Op 27/08/2012 17:07, Elias_iText schreef:
> I receive the signed PDF file and I have no control over the type of
> signature.
If a PDF is signed, it could have restrictions.
You should assume that you can add annotations:
1.) without breaking the signature
2.) without causing a warning.
> Yes, the program does what I want,
I don't think so, because what I've said above is inherent to the PDF
specification.
> but I need this functionality to a bigger
> system and in this case, the Web program does not work integrated. One
> license is required and I would not buy a license just to figure out how it
> makes, no sense.
Er... Two things:
1.) If the people at signfiles.com use iText(Sharp), they also need to
buy an iText license. (A mail has been sent to sales to check if they've
bought one.)
2.) If you plan on using iText, you'll probably need a license too,
won't you?
> Below part of my code:
> ...
> PdfStamper stamper = PdfStamper.createSignature(reader, new
> FileOutputStream(dest), '\0', null, true);
> int qtypages = reader.getNumberOfPages();
> PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
> appearance.setReason("Test.");
> appearance.setLocation("anywhere");
> appearance.setVisibleSignature(new Rectangle(0,750, 30, 200), qtypages,
> "mysignature");
> appearance.setSignatureGraphic(image);
> appearance.setRenderingMode(PdfSignatureAppearance.RenderingMode.GRAPHIC);
> ...
But... but... you've just told us that you receive the signed PDF. Now
you're signing it once more. Is that your intention?
> Here, I put the annotations on the pages :
> ...
> for (int i = 1; i < qtypages; i++) {
> PdfAnnotation stp = PdfAnnotation.createStamp(stamper.getWriter(), new
> Rectangle(0,700,30, 200), "MY STAMP", "STP"+i);
> PdfAppearance tp = PdfAppearance.createAppearance(stamper.getWriter(),
> image.getPlainHeight(),image.getPlainWidth());
> image.setAbsolutePosition(0, 0);
> tp.addImage(image);
> stp.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, tp);
> stamper.addAnnotation(stp,i);
> }
> ..
>
> and I need to know how to put the signature field reference into the
> annotation in order to that annotation show the signature content as does
> the signature field.
Strange... The annotation used for a signature is a Widget annotation,
yet you want it to be a Stamp annotation? The question is so confusing
that you probably won't get an answer.
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