Fix size for HiDPI screens

[esthet1cs]

JabRef version 3.6 on
Debian Linux (Sid)

It seems that Java doesn't recognize the screen setting from my window manager. It would be great to have the possibility to configure Jabref for HiDPI screens from the options menu. It is possible to use a bigger font size for the table, but the menu etc. stay quite tiny..

Steps to reproduce:

1. start Jabref in a window manager that is configured for a HiDPI screen, in my case Debian Linux (Sid) + Cinnamon (configured for HiDPI)
2. ...
3. ...

Put the excerpt of the log file here

[koppor]

Thank you for the report. This refs #113 - "Should also work at unusual setups". We unfortunately currently have no money to pay someone for that. Thus, it depends on the availability of our free time. - If you can spend some more time, we would like to encourage you to check https://help.jabref.org/en/FAQcontributing - especially the part asking for improvement of our help pages https://help.jabref.org/en/. We have plenty of open issues there: https://github.com/JabRef/help.jabref.org/issues/

[stefan-kolb]

I now have a hiDPI screen. Maybe I'll have some time to investigate this in the next months.

[stefan-kolb]

Thank you for your report 👍
This should be fixed/improved in current master. Please try the latest build from http://builds.jabref.org/master.

[koppor]

Java 9 also improves support: http://openjdk.java.net/jeps/263

(found via https://www.sitepoint.com/inside-java-9-part-i/)

[wolfgang-noichl]

JabRef 5.0--2020-03-06--2e6f433
Linux 5.4.0-31-generic amd64
Java 13.0.2
Xfce 4.14

Here, everything looks nice except the font size is still not scaled. I think under Xfce the relevant attribute is changed by xfconf-query -c xsettings -p /Gdk/WindowScalingFactor -s 2, if that somehow helps. Just switching font sizes within JabRef doesn't really solve the issue if you have to switch between a non-4K notebook screen and a 4K external screen :-/

[koppor]

This refs #5498, doesn't it? - Should we open a new issue? Do you want an issue to be opened? I think, this issue does not fully match your detail @wolfgang-noichl

[wolfgang-noichl]

Yeah, I think it's the same, sorry for re-posting.