<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
<section id="sec-covers">
<title>Book Covers</title>

<para>Since version 0.3.10 dblatex provides a basic support for page-size
covers, when covers are defined as images to insert at the beginning of the
document (front cover), or at the very end of the document (back cover).</para>

<para>To specify a cover, set in the book information element, 
<sgmltag>info</sgmltag> or <sgmltag>bookinfo</sgmltag>, the images to use in
some <sgmltag>cover</sgmltag> elements (DocBook 5) or in
<sgmltag>mediaobject</sgmltag> with role set to <literal>cover</literal>
(DocBook 4).</para>

<para>If two covers are specified, it is assumed that the first one is for the
front cover, and the second one for the back cover. You can play with standard
<sgmltag>imagedata</sgmltag> width or depth attributes to ensure that the image
is sized to fit the page covers.</para>

<para>Here are two examples:
<example><title>DocBook 5 Front and Back Covers</title>
<programlisting language="XML"><![CDATA[<book>
 <info>
   ...
   <cover>
     <mediaobject>
       <imageobject>
         <imagedata fileref="cover-front-72dpi.png"
                    format="PNG" depth="100%" width="100%" align="left"/>
       </imageobject>
     </mediaobject>
   </cover>
   <cover>
     <mediaobject>
       <imageobject>
         <imagedata fileref="cover-back-72dpi.png"
                    format="PNG" depth="100%" width="100%" />
       </imageobject>
     </mediaobject>
   </cover>
 </info>
 ...
</book>]]></programlisting>
</example>
<example><title>DocBook 4 Front Cover</title>
<programlisting language="XML"><![CDATA[<book>
 <bookinfo>
   ...
   <mediaobject role="cover">
     <imageobject role="front-large">
       <imagedata fileref="cover-front-72dpi.png" format="PNG" width="100%" />
     </imageobject>
     <imageobject role="front">
       <imagedata fileref="cover-front-10dpi.png" format="PNG" width="444" />
     </imageobject>
     <imageobject role="front-small">
       <imagedata fileref="cover-front-10dpi.png" format="PNG" width="444" />
     </imageobject>
     <imageobject role="thumbnail">
       <imagedata fileref="cover-front-10dpi.png" format="PNG" width="444" />
     </imageobject>
   </mediaobject>
   ...
 </bookinfo>
 ...
</book>]]></programlisting>
</example>
</para>

<para>Note that in DocBook 4, <command>dblatex</command> filters on the same
roles for <sgmltag>mediaobject</sgmltag> (<literal>cover</literal>) or for
<sgmltag>imageobject</sgmltag> (<literal>front-large</literal>) than
the DocBook Project does when it implement covers in epub format.</para>

<para><command>dblatex</command> defines default templates 
<literal>front.cover</literal> and <literal>back.cover</literal> to implement
covers through images, but you can overwrite them to create your own
method to build covers.</para>

</section>