cc/picture_pile.h

// 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 <list>

#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 {
class PicturePileImpl;
struct RenderingStats;

class CC_EXPORT PicturePile {
public:
  PicturePile();
  ~PicturePile();

  // Resize the PicturePile, invalidating / dropping recorded pictures as
  // necessary.
  void Resize(gfx::Size);
  gfx::Size size() const { return size_; }

  // Re-record parts of the picture that are invalid.
  // Invalidations are in layer space.
  void Update(
      ContentLayerClient* painter,
      const Region& invalidation,
      RenderingStats& stats);

  // Update other with a shallow copy of this (main => compositor thread commit)
  void PushPropertiesTo(PicturePileImpl* other);

private:
  friend class PicturePileImpl;

  void InvalidateRect(gfx::Rect invalidation);
  void ResetPile(ContentLayerClient* painter, RenderingStats& stats);

  typedef std::list<scoped_refptr<Picture> > Pile;
  Pile pile_;
  gfx::Size size_;

  DISALLOW_COPY_AND_ASSIGN(PicturePile);
};

}  // namespace cc

#endif  // CC_PICTURE_PILE_H_