I found this the other day and I'm shocked how awesome it is. Its way more responsive then the browser based touch UI plugin. I think it might even do babystepping. I have it running on a Raspberry Pi 3 B+ on an official 7" touchscreen. I have also been able to get to work on my waveshare 3.5 screen with Raspberry Pi 4 Model B.
Project
https://github.com/Z-Bolt/OctoScreen
Raspberry 7" touch screen.
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