ui: gtk: Fix some deprecation warnings

All device manager APIs are deprecated now. Much of our usage is
just to get the current pointer, so centralize that logic and use
the new seat APIs
Signed-off-by: NCole Robinson <crobinso@redhat.com>
Message-id: d6dec24220a4e1449a0172119c10c48e145c0f6f.1462557436.git.crobinso@redhat.com
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

ui/gtk.c

@@ -476,12 +476,21 @@ static void gd_refresh(DisplayChangeListener *dcl)
 }
 
 #if GTK_CHECK_VERSION(3, 0, 0)
+static GdkDevice *gd_get_pointer(GdkDisplay *dpy)
+{
+#if GTK_CHECK_VERSION(3, 20, 0)
+    return gdk_seat_get_pointer(gdk_display_get_default_seat(dpy));
+#else
+    return gdk_device_manager_get_client_pointer(
+        gdk_display_get_device_manager(dpy));
+#endif
+}
+
 static void gd_mouse_set(DisplayChangeListener *dcl,
                          int x, int y, int visible)
 {
     VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
     GdkDisplay *dpy;
-    GdkDeviceManager *mgr;
     gint x_root, y_root;
 
     if (qemu_input_is_absolute()) {
@@ -489,10 +498,9 @@ static void gd_mouse_set(DisplayChangeListener *dcl,
     }
 
     dpy = gtk_widget_get_display(vc->gfx.drawing_area);
-    mgr = gdk_display_get_device_manager(dpy);
     gdk_window_get_root_coords(gtk_widget_get_window(vc->gfx.drawing_area),
                                x, y, &x_root, &y_root);
-    gdk_device_warp(gdk_device_manager_get_client_pointer(mgr),
+    gdk_device_warp(gd_get_pointer(dpy),
                     gtk_widget_get_screen(vc->gfx.drawing_area),
                     x_root, y_root);
     vc->s->last_x = x;
@@ -1402,7 +1410,6 @@ static void gd_grab_pointer(VirtualConsole *vc, const char *reason)
     }
 
 #if GTK_CHECK_VERSION(3, 0, 0)
-    GdkDeviceManager *mgr = gdk_display_get_device_manager(display);
     gd_grab_devices(vc, true, GDK_SOURCE_MOUSE,
                     GDK_POINTER_MOTION_MASK |
                     GDK_BUTTON_PRESS_MASK |
@@ -1410,7 +1417,7 @@ static void gd_grab_pointer(VirtualConsole *vc, const char *reason)
                     GDK_BUTTON_MOTION_MASK |
                     GDK_SCROLL_MASK,
                     vc->s->null_cursor);
-    gdk_device_get_position(gdk_device_manager_get_client_pointer(mgr),
+    gdk_device_get_position(gd_get_pointer(display),
                             NULL, &vc->s->grab_x_root, &vc->s->grab_y_root);
 #else
     gdk_pointer_grab(gtk_widget_get_window(vc->gfx.drawing_area),
@@ -1442,9 +1449,8 @@ static void gd_ungrab_pointer(GtkDisplayState *s)
 
     GdkDisplay *display = gtk_widget_get_display(vc->gfx.drawing_area);
 #if GTK_CHECK_VERSION(3, 0, 0)
-    GdkDeviceManager *mgr = gdk_display_get_device_manager(display);
     gd_grab_devices(vc, false, GDK_SOURCE_MOUSE, 0, NULL);
-    gdk_device_warp(gdk_device_manager_get_client_pointer(mgr),
+    gdk_device_warp(gd_get_pointer(display),
                     gtk_widget_get_screen(vc->gfx.drawing_area),
                     vc->s->grab_x_root, vc->s->grab_y_root);
 #else