sap.setVisibleSignature("field_name");
Paulo
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Ismael F
> Sent: Tuesday, February 12, 2008 2:30 PM
> To: Post all your questions about iText here
> Subject: Re: [iText-questions] signing a blank signature
> fieldpreviously created as a signature placeholder
>
> Thanks,
>
> I understood that, and I do it in two step process (opening
> and closing the document in every step):
> 1) First form field creation included blank signature field
> (witn name "keyfield" ).
> opening and closing the document in this step.
> 2) Form filling and Signing ("keyfield" blank signature
> previouly created )
> opening and closing the document in this step.
>
> but it is in this second step where I don't know how to
> reference the corresponding PdfSignatureAppearance from
> "keyfield" signature to make the automatic external signing
> like:
> PdfSignatureAppearance sap = stp.getSignatureAppearance();
> sap.setCrypto(key, chain, null, PdfSignatureAppearance.WINCER_SIGNED);
> sap.setReason("I'm the author");
> sap.setLocation("Lisbon");
> // comment next line to have an invisible signature
> sap.setVisibleSignature(new Rectangle(100, 100, 200, 200), 1, null);
> stp.close();
>
>
> because I could not find at iText API any method that returns
> PdfSignatureAppearance corresponding to a specific signature
> field (in this case was "keyfield").
> the line
> PdfSignatureAppearance sap = stp.getSignatureAppearance();
>
> works with the signature field just created with
> PdfStamper tStamper =
> PdfStamper.createSignature(tReader,tOutStream,'\0');
>
> but that was what I made in the first step to create the
> corresponding blank signature field.
>
> It's possible to create the blank signature field and signing
> it in two process step?
>
>
> Thanks again.
>
>
> > Date: Tue, 12 Feb 2008 10:36:07 +0000
> > From: [EMAIL PROTECTED]
> > To: [email protected]
> > Subject: Re: [iText-questions] signing a blank signature
> field previously created as a signature placeholder
> >
> > You have to create first the pdf with the blank field, close it, and
> > than read it with PdfReader as in the examples. It's always
> a two step
> > process.
> >
> > Paulo
> >
> > > -----Original Message-----
> > > From: [EMAIL PROTECTED]
> > > [mailto:[EMAIL PROTECTED] On
> > > Behalf Of Ismael F
> > > Sent: Tuesday, February 12, 2008 8:14 AM
> > > To: Post all your questions about iText here
> > > Subject: [iText-questions] signing a blank signature field
> > > previously created as a signature placeholder
> > >
> > > Hello,
> > >
> > > As I have read in some posts I've created a blank signature
> > > field called 'keyfield':
> > >
> > >
> > >
> > > PdfFormField sig =
> PdfFormField.createSignature(stamper.getWriter());
> > >
> > > sig.setWidget(fieldposition, null);
> > >
> > > sig.setFlags(PdfAnnotation.FLAGS_PRINT);
> > >
> > > sig.put(PdfName.DA, new PdfString("/Helv 0 Tf 0 g"));
> > >
> > > sig.setFieldName(keyfield);
> > >
> > > sig.setPage(page);
> > >
> > > stamper.addAnnotation(sig, page);
> > >
> > >
> > > Then after pdf manipulation and form filling the document
> > > needs to be automatically signed.
> > > with iText but I don't know how to achieve this.
> > >
> > > It's possible to get the "PdfSignatureAppearance" linked to
> > > 'keyfield' blank signature field previously created?
> > >
> > > As I have read, I know that I will have to do a 'preclose' to
> > > calculate document size before 'close' SignatureAppearance,
> > > but I haven't found any constructor like:
> > >
> > > PdfSignatureAppearance tSignatureAppearance =
> > > tStamper.getSignatureAppearance ("keyfield"); // get
> > > 'keyfield' signature appearance
> > >
> > >
> > > It's necessary to fill the blank signature field just after
> > > it has been created with
> > > PdfStamper tStamper =
> > > PdfStamper.createSignature(tReader,tOutStream,'\0');
> > >
> > > as is explained everywhere?
> > > http://itextpdf.sourceforge.net/howtosign.html
> > > http://www.mail-archive.com/[EMAIL PROTECTED]
> > > net/msg34083.html
> > > http://www.mail-archive.com/[EMAIL PROTECTED]
> > > net/msg17968.html
> > > http://answers.suziana.com/2006/12/12/re-computing-the-signatu
> > > re-size-before-signing-2.html
> > >
> > >
> > > Thanks a lot!
> > >
> > > Ismael Fortuny
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