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Subject: RE: [docbook-apps] Using draft images with fop, and catalogs.

Thanks for the advice.
I realized that the XSL processor didn't open the graphic file but I was wondering whether, since the stylesheet writes out the FO file, maybe there was something in the stylesheet that might vary what gets written out for use by the FO processor.
I'll enquire on the FOP list about how to get it to use catalogs as I can't see anything in the documentation.

From: Bob Stayton [mailto:bobs@sagehill.net]
Sent: 04 February 2009 17:00
To: Kerry, Richard; Docbook Apps
Subject: Re: [docbook-apps] Using draft images with fop, and catalogs.

The XML catalog file is used when a file is actually opened for use. In the case of graphics in XSL-FO output, the DocBook stylesheet does not open the graphic files, the XSL-FO processor does.  So you need to  configure your XSL-FO processor to use your catalog file.  There is a similar issue for resolving the DTD reference that is in some SVG files.  There is a short example in my book for setting up a catalog in XEP, but it would be similar for FOP.
Bob Stayton
Sagehill Enterprises
----- Original Message -----
Sent: Wednesday, February 04, 2009 4:52 AM
Subject: [docbook-apps] Using draft images with fop, and catalogs.

I am using Saxon and FOP to generate PDF files from DocBook.  And I'm using a draft image.
My customized stylesheet for DocBook->FO includes a value for the parameter draft.watermark.image.  It is currently the full local path to the draft.png file that I am using (ie somethiing like C:/DocBook/docbook-xsl-1.74.0/images/draft.png)
I would like to change it to be a url (or is it a uri), probably using the catalog resolving mechanism that is available in Saxon using the -x, -y, -r, -u qualifiers. 
I notice that at the moment the filename value appears in the FO file in the form "url(images/drft.png)" when I set draft.watermark.image to "images/draft.png" in my custom xsl file.  Thus I presume that the stylesheet is just copying over the parameter value and putting it in "url()".
Can someone advise how to go about doing this.  Do I need to tell the XSL stylesheet to change the format of what it inserts in the FO ?  Or do I need to tell FOP that it's a URL/URI and to use the resolver ?

Richard Kerry
Colledia Control Engineer
Siemens IT Solutions and Services Ltd

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