/// <summary>
/// adds the drw to inner drws of (this), and sets (this) as the drw parent,
/// and adds the drw to the DC if it is initialized,
/// this method doesn't draw the drawable
/// </summary>
public CompositeDrawable add(Drawable d)
{
//set changed to true, because it might has been drawn
this.setChanged(true);
//
this.drawables.Add(d);
d.parent = this;
if (this.dc != null)
{
d.setDC(this.dc);
}
else
{
//dc must be set to parent before adding any children
throw new Exception("'drawing controller' must be set to a parent before adding any children");
}
d.scaleToParent();
//if composite init cache
if (d is CompositeDrawable)
{
((CompositeDrawable)d).initCache();
}
//
return(this);
}
private void setDrwController(Drawable drw)
{
drw.setDC(this);
if (drw is CompositeDrawable)
{
foreach (Drawable d in ((CompositeDrawable)drw).drawables)
{
setDrwController(d);
}
}
}
