dimmer: handle wide screens split in two

bin/xss-dimmer

@@ -19,6 +19,7 @@ import threading
 import time
 import math
 import os
+import warnings
 from Xlib import display, X
 from Xlib.error import BadWindow
 from Xlib.protocol.event import MapNotify
@@ -157,6 +158,7 @@ if __name__ == "__main__":
     add("--font", default="Iosevka Aile", help="font for countdown")
     add("--locker", default="xsecurelock", help="quit if window class detected")
     add("--background", help="use a background instead of black")
+    add("--no-randr", help="disable RandR", action="store_true")
     add(
         "--easing-function",
         default="none",
@@ -166,6 +168,16 @@ if __name__ == "__main__":
     add("--sound", help="play a sound for each second elapsed while dimmer running")
     options = parser.parse_args()
 
+    # This is a hack!
+    try:
+        with open(
+            os.path.join(os.environ["XDG_RUNTIME_DIR"], "i3", "outputs.txt")
+        ) as f:
+            if int(f.read()) == 1:
+                options.no_randr = True
+    except:
+        pass
+
     background = None
     if options.background:
         try:
@@ -175,16 +187,25 @@ if __name__ == "__main__":
 
     # Setup dimmer windows on each monitor
     gdisplay = Gdk.Display.get_default()
-    for i in range(gdisplay.get_n_monitors()):
-        geom = gdisplay.get_monitor(i).get_geometry()
+    geoms = []
+    if options.no_randr:
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", category=DeprecationWarning)
+            screen = gdisplay.get_screen(0)
+            geoms.append((0, 0, screen.get_width(), screen.get_height()))
+    else:
+        for i in range(gdisplay.get_n_monitors()):
+            geom = gdisplay.get_monitor(i).get_geometry()
+            geoms.append((geom.x, geom.y, geom.width, geom.height))
 
+    for x, y, width, height in geoms:
         window = Gtk.Window()
         window.set_app_paintable(True)
         window.set_type_hint(Gdk.WindowTypeHint.SPLASHSCREEN)
         window.set_visual(window.get_screen().get_rgba_visual())
 
-        window.set_default_size(geom.width, geom.height)
-        window.move(geom.x, geom.y)
+        window.set_default_size(width, height)
+        window.move(x, y)
 
         window.connect("draw", on_draw, options, background, now)
         window.connect("delete-event", Gtk.main_quit)