protected override void UpdateSkinDisplayList()
{
if (null == Thumb || null == Track)
{
return;
}
var thumbRange = LayoutUtil.GetLayoutBoundsHeight(Track) - LayoutUtil.GetLayoutBoundsHeight(Thumb);
var range = Maximum - Minimum;
// calculate new thumb position.
var thumbPosTrackY = (range > 0) ? thumbRange - ((PendingValue - Minimum) / range) * thumbRange : 0;
// convert to parent's coordinates.
var thumbPos = Track.LocalToGlobal(new Point(0, thumbPosTrackY));
var thumbPosParentY = Thumb.Parent.GlobalToLocal(thumbPos).Y;
Thumb.SetLayoutBoundsPosition(LayoutUtil.GetLayoutBoundsX(Thumb), Mathf.Round(thumbPosParentY));
}
//---------------------------------
// Utility methods for subclasses
//---------------------------------
/**
*
*
* Utility method to calculate a skin part's position relative to our component.
*
* Param: part The skin part instance to obtain coordinates of.
*
* Returns: The component relative position of the part.
*/
/// <summary>
///
/// </summary>
/// <param name="part"></param>
/// <returns></returns>
protected Point GetSkinPartPosition(IVisualElement part)
{
return((null == part || null == part.Parent) ? new Point(0, 0) :
GlobalToLocal(part.Parent.LocalToGlobal(new Point(LayoutUtil.GetLayoutBoundsX((InvalidationManagerClient)part), LayoutUtil.GetLayoutBoundsY((InvalidationManagerClient)part)))));
}
