com.itextpdf.text.pdf.PdfPageEventHelper Maven / Gradle / Ivy
/*
* $Id: 3733e61c02910234e42d6b825cbe199156379ae9 $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2016 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.text.pdf;
import com.itextpdf.text.Document;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Rectangle;
/**
* Helps the use of PdfPageEvent by implementing all the interface methods.
* A class can extend PdfPageEventHelper and only implement the
* needed methods.
*
* Note: do not use Document.add() inside a page event.
* @author Paulo Soares
*/
public class PdfPageEventHelper implements 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 position the position of the end of the chapter.
*/
public void onChapterEnd(PdfWriter writer,Document document,float position) {
}
/**
* 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 position the position of the end of the section
*/
public void onSectionEnd(PdfWriter writer,Document document,float position) {
}
/**
* 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
*/
public void onGenericTag(PdfWriter writer,Document document,Rectangle rect,String text) {
}
}