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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_HIT_TEST_HIT_TEST_AGGREGATOR_H_ | |
6 #define COMPONENTS_VIZ_HIT_TEST_HIT_TEST_AGGREGATOR_H_ | |
7 | |
8 #include <stdint.h> | |
9 | |
10 #include <map> | |
11 #include <memory> | |
12 | |
13 #include "cc/surfaces/surface_id.h" | |
14 #include "cc/surfaces/surface_observer.h" | |
15 #include "components/viz/hit_test/display_hit_test_data.h" | |
16 #include "components/viz/hit_test/hit_test_export.h" | |
17 #include "components/viz/hit_test/public/interfaces/hit_test_data.mojom.h" | |
18 #include "ui/gfx/geometry/quad_f.h" | |
19 | |
20 namespace viz { | |
21 namespace hit_test { | |
22 | |
23 namespace test { | |
24 class HitTestAggregatorTest; | |
25 } | |
26 | |
27 // HitTest maintains maping between display regions and associated surfaces | |
28 // in shared memory to enable efficient hit testing across processes. | |
29 // | |
30 // This is intended to be created in the viz or GPU process. For mus+ash this | |
31 // will be true after the mus process split. | |
32 | |
33 using HitTestDataMap = std::map<cc::SurfaceId, hit_test::mojom::HitTestDataPtr>; | |
34 | |
35 class HIT_TEST_EXPORT HitTestAggregator : public cc::SurfaceObserver { | |
36 public: | |
37 HitTestAggregator(); | |
38 ~HitTestAggregator(); | |
39 | |
40 // Called when HitTestData is submitted along with every call | |
41 // to SubmitCompositorFrame. This is collected in pending_ until | |
42 // surfaces are aggregated and put on the display. | |
43 void SubmitHitTestData(hit_test::mojom::HitTestDataPtr hit_test_data); | |
44 | |
45 // Called when surfaces have been aggregated. Used to aggregate | |
46 // HitTestData into the tree structure in shared memory and used | |
47 // for event targetting. | |
48 void PostTaskAggregate(cc::SurfaceId display_surface_id); | |
49 void Aggregate(cc::SurfaceId display_surface_id); | |
50 | |
51 // Called at BeginFrame to swap buffers in shared memory. | |
52 void Swap(); | |
53 | |
54 // SurfaceObserver | |
55 void OnSurfaceCreated(const cc::SurfaceInfo& surface_info) override {} | |
56 void OnSurfaceDestroyed(const cc::SurfaceId& surface_id) override {} | |
57 void OnSurfaceDamaged(const cc::SurfaceId& surface_id, | |
58 const cc::BeginFrameAck& ack, | |
59 bool* changed) override {} | |
60 void OnSurfaceDiscarded(const cc::SurfaceId& surface_id) override; | |
61 void OnSurfaceDamageExpected(const cc::SurfaceId& surface_id, | |
62 const cc::BeginFrameArgs& args) override {} | |
63 // Called when a surface has been aggregated and added to the | |
64 // display frame. HitTestData objects are held but ignored until | |
65 // this happens. HitTestData for the surface is copied from pending_ | |
66 // to active_ in this method. | |
67 void OnSurfaceWillDraw(const cc::SurfaceId& surface_id) override; | |
68 | |
69 DisplayHitTestData* GetDisplayHitTestData(); | |
70 DisplayHitTestRegion* GetCurrentRegions(); | |
71 | |
72 private: | |
73 friend class viz::hit_test::test::HitTestAggregatorTest; | |
74 | |
75 HitTestDataMap pending_; | |
76 HitTestDataMap active_; | |
77 | |
78 DisplayHitTestData* display_hit_test_data_; | |
79 | |
80 // Allocates memory for the DisplayHitTestData Structure. | |
rjkroege
2017/06/12 18:13:01
we discussed having some kind of injected factory
gklassen
2017/06/13 18:54:23
No, I just wasn't quite done. The most recent pat
| |
81 void AllocateDisplayHitTestData(); | |
82 void AllocateDisplayHitTestData(int length); | |
83 | |
84 // Resize the memory for the DispalyHitTestData Structure. | |
85 // Copies current data and marks the structure | |
rjkroege
2017/06/12 18:13:01
I think that we need to talk about how the shared
gklassen
2017/06/13 18:54:23
Agreed. The implementation currently seems to hav
| |
86 void ResizeDisplayHitTestData(int length); | |
87 | |
88 int GetBackIndex(); | |
89 | |
90 int Append(cc::SurfaceId surface_id, int index); | |
91 int Append(const hit_test::mojom::HitTestRegionPtr& region, int index); | |
92 | |
93 // WeakPtr to handle the case when this object is deleted after | |
94 // the PostTaskAggregation call is scheduled but before invocation. | |
95 base::WeakPtrFactory<HitTestAggregator> weak_ptr_factory_; | |
96 | |
97 DISALLOW_COPY_AND_ASSIGN(HitTestAggregator); | |
98 }; | |
99 | |
100 } // namespace hit_test | |
101 } // namespace viz | |
102 | |
103 #endif // COMPONENTS_VIZ_HIT_TEST_HIT_TEST_AGGREGATOR_H_ | |
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