cc/tiles/tile.h

   1 // Copyright 2012 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_TILES_TILE_H_
   6 #define CC_TILES_TILE_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "cc/tiles/tile_draw_info.h"
  10 #include "ui/gfx/geometry/rect.h"
  11 #include "ui/gfx/geometry/size.h"
  12
  13 namespace cc {
  14
  15 class PrioritizedTile;
  16 class TileManager;
  17 struct TilePriority;
  18
  19 class CC_EXPORT Tile {
  20  public:
  21   class CC_EXPORT Deleter {
  22    public:
  23     void operator()(Tile* tile) const;
  24   };
  25
  26   enum TileRasterFlags { USE_PICTURE_ANALYSIS = 1 << 0 };
  27
  28   typedef uint64 Id;
  29
  30   Id id() const {
  31     return id_;
  32   }
  33
  34   // TODO(vmpstr): Move this to the iterators.
  35   bool required_for_activation() const { return required_for_activation_; }
  36   void set_required_for_activation(bool is_required) {
  37     required_for_activation_ = is_required;
  38   }
  39   bool required_for_draw() const { return required_for_draw_; }
  40   void set_required_for_draw(bool is_required) {
  41     required_for_draw_ = is_required;
  42   }
  43
  44   bool use_picture_analysis() const {
  45     return !!(flags_ & USE_PICTURE_ANALYSIS);
  46   }
  47
  48   void AsValueInto(base::trace_event::TracedValue* value) const;
  49
  50   const TileDrawInfo& draw_info() const { return draw_info_; }
  51   TileDrawInfo& draw_info() { return draw_info_; }
  52
  53   float contents_scale() const { return contents_scale_; }
  54   gfx::Rect content_rect() const { return content_rect_; }
  55
  56   int layer_id() const { return layer_id_; }
  57
  58   int source_frame_number() const { return source_frame_number_; }
  59
  60   size_t GPUMemoryUsageInBytes() const;
  61
  62   gfx::Size desired_texture_size() const { return desired_texture_size_; }
  63
  64   void set_tiling_index(int i, int j) {
  65     tiling_i_index_ = i;
  66     tiling_j_index_ = j;
  67   }
  68   int tiling_i_index() const { return tiling_i_index_; }
  69   int tiling_j_index() const { return tiling_j_index_; }
  70
  71  private:
  72   friend class TileManager;
  73   friend class FakeTileManager;
  74   friend class FakePictureLayerImpl;
  75
  76   // Methods called by by tile manager.
  77   Tile(TileManager* tile_manager,
  78        const gfx::Size& desired_texture_size,
  79        const gfx::Rect& content_rect,
  80        float contents_scale,
  81        int layer_id,
  82        int source_frame_number,
  83        int flags);
  84   ~Tile();
  85
  86   bool HasRasterTask() const { return !!raster_task_.get(); }
  87
  88   TileManager* tile_manager_;
  89   gfx::Size desired_texture_size_;
  90   gfx::Rect content_rect_;
  91   float contents_scale_;
  92
  93   TileDrawInfo draw_info_;
  94
  95   int layer_id_;
  96   int source_frame_number_;
  97   int flags_;
  98   int tiling_i_index_;
  99   int tiling_j_index_;
 100   bool required_for_activation_ : 1;
 101   bool required_for_draw_ : 1;
 102
 103   Id id_;
 104   static Id s_next_id_;
 105
 106   unsigned scheduled_priority_;
 107
 108   scoped_refptr<RasterTask> raster_task_;
 109
 110   DISALLOW_COPY_AND_ASSIGN(Tile);
 111 };
 112
 113 using ScopedTilePtr = scoped_ptr<Tile, Tile::Deleter>;
 114
 115 }  // namespace cc
 116
 117 #endif  // CC_TILES_TILE_H_