GTK4 prep: Use event controllers for open and scrubbing

[leolost2605]

Also remove the grab last focused window operation.

[leolost2605]

Just a quick note since I've seen some activity here: I think this PR doesn't work on X not 100% sure though. On that matter: Should we try our best to keep X compatability in GTK4 or should we rather do something similar to dock?

[danirabbit]

@leolost2605 Yeah we have to keep a working X11 session until the new a11y stack is available. So I think it'd be better to work on getting things as prepped as possible without introducing any breakage for now

[zeebok]

@leolost2605 There are now conflicts with master to resolve

[leolost2605]

Conflicts are resolved and this should now keep exactly the same behavior as current master

[danirabbit]

afaict scrubbing works as expected, everything seems to work okay, except the panel drag behavior doesn't work in X11. It looks like you used GestureMultiPress there, should it be instead a GestureDrag?

[leolost2605]

afaict scrubbing works as expected, everything seems to work okay, except the panel drag behavior doesn't work in X11. It looks like you used GestureMultiPress there, should it be instead a GestureDrag?

It's also currently broken on master but I now found a fix that works in tandem with this so I fixed it here :)

[danirabbit]

Nice job! I can confirm this works in X11 and Wayland now :)