org.kalypso.ogc.gml.map.handlers.utils.PDFExporter.java Source code

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Here is the source code for org.kalypso.ogc.gml.map.handlers.utils.PDFExporter.java

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 * 
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 * 
 *  and
 *  
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 * 
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 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
 *  Lesser General Public License for more details.
 * 
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 *  Contact:
 * 
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *   
 *  ---------------------------------------------------------------------------*/
package org.kalypso.ogc.gml.map.handlers.utils;

import java.awt.Insets;
import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;

import org.apache.commons.io.IOUtils;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.kalypso.ogc.gml.map.IMapPanel;
import org.kalypso.ogc.gml.mapmodel.MapModellHelper;
import org.kalypso.ui.KalypsoGisPlugin;
import org.kalypso.ui.internal.i18n.Messages;

import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.PdfWriter;

/**
 * Exports a map to a PDF.
 * 
 * @author Holger Albert
 */
public class PDFExporter {
    /**
     * The map panel.
     */
    private final IMapPanel m_mapPanel;

    /**
     * The constructor.
     * 
     * @param mapPanel
     *          The map panel.
     */
    public PDFExporter(final IMapPanel mapPanel) {
        m_mapPanel = mapPanel;
    }

    public IStatus doExport(final File targetFile, IProgressMonitor monitor) {
        /* If no monitor is given, take a null progress monitor. */
        if (monitor == null)
            monitor = new NullProgressMonitor();

        /* The output streams. */
        BufferedOutputStream os = null;

        try {
            /* Monitor. */
            monitor.beginTask(Messages.getString("PDFExporter_0"), 1000); //$NON-NLS-1$
            monitor.subTask(Messages.getString("PDFExporter_1")); //$NON-NLS-1$

            /* Create the image. */
            final Insets insets = new Insets(10, 10, 10, 10);
            final BufferedImage image = MapModellHelper.createWellFormedImageFromModel(m_mapPanel,
                    (int) PageSize.A4.getHeight(), (int) PageSize.A4.getWidth(), insets, 1);

            /* Convert to an itext image. */
            final Image img = Image.getInstance(image, null);

            /* Monitor. */
            monitor.worked(500);
            monitor.subTask(Messages.getString("PDFExporter_2")); //$NON-NLS-1$

            /* Create the output stream. */
            os = new BufferedOutputStream(new FileOutputStream(targetFile));

            /* Create a new document. */
            final Document document = new Document(
                    new com.itextpdf.text.Rectangle(PageSize.A4.getHeight(), PageSize.A4.getWidth()), 30, 30, 30,
                    30);

            /* Create the pdf writter. */
            final PdfWriter writer = PdfWriter.getInstance(document, os);
            writer.setCompressionLevel(0);

            /* Open the document. */
            document.open();

            /* Set the position. */
            img.setAbsolutePosition(0, 0);

            /* Set to the pdf. */
            writer.getDirectContent().addImage(img, true);

            /* Close the document. */
            document.close();

            /* Monitor. */
            monitor.worked(500);

            return new Status(IStatus.OK, KalypsoGisPlugin.getId(), Messages.getString("PDFExporter_3")); //$NON-NLS-1$
        } catch (final Exception ex) {
            return new Status(IStatus.ERROR, KalypsoGisPlugin.getId(), ex.getLocalizedMessage(), ex);
        } finally {
            /* Close the output streams. */
            IOUtils.closeQuietly(os);

            /* Monitor. */
            monitor.done();
        }
    }
}