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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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I wish KDE apps hardcoded their Breeze theme (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

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I use both GNOME and Plasma and various apps from their ecosystems. When using Plasma, GNOME apps look out of place, as they hardcode their Adwaita theme, but they don't suffer from contrast issues and are perfectly usable. When using KDE apps on GNOME on the other hand, the contrast is terrible, the apps look very ugly and are barely usable to the point I wish they hardcoded their Breeze theme so they would work as well as they do on Plasma. I wish KDE apps were more resilient when it comes to theming, so they wouldn't break completely when installed on the "wrong" desktop.

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[–] [email protected] 38 points 1 year ago

That's not a KDE specific issue, it's Qt defaulting to the default ugly old Plastic theme.

KDE uses Qt, but unlike GTK, Qt isn't made for KDE. Qt have their own defaults that are generic and doesn't make any assumption about running on KDE or Gnome. And Gnome doesn't bother providing any configurations to Qt, because they live in their own GTK bubble where nothing else matters. Adwaita just happens to be the default GTK theme regardless.

Ideally, your distro would take care of setting a saner default Qt theme. There's even a Breeze theme for GTK, so they could set it to that and everything would look nice and uniform.

[–] [email protected] 13 points 1 year ago

Look into qt5ct, if you haven't already. That should allow you to retheme QT5 applications so that they behave as you choose even if KDE isn't running.

[–] [email protected] 8 points 1 year ago

Isn't it more a problem of using something like QGnomePlatform and Adwaita-qt? AFAIK they cause a lot of issues and there are plans about discontinuing them in Fedora.

https://fedoraproject.org/wiki/Changes/NoCustomQtThemingForWorkstation

[–] [email protected] 7 points 1 year ago

so they wouldn’t break completely when installed on the “wrong” desktop

the kde apps are made theme agnostics specifically to not interfere with the way other desktops/distro want to theme them, and the gnome desktop is specifically made to not natively handle user themes so as to not interfere with the way apps are supposed to look like, mix that into a bowl and you get ugly kde apps, which one is in the wrong is for you to decide*^1^, but at the end of the day you need another app to handle your qt-theming since gnome doesn't natively support it.

spoiler

*^1^ it's the gnome devs of course