[iText-questions] Strange behavior of some GIF images

[Patrick Valsecchi]

Hi,

The attached code produces some strange results. It writes some text and draws 
a GIF with some transparent pixels over it. If you look at it on the screen, 
it looks good. If you print it, you get a big black thing with random white 
pixels instead of the image.

I tried with acrobat reader versions 8 and 9 and both are showing the same 
behavior. But with kpdf, the printed results are correct.

I'm using iText version 2.1.5.

Do you guys have any idea on what may be wrong? My guess: Acrobat, but what 
can we do?

Thanks.

-- 
Patrick Valsecchi
Senior Software Engineer
Camptocamp Suisse SA
http://www.camptocamp.com
+41 21 619 1030

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Image;
import com.lowagie.text.PageSize;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfStream;
import com.lowagie.text.pdf.PdfWriter;

import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;

public class BugGif {
    public static void main(String[] args) throws IOException, DocumentException {
        FileOutputStream out = new FileOutputStream("bugGIF.pdf");
        Document doc = new Document(PageSize.A4);
        PdfWriter writer = PdfWriter.getInstance(doc, out);
        writer.setFullCompression();
        writer.setPdfVersion(PdfWriter.PDF_VERSION_1_5);
        writer.setCompressionLevel(PdfStream.BEST_COMPRESSION);

        doc.open();

        PdfContentByte dc = writer.getDirectContent();

        dc.setFontAndSize(BaseFont.createFont(), 18);
        dc.beginText();
        dc.moveText(40, 140);
        dc.showText("This text should be fully readable even when printed");
        dc.endText();

        final Image image = Image.getInstance(new URL("http://dev.mapfish.org/tmp/bugPDF.gif";));
        image.setAbsolutePosition(100, 100);
        image.scaleAbsolute(256, 256);
        dc.addImage(image);
        dc.rectangle(100, 100, 256, 256);
        dc.stroke();

        doc.close();
        writer.close();
        out.close();
    }
}

bugGIF.pdf
Description: Adobe PDF document

------------------------------------------------------------------------------
Register Now & Save for Velocity, the Web Performance & Operations 
Conference from O'Reilly Media. Velocity features a full day of 
expert-led, hands-on workshops and two days of sessions from industry 
leaders in dedicated Performance & Operations tracks. Use code vel09scf 
and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf
_______________________________________________
iText-questions mailing list
iText-questions@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/itext-questions

Buy the iText book: http://www.1t3xt.com/docs/book.php