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Side by Side Diff: Source/core/rendering/RenderLayer.cpp

Issue 103213002: position:sticky should stick for the enclosing overflow ancestor (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 7 years ago
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1 /* 1 /*
2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved. 2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
3 * 3 *
4 * Portions are Copyright (C) 1998 Netscape Communications Corporation. 4 * Portions are Copyright (C) 1998 Netscape Communications Corporation.
5 * 5 *
6 * Other contributors: 6 * Other contributors:
7 * Robert O'Callahan <roc+@cs.cmu.edu> 7 * Robert O'Callahan <roc+@cs.cmu.edu>
8 * David Baron <dbaron@fas.harvard.edu> 8 * David Baron <dbaron@fas.harvard.edu>
9 * Christian Biesinger <cbiesinger@web.de> 9 * Christian Biesinger <cbiesinger@web.de>
10 * Randall Jesup <rjesup@wgate.com> 10 * Randall Jesup <rjesup@wgate.com>
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602 602
603 if (paintBehavior & PaintBehaviorFlattenCompositingLayers) { 603 if (paintBehavior & PaintBehaviorFlattenCompositingLayers) {
604 TransformationMatrix matrix = *m_transform; 604 TransformationMatrix matrix = *m_transform;
605 makeMatrixRenderable(matrix, false /* flatten 3d */); 605 makeMatrixRenderable(matrix, false /* flatten 3d */);
606 return matrix; 606 return matrix;
607 } 607 }
608 608
609 return *m_transform; 609 return *m_transform;
610 } 610 }
611 611
612 RenderLayer* RenderLayer::enclosingOverflowClipLayer(bool includeSelf) const
613 {
614 const RenderLayer* layer = includeSelf ? this : parent();
615 while (layer) {
616 if (layer->renderer()->hasOverflowClip())
617 return const_cast<RenderLayer*>(layer);
618
619 layer = layer->parent();
620 }
621 return 0;
622 }
623
612 static bool checkContainingBlockChainForPagination(RenderLayerModelObject* rende rer, RenderBox* ancestorColumnsRenderer) 624 static bool checkContainingBlockChainForPagination(RenderLayerModelObject* rende rer, RenderBox* ancestorColumnsRenderer)
613 { 625 {
614 RenderView* view = renderer->view(); 626 RenderView* view = renderer->view();
615 RenderLayerModelObject* prevBlock = renderer; 627 RenderLayerModelObject* prevBlock = renderer;
616 RenderBlock* containingBlock; 628 RenderBlock* containingBlock;
617 for (containingBlock = renderer->containingBlock(); 629 for (containingBlock = renderer->containingBlock();
618 containingBlock && containingBlock != view && containingBlock != ancest orColumnsRenderer; 630 containingBlock && containingBlock != view && containingBlock != ancest orColumnsRenderer;
619 containingBlock = containingBlock->containingBlock()) 631 containingBlock = containingBlock->containingBlock())
620 prevBlock = containingBlock; 632 prevBlock = containingBlock;
621 633
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4160 } 4172 }
4161 } 4173 }
4162 4174
4163 void showLayerTree(const WebCore::RenderObject* renderer) 4175 void showLayerTree(const WebCore::RenderObject* renderer)
4164 { 4176 {
4165 if (!renderer) 4177 if (!renderer)
4166 return; 4178 return;
4167 showLayerTree(renderer->enclosingLayer()); 4179 showLayerTree(renderer->enclosingLayer());
4168 } 4180 }
4169 #endif 4181 #endif
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