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comparison MetroWpf/MetroWpf.Xaml/Transitions/StoryboardTransition.cs @ 24:a8b50a087544

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Stocks and FxRates working, new menu introduced. Working nicely so far
author adminsh@apollo
date Tue, 20 Mar 2012 20:18:35 +0000
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23:399398841fd0 24:a8b50a087544
1 using System.Windows;
2 using System.Windows.Controls;
3 using System.Windows.Media.Animation;
4
5 namespace MetroWpf.Xaml.Transitions
6 {
7 // Transition with storyboards for the old and new content presenters
8 [StyleTypedProperty(Property = "OldContentStyle", StyleTargetType = typeof(ContentPresenter))]
9 [StyleTypedProperty(Property = "NewContentStyle", StyleTargetType = typeof(ContentPresenter))]
10 public class StoryboardTransition : Transition
11 {
12 public Style OldContentStyle
13 {
14 get { return (Style)GetValue(OldContentStyleProperty); }
15 set { SetValue(OldContentStyleProperty, value); }
16 }
17
18 public static readonly DependencyProperty OldContentStyleProperty =
19 DependencyProperty.Register("OldContentStyle",
20 typeof(Style),
21 typeof(StoryboardTransition),
22 new UIPropertyMetadata(null));
23
24 public Storyboard OldContentStoryboard
25 {
26 get { return (Storyboard)GetValue(OldContentStoryboardProperty); }
27 set { SetValue(OldContentStoryboardProperty, value); }
28 }
29
30 public static readonly DependencyProperty OldContentStoryboardProperty =
31 DependencyProperty.Register("OldContentStoryboard",
32 typeof(Storyboard),
33 typeof(StoryboardTransition),
34 new UIPropertyMetadata(null));
35
36 public Style NewContentStyle
37 {
38 get { return (Style)GetValue(NewContentStyleProperty); }
39 set { SetValue(NewContentStyleProperty, value); }
40 }
41
42 public static readonly DependencyProperty NewContentStyleProperty =
43 DependencyProperty.Register("NewContentStyle",
44 typeof(Style),
45 typeof(StoryboardTransition),
46 new UIPropertyMetadata(null));
47
48 public Storyboard NewContentStoryboard
49 {
50 get { return (Storyboard)GetValue(NewContentStoryboardProperty); }
51 set { SetValue(NewContentStoryboardProperty, value); }
52 }
53
54 public static readonly DependencyProperty NewContentStoryboardProperty =
55 DependencyProperty.Register("NewContentStoryboard",
56 typeof(Storyboard),
57 typeof(StoryboardTransition),
58 new UIPropertyMetadata(null));
59
60 protected internal override void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
61 {
62 Storyboard oldStoryboard = OldContentStoryboard;
63 Storyboard newStoryboard = NewContentStoryboard;
64
65 if (oldStoryboard != null || newStoryboard != null)
66 {
67 oldContent.Style = OldContentStyle;
68 newContent.Style = NewContentStyle;
69
70 // Flag to determine when both storyboards are done
71 bool done = oldStoryboard == null || newStoryboard == null;
72
73 if (oldStoryboard != null)
74 {
75 oldStoryboard = oldStoryboard.Clone();
76 oldContent.SetValue(OldContentStoryboardProperty, oldStoryboard);
77 oldStoryboard.Completed += delegate
78 {
79 if (done)
80 EndTransition(transitionElement, oldContent, newContent);
81 done = true;
82 };
83 oldStoryboard.Begin(oldContent, true);
84 }
85
86 if (newStoryboard != null)
87 {
88 newStoryboard = newStoryboard.Clone();
89 newContent.SetValue(NewContentStoryboardProperty, newStoryboard);
90 newStoryboard.Completed += delegate
91 {
92 if (done)
93 EndTransition(transitionElement, oldContent, newContent);
94 done = true;
95 };
96 newStoryboard.Begin(newContent, true);
97 }
98 }
99 else
100 {
101 EndTransition(transitionElement, oldContent, newContent);
102 }
103 }
104
105 protected override void OnTransitionEnded(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
106 {
107 Storyboard oldStoryboard = (Storyboard)oldContent.GetValue(OldContentStoryboardProperty);
108 if (oldStoryboard != null)
109 oldStoryboard.Stop(oldContent);
110 oldContent.ClearValue(ContentPresenter.StyleProperty);
111
112 Storyboard newStoryboard = (Storyboard)newContent.GetValue(NewContentStoryboardProperty);
113 if (newStoryboard != null)
114 newStoryboard.Stop(newContent);
115 newContent.ClearValue(ContentPresenter.StyleProperty);
116 }
117 }
118 }