Part 8 of cc/ directory shuffles: resources

cc/bitmap_content_layer_updater.h

-// 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_BITMAP_CONTENT_LAYER_UPDATER_H_
-#define CC_BITMAP_CONTENT_LAYER_UPDATER_H_
-
-#include "cc/base/cc_export.h"
-#include "cc/content_layer_updater.h"
-
-class SkCanvas;
-
-namespace cc {
-
-class LayerPainter;
-
-// 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,
-                        RenderingStats* stats) OVERRIDE;
-
-   private:
-    BitmapContentLayerUpdater* updater_;
-
-    DISALLOW_COPY_AND_ASSIGN(Resource);
-  };
-
-  static scoped_refptr<BitmapContentLayerUpdater> Create(
-      scoped_ptr<LayerPainter> painter);
-
-  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,
-                               RenderingStats* stats) OVERRIDE;
-  void UpdateTexture(ResourceUpdateQueue* queue,
-                     PrioritizedResource* resource,
-                     gfx::Rect source_rect,
-                     gfx::Vector2d dest_offset,
-                     bool partial_update);
-
-  virtual void SetOpaque(bool opaque) OVERRIDE;
-
- protected:
-  explicit BitmapContentLayerUpdater(scoped_ptr<LayerPainter> painter);
-  virtual ~BitmapContentLayerUpdater();
-
-  scoped_ptr<SkCanvas> canvas_;
-  gfx::Size canvas_size_;
-  bool opaque_;
-
-  DISALLOW_COPY_AND_ASSIGN(BitmapContentLayerUpdater);
-};
-
-}  // namespace cc
-
-#endif  // CC_BITMAP_CONTENT_LAYER_UPDATER_H_