/// <summary>
/// Position child elements according to already provided size.
/// </summary>
/// <param name="finalSize">Size that layout should use to arrange child elements.</param>
/// <returns>Size used by the panel.</returns>
protected override Size ArrangeOverride(Size finalSize)
{
// Implement any ClipToBounds property setting
ImplementClipToBounds(finalSize);
// Grab the collection of appropriate elements
ICollection elements = MetaChildren;
// Ask the panel layout to calculate the target display rectangles for elements
Layouts.TargetChildren(LayoutId, this, _stateDict, elements, finalSize);
// Ask the chain of animation handlers to update animation state and elements
bool needAnimating = AnimateChildren(_stateDict, elements);
// Faster perf to only set the IsAnimating when we notice a change
if (needAnimating != IsAnimating)
{
IsAnimating = needAnimating;
}
// Finally ask the panel layout to arrange elements in animation determined positions
return(Layouts.ArrangeChildren(LayoutId, this, _stateDict, elements, finalSize));
}