зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1417601
- Override dirty rect for OOF frames with containing block outside a modified stacking context r=mattwoodrow
MozReview-Commit-ID: DqvdDECU7dM --HG-- extra : rebase_source : 3abb1741d8fec40249a4450ed3e867691c490f95 extra : intermediate-source : 0ac00e0c1d107480da7c387ac6969f4eafd96475 extra : source : e88d129b7a6d372adddb781b8e6384f70c08c380
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fcb1dba461
Коммит
3b508a2e1b
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@ -1119,12 +1119,30 @@ nsDisplayListBuilder::FindAnimatedGeometryRootFor(nsDisplayItem* aItem)
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return FindAnimatedGeometryRootFor(aItem->Frame());
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}
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static bool
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AnyContentAncestorModified(nsIFrame* aFrame,
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nsIFrame* aStopAtFrame = nullptr)
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{
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for (nsIFrame* f = aFrame; f;
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f = nsLayoutUtils::GetParentOrPlaceholderForCrossDoc(f)) {
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if (f->IsFrameModified()) {
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return true;
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}
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if (aStopAtFrame && f == aStopAtFrame) {
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break;
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}
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}
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return false;
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}
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void nsDisplayListBuilder::MarkOutOfFlowFrameForDisplay(nsIFrame* aDirtyFrame,
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nsIFrame* aFrame)
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{
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nsRect visible = GetVisibleRect();
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nsRect dirtyRectRelativeToDirtyFrame = GetDirtyRect();
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if (nsLayoutUtils::IsFixedPosFrameInDisplayPort(aFrame) &&
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IsPaintingToWindow()) {
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NS_ASSERTION(aDirtyFrame == aFrame->GetParent(), "Dirty frame should be viewport frame");
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@ -1168,6 +1186,14 @@ void nsDisplayListBuilder::MarkOutOfFlowFrameForDisplay(nsIFrame* aDirtyFrame,
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return;
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}
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// If the nearest stacking context for the modified frame is an ancestor of
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// of it, and if the stacking context is a descendant of the containing block
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// of this OOF frame, we override the dirty rect to ensure that the frame will
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// get marked.
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if (AnyContentAncestorModified(aFrame, aDirtyFrame)) {
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dirty = visible;
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}
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// Always store OutOfFlowDisplayData for visible frames (even when they aren't dirty)
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// since a nested out-of-flow frame might force building and we'll need to have this
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// data available.
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@ -0,0 +1,23 @@
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<style>
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#modified {
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left: 10px;
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}
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</style>
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</head>
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<body>
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<div style="opacity:0.9">
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<div style="position:fixed; left:300px; top:300px; width:200px; height:200px; background-color:red; z-index:-10"></div>
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<div style="width:200px; height:200px; position:relative; background-color:green" id="modified">
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<div style="opacity:0.9">
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<div style="position:fixed; left:300px; top:300px; width:200px; height:200px; background-color:green; z-index:-10"></div>
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</div>
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</div>
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</div>
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</body>
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</html>
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@ -0,0 +1,32 @@
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<!DOCTYPE html>
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<html class="reftest-wait">
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<head>
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<meta charset="UTF-8">
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<style>
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#modified {
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left: 0px;
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}
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</style>
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<script type="text/javascript">
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function doTest() {
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document.getElementById("modified").style.left = "10px";
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document.documentElement.removeAttribute("class");
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}
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window.addEventListener("MozReftestInvalidate", doTest);
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</script>
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</head>
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<body>
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<div style="opacity:0.9">
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<div style="position:fixed; left:300px; top:300px; width:200px; height:200px; background-color:red; z-index:-10"></div>
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<div style="width:200px; height:200px; position:relative; background-color:green" id="modified">
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<div style="opacity:0.9">
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<div style="position:fixed; left:300px; top:300px; width:200px; height:200px; background-color:green; z-index:-10"></div>
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</div>
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</div>
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</div>
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</body>
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</html>
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@ -10,3 +10,4 @@ skip-if(!retainedDisplayList) == retained-dl-prerender-transform-1.html retained
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== retained-dl-wrap-list.html retained-dl-wrap-list-ref.html
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fuzzy(1,235200) == 1413073.html 1413073-ref.html
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== 1416291.html 1416291-ref.html
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== 1417601-1.html 1417601-1-ref.html
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