Re: [platform] UI scaling of a platform application in 2025

My KDE system is set to 175% and I am using

-J-Dflatlaf.uiScale=0.875 -J-Dsun.java2d.uiScale=2

which works better than letting FlatLaF scale by 1.75 because it also scales the images (e.g. toolbar buttons)

I don't know about JavaFX though.


Am 02.10.25 um 08:17 schrieb Patrik Karlström:
> Due to a (now fixed) WorldWind/JOGL bug regarding mouse coordinate translation I had to do a workaround with regard to UI scaling of a platform application.
> 
> My solution was to have "-J-Dsun.java2d.uiScale=1 -J-Dprism.allowhidpi=false -J-Dflatlaf.uiScale=1" in the default_option and scale the UI by myself depending on the value of --fontsize.
> 
> This was around 2018 or similar and has served me well, but now I read something about that --fontsize is about to get deprecated/discouraged.
> 
> Any suggestions on what is best practice if I want a Swing+FlatLAF+JavaFX application respect the OS default UI scaling, but with the possibility to override?
> 
> /Patrik


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