Actually, this is so simple, I've created a patch. I'm hesitant to apply it without much testing with various PNGs for which I have no time right now. But maybe one of you can take a look. If it's good JAIImage and JimiImage could be similarly patched.
On 19.12.2006 23:01:36 Jeremias Maerki wrote: > It turns out the following revision is responsible for the regression: > http://svn.apache.org/viewvc?rev=424349&view=rev > > Putting the Commons codec before the ImageIO variant in ImageFactory is > a quick fix for this. I originally switched because of speed reasons but > obviously I didn't test PNGs with alpha channel. > > The reason why Martin's PNG doesn't work with the ImageIOImage class is > the lack of support for java.awt.Transparency.TRANSLUCENT. If it were a > BITMASK it would work. The same problem exists for JAIImage and > JimiImage, BTW. Again, this is something a complete redesign of the > image package would have addressed. It's on my higher priority list but > I still haven't got to it, yet. If someone wants to try to implement > that little code that is missing as a temporary fix, please do. It > shouldn't be difficult. You can maybe use XmlGraphicsCommonsImage for > hints. > > On 19.12.2006 20:30:35 Andreas L Delmelle wrote: > > On Dec 19, 2006, at 19:56, Peter wrote: > > > > > When working on the patch I certainly can not remember coming > > > anywhere close > > > to code that could have an influence on how png's get into the pdf. > > > > I was also a bit puzzled, since in the patch there are no explicit > > references to anything png-related (IIC, png-related stuff is already > > put in Commons for that matter, so it couldn't have been touched > > directly by the patch) > > > > OTOH, this was the only significant change to the codebase between > > 13.11 and now, so one can reasonably assume that the cause is in > > there somewhere... I'd expect something which has an impact on the > > interaction with the commons-lib? > > > > > > Cheers, > > > > Andreas > > > > Jeremias Maerki Jeremias Maerki
imageIOImageTransparencyPatch.txt
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