mirror of
https://github.com/ItsDrike/dotfiles.git
synced 2024-12-26 13:14:35 +00:00
154 lines
4.5 KiB
Bash
Executable file
154 lines
4.5 KiB
Bash
Executable file
#!/bin/sh
|
|
|
|
|
|
# Parse arguments
|
|
# ------------------------------------------------------------------------------------
|
|
BRIGHTNESS_DIR="/sys/class/backlight/*"
|
|
SEND_NOTIFICATION=0
|
|
URGENCY="normal"
|
|
INCREASE=0
|
|
DECREASE=0
|
|
SET=0
|
|
BRIGHTNESS=0
|
|
|
|
while [ "$1" ]; do
|
|
case "$1" in
|
|
-h | --help)
|
|
cat << EOF
|
|
brightness is a cli tool that for displaying or modifying screen brightness.
|
|
|
|
Options:
|
|
-h | --help: Display this message
|
|
-n | --notification: Produce a desktop notification with brightness info
|
|
-N | --no-notification: Don't produce a desktop notification with brightness info
|
|
-u | --urgency [URGENCY]: Pass over notify-send urgency attribute (default: normal)
|
|
-i | --increase [BRIGHTNESS]: Increase the brightness by given amount
|
|
-d | --decrease [BRIGHTNESS]: Decrease the brightness by given amount
|
|
-s | --set [BRIGHTNESS]: Set new brightness level
|
|
-p | --path [DIR_PATH]: Path to brightness directory (default: /sys/class/backlight/*)
|
|
|
|
Valid values:
|
|
URGENCY: low, normal, critical
|
|
DIR_PATH: Valid path to a directory
|
|
BRIGHTNESS:
|
|
specific value - Example: 10
|
|
percentage value - Example: 10%
|
|
EOF
|
|
exit 0
|
|
;;
|
|
-n | --notification)
|
|
SEND_NOTIFICATION=1
|
|
;;
|
|
-N | --no-notification)
|
|
SEND_NOTIFICATION=0
|
|
;;
|
|
-u | --urgency)
|
|
URGENCY="$2"
|
|
shift
|
|
;;
|
|
-i | --increase)
|
|
INCREASE=1
|
|
BRIGHTNESS="$2"
|
|
shift
|
|
;;
|
|
-d | --decrease)
|
|
DECREASE=1
|
|
BRIGHTNESS="$2"
|
|
shift
|
|
;;
|
|
-s | --set)
|
|
SET=1
|
|
BRIGHTNESS="$2"
|
|
shift
|
|
;;
|
|
-p | --path)
|
|
BRIGHTNESS_DIR="$2"
|
|
shift
|
|
;;
|
|
* )
|
|
echo "Unknown argument '$1', use -h or --help for help"
|
|
exit 1
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
# Define constants based on parsed arguments
|
|
# ------------------------------------------------------------------------------------
|
|
BRIGHTNESS_FILE="$BRIGHTNESS_DIR/brightness"
|
|
BRIGHTNESS_MAX="$(cat $BRIGHTNESS_DIR/max_brightness)"
|
|
|
|
|
|
# Helper functins
|
|
# ------------------------------------------------------------------------------------
|
|
|
|
# Send brightness level desktop notification, showing the given brightness level
|
|
# as progress bar, along with given message.
|
|
# $1 - brightness level (number 0-100)
|
|
# $2 - message (notification body)
|
|
send_brightness_notify() {
|
|
percent_brightness="$1"
|
|
msg="$2"
|
|
|
|
notify-send \
|
|
--app-name=brightness \
|
|
--urgency="$URGENCY" \
|
|
-h int:value:$percent_brightness \
|
|
-h string:synchronous:brightness \
|
|
"brightness" "$msg"
|
|
}
|
|
|
|
|
|
# Set brightness to given absolute value
|
|
# $1 - brightness absolute value
|
|
set_brightness() {
|
|
# there should be sudo config allowing this command without password
|
|
echo "$1" | sudo tee $BRIGHTNESS_FILE >/dev/null
|
|
}
|
|
|
|
|
|
# Main Logic
|
|
# ------------------------------------------------------------------------------------
|
|
|
|
# Determine the absolute new brightness level
|
|
if [ $INCREASE -eq 1 ] || [ $DECREASE -eq 1 ] || [ $SET -eq 1 ]; then
|
|
# If we're dealing with percentages, change to absolutes
|
|
if echo "$BRIGHTNESS" | grep -qE '%$'; then
|
|
numeric=$(echo "$BRIGHTNESS" | sed 's/.$//')
|
|
absolute=$(echo "($BRIGHTNESS_MAX / 100) * $numeric" | bc -l)
|
|
BRIGHTNESS=$(printf "%.0f" $absolute)
|
|
fi
|
|
|
|
# Get the new requested absolute brightness
|
|
if [ $SET -eq 1 ]; then
|
|
new_brightness=$BRIGHTNESS
|
|
elif [ $DECREASE -eq 1 ]; then
|
|
cur_brightness=$(cat $BRIGHTNESS_FILE)
|
|
new_brightness=$(($cur_brightness - $BRIGHTNESS))
|
|
else
|
|
cur_brightness=$(cat $BRIGHTNESS_FILE)
|
|
new_brightness=$(($cur_brightness + $BRIGHTNESS))
|
|
fi
|
|
|
|
# Ensure we respect max/min boundaries
|
|
if [ $new_brightness -lt 0 ]; then
|
|
new_brightness=0
|
|
elif [ $new_brightness -gt $BRIGHTNESS_MAX ]; then
|
|
new_brightness=$BRIGHTNESS_MAX
|
|
fi
|
|
|
|
# Update the brightness
|
|
set_brightness $new_brightness
|
|
fi
|
|
|
|
cur_brightness=$(cat $BRIGHTNESS_FILE)
|
|
percent_brightness=$(echo "($cur_brightness / $BRIGHTNESS_MAX) * 100" | bc -l)
|
|
percent_brightness_2f=$(printf "%.2f" $percent_brightness)
|
|
percent_brightness_rounded=$(printf "%.0f" $percent_brightness)
|
|
|
|
if [ $SEND_NOTIFICATION -eq 1 ]; then
|
|
send_brightness_notify "$percent_brightness_rounded" "Level: $percent_brightness_rounded"
|
|
fi
|
|
|
|
echo "Brightness: ${percent_brightness_2f}% (absolute: $cur_brightness)"
|