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Comb fields in forms

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jnyrup

Post subject: Comb fields in forms

Posted: Fri Sep 02, 2016 5:30 pm

Joined: Fri Sep 02, 2016 1:46 pm
Posts: 2

I have a pdf form with text fields with the comb flag set.
When filling out such a text field with PDFsharp, the characters are not spaced evenly.
I am aware that PDFsharp currently supports up until PDF 1.4 and the comb flag was first introduced in PDF 1.5, see page 691 in the specification.

So until PDFsharp hopefully gets native support for this, does anyone have a workaround to get the characters evenly spaced?

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(void)

Post subject: Re: Comb fields in forms

Posted: Mon Sep 05, 2016 5:44 pm

Joined: Tue Sep 30, 2014 12:29 pm
Posts: 36

Have a look at the patch provided in this thread:
viewtopic.php?f=2&t=3369

It also contains code for rendering Text-Fields with the Comb-Flag set.

HTH
Thomas

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jnyrup

Post subject: Re: Comb fields in forms

Posted: Wed Sep 07, 2016 7:52 am

Joined: Fri Sep 02, 2016 1:46 pm
Posts: 2

That works brilliantly!
Thank you very much Thomas.

As a side note, your patch introduced an unnecessary check, which I removed in my fork.
https://github.com/jnyrup/PDFsharp/commit/98e70e9e90818294badece6c1da0d8edf49aa29a

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