refactor: reduce CPU usage with Event Loop Proxy events
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@ -43,7 +43,7 @@ To build, you must have [Rust](https://www.rust-lang.org/) and
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- [ ] Force update devices button in tray menu
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- [ ] Colored tray icons for different battery levels
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- [x] Show log window button in tray menu
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- [ ] Further reduce CPU usage by using Event Loop Proxy events (more info [here](https://github.com/tauri-apps/tray-icon/issues/83#issuecomment-1697773065))
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- [x] Further reduce CPU usage by using Event Loop Proxy events (more info [here](https://github.com/tauri-apps/tray-icon/issues/83#issuecomment-1697773065))
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- [ ] Prebuilt Binary
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- [ ] Command Line Arguments for update frequency
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- [ ] Support for other Razer Devices (I only have DeathAdder V3 Pro, so I won't be able to test it with other devices)
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109
src/tray.rs
109
src/tray.rs
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@ -1,21 +1,20 @@
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use std::{
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collections::HashMap,
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rc::Rc,
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sync::{mpsc, Arc},
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collections::{HashMap, HashSet},
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sync::Arc,
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thread,
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time::{Duration, Instant},
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time::Duration,
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};
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use crate::{console::DebugConsole, manager::DeviceManager};
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use log::{error, info, trace};
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use parking_lot::Mutex;
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use tao::event_loop::EventLoopBuilder;
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use tao::event_loop::{EventLoopBuilder, EventLoopProxy};
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use tray_icon::{
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menu::{Menu, MenuEvent, MenuItem},
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menu::{IsMenuItem, Menu, MenuEvent, MenuItem},
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TrayIcon, TrayIconBuilder,
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};
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const BATTERY_UPDATE_INTERVAL: Duration = Duration::from_secs(60);
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const BATTERY_UPDATE_INTERVAL: Duration = Duration::from_secs(300); // 5 min
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const DEVICE_FETCH_INTERVAL: Duration = Duration::from_secs(5);
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#[derive(Debug)]
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@ -41,7 +40,7 @@ impl MemoryDevice {
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}
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pub struct TrayInner {
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tray_icon: Rc<Mutex<Option<TrayIcon>>>,
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tray_icon: Arc<Mutex<Option<TrayIcon>>>,
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menu_items: Arc<Mutex<Vec<MenuItem>>>,
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debug_console: Arc<DebugConsole>,
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}
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@ -49,7 +48,7 @@ pub struct TrayInner {
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impl TrayInner {
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fn new(debug_console: Arc<DebugConsole>) -> Self {
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Self {
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tray_icon: Rc::new(Mutex::new(None)),
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tray_icon: Arc::new(Mutex::new(None)),
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menu_items: Arc::new(Mutex::new(Vec::new())),
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debug_console,
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}
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@ -65,14 +64,19 @@ impl TrayInner {
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menu_items.push(show_console_item);
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menu_items.push(quit_item);
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let item_refs: Vec<&dyn IsMenuItem> = menu_items
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.iter()
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.map(|item| item as &dyn IsMenuItem)
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.collect();
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tray_menu
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.append_items(&[&menu_items[0], &menu_items[1]])
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.unwrap();
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.append_items(&item_refs)
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.expect("Failed to append menu items");
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tray_menu
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}
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fn build_tray(
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tray_icon: &Rc<Mutex<Option<TrayIcon>>>,
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tray_icon: &Arc<Mutex<Option<TrayIcon>>>,
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tray_menu: &Menu,
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icon: tray_icon::Icon,
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) {
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@ -95,6 +99,12 @@ pub struct TrayApp {
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tray_inner: TrayInner,
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}
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#[derive(Debug)]
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enum TrayEvent {
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DeviceUpdate(Vec<u32>),
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MenuEvent(MenuEvent),
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}
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impl TrayApp {
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pub fn new(debug_console: DebugConsole) -> Self {
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Self {
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@ -106,15 +116,15 @@ impl TrayApp {
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pub fn run(&self) {
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let icon = Self::create_icon();
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let event_loop = EventLoopBuilder::new().build();
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let event_loop = EventLoopBuilder::with_user_event().build();
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let tray_menu = self.tray_inner.create_menu();
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let (sender, receiver) = mpsc::channel();
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let proxy = event_loop.create_proxy();
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self.spawn_device_fetch_thread(sender.clone());
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self.spawn_battery_check_thread(sender);
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self.spawn_device_fetch_thread(proxy.clone());
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self.spawn_battery_check_thread(proxy.clone());
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self.run_event_loop(event_loop, icon, tray_menu, receiver);
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self.run_event_loop(event_loop, icon, tray_menu, proxy);
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}
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fn create_icon() -> tray_icon::Icon {
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@ -128,17 +138,18 @@ impl TrayApp {
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tray_icon::Icon::from_rgba(rgba, width, height).expect("Failed to create icon")
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}
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fn spawn_device_fetch_thread(&self, tx: mpsc::Sender<Vec<u32>>) {
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fn spawn_device_fetch_thread(&self, proxy: EventLoopProxy<TrayEvent>) {
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let devices = Arc::clone(&self.devices);
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let device_manager = Arc::clone(&self.device_manager);
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thread::spawn(move || loop {
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thread::spawn(move || {
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let mut last_devices = HashSet::new();
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loop {
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let (removed_devices, connected_devices) = {
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let mut manager = device_manager.lock();
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manager.fetch_devices()
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};
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{
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let mut devices = devices.lock();
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for id in removed_devices {
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if let Some(device) = devices.remove(&id) {
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@ -147,75 +158,69 @@ impl TrayApp {
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}
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for &id in &connected_devices {
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if let std::collections::hash_map::Entry::Vacant(e) = devices.entry(id) {
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if !devices.contains_key(&id) {
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if let Some(name) = device_manager.lock().get_device_name(id) {
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e.insert(MemoryDevice::new(name.clone(), id));
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devices.insert(id, MemoryDevice::new(name.clone(), id));
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info!("New device: {}", name);
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} else {
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error!("Failed to get device name for id: {}", id);
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}
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}
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}
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}
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if !connected_devices.is_empty() {
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tx.send(connected_devices).unwrap();
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let current_devices: HashSet<_> = connected_devices.iter().cloned().collect();
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if current_devices != last_devices {
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let _ = proxy.send_event(TrayEvent::DeviceUpdate(connected_devices));
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last_devices = current_devices;
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}
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thread::sleep(DEVICE_FETCH_INTERVAL);
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}
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});
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}
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fn spawn_battery_check_thread(&self, tx: mpsc::Sender<Vec<u32>>) {
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fn spawn_battery_check_thread(&self, proxy: EventLoopProxy<TrayEvent>) {
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let devices = Arc::clone(&self.devices);
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thread::spawn(move || loop {
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let device_ids: Vec<u32> = devices.lock().keys().cloned().collect();
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tx.send(device_ids).unwrap();
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let _ = proxy.send_event(TrayEvent::DeviceUpdate(device_ids));
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thread::sleep(BATTERY_UPDATE_INTERVAL);
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});
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}
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fn run_event_loop(
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&self,
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event_loop: tao::event_loop::EventLoop<()>,
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event_loop: tao::event_loop::EventLoop<TrayEvent>,
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icon: tray_icon::Icon,
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tray_menu: Menu,
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rx: mpsc::Receiver<Vec<u32>>,
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proxy: EventLoopProxy<TrayEvent>,
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) {
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let devices = Arc::clone(&self.devices);
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let device_manager = Arc::clone(&self.device_manager);
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let tray_icon = Rc::clone(&self.tray_inner.tray_icon);
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let tray_icon = Arc::clone(&self.tray_inner.tray_icon);
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let debug_console = Arc::clone(&self.tray_inner.debug_console);
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let menu_items = Arc::clone(&self.tray_inner.menu_items);
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let menu_channel = MenuEvent::receiver();
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event_loop.run(move |event, _, control_flow| {
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*control_flow = tao::event_loop::ControlFlow::WaitUntil(
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Instant::now() + Duration::from_millis(100),
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);
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*control_flow = tao::event_loop::ControlFlow::Wait;
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if let Ok(device_ids) = rx.try_recv() {
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Self::update(&devices, &device_manager, &device_ids, &tray_icon);
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}
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if let tao::event::Event::NewEvents(tao::event::StartCause::Init) = event {
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// We create the icon once the event loop is actually running
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// to prevent issues like https://github.com/tauri-apps/tray-icon/issues/90
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match event {
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tao::event::Event::NewEvents(tao::event::StartCause::Init) => {
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TrayInner::build_tray(&tray_icon, &tray_menu, icon.clone());
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}
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if let Ok(event) = menu_channel.try_recv() {
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tao::event::Event::UserEvent(TrayEvent::DeviceUpdate(device_ids)) => {
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Self::update(&devices, &device_manager, &device_ids, &tray_icon);
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}
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tao::event::Event::UserEvent(TrayEvent::MenuEvent(event)) => {
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let menu_items = menu_items.lock();
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let show_console_item = &menu_items[0];
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let quit_item = &menu_items[1];
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if event.id == show_console_item.id() {
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if event.id == menu_items[0].id() {
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debug_console.toggle_visibility();
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let visible = debug_console.is_visible();
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show_console_item.set_text(if visible {
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menu_items[0].set_text(if visible {
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"Hide Log Window"
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} else {
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"Show Log Window"
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@ -223,10 +228,16 @@ impl TrayApp {
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trace!("{} log window", if visible { "showing" } else { "hiding" });
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}
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if event.id == quit_item.id() {
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if event.id == menu_items[1].id() {
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*control_flow = tao::event_loop::ControlFlow::Exit;
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}
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}
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_ => (),
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}
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if let Ok(event) = menu_channel.try_recv() {
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let _ = proxy.send_event(TrayEvent::MenuEvent(event));
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}
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});
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}
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@ -234,7 +245,7 @@ impl TrayApp {
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devices: &Arc<Mutex<HashMap<u32, MemoryDevice>>>,
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manager: &Arc<Mutex<DeviceManager>>,
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device_ids: &[u32],
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tray_icon: &Rc<Mutex<Option<TrayIcon>>>,
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tray_icon: &Arc<Mutex<Option<TrayIcon>>>,
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) {
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let mut devices = devices.lock();
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let manager = manager.lock();
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