feat: GUI 控制的，LED 灯条颜色预览。

src-tauri/src/led_color.rs

@@ -0,0 +1,54 @@
+use color_space::{Hsv, Rgb};
+use serde::Serialize;
+
+#[derive(Clone, Copy, Debug)]
+pub struct LedColor {
+    bits: [u8; 3],
+}
+
+impl LedColor {
+    pub fn default() -> Self {
+        Self { bits: [0, 0, 0] }
+    }
+
+    pub fn new(r: u8, g: u8, b: u8) -> Self {
+        Self { bits: [r, g, b] }
+    }
+
+    pub fn from_hsv(h: f64, s: f64, v: f64) -> Self {
+        let rgb = Rgb::from(Hsv::new(h, s, v));
+        Self { bits: [rgb.r as u8, rgb.g as u8, rgb.b as u8] }
+    }
+
+    pub fn get_rgb(&self) -> [u8; 3] {
+        self.bits
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.bits.iter().any(|bit| *bit == 0)
+    }
+
+    pub fn set_rgb(&mut self, r: u8, g: u8, b: u8) -> &Self {
+        self.bits = [r, g, b];
+        self
+    }
+
+    pub fn merge(&mut self, r: u8, g: u8, b: u8) -> &Self {
+        self.bits = [
+            (self.bits[0] / 2 + r / 2),
+            (self.bits[1] / 2 + g / 2),
+            (self.bits[2] / 2 + b / 2),
+        ];
+        self
+    }
+}
+
+impl Serialize for LedColor {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        let hex = format!("#{}", hex::encode(self.bits));
+        serializer.serialize_str(hex.as_str())
+    }
+}