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omarchy/bin/omarchy-brightness-keyboard
David Heinemeier Hansson d884265d46 Add keyboard brightness controls
2026-01-19 17:53:19 -04:00

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#!/bin/bash
# Adjust keyboard backlight brightness using available steps.
# Usage: omarchy-brightness-keyboard <up|down>
direction="${1:-up}"
# Find keyboard backlight device (look for *kbd_backlight* pattern in leds class).
device=""
for candidate in /sys/class/leds/*kbd_backlight*; do
if [[ -e "$candidate" ]]; then
device="$(basename "$candidate")"
break
fi
done
if [[ -z "$device" ]]; then
echo "No keyboard backlight device found" >&2
exit 1
fi
# Get current and max brightness to determine step size.
max_brightness="$(brightnessctl -d "$device" max)"
current_brightness="$(brightnessctl -d "$device" get)"
# Calculate step as one unit (keyboards typically have discrete levels like 0-3).
if [[ "$direction" == "up" ]]; then
new_brightness=$((current_brightness + 1))
[[ $new_brightness -gt $max_brightness ]] && new_brightness=$max_brightness
else
new_brightness=$((current_brightness - 1))
[[ $new_brightness -lt 0 ]] && new_brightness=0
fi
# Set the new brightness.
brightnessctl -d "$device" set "$new_brightness" >/dev/null
# Use SwayOSD to display the new brightness setting.
percent=$((new_brightness * 100 / max_brightness))
omarchy-swayosd-brightness "$percent"