/// <summary>
/// Handles the application of a new Template.
/// </summary>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
PanningTransform = GetTemplateChild(PanningTransformName) as TranslateTransform;
_animator = PanningTransform != null ? new TransformAnimator(PanningTransform) : null;
}
public static void EnsureAnimator(FrameworkElement targetElement, ref TransformAnimator animator)
{
if (animator == null)
{
TranslateTransform transform = TransformAnimator.GetTranslateTransform(targetElement);
if (transform != null)
{
animator = new TransformAnimator(transform);
}
}
if (animator == null)
{
throw new InvalidOperationException("The animation system could not be prepared for the target element.");
}
}