001    /* ===========================================================
002     * JFreeChart : a free chart library for the Java(tm) platform
003     * ===========================================================
004     *
005     * (C) Copyright 2000-2007, 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     * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025     * in the United States and other countries.]
026     *
027     * ------------------
028     * BarChartDemo1.java
029     * ------------------
030     * (C) Copyright 2003-2007, by Object Refinery Limited and Contributors.
031     *
032     * Original Author:  David Gilbert (for Object Refinery Limited);
033     * Contributor(s):   ;
034     *
035     * $Id: BarChartDemo1.java,v 1.1.2.4 2007/03/02 10:45:23 mungady Exp $
036     *
037     * Changes
038     * -------
039     * 09-Mar-2005 : Version 1 (DG);
040     *
041     */
042    
043    package org.jfree.chart.demo;
044    
045    import java.awt.Color;
046    import java.awt.Dimension;
047    import java.awt.GradientPaint;
048    
049    import org.jfree.chart.ChartFactory;
050    import org.jfree.chart.ChartPanel;
051    import org.jfree.chart.JFreeChart;
052    import org.jfree.chart.axis.CategoryAxis;
053    import org.jfree.chart.axis.CategoryLabelPositions;
054    import org.jfree.chart.axis.NumberAxis;
055    import org.jfree.chart.plot.CategoryPlot;
056    import org.jfree.chart.plot.PlotOrientation;
057    import org.jfree.chart.renderer.category.BarRenderer;
058    import org.jfree.data.category.CategoryDataset;
059    import org.jfree.data.category.DefaultCategoryDataset;
060    import org.jfree.ui.ApplicationFrame;
061    import org.jfree.ui.RefineryUtilities;
062    
063    /**
064     * A simple demonstration application showing how to create a bar chart.
065     */
066    public class BarChartDemo1 extends ApplicationFrame {
067    
068        /**
069         * Creates a new demo instance.
070         *
071         * @param title  the frame title.
072         */
073        public BarChartDemo1(String title) {
074            super(title);
075            CategoryDataset dataset = createDataset();
076            JFreeChart chart = createChart(dataset);
077            ChartPanel chartPanel = new ChartPanel(chart, false);
078            chartPanel.setPreferredSize(new Dimension(500, 270));
079            setContentPane(chartPanel);
080        }
081    
082        /**
083         * Returns a sample dataset.
084         * 
085         * @return The dataset.
086         */
087        private static CategoryDataset createDataset() {
088            
089            // row keys...
090            String series1 = "First";
091            String series2 = "Second";
092            String series3 = "Third";
093    
094            // column keys...
095            String category1 = "Category 1";
096            String category2 = "Category 2";
097            String category3 = "Category 3";
098            String category4 = "Category 4";
099            String category5 = "Category 5";
100    
101            // create the dataset...
102            DefaultCategoryDataset dataset = new DefaultCategoryDataset();
103    
104            dataset.addValue(1.0, series1, category1);
105            dataset.addValue(4.0, series1, category2);
106            dataset.addValue(3.0, series1, category3);
107            dataset.addValue(5.0, series1, category4);
108            dataset.addValue(5.0, series1, category5);
109    
110            dataset.addValue(5.0, series2, category1);
111            dataset.addValue(7.0, series2, category2);
112            dataset.addValue(6.0, series2, category3);
113            dataset.addValue(8.0, series2, category4);
114            dataset.addValue(4.0, series2, category5);
115    
116            dataset.addValue(4.0, series3, category1);
117            dataset.addValue(3.0, series3, category2);
118            dataset.addValue(2.0, series3, category3);
119            dataset.addValue(3.0, series3, category4);
120            dataset.addValue(6.0, series3, category5);
121            
122            return dataset;
123            
124        }
125        
126        /**
127         * Creates a sample chart.
128         * 
129         * @param dataset  the dataset.
130         * 
131         * @return The chart.
132         */
133        private static JFreeChart createChart(CategoryDataset dataset) {
134            
135            // create the chart...
136            JFreeChart chart = ChartFactory.createBarChart(
137                "Bar Chart Demo 1",       // chart title
138                "Category",               // domain axis label
139                "Value",                  // range axis label
140                dataset,                  // data
141                PlotOrientation.VERTICAL, // orientation
142                true,                     // include legend
143                true,                     // tooltips?
144                false                     // URLs?
145            );
146    
147            // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
148    
149            // set the background color for the chart...
150            chart.setBackgroundPaint(Color.white);
151    
152            // get a reference to the plot for further customisation...
153            CategoryPlot plot = (CategoryPlot) chart.getPlot();
154            plot.setBackgroundPaint(Color.lightGray);
155            plot.setDomainGridlinePaint(Color.white);
156            plot.setDomainGridlinesVisible(true);
157            plot.setRangeGridlinePaint(Color.white);
158    
159            // ******************************************************************
160            //  More than 150 demo applications are included with the JFreeChart
161            //  Developer Guide...for more information, see:
162            //
163            //  >   http://www.object-refinery.com/jfreechart/guide.html
164            //
165            // ******************************************************************
166            
167            // set the range axis to display integers only...
168            final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
169            rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
170    
171            // disable bar outlines...
172            BarRenderer renderer = (BarRenderer) plot.getRenderer();
173            renderer.setDrawBarOutline(false);
174            
175            // set up gradient paints for series...
176            GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 
177                    0.0f, 0.0f, new Color(0, 0, 64));
178            GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 
179                    0.0f, 0.0f, new Color(0, 64, 0));
180            GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 
181                    0.0f, 0.0f, new Color(64, 0, 0));
182            renderer.setSeriesPaint(0, gp0);
183            renderer.setSeriesPaint(1, gp1);
184            renderer.setSeriesPaint(2, gp2);
185    
186            CategoryAxis domainAxis = plot.getDomainAxis();
187            domainAxis.setCategoryLabelPositions(
188                    CategoryLabelPositions.createUpRotationLabelPositions(
189                            Math.PI / 6.0));
190            // OPTIONAL CUSTOMISATION COMPLETED.
191            
192            return chart;
193            
194        }
195        
196        /**
197         * Starting point for the demonstration application.
198         *
199         * @param args  ignored.
200         */
201        public static void main(String[] args) {
202            BarChartDemo1 demo = new BarChartDemo1("Bar Chart Demo 1");
203            demo.pack();
204            RefineryUtilities.centerFrameOnScreen(demo);
205            demo.setVisible(true);
206        }
207    
208    }