/// <inheritdoc/>
protected override Size2D ArrangeOverride(Size2D finalSize, ArrangeOptions options)
{
foreach (var child in Children)
{
var left = GetLeft(child);
var top = GetTop(child);
var right = GetRight(child);
var bottom = GetBottom(child);
if (Double.IsNaN(left) && Double.IsNaN(right))
{
left = 0;
}
if (Double.IsNaN(top) && Double.IsNaN(bottom))
{
top = 0;
}
var validLeft = LayoutUtil.GetValidMeasure(left, 0);
var validTop = LayoutUtil.GetValidMeasure(top, 0);
var validRight = LayoutUtil.GetValidMeasure(right, 0);
var validBottom = LayoutUtil.GetValidMeasure(bottom, 0);
var childWidth = Math.Min(child.DesiredSize.Width, finalSize.Width - (validLeft + validRight));
var childHeight = Math.Min(child.DesiredSize.Height, finalSize.Height - (validTop + validBottom));
if (!Double.IsNaN(left) && !Double.IsNaN(right))
{
childWidth = Math.Max(0, finalSize.Width - (left + right));
}
if (!Double.IsNaN(top) && !Double.IsNaN(bottom))
{
childHeight = Math.Max(0, finalSize.Height - (top + bottom));
}
var childX = 0.0;
var childY = 0.0;
if (!Double.IsNaN(left))
{
childX = left;
}
if (!Double.IsNaN(top))
{
childY = top;
}
if (!Double.IsNaN(right))
{
childX = finalSize.Width - (right + childWidth);
}
if (!Double.IsNaN(bottom))
{
childY = finalSize.Height - (bottom + childHeight);
}
child.Arrange(new RectangleD(childX, childY, childWidth, childHeight));
}
return(finalSize);
}
