feat: scripts - ddcutil script to handle brightness control for extern…

Configs/.local/share/bin/extbrightnesscontrol.sh

@@ -0,0 +1,87 @@
+#!/usr/bin/env sh
+
+ScrDir=`dirname "$(realpath "$0")"`
+source $ScrDir/globalcontrol.sh
+
+monitorInfo=$( ddcutil detect )
+monitors=($( echo "$monitorInfo" | grep "I2C bus:" | awk -F ': ' '{print $2}' ))
+model=$( echo "$monitorInfo" | grep "Model:" | awk -F ': ' '{print $2}' | head -n 1 | xargs )
+
+print_error() {
+cat << "EOF"
+    ./brightnesscontrol.sh <action>
+    ...valid actions are...
+        i -- <i>ncrease  brightness [+5%]
+        d -- <d>ecrease  brightness [-5%]
+        s -- <s>et VALUE brightness [VALUE%]
+        g -- <g>et       brightness
+EOF
+}
+
+get_brightness() {
+    ddcutil getvcp 10 | awk -F 'current value = ' '{print $2}' | grep -o '[0-9]\+' | head -n 1
+}
+
+send_notification() {
+    brightness=$(get_brightness)
+    angle=$(((($brightness + 2) / 5) * 5))
+    ico="$HOME/.config/dunst/icons/vol/vol-${angle}.svg"
+
+    notify-send -a "t2" -r 91190 -t 800 -i "${ico}" "Brightness ${brightness}" "${model}"
+}
+
+set_brightness() {
+    for v in "${monitors[@]}" ; do
+        bus=$( echo $v | awk -F '-' '{print $2}' )
+
+        case $1 in
+        i)
+            ddcutil setvcp 10 + $2 --bus=$bus
+            ;;
+        d)
+            ddcutil setvcp 10 - $2 --bus=$bus
+            ;;
+        *)
+            ddcutil setvcp 10 $2 --bus=$bus
+            ;;
+        esac
+    done
+}
+
+case $1 in
+i)
+    currentBrightness=$(get_brightness)
+    if [[ "$currentBrightness" -lt 10 ]] ; then
+        # increase the brightness by 1% if less than 10%
+        set_brightness i 1
+    else
+        # increase the brightness by 5% otherwise
+        set_brightness i 5
+    fi
+    send_notification ;;
+d)
+    currentBrightness=$(get_brightness)
+    if [[ "$currentBrightness" -le 2 ]] ; then
+        # avoid 0% brightness
+        set_brightness s 2
+    elif [[ "$currentBrightness" -le 10 ]] ; then
+        # decrease the brightness by 1% if less than 10%
+        set_brightness d 1
+    else
+        # decrease the brightness by 5% otherwise
+        set_brightness d 5
+    fi
+    send_notification ;;
+s)
+    if [[ $2 -le 2 ]] ; then
+        # avoid 0% brightness
+        set_brightness s 2
+    else
+        set_brightness s $2
+    fi
+    send_notification ;;
+g)
+    send_notification ;;
+*)
+    print_error ;;
+esac