Create cc::TilingData based on WebCore::TilingData.

cc/tiling_data.h

+// Copyright 2010 The Chromium Authors. All rights reserved.

[tfarina, 2012/11/02 00:19:07]

2010 -> 2012?

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CC_TILING_DATA_H_
+#define CC_TILING_DATA_H_
+
+#include "base/basictypes.h"
+#include "base/logging.h"
+#include "ui/gfx/size.h"
+
+namespace gfx {
+class Rect;
+class Vector2d;
+}
+
+namespace cc {
+
+class TilingData {
+ public:
+  TilingData(gfx::Size max_texture_size, gfx::Size total_size, bool has_border_texels);
+  ~TilingData();
+
+  gfx::Size total_size() const { return total_size_; }

[tfarina, 2012/11/02 00:18:46]

const-ref as well.

[danakj, 2012/11/02 00:28:03]

no const ref for <= 4 ints :)

+  void SetTotalSize(const gfx::Size total_size);

[tfarina, 2012/11/02 00:18:46]

const-ref!

+
+  gfx::Size max_texture_size() const { return max_texture_size_; }
+  void SetMaxTextureSize(gfx::Size max_texture_size);

[tfarina, 2012/11/02 00:18:46]

const-ref!

Same at the ctor!

+
+  int border_texels() const { return border_texels_; }
+  void SetHasBorderTexels(bool has_border_texels);
+
+  bool has_empty_bounds() const { return !num_tiles_x_ || !num_tiles_y_; }
+  int num_tiles_x() const { return num_tiles_x_; }
+  int num_tiles_y() const { return num_tiles_y_; }
+  int TileXIndexFromSrcCoord(int src_position) const;
+  int TileYIndexFromSrcCoord(int src_position) const;
+
+  gfx::Rect TileBounds(int i, int j) const;
+  gfx::Rect TileBoundsWithBorder(int i, int j) const;
+  int TilePositionX(int x_index) const;
+  int TilePositionY(int y_index) const;
+  int TileSizeX(int x_index) const;
+  int TileSizeY(int y_index) const;
+
+  // Difference between TileBound's and TileBoundWithBorder's origin().
+  gfx::Vector2d TextureOffset(int x_index, int y_index) const;
+
+ private:
+  void AssertTile(int i, int j) const {
+    DCHECK_GE(i,  0);
+    DCHECK_LT(i, num_tiles_x_);
+    DCHECK_GE(j, 0);
+    DCHECK_LT(j, num_tiles_y_);
+  }
+
+  void RecomputeNumTiles();
+
+  gfx::Size max_texture_size_;
+  gfx::Size total_size_;
+  // This value is always 0 or 1.
+  int border_texels_;
+
+  // These are computed values.
+  int num_tiles_x_;
+  int num_tiles_y_;
+};
+
+}  // namespace cc
+
+#endif  // CC_TILING_DATA_H_