KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > krysalis > jcharts > encoders > SVGEncoder


1 /***********************************************************************************************
2  * Copyright 2002 (C) Nathaniel G. Auvil. All Rights Reserved.
3  *
4  * Redistribution and use of this software and associated documentation ("Software"), with or
5  * without modification, are permitted provided that the following conditions are met:
6  *
7  * 1. Redistributions of source code must retain copyright statements and notices.
8  * Redistributions must also contain a copy of this document.
9  *
10  * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
11  * conditions and the following disclaimer in the documentation and/or other materials
12  * provided with the distribution.
13  *
14  * 3. The name "jCharts" or "Nathaniel G. Auvil" must not be used to endorse or promote
15  * products derived from this Software without prior written permission of Nathaniel G.
16  * Auvil. For written permission, please contact nathaniel_auvil@users.sourceforge.net
17  *
18  * 4. Products derived from this Software may not be called "jCharts" nor may "jCharts" appear
19  * in their names without prior written permission of Nathaniel G. Auvil. jCharts is a
20  * registered trademark of Nathaniel G. Auvil.
21  *
22  * 5. Due credit should be given to the jCharts Project (http://jcharts.sourceforge.net/).
23  *
24  * THIS SOFTWARE IS PROVIDED BY Nathaniel G. Auvil AND CONTRIBUTORS ``AS IS'' AND ANY
25  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
27  * jCharts OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
28  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,STRICT LIABILITY, OR TORT
31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
32  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
33  ************************************************************************************************/
34
35 package org.krysalis.jcharts.encoders;
36
37
38 import org.apache.batik.dom.GenericDOMImplementation;
39 import org.apache.batik.svggen.SVGGraphics2D;
40 import org.krysalis.jcharts.Chart;
41 import org.krysalis.jcharts.chartData.ChartDataException;
42 import org.krysalis.jcharts.imageMap.ImageMapNotSupportedException;
43 import org.krysalis.jcharts.properties.PropertyException;
44 import org.w3c.dom.DOMImplementation JavaDoc;
45 import org.w3c.dom.Document JavaDoc;
46
47 import java.io.IOException JavaDoc;
48 import java.io.OutputStream JavaDoc;
49 import java.io.OutputStreamWriter JavaDoc;
50 import java.io.Writer JavaDoc;
51
52
53 /*************************************************************************************
54  * This class REQUIRES the Apache XML Batik libraries to run.
55  *
56  * @author Nathaniel Auvil
57  * @version $Id: SVGEncoder.java,v 1.2 2003/05/26 13:40:21 nathaniel_auvil Exp $
58  ************************************************************************************/
59 public class SVGEncoder
60 {
61
62     /******************************************************************************************
63      *
64      *
65      ******************************************************************************************/
66     private SVGEncoder() throws Exception JavaDoc
67     {
68         throw new Exception JavaDoc( "No need to create an instance of this class!" );
69     }
70
71
72     /******************************************************************************************
73      * Encodes the Chart to an OutputStream which can be a file or any other OutputStream
74      * implementation.
75      *
76      * @param chart
77      * @param outputStream
78      * @throws ChartDataException
79      * @throws PropertyException
80      * @throws IOException
81      *******************************************************************************************/
82     public static void encode( Chart chart, OutputStream JavaDoc outputStream ) throws ChartDataException, PropertyException, IOException JavaDoc
83     {
84         //---hopefully eliminate support requests asking about this...
85 if( chart.getImageMap() != null )
86         {
87             throw new ImageMapNotSupportedException( "HTML client-side image maps are not supported by the SVG format." );
88         }
89
90         //---Get a DOMImplementation
91 DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
92
93         //---Create an instance of org.w3c.dom.Document
94 Document JavaDoc document = domImpl.createDocument( null, "svg", null );
95
96         //---Create an instance of the SVG Generator
97 SVGGraphics2D svgGenerator = new SVGGraphics2D( document );
98
99         chart.setGraphics2D( svgGenerator );
100         chart.render();
101
102         Writer JavaDoc writer = new OutputStreamWriter JavaDoc( outputStream, "UTF-8" );
103         svgGenerator.stream( writer, false );
104
105         writer.flush();
106         writer.close();
107     }
108 }
109
Popular Tags