Tooltips of GTK applications are unreadable within KDE

My system is openSUSE 42.1 with Plasma 5.

I have some GTK applications installed as well, and I'm experiencing a rather annoying behaviour from them.

Namely, the tooltips of these apps are almost unreadable, being white text over light grey background, as you can see on the picture

I can't find where and how to change this setting; only non-KDE apps are affected, and not all of them: Gimp, Inkscape, Filezilla are amongst them, while Firefox, Libreoffice, Handbrake display the tooltips in a readable way.

Sekhemty

Posted 2016-07-13T14:48:30.940

Reputation: 6 654

Appears to be a more general case of https://unix.stackexchange.com/questions/446089/gimp-tooltips-are-unreadable-white-on-white

– PJTraill – 2018-12-16T14:15:54.500

Answers

The issue is due to a partial override of GTK colors by means of KDE style.

Open System Settings > Colors, deselect Apply colors to non-Qt applications, restart the GTK application (e.g. Gimp). This breaks the feeling that all applications share the same style but tooltips will be again readable in both Qt and GTK applications.

Narcolessico

Posted 2016-07-13T14:48:30.940

Reputation: 141

Thank-you very much; I have quoted this answer at https://unix.stackexchange.com/questions/446089/gimp-tooltips-are-unreadable-white-on-white/489316#489316 because it looks better than the answer https://unix.stackexchange.com/a/446090/199532 given there.

– PJTraill – 2018-12-16T14:57:39.040

No problem, but please note that you mentioned the wrong comment author in that comment ;) – Narcolessico – 2018-12-17T16:06:27.380

Sorry, what a blunderer! (It was getting too late.) Anyway, it is fixed now. – PJTraill – 2018-12-17T21:05:47.437

I have the same issue in Linuc Mint KDE edition. Luckily I found an answer at the ArchLinux wiki:

To change the colors in GTK2 applications, find the section for tooltips in the .gtkrc-2.0 file and change it. For GTK3 application two files need to be changed, gtk.css and settings.ini.

Source: https://wiki.archlinux.org/index.php/KDE

svara

Posted 2016-07-13T14:48:30.940

Reputation: 31

I did find .gtkrc-2.0 (and a ~/.config/gtkrc-2.0), but it did not have a tooltips section, though it did say include "/usr/share/themes/Breeze/gtk-2.0/gtkrc" & include "/etc/gtk-2.0/gtkrc" of which only the former refers to tooltips, with gtk-color-scheme = "tooltip_fg_color:#fcfcfc" & gtk-color-scheme = "tooltip_bg_color:#31363b". Would putting those in my own file with updated values have the desired effect? – PJTraill – 2018-12-16T15:29:53.597