<Swing Dev> HiDPI Fractional Scaling on GTK

[Matthew Wallace]

I'd like to use fractional scaling in my swing application on Linux (GTK).
My application already works perfectly with fractional scaling on Windows
but on Linux only integer values are supported.  Could anyone familiar with
this outline for me the work needed to support fractional scaling on
Linux?  I'm willing to do some hacking to make this work, but I really have
no idea where to start or if it's even feasible.  Any help is greatly
appreciated.
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