oh hey it's that thing I said in my patreon update

This commit was sponsored by Seth Larson, Quentin Pradet, zts, and my
other patrons.  If you want to join them, you can support my work at
https://glyph.im/patrons/.

Author: glyph

src/pomodouroboros/linux/gtk_progress_bar.py

@@ -57,7 +57,9 @@
 from cairo import Region  # type:ignore
 
 
-def makeOneProgressBar(display: Gdk.Display, monitor: Gdk.Monitor, ewmh: EWMH) -> None:
+def makeOneProgressBar(
+    display: Gdk.Display, monitor: Gdk.Monitor, ewmh: EWMH
+) -> Gtk.ApplicationWindow:
     win = Gtk.ApplicationWindow(application=app, title="Should Never Focus")
     win.set_opacity(0.25)
     win.set_decorated(False)
@@ -75,6 +77,7 @@ def refraction() -> bool:
         frac %= 1.0
         prog.set_fraction(frac)
         return True
+
     to = GLib.timeout_add((1000 // 10), refraction)
     prog.set_fraction(0.7)
     win.set_child(prog)
@@ -96,8 +99,14 @@ def refraction() -> bool:
     xlibwin = display.create_resource_object("window", xid)
 
     # Always on top
-    print(f'moving to {monitor_geom.x} {monitor_geom.y} {monitor_geom.width}')
-    ewmh.setMoveResizeWindow(xlibwin, x=monitor_geom.x, y=monitor_geom.y + (monitor_geom.height - 150), w=monitor_geom.width, h=150)
+    print(f"moving to {monitor_geom.x} {monitor_geom.y} {monitor_geom.width}")
+    ewmh.setMoveResizeWindow(
+        xlibwin,
+        x=monitor_geom.x,
+        y=monitor_geom.y + (monitor_geom.height - 150),
+        w=monitor_geom.width,
+        h=150,
+    )
     ewmh.setWmState(xlibwin, 1, "_NET_WM_STATE_ABOVE")
 
     # Draw even over the task bar (this breaks stuff)
@@ -107,6 +116,8 @@ def refraction() -> bool:
     ewmh.setWmState(xlibwin, 1, "_NET_WM_STATE_SKIP_TASKBAR")
     ewmh.setWmState(xlibwin, 1, "_NET_WM_STATE_SKIP_PAGER")
     display.flush()
+    return win
+
 
 # When the application is launched…
 def on_activate(app: Gtk.Application) -> None:
@@ -119,8 +130,36 @@ def on_activate(app: Gtk.Application) -> None:
     display = XOpenDisplay()
     screen = display.screen()
     ewmh = EWMH(display, screen.root)
-    for monitor in gdisplay.get_monitors():
-        makeOneProgressBar(display, monitor, ewmh)
+    bars: list[Gtk.ApplicationWindow] = []
+
+    def remonitor() -> bool:
+        print("remonitoring")
+        prevbars = bars[:]
+        for monitor in gdisplay.get_monitors():
+            bars.append(makeOneProgressBar(display, monitor, ewmh))
+        for prevbar in prevbars:
+            prevbar.close()
+        return False
+
+    def remonitor_later(
+        display: str,
+        path: str,
+        iface: str,
+        signal: str,
+        args: tuple[object, ...],
+    ) -> None:
+        print("remonitoring...", display)
+        GLib.timeout_add(1000, remonitor)
+
+    from pydbus import SessionBus
+
+    bus = SessionBus()
+    bus.subscribe(
+        iface="org.gnome.Mutter.DisplayConfig",
+        signal="MonitorsChanged",
+        signal_fired=remonitor_later,
+    )
+    remonitor()
 
 
 if __name__ == "__main__":