dimmer: handle wide screens split in two

bin/wallpaper

@@ -380,10 +380,17 @@ if __name__ == "__main__":
         "--target",
         default="background.png",
         help="write background to FILE",
+        metavar="FILE",
     )
     group.add_argument(
         "--compression", default=0, type=int, help="compression level when saving"
     )
+    group.add_argument(
+        "--outputs",
+        default=None,
+        help="write number of outputs to FILE",
+        metavar="FILE",
+    )
     options = parser.parse_args()
 
     # Logging
@@ -420,6 +427,10 @@ if __name__ == "__main__":
             )
         build(background, wallpaper_parts)
         save(background, options.target, options.compression)
+
+        if options.outputs is not None:
+            with open(options.outputs, "w") as f:
+                f.write(str(len(outputs)))
     except Exception as e:
         logger.exception("%s", e)
         sys.exit(1)

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()
+    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)

dotfiles/systemd/wallpaper.service

@@ -4,10 +4,12 @@ PartOf=graphical-session.target
 
 [Service]
 Environment=WALLPAPER_DIRECTORY=%h/.config/i3/wallpapers
-Environment=WALLPAPER_OUTPUT=%t/i3/current-wallpaper.png
+Environment=WALLPAPER_TARGET=%t/i3/current-wallpaper.png
+Environment=WALLPAPER_OUTPUTS=%t/i3/outputs.txt
 ExecStart=/usr/bin/mkdir -p %t/i3
 ExecStart=%h/.config/i3/bin/wallpaper --directory $WALLPAPER_DIRECTORY \
-                                      --target $WALLPAPER_OUTPUT
-ExecStart=/usr/bin/hsetroot -root -center $WALLPAPER_OUTPUT
+                                      --target $WALLPAPER_TARGET \
+                                      --outputs $WALLPAPER_OUTPUTS
+ExecStart=/usr/bin/hsetroot -root -center $WALLPAPER_TARGET
 Type=oneshot
 RemainAfterExit=false

dotfiles/systemd/xss-dimmer@.service

@@ -2,7 +2,8 @@
 Description=Screen dimmer
 
 [Service]
-ExecStart=%h/.config/i3/bin/xss-dimmer --delay=%i \
+ExecStart=%h/.config/i3/bin/xss-dimmer \
+   --delay=%i \
    --background=%t/i3/current-wallpaper.png \
    --sound=/usr/share/sounds/freedesktop/stereo/audio-volume-change.oga
 TimeoutSec=1