1 files changed, 107 insertions, 0 deletions
diff --git a/chromium/cc/resources/layer_tiling_data.h b/chromium/cc/resources/layer_tiling_data.h
new file mode 100644
index 00000000000..51565eba3b2
--- /dev/null
+++ b/chromium/cc/resources/layer_tiling_data.h
@@ -0,0 +1,107 @@
+// 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_RESOURCES_LAYER_TILING_DATA_H_
+#define CC_RESOURCES_LAYER_TILING_DATA_H_
+
+#include <utility>
+
+#include "base/basictypes.h"
+#include "base/containers/hash_tables.h"
+#include "base/memory/scoped_ptr.h"
+#include "cc/base/cc_export.h"
+#include "cc/base/region.h"
+#include "cc/base/scoped_ptr_hash_map.h"
+#include "cc/base/tiling_data.h"
+#include "ui/gfx/rect.h"
+
+namespace cc {
+
+class CC_EXPORT LayerTilingData {
+ public:
+  enum BorderTexelOption {
+    HAS_BORDER_TEXELS,
+    NO_BORDER_TEXELS
+  };
+
+  ~LayerTilingData();
+
+  static scoped_ptr<LayerTilingData> Create(gfx::Size tile_size,
+                                            BorderTexelOption option);
+
+  bool has_empty_bounds() const { return tiling_data_.has_empty_bounds(); }
+  int num_tiles_x() const { return tiling_data_.num_tiles_x(); }
+  int num_tiles_y() const { return tiling_data_.num_tiles_y(); }
+  gfx::Rect tile_bounds(int i, int j) const {
+    return tiling_data_.TileBounds(i, j);
+  }
+  gfx::Vector2d texture_offset(int x_index, int y_index) const {
+    return tiling_data_.TextureOffset(x_index, y_index);
+  }
+
+  // Change the tile size. This may invalidate all the existing tiles.
+  void SetTileSize(gfx::Size size);
+  gfx::Size tile_size() const;
+  // Change the border texel setting. This may invalidate all existing tiles.
+  void SetBorderTexelOption(BorderTexelOption option);
+  bool has_border_texels() const { return !!tiling_data_.border_texels(); }
+
+  bool is_empty() const { return has_empty_bounds() || !tiles().size(); }
+
+  const LayerTilingData& operator=(const LayerTilingData&);
+
+  class Tile {
+   public:
+    Tile() : i_(-1), j_(-1) {}
+    virtual ~Tile() {}
+
+    int i() const { return i_; }
+    int j() const { return j_; }
+    void move_to(int i, int j) {
+      i_ = i;
+      j_ = j;
+    }
+
+    gfx::Rect opaque_rect() const { return opaque_rect_; }
+    void set_opaque_rect(gfx::Rect opaque_rect) { opaque_rect_ = opaque_rect; }
+   private:
+    int i_;
+    int j_;
+    gfx::Rect opaque_rect_;
+    DISALLOW_COPY_AND_ASSIGN(Tile);
+  };
+  typedef std::pair<int, int> TileMapKey;
+  typedef ScopedPtrHashMap<TileMapKey, Tile> TileMap;
+
+  void AddTile(scoped_ptr<Tile> tile, int i, int j);
+  scoped_ptr<Tile> TakeTile(int i, int j);
+  Tile* TileAt(int i, int j) const;
+  const TileMap& tiles() const { return tiles_; }
+
+  void SetBounds(gfx::Size size);
+  gfx::Size bounds() const { return tiling_data_.total_size(); }
+
+  void ContentRectToTileIndices(gfx::Rect rect,
+                                int* left,
+                                int* top,
+                                int* right,
+                                int* bottom) const;
+  gfx::Rect TileRect(const Tile* tile) const;
+
+  Region OpaqueRegionInContentRect(gfx::Rect rect) const;
+
+  void reset() { tiles_.clear(); }
+
+ protected:
+  LayerTilingData(gfx::Size tile_size, BorderTexelOption option);
+
+  TileMap tiles_;
+  TilingData tiling_data_;
+
+  DISALLOW_COPY(LayerTilingData);
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_LAYER_TILING_DATA_H_