org.opentestsystem.delivery.testreg.rest.view.PdfReportPageEventHelper.java Source code

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Here is the source code for org.opentestsystem.delivery.testreg.rest.view.PdfReportPageEventHelper.java

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/*******************************************************************************
 * Educational Online Test Delivery System
 * Copyright (c) 2013 American Institutes for Research
 *
 * Distributed under the AIR Open Source License, Version 1.0
 * See accompanying file AIR-License-1_0.txt or at
 * http://www.smarterapp.org/documents/American_Institutes_for_Research_Open_Source_Software_License.pdf
 ******************************************************************************/
package org.opentestsystem.delivery.testreg.rest.view;

import com.lowagie.text.Document;
import com.lowagie.text.Element;
import com.lowagie.text.ExceptionConverter;
import com.lowagie.text.Phrase;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.ColumnText;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfPageEventHelper;
import com.lowagie.text.pdf.PdfTemplate;
import com.lowagie.text.pdf.PdfWriter;

public class PdfReportPageEventHelper extends PdfPageEventHelper {
    protected PdfTemplate template;

    protected BaseFont helv;

    public PdfReportPageEventHelper(final PdfWriter writer) {
        template = writer.getDirectContent().createTemplate(100, 100);
        template.setBoundingBox(new Rectangle(-20, -20, 100, 100));
        try {
            helv = BaseFont.createFont(BaseFont.TIMES_ROMAN, BaseFont.CP1257, BaseFont.NOT_EMBEDDED);
        } catch (Exception e) {
            throw new ExceptionConverter(e);
        }
    }

    @Override
    public void onEndPage(final PdfWriter writer, final Document document) {
        PdfContentByte cb = writer.getDirectContent();
        if (document.getPageNumber() == 1) {
            ColumnText.showTextAligned(cb, Element.ALIGN_CENTER, new Phrase(""),
                    (document.right() - document.left()) / 2 + document.leftMargin(), document.top() - 5, 0f);
        }
        ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase(""), document.left(), document.bottom() - 15,
                0f);

        int pageN = writer.getPageNumber();
        String text = "Page " + pageN + " of ";
        cb.beginText();
        cb.setFontAndSize(helv, 11);
        cb.setTextMatrix(document.right() - document.rightMargin() - 10, document.bottom() - 15);
        cb.showText(text);
        cb.endText();
        cb.addTemplate(template, document.right(), document.bottom() - 15);

    }

    @Override
    public void onCloseDocument(final PdfWriter writer, final Document document) {
        template.beginText();
        template.setFontAndSize(helv, 11);
        template.setTextMatrix(0, 0);
        template.showText("" + (writer.getPageNumber() - 1));
        template.endText();
    }
}