public override Size GetPreferredSize(SizeConstraint widthConstraint, SizeConstraint heightConstraint)
{
var s = EventSink.GetDefaultNaturalSize();
if (child == null)
{
return(s);
}
if (widthConstraint.IsConstrained)
{
s.Width = widthConstraint.AvailableSize;
}
if (heightConstraint.IsConstrained)
{
s.Height = heightConstraint.AvailableSize;
}
var childWidthConstraint = horizontalScrollPolicy == ScrollPolicy.Never ? widthConstraint : SizeConstraint.Unconstrained;
var childHeightConstraint = verticalScrollPolicy == ScrollPolicy.Never ? heightConstraint : SizeConstraint.Unconstrained;
var schild = ((ViewBackend)child).Frontend.Surface.GetPreferredSize(childWidthConstraint, childHeightConstraint, true);
if (horizontalScrollPolicy == ScrollPolicy.Never)
{
s.Width = Math.Max(s.Width, schild.Width);
}
if (verticalScrollPolicy == ScrollPolicy.Never)
{
s.Height = Math.Max(s.Height, schild.Height);
}
return(s);
}
protected override Size GetNaturalSize()
{
return(EventSink.GetDefaultNaturalSize());
}
protected override Size GetNaturalSize()
{
var s = base.GetNaturalSize();
return(new Size(EventSink.GetDefaultNaturalSize().Width, s.Height));
}
