[xep-support] Bug and/or Limitation in fx:flow-section

[Eliot Kimber]

In the context of creating an inside/outside, "duplex" document (which I 
seem to have working pretty well now), I'm having a problem with using 
rx:flow-section to interpose a two-column bit within the main document.

The behavior I'm getting may be unavoidable, but I hope not.

Here is my FO instance:

<?xml version="1.0" encoding="utf-8"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format"
   xmlns:axf="http://www.antennahouse.com/names/XSL/Extensions"
   xmlns:rx="http://www.renderx.com/XSL/Extensions" 
xmlns:xlink="http://www.w3.org/1999/xlink"
   xmlns:imsqti="http://www.imsproject.org/qti/" hyphenate="true" 
language="en"
   font-family="Times New Roman, serif" font-size="11.5pt" 
line-height="120%">
   <fo:layout-master-set>
     <fo:simple-page-master master-name="body-page-odd-first" 
page-height="11in" page-width="8.5in">
       <fo:region-body margin-left="0pc - (12pc - 4.5pc)" 
margin-right="10pc" margin-top="4.5pc"
         margin-bottom="3.5pc"/>
       <fo:region-before extent="4pc"/>
       <fo:region-after region-name="region-after-odd" extent="3.5pc" 
precedence="true"/>
       <fo:region-start extent="4.5pc"/>
       <fo:region-end region-name="region-end-first" extent="9pc"/>
     </fo:simple-page-master>
     <fo:simple-page-master master-name="body-page-odd" 
page-height="11in" page-width="8.5in">
       <fo:region-body margin-left="-0pc - (12.5pc - 4.5pc)" 
margin-right="6pc" margin-top="4.5pc"
         margin-bottom="3.5pc"/>
       <fo:region-before extent="4pc"/>
       <fo:region-after region-name="region-after-odd" extent="3.5pc" 
precedence="true"/>
       <fo:region-start extent="4.5pc"/>
       <fo:region-end extent="6pc"/>
     </fo:simple-page-master>
     <fo:simple-page-master master-name="body-page-even" 
page-height="11in" page-width="8.5in">
       <fo:region-body margin-left="5.75pc" margin-right="-0pc - (12.5pc 
- 4.5pc)" margin-top="4.5pc"
         margin-bottom="3.5pc"/>
       <fo:region-before region-name="region-before-even" extent="4pc"/>
       <fo:region-after region-name="region-after-even" extent="3.5pc" 
precedence="true"/>
       <fo:region-start extent="17pc"/>
       <fo:region-end extent="4pc"/>
     </fo:simple-page-master>
     <fo:page-sequence-master master-name="body-pages">
       <fo:repeatable-page-master-alternatives>
         <fo:conditional-page-master-reference 
master-reference="body-page-odd-first"
           page-position="first" odd-or-even="odd"/>
         <fo:conditional-page-master-reference 
master-reference="body-page-odd" odd-or-even="odd"/>
         <fo:conditional-page-master-reference 
master-reference="body-page-even" odd-or-even="even"/>
       </fo:repeatable-page-master-alternatives>
     </fo:page-sequence-master>
   </fo:layout-master-set>
   <fo:page-sequence master-reference="body-pages" 
initial-page-number="auto-odd">
     <fo:flow flow-name="xsl-region-body" start-indent="12.5pc" 
end-indent="12.5pc">
       <fo:block
           space-after="1pc"
         >Normal offset column.
         +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ ++++ 
++++++++++.
         +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ ++++ 
++++++++++.
       </fo:block>
       <fo:block text-align-last="justify"><fo:leader 
leader-pattern="rule"/></fo:block>
       <rx:flow-section column-count="2" column-gap="1.5pc" 
end-indent="0pt" color="blue">
         <fo:wrapper start-indent="0pt">
           <fo:block font-size="11pt" line-height="13pt" 
font-family="Times New Roman, serif">
             <fo:block font-weight="bold">Two-column content w/in an 
rx:flow-section.</fo:block>
             <fo:block space-before="1pc">
             +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ 
++++ ++++++++++.
               +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ 
++++ ++++++++++.
               +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ 
++++ ++++++++++.
               +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ 
++++ ++++++++++.
               +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ 
++++ ++++++++++.
               +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ 
++++ ++++++++++.
               +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ 
++++ ++++++++++.
               +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ 
++++ ++++++++++.
               +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ 
++++ ++++++++++.
             </fo:block>
           </fo:block>
         </fo:wrapper>
       </rx:flow-section>
         <fo:block text-align-last="justify"><fo:leader 
leader-pattern="rule"/></fo:block>
       <fo:block
         space-before="1pc"
         >Back to the normal offset column.
         +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ ++++ 
++++++++++.
         +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ ++++ 
++++++++++.
         +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ ++++ 
++++++++++.
         +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ ++++ 
++++++++++.
         +++++++++++ ++++++++++ +++++++++++ ++++ +++++++++++++ ++ ++++ 
++++++++++.
       </fo:block>
     </fo:flow>
   </fo:page-sequence>
</fo:root>


The presentation effect is that the flow-level start-indent is applied 
to both columns, which makes the second column too narrow. I can provide 
a PDF if necessary.

I think what I want to be able to do is to put rx:flow-section within a 
block-container, which would allow me to establish an isolated reference 
area. Also, if I could do this, I could so some other cool stuff that I 
currently can't do.

If I understand the docs, rx:flow-section must be a direct child of fo:flow.

Thanks,

Eliot
-- 
W. Eliot Kimber
Professional Services
Innodata Isogen
9390 Research Blvd, #410
Austin, TX 78759
(512) 372-8122

ekimber at innodata-isogen.com
www.innodata-isogen.com

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