| <HTML> |
| <TITLE>FOP Overview</TITLE> |
| <BODY> |
| <P>The main purpose of FOP is to render XSL-FO documents into a variety of |
| output formats, including PDF, text, MIF, Postscript, and others. This process |
| requires two conversions as the data moves through the following three |
| stages: |
| <OL> |
| <LI>XSL-FO document (input). This document should conform to the XSL |
| standard (currently version 1.0). It is a description of the general |
| formatting requirements of the document.</LI> |
| <LI>Area Tree document (intermediate). This document is a model of the |
| specific, paginated layout that fulfills the general requirements of the |
| input XSL-FO document, and conforms to the constraints of the XSL |
| standard. It is transitory.</LI> |
| <LI>Rendered document (output). This document implements a specific file |
| format to serialize the Area Tree document.</LI> |
| </OL> |
| |
| <P>As a convenience to users, FOP can also manage the following ancillary |
| processes:</P> |
| |
| <UL> |
| <LI> (upstream, external) conversion of a semantic XML document into an |
| XSL-FO document by invoking an XSLT transformation.</LI> |
| <LI> (downstream, internal) display of the modeled paginated document in |
| a viewer.</LI> |
| </UL> |
| |
| <P>To get an overview of the FOP process, begin with the class |
| <A HREF="org/apache/fop/apps/Driver.html">org.apache.fop.apps.Driver</A>.</P> |
| |
| <H3>Developer Information</H3> |
| <UL> |
| <LI>The current development platform is Java 1.3. There are minor |
| source code changes required to compile with Java 1.4. See the <A |
| HREF="http://xml.apache.org/fop/relnotes.html" TARGET="_blank">Release |
| Notes</A> for details.</LI> |
| <LI>For javadoc documentation that references external standards (such as |
| the W3C XSL standard), such standards will be opened in a different |
| browser instance. Following additional references to the same standard |
| will update the same browser, but you will not see that update unless that |
| browser window is open on your desktop -- in other words, if that browser |
| is minimized, it will look like nothing happened.</LI> |
| </UL> |
| |
| </BODY> |
| </HTML> |