feat: 屏幕跟随改为多线程执行。

性能没有提升。

src-tauri/src/picker/manager.rs

@@ -6,10 +6,7 @@ use tokio::sync::Mutex;
 
 use crate::picker::screen::Screen;
 
-use super::{
-    led_color::LedColor,
-    screenshot::{Screenshot},
-};
+use super::{led_color::LedColor, screenshot::Screenshot};
 
 pub struct Picker {
     pub screens: Arc<Mutex<Vec<Screen>>>,

src-tauri/src/picker/screenshot.rs

@@ -53,11 +53,11 @@ impl Screenshot {
         match bitmap.as_ref() {
             Some(bitmap) => {
                 let cell_size_x = self.width / self.led_number_of_x;
-                let cell_size_y = self.height / 5;
+                let cell_size_y = self.height / 8;
                 let cell_size = cell_size_x * cell_size_y;
                 let y_range = match position {
-                    XPosition::Top => 0..cell_size_y,
-                    XPosition::Bottom => self.height - cell_size_y..self.height,
+                    XPosition::Top => 20..cell_size_y + 20,
+                    XPosition::Bottom => self.height - 20 - cell_size_y..self.height - 20,
                 };
 
                 let mut colors = Vec::new();