private void AssociatedObject_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
if (PreviewBehavior._isShowingPreview)
{
Point point = new Point(e.ManipulationOrigin.X, e.ManipulationOrigin.Y);
UIElement rootVisual = Application.Current.RootVisual;
FrameworkElement newHoveredElement = VisualTreeHelper.FindElementsInHostCoordinates(PreviewBehavior.GetHostCoordinates(e.ManipulationContainer.TransformToVisual(rootVisual).Transform(point)), rootVisual).FirstOrDefault <UIElement>() as FrameworkElement;
if (newHoveredElement != null)
{
BehaviorCollection behaviors1 = Interaction.GetBehaviors((DependencyObject)newHoveredElement);
PreviewBehavior previewBehavior = (behaviors1 != null ? behaviors1.FirstOrDefault <Behavior>((Func <Behavior, bool>)(b => b is PreviewBehavior)) : (Behavior)null) as PreviewBehavior;
if (previewBehavior == null && newHoveredElement.Parent != null)
{
BehaviorCollection behaviors2 = Interaction.GetBehaviors(newHoveredElement.Parent);
previewBehavior = (behaviors2 != null ? behaviors2.FirstOrDefault <Behavior>((Func <Behavior, bool>)(b => b is PreviewBehavior)) : (Behavior)null) as PreviewBehavior;
}
if (previewBehavior != null)
{
Image image = newHoveredElement as Image;
BitmapImage originalImage = (image != null ? image.Source : null) as BitmapImage;
this.ShowPreview(previewBehavior.PreviewUri, originalImage, previewBehavior.TopOffset);
this.SetHoveredElement(newHoveredElement);
}
}
e.Handled = true;
}
else
{
this.StopTimer();
}
}
private void SetHoveredElement(FrameworkElement newHoveredElement)
{
if (this._hoveredElement == newHoveredElement)
{
return;
}
List <AnimationInfo> animInfoList = new List <AnimationInfo>();
if (this._hoveredElement != null)
{
animInfoList.AddRange((IEnumerable <AnimationInfo>)PreviewBehavior.CreateAnimations(this._hoveredElement, false));
}
this._hoveredElement = newHoveredElement;
if (this._hoveredElement != null)
{
animInfoList.AddRange((IEnumerable <AnimationInfo>)PreviewBehavior.CreateAnimations(this._hoveredElement, true));
}
AnimationUtil.AnimateSeveral(animInfoList, new int?(0), null);
}
