Freecad UI broken

[deedee]

I have this issue on quite a few of my systems, Freecad’s UI is broken:

Version: FreeCAD 0.19, Libs: 0.19R24415 (Git)
Qt 5.15.5+kde+r167-1
Python 3.10.5-1
Coin 4.0.0.f4e446-3
Branch: unstable

Freecad is completely unusable. Any hints what could cause this?

[anon89812132]

Few issues with the Freecad UI that are known is due the way you set the theme.

Kvantum lock toolbars in freecad, librecad etc

So, if you set your better workspace in FreeCAD without Kvnatum, and once you are happy with it apply a Kvantum theme, doesn’t work?

[Solved] Dropdown menu in Freecad has no background

Hello, I have a problem with Freecad 0.19. I’m not sure if it a problem from OS or software itself, so I think I will ask here and Freecad forum too. I have tried searching but did not see anyone ask about it. When I use Freecad and click on every Dropdown menu it has no background, only text floating on the list, make it hard to read. I have tried change Gnome’s theme but it not solved the problem. Never happen before when I use Freecad 0.18. [12:38:04_12_02_21][12:56:34_12_02_21]

Unless is something else, you should be specific, on my end all looks fine.

[deedee]

Thanks for the pointer. Indeed my other workstations did not have kvantum so i ran ‘pacman -Rcs kvantum’ resulting in:

[2022-07-06T05:26:25+0200] [ALPM] removed kvantum-theme-matchama (20191118-1)
[2022-07-06T05:26:25+0200] [ALPM] removed kvantum-theme-matcha (20190810-1)
[2022-07-06T05:26:25+0200] [ALPM] removed kvantum-manjaro (0.13.5+1+g333aa00-1)
[2022-07-06T05:26:25+0200] [ALPM] removed kvantum (1.0.0-1)
[2022-07-06T05:26:25+0200] [ALPM] removed kwindowsystem (5.91.0-1)

I rebooted after that but the problem remained unchanged, any leftovers i might have missed? or should i assume for now that kvantum was not responsible?

[deedee]

you should be specific

Would love to share a screenshot, but I’m not allowed to do that yet. I’ll try to describe as best i can. 3D view and controls works fine, menu’s appear, but hovering them results in glitched text. Menu’s are also drawn in the wrong place and icons are chopped or missing.

I’m running Manjaro XFCE, i believe originally a spin from 2017 as base install.

[anon89812132]

@deedee

I’m not allowed to do that yet.

This will help you do that [HowTo] Post screenshots and links

@deedee

problem remained unchanged

You need to check what are you using for Qt applications and if you have an environment variable.
Personally i prefer qt5ct.

@deedee

i believe originally a spin from 2017

If you took care of the updates so far and also followed the changes that came with, as for example this

@philm

• If you use qt5-styleplugins (AUR), rebuild or remove it:

pamac build qt5-styleplugins

then that should be an easy fix.
Otherwise maybe this will help

How to apply themes for kde applications?

I concur. From what i recall, QT_QPA_PLATFORMTHERE=qt5ct (at the time of qt5ct, now qt6ct) was set in ~/.profile, and qt5ct was configured to use kvantum. One could also directly use export QT_STYLE_OVERRIDE=kvantum instead in order not to use qt5ct as intermediary. (I now have those commented since i switched to KDE.)

[deedee]

I’m aware of the problems with qt5-styleplugins, but since Freecad was running without crashing i found it difficult to blame it on styleplugins.

While overthinking the issue i concluded the rendering of the fonts was the only problem. And then it dawned on me, the affected systems have low DPI monitors.

I then ran Freecad using the following line:
QT_FONT_DPI=96 freecad

This turned out to be the fix. Apparently display DPI isn’t properly applied or detected by QT?

EDIT:
Seems to be a known issue: https://forum.freecadweb.org/viewtopic.php?p=461864#p461864

Best solution is to run freecad like this:
QT_AUTO_SCREEN_SCALE_FACTOR=0 QT_SCALE_FACTOR=1. freecad