src/cc/test/test_occlusion_tracker.h

   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 #ifndef CC_TEST_TEST_OCCLUSION_TRACKER_H_
   6 #define CC_TEST_TEST_OCCLUSION_TRACKER_H_
   7
   8 #include "cc/layers/render_surface.h"
   9 #include "cc/layers/render_surface_impl.h"
  10 #include "cc/trees/occlusion_tracker.h"
  11
  12 namespace cc {
  13
  14 // A subclass to expose the total current occlusion.
  15 template <typename LayerType>
  16 class TestOcclusionTracker : public OcclusionTracker<LayerType> {
  17  public:
  18   explicit TestOcclusionTracker(const gfx::Rect& screen_scissor_rect)
  19       : OcclusionTracker<LayerType>(screen_scissor_rect) {}
  20
  21   SimpleEnclosedRegion occlusion_from_inside_target() const {
  22     return OcclusionTracker<LayerType>::stack_.back()
  23         .occlusion_from_inside_target;
  24   }
  25   SimpleEnclosedRegion occlusion_from_outside_target() const {
  26     return OcclusionTracker<LayerType>::stack_.back()
  27         .occlusion_from_outside_target;
  28   }
  29
  30   SimpleEnclosedRegion occlusion_on_contributing_surface_from_inside_target()
  31       const {
  32     size_t stack_size = OcclusionTracker<LayerType>::stack_.size();
  33     if (stack_size < 2)
  34       return SimpleEnclosedRegion();
  35     return OcclusionTracker<LayerType>::stack_[stack_size - 2]
  36         .occlusion_from_inside_target;
  37   }
  38   SimpleEnclosedRegion occlusion_on_contributing_surface_from_outside_target()
  39       const {
  40     size_t stack_size = OcclusionTracker<LayerType>::stack_.size();
  41     if (stack_size < 2)
  42       return SimpleEnclosedRegion();
  43     return OcclusionTracker<LayerType>::stack_[stack_size - 2]
  44         .occlusion_from_outside_target;
  45   }
  46
  47   void set_occlusion_from_outside_target(const SimpleEnclosedRegion& region) {
  48     OcclusionTracker<LayerType>::stack_.back().occlusion_from_outside_target =
  49         region;
  50   }
  51   void set_occlusion_from_inside_target(const SimpleEnclosedRegion& region) {
  52     OcclusionTracker<LayerType>::stack_.back().occlusion_from_inside_target =
  53         region;
  54   }
  55
  56   void set_occlusion_on_contributing_surface_from_outside_target(
  57       const SimpleEnclosedRegion& region) {
  58     size_t stack_size = OcclusionTracker<LayerType>::stack_.size();
  59     DCHECK_GE(stack_size, 2u);
  60     OcclusionTracker<LayerType>::stack_[stack_size - 2]
  61         .occlusion_from_outside_target = region;
  62   }
  63   void set_occlusion_on_contributing_surface_from_inside_target(
  64       const SimpleEnclosedRegion& region) {
  65     size_t stack_size = OcclusionTracker<LayerType>::stack_.size();
  66     DCHECK_GE(stack_size, 2u);
  67     OcclusionTracker<LayerType>::stack_[stack_size - 2]
  68         .occlusion_from_inside_target = region;
  69   }
  70 };
  71
  72 }  // namespace cc
  73
  74 #endif  // CC_TEST_TEST_OCCLUSION_TRACKER_H_