Mercurial > pub > ImplabNet
annotate Implab.Fx/Animation.cs @ 196:40d7fed4a09e
fixed promise chaining behavior, the error handler doesn't handle result or cancellation handlers exceptions these exceptions are propagated to the next handlers.
| author | cin |
|---|---|
| date | Mon, 29 Aug 2016 23:15:51 +0300 |
| parents | dfa21d507bc5 |
| children |
| rev | line source |
|---|---|
| 3 | 1 using System; |
| 2 using System.Collections.Generic; | |
| 3 using System.Linq; | |
| 4 using System.Text; | |
| 4 | 5 using System.Timers; |
| 6 using System.ComponentModel; | |
| 7 using System.Diagnostics; | |
| 3 | 8 |
| 9 namespace Implab.Fx | |
| 10 { | |
| 4 | 11 public delegate void AnimationStep<T>(T target, int elapsed, int duration); |
| 12 | |
| 13 public class Animation<TArg> where TArg: class | |
| 3 | 14 { |
| 15 int m_duration; | |
| 4 | 16 int m_delay; |
| 17 int m_elapsed; | |
| 18 int m_prevTicks; | |
| 19 TArg m_arg; | |
| 20 ISynchronizeInvoke m_syncronizationObject; | |
| 21 | |
| 22 public event AnimationStep<TArg> Step; | |
| 23 | |
| 24 Promise<TArg> m_promise; | |
| 25 | |
| 26 public Animation(TArg target, int duration, int delay) | |
| 27 { | |
| 28 if (duration <= 0) | |
| 29 throw new ArgumentOutOfRangeException("duration"); | |
| 30 if (delay <= 0) | |
| 31 throw new ArgumentOutOfRangeException("delay"); | |
| 32 | |
| 33 m_arg = target; | |
| 34 m_syncronizationObject = target as ISynchronizeInvoke; | |
| 35 m_duration = duration; | |
| 36 m_delay = delay; | |
| 37 m_promise = new Promise<TArg>(); | |
| 38 } | |
| 39 | |
| 40 public Animation(TArg target) | |
| 41 : this(target, 500, 30) | |
| 42 { | |
| 43 } | |
| 44 | |
| 45 public TArg Traget | |
| 46 { | |
| 47 get { return m_arg; } | |
| 48 } | |
| 3 | 49 |
| 4 | 50 public Promise<TArg> Play() |
| 51 { | |
| 52 var timer = new Timer(m_delay); | |
| 53 | |
|
6
dfa21d507bc5
*refactoring: Promise.Then now returns a new chained promise
cin
parents:
4
diff
changeset
|
54 timer.AutoReset = false; |
| 4 | 55 timer.SynchronizingObject = m_syncronizationObject; |
| 56 timer.Elapsed += new ElapsedEventHandler(timer_Elapsed); | |
| 3 | 57 |
| 4 | 58 m_prevTicks = Environment.TickCount; |
| 59 | |
| 60 timer.Start(); | |
| 61 | |
| 62 return m_promise; | |
| 63 } | |
| 64 | |
| 65 void timer_Elapsed(object sender, ElapsedEventArgs args) | |
| 66 { | |
| 67 var timer = sender as Timer; | |
| 68 | |
| 69 var dt = Environment.TickCount - m_prevTicks; | |
| 70 m_prevTicks = Environment.TickCount; | |
| 71 | |
| 72 m_elapsed += dt; | |
| 73 | |
| 74 if (m_elapsed > m_duration) | |
| 75 m_elapsed = m_duration; | |
| 76 | |
| 77 try | |
| 78 { | |
| 79 var handler = Step; | |
| 80 if (handler != null) | |
| 81 handler(m_arg, m_elapsed, m_duration); | |
| 82 } | |
| 83 catch (Exception e) | |
| 84 { | |
| 85 Trace.TraceError(e.ToString()); | |
| 86 } | |
| 87 | |
| 88 if (m_elapsed < m_duration) | |
| 89 timer.Start(); | |
| 90 else | |
| 91 { | |
| 92 timer.Dispose(); | |
| 93 m_promise.Resolve(m_arg); | |
| 94 } | |
| 95 } | |
| 3 | 96 } |
| 97 } |