Hi,

I have made a quick'n dirty patch to fop to add the following command to
each page section:

/Group << /S /Transparency /I true /CS /DeviceRGB>>

This solves the problem I had with transparent svg images, and I think
this is the same problem as the bug #45809. It would be nice if a fop
developper could take a look at this. It's an old bug that makes the pdf
documents look wrong, definitely not a minor bug for me.

Thanks,
regis


Le 26/02/2011 14:35, Tavmjong Bah a écrit :
> On Sat, 2011-02-26 at 11:51 +0100, Régis Fénéon wrote:
>> Hello,
>>
>> I use fop to convert docbook documents to pdf. I have some issues when a
>> document includes a svg image that contains a transparent color gradient:
>> - the colors of the image and the other parts of the page are wrong, it
>> looks like a different color space is used,
>> - this problem occurs not only on the page that contains the image, but
>> several pages before and after the image,
>> - the rest of the document has the correct colors.
>> The problem disappears if I modify the svg image to use an fully opaque
>> gradient.
>>
>> Versions: FOP 1.0, JRE 1.6.0_20, Windows 7 64-bit
> I had a similar problem with PNGs, JPGs, and some SVGs when viewing
> files using Acroread on Linux and to a lesser extent with Acroread on
> Windows XP (Evince got the colors correct). By default, PDF uses
> DeviceCMYK when you probably want DeviceRGB for compositing a page with
> an SVG. I wrote a little script that goes through the PDF file and adds:
>
>       /Group << /S /Transparency /I true /CS /DeviceRGB>>
>
> after each /Page (I found this workaround on the bmeps web site). I then
> ran the PDF file through pdftk to fix the references. This fixed the
> problem for me. Check the fop-users archives for September 2009 for more
> details.
>
>                                       Tav
>
>
>
>
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