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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 "core/paint/PaintPropertyTreeBuilder.h" | 5 #include "core/paint/PaintPropertyTreeBuilder.h" |
| 6 | 6 |
| 7 #include "core/frame/FrameView.h" | 7 #include "core/frame/FrameView.h" |
| 8 #include "core/frame/LocalFrame.h" | 8 #include "core/frame/LocalFrame.h" |
| 9 #include "core/frame/Settings.h" | 9 #include "core/frame/Settings.h" |
| 10 #include "core/layout/LayoutInline.h" | 10 #include "core/layout/LayoutInline.h" |
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| 211 PaintPropertyTreeBuilderContext& context) { | 211 PaintPropertyTreeBuilderContext& context) { |
| 212 bool usesPaintOffsetTranslation = false; | 212 bool usesPaintOffsetTranslation = false; |
| 213 if (RuntimeEnabledFeatures::rootLayerScrollingEnabled() && | 213 if (RuntimeEnabledFeatures::rootLayerScrollingEnabled() && |
| 214 object.isLayoutView()) { | 214 object.isLayoutView()) { |
| 215 // Root layer scrolling always creates a translation node for LayoutView to | 215 // Root layer scrolling always creates a translation node for LayoutView to |
| 216 // ensure fixed and absolute contexts use the correct transform space. | 216 // ensure fixed and absolute contexts use the correct transform space. |
| 217 usesPaintOffsetTranslation = true; | 217 usesPaintOffsetTranslation = true; |
| 218 } else if (object.isBoxModelObject() && | 218 } else if (object.isBoxModelObject() && |
| 219 context.current.paintOffset != LayoutPoint()) { | 219 context.current.paintOffset != LayoutPoint()) { |
| 220 // TODO(trchen): Eliminate PaintLayer dependency. | 220 // TODO(trchen): Eliminate PaintLayer dependency. |
| 221 // TODO(chrishtr): When changing the condition here, make sure to update |
| 222 // the condition in LayoutBoxModelObject::styleDidChange() above |
| 223 // setNeedsPaintPropertyUpdate(). |
| 221 PaintLayer* layer = toLayoutBoxModelObject(object).layer(); | 224 PaintLayer* layer = toLayoutBoxModelObject(object).layer(); |
| 222 if (layer && layer->paintsWithTransform(GlobalPaintNormalPhase)) | 225 if (layer && |
| 226 layer->paintsWithTransform(GlobalPaintFlattenCompositingLayers)) |
| 223 usesPaintOffsetTranslation = true; | 227 usesPaintOffsetTranslation = true; |
| 224 } | 228 } |
| 225 | 229 |
| 226 // We should use the same subpixel paint offset values for snapping | 230 // We should use the same subpixel paint offset values for snapping |
| 227 // regardless of whether a transform is present. If there is a transform | 231 // regardless of whether a transform is present. If there is a transform |
| 228 // we round the paint offset but keep around the residual fractional | 232 // we round the paint offset but keep around the residual fractional |
| 229 // component for the transformed content to paint with. In spv1 this was | 233 // component for the transformed content to paint with. In spv1 this was |
| 230 // called "subpixel accumulation". For more information, see | 234 // called "subpixel accumulation". For more information, see |
| 231 // PaintLayer::subpixelAccumulation() and | 235 // PaintLayer::subpixelAccumulation() and |
| 232 // PaintLayerPainter::paintFragmentByApplyingTransform. | 236 // PaintLayerPainter::paintFragmentByApplyingTransform. |
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| 905 #endif | 909 #endif |
| 906 | 910 |
| 907 updateOverflowClip(object, context); | 911 updateOverflowClip(object, context); |
| 908 updatePerspective(object, context); | 912 updatePerspective(object, context); |
| 909 updateSvgLocalToBorderBoxTransform(object, context); | 913 updateSvgLocalToBorderBoxTransform(object, context); |
| 910 updateScrollAndScrollTranslation(object, context); | 914 updateScrollAndScrollTranslation(object, context); |
| 911 updateOutOfFlowContext(object, context); | 915 updateOutOfFlowContext(object, context); |
| 912 } | 916 } |
| 913 | 917 |
| 914 } // namespace blink | 918 } // namespace blink |
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