add: brightness hotkey and icon

.config/polybar/config

@@ -208,8 +208,9 @@
 [module/xbacklight]
     type = internal/xbacklight
 
-    format = <label> <bar>
-    label = BL
+    format-prefix = " "
+    format-prefix-foreground = ${colors.foreground-alt}
+    format = <bar>
 
     bar-width = 10
     bar-indicator = |
@@ -367,26 +368,32 @@
     format-discharging = <ramp-capacity> <label-discharging>
     format-discharging-underline = ${self.format-charging-underline}
 
-    format-full-prefix = " "
+    format-full-prefix = " "
     format-full-prefix-foreground = ${colors.foreground-alt}
     format-full-underline = ${self.format-charging-underline}
 
-    ramp-capacity-0 = 
-    ramp-capacity-1 = 
-    ramp-capacity-2 = 
+    ramp-capacity-0 = 
+    ramp-capacity-1 = 
+    ramp-capacity-2 = 
+    ramp-capacity-3 = 
+    ramp-capacity-4 = 
     ramp-capacity-foreground = ${colors.foreground-alt}
 
-    animation-charging-0 = 
-    animation-charging-1 = 
-    animation-charging-2 = 
+    animation-charging-0 = 
+    animation-charging-1 = 
+    animation-charging-2 = 
+    animation-charging-3 = 
+    animation-charging-4 = 
     animation-charging-foreground = ${colors.foreground-alt}
-    animation-charging-framerate = 750
+    animation-charging-framerate = 500
 
     animation-discharging-0 = 
-    animation-discharging-1 = 
-    animation-discharging-2 = 
+    animation-discharging-1 = 
+    animation-discharging-2 = 
+    animation-discharging-3 = 
+    animation-discharging-4 = 
     animation-discharging-foreground = ${colors.foreground-alt}
-    animation-discharging-framerate = 750
+    animation-discharging-framerate = 500
 
 [module/temperature]
     type = internal/temperature

.config/sxhkd/sxhkdrc

@@ -43,6 +43,11 @@ XF86AudioLowerVolume
 #XF86AudioMute
 #   mpc toggleoutput
 
+XF86MonBrightnessUp
+    xbacklight -inc 5
+XF86MonBrightnessDown
+    [ $(xbacklight -get | cut -d'.' -f 1) -ge 10 ] && xbacklight -dec 5
+
 #
 # bspwm hotkeys
 #