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Home » Community » Newbie corner » Pdf parser/viewer (Loading a pdf file and render one page to a draw to display in a ctrl.)
Pdf parser/viewer [message #58213] Wed, 23 March 2022 13:09 Go to next message
brown is currently offline  brown
Messages: 8
Registered: July 2015
Location: Budapest
Promising Member
Hi Guys,
I have a project to manage documents. The app has its own scanner manager (ole/Wia), which could also create pdf files based on bmp/jpg conversion. I am also able to implement a textual report renderer to write pdfs.
Unfortunately, I have other pdf files which were not generated by my app. So, I would like to parse it for some reasons.

In my understanding the PdfDraw can only render pdf format (see PdfDraw::Finish() function),
but it is not able to read/load/parse a pdf file. Am I right ?

Is it a project on-going development somewhere to have this feature for U++ ?

My actual goal would be,

  • load an external pdf file, parse it some level
  • to check the signature(s), add a signature to an ordinary pdf file.
  • render one static view (in example ctrl::paint(draw&) way would be fine)

    • in case of image is encoded into the pdf, that is not a problem for my use-case.
    • in case of vector graph/text content is in pdf, some kind of graphical render is needed.
  • to be able to display pdf files on linux, windows and maybe with Turtle later.

[Updated on: Wed, 23 March 2022 13:14]

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Re: Pdf parser/viewer [message #58214 is a reply to message #58213] Thu, 24 March 2022 23:07 Go to previous messageGo to next message
Lance is currently offline  Lance
Messages: 537
Registered: March 2007
To be able to read & render a pdf file from within U++ program is definitely something desirable.

This C project/repo might be a good starting point. It's in Apache 2.0 license which is quite permissive. Adapting it to U++ and adding drawing capability should not be too difficult.
Re: Pdf parser/viewer [message #60053 is a reply to message #58214] Sun, 23 July 2023 15:51 Go to previous message
forlano is currently offline  forlano
Messages: 1194
Registered: March 2006
Location: Italy
Senior Contributor

I wonder if there have been news about a pdf viewer in the meantime.

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