Pointer constraints

[ids1024]

Depends on Smithay/smithay#872.

For some reason, pointer confinement isn't working correctly here at the moment, even though the code matches Anvil...

May need solution to Smithay/smithay#1126 for behavior to be correct.

[ids1024]

Updated to make use of Smithay/smithay#1137. Seems to be working fairly well now. In earlier versions I had an issue with applications that I think the frame changes fix.

[ids1024]

Hm, looks like this introduces an issue with moving the pointer between monitors...

[ids1024]

Okay, just needed to move the output_geometry clamping to use the new output when the cursor has moved.

[Drakulix]

Looks pretty good, just some interactions around compositor-drawn/managed objects, where I am not certain this is a 100% correct.

[Vixea]

I'm 100% certain that it's not correct I tested the pr for the lols, it crashes whenever the cursor interacts with compositor related objects(not always in all cases though)

[Vixea]

Ok figured out one reproduction case moving the pointer to the edge of the primary screen on the right side or in this case the side that doesn't have a second monitor

[ids1024]

@Vixea Good catch. Looks like these a possible panic in the clamp call since I didn't put things in the right order there... that part is easy enough, anyway.

[Vixea]

Huh, whenever clicking on windows that use pointer constraints when constrained the cursor jumps to look straight down(apps in question are games) though maybe that is a relative pointer bug... hmm.

[ids1024]

Hm, I had some weird behavior like that before, but it seemed to not be a problem in this PR. But I just tested OpenMW. I'll have to try some other things.

[Vixea]

I used Minecraft though I've found some other regressions that I think were caused by the fullscreen/maximize refractors

[ids1024]

I guess I was just moving around and didn't even end up clicking in my quick test... seems there's an issue in Smithay here: Smithay/smithay#1148.

That wasn't happening in anvil since it's missing a call to frame (Smithay/smithay#1149).