cc/test/mock_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_MOCK_OCCLUSION_TRACKER_H_
   6 #define CC_TEST_MOCK_OCCLUSION_TRACKER_H_
   7
   8 #include "cc/trees/occlusion_tracker.h"
   9
  10 namespace cc {
  11
  12 template <typename LayerType>
  13 class MockOcclusionTracker : public OcclusionTracker<LayerType> {
  14   // This class is used for testing only. It fakes just enough information to
  15   // calculate unoccluded content rect and unoccluded contributing surface
  16   // content rect. It calls the helper function of occlusion tracker to avoid
  17   // DCHECKs since testing environment won't be set up properly to pass those.
  18  public:
  19   MockOcclusionTracker()
  20       : OcclusionTracker<LayerType>(gfx::Rect(0, 0, 1000, 1000)) {
  21     typename OcclusionTracker<LayerType>::StackObject stack_obj;
  22     OcclusionTracker<LayerType>::stack_.push_back(stack_obj);
  23     OcclusionTracker<LayerType>::stack_.push_back(stack_obj);
  24   }
  25
  26   explicit MockOcclusionTracker(const gfx::Rect& screen_scissor_rect)
  27       : OcclusionTracker<LayerType>(screen_scissor_rect) {
  28     typename OcclusionTracker<LayerType>::StackObject stack_obj;
  29     OcclusionTracker<LayerType>::stack_.push_back(stack_obj);
  30     OcclusionTracker<LayerType>::stack_.push_back(stack_obj);
  31   }
  32
  33   void set_occluded_target_rect(const gfx::Rect& occluded) {
  34     OcclusionTracker<LayerType>::stack_.back().occlusion_from_inside_target =
  35         occluded;
  36   }
  37
  38   void set_occluded_target_rect_for_contributing_surface(
  39       const gfx::Rect& occluded) {
  40     OcclusionTracker<
  41         LayerType>::stack_[OcclusionTracker<LayerType>::stack_.size() - 2]
  42         .occlusion_from_inside_target = occluded;
  43   }
  44
  45  private:
  46   DISALLOW_COPY_AND_ASSIGN(MockOcclusionTracker);
  47 };
  48
  49 }  // namespace cc
  50
  51 #endif  // CC_TEST_MOCK_OCCLUSION_TRACKER_H_