cc/caching_bitmap_content_layer_updater.h

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CC_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_
   6 #define CC_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "cc/bitmap_content_layer_updater.h"
  10 #include "third_party/skia/include/core/SkBitmap.h"
  11
  12 namespace cc {
  13
  14 class CachingBitmapContentLayerUpdater
  15     : public BitmapContentLayerUpdater {
  16  public:
  17   static scoped_refptr<CachingBitmapContentLayerUpdater> Create(
  18       scoped_ptr<LayerPainter>);
  19
  20   virtual void prepareToUpdate(const gfx::Rect& content_rect,
  21                                const gfx::Size& tile_size,
  22                                float contents_width_scale,
  23                                float contents_height_scale,
  24                                gfx::Rect& resulting_opaque_rect,
  25                                RenderingStats&) OVERRIDE;
  26
  27   bool pixelsDidChange() const;
  28
  29  private:
  30   explicit CachingBitmapContentLayerUpdater(
  31       scoped_ptr<LayerPainter> painter);
  32   virtual ~CachingBitmapContentLayerUpdater();
  33
  34   bool pixels_did_change_;
  35   SkBitmap cached_bitmap_;
  36 };
  37
  38 }  // namespace cc
  39
  40 #endif  // CC_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_