ext_toplevel_state: new protocol implementation #2909
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Based on the wlroots draft implementation of the protocol by @tokyo4j (available here), backported to wlroots 0.19: https://github.com/dkondor/wlroots/tree/ext_toplevel
Note: this is currently a bit incomplete (output information is not sent and additional states like always on top are not supported); I'll update it as I have some time. Also, currently, the -state protocol is always enabled -- it could make sense to add a setting for it in case a user would like to only expose the -info protocol.
I've tested so far only briefly with my Cairo-Dock implementation of the same protocol:
Cairo-Dock/cairo-dock-core#192
and will test more in the coming weeks.