org.oscarehr.casemgmt.service.PageNumberStamper.java Source code

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Here is the source code for org.oscarehr.casemgmt.service.PageNumberStamper.java

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/**
 * Copyright (c) 2001-2002. Department of Family Medicine, McMaster University. All Rights Reserved.
 * This software is published under the GPL GNU General Public License.
 * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * This software was written for the
 * Department of Family Medicine
 * McMaster University
 * Hamilton
 * Ontario, Canada
 */
package org.oscarehr.casemgmt.service;

import com.lowagie.text.Document;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfTemplate;
import com.lowagie.text.pdf.PdfWriter;

public class PageNumberStamper extends FooterSupport {

    protected PdfTemplate total;

    public PageNumberStamper(int offset) {
        setBaseOffset(offset);
    }

    public void onEndPage(PdfWriter writer, Document document) {
        PdfContentByte cb = writer.getDirectContent();
        cb.saveState();

        String text = "Page " + writer.getPageNumber() + " of ";

        // height where text starts 
        float textBase = document.bottom() - getBaseOffset();
        float textSize = getFont().getWidthPoint(text, getFontSize());
        float width = document.getPageSize().getWidth();
        float center = width / 2.0f;

        cb.beginText();
        cb.setFontAndSize(getFont(), getFontSize());

        cb.setTextMatrix(document.left(), textBase);
        cb.showTextAligned(PdfContentByte.ALIGN_CENTER, text, center, textBase, 0);
        cb.endText();
        cb.addTemplate(total, center + (textSize / 2.0f), textBase);

        cb.restoreState();
    }

    /**
     * Adds total number of pages to the template
     * 
     * @param writer
     * @param document
     */
    public void onCloseDocument(PdfWriter writer, Document document) {
        total.beginText();
        total.setFontAndSize(getFont(), getFontSize());
        total.setTextMatrix(0, 0);
        total.showText(String.valueOf(writer.getPageNumber() - 1));
        total.endText();
    }

    /**
     * Initializes template and base font
     * 
     * @param writer
     * @param document
     */
    public void onOpenDocument(PdfWriter writer, Document document) {
        total = writer.getDirectContent().createTemplate(100, 100);
        total.setBoundingBox(new Rectangle(-40, -40, 100, 100));
    }

    public PdfTemplate getTotal() {
        return total;
    }

    public void setTotal(PdfTemplate total) {
        this.total = total;
    }

}