001    /* ===========================================================
002     * JFreeChart : a free chart library for the Java(tm) platform
003     * ===========================================================
004     *
005     * (C) Copyright 2000-2008, 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     * CategoryAnnotation.java
029     * -----------------------
030     * (C) Copyright 2003-2008, by Object Refinery Limited.
031     *
032     * Original Author:  David Gilbert (for Object Refinery Limited);
033     * Contributor(s):   -;
034     *
035     * Changes:
036     * --------
037     * 02-Apr-2003 : Version 1 (DG);
038     * 02-Jul-2003 : Eliminated Annotation base interface (DG);
039     *
040     */
041    
042    package org.jfree.chart.annotations;
043    
044    import java.awt.Graphics2D;
045    import java.awt.geom.Rectangle2D;
046    
047    import org.jfree.chart.axis.CategoryAxis;
048    import org.jfree.chart.axis.ValueAxis;
049    import org.jfree.chart.plot.CategoryPlot;
050    
051    /**
052     * The interface that must be supported by annotations that are to be added to
053     * a {@link org.jfree.chart.plot.CategoryPlot}.
054     */
055    public interface CategoryAnnotation {
056    
057        /**
058         * Draws the annotation.
059         *
060         * @param g2  the graphics device.
061         * @param plot  the plot.
062         * @param dataArea  the data area.
063         * @param domainAxis  the domain axis.
064         * @param rangeAxis  the range axis.
065         */
066        public void draw(Graphics2D g2, CategoryPlot plot, Rectangle2D dataArea,
067                         CategoryAxis domainAxis, ValueAxis rangeAxis);
068    
069    }