src/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
  24   class CC_EXPORT Iterator {
  25    public:
  26     Iterator(PrioritizedTileSet* set, bool use_priority_ordering);
  27
  28     ~Iterator();
  29
  30     void DisablePriorityOrdering();
  31
  32     Iterator& operator++();
  33     Tile* operator->() { return *(*this); }
  34     Tile* operator*();
  35     operator bool() const {
  36       return iterator_ != tile_set_->tiles_[current_bin_].end();
  37     }
  38
  39    private:
  40     void AdvanceList();
  41
  42     PrioritizedTileSet* tile_set_;
  43     ManagedTileBin current_bin_;
  44     std::vector<Tile*>::iterator iterator_;
  45     bool use_priority_ordering_;
  46   };
  47
  48  private:
  49   friend class Iterator;
  50
  51   void SortBinIfNeeded(ManagedTileBin bin);
  52
  53   std::vector<Tile*> tiles_[NUM_BINS];
  54   bool bin_sorted_[NUM_BINS];
  55 };
  56
  57 }  // namespace cc
  58
  59 #endif  // CC_RESOURCES_PRIORITIZED_TILE_SET_H_