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From Ozhan Hassan <oz...@io.mds.rmit.edu.au>
Subject Problem rendering SVG
Date Mon, 05 May 2003 07:23:50 GMT

I am experiencing some a weird problem while trying to render some SVG.
I have a simple java program which reads in an XML file and an XSLT
stylesheet (containing some SVG) and render it out to PDF. What happens is
my terminal just frezzes, and I can't kill the process or do anything
else. The process only hangs when I run my application, i.e. if I run fop
from the command line passing it the XSLT with the SVG, it works fine.

Here is SVG from the XSLT style sheet:

    <xsl:template name="DisplaySvg">
            <svg:svg xmlns:svg="http://www.w3.org/2000/svg" 
            width = "300" height="200" viewBox="0 0 300 200" 
              <svg:g style="fill:white; stroke:#000000">
                 <svg:line x1="0" y1="200" x2="0" y2="0"/>
                 <svg:line x1="0" y1="200" x2="200" y2="200"/>
                 <svg:rect x="10" y="150" width="20" height="50" 
                    style="fill:blue; stroke:#000000"/>
                 <svg:rect x="40" y="170" width="20" height="30" 
                    style="fill:black; stroke:#000000"/>
                 <svg:rect x="70" y="100" width="20" height="100" 
                    style="fill:green; stroke:#000000"/>
                 <svg:rect x="100" y="20" width="20" height="180" 
                    style="fill:yellow; stroke:#000000"/>
                 <svg:rect x="130" y="150" width="20" height="50" 
                    style="fill:red; stroke:#000000"/>


The my java application which does what I explained above is:

import java.io.*;

// FOP libraries
import org.apache.fop.apps.Driver;
import org.apache.fop.apps.Version;
import org.apache.fop.messaging.MessageHandler;

import org.xml.sax.InputSource;
import org.apache.fop.apps.FOPException;

import org.apache.avalon.framework.logger.ConsoleLogger;  
import org.apache.avalon.framework.logger.Logger; 

import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import javax.xml.transform.sax.*;

class RenderingEngineXsltSvg
    // number of PDFs to be generated
    static final int OUTPUT_SIZE = 1;
    static final String INPUT_XML = "statement.xml";
    static final String INPUT_XSLT = "toXslFoSVG.xslt";
    static final String INPUT_DIR = "../../tmp/input/";
    static final String OUTPUT_DIR = "../../tmp/output/";

    public static void main(String args[])
            // only create the Transformer which reads the XSLT once
            Transformer transformer = TransformerFactory.newInstance()
                .newTransformer(new StreamSource(INPUT_DIR + INPUT_XSLT));
            for(int i = 1; i <= OUTPUT_SIZE; i++)
                String fileName = INPUT_XML;
                int fileLength = fileName.length();
                fileName = fileName.substring(0, fileLength - 4);
                String outFileName = OUTPUT_DIR + fileName + i + ".pdf";
                    Driver driver = new Driver();
                    Logger logger = new

                        StreamSource(INPUT_DIR + INPUT_XML),
                        new SAXResult(driver.getContentHandler()));

                System.out.println("***** GENERATED PDF: " + i + "
        catch (javax.xml.transform.TransformerConfigurationException ex)
            System.err.println("Exception: " + ex.toString());
        catch (javax.xml.transform.TransformerException ex)
            System.err.println("Exception: " + ex.toString());
        catch (IOException ex)
            System.err.println("IO Exception: " + ex.toString());

        // Everything is OK - exit


Any help would be appreciated.


Ozhan Hassan
Multimedia Database Systems
RMIT University
Email: ozhan@mds.rmit.edu.au
Phone: 9925 4118

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