From 1a19bec22a45a4ca92e1ef4637b8e55286df0585 Mon Sep 17 00:00:00 2001
From: sommerfeld <sommerfeld@sommerfeld.dev>
Date: Tue, 21 Apr 2026 01:24:52 +0100
Subject: sway: auto-toggle display layout on external plug/unplug

---
 dot_config/sway/executable_display-watcher.sh | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100755 dot_config/sway/executable_display-watcher.sh

(limited to 'dot_config/sway/executable_display-watcher.sh')

diff --git a/dot_config/sway/executable_display-watcher.sh b/dot_config/sway/executable_display-watcher.sh
new file mode 100755
index 0000000..94ee943
--- /dev/null
+++ b/dot_config/sway/executable_display-watcher.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+# Watch sway output events. When the set of connected external displays
+# changes (plug/unplug), re-apply the preferred layout via display-toggle.sh.
+# Manual F7 toggles don't trip this because they don't change external count.
+set -eu
+
+has_external() {
+  swaymsg -t get_outputs -r |
+    jq -e '[.[] | select(.name | test("^eDP") | not)] | length > 0' >/dev/null
+}
+
+prev=$(has_external && echo yes || echo no)
+
+swaymsg -t subscribe -m '["output"]' | while read -r _; do
+  cur=$(has_external && echo yes || echo no)
+  if [ "$cur" != "$prev" ]; then
+    ~/.config/sway/display-toggle.sh init
+    prev="$cur"
+  fi
+done
-- 
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