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Can I create XFont from data in the PDF file?

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cshearercooper

Post subject: Can I create XFont from data in the PDF file?

Posted: Sat Jan 04, 2025 5:58 pm

Joined: Tue Dec 17, 2024 11:56 pm
Posts: 8

I'd like to edit a PDF file, adding more text using the same font as other text already in the PDF file.
I've got the code working to look through the /Resources for the current /Page and find all the /Font dictionaries, but I am unsure how to jump from that to XFont.
Any ideas?
Thanks!

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TH-Soft

Post subject: Re: Can I create XFont from data in the PDF file?

Posted: Mon Jan 06, 2025 8:42 am

PDFsharp Guru

Joined: Sat Mar 14, 2015 10:15 am
Posts: 1026
Location: CCAA

Can you do it? I dunno.

Can it be done? Yes, but it'll be very complicated.

Note that the font tables in a PDF file often just contain subsets of fonts, leaving out characters that are not used.
You cannot write "Fox" when the PDF file only contains the glyphs for "Hello, World!".

_________________
Best regards
Thomas
(Freelance Software Developer with several years of MigraDoc/PDFsharp experience)

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