questions.compression.CompressionLevelsEmbeddedFiles.java Source code

Introduction

Here is the source code for questions.compression.CompressionLevelsEmbeddedFiles.java

Source

/*
 * This example was written by Bruno Lowagie, author of the book
 * 'iText in Action' by Manning Publications (ISBN: 1932394796).
 * You can use this example as inspiration for your own applications.
 * The following license applies:
 * http://www.1t3xt.com/about/copyright/index.php?page=MIT
 */

package questions.compression;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfAnnotation;
import com.lowagie.text.pdf.PdfFileSpecification;
import com.lowagie.text.pdf.PdfWriter;

public class CompressionLevelsEmbeddedFiles {

    public static final String RESOURCE = "resources/questions/txt/caesar.txt";
    public static final String[] RESULT = { "results/questions/compression/attachment_default_compression.pdf",
            "results/questions/compression/attachment_no_compression.pdf",
            "results/questions/compression/attachment_best_speed.pdf",
            "results/questions/compression/attachment_level_2.pdf",
            "results/questions/compression/attachment_level_3.pdf",
            "results/questions/compression/attachment_level_4.pdf",
            "results/questions/compression/attachment_level_5.pdf",
            "results/questions/compression/attachment_level_6.pdf",
            "results/questions/compression/attachment_level_7.pdf",
            "results/questions/compression/attachment_level_8.pdf",
            "results/questions/compression/attachment_best_compression.pdf" };

    public static void main(String[] args) {
        File file;
        for (int i = -1; i < 10; i++) {
            long before = new Date().getTime();
            createPdf(i);
            long after = new Date().getTime();
            file = new File(RESULT[i + 1]);
            System.out.println(
                    file.getName() + "; time: " + (after - before) + "ms; length: " + file.length() + " bytes");
        }
    }

    public static void createPdf(int compressionLevel) {
        try {
            Document document = new Document();
            PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(RESULT[compressionLevel + 1]));
            document.open();
            document.add(new Paragraph("Hello World"));
            PdfFileSpecification fs1 = PdfFileSpecification.fileEmbedded(writer, null, "some.txt",
                    "some text".getBytes(), compressionLevel);
            writer.addAnnotation(PdfAnnotation.createFileAttachment(writer, new Rectangle(100f, 750f, 120f, 770f),
                    "This is some text", fs1));
            PdfFileSpecification fs2 = PdfFileSpecification.fileEmbedded(writer, RESOURCE, "caesar.txt", null,
                    compressionLevel);
            writer.addAnnotation(PdfAnnotation.createFileAttachment(writer, new Rectangle(100f, 780f, 120f, 800f),
                    "Caesar", fs2));
            document.close();
        } catch (DocumentException de) {
            System.err.println(de.getMessage());
        } catch (IOException ioe) {
            System.err.println(ioe.getMessage());
        }
    }
}