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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/LayerPainter.h" | 6 #include "core/paint/LayerPainter.h" |
7 | 7 |
8 #include "core/frame/Settings.h" | 8 #include "core/frame/Settings.h" |
9 #include "core/page/Page.h" | 9 #include "core/page/Page.h" |
10 #include "core/paint/FilterPainter.h" | 10 #include "core/paint/FilterPainter.h" |
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63 | 63 |
64 // If this layer is totally invisible then there is nothing to paint. | 64 // If this layer is totally invisible then there is nothing to paint. |
65 if (!m_renderLayer.renderer()->opacity()) | 65 if (!m_renderLayer.renderer()->opacity()) |
66 return; | 66 return; |
67 | 67 |
68 if (m_renderLayer.paintsWithTransparency(paintingInfo.paintBehavior)) | 68 if (m_renderLayer.paintsWithTransparency(paintingInfo.paintBehavior)) |
69 paintFlags |= PaintLayerHaveTransparency; | 69 paintFlags |= PaintLayerHaveTransparency; |
70 | 70 |
71 // PaintLayerAppliedTransform is used in RenderReplica, to avoid applying th e transform twice. | 71 // PaintLayerAppliedTransform is used in RenderReplica, to avoid applying th e transform twice. |
72 if (m_renderLayer.paintsWithTransform(paintingInfo.paintBehavior) && !(paint Flags & PaintLayerAppliedTransform)) { | 72 if (m_renderLayer.paintsWithTransform(paintingInfo.paintBehavior) && !(paint Flags & PaintLayerAppliedTransform)) { |
73 // FIXME: move everything into paintLayerByApplyingTransform(). | |
73 TransformationMatrix layerTransform = m_renderLayer.renderableTransform( paintingInfo.paintBehavior); | 74 TransformationMatrix layerTransform = m_renderLayer.renderableTransform( paintingInfo.paintBehavior); |
74 // If the transform can't be inverted, then don't paint anything. | 75 // If the transform can't be inverted, then don't paint anything. |
75 if (!layerTransform.isInvertible()) | 76 if (!layerTransform.isInvertible()) |
76 return; | 77 return; |
77 | 78 |
78 if (m_renderLayer.enclosingPaginationLayer()) { | 79 // If this is the "root" layer, clipping wrt. the ancestry has already b een set up, which |
79 // FIXME: unify this one-off path with the code below. | 80 // means that we can skip some unnecessary work (and even potentially in correct work at |
80 paintTransformedLayerIntoFragments(context, paintingInfo, paintFlags ); | 81 // that, if the ancestry has additional transforms). |
81 return; | 82 RenderLayer* parentLayer = &m_renderLayer == paintingInfo.rootLayer ? 0 : m_renderLayer.parent(); |
82 } | |
83 | 83 |
84 // Make sure the parent's clip rects have been calculated. | 84 ClipRect clipRect(LayoutRect::infiniteRect()); |
85 ClipRect clipRect = paintingInfo.paintDirtyRect; | 85 if (parentLayer) { |
86 | 86 // Calculate the clip rectangle that the ancestors establish. |
87 OwnPtr<ClipRecorder> clipRecorder; | |
88 if (m_renderLayer.parent()) { | |
89 ClipRectsContext clipRectsContext(paintingInfo.rootLayer, (paintFlag s & PaintLayerUncachedClipRects) ? UncachedClipRects : PaintingClipRects, Ignore OverlayScrollbarSize); | 87 ClipRectsContext clipRectsContext(paintingInfo.rootLayer, (paintFlag s & PaintLayerUncachedClipRects) ? UncachedClipRects : PaintingClipRects, Ignore OverlayScrollbarSize); |
90 if (shouldRespectOverflowClip(paintFlags, m_renderLayer.renderer()) == IgnoreOverflowClip) | 88 if (shouldRespectOverflowClip(paintFlags, m_renderLayer.renderer()) == IgnoreOverflowClip) |
91 clipRectsContext.setIgnoreOverflowClip(); | 89 clipRectsContext.setIgnoreOverflowClip(); |
92 clipRect = m_renderLayer.clipper().backgroundClipRect(clipRectsConte xt); | 90 clipRect = m_renderLayer.clipper().backgroundClipRect(clipRectsConte xt); |
93 clipRect.intersect(paintingInfo.paintDirtyRect); | |
94 | |
95 if (needsToClip(paintingInfo, clipRect)) { | |
96 clipRecorder = adoptPtr(new ClipRecorder(m_renderLayer.parent()- >renderer(), context, DisplayItem::ClipLayerParent, clipRect)); | |
97 if (clipRect.hasRadius()) | |
98 applyRoundedRectClips(*m_renderLayer.parent(), paintingInfo, context, LayoutPoint(), paintFlags, *clipRecorder); | |
99 } | |
100 } | 91 } |
101 | 92 |
102 paintLayerByApplyingTransform(context, paintingInfo, paintFlags); | 93 RenderLayer* paginationLayer = m_renderLayer.enclosingPaginationLayer(); |
94 LayerFragments fragments; | |
chrishtr
2014/11/17 23:27:49
Factor all this code into a new method paintFragme
mstensho (USE GERRIT)
2014/11/18 08:43:58
What I was going to do next (see the first FIXME)
| |
95 if (paginationLayer) { | |
96 ClipRectsCacheSlot cacheSlot = (paintFlags & PaintLayerUncachedClipR ects) ? UncachedClipRects : PaintingClipRects; | |
97 ShouldRespectOverflowClip respectOverflowClip = shouldRespectOverflo wClip(paintFlags, m_renderLayer.renderer()); | |
98 // Calculate the transformed bounding box in the current coordinate space, to figure out | |
99 // which fragmentainers (e.g. columns) we need to visit. | |
100 LayoutRect transformedExtent = RenderLayer::transparencyClipBox(&m_r enderLayer, paginationLayer, RenderLayer::PaintingTransparencyClipBox, RenderLay er::RootOfTransparencyClipBox, paintingInfo.subPixelAccumulation, paintingInfo.p aintBehavior); | |
101 paginationLayer->collectFragments(fragments, paintingInfo.rootLayer, paintingInfo.paintDirtyRect, cacheSlot, IgnoreOverlayScrollbarSize, respectOver flowClip, 0, paintingInfo.subPixelAccumulation, &transformedExtent); | |
102 } else { | |
103 // We don't need to collect any fragments in the regular way here. W e have already | |
104 // calculated a clip rectangle for the ancestry if it was needed, an d clipping this | |
105 // layer is something that can be done further down the path, when t he transform has | |
106 // been applied. | |
107 fragments.append(LayerFragment()); | |
108 } | |
103 | 109 |
110 for (const auto& fragment: fragments) { | |
111 ClipRect clipRectForFragment(clipRect); | |
112 if (paginationLayer) { | |
113 clipRectForFragment.moveBy(fragment.paginationOffset); | |
114 clipRectForFragment.intersect(fragment.backgroundRect); | |
115 if (clipRectForFragment.isEmpty()) | |
116 continue; | |
117 } | |
118 OwnPtr<ClipRecorder> clipRecorder; | |
119 if (parentLayer && needsToClip(paintingInfo, clipRectForFragment)) { | |
120 clipRecorder = adoptPtr(new ClipRecorder(parentLayer->renderer() , context, DisplayItem::ClipLayerParent, clipRectForFragment)); | |
121 if (clipRectForFragment.hasRadius()) | |
122 applyRoundedRectClips(*parentLayer, paintingInfo, context, f ragment.paginationOffset, paintFlags, *clipRecorder); | |
123 } | |
124 | |
125 paintLayerByApplyingTransform(context, paintingInfo, paintFlags, fra gment.paginationOffset); | |
126 } | |
104 return; | 127 return; |
105 } | 128 } |
106 | 129 |
107 paintLayerContentsAndReflection(context, paintingInfo, paintFlags); | 130 paintLayerContentsAndReflection(context, paintingInfo, paintFlags); |
108 } | 131 } |
109 | 132 |
110 class TransparencyLayerHelper { | 133 class TransparencyLayerHelper { |
111 public: | 134 public: |
112 TransparencyLayerHelper(GraphicsContext* context, RenderLayer& renderLayer, const RenderLayer* rootLayer, const LayoutRect& paintDirtyRect, const LayoutSize & subPixelAccumulation, PaintBehavior paintBehavior) | 135 TransparencyLayerHelper(GraphicsContext* context, RenderLayer& renderLayer, const RenderLayer* rootLayer, const LayoutRect& paintDirtyRect, const LayoutSize & subPixelAccumulation, PaintBehavior paintBehavior) |
113 : m_transparencyLayerInProgress(false) | 136 : m_transparencyLayerInProgress(false) |
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763 { | 786 { |
764 if (!m_renderLayer.containsDirtyOverlayScrollbars()) | 787 if (!m_renderLayer.containsDirtyOverlayScrollbars()) |
765 return; | 788 return; |
766 | 789 |
767 LayerPaintingInfo paintingInfo(&m_renderLayer, enclosingIntRect(damageRect), paintBehavior, LayoutSize(), paintingRoot); | 790 LayerPaintingInfo paintingInfo(&m_renderLayer, enclosingIntRect(damageRect), paintBehavior, LayoutSize(), paintingRoot); |
768 paintLayer(context, paintingInfo, PaintLayerPaintingOverlayScrollbars); | 791 paintLayer(context, paintingInfo, PaintLayerPaintingOverlayScrollbars); |
769 | 792 |
770 m_renderLayer.setContainsDirtyOverlayScrollbars(false); | 793 m_renderLayer.setContainsDirtyOverlayScrollbars(false); |
771 } | 794 } |
772 | 795 |
773 void LayerPainter::paintTransformedLayerIntoFragments(GraphicsContext* context, const LayerPaintingInfo& paintingInfo, PaintLayerFlags paintFlags) | |
774 { | |
775 LayerFragments enclosingPaginationFragments; | |
776 LayoutPoint offsetOfPaginationLayerFromRoot; | |
777 LayoutRect transformedExtent = RenderLayer::transparencyClipBox(&m_renderLay er, m_renderLayer.enclosingPaginationLayer(), RenderLayer::PaintingTransparencyC lipBox, RenderLayer::RootOfTransparencyClipBox, paintingInfo.subPixelAccumulatio n, paintingInfo.paintBehavior); | |
778 m_renderLayer.enclosingPaginationLayer()->collectFragments(enclosingPaginati onFragments, paintingInfo.rootLayer, paintingInfo.paintDirtyRect, | |
779 (paintFlags & PaintLayerUncachedClipRects) ? UncachedClipRects : Paintin gClipRects, IgnoreOverlayScrollbarSize, | |
780 shouldRespectOverflowClip(paintFlags, m_renderLayer.renderer()), &offset OfPaginationLayerFromRoot, paintingInfo.subPixelAccumulation, &transformedExtent ); | |
781 | |
782 for (size_t i = 0; i < enclosingPaginationFragments.size(); ++i) { | |
783 const LayerFragment& fragment = enclosingPaginationFragments.at(i); | |
784 | |
785 // Apply the page/column clip for this fragment, as well as any clips es tablished by layers in between us and | |
786 // the enclosing pagination layer. | |
787 LayoutRect clipRect = fragment.backgroundRect.rect(); | |
788 | |
789 // Now compute the clips within a given fragment | |
790 if (m_renderLayer.parent() != m_renderLayer.enclosingPaginationLayer()) { | |
791 m_renderLayer.enclosingPaginationLayer()->convertToLayerCoords(paint ingInfo.rootLayer, offsetOfPaginationLayerFromRoot); | |
792 | |
793 ClipRectsContext clipRectsContext(m_renderLayer.enclosingPaginationL ayer(), (paintFlags & PaintLayerUncachedClipRects) ? UncachedClipRects : Paintin gClipRects, IgnoreOverlayScrollbarSize); | |
794 if (shouldRespectOverflowClip(paintFlags, m_renderLayer.renderer()) == IgnoreOverflowClip) | |
795 clipRectsContext.setIgnoreOverflowClip(); | |
796 LayoutRect parentClipRect = m_renderLayer.clipper().backgroundClipRe ct(clipRectsContext).rect(); | |
797 parentClipRect.moveBy(fragment.paginationOffset + offsetOfPagination LayerFromRoot); | |
798 clipRect.intersect(parentClipRect); | |
799 } | |
800 | |
801 OwnPtr<ClipRecorder> clipRecorder; | |
802 if (needsToClip(paintingInfo, clipRect)) | |
803 clipRecorder = adoptPtr(new ClipRecorder(m_renderLayer.renderer(), c ontext, DisplayItem::ClipLayerFragmentParent, clipRect)); | |
804 | |
805 paintLayerByApplyingTransform(context, paintingInfo, paintFlags, fragmen t.paginationOffset); | |
806 } | |
807 } | |
808 | |
809 } // namespace blink | 796 } // namespace blink |
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