Upgrade the Apache FOP rendering engine from .20.5 to .92
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Key: OFBIZ-311
URL: http://issues.apache.org/jira/browse/OFBIZ-311
Project: OFBiz (The Open for Business Project)
Issue Type: Improvement
Components: framework
Environment: Windows / Java 1.5
Reporter: John Martin
Working on upgrading the FOP (http://xmlgraphics.apache.org/fop/) rendering
engine used in ofBiz to generate PDF documents.
We had the need to use more advanced layout functionality than what 0.20.5
offered. Version 0.92 offers a lot of improvements. From the apache site:
* More than half of the codebase has been rewritten over the last three years.
The code is relatively new and possibly not as stable as version 0.20.5 in
every regard. But the code is quickly approaching production level, especially
when you're happy with only PDF and PostScript output.
* The API of FOP has changed considerably and is not backwards-compatible with
version 0.20.5.
* There have been changes to the end-user API between 0.91 beta and 0.92 beta.
With version 0.92, the API is now considered stable. Some methods have been
deprecated and will be removed with the next release. If you upgrade from 0.91
beta, you will need to adjust your Java code.
* The new code is much more strict about the interpretation of the XSL-FO 1.0
specification. Things that worked fine in version 0.20.5 might start to produce
warnings or even errors now. FOP 0.20.5 contains many bugs which have been
corrected in the new code.
NOTE:
- The last bullet point was accurate and some of the fo.ftl templates were
broken (i.e. invoicePDF.fo.ftl). <fo:table-row> must contain
<fo:table-column> and <fo:table-column> must contain <fo:block>.
- Rendering of images are now done at their "natural" size unless you use the
properties content-width or content-height. The height and width attributes
don't seem to have any effect on the rendering.
- Some of the XSL-FO documentation that I read also recommended avoiding the
use of 'px' (pixels) to define the size of objects since pixels is a screen
resolution and may not translate well to other devices. They recommend using
mm or in for dimensions.
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