001    /* ===========================================================
002     * JFreeChart : a free chart library for the Java(tm) platform
003     * ===========================================================
004     *
005     * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
006     *
007     * Project Info:  http://www.jfree.org/jfreechart/index.html
008     *
009     * This library is free software; you can redistribute it and/or modify it 
010     * under the terms of the GNU Lesser General Public License as published by 
011     * the Free Software Foundation; either version 2.1 of the License, or 
012     * (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but 
015     * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
016     * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
017     * License for more details.
018     *
019     * You should have received a copy of the GNU Lesser General Public
020     * License along with this library; if not, write to the Free Software
021     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
022     * USA.  
023     *
024     * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025     * in the United States and other countries.]
026     *
027     * --------------------
028     * DrawingSupplier.java
029     * --------------------
030     * (C) Copyright 2003, 2004, by Object Refinery Limited.
031     *
032     * Original Author:  David Gilbert (for Object Refinery Limited);
033     * Contributor(s):   -;
034     *
035     * $Id: DrawingSupplier.java,v 1.3.2.1 2005/10/25 20:52:08 mungady Exp $
036     *
037     * Changes
038     * -------
039     * 16-Jan-2003 : Version 1 (DG);
040     * 17-Jan-2003 : Renamed PaintSupplier --> DrawingSupplier (DG);
041     *
042     */
043    
044    package org.jfree.chart.plot;
045    
046    import java.awt.Paint;
047    import java.awt.Shape;
048    import java.awt.Stroke;
049    
050    /**
051     * A supplier of <code>Paint</code> and <code>Stroke</code> objects.
052     * <p>
053     * To support the cloning of charts, classes that implement this interface 
054     * should also implement <code>PublicCloneable</code>.
055     */
056    public interface DrawingSupplier {
057    
058        /**
059         * Returns the next paint in a sequence maintained by the supplier.
060         *
061         * @return The paint.
062         */
063        public Paint getNextPaint();
064    
065        /**
066         * Returns the next outline paint in a sequence maintained by the supplier.
067         *
068         * @return The paint.
069         */
070        public Paint getNextOutlinePaint();
071    
072        /**
073         * Returns the next <code>Stroke</code> object in a sequence maintained by
074         * the supplier.
075         *
076         * @return The stroke.
077         */
078        public Stroke getNextStroke();
079    
080        /**
081         * Returns the next <code>Stroke</code> object in a sequence maintained by
082         * the supplier.
083         *
084         * @return The stroke.
085         */
086        public Stroke getNextOutlineStroke();
087    
088        /**
089         * Returns the next <code>Shape</code> object in a sequence maintained by
090         * the supplier.
091         *
092         * @return The shape.
093         */
094        public Shape getNextShape();
095    
096    }