// only allow resizing vertically
public override void AddSelectionHandles(GoSelection sel, GoObject selectedObj)
{
Lifeline line = this.Parent as Lifeline;
if (line != null)
{
RemoveSelectionHandles(sel);
sel.CreateResizeHandle(this, selectedObj, line.GetStepPoint(this.Begin), MiddleTop, true);
sel.CreateResizeHandle(this, selectedObj, line.GetStepPoint(this.End), MiddleBottom, true);
}
else
{
base.AddSelectionHandles(sel, selectedObj);
}
}
public override PointF GetToLinkPoint(IGoLink link)
{
Message m = link as Message;
Lifeline line = this.Parent as Lifeline;
if (m != null && m.FromPort != null)
{
PointF p = line.GetStepPoint(m.Step);
Activation act = line.FindActivation(m.Step);
if (act != null)
{
p.X += ((m.FromPort.GoObject.Center.X > p.X) ? act.Width / 2 : -act.Width / 2);
}
return(p);
}
else
{
return(base.GetToLinkPoint(link));
}
}