cc/output/overlay_processor.cc

   1 // Copyright 2014 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/output/overlay_processor.h"
   6
   7 #include "cc/output/output_surface.h"
   8 #include "cc/output/overlay_strategy_single_on_top.h"
   9 #include "ui/gfx/geometry/rect_conversions.h"
  10 #include "ui/gfx/transform.h"
  11
  12 namespace cc {
  13
  14 OverlayProcessor::OverlayProcessor(OutputSurface* surface,
  15                                    ResourceProvider* resource_provider)
  16     : surface_(surface), resource_provider_(resource_provider) {}
  17
  18 void OverlayProcessor::Initialize() {
  19   DCHECK(surface_);
  20   if (!resource_provider_)
  21     return;
  22
  23   OverlayCandidateValidator* candidates =
  24       surface_->GetOverlayCandidateValidator();
  25   if (candidates) {
  26     strategies_.push_back(scoped_ptr<Strategy>(
  27         new OverlayStrategySingleOnTop(candidates, resource_provider_)));
  28   }
  29 }
  30
  31 OverlayProcessor::~OverlayProcessor() {}
  32
  33 void OverlayProcessor::ProcessForOverlays(
  34     RenderPassList* render_passes_in_draw_order,
  35     OverlayCandidateList* candidate_list) {
  36   for (StrategyList::iterator it = strategies_.begin(); it != strategies_.end();
  37        ++it) {
  38     if ((*it)->Attempt(render_passes_in_draw_order, candidate_list))
  39       return;
  40   }
  41 }
  42
  43 }  // namespace cc