| // Copyright 2012 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_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_ |
| #define CC_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "cc/bitmap_content_layer_updater.h" |
| |
| namespace cc { |
| |
| class CachingBitmapContentLayerUpdater |
| : public BitmapContentLayerUpdater { |
| public: |
| static scoped_refptr<CachingBitmapContentLayerUpdater> Create( |
| scoped_ptr<LayerPainter>); |
| |
| virtual void prepareToUpdate(const gfx::Rect& content_rect, |
| const gfx::Size& tile_size, |
| float contents_width_scale, |
| float contents_height_scale, |
| gfx::Rect& resulting_opaque_rect, |
| RenderingStats&) OVERRIDE; |
| |
| bool pixelsDidChange() const; |
| |
| private: |
| explicit CachingBitmapContentLayerUpdater( |
| scoped_ptr<LayerPainter> painter); |
| virtual ~CachingBitmapContentLayerUpdater(); |
| |
| bool pixels_did_change_; |
| SkBitmap cached_bitmap_; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_ |