blob: 655492e5754bb7db015c74f56b953741aad2e4ff [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/events/ozone/evdev/libgestures_glue/gesture_timer_provider.h"
#include <gestures/gestures.h>
#include "base/timer/timer.h"
// libgestures requires that this be in the top level namespace.
struct GesturesTimer {
public:
GesturesTimer() {}
~GesturesTimer() {}
void Set(stime_t delay, GesturesTimerCallback callback, void* callback_data) {
callback_ = callback;
callback_data_ = callback_data;
timer_.Start(FROM_HERE,
base::TimeDelta::FromMicroseconds(
delay * base::Time::kMicrosecondsPerSecond),
this,
&GesturesTimer::OnTimerExpired);
}
void Cancel() { timer_.Stop(); }
private:
void OnTimerExpired() {
// Run the callback and reschedule the next run if requested.
stime_t next_delay = callback_(ui::StimeNow(), callback_data_);
if (next_delay >= 0) {
timer_.Start(FROM_HERE,
base::TimeDelta::FromMicroseconds(
next_delay * base::Time::kMicrosecondsPerSecond),
this,
&GesturesTimer::OnTimerExpired);
}
}
GesturesTimerCallback callback_ = nullptr;
void* callback_data_ = nullptr;
base::OneShotTimer timer_;
};
namespace ui {
namespace {
GesturesTimer* GesturesTimerCreate(void* data) { return new GesturesTimer; }
void GesturesTimerSet(void* data,
GesturesTimer* timer,
stime_t delay,
GesturesTimerCallback callback,
void* callback_data) {
timer->Set(delay, callback, callback_data);
}
void GesturesTimerCancel(void* data, GesturesTimer* timer) { timer->Cancel(); }
void GesturesTimerFree(void* data, GesturesTimer* timer) { delete timer; }
} // namespace
stime_t StimeNow() {
struct timespec ts;
if (clock_gettime(CLOCK_MONOTONIC, &ts))
PLOG(FATAL) << "clock_gettime";
return StimeFromTimespec(&ts);
}
const GesturesTimerProvider kGestureTimerProvider = {
GesturesTimerCreate, GesturesTimerSet, GesturesTimerCancel,
GesturesTimerFree};
} // namespace ui