Peter Becker wrote:
[was: Re: Text rendering changes after upgrade to 1.5]
Jim Ley wrote:
"Peter Becker" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
But let's not play the blame game -- I don't care whose fault it is, I
just want the results to be good. At the moment I am not happy with the
looks of my website in IE -- which I rarely see myself but unfortunately
IE is still the most common browser, so I have to accomodate for that.
It seems to be somehow the combination of Batik's rendering of the SVG
into PNG with IE's rendering of the PNG onto the screen that causes the
problem -- most programs I tried display the PNG as I want it.
You might want to read Henri Sivonen's review:
http://www.hut.fi/u/hsivonen/png-gamma.html
Good reference, thanks for this -- it explains quite a lot. But my
conclusion from this article and this page linked from it:
http://www.hut.fi/u/hsivonen/png-gamma-test-results.html
is that I want to encode PNGs without gamma information. That would
break some Opera versions and some (all?) Safari versions, but (a) these
are way less important for me than IE and (b) it seems to be that it is
their implementation which is on the wrong side of things. Also it seems
that unless Batik does some big magic it can't really know for sure
which gamma value to use -- so attaching it to the PNGs is also on the
wrong side of things. Did I get that right?
Is there some option to get Batik not to encode gamma in PNGs? I
remember having hacked these bits of the code a while ago, but I think I
just tweaked the numbers. How do I get unlabeled PNGs from Batik?
I sent my previous response because it contained lots of useful information.
Currently Batik (in fact our PNG transcoder) will _always_ generate a gAMA
chunk. The code for this is the '.5' rounding fix I mentioned in my previous
note. You would need to add a new parameter to the PNGEncodeParam object
and then a new transcoder hint to the PNGTranscoder and then add it to the
command line handing in the rasterizer - to fully export it.
As I said in my other note Batik would probably accept a proper contribution
but generating broken PNG's is not something I will spend any time on.
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