Added adaptive icon, changing based on the brightness value. Increased default interval. Updated README.

README.md

@@ -5,8 +5,8 @@ The brightnessctl package is the only one that managed to change the brightness
 
 ### Installation
 1. Download the files as a ZIP or clone into a temporary directory.
-2. Move `brightnessctl.sh` to `~/.config/polybar/` file.
-3. Make `brightnessctl.sh` executable by executing `chmod u+x ~/.config/polybar/brightnessctl.sh`.
+2. Move `brightnessctl.sh` to `~/.config/polybar/` folder.
+3. Make `brightnessctl.sh` executable by executing `chmod +x ~/.config/polybar/brightnessctl.sh`.
 4. Decide where you will put the module. Depending on your choice, add `brightnessctl` to the `modules-left`,`modules-center` or `modules-right` variable in your polybar config file.
 5. Add the following lines to the `~/.config/polybar/config` file:
     
@@ -17,12 +17,13 @@ exec = ~/.config/polybar/brightnessctl.sh
 
 scroll-up = exec brightnessctl set +5%
 scroll-down = exec brightnessctl set 5%-
-interval = 0.2
+interval = 0.5
 
-format-prefix = " "
 label = %output%
-label-foreground = #FFFFFF
+label-foreground = ${colors.foreground}
 ```
 
+6. Adjust the `interval` and `label-foreground` values to your liking.
+
 ### Note
-- This module uses a custom icon from the `MaterialIcons` font package. If you do not have this you may install it, or choose your own gliph, simply replace the character that is assigned to `format-prefix`.
+- This module uses custom icons from the `MaterialIcons` font package by Google. If you do not have this you may install it (it's most likely in your repository), or choose your own gliph, simply replace the character that is assigned to `format-prefix`.

src/brightnessctl.sh

@@ -1,3 +1,16 @@
 #!/bin/bash
-echo "$(brightnessctl | grep -o "(.*" | tr -d "()")"
+BRIGHTNESS_VALUE=`brightnessctl | grep -o "(.*" | tr -d "()"`
+BRIGHTNESS_NR=${BRIGHTNESS_VALUE//%}
+
+if [ $BRIGHTNESS_NR -lt 20 ]; then
+	BRIGHTNESS_ICON=''
+elif [ $BRIGHTNESS_NR -lt 50 ]; then
+	BRIGHTNESS_ICON=''
+elif [ $BRIGHTNESS_NR -lt 80 ]; then
+	BRIGHTNESS_ICON=''
+else
+	BRIGHTNESS_ICON=''
+fi
+
+echo "$BRIGHTNESS_ICON $BRIGHTNESS_VALUE"
 

src/config

@@ -15,8 +15,7 @@ exec = ~/.config/polybar/brightnessctl.sh
 
 scroll-up = exec brightnessctl set +5%
 scroll-down = exec brightnessctl set 5%-
-interval = 0.2
+interval = 0.5
 
-format-prefix = " "
 label = %output%
-label-foreground = #FFFFFF
+label-foreground = ${colors.foreground}