text: // 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_RESOURCES_IMAGE_LAYER_UPDATER_H_
  #define CC_RESOURCES_IMAGE_LAYER_UPDATER_H_
  
  #include "cc/base/cc_export.h"
  #include "cc/resources/layer_updater.h"
  #include "third_party/skia/include/core/SkBitmap.h"
  
  namespace cc {
  
  class ResourceUpdateQueue;
  
  class CC_EXPORT ImageLayerUpdater : public LayerUpdater {
   public:
    class Resource : public LayerUpdater::Resource {
     public:
      Resource(ImageLayerUpdater* updater,
               scoped_ptr<PrioritizedResource> texture);
      virtual ~Resource();
  
      virtual void Update(ResourceUpdateQueue* queue,
                          gfx::Rect source_rect,
                          gfx::Vector2d dest_offset,
                          bool partial_update) OVERRIDE;
  
     private:
      ImageLayerUpdater* updater_;
  
      DISALLOW_COPY_AND_ASSIGN(Resource);
    };
  
    static scoped_refptr<ImageLayerUpdater> Create();
  
    virtual scoped_ptr<LayerUpdater::Resource> CreateResource(
        PrioritizedResourceManager*) OVERRIDE;
  
    void UpdateTexture(ResourceUpdateQueue* queue,
                       PrioritizedResource* texture,
                       gfx::Rect source_rect,
                       gfx::Vector2d dest_offset,
                       bool partial_update);
  
    void SetBitmap(const SkBitmap& bitmap);
    bool UsingBitmap(const SkBitmap& bitmap) const;
  
   private:
    ImageLayerUpdater() {}
    virtual ~ImageLayerUpdater() {}
  
    SkBitmap bitmap_;
  
    DISALLOW_COPY_AND_ASSIGN(ImageLayerUpdater);
  };
  
  }  // namespace cc
  
  #endif  // CC_RESOURCES_IMAGE_LAYER_UPDATER_H_
  