third_party/WebKit/Source/core/paint/PaintLayer.cpp - Issue 2259493004: Fix Compositing of Opaque Scrolling Layers and Add Tests

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Unified Diff: third_party/WebKit/Source/core/paint/PaintLayer.cpp

Issue 2259493004: Fix Compositing of Opaque Scrolling Layers and Add Tests (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 4 years, 4 months ago

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Index: third_party/WebKit/Source/core/paint/PaintLayer.cpp

diff --git a/third_party/WebKit/Source/core/paint/PaintLayer.cpp b/third_party/WebKit/Source/core/paint/PaintLayer.cpp

index e5e5c68cd33972c9ed798ab93c685111967bfc0b..45969269be199e3ee26c9d1b0fdb4d4dbae8f689 100644

--- a/third_party/WebKit/Source/core/paint/PaintLayer.cpp

+++ b/third_party/WebKit/Source/core/paint/PaintLayer.cpp

@@ -2320,6 +2320,19 @@ GraphicsLayer* PaintLayer::graphicsLayerBackingForScrolling() const

}

+bool PaintLayer::shouldPaintBackgroundOntoScrollingContentsLayer() const

+ // TODO(flackr): Add support for painting locally attached background images. https://crbug.com/625882

+ const FillLayer& backgroundLayer = layoutObject()->style()->backgroundLayers();

+ return !isRootLayer()

+ && scrollsOverflow()

+ && !backgroundLayer.image()

+ && !backgroundLayer.next()

+ && (backgroundLayer.attachment() == LocalBackgroundAttachment

+ || backgroundLayer.clip() == PaddingFillBox)

+ && !stackingNode()->hasNegativeZOrderList();

void PaintLayer::ensureCompositedLayerMapping()

{

if (m_rareData && m_rareData->compositedLayerMapping)