Hi,
I created a very simple SVG DOM (see code above).
If I serialize the DOM to a file and view the file
with squiggle its looks fine.
If I transcode the DOM to a png, tiff or jpeg file,
the result has the right dimensions but it's blank.
Actually only a transparent layer with the
PNGTranscoder, a white layer with the JPGTranscoder
and a black layer with the TIFFTranscoder. But in any
case I never get the actual drawing.
If I build the DOM from an URI instead of from
scratch, I get a correct result.
What did I missed?
--- java code ---
public static void main(String[] args) throws
Exception
{
final DOMImplementation impl =
SVGDOMImplementation.getDOMImplementation();
final String svgNS =
SVGDOMImplementation.SVG_NAMESPACE_URI;
final Document doc = impl.createDocument(svgNS,
"svg", null);
final Element root = doc.getDocumentElement();
root.setAttribute("width", "504");
root.setAttribute("height", "480");
final Element rect = doc.createElement("rect");
rect.setAttribute("x", "0");
rect.setAttribute("y", "0");
rect.setAttribute("width", "504");
rect.setAttribute("height", "480");
rect.setAttribute("fill", "yellow");
root.appendChild(rect);
// Save the dom to a file for verification
final Transformer tr =
TransformerFactory.newInstance().newTransformer();
tr.transform(new DOMSource(doc), new
StreamResult("/tmp/out/2.svg"));
// The actual rasterization
final Transcoder trc = new PNGTranscoder();
final int screenDpi = 72;
trc.addTranscodingHint(ImageTranscoder.KEY_WIDTH,
new Float(504));
trc.addTranscodingHint(ImageTranscoder.KEY_PIXEL_UNIT_TO_MILLIMETER,
new Float(25.4f / screenDpi));
final TranscoderInput in = new TranscoderInput(doc);
final TranscoderOutput out = new
TranscoderOutput(new BufferedOutputStream(new
FileOutputStream("/tmp/out/out.png")));
trc.transcode(in, out);
out.getOutputStream().flush();
out.getOutputStream().close();
System.out.println("done");
}
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