Hi Jeremias,

I am quite interested in this feature and just tried it out. Seems to work for 
a lot of cases, but I ran into an issue which I guess might interest you.

If I attempt to render

<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format";>
        <fo:simple-page-master master-name="Page" page-width="25cm" 
            <fo:region-body region-name="Body" />
    <fo:page-sequence master-reference="Page">
        <fo:flow flow-name="Body">
src="../Temp_PDF_in_PDF/src/documentation/content/xdocs/dev/svg/images.pdf" />

Where the images.pdf is the images.pdf that one finds after building fop, the 
resulting pdf seems to be corrupt.

Enjoy your vacation, or, more likely, I hope you enjoyed your vacation,



> -----Original Message-----
> From: Jeremias Maerki [mailto:[EMAIL PROTECTED]
> Sent: Monday, August 06, 2007 5:06 PM
> To: fop-dev@xmlgraphics.apache.org
> Subject: PDF in PDF (experimental)
> As you will have seen, I've uploaded some changes into a temporary
> branch. I've not committed them to Trunk since I've done some changes at
> the lowest level in the PDF library and I've not done very extensive
> tests (encryption etc.). I don't want to destabilize the 0.95 release in
> case I made a mistake somewhere. If anyone does more extensive tests and
> feels that the changes can safely be merged back into Trunk, feel free.
> Otherwise, I'll look into it after my holidays.
> I've created "PDF in PDF" support in two parts:
> 1. Changes to core FOP, mainly the PDF library and infrastructure for
> the image package and the PDF renderer. (revision 563142)
> 2. A fully separate package with only the PDF-in-PDF code (with a
> dependency on a specially patched PDFBox (didn't work out of the box for
> me). I have yet to send a patch to Ben for PDFBox.
> Part 2 can be downloaded from my website:
> http://www.jeremias-maerki.ch/download/fop/pdf-images/
> What this enables is using PDF files as the "src" attribute of an
> fo:external-graphic when doing PDF output. This does not work for any
> other renderer. If anyone wants to experiment with it, please find more
> details/limitations in the README file in the distribution. Feedback is
> welcome. The code is to be considered experimental!
> The reason why I provide a separate package for the plug-in is that I
> needed to use PDFBox to parse the PDF. Of course, I can't just add a new
> dependency to FOP without consulting the team.
> I wanted to get this off my machine before I finally go off-line (long
> holidays until the end of September).
> Have fun,
> Jeremias Maerki
> On 06.08.2007 16:03:02 jeremias wrote:
> > Author: jeremias
> > Date: Mon Aug  6 07:03:00 2007
> > New Revision: 563142
> >
> > URL: http://svn.apache.org/viewvc?view=rev&rev=563142
> > Log:
> > Preparations for supporting "PDF in PDF" (PDF file as "src" attribute
> for fo:external-graphic).
> >
> > Changes in the PDF library:
> > - Support all basic PDF objects as generic classes.
> > - Reworked some of the PDF classes to use the new generic classes
> instead of writing to StringBuffers everywhere (less code, less error-
> prone in the long run).
> > - Finished Form XObject support.
> > - Manage Image XObjects together with Form XObjects in PDFDocument
> > - Tweaked the filters so externally applied filters can more easily be
> handled.
> >
> > Changes to image package:
> > - Added a very simple and temporary dynamic registration for image
> implementations (in order to plug in external image implementations)
> > ("temporary" since the image package redesign is still on the task
> list for this year)
> >
> > Changes to the PDF Renderer:
> > - Added a PDFImageHandler interface which can be used to create
> arbitrary XObjects (in the case of PDF-in-PDF: Form XObjects).

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