com.wsn.PieChartDemo.java Source code

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Here is the source code for com.wsn.PieChartDemo.java

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/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by 
 * the Free Software Foundation; either version 2.1 of the License, or 
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License 
 * along with this library; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * ------------------
 * PieChartDemo1.java
 * ------------------
 * (C) Copyright 2003-2005, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   ;
 *
 * $Id: PieChartDemo1.java,v 1.2 2005/03/28 19:38:45 mungady Exp $
 *
 * Changes
 * -------
 * 09-Mar-2005 : Version 1, copied from the demo collection that ships with
 *               the JFreeChart Developer Guide (DG);
 *
 */

package com.wsn;

import java.awt.Dimension;
import java.awt.Font;
import java.util.ArrayList;
import javax.swing.JFrame;

import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;

/**
 * A simple demonstration application showing how to create a pie chart using 
 * data from a {@link DefaultPieDataset}.
 */
public class PieChartDemo extends JFrame {

    /**
     * Default constructor.
     *
     * @param title  the frame title.
     */
    public PieChartDemo(String title, double successRate, double lostRate) {
        super(title);
        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        setContentPane(createDemoPanel(successRate, lostRate));
    }

    /**
     * Creates a sample dataset.
     * 
     * @return A sample dataset.
     */
    private static PieDataset createDataset(double successRate, double lostRate) {
        DefaultPieDataset dataset = new DefaultPieDataset();
        dataset.setValue("Fail", new Double(lostRate));
        dataset.setValue("Success", new Double(successRate));
        return dataset;
    }

    /**
     * Creates a chart.
     * 
     * @param dataset  the dataset.
     * 
     * @return A chart.
     */
    private static JFreeChart createChart(PieDataset dataset) {

        JFreeChart chart = ChartFactory.createPieChart("Pie Chart Demo", // chart title
                dataset, // data
                true, // include legend
                true, false);

        PiePlot plot = (PiePlot) chart.getPlot();
        plot.setLabelFont(new Font("SansSerif", Font.PLAIN, 12));
        plot.setNoDataMessage("No data available");
        plot.setCircular(false);
        plot.setLabelGap(0.02);
        return chart;

    }

    /**
     * Creates a panel for the demo (used by SuperDemo.java).
     * 
     * @return A panel.
     */
    public static JPanel createDemoPanel(double successRate, double lostRate) {
        JFreeChart chart = createChart(createDataset(successRate, lostRate));
        return new ChartPanel(chart);
    }

    /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */

}