[QGIS-Developer] Move GCP in georeferencer on hidpi display

[uclaros]

Hi list,
the move GCP tool in the georeferencer is a little pita to use, needing
pixel perfect aiming. I tried to remedy this with PR
https://github.com/qgis/QGIS/pull/37256 but Nyall raised the issue regarding
hidpi displays with this approach.
Since I don't have a hidpi display to test, can someone test and give some
feedback? I'd be interested on the following:
- What's the current usability compared to low vs hidpi on that tool?
- What's the usability with the PR as is on hidpi?
- What's a good value for
https://github.com/qgis/QGIS/blob/976e624a762d5713f753a2cdf6e2b6338a179e71/src/app/georeferencer/qgsgeorefmainwindow.cpp#L512
on a hidpi setup?

Thanks!



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