Naively, this seems to me like due to fractional scaling. The application or part of it could have a ceiled version of the actual scale, the same way wayland protocol has the issue.
> somewhere in KMainWindow so all KDE applications benefit from it automatically and have a similar look? It seems to me like a good idea. Le ven. 24 déc. 2021 à 10:48, Alexander Semke <alexander.se...@web.de> a écrit : > Hi all, > > we've got a problem reported where a macOs user complained about blurrish > icons and texts in the main toolbar on his iMac 27" 5K. The problem is also > reproducible for other 4K monitors and for macbook's Retina displays. > > I did a screenshot of LabPlot, Kate and Numbers: > https://imgur.com/a/IR0iVNj > > Here, crystal clear icons and texts in Kate and very blurrish in LabPlot. > In > both applications > > QApplication::setAttribute(Qt::AA_EnableHighDpiScaling); > QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps); > > are set. What else are we missing in LabPlot? Does somebody has a hint > here? > > > Also, while looking into this issue I became aware of > QMainWindow::setUnifiedTitleAndToolbarOnMac(). When setting it to 'true' > the > toolbar merges together with the window title bar which seems to be the > standard on mac. On the screenshot above I set it to 'true' in LabPlot and > it's similar to "Numbers" now. Kate and Dolphin on mac don't seem to set > this > property, I didn't check any other applications. > > Should we add something like > > #ifdef Q_OS_MAC > setUnifiedTitleAndToolbarOnMac(true); > #endif > > somewhere in KMainWindow so all KDE applications benefit from it > automatically > and have a similar look? > > > Regards, > Alexander > > > > -- Méven