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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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222 bool allocateOrClearCompositedLayerMapping(RenderLayer*); | 222 bool allocateOrClearCompositedLayerMapping(RenderLayer*); |
223 | 223 |
224 void clearMappingForRenderLayerIncludingDescendants(RenderLayer*); | 224 void clearMappingForRenderLayerIncludingDescendants(RenderLayer*); |
225 | 225 |
226 // Repaint the given rect (which is layer's coords), and regions of child la
yers that intersect that rect. | 226 // Repaint the given rect (which is layer's coords), and regions of child la
yers that intersect that rect. |
227 void recursiveRepaintLayer(RenderLayer*, const IntRect* = 0); | 227 void recursiveRepaintLayer(RenderLayer*, const IntRect* = 0); |
228 | 228 |
229 void addToOverlapMap(OverlapMap&, RenderLayer*, IntRect& layerBounds, bool&
boundsComputed); | 229 void addToOverlapMap(OverlapMap&, RenderLayer*, IntRect& layerBounds, bool&
boundsComputed); |
230 void addToOverlapMapRecursive(OverlapMap&, RenderLayer*, RenderLayer* ancest
orLayer = 0); | 230 void addToOverlapMapRecursive(OverlapMap&, RenderLayer*, RenderLayer* ancest
orLayer = 0); |
231 | 231 |
| 232 struct SquashingState { |
| 233 SquashingState() |
| 234 : mostRecentMapping(0) |
| 235 , hasMostRecentMapping(false) |
| 236 , nextSquashedLayerIndex(0) { } |
| 237 |
| 238 void updateSquashingStateForNewMapping(CompositedLayerMappingPtr, bool h
asNewCompositedLayerMapping, IntPoint newOffsetFromAbsolute); |
| 239 |
| 240 // The most recent composited backing that the layer should squash onto
if needed. |
| 241 CompositedLayerMappingPtr mostRecentMapping; |
| 242 bool hasMostRecentMapping; |
| 243 |
| 244 // Offset in absolute coordinates of the compositedLayerMapping's owning
layer. |
| 245 IntPoint offsetFromAbsolute; |
| 246 |
| 247 // Counter that tracks what index the next RenderLayer would be if it ge
ts squashed to the current squashing layer. |
| 248 size_t nextSquashedLayerIndex; |
| 249 }; |
| 250 |
232 // Forces an update for all frames of frame tree recursively. Used only when
the mainFrame compositor is ready to | 251 // Forces an update for all frames of frame tree recursively. Used only when
the mainFrame compositor is ready to |
233 // finish all deferred work. | 252 // finish all deferred work. |
234 static void finishCompositingUpdateForFrameTree(Frame*); | 253 static void finishCompositingUpdateForFrameTree(Frame*); |
235 | 254 |
236 // Returns true if any layer's compositing changed | 255 // Returns true if any layer's compositing changed |
237 void computeCompositingRequirements(RenderLayer* ancestorLayer, RenderLayer*
, OverlapMap*, struct CompositingRecursionData&, bool& descendantHas3DTransform,
Vector<RenderLayer*>& unclippedDescendants); | 256 void computeCompositingRequirements(RenderLayer* ancestorLayer, RenderLayer*
, OverlapMap*, struct CompositingRecursionData&, bool& descendantHas3DTransform,
Vector<RenderLayer*>& unclippedDescendants); |
238 | 257 |
239 // Defines which RenderLayers will paint into which composited backings, by
allocating and destroying CompositedLayerMappings as needed. | 258 // Defines which RenderLayers will paint into which composited backings, by
allocating and destroying CompositedLayerMappings as needed. |
240 void assignLayersToBackings(RenderLayer*, bool& layersChanged); | 259 void assignLayersToBackings(RenderLayer*, bool& layersChanged); |
241 void assignLayersToBackingsInternal(RenderLayer*, bool& layersChanged); | 260 void assignLayersToBackingsInternal(RenderLayer*, SquashingState&, bool& lay
ersChanged); |
242 | 261 |
243 // Recurses down the tree, parenting descendant compositing layers and colle
cting an array of child layers for the current compositing layer. | 262 // Recurses down the tree, parenting descendant compositing layers and colle
cting an array of child layers for the current compositing layer. |
244 void rebuildCompositingLayerTree(RenderLayer*, Vector<GraphicsLayer*>& child
GraphicsLayersOfEnclosingLayer, int depth); | 263 void rebuildCompositingLayerTree(RenderLayer*, Vector<GraphicsLayer*>& child
GraphicsLayersOfEnclosingLayer, int depth); |
245 | 264 |
246 // Recurses down the tree, updating layer geometry only. | 265 // Recurses down the tree, updating layer geometry only. |
247 void updateLayerTreeGeometry(RenderLayer*); | 266 void updateLayerTreeGeometry(RenderLayer*); |
248 | 267 |
249 // Hook compositing layers together | 268 // Hook compositing layers together |
250 void setCompositingParent(RenderLayer* childLayer, RenderLayer* parentLayer)
; | 269 void setCompositingParent(RenderLayer* childLayer, RenderLayer* parentLayer)
; |
251 void removeCompositedChildren(RenderLayer*); | 270 void removeCompositedChildren(RenderLayer*); |
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344 OwnPtr<GraphicsLayer> m_layerForScrollCorner; | 363 OwnPtr<GraphicsLayer> m_layerForScrollCorner; |
345 #if USE(RUBBER_BANDING) | 364 #if USE(RUBBER_BANDING) |
346 OwnPtr<GraphicsLayer> m_layerForOverhangShadow; | 365 OwnPtr<GraphicsLayer> m_layerForOverhangShadow; |
347 #endif | 366 #endif |
348 }; | 367 }; |
349 | 368 |
350 | 369 |
351 } // namespace WebCore | 370 } // namespace WebCore |
352 | 371 |
353 #endif // RenderLayerCompositor_h | 372 #endif // RenderLayerCompositor_h |
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