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https://issues.apache.org/jira/browse/FOP-1801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luis Bernardo resolved FOP-1801.
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Resolution: Fixed
Fix Version/s: trunk
> [PATCH] conversion B&W GIF=>PDF creates PDF with colorspace RGB if FOP0.95
> and Gray if FOP0.20.5
> ------------------------------------------------------------------------------------------------
>
> Key: FOP-1801
> URL: https://issues.apache.org/jira/browse/FOP-1801
> Project: Fop
> Issue Type: Bug
> Components: awt renderer
> Affects Versions: 0.95
> Environment: Operating System: Linux
> Platform: Other
> Reporter: Isidora
> Priority: Blocker
> Fix For: trunk
>
> Attachments: fop.patch, test.fo, weather.gif, xgc.patch
>
>
> Even though the PDFs obtained with both FOP versions look and print OK, when
> the one created with 0.95 is pushed through the FAX system, the image
> obtained contains dotted areas that correspond to white areas in the PDF
> created with 0.20.5.
> I posted the question to FOP forum and Jeremias Maerki helped me research the
> issue. If the PDF with problems is manipulated by :
> changing /ColorSpace [/Indexed /DeviceRGB 1 <FFFFFF000000>]
> to:
> /ColorSpace [/Indexed /DeviceGray 1 <FF00>
> the dotted areas go back to be white areas. i.e. the problem is resolved by
> this change
> When I asked him if I could make this change in colorspace from inside my
> XSL-FO he responded:
> "If you want this kind of functionality, it has to be fixed in Java code
> first.If you want to give this a try, the place to fix this is:
> org.apache.fop.render.pdf.ImageRenderedAdapter.populateXObjectDictionary(PDFDictionary)
> There, a check has to be implemented to see if all palette entries are
> plain grayscale values (red, green and blue all the same) in which case
> /DeviceGray can be specified instead of /DeviceRGB. And of course, the
> palette entries need to be 8bit rather than 24bits then."
> My expertise in manipulating colors and graphics is not big enough for me to
> make changes to this code. So, I hope someone with more knowledge could fix
> this bug.
> Thank you
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