Add: Volume widget

- Use `amixer` command
- Comment out bg color lines to use default vals

Cargo.toml

@@ -12,7 +12,6 @@ dirs = "6.0.0"
 i-slint-backend-winit = { version = "1.14.1", features = ["x11"] }
 serde = { version = "1.0.228", features = ["derive"] }
 slint = { version = "1.14.1", features = ["backend-winit"] }
-tokio = { version = "1.48.0", features = ["macros", "rt-multi-thread", "time"] }
 toml = "0.9.8"
 
 [build-dependencies]

src/widgets/mod.rs

@@ -2,6 +2,7 @@ mod batterywidget;
 mod common;
 mod datewidget;
 mod timewidget;
+mod volumewidget;
 
 use crate::TopBar;
 
@@ -9,6 +10,7 @@ pub fn install_callbacks(ui: &TopBar) {
     timewidget::install(ui);
     datewidget::install(ui);
     batterywidget::install(ui);
+    volumewidget::install(ui);
 
     // In the future:
     // networkwidget::install(ui);

src/widgets/volumewidget.rs

@@ -0,0 +1,97 @@
+use super::common::run_cmd;
+use crate::TopBar;
+use slint::{ComponentHandle, SharedString, Timer, TimerMode};
+use std::process::Command;
+use std::time::Duration;
+
+// Run `amixer get Master` and return stdout as String
+fn read_amixer() -> String {
+    String::from_utf8(
+        Command::new("amixer")
+            .args(["get", "Master"])
+            .output()
+            .unwrap()
+            .stdout,
+    )
+    .unwrap_or_default()
+}
+
+// Parse volume percentage (0–100)
+fn parse_volume(amixer_out: &str) -> u8 {
+    // Looks for "[42%]" pattern
+    for token in amixer_out.split_whitespace() {
+        if let Some(stripped) = token.strip_prefix('[').and_then(|t| t.strip_suffix("%]"))
+            && let Ok(val) = stripped.parse::<u8>()
+        {
+            return val;
+        }
+    }
+    0
+}
+
+// Detect mute: `[off]` means muted
+fn is_muted(amixer_out: &str) -> bool {
+    amixer_out.contains("[off]")
+}
+
+// Select simple volume icon from level
+fn select_icon(vol: u8, muted: bool) -> SharedString {
+    let icon = if muted {
+        "" // mute
+    } else if vol == 0 {
+        "" // empty
+    } else if vol <= 30 {
+        "" // low
+    } else if vol <= 70 {
+        "" // medium
+    } else {
+        "" // high
+    };
+
+    SharedString::from(icon)
+}
+
+// Build tooltip text
+fn make_tooltip(vol: u8, muted: bool) -> SharedString {
+    if muted {
+        SharedString::from(format!("Volume: {vol}%"))
+    } else {
+        SharedString::from("Volume: {vol}%")
+    }
+}
+
+// Timer loop: update volume every second
+fn start_volume_updater(ui: &TopBar) {
+    let weak = ui.as_weak();
+
+    let timer = Box::leak(Box::new(Timer::default()));
+    timer.start(TimerMode::Repeated, Duration::from_secs(1), move || {
+        if let Some(ui) = weak.upgrade() {
+            let out = read_amixer();
+            //println!("{out}");
+            let vol = parse_volume(&out);
+            let muted = is_muted(&out);
+
+            // Compute values
+            let icon = select_icon(vol, muted);
+            let tooltip = make_tooltip(vol, muted);
+
+            // Push to UI
+            ui.set_volume_icon(icon);
+            ui.set_volume_tooltip(tooltip);
+        }
+    });
+}
+
+// Public entry: connect callback + start updater
+pub fn install(ui: &TopBar) {
+    let weak = ui.as_weak();
+
+    ui.on_show_volume(move || {
+        if weak.upgrade().is_some() {
+            run_cmd("xclock"); // placeholder
+        }
+    });
+
+    start_volume_updater(ui);
+}

ui/topbar.slint

@@ -21,13 +21,22 @@ export component TopBar inherits Window {
     // Battery widget
     in property <string> battery_tooltip;      
     in property <string> battery_icon;  
-    in property <color> battery_icon_color: #ffffff;
-    in property <color> battery_bg_normal: #8e9162;
-    in property <color> battery_bg_hover: #6d8a4d;
-    in property <color> battery_bg_clicked: #4a5f70;
+    in property <color> battery_icon_color;
+    /*in property <color> battery_bg_normal;    // Enable later. Use defaults now.
+    in property <color> battery_bg_hover;
+    in property <color> battery_bg_clicked;*/
     callback show_battery();
 
 
+    // Volume widget
+    in property <string> volume_tooltip;      
+    in property <string> volume_icon;  
+    /*in property <color> volume_icon_color;
+    in property <color> volume_bg_normal;
+    in property <color> volume_bg_hover;
+    in property <color> volume_bg_clicked;*/
+    callback show_volume();
+
     title: "chocobar";
     width: bar_width *1px;
     height: bar_height *1px;
@@ -72,15 +81,27 @@ export component TopBar inherits Window {
                 HorizontalLayout {
                     alignment: end; // Right-align
                     
+                    // SquareIconWidget - Volume
+                    SquareIconWidget {
+                        bar_height: root.bar_height;
+                        icon_text: root.volume_icon;
+                        tooltip_text: root.volume_tooltip;
+                        /*icon_color: root.volume_icon_color;
+                        bg_normal: root.volume_bg_normal;
+                        bg_hover: root.volume_bg_hover;
+                        bg_clicked: root.volume_bg_clicked;*/
+                        square_btn_callback => root.show_volume();
+                    }
+
                     // SquareIconWidget - Battery 
                     SquareIconWidget {
                         bar_height: root.bar_height;
                         icon_text: root.battery_icon;
                         tooltip_text: root.battery_tooltip;
                         icon_color: root.battery_icon_color;
-                        bg_normal: root.battery_bg_normal;
+                        /*bg_normal: root.battery_bg_normal;
                         bg_hover: root.battery_bg_hover;
-                        bg_clicked: root.battery_bg_clicked;
+                        bg_clicked: root.battery_bg_clicked;*/
                         square_btn_callback => root.show_battery();
                     }