Page numbers and PDF/A

31st May 2016
admin-marketing

This example was written in answer to the question How to add a page number in the header of a PDF/A Level A file?

PdfA1a.java
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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2019 iText Group NV
    Authors: iText Software.
 
    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
/**
 * Example written by Bruno Lowagie in answer to:
 * http://stackoverflow.com/questions/27500586/itext-page-number-in-header-within-pdf-a
 */
package com.itextpdf.samples.sandbox.pdfa;
 
import com.itextpdf.io.font.PdfEncodings;
import com.itextpdf.kernel.events.Event;
import com.itextpdf.kernel.events.IEventHandler;
import com.itextpdf.kernel.events.PdfDocumentEvent;
import com.itextpdf.kernel.font.PdfFont;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.geom.PageSize;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.*;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
import com.itextpdf.kernel.pdf.tagging.StandardRoles;
import com.itextpdf.kernel.pdf.xobject.PdfFormXObject;
import com.itextpdf.kernel.xmp.XMPException;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Image;
import com.itextpdf.layout.element.Paragraph;
import com.itextpdf.layout.element.Table;
import com.itextpdf.layout.property.UnitValue;
import com.itextpdf.pdfa.PdfADocument;
import com.itextpdf.samples.GenericTest;
import com.itextpdf.test.annotations.type.SampleTest;
 
import org.junit.experimental.categories.Category;
 
import java.io.*;
import java.util.StringTokenizer;
 
@Category(SampleTest.class)
public class PdfA1a extends GenericTest {
    public static final String DEST = "./target/test/resources/sandbox//pdfa/pdf_a_1a.pdf";
    public static final String BOLD = "./src/test/resources/font/OpenSans-Bold.ttf";
    public static final String DATA = "./src/test/resources/data/united_states.csv";
    public static final String FONT = "./src/test/resources/font/OpenSans-Regular.ttf";
 
    protected PdfFormXObject template;
    protected Image total;
    protected PdfFont font;
    protected PdfFont bold;
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new PdfA1a().manipulatePdf(DEST);
    }
 
    public void manipulatePdf(String dest) throws IOException, XMPException {
        font = PdfFontFactory.createFont(FONT, PdfEncodings.IDENTITY_H);
        bold = PdfFontFactory.createFont(BOLD, PdfEncodings.IDENTITY_H);
        FileInputStream is = new FileInputStream("./src/test/resources/data/sRGB_CS_profile.icm");
        PdfADocument pdfDoc = new PdfADocument(new PdfWriter(dest), PdfAConformanceLevel.PDF_A_1A,
                new PdfOutputIntent("Custom", "", "http://www.color.org", "sRGB IEC61966-2.1", is));
 
        Document document = new Document(pdfDoc, new PageSize(PageSize.A4).rotate());
        pdfDoc.setTagged();
 
        template = new PdfFormXObject(new Rectangle(795, 575, 30, 30));
        PdfCanvas canvas = new PdfCanvas(template, pdfDoc);
        total = new Image(template);
        total.getAccessibilityProperties().setRole(StandardRoles.ARTIFACT);
 
        pdfDoc.addEventHandler(PdfDocumentEvent.END_PAGE, new HeaderHandler());
        pdfDoc.getCatalog().setLang(new PdfString("en-us"));
        PdfDictionary parameters = new PdfDictionary();
        parameters.put(PdfName.ModDate, new PdfDate().getPdfObject());
 
        Table table = new Table(UnitValue.createPercentArray(new float[]{4, 1, 3, 4, 3, 3, 3, 3, 1})).useAllAvailableWidth();
        BufferedReader br = new BufferedReader(new FileReader(DATA));
        String line = br.readLine();
        process(table, line, bold, 10, true);
        while ((line = br.readLine()) != null) {
            process(table, line, font, 10, false);
        }
        br.close();
        document.add(table);
 
        canvas.beginText();
        canvas.setFontAndSize(bold, 12);
        canvas.moveText(795, 575);
        canvas.showText(Integer.toString(pdfDoc.getNumberOfPages()));
        canvas.endText();
        canvas.stroke();
 
        document.close();
    }
 
    public void process(Table table, String line, PdfFont font, int fontSize, boolean isHeader) {
        StringTokenizer tokenizer = new StringTokenizer(line, ";");
        while (tokenizer.hasMoreTokens()) {
            if (isHeader) {
                table.addHeaderCell(new Paragraph(tokenizer.nextToken()).setFont(font).setFontSize(fontSize));
            } else {
                table.addCell(new Paragraph(tokenizer.nextToken()).setFont(font).setFontSize(fontSize));
            }
        }
    }
 
 
    public class HeaderHandler implements IEventHandler {
        @Override
        public void handleEvent(Event event) {
            PdfDocumentEvent docEvent = (PdfDocumentEvent) event;
            PdfPage page = docEvent.getPage();
            int pageNum = docEvent.getDocument().getPageNumber(page);
            PdfCanvas canvas = new PdfCanvas(page);
            canvas.beginText();
            canvas.setFontAndSize(font, 12);
            canvas.beginMarkedContent(PdfName.Artifact);
            canvas.moveText(34, 575);
            canvas.showText("Test");
            canvas.moveText(703, 0);
            canvas.showText(String.format("Page %d of", pageNum));
            canvas.endText();
            canvas.stroke();
            canvas.addXObject(template, 0, 0);
            canvas.endMarkedContent();
            canvas.release();
        }
    }
}

Click the following link to see the legacy example for iText 5. Except for security fixes, iText 5 is no longer being developed.



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