cc/tiles/raster_tile_priority_queue.h

   1 // Copyright 2014 The Chromium Authors
   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_RASTER_TILE_PRIORITY_QUEUE_H_
   6 #define CC_TILES_RASTER_TILE_PRIORITY_QUEUE_H_
   7
   8 #include <vector>
   9
  10 #include "cc/cc_export.h"
  11 #include "cc/layers/picture_layer_impl.h"
  12 #include "cc/tiles/tile_priority.h"
  13
  14 namespace cc {
  15 class PrioritizedTile;
  16
  17 class CC_EXPORT RasterTilePriorityQueue {
  18  public:
  19   enum class Type { ALL, REQUIRED_FOR_ACTIVATION, REQUIRED_FOR_DRAW };
  20
  21   static std::unique_ptr<RasterTilePriorityQueue> Create(
  22       const std::vector<PictureLayerImpl*>& active_layers,
  23       const std::vector<PictureLayerImpl*>& pending_layers,
  24       TreePriority tree_priority,
  25       Type type);
  26
  27   virtual ~RasterTilePriorityQueue() {}
  28   RasterTilePriorityQueue(const RasterTilePriorityQueue&) = delete;
  29
  30   RasterTilePriorityQueue& operator=(const RasterTilePriorityQueue&) = delete;
  31
  32   virtual bool IsEmpty() const = 0;
  33   virtual const PrioritizedTile& Top() const = 0;
  34   virtual void Pop() = 0;
  35
  36  protected:
  37   RasterTilePriorityQueue() {}
  38 };
  39
  40 }  // namespace cc
  41
  42 #endif  // CC_TILES_RASTER_TILE_PRIORITY_QUEUE_H_