Ansgar Radermacher created BATIK-1228:
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Summary: NPE in SVGGen not working due to non-registered image
writers
Key: BATIK-1228
URL: https://issues.apache.org/jira/browse/BATIK-1228
Project: Batik
Issue Type: Bug
Components: SVGGraphics2D, Utilities
Affects Versions: 1.9
Environment: Eclipse
Reporter: Ansgar Radermacher
There is an NPE in class ImageHandlerBase64 encoder in the 1.9.1 build for
Eclipse photon in the following code (which gets triggered by a "File->Save as
Image" in Papyrus).
ImageWriter writer =
ImageWriterRegistry.getInstance().getWriterFor("image/png");
writer.writeImage(buf, os);
...
No ImageWriter is registered for "image/png", i.e writer is null after the
assignment. The ImageIOPNGImageWriter (and others) from the batik codec package
are not "visible" for the class Service in utils which it used by the
ImageWriterRegistry to detect available writers.
This is due to a missing dependency from batik.util to batik.codec, as proposed
in [https://bz.apache.org/bugzilla/show_bug.cgi?id=44682] and
[https://stackoverflow.com/questions/16138850/batik-svggraphics2d-nullpointerexception-when-drawing-image].
However, this solution is not possible (at least not on Eclipse level), since
batik.codec also depends on batik.util, i.e. would introduce a dependency cycle.
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