public static string Begin(this Storyboard storyboard, StoryboardFinishedCallback finishedCallback = null)
{
var handle = storyboard.Id.ToString();
Begin(storyboard, handle, finishedCallback);
return(handle);
}
public static string Begin(this Storyboard storyboard, VisualElement animationRoot,
StoryboardFinishedCallback finishedCallback = null)
{
var handle = storyboard.Id.ToString();
Begin(storyboard, animationRoot, handle, finishedCallback);
return(handle);
}
public static void Begin(this Storyboard storyboard, string handle,
StoryboardFinishedCallback finishedCallback = null)
{
if (storyboard.Target == null)
{
throw new InvalidOperationException(
"Impossible to begin animations when animation stroryboard target null");
}
Begin(storyboard, storyboard.Target, finishedCallback);
}
public static void Begin(this Storyboard storyboard, VisualElement animationRoot, string handle,
StoryboardFinishedCallback finishedCallback = null)
{
if (animationRoot == null)
{
throw new ArgumentNullException(nameof(animationRoot));
}
if (string.IsNullOrWhiteSpace(handle))
{
throw new InvalidOperationException("Impossible to begin animations when handle is empty");
}
var duration = storyboard.Duration;
var animationLength = (uint)duration.ToTimeSpan().TotalMilliseconds;
var animation = storyboard.ToAnimation(storyboard.Target ?? animationRoot);
animationRoot.Animate(handle, animation, length: animationLength,
finished: (x, cancelled) => finishedCallback?.Invoke(animation, x, cancelled));
}