I actually make it happen with 1.8.x. It was a bit dirty because I had to write
my own addSignature() function.
But now with 2.0.0 some setter disappear and the function addSignature() have
radically changed.
At this point, I succeed to move and resize the PDRectangle of the visual
signature but when I want to set the correct PDSignatureField an exception
occurs.
Exception in thread "main" java.lang.UnsupportedOperationException: not
implemented
at
org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField.constructAppearances(PDSignatureField.java:237)
at
org.apache.pdfbox.pdmodel.interactive.form.PDTerminalField.applyChange(PDTerminalField.java:221)
at
org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField.setValue(PDSignatureField.java:121)
at
org.apache.pdfbox.pdmodel.interactive.digitalsignature.visible.PDVisibleSigBuilder.createSignature(PDVisibleSigBuilder.java:108)
Cyril.
-----Original Message-----
From: Evan Williams [mailto:[email protected]]
Sent: Tuesday, April 12, 2016 3:17 PM
To: [email protected]
Subject: Re: Fill an existing visible signature field with visual signature
For what it is worth, I tried and tried. I worked diligently to make this
happen for a long time, and then when 1.8 transitioned to 2.0 I tried again. It
never worked. It failed to work in a variety of different ways but I never got
it to work.
For my own purposes I did not actually need a valid digital signature. I only
needed the visual signature. The digital signature was not required it was just
a nice to have. So I just use PDF drawing commands to draw the signature on the
right place on the page using the location of the signature field rectangle as
a guide.
That probably fixes no one's problem but my own, but if it does then I am glad
to help.
But I can tell you that I put way more hours than I should into making this
work and it never did.
On Tue, Apr 12, 2016 at 7:17 AM, BREMAUD, CYRIL <[email protected]>
wrote:
> @Tilman
> You may think about that discussion :
> http://stackoverflow.com/questions/31571055/how-can-i-get-pdvisiblesig
> properties-to-write-the-signature-on-the-3-page-into-t/
>
> Please find attach a sample PDF document with empty visible signatures
> fields.
>
> @Maruan
> I succeed to set a new PDRectangle for my visible signature by writing
> a function based on PDFTemplateCreator.buildPDF(). But I'm still
> working on filling an empty already existing visible signature field.
>
> Thank you.
>
> Cyril.
>
> -----Original Message-----
> From: Maruan Sahyoun [mailto:[email protected]]
> Sent: Monday, April 11, 2016 7:12 PM
> To: [email protected]
> Subject: Re: Fill an existing visible signature field with visual
> signature
>
> Hi,
>
> > Am 11.04.2016 um 19:05 schrieb Maruan Sahyoun <[email protected]>:
> >
> > Hi,
> >
> >> Am 11.04.2016 um 18:58 schrieb Tilman Hausherr <[email protected]>:
> >>
> >> Am 11.04.2016 um 13:17 schrieb BREMAUD, CYRIL:
> >>> Hello,
> >>> I am trying to sign a PDF document with an existing visible
> >>> signature
> field. I wonder if this is possible to achieve that with PDFBox 2.0.0.
> >>> I also want to define the size of the visible signature generate
> >>> with
> PDFBox.
>
> the size of the signature can be set using the fields rectangle. As
> written before you would be on your own to generate a matching
> appearance stream.
>
> BR
> Maruan
>
> >>> Thank you.
> >>> Cyril Bremaud.
> >>>
> >>>
> >>
> >> I suspect it isn't possible. I remember that this was discussed in
> stackoverflow, but I can't find the link. Can you share a file?
> >
> > correct - there is currently no regeneration of the appearance
> > stream
> based on the updated information.
> >
> > Maruan
> >
> >>
> >> Tilman
> >>
> >> -------------------------------------------------------------------
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> >>
> >
> >
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>
>
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--
*Evan Williams*
Sr. Software Engineer
[email protected]
*www.ZappRx.com <http://www.zapprx.com/>*
