Pascual Lorente created BATIK-1207:
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Summary: NPE with different PNGTranscoder.KEY_WIDTH,
PNGTranscoder.KEY_HEIGHT
Key: BATIK-1207
URL: https://issues.apache.org/jira/browse/BATIK-1207
Project: Batik
Issue Type: Bug
Components: SVG Rasterizer
Affects Versions: 1.9
Environment: Debian 9
SDK 1.8.0_151
Reporter: Pascual Lorente
Priority: Critical
Attachments: ehld.svg
I'm having a tough time with PNGTranscoder. I am rendering an SVG document into
a PNG image of different sizes. For that, I use a factor.
{code:java}
final float factor = 1.0f;
// Load document
final SAXSVGDocumentFactory DOCUMENT_FACTORY = new
SAXSVGDocumentFactory(XMLResourceDescriptor.getXMLParserClassName());
SVGDocument document = DOCUMENT_FACTORY.createSVGDocument("ehld.svg");
// Extract original height and width
final SVGSVGElement root = document.getRootElement();
final String viewBox =
root.getAttributes().getNamedItem("viewBox").getNodeValue();
final Scanner scanner = new Scanner(viewBox);
scanner.useLocale(Locale.UK);
float x = scanner.nextFloat();
float y = scanner.nextFloat();
float width = scanner.nextFloat();
float height = scanner.nextFloat();
// Set png width and height
final float w = width * factor;
final float h = height * factor;
final ImageTranscoder transcoder = new PNGTranscoder();
transcoder.addTranscodingHint(PNGTranscoder.KEY_WIDTH, w);
transcoder.addTranscodingHint(PNGTranscoder.KEY_HEIGHT, h);
// Export
final TranscoderInput input = new TranscoderInput(document);
final File file = new File("output.png");
final TranscoderOutput output = new TranscoderOutput(new
FileOutputStream(file));
transcoder.transcode(input, output);
{code}
For some factors, it works nicely, but there are some of them that crash with:
Enclosed Exception:
Unable to transform src image
at
org.apache.batik.transcoder.image.ImageTranscoder.transcode(ImageTranscoder.java:132)
at
org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(XMLAbstractTranscoder.java:142)
at
org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:156)
at visual.VisualTesting.test(VisualTesting.java:298)
at visual.VisualTesting.main(VisualTesting.java:64)
>From 0.1 to 2.0 (step 0.1) it does NOT work with 0.7, 1.3, 1.4, 1.5, 1.7.
When I remove the filter in the SVG document
(*style="filter:url(#selection-filter)"*, line 1188) problems dissapear.
Not sure if a bug or a misusage. Thanks
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