initial commit

xcd

2020-06-24 d6c577e17ee7bb5331dd51d803f9b42441b0f0e5

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
using System;
using System.Windows.Threading;
 
namespace Bro.Common.ImageCanvas
{
    public class KeepAliveTimer
    {
        private readonly DispatcherTimer _timer;
        private DateTime _startTime;
        private TimeSpan? _runTime;
 
        public TimeSpan Time { get; set; }
        public Action Action { get; set; }
        public bool Running { get; private set; }
 
        public KeepAliveTimer(TimeSpan time, Action action)
        {
            Time = time;
            Action = action;
            _timer = new DispatcherTimer(DispatcherPriority.ApplicationIdle) { Interval = time };
            _timer.Tick += TimerExpired;
        }
 
        private void TimerExpired(object sender, EventArgs e)
        {
            lock (_timer)
            {
                Running = false;
                _timer.Stop();
                _runTime = DateTime.UtcNow.Subtract(_startTime);
                Action();
            }
        }
 
        public void Nudge()
        {
            lock (_timer)
            {
                if (!Running)
                {
                    _startTime = DateTime.UtcNow;
                    _runTime = null;
                    _timer.Start();
                    Running = true;
                }
                else
                {
                    //Reset the timer
                    _timer.Stop();
                    _timer.Start();
                }
            }
        }
 
        public TimeSpan GetTimeSpan()
        {
            return _runTime ?? DateTime.UtcNow.Subtract(_startTime);
        }
    }
}