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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "config.h" | |
6 #include "core/paint/FilterPainter.h" | |
7 | |
8 #include "core/paint/LayerPainter.h" | |
9 #include "core/rendering/FilterEffectRenderer.h" | |
10 #include "core/rendering/RenderLayer.h" | |
11 #include "platform/graphics/GraphicsContext.h" | |
12 #include "platform/graphics/filters/FilterEffect.h" | |
13 #include "platform/graphics/filters/SkiaImageFilterBuilder.h" | |
14 | |
15 namespace blink { | |
16 | |
17 FilterPainter::FilterPainter(RenderLayer& renderLayer, GraphicsContext* context, const FloatRect& filterBoxRect, const ClipRect& clipRect, LayerPaintingInfo pai ntingInfo, PaintLayerFlags paintFlags) | |
18 : m_filterInProgress(false) | |
19 , m_context(context) | |
20 { | |
21 | |
mstensho (USE GERRIT)
2014/11/11 22:03:19
Extraneous blank line.
| |
22 SkiaImageFilterBuilder builder(context); | |
23 RefPtr<FilterEffect> lastEffect = renderLayer.filterRenderer()->lastEffect() ; | |
24 lastEffect->determineFilterPrimitiveSubregion(MapRectForward); | |
25 RefPtr<ImageFilter> imageFilter = builder.build(lastEffect.get(), ColorSpace DeviceRGB); | |
26 if (!imageFilter) | |
27 return; | |
28 | |
29 if (clipRect.rect() != paintingInfo.paintDirtyRect || clipRect.hasRadius()) { | |
30 m_clipRecorder = adoptPtr(new ClipRecorder(&renderLayer, context, Displa yItem::ClipLayerFilter, clipRect)); | |
31 LayerPainter::applyRoundedRectClips(renderLayer, paintingInfo, context, clipRect, paintFlags, *m_clipRecorder); | |
32 } | |
33 | |
34 context->save(); | |
35 FloatRect boundaries = mapImageFilterRect(imageFilter.get(), filterBoxRect); | |
36 context->translate(filterBoxRect.x(), filterBoxRect.y()); | |
37 boundaries.move(-filterBoxRect.x(), -filterBoxRect.y()); | |
38 context->beginLayer(1, CompositeSourceOver, &boundaries, ColorFilterNone, im ageFilter.get()); | |
39 context->translate(-filterBoxRect.x(), -filterBoxRect.y()); | |
40 m_filterInProgress = true; | |
41 } | |
42 | |
43 FilterPainter::~FilterPainter() | |
44 { | |
45 if (m_filterInProgress) { | |
46 m_context->endLayer(); | |
47 m_context->restore(); | |
48 } | |
49 } | |
50 | |
51 } // namespace blink | |
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