    001/* ===========================================================
    002 * JFreeChart : a free chart library for the Java(tm) platform
    003 * ===========================================================
    004 *
    005 * (C) Copyright 2000-2011, 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 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
    025 * Other names may be trademarks of their respective owners.]
    026 *
    027 * ------------------
    028 * BarChartDemo1.java
    029 * ------------------
    030 * (C) Copyright 2003-2011, by Object Refinery Limited and Contributors.
    031 *
    032 * Original Author:  David Gilbert (for Object Refinery Limited);
    033 * Contributor(s):   ;
    034 *
    035 * Changes
    036 * -------
    037 * 09-Mar-2005 : Version 1 (DG);
    038 *
    039 */
    040
    041package org.jfree.chart.demo;
    042
    043import java.awt.Color;
    044import java.awt.Dimension;
    045import java.awt.GradientPaint;
    046
    047import org.jfree.chart.ChartFactory;
    048import org.jfree.chart.ChartPanel;
    049import org.jfree.chart.JFreeChart;
    050import org.jfree.chart.StandardChartTheme;
    051import org.jfree.chart.axis.CategoryAxis;
    052import org.jfree.chart.axis.CategoryLabelPositions;
    053import org.jfree.chart.axis.NumberAxis;
    054import org.jfree.chart.plot.CategoryPlot;
    055import org.jfree.chart.plot.PlotOrientation;
    056import org.jfree.chart.renderer.category.BarRenderer;
    057import org.jfree.data.category.CategoryDataset;
    058import org.jfree.data.category.DefaultCategoryDataset;
    059import org.jfree.ui.ApplicationFrame;
    060import org.jfree.ui.RefineryUtilities;
    061
    062/**
    063 * A simple demonstration application showing how to create a bar chart.
    064 */
    065public class BarChartDemo1 extends ApplicationFrame {
    066
    067    private static final long serialVersionUID = 1L;
    068
    069    {
    070        // set a theme using the new shadow generator feature available in
    071        // 1.0.14 - for backwards compatibility it is not enabled by default
    072        ChartFactory.setChartTheme(new StandardChartTheme("JFree/Shadow",
    073                true));
    074    }
    075
    076    /**
    077     * Creates a new demo instance.
    078     *
    079     * @param title  the frame title.
    080     */
    081    public BarChartDemo1(String title) {
    082        super(title);
    083        CategoryDataset dataset = createDataset();
    084        JFreeChart chart = createChart(dataset);
    085        ChartPanel chartPanel = new ChartPanel(chart);
    086        chartPanel.setFillZoomRectangle(true);
    087        chartPanel.setMouseWheelEnabled(true);
    088        chartPanel.setPreferredSize(new Dimension(500, 270));
    089        setContentPane(chartPanel);
    090    }
    091
    092    /**
    093     * Returns a sample dataset.
    094     *
    095     * @return The dataset.
    096     */
    097    private static CategoryDataset createDataset() {
    098
    099        // row keys...
    100        String series1 = "First";
    101        String series2 = "Second";
    102        String series3 = "Third";
    103
    104        // column keys...
    105        String category1 = "Category 1";
    106        String category2 = "Category 2";
    107        String category3 = "Category 3";
    108        String category4 = "Category 4";
    109        String category5 = "Category 5";
    110
    111        // create the dataset...
    112        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    113
    114        dataset.addValue(1.0, series1, category1);
    115        dataset.addValue(4.0, series1, category2);
    116        dataset.addValue(3.0, series1, category3);
    117        dataset.addValue(5.0, series1, category4);
    118        dataset.addValue(5.0, series1, category5);
    119
    120        dataset.addValue(5.0, series2, category1);
    121        dataset.addValue(7.0, series2, category2);
    122        dataset.addValue(6.0, series2, category3);
    123        dataset.addValue(8.0, series2, category4);
    124        dataset.addValue(4.0, series2, category5);
    125
    126        dataset.addValue(4.0, series3, category1);
    127        dataset.addValue(3.0, series3, category2);
    128        dataset.addValue(2.0, series3, category3);
    129        dataset.addValue(3.0, series3, category4);
    130        dataset.addValue(6.0, series3, category5);
    131
    132        return dataset;
    133
    134    }
    135
    136    /**
    137     * Creates a sample chart.
    138     *
    139     * @param dataset  the dataset.
    140     *
    141     * @return The chart.
    142     */
    143    private static JFreeChart createChart(CategoryDataset dataset) {
    144
    145        // create the chart...
    146        JFreeChart chart = ChartFactory.createBarChart(
    147            "Bar Chart Demo 1",       // chart title
    148            "Category",               // domain axis label
    149            "Value",                  // range axis label
    150            dataset,                  // data
    151            PlotOrientation.VERTICAL, // orientation
    152            true,                     // include legend
    153            true,                     // tooltips?
    154            false                     // URLs?
    155        );
    156
    157        // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
    158
    159        // set the background color for the chart...
    160        chart.setBackgroundPaint(Color.white);
    161
    162        // get a reference to the plot for further customisation...
    163        CategoryPlot plot = (CategoryPlot) chart.getPlot();
    164
    165        // ******************************************************************
    166        //  More than 150 demo applications are included with the JFreeChart
    167        //  Developer Guide...for more information, see:
    168        //
    169        //  >   http://www.object-refinery.com/jfreechart/guide.html
    170        //
    171        // ******************************************************************
    172
    173        // set the range axis to display integers only...
    174        NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    175        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    176
    177        // disable bar outlines...
    178        BarRenderer renderer = (BarRenderer) plot.getRenderer();
    179        renderer.setDrawBarOutline(false);
    180
    181        // set up gradient paints for series...
    182        GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue,
    183                0.0f, 0.0f, new Color(0, 0, 64));
    184        GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green,
    185                0.0f, 0.0f, new Color(0, 64, 0));
    186        GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red,
    187                0.0f, 0.0f, new Color(64, 0, 0));
    188        renderer.setSeriesPaint(0, gp0);
    189        renderer.setSeriesPaint(1, gp1);
    190        renderer.setSeriesPaint(2, gp2);
    191
    192        CategoryAxis domainAxis = plot.getDomainAxis();
    193        domainAxis.setCategoryLabelPositions(
    194                CategoryLabelPositions.createUpRotationLabelPositions(
    195                        Math.PI / 6.0));
    196        // OPTIONAL CUSTOMISATION COMPLETED.
    197
    198        return chart;
    199
    200    }
    201
    202    /**
    203     * Starting point for the demonstration application.
    204     *
    205     * @param args  ignored.
    206     */
    207    public static void main(String[] args) {
    208        BarChartDemo1 demo = new BarChartDemo1("Bar Chart Demo 1");
    209        demo.pack();
    210        RefineryUtilities.centerFrameOnScreen(demo);
    211        demo.setVisible(true);
    212    }
    213
    214}