gesture: Handle GdkEventGrabBroken

That may happen separately from grab-notify, and also due to external
reasons, so ensure all sequences are cancelled if a grab is taken
in some GdkWindows that would obscure events on the controller.

1 files changed, 5 insertions, 0 deletions

diff --git a/gtk/gtkgesturesingle.c b/gtk/gtkgesturesingle.c
index 3e8b9c3ec6..8d8f1188bd 100644
--- a/gtk/gtkgesturesingle.c
+++ b/gtk/gtkgesturesingle.c
@@ -166,6 +166,11 @@ gtk_gesture_single_handle_event (GtkEventController *controller,
         }
 
       break;
+    case GDK_TOUCH_CANCEL:
+    case GDK_GRAB_BROKEN:
+      return GTK_EVENT_CONTROLLER_CLASS (gtk_gesture_single_parent_class)->handle_event (controller,
+                                                                                         event);
+      break;
     default:
       return FALSE;
     }