de.japes.text.PdfCreator.java Source code

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Here is the source code for de.japes.text.PdfCreator.java

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/**************************************************************************/
/*  NASTY - Network Analysis and STatistics Yielding                      */
/*                                                                        */
/*  Copyright (C) 2006 History Project, http://www.history-project.net    */
/*  History (HIgh-Speed neTwork mOniToring and analYsis) is a research    */
/*  project by the Universities of Tuebingen and Erlangen-Nuremberg,      */
/*  Germany                                                               */
/*                                                                        */
/*  Authors of NASTY are:                                                 */
/*      Christian Japes, University of Erlangen-Nuremberg                 */
/*      Thomas Schurtz, University of Tuebingen                           */
/*      David Halsband, University of Tuebingen                           */
/*      Gerhard Muenz <muenz@informatik.uni-tuebingen.de>,                */
/*          University of Tuebingen                                       */
/*      Falko Dressler <dressler@informatik.uni-erlangen.de>,             */
/*          University of Erlangen-Nuremberg                              */
/*                                                                        */
/*  This program is free software; you can redistribute it and/or modify  */
/*  it under the terms of the GNU General Public License as published by  */
/*  the Free Software Foundation; either version 2 of the License, or     */
/*  (at your option) any later version.                                   */
/*                                                                        */
/*  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 General Public License for more details.                          */
/*                                                                        */
/*  You should have received a copy of the GNU General Public License     */
/*  along with this program; if not, write to the Free Software           */
/*  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA  */
/**************************************************************************/

/*
 * Created on 29.09.2004
 */

package de.japes.text;

/**
 * @author unrza88
 * 
 * partly taken from http://www.lowagie.com/iText/examples/Chap0101.java
 */

import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.Calendar;

import com.lowagie.text.*;
import com.lowagie.text.pdf.PdfWriter;

public class PdfCreator {

    public String exportToPdf(byte[] imgArray) {

        String filename;
        Document document = new Document();
        Image img = null;

        Calendar cal = Calendar.getInstance();

        filename = "chart_" + cal.get(Calendar.YEAR) + cal.get(Calendar.MONTH) + cal.get(Calendar.DAY_OF_MONTH)
                + "_" + cal.get(Calendar.HOUR_OF_DAY) + cal.get(Calendar.MINUTE) + ".pdf";

        try {
            img = Image.getInstance(imgArray);
        } catch (MalformedURLException e) {
            return e.getMessage();
        } catch (IOException e) {
            return e.getMessage();
        } catch (BadElementException e) {
            return e.getMessage();
        }

        img.setAlignment(Image.ALIGN_CENTER);

        try {

            // step 2:
            // we create a writer that listens to the document
            // and directs a PDF-stream to a file

            PdfWriter.getInstance(document, new FileOutputStream(filename));

            // step 3: we open the document
            document.open();

            // step 4: we add a paragraph to the document
            document.add(img);

        } catch (DocumentException de) {
            return de.getMessage();
        } catch (IOException ioe) {
            return ioe.getMessage();
        }

        // step 5: we close the document
        document.close();

        return filename;
    }
}