Create ddc-brightness-control.sh

user_scripts/swayosd/ddc-brightness-control.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+
+STEP=5
+STATE_FILE="/tmp/ddc-brightness"
+COOLDOWN_FILE="/tmp/ddc-last-run"
+
+# --- initialize state file if missing ---
+if [[ ! -f "$STATE_FILE" ]]; then
+    read -r cur_b _ <<< "$(ddcutil getvcp 10 2>/dev/null \
+        | awk -F'[=,]' '/current value/{gsub(/ /,"",$2); print $2}')"
+    echo "${cur_b:-50}" > "$STATE_FILE"
+fi
+
+read -r current < "$STATE_FILE"
+MAX=100
+
+case "$1" in
+    status)
+        pct=$current
+        echo "{\"percentage\":$pct,\"text\":\"$pct%\",\"tooltip\":\"Brightness: $pct%\"}"
+        exit 0
+        ;;
+
+    up|down)
+        NOW=$(date +%s%3N)
+        LAST=$(cat "$COOLDOWN_FILE" 2>/dev/null || echo 0)
+        (( NOW - LAST < 150 )) && exit 0
+        echo "$NOW" > "$COOLDOWN_FILE"
+
+        if [[ "$1" == "up" ]]; then
+            current=$(( current + STEP ))
+        else
+            current=$(( current - STEP ))
+        fi
+
+        [[ $current -lt 0   ]] && current=0
+        [[ $current -gt MAX ]] && current=$MAX
+
+        echo "$current" > "$STATE_FILE"
+
+        ddcutil setvcp 10 "$current" --noverify &
+
+        percent=$(awk "BEGIN {printf \"%.4f\", $current/$MAX}")
+        [[ $current -lt 50 ]] && icon="brightness-low" || icon="brightness-high"
+
+        swayosd-client --custom-progress "$percent" \
+                       --custom-progress-text "${current}%" \
+                       --custom-icon "$icon"
+
+        pkill -RTMIN+8 waybar 2>/dev/null
+        ;;
+
+    reset)
+        rm -f "$STATE_FILE"
+        ;;
+esac