Bug 419732

Summary:	Can not display CJK characters with Adobe's OTF Fonts
Product:	[Applications] okular	Reporter:	hanyd2010
Component:	PDF backend	Assignee:	Okular developers <okular-devel>
Status:	CLOSED NOT A BUG
Severity:	critical	CC:	aacid, yurchor
Priority:	NOR
Version First Reported In:	1.9.3
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	fig: my okular wont show cjk characters same content in firefox: works as expected sample PDF file

Description hanyd2010 2020-04-06 15:57:22 UTC

Created attachment 127325 [details]
fig: my okular wont show cjk characters

# SUMMARY

Can not display CJK characters with Adobe's OTF Fonts

# STEPS TO REPRODUCE
1. I opened a pdf file with CJK characters. This pdf file uses 'Adobe Song Std.otf', which could be downloaded here: [Adobe Song Std.otf](https://github.com/mingchen/mac-osx-chinese-fonts/blob/master/Adobe%20Simple%20Chinese%20Fonts/AdobeSongStd-Light.otf)

# OBSERVED RESULT

1. All CJK Characters can not display (showed nothing), but English char and numeric characters could display.
2. Opening the same pdf file with chrome/chromium or firefox or adobe acrobat reader works without problems.

# EXPECTED RESULT

Show CJK characters.

# SOFTWARE/OS VERSIONS

(available in About System)
Operating System: Arch Linux 
KDE Plasma Version: 5.18.4
KDE Frameworks Version: 5.68.0
Qt Version: 5.14.2
Kernel Version: 5.5.13-arch2-1
OS Type: 64-bit
Processors: 12 × Intel® Core™ i7-8750H CPU @ 2.20GHz
Memory: 15.3 GiB

# ADDITIONAL INFORMATION

PDF file was generated by pandoc, markdown to pdf tool. Using ctexart with arg "fontset=adobe"

Comment 1 hanyd2010 2020-04-06 16:03:19 UTC

Created attachment 127326 [details]
same content in firefox: works as expected

Comment 2 Yuri Chornoivan 2020-04-06 16:08:25 UTC

Can you share the PDF file (or its sample to reproduce the problem), please?

Can the problem be reproduced in other poppler-based applications (Evince, qpdfview)?

Thanks in advance for your answers.

Comment 3 hanyd2010 2020-04-06 16:13:26 UTC

Created attachment 127327 [details]
sample PDF file

Comment 4 hanyd2010 2020-04-06 16:14:19 UTC

(In reply to Yuri Chornoivan from comment #2)
> Can you share the PDF file (or its sample to reproduce the problem), please?
> 
> Can the problem be reproduced in other poppler-based applications (Evince,
> qpdfview)?
> 
> Thanks in advance for your answers.

attached a sample pdf file.

The problem CAN be reproduced in Evince.

Comment 5 Yuri Chornoivan 2020-04-06 16:18:13 UTC

Please report the bug against poppler:

https://gitlab.freedesktop.org/poppler/poppler/issues/new?issue

The sample file is displayed fine here btw (Okular 20.07.70, poppler 0.87, Mageia 7).

Comment 6 hanyd2010 2020-04-06 16:25:40 UTC

(In reply to Yuri Chornoivan from comment #5)
> Please report the bug against poppler:
> 
> https://gitlab.freedesktop.org/poppler/poppler/issues/new?issue
> 
> The sample file is displayed fine here btw (Okular 20.07.70, poppler 0.87,
> Mageia 7).

Thanks for your reply!

Comment 7 Albert Astals Cid 2020-04-06 21:05:00 UTC

Before doing that make sure you installed poppler-data.

Because even if pacman says

poppler-data (optional) - encoding data to display PDF documents containing CJK characters

It would seem to me you don't have it installed

Comment 8 hanyd2010 2020-04-07 00:15:18 UTC

(In reply to Albert Astals Cid from comment #7)
> Before doing that make sure you installed poppler-data.
> 
> Because even if pacman says
> 
> poppler-data (optional) - encoding data to display PDF documents containing
> CJK characters
> 
> It would seem to me you don't have it installed

---

Thanks! `poppler-data` helped me solve this out!