[oXygen-user] mystery: content-height validation problem with XEP

Radu Coravu
Thu Aug 5 03:13:06 CDT 2010

Hi Robert,

For example if in a Docbook 5 XML file you have an image like:

<imagedata fileref="../lake.jpeg" scale="100" contentdepth="50"/>

in the generated FO file (which gets transformed to PDF) it gets 
transformed to:

<fo:external-graphic src="url(../lake.jpeg)" width="auto"
                             height="auto" content-width="auto" 

I tested with both Apache FOP and XEP 4.16 and they both accept the 
content-height with the value specified with "px" (and without the px 
appended as well).
Maybe you are using an older version of XEP?


Radu Coravu
<oXygen/>   XML Editor, Schema Editor and XSLT Editor/Debugger

On 7/31/2010 11:20 AM, Robert Nagle wrote:
> Hi, I have a weird problem and am flummoxed.
> I have oxygen 11.2 + xep + docbook 5.
> Up until now  I've had no problem rendering it with the XEP engine.
> Settings are right,  The docbook project validates according to
> Oxygen. However, if I try to do the usual transform to make a PDF from
> XEP, I get this enigmatic error without producing a PDF.
> Started: "C:\Program Files (x86)\XEP\xep.bat" -fo "I:\My
> Documents\work-related\myproject\index.xml_xslt" -pdf "I:\My
> Documents\work-related\myproject\myproject.pdf"
> (document [system-id file:/I:/My
> Documents/work-related/myproject/index.xml_xslt]
>    (validate
>      [error] Attribute 'content-height' cannot have a value of "px".
>      [validation total: 1 error]
> Parse error: Invalid XSL FO source 'file:/I:/My
> Documents/work-related/myproject/index.xml_xslt': 1 error found during
> validation
> Process ended with exit code: 0
> I have no idea what's going on. I understand that it's talking about
> FO (I sort of understand what it is). To my knowledge I have not
> specified content-height anywhere  in the xinclude files or the
> customization layer. I cannot find px anywhere.
> The PDF generates successfully if I switch the rendering engine to
> Apache FO, but that does not help.
> My customization layer is pretty basic (see below), and I have not
> changed anything recently. I realize I have not given you a lot of
> information here, but can  you  guess where the problem lies or how to
> solve it? I get the sense that the problem may lie with my images in
> my source xml, but I just don't know.
> Any guesses? Thanks.... (I have a deadline for Monday, so any guess
> would be appreciated).
> <?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
> xmlns="http://www.w3.org/1999/xhtml"    version="1.0">
>      <xsl:import
> href="http://docbook.sourceforge.net/release/xsl-ns/1.75.2/fo/docbook.xsl"
> />
>       <xsl:param name="xep.extensions" select="1"></xsl:param>
>      <xsl:param name="preferred.mediaobject.role">fo</xsl:param>
>      <xsl:param name="insert.xref.page.number">yes</xsl:param>
>      <xsl:param name="page.height">23.4cm</xsl:param>
>      <xsl:param name="page.width">15.6cm</xsl:param>
>      <xsl:param name="page.margin.inner">1.91cm</xsl:param>
>      <xsl:param name="page.margin.outer">1.27cm</xsl:param>
>        </xsl:stylesheet>

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