Re: [docbook-apps] Table column proportional values

["Bob Stayton" <bobs@sagehill.net>]

I also find this behavior a bit odd.  It is not accidental, as there is a specific bit 
of code that turns off column-width when set to 1:

<xsl:if test="$colwidth != 'proportional-column-width(1)'">
  <xsl:attribute name="column-width">
    <xsl:value-of select="$colwidth"/>
  </xsl:attribute>
</xsl:if>

The $colwidth variable is computed, and if its value is "proportional-column-width(1)" 
then no column-width attribute is output at all!  I have no idea why this step is 
taken.  This bit of code has existed in the table.xsl file since it was first created 
by Norm Walsh in 2001.  It may have been a limitation of early FO processors, but it 
certainly isn't desirable behavior now.

Please file a bug report on SourceForge for this item.

Bob Stayton
Sagehill Enterprises
bobs@sagehill.net


----- Original Message ----- 
From: deannelson@aol.com
To: docbook-apps@lists.oasis-open.org
Sent: Wednesday, May 12, 2010 4:42 PM
Subject: [docbook-apps] Table column proportional values


Hello everyone,

I started paying attention to the warning messages that FOP puts out and discovered an 
issue in one of my tables. It appears that the 'colwidth' attribute is a bit touchy 
with the values that it gets. If a value is specified as "1*" it will not generate the 
proportional XSL-FO code that it needs and then out puts a message:



WARNING: table-layout="fixed" and column-width unspecified => falling back to 
proportional-column-width(1) (See position 560:47)

This in itself is not a big problem, but when tracking down why it did that, the 
1.75.2 version of the stylesheets emits some code that doesn't seem right. I'm using 
XSLTPROC but I get the same results with Saxon 6.5.5 and without any customization 
layer.

Example 1:
                <colspec colname="c1" colwidth="1*" align="left"/>
                <colspec colname="c2" colwidth="2*" align="left"/>
                <colspec colname="c3" colwidth="2*" align="left"/>

produces in the FO file:
          <fo:table-column column-number="1"/>
          <fo:table-column column-number="2" 
column-width="proportional-column-width(2)"/>
          <fo:table-column column-number="3" 
column-width="proportional-column-width(2)"/>

and thus produces the warning. Whereas changing the '1*' to '3*' in the first column 
produces no warning.

Example 2:
                <colspec colname="c1" colwidth="3*" align="left"/>
                <colspec colname="c2" colwidth="2*" align="left"/>
                <colspec colname="c3" colwidth="2*" align="left"/>

produces in the FO  file:
          <fo:table-column column-number="1" 
column-width="proportional-column-width(3)"/>
          <fo:table-column column-number="2" 
column-width="proportional-column-width(2)"/>
          <fo:table-column column-number="3" 
column-width="proportional-column-width(2)"/>

Obviously the work around is to refrain from using '1*' in our tables but that would 
be a pain. Is this an error in the stylesheets or my thinking/processing?

Regards,
Dean Nelson