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| author | Keiron Liddle <keiron@apache.org> | 2002-11-07 08:15:01 +0000 |
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| committer | Keiron Liddle <keiron@apache.org> | 2002-11-07 08:15:01 +0000 |
| commit | 3380cea47cae28af43b45b8b037a6c5d897692af (patch) | |
| tree | c1eb3b2677b4ddeeae736fef1a61c7ec4ae31fc8 /src/documentation/content/xdocs/design/architecture.xml | |
| parent | 74348a5448f431b08dafe203405a20bf894d7976 (diff) | |
| download | xmlgraphics-fop-3380cea47cae28af43b45b8b037a6c5d897692af.tar.gz xmlgraphics-fop-3380cea47cae28af43b45b8b037a6c5d897692af.zip | |
converted design docs to forrest
needs updating
git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@195441 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'src/documentation/content/xdocs/design/architecture.xml')
| -rw-r--r-- | src/documentation/content/xdocs/design/architecture.xml | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/documentation/content/xdocs/design/architecture.xml b/src/documentation/content/xdocs/design/architecture.xml new file mode 100644 index 000000000..2adab8f1b --- /dev/null +++ b/src/documentation/content/xdocs/design/architecture.xml @@ -0,0 +1,63 @@ +<?xml version="1.0" standalone="no"?> +<!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V1.1//EN" "document-v11.dtd"> + +<document> + <header> + <title>Architecture</title> + <subtitle>Architecture information for FOP</subtitle> + <authors> + <person name="Arved Sandstrom" email=""/> + </authors> + </header> + + <body> + +<section> + <title>FOP Mechanics</title> + +<section> + <title>Introduction</title> +<p> +The overall process is controlled by <em>org.apache.fop.apps.Driver</em>. +This class handles the FO Tree building, renderers, output and logging. +</p> +<p> +The process in general is that the FO document is sent to the tree +builder via SAX events. This creates an FO Tree. The FO Tree is then +handled by the layout processor which converts the FO Tree into an area +tree. This area tree is then given to the renderer and the renderer converts +the area tree into a stream of data containing the output document. +</p> +</section> + +<section> + <title>Formatting Object Tree</title> +<p> +The class <em>org.apache.fop.fo.FOTreeBuilder</em> is responsible for +actually constructing the FO tree. The key SAX events used are </p> +<p><code>startElement()</code>,</p> +<p><code>endElement()</code> and <code>characters()</code>.</p> + +<p>All formatting objects derive from abstract class +<em>org.apache.fop.fo.FONode</em>. The other FO classes inherit from +<em>FONode</em> as follows:</p> + +</section> + +<section> + <title>Rendering</title> +<p> +This is a separate process. The <code>render()</code> method in +<em>Driver</em> is invoked (say, +by <em>CommandLine</em>) with the laid-out <em>AreaTree</em> and a +<em>PrintWriter</em> as arguments. +This actually calls the <code>render()</code> method in a specific implementation of +the <em>Renderer</em> interface, typically <em>PDFRenderer</em> or +<em>AWTRenderer</em>. +</p> +</section> + +</section> + </body> +</document> + |