feat: GUI 控制的，LED 灯条颜色预览。

src-tauri/src/ambient_light/config.rs

@@ -0,0 +1,139 @@
+use std::env::current_dir;
+
+use paris::{error, info};
+use serde::{Deserialize, Serialize};
+use tauri::api::path::config_dir;
+
+#[derive(Clone, Copy, Serialize, Deserialize, Debug)]
+pub enum Border {
+    Top,
+    Bottom,
+    Left,
+    Right,
+}
+
+#[derive(Clone, Copy, Serialize, Deserialize, Debug)]
+pub struct LedStripConfigOfBorders {
+    pub top: Option<LedStripConfig>,
+    pub bottom: Option<LedStripConfig>,
+    pub left: Option<LedStripConfig>,
+    pub right: Option<LedStripConfig>,
+}
+
+#[derive(Clone, Copy, Serialize, Deserialize, Debug)]
+pub struct LedStripConfig {
+    pub index: usize,
+    pub border: Border,
+    pub display_id: u32,
+    pub start_pos: usize,
+    pub len: usize,
+}
+
+impl LedStripConfig {
+    pub async fn read_config() -> anyhow::Result<Vec<Self>> {
+        // config path
+        let path = config_dir()
+            .unwrap_or(current_dir().unwrap())
+            .join("led_strip_config.toml");
+
+        let exists = tokio::fs::try_exists(path.clone())
+            .await
+            .map_err(|e| anyhow::anyhow!("Failed to check config file exists: {}", e))?;
+
+        if exists {
+            let config = tokio::fs::read_to_string(path).await?;
+
+            let config: Vec<Self> = toml::from_str(&config)
+                .map_err(|e| anyhow::anyhow!("Failed to parse config file: {}", e))?;
+
+            Ok(config)
+        } else {
+            info!("config file not exist, fallback to default config");
+            Ok(Self::get_default_config().await?)
+        }
+    }
+
+    pub async fn write_config(configs: &Vec<Self>) -> anyhow::Result<()> {
+        let path = config_dir()
+            .unwrap_or(current_dir().unwrap())
+            .join("led_strip_config.toml");
+
+        let config = toml::to_string(configs)
+            .map_err(|e| anyhow::anyhow!("Failed to parse config file: {}", e))?;
+
+        tokio::fs::write(path, config)
+            .await
+            .map_err(|e| anyhow::anyhow!("Failed to write config file: {}", e))?;
+
+        Ok(())
+    }
+
+    pub async fn get_default_config() -> anyhow::Result<Vec<Self>> {
+        let displays = display_info::DisplayInfo::all().map_err(|e| {
+            error!("can not list display info: {}", e);
+            anyhow::anyhow!("can not list display info: {}", e)
+        })?;
+
+        let mut configs = Vec::new();
+        for (i, display) in displays.iter().enumerate() {
+            for j in 0..4 {
+                let config = Self {
+                    index: j + i * 4 * 30,
+                    display_id: display.id,
+                    border: match j {
+                        0 => Border::Top,
+                        1 => Border::Bottom,
+                        2 => Border::Left,
+                        3 => Border::Right,
+                        _ => unreachable!(),
+                    },
+                    start_pos: 0,
+                    len: 30,
+                };
+                configs.push(config);
+            }
+        }
+
+        Ok(configs)
+    }
+}
+
+#[derive(Clone, Copy, Serialize, Deserialize, Debug)]
+pub struct DisplayConfig {
+    pub id: u32,
+    pub index_of_display: usize,
+    pub display_width: usize,
+    pub display_height: usize,
+    pub led_strip_of_borders: LedStripConfigOfBorders,
+    pub scale_factor: f32,
+}
+
+impl LedStripConfigOfBorders {
+    pub fn default() -> Self {
+        Self {
+            top: None,
+            bottom: None,
+            left: None,
+            right: None,
+        }
+    }
+}
+
+impl DisplayConfig {
+    pub fn default(
+        id: u32,
+        index_of_display: usize,
+        display_width: usize,
+        display_height: usize,
+        scale_factor: f32,
+    ) -> Self {
+        Self {
+            id,
+            index_of_display,
+            display_width,
+            display_height,
+            led_strip_of_borders: LedStripConfigOfBorders::default(),
+            scale_factor,
+        }
+    }
+}

src-tauri/src/ambient_light/mod.rs

@@ -0,0 +1,3 @@
+mod config;
+
+pub use config::*;