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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_H_
#define CC_PICTURE_PILE_H_
#include "base/basictypes.h"
#include "cc/cc_export.h"
#include "cc/picture.h"
#include "cc/region.h"
#include "cc/scoped_ptr_vector.h"
#include "ui/gfx/rect.h"
#include "ui/gfx/size.h"
namespace cc {
struct RenderingStats;
class CC_EXPORT PicturePile {
public:
PicturePile();
~PicturePile();
// Mark a portion of the PicturePile as invalid and needing to be re-recorded
// the next time update is called.
void Invalidate(gfx::Rect);
// Resize the PicturePile, invalidating / dropping recorded pictures as necessary.
void Resize(gfx::Size);
// Re-record parts of the picture that are invalid.
void Update(ContentLayerClient* painter, RenderingStats&);
// Update other with a shallow copy of this (main => compositor thread commit)
void PushPropertiesTo(PicturePile& other);
// Clone a paint-safe version of this picture (with cloned PicturePileRecords)
scoped_ptr<PicturePile> CloneForDrawing();
// Raster a subrect of this PicturePile 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 rect);
private:
void CopyAllButPile(PicturePile& from, PicturePile& to);
std::vector<scoped_refptr<Picture> > pile_;
gfx::Size size_;
Region invalidation_;
Region prev_invalidation_;
DISALLOW_COPY_AND_ASSIGN(PicturePile);
};
} // namespace cc
#endif // CC_PICTURE_PILE_H_
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