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     * PieChartDemo1.java
029     * ------------------
030     * (C) Copyright 2003-2005, by Object Refinery Limited and Contributors.
031     *
032     * Original Author:  David Gilbert (for Object Refinery Limited);
033     * Contributor(s):   ;
034     *
035     * $Id: PieChartDemo1.java,v 1.2.2.2 2005/10/25 20:41:32 mungady Exp $
036     *
037     * Changes
038     * -------
039     * 09-Mar-2005 : Version 1, copied from the demo collection that ships with
040     *               the JFreeChart Developer Guide (DG);
041     *
042     */
043    
044    package org.jfree.chart.demo;
045    
046    import java.awt.Font;
047    
048    import javax.swing.JPanel;
049    
050    import org.jfree.chart.ChartFactory;
051    import org.jfree.chart.ChartPanel;
052    import org.jfree.chart.JFreeChart;
053    import org.jfree.chart.plot.PiePlot;
054    import org.jfree.data.general.DefaultPieDataset;
055    import org.jfree.data.general.PieDataset;
056    import org.jfree.ui.ApplicationFrame;
057    import org.jfree.ui.RefineryUtilities;
058    
059    /**
060     * A simple demonstration application showing how to create a pie chart using 
061     * data from a {@link DefaultPieDataset}.
062     */
063    public class PieChartDemo1 extends ApplicationFrame {
064    
065        /**
066         * Default constructor.
067         *
068         * @param title  the frame title.
069         */
070        public PieChartDemo1(String title) {
071            super(title);
072            setContentPane(createDemoPanel());
073        }
074    
075        /**
076         * Creates a sample dataset.
077         * 
078         * @return A sample dataset.
079         */
080        private static PieDataset createDataset() {
081            DefaultPieDataset dataset = new DefaultPieDataset();
082            dataset.setValue("One", new Double(43.2));
083            dataset.setValue("Two", new Double(10.0));
084            dataset.setValue("Three", new Double(27.5));
085            dataset.setValue("Four", new Double(17.5));
086            dataset.setValue("Five", new Double(11.0));
087            dataset.setValue("Six", new Double(19.4));
088            return dataset;        
089        }
090        
091        /**
092         * Creates a chart.
093         * 
094         * @param dataset  the dataset.
095         * 
096         * @return A chart.
097         */
098        private static JFreeChart createChart(PieDataset dataset) {
099            
100            JFreeChart chart = ChartFactory.createPieChart(
101                "Pie Chart Demo 1",  // chart title
102                dataset,             // data
103                true,               // include legend
104                true,
105                false
106            );
107    
108            PiePlot plot = (PiePlot) chart.getPlot();
109            plot.setSectionOutlinesVisible(false);
110            plot.setLabelFont(new Font("SansSerif", Font.PLAIN, 12));
111            plot.setNoDataMessage("No data available");
112            plot.setCircular(false);
113            plot.setLabelGap(0.02);
114            return chart;
115            
116        }
117        
118        /**
119         * Creates a panel for the demo (used by SuperDemo.java).
120         * 
121         * @return A panel.
122         */
123        public static JPanel createDemoPanel() {
124            JFreeChart chart = createChart(createDataset());
125            return new ChartPanel(chart);
126        }
127        
128        /**
129         * Starting point for the demonstration application.
130         *
131         * @param args  ignored.
132         */
133        public static void main(String[] args) {
134    
135            PieChartDemo1 demo = new PieChartDemo1("Pie Chart Demo 1");
136            demo.pack();
137            RefineryUtilities.centerFrameOnScreen(demo);
138            demo.setVisible(true);
139    
140        }
141    
142    }