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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 m_graphicsLayer->setContentsOpaque(m_owningLayer.backgroundIsKnownToBeOp aqueInRect(compositedBounds())); | 313 // are background attachment local, otherwise background is painted by t he primary graphics layer. |
314 if (hasScrollingLayer() && m_owningLayer.shouldPaintBackgroundOntoScroll ingContentsLayer()) { | |
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 // When we paint the background onto the scrolling contents layer we are going | |
322 // to leave a hole in the m_graphicsLayer where the background is so it is | |
323 // not opaque. | |
324 m_graphicsLayer->setContentsOpaque(false); | |
325 } else { | |
326 m_graphicsLayer->setContentsOpaque(m_owningLayer.backgroundIsKnownTo BeOpaqueInRect(compositedBounds())); | |
327 } | |
314 } | 328 } |
315 } | 329 } |
316 | 330 |
317 void CompositedLayerMapping::updateCompositedBounds() | 331 void CompositedLayerMapping::updateCompositedBounds() |
318 { | 332 { |
319 ASSERT(m_owningLayer.compositor()->lifecycle().state() == DocumentLifecycle: :InCompositingUpdate); | 333 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. | 334 // FIXME: if this is really needed for performance, it would be better to st ore it on Layer. |
321 m_compositedBounds = m_owningLayer.boundingBoxForCompositing(); | 335 m_compositedBounds = m_owningLayer.boundingBoxForCompositing(); |
322 m_contentOffsetInCompositingLayerDirty = true; | 336 m_contentOffsetInCompositingLayerDirty = true; |
323 } | 337 } |
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2419 paintLayerFlags |= PaintLayerPaintingCompositingMaskPhase; | 2433 paintLayerFlags |= PaintLayerPaintingCompositingMaskPhase; |
2420 if (graphicsLayerPaintingPhase & GraphicsLayerPaintChildClippingMask) | 2434 if (graphicsLayerPaintingPhase & GraphicsLayerPaintChildClippingMask) |
2421 paintLayerFlags |= PaintLayerPaintingChildClippingMaskPhase; | 2435 paintLayerFlags |= PaintLayerPaintingChildClippingMaskPhase; |
2422 if (graphicsLayerPaintingPhase & GraphicsLayerPaintOverflowContents) | 2436 if (graphicsLayerPaintingPhase & GraphicsLayerPaintOverflowContents) |
2423 paintLayerFlags |= PaintLayerPaintingOverflowContents; | 2437 paintLayerFlags |= PaintLayerPaintingOverflowContents; |
2424 if (graphicsLayerPaintingPhase & GraphicsLayerPaintCompositedScroll) | 2438 if (graphicsLayerPaintingPhase & GraphicsLayerPaintCompositedScroll) |
2425 paintLayerFlags |= PaintLayerPaintingCompositingScrollingPhase; | 2439 paintLayerFlags |= PaintLayerPaintingCompositingScrollingPhase; |
2426 | 2440 |
2427 if (graphicsLayer == m_backgroundLayer.get()) | 2441 if (graphicsLayer == m_backgroundLayer.get()) |
2428 paintLayerFlags |= (PaintLayerPaintingRootBackgroundOnly | PaintLayerPai ntingCompositingForegroundPhase); // Need PaintLayerPaintingCompositingForegroun dPhase to walk child layers. | 2442 paintLayerFlags |= (PaintLayerPaintingRootBackgroundOnly | PaintLayerPai ntingCompositingForegroundPhase); // Need PaintLayerPaintingCompositingForegroun dPhase to walk child layers. |
2429 else if (compositor()->fixedRootBackgroundLayer()) | 2443 else if (compositor()->fixedRootBackgroundLayer() && m_owningLayer.isRootLay er()) |
2430 paintLayerFlags |= PaintLayerPaintingSkipRootBackground; | 2444 paintLayerFlags |= PaintLayerPaintingSkipRootBackground; |
2431 | 2445 |
2432 if (graphicsLayer == m_graphicsLayer.get() | 2446 if (graphicsLayer == m_graphicsLayer.get() |
2433 || graphicsLayer == m_foregroundLayer.get() | 2447 || graphicsLayer == m_foregroundLayer.get() |
2434 || graphicsLayer == m_backgroundLayer.get() | 2448 || graphicsLayer == m_backgroundLayer.get() |
2435 || graphicsLayer == m_maskLayer.get() | 2449 || graphicsLayer == m_maskLayer.get() |
2436 || graphicsLayer == m_childClippingMaskLayer.get() | 2450 || graphicsLayer == m_childClippingMaskLayer.get() |
2437 || graphicsLayer == m_scrollingContentsLayer.get()) { | 2451 || graphicsLayer == m_scrollingContentsLayer.get()) { |
2438 | 2452 |
2453 bool paintRootBackgroundIntoScrollingContentsLayer = m_owningLayer.shoul dPaintBackgroundOntoScrollingContentsLayer(); | |
chrishtr
2016/08/05 00:40:08
Add:
DCHECK(!paintRootBackgroundIntoScrollingCont
flackr
2016/08/08 18:01:30
Done.
| |
2454 bool shouldSkipRootBackground = paintRootBackgroundIntoScrollingContents Layer | |
2455 ? graphicsLayer != m_scrollingContentsLayer.get() | |
2456 : !(graphicsLayerPaintingPhase & GraphicsLayerPaintBackground); | |
2457 if (shouldSkipRootBackground) | |
2458 paintLayerFlags |= PaintLayerPaintingSkipRootBackground; | |
2439 GraphicsLayerPaintInfo paintInfo; | 2459 GraphicsLayerPaintInfo paintInfo; |
2440 paintInfo.paintLayer = &m_owningLayer; | 2460 paintInfo.paintLayer = &m_owningLayer; |
2441 paintInfo.compositedBounds = compositedBounds(); | 2461 paintInfo.compositedBounds = compositedBounds(); |
2442 paintInfo.offsetFromLayoutObject = graphicsLayer->offsetFromLayoutObject (); | 2462 paintInfo.offsetFromLayoutObject = graphicsLayer->offsetFromLayoutObject (); |
2443 adjustForCompositedScrolling(graphicsLayer, paintInfo.offsetFromLayoutOb ject); | 2463 adjustForCompositedScrolling(graphicsLayer, paintInfo.offsetFromLayoutOb ject); |
2444 | 2464 |
2445 // We have to use the same root as for hit testing, because both methods can compute and cache clipRects. | 2465 // We have to use the same root as for hit testing, because both methods can compute and cache clipRects. |
2446 doPaintTask(paintInfo, *graphicsLayer, paintLayerFlags, context, interes tRect); | 2466 doPaintTask(paintInfo, *graphicsLayer, paintLayerFlags, context, interes tRect); |
2447 } else if (graphicsLayer == m_squashingLayer.get()) { | 2467 } else if (graphicsLayer == m_squashingLayer.get()) { |
2448 for (size_t i = 0; i < m_squashedLayers.size(); ++i) | 2468 for (size_t i = 0; i < m_squashedLayers.size(); ++i) |
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2660 } else if (graphicsLayer == m_scrollingContentsLayer.get()) { | 2680 } else if (graphicsLayer == m_scrollingContentsLayer.get()) { |
2661 name = "Scrolling Contents Layer"; | 2681 name = "Scrolling Contents Layer"; |
2662 } else { | 2682 } else { |
2663 ASSERT_NOT_REACHED(); | 2683 ASSERT_NOT_REACHED(); |
2664 } | 2684 } |
2665 | 2685 |
2666 return name; | 2686 return name; |
2667 } | 2687 } |
2668 | 2688 |
2669 } // namespace blink | 2689 } // namespace blink |
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