Script to run sway wm on vnc

start-sway-vnc.sh

#!/bin/bash

# start-sway-vnc.sh
# Copyright (C) 2024 Behzad Asbahi <behzadasbahi@gmail.com>
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This script runs a vnc server with Sway window manager.


# You probably want to modify resolution and scale. the following values are
# suitable just for mobile. If these variables get unset, sway will use the
# default resolution and scale of the monitor.
export RESOLUTION=720x1440
export SCALE=2

# It gets current ip address of interface wls1 which is probably your wi-fi.
# if you don't use wi+fi you must change.
export IP_ADDRESS=$(ip -4 addr show wls1 | grep -oP '(?<=inet\s)\d+(\.\d+){3}')

# Port of the vnc server
export PORT=7060

# Stop sway after pressing Ctrl+C
trap ctrl_c INT
function ctrl_c() {
    swaymsg exit --socket /tmp/sway-ipc*
    exit 0
}

# Start sway
export XDG_RUNTIME_DIR=/tmp/ WLR_BACKENDS=headless WLR_LIBINPUT_NO_DEVICES=1
sway &
sleep 1
swaymsg --socket /tmp/sway-ipc* output HEADLESS-1 mode $RESOLUTION
swaymsg --socket /tmp/sway-ipc* output HEADLESS-1 scale $SCALE
swaymsg --pretty --socket /tmp/sway-ipc* exec "WAYLAND_DISPLAY=wayland-1 wayvnc $IP_ADDRESS $PORT"

# Wait until pressing Ctrl+C
read -r -d '' _ </dev/tty