1 <refentry xmlns="http://docbook.org/ns/docbook"
2 xmlns:xlink="http://www.w3.org/1999/xlink"
3 xmlns:xi="http://www.w3.org/2001/XInclude"
4 xmlns:src="http://nwalsh.com/xmlns/litprog/fragment"
5 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
6 version="5.0" xml:id="insert.olink.pdf.frag">
8 <refentrytitle>insert.olink.pdf.frag</refentrytitle>
9 <refmiscinfo class="other" otherclass="datatype">boolean</refmiscinfo>
12 <refname>insert.olink.pdf.frag</refname>
13 <refpurpose>Add fragment identifiers for links into PDF files</refpurpose>
17 <src:fragment xml:id="insert.olink.pdf.frag.frag">
18 <xsl:param name="insert.olink.pdf.frag" select="0"/>
22 <refsection><info><title>Description</title></info>
24 <para>The value of this parameter determines whether
25 the cross reference URIs to PDF documents made with
27 include fragment identifiers.
30 <para>When forming a URI to link to a PDF document,
31 a fragment identifier (typically a '#' followed by an
32 id value) appended to the PDF filename can be used by
33 the PDF viewer to open
34 the PDF file to a location within the document instead of
36 However, not all PDF files have id
37 values embedded in them, and not all PDF viewers can
38 handle fragment identifiers.
41 <para>If <parameter>insert.olink.pdf.frag</parameter> is set
42 to a non-zero value, then any olink targeting a
43 PDF file will have the fragment identifier appended to the URI.
44 The URI is formed by concatenating the value of the
45 <parameter>olink.base.uri</parameter> parameter, the
46 value of the <tag class="attribute">baseuri</tag>
47 attribute from the <tag class="element">document</tag>
48 element in the olink database with the matching
49 <tag class="attribute">targetdoc</tag> value,
50 and the value of the <tag class="attribute">href</tag>
51 attribute for the targeted element in the olink database.
52 The <tag class="attribute">href</tag> attribute
53 contains the fragment identifier.
56 <para>If <parameter>insert.olink.pdf.frag</parameter> is set
57 to zero (the default value), then
58 the <tag class="attribute">href</tag> attribute
59 from the olink database
60 is not appended to PDF olinks, so the fragment identifier is left off.
61 A PDF olink is any olink for which the
62 <tag class="attribute">baseuri</tag> attribute
63 from the matching <tag class="element">document</tag>
64 element in the olink database ends with '.pdf'.
65 Any other olinks will still have the fragment identifier added.