feat: 引入异步运行时。

src-tauri/Cargo.lock

@@ -1439,6 +1439,18 @@ dependencies = [
  "adler",
 ]
 
+[[package]]
+name = "mio"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5d732bc30207a6423068df043e3d02e0735b155ad7ce1a6f76fe2baa5b158de"
+dependencies = [
+ "libc",
+ "log",
+ "wasi 0.11.0+wasi-snapshot-preview1",
+ "windows-sys 0.42.0",
+]
+
 [[package]]
 name = "native-tls"
 version = "0.2.11"
@@ -2178,16 +2190,6 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
-[[package]]
-name = "repng"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0dd57cd2cb5cc699b3eb4824d654e5a32f3bc013766da4966f71fe94805abbda"
-dependencies = [
- "byteorder",
- "flate2",
-]
-
 [[package]]
 name = "rfd"
 version = "0.10.0"
@@ -2300,12 +2302,14 @@ dependencies = [
  "bmp",
  "once_cell",
  "paris",
- "repng",
  "scrap",
  "serde",
  "serde_json",
  "tauri",
  "tauri-build",
+ "tokio",
+ "tracing",
+ "tracing-subscriber",
  "webp",
 ]
 
@@ -2517,6 +2521,15 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "signal-hook-registry"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e51e73328dc4ac0c7ccbda3a494dfa03df1de2f46018127f60c693f2648455b0"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "siphasher"
 version = "0.3.10"
@@ -2538,6 +2551,16 @@ version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
 
+[[package]]
+name = "socket2"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02e2d2db9033d13a1567121ddd7a095ee144db4e1ca1b1bda3419bc0da294ebd"
+dependencies = [
+ "libc",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "soup2"
 version = "0.2.1"
@@ -3020,15 +3043,33 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.21.2"
+version = "1.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9e03c497dc955702ba729190dc4aac6f2a0ce97f913e5b1b5912fc5039d9099"
+checksum = "d76ce4a75fb488c605c54bf610f221cea8b0dafb53333c1a67e8ee199dcd2ae3"
 dependencies = [
  "autocfg",
  "bytes",
+ "libc",
  "memchr",
+ "mio",
  "num_cpus",
+ "parking_lot",
  "pin-project-lite",
+ "signal-hook-registry",
+ "socket2",
+ "tokio-macros",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "tokio-macros"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9724f9a975fb987ef7a3cd9be0350edcbe130698af5b8f7a631e23d42d052484"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]

src-tauri/Cargo.toml

@@ -15,16 +15,18 @@ tauri-build = { version = "1.1", features = [] }
 
 [dependencies]
 serde_json = "1.0"
-serde = { version = "1.0", features = ["derive"] }
+serde = { version = "1.0", features = ["derive", "rc"] }
 tauri = { version = "1.1", features = ["api-all"] }
 scrap = "0.5"
-repng = "0.2.2"
 bmp = "0.5.0"
 webp = "0.2.2"
 base64 = "0.13.1"
 anyhow = "1.0.66"
 once_cell = "1.16.0"
 paris = { version = "1.5", features = ["timestamps", "macros"] }
+tokio = { version = "1.22.0", features = ["full"] }
+tracing = "0.1.37"
+tracing-subscriber = "0.3.16"
 
 [features]
 # by default Tauri runs in production mode

src-tauri/src/main.rs

@@ -6,14 +6,11 @@
 mod screen_color_picker;
 
 use paris::*;
-use screen_color_picker::{Screen, ScreenColorPicker};
-use std::time::Instant;
-
-// Learn more about Tauri commands at https://tauri.app/v1/guides/features/command
-#[tauri::command]
-fn greet(name: &str) -> String {
-    format!("Hello, {}! You've been greeted from Rust!", name)
-}
+use screen_color_picker::ScreenColorPicker;
+use std::{
+    sync::{Arc, Mutex},
+    time::Instant,
+};
 
 #[tauri::command]
 fn refresh_displays() {
@@ -26,41 +23,55 @@ fn refresh_displays() {
 }
 
 #[tauri::command]
-fn take_snapshot() -> Vec<String> {
+async fn take_snapshot() -> Arc<Mutex<Vec<String>>> {
     let start = Instant::now();
 
-    let screenshots = match ScreenColorPicker::global().take_screenshots_for_all() {
+    let screenshot_futures = match ScreenColorPicker::global().take_screenshots_for_all() {
         Ok(bitmaps) => {
             info!("bitmaps len: {}", bitmaps.len());
             match ScreenColorPicker::global().screens.lock() {
-                Ok(screens) => Vec::from_iter(
-                    screens
-                        .iter()
-                        .enumerate()
-                        .map(|(index, screen)| bitmap_to_webp_base64(screen, &bitmaps[index])),
-                ),
+                Ok(screens) => {
+                    Some(Vec::from_iter(screens.iter().enumerate().map(
+                        |(index, screen)| bitmap_to_webp_base64(screen.width, screen.height, bitmaps[index].to_vec()),
+                    )))
+                }
                 Err(error) => {
                     error!("can not lock screens. {}", error);
-                    Vec::<String>::new()
+                    None
                 }
             }
         }
         Err(error) => {
             error!("can not take screenshots for all. {}", error);
-            Vec::<String>::new()
+            None
         }
     };
-    println!("运行耗时: {:?}", start.elapsed());
-    screenshots
+    match screenshot_futures {
+        Some(futures) => {
+            let mut handles = Vec::with_capacity(futures.len());
+
+            for fut in futures {
+                handles.push(tokio::spawn(fut));
             }
 
-fn bitmap_to_webp_base64(screen: &Screen, bitmap: &Vec<u8>) -> String {
-    let mut bitflipped = Vec::with_capacity(screen.width * screen.height * 3);
-    let stride = bitmap.len() / screen.height;
+            let mut results = Vec::with_capacity(handles.len());
+            for handle in handles {
+                results.push(handle.await.unwrap());
+            }
+            println!("运行耗时: {:?}", start.elapsed());
+            Arc::new(Mutex::new(results))
+        }
+        None => Arc::new(Mutex::new(Vec::new())),
+    }
+}
+
+async fn bitmap_to_webp_base64(width: usize, height: usize, bitmap: Vec<u8>) -> String {
+    let mut bitflipped = Vec::with_capacity(width * height * 3);
+    let stride = bitmap.len() / height;
 
     // let mut img = Image::new(w as u32, h as u32);
-    for y in 0..screen.height {
-        for x in 0..screen.width {
+    for y in 0..height {
+        for x in 0..width {
             let i = stride * y + 4 * x;
             bitflipped.extend_from_slice(&[bitmap[i + 2], bitmap[i + 1], bitmap[i]]);
             // img.set_pixel(
@@ -71,22 +82,14 @@ fn bitmap_to_webp_base64(screen: &Screen, bitmap: &Vec<u8>) -> String {
         }
     }
 
-    let webp_memory = webp::Encoder::from_rgb(
-        bitflipped.as_slice(),
-        screen.width as u32,
-        screen.height as u32,
-    )
-    .encode(100.0);
+    let webp_memory =
+        webp::Encoder::from_rgb(bitflipped.as_slice(), width as u32, height as u32).encode(100.0);
     return base64::encode(&*webp_memory);
 }
 
 fn main() {
     tauri::Builder::default()
-        .invoke_handler(tauri::generate_handler![
-            greet,
-            take_snapshot,
-            refresh_displays
-        ])
+        .invoke_handler(tauri::generate_handler![take_snapshot, refresh_displays])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
 }