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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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