tablet-monitor.sh

#!/usr/bin/env bash
# Create/destroy a temporary 1920x1200 (landscape mode) virtual monitor with VNC for tablet use

ACTION="${1:-start}"
PORT="${2:-5900}"

case "$ACTION" in
  start)
    hyprctl output create headless
    MONITOR=$(hyprctl monitors -j | jq -r '.[] | select(.name | startswith("HEADLESS-")) | .name' | tail -1)
    if [[ -z "$MONITOR" ]]; then
      echo "Failed to create virtual monitor"
      exit 1
    fi
    hyprctl keyword monitor "$MONITOR,1920x1200@60,auto,1.5"
    echo "Created virtual monitor: $MONITOR"

    # sleep 1
    wayvnc -o "$MONITOR" 0.0.0.0 "$PORT" &
    WAYVNC_PID=$!
    echo "$WAYVNC_PID" > /tmp/tablet-wayvnc.pid
    echo "wayvnc running on port $PORT (pid $WAYVNC_PID)"
    echo "Connect from tablet with a VNC client to $(ip -4 -o addr show | awk '!/127.0.0.1/ {print $4}' | cut -d/ -f1 | head -1):$PORT"
    echo "Run '$0 stop' to tear down"
    ;;
  stop)
    if [[ -f /tmp/tablet-wayvnc.pid ]]; then
      kill "$(cat /tmp/tablet-wayvnc.pid)" 2>/dev/null
      rm /tmp/tablet-wayvnc.pid
      echo "Stopped wayvnc"
    fi
    MONITOR=$(hyprctl monitors -j | jq -r '.[] | select(.name | startswith("HEADLESS-")) | .name' | tail -1)
    if [[ -z "$MONITOR" ]]; then
      echo "No virtual monitor found"
      exit 0
    fi
    hyprctl output remove "$MONITOR"
    echo "Removed virtual monitor: $MONITOR"
    ;;
  *)
    echo "Usage: $0 {start|stop} [port]"
    exit 1
    ;;
esac