Add surface intersection observer protocol.

[outfoxxed]

This protocol is intended to allow clients such as bars and docks to dodge windows that would otherwise be placed over/under them. This is often desired for large widgets and tall bars.

[vaxerski]

what's the use of this over #7?

[outfoxxed]

#7 doesn't have a way to determine the position of a layer surface or the windows relative to it, but that could be included somehow. This one has a much more targeted use case but we could accomplish it both ways.

Also 7 is more likely to be accepted in w-p imo.

[vaxerski]

I see very little chance of this being in w-p and neither do you probably want to discuss for years with folks there regarding all the ""issues"" this has.

#7 doesn't have a way to determine the position of a layer surface or the windows relative to it, but that could be included somehow. This one has a much more targeted use case but we could accomplish it both ways.

Why? With a layer, you know where it is. By protocol. You ask to put it somewhere.

[outfoxxed]

I see very little chance of this being in w-p

I dont see it happening before ext layer is in at least.

Why? With a layer, you know where it is. By protocol. You ask to put it somewhere.

That doesn't work once you have more than one layer on an edge, but its definitely fine in the general case.

[vnuxa]

That doesn't work once you have more than one layer on an edge, but its definitely fine in the general case.

id say most compositors should have some form of tracking layer positioning and size via ipc
and once a compositor agnostic solution is made in wayland protcols then clients could use that instead