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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_PICTURE_PILE_IMPL_H_
#define CC_PICTURE_PILE_IMPL_H_
#include <map>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/threading/thread.h"
#include "cc/cc_export.h"
#include "cc/picture.h"
#include "cc/picture_pile.h"
#include "cc/scoped_ptr_vector.h"
#include "ui/gfx/rect.h"
namespace cc {
struct RenderingStats;
class CC_EXPORT PicturePileImpl : public base::RefCounted<PicturePileImpl> {
public:
static scoped_refptr<PicturePileImpl> Create();
// Get paint-safe version of this picture for a specific thread.
PicturePileImpl* GetCloneForDrawingOnThread(base::Thread*);
// Clone a paint-safe version of this picture.
scoped_refptr<PicturePileImpl> CloneForDrawing() const;
// Raster a subrect of this PicturePileImpl into the given canvas.
// It's only safe to call paint on a cloned version.
// It is assumed that contentsScale has already been applied to this canvas.
void Raster(
SkCanvas* canvas,
gfx::Rect content_rect,
float contents_scale,
RenderingStats* stats);
private:
friend class PicturePile;
PicturePileImpl();
~PicturePileImpl();
PicturePile::Pile pile_;
typedef std::map<base::PlatformThreadId, scoped_refptr<PicturePileImpl> >
CloneMap;
CloneMap clones_;
friend class base::RefCounted<PicturePileImpl>;
DISALLOW_COPY_AND_ASSIGN(PicturePileImpl);
};
} // namespace cc
#endif // CC_PICTURE_PILE_IMPL_H_
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