054 | } |
1055 | |
1056 | /* static */ |
1057 | void nsSubDocumentFrame::InsertViewsInReverseOrder(nsView* aSibling, |
1058 | nsView* aParent) { |
1059 | MOZ_ASSERT(aParent, "null view")do { static_assert( mozilla::detail::AssertionConditionType< decltype(aParent)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(aParent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aParent" " (" "null view" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 1059); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent" ") (" "null view" ")"); do { *((volatile int*)__null) = 1059; __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false); |
1060 | MOZ_ASSERT(!aParent->GetFirstChild(), "inserting into non-empty list")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!aParent->GetFirstChild())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!aParent->GetFirstChild() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "!aParent->GetFirstChild()" " (" "inserting into non-empty list" ")", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 1060); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aParent->GetFirstChild()" ") (" "inserting into non-empty list" ")"); do { *((volatile int*)__null) = 1060; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
1061 | |
1062 | nsViewManager* vm = aParent->GetViewManager(); |
1063 | while (aSibling) { |
1064 | nsView* next = aSibling->GetNextSibling(); |
1065 | aSibling->SetNextSibling(nullptr); |
1066 | // true means 'after' in document order which is 'before' in view order, |
1067 | // so this call prepends the child, thus reversing the siblings as we go. |
1068 | vm->InsertChild(aParent, aSibling, nullptr, true); |
1069 | aSibling = next; |
1070 | } |
1071 | } |
1072 | |
1073 | nsresult nsSubDocumentFrame::BeginSwapDocShells(nsIFrame* aOther) { |
1074 | if (!aOther || !aOther->IsSubDocumentFrame()) { |
1075 | return NS_ERROR_NOT_IMPLEMENTED; |
1076 | } |
1077 | |
1078 | nsSubDocumentFrame* other = static_cast<nsSubDocumentFrame*>(aOther); |
1079 | if (!mFrameLoader || !mDidCreateDoc || mCallingShow || !other->mFrameLoader || |
1080 | !other->mDidCreateDoc) { |
1081 | return NS_ERROR_NOT_IMPLEMENTED; |
1082 | } |
1083 | |
1084 | ClearDisplayItems(); |
1085 | other->ClearDisplayItems(); |
1086 | |
1087 | if (mInnerView && other->mInnerView) { |
1088 | nsView* ourSubdocViews = mInnerView->GetFirstChild(); |
1089 | nsView* ourRemovedViews = ::BeginSwapDocShellsForViews(ourSubdocViews); |
1090 | nsView* otherSubdocViews = other->mInnerView->GetFirstChild(); |
1091 | nsView* otherRemovedViews = ::BeginSwapDocShellsForViews(otherSubdocViews); |
1092 | |
1093 | InsertViewsInReverseOrder(ourRemovedViews, other->mInnerView); |
1094 | InsertViewsInReverseOrder(otherRemovedViews, mInnerView); |
1095 | } |
1096 | mFrameLoader.swap(other->mFrameLoader); |
1097 | return NS_OK; |
1098 | } |
1099 | |
1100 | static CallState EndSwapDocShellsForDocument(Document& aDocument) { |
1101 | // Our docshell and view trees have been updated for the new hierarchy. |
1102 | // Now also update all nsDeviceContext::mWidget to that of the |
1103 | // container view in the new hierarchy. |
1104 | if (nsCOMPtr<nsIDocShell> ds = aDocument.GetDocShell()) { |
1105 | nsCOMPtr<nsIDocumentViewer> viewer; |
1106 | ds->GetDocViewer(getter_AddRefs(viewer)); |
1107 | while (viewer) { |
1108 | RefPtr<nsPresContext> pc = viewer->GetPresContext(); |
1109 | if (pc && pc->GetPresShell()) { |
1110 | pc->GetPresShell()->SetNeverPainting(ds->IsInvisible()); |
1111 | } |
1112 | nsDeviceContext* dc = pc ? pc->DeviceContext() : nullptr; |
1113 | if (dc) { |
1114 | nsView* v = viewer->FindContainerView(); |
1115 | dc->Init(v ? v->GetNearestWidget(nullptr) : nullptr); |
1116 | } |
1117 | viewer = viewer->GetPreviousViewer(); |
1118 | } |
1119 | } |
1120 | |
1121 | aDocument.EnumerateSubDocuments(EndSwapDocShellsForDocument); |
1122 | return CallState::Continue; |
1123 | } |
1124 | |
1125 | /* static */ |
1126 | void nsSubDocumentFrame::EndSwapDocShellsForViews(nsView* aSibling) { |
1127 | for (; aSibling; aSibling = aSibling->GetNextSibling()) { |
1128 | if (Document* doc = ::GetDocumentFromView(aSibling)) { |
1129 | ::EndSwapDocShellsForDocument(*doc); |
1130 | } |
1131 | nsIFrame* frame = aSibling->GetFrame(); |
1132 | if (frame) { |
1133 | nsIFrame* parent = nsLayoutUtils::GetCrossDocParentFrameInProcess(frame); |
1134 | if (parent->HasAnyStateBits(NS_FRAME_IN_POPUP)) { |
1135 | nsIFrame::AddInPopupStateBitToDescendants(frame); |
1136 | } else { |
1137 | nsIFrame::RemoveInPopupStateBitFromDescendants(frame); |
1138 | } |
1139 | if (frame->HasInvalidFrameInSubtree()) { |
1140 | while (parent && |
1141 | !parent->HasAnyStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT | |
1142 | NS_FRAME_IS_NONDISPLAY)) { |
1143 | parent->AddStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT); |
1144 | parent = nsLayoutUtils::GetCrossDocParentFrameInProcess(parent); |
1145 | } |
1146 | } |
1147 | } |
1148 | } |
1149 | } |
1150 | |
1151 | void nsSubDocumentFrame::EndSwapDocShells(nsIFrame* aOther) { |
1152 | nsSubDocumentFrame* other = static_cast<nsSubDocumentFrame*>(aOther); |
1153 | AutoWeakFrame weakThis(this); |
1154 | AutoWeakFrame weakOther(aOther); |
1155 | |
1156 | if (mInnerView) { |
1157 | EndSwapDocShellsForViews(mInnerView->GetFirstChild()); |
1158 | } |
1159 | if (other->mInnerView) { |
1160 | EndSwapDocShellsForViews(other->mInnerView->GetFirstChild()); |
1161 | } |
1162 | |
1163 | // Now make sure we reflow both frames, in case their contents |
1164 | // determine their size. |
1165 | // And repaint them, for good measure, in case there's nothing |
1166 | // interesting that happens during reflow. |
1167 | if (weakThis.IsAlive()) { |
1168 | PresShell()->FrameNeedsReflow(this, IntrinsicDirty::FrameAndAncestors, |
1169 | NS_FRAME_IS_DIRTY); |
1170 | InvalidateFrameSubtree(); |
1171 | PropagateIsUnderHiddenEmbedderElement( |
1172 | PresShell()->IsUnderHiddenEmbedderElement() || |
1173 | !StyleVisibility()->IsVisible()); |
1174 | } |
1175 | if (weakOther.IsAlive()) { |
1176 | other->PresShell()->FrameNeedsReflow( |
1177 | other, IntrinsicDirty::FrameAndAncestors, NS_FRAME_IS_DIRTY); |
1178 | other->InvalidateFrameSubtree(); |
1179 | other->PropagateIsUnderHiddenEmbedderElement( |
1180 | other->PresShell()->IsUnderHiddenEmbedderElement() || |
1181 | !other->StyleVisibility()->IsVisible()); |
1182 | } |
1183 | } |
1184 | |
1185 | void nsSubDocumentFrame::ClearDisplayItems() { |
1186 | if (auto* builder = nsLayoutUtils::GetRetainedDisplayListBuilder(this)) { |
1187 | DL_LOGD("nsSubDocumentFrame::ClearDisplayItems() %p", this)do { const ::mozilla::LogModule* moz_real_module = GetLoggerByProcess (); if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , LogLevel::Debug)), 0))) { mozilla::detail::log_print(moz_real_module , LogLevel::Debug, "nsSubDocumentFrame::ClearDisplayItems() %p" , this); } } while (0); |
1188 | builder->ClearRetainedData(); |
1189 | } |
1190 | } |
1191 | |
1192 | nsView* nsSubDocumentFrame::EnsureInnerView() { |
1193 | if (mInnerView) { |
1194 | return mInnerView; |
1195 | } |
1196 | |
1197 | // create, init, set the parent of the view |
1198 | nsView* outerView = GetView(); |
1199 | NS_ASSERTION(outerView, "Must have an outer view already")do { if (!(outerView)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Must have an outer view already" , "outerView", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 1199); MOZ_PretendNoReturn(); } } while (0); |
1200 | nsRect viewBounds(0, 0, 0, 0); // size will be fixed during reflow |
1201 | |
1202 | nsViewManager* viewMan = outerView->GetViewManager(); |
1203 | nsView* innerView = viewMan->CreateView(viewBounds, outerView); |
1204 | if (!innerView) { |
1205 | NS_ERROR("Could not create inner view")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "Could not create inner view" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 1205); MOZ_PretendNoReturn(); } while (0); |
1206 | return nullptr; |
1207 | } |
1208 | mInnerView = innerView; |
1209 | viewMan->InsertChild(outerView, innerView, nullptr, true); |
1210 | |
1211 | return mInnerView; |
1212 | } |
1213 | |
1214 | nsPoint nsSubDocumentFrame::GetExtraOffset() const { |
1215 | MOZ_ASSERT(mInnerView)do { static_assert( mozilla::detail::AssertionConditionType< decltype(mInnerView)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(mInnerView))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("mInnerView", "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 1215); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mInnerView" ")"); do { *((volatile int*)__null) = 1215; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
1216 | return mInnerView->GetPosition(); |
1217 | } |
1218 | |
1219 | void nsSubDocumentFrame::SubdocumentIntrinsicSizeOrRatioChanged() { |
1220 | const nsStylePosition* pos = StylePosition(); |
1221 | bool dependsOnIntrinsics = |
1222 | !pos->mWidth.ConvertsToLength() || !pos->mHeight.ConvertsToLength(); |
1223 | |
1224 | if (dependsOnIntrinsics || pos->mObjectFit != StyleObjectFit::Fill) { |
1225 | auto dirtyHint = dependsOnIntrinsics |
1226 | ? IntrinsicDirty::FrameAncestorsAndDescendants |
1227 | : IntrinsicDirty::None; |
1228 | PresShell()->FrameNeedsReflow(this, dirtyHint, NS_FRAME_IS_DIRTY); |
1229 | InvalidateFrame(); |
1230 | } |
1231 | } |
1232 | |
1233 | // Return true iff |aManager| is a "temporary layer manager". They're |
1234 | // used for small software rendering tasks, like drawWindow. That's |
1235 | // currently implemented by a BasicLayerManager without a backing |
1236 | // widget, and hence in non-retained mode. |
1237 | nsDisplayRemote::nsDisplayRemote(nsDisplayListBuilder* aBuilder, |
1238 | nsSubDocumentFrame* aFrame) |
1239 | : nsPaintedDisplayItem(aBuilder, aFrame), |
1240 | mEventRegionsOverride(EventRegionsOverride::NoOverride) { |
1241 | const bool frameIsPointerEventsNone = |
1242 | aFrame->Style()->PointerEvents() == StylePointerEvents::None; |
1243 | if (aBuilder->IsInsidePointerEventsNoneDoc() || frameIsPointerEventsNone) { |
1244 | mEventRegionsOverride |= EventRegionsOverride::ForceEmptyHitRegion; |
1245 | } |
1246 | if (nsLayoutUtils::HasDocumentLevelListenersForApzAwareEvents( |
1247 | aFrame->PresShell())) { |
1248 | mEventRegionsOverride |= EventRegionsOverride::ForceDispatchToContent; |
1249 | } |
1250 | |
1251 | mPaintData = aFrame->GetRemotePaintData(); |
1252 | } |
1253 | |
1254 | namespace mozilla { |
1255 | |
1256 | void nsDisplayRemote::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) { |
1257 | nsPresContext* pc = mFrame->PresContext(); |
1258 | nsFrameLoader* fl = GetFrameLoader(); |
1259 | if (pc->GetPrintSettings() && fl->IsRemoteFrame()) { |
1260 | // See the comment below in CreateWebRenderCommands() as for why doing this. |
1261 | fl->UpdatePositionAndSize(static_cast<nsSubDocumentFrame*>(mFrame)); |
1262 | } |
1263 | |
1264 | DrawTarget* target = aCtx->GetDrawTarget(); |
1265 | if (!target->IsRecording() || mPaintData.mTabId == 0) { |
1266 | NS_WARNING("Remote iframe not rendered")NS_DebugBreak(NS_DEBUG_WARNING, "Remote iframe not rendered", nullptr, "/var/lib/jenkins/workspace/firefox-scan-build/layout/generic/nsSubDocumentFrame.cpp" , 1266); |
1267 | return; |
1268 | } |
1269 | |
1270 | // Rendering the inner document will apply a scale to account for its app |
1271 | // units per dev pixel ratio. We want to apply the inverse scaling using our |
1272 | // app units per dev pixel ratio, so that no actual scaling will be applied if |
1273 | // they match. For in-process rendering, nsSubDocumentFrame creates an |
1274 | // nsDisplayZoom item if the app units per dev pixel ratio changes. |
1275 | // |
1276 | // Similarly, rendering the inner document will scale up by the cross process |
1277 | // paint scale again, so we also need to account for that. |
1278 | const int32_t appUnitsPerDevPixel = pc->AppUnitsPerDevPixel(); |
1279 | |
1280 | gfxContextMatrixAutoSaveRestore saveMatrix(aCtx); |
1281 | gfxFloat targetAuPerDev = |
1282 | gfxFloat(AppUnitsPerCSSPixel()) / aCtx->GetCrossProcessPaintScale(); |
1283 | |
1284 | gfxFloat scale = targetAuPerDev / appUnitsPerDevPixel; |
1285 | aCtx->Multiply(gfxMatrix::Scaling(scale, scale)); |
1286 | |
1287 | Rect destRect = |
1288 | NSRectToSnappedRect(GetContentRect(), targetAuPerDev, *target); |
1289 | target->DrawDependentSurface(mPaintData.mTabId, destRect); |
1290 | } |
1291 | |
1292 | bool nsDisplayRemote::CreateWebRenderCommands( |
1293 | mozilla::wr::DisplayListBuilder& aBuilder, |
1294 | mozilla::wr::IpcResourceUpdateQueue& aResources, |
1295 | const StackingContextHelper& aSc, |
1296 | mozilla::layers::RenderRootStateManager* aManager, |
1297 | nsDisplayListBuilder* aDisplayListBuilder) { |
1298 | if (!mPaintData.mLayersId.IsValid()) { |
1299 | return true; |
1300 | } |
1301 | |
1302 | nsPresContext* pc = mFrame->PresContext(); |
1303 | nsFrameLoader* fl = GetFrameLoader(); |
1304 | |
1305 | auto* subDocFrame = static_cast<nsSubDocumentFrame*>(mFrame); |
1306 | nsRect destRect = subDocFrame->GetDestRect(); |
1307 | if (RefPtr<RemoteBrowser> remoteBrowser = fl->GetRemoteBrowser()) { |
1308 | if (pc->GetPrintSettings()) { |
1309 | // HACK(emilio): Usually we update sizing/positioning from |
1310 | // ReflowFinished(). Print documents have no incremental reflow at all |
1311 | // though, so we can't rely on it firing after a frame becomes remote. |
1312 | // Thus, if we're painting a remote frame, update its sizing and position |
1313 | // now. |
1314 | // |
1315 | // UpdatePositionAndSize() can cause havoc for non-remote frames but |
1316 | // luckily we don't care about those, so this is fine. |
1317 | fl->UpdatePositionAndSize(subDocFrame); |
1318 | } |
1319 | |
1320 | // Adjust mItemVisibleRect, which is relative to the reference frame, to be |
1321 | // relative to this frame. |
1322 | const nsRect buildingRect = GetBuildingRect() - ToReferenceFrame(); |
1323 | Maybe<nsRect> visibleRect = |
1324 | buildingRect.EdgeInclusiveIntersection(destRect); |
1325 | if (visibleRect) { |
1326 | *visibleRect -= destRect.TopLeft(); |
1327 | } |
1328 | |
1329 | // Generate an effects update notifying the browser it is visible |
1330 | MatrixScales scale = aSc.GetInheritedScale(); |
1331 | |
1332 | ParentLayerToScreenScale2D transformToAncestorScale = |
1333 | ParentLayerToParentLayerScale( |
1334 | pc->GetPresShell() ? pc->GetPresShell()->GetCumulativeResolution() |
1335 | : 1.f) * |
1336 | nsLayoutUtils::GetTransformToAncestorScaleCrossProcessForFrameMetrics( |
1337 | mFrame); |
1338 | |
1339 | aDisplayListBuilder->AddEffectUpdate( |
1340 | remoteBrowser, EffectsInfo::VisibleWithinRect( |
1341 | visibleRect, scale, transformToAncestorScale)); |
1342 | |
1343 | // Create a WebRenderRemoteData to notify the RemoteBrowser when it is no |
1344 | // longer visible |
1345 | RefPtr<WebRenderRemoteData> userData = |
1346 | aManager->CommandBuilder() |
1347 | .CreateOrRecycleWebRenderUserData<WebRenderRemoteData>(this, |
1348 | nullptr); |
1349 | userData->SetRemoteBrowser(remoteBrowser); |
1350 | } |
1351 | |
1352 | nscoord auPerDevPixel = pc->AppUnitsPerDevPixel(); |
1353 | nsPoint layerOffset = |
1354 | aDisplayListBuilder->ToReferenceFrame(mFrame) + destRect.TopLeft(); |
1355 | mOffset = LayoutDevicePoint::FromAppUnits(layerOffset, auPerDevPixel); |
1356 | |
1357 | destRect.MoveTo(0, 0); |
1358 | auto rect = LayoutDeviceRect::FromAppUnits(destRect, auPerDevPixel); |
1359 | rect += mOffset; |
1360 | |
1361 | aBuilder.PushIFrame(rect, !BackfaceIsHidden(), |
1362 | mozilla::wr::AsPipelineId(mPaintData.mLayersId), |
1363 | /*ignoreMissingPipelines*/ true); |
1364 | |
1365 | return true; |
1366 | } |
1367 | |
1368 | bool nsDisplayRemote::UpdateScrollData( |
1369 | mozilla::layers::WebRenderScrollData* aData, |
1370 | mozilla::layers::WebRenderLayerScrollData* aLayerData) { |
1371 | if (!mPaintData.mLayersId.IsValid()) { |
1372 | return true; |
1373 | } |
1374 | |
1375 | if (aLayerData) { |
1376 | aLayerData->SetReferentId(mPaintData.mLayersId); |
1377 | |
1378 | auto size = static_cast<nsSubDocumentFrame*>(mFrame)->GetSubdocumentSize(); |
1379 | Matrix4x4 m = Matrix4x4::Translation(mOffset.x, mOffset.y, 0.0); |
1380 | aLayerData->SetTransform(m); |
1381 | aLayerData->SetEventRegionsOverride(mEventRegionsOverride); |
1382 | aLayerData->SetRemoteDocumentSize(LayerIntSize(size.width, size.height)); |
1383 | } |
1384 | return true; |
1385 | } |
1386 | |
1387 | nsFrameLoader* nsDisplayRemote::GetFrameLoader() const { |
1388 | return static_cast<nsSubDocumentFrame*>(mFrame)->FrameLoader(); |
1389 | } |
1390 | |
1391 | } // namespace mozilla |