| // Copyright 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| |
| #ifndef CC_SKPICTURE_CONTENT_LAYER_UPDATER_H_ |
| #define CC_SKPICTURE_CONTENT_LAYER_UPDATER_H_ |
| |
| #include "cc/content_layer_updater.h" |
| #include "third_party/skia/include/core/SkPicture.h" |
| |
| class SkCanvas; |
| |
| namespace cc { |
| |
| class LayerPainter; |
| |
| // This class records the contentRect into an SkPicture. Subclasses, provide |
| // different implementations of tile updating based on this recorded picture. |
| // The BitmapSkPictureContentLayerUpdater and |
| // FrameBufferSkPictureContentLayerUpdater are two examples of such |
| // implementations. |
| class SkPictureContentLayerUpdater : public ContentLayerUpdater { |
| public: |
| class Resource : public LayerUpdater::Resource { |
| public: |
| Resource(SkPictureContentLayerUpdater*, scoped_ptr<PrioritizedResource>); |
| virtual ~Resource(); |
| |
| virtual void update(ResourceUpdateQueue&, const gfx::Rect& sourceRect, const gfx::Vector2d& destOffset, bool partialUpdate, RenderingStats&) OVERRIDE; |
| |
| private: |
| SkPictureContentLayerUpdater* updater() { return m_updater; } |
| |
| SkPictureContentLayerUpdater* m_updater; |
| }; |
| |
| static scoped_refptr<SkPictureContentLayerUpdater> create(scoped_ptr<LayerPainter>); |
| |
| virtual scoped_ptr<LayerUpdater::Resource> createResource(PrioritizedResourceManager*) OVERRIDE; |
| virtual void setOpaque(bool) OVERRIDE; |
| |
| protected: |
| explicit SkPictureContentLayerUpdater(scoped_ptr<LayerPainter>); |
| virtual ~SkPictureContentLayerUpdater(); |
| |
| virtual void prepareToUpdate(const gfx::Rect& contentRect, const gfx::Size& tileSize, float contentsWidthScale, float contentsHeightScale, gfx::Rect& resultingOpaqueRect, RenderingStats&) OVERRIDE; |
| void drawPicture(SkCanvas*); |
| void updateTexture(ResourceUpdateQueue& queue, PrioritizedResource* texture, const gfx::Rect& sourceRect, const gfx::Vector2d& destOffset, bool partialUpdate); |
| |
| bool layerIsOpaque() const { return m_layerIsOpaque; } |
| |
| private: |
| // Recording canvas. |
| SkPicture m_picture; |
| // True when it is known that all output pixels will be opaque. |
| bool m_layerIsOpaque; |
| }; |
| |
| } // namespace cc |
| #endif // CC_SKPICTURE_CONTENT_LAYER_UPDATER_H_ |