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1 // Copyright 2011 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CC_RESOURCES_LAYER_TILING_DATA_H_ | |
6 #define CC_RESOURCES_LAYER_TILING_DATA_H_ | |
7 | |
8 #include <utility> | |
9 | |
10 #include "base/basictypes.h" | |
11 #include "base/containers/hash_tables.h" | |
12 #include "base/containers/scoped_ptr_hash_map.h" | |
13 #include "base/memory/scoped_ptr.h" | |
14 #include "cc/base/cc_export.h" | |
15 #include "cc/base/simple_enclosed_region.h" | |
16 #include "cc/base/tiling_data.h" | |
17 #include "ui/gfx/geometry/rect.h" | |
18 | |
19 namespace cc { | |
20 | |
21 class CC_EXPORT LayerTilingData { | |
22 public: | |
23 enum BorderTexelOption { | |
24 HAS_BORDER_TEXELS, | |
25 NO_BORDER_TEXELS | |
26 }; | |
27 | |
28 ~LayerTilingData(); | |
29 | |
30 static scoped_ptr<LayerTilingData> Create(const gfx::Size& tile_size, | |
31 BorderTexelOption option); | |
32 | |
33 bool has_empty_bounds() const { return tiling_data_.has_empty_bounds(); } | |
34 int num_tiles_x() const { return tiling_data_.num_tiles_x(); } | |
35 int num_tiles_y() const { return tiling_data_.num_tiles_y(); } | |
36 gfx::Rect tile_bounds(int i, int j) const { | |
37 return tiling_data_.TileBounds(i, j); | |
38 } | |
39 gfx::Vector2d texture_offset(int x_index, int y_index) const { | |
40 return tiling_data_.TextureOffset(x_index, y_index); | |
41 } | |
42 | |
43 // Change the tile size. This may invalidate all the existing tiles. | |
44 void SetTileSize(const gfx::Size& size); | |
45 gfx::Size tile_size() const; | |
46 // Change the border texel setting. This may invalidate all existing tiles. | |
47 void SetBorderTexelOption(BorderTexelOption option); | |
48 bool has_border_texels() const { return !!tiling_data_.border_texels(); } | |
49 | |
50 bool is_empty() const { return has_empty_bounds() || !tiles().size(); } | |
51 | |
52 const LayerTilingData& operator=(const LayerTilingData&); | |
53 | |
54 class Tile { | |
55 public: | |
56 Tile() : i_(-1), j_(-1) {} | |
57 virtual ~Tile() {} | |
58 | |
59 int i() const { return i_; } | |
60 int j() const { return j_; } | |
61 void move_to(int i, int j) { | |
62 i_ = i; | |
63 j_ = j; | |
64 } | |
65 | |
66 private: | |
67 int i_; | |
68 int j_; | |
69 DISALLOW_COPY_AND_ASSIGN(Tile); | |
70 }; | |
71 typedef std::pair<int, int> TileMapKey; | |
72 typedef base::ScopedPtrHashMap<TileMapKey, scoped_ptr<Tile>> TileMap; | |
73 | |
74 void AddTile(scoped_ptr<Tile> tile, int i, int j); | |
75 scoped_ptr<Tile> TakeTile(int i, int j); | |
76 Tile* TileAt(int i, int j) const; | |
77 const TileMap& tiles() const { return tiles_; } | |
78 | |
79 void SetTilingSize(const gfx::Size& tiling_size); | |
80 gfx::Size tiling_size() const { return tiling_data_.tiling_size(); } | |
81 | |
82 void ContentRectToTileIndices(const gfx::Rect& rect, | |
83 int* left, | |
84 int* top, | |
85 int* right, | |
86 int* bottom) const; | |
87 gfx::Rect TileRect(const Tile* tile) const; | |
88 | |
89 void reset() { tiles_.clear(); } | |
90 | |
91 protected: | |
92 LayerTilingData(const gfx::Size& tile_size, BorderTexelOption option); | |
93 | |
94 TileMap tiles_; | |
95 TilingData tiling_data_; | |
96 | |
97 DISALLOW_COPY(LayerTilingData); | |
98 }; | |
99 | |
100 } // namespace cc | |
101 | |
102 #endif // CC_RESOURCES_LAYER_TILING_DATA_H_ | |
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