As far as I understand I just have to extend org.jboss.seam.pdf.ui.UIRectangle or even org.jboss.seam.pdf.ui.UIImage. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4035462#4035462 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4035462