org.eclipse.gmf.runtime.diagram.ui.geoshapes/src/org/eclipse/gmf/runtime/diagram/ui/geoshapes/internal/draw2d/figures/GeoShapePolygonFigure.java

/******************************************************************************
 * Copyright (c) 2003, 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.diagram.ui.geoshapes.internal.draw2d.figures;

import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.geometry.PointList;
import org.eclipse.draw2d.geometry.Rectangle;

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

/**
 * Base class for polygons in the Geometric shapes palette
 * 
 * @author jschofie
 */
public abstract class GeoShapePolygonFigure
	extends GeoShapeFigure
	implements IPolygonAnchorableFigure {

	/**
	 * sub-class must return their list of points based on the object size
	 */
	abstract protected PointList calculatePoints(Rectangle rect);

	public GeoShapePolygonFigure(int width, int height, int spacing) {
		super(width, height, spacing);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.draw2d.Figure#paintFigure(org.eclipse.draw2d.Graphics)
	 */
	protected void paintFigure(Graphics g) {
		PointList points = calculatePoints(getBounds().getCopy());
		g.fillPolygon(points);
		g.drawPolygon(points);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gmf.runtime.diagram.ui.geoshapes.internal.draw2d.figures.IPolygonAnchorableFigure#getPolygonPoints()
	 */
	public PointList getPolygonPoints() {
		return calculatePoints(getBounds().getCopy());
	}

}