From b3de22440623434b095d3f2b76a8f0739d46b1b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Fri, 8 Apr 2022 20:37:59 +0200
Subject: [PATCH] clutter/stage: Allow claiming sequence outside of event
 handling context

Another baby step just like the last commit: This commit takes care of
the opposite case: An action handling a sequence event stops further
emission of events to actors.

Since sequences remain around for longer than the context of just a
single event, it makes sense to provide a way to "claim" those sequences
even when outside of event handling context, so introduce API for that.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2342>
---
 clutter/clutter/clutter-stage-private.h |  4 +++
 clutter/clutter/clutter-stage.c         | 33 +++++++++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/clutter/clutter/clutter-stage-private.h b/clutter/clutter/clutter-stage-private.h
index c49caf8fb..df0e7872e 100644
--- a/clutter/clutter/clutter-stage-private.h
+++ b/clutter/clutter/clutter-stage-private.h
@@ -178,6 +178,10 @@ void clutter_stage_maybe_lost_implicit_grab (ClutterStage         *self,
 void clutter_stage_implicit_grab_actor_unmapped (ClutterStage *self,
                                                  ClutterActor *actor);
 
+void clutter_stage_notify_action_implicit_grab (ClutterStage         *self,
+                                                ClutterInputDevice   *device,
+                                                ClutterEventSequence *sequence);
+
 G_END_DECLS
 
 #endif /* __CLUTTER_STAGE_PRIVATE_H__ */
diff --git a/clutter/clutter/clutter-stage.c b/clutter/clutter/clutter-stage.c
index e9538f82b..7b15b1c77 100644
--- a/clutter/clutter/clutter-stage.c
+++ b/clutter/clutter/clutter-stage.c
@@ -4263,6 +4263,21 @@ free_event_receiver (EventReceiver *receiver)
   g_clear_object (&receiver->action);
 }
 
+static void
+remove_all_actors_from_chain (PointerDeviceEntry *entry)
+{
+  unsigned int i;
+
+  for (i = 0; i < entry->event_emission_chain->len; i++)
+    {
+      EventReceiver *receiver =
+        &g_array_index (entry->event_emission_chain, EventReceiver, i);
+
+      if (receiver->actor)
+        g_clear_object (&receiver->actor);
+    }
+}
+
 static void
 remove_all_actions_from_chain (PointerDeviceEntry *entry)
 {
@@ -4528,3 +4543,21 @@ clutter_stage_implicit_grab_actor_unmapped (ClutterStage *self,
         cancel_implicit_grab_on_actor (entry, actor);
     }
 }
+
+void
+clutter_stage_notify_action_implicit_grab (ClutterStage         *self,
+                                           ClutterInputDevice   *device,
+                                           ClutterEventSequence *sequence)
+{
+  ClutterStagePrivate *priv = self->priv;
+  PointerDeviceEntry *entry;
+
+  if (sequence != NULL)
+    entry = g_hash_table_lookup (priv->touch_sequences, sequence);
+  else
+    entry = g_hash_table_lookup (priv->pointer_devices, device);
+
+  g_assert (entry->press_count > 0);
+
+  remove_all_actors_from_chain (entry);
+}