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// 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_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_
#define CC_RESOURCES_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_
#include "base/compiler_specific.h"
#include "cc/resources/bitmap_content_layer_updater.h"
#include "third_party/skia/include/core/SkBitmap.h"
namespace cc {
class CachingBitmapContentLayerUpdater : public BitmapContentLayerUpdater {
public:
static scoped_refptr<CachingBitmapContentLayerUpdater> Create(
scoped_ptr<LayerPainter>,
RenderingStatsInstrumentation* stats_instrumentation,
int layer_id);
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;
bool pixels_did_change() const {
return pixels_did_change_;
}
private:
CachingBitmapContentLayerUpdater(
scoped_ptr<LayerPainter> painter,
RenderingStatsInstrumentation* stats_instrumentation,
int layer_id);
virtual ~CachingBitmapContentLayerUpdater();
bool pixels_did_change_;
SkBitmap cached_bitmap_;
DISALLOW_COPY_AND_ASSIGN(CachingBitmapContentLayerUpdater);
};
} // namespace cc
#endif // CC_RESOURCES_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_
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