feat: 支持调整程序内存中暂存的显示器配置。

src-tauri/src/display/manager.rs

@@ -5,14 +5,16 @@ use std::{
 
 use ddc_hi::Display;
 use paris::{error, info, warn};
-use tokio::sync::{OnceCell, RwLock};
-
-use super::{display_state::DisplayState, display_handler::DisplayHandler};
+use tokio::{sync::{watch, OnceCell, RwLock}, task::yield_now};
 
+use crate::rpc::{BoardMessageChannels, DisplaySetting};
 
+use super::{display_handler::DisplayHandler, display_state::DisplayState};
 
 pub struct DisplayManager {
     displays: Arc<RwLock<Vec<Arc<RwLock<DisplayHandler>>>>>,
+    setting_request_handler: Option<tokio::task::JoinHandle<()>>,
+    displays_changed_sender: Arc<watch::Sender<Vec<DisplayState>>>,
 }
 
 impl DisplayManager {
@@ -23,10 +25,16 @@ impl DisplayManager {
     }
 
     pub async fn create() -> Self {
-        let instance = Self {
+        let (displays_changed_sender, _) = watch::channel(Vec::new());
+        let displays_changed_sender = Arc::new(displays_changed_sender);
+
+        let mut instance = Self {
             displays: Arc::new(RwLock::new(Vec::new())),
+            setting_request_handler: None,
+            displays_changed_sender,
         };
         instance.fetch_displays().await;
+        instance.subscribe_setting_request();
         instance
     }
 
@@ -60,19 +68,57 @@ impl DisplayManager {
         states
     }
 
-    // pub async fn subscribe_display_brightness(&self) {
-    //     let rpc = rpc::Manager::global().await;
+    fn subscribe_setting_request(&mut self) {
+        let displays = self.displays.clone();
+        let displays_changed_sender = self.displays_changed_sender.clone();
+        log::info!("start display setting request handler");
+        let handler = tokio::spawn(async move {
+            let channels = BoardMessageChannels::global().await;
 
-    //     let mut rx = rpc.client().subscribe_change_display_brightness_rx();
+            let mut request_rx = channels.display_setting_request_sender.subscribe();
 
-    //     loop {
-    //         if let Ok(display_brightness) = rx.recv().await {
-    //             if let Err(err) = self.set_display_brightness(display_brightness).await {
-    //                 error!("set_display_brightness failed. {:?}", err);
-    //             }
-    //         }
-    //     }
-    // }
+            log::info!("display setting request handler started");
+
+            while let Ok(message) = request_rx.recv().await {
+                let displays = displays.write().await;
+
+                let display = displays.get(message.display_index);
+                if display.is_none() {
+                    warn!("display#{} not found", message.display_index);
+                    continue;
+                }
+
+                log::info!("display setting request received. {:?}", message);
+
+                let display = display.unwrap().write().await;
+                match message.setting {
+                    DisplaySetting::Brightness(value) => display.set_brightness(value as u16).await,
+                    DisplaySetting::Contrast(value) => display.set_contrast(value as u16).await,
+                    DisplaySetting::Mode(value) => display.set_mode(value as u16).await,
+                }
+                drop(display);
+
+                log::info!("display setting request handled. {:?}", message);
+
+                let mut states = Vec::new();
+                for display in displays.iter() {
+                    let state = display.read().await.state.read().await.clone();
+                    states.push(state);
+                }
+
+                if let Err(err) = displays_changed_sender.send(states) {
+                    error!("failed to send displays changed event: {}", err);
+                }
+                yield_now().await;
+            }
+        });
+
+        self.setting_request_handler = Some(handler);
+    }
+
+    pub fn subscribe_displays_changed(&self) -> watch::Receiver<Vec<DisplayState>> {
+        self.displays_changed_sender.subscribe()
+    }
 
     // fn read_display_config_by_ddc(index: usize) -> anyhow::Result<DisplayState> {
     //     let mut displays = Display::enumerate();
@@ -208,3 +254,11 @@ impl DisplayManager {
     //     Ok(())
     // }
 }
+
+impl Drop for DisplayManager {
+    fn drop(&mut self) {
+        if let Some(handler) = self.setting_request_handler.take() {
+            handler.abort();
+        }
+    }
+}

src-tauri/src/main.rs

@@ -450,6 +450,20 @@ async fn main() {
                 }
             });
 
+            let app_handle = app.handle().clone();
+            tokio::spawn(async move {
+                let display_manager = DisplayManager::global().await;
+                let mut rx =display_manager.subscribe_displays_changed();
+
+                while rx.changed().await.is_ok() {
+                    let displays = rx.borrow().clone();
+
+                    log::info!("displays changed. emit displays_changed event.");
+
+                    app_handle.emit_all("displays_changed", displays).unwrap();
+                }
+            });
+
             Ok(())
         })
         .run(tauri::generate_context!())

src-tauri/src/rpc/board.rs

@@ -1,9 +1,11 @@
 use std::{sync::Arc, time::Duration};
 
-use paris::{info, warn, error};
-use tokio::{net::UdpSocket, sync::RwLock, time::timeout, io};
+use paris::{error, info, warn};
+use tokio::{io, net::UdpSocket, sync::RwLock, time::timeout, task::yield_now};
 
-use super::{BoardConnectStatus, BoardInfo};
+use crate::rpc::DisplaySettingRequest;
+
+use super::{BoardConnectStatus, BoardInfo, UdpRpc};
 
 #[derive(Debug)]
 pub struct Board {
@@ -37,10 +39,28 @@ impl Board {
                 error!("socket read error: {:?}", err);
                 return;
             }
+
+            let board_message_channels = crate::rpc::channels::BoardMessageChannels::global().await;
+
+            let display_setting_request_sender = board_message_channels.display_setting_request_sender.clone();
+
             loop {
                 match socket.try_recv(&mut buf) {
                     Ok(len) => {
                         log::info!("recv: {:?}", &buf[..len]);
+                        if buf[0] == 3 {
+                            let result = display_setting_request_sender.send(DisplaySettingRequest {
+                                display_index: buf[1] as usize,
+                                setting: crate::rpc::DisplaySetting::Brightness(buf[2]),
+                            });
+
+                            if let Err(err) = result {
+                                error!("send display setting request to channel failed: {:?}", err);
+                            } else {
+                                info!("send display setting request to channel success");
+                                yield_now().await;
+                            }
+                        }
                     }
                     Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
                         continue;
@@ -125,7 +145,6 @@ impl Board {
     }
 }
 
-
 impl Drop for Board {
     fn drop(&mut self) {
         if let Some(handler) = self.listen_handler.take() {

src-tauri/src/rpc/channels.rs

@@ -0,0 +1,26 @@
+use std::sync::Arc;
+
+use tokio::sync::{broadcast, OnceCell};
+
+use super::DisplaySettingRequest;
+
+pub struct BoardMessageChannels {
+    pub display_setting_request_sender: Arc<broadcast::Sender<DisplaySettingRequest>>,
+}
+
+impl BoardMessageChannels {
+    pub async fn global() -> &'static Self {
+        static BOARD_MESSAGE_CHANNELS: OnceCell<BoardMessageChannels> = OnceCell::const_new();
+
+        BOARD_MESSAGE_CHANNELS.get_or_init(|| async {Self::new()}).await
+    }
+
+    pub fn new() -> Self {
+        let (display_setting_request_sender, _) = broadcast::channel(16);
+        let display_setting_request_sender = Arc::new(display_setting_request_sender);
+
+        Self {
+            display_setting_request_sender,
+        }
+    }
+}

src-tauri/src/rpc/display_setting_request.rs

@@ -0,0 +1,13 @@
+
+#[derive(Clone, Debug)]
+pub enum DisplaySetting {
+    Brightness(u8),
+    Contrast(u8),
+    Mode(u8),
+}
+
+#[derive(Clone, Debug)]
+pub struct DisplaySettingRequest {
+    pub display_index: usize,
+    pub setting: DisplaySetting,
+}

src-tauri/src/rpc/mod.rs

@@ -2,8 +2,12 @@ mod board_info;
 mod mqtt;
 mod udp;
 mod board;
+mod display_setting_request;
+mod channels;
 
 pub use board_info::*;
 pub use mqtt::*;
 pub use udp::*;
 pub use board::*;
+pub use display_setting_request::*;
+pub use channels::*;

src-tauri/src/rpc/udp.rs

@@ -1,14 +1,11 @@
-use std::{collections::HashMap, net::Ipv4Addr, sync::Arc, time::Duration};
+use std::{collections::HashMap, sync::Arc, time::Duration};
 
 use futures::future::join_all;
 use mdns_sd::{ServiceDaemon, ServiceEvent};
 use paris::{error, info, warn};
-use tokio::{
-    net::UdpSocket,
-    sync::{watch, OnceCell, RwLock},
-};
+use tokio::sync::{watch, OnceCell, RwLock, broadcast};
 
-use super::{Board, BoardInfo};
+use super::{Board, BoardInfo, DisplaySettingRequest};
 
 #[derive(Debug, Clone)]
 pub struct UdpRpc {