libcosmic/src/theme/portal.rs

97 lines
3.7 KiB
Rust

use ashpd::desktop::settings::{ColorScheme, Contrast};
use ashpd::desktop::Color;
use iced::futures::{self, select, FutureExt, SinkExt, StreamExt};
use iced_futures::subscription;
use tracing::error;
#[derive(Debug, Clone)]
pub enum Desktop {
Accent(Color),
ColorScheme(ColorScheme),
Contrast(Contrast),
}
pub fn desktop_settings() -> iced_futures::Subscription<Desktop> {
subscription::channel(std::any::TypeId::of::<Desktop>(), 10, |mut tx| {
async move {
let mut attempts = 0;
loop {
let Ok(settings) = ashpd::desktop::settings::Settings::new().await else {
error!("Failed to create the settings proxy");
#[cfg(feature = "tokio")]
::tokio::time::sleep(::tokio::time::Duration::from_secs(2_u64.pow(attempts)))
.await;
#[cfg(not(feature = "tokio"))]
{
pending::<()>().await;
unreachable!();
}
attempts += 1;
continue;
};
match settings.color_scheme().await {
Ok(color_scheme) => {
let _ = tx.send(Desktop::ColorScheme(color_scheme)).await;
}
Err(err) => error!("Failed to get the color scheme {err:?}"),
};
match settings.contrast().await {
Ok(contrast) => {
let _ = tx.send(Desktop::Contrast(contrast)).await;
}
Err(err) => error!("Failed to get the contrast {err:?}"),
};
let mut color_scheme_stream = settings.receive_color_scheme_changed().await.ok();
if color_scheme_stream.is_none() {
error!("Failed to receive color scheme changes");
}
let mut contrast_stream = settings.receive_contrast_changed().await.ok();
if contrast_stream.is_none() {
error!("Failed to receive contrast changes");
}
loop {
if color_scheme_stream.is_none() && contrast_stream.is_none() {
break;
}
let next_color_scheme = async {
if let Some(s) = color_scheme_stream.as_mut() {
return s.next().await;
}
futures::future::pending().await
};
let next_contrast = async {
if let Some(s) = contrast_stream.as_mut() {
return s.next().await;
}
futures::future::pending().await
};
select! {
s = next_color_scheme.fuse() => {
if let Some(s) = s {
_ = tx.send(Desktop::ColorScheme(s)).await;
} else {
color_scheme_stream = None;
}
},
c = next_contrast.fuse() => {
if let Some(c) = c {
_ = tx.send(Desktop::Contrast(c)).await;
} else {
contrast_stream = None;
}
}
};
// Reset the attempts counter if we successfully received a change
attempts = 0;
}
}
}
})
}