cc/resources/prioritized_tile_set.h

   1 // Copyright 2013 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_PRIORITIZED_TILE_SET_H_
   6 #define CC_RESOURCES_PRIORITIZED_TILE_SET_H_
   7
   8 #include <vector>
   9
  10 #include "cc/base/cc_export.h"
  11 #include "cc/resources/managed_tile_state.h"
  12
  13 namespace cc {
  14 class Tile;
  15
  16 class CC_EXPORT PrioritizedTileSet {
  17  public:
  18   PrioritizedTileSet();
  19   ~PrioritizedTileSet();
  20
  21   void InsertTile(Tile* tile, ManagedTileBin bin);
  22   void Clear();
  23   bool IsEmpty();
  24
  25   class CC_EXPORT Iterator {
  26    public:
  27     Iterator(PrioritizedTileSet* set, bool use_priority_ordering);
  28
  29     ~Iterator();
  30
  31     void DisablePriorityOrdering();
  32
  33     Iterator& operator++();
  34     Tile* operator->() { return *(*this); }
  35     Tile* operator*();
  36     operator bool() const {
  37       return iterator_ != tile_set_->tiles_[current_bin_].end();
  38     }
  39
  40    private:
  41     void AdvanceList();
  42
  43     PrioritizedTileSet* tile_set_;
  44     ManagedTileBin current_bin_;
  45     std::vector<Tile*>::iterator iterator_;
  46     bool use_priority_ordering_;
  47   };
  48
  49  private:
  50   friend class Iterator;
  51
  52   void SortBinIfNeeded(ManagedTileBin bin);
  53
  54   std::vector<Tile*> tiles_[NUM_BINS];
  55   bool bin_sorted_[NUM_BINS];
  56 };
  57
  58 }  // namespace cc
  59
  60 #endif  // CC_RESOURCES_PRIORITIZED_TILE_SET_H_