1 files changed, 31 insertions, 0 deletions
diff --git a/i3/red-shift.sh b/i3/red-shift.sh
new file mode 100755
index 0000000..bb847e6
--- /dev/null
+++ b/i3/red-shift.sh
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+OUTPUT="eDP-1-1"
+STEP=0.1
+STATE="${XDG_RUNTIME_DIR:-/tmp}/xrandr-redshift"
+
+if [[ -f "$STATE" ]]; then
+    GAMMA=$(cat "$STATE")
+else
+    GAMMA=1.0
+fi
+
+case "$1" in
+    up)
+        GAMMA=$(awk -v g="$GAMMA" -v s="$STEP" 'BEGIN {
+            g -= s
+            if (g < 0.1) g = 0.1
+            printf "%.1f", g
+        }')
+        ;;
+    down)
+        GAMMA=$(awk -v g="$GAMMA" -v s="$STEP" 'BEGIN {
+            g += s
+            if (g > 1.0) g = 1.0
+            printf "%.1f", g
+        }')
+        ;;
+esac
+
+echo "$GAMMA" > "$STATE"
+xrandr --output "$OUTPUT" --gamma "1.0:${GAMMA}:${GAMMA}"