Part 1 of cc/ directory shuffles: base

cc/tiling_data.h

-// Copyright 2010 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_TILING_DATA_H_
-#define CC_TILING_DATA_H_
-
-#include "base/basictypes.h"
-#include "base/logging.h"
-#include "cc/cc_export.h"
-#include "ui/gfx/rect.h"
-#include "ui/gfx/size.h"
-
-namespace gfx {
-class Vector2d;
-}
-
-namespace cc {
-
-class CC_EXPORT TilingData {
- public:
-  TilingData();
-  TilingData(
-      gfx::Size max_texture_size,
-      gfx::Size total_size,
-      bool has_border_texels);
-  TilingData(
-      gfx::Size max_texture_size,
-      gfx::Size total_size,
-      int border_texels);
-
-  gfx::Size total_size() const { return total_size_; }
-  void SetTotalSize(const gfx::Size total_size);
-
-  gfx::Size max_texture_size() const { return max_texture_size_; }
-  void SetMaxTextureSize(gfx::Size max_texture_size);
-
-  int border_texels() const { return border_texels_; }
-  void SetHasBorderTexels(bool has_border_texels);
-  void SetBorderTexels(int 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_; }
-  // Return the tile index whose non-border texels include src_position.
-  int TileXIndexFromSrcCoord(int src_position) const;
-  int TileYIndexFromSrcCoord(int src_position) const;
-  // Return the lowest tile index whose border texels include src_position.
-  int FirstBorderTileXIndexFromSrcCoord(int src_position) const;
-  int FirstBorderTileYIndexFromSrcCoord(int src_position) const;
-  // Return the highest tile index whose border texels include src_position.
-  int LastBorderTileXIndexFromSrcCoord(int src_position) const;
-  int LastBorderTileYIndexFromSrcCoord(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;
-
-  class CC_EXPORT BaseIterator {
-   public:
-    operator bool() const { return index_x_ != -1 && index_y_ != -1; }
-
-    int index_x() const { return index_x_; }
-    int index_y() const { return index_y_; }
-    std::pair<int, int> index() const {
-     return std::make_pair(index_x_, index_y_);
-    }
-
-   protected:
-    explicit BaseIterator(const TilingData* tiling_data);
-    void done() { index_x_ = -1; index_y_ = -1; }
-
-    const TilingData* tiling_data_;
-    int index_x_;
-    int index_y_;
-  };
-
-  // Iterate through all indices whose bounds + border intersect with |rect|.
-  class CC_EXPORT Iterator : public BaseIterator {
-   public:
-    Iterator(const TilingData* tiling_data, gfx::Rect rect);
-    Iterator& operator++();
-
-   private:
-    int left_;
-    int right_;
-    int bottom_;
-  };
-
-  // Iterate through all indices whose bounds + border intersect with
-  // |consider| but which also do not intersect with |ignore|.
-  class CC_EXPORT DifferenceIterator : public BaseIterator {
-   public:
-    DifferenceIterator(
-      const TilingData* tiling_data,
-      gfx::Rect consider,
-      gfx::Rect ignore);
-    DifferenceIterator& operator++();
-
-   private:
-    bool in_ignore_rect() const {
-     return index_x_ >= ignore_left_ && index_x_ <= ignore_right_ &&
-       index_y_ >= ignore_top_ && index_y_ <= ignore_bottom_;
-    }
-
-    int consider_left_;
-    int consider_top_;
-    int consider_right_;
-    int consider_bottom_;
-    int ignore_left_;
-    int ignore_top_;
-    int ignore_right_;
-    int ignore_bottom_;
-  };
-
- 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_;
-  int border_texels_;
-
-  // These are computed values.
-  int num_tiles_x_;
-  int num_tiles_y_;
-};
-
-}  // namespace cc
-
-#endif  // CC_TILING_DATA_H_