M openbox/client.c → openbox/client.c

@@ -3197,6 +3197,11 @@ 
     ob_debug("Window %s going fullscreen (%d)",
              self->title, self->fullscreen);
 
+    if (fs) {
+        /* make sure the window is on some monitor */
+        client_find_onscreen(self, &x, &y, w, h, FALSE);
+    }
+
     client_setup_decor_and_functions(self, FALSE);
     client_move_resize(self, x, y, w, h);
 
@@ -3338,6 +3343,11 @@ if (dir == 0 || dir == 1) /* horz */
         self->max_horz = max;
     if (dir == 0 || dir == 2) /* vert */
         self->max_vert = max;
+
+    if (max) {
+        /* make sure the window is on some monitor */
+        client_find_onscreen(self, &x, &y, w, h, FALSE);
+    }
 
     client_change_state(self); /* change the state hints on the client */
 

M openbox/screen.c → openbox/screen.c

@@ -1374,7 +1374,14 @@ void screen_update_areas(void)
 {
     guint i;
     gulong *dims;
-    GList *it;
+    GList *it, *onscreen;
+
+    /* collect the clients that are on screen */
+    onscreen = NULL;
+    for (it = client_list; it; it = g_list_next(it)) {
+        if (client_monitor(it->data) != screen_num_monitors)
+            onscreen = g_list_prepend(onscreen, it->data);
+    }
 
     g_free(monitor_area);
     get_xinerama_screens(&monitor_area, &screen_num_monitors);
@@ -1448,8 +1455,10 @@ OBT_PROP_SETA32(obt_root(ob_screen), NET_WORKAREA, CARDINAL,
                     dims, 4 * screen_num_desktops);
 
     /* the area has changed, adjust all the windows if they need it */
-    for (it = client_list; it; it = g_list_next(it))
+    for (it = onscreen; it; it = g_list_next(it)) {
+        client_move_onscreen(it->data, FALSE);
         client_reconfigure(it->data, FALSE);
+    }
 
     g_free(dims);
 }