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Java > Open Source Codes > JChartsScriptlet


1 /*
2  * ============================================================================
3  * GNU Lesser General Public License
4  * ============================================================================
5  *
6  * JasperReports - Free Java report-generating library.
7  * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22  *
23  * JasperSoft Corporation
24  * 303 Second Street, Suite 450 North
25  * San Francisco, CA 94107
26  * http://www.jaspersoft.com
27  */
28
29
30 import java.awt.Color JavaDoc;
31 import java.awt.Paint JavaDoc;
32 import java.awt.image.BufferedImage JavaDoc;
33
34 import net.sf.jasperreports.engine.JRDefaultScriptlet;
35 import net.sf.jasperreports.engine.JRScriptletException;
36
37 import org.jCharts.axisChart.AxisChart;
38 import org.jCharts.chartData.AxisChartDataSet;
39 import org.jCharts.chartData.ChartDataException;
40 import org.jCharts.chartData.DataSeries;
41 import org.jCharts.properties.AreaChartProperties;
42 import org.jCharts.properties.AxisProperties;
43 import org.jCharts.properties.ChartProperties;
44 import org.jCharts.properties.LegendProperties;
45 import org.jCharts.types.ChartType;
46
47
48 /**
49  * @author Teodor Danciu (teodord@users.sourceforge.net)
50  * @version $Id: JChartsScriptlet.java 1229 2006-04-19 13:27:35 +0300 (Wed, 19 Apr 2006) teodord $
51  */
52 public class JChartsScriptlet extends JRDefaultScriptlet
53 {
54
55
56     /**
57      *
58      */
59     public void afterReportInit() throws JRScriptletException
60     {
61         try
62         {
63             AreaChartProperties areaChartProperties = new AreaChartProperties();
64
65             double[][] data = {{10, 15, 30, 53}, {6, 30, 10, 21}, {20, 25, 20, 8}};
66             Paint JavaDoc[] paints = {new Color JavaDoc( 0, 255, 0, 100 ), new Color JavaDoc( 255, 0, 0, 100 ), new Color JavaDoc( 0, 0, 255, 100 )};
67             String JavaDoc[] legendLabels = {"Games", "Events", "Players" };
68             AxisChartDataSet axisChartDataSet = new AxisChartDataSet(data, legendLabels, paints, ChartType.AREA, areaChartProperties);
69
70             String JavaDoc[] axisLabels = {"January", "March", "May", "June"};
71             DataSeries dataSeries = new DataSeries(axisLabels, "Months", "People", "Popular Events");
72             dataSeries.addIAxisPlotDataSet(axisChartDataSet);
73
74             ChartProperties chartProperties = new ChartProperties();
75             AxisProperties axisProperties = new AxisProperties();
76             axisProperties.setYAxisRoundValuesToNearest(0);
77             LegendProperties legendProperties = new LegendProperties();
78
79             AxisChart axisChart = new AxisChart(dataSeries, chartProperties, axisProperties, legendProperties, 500, 350);
80
81             BufferedImage JavaDoc bufferedImage = new BufferedImage JavaDoc(500, 350, BufferedImage.TYPE_INT_RGB);
82
83             axisChart.setGraphics2D(bufferedImage.createGraphics());
84             axisChart.render();
85
86             super.setVariableValue("ChartImage", bufferedImage);
87         }
88         catch(ChartDataException chartDataException)
89         {
90             throw new JRScriptletException(chartDataException);
91         }
92     }
93
94
95 }
96
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