protected override Vector2 MeasureOverride(Vector2 availableSize)
{
Thickness borderThicknessAndPadding = this.BorderThickness + this.Padding;
UIElement child = this.Content;
if (child != null)
{
child.Measure(availableSize.Deflate(borderThicknessAndPadding));
return(child.DesiredSize.Inflate(borderThicknessAndPadding));
}
return(borderThicknessAndPadding.Collapse());
}