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.
5 #ifndef CC_RESOURCES_LAYER_TILING_DATA_H_
6 #define CC_RESOURCES_LAYER_TILING_DATA_H_
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/region.h"
16 #include "cc/base/tiling_data.h"
17 #include "ui/gfx/rect.h"
21 class CC_EXPORT LayerTilingData {
23 enum BorderTexelOption {
30 static scoped_ptr<LayerTilingData> Create(gfx::Size tile_size,
31 BorderTexelOption option);
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);
39 gfx::Vector2d texture_offset(int x_index, int y_index) const {
40 return tiling_data_.TextureOffset(x_index, y_index);
43 // Change the tile size. This may invalidate all the existing tiles.
44 void SetTileSize(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(); }
50 bool is_empty() const { return has_empty_bounds() || !tiles().size(); }
52 const LayerTilingData& operator=(const LayerTilingData&);
56 Tile() : i_(-1), j_(-1) {}
59 int i() const { return i_; }
60 int j() const { return j_; }
61 void move_to(int i, int j) {
66 gfx::Rect opaque_rect() const { return opaque_rect_; }
67 void set_opaque_rect(gfx::Rect opaque_rect) { opaque_rect_ = opaque_rect; }
71 gfx::Rect opaque_rect_;
72 DISALLOW_COPY_AND_ASSIGN(Tile);
74 typedef std::pair<int, int> TileMapKey;
75 typedef base::ScopedPtrHashMap<TileMapKey, Tile> TileMap;
77 void AddTile(scoped_ptr<Tile> tile, int i, int j);
78 scoped_ptr<Tile> TakeTile(int i, int j);
79 Tile* TileAt(int i, int j) const;
80 const TileMap& tiles() const { return tiles_; }
82 void SetBounds(gfx::Size size);
83 gfx::Size bounds() const { return tiling_data_.total_size(); }
85 void ContentRectToTileIndices(gfx::Rect rect,
90 gfx::Rect TileRect(const Tile* tile) const;
92 Region OpaqueRegionInContentRect(gfx::Rect rect) const;
94 void reset() { tiles_.clear(); }
97 LayerTilingData(gfx::Size tile_size, BorderTexelOption option);
100 TilingData tiling_data_;
102 DISALLOW_COPY(LayerTilingData);
107 #endif // CC_RESOURCES_LAYER_TILING_DATA_H_