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 "cc/output/overlay_strategy_underlay.h"
  10 #include "ui/gfx/geometry/rect_conversions.h"
  11 #include "ui/gfx/transform.h"
  12
  13 namespace cc {
  14
  15 OverlayProcessor::OverlayProcessor(OutputSurface* surface) : surface_(surface) {
  16 }
  17
  18 void OverlayProcessor::Initialize() {
  19   DCHECK(surface_);
  20   OverlayCandidateValidator* validator =
  21       surface_->GetOverlayCandidateValidator();
  22   if (validator)
  23     validator->GetStrategies(&strategies_);
  24 }
  25
  26 OverlayProcessor::~OverlayProcessor() {}
  27
  28 void OverlayProcessor::ProcessForOverlays(
  29     RenderPassList* render_passes_in_draw_order,
  30     OverlayCandidateList* candidate_list) {
  31   for (StrategyList::iterator it = strategies_.begin(); it != strategies_.end();
  32        ++it) {
  33     if ((*it)->Attempt(render_passes_in_draw_order, candidate_list,
  34                        surface_->device_scale_factor())) {
  35       return;
  36     }
  37   }
  38 }
  39
  40 }  // namespace cc