/// <summary>
/// Scroll to a selected index (with animation or not)
/// </summary>
internal void ScrollToSelectedIndex(PickerSelectorItem selectedItem, TimeSpan duration)
{
if (!templateApplied)
return;
var centerTopOffset = Orientation == Orientation.Vertical
? (this.ActualHeight / 2d) - (itemHeight) / 2d
: (this.ActualWidth / 2d) - (itemWidth) / 2d;
var deltaOffset = centerTopOffset -
(Orientation == Orientation.Vertical
? selectedItem.GetVerticalPosition()
: selectedItem.GetHorizontalPosition());
if (Double.IsInfinity(deltaOffset) || Double.IsNaN(deltaOffset))
return;
if (duration == TimeSpan.Zero)
this.internalSlider.Value += deltaOffset;
else
this.UpdatePositionsWithAnimationAsync(selectedItem, deltaOffset, duration);
}
