[metacity] metacity-window-demo: avoid deprecation warnings

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 421e1ebb2fd9781ffd7d0da2691d84bd8f96648d
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Wed Oct 26 01:21:24 2016 +0300

    metacity-window-demo: avoid deprecation warnings

 src/tools/metacity-window-demo.c |   17 ++++++++++++++---
 1 files changed, 14 insertions(+), 3 deletions(-)
---
diff --git a/src/tools/metacity-window-demo.c b/src/tools/metacity-window-demo.c
index 888de80..a5f8ef5 100644
--- a/src/tools/metacity-window-demo.c
+++ b/src/tools/metacity-window-demo.c
@@ -560,6 +560,8 @@ make_dock (int type)
   GtkWidget *image;
   GtkWidget *box;
   GtkWidget *button;
+  GdkScreen *screen;
+  GdkWindow *root;
 
   g_return_if_fail (type != DOCK_ALL);
 
@@ -594,6 +596,9 @@ make_dock (int type)
 
   gtk_container_add (GTK_CONTAINER (window), box);
 
+  screen = gdk_screen_get_default ();
+  root = gdk_screen_get_root_window (screen);
+
 #define DOCK_SIZE 48
   switch (type)
     {
@@ -605,7 +610,7 @@ make_dock (int type)
       break;
     case DOCK_RIGHT:
       gtk_widget_set_size_request (window, DOCK_SIZE, 400);
-      gtk_window_move (GTK_WINDOW (window), gdk_screen_width () - DOCK_SIZE, 200);
+      gtk_window_move (GTK_WINDOW (window), gdk_window_get_width (root) - DOCK_SIZE, 200);
       set_gtk_window_struts (window, 0, DOCK_SIZE, 0, 0);
       gtk_window_set_title (GTK_WINDOW (window), "RightDock");
       break;
@@ -617,7 +622,7 @@ make_dock (int type)
       break;
     case DOCK_BOTTOM:
       gtk_widget_set_size_request (window, 600, DOCK_SIZE);
-      gtk_window_move (GTK_WINDOW (window), 200, gdk_screen_height () - DOCK_SIZE);
+      gtk_window_move (GTK_WINDOW (window), 200, gdk_window_get_height (root) - DOCK_SIZE);
       set_gtk_window_struts (window, 0, 0, 0, DOCK_SIZE);
       gtk_window_set_title (GTK_WINDOW (window), "BottomDock");
       break;
@@ -689,15 +694,21 @@ desktop_cb (GSimpleAction *action,
             GVariant      *parameter,
             gpointer       callback_data)
 {
+  GdkScreen *screen;
+  GdkWindow *root;
   GtkWidget *window;
   GtkWidget *label;
   GdkRGBA    desktop_color;
 
+  screen = gdk_screen_get_default ();
+  root = gdk_screen_get_root_window (screen);
+
   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
   set_gtk_window_type (GTK_WINDOW (window), "_NET_WM_WINDOW_TYPE_DESKTOP");
   gtk_window_set_title (GTK_WINDOW (window), "Desktop");
   gtk_widget_set_size_request (window,
-                               gdk_screen_width (), gdk_screen_height ());
+                               gdk_window_get_width (root),
+                               gdk_window_get_height (root));
   gtk_window_move (GTK_WINDOW (window), 0, 0);
 
   desktop_color.red = 0.32;