cc/resources/raster_tile_priority_queue_required.cc

   1 // Copyright 2015 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 #include "cc/resources/raster_tile_priority_queue_required.h"
   6
   7 #include "cc/resources/tiling_set_raster_queue_required.h"
   8
   9 namespace cc {
  10
  11 RasterTilePriorityQueueRequired::RasterTilePriorityQueueRequired() {
  12 }
  13
  14 RasterTilePriorityQueueRequired::~RasterTilePriorityQueueRequired() {
  15 }
  16
  17 void RasterTilePriorityQueueRequired::Build(
  18     const std::vector<PictureLayerImpl::Pair>& paired_layers,
  19     Type type) {
  20   DCHECK_NE(static_cast<int>(type), static_cast<int>(Type::ALL));
  21   for (const auto& pair : paired_layers) {
  22     PictureLayerTilingSet* tiling_set = nullptr;
  23     if (type == Type::REQUIRED_FOR_DRAW && pair.active)
  24       tiling_set = pair.active->picture_layer_tiling_set();
  25     else if (type == Type::REQUIRED_FOR_ACTIVATION && pair.pending)
  26       tiling_set = pair.pending->picture_layer_tiling_set();
  27
  28     if (!tiling_set)
  29       continue;
  30
  31     scoped_ptr<TilingSetRasterQueueRequired> tiling_set_queue(
  32         new TilingSetRasterQueueRequired(tiling_set, type));
  33     if (tiling_set_queue->IsEmpty())
  34       continue;
  35     tiling_set_queues_.push_back(tiling_set_queue.Pass());
  36   }
  37 }
  38
  39 bool RasterTilePriorityQueueRequired::IsEmpty() const {
  40   return tiling_set_queues_.empty();
  41 }
  42
  43 Tile* RasterTilePriorityQueueRequired::Top() {
  44   DCHECK(!IsEmpty());
  45   return tiling_set_queues_.back()->Top();
  46 }
  47
  48 void RasterTilePriorityQueueRequired::Pop() {
  49   DCHECK(!IsEmpty());
  50   tiling_set_queues_.back()->Pop();
  51   if (tiling_set_queues_.back()->IsEmpty())
  52     tiling_set_queues_.pop_back();
  53 }
  54
  55 }  // namespace cc