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#!/usr/bin/env bash
# ==================================================
# KoolDots (2026)
# Project URL: https://github.com/LinuxBeginnings
# License: GNU GPLv3
# SPDX-License-Identifier: GPL-3.0-or-later
# ==================================================
# Script for changing blur levels on the fly with desktop notifications.
# Supports cycling preset levels (Off -> Low -> Medium -> High -> Ultra),
# stepping up/down (--inc / --dec), or selecting explicit levels.
# Uses flock to prevent double-execution from dual-config (.conf + .lua) loading.
set -uo pipefail
notif="${XDG_CONFIG_HOME:-$HOME/.config}/swaync/images"
icons_dir="${XDG_CONFIG_HOME:-$HOME/.config}/swaync/icons"
config_home="${XDG_CONFIG_HOME:-$HOME/.config}"
hypr_dir="$config_home/hypr"
lua_entry="$hypr_dir/hyprland.lua"
legacy_lua_entry="$config_home/hyprland.lua"
if [[ -f "$lua_entry" || -f "$legacy_lua_entry" ]]; then
hypr_config_mode="lua"
else
hypr_config_mode="conf"
fi
LOCK="/tmp/.hypr_change_blur_${HYPRLAND_INSTANCE_SIGNATURE:-default}.lock"
# Pick appropriate icons
if [[ -f "$icons_dir/palette.png" ]]; then
ICON_ON="$icons_dir/palette.png"
elif [[ -f "$notif/ja.png" ]]; then
ICON_ON="$notif/ja.png"
else
ICON_ON="$notif/note.png"
fi
if [[ -f "$notif/note.png" ]]; then
ICON_OFF="$notif/note.png"
else
ICON_OFF="$ICON_ON"
fi
(
flock -n 200 || exit 0
# Check if blur is currently enabled
BLUR_ENABLED=$(hyprctl -j getoption decoration:blur:enabled 2>/dev/null | jq -r ".bool // empty")
if [[ -z "$BLUR_ENABLED" || "$BLUR_ENABLED" == "null" ]]; then
BLUR_ENABLED=$(hyprctl getoption decoration:blur:enabled 2>/dev/null | awk 'NR==1{print $2}')
fi
PASSES=$(hyprctl -j getoption decoration:blur:passes 2>/dev/null | jq -r ".int // empty")
if [[ -z "$PASSES" || "$PASSES" == "null" ]]; then
PASSES=$(hyprctl getoption decoration:blur:passes 2>/dev/null | awk 'NR==1{print $2}')
fi
# Determine current level (0: Off, 1: Low, 2: Medium, 3: High, 4: Ultra)
if [[ "$BLUR_ENABLED" == "false" || "$BLUR_ENABLED" == "0" || "${PASSES:-0}" -le 0 ]]; then
CURRENT_LEVEL=0
elif [ "${PASSES}" -eq 1 ]; then
CURRENT_LEVEL=1
elif [ "${PASSES}" -eq 2 ]; then
CURRENT_LEVEL=2
elif [ "${PASSES}" -eq 3 ]; then
CURRENT_LEVEL=3
else
CURRENT_LEVEL=4
fi
ACTION="${1:---toggle}"
case "$ACTION" in
--inc|+|-inc|inc|up|--up)
TARGET_LEVEL=$((CURRENT_LEVEL + 1))
(( TARGET_LEVEL > 4 )) && TARGET_LEVEL=4
;;
--dec|-|-dec|dec|down|--down)
TARGET_LEVEL=$((CURRENT_LEVEL - 1))
(( TARGET_LEVEL < 0 )) && TARGET_LEVEL=0
;;
--off|off|0)
TARGET_LEVEL=0
;;
--low|low|1)
TARGET_LEVEL=1
;;
--med|--medium|--normal|medium|normal|2)
TARGET_LEVEL=2
;;
--high|high|3)
TARGET_LEVEL=3
;;
--ultra|--max|ultra|max|4)
TARGET_LEVEL=4
;;
--toggle|toggle|"")
# Cycle: Off (0) -> Low (1) -> Medium (2) -> High (3) -> Ultra (4) -> Off (0)
case "$CURRENT_LEVEL" in
0) TARGET_LEVEL=1 ;;
1) TARGET_LEVEL=2 ;;
2) TARGET_LEVEL=3 ;;
3) TARGET_LEVEL=4 ;;
*) TARGET_LEVEL=0 ;;
esac
;;
*)
# Parse numeric arg directly
if [[ "$ACTION" =~ ^[0-4]$ ]]; then
TARGET_LEVEL="$ACTION"
else
TARGET_LEVEL=$(( (CURRENT_LEVEL + 1) % 5 ))
fi
;;
esac
# Map target level to Hyprland blur properties
case "$TARGET_LEVEL" in
0)
SET_ENABLED="false"
SET_SIZE=0
SET_PASSES=0
LEVEL_NAME="Disabled"
PERCENT=0
ICON="$ICON_OFF"
DETAIL="Blur Off"
;;
1)
SET_ENABLED="true"
SET_SIZE=3
SET_PASSES=1
LEVEL_NAME="Low"
PERCENT=25
ICON="$ICON_ON"
DETAIL="Size: 3 | Passes: 1"
;;
2)
SET_ENABLED="true"
SET_SIZE=6
SET_PASSES=2
LEVEL_NAME="Medium"
PERCENT=50
ICON="$ICON_ON"
DETAIL="Size: 6 | Passes: 2"
;;
3)
SET_ENABLED="true"
SET_SIZE=8
SET_PASSES=3
LEVEL_NAME="High"
PERCENT=75
ICON="$ICON_ON"
DETAIL="Size: 8 | Passes: 3"
;;
4|*)
SET_ENABLED="true"
SET_SIZE=10
SET_PASSES=4
LEVEL_NAME="Ultra"
PERCENT=100
ICON="$ICON_ON"
DETAIL="Size: 10 | Passes: 4"
;;
esac
if [[ "$hypr_config_mode" == "lua" ]]; then
hyprctl -r eval "hl.config({ decoration = { blur = { enabled = ${SET_ENABLED}, size = ${SET_SIZE}, passes = ${SET_PASSES}, ignore_opacity = true, xray = false, new_optimizations = true } } })" >/dev/null 2>&1 || true
else
if [[ "$SET_ENABLED" == "true" ]]; then
hyprctl keyword decoration:blur:enabled 1
else
hyprctl keyword decoration:blur:enabled 0
fi
hyprctl keyword decoration:blur:size "$SET_SIZE"
hyprctl keyword decoration:blur:passes "$SET_PASSES"
hyprctl keyword decoration:blur:ignore_opacity 1
hyprctl keyword decoration:blur:xray 0
hyprctl keyword decoration:blur:new_optimizations 1
fi
# Send notification
if command -v notify-send >/dev/null 2>&1 && [[ -n "${WAYLAND_DISPLAY:-}${DISPLAY:-}" ]]; then
notify-send -e \
-h string:x-canonical-private-synchronous:blur_notif \
-h int:value:"$PERCENT" \
-u low \
-i "$ICON" \
" Blur: ${LEVEL_NAME}" " ${DETAIL}" 2>/dev/null || true
fi
) 200>"$LOCK"
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