[gtk+] wayland: fix testtooltips

[Olivier Fourdan <ofourdan src gnome org>]

commit 7fc493a8a89ae2b7df0f2deee90be122bf11fa09
Author: Olivier Fourdan <ofourdan redhat com>
Date:   Fri Dec 4 11:25:50 2015 +0100

    wayland: fix testtooltips
    
    On Wayland, for tooltips to work as expected, the type hint must be set
    to tooltips, otherwise the popup window won't be translated as a
    subsurface.
    
    Fix the test do work as expected under Wayland.
    
    Bugzilla: https://bugzilla.gnome.org/show_bug.cgi?id=759018

 tests/testtooltips.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/tests/testtooltips.c b/tests/testtooltips.c
index 4e1552d..853239e 100644
--- a/tests/testtooltips.c
+++ b/tests/testtooltips.c
@@ -341,6 +341,11 @@ main (int argc, char *argv[])
   gtk_widget_show (tooltip_button);
 
   gtk_widget_set_tooltip_window (button, GTK_WINDOW (tooltip_window));
+  gtk_window_set_type_hint (GTK_WINDOW (tooltip_window),
+                            GDK_WINDOW_TYPE_HINT_TOOLTIP);
+  gtk_window_set_transient_for (GTK_WINDOW (tooltip_window),
+                                GTK_WINDOW (window));
+
   g_signal_connect (button, "query-tooltip",
                    G_CALLBACK (query_tooltip_custom_cb), NULL);
   g_object_set (button, "has-tooltip", TRUE, NULL);