doc/lib/length-spec.html


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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>length-spec</title><link rel="stylesheet" type="text/css" href="../reference.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.1"><link rel="home" href="../index.html" title="DocBook XSL Stylesheets: Reference Documentation"><link rel="up" href="generallibrary.html" title="General Library Templates"><link rel="prev" href="length-units.html" title="length-units"><link rel="next" href="length-in-points.html" title="length-in-points"><link rel="copyright" href="copyright.html" title="License"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">length-spec</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="length-units.html">Prev</a> </td><th width="60%" align="center">General Library Templates</th><td width="20%" align="right"> <a accesskey="n" href="length-in-points.html">Next</a></td></tr></table><hr></div><div class="refentry" title="length-spec"><a name="length-spec"></a><div class="titlepage"></div>
<div class="refnamediv"><h2>length-spec</h2><p>
length-spec
 &#8212; Return a fully qualified length specification
</p></div>

<div class="refsect1" title="Description"><a name="id36258277"></a><h2>Description</h2>

<p>The <code class="function">length-spec</code> template returns the
qualified length from a dimension. If an unqualified length is given,
the <a href="../fo/default.units.html"><em class="parameter"><code>default.units</code></em></a> will be added to it.
</p>

<a name="length-spec.frag"></a><pre class="programlisting">
&lt;xsl:template name="length-spec"&gt;
  &lt;xsl:param name="length" select="'0pt'"&gt;&lt;/xsl:param&gt;
  &lt;xsl:param name="default.units" select="'px'"&gt;&lt;/xsl:param&gt;

  &lt;xsl:variable name="magnitude"&gt;
    &lt;xsl:call-template name="length-magnitude"&gt;
      &lt;xsl:with-param name="length" select="$length"&gt;&lt;/xsl:with-param&gt;
    &lt;/xsl:call-template&gt;
  &lt;/xsl:variable&gt;

  &lt;xsl:variable name="units"&gt;
    &lt;xsl:value-of select="substring($length, string-length($magnitude)+1)"&gt;&lt;/xsl:value-of&gt;
  &lt;/xsl:variable&gt;

  &lt;xsl:value-of select="$magnitude"&gt;&lt;/xsl:value-of&gt;
  &lt;xsl:choose&gt;
    &lt;xsl:when test="$units='cm'                     or $units='mm'                     or $units='in'                     or $units='pt'                     or $units='pc'                     or $units='px'                     or $units='em'"&gt;
      &lt;xsl:value-of select="$units"&gt;&lt;/xsl:value-of&gt;
    &lt;/xsl:when&gt;
    &lt;xsl:when test="$units = ''"&gt;
      &lt;xsl:value-of select="$default.units"&gt;&lt;/xsl:value-of&gt;
    &lt;/xsl:when&gt;
    &lt;xsl:otherwise&gt;
      &lt;xsl:message&gt;
        &lt;xsl:text&gt;Unrecognized unit of measure: &lt;/xsl:text&gt;
        &lt;xsl:value-of select="$units"&gt;&lt;/xsl:value-of&gt;
        &lt;xsl:text&gt;.&lt;/xsl:text&gt;
      &lt;/xsl:message&gt;
    &lt;/xsl:otherwise&gt;
  &lt;/xsl:choose&gt;
&lt;/xsl:template&gt;
</pre>

</div>
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