StratoSDK is a framework with a declarative approach similar to Flutter/React, written and designed entirely for Rust.
| 1 | use futures_lite::StreamExt; |
| 2 | use winit::event_loop::EventLoopProxy; |
| 3 | use zbus::proxy; |
| 4 | |
| 5 | use crate::{r#async::executor::Background, windowing::winit::app::CustomEvent}; |
| 6 | |
| 7 | /// A zbus proxy for receiving PrepareForSleep signals from systemd-logind. |
| 8 | #[proxy( |
| 9 | interface = "org.freedesktop.login1.Manager", |
| 10 | default_service = "org.freedesktop.login1", |
| 11 | default_path = "/org/freedesktop/login1", |
| 12 | gen_blocking = false |
| 13 | )] |
| 14 | trait LoginManager { |
| 15 | #[zbus(signal)] |
| 16 | fn prepare_for_sleep(&self, start: bool) -> zbus::Result<()>; |
| 17 | } |
| 18 | |
| 19 | /// Sets up a background task to listen to suspend/resume events sent over dbus |
| 20 | /// and inject events into the winit EventLoop accordingly. |
| 21 | pub fn watch_suspend_resume_changes( |
| 22 | event_proxy: EventLoopProxy<CustomEvent>, |
| 23 | background: &Background, |
| 24 | ) { |
| 25 | background |
| 26 | .spawn(async move { |
| 27 | if let Err(err) = watch_suspend_resume_changes_internal(event_proxy).await { |
| 28 | log::warn!( |
| 29 | "Encountered error while watching for system suspend/resume events: {err:#}" |
| 30 | ); |
| 31 | } |
| 32 | }) |
| 33 | .detach(); |
| 34 | } |
| 35 | |
| 36 | async fn watch_suspend_resume_changes_internal( |
| 37 | event_proxy: EventLoopProxy<CustomEvent>, |
| 38 | ) -> zbus::Result<()> { |
| 39 | let connection = zbus::Connection::system().await?; |
| 40 | let login_manager_proxy = LoginManagerProxy::new(&connection).await?; |
| 41 | let mut stream = login_manager_proxy.receive_prepare_for_sleep().await?; |
| 42 | while let Some(msg) = stream.next().await { |
| 43 | if let Ok(args) = msg.args() { |
| 44 | if args.start { |
| 45 | let _ = event_proxy.send_event(CustomEvent::AboutToSleep); |
| 46 | } else { |
| 47 | let _ = event_proxy.send_event(CustomEvent::ResumedFromSleep); |
| 48 | } |
| 49 | } |
| 50 | } |
| 51 | Ok(()) |
| 52 | } |
| 53 |