[mutter] clutter/click-action: Handle touch cancel events

[Carlos Garnacho <carlosg src gnome org>]

commit 9e0e35d2a7862a8c2152b0d37645fad6b6bffdac
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Fri May 3 12:21:30 2019 +0200

    clutter/click-action: Handle touch cancel events
    
    It's important to cancel click actions when we get a touch cancel event,
    otherwise the long press event might get emitted after the compositor
    took over the touches because it detected a gesture.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/396

 clutter/clutter/clutter-click-action.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/clutter/clutter/clutter-click-action.c b/clutter/clutter/clutter-click-action.c
index f7b73cc15..5b4c99f72 100644
--- a/clutter/clutter/clutter-click-action.c
+++ b/clutter/clutter/clutter-click-action.c
@@ -355,6 +355,10 @@ on_captured_event (ClutterActor       *stage,
 
   switch (clutter_event_type (event))
     {
+    case CLUTTER_TOUCH_CANCEL:
+      clutter_click_action_release (action);
+      break;
+
     case CLUTTER_TOUCH_END:
       has_button = FALSE;
     case CLUTTER_BUTTON_RELEASE: