[gnome-panel] applet: avoid deprecated GdkScreen API

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 6ca3a3de0b9b9ec006f3f9199bd91593c5d8fe3e
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Thu Sep 13 16:22:07 2018 +0300

    applet: avoid deprecated GdkScreen API

 gnome-panel/applet.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/gnome-panel/applet.c b/gnome-panel/applet.c
index 1803774c8..302cecb54 100644
--- a/gnome-panel/applet.c
+++ b/gnome-panel/applet.c
@@ -504,20 +504,20 @@ panel_applet_position_menu (GtkMenu   *menu,
        GtkRequisition  requisition;
        GdkSeat        *seat;
        GdkDevice      *device;
-       GdkScreen      *screen;
+       GdkDisplay     *display;
        GtkWidget      *parent;
        int             menu_x = 0;
        int             menu_y = 0;
        int             pointer_x;
        int             pointer_y;
-       int             monitor_num;
+       GdkMonitor     *monitor;
        GdkRectangle    monitor_rect;
 
        parent = gtk_widget_get_parent (applet);
 
        g_return_if_fail (PANEL_IS_WIDGET (parent));
 
-       screen = gtk_widget_get_screen (applet);
+       display = gtk_widget_get_display (applet);
 
        gtk_widget_get_preferred_size (GTK_WIDGET (menu), &requisition, NULL);
        gdk_window_get_origin (gtk_widget_get_window (applet), &menu_x, &menu_y);
@@ -534,8 +534,8 @@ panel_applet_position_menu (GtkMenu   *menu,
                menu_y += allocation.y;
        }
 
-       monitor_num = gdk_screen_get_monitor_at_point (screen,menu_x,menu_y);
-       gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor_rect);
+       monitor = gdk_display_get_monitor_at_point (display, menu_x, menu_y);
+       gdk_monitor_get_geometry (monitor, &monitor_rect);
 
        if (PANEL_WIDGET (parent)->orient == GTK_ORIENTATION_HORIZONTAL) {
                if (gtk_widget_get_direction (GTK_WIDGET (menu)) != GTK_TEXT_DIR_RTL) {