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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/browser/renderer_host/input/tap_suppression_controller.h" | 5 #include "content/browser/renderer_host/input/tap_suppression_controller.h" |
6 | 6 |
7 #include "base/debug/trace_event.h" | 7 #include "base/debug/trace_event.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "content/browser/renderer_host/input/tap_suppression_controller_client.
h" | 9 #include "content/browser/renderer_host/input/tap_suppression_controller_client.
h" |
10 | 10 |
11 namespace content { | 11 namespace content { |
12 | 12 |
13 TapSuppressionController::Config::Config() | |
14 : enabled(false), | |
15 max_cancel_to_down_time(base::TimeDelta::FromMilliseconds(180)), | |
16 max_tap_gap_time(base::TimeDelta::FromMilliseconds(500)) {} | |
17 | |
18 TapSuppressionController::TapSuppressionController( | 13 TapSuppressionController::TapSuppressionController( |
19 TapSuppressionControllerClient* client, | 14 TapSuppressionControllerClient* client) |
20 const Config& config) | |
21 : client_(client), | 15 : client_(client), |
22 state_(config.enabled ? NOTHING : DISABLED), | 16 state_(TapSuppressionController::NOTHING) { |
23 max_cancel_to_down_time_(config.max_cancel_to_down_time), | 17 } |
24 max_tap_gap_time_(config.max_tap_gap_time) {} | |
25 | 18 |
26 TapSuppressionController::~TapSuppressionController() {} | 19 TapSuppressionController::~TapSuppressionController() {} |
27 | 20 |
28 void TapSuppressionController::GestureFlingCancel() { | 21 void TapSuppressionController::GestureFlingCancel() { |
29 switch (state_) { | 22 switch (state_) { |
30 case DISABLED: | |
31 break; | |
32 case NOTHING: | 23 case NOTHING: |
33 case GFC_IN_PROGRESS: | 24 case GFC_IN_PROGRESS: |
34 case LAST_CANCEL_STOPPED_FLING: | 25 case LAST_CANCEL_STOPPED_FLING: |
35 state_ = GFC_IN_PROGRESS; | 26 state_ = GFC_IN_PROGRESS; |
36 break; | 27 break; |
37 case TAP_DOWN_STASHED: | 28 case TAP_DOWN_STASHED: |
38 break; | 29 break; |
39 } | 30 } |
40 } | 31 } |
41 | 32 |
42 void TapSuppressionController::GestureFlingCancelAck(bool processed) { | 33 void TapSuppressionController::GestureFlingCancelAck(bool processed) { |
43 base::TimeTicks event_time = Now(); | 34 base::TimeTicks event_time = Now(); |
44 switch (state_) { | 35 switch (state_) { |
45 case DISABLED: | |
46 case NOTHING: | 36 case NOTHING: |
47 break; | 37 break; |
48 case GFC_IN_PROGRESS: | 38 case GFC_IN_PROGRESS: |
49 if (processed) | 39 if (processed) |
50 fling_cancel_time_ = event_time; | 40 fling_cancel_time_ = event_time; |
51 state_ = LAST_CANCEL_STOPPED_FLING; | 41 state_ = LAST_CANCEL_STOPPED_FLING; |
52 break; | 42 break; |
53 case TAP_DOWN_STASHED: | 43 case TAP_DOWN_STASHED: |
54 if (!processed) { | 44 if (!processed) { |
55 TRACE_EVENT0("browser", | 45 TRACE_EVENT0("browser", |
56 "TapSuppressionController::GestureFlingCancelAck"); | 46 "TapSuppressionController::GestureFlingCancelAck"); |
57 StopTapDownTimer(); | 47 StopTapDownTimer(); |
58 client_->ForwardStashedTapDown(); | 48 client_->ForwardStashedTapDown(); |
59 state_ = NOTHING; | 49 state_ = NOTHING; |
60 } // Else waiting for the timer to release the stashed tap down. | 50 } // Else waiting for the timer to release the stashed tap down. |
61 break; | 51 break; |
62 case LAST_CANCEL_STOPPED_FLING: | 52 case LAST_CANCEL_STOPPED_FLING: |
63 break; | 53 break; |
64 } | 54 } |
65 } | 55 } |
66 | 56 |
67 bool TapSuppressionController::ShouldDeferTapDown() { | 57 bool TapSuppressionController::ShouldDeferTapDown() { |
68 base::TimeTicks event_time = Now(); | 58 base::TimeTicks event_time = Now(); |
69 switch (state_) { | 59 switch (state_) { |
70 case DISABLED: | |
71 case NOTHING: | 60 case NOTHING: |
72 return false; | 61 return false; |
73 case GFC_IN_PROGRESS: | 62 case GFC_IN_PROGRESS: |
74 state_ = TAP_DOWN_STASHED; | 63 state_ = TAP_DOWN_STASHED; |
75 StartTapDownTimer(max_tap_gap_time_); | 64 StartTapDownTimer( |
| 65 base::TimeDelta::FromMilliseconds(client_->MaxTapGapTimeInMs())); |
76 return true; | 66 return true; |
77 case TAP_DOWN_STASHED: | 67 case TAP_DOWN_STASHED: |
78 NOTREACHED() << "TapDown on TAP_DOWN_STASHED state"; | 68 NOTREACHED() << "TapDown on TAP_DOWN_STASHED state"; |
79 state_ = NOTHING; | 69 state_ = NOTHING; |
80 return false; | 70 return false; |
81 case LAST_CANCEL_STOPPED_FLING: | 71 case LAST_CANCEL_STOPPED_FLING: |
82 if ((event_time - fling_cancel_time_) < max_cancel_to_down_time_) { | 72 if ((event_time - fling_cancel_time_).InMilliseconds() |
| 73 < client_->MaxCancelToDownTimeInMs()) { |
83 state_ = TAP_DOWN_STASHED; | 74 state_ = TAP_DOWN_STASHED; |
84 StartTapDownTimer(max_tap_gap_time_); | 75 StartTapDownTimer( |
| 76 base::TimeDelta::FromMilliseconds(client_->MaxTapGapTimeInMs())); |
85 return true; | 77 return true; |
86 } else { | 78 } else { |
87 state_ = NOTHING; | 79 state_ = NOTHING; |
88 return false; | 80 return false; |
89 } | 81 } |
90 } | 82 } |
91 NOTREACHED() << "Invalid state"; | 83 NOTREACHED() << "Invalid state"; |
92 return false; | 84 return false; |
93 } | 85 } |
94 | 86 |
95 bool TapSuppressionController::ShouldSuppressTapEnd() { | 87 bool TapSuppressionController::ShouldSuppressTapEnd() { |
96 switch (state_) { | 88 switch (state_) { |
97 case DISABLED: | |
98 case NOTHING: | 89 case NOTHING: |
99 case GFC_IN_PROGRESS: | 90 case GFC_IN_PROGRESS: |
100 return false; | 91 return false; |
101 case TAP_DOWN_STASHED: | 92 case TAP_DOWN_STASHED: |
102 state_ = NOTHING; | 93 state_ = NOTHING; |
103 StopTapDownTimer(); | 94 StopTapDownTimer(); |
104 client_->DropStashedTapDown(); | 95 client_->DropStashedTapDown(); |
105 return true; | 96 return true; |
106 case LAST_CANCEL_STOPPED_FLING: | 97 case LAST_CANCEL_STOPPED_FLING: |
107 NOTREACHED() << "Invalid tap end on LAST_CANCEL_STOPPED_FLING state"; | 98 NOTREACHED() << "Invalid tap end on LAST_CANCEL_STOPPED_FLING state"; |
108 } | 99 } |
109 return false; | 100 return false; |
110 } | 101 } |
111 | 102 |
112 base::TimeTicks TapSuppressionController::Now() { | 103 base::TimeTicks TapSuppressionController::Now() { |
113 return base::TimeTicks::Now(); | 104 return base::TimeTicks::Now(); |
114 } | 105 } |
115 | 106 |
116 void TapSuppressionController::StartTapDownTimer(const base::TimeDelta& delay) { | 107 void TapSuppressionController::StartTapDownTimer(const base::TimeDelta& delay) { |
117 tap_down_timer_.Start(FROM_HERE, delay, this, | 108 tap_down_timer_.Start(FROM_HERE, delay, this, |
118 &TapSuppressionController::TapDownTimerExpired); | 109 &TapSuppressionController::TapDownTimerExpired); |
119 } | 110 } |
120 | 111 |
121 void TapSuppressionController::StopTapDownTimer() { | 112 void TapSuppressionController::StopTapDownTimer() { |
122 tap_down_timer_.Stop(); | 113 tap_down_timer_.Stop(); |
123 } | 114 } |
124 | 115 |
125 void TapSuppressionController::TapDownTimerExpired() { | 116 void TapSuppressionController::TapDownTimerExpired() { |
126 switch (state_) { | 117 switch (state_) { |
127 case DISABLED: | |
128 case NOTHING: | 118 case NOTHING: |
129 NOTREACHED() << "Timer fired on invalid state."; | |
130 break; | |
131 case GFC_IN_PROGRESS: | 119 case GFC_IN_PROGRESS: |
132 case LAST_CANCEL_STOPPED_FLING: | 120 case LAST_CANCEL_STOPPED_FLING: |
133 NOTREACHED() << "Timer fired on invalid state."; | 121 NOTREACHED() << "Timer fired on invalid state."; |
134 state_ = NOTHING; | 122 state_ = NOTHING; |
135 break; | 123 break; |
136 case TAP_DOWN_STASHED: | 124 case TAP_DOWN_STASHED: |
137 TRACE_EVENT0("browser", | 125 TRACE_EVENT0("browser", |
138 "TapSuppressionController::TapDownTimerExpired"); | 126 "TapSuppressionController::TapDownTimerExpired"); |
139 client_->ForwardStashedTapDown(); | 127 client_->ForwardStashedTapDown(); |
140 state_ = NOTHING; | 128 state_ = NOTHING; |
141 break; | 129 break; |
142 } | 130 } |
143 } | 131 } |
144 | 132 |
145 } // namespace content | 133 } // namespace content |
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