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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_TILE_H_
#define CC_TILE_H_
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/scoped_vector.h"
#include "cc/picture_pile.h"
#include "cc/resource_provider.h"
#include "cc/tile_priority.h"
#include "ui/gfx/rect.h"
#include "ui/gfx/size.h"
namespace cc {
class Tile;
class TileManager;
enum TileQuality {
LOW_TILE_QUALITY,
NORMAL_TILE_QUALITY
};
class TileVersion {
public:
TileVersion(Tile* tile, int frame_number,
PicturePile* picture_pile)
: tile_(tile),
frame_number_(frame_number),
picture_pile_(picture_pile),
resource_id_(0) {}
int frame_number() const { return frame_number_; }
const PicturePile* picture_pile() const {
return picture_pile_;
}
const TilePriority& priority() const {
return priority_;
}
void ModifyPriority(const TilePriority& priority) {
priority_ = priority;
}
ResourceProvider::ResourceId resource_id() const {
return resource_id_;
}
private:
Tile* tile_;
int frame_number_;
PicturePile* picture_pile_;
TilePriority priority_;
ResourceProvider::ResourceId resource_id_;
};
class Tile : public base::RefCounted<Tile> {
public:
Tile(TileManager* tile_manager,
gfx::Size tile_size,
GLenum format,
gfx::Rect rect_inside_picture,
TileQuality quality);
void SetPicturePile(int frame_number, PicturePile* picture_pile);
void ModifyPriority(int frame_number, const TilePriority& priority);
// Returns 0 if not drawable.
ResourceProvider::ResourceId GetDrawableResourceId(int frame_number);
protected:
// Methods called by TileManager.
void DeleteVersionOnRequestOfTileManager(int frame_number);
private:
friend class base::RefCounted<Tile>;
friend class TileManager;
TileVersion* GetVersion(int frame_number);
~Tile();
TileManager* tile_manager_;
gfx::Rect tile_size_;
GLenum format_;
gfx::Rect rect_inside_picture_;
TileQuality quality_;
ScopedVector<TileVersion> versions_;
};
} // namespace cc
#endif
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