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clutter: Add parameter to control the event emission root

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Grabs will alter the topmost actor from where it makes sense to emit
events, add infrastructure so we can tell which actor is that when
emitting a ClutterEvent.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2068>
This commit is contained in:
Carlos Garnacho 2021-10-26 16:21:41 +02:00 committed by Marge Bot
parent bbc95c1688
commit a60658f15e
3 changed files with 21 additions and 2 deletions
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1
clutter/clutter/clutter-actor-private.h
View File

@ -246,6 +246,7 @@ void _clutter_actor_pop_clone_paint
ClutterActorAlign _clutter_actor_get_effective_x_align (ClutterActor *self);
void _clutter_actor_handle_event (ClutterActor *actor,
ClutterActor *root,
const ClutterEvent *event);
void _clutter_actor_attach_clone (ClutterActor *actor,

20
clutter/clutter/clutter-actor.c
View File

@ -18992,11 +18992,12 @@ clutter_actor_get_content_repeat (ClutterActor *self)
void
_clutter_actor_handle_event (ClutterActor *self,
ClutterActor *root,
const ClutterEvent *event)
{
GPtrArray *event_tree;
ClutterActor *iter;
gboolean is_key_event;
gboolean is_key_event, in_root = FALSE;
gint i = 0;
/* XXX - for historical reasons that are now lost in the mists of time,
@ -19025,9 +19026,26 @@ _clutter_actor_handle_event (ClutterActor *self,
g_ptr_array_add (event_tree, g_object_ref (iter));
}
if (iter == root)
{
in_root = TRUE;
break;
}
iter = parent;
}
/* The grab root conceptually extends infinitely in all
* directions, so it handles the events that fall outside of
* the actor.
*/
if (root && !in_root)
{
if (!clutter_actor_event (root, event, TRUE))
clutter_actor_event (root, event, FALSE);
goto done;
}
/* Capture: from top-level downwards */
for (i = event_tree->len - 1; i >= 0; i--)
if (clutter_actor_event (g_ptr_array_index (event_tree, i), event, TRUE))

2
clutter/clutter/clutter-main.c
View File

@ -683,7 +683,7 @@ emit_event_chain (ClutterEvent *event)
return;
}
_clutter_actor_handle_event (event->any.source, event);
_clutter_actor_handle_event (event->any.source, NULL, event);
}
/*