3. Principes de base XSL/FO

Exemple 3-1: Un simple stylesheet XSLT + FO

• http://tecfa.unige.ch/guides/xml/cocoon/xslfo/hello-page.sxml
• http://tecfa.unige.ch/guides/xml/cocoon/xslfo/hello-page.sxml.text
• http://tecfa.unige.ch/guides/xml/cocoon/xslfo/hello-page-xslfo.xsl
• Note: L'exemple ci-dessus est composé d'un fichier XML et d'un fichier XSLT/XSL-FO et il est traité avec Cocoon 1
• Le code contient quelques instructions de traitement qu'on ignorera ici

A. Source XML

<page>

 <title>Hello Apache/FOP and Apache/Cocoon friends</title>

<content>

Here is some content. It should work with FOP 0.18 (and hopefully above).

It is totally uninteresting. It is totally uninteresting. ... </content> 

<content>

Here is some more content.

It is slightly uninteresting.  .... :)

</content> 

 <comment>Written by DKS/Tecfa 6/01</comment>

</page>

B. Feuille de style XSL/FO

<?xml version="1.0"?>

<xsl:stylesheet

  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

  xmlns:fo="http://www.w3.org/1999/XSL/Format" version="1.0" >

<!-- rule for the whole document: root element is page -->

<xsl:template match="page">

 <fo:root>

  <fo:layout-master-set>

  <!-- Definition of a single master page. It is simple (no headers etc.) -->

  <fo:simple-page-master 

			 master-name="first
" 

			 margin-left="2cm"  margin-right="2cm"

			 margin-bottom="0.5cm" margin-top="0.75cm"

			 page-width="21cm" page-height="29.7cm"

			 >

   <!-- required element body -->

   <fo:region-body/>

  </fo:simple-page-master>

 </fo:layout-master-set>

 <!-- Definition of a page sequence -->

 <fo:page-sequence 
master-name="first">

  <fo:flow 
flow-name="xsl-region-body"
 font-size="14pt" line-height="14pt">

    <xsl:apply-templates/>

  </fo:flow>  

 </fo:page-sequence> 

</fo:root>

</xsl:template>

<!-- A series of XSLT rules that produce fo:blocks to be inserted above -->

 <xsl:template match="page/title">

    <fo:block font-size="36pt" text-align="center" line-height="40pt" space-before="0.5cm" space-after="1.0cm">

    <xsl:apply-templates/></fo:block>

  </xsl:template>

 <xsl:template match="content">

    <fo:block text-align="justify"  space-before="0.5cm">

    <xsl:apply-templates/></fo:block>

  </xsl:template>

 <xsl:template match="comment">

    <fo:block font-size="12pt" text-align="start" space-before="0.7cm" font-style="italic">

    <xsl:apply-templates/></fo:block>

  </xsl:template>

</xsl:stylesheet>

C. Sequelette XSL-T/FO de base

<xsl:template match="page">

 <fo:root>

  <fo:layout-master-set>

  <!-- Definition of a single master page. It is simple (no headers etc.) -->

  <fo:simple-page-master 

			 master-name="first
"  >

   <!-- required element body -->

   <fo:region-body/>

  </fo:simple-page-master>

 </fo:layout-master-set>

 <!-- Definition of a page sequence -->

 <fo:page-sequence 
master-name="first">

  <fo:flow 
flow-name="xsl-region-body"
 font-size="14pt" line-height="14pt">

    <xsl:apply-templates/>

  </fo:flow>  

 </fo:page-sequence> 

</fo:root>

</xsl:template>

• Une règle XSLT qui définit la racine FO pour la racine XML