Add transparency to inactive windows in sway

linux_home/.config/sway/config

@@ -17,6 +17,9 @@ exec swayidle -w \
          timeout 300 'swaylock -f -c 000000' \
          timeout 600 'swaymsg "output * power off"' resume 'swaymsg "output * power on"' \
          before-sleep 'swaylock -f -c 000000'
+         # /home/larssonmartin1998-asahi/.config/sway/swayidle_inhibit.sh
+
+exec_always --no-startup-id ~/.config/sway/dim_inactive.windows.py
 
 ### Key bindings
     # Start a terminal

linux_home/.config/sway/dim_inactive.windows.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+# From
+# https://www.reddit.com/r/swaywm/comments/c4zb8l/dim_unfocused_windows/es0dg11/.
+# This script is a modified version of the one from the link above with
+# interrupt handler.
+
+# This script requires i3ipc-python package (install it from a system package
+# manager or pip).
+# It makes inactive windows transparent. Use `TRANSPARENCY_VALUE` variable to
+# control the transparency strength in range of 0…1; 0 is fully transparent.
+# The most-recently active window on each monitor stays opaque, not just the
+# active window.
+
+import signal
+import sys
+from typing import Optional
+
+import i3ipc
+
+TRANSPARENCY_VALUE: str = '0.85'
+ipc = i3ipc.Connection()
+g_prev_focused: Optional[i3ipc.con.Con] = None
+g_prev_workspace: int = ipc.get_tree().find_focused().workspace().num
+
+for window in ipc.get_tree():
+    if window.focused:
+        g_prev_focused = window
+    else:
+        window.command('opacity ' + TRANSPARENCY_VALUE)
+
+
+def signal_handler(sig, frame):
+    for window in ipc.get_tree():
+        window.command('opacity 1.0')
+    sys.exit(0)
+
+
+def on_window_focus(ipc: i3ipc.connection.Connection,
+                    event: i3ipc.events.WindowEvent):
+    global g_prev_focused
+    global g_prev_workspace
+
+    focused = event.container
+    workspace = ipc.get_tree().find_focused().workspace().num
+
+    # https://github.com/swaywm/sway/issues/2859
+    if focused.id != g_prev_focused.id:
+        focused.command('opacity 1.0')
+        if workspace == g_prev_workspace:
+            g_prev_focused.command('opacity ' + TRANSPARENCY_VALUE)
+        g_prev_focused = focused
+        g_prev_workspace = workspace
+
+
+signal.signal(signal.SIGINT, signal_handler)
+signal.signal(signal.SIGTERM, signal_handler)
+
+ipc.on('window::focus', on_window_focus)
+# Blocking call.
+ipc.main()
+