feat: Snap Window Edges to Close Output Edges

[Koranir]

This is a feature that KDE has called "Snap Zones" which I find to be very useful for organizing floating layouts (especially small widgets like the Spotify miniplayer, demonstrated in the video).

When resizing or moving a floating/sticky window, any edge that gets too close to one of the currently active output's edges will be snapped into the output's edge, mitigating any pixel-perfect movements you would have to do otherwise to get window edges to align properly.

magnetc-window.mp4

[Drakulix]

My initial impression of this code-wise is very good. Thanks for working on this!

I'll give it an in-depth review (and most likely merge as is), if @pop-os/ux agrees with this feature.

[Drakulix]

So the verdict is, that we want this behind a cosmic-comp config setting that is off by default (but will be exposed in cosmic-settings).

Could you add this to the PR? If not that is also totally fine, in that case I'll do it, once I have the time.

In any case thanks for working on this 👍

[Koranir]

So the verdict is, that we want this behind a cosmic-comp config setting that is off by default (but will be exposed in cosmic-settings).

Could you add this to the PR?

Done. I've also made the actual snapping distance configurable too.

[Drakulix]

Done. I've also made the actual snapping distance configurable too.

Great! I think that makes for a great config option, though we will probably expose this in cosmic-settings purely as a toggle for now.

[Drakulix]

Thanks again!

[Koranir]

Aur naur, I forgot to rename the window_snap_threshold field/argument names for the MoveGrabs. Not a bug or anything but it's inconsistent naming :P

[Drakulix]

Aur naur, I forgot to rename the window_snap_threshold field/argument names for the MoveGrabs. Not a bug or anything but it's inconsistent naming :P

If you feel like it, feel free to submit a PR correcting that. :)