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    }