[mutter/wip/carlosg/grabs-pt2: 91/95] clutter: Cancel ClutterGestureActions on leave+grab_notify events




commit 83ff4752bc69a770da2e79d74de90ad487699f1e
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Oct 29 12:52:52 2021 +0200

    clutter: Cancel ClutterGestureActions on leave+grab_notify events
    
    The lack of handling of regular crossing events here is dubious, perhaps
    to be fixed later on. So far, ensure gestures are cancelled whenever
    a grab-inducted crossing event would leave this action in the blue.

 clutter/clutter/clutter-gesture-action.c | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/clutter/clutter/clutter-gesture-action.c b/clutter/clutter/clutter-gesture-action.c
index a4f2de792f..5ff9754953 100644
--- a/clutter/clutter/clutter-gesture-action.c
+++ b/clutter/clutter/clutter-gesture-action.c
@@ -380,6 +380,15 @@ clutter_gesture_action_handle_event (ClutterAction      *action,
         return CLUTTER_EVENT_PROPAGATE;
     }
 
+  if (priv->in_gesture && point &&
+      event_type == CLUTTER_LEAVE &&
+      (event->crossing.flags & CLUTTER_EVENT_FLAG_GRAB_NOTIFY) != 0)
+    {
+      priv->in_gesture = FALSE;
+      cancel_gesture (gesture_action);
+      return CLUTTER_EVENT_PROPAGATE;
+    }
+
   switch (clutter_event_type (event))
     {
     case CLUTTER_BUTTON_PRESS:


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