LoopAnchor.java

/*******************************************************************************
 * Copyright 2005-2006, CHISEL Group, University of Victoria, Victoria, BC, Canada.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     The Chisel Group, University of Victoria
 *******************************************************************************/
package org.eclipse.zest.core.widgets.internal;

import org.eclipse.draw2d.ChopboxAnchor;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Point;

public class LoopAnchor extends ChopboxAnchor {
	public LoopAnchor(IFigure owner) {
		super(owner);
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.draw2d.ChopboxAnchor#getReferencePoint()
	 */
	public Point getReferencePoint() {
		//modification to getReferencePoint. Returns
		//a point on the outside of the owners box, rather than the
		//center. Only usefull for self-loops.
		if (getOwner() == null)
			return null;
		else {
			Point ref = getOwner().getBounds().getCenter();
			ref.y = getOwner().getBounds().y;
			getOwner().translateToAbsolute(ref);
			return ref;
		}
	}
}