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/cpu.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 CpuConfig {
     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<CpuConfig> for Cpu {
@@ -36,6 +39,7 @@ impl From<CpuConfig> for Cpu {
             enable: value.enable,
             system,
             data_refresh_interval: value.data_refresh_interval.unwrap_or(10),
+            label_prefix: value.label_prefix.unwrap_or(LabelPrefix::IconAndText),
             last_updated: Instant::now(),
         }
     }
@@ -45,6 +49,7 @@ pub struct Cpu {
     pub enable: bool,
     system: System,
     data_refresh_interval: u64,
+    label_prefix: LabelPrefix,
     last_updated: Instant,
 }
 
@@ -57,7 +62,10 @@ impl Cpu {
         }
 
         let used = self.system.global_cpu_usage();
-        format!("CPU: {:.0}%", used)
+        match self.label_prefix {
+            LabelPrefix::Text | LabelPrefix::IconAndText => format!("CPU: {:.0}%", used),
+            LabelPrefix::None | LabelPrefix::Icon => format!("{:.0}%", used),
+        }
     }
 }
 
@@ -74,7 +82,12 @@ impl BarWidget for Cpu {
                     .unwrap_or_else(FontId::default);
 
                 let mut layout_job = LayoutJob::simple(
-                    egui_phosphor::regular::CIRCUITRY.to_string(),
+                    match self.label_prefix {
+                        LabelPrefix::Icon | LabelPrefix::IconAndText => {
+                            egui_phosphor::regular::CPU.to_string()
+                        }
+                        LabelPrefix::None | LabelPrefix::Text => String::new(),
+                    },
                     font_id.clone(),
                     ctx.style().visuals.selection.stroke.color,
                     100.0,