iText in Action: Chapter 6: Working with existing PDFs

part2.chapter06.TilingHero

If you compile and execute this example, you'll get the following result:

You can download the full source code of TilingHero, or read it here:

/*
 * This class is part of the book "iText in Action - 2nd Edition"
 * written by Bruno Lowagie (ISBN: 9781935182610)
 * For more info, go to: http://itextpdf.com/examples/
 * This example only works with the AGPL version of iText.
 */
 
package part2.chapter06;
 
import java.io.FileOutputStream;
import java.io.IOException;
 
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;
 
public class TilingHero {
 
    /** The original PDF file. */
    public static final String RESOURCE
        = "resources/pdfs/hero.pdf";
 
    /** The resulting PDF file. */
    public static final String RESULT
        = "results/part2/chapter06/superman.pdf";
 
    /**
     * Manipulates a PDF file src with the file dest as result
     * @param src the original PDF
     * @param dest the resulting PDF
     * @throws IOException
     * @throws DocumentException
     */
    public void manipulatePdf(String src, String dest)
        throws IOException, DocumentException {
    	// Creating a reader
        PdfReader reader = new PdfReader(src);
        Rectangle pagesize = reader.getPageSizeWithRotation(1);
        // step 1
        Document document = new Document(pagesize);
        // step 2
        PdfWriter writer
            = PdfWriter.getInstance(document, new FileOutputStream(dest));
        // step 3
        document.open();
        // step 4
        PdfContentByte content = writer.getDirectContent();
        PdfImportedPage page = writer.getImportedPage(reader, 1);
        // adding the same page 16 times with a different offset
        float x, y;
        for (int i = 0; i < 16; i++) {
            x = -pagesize.getWidth() * (i % 4);
            y = pagesize.getHeight() * (i / 4 - 3);
            content.addTemplate(page, 4, 0, 0, 4, x, y);
            document.newPage();
        }
        // step 4
        document.close();
        reader.close();
    }
 
    /**
     * Main method.
     * @param    args    no arguments needed
     * @throws DocumentException 
     * @throws IOException
     */
    public static void main(String[] args)
        throws IOException, DocumentException {
        new TilingHero().manipulatePdf(RESOURCE, RESULT);
    }
}
 
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The TilingHero example is part of the book iText in Action (ISBN 9781935182610).

It's a small standalone application. You can use this example for inspiration, but please read the book if there's something you don't understand about the example. You'll find more info in Chapter 6.

Keywords for this example: Existing PDFs, PdfImportedPage, PdfReader, Tiling a PDF

If you want this example to work, you need the following jars: iText.jar

This example uses the following resources: hero.pdf.