feat(bar): add label prefix config opt

This commit makes the label prefix configurable. Users can select if
they want to show an icon, only text, or both text and an icon.

komorebi-bar/src/battery.rs

@@ -1,3 +1,4 @@
+use crate::config::LabelPrefix;
 use crate::widget::BarWidget;
 use crate::WIDGET_SPACING;
 use eframe::egui::text::LayoutJob;
@@ -23,6 +24,8 @@ pub struct BatteryConfig {
     pub enable: bool,
     /// Data refresh interval (default: 10 seconds)
     pub data_refresh_interval: Option<u64>,
+    /// Display label prefix
+    pub label_prefix: Option<LabelPrefix>,
 }
 
 impl From<BatteryConfig> for Battery {
@@ -30,6 +33,7 @@ impl From<BatteryConfig> for Battery {
         let manager = Manager::new().unwrap();
         let mut last_state = String::new();
         let mut state = None;
+        let prefix = value.label_prefix.unwrap_or(LabelPrefix::Icon);
 
         if let Ok(mut batteries) = manager.batteries() {
             if let Some(Ok(first)) = batteries.nth(0) {
@@ -39,8 +43,13 @@ impl From<BatteryConfig> for Battery {
                     State::Discharging => state = Some(BatteryState::Discharging),
                     _ => {}
                 }
-
-                last_state = format!("{percentage}%");
+                
+                last_state = match prefix {
+                    LabelPrefix::Text | LabelPrefix::IconAndText => {
+                        format!("BAT: {percentage:.0}%")
+                    }
+                    LabelPrefix::None | LabelPrefix::Icon => format!("{percentage:.0}%"),
+                }
             }
         }
 
@@ -49,6 +58,7 @@ impl From<BatteryConfig> for Battery {
             manager,
             last_state,
             data_refresh_interval: value.data_refresh_interval.unwrap_or(10),
+            label_prefix: prefix,
             state: state.unwrap_or(BatteryState::Discharging),
             last_updated: Instant::now(),
         }
@@ -65,6 +75,7 @@ pub struct Battery {
     manager: Manager,
     pub state: BatteryState,
     data_refresh_interval: u64,
+    label_prefix: LabelPrefix,
     last_state: String,
     last_updated: Instant,
 }
@@ -86,7 +97,12 @@ impl Battery {
                         _ => {}
                     }
 
-                    output = format!("{percentage:.0}%");
+                    output = match self.label_prefix {
+                        LabelPrefix::Text | LabelPrefix::IconAndText => {
+                            format!("BAT: {percentage:.0}%")
+                        }
+                        LabelPrefix::None | LabelPrefix::Icon => format!("{percentage:.0}%"),
+                    }
                 }
             }
 
@@ -116,7 +132,10 @@ impl BarWidget for Battery {
                     .unwrap_or_else(FontId::default);
 
                 let mut layout_job = LayoutJob::simple(
-                    emoji.to_string(),
+                    match self.label_prefix {
+                        LabelPrefix::Icon | LabelPrefix::IconAndText => emoji.to_string(),
+                        LabelPrefix::None | LabelPrefix::Text => String::new(),
+                    },
                     font_id.clone(),
                     ctx.style().visuals.selection.stroke.color,
                     100.0,