/// <summary>
/// Get the Area Tree from Antenna House Formatter
/// </summary>
/// <param name="inputStream">XSL:FO tree as ByteArryInputStream</param>
/// <param name="configFileName">FOP configuration file name: Setting file for Antenna House Formatter rendering</param>
/// <returns></returns>
protected XPathDocument GetAreaTrea(ByteArrayInputStream inputStream, string configFileName)
{
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
FOUserAgent userAgent = new FOUserAgent(FopFactory.newInstance());
FopFactoryConfigurator configurator = new FopFactoryConfigurator(userAgent.getFactory());
if (string.IsNullOrEmpty(configFileName) == false)
{
userAgent.getFactory().setUserConfig(configFileName);
}
Fop fop = userAgent.getFactory().newFop(MimeConstants.__Fields.MIME_FOP_AREA_TREE, userAgent, outStream);
TransformerFactory tf = new TransformerFactoryImpl();
Transformer transformer = tf.newTransformer();
Source src = new StreamSource(inputStream);
Result res = new SAXResult(fop.getDefaultHandler());
transformer.transform(src, res);
return(outStream.ToXPathDocument());
}