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Phalkon

Member

Registered: 2014-10-19

Posts: 117

[SOLVED] i3wm - how to theme qt applications

Hi,

in XFCE QT apps mimic the gtk theme I'm using, but in i3wm they don't.

Is there a way to make qt applications mimic gtk theme like they do by default in DE?

Last edited by Phalkon (2016-06-07 13:40:30)

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ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,785

Re: [SOLVED] i3wm - how to theme qt applications

In what way?  Titlebars? No.  Icons, sliders. progress bars, fonts? https://wiki.archlinux.org/index.php/GTK%2B#Themes

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aouelete

Member

Registered: 2015-05-27

Posts: 30

Re: [SOLVED] i3wm - how to theme qt applications

I'm pretty sure you can use the environment variable

QT_STYLE_OVERIDE=GTK+

to make QT5 applications use the GTK theme.

tmp-meteque

Member

Registered: 2015-12-11

Posts: 30

Re: [SOLVED] i3wm - how to theme qt applications

Arch wiki to the rescue

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Phalkon

Member

Registered: 2014-10-19

Posts: 117

Re: [SOLVED] i3wm - how to theme qt applications

In what way?  Titlebars? No.  Icons, sliders. progress bars, fonts? https://wiki.archlinux.org/index.php/GTK%2B#Themes

Well I have those variables set. GTK2 applications display correctly. But QT don't.

I'm pretty sure you can use the environment variable

QT_STYLE_OVERIDE=GTK+

to make QT5 applications use the GTK theme.

This seemed like it would be it, but it didn't work.
Maybe kdenlive, okular and qbittorrent aren't QT5? I don't know.

Arch wiki to the rescue

Yes, I've read this. It seemed like I had to install something the first time I've read it, but I didn't have to in XFCE. I thought it had to be some variable I was missing.

And it was.

~/.config/Trolltech.conf
...
[Qt]
style=GTK+
...

At least for kdenlive and okular.

But qbittorrent still doesn't use GTK theme, even though it did in XFCE, so I know it can be done.

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Why Linux? Because it doesn't hide anything from you. It puts you so closely in control of your machine that you can feel its heartbeat.

metak

Member

Registered: 2009-09-27

Posts: 198

Re: [SOLVED] i3wm - how to theme qt applications

Maybe kdenlive, okular and qbittorrent aren't QT5? I don't know.

kdenlive is qt5, okular seems to be still on qt4? and qbittorrent is also qt5.
To theme qt apps in i3wm run 'qtconfig-qt4'  to configure qt4 applications and install 'qt5ct' to configure qt5 applications.

Phalkon

Member

Registered: 2014-10-19

Posts: 117

Re: [SOLVED] i3wm - how to theme qt applications

Maybe kdenlive, okular and qbittorrent aren't QT5? I don't know.

kdenlive is qt5, okular seems to be still on qt4? and qbittorrent is also qt5.
To theme qt apps in i3wm run 'qtconfig-qt4'  to configure qt4 applications and install 'qt5ct' to configure qt5 applications.

After installation 'qt5ct' and setting the style to GTK+, kdenlive went back to default theme. At first, it started to mimic gtk theme after setting the ~/.config/Trolltech.conf, but went back to default after installation of qt5ct.
Okular does still mimic the gtk theme and there was no change for qbittorrent (still the default theme).

I tried to change the fonts too, but that had no effect.

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Why Linux? Because it doesn't hide anything from you. It puts you so closely in control of your machine that you can feel its heartbeat.

metak

Member

Registered: 2009-09-27

Posts: 198

Re: [SOLVED] i3wm - how to theme qt applications

Have you set the environment variable after installing qt5rc?
https://wiki.archlinux.org/index.php/Qt … r_than_KDE

Phalkon

Member

Registered: 2014-10-19

Posts: 117

Re: [SOLVED] i3wm - how to theme qt applications

Have you set the environment variable after installing qt5rc?
https://wiki.archlinux.org/index.php/Qt … r_than_KDE

Naturally, I haven't. Thanks. :]

Kdenlive is now trying to mimic gtk theme, but doing really bad job at that.
Nevermind though, I guess I can live with kde in the default theme, I was more interested in okular and qbittorrent, because I use them often.

But is there a way to make a certain qt application ignore the global QT_QPA_PLATFORMTHEME variable?
I tried running it with empty --platformtheme argument, but that didn't work.

Anyways, I guess I can mark this thread solved now.

Thank you all for helping.

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Why Linux? Because it doesn't hide anything from you. It puts you so closely in control of your machine that you can feel its heartbeat.