Pdf/A compliency + embedded XML invoices

DavBfr / dart_pdf

Pdf creation module for dart/flutter

https://pub.dev/packages/pdf

Apache License 2.0

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Pdf/A compliency + embedded XML invoices #1582

Open ilaurillard opened 10 months ago

ilaurillard commented 10 months ago

Hello, i made some progress creating PDF/A 3b complient documents using your library and so far i can validate against Mustang and Vera (mainly its about a metadata xml and a colorprofile).

Also i added support for adding Attachments so we can embed Invoice-XML for electroning billing systems.

If you are interested, please contact me

DavBfr commented 10 months ago

Yes, that would be a nice addition to the library.

ilaurillard commented 10 months ago

Ok, we need to have 3 changes to the low level pdf creation.

a color profile stream and an OutputIntent
we need to patch the Meta-Data object (missing Type!)
the attached files (streams) as well as references to them and an entry in the catalogue, pointing to the embedded files

the attached files are using the /Names directive - i dont know what happens if you mix it with annotations that are alos using /Names ... this has to be examined

If you want i can show you my additions or if you like i could prepare an merge request..

DavBfr commented 10 months ago

Yes, a Merge request works, it'll be easier to see and test.

I thought PDF/A needed a specific order in which the objects are in the file, with a specific TOC at the beginning.

bobosette commented 7 months ago

Hi. Some news about the pdf/a feature??

CLNMR commented 1 month ago

Hi @ilaurillard, did you get around to creating the pull request? I would love to check out the embedding functionality!