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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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| 176 | 176 |
| 177 bool scrollingLayerDidChange(RenderLayer*); | 177 bool scrollingLayerDidChange(RenderLayer*); |
| 178 | 178 |
| 179 String layerTreeAsText(LayerTreeFlags); | 179 String layerTreeAsText(LayerTreeFlags); |
| 180 | 180 |
| 181 virtual void didCommitChangesForLayer(const GraphicsLayer*) const OVERRIDE; | 181 virtual void didCommitChangesForLayer(const GraphicsLayer*) const OVERRIDE; |
| 182 | 182 |
| 183 GraphicsLayer* layerForHorizontalScrollbar() const { return m_layerForHorizo
ntalScrollbar.get(); } | 183 GraphicsLayer* layerForHorizontalScrollbar() const { return m_layerForHorizo
ntalScrollbar.get(); } |
| 184 GraphicsLayer* layerForVerticalScrollbar() const { return m_layerForVertical
Scrollbar.get(); } | 184 GraphicsLayer* layerForVerticalScrollbar() const { return m_layerForVertical
Scrollbar.get(); } |
| 185 GraphicsLayer* layerForScrollCorner() const { return m_layerForScrollCorner.
get(); } | 185 GraphicsLayer* layerForScrollCorner() const { return m_layerForScrollCorner.
get(); } |
| 186 #if ENABLE(RUBBER_BANDING) | 186 #if USE(RUBBER_BANDING) |
| 187 GraphicsLayer* layerForOverhangAreas() const { return m_layerForOverhangArea
s.get(); } | 187 GraphicsLayer* layerForOverhangAreas() const { return m_layerForOverhangArea
s.get(); } |
| 188 | 188 |
| 189 GraphicsLayer* updateLayerForTopOverhangArea(bool wantsLayer); | 189 GraphicsLayer* updateLayerForTopOverhangArea(bool wantsLayer); |
| 190 GraphicsLayer* updateLayerForBottomOverhangArea(bool wantsLayer); | 190 GraphicsLayer* updateLayerForBottomOverhangArea(bool wantsLayer); |
| 191 #endif | 191 #endif |
| 192 | 192 |
| 193 void updateViewportConstraintStatus(RenderLayer*); | 193 void updateViewportConstraintStatus(RenderLayer*); |
| 194 void removeViewportConstrainedLayer(RenderLayer*); | 194 void removeViewportConstrainedLayer(RenderLayer*); |
| 195 | 195 |
| 196 void addOutOfFlowPositionedLayer(RenderLayer*); | 196 void addOutOfFlowPositionedLayer(RenderLayer*); |
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| 291 bool requiresCompositingForOverflowScrolling(const RenderLayer*) const; | 291 bool requiresCompositingForOverflowScrolling(const RenderLayer*) const; |
| 292 | 292 |
| 293 void addViewportConstrainedLayer(RenderLayer*); | 293 void addViewportConstrainedLayer(RenderLayer*); |
| 294 | 294 |
| 295 FixedPositionViewportConstraints computeFixedViewportConstraints(RenderLayer
*) const; | 295 FixedPositionViewportConstraints computeFixedViewportConstraints(RenderLayer
*) const; |
| 296 StickyPositionViewportConstraints computeStickyViewportConstraints(RenderLay
er*) const; | 296 StickyPositionViewportConstraints computeStickyViewportConstraints(RenderLay
er*) const; |
| 297 | 297 |
| 298 bool requiresHorizontalScrollbarLayer() const; | 298 bool requiresHorizontalScrollbarLayer() const; |
| 299 bool requiresVerticalScrollbarLayer() const; | 299 bool requiresVerticalScrollbarLayer() const; |
| 300 bool requiresScrollCornerLayer() const; | 300 bool requiresScrollCornerLayer() const; |
| 301 #if ENABLE(RUBBER_BANDING) | 301 #if USE(RUBBER_BANDING) |
| 302 bool requiresOverhangLayers() const; | 302 bool requiresOverhangLayers() const; |
| 303 #endif | 303 #endif |
| 304 | 304 |
| 305 #if !LOG_DISABLED | 305 #if !LOG_DISABLED |
| 306 const char* logReasonsForCompositing(const RenderLayer*); | 306 const char* logReasonsForCompositing(const RenderLayer*); |
| 307 void logLayerInfo(const RenderLayer*, int depth); | 307 void logLayerInfo(const RenderLayer*, int depth); |
| 308 #endif | 308 #endif |
| 309 | 309 |
| 310 private: | 310 private: |
| 311 RenderView* m_renderView; | 311 RenderView* m_renderView; |
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| 342 // walks while determining if layers have unclipped descendants. | 342 // walks while determining if layers have unclipped descendants. |
| 343 HashSet<RenderLayer*> m_outOfFlowPositionedLayers; | 343 HashSet<RenderLayer*> m_outOfFlowPositionedLayers; |
| 344 | 344 |
| 345 // Enclosing layer for overflow controls and the clipping layer | 345 // Enclosing layer for overflow controls and the clipping layer |
| 346 OwnPtr<GraphicsLayer> m_overflowControlsHostLayer; | 346 OwnPtr<GraphicsLayer> m_overflowControlsHostLayer; |
| 347 | 347 |
| 348 // Layers for overflow controls | 348 // Layers for overflow controls |
| 349 OwnPtr<GraphicsLayer> m_layerForHorizontalScrollbar; | 349 OwnPtr<GraphicsLayer> m_layerForHorizontalScrollbar; |
| 350 OwnPtr<GraphicsLayer> m_layerForVerticalScrollbar; | 350 OwnPtr<GraphicsLayer> m_layerForVerticalScrollbar; |
| 351 OwnPtr<GraphicsLayer> m_layerForScrollCorner; | 351 OwnPtr<GraphicsLayer> m_layerForScrollCorner; |
| 352 #if ENABLE(RUBBER_BANDING) | 352 #if USE(RUBBER_BANDING) |
| 353 OwnPtr<GraphicsLayer> m_layerForOverhangAreas; | 353 OwnPtr<GraphicsLayer> m_layerForOverhangAreas; |
| 354 OwnPtr<GraphicsLayer> m_layerForOverhangShadow; | 354 OwnPtr<GraphicsLayer> m_layerForOverhangShadow; |
| 355 #endif | 355 #endif |
| 356 | 356 |
| 357 #if !LOG_DISABLED | 357 #if !LOG_DISABLED |
| 358 int m_rootLayerUpdateCount; | 358 int m_rootLayerUpdateCount; |
| 359 int m_obligateCompositedLayerCount; // count of layer that have to be compos
ited. | 359 int m_obligateCompositedLayerCount; // count of layer that have to be compos
ited. |
| 360 int m_secondaryCompositedLayerCount; // count of layers that have to be comp
osited because of stacking or overlap. | 360 int m_secondaryCompositedLayerCount; // count of layers that have to be comp
osited because of stacking or overlap. |
| 361 double m_obligatoryBackingStoreBytes; | 361 double m_obligatoryBackingStoreBytes; |
| 362 double m_secondaryBackingStoreBytes; | 362 double m_secondaryBackingStoreBytes; |
| 363 #endif | 363 #endif |
| 364 }; | 364 }; |
| 365 | 365 |
| 366 | 366 |
| 367 } // namespace WebCore | 367 } // namespace WebCore |
| 368 | 368 |
| 369 #endif // RenderLayerCompositor_h | 369 #endif // RenderLayerCompositor_h |
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