/// <summary>
/// animate a dashed storke animation form the "from" dashed stroke to the "to" dashes stroke
/// </summary>
/// <param name="onValueCallback">the callback to set the changed dashed stroke</param>
/// <returns>a task contains the animation</returns>
public Task <bool> Start(Action <DashedStroke> onValueCallback)
{
_strokeDash = From;
var taskCompletionSource = new TaskCompletionSource <bool>();
var anim = new Animation(_ => onValueCallback(_strokeDash));
anim.Add(0, 1, new Animation(
callback: v => _strokeDash.Phase = (float)v,
start: From.Phase,
end: To.Phase,
easing: Easing));
anim.Add(0, 1, new Animation(
callback: v => _strokeDash.Intervals[0] = (float)v,
start: From.Intervals[0],
end: To.Intervals[0],
easing: Easing));
anim.Add(0, 1, new Animation(
callback: v => _strokeDash.Intervals[1] = (float)v,
start: From.Intervals[1],
end: To.Intervals[1],
easing: Easing));
anim.Commit(
owner: Application.Current.MainPage,
name: "highlightAnimation",
length: Duration,
easing: Easing,
finished: (v, c) => taskCompletionSource.SetResult(c));
return(taskCompletionSource.Task);
}
public DashedStroke(DashedStroke strokeDash)
: this(strokeDash.Intervals, strokeDash.Phase)
{
}
public DashedStrokeAnimation(DashedStroke from, DashedStroke to, uint duration)
{
From = from;
To = to;
Duration = duration;
}