//Bounds checking by element
public virtual SizeF BoundsCheck(Element element, SizeF delta)
{
//Return pass if the controller does not have boundary checking or the delta is empty
if (!CheckBounds)
{
return(delta);
}
if (delta.IsEmpty)
{
return(delta);
}
Element action = element.ActionElement;
bool contains = false;
//If the original (action) is contained in the container
contains = (Model.Contains(new PointF(action.Bounds.X + delta.Width, action.Bounds.Y + delta.Height))); // && container.Contains(new PointF(action.Rectangle.Right + container.Offset.X + delta.Width, action.Rectangle.Bottom + container.Offset.Y + delta.Height), container.Margin));
contains = contains && (Model.Contains(new PointF(action.Bounds.Right + delta.Width, action.Bounds.Bottom + delta.Height)));
if (contains)
{
return(delta);
}
return(SizeF.Empty);
}
//Bounds checking by point
public virtual bool BoundsCheck(PointF action, float dx, float dy)
{
//Return pass if the diagram does not have boundary checking
if (!CheckBounds)
{
return(true);
}
//If the original (action) is contained in the container
if (Model.Contains(new PointF(action.X, action.Y)))
{
//Check top left
if (!Model.Contains(new PointF(action.X + dx, action.Y + dy)))
{
return(false);
}
}
return(true);
}