KDE theming inconsistent since qt5 apps

Question

I have really strange KDE theming going on and have tried several things without any of them working.
Firstly I'm using i3, with some KDE apps.
I think the issue is kde5 apps in i3 refuse to get any widget/theming applied. I've tried breezy, oxygen etc.
Basically apps like:
- clipper
- konsole
- kate
- systemsettings5
http://ibin.co/1rvQsUchNttb
http://ibin.co/1rvRBXQpoyfD
Are missing their KDE themes/widget/fonts/colors etc. Specifically:
- Missing icons next to the button
- Font settings are ignored
- Color settings
- Save as dialog, looks just horrible and wrong
Apps that are working:
- kontact
- krusader
I'm pretty sure I tried installing the whole of plasma-meta and applying the theme.
But I'm willing to try whatever again to fix this.
Any ideas?

Answer 1

divansantana wrote:
Goresome wrote:It fails to read settings because it doesn't believe you are in kde. Try setting DESKTOP_SESSION=kde (or plasma)
Excellent thanks, one step in the right direction.
Never had to do this in kde4..., must be a qt5 thing...
I don't necessarily want to set this globally.
It's currently set to i3-with-shmlog
Hmm, I'll try think of a nice way to set it for certain qt5 apps.
Is there a qt5 config file where I can set this env variable?
I'm not aware if qt5 even has config file, however here is the root of evil:
static inline QByteArray detectDesktopEnvironment()
const QByteArray xdgCurrentDesktop = qgetenv("XDG_CURRENT_DESKTOP");
if (!xdgCurrentDesktop.isEmpty())
return xdgCurrentDesktop.toUpper(); // KDE, GNOME, UNITY, LXDE, MATE, XFCE...
// Classic fallbacks
if (!qEnvironmentVariableIsEmpty("KDE_FULL_SESSION"))
return QByteArrayLiteral("KDE");
if (!qEnvironmentVariableIsEmpty("GNOME_DESKTOP_SESSION_ID"))
return QByteArrayLiteral("GNOME");
// Fallback to checking $DESKTOP_SESSION (unreliable)
const QByteArray desktopSession = qgetenv("DESKTOP_SESSION");
if (desktopSession == "gnome")
return QByteArrayLiteral("GNOME");
if (desktopSession == "xfce")
return QByteArrayLiteral("XFCE");
return QByteArrayLiteral("UNKNOWN");
qtbase src/platformsupport/services/genericunix/qgenericunixservices.cpp
When its UNKNOWN it simply fallbacks to Fusion.
Last edited by Goresome (2015-02-19 09:46:41)