Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/sequence2/diagram/FigMessageSpline.java
// $Id: FigMessageSpline.java 16381 2008-12-19 15:37:46Z bobtarling $
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package org.argouml.sequence2.diagram;

import java.awt.Point;

import org.tigris.gef.presentation.FigSpline;

/**
 * FigMessageSpline refines the behaviour of a Spline for a self-message
 * in the sequence diagram.
 * @author penyaskito
 */
public class FigMessageSpline extends FigSpline {
    
    public FigMessageSpline () {
        // this constructor is needed for PGMLStackParser to load
        // saved diagrams. It does nothing, because 
        // PGMLStackParser will call setPoints later.
    }
    
    FigMessageSpline (Point start) {
	assert (start != null) : "Point can't be null";
	
	Point end = new Point(start.x, start.y + 20);

	Point middle = new Point();
	middle.x = start.x + 100;
	middle.y = (start.y + end.y) / 2;

	super.setFilled(false);
	super.setComplete(false);
	super.addPoint(start);
	super.addPoint(new Point(start.x + 20, start.y));
	super.addPoint(middle);
	super.addPoint(new Point(end.x + 20, end.y));
	super.addPoint(end);
    }
    
    /**
     * This method is overridden in order to ignore change of the y coordinate
     * during draging. Use translateFig(int dx, int dy) to force change of the
     * y coordinate.
     * @param dx the x offset
     * @param dy the y offset - IGNORED
     * @see org.tigris.gef.presentation.Fig#translate(int, int)
     */
    public void translate(int dx, int dy) {
    	super.translate(dx, 0);
    }
    
    /**
     * Used in order to force translation of both X and Y coordiante.
     * 
     * @param dx the x offset
     * @param dy the y offset
     * @see org.tigris.gef.presentation.Fig#translate(int, int)
     */
    public void translateFig(int dx, int dy) {
    	super.translate(dx, dy);
    }
    
}
