jfreechart example source code file (CombinedRangeXYPlotTests.java)

This example jfreechart source code file (CombinedRangeXYPlotTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - jfreechart tags/keywords

awt, bufferedimage, combinedrangexyplot, combinedrangexyplot, geometry, image, io, list, numberaxis, numberaxis, series, util, xydataset, xyplot, xyplot, xyseries, xyseries, xyseriescollection, xytextannotation

The jfreechart CombinedRangeXYPlotTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * -----------------------------
 * CombinedRangeXYPlotTests.java
 * -----------------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 21-Aug-2003 : Version 1 (DG);
 * 03-Jan-2008 : Added testNotification (DG);
 *
 */

package org.jfree.chart.plot.junit;

import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.util.List;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.jfree.chart.JFreeChart;
import org.jfree.chart.annotations.XYTextAnnotation;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.plot.CombinedRangeXYPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;

/**
 * Tests for the {@link CombinedRangeXYPlot} class.
 */
public class CombinedRangeXYPlotTests extends TestCase
        implements ChartChangeListener {

    /** A list of the events received. */
    private List events = new java.util.ArrayList();

    /**
     * Receives a chart change event.
     *
     * @param event  the event.
     */
    public void chartChanged(ChartChangeEvent event) {
        this.events.add(event);
    }

    /**
     * Returns the tests as a test suite.
     *
     * @return The test suite.
     */
    public static Test suite() {
        return new TestSuite(CombinedRangeXYPlotTests.class);
    }

    /**
     * Constructs a new set of tests.
     *
     * @param name  the name of the tests.
     */
    public CombinedRangeXYPlotTests(String name) {
        super(name);
    }

    /**
     * Test the equals method.
     */
    public void testEquals() {
        CombinedRangeXYPlot plot1 = createPlot();
        CombinedRangeXYPlot plot2 = createPlot();
        assertTrue(plot1.equals(plot2));
        assertTrue(plot2.equals(plot1));
    }

    /**
     * This is a test to replicate the bug report 987080.
     */
    public void testRemoveSubplot() {
        CombinedRangeXYPlot plot = new CombinedRangeXYPlot();
        XYPlot plot1 = new XYPlot();
        XYPlot plot2 = new XYPlot();
        plot.add(plot1);
        plot.add(plot2);
        // remove plot2, but plot1 is removed instead
        plot.remove(plot2);
        List plots = plot.getSubplots();
        assertTrue(plots.get(0) == plot1);
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        CombinedRangeXYPlot plot1 = createPlot();
        CombinedRangeXYPlot plot2 = null;
        try {
            plot2 = (CombinedRangeXYPlot) plot1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(plot1 != plot2);
        assertTrue(plot1.getClass() == plot2.getClass());
        assertTrue(plot1.equals(plot2));
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        CombinedRangeXYPlot plot1 = createPlot();
        CombinedRangeXYPlot plot2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(plot1);
            out.close();

            ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
                    buffer.toByteArray()));
            plot2 = (CombinedRangeXYPlot) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(plot1, plot2);
    }

    /**
     * Check that only one chart change event is generated by a change to a
     * subplot.
     */
    public void testNotification() {
        CombinedRangeXYPlot plot = createPlot();
        JFreeChart chart = new JFreeChart(plot);
        chart.addChangeListener(this);
        XYPlot subplot1 = (XYPlot) plot.getSubplots().get(0);
        NumberAxis xAxis = (NumberAxis) subplot1.getDomainAxis();
        xAxis.setAutoRangeIncludesZero(!xAxis.getAutoRangeIncludesZero());
        assertEquals(1, this.events.size());

        // a redraw should NOT trigger another change event
        BufferedImage image = new BufferedImage(200, 100,
                BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = image.createGraphics();
        this.events.clear();
        chart.draw(g2, new Rectangle2D.Double(0.0, 0.0, 200.0, 100.0));
        assertTrue(this.events.isEmpty());
    }

    /**
     * Creates a sample dataset.
     *
     * @return Series 1.
     */
    private XYDataset createDataset1() {

        XYSeries series1 = new XYSeries("Series 1");
        series1.add(10.0, 12353.3);
        series1.add(20.0, 13734.4);
        series1.add(30.0, 14525.3);
        series1.add(40.0, 13984.3);
        series1.add(50.0, 12999.4);
        series1.add(60.0, 14274.3);
        series1.add(70.0, 15943.5);
        series1.add(80.0, 14845.3);
        series1.add(90.0, 14645.4);
        series1.add(100.0, 16234.6);
        series1.add(110.0, 17232.3);
        series1.add(120.0, 14232.2);
        series1.add(130.0, 13102.2);
        series1.add(140.0, 14230.2);
        series1.add(150.0, 11235.2);

        XYSeries series2 = new XYSeries("Series 2");
        series2.add(10.0, 15000.3);
        series2.add(20.0, 11000.4);
        series2.add(30.0, 17000.3);
        series2.add(40.0, 15000.3);
        series2.add(50.0, 14000.4);
        series2.add(60.0, 12000.3);
        series2.add(70.0, 11000.5);
        series2.add(80.0, 12000.3);
        series2.add(90.0, 13000.4);
        series2.add(100.0, 12000.6);
        series2.add(110.0, 13000.3);
        series2.add(120.0, 17000.2);
        series2.add(130.0, 18000.2);
        series2.add(140.0, 16000.2);
        series2.add(150.0, 17000.2);

        XYSeriesCollection collection = new XYSeriesCollection();
        collection.addSeries(series1);
        collection.addSeries(series2);
        return collection;

    }

    /**
     * Creates a sample dataset.
     *
     * @return Series 2.
     */
    private XYDataset createDataset2() {

        // create dataset 2...
        XYSeries series2 = new XYSeries("Series 3");

        series2.add(10.0, 16853.2);
        series2.add(20.0, 19642.3);
        series2.add(30.0, 18253.5);
        series2.add(40.0, 15352.3);
        series2.add(50.0, 13532.0);
        series2.add(100.0, 12635.3);
        series2.add(110.0, 13998.2);
        series2.add(120.0, 11943.2);
        series2.add(130.0, 16943.9);
        series2.add(140.0, 17843.2);
        series2.add(150.0, 16495.3);
        series2.add(160.0, 17943.6);
        series2.add(170.0, 18500.7);
        series2.add(180.0, 19595.9);

        return new XYSeriesCollection(series2);

    }

    /**
     * Creates a sample plot.
     *
     * @return A sample plot.
     */
    private CombinedRangeXYPlot createPlot() {
        // create subplot 1...
        XYDataset data1 = createDataset1();
        XYItemRenderer renderer1 = new StandardXYItemRenderer();
        NumberAxis xAxis1 = new NumberAxis("X1");
        XYPlot subplot1 = new XYPlot(data1, xAxis1, null, renderer1);
        subplot1.setRangeAxisLocation(AxisLocation.BOTTOM_OR_LEFT);

        XYTextAnnotation annotation
                = new XYTextAnnotation("Hello!", 50.0, 10000.0);
        annotation.setFont(new Font("SansSerif", Font.PLAIN, 9));
        annotation.setRotationAngle(Math.PI / 4.0);
        subplot1.addAnnotation(annotation);

        // create subplot 2...
        XYDataset data2 = createDataset2();
        XYItemRenderer renderer2 = new StandardXYItemRenderer();
        NumberAxis xAxis2 = new NumberAxis("X2");
        xAxis2.setAutoRangeIncludesZero(false);
        XYPlot subplot2 = new XYPlot(data2, xAxis2, null, renderer2);
        subplot2.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);

        // parent plot...
        CombinedRangeXYPlot plot = new CombinedRangeXYPlot(new NumberAxis(
                "Range"));
        plot.setGap(10.0);

        // add the subplots...
        plot.add(subplot1, 1);
        plot.add(subplot2, 1);
        plot.setOrientation(PlotOrientation.VERTICAL);
        return plot;
    }

}