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jfreechart example source code file (CombinedRangeCategoryPlotTests.java)

This example jfreechart source code file (CombinedRangeCategoryPlotTests.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, categoryaxis, categorydataset, categoryplot, categoryplot, combinedrangecategoryplot, combinedrangecategoryplot, combinedrangecategoryplottests, defaultcategorydataset, geometry, image, io, numberaxis, string, string, type, type, util

The jfreechart CombinedRangeCategoryPlotTests.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.]
 *
 * ------------------------------------
 * CombinedRangeCategoryPlotTests.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.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.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.labels.StandardCategoryToolTipGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.CombinedRangeCategoryPlot;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;

/**
 * Tests for the {@link CombinedRangeCategoryPlot} class.
 */
public class CombinedRangeCategoryPlotTests 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(CombinedRangeCategoryPlotTests.class);
    }

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

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

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        CombinedRangeCategoryPlot plot1 = createPlot();
        CombinedRangeCategoryPlot plot2 = null;
        try {
            plot2 = (CombinedRangeCategoryPlot) plot1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(plot1 != plot2);
        assertTrue(plot1.getClass() == plot2.getClass());
        assertTrue(plot1.equals(plot2));
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        CombinedRangeCategoryPlot plot1 = createPlot();
        CombinedRangeCategoryPlot 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 = (CombinedRangeCategoryPlot) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(plot1, plot2);

    }

    /**
     * This is a test to replicate the bug report 1121172.
     */
    public void testRemoveSubplot() {
        CombinedRangeCategoryPlot plot = new CombinedRangeCategoryPlot();
        CategoryPlot plot1 = new CategoryPlot();
        CategoryPlot plot2 = new CategoryPlot();
        CategoryPlot plot3 = new CategoryPlot();
        plot.add(plot1);
        plot.add(plot2);
        plot.add(plot3);
        plot.remove(plot2);
        List plots = plot.getSubplots();
        assertEquals(2, plots.size());
    }

    /**
     * Check that only one chart change event is generated by a change to a
     * subplot.
     */
    public void testNotification() {
        CombinedRangeCategoryPlot plot = createPlot();
        JFreeChart chart = new JFreeChart(plot);
        chart.addChangeListener(this);
        CategoryPlot subplot1 = (CategoryPlot) plot.getSubplots().get(0);
        NumberAxis yAxis = (NumberAxis) subplot1.getRangeAxis();
        yAxis.setAutoRangeIncludesZero(!yAxis.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 dataset.
     *
     * @return A dataset.
     */
    public CategoryDataset createDataset1() {

        DefaultCategoryDataset result = new DefaultCategoryDataset();

        // row keys...
        String series1 = "First";
        String series2 = "Second";

        // column keys...
        String type1 = "Type 1";
        String type2 = "Type 2";
        String type3 = "Type 3";
        String type4 = "Type 4";
        String type5 = "Type 5";
        String type6 = "Type 6";
        String type7 = "Type 7";
        String type8 = "Type 8";

        result.addValue(1.0, series1, type1);
        result.addValue(4.0, series1, type2);
        result.addValue(3.0, series1, type3);
        result.addValue(5.0, series1, type4);
        result.addValue(5.0, series1, type5);
        result.addValue(7.0, series1, type6);
        result.addValue(7.0, series1, type7);
        result.addValue(8.0, series1, type8);

        result.addValue(5.0, series2, type1);
        result.addValue(7.0, series2, type2);
        result.addValue(6.0, series2, type3);
        result.addValue(8.0, series2, type4);
        result.addValue(4.0, series2, type5);
        result.addValue(4.0, series2, type6);
        result.addValue(2.0, series2, type7);
        result.addValue(1.0, series2, type8);

        return result;

    }

    /**
     * Creates a dataset.
     *
     * @return A dataset.
     */
    public CategoryDataset createDataset2() {

        DefaultCategoryDataset result = new DefaultCategoryDataset();

        // row keys...
        String series1 = "Third";
        String series2 = "Fourth";

        // column keys...
        String type1 = "Type 1";
        String type2 = "Type 2";
        String type3 = "Type 3";
        String type4 = "Type 4";
        String type5 = "Type 5";
        String type6 = "Type 6";
        String type7 = "Type 7";
        String type8 = "Type 8";

        result.addValue(11.0, series1, type1);
        result.addValue(14.0, series1, type2);
        result.addValue(13.0, series1, type3);
        result.addValue(15.0, series1, type4);
        result.addValue(15.0, series1, type5);
        result.addValue(17.0, series1, type6);
        result.addValue(17.0, series1, type7);
        result.addValue(18.0, series1, type8);

        result.addValue(15.0, series2, type1);
        result.addValue(17.0, series2, type2);
        result.addValue(16.0, series2, type3);
        result.addValue(18.0, series2, type4);
        result.addValue(14.0, series2, type5);
        result.addValue(14.0, series2, type6);
        result.addValue(12.0, series2, type7);
        result.addValue(11.0, series2, type8);

        return result;

    }

    /**
     * Creates a sample plot.
     *
     * @return A plot.
     */
    private CombinedRangeCategoryPlot createPlot() {
        CategoryDataset dataset1 = createDataset1();
        CategoryAxis catAxis1 = new CategoryAxis("Category");
        LineAndShapeRenderer renderer1 = new LineAndShapeRenderer();
        renderer1.setBaseToolTipGenerator(
                new StandardCategoryToolTipGenerator());
        CategoryPlot subplot1 = new CategoryPlot(dataset1, catAxis1, null,
                renderer1);
        subplot1.setDomainGridlinesVisible(true);

        CategoryDataset dataset2 = createDataset2();
        CategoryAxis catAxis2 = new CategoryAxis("Category");
        BarRenderer renderer2 = new BarRenderer();
        renderer2.setBaseToolTipGenerator(
                new StandardCategoryToolTipGenerator());
        CategoryPlot subplot2 = new CategoryPlot(dataset2, catAxis2, null,
                renderer2);
        subplot2.setDomainGridlinesVisible(true);

        NumberAxis rangeAxis = new NumberAxis("Value");
        CombinedRangeCategoryPlot plot = new CombinedRangeCategoryPlot(
                rangeAxis);
        plot.add(subplot1, 2);
        plot.add(subplot2, 1);
        return plot;
    }

}

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