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authorEuAndreh <eu@euandre.org>2022-05-12 12:01:54 -0300
committerEuAndreh <eu@euandre.org>2022-05-12 12:01:54 -0300
commit90eaebabcaaea74237f34cf05709625345f276cc (patch)
tree349e7609d20ecfb6567652a7e28595cec9647eb0 /bin/brightness
parent.usr/etc/i3/config: WIP setup extra bindings (diff)
downloaddotfiles-90eaebabcaaea74237f34cf05709625345f276cc.tar.gz
dotfiles-90eaebabcaaea74237f34cf05709625345f276cc.tar.xz
Move Git repository into ~/.usr/.git/
Diffstat (limited to 'bin/brightness')
-rwxr-xr-xbin/brightness13
1 files changed, 13 insertions, 0 deletions
diff --git a/bin/brightness b/bin/brightness
new file mode 100755
index 0000000..8e178ad
--- /dev/null
+++ b/bin/brightness
@@ -0,0 +1,13 @@
+#!/bin/sh
+set -eu
+
+BRIGHTNESS_DIFF="$1"
+
+DEVICE="$(cat "$XDG_CONFIG_HOME"/backlight-device)"
+HANDLER="/sys/class/backlight/$DEVICE"
+
+OLD_BRIGHTNESS="$(cat "$HANDLER"/brightness)"
+MAX_BRIGHTNESS="$(cat "$HANDLER"/max_brightness)"
+SUM=$((OLD_BRIGHTNESS + BRIGHTNESS_DIFF))
+NEW_BRIGHTNESS="$(clamp -- "$SUM" 0 "$MAX_BRIGHTNESS")"
+echo "$NEW_BRIGHTNESS" > "$HANDLER"/brightness || sudo chmod 666 "$HANDLER/brightness"