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From "Sergei Rodionov" <sergei.rodio...@axibase.com>
Subject rasterizer problem
Date Thu, 01 Jun 2006 14:55:02 GMT
Hello, 
 
In my server application I need to load an svg document on user request, parse it, modify
DOM and CSS styles and rasterize the svg document as jpeg.
It seems that I need to build a bridge context to enable dynamic DOM and CSS support.
It all works fine, but sometimes the code throws an NPE typical for cases when there is no
bridge context .
 
I looked at the GVTBuilder source  ($Id: GVTBuilder.java,v 1.30 2005/03/27 08:58:30 cam Exp
$) , found these lines.
 
        // <!> FIXME: TO BE REMOVED
        if (ctx.isDynamic()) {
            // register DOM listeners for dynamic support
            ctx.addDOMListeners();
        }
 
My environment JRE 1.4.2, Windows, batik 1.6
 
Thanks for any pointers!
 
======================================================
 
  String svgURI = new File(path).toURL().toString();
  SVGDOMImplementation domImpl = new SVGDOMImplementation();
  SAXDocumentFactory f = new SAXDocumentFactory(domImpl,
"org.apache.xerces.parsers.SAXParser");
  f.setValidating(false);
  GZIPInputStream zIn = new GZIPInputStream(new FileInputStream(path));
  Document res = f.createDocument("http://www.w3.org/2000/svg", "svg", svgURI, zIn);
    UserAgent userAgent = new  MyUserAgent();
   DocumentLoader loader = new DocumentLoader(userAgent);
   BridgeContext ctx = new BridgeContext(userAgent, loader);
   ctx.setDynamicState(BridgeContext.DYNAMIC);
   GVTBuilder builder = new GVTBuilder();
   GraphicsNode gvtRoot = builder.build(ctx, res);

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