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      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 "cc/quads/draw_quad.h"
     10 #include "cc/quads/texture_draw_quad.h"
     11 #include "ui/gfx/rect_conversions.h"
     12 #include "ui/gfx/transform.h"
     13 
     14 namespace cc {
     15 
     16 OverlayProcessor::OverlayProcessor(OutputSurface* surface,
     17                                    ResourceProvider* resource_provider)
     18     : surface_(surface), resource_provider_(resource_provider) {}
     19 
     20 void OverlayProcessor::Initialize() {
     21   DCHECK(surface_);
     22   if (!resource_provider_)
     23     return;
     24 
     25   OverlayCandidateValidator* candidates =
     26       surface_->overlay_candidate_validator();
     27   if (candidates) {
     28     strategies_.push_back(scoped_ptr<Strategy>(
     29         new OverlayStrategySingleOnTop(candidates, resource_provider_)));
     30   }
     31 }
     32 
     33 OverlayProcessor::~OverlayProcessor() {}
     34 
     35 void OverlayProcessor::ProcessForOverlays(
     36     RenderPassList* render_passes_in_draw_order,
     37     OverlayCandidateList* candidate_list) {
     38   for (StrategyList::iterator it = strategies_.begin(); it != strategies_.end();
     39        ++it) {
     40     if ((*it)->Attempt(render_passes_in_draw_order, candidate_list))
     41       return;
     42   }
     43 }
     44 
     45 }  // namespace cc
     46