Added niri WM support

[Eddio0141]

Currently niri IPC doesn't have enough information to let you know where tiled windows exist in

Floating windows works just fine

closes #60

[TheFivery]

The rabbit-hole has lead me here! Will keep an eye out for the Niri support merge! Thank you Eddio0141!

[AlfredoSequeida]

Awesome, thank you for taking this on! I have a few questions/suggestions.

• I think we should move the gaps constant to the constants.py file, this way it becomes part of the config and people can adjust the gaps based on what their setting is rather than hard-coding the value.
• Have you tested this with multiple monitors? I'm curious to see how that works with the logic for determining window positions.

[Eddio0141]

Thanks!

• Yeah that is true, the gaps needs to be set properly since this only applies to my config
• The window position calculation works to an extent though the calculation isn't complete to be properly usable, and current limit by Niri to make it work. The calculation assumes the focused window is always on the left side of a monitor, which isn't always true for windows that isn't 100% width, and Niri doesn't give more info related to this, so I left the WIP work there for now. Gotta wait for future changes by Niri to complete this

[Eddio0141]

Though it would be possible to know the window position if window focus events are tracked and use that to calculate additional offset from the left side of the monitor

Which does mean there would have be a service just for Niri to do this...

Might go and do that for the sake of implementation, future change to Niri can make this simpler with another MR to fix :)

[TheFivery]

I was mid-day-dream thinking about this (saw the recent video Alfredo!)... one of the settings in Niri that I found and played with is the "tab-indicator" layout definition, which I'm thinking would bring it's own considerations with it's properties like "place-within-column", "width" and "gap". Especially place-within-column, which forces it's own space within the stacked/tabbed window column instead of discretely showing within the global window gaps you set.

Here's a little screenshot to illustrate.

Normal windows with gaps

Tabbed/stacked windows with the above mentioned tab-indicator property values

[Eddio0141]

Ok yeah there's more edge cases I'd have to consider :/