third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp - Issue 2765503003: Fix position:sticky location bug when scroller is not a stacking context

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Unified Diff: third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

Issue 2765503003: Fix position:sticky location bug when scroller is not a stacking context (Closed)

Patch Set: Add DCHECK, whitespace fix Created 3 years, 9 months ago

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Index: third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

diff --git a/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp b/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

index a67d5daa6b6ed92a786f29761a9469fa43a62f88..90fb2662dd3dc6a1f13060acaa69f07979cac5e0 100644

--- a/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

+++ b/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

@@ -319,7 +319,8 @@ void CompositedLayerMapping::updateStickyConstraints(

LayoutPoint enclosingLayerOffset;

compositingContainer->convertToLayerCoords(ancestorOverflowLayer,

enclosingLayerOffset);

- if (compositingContainer != ancestorOverflowLayer) {

+ DCHECK(!scrollParent() || scrollParent() == ancestorOverflowLayer);

+ if (!scrollParent() && compositingContainer != ancestorOverflowLayer) {

enclosingLayerOffset += LayoutSize(

ancestorOverflowLayer->getScrollableArea()->getScrollOffset());

}