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 #include "ui/events/ozone/evdev/libgestures_glue/gesture_timer_provider.h" 6 7 #include <gestures/gestures.h> 8 9 #include "base/timer/timer.h" 10 11 // libgestures requires that this be in the top level namespace. 12 class GesturesTimer { 13 public: 14 GesturesTimer() : callback_(NULL), callback_data_(NULL) {} 15 ~GesturesTimer() {} 16 17 void Set(stime_t delay, GesturesTimerCallback callback, void* callback_data) { 18 callback_ = callback; 19 callback_data_ = callback_data; 20 timer_.Start(FROM_HERE, 21 base::TimeDelta::FromMicroseconds( 22 delay * base::Time::kMicrosecondsPerSecond), 23 this, 24 &GesturesTimer::OnTimerExpired); 25 } 26 27 void Cancel() { timer_.Stop(); } 28 29 private: 30 void OnTimerExpired() { 31 struct timespec ts; 32 DCHECK(!clock_gettime(CLOCK_MONOTONIC, &ts)); 33 stime_t next_delay = callback_(StimeFromTimespec(&ts), callback_data_); 34 if (next_delay >= 0) { 35 timer_.Start(FROM_HERE, 36 base::TimeDelta::FromMicroseconds( 37 next_delay * base::Time::kMicrosecondsPerSecond), 38 this, 39 &GesturesTimer::OnTimerExpired); 40 } 41 } 42 43 GesturesTimerCallback callback_; 44 void* callback_data_; 45 base::OneShotTimer<GesturesTimer> timer_; 46 }; 47 48 namespace ui { 49 50 namespace { 51 52 GesturesTimer* GesturesTimerCreate(void* data) { return new GesturesTimer; } 53 54 void GesturesTimerSet(void* data, 55 GesturesTimer* timer, 56 stime_t delay, 57 GesturesTimerCallback callback, 58 void* callback_data) { 59 timer->Set(delay, callback, callback_data); 60 } 61 62 void GesturesTimerCancel(void* data, GesturesTimer* timer) { timer->Cancel(); } 63 64 void GesturesTimerFree(void* data, GesturesTimer* timer) { delete timer; } 65 66 } // namespace 67 68 const GesturesTimerProvider kGestureTimerProvider = { 69 GesturesTimerCreate, GesturesTimerSet, GesturesTimerCancel, 70 GesturesTimerFree}; 71 72 } // namespace ui 73
