#226 Utilize QPDF & OCRmyPDF as backend to make Xournal advanced PDF editor

[nokia808]

Hi. I'm not sure if Xournal still under development or it is dead application.
If you are interested in changing Xournal into advanced PDF editor, then I suggest on you to utilize 2 great backends:

1) QPDF:
https://github.com/qpdf/qpdf
http://qpdf.sourceforge.net/files/qpdf-manual.html

2) OCRmyPDF:
https://github.com/jbarlow83/OCRmyPDF

I'm ready to donate you money to assist you to evolute your pdfslicer from just simple editor to advanced editor.
I have only following conditions for that:

A) all new features remain open source & free for community,
B) Xournal remain open source & free for community,
C) road map of development will aim for include all powers of QPDF & OCRmyPDF backends

If you accept for that, then inform me about how it cost you to cover time & resources that you will consume, so as to see how much I can cover from my side.

From my side I can send you money by the following ways:

• by buying Bitcoin then send them to you,
• by pre-paid credit card. You should give me link of donation to use them to donate you on that link,
• by real money transfer by a real exchanger to send money to your exchanger receiver that you select & give me his address. I do not recommend this method

Please notice that PayPal is of no help because it is not available for those who reside inside Iraq like me.

[Denis Auroux]

Thank you for the suggestion. However, xournal is designed for taking
handwritten notes using a stylus, it is not a PDF editor. It just
happens to let you take handwritten notes on top of PDF files. And so
the priority is to keep the user interface simple, not to become a
better PDF editor.

Concretely, I don't see why QPDF would have any benefits in terms of
functionality over the Poppler library we are already using. It would be
desirable to add to xournal features to manipulate the pages of the
document more effectively (reorder pages, merge documents, rotate and
scale pages), but this is a matter of designing the right user interface
for this, not an issue with the backend.

Also, OCR on typed PDF is not part of our mission -- this would be
reasonable processing to do ahead of editing in xournal, but it has
nothing to do with handwritten annotation. Handwritten OCR would be
great but is a hard problem.

So: I'm sorry but if your goal is to have a graphical frontend for QPDF
and OCRmyPDF then you should try to motivate someone to write one --
however this is not xournal's mission or natural feature set.

Denis