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
10namespace cc {
11
12template <typename LayerType>
13class 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_
52