[AGS] Bar: BT, Audio, SysInfo, Brightness

config/astal/components/bar/util/brightness.ts

@@ -12,7 +12,7 @@ export default class Brightness extends GObject.Object {
     static get_default() {
         if (!this.instance)
             this.instance = new Brightness()
-
+        
         return this.instance
     }
 
@@ -20,6 +20,10 @@ export default class Brightness extends GObject.Object {
     #kbd = get(`--device ${kbd} get`)
     #screenMax = get("max")
     #screen = get("get") / (get("max") || 1)
+    #screenAvailable = false
+
+    @property(Boolean)
+    get screenAvailable() { return this.#screenAvailable }
 
     @property(Number)
     get kbd() { return this.#kbd }
@@ -67,5 +71,12 @@ export default class Brightness extends GObject.Object {
             this.#kbd = Number(v) / this.#kbdMax
             this.notify("kbd")
         })
+
+        // Check if there is a screen available
+        try {
+            get( 'g -c backlight' );
+        } catch ( _ ) {
+            this.#screenAvailable = false;
+        }
     }
 }