cc/resources/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_RESOURCES_TILE_H_
   6 #define CC_RESOURCES_TILE_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "cc/resources/raster_source.h"
  10 #include "cc/resources/tile_draw_info.h"
  11 #include "ui/gfx/geometry/rect.h"
  12 #include "ui/gfx/geometry/size.h"
  13
  14 namespace cc {
  15
  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   RasterSource* raster_source() { return raster_source_.get(); }
  35
  36   const RasterSource* raster_source() const { return raster_source_.get(); }
  37
  38   // TODO(vmpstr): Move this to the iterators.
  39   bool required_for_activation() const { return required_for_activation_; }
  40   void set_required_for_activation(bool is_required) {
  41     required_for_activation_ = is_required;
  42   }
  43   bool required_for_draw() const { return required_for_draw_; }
  44   void set_required_for_draw(bool is_required) {
  45     required_for_draw_ = is_required;
  46   }
  47
  48   bool use_picture_analysis() const {
  49     return !!(flags_ & USE_PICTURE_ANALYSIS);
  50   }
  51
  52   bool HasResource() const { return draw_info_.has_resource(); }
  53   bool NeedsRaster() const {
  54     return draw_info_.mode() == TileDrawInfo::OOM_MODE ||
  55            !draw_info_.IsReadyToDraw();
  56   }
  57
  58   void AsValueWithPriorityInto(const TilePriority& priority,
  59                                base::trace_event::TracedValue* dict) const;
  60
  61   inline bool IsReadyToDraw() const { return draw_info_.IsReadyToDraw(); }
  62
  63   const TileDrawInfo& draw_info() const { return draw_info_; }
  64
  65   TileDrawInfo& draw_info() { return draw_info_; }
  66
  67   float contents_scale() const { return contents_scale_; }
  68   gfx::Rect content_rect() const { return content_rect_; }
  69
  70   int layer_id() const { return layer_id_; }
  71
  72   int source_frame_number() const { return source_frame_number_; }
  73
  74   void set_raster_source(RasterSource* raster_source) {
  75     DCHECK(raster_source->CoversRect(content_rect_, contents_scale_))
  76         << "Recording rect: "
  77         << gfx::ScaleToEnclosingRect(content_rect_, 1.f / contents_scale_)
  78                .ToString();
  79     raster_source_ = raster_source;
  80   }
  81
  82   size_t GPUMemoryUsageInBytes() const;
  83
  84   gfx::Size desired_texture_size() const { return desired_texture_size_; }
  85
  86   void set_tiling_index(int i, int j) {
  87     tiling_i_index_ = i;
  88     tiling_j_index_ = j;
  89   }
  90   int tiling_i_index() const { return tiling_i_index_; }
  91   int tiling_j_index() const { return tiling_j_index_; }
  92
  93  private:
  94   friend class TileManager;
  95   friend class FakeTileManager;
  96   friend class FakePictureLayerImpl;
  97
  98   // Methods called by by tile manager.
  99   Tile(TileManager* tile_manager,
 100        RasterSource* raster_source,
 101        const gfx::Size& desired_texture_size,
 102        const gfx::Rect& content_rect,
 103        float contents_scale,
 104        int layer_id,
 105        int source_frame_number,
 106        int flags);
 107   ~Tile();
 108
 109   bool HasRasterTask() const { return !!raster_task_.get(); }
 110
 111   TileManager* tile_manager_;
 112   scoped_refptr<RasterSource> raster_source_;
 113   gfx::Size desired_texture_size_;
 114   gfx::Rect content_rect_;
 115   float contents_scale_;
 116
 117   TileDrawInfo draw_info_;
 118
 119   int layer_id_;
 120   int source_frame_number_;
 121   int flags_;
 122   int tiling_i_index_;
 123   int tiling_j_index_;
 124   bool required_for_activation_ : 1;
 125   bool required_for_draw_ : 1;
 126
 127   Id id_;
 128   static Id s_next_id_;
 129
 130   unsigned scheduled_priority_;
 131
 132   scoped_refptr<RasterTask> raster_task_;
 133
 134   DISALLOW_COPY_AND_ASSIGN(Tile);
 135 };
 136
 137 using ScopedTilePtr = scoped_ptr<Tile, Tile::Deleter>;
 138
 139 }  // namespace cc
 140
 141 #endif  // CC_RESOURCES_TILE_H_