[okular] [Bug 413819] highlight annotation not carried over to pdfjs

[Tobias Deiminger]

https://bugs.kde.org/show_bug.cgi?id=413819

--- Comment #9 from Tobias Deiminger <haxtibal at posteo.de> ---
(In reply to ghavamikia from comment #8)
> opened same doc in foxit and made new annotation and saved (see screenshot)
> opened this is firefox... now there nothing at all....
> opened same in okular... now okular highlight is missing! (see screenshot)
> for what it's worth it opens the same in adobe, okular note missing..
> so I've attached the pdf...
Uncompressing object streams reveals the following:
- 1st page annotation dictionary (it's something like a TOC for annotations)
contains a "null object" where there ought be an indirect reference to your
"okular note"
- and, in the whole document there's no occurence of an annotation object with
/Contents (okular note)

It quite clearly indicates Foxit has not only made your "okular note"
invisible, but it actually deleted it completely.

The first issue (newly created Okular highlights not visible in PDF.js) is very
likely because poppler doesn't write AP, and PDF.js fails to display something
without AP. It's a known issue in both projects.

> I worry if I do this again in 24 hours I'll get yet another result, I woish
> I had sent you the pdf and screenshots from the original bug report now...

If you're able to reproduce the "deleted annotation" behavior, you should file
a bug report to Foxit.

I'd suggest to close the Okular bug here.
- Okular can't do anything about Foxit deleting annotations
- Okular can't do anything about AP. That's up to poppler. I think we're aware
over there, shall we open a dedicated poppler issue for it anyway?

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