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annotate Implab.Fx/AnimationHelpers.cs @ 72:d67b95eddaf4 v2

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promises refactoring
author cin
date Thu, 04 Sep 2014 18:47:12 +0400
parents 2fad2d1f4b03
children d4e38929ce36
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1 using System;
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2 using System.Collections.Generic;
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3 using System.Linq;
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4 using System.Text;
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5 using System.Windows.Forms;
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6 using System.Diagnostics;
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7
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8 namespace Implab.Fx
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9 {
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10 public static class AnimationHelpers
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11 {
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12 public static Animation<TTarget> AnimateProperty<TTarget, TVal>(this Animation<TTarget> animation, Action<TTarget, TVal> setter, Func<TTarget, TVal> getter, TVal newValue, Func<TVal, TVal, int, int, TVal> fx) where TTarget : class
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13 {
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14 if (animation == null)
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15 throw new ArgumentNullException("animation");
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16
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17 TVal oldValue = getter(animation.Traget);
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18
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19 animation.Step += (target, elaped, duration) =>
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20 {
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21 var value = fx(oldValue, newValue, elaped, duration);
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22 setter(target, value);
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23 };
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24
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25 return animation;
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26 }
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27
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28 public static Animation<T> AnimateTransparency<T>(this T ctl, float newValue) where T : Form
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29 {
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30 var anim = new Animation<T>(ctl);
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31
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32 anim.AnimateProperty(
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33 (target, value) => target.Opacity = value,
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34 target => target.Opacity,
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35 newValue,
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36 (ov, nv, el, du) => ov + ((float)el / du) * (nv - ov)
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37 );
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38 return anim;
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39 }
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40
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41 public static IPromise<T> CloseFadeOut<T>(this T ctl) where T : Form
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42 {
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43 var anim = ctl.AnimateTransparency(0);
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44
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45 return anim.Play().DispatchToControl(ctl).Then(frm => frm.Close());
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46 }
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47
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48 public static IPromise<T> OverlayFadeIn<T>(this Form that, T overlay) where T : Form
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49 {
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50 if (that == null)
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51 throw new ArgumentNullException("that");
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52 if (overlay == null)
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53 throw new ArgumentNullException("overlay");
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54
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55 // setup overlay
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56 overlay.Opacity = 0;
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57 overlay.FormBorderStyle = FormBorderStyle.None;
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58 overlay.ShowInTaskbar = false;
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59
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60 that.AddOwnedForm(overlay);
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61
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62 EventHandler handler = (object sender, EventArgs args) =>
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63 {
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64 overlay.Bounds = that.RectangleToScreen(that.ClientRectangle);
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65 };
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66
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67 // attach handlers
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68 that.Move += handler;
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69 that.Resize += handler;
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70 that.Shown += handler;
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71
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72 // remove handlers to release overlay
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73 overlay.FormClosed += (sender, args) =>
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74 {
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75 that.Move -= handler;
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76 that.Resize -= handler;
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77 that.Shown -= handler;
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78 };
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79
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80 overlay.Show(that);
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81 overlay.Bounds = that.RectangleToScreen(that.ClientRectangle);
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82
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83 return overlay
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84 .AnimateTransparency(1)
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85 .Play()
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86 .DispatchToControl(overlay);
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87 }
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88 }
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89 }