com.lowagie.text.pdf.PdfPageEvent Maven / Gradle / Ivy
/*
* $Id: PdfPageEvent.java 3373 2008-05-12 16:21:24Z xlv $
*
* Copyright 2001, 2002 Paulo Soares
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* 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.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or 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.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* https://github.com/LibrePDF/OpenPDF
*/
package com.lowagie.text.pdf;
import com.lowagie.text.Document;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Rectangle;
/**
* Allows a class to catch several document events.
*
* Note: do not use Document.add() inside a page event.
*
* @author Paulo Soares ([email protected])
*/
public interface PdfPageEvent {
/**
* Called when the document is opened.
*
* @param writer the PdfWriter for this document
* @param document the document
*/
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
*/
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
*/
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
*/
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
*/
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
*/
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
*/
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
*/
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
*/
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
*/
void onSectionEnd(PdfWriter writer, Document document, float paragraphPosition);
/**
* Called when a Chunk with a generic tag is written.
*
* It is useful 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
*/
void onGenericTag(PdfWriter writer, Document document, Rectangle rect, String text);
}