RFR: 8320965: Scrolling on a touch enabled display fails on Wayland [v4]

[Kevin Rushforth]

On Tue, 20 Feb 2024 12:16:12 GMT, Jose Pereda <jpereda at openjdk.org> wrote:

>> This PR replaces the deprecated `gdk_pointer_grab` with `gdk_seat_grab`, and `gdk_pointer_ungrab ` with `gdk_seat_ungrab`, using runtime checks and wrapped functions for GTK 3.20+ (so systems without it still run with GTK 3.8+), and fixes the dragging issue on Wayland.
>
> Jose Pereda has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Revert changes and add touch mask to gdk pointer grab function

This is a much less intrusive fix. The tests are indeed green now with no regressions. I don't have access to a Lunux system with a touch enabled display to test it on, but as long as you've verified that it fixes the problem, it's a +1 from me.

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PR Review: https://git.openjdk.org/jfx/pull/1305#pullrequestreview-1894647152