    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
    041    package org.jfree.chart.demo;
    042
    043    import java.awt.Color;
    044    import java.awt.Dimension;
    045    import java.awt.GradientPaint;
    046
    047    import org.jfree.chart.ChartFactory;
    048    import org.jfree.chart.ChartPanel;
    049    import org.jfree.chart.JFreeChart;
    050    import org.jfree.chart.StandardChartTheme;
    051    import org.jfree.chart.axis.CategoryAxis;
    052    import org.jfree.chart.axis.CategoryLabelPositions;
    053    import org.jfree.chart.axis.NumberAxis;
    054    import org.jfree.chart.plot.CategoryPlot;
    055    import org.jfree.chart.plot.PlotOrientation;
    056    import org.jfree.chart.renderer.category.BarRenderer;
    057    import org.jfree.data.category.CategoryDataset;
    058    import org.jfree.data.category.DefaultCategoryDataset;
    059    import org.jfree.ui.ApplicationFrame;
    060    import org.jfree.ui.RefineryUtilities;
    061
    062    /**
    063     * A simple demonstration application showing how to create a bar chart.
    064     */
    065    public 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    }