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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "config.h" | 5 #include "config.h" |
| 6 #include "core/paint/LayerClipRecorder.h" | 6 #include "core/paint/LayerClipRecorder.h" |
| 7 | 7 |
| 8 #include "core/layout/Layer.h" |
| 8 #include "core/rendering/ClipRect.h" | 9 #include "core/rendering/ClipRect.h" |
| 9 #include "core/rendering/RenderLayer.h" | |
| 10 #include "core/rendering/RenderView.h" | 10 #include "core/rendering/RenderView.h" |
| 11 #include "platform/RuntimeEnabledFeatures.h" | 11 #include "platform/RuntimeEnabledFeatures.h" |
| 12 #include "platform/geometry/IntRect.h" | 12 #include "platform/geometry/IntRect.h" |
| 13 #include "platform/graphics/GraphicsContext.h" | 13 #include "platform/graphics/GraphicsContext.h" |
| 14 #include "platform/graphics/GraphicsLayer.h" | 14 #include "platform/graphics/GraphicsLayer.h" |
| 15 #include "platform/graphics/paint/ClipRecorder.h" | 15 #include "platform/graphics/paint/ClipRecorder.h" |
| 16 #include "platform/graphics/paint/DisplayItemList.h" | 16 #include "platform/graphics/paint/DisplayItemList.h" |
| 17 | 17 |
| 18 namespace blink { | 18 namespace blink { |
| 19 | 19 |
| 20 LayerClipRecorder::LayerClipRecorder(const RenderLayerModelObject* renderer, Gra
phicsContext* graphicsContext, DisplayItem::Type clipType, const ClipRect& clipR
ect, | 20 LayerClipRecorder::LayerClipRecorder(const LayoutLayerModelObject* renderer, Gra
phicsContext* graphicsContext, DisplayItem::Type clipType, const ClipRect& clipR
ect, |
| 21 const LayerPaintingInfo* localPaintingInfo, const LayoutPoint& fragmentOffse
t, PaintLayerFlags paintFlags, BorderRadiusClippingRule rule) | 21 const LayerPaintingInfo* localPaintingInfo, const LayoutPoint& fragmentOffse
t, PaintLayerFlags paintFlags, BorderRadiusClippingRule rule) |
| 22 : m_graphicsContext(graphicsContext) | 22 : m_graphicsContext(graphicsContext) |
| 23 , m_renderer(renderer) | 23 , m_renderer(renderer) |
| 24 , m_clipType(clipType) | 24 , m_clipType(clipType) |
| 25 { | 25 { |
| 26 ASSERT(renderer); | 26 ASSERT(renderer); |
| 27 | 27 |
| 28 IntRect snappedClipRect = pixelSnappedIntRect(clipRect.rect()); | 28 IntRect snappedClipRect = pixelSnappedIntRect(clipRect.rect()); |
| 29 OwnPtr<ClipDisplayItem> clipDisplayItem = ClipDisplayItem::create(renderer->
displayItemClient(), clipType, snappedClipRect); | 29 OwnPtr<ClipDisplayItem> clipDisplayItem = ClipDisplayItem::create(renderer->
displayItemClient(), clipType, snappedClipRect); |
| 30 if (localPaintingInfo && clipRect.hasRadius()) | 30 if (localPaintingInfo && clipRect.hasRadius()) |
| 31 collectRoundedRectClips(*renderer->layer(), *localPaintingInfo, graphics
Context, fragmentOffset, paintFlags, rule, clipDisplayItem->roundedRectClips()); | 31 collectRoundedRectClips(*renderer->layer(), *localPaintingInfo, graphics
Context, fragmentOffset, paintFlags, rule, clipDisplayItem->roundedRectClips()); |
| 32 if (!RuntimeEnabledFeatures::slimmingPaintEnabled()) { | 32 if (!RuntimeEnabledFeatures::slimmingPaintEnabled()) { |
| 33 clipDisplayItem->replay(graphicsContext); | 33 clipDisplayItem->replay(graphicsContext); |
| 34 } else { | 34 } else { |
| 35 ASSERT(m_graphicsContext->displayItemList()); | 35 ASSERT(m_graphicsContext->displayItemList()); |
| 36 m_graphicsContext->displayItemList()->add(clipDisplayItem.release()); | 36 m_graphicsContext->displayItemList()->add(clipDisplayItem.release()); |
| 37 } | 37 } |
| 38 } | 38 } |
| 39 | 39 |
| 40 static bool inContainingBlockChain(RenderLayer* startLayer, RenderLayer* endLaye
r) | 40 static bool inContainingBlockChain(Layer* startLayer, Layer* endLayer) |
| 41 { | 41 { |
| 42 if (startLayer == endLayer) | 42 if (startLayer == endLayer) |
| 43 return true; | 43 return true; |
| 44 | 44 |
| 45 RenderView* view = startLayer->renderer()->view(); | 45 RenderView* view = startLayer->renderer()->view(); |
| 46 for (RenderBlock* currentBlock = startLayer->renderer()->containingBlock();
currentBlock && currentBlock != view; currentBlock = currentBlock->containingBlo
ck()) { | 46 for (RenderBlock* currentBlock = startLayer->renderer()->containingBlock();
currentBlock && currentBlock != view; currentBlock = currentBlock->containingBlo
ck()) { |
| 47 if (currentBlock->layer() == endLayer) | 47 if (currentBlock->layer() == endLayer) |
| 48 return true; | 48 return true; |
| 49 } | 49 } |
| 50 | 50 |
| 51 return false; | 51 return false; |
| 52 } | 52 } |
| 53 | 53 |
| 54 void LayerClipRecorder::collectRoundedRectClips(RenderLayer& renderLayer, const
LayerPaintingInfo& localPaintingInfo, GraphicsContext* context, const LayoutPoin
t& fragmentOffset, PaintLayerFlags paintFlags, | 54 void LayerClipRecorder::collectRoundedRectClips(Layer& renderLayer, const LayerP
aintingInfo& localPaintingInfo, GraphicsContext* context, const LayoutPoint& fra
gmentOffset, PaintLayerFlags paintFlags, |
| 55 BorderRadiusClippingRule rule, Vector<FloatRoundedRect>& roundedRectClips) | 55 BorderRadiusClippingRule rule, Vector<FloatRoundedRect>& roundedRectClips) |
| 56 { | 56 { |
| 57 // If the clip rect has been tainted by a border radius, then we have to wal
k up our layer chain applying the clips from | 57 // If the clip rect has been tainted by a border radius, then we have to wal
k up our layer chain applying the clips from |
| 58 // any layers with overflow. The condition for being able to apply these cli
ps is that the overflow object be in our | 58 // any layers with overflow. The condition for being able to apply these cli
ps is that the overflow object be in our |
| 59 // containing block chain so we check that also. | 59 // containing block chain so we check that also. |
| 60 for (RenderLayer* layer = rule == IncludeSelfForBorderRadius ? &renderLayer
: renderLayer.parent(); layer; layer = layer->parent()) { | 60 for (Layer* layer = rule == IncludeSelfForBorderRadius ? &renderLayer : rend
erLayer.parent(); layer; layer = layer->parent()) { |
| 61 // Composited scrolling layers handle border-radius clip in the composit
or via a mask layer. We do not | 61 // Composited scrolling layers handle border-radius clip in the composit
or via a mask layer. We do not |
| 62 // want to apply a border-radius clip to the layer contents itself, beca
use that would require re-rastering | 62 // want to apply a border-radius clip to the layer contents itself, beca
use that would require re-rastering |
| 63 // every frame to update the clip. We only want to make sure that the ma
sk layer is properly clipped so | 63 // every frame to update the clip. We only want to make sure that the ma
sk layer is properly clipped so |
| 64 // that it can in turn clip the scrolled contents in the compositor. | 64 // that it can in turn clip the scrolled contents in the compositor. |
| 65 if (layer->needsCompositedScrolling() && !(paintFlags & PaintLayerPainti
ngChildClippingMaskPhase)) | 65 if (layer->needsCompositedScrolling() && !(paintFlags & PaintLayerPainti
ngChildClippingMaskPhase)) |
| 66 break; | 66 break; |
| 67 | 67 |
| 68 if (layer->renderer()->hasOverflowClip() && layer->renderer()->style()->
hasBorderRadius() && inContainingBlockChain(&renderLayer, layer)) { | 68 if (layer->renderer()->hasOverflowClip() && layer->renderer()->style()->
hasBorderRadius() && inContainingBlockChain(&renderLayer, layer)) { |
| 69 LayoutPoint delta(fragmentOffset); | 69 LayoutPoint delta(fragmentOffset); |
| 70 layer->convertToLayerCoords(localPaintingInfo.rootLayer, delta); | 70 layer->convertToLayerCoords(localPaintingInfo.rootLayer, delta); |
| (...skipping 11 matching lines...) Expand all Loading... |
| 82 DisplayItem::Type endType = DisplayItem::clipTypeToEndClipType(m_clipTyp
e); | 82 DisplayItem::Type endType = DisplayItem::clipTypeToEndClipType(m_clipTyp
e); |
| 83 OwnPtr<EndClipDisplayItem> endClip = EndClipDisplayItem::create(m_render
er->displayItemClient(), endType); | 83 OwnPtr<EndClipDisplayItem> endClip = EndClipDisplayItem::create(m_render
er->displayItemClient(), endType); |
| 84 ASSERT(m_graphicsContext->displayItemList()); | 84 ASSERT(m_graphicsContext->displayItemList()); |
| 85 m_graphicsContext->displayItemList()->add(endClip.release()); | 85 m_graphicsContext->displayItemList()->add(endClip.release()); |
| 86 } else { | 86 } else { |
| 87 m_graphicsContext->restore(); | 87 m_graphicsContext->restore(); |
| 88 } | 88 } |
| 89 } | 89 } |
| 90 | 90 |
| 91 } // namespace blink | 91 } // namespace blink |
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