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   Region occlusion_from_inside_target() const {
  22     return OcclusionTracker<LayerType>::stack_.back()
  23         .occlusion_from_inside_target;
  24   }
  25   Region occlusion_from_outside_target() const {
  26     return OcclusionTracker<LayerType>::stack_.back()
  27         .occlusion_from_outside_target;
  28   }
  29
  30   Region occlusion_on_contributing_surface_from_inside_target() const {
  31     size_t stack_size = OcclusionTracker<LayerType>::stack_.size();
  32     if (stack_size < 2)
  33       return Region();
  34     return OcclusionTracker<LayerType>::stack_[stack_size - 2]
  35         .occlusion_from_inside_target;
  36   }
  37   Region occlusion_on_contributing_surface_from_outside_target() const {
  38     size_t stack_size = OcclusionTracker<LayerType>::stack_.size();
  39     if (stack_size < 2)
  40       return Region();
  41     return OcclusionTracker<LayerType>::stack_[stack_size - 2]
  42         .occlusion_from_outside_target;
  43   }
  44
  45   void set_occlusion_from_outside_target(const Region& region) {
  46     OcclusionTracker<LayerType>::stack_.back().occlusion_from_outside_target =
  47         region;
  48   }
  49   void set_occlusion_from_inside_target(const Region& region) {
  50     OcclusionTracker<LayerType>::stack_.back().occlusion_from_inside_target =
  51         region;
  52   }
  53 };
  54
  55 }  // namespace cc
  56
  57 #endif  // CC_TEST_TEST_OCCLUSION_TRACKER_H_