<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>custom.css.source</title><link rel="stylesheet" type="text/css" href="../reference.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="../index.html" title="DocBook XSL Stylesheets: Reference Documentation"><link rel="up" href="html.html" title="HTML"><link rel="prev" href="docbook.css.link.html" title="docbook.css.link"><link rel="next" href="generate.css.header.html" title="generate.css.header"><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">custom.css.source</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="docbook.css.link.html">Prev</a> </td><th width="60%" align="center">HTML</th><td width="20%" align="right"> <a accesskey="n" href="generate.css.header.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="custom.css.source"></a><div class="titlepage"></div>
<div class="refnamediv"><h2><span class="refentrytitle">custom.css.source</span></h2><p>
custom.css.source
— Name of a custom CSS input file
</p></div>
<div class="refsynopsisdiv"><h2>Synopsis</h2>
<a name="custom.css.source.frag"></a><pre class="programlisting"><xsl:param name="custom.css.source"></xsl:param></pre>
</div>
<div class="refsection"><a name="idp937088"></a><h2>Description</h2>
<p>The <a href="../html/custom.css.source.html"><em class="parameter"><code>custom.css.source</code></em></a>
parameter enables you to add CSS styles to DocBook's
HTML output.</p>
<p>The parameter
specifies the name of a file containing custom
CSS styles. The file must be a well-formed XML file that
consists of a single <code class="sgmltag-element">style</code> root
element that contains CSS styles as its text content.
For example:</p>
<pre class="programlisting"><?xml version="1.0"?>
<style>
h2 {
font-weight: bold;
color: blue;
}
...
</style>
</pre>
<p>The filename specified by the parameter
should have a <code class="literal">.xml</code>
filename suffix, although that is not required.
The default value of this parameter is blank.</p>
<p>If <a href="../html/custom.css.source.html"><em class="parameter"><code>custom.css.source</code></em></a> is not blank, then
the stylesheet takes the following actions.
These actions take place regardless of the value of
the <a href="../html/make.clean.html.html"><em class="parameter"><code>make.clean.html</code></em></a> parameter.</p>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<p>The stylesheet uses the XSLT <code class="literal">document()</code>
function to open the file specified by the parameter and
load it into a variable.</p>
</li><li class="listitem">
<p>The stylesheet forms an output pathname consisting of the
value of the <a href="../html/base.dir.html"><em class="parameter"><code>base.dir</code></em></a> parameter (if it is set)
and the value of <a href="../html/custom.css.source.html"><em class="parameter"><code>custom.css.source</code></em></a>,
with the <code class="literal">.xml</code> suffix stripped off.
</p>
</li><li class="listitem">
<p>The stylesheet removes the <code class="sgmltag-element">style</code>
wrapper element and writes just the CSS text content to the output file.</p>
</li><li class="listitem">
<p>The stylesheet adds a <a href="http://docbook.org/tdg5/en/html/link.html"><code class="sgmltag-element">link</code></a> element to the
HTML <code class="sgmltag-element">HEAD</code> element to reference this external CSS stylesheet.
For example:
</p><pre class="programlisting"><link rel="stylesheet" href="custom.css" type="text/css">
</pre><p>
</p>
</li></ol></div>
<p>If the <a href="../html/make.clean.html.html"><em class="parameter"><code>make.clean.html</code></em></a> parameter is nonzero
(the default is zero),
and if the <a href="../html/docbook.css.source.html"><em class="parameter"><code>docbook.css.source</code></em></a> parameter
is not blank (the default is not blank),
then the stylesheet will also generate a default CSS file
and add a <a href="http://docbook.org/tdg5/en/html/link.html"><code class="sgmltag-element">link</code></a> tag to reference it.
The <a href="http://docbook.org/tdg5/en/html/link.html"><code class="sgmltag-element">link</code></a> to the custom CSS comes after the
<a href="http://docbook.org/tdg5/en/html/link.html"><code class="sgmltag-element">link</code></a> to the default, so it should cascade properly
in most browsers.
If you do not want two <a href="http://docbook.org/tdg5/en/html/link.html"><code class="sgmltag-element">link</code></a> tags, and
instead want your custom CSS to import the default generated
CSS file, then do the following:
</p>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<p>Add a line like the following to your custom CSS source file:</p>
<pre class="programlisting">@import url("docbook.css")
</pre>
</li><li class="listitem">
<p>Set the <a href="../html/docbook.css.link.html"><em class="parameter"><code>docbook.css.link</code></em></a> parameter
to zero. This will omit the <a href="http://docbook.org/tdg5/en/html/link.html"><code class="sgmltag-element">link</code></a> tag
that references the default CSS file.</p>
</li></ol></div>
<p>If you set <a href="../html/make.clean.html.html"><em class="parameter"><code>make.clean.html</code></em></a> to nonzero but
you do not want the default CSS generated, then also set
the <a href="../html/docbook.css.source.html"><em class="parameter"><code>docbook.css.source</code></em></a> parameter to blank.
Then no default CSS will be generated, and so
all CSS styles must come from your custom CSS file.</p>
<p>You can use the <a href="../html/generate.css.header.html"><em class="parameter"><code>generate.css.header</code></em></a>
parameter to instead write the CSS to each HTML <code class="sgmltag-element">HEAD</code>
element in a <code class="sgmltag-element">style</code> tag instead of an external CSS file.</p>
</div>
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