| // 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 CC_LAYER_TILING_DATA_H_ |
| #define CC_LAYER_TILING_DATA_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "cc/cc_export.h" |
| #include "cc/hash_pair.h" |
| #include "cc/region.h" |
| #include "cc/scoped_ptr_hash_map.h" |
| #include "cc/tiling_data.h" |
| #include "ui/gfx/rect.h" |
| |
| namespace cc { |
| |
| class CC_EXPORT LayerTilingData { |
| public: |
| enum BorderTexelOption { HasBorderTexels, NoBorderTexels }; |
| |
| ~LayerTilingData(); |
| |
| static scoped_ptr<LayerTilingData> create(const gfx::Size& tileSize, BorderTexelOption); |
| |
| bool hasEmptyBounds() const { return m_tilingData.has_empty_bounds(); } |
| int numTilesX() const { return m_tilingData.num_tiles_x(); } |
| int numTilesY() const { return m_tilingData.num_tiles_y(); } |
| gfx::Rect tileBounds(int i, int j) const { return m_tilingData.TileBounds(i, j); } |
| gfx::Vector2d 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 gfx::Size&); |
| gfx::Size tileSize() const; |
| // Change the border texel setting. This may invalidate all existing tiles. |
| void setBorderTexelOption(BorderTexelOption); |
| bool hasBorderTexels() const { return !!m_tilingData.border_texels(); } |
| |
| 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 gfx::Rect& opaqueRect() const { return m_opaqueRect; } |
| void setOpaqueRect(const gfx::Rect& opaqueRect) { m_opaqueRect = opaqueRect; } |
| private: |
| int m_i; |
| int m_j; |
| gfx::Rect 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 gfx::Size&); |
| gfx::Size bounds() const; |
| |
| void contentRectToTileIndices(const gfx::Rect&, int &left, int &top, int &right, int &bottom) const; |
| gfx::Rect tileRect(const Tile*) const; |
| |
| Region opaqueRegionInContentRect(const gfx::Rect&) const; |
| |
| void reset(); |
| |
| protected: |
| LayerTilingData(const gfx::Size& tileSize, BorderTexelOption); |
| |
| TileMap m_tiles; |
| TilingData m_tilingData; |
| }; |
| |
| } |
| |
| #endif // CC_LAYER_TILING_DATA_H_ |