GTK+3.22: fix some GdkScreen related deprecations

12 files changed, 371 insertions, 234 deletions

diff --git a/src/gs-fade.c b/src/gs-fade.c
index d775918..f949ee5 100644
--- a/src/gs-fade.c
+++ b/src/gs-fade.c
@@ -310,7 +310,7 @@ gamma_fade_setup (GSFade *fade)
 
 
 		res = XF86VidModeGetGammaRampSize (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
-		                                   gdk_screen_get_number (gdk_screen_get_default ()),
+		                                   GDK_SCREEN_XNUMBER (gdk_screen_get_default ()),
 		                                   &screen_priv->info->size);
 		if (!res || screen_priv->info->size <= 0)
 		{
@@ -329,7 +329,7 @@ gamma_fade_setup (GSFade *fade)
 		}
 
 		res = XF86VidModeGetGammaRamp (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
-		                               gdk_screen_get_number (gdk_screen_get_default ()),
+		                               GDK_SCREEN_XNUMBER (gdk_screen_get_default ()),
 		                               screen_priv->info->size,
 		                               screen_priv->info->r,
 		                               screen_priv->info->g,
@@ -349,7 +349,7 @@ test_number:
 		/* only have gamma parameter, not ramps. */
 
 		res = XF86VidModeGetGamma (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
-		                           gdk_screen_get_number (gdk_screen_get_default ()),
+		                           GDK_SCREEN_XNUMBER (gdk_screen_get_default ()),
 		                           &screen_priv->vmg);
 		if (! res)
 		{
@@ -406,7 +406,7 @@ gamma_fade_set_alpha_gamma (GSFade *fade,
                             gdouble alpha)
 {
 	struct GSFadeScreenPrivate *screen_priv;
-	int screen_idx = gdk_screen_get_number (gdk_screen_get_default ());
+	int screen_idx = GDK_SCREEN_XNUMBER (gdk_screen_get_default ());
 
 	screen_priv = &fade->priv->screen_priv;
 	xf86_whack_gamma (screen_idx, screen_priv, alpha);
diff --git a/src/gs-grab-x11.c b/src/gs-grab-x11.c
index 5163995..c2fba38 100644
--- a/src/gs-grab-x11.c
+++ b/src/gs-grab-x11.c
@@ -49,11 +49,11 @@ static gpointer grab_object = NULL;
 
 struct GSGrabPrivate
 {
-	guint      mouse_hide_cursor : 1;
-	GdkWindow *mouse_grab_window;
-	GdkWindow *keyboard_grab_window;
-	GdkScreen *mouse_grab_screen;
-	GdkScreen *keyboard_grab_screen;
+	guint       mouse_hide_cursor : 1;
+	GdkWindow  *mouse_grab_window;
+	GdkWindow  *keyboard_grab_window;
+	GdkDisplay *mouse_grab_display;
+	GdkDisplay *keyboard_grab_display;
 
 	GtkWidget *invisible;
 };
@@ -154,14 +154,14 @@ xorg_lock_smasher_set_active (GSGrab  *grab,
 #endif /* HAVE_XF86MISCSETGRABKEYSSTATE */
 
 static int
-gs_grab_get_keyboard (GSGrab    *grab,
-                      GdkWindow *window,
-                      GdkScreen *screen)
+gs_grab_get_keyboard (GSGrab     *grab,
+                      GdkWindow  *window,
+                      GdkDisplay *display)
 {
 	GdkGrabStatus status;
 
 	g_return_val_if_fail (window != NULL, FALSE);
-	g_return_val_if_fail (screen != NULL, FALSE);
+	g_return_val_if_fail (display != NULL, FALSE);
 
 	gs_debug ("Grabbing keyboard widget=%X", (guint32) GDK_WINDOW_XID (window));
 	status = gdk_keyboard_grab (window, FALSE, GDK_CURRENT_TIME);
@@ -178,7 +178,7 @@ gs_grab_get_keyboard (GSGrab    *grab,
 		g_object_add_weak_pointer (G_OBJECT (grab->priv->keyboard_grab_window),
 		                           (gpointer *) &grab->priv->keyboard_grab_window);
 
-		grab->priv->keyboard_grab_screen = screen;
+		grab->priv->keyboard_grab_display = display;
 	}
 	else
 	{
@@ -189,26 +189,18 @@ gs_grab_get_keyboard (GSGrab    *grab,
 }
 
 static int
-gs_grab_get_mouse (GSGrab    *grab,
-                   GdkWindow *window,
-                   GdkScreen *screen,
-                   gboolean   hide_cursor)
+gs_grab_get_mouse (GSGrab     *grab,
+                   GdkWindow  *window,
+                   GdkDisplay *display,
+                   gboolean    hide_cursor)
 {
 	GdkGrabStatus status;
-#if GTK_CHECK_VERSION (3, 16, 0)
-	GdkDisplay *display;
-#endif
 	GdkCursor    *cursor;
 
 	g_return_val_if_fail (window != NULL, FALSE);
-	g_return_val_if_fail (screen != NULL, FALSE);
+	g_return_val_if_fail (display != NULL, FALSE);
 
-#if GTK_CHECK_VERSION (3, 16, 0)
-	display = gdk_window_get_display (window);
 	cursor = gdk_cursor_new_for_display (display, GDK_BLANK_CURSOR);
-#else
-	cursor = gdk_cursor_new (GDK_BLANK_CURSOR);
-#endif
 
 	gs_debug ("Grabbing mouse widget=%X", (guint32) GDK_WINDOW_XID (window));
 	status = gdk_pointer_grab (window, TRUE, 0, NULL,
@@ -227,7 +219,7 @@ gs_grab_get_mouse (GSGrab    *grab,
 		g_object_add_weak_pointer (G_OBJECT (grab->priv->mouse_grab_window),
 		                           (gpointer *) &grab->priv->mouse_grab_window);
 
-		grab->priv->mouse_grab_screen = screen;
+		grab->priv->mouse_grab_display = display;
 		grab->priv->mouse_hide_cursor = hide_cursor;
 	}
 
@@ -245,7 +237,7 @@ gs_grab_keyboard_reset (GSGrab *grab)
 		                              (gpointer *) &grab->priv->keyboard_grab_window);
 	}
 	grab->priv->keyboard_grab_window = NULL;
-	grab->priv->keyboard_grab_screen = NULL;
+	grab->priv->keyboard_grab_display = NULL;
 }
 
 static gboolean
@@ -269,7 +261,7 @@ gs_grab_mouse_reset (GSGrab *grab)
 	}
 
 	grab->priv->mouse_grab_window = NULL;
-	grab->priv->mouse_grab_screen = NULL;
+	grab->priv->mouse_grab_display = NULL;
 }
 
 gboolean
@@ -284,15 +276,15 @@ gs_grab_release_mouse (GSGrab *grab)
 }
 
 static gboolean
-gs_grab_move_mouse (GSGrab    *grab,
-                    GdkWindow *window,
-                    GdkScreen *screen,
-                    gboolean   hide_cursor)
+gs_grab_move_mouse (GSGrab     *grab,
+                    GdkWindow  *window,
+                    GdkDisplay *display,
+                    gboolean    hide_cursor)
 {
 	gboolean    result;
 	GdkWindow  *old_window;
-	GdkScreen  *old_screen;
-	gboolean   old_hide_cursor;
+	GdkDisplay *old_display;
+	gboolean    old_hide_cursor;
 
 
 	/* if the pointer is not grabbed and we have a
@@ -331,7 +323,7 @@ gs_grab_move_mouse (GSGrab    *grab,
 	gdk_x11_grab_server ();
 
 	old_window = grab->priv->mouse_grab_window;
-	old_screen = grab->priv->mouse_grab_screen;
+	old_display = grab->priv->mouse_grab_display;
 	old_hide_cursor = grab->priv->mouse_hide_cursor;
 
 	if (old_window)
@@ -339,18 +331,18 @@ gs_grab_move_mouse (GSGrab    *grab,
 		gs_grab_release_mouse (grab);
 	}
 
-	result = gs_grab_get_mouse (grab, window, screen, hide_cursor);
+	result = gs_grab_get_mouse (grab, window, display, hide_cursor);
 
 	if (result != GDK_GRAB_SUCCESS)
 	{
 		sleep (1);
-		result = gs_grab_get_mouse (grab, window, screen, hide_cursor);
+		result = gs_grab_get_mouse (grab, window, display, hide_cursor);
 	}
 
 	if ((result != GDK_GRAB_SUCCESS) && old_window)
 	{
 		gs_debug ("Could not grab mouse for new window.  Resuming previous grab.");
-		gs_grab_get_mouse (grab, old_window, old_screen, old_hide_cursor);
+		gs_grab_get_mouse (grab, old_window, old_display, old_hide_cursor);
 	}
 
 	gs_debug ("*** releasing X server grab");
@@ -361,13 +353,13 @@ gs_grab_move_mouse (GSGrab    *grab,
 }
 
 static gboolean
-gs_grab_move_keyboard (GSGrab    *grab,
-                       GdkWindow *window,
-                       GdkScreen *screen)
+gs_grab_move_keyboard (GSGrab     *grab,
+                       GdkWindow  *window,
+                       GdkDisplay *display)
 {
 	gboolean    result;
 	GdkWindow  *old_window;
-	GdkScreen  *old_screen;
+	GdkDisplay *old_display;
 
 	if (grab->priv->keyboard_grab_window == window)
 	{
@@ -393,25 +385,25 @@ gs_grab_move_keyboard (GSGrab    *grab,
 	gdk_x11_grab_server ();
 
 	old_window = grab->priv->keyboard_grab_window;
-	old_screen = grab->priv->keyboard_grab_screen;
+	old_display = grab->priv->keyboard_grab_display;
 
 	if (old_window)
 	{
 		gs_grab_release_keyboard (grab);
 	}
 
-	result = gs_grab_get_keyboard (grab, window, screen);
+	result = gs_grab_get_keyboard (grab, window, display);
 
 	if (result != GDK_GRAB_SUCCESS)
 	{
 		sleep (1);
-		result = gs_grab_get_keyboard (grab, window, screen);
+		result = gs_grab_get_keyboard (grab, window, display);
 	}
 
 	if ((result != GDK_GRAB_SUCCESS) && old_window)
 	{
-		gs_debug ("Could not grab keyboard for new window.  Resuming previous grab.");
-		gs_grab_get_keyboard (grab, old_window, old_screen);
+		gs_debug ("Could not grab keyboard for new window. Resuming previous grab.");
+		gs_grab_get_keyboard (grab, old_window, old_display);
 	}
 
 	gs_debug ("*** releasing X server grab");
@@ -453,10 +445,10 @@ gs_grab_release (GSGrab *grab)
 }
 
 gboolean
-gs_grab_grab_window (GSGrab    *grab,
-                     GdkWindow *window,
-                     GdkScreen *screen,
-                     gboolean   hide_cursor)
+gs_grab_grab_window (GSGrab     *grab,
+                     GdkWindow  *window,
+                     GdkDisplay *display,
+                     gboolean    hide_cursor)
 {
 	gboolean    mstatus = FALSE;
 	gboolean    kstatus = FALSE;
@@ -468,7 +460,7 @@ AGAIN:
 
 	for (i = 0; i < retries; i++)
 	{
-		kstatus = gs_grab_get_keyboard (grab, window, screen);
+		kstatus = gs_grab_get_keyboard (grab, window, display);
 		if (kstatus == GDK_GRAB_SUCCESS)
 		{
 			break;
@@ -490,7 +482,7 @@ AGAIN:
 
 	for (i = 0; i < retries; i++)
 	{
-		mstatus = gs_grab_get_mouse (grab, window, screen, hide_cursor);
+		mstatus = gs_grab_get_mouse (grab, window, display, hide_cursor);
 		if (mstatus == GDK_GRAB_SUCCESS)
 		{
 			break;
@@ -565,7 +557,7 @@ gs_grab_grab_root (GSGrab  *grab,
 	gdk_device_get_position (device, &screen, NULL, NULL);
 	root = gdk_screen_get_root_window (screen);
 
-	res = gs_grab_grab_window (grab, root, screen, hide_cursor);
+	res = gs_grab_grab_window (grab, root, display, hide_cursor);
 
 	return res;
 }
@@ -575,23 +567,28 @@ gboolean
 gs_grab_grab_offscreen (GSGrab *grab,
                         gboolean hide_cursor)
 {
-	GdkScreen *screen;
-	gboolean   res;
+	GdkDisplay *display;
+	GdkScreen  *screen;
+	gboolean    res;
 
 	gs_debug ("Grabbing an offscreen window");
 
 	screen = gtk_invisible_get_screen (GTK_INVISIBLE (grab->priv->invisible));
-	res = gs_grab_grab_window (grab, gtk_widget_get_window (GTK_WIDGET (grab->priv->invisible)), screen, hide_cursor);
+	display = gdk_screen_get_display (screen);
+	res = gs_grab_grab_window (grab,
+	                           gtk_widget_get_window (GTK_WIDGET (grab->priv->invisible)),
+	                           display,
+	                           hide_cursor);
 
 	return res;
 }
 
 /* This is similar to gs_grab_grab_window but doesn't fail */
 void
-gs_grab_move_to_window (GSGrab    *grab,
-                        GdkWindow *window,
-                        GdkScreen *screen,
-                        gboolean   hide_cursor)
+gs_grab_move_to_window (GSGrab     *grab,
+                        GdkWindow  *window,
+                        GdkDisplay *display,
+                        gboolean    hide_cursor)
 {
 	gboolean result = FALSE;
 
@@ -601,14 +598,14 @@ gs_grab_move_to_window (GSGrab    *grab,
 
 	do
 	{
-		result = gs_grab_move_keyboard (grab, window, screen);
+		result = gs_grab_move_keyboard (grab, window, display);
 		gdk_flush ();
 	}
 	while (!result);
 
 	do
 	{
-		result = gs_grab_move_mouse (grab, window, screen, hide_cursor);
+		result = gs_grab_move_mouse (grab, window, display, hide_cursor);
 		gdk_flush ();
 	}
 	while (!result);
diff --git a/src/gs-grab.h b/src/gs-grab.h
index 0cba10c..dad9379 100644
--- a/src/gs-grab.h
+++ b/src/gs-grab.h
@@ -56,20 +56,20 @@ GSGrab  * gs_grab_new              (void);
 void      gs_grab_release          (GSGrab    *grab);
 gboolean  gs_grab_release_mouse    (GSGrab    *grab);
 
-gboolean  gs_grab_grab_window      (GSGrab    *grab,
-                                    GdkWindow *window,
-                                    GdkScreen *screen,
-                                    gboolean   hide_cursor);
+gboolean  gs_grab_grab_window      (GSGrab     *grab,
+                                    GdkWindow  *window,
+                                    GdkDisplay *display,
+                                    gboolean    hide_cursor);
 
 gboolean  gs_grab_grab_root        (GSGrab    *grab,
                                     gboolean   hide_cursor);
 gboolean  gs_grab_grab_offscreen   (GSGrab    *grab,
                                     gboolean   hide_cursor);
 
-void      gs_grab_move_to_window   (GSGrab    *grab,
-                                    GdkWindow *window,
-                                    GdkScreen *screen,
-                                    gboolean   hide_cursor);
+void      gs_grab_move_to_window   (GSGrab     *grab,
+                                    GdkWindow  *window,
+                                    GdkDisplay *display,
+                                    gboolean    hide_cursor);
 
 void      gs_grab_mouse_reset      (GSGrab    *grab);
 void      gs_grab_keyboard_reset   (GSGrab    *grab);
diff --git a/src/gs-job.c b/src/gs-job.c
index 009de4d..e0d4d3e 100644
--- a/src/gs-job.c
+++ b/src/gs-job.c
@@ -260,9 +260,10 @@ nice_process (int pid,
 static GPtrArray *
 get_env_vars (GtkWidget *widget)
 {
-	GPtrArray *env;
-	char      *str;
-	int        i;
+	GPtrArray   *env;
+	const gchar *display_name;
+	gchar       *str;
+	int          i;
 	static const char *allowed_env_vars [] =
 	{
 		"PATH",
@@ -276,9 +277,8 @@ get_env_vars (GtkWidget *widget)
 
 	env = g_ptr_array_new ();
 
-	str = gdk_screen_make_display_name (gtk_widget_get_screen (widget));
-	g_ptr_array_add (env, g_strdup_printf ("DISPLAY=%s", str));
-	g_free (str);
+	display_name = gdk_display_get_name (gtk_widget_get_display (widget));
+	g_ptr_array_add (env, g_strdup_printf ("DISPLAY=%s", display_name));
 
 	g_ptr_array_add (env, g_strdup_printf ("HOME=%s",
 	                                       g_get_home_dir ()));
diff --git a/src/gs-manager.c b/src/gs-manager.c
index 6795ff6..10e268e 100644
--- a/src/gs-manager.c
+++ b/src/gs-manager.c
@@ -1102,12 +1102,15 @@ static GSWindow *
 find_window_at_pointer (GSManager *manager)
 {
 	GdkDisplay *display;
-	GdkScreen  *screen;
 	GdkDevice  *device;
+#if GTK_CHECK_VERSION (3, 22, 0)
+	GdkMonitor *monitor;
+#else
+	GdkScreen  *screen;
 	int         monitor;
+#endif
 	int         x, y;
 	GSWindow   *window;
-	int         screen_num;
 	GSList     *l;
 
 	display = gdk_display_get_default ();
@@ -1117,17 +1120,21 @@ find_window_at_pointer (GSManager *manager)
 #else
 	device = gdk_device_manager_get_client_pointer (gdk_display_get_device_manager (display));
 #endif
+#if GTK_CHECK_VERSION (3, 22, 0)
+	gdk_device_get_position (device, NULL, &x, &y);
+	monitor = gdk_display_get_monitor_at_point (display, x, y);
+#else
 	gdk_device_get_position (device, &screen, &x, &y);
 	monitor = gdk_screen_get_monitor_at_point (screen, x, y);
-	screen_num = gdk_screen_get_number (screen);
+#endif
 
-	/* Find the gs-window that is on that screen */
+	/* Find the gs-window that is on that monitor */
 	window = NULL;
 	for (l = manager->priv->windows; l; l = l->next)
 	{
 		GSWindow *win = GS_WINDOW (l->data);
-		if (gs_window_get_screen (win) == screen
-		        && gs_window_get_monitor (win) == monitor)
+		if (gs_window_get_display (win) == display &&
+		    gs_window_get_monitor (win) == monitor)
 		{
 			window = win;
 		}
@@ -1135,13 +1142,15 @@ find_window_at_pointer (GSManager *manager)
 
 	if (window == NULL)
 	{
-		gs_debug ("WARNING: Could not find the GSWindow for screen %d", screen_num);
+		gs_debug ("WARNING: Could not find the GSWindow for display %s",
+		          gdk_display_get_name (display));
 		/* take the first one */
 		window = manager->priv->windows->data;
 	}
 	else
 	{
-		gs_debug ("Requesting unlock for screen %d", screen_num);
+		gs_debug ("Requesting unlock for display %s",
+		          gdk_display_get_name (display));
 	}
 
 	return window;
@@ -1169,9 +1178,13 @@ manager_maybe_grab_window (GSManager *manager,
                            GSWindow  *window)
 {
 	GdkDisplay *display;
-	GdkScreen  *screen;
 	GdkDevice  *device;
+#if GTK_CHECK_VERSION (3, 22, 0)
+	GdkMonitor *monitor;
+#else
+	GdkScreen  *screen;
 	int         monitor;
+#endif
 	int         x, y;
 	gboolean    grabbed;
 
@@ -1181,18 +1194,23 @@ manager_maybe_grab_window (GSManager *manager,
 #else
 	device = gdk_device_manager_get_client_pointer (gdk_display_get_device_manager (display));
 #endif
+#if GTK_CHECK_VERSION (3, 22, 0)
+	gdk_device_get_position (device, NULL, &x, &y);
+	monitor = gdk_display_get_monitor_at_point (display, x, y);
+#else
 	gdk_device_get_position (device, &screen, &x, &y);
 	monitor = gdk_screen_get_monitor_at_point (screen, x, y);
+#endif
 
 	gdk_flush ();
 	grabbed = FALSE;
-	if (gs_window_get_screen (window) == screen
-	        && gs_window_get_monitor (window) == monitor)
+	if (gs_window_get_display (window) == display &&
+	    gs_window_get_monitor (window) == monitor)
 	{
 		gs_debug ("Moving grab to %p", window);
 		gs_grab_move_to_window (manager->priv->grab,
 		                        gs_window_get_gdk_window (window),
-		                        gs_window_get_screen (window),
+		                        gs_window_get_display (window),
 		                        FALSE);
 		grabbed = TRUE;
 	}
@@ -1266,6 +1284,7 @@ apply_background_to_window (GSManager *manager,
                             GSWindow  *window)
 {
 	cairo_surface_t *surface;
+	GdkDisplay      *display;
 	GdkScreen       *screen;
 	int              width;
 	int              height;
@@ -1278,7 +1297,8 @@ apply_background_to_window (GSManager *manager,
 		gs_window_set_background_surface (window, NULL);
 	}
 
-	screen = gs_window_get_screen (window);
+	display = gs_window_get_display (window);
+	screen = gdk_display_get_default_screen (display);
 	width = gdk_screen_get_width (screen);
 	height = gdk_screen_get_height (screen);
 	gs_debug ("Creating background w:%d h:%d", width, height);
@@ -1397,7 +1417,7 @@ handle_window_dialog_up (GSManager *manager,
 	/* Move keyboard and mouse grabs so dialog can be used */
 	gs_grab_move_to_window (manager->priv->grab,
 	                        gs_window_get_gdk_window (window),
-	                        gs_window_get_screen (window),
+	                        gs_window_get_display (window),
 	                        FALSE);
 
 	/* Release the pointer grab while dialog is up so that
@@ -1426,7 +1446,7 @@ handle_window_dialog_down (GSManager *manager,
 	/* Regrab the mouse */
 	gs_grab_move_to_window (manager->priv->grab,
 	                        gs_window_get_gdk_window (window),
-	                        gs_window_get_screen (window),
+	                        gs_window_get_display (window),
 	                        FALSE);
 
 	/* Make all windows sensitive so we get events */
@@ -1524,19 +1544,32 @@ connect_window_signals (GSManager *manager,
 }
 
 static void
-gs_manager_create_window_for_monitor (GSManager *manager,
-                                      GdkScreen *screen,
-                                      int        monitor)
+gs_manager_create_window_for_monitor (GSManager  *manager,
+#if GTK_CHECK_VERSION (3, 22, 0)
+                                      GdkMonitor *monitor)
+#else
+                                      GdkDisplay *display,
+                                      int         monitor)
+#endif
 {
 	GSWindow    *window;
+#if GTK_CHECK_VERSION (3, 22, 0)
+	GdkDisplay  *display;
+#endif
 	GdkRectangle rect;
 
-	gdk_screen_get_monitor_geometry (screen, monitor, &rect);
+#if GTK_CHECK_VERSION (3, 22, 0)
+	display = gdk_monitor_get_display (monitor);
+	gdk_monitor_get_geometry (monitor, &rect);
+#else
+	gdk_screen_get_monitor_geometry (gdk_display_get_default_screen (display),
+	                                 monitor, &rect);
+#endif
 
-	gs_debug ("Creating window for monitor %d [%d,%d] (%dx%d)",
+	gs_debug ("Creating a window for the monitor [%d,%d] (%dx%d)",
 	          monitor, rect.x, rect.y, rect.width, rect.height);
 
-	window = gs_window_new (screen, monitor, manager->priv->lock_active);
+	window = gs_window_new (display, monitor, manager->priv->lock_active);
 
 	gs_window_set_user_switch_enabled (window, manager->priv->user_switch_enabled);
 	gs_window_set_logout_enabled (window, manager->priv->logout_enabled);
@@ -1560,16 +1593,22 @@ static void
 on_screen_monitors_changed (GdkScreen *screen,
                             GSManager *manager)
 {
-	GSList *l;
-	int     n_monitors;
-	int     n_windows;
-	int     i;
+	GSList     *l;
+	GdkDisplay *display;
+	int         n_monitors;
+	int         n_windows;
+	int         i;
 
+	display = gdk_screen_get_display (screen);
+#if GTK_CHECK_VERSION (3, 22, 0)
+	n_monitors = gdk_display_get_n_monitors (display);
+#else
 	n_monitors = gdk_screen_get_n_monitors (screen);
+#endif
 	n_windows = g_slist_length (manager->priv->windows);
 
-	gs_debug ("Monitors changed for screen %d: num=%d",
-	          gdk_screen_get_number (screen),
+	gs_debug ("Monitors changed for display %s: num=%d",
+	          gdk_display_get_name (display),
 	          n_monitors);
 
 	if (n_monitors > n_windows)
@@ -1588,7 +1627,13 @@ on_screen_monitors_changed (GdkScreen *screen,
 		/* add more windows */
 		for (i = n_windows; i < n_monitors; i++)
 		{
-			gs_manager_create_window_for_monitor (manager, screen, i);
+#if GTK_CHECK_VERSION (3, 22, 0)
+			GdkMonitor *mon = gdk_display_get_monitor (display, i);
+			gs_manager_create_window_for_monitor (manager, mon);
+#else
+			gs_manager_create_window_for_monitor (manager,
+			                                      display, i);
+#endif
 		}
 
 		/* And put unlock dialog up where ever it's supposed to be
@@ -1604,13 +1649,23 @@ on_screen_monitors_changed (GdkScreen *screen,
 		l = manager->priv->windows;
 		while (l != NULL)
 		{
-			GdkScreen *this_screen;
-			int        this_monitor;
-			GSList    *next = l->next;
+			GdkDisplay *this_display;
+#if GTK_CHECK_VERSION (3, 22, 0)
+			GdkMonitor *this_monitor;
+#else
+			int         this_monitor;
+#endif
+			GSList     *next = l->next;
 
-			this_screen = gs_window_get_screen (GS_WINDOW (l->data));
+			this_display = gs_window_get_display (GS_WINDOW (l->data));
 			this_monitor = gs_window_get_monitor (GS_WINDOW (l->data));
-			if (this_screen == screen && this_monitor >= n_monitors)
+#if GTK_CHECK_VERSION (3, 22, 0)
+			if (this_display == display &&
+			    !GDK_IS_MONITOR (this_monitor))
+#else
+			if (this_display == display &&
+			    this_monitor >= n_monitors)
+#endif
 			{
 				manager_maybe_stop_job_for_window (manager, GS_WINDOW (l->data));
 				g_hash_table_remove (manager->priv->jobs, l->data);
@@ -1704,29 +1759,43 @@ gs_manager_finalize (GObject *object)
 }
 
 static void
-gs_manager_create_windows_for_screen (GSManager *manager,
-                                      GdkScreen *screen)
+gs_manager_create_windows_for_display (GSManager  *manager,
+                                       GdkDisplay *display)
 {
-	int       n_monitors;
-	int       i;
+#if !GTK_CHECK_VERSION (3, 22, 0)
+	GdkScreen *screen;
+#endif
+	int n_monitors;
+	int i;
 
 	g_return_if_fail (manager != NULL);
 	g_return_if_fail (GS_IS_MANAGER (manager));
-	g_return_if_fail (GDK_IS_SCREEN (screen));
+	g_return_if_fail (GDK_IS_DISPLAY (display));
 
 	g_object_ref (manager);
-	g_object_ref (screen);
+	g_object_ref (display);
 
+#if GTK_CHECK_VERSION (3, 22, 0)
+	n_monitors = gdk_display_get_n_monitors (display);
+#else
+	screen = gdk_display_get_default_screen (display);
 	n_monitors = gdk_screen_get_n_monitors (screen);
+#endif
 
-	gs_debug ("Creating %d windows for screen %d", n_monitors, gdk_screen_get_number (screen));
+	gs_debug ("Creating %d windows for display %s",
+	          n_monitors, gdk_display_get_name (display));
 
 	for (i = 0; i < n_monitors; i++)
 	{
-		gs_manager_create_window_for_monitor (manager, screen, i);
+#if GTK_CHECK_VERSION (3, 22, 0)
+		GdkMonitor *mon = gdk_display_get_monitor (display, i);
+		gs_manager_create_window_for_monitor (manager, mon);
+#else
+		gs_manager_create_window_for_monitor (manager, display, i);
+#endif
 	}
 
-	g_object_unref (screen);
+	g_object_unref (display);
 	g_object_unref (manager);
 }
 
@@ -1746,8 +1815,7 @@ gs_manager_create_windows (GSManager *manager)
 	                  G_CALLBACK (on_screen_monitors_changed),
 	                  manager);
 
-	gs_manager_create_windows_for_screen (manager,
-	                                      gdk_display_get_default_screen (display));
+	gs_manager_create_windows_for_display (manager, display);
 }
 
 GSManager *
diff --git a/src/gs-visual-gl.c b/src/gs-visual-gl.c
index 7dfe165..80bf8bb 100644
--- a/src/gs-visual-gl.c
+++ b/src/gs-visual-gl.c
@@ -38,13 +38,14 @@
 #include "gs-debug.h"
 
 GdkVisual *
-gs_visual_gl_get_best_for_screen (GdkScreen *screen)
+gs_visual_gl_get_best_for_display (GdkDisplay *display)
 {
-	GdkVisual  *visual;
+	GdkVisual *visual;
 #ifdef HAVE_LIBGL
-	GdkDisplay *display;
-	int         screen_num;
-	int         i;
+	Display   *xdisplay;
+	GdkScreen *screen;
+	int        screen_num;
+	int        i;
 
 # define R GLX_RED_SIZE
 # define G GLX_GREEN_SIZE
@@ -72,10 +73,11 @@ gs_visual_gl_get_best_for_screen (GdkScreen *screen)
 		{ GLX_RGBA, R, 1, G, 1, B, 1, D, 1,           0 }  /* monochrome */
 	};
 
-	g_return_val_if_fail (screen != NULL, NULL);
+	g_return_val_if_fail (display != NULL, NULL);
 
-	display = gdk_screen_get_display (screen);
-	screen_num = gdk_screen_get_number (screen);
+	xdisplay = GDK_DISPLAY_XDISPLAY (display);
+	screen = gdk_display_get_default_screen (display);
+	screen_num = GDK_SCREEN_XNUMBER (screen);
 
 	gdk_error_trap_push ();
 
@@ -84,7 +86,7 @@ gs_visual_gl_get_best_for_screen (GdkScreen *screen)
 	{
 		XVisualInfo *vi;
 
-		vi = glXChooseVisual (GDK_DISPLAY_XDISPLAY (display), screen_num, attrs [i]);
+		vi = glXChooseVisual (xdisplay, screen_num, attrs [i]);
 
 		if (vi != NULL)
 		{
diff --git a/src/gs-visual-gl.h b/src/gs-visual-gl.h
index 09cbdd9..4b1493a 100644
--- a/src/gs-visual-gl.h
+++ b/src/gs-visual-gl.h
@@ -25,7 +25,7 @@
 
 G_BEGIN_DECLS
 
-GdkVisual   *gs_visual_gl_get_best_for_screen      (GdkScreen *screen);
+GdkVisual   *gs_visual_gl_get_best_for_display (GdkDisplay *display);
 
 G_END_DECLS
 
diff --git a/src/gs-window-x11.c b/src/gs-window-x11.c
index 4054e74..f87ccf9 100644
--- a/src/gs-window-x11.c
+++ b/src/gs-window-x11.c
@@ -62,7 +62,11 @@ enum
 
 struct GSWindowPrivate
 {
+#if GTK_CHECK_VERSION (3, 22, 0)
+	GdkMonitor *monitor;
+#else
 	int        monitor;
+#endif
 
 	GdkRectangle geometry;
 	guint      obscured : 1;
@@ -298,23 +302,48 @@ gs_window_clear (GSWindow *window)
 static cairo_region_t *
 get_outside_region (GSWindow *window)
 {
-	int        i;
+	GdkDisplay *display;
+#if GTK_CHECK_VERSION (3, 22, 0)
+	int         i;
+#else
+	GdkScreen  *screen;
+	int         mon;
+#endif
 	cairo_region_t *region;
 
+	display = gtk_widget_get_display (GTK_WIDGET (window));
+#if !GTK_CHECK_VERSION (3, 22, 0)
+	screen = gdk_display_get_default_screen (display);
+#endif
+
 	region = cairo_region_create ();
 
-	for (i = 0; i < window->priv->monitor; i++)
+#if GTK_CHECK_VERSION (3, 22, 0)
+	for (i = 0; i < gdk_display_get_n_monitors (display); i++)
+#else
+	for (mon = 0; mon < gdk_screen_get_n_monitors (screen); mon++)
+#endif
 	{
-		GdkRectangle geometry;
-		cairo_rectangle_int_t rectangle;
+#if GTK_CHECK_VERSION (3, 22, 0)
+		GdkMonitor *mon = gdk_display_get_monitor (display, i);
+#endif
+		if (mon != window->priv->monitor)
+		{
+			GdkRectangle geometry;
+			cairo_rectangle_int_t rectangle;
 
-		gdk_screen_get_monitor_geometry (gtk_widget_get_screen (GTK_WIDGET (window)),
-		                                 i, &geometry);
-		rectangle.x = geometry.x;
-		rectangle.y = geometry.y;
-		rectangle.width = geometry.width;
-		rectangle.height = geometry.height;
-		cairo_region_union_rectangle (region, &rectangle);
+#if GTK_CHECK_VERSION (3, 22, 0)
+			gdk_monitor_get_geometry (mon, &geometry);
+#else
+			gdk_screen_get_monitor_geometry (screen, mon,
+			                                 &geometry);
+#endif
+			rectangle.x = geometry.x;
+			rectangle.y = geometry.y;
+			rectangle.width = geometry.width;
+			rectangle.height = geometry.height;
+			cairo_region_union_rectangle (region, &rectangle);
+		}
 	}
 
 	return region;
@@ -329,11 +358,14 @@ update_geometry (GSWindow *window)
 
 	outside_region = get_outside_region (window);
 
+#if GTK_CHECK_VERSION (3, 22, 0)
+	gdk_monitor_get_geometry (window->priv->monitor, &geometry);
+#else
 	gdk_screen_get_monitor_geometry (gtk_widget_get_screen (GTK_WIDGET (window)),
 	                                 window->priv->monitor,
 	                                 &geometry);
-	gs_debug ("got geometry for monitor %d: x=%d y=%d w=%d h=%d",
-	          window->priv->monitor,
+#endif
+	gs_debug ("got geometry for monitor: x=%d y=%d w=%d h=%d",
 	          geometry.x,
 	          geometry.y,
 	          geometry.width,
@@ -345,8 +377,7 @@ update_geometry (GSWindow *window)
 	cairo_region_get_extents (monitor_region, (cairo_rectangle_int_t *)&geometry);
 	cairo_region_destroy (monitor_region);
 
-	gs_debug ("using geometry for monitor %d: x=%d y=%d w=%d h=%d",
-	          window->priv->monitor,
+	gs_debug ("using geometry for monitor: x=%d y=%d w=%d h=%d",
 	          geometry.x,
 	          geometry.y,
 	          geometry.width,
@@ -426,15 +457,15 @@ gs_window_real_unrealize (GtkWidget *widget)
 extern char **environ;
 
 static gchar **
-spawn_make_environment_for_screen (GdkScreen  *screen,
-                                   gchar     **envp)
+spawn_make_environment_for_display (GdkDisplay *display,
+                                    gchar     **envp)
 {
 	gchar **retval = NULL;
-	gchar  *display_name;
+	const gchar *display_name;
 	gint    display_index = -1;
 	gint    i, env_len;
 
-	g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
+	g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
 
 	if (envp == NULL)
 		envp = environ;
@@ -446,7 +477,7 @@ spawn_make_environment_for_screen (GdkScreen  *screen,
 	retval = g_new (char *, env_len + 1);
 	retval[env_len] = NULL;
 
-	display_name = gdk_screen_make_display_name (screen);
+	display_name = gdk_display_get_name (display);
 
 	for (i = 0; i < env_len; i++)
 		if (i == display_index)
@@ -456,18 +487,16 @@ spawn_make_environment_for_screen (GdkScreen  *screen,
 
 	g_assert (i == env_len);
 
-	g_free (display_name);
-
 	return retval;
 }
 
 static gboolean
-spawn_command_line_on_screen_sync (GdkScreen    *screen,
-                                   const gchar  *command_line,
-                                   char        **standard_output,
-                                   char        **standard_error,
-                                   int          *exit_status,
-                                   GError      **error)
+spawn_command_line_on_display_sync (GdkDisplay  *display,
+                                    const gchar  *command_line,
+                                    char        **standard_output,
+                                    char        **standard_error,
+                                    int          *exit_status,
+                                    GError      **error)
 {
 	char     **argv = NULL;
 	char     **envp = NULL;
@@ -480,7 +509,7 @@ spawn_command_line_on_screen_sync (GdkScreen    *screen,
 		return FALSE;
 	}
 
-	envp = spawn_make_environment_for_screen (screen, NULL);
+	envp = spawn_make_environment_for_display (display, NULL);
 
 	retval = g_spawn_sync (NULL,
 	                       argv,
@@ -500,8 +529,9 @@ spawn_command_line_on_screen_sync (GdkScreen    *screen,
 }
 
 static GdkVisual *
-get_best_visual_for_screen (GdkScreen *screen)
+get_best_visual_for_display (GdkDisplay *display)
 {
+	GdkScreen    *screen;
 	char         *command;
 	char         *std_output;
 	int           exit_status;
@@ -512,12 +542,13 @@ get_best_visual_for_screen (GdkScreen *screen)
 	gboolean      res;
 
 	visual = NULL;
+	screen = gdk_display_get_default_screen (display);
 
 	command = g_build_filename (LIBEXECDIR, "mate-screensaver-gl-helper", NULL);
 
 	error = NULL;
 	std_output = NULL;
-	res = spawn_command_line_on_screen_sync (screen,
+	res = spawn_command_line_on_display_sync (display,
 	        command,
 	        &std_output,
 	        NULL,
@@ -539,8 +570,8 @@ get_best_visual_for_screen (GdkScreen *screen)
 			visual_id = (VisualID) v;
 			visual = gdk_x11_screen_lookup_visual (screen, visual_id);
 
-			gs_debug ("Found best GL visual for screen %d: 0x%x",
-			          gdk_screen_get_number (screen),
+			gs_debug ("Found best GL visual for display %s: 0x%x",
+			          gdk_display_get_name (display),
 			          (unsigned int) visual_id);
 		}
 	}
@@ -558,7 +589,7 @@ widget_set_best_visual (GtkWidget *widget)
 
 	g_return_if_fail (widget != NULL);
 
-	visual = get_best_visual_for_screen (gtk_widget_get_screen (widget));
+	visual = get_best_visual_for_display (gtk_widget_get_display (widget));
 	if (visual != NULL)
 	{
 		gtk_widget_set_visual (widget, visual);
@@ -1063,7 +1094,7 @@ spawn_on_window (GSWindow *window,
 	}
 
 	error = NULL;
-	envp = spawn_make_environment_for_screen (gtk_window_get_screen (GTK_WINDOW (window)), NULL);
+	envp = spawn_make_environment_for_display (gtk_widget_get_display (GTK_WIDGET (window)), NULL);
 	result = g_spawn_async_with_pipes (NULL,
 	                                   argv,
 	                                   envp,
@@ -1810,23 +1841,12 @@ gs_window_set_lock_enabled (GSWindow *window,
 	g_object_notify (G_OBJECT (window), "lock-enabled");
 }
 
-void
-gs_window_set_screen (GSWindow  *window,
-                      GdkScreen *screen)
-{
-
-	g_return_if_fail (GS_IS_WINDOW (window));
-	g_return_if_fail (GDK_IS_SCREEN (screen));
-
-	gtk_window_set_screen (GTK_WINDOW (window), screen);
-}
-
-GdkScreen *
-gs_window_get_screen (GSWindow  *window)
+GdkDisplay *
+gs_window_get_display (GSWindow  *window)
 {
 	g_return_val_if_fail (GS_IS_WINDOW (window), NULL);
 
-	return gtk_widget_get_screen (GTK_WIDGET (window));
+	return gtk_widget_get_display (GTK_WIDGET (window));
 }
 
 void
@@ -1919,8 +1939,12 @@ gs_window_set_status_message (GSWindow   *window,
 }
 
 void
-gs_window_set_monitor (GSWindow *window,
-                       int       monitor)
+gs_window_set_monitor (GSWindow   *window,
+#if GTK_CHECK_VERSION (3, 22, 0)
+                       GdkMonitor *monitor)
+#else
+                       int         monitor)
+#endif
 {
 	g_return_if_fail (GS_IS_WINDOW (window));
 
@@ -1936,10 +1960,18 @@ gs_window_set_monitor (GSWindow *window,
 	g_object_notify (G_OBJECT (window), "monitor");
 }
 
+#if GTK_CHECK_VERSION (3, 22, 0)
+GdkMonitor *
+#else
 int
+#endif
 gs_window_get_monitor (GSWindow *window)
 {
+#if GTK_CHECK_VERSION (3, 22, 0)
+	g_return_val_if_fail (GS_IS_WINDOW (window), NULL);
+#else
 	g_return_val_if_fail (GS_IS_WINDOW (window), -1);
+#endif
 
 	return window->priv->monitor;
 }
@@ -1978,7 +2010,11 @@ gs_window_set_property (GObject            *object,
 		gs_window_set_logout_timeout (self, g_value_get_long (value));
 		break;
 	case PROP_MONITOR:
+#if GTK_CHECK_VERSION (3, 22, 0)
+		gs_window_set_monitor (self, g_value_get_pointer (value));
+#else
 		gs_window_set_monitor (self, g_value_get_int (value));
+#endif
 		break;
 	default:
 		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -2020,7 +2056,11 @@ gs_window_get_property (GObject    *object,
 		g_value_set_long (value, self->priv->logout_timeout);
 		break;
 	case PROP_MONITOR:
+#if GTK_CHECK_VERSION (3, 22, 0)
+		g_value_set_pointer (value, (gpointer) self->priv->monitor);
+#else
 		g_value_set_int (value, self->priv->monitor);
+#endif
 		break;
 	case PROP_OBSCURED:
 		g_value_set_boolean (value, self->priv->obscured);
@@ -2107,15 +2147,17 @@ static gboolean
 gs_window_real_motion_notify_event (GtkWidget      *widget,
                                     GdkEventMotion *event)
 {
-	GSWindow  *window;
-	gdouble    distance;
-	gdouble    min_distance;
-	gdouble    min_percentage = 0.1;
-	GdkScreen *screen;
+	GSWindow   *window;
+	gdouble     distance;
+	gdouble     min_distance;
+	gdouble     min_percentage = 0.1;
+	GdkDisplay *display;
+	GdkScreen  *screen;
 
 	window = GS_WINDOW (widget);
 
-	screen = gs_window_get_screen (window);
+	display = gs_window_get_display (window);
+	screen = gdk_display_get_default_screen (display);
 	min_distance = gdk_screen_get_width (screen) * min_percentage;
 
 	/* if the last position was not set then don't detect motion */
@@ -2419,13 +2461,20 @@ gs_window_class_init (GSWindowClass *klass)
 
 	g_object_class_install_property (object_class,
 	                                 PROP_MONITOR,
+#if GTK_CHECK_VERSION (3, 22, 0)
+	                                 g_param_spec_pointer ("monitor",
+	                                         "Gdk monitor",
+	                                         "The monitor (in terms of Gdk) which the window is on",
+	                                         G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+#else
 	                                 g_param_spec_int ("monitor",
-	                                         "Xinerama monitor",
-	                                         "The monitor (in terms of Xinerama) which the window is on",
+	                                         "RandR monitor",
+	                                         "The monitor (in terms of RandR) which the window is on",
 	                                         0,
 	                                         G_MAXINT,
 	                                         0,
 	                                         G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+#endif
 
 }
 
@@ -2558,11 +2607,16 @@ gs_window_finalize (GObject *object)
 }
 
 GSWindow *
-gs_window_new (GdkScreen *screen,
-               int        monitor,
+gs_window_new (GdkDisplay *display,
+#if GTK_CHECK_VERSION (3, 22, 0)
+               GdkMonitor *monitor,
+#else
+               int         monitor,
+#endif
                gboolean   lock_enabled)
 {
-	GObject     *result;
+	GObject   *result;
+	GdkScreen *screen = gdk_display_get_default_screen (display);
 
 	result = g_object_new (GS_TYPE_WINDOW,
 	                       "type", GTK_WINDOW_POPUP,
diff --git a/src/gs-window.h b/src/gs-window.h
index 9cd64eb..7878a94 100644
--- a/src/gs-window.h
+++ b/src/gs-window.h
@@ -59,12 +59,16 @@ GType       gs_window_get_type           (void);
 gboolean    gs_window_is_obscured        (GSWindow  *window);
 gboolean    gs_window_is_dialog_up       (GSWindow  *window);
 
-void        gs_window_set_screen         (GSWindow  *window,
-        GdkScreen *screen);
-GdkScreen * gs_window_get_screen         (GSWindow  *window);
-void        gs_window_set_monitor        (GSWindow  *window,
-        int        monitor);
+GdkDisplay * gs_window_get_display       (GSWindow  *window);
+#if GTK_CHECK_VERSION (3, 22, 0)
+void        gs_window_set_monitor        (GSWindow   *window,
+                                          GdkMonitor *monitor);
+GdkMonitor * gs_window_get_monitor        (GSWindow  *window);
+#else
+void        gs_window_set_monitor        (GSWindow   *window,
+                                          int         monitor);
 int         gs_window_get_monitor        (GSWindow  *window);
+#endif
 
 void        gs_window_set_background_surface (GSWindow *window,
         cairo_surface_t *surface);
@@ -92,9 +96,13 @@ void        gs_window_show_message         (GSWindow   *window,
 void        gs_window_request_unlock     (GSWindow  *window);
 void        gs_window_cancel_unlock_request (GSWindow  *window);
 
-GSWindow  * gs_window_new                (GdkScreen *screen,
-        int        monitor,
-        gboolean   lock_enabled);
+GSWindow  * gs_window_new                (GdkDisplay *display,
+#if GTK_CHECK_VERSION (3, 22, 0)
+                                          GdkMonitor *monitor,
+#else
+                                          int         monitor,
+#endif
+                                          gboolean   lock_enabled);
 void        gs_window_show               (GSWindow  *window);
 void        gs_window_destroy            (GSWindow  *window);
 GdkWindow * gs_window_get_gdk_window     (GSWindow  *window);
diff --git a/src/mate-screensaver-gl-helper.c b/src/mate-screensaver-gl-helper.c
index acf23ef..472aefd 100644
--- a/src/mate-screensaver-gl-helper.c
+++ b/src/mate-screensaver-gl-helper.c
@@ -35,7 +35,6 @@ main (int    argc,
       char **argv)
 {
 	GdkDisplay     *display;
-	GdkScreen      *screen;
 	GdkVisual      *visual;
 	Visual         *xvisual;
 	GError         *error = NULL;
@@ -64,8 +63,7 @@ main (int    argc,
 	}
 
 	display = gdk_display_get_default ();
-	screen = gdk_display_get_default_screen (display);
-	visual = gs_visual_gl_get_best_for_screen (screen);
+	visual = gs_visual_gl_get_best_for_display (display);
 
 	if (visual != NULL)
 	{
diff --git a/src/mate-screensaver-preferences.c b/src/mate-screensaver-preferences.c
index 7fd498c..ad38b36 100644
--- a/src/mate-screensaver-preferences.c
+++ b/src/mate-screensaver-preferences.c
@@ -1270,15 +1270,15 @@ setup_for_root_user (void)
 extern char **environ;
 
 static gchar **
-spawn_make_environment_for_screen (GdkScreen  *screen,
-                                   gchar     **envp)
+spawn_make_environment_for_display (GdkDisplay *display,
+                                    gchar     **envp)
 {
 	gchar **retval = NULL;
-	gchar  *display_name;
+	const gchar *display_name;
 	gint    display_index = -1;
 	gint    i, env_len;
 
-	g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
+	g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
 
 	if (envp == NULL)
 		envp = environ;
@@ -1290,7 +1290,7 @@ spawn_make_environment_for_screen (GdkScreen  *screen,
 	retval = g_new (char *, env_len + 1);
 	retval[env_len] = NULL;
 
-	display_name = gdk_screen_make_display_name (screen);
+	display_name = gdk_display_get_name (display);
 
 	for (i = 0; i < env_len; i++)
 		if (i == display_index)
@@ -1300,18 +1300,16 @@ spawn_make_environment_for_screen (GdkScreen  *screen,
 
 	g_assert (i == env_len);
 
-	g_free (display_name);
-
 	return retval;
 }
 
 static gboolean
-spawn_command_line_on_screen_sync (GdkScreen    *screen,
-                                   const gchar  *command_line,
-                                   char        **standard_output,
-                                   char        **standard_error,
-                                   int          *exit_status,
-                                   GError      **error)
+spawn_command_line_on_display_sync (GdkDisplay  *display,
+                                    const gchar  *command_line,
+                                    char        **standard_output,
+                                    char        **standard_error,
+                                    int          *exit_status,
+                                    GError      **error)
 {
 	char     **argv = NULL;
 	char     **envp = NULL;
@@ -1324,7 +1322,7 @@ spawn_command_line_on_screen_sync (GdkScreen    *screen,
 		return FALSE;
 	}
 
-	envp = spawn_make_environment_for_screen (screen, NULL);
+	envp = spawn_make_environment_for_display (display, NULL);
 
 	retval = g_spawn_sync (NULL,
 	                       argv,
@@ -1345,8 +1343,9 @@ spawn_command_line_on_screen_sync (GdkScreen    *screen,
 
 
 static GdkVisual *
-get_best_visual_for_screen (GdkScreen *screen)
+get_best_visual_for_display (GdkDisplay *display)
 {
+	GdkScreen    *screen;
 	char         *command;
 	char         *std_output;
 	int           exit_status;
@@ -1357,12 +1356,13 @@ get_best_visual_for_screen (GdkScreen *screen)
 	gboolean      res;
 
 	visual = NULL;
+	screen = gdk_display_get_default_screen (display);
 
 	command = g_build_filename (LIBEXECDIR, "mate-screensaver-gl-helper", NULL);
 
 	error = NULL;
 	std_output = NULL;
-	res = spawn_command_line_on_screen_sync (screen,
+	res = spawn_command_line_on_display_sync (display,
 	        command,
 	        &std_output,
 	        NULL,
@@ -1384,8 +1384,8 @@ get_best_visual_for_screen (GdkScreen *screen)
 			visual_id = (VisualID) v;
 			visual = gdk_x11_screen_lookup_visual (screen, visual_id);
 
-			gs_debug ("Found best GL visual for screen %d: 0x%x",
-			          gdk_screen_get_number (screen),
+			gs_debug ("Found best GL visual for display %s: 0x%x",
+			          gdk_display_get_name (display),
 			          (unsigned int) visual_id);
 		}
 	}
@@ -1404,7 +1404,7 @@ widget_set_best_visual (GtkWidget *widget)
 
 	g_return_if_fail (widget != NULL);
 
-	visual = get_best_visual_for_screen (gtk_widget_get_screen (widget));
+	visual = get_best_visual_for_display (gtk_widget_get_display (widget));
 	if (visual != NULL)
 	{
 		gtk_widget_set_visual (widget, visual);
diff --git a/src/test-window.c b/src/test-window.c
index 05883a7..f07c5c7 100644
--- a/src/test-window.c
+++ b/src/test-window.c
@@ -60,7 +60,7 @@ window_show_cb (GSWindow  *window,
 	/* Grab keyboard so dialog can be used */
 	gs_grab_move_to_window (grab,
 	                        gs_window_get_gdk_window (window),
-	                        gs_window_get_screen (window),
+	                        gs_window_get_display (window),
 	                        FALSE);
 
 }
@@ -120,18 +120,28 @@ connect_window_signals (GSWindow *window)
 static void
 test_window (void)
 {
-	GSWindow  *window;
-	gboolean   lock_active;
-	gboolean   user_switch_enabled;
-	GdkScreen *screen;
-	int        monitor;
+	GSWindow   *window;
+	gboolean    lock_active;
+	gboolean    user_switch_enabled;
+	GdkDisplay *display;
+#if GTK_CHECK_VERSION (3, 22, 0)
+	GdkMonitor *monitor;
+#else
+	GdkScreen  *screen;
+	int         monitor;
+#endif
 
 	lock_active = TRUE;
 	user_switch_enabled = TRUE;
-	screen = gdk_screen_get_default ();
-	monitor = 0;
+	display = gdk_display_get_default ();
+#if GTK_CHECK_VERSION (3, 22, 0)
+	monitor = gdk_display_get_primary_monitor (display);
+#else
+	screen = gdk_display_get_default_screen (display);
+	monitor = gdk_screen_get_primary_monitor (screen);
+#endif
 
-	window = gs_window_new (screen, monitor, lock_active);
+	window = gs_window_new (display, monitor, lock_active);
 
 	gs_window_set_user_switch_enabled (window, user_switch_enabled);