fr.aliasource.webmail.server.export.ConversationPdfEventHandler.java Source code

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Here is the source code for fr.aliasource.webmail.server.export.ConversationPdfEventHandler.java

Source

/* ***** BEGIN LICENSE BLOCK *****
 * Version: GPL 2.0
 *
 * The contents of this file are subject to the GNU General Public
 * License Version 2 or later (the "GPL").
 *
 * 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 Initial Developer of the Original Code is
 *   MiniG.org project members
 *
 * ***** END LICENSE BLOCK ***** */

package fr.aliasource.webmail.server.export;

import java.net.URL;

import com.lowagie.text.Chunk;
import com.lowagie.text.Document;
import com.lowagie.text.Element;
import com.lowagie.text.ExceptionConverter;
import com.lowagie.text.Font;
import com.lowagie.text.Image;
import com.lowagie.text.Phrase;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfPTable;
import com.lowagie.text.pdf.PdfPageEventHelper;
import com.lowagie.text.pdf.PdfTemplate;
import com.lowagie.text.pdf.PdfWriter;

import fr.aliasource.webmail.client.shared.ClientMessage;
import fr.aliasource.webmail.server.proxy.client.ConversationReference;
import fr.aliasource.webmail.server.proxy.client.IAccount;

/**
 * 
 * @author matthieu This class add Header and pagination to conversation pdf
 */
public class ConversationPdfEventHandler extends PdfPageEventHelper {

    private Image headerImage;

    private PdfPTable table;

    private PdfTemplate tpl;

    private BaseFont helv;

    private ConversationReference cr;

    private ClientMessage[] cm;

    private IAccount account;

    public ConversationPdfEventHandler(IAccount account, ConversationReference cr, ClientMessage[] cm) {
        super();
        this.account = account;
        this.cr = cr;
        this.cm = cm;
    }

    /**
     * @see com.lowagie.text.pdf.PdfPageEventHelper#onOpenDocument(com.lowagie.text.pdf.PdfWriter,
     *      com.lowagie.text.Document)
     */
    public void onOpenDocument(PdfWriter writer, Document document) {
        try {
            headerImage = Image.getInstance(getLogoUrl());
            table = new PdfPTable(new float[] { 1f, 2f });
            Phrase p = new Phrase();
            Chunk ck = new Chunk(cr.getTitle(), new Font(Font.HELVETICA, 16, Font.BOLD));
            p.add(ck);
            p.add(Chunk.NEWLINE);
            ck = new Chunk(ConversationExporter.formatName(account), new Font(Font.HELVETICA, 12, Font.BOLDITALIC));
            p.add(ck);
            p.add(Chunk.NEWLINE);
            ck = new Chunk(cm.length + " messages", new Font(Font.HELVETICA, 10));
            p.add(ck);
            table.getDefaultCell().setBorder(0);
            table.addCell(new Phrase(new Chunk(headerImage, 0, 0)));
            table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_RIGHT);
            table.addCell(p);
            // initialization of the template
            tpl = writer.getDirectContent().createTemplate(100, 100);
            tpl.setBoundingBox(new Rectangle(-20, -20, 100, 100));
            // initialization of the font
            helv = BaseFont.createFont("Helvetica", BaseFont.WINANSI, false);
        } catch (Exception e) {
            throw new ExceptionConverter(e);
        }
    }

    /**
     * @see com.lowagie.text.pdf.PdfPageEventHelper#onEndPage(com.lowagie.text.pdf.PdfWriter,
     *      com.lowagie.text.Document)
     */
    public void onEndPage(PdfWriter writer, Document document) {
        PdfContentByte cb = writer.getDirectContent();
        cb.saveState();
        // write the headertable
        table.setTotalWidth(document.right() - document.left());
        table.writeSelectedRows(0, -1, document.left(), document.getPageSize().getHeight() - 20, cb);
        // compose the footer
        String text = writer.getPageNumber() + " / ";
        float textSize = helv.getWidthPoint(text, 12);
        float textBase = document.bottom() - 49;
        cb.beginText();
        cb.setFontAndSize(helv, 12);
        float adjust = helv.getWidthPoint("0", 12);
        cb.setTextMatrix(document.right() - textSize - adjust - 5, textBase);
        cb.showText(text);
        cb.endText();
        cb.addTemplate(tpl, document.right() - adjust, textBase);
        cb.saveState();
        // draw a Rectangle around the page
        cb.setLineWidth(1);
        cb.rectangle(20, 20, document.getPageSize().getWidth() - 40, document.getPageSize().getHeight() - 40);
        cb.stroke();
        cb.restoreState();
    }

    /**
     * @see com.lowagie.text.pdf.PdfPageEventHelper#onCloseDocument(com.lowagie.text.pdf.PdfWriter,
     *      com.lowagie.text.Document)
     */
    public void onCloseDocument(PdfWriter writer, Document document) {
        tpl.beginText();
        tpl.setFontAndSize(helv, 12);
        tpl.setTextMatrix(-5, 0);
        tpl.showText("" + (writer.getPageNumber() - 1));
        tpl.endText();
    }

    private URL getLogoUrl() {
        return Thread.currentThread().getContextClassLoader()
                .getResource("fr/aliasource/webmail/public/images/logo_print.jpg");
    }

}