markus / KCOM / Common / ExpandingMouseOver.cs @ 16a422d1
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Text; |
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using System.Windows; |
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using System.Windows.Input; |
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using System.Windows.Interactivity; |
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using System.Windows.Media; |
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using System.Windows.Media.Animation; |
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namespace KCOM.Common |
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{ |
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public class ExpandingMouseOver : Behavior<UIElement> |
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{ |
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private Storyboard _storyboard; |
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private DoubleAnimation _daScaleX, _daScaleY; |
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private ScaleTransform _scScale; |
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public static readonly DependencyProperty ScaleFactorProperty = DependencyProperty.Register("ScaleFactor", typeof(double), typeof(ExpandingMouseOver), new PropertyMetadata(1.5)); |
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public double ScaleFactor |
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{ |
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get |
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{ |
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return (double)GetValue(ScaleFactorProperty); |
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} |
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set |
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{ |
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SetValue(ScaleFactorProperty, value); |
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} |
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} |
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protected override void OnAttached() |
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{ |
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base.OnAttached(); |
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AssociatedObject.MouseEnter += new MouseEventHandler(OnMouseEnter); |
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AssociatedObject.MouseLeave += new MouseEventHandler(OnMouseLeave); |
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AssociatedObject.MouseLeftButtonDown += new MouseButtonEventHandler(OnLeftButtonDown); |
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_scScale = new ScaleTransform(); |
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AssociatedObject.RenderTransformOrigin = new Point(0.5, 0.5); |
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if (AssociatedObject.RenderTransform == null) |
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{ |
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AssociatedObject.RenderTransform = _scScale; |
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} |
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else |
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{ |
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if (AssociatedObject.RenderTransform is TransformGroup) |
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{ |
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((TransformGroup)AssociatedObject.RenderTransform).Children.Add(_scScale); |
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} |
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else |
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{ |
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TransformGroup group = new TransformGroup(); |
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group.Children.Add(AssociatedObject.RenderTransform); |
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group.Children.Add(_scScale); |
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AssociatedObject.RenderTransform = group; |
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} |
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} |
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_daScaleX = new DoubleAnimation(); |
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_daScaleY = new DoubleAnimation(); |
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_daScaleX.Duration = _daScaleY.Duration = new Duration(new TimeSpan(0, 0, 0, 0, 150)); |
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Storyboard.SetTarget(_daScaleX, _scScale); |
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Storyboard.SetTarget(_daScaleY, _scScale); |
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Storyboard.SetTargetProperty(_daScaleX, new PropertyPath("ScaleX")); |
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Storyboard.SetTargetProperty(_daScaleY, new PropertyPath("ScaleY")); |
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_storyboard = new Storyboard(); |
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_storyboard.Children.Add(_daScaleX); |
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_storyboard.Children.Add(_daScaleY); |
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} |
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protected override void OnDetaching() |
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{ |
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base.OnDetaching(); |
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AssociatedObject.MouseEnter -= new MouseEventHandler(OnMouseEnter); |
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AssociatedObject.MouseLeave -= new MouseEventHandler(OnMouseLeave); |
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AssociatedObject.MouseLeftButtonDown -= new MouseButtonEventHandler(OnLeftButtonDown); |
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} |
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void OnMouseEnter(object sender, MouseEventArgs e) |
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{ |
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_daScaleX.To = _daScaleY.To = ScaleFactor; |
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_storyboard.Begin(); |
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} |
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void OnMouseLeave(object sender, MouseEventArgs e) |
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{ |
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_daScaleX.To = _daScaleY.To = 1.0; |
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_storyboard.Begin(); |
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} |
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void OnLeftButtonDown(object sender, MouseButtonEventArgs e) |
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{ |
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_daScaleX.To = _daScaleY.To = 1.0; |
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_storyboard.Begin(); |
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} |
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} |
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} |