pdfpageeventhelper.java

java itext java itext java itext

/*
 * $Id: PdfPageEventHelper.java,v 1.12 2001/12/10 15:37:45 blowagie Exp $
 * $Name:  $
 *
 * Copyright 2001 by Paulo Soares.
 *
 * 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 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 Foundation, Inc., 59 Temple Place,
 * Suite 330, Boston, MA 02111-1307 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/
 *
 * ir-arch Bruno Lowagie,
 * Adolf Baeyensstraat 121
 * 9040 Sint-Amandsberg
 * BELGIUM
 * tel. [phone]
 * [e-mail]
 *
 */

package com.lowagie.text.pdf;
import com.lowagie.text.Document;
import com.lowagie.text.Rectangle;
import com.lowagie.text.Paragraph;

/**
 * Helps the use of <CODE>PdfPageEvent</CODE> by implementing all the interface methods.
 * A class can extend <CODE>PdfPageEventHelper</CODE> and only implement the
 * needed methods.
 *
 * @author Paulo Soares ([e-mail])
 */

public class PdfPageEventHelper implements PdfPageEvent {
    
/**
 * Called when the document is opened.
 *
 * @param writer the <CODE>PdfWriter</CODE> for this document
 * @param document the document
 */
    public void onOpenDocument(PdfWriter writer,Document document) {
    }
    
/**
 * Called when a page is initialized.
 * <P>
 * Note that if even if a page is not written this method is still
 * called. It is preferable to use <CODE>onEndPage</CODE> to avoid
 * infinite loops.
 *
 * @param writer the <CODE>PdfWriter</CODE> 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 <CODE>PdfWriter</CODE> for this document
 * @param document the document
 */
    public void onEndPage(PdfWriter writer,Document document) {
    }
    
/**
 * Called when the document is closed.
 * <P>
 * Note that this method is called with the page number equal
 * to the last page plus one.
 *
 * @param writer the <CODE>PdfWriter</CODE> for this document
 * @param document the document
 */
    public void onCloseDocument(PdfWriter writer,Document document) {
    }
    
/**
 * Called when a Paragraph is written.
 * <P>
 * <CODE>paragraphPosition</CODE> will hold the height at which the
 * paragraph will be written to. This is useful to insert bookmarks with
 * more control.
 *
 * @param writer the <CODE>PdfWriter</CODE> 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.
 * <P>
 * <CODE>paragraphPosition</CODE> will hold the height of the end of the paragraph.
 *
 * @param writer the <CODE>PdfWriter</CODE> 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.
 * <P>
 * <CODE>position</CODE> will hold the height at which the
 * chapter will be written to.
 *
 * @param writer the <CODE>PdfWriter</CODE> for this document
 * @param document the document
 * @param position the position the chapter will be written to
 */
    public void onChapter(PdfWriter writer,Document document,float paragraphPosition,Paragraph title) {
    }
    
/**
 * Called when the end of a Chapter is reached.
 * <P>
 * <CODE>position</CODE> will hold the height of the end of the chapter.
 *
 * @param writer the <CODE>PdfWriter</CODE> 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.
 * <P>
 * <CODE>position</CODE> will hold the height at which the
 * section will be written to.
 *
 * @param writer the <CODE>PdfWriter</CODE> for this document
 * @param document the document
 * @param position the position the section will be written to
 * @param depth the depth 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.
 * <P>
 * <CODE>position</CODE> will hold the height of the section end.
 *
 * @param writer the <CODE>PdfWriter</CODE> 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 <CODE>Chunk</CODE> with a generic tag is written.
 * <P>
 * It is usefull to pinpoint the <CODE>Chunk</CODE> location to generate
 * bookmarks, for example.
 *
 * @param writer the <CODE>PdfWriter</CODE> for this document
 * @param document the document
 * @param rect the <CODE>Rectangle</CODE> containing the <CODE>Chunk</CODE>
 * @param text the text of the tag
 */
    public void onGenericTag(PdfWriter writer,Document document,Rectangle rect,String text) {
    }
}