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#!/bin/sh
# Cycle display mode: laptop-off → side-by-side → mirror
# Usage: display-toggle.sh [init]
# Bound to F7 in sway config; also runs at startup with "init"
set -e
STATE_FILE="${XDG_RUNTIME_DIR:-/tmp}/display-mode"
MIRROR_PID="${XDG_RUNTIME_DIR:-/tmp}/wl-mirror.pid"
LOG="${XDG_RUNTIME_DIR:-/tmp}/display-toggle.log"
log() { echo "$(date +%T) $*" >> "$LOG"; }
OUTPUTS=$(swaymsg -t get_outputs -r)
LAPTOP=$(echo "$OUTPUTS" | jq -r '[.[] | select(.name | test("^eDP")) | .name] | first // empty')
EXTERNAL=$(echo "$OUTPUTS" | jq -r '[.[] | select(.name | test("^eDP") | not) | .name] | first // empty')
log "laptop=$LAPTOP external=$EXTERNAL arg=$1"
if [ -z "$EXTERNAL" ]; then
[ -z "$1" ] && notify-send "Display" "No external display connected"
log "no external display, exiting"
exit 0
fi
if [ -z "$LAPTOP" ]; then
log "no laptop display detected, exiting"
exit 0
fi
# Stop any running wl-mirror
if [ -f "$MIRROR_PID" ]; then
kill "$(cat "$MIRROR_PID")" 2>/dev/null || true
rm -f "$MIRROR_PID"
fi
LAPTOP_WIDTH=$(echo "$OUTPUTS" | jq -r ".[] | select(.name == \"$LAPTOP\") | .current_mode.width")
[ -z "$LAPTOP_WIDTH" ] && LAPTOP_WIDTH=1920
# On init, go straight to laptop-off; otherwise cycle
if [ "$1" = "init" ]; then
NEXT="laptop-off"
else
CURRENT=$(cat "$STATE_FILE" 2>/dev/null || echo "laptop-off")
case "$CURRENT" in
laptop-off) NEXT="side-by-side" ;;
side-by-side) NEXT="mirror" ;;
*) NEXT="laptop-off" ;;
esac
fi
log "switching to $NEXT"
case "$NEXT" in
mirror)
swaymsg output "$LAPTOP" enable
swaymsg output "$EXTERNAL" enable
swaymsg focus output "$EXTERNAL"
wl-mirror "$LAPTOP" &
echo $! > "$MIRROR_PID"
sleep 0.3
swaymsg focus output "$LAPTOP"
echo "mirror" > "$STATE_FILE"
[ -z "$1" ] && notify-send "Display" "Mirror mode"
;;
laptop-off)
swaymsg output "$LAPTOP" disable
swaymsg output "$EXTERNAL" enable
swaymsg workspace number 1
echo "laptop-off" > "$STATE_FILE"
log "disabled $LAPTOP"
[ -z "$1" ] && notify-send "Display" "Laptop screen off"
;;
side-by-side)
swaymsg output "$LAPTOP" enable pos 0 0
swaymsg output "$EXTERNAL" enable pos "$LAPTOP_WIDTH" 0
echo "side-by-side" > "$STATE_FILE"
[ -z "$1" ] && notify-send "Display" "Side by side"
;;
esac
log "done"
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