protected override void OnReallocate()
{
base.OnReallocate();
int margin = BorderVisible ? 1 : 0;
var vwidth = vScrollBar.Visible ? vScrollBar.WidthRequest : 0D;
var hheight = hScrollBar.Visible ? hScrollBar.HeightRequest : 0D;
var childRectangle = new Xwt.Rectangle(Bounds.X + margin, Bounds.Y + margin, Bounds.Width - vwidth - margin * 2, Bounds.Height - hheight - margin * 2);
if (vScrollBar.Visible)
{
double vChildTopHeight = -1;
foreach (var child in positions)
{
if (child.Value == ChildPosition.Top)
{
SetChildBounds(child.Key, new Rectangle(childRectangle.RightInside(), childRectangle.Y + vChildTopHeight, Bounds.Width - vwidth, child.Key.HeightRequest));
vChildTopHeight += child.Key.HeightRequest;
}
}
var v = vScrollBar is Scrollbar && hScrollBar.Visible ? hScrollBar.HeightRequest : 0;
SetChildBounds(vScrollBar, new Rectangle(childRectangle.X + childRectangle.Width + margin, childRectangle.Y + vChildTopHeight, vwidth, Bounds.Height - v - vChildTopHeight - margin));
Vadjustment.Value = System.Math.Max(System.Math.Min(Vadjustment.UpperValue - Vadjustment.PageSize, Vadjustment.Value), Vadjustment.LowerValue);
}
if (hScrollBar.Visible)
{
var v = vScrollBar.Visible ? vScrollBar.WidthRequest : 0;
SetChildBounds(hScrollBar, new Rectangle(Bounds.X, childRectangle.Y + childRectangle.Height + margin, Bounds.Width - v, hheight));
hScrollBar.Value = System.Math.Max(System.Math.Min(Hadjustment.UpperValue - Hadjustment.PageSize, hScrollBar.Value), Hadjustment.LowerValue);
}
}
