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// 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_CONTENT_LAYER_UPDATER_H_
#define CC_RESOURCES_CONTENT_LAYER_UPDATER_H_
#include "cc/base/cc_export.h"
#include "cc/resources/layer_updater.h"
#include "ui/gfx/rect.h"
class SkCanvas;
namespace cc {
class LayerPainter;
class RenderingStatsInstrumentation;
// Base class for BitmapContentLayerUpdater and
// SkPictureContentLayerUpdater that reduces code duplication between
// their respective PaintContents implementations.
class CC_EXPORT ContentLayerUpdater : public LayerUpdater {
public:
void set_rendering_stats_instrumentation(RenderingStatsInstrumentation* rsi);
virtual void SetOpaque(bool opaque) OVERRIDE;
virtual void SetFillsBoundsCompletely(bool fills_bounds) OVERRIDE;
protected:
ContentLayerUpdater(scoped_ptr<LayerPainter> painter,
RenderingStatsInstrumentation* stats_instrumentation,
int layer_id);
virtual ~ContentLayerUpdater();
void PaintContents(SkCanvas* canvas,
const gfx::Rect& content_rect,
float contents_width_scale,
float contents_height_scale,
gfx::Rect* resulting_opaque_rect);
gfx::Rect content_rect() const { return content_rect_; }
bool layer_is_opaque() const { return layer_is_opaque_; }
bool layer_fills_bounds_completely() const {
return layer_fills_bounds_completely_;
}
RenderingStatsInstrumentation* rendering_stats_instrumentation_;
int layer_id_;
// True when it is known that all output pixels will be opaque.
bool layer_is_opaque_;
// True when it is known that all output pixels will be filled.
bool layer_fills_bounds_completely_;
private:
gfx::Rect content_rect_;
scoped_ptr<LayerPainter> painter_;
DISALLOW_COPY_AND_ASSIGN(ContentLayerUpdater);
};
} // namespace cc
#endif // CC_RESOURCES_CONTENT_LAYER_UPDATER_H_
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