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