protected override Size OnMeasure(Size size, IRendererContext context)
{
var panelSize = Margin.GetAbsoluteSize() + Padding.GetAbsoluteSize() + Border.AsSpacer().GetAbsoluteSize();
Inner?.Measure((size - panelSize).Union(Size.Empty), context);
return((Inner?.DesiredSize ?? Size.Empty) + panelSize);
}
protected override void OnArrange()
{
var(widthExpandable, heightExpandable) = WithExpandable(Margin, Border.AsSpacer(), Padding);
var widths = widthExpandable.AsEnumerable().GetEnumerator();
var heights = heightExpandable.AsEnumerable().GetEnumerator();
BorderLayout = Layout.ShrinkBy(GetRealSize(Margin, widths, heights));
PaddingLayout = BorderLayout.ShrinkBy(GetRealSize(Border.AsSpacer(), widths, heights));
ActualBorder = CalculateActualBorder(PaddingLayout, BorderLayout);
Inner?.Arrange(PaddingLayout.ShrinkBy(GetRealSize(Padding, widths, heights)));
ActualRadius = CalculateActualRadius();
}