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Breadway 2026-05-18 23:01:52 +08:00
parent 255be18ca2
commit e233750b24
5 changed files with 61 additions and 22 deletions
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52
src/bar/stats.rs
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@ -1,11 +1,18 @@
use crate::{App, AppInput};
use relm4::ComponentSender;
use std::{fs, path::PathBuf, sync::Mutex};
use std::{
fs,
path::PathBuf,
sync::{
atomic::{AtomicU8, Ordering},
LazyLock, Mutex, OnceLock,
},
};
const WIFI_STRONG: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/assets/WiFi Strong.svg");
const WIFI_MEDIUM: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/assets/WiFi Medium.svg");
const WIFI_WEAK: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/assets/WiFi Weak.svg");
const WIFI_OFF: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/assets/WiFi Connecting.svg");
pub const WIFI_STRONG: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/assets/WiFi Strong.svg");
pub const WIFI_MEDIUM: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/assets/WiFi Medium.svg");
pub const WIFI_WEAK: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/assets/WiFi Weak.svg");
pub const WIFI_OFF: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/assets/WiFi Connecting.svg");
#[derive(Debug)]
pub struct Stats {
@ -22,7 +29,11 @@ struct CpuSnapshot {
idle: u64,
}
static PREV_CPU: std::sync::OnceLock<Mutex<CpuSnapshot>> = std::sync::OnceLock::new();
static PREV_CPU: OnceLock<Mutex<CpuSnapshot>> = OnceLock::new();
static BAT_PATH: OnceLock<Option<PathBuf>> = OnceLock::new();
static WIFI_CACHE: LazyLock<Mutex<(String, &'static str)>> =
LazyLock::new(|| Mutex::new(("—".to_string(), WIFI_OFF)));
static WIFI_TICK: AtomicU8 = AtomicU8::new(0);
fn read_cpu() -> f32 {
let text = fs::read_to_string("/proc/stat").unwrap_or_default();
@ -65,15 +76,16 @@ fn read_ram() -> u64 {
total.saturating_sub(avail)
}
fn bat_path() -> Option<PathBuf> {
fs::read_dir("/sys/class/power_supply")
.ok()?
.filter_map(|e| e.ok())
.map(|e| e.path())
.find(|p| {
p.file_name()
.map_or(false, |n| n.to_string_lossy().starts_with("BAT"))
fn bat_path() -> Option<&'static PathBuf> {
BAT_PATH
.get_or_init(|| {
fs::read_dir("/sys/class/power_supply")
.ok()?
.filter_map(|e| e.ok())
.map(|e| e.path())
.find(|p| p.file_name().map_or(false, |n| n.to_string_lossy().starts_with("BAT")))
})
.as_ref()
}
fn read_power() -> Option<f32> {
@ -161,7 +173,17 @@ pub async fn poll() -> Stats {
let mem = read_ram();
let power = read_power().map_or_else(|| " —W".into(), |w| format!("{w:4.1}W"));
let bat = read_battery().map_or_else(|| " —".into(), |p| format!("{p:3}%"));
let (wifi_ssid, wifi_icon) = read_wifi().await;
// Refresh WiFi every 8 cycles (~16 s); cache the result in between.
let (wifi_ssid, wifi_icon) = {
let tick = WIFI_TICK.fetch_add(1, Ordering::Relaxed);
if tick % 8 == 0 {
let fresh = read_wifi().await;
*WIFI_CACHE.lock().unwrap() = fresh.clone();
fresh
} else {
WIFI_CACHE.lock().unwrap().clone()
}
};
Stats {
cpu: format!("{cpu:3.0}%"),
mem: if mem >= 1024 * 1024 {