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// Copyright 2011 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 CCLayerTilingData_h
#define CCLayerTilingData_h
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "cc/hash_pair.h"
#include "cc/scoped_ptr_hash_map.h"
#include "IntRect.h"
#include "Region.h"
#include "TilingData.h"
namespace cc {
class LayerTilingData {
public:
enum BorderTexelOption { HasBorderTexels, NoBorderTexels };
~LayerTilingData();
static scoped_ptr<LayerTilingData> create(const IntSize& tileSize, BorderTexelOption);
bool hasEmptyBounds() const { return m_tilingData.hasEmptyBounds(); }
int numTilesX() const { return m_tilingData.numTilesX(); }
int numTilesY() const { return m_tilingData.numTilesY(); }
IntRect tileBounds(int i, int j) const { return m_tilingData.tileBounds(i, j); }
IntPoint textureOffset(int xIndex, int yIndex) const { return m_tilingData.textureOffset(xIndex, yIndex); }
// Change the tile size. This may invalidate all the existing tiles.
void setTileSize(const IntSize&);
IntSize tileSize() const;
// Change the border texel setting. This may invalidate all existing tiles.
void setBorderTexelOption(BorderTexelOption);
bool hasBorderTexels() const { return m_tilingData.borderTexels(); }
bool isEmpty() const { return hasEmptyBounds() || !tiles().size(); }
const LayerTilingData& operator=(const LayerTilingData&);
class Tile {
public:
Tile() : m_i(-1), m_j(-1) { }
virtual ~Tile() { }
int i() const { return m_i; }
int j() const { return m_j; }
void moveTo(int i, int j) { m_i = i; m_j = j; }
const IntRect& opaqueRect() const { return m_opaqueRect; }
void setOpaqueRect(const IntRect& opaqueRect) { m_opaqueRect = opaqueRect; }
private:
int m_i;
int m_j;
IntRect m_opaqueRect;
DISALLOW_COPY_AND_ASSIGN(Tile);
};
typedef std::pair<int, int> TileMapKey;
typedef ScopedPtrHashMap<TileMapKey, Tile> TileMap;
void addTile(scoped_ptr<Tile>, int, int);
scoped_ptr<Tile> takeTile(int, int);
Tile* tileAt(int, int) const;
const TileMap& tiles() const { return m_tiles; }
void setBounds(const IntSize&);
IntSize bounds() const;
void contentRectToTileIndices(const IntRect&, int &left, int &top, int &right, int &bottom) const;
IntRect tileRect(const Tile*) const;
Region opaqueRegionInContentRect(const IntRect&) const;
void reset();
protected:
LayerTilingData(const IntSize& tileSize, BorderTexelOption);
TileMap m_tiles;
TilingData m_tilingData;
};
}
#endif
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