org.eclipse.gmf.runtime.gef.ui/src/org/eclipse/gmf/runtime/gef/ui/internal/figures/ConvexPentagonNodeFigure.java

/******************************************************************************
 * Copyright (c) 2004 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.gmf.runtime.gef.ui.internal.figures;

import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.PointList;

import org.eclipse.gmf.runtime.draw2d.ui.figures.IPolygonAnchorableFigure;
import org.eclipse.gmf.runtime.gef.ui.figures.DefaultSizeNodeFigure;


/**
 * Provides support for Convex Pentagon figure (Send Signal Action for Activity diagram) 
 * 
 * @author oboyko
 */
public class ConvexPentagonNodeFigure
	extends DefaultSizeNodeFigure implements IPolygonAnchorableFigure{

	private static final double DEFAULT_CONVEX_RATIO = 0.25;

	/**
	 * Constructor
	 * @param defSize
	 */
	public ConvexPentagonNodeFigure(Dimension defSize) {
		super(defSize);
	}

	/**
	 * Constructor
	 * @param width
	 * @param height
	 */
	public ConvexPentagonNodeFigure(int width, int height) {
		super(width, height);
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.draw2d.Figure#paintFigure(org.eclipse.draw2d.Graphics)
	 */
	protected void paintFigure(Graphics graphics) {
		PointList pointList = getPolygonPoints();

		graphics.fillPolygon(pointList);
		graphics.drawPolygon(pointList);
	}

	/* (non-Javadoc)
	 * @see org.eclipse.gmf.runtime.gef.ui.internal.figures.IPolygonAnchorableFigure#getPolygonPoints()
	 */
	public PointList getPolygonPoints() {
		PointList ptList = new PointList();
		ptList.addPoint(new Point(getBounds().x, getBounds().y));
		ptList.addPoint(new Point(getBounds().x + getBounds().width*(1-DEFAULT_CONVEX_RATIO), getBounds().y));
		ptList.addPoint(new Point(getBounds().x+getBounds().width, getBounds().y+getBounds().height/2));
		ptList.addPoint(new Point(getBounds().x+getBounds().width*(1-DEFAULT_CONVEX_RATIO), getBounds().y+getBounds().height));
		ptList.addPoint(new Point(getBounds().x, getBounds().y+getBounds().height));
		ptList.addPoint(new Point(getBounds().x, getBounds().y));
		return ptList;
	}
	
}