| // 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_RESOURCES_BITMAP_CONTENT_LAYER_UPDATER_H_ |
| #define CC_RESOURCES_BITMAP_CONTENT_LAYER_UPDATER_H_ |
| |
| #include "cc/base/cc_export.h" |
| #include "cc/resources/content_layer_updater.h" |
| #include "skia/ext/refptr.h" |
| |
| class SkCanvas; |
| |
| namespace cc { |
| |
| class LayerPainter; |
| class RenderingStatsInstrumenation; |
| |
| // This class rasterizes the content_rect into a skia bitmap canvas. It then |
| // updates textures by copying from the canvas into the texture, using |
| // MapSubImage if possible. |
| class CC_EXPORT BitmapContentLayerUpdater : public ContentLayerUpdater { |
| public: |
| class Resource : public LayerUpdater::Resource { |
| public: |
| Resource(BitmapContentLayerUpdater* updater, |
| scoped_ptr<PrioritizedResource> resource); |
| virtual ~Resource(); |
| |
| virtual void Update(ResourceUpdateQueue* queue, |
| gfx::Rect source_rect, |
| gfx::Vector2d dest_offset, |
| bool partial_update) OVERRIDE; |
| |
| private: |
| BitmapContentLayerUpdater* updater_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Resource); |
| }; |
| |
| static scoped_refptr<BitmapContentLayerUpdater> Create( |
| scoped_ptr<LayerPainter> painter, |
| RenderingStatsInstrumentation* stats_instrumenation, |
| int layer_id); |
| |
| virtual scoped_ptr<LayerUpdater::Resource> CreateResource( |
| PrioritizedResourceManager* manager) OVERRIDE; |
| virtual void PrepareToUpdate(gfx::Rect content_rect, |
| gfx::Size tile_size, |
| float contents_width_scale, |
| float contents_height_scale, |
| gfx::Rect* resulting_opaque_rect) OVERRIDE; |
| void UpdateTexture(ResourceUpdateQueue* queue, |
| PrioritizedResource* resource, |
| gfx::Rect source_rect, |
| gfx::Vector2d dest_offset, |
| bool partial_update); |
| virtual void SetOpaque(bool opaque) OVERRIDE; |
| virtual void ReduceMemoryUsage() OVERRIDE; |
| |
| protected: |
| BitmapContentLayerUpdater( |
| scoped_ptr<LayerPainter> painter, |
| RenderingStatsInstrumentation* stats_instrumenation, |
| int layer_id); |
| virtual ~BitmapContentLayerUpdater(); |
| |
| skia::RefPtr<SkCanvas> canvas_; |
| gfx::Size canvas_size_; |
| bool opaque_; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(BitmapContentLayerUpdater); |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_RESOURCES_BITMAP_CONTENT_LAYER_UPDATER_H_ |