BottomAnchor.java

/*******************************************************************************
 *  Copyright (c) 2012 VMware, Inc.
 *  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:
 *      VMware, Inc. - initial API and implementation
 *******************************************************************************/
package org.springframework.ide.eclipse.config.graph.parts;

import org.eclipse.draw2d.AbstractConnectionAnchor;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;

/**
 * @author Leo Dos Santos
 * @author Christian Dupuis
 */
public class BottomAnchor extends AbstractConnectionAnchor {

	private final int offset;

	public BottomAnchor(IFigure source, int offset) {
		super(source);
		this.offset = offset;
	}

	public Point getLocation(Point reference) {
		Rectangle r = getOwner().getBounds().getCopy();
		getOwner().translateToAbsolute(r);
		int off = offset;
		if (off == -1) {
			off = r.width / 2;
		}
		return r.getBottomLeft().translate(off, -1);
	}

	@Override
	public Point getReferencePoint() {
		Point ref = getOwner().getBounds().getBottom();
		getOwner().translateToAbsolute(ref);
		return ref;
	}

}