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