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1 /* | 1 /* |
2 * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009, 2010, 2011 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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302 if (!context->hasAlpha()) | 302 if (!context->hasAlpha()) |
303 m_graphicsLayer->setContentsOpaque(true); | 303 m_graphicsLayer->setContentsOpaque(true); |
304 else if (WebLayer* layer = context->platformLayer()) | 304 else if (WebLayer* layer = context->platformLayer()) |
305 m_graphicsLayer->setContentsOpaque(!Color(layer->backgroundColor()).
hasAlpha()); | 305 m_graphicsLayer->setContentsOpaque(!Color(layer->backgroundColor()).
hasAlpha()); |
306 else | 306 else |
307 m_graphicsLayer->setContentsOpaque(false); | 307 m_graphicsLayer->setContentsOpaque(false); |
308 } else if (m_backgroundLayer) { | 308 } else if (m_backgroundLayer) { |
309 m_graphicsLayer->setContentsOpaque(false); | 309 m_graphicsLayer->setContentsOpaque(false); |
310 m_backgroundLayer->setContentsOpaque(m_owningLayer.backgroundIsKnownToBe
OpaqueInRect(compositedBounds())); | 310 m_backgroundLayer->setContentsOpaque(m_owningLayer.backgroundIsKnownToBe
OpaqueInRect(compositedBounds())); |
311 } else { | 311 } else { |
312 // For non-root layers, background is always painted by the primary grap
hics layer. | 312 // For non-root layers, background is painted by the scrolling contents
layer if all backgrounds |
| 313 // are background attachment local, otherwise background is painted by t
he primary graphics layer. |
| 314 if (hasScrollingLayer() && m_owningLayer.shouldPaintBackgroundOntoForegr
ound()) { |
| 315 // Backgrounds painted onto the foreground are clipped by the paddin
g box rect. |
| 316 // TODO(flackr): This should actually check the entire overflow rect
within the |
| 317 // scrolling contents layer but since we currently only trigger this
for solid |
| 318 // color backgrounds the answer will be the same. |
| 319 m_scrollingContentsLayer->setContentsOpaque(m_owningLayer.background
IsKnownToBeOpaqueInRect(toLayoutBox(layoutObject())->paddingBoxRect())); |
| 320 } |
| 321 // The border is always painted into the m_graphicsLayer, so we check if
it is known to be |
| 322 // opaque separately. |
313 m_graphicsLayer->setContentsOpaque(m_owningLayer.backgroundIsKnownToBeOp
aqueInRect(compositedBounds())); | 323 m_graphicsLayer->setContentsOpaque(m_owningLayer.backgroundIsKnownToBeOp
aqueInRect(compositedBounds())); |
314 } | 324 } |
315 } | 325 } |
316 | 326 |
317 void CompositedLayerMapping::updateCompositedBounds() | 327 void CompositedLayerMapping::updateCompositedBounds() |
318 { | 328 { |
319 ASSERT(m_owningLayer.compositor()->lifecycle().state() == DocumentLifecycle:
:InCompositingUpdate); | 329 ASSERT(m_owningLayer.compositor()->lifecycle().state() == DocumentLifecycle:
:InCompositingUpdate); |
320 // FIXME: if this is really needed for performance, it would be better to st
ore it on Layer. | 330 // FIXME: if this is really needed for performance, it would be better to st
ore it on Layer. |
321 m_compositedBounds = m_owningLayer.boundingBoxForCompositing(); | 331 m_compositedBounds = m_owningLayer.boundingBoxForCompositing(); |
322 m_contentOffsetInCompositingLayerDirty = true; | 332 m_contentOffsetInCompositingLayerDirty = true; |
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2414 if (graphicsLayerPaintingPhase & GraphicsLayerPaintBackground) | 2424 if (graphicsLayerPaintingPhase & GraphicsLayerPaintBackground) |
2415 paintLayerFlags |= PaintLayerPaintingCompositingBackgroundPhase; | 2425 paintLayerFlags |= PaintLayerPaintingCompositingBackgroundPhase; |
2416 if (graphicsLayerPaintingPhase & GraphicsLayerPaintForeground) | 2426 if (graphicsLayerPaintingPhase & GraphicsLayerPaintForeground) |
2417 paintLayerFlags |= PaintLayerPaintingCompositingForegroundPhase; | 2427 paintLayerFlags |= PaintLayerPaintingCompositingForegroundPhase; |
2418 if (graphicsLayerPaintingPhase & GraphicsLayerPaintMask) | 2428 if (graphicsLayerPaintingPhase & GraphicsLayerPaintMask) |
2419 paintLayerFlags |= PaintLayerPaintingCompositingMaskPhase; | 2429 paintLayerFlags |= PaintLayerPaintingCompositingMaskPhase; |
2420 if (graphicsLayerPaintingPhase & GraphicsLayerPaintChildClippingMask) | 2430 if (graphicsLayerPaintingPhase & GraphicsLayerPaintChildClippingMask) |
2421 paintLayerFlags |= PaintLayerPaintingChildClippingMaskPhase; | 2431 paintLayerFlags |= PaintLayerPaintingChildClippingMaskPhase; |
2422 if (graphicsLayerPaintingPhase & GraphicsLayerPaintOverflowContents) | 2432 if (graphicsLayerPaintingPhase & GraphicsLayerPaintOverflowContents) |
2423 paintLayerFlags |= PaintLayerPaintingOverflowContents; | 2433 paintLayerFlags |= PaintLayerPaintingOverflowContents; |
2424 if (graphicsLayerPaintingPhase & GraphicsLayerPaintCompositedScroll) | 2434 if (graphicsLayerPaintingPhase & GraphicsLayerPaintCompositedScroll) { |
2425 paintLayerFlags |= PaintLayerPaintingCompositingScrollingPhase; | 2435 paintLayerFlags |= PaintLayerPaintingCompositingScrollingPhase; |
| 2436 if (m_owningLayer.shouldPaintBackgroundOntoForeground()) |
| 2437 paintLayerFlags |= PaintLayerPaintingBackgroundOntoForeground; |
| 2438 } |
2426 | 2439 |
2427 if (graphicsLayer == m_backgroundLayer.get()) | 2440 if (graphicsLayer == m_backgroundLayer.get()) |
2428 paintLayerFlags |= (PaintLayerPaintingRootBackgroundOnly | PaintLayerPai
ntingCompositingForegroundPhase); // Need PaintLayerPaintingCompositingForegroun
dPhase to walk child layers. | 2441 paintLayerFlags |= (PaintLayerPaintingRootBackgroundOnly | PaintLayerPai
ntingCompositingForegroundPhase); // Need PaintLayerPaintingCompositingForegroun
dPhase to walk child layers. |
2429 else if (compositor()->fixedRootBackgroundLayer()) | 2442 else if (compositor()->fixedRootBackgroundLayer()) |
2430 paintLayerFlags |= PaintLayerPaintingSkipRootBackground; | 2443 paintLayerFlags |= PaintLayerPaintingSkipRootBackground; |
2431 | 2444 |
2432 if (graphicsLayer == m_graphicsLayer.get() | 2445 if (graphicsLayer == m_graphicsLayer.get() |
2433 || graphicsLayer == m_foregroundLayer.get() | 2446 || graphicsLayer == m_foregroundLayer.get() |
2434 || graphicsLayer == m_backgroundLayer.get() | 2447 || graphicsLayer == m_backgroundLayer.get() |
2435 || graphicsLayer == m_maskLayer.get() | 2448 || graphicsLayer == m_maskLayer.get() |
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2660 } else if (graphicsLayer == m_scrollingContentsLayer.get()) { | 2673 } else if (graphicsLayer == m_scrollingContentsLayer.get()) { |
2661 name = "Scrolling Contents Layer"; | 2674 name = "Scrolling Contents Layer"; |
2662 } else { | 2675 } else { |
2663 ASSERT_NOT_REACHED(); | 2676 ASSERT_NOT_REACHED(); |
2664 } | 2677 } |
2665 | 2678 |
2666 return name; | 2679 return name; |
2667 } | 2680 } |
2668 | 2681 |
2669 } // namespace blink | 2682 } // namespace blink |
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