[xep-support] Re: odd/even pages and using data to tell if you share a back

[G. Ken Holman]

At 2012-08-17 17:45 -0500, Nathan Stenzel wrote:
>I need to be able to write an XSL template that will know when it is 
>on an odd
>or even page.....

There is no feedback channel from XSL-FO to XSLT, so you'll never know.

>or to have the FO know if it is allowed to share its back
>side of its paper based on data in the XML.
>
>Any advice?

In XSLT 1:

   <fo:page-sequence>
     <xsl:attribute name="master-reference">
       <xsl:choose>
         <xsl:when 
test="....something...">name_of_double_sided_master</xsl:when>
         <xsl:otherwise>name_of_single_sided_master</xsl:otherwise>
       </xsl:choose>
     </xsl:attribute>
     ...
   </fo:page-sequence>

>I was Thinking that it would be possible to add a marker to the top of a page
>to show it is odd or even and then use the marker to help decide these
>things,

You cannot inspect marker values and act on them.

>but not sure if that is really possible or if such projects like this
>are possible at all without making it a 2 pass system.

Have you considered what you could do with XEP's intermediate format?

I hope this helps.

. . . . . . . . . . . . Ken

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