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1 /* | 1 /* |
2 * Copyright (C) 2009, 2010 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009, 2010 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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756 { | 756 { |
757 const bool hasCompositorAnimation = m_compositingReasonFinder.requiresCompos
itingForAnimation(*layer->layoutObject()->style()); | 757 const bool hasCompositorAnimation = m_compositingReasonFinder.requiresCompos
itingForAnimation(*layer->layoutObject()->style()); |
758 return m_hasAcceleratedCompositing && (hasCompositorAnimation || !layer->sub
treeIsInvisible()) && layer->isSelfPaintingLayer() && !layer->layoutObject()->is
LayoutFlowThread(); | 758 return m_hasAcceleratedCompositing && (hasCompositorAnimation || !layer->sub
treeIsInvisible()) && layer->isSelfPaintingLayer() && !layer->layoutObject()->is
LayoutFlowThread(); |
759 } | 759 } |
760 | 760 |
761 // Return true if the given layer is a stacking context and has compositing chil
d | 761 // Return true if the given layer is a stacking context and has compositing chil
d |
762 // layers that it needs to clip. In this case we insert a clipping GraphicsLayer | 762 // layers that it needs to clip. In this case we insert a clipping GraphicsLayer |
763 // into the hierarchy between this layer and its children in the z-order hierarc
hy. | 763 // into the hierarchy between this layer and its children in the z-order hierarc
hy. |
764 bool PaintLayerCompositor::clipsCompositingDescendants(const PaintLayer* layer)
const | 764 bool PaintLayerCompositor::clipsCompositingDescendants(const PaintLayer* layer)
const |
765 { | 765 { |
766 return layer->hasCompositingDescendant() && layer->layoutObject()->hasClipOr
OverflowClip(); | 766 return layer->hasCompositingDescendant() && layer->layoutObject()->hasOverfl
owClipPaintContainmentOrClip(); |
767 } | 767 } |
768 | 768 |
769 // If an element has composited negative z-index children, those children paint
in front of the | 769 // If an element has composited negative z-index children, those children paint
in front of the |
770 // layer background, so we need an extra 'contents' layer for the foreground of
the layer | 770 // layer background, so we need an extra 'contents' layer for the foreground of
the layer |
771 // object. | 771 // object. |
772 bool PaintLayerCompositor::needsContentsCompositingLayer(const PaintLayer* layer
) const | 772 bool PaintLayerCompositor::needsContentsCompositingLayer(const PaintLayer* layer
) const |
773 { | 773 { |
774 if (!layer->hasCompositingDescendant()) | 774 if (!layer->hasCompositingDescendant()) |
775 return false; | 775 return false; |
776 return layer->stackingNode()->hasNegativeZOrderList(); | 776 return layer->stackingNode()->hasNegativeZOrderList(); |
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1192 } else if (graphicsLayer == m_scrollLayer.get()) { | 1192 } else if (graphicsLayer == m_scrollLayer.get()) { |
1193 name = "Frame Scrolling Layer"; | 1193 name = "Frame Scrolling Layer"; |
1194 } else { | 1194 } else { |
1195 ASSERT_NOT_REACHED(); | 1195 ASSERT_NOT_REACHED(); |
1196 } | 1196 } |
1197 | 1197 |
1198 return name; | 1198 return name; |
1199 } | 1199 } |
1200 | 1200 |
1201 } // namespace blink | 1201 } // namespace blink |
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