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Subject: Re: [docbook-apps] Novice questions (repost)

Bob Stayton
Sagehill Enterprises
DocBook Consulting

----- Original Message ----- 
From: "Mads Ipsen" <mpi@osc.kiku.dk>
To: <docbook-apps@lists.oasis-open.org>
Sent: Monday, January 15, 2007 6:21 AM
Subject: [docbook-apps] Novice questions (repost)

> Dear DocBook users,
> This is my second attempt at posting these questions; I believe that
> my first attempt ended up as a reply to a previous posting.
> If you believe that this forum is out-of-scope for the questions I
> raise, please let me know, and I'll try to find help elsewhere.
> First of all, these are real novice questions, but I hope some of you
> will have the time to provide some feedback to my questions:
> 1. Using the style sheet
>     /usr/share/xml/docbook/stylesheet/nwalsh/xhtml/docbook.xsl
>   DocBook generates html files where the whole string ass. with a
>   figure title gets formatted in bold. I prefer: Figure + number in
>   bold and the caption text in roman, eg.
>     <b>Figure 1</b>: Blah. blah.
>   Here's my approach for dealing with this from a user supplied style
>   sheet:
>  <xsl:template name="formal.object.heading">
>    ...
>    <p class="title">
>      <xsl:choose>
>        <xsl:when test="contains($title,'Figure')">
>          <b>
>            <xsl:value-of select="substring-before($title,'.')"/>
>          </b>:
>          <xsl:value-of select="substring-after($title,'.')"/>
>        </xsl:when>
>        <xsl:otherwise>
>          <xsl:value-of select="$title"/>
>        </xsl:otherwise>
>      </xsl:choose>
>    </p>
>  </xsl:template>
>  It works, but I am starting to choose a wrong track here?

This is a bit hazardous for two reasons: it selects the text based on the 
".", but a figure number might be 3.2., in which case it doesn't get it 
right. Also, using xsl:value-of removes any markup in the processed $title, 
so you could lose any subscript/superscript markup, internal italic, etc.

The object.title.markup mode used in formal.object.heading gets a gentext 
template from the locale collection and fills in the number and title. I 
would suggest customizing the gentext string for figure title to remove the 
title, and then using mode="title.markup" in this template to restore the 
title outside the <b>.  Something like this:

This part customizes the gentext template:

<xsl:param name="local.l10n.xml" select="document('')"/>
<l:i18n xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0";>
  <l:l10n language="en">
   <l:context name="title">
     <l:template name="figure" text="Figure&#160;%n.&#160;"/>

This is the customized formal.object.heading:

<xsl:template name="formal.object.heading">
  <xsl:param name="object" select="."/>
  <xsl:param name="title">
    <xsl:apply-templates select="$object" mode="object.title.markup">
      <xsl:with-param name="allow-anchors" select="1"/>

  <p class="title">
      <xsl:when test="self::figure">
          <xsl:copy-of select="$title"/>
        <xsl:apply-templates select="." mode="title.markup"/>
          <xsl:copy-of select="$title"/>


>  2. For the html representation of my documentation, I need to insert
>     a graphical header and the beginning and end of each sect1 <div>
>     to achive a rounded appearance of the block. Something along the
>     lines:
>       <div class="sect1" lang="en" xml:lang="en">
>         <div id="contentUpper">
>           <img src="images/main_center_header_660px.png" alt="" />
>         </div>
>         ...
>         <div id="contentLower">
>           <img src="images/main_center_footer_660px.png" alt="" />
>         </div>
>       </div>
>     It took me 5 min. to write a Python script that uses regular
>     expression for matching and inserting these items - but are there
>     a cleaner style sheet based solution? I tried fiddling with
>     <xsl:template match="sect1">
>     but that completely messes up the chunking.

Customizing the template for sect1 is the right way to go, but you need to 
pay careful attention to the sequence of xsl:imports used.  There are 
actually two templates matching on sect1. The original template in 
sections.xsl formats the section content.  The extra template in 
chunk-code.xsl handles putting the formatted content into a chunked file. 
Your customization messes up the latter process without affecting the 
former.  This reference describes how to set up a two-stage import process 
so you can change the formatting template without affecting the chunking 


>  3. At some time soon, I will have to start caring about print as
>     well, i.e. PDF reps. Do you have any suggestions of the
>     postprocessors that I should use (commercial or free). Its
>     imperative that they can handle MathML.
> Thanks for taking your time to read this. If you have any feedback,
> please let me know.
> Best, Mads
> ---------------------------------------------------------------------
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