[gnome-shell] swipeTracker: Use AFTER trigger edge for TouchSwipeGesture

[Marge Bot <marge-bot src gnome org>]

commit 1134afd12afc83f7746a2f6ec82604e924de5fdd
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Thu Jan 7 16:00:52 2021 -0300

    swipeTracker: Use AFTER trigger edge for TouchSwipeGesture
    
    Otherwise, we can get stray 'begin' signals from the touch gesture.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1562>

 js/ui/swipeTracker.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/js/ui/swipeTracker.js b/js/ui/swipeTracker.js
index fd13fd7252..eb1960f61d 100644
--- a/js/ui/swipeTracker.js
+++ b/js/ui/swipeTracker.js
@@ -412,7 +412,7 @@ var SwipeTracker = GObject.registerClass({
         this.bind_property('orientation', this._touchpadGesture, 'orientation', 0);
 
         this._touchGesture = new TouchSwipeGesture(allowedModes, 4,
-            Clutter.GestureTriggerEdge.NONE);
+            Clutter.GestureTriggerEdge.AFTER);
         this._touchGesture.connect('begin', this._beginTouchSwipe.bind(this));
         this._touchGesture.connect('update', this._updateGesture.bind(this));
         this._touchGesture.connect('end', this._endGesture.bind(this));