bhrebec/xwayland-satellite
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fix: take ownership of _NET_WM_CM_S0

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EWMH section 8.1 requires that compositing window managers take
ownership of `_NET_WM_CM_Sn` for each screen `n` they manage (in the
case of `satellite`, this is just screen 0).

The Avalonia UI toolkit needs this atom to be owned in order to
provide transparent window support. Resolves #376.
This commit is contained in:
En-En 2026-02-20 00:04:24 +00:00 • committed by Supreeeme
parent 33c344fee5
commit ecde06ed3a
1 changed files with 9 additions and 0 deletions
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9
src/xstate/mod.rs
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@ -333,6 +333,14 @@ impl XState {
time: x::CURRENT_TIME,
})
.unwrap();
self.connection
.send_and_check_request(&x::SetSelectionOwner {
owner: self.wm_window,
selection: self.atoms.net_wm_cm_s0,
time: x::CURRENT_TIME,
})
.unwrap();
}
pub fn handle_events(&mut self, server_state: &mut super::RealServerState) {
@ -1034,6 +1042,7 @@ xcb::atoms_struct! {
wm_transient_for => b"WM_TRANSIENT_FOR" only_if_exists = false,
wm_state => b"WM_STATE" only_if_exists = false,
wm_s0 => b"WM_S0" only_if_exists = false,
net_wm_cm_s0 => b"_NET_WM_CM_S0" only_if_exists = false,
wm_check => b"_NET_SUPPORTING_WM_CHECK" only_if_exists = false,
net_wm_name => b"_NET_WM_NAME" only_if_exists = false,
wm_pid => b"_NET_WM_PID" only_if_exists = false,