Use transparency arg in the window focus event

contrib/inactive-windows-transparency.py

@@ -9,9 +9,9 @@ import argparse
 import i3ipc
 import signal
 import sys
+from functools import partial
 
-
-def on_window_focus(ipc, event):
+def on_window_focus(inactive_opacity, ipc, event):
     global prev_focused
     global prev_workspace
 
@@ -21,7 +21,7 @@ def on_window_focus(ipc, event):
     if focused.id != prev_focused.id:  # https://github.com/swaywm/sway/issues/2859
         focused.command("opacity 1")
         if workspace == prev_workspace:
-            prev_focused.command("opacity " + transparency_val)
+            prev_focused.command("opacity " + inactive_opacity)
         prev_focused = focused
         prev_workspace = workspace
 
@@ -60,5 +60,5 @@ if __name__ == "__main__":
             window.command("opacity " + args.opacity)
     for sig in [signal.SIGINT, signal.SIGTERM]:
         signal.signal(sig, lambda signal, frame: remove_opacity(ipc))
-    ipc.on("window::focus", on_window_focus)
-    ipc.main()
+    ipc.on("window::focus", partial(on_window_focus, args.opacity))
+    ipc.main()