[gnome-panel] libpanel-applet: avoid deprecated GdkDeviceManager

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 2f5b18565045e80fb7ff9ddb35c849c393d760c8
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Wed Mar 9 18:02:32 2016 +0200

    libpanel-applet: avoid deprecated GdkDeviceManager

 libpanel-applet/panel-applet.c |   18 +++++++++++-------
 1 files changed, 11 insertions(+), 7 deletions(-)
---
diff --git a/libpanel-applet/panel-applet.c b/libpanel-applet/panel-applet.c
index fe350c4..11269e9 100644
--- a/libpanel-applet/panel-applet.c
+++ b/libpanel-applet/panel-applet.c
@@ -915,7 +915,10 @@ panel_applet_position_menu (GtkMenu   *menu,
        PanelApplet    *applet;
        GtkAllocation   allocation;
        GtkRequisition  requisition;
+       GdkDisplay     *display;
+       GdkSeat        *seat;
        GdkDevice      *device;
+       GdkWindow      *window;
        GdkScreen      *screen;
        int             menu_x = 0;
        int             menu_y = 0;
@@ -926,16 +929,17 @@ panel_applet_position_menu (GtkMenu   *menu,
 
        applet = PANEL_APPLET (widget);
 
+       display = gtk_widget_get_display (widget);
+       seat = gdk_display_get_default_seat (display);
+       device = gdk_seat_get_pointer (seat);
        screen = gtk_widget_get_screen (widget);
-       
-       gtk_menu_set_screen(menu, screen);
+       window = gtk_widget_get_window (widget);
 
-       gtk_widget_get_preferred_size (GTK_WIDGET (menu), &requisition, NULL);
-       gdk_window_get_origin (gtk_widget_get_window (widget),
-                              &menu_x, &menu_y);
-       device = gdk_device_manager_get_client_pointer (gdk_display_get_device_manager 
(gtk_widget_get_display (widget)));
-       gdk_window_get_device_position(gtk_widget_get_window (widget), device, &pointer_x, &pointer_y, NULL);
+       gtk_menu_set_screen (menu, screen);
 
+       gtk_widget_get_preferred_size (GTK_WIDGET (menu), &requisition, NULL);
+       gdk_window_get_origin (window, &menu_x, &menu_y);
+       gdk_window_get_device_position (window, device, &pointer_x, &pointer_y, NULL);
        gtk_widget_get_allocation (widget, &allocation);
 
        menu_x += allocation.x;