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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2011 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 |
| 5 |
| 6 #ifndef SkPictureCanvasLayerTextureUpdater_h |
| 7 #define SkPictureCanvasLayerTextureUpdater_h |
| 8 |
| 9 #if USE(ACCELERATED_COMPOSITING) |
| 10 |
| 11 #include "CanvasLayerTextureUpdater.h" |
| 12 #include "SkPicture.h" |
| 13 |
| 14 class SkCanvas; |
| 15 |
| 16 namespace cc { |
| 17 |
| 18 class LayerPainterChromium; |
| 19 |
| 20 // This class records the contentRect into an SkPicture. Subclasses, provide |
| 21 // different implementations of tile updating based on this recorded picture. |
| 22 // The BitmapSkPictureCanvasLayerTextureUpdater and |
| 23 // FrameBufferSkPictureCanvasLayerTextureUpdater are two examples of such |
| 24 // implementations. |
| 25 class SkPictureCanvasLayerTextureUpdater : public CanvasLayerTextureUpdater { |
| 26 public: |
| 27 virtual ~SkPictureCanvasLayerTextureUpdater(); |
| 28 |
| 29 virtual void setOpaque(bool) OVERRIDE; |
| 30 |
| 31 protected: |
| 32 explicit SkPictureCanvasLayerTextureUpdater(PassOwnPtr<LayerPainterChromium>
); |
| 33 |
| 34 virtual void prepareToUpdate(const IntRect& contentRect, const IntSize& tile
Size, float contentsWidthScale, float contentsHeightScale, IntRect& resultingOpa
queRect, CCRenderingStats&) OVERRIDE; |
| 35 void drawPicture(SkCanvas*); |
| 36 |
| 37 bool layerIsOpaque() const { return m_layerIsOpaque; } |
| 38 |
| 39 private: |
| 40 // Recording canvas. |
| 41 SkPicture m_picture; |
| 42 // True when it is known that all output pixels will be opaque. |
| 43 bool m_layerIsOpaque; |
| 44 }; |
| 45 |
| 46 } // namespace cc |
| 47 #endif // USE(ACCELERATED_COMPOSITING) |
| 48 #endif // SkPictureCanvasLayerTextureUpdater_h |
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