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Side by Side Diff: Source/core/rendering/RenderLayerCompositor.h

Issue 13462003: Add support for accelerated fixed root background (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@background-attachment-fixed2
Patch Set: Moved the layout tests. Created 7 years, 6 months ago
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1 /* 1 /*
2 * Copyright (C) 2009 Apple Inc. All rights reserved. 2 * Copyright (C) 2009 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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105 // Whether layer's backing needs a graphics layer to do clipping by an ances tor (non-stacking-context parent with overflow). 105 // Whether layer's backing needs a graphics layer to do clipping by an ances tor (non-stacking-context parent with overflow).
106 bool clippedByAncestor(RenderLayer*) const; 106 bool clippedByAncestor(RenderLayer*) const;
107 // Whether layer's backing needs a graphics layer to clip z-order children o f the given layer. 107 // Whether layer's backing needs a graphics layer to clip z-order children o f the given layer.
108 bool clipsCompositingDescendants(const RenderLayer*) const; 108 bool clipsCompositingDescendants(const RenderLayer*) const;
109 109
110 // Whether the given layer needs an extra 'contents' layer. 110 // Whether the given layer needs an extra 'contents' layer.
111 bool needsContentsCompositingLayer(const RenderLayer*) const; 111 bool needsContentsCompositingLayer(const RenderLayer*) const;
112 112
113 bool supportsFixedRootBackgroundCompositing() const; 113 bool supportsFixedRootBackgroundCompositing() const;
114 bool needsFixedRootBackgroundLayer(const RenderLayer*) const; 114 bool needsFixedRootBackgroundLayer(const RenderLayer*) const;
115 GraphicsLayer* fixedRootBackgroundLayer() const;
116 115
117 // Return the bounding box required for compositing layer and its childern, relative to ancestorLayer. 116 // Return the bounding box required for compositing layer and its childern, relative to ancestorLayer.
118 // If layerBoundingBox is not 0, on return it contains the bounding box of t his layer only. 117 // If layerBoundingBox is not 0, on return it contains the bounding box of t his layer only.
119 IntRect calculateCompositedBounds(const RenderLayer*, const RenderLayer* anc estorLayer) const; 118 IntRect calculateCompositedBounds(const RenderLayer*, const RenderLayer* anc estorLayer) const;
120 119
121 // Repaint the appropriate layers when the given RenderLayer starts or stops being composited. 120 // Repaint the appropriate layers when the given RenderLayer starts or stops being composited.
122 void repaintOnCompositingChange(RenderLayer*); 121 void repaintOnCompositingChange(RenderLayer*);
123 122
124 void repaintInCompositedAncestor(RenderLayer*, const LayoutRect&); 123 void repaintInCompositedAncestor(RenderLayer*, const LayoutRect&);
125 124
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364 int m_secondaryCompositedLayerCount; // count of layers that have to be comp osited because of stacking or overlap. 363 int m_secondaryCompositedLayerCount; // count of layers that have to be comp osited because of stacking or overlap.
365 double m_obligatoryBackingStoreBytes; 364 double m_obligatoryBackingStoreBytes;
366 double m_secondaryBackingStoreBytes; 365 double m_secondaryBackingStoreBytes;
367 #endif 366 #endif
368 }; 367 };
369 368
370 369
371 } // namespace WebCore 370 } // namespace WebCore
372 371
373 #endif // RenderLayerCompositor_h 372 #endif // RenderLayerCompositor_h
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