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// Copyright 2010 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_LAYERS_CONTENT_LAYER_H_
#define CC_LAYERS_CONTENT_LAYER_H_
#include "base/basictypes.h"
#include "cc/base/cc_export.h"
#include "cc/layers/tiled_layer.h"
#include "cc/resources/layer_painter.h"
class SkCanvas;
namespace cc {
class ContentLayerClient;
class ContentLayerUpdater;
class CC_EXPORT ContentLayerPainter : public LayerPainter {
public:
static scoped_ptr<ContentLayerPainter> Create(ContentLayerClient* client);
virtual void Paint(SkCanvas* canvas,
gfx::Rect content_rect,
gfx::RectF* opaque) OVERRIDE;
private:
explicit ContentLayerPainter(ContentLayerClient* client);
ContentLayerClient* client_;
DISALLOW_COPY_AND_ASSIGN(ContentLayerPainter);
};
// A layer that renders its contents into an SkCanvas.
class CC_EXPORT ContentLayer : public TiledLayer {
public:
static scoped_refptr<ContentLayer> Create(ContentLayerClient* client);
void ClearClient() { client_ = NULL; }
virtual bool DrawsContent() const OVERRIDE;
virtual void SetLayerTreeHost(LayerTreeHost* layer_tree_host) OVERRIDE;
virtual void SetTexturePriorities(const PriorityCalculator& priority_calc)
OVERRIDE;
virtual bool Update(ResourceUpdateQueue* queue,
const OcclusionTracker* occlusion) OVERRIDE;
virtual bool NeedMoreUpdates() OVERRIDE;
virtual void SetContentsOpaque(bool contents_opaque) OVERRIDE;
virtual bool SupportsLCDText() const OVERRIDE;
virtual skia::RefPtr<SkPicture> GetPicture() const OVERRIDE;
virtual void OnOutputSurfaceCreated() OVERRIDE;
protected:
explicit ContentLayer(ContentLayerClient* client);
virtual ~ContentLayer();
// TiledLayer implementation.
virtual LayerUpdater* Updater() const OVERRIDE;
private:
// TiledLayer implementation.
virtual void CreateUpdaterIfNeeded() OVERRIDE;
void UpdateCanUseLCDText();
ContentLayerClient* client_;
scoped_refptr<ContentLayerUpdater> updater_;
bool can_use_lcd_text_last_frame_;
DISALLOW_COPY_AND_ASSIGN(ContentLayer);
};
} // namespace cc
#endif // CC_LAYERS_CONTENT_LAYER_H_
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