dotfiles/scripts/bin/system/backlight-ctl.sh

53 lines
768 B
Bash
Executable File

#!/usr/bin/env bash
# Print help info.
function print_help() {
echo 'Control the backlight brightness with animation.'
echo
echo '-i -- increase brightness'
echo '-d -- decrease brightness'
}
# Increase backlight brightness.
function increase() {
run_animation 'light -A 0.1'
}
# Decrease backlight brightness.
function decrease() {
run_animation 'light -U 0.1'
}
# Run animation task.
function run_animation() {
local cmd="${1}"
i=0
while [ $i -lt 50 ]; do
${cmd}
sleep 0.01
((i = i + 1));
done
}
# Check arguments
for i in "$@"; do
case $i in
-h|--help)
print_help
exit 0
;;
-i)
increase
;;
-d)
decrease
;;
*)
print_help
exit 1
;;
esac
done