cosmic-comp/src/dbus/mod.rs
2025-08-11 18:47:57 +02:00

93 lines
3.1 KiB
Rust

use crate::state::{BackendData, Common, State};
use anyhow::{Context, Result};
use calloop::{InsertError, LoopHandle, RegistrationToken};
use std::collections::HashMap;
use zbus::blocking::{fdo::DBusProxy, Connection};
#[cfg(feature = "systemd")]
pub mod logind;
mod power;
pub fn init(evlh: &LoopHandle<'static, State>) -> Result<Vec<RegistrationToken>> {
let mut tokens = Vec::new();
match power::init() {
Ok(power_daemon) => {
let (tx, rx) = calloop::channel::channel();
let token = evlh
.insert_source(rx, |event, _, state| match event {
calloop::channel::Event::Msg(_) => {
let nodes = match &mut state.backend {
BackendData::Kms(kms) => {
kms.drm_devices.keys().cloned().collect::<Vec<_>>()
}
_ => Vec::new(),
};
for node in nodes {
if let Err(err) = state.device_changed(node.dev_id()) {
tracing::error!(?err, "Failed to update drm device {}.", node);
}
}
state.refresh_output_config();
()
}
calloop::channel::Event::Closed => (),
})
.map_err(|InsertError { error, .. }| error)
.with_context(|| "Failed to add channel to event_loop")?;
// start helper thread
let result = std::thread::Builder::new()
.name("system76-power-hotplug".to_string())
.spawn(move || {
if let Ok(mut msg_iter) = power_daemon.receive_hot_plug_detect() {
while let Some(msg) = msg_iter.next() {
if tx.send(msg).is_err() {
break;
}
}
}
})
.with_context(|| "Failed to start helper thread");
match result {
Ok(_handle) => {
tokens.push(token);
// detach thread
}
Err(err) => {
evlh.remove(token);
return Err(err);
}
}
}
Err(err) => {
tracing::info!(?err, "Failed to connect to com.system76.PowerDaemon");
}
};
Ok(tokens)
}
/// Updated the D-Bus activation environment with `WAYLAND_DISPLAY` and
/// `DISPLAY` variables.
pub fn ready(common: &Common) -> Result<()> {
let conn = Connection::session()?;
let proxy = DBusProxy::new(&conn)?;
proxy.update_activation_environment(HashMap::from([
("WAYLAND_DISPLAY", common.socket.to_str().unwrap()),
(
"DISPLAY",
&common
.xwayland_state
.as_ref()
.map(|s| format!(":{}", s.display))
.unwrap_or(String::new()),
),
]))?;
Ok(())
}