From: Robert Carr <racarr@canonical.com>
Date: Tue, 29 Nov 2011 23:25:29 +0000 (+0100)
Subject: Do not allow devices in an offscreen hierarchy to take grabs.
X-Git-Tag: archive/raspbian/3.24.39-1+rpi1~1^2~4
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=6b6b2482b96fa3e7de2fbc8e56fbefd964dd398b;p=gtk%2B3.0.git

Do not allow devices in an offscreen hierarchy to take grabs.

Bug: https://bugzilla.gnome.org/show_bug.cgi?id=658563
Bug: https://gitlab.gnome.org/GNOME/gtk/issues/368
Bug-Ubuntu: https://launchpad.net/bugs/804009
Forwarded: yes

Gbp-Pq: Name 017_no_offscreen_device_grabbing.patch
---

diff --git a/gtk/gtkmain.c b/gtk/gtkmain.c
index 6148489378..7cd685cbad 100644
--- a/gtk/gtkmain.c
+++ b/gtk/gtkmain.c
@@ -2327,9 +2327,14 @@ gtk_device_grab_add (GtkWidget *widget,
 {
   GtkWindowGroup *group;
   GtkWidget *old_grab_widget;
+  GdkWindow *toplevel;
 
   g_return_if_fail (GTK_IS_WIDGET (widget));
   g_return_if_fail (GDK_IS_DEVICE (device));
+  
+  toplevel = gdk_window_get_toplevel (gtk_widget_get_window (widget));
+  if (toplevel && gdk_window_get_window_type (toplevel) == GDK_WINDOW_OFFSCREEN)
+    return;
 
   group = gtk_main_get_window_group (widget);
   old_grab_widget = gtk_window_group_get_current_device_grab (group, device);