[gtk+] gtkwindow: claim the press sequence when clicking on the titlebar

[Carlos Garnacho <carlosg src gnome org>]

commit 52a90758f961d39fe92c12546136849991b28ddd
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Nov 7 12:55:52 2014 +0100

    gtkwindow: claim the press sequence when clicking on the titlebar
    
    This event might not have an action yet, but certainly accounts, and
    should be triggering recognition.
    
    This fixes a crash when attempting to drag CSD windows through touch. As
    since cfaec2d2f542, gtk_gesture_single_get_current_sequence() would
    rightfully return NULL if the gesture didn't enter recognition, making
    event lookup fail.

 gtk/gtkwindow.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 8c07e21..d57b3a4 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -1473,6 +1473,9 @@ multipress_gesture_pressed_cb (GtkGestureMultiPress *gesture,
         gtk_window_titlebar_action (window, event, button, n_press);
       if (n_press == 1)
         priv->drag_possible = TRUE;
+
+      gtk_gesture_set_sequence_state (GTK_GESTURE (gesture),
+                                      sequence, GTK_EVENT_SEQUENCE_CLAIMED);
       break;
     default:
       if (!priv->maximized)