/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.gef.examples.logicdesigner.figures;

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

public class FixedConnectionAnchor 
	extends AbstractConnectionAnchor
{

public boolean leftToRight = true;
public int offsetH;
public int offsetV;
public boolean topDown = true;

public FixedConnectionAnchor(IFigure owner) {
	super(owner);
}

/**
 * @see org.eclipse.draw2d.AbstractConnectionAnchor#ancestorMoved(IFigure)
 */
public void ancestorMoved(IFigure figure) {
	if (figure instanceof ScalableFigure)
		return;
	super.ancestorMoved(figure);
}

public Point getLocation(Point reference) {
	Rectangle r = getOwner().getBounds();
	int x,y;
	if (topDown)
		y = r.y + offsetV;
	else
		y = r.bottom() - 1 - offsetV;

	if (leftToRight)
		x = r.x + offsetH;
	else
		x = r.right() - 1 - offsetH;
	
	Point p = new PrecisionPoint(x,y);
	getOwner().translateToAbsolute(p);
	return p;
}

public Point getReferencePoint(){
	return getLocation(null);
}
	
/**
 * @param offsetH
 *            The offsetH to set.
 */
public void setOffsetH(int offsetH) {
	this.offsetH = offsetH;
	fireAnchorMoved();
}

/**
 * @param offsetV
 *            The offsetV to set.
 */
public void setOffsetV(int offsetV) {
	this.offsetV = offsetV;
	fireAnchorMoved();
}

/*
 * (non-Javadoc)
 * 
 * @see java.lang.Object#equals(java.lang.Object)
 */
public boolean equals(Object o) {
	if (o instanceof FixedConnectionAnchor) {
		FixedConnectionAnchor fa = (FixedConnectionAnchor)o;
		
		if (fa.leftToRight == this.leftToRight &&
			fa.topDown == this.topDown &&
			fa.offsetH == this.offsetH &&
			fa.offsetV == this.offsetV &&
			fa.getOwner() == this.getOwner()) {
			return true;
		}
	}
	
	return false;
}

/*
 * (non-Javadoc)
 * 
 * @see java.lang.Object#hashCode()
 */
public int hashCode() {
	return ((this.leftToRight ? 31 : 0) + (this.topDown ? 37 : 0) +  
	        this.offsetH * 43 + this.offsetV * 47) ^ 
	        this.getOwner().hashCode();
}



}