/* * $Id: PdfPageEvent.java,v 1.23 2002/07/09 11:28:24 blowagie Exp $ * $Name: $ * * Copyright 2001, 2002 Paulo Soares * * * The Original Code is 'iText, a free JAVA-PDF library'. * * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie. * All Rights Reserved. * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved. * * Contributor(s): all the names of the contributors are added in the source code * where applicable. * * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. * * * If you didn't download this code from the following link, you should check if * you aren't using an obsolete version: * http://www.lowagie.com/iText/ */ package com.lowagie.text.pdf; import com.lowagie.text.Document; import com.lowagie.text.Rectangle; import com.lowagie.text.Paragraph; /** * Allows a class to catch several document events. *

* Note: do not use Document.add() inside a page event. * * @author Paulo Soares (psoares@consiste.pt) */ public interface PdfPageEvent { /** * Called when the document is opened. * * @param writer the PdfWriter for this document * @param document the document */ public void onOpenDocument(PdfWriter writer, Document document); /** * Called when a page is initialized. *

* Note that if even if a page is not written this method is still * called. It is preferable to use onEndPage to avoid * infinite loops. * * @param writer the PdfWriter for this document * @param document the document */ public void onStartPage(PdfWriter writer, Document document); /** * Called when a page is finished, just before being written to the document. * * @param writer the PdfWriter for this document * @param document the document */ public void onEndPage(PdfWriter writer, Document document); /** * Called when the document is closed. *

* Note that this method is called with the page number equal * to the last page plus one. * * @param writer the PdfWriter for this document * @param document the document */ public void onCloseDocument(PdfWriter writer, Document document); /** * Called when a Paragraph is written. *

* paragraphPosition will hold the height at which the * paragraph will be written to. This is useful to insert bookmarks with * more control. * * @param writer the PdfWriter for this document * @param document the document * @param paragraphPosition the position the paragraph will be written to */ public void onParagraph(PdfWriter writer, Document document, float paragraphPosition); /** * Called when a Paragraph is written. *

* paragraphPosition will hold the height of the end of the paragraph. * * @param writer the PdfWriter for this document * @param document the document * @param paragraphPosition the position of the end of the paragraph */ public void onParagraphEnd(PdfWriter writer,Document document,float paragraphPosition); /** * Called when a Chapter is written. *

* position will hold the height at which the * chapter will be written to. * * @param writer the PdfWriter for this document * @param document the document * @param paragraphPosition the position the chapter will be written to * @param title the title of the Chapter */ public void onChapter(PdfWriter writer,Document document,float paragraphPosition, Paragraph title); /** * Called when the end of a Chapter is reached. *

* position will hold the height of the end of the chapter. * * @param writer the PdfWriter for this document * @param document the document * @param paragraphPosition the position the chapter will be written to */ public void onChapterEnd(PdfWriter writer,Document document,float paragraphPosition); /** * Called when a Section is written. *

* position will hold the height at which the * section will be written to. * * @param writer the PdfWriter for this document * @param document the document * @param paragraphPosition the position the section will be written to * @param depth the number depth of the section * @param title the title of the section */ public void onSection(PdfWriter writer,Document document,float paragraphPosition, int depth, Paragraph title); /** * Called when the end of a Section is reached. *

* position will hold the height of the section end. * * @param writer the PdfWriter for this document * @param document the document * @param paragraphPosition the position the section will be written to */ public void onSectionEnd(PdfWriter writer,Document document,float paragraphPosition); /** * Called when a Chunk with a generic tag is written. *

* It is usefull to pinpoint the Chunk location to generate * bookmarks, for example. * * @param writer the PdfWriter for this document * @param document the document * @param rect the Rectangle containing the Chunk * @param text the text of the tag */ public void onGenericTag(PdfWriter writer, Document document, Rectangle rect, String text); }