imagemapdemo3.java

JfreeChart 常用图表例子

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2004, 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.]
 *
 * ------------------
 * ImageMapDemo3.java
 * ------------------
 * (C) Copyright 2002-2004, by Richard Atkinson and Contributors.
 *
 * Original Author:  Richard Atkinson ([e-mail]);
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *
 * $Id: ImageMapDemo3.java,v 1.16 2004/04/26 19:11:55 taqua Exp $
 *
 * Changes
 * -------
 * 18-Jul-2002 : Version 1 (RA);
 * 10-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 *
 */
package org.jfree.chart.demo;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;

import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.entity.StandardEntityCollection;
import org.jfree.chart.labels.CustomXYToolTipGenerator;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.chart.urls.StandardXYURLGenerator;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;

/**
 * A demo showing the construction of HTML image maps for a time series chart.
 *
 * @author Richard Atkinson
 */
public class ImageMapDemo3 {

    /**
     * Default constructor.
     */
    public ImageMapDemo3() {
        super();
    }

    /**
     * Starting point for the demo.
     *
     * @param args  ignored.
     *
     * @throws ParseException if there is a problem parsing dates.
     */
    public static void main(final String[] args) throws ParseException {

        //  Create a sample dataset
        final SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy");
        final XYSeries dataSeries = new XYSeries("Curve data");
        final ArrayList toolTips = new ArrayList();
        dataSeries.add(sdf.parse("01-Jul-2002").getTime(), 5.22);
        toolTips.add("1D - 5.22");
        dataSeries.add(sdf.parse("02-Jul-2002").getTime(), 5.18);
        toolTips.add("2D - 5.18");
        dataSeries.add(sdf.parse("03-Jul-2002").getTime(), 5.23);
        toolTips.add("3D - 5.23");
        dataSeries.add(sdf.parse("04-Jul-2002").getTime(), 5.15);
        toolTips.add("4D - 5.15");
        dataSeries.add(sdf.parse("05-Jul-2002").getTime(), 5.22);
        toolTips.add("5D - 5.22");
        dataSeries.add(sdf.parse("06-Jul-2002").getTime(), 5.25);
        toolTips.add("6D - 5.25");
        dataSeries.add(sdf.parse("07-Jul-2002").getTime(), 5.31);
        toolTips.add("7D - 5.31");
        dataSeries.add(sdf.parse("08-Jul-2002").getTime(), 5.36);
        toolTips.add("8D - 5.36");
        final XYSeriesCollection xyDataset = new XYSeriesCollection(dataSeries);
        final CustomXYToolTipGenerator ttg = new CustomXYToolTipGenerator();
        ttg.addToolTipSeries(toolTips);

        //  Create the chart
        final StandardXYURLGenerator urlg = new StandardXYURLGenerator("xy_details.jsp");
        final ValueAxis timeAxis = new DateAxis("");
        final NumberAxis valueAxis = new NumberAxis("");
        valueAxis.setAutoRangeIncludesZero(false);  // override default
        final XYPlot plot = new XYPlot(xyDataset, timeAxis, valueAxis, null);
        final StandardXYItemRenderer sxyir = new StandardXYItemRenderer(
            StandardXYItemRenderer.LINES + StandardXYItemRenderer.SHAPES,
            ttg, urlg);
        sxyir.setShapesFilled(true);
        plot.setRenderer(sxyir);
        final JFreeChart chart = new JFreeChart("", JFreeChart.DEFAULT_TITLE_FONT, plot, false);
        chart.setBackgroundPaint(java.awt.Color.white);

        // ****************************************************************************
        // * JFREECHART DEVELOPER GUIDE                                               *
        // * The JFreeChart Developer Guide, written by David Gilbert, is available   *
        // * to purchase from Object Refinery Limited:                                *
        // *                                                                          *
        // * http://www.object-refinery.com/jfreechart/guide.html                     *
        // *                                                                          *
        // * Sales are used to provide funding for the JFreeChart project - please    * 
        // * support us so that we can continue developing free software.             *
        // ****************************************************************************
        
        // save it to an image
        try {
            final ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
            final File file1 = new File("xychart100.png");
            ChartUtilities.saveChartAsPNG(file1, chart, 600, 400, info);

            // write an HTML page incorporating the image with an image map
            final File file2 = new File("xychart100.html");
            final OutputStream out = new BufferedOutputStream(new FileOutputStream(file2));
            final PrintWriter writer = new PrintWriter(out);
            writer.println("<HTML>");
            writer.println("<HEAD><TITLE>JFreeChart Image Map Demo</TITLE></HEAD>");
            writer.println("<BODY>");
//            ChartUtilities.writeImageMap(writer, "chart", info);
            writer.println("<IMG SRC=\"xychart100.png\" "
                           + "WIDTH=\"600\" HEIGHT=\"400\" BORDER=\"0\" USEMAP=\"#chart\">");
            writer.println("</BODY>");
            writer.println("</HTML>");
            writer.close();

        }
        catch (IOException e) {
            System.out.println(e.toString());
        }
        return;
    }
}