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1 // Copyright 2017 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 COMPONENTS_VIZ_SERVICE_HIT_TEST_HIT_TEST_AGGREGATOR_H_ | |
6 #define COMPONENTS_VIZ_SERVICE_HIT_TEST_HIT_TEST_AGGREGATOR_H_ | |
7 | |
8 #include "cc/surfaces/surface_id.h" | |
9 #include "cc/surfaces/surface_observer.h" | |
10 #include "components/viz/common/hit_test/display_hit_test_data.h" | |
11 #include "components/viz/service/hit_test/display_hit_test_data_factory.h" | |
12 #include "components/viz/service/viz_service_export.h" | |
13 #include "services/viz/hit_test/public/interfaces/hit_test_data.mojom.h" | |
14 | |
15 namespace viz { | |
16 namespace hit_test { | |
17 | |
18 namespace test { | |
19 class HitTestAggregatorTest; | |
20 } | |
21 | |
22 // HitTest maintains maping between display regions and associated surfaces | |
varkha
2017/06/19 21:15:05
HitTestAggregator?
gklassen
2017/06/20 16:09:39
Done.
| |
23 // in shared memory to enable efficient hit testing across processes. | |
24 // | |
25 // This is intended to be created in the viz or GPU process. For mus+ash this | |
26 // will be true after the mus process split. | |
27 | |
28 using HitTestDataMap = std::map<cc::SurfaceId, hit_test::mojom::HitTestDataPtr>; | |
29 | |
30 class VIZ_SERVICE_EXPORT HitTestAggregator : public cc::SurfaceObserver { | |
31 public: | |
32 HitTestAggregator( | |
33 std::unique_ptr<DisplayHitTestDataFactory> display_hit_test_data_factory); | |
34 ~HitTestAggregator(); | |
35 | |
36 // Called when HitTestData is submitted along with every call | |
37 // to SubmitCompositorFrame. This is collected in pending_ until | |
38 // surfaces are aggregated and put on the display. | |
39 void SubmitHitTestData(hit_test::mojom::HitTestDataPtr hit_test_data); | |
40 | |
41 // Called after surfaces have been aggregated into the DisplayFrame. | |
42 // In this call HitTestData structures received from active surfaces | |
43 // are aggregated into the DisplayHitTestData structure in | |
44 // shared memory used for event targetting. | |
45 void Aggregate(cc::SurfaceId display_surface_id); | |
46 | |
47 // Performs the work of Aggregate by creating a PostTask so that | |
48 // the work is not directly on the call. | |
49 void PostTaskAggregate(cc::SurfaceId display_surface_id); | |
50 | |
51 // Called at BeginFrame to swap buffers in shared memory. | |
varkha
2017/06/19 21:15:05
nit: Maybe "Called at BeginFrame. Swaps buffers in
gklassen
2017/06/20 16:09:39
Done.
| |
52 void Swap(); | |
53 | |
54 DisplayHitTestRegion* GetCurrentRegions(); | |
varkha
2017/06/19 21:15:05
Comment?
gklassen
2017/06/20 16:09:38
Done.
| |
55 | |
56 private: | |
57 friend class test::HitTestAggregatorTest; | |
58 | |
59 HitTestDataMap pending_; | |
60 HitTestDataMap active_; | |
varkha
2017/06/19 21:15:04
nit: move after methods?
gklassen
2017/06/20 16:09:39
Done.
| |
61 | |
62 // Keep track of the number of regions in the active list | |
varkha
2017/06/19 21:15:04
nit: Keeps.
gklassen
2017/06/20 16:09:39
Done.
| |
63 // so that we know when we exceed the available length. | |
64 int active_region_count_; | |
65 | |
66 std::unique_ptr<DisplayHitTestDataFactory> display_hit_test_data_factory_; | |
67 | |
68 DisplayHitTestData* display_hit_test_data_; | |
69 | |
70 // Allocates memory for the DisplayHitTestData Structure. | |
71 void AllocateDisplayHitTestData(); | |
72 void AllocateDisplayHitTestData(int length); | |
73 | |
74 // Resize the memory for the DisplayHitTestData Structure. | |
varkha
2017/06/19 21:15:04
nit: Resizes.
gklassen
2017/06/20 16:09:39
Done.
| |
75 // Copies current data and marks the structure | |
varkha
2017/06/19 21:15:05
nit. Sentence ends in .
gklassen
2017/06/20 16:09:38
Done.
| |
76 void ResizeDisplayHitTestData(int length); | |
77 | |
78 int GetBackIndex(); | |
79 | |
80 int Append(cc::SurfaceId surface_id, int index); | |
81 int Append(const hit_test::mojom::HitTestRegionPtr& region, int index); | |
82 | |
83 // SurfaceObserver | |
varkha
2017/06/19 21:15:05
nit: cc::SurfaceObserver:
gklassen
2017/06/20 16:09:38
Done.
| |
84 void OnSurfaceCreated(const cc::SurfaceInfo& surface_info) override {} | |
85 void OnSurfaceDestroyed(const cc::SurfaceId& surface_id) override {} | |
86 bool OnSurfaceDamaged(const cc::SurfaceId& surface_id, | |
87 const cc::BeginFrameAck& ack) override; | |
88 void OnSurfaceDiscarded(const cc::SurfaceId& surface_id) override; | |
89 void OnSurfaceDamageExpected(const cc::SurfaceId& surface_id, | |
90 const cc::BeginFrameArgs& args) override {} | |
varkha
2017/06/19 21:15:05
nit: ws after this line.
gklassen
2017/06/20 16:09:39
Done.
| |
91 // Called when a surface has been aggregated and added to the | |
92 // display frame. HitTestData objects are held but ignored until | |
93 // this happens. HitTestData for the surface is copied from pending_ | |
94 // to active_ in this method. | |
varkha
2017/06/19 21:15:05
nit: pending_ and active_ refer to variables so wr
gklassen
2017/06/20 16:09:38
Done.
| |
95 void OnSurfaceWillDraw(const cc::SurfaceId& surface_id) override; | |
96 | |
97 // WeakPtr to handle the case when this object is deleted after | |
98 // the PostTaskAggregation call is scheduled but before invocation. | |
99 base::WeakPtrFactory<HitTestAggregator> weak_ptr_factory_; | |
100 | |
101 DISALLOW_COPY_AND_ASSIGN(HitTestAggregator); | |
102 }; | |
103 | |
104 } // namespace hit_test | |
105 } // namespace viz | |
106 | |
107 #endif // COMPONENTS_VIZ_SERVICE_HIT_TEST_HIT_TEST_AGGREGATOR_H_ | |
varkha
2017/06/19 21:15:04
nit: remove extra space after //
gklassen
2017/06/26 21:55:19
Done.
| |
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