clutter: Add "revoked" property to ClutterGrab

Users of Clutter grabs may listen for notify::revoked changes in
order to know that their grab is no longer in charge of event
propagation, without the use of crossing events.

Since a ClutterGrab may stay in the stack and regain effects,
this notification also happens the other way around.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3420>
This commit is contained in:
Carlos Garnacho 2023-11-17 21:38:51 +01:00 committed by Robert Mader
parent b154fddd0f
commit 9c5bd9f847
4 changed files with 65 additions and 0 deletions

View File

@ -42,4 +42,6 @@ ClutterGrab * clutter_grab_new (ClutterStage *stage,
ClutterActor *actor,
gboolean owns_actor);
void clutter_grab_notify (ClutterGrab *grab);
G_END_DECLS

View File

@ -23,6 +23,17 @@
#include "clutter-grab-private.h"
#include "clutter-private.h"
enum
{
PROP_0,
PROP_REVOKED,
N_PROPS,
};
static GParamSpec *props[N_PROPS] = { 0, };
G_DEFINE_FINAL_TYPE (ClutterGrab, clutter_grab, G_TYPE_OBJECT)
static void
@ -43,6 +54,25 @@ clutter_grab_finalize (GObject *object)
G_OBJECT_CLASS (clutter_grab_parent_class)->finalize (object);
}
static void
clutter_grab_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterGrab *grab = CLUTTER_GRAB (object);
switch (prop_id)
{
case PROP_REVOKED:
g_value_set_boolean (value, clutter_grab_is_revoked (grab));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
clutter_grab_class_init (ClutterGrabClass *klass)
{
@ -50,6 +80,16 @@ clutter_grab_class_init (ClutterGrabClass *klass)
object_class->dispose = clutter_grab_dispose;
object_class->finalize = clutter_grab_finalize;
object_class->get_property = clutter_grab_get_property;
props[PROP_REVOKED] =
g_param_spec_boolean ("revoked", NULL, NULL,
FALSE,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS |
G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, N_PROPS, props);
}
static void
@ -73,3 +113,17 @@ clutter_grab_new (ClutterStage *stage,
return grab;
}
void
clutter_grab_notify (ClutterGrab *grab)
{
g_object_notify (G_OBJECT (grab), "revoked");
}
gboolean
clutter_grab_is_revoked (ClutterGrab *grab)
{
g_return_val_if_fail (CLUTTER_IS_GRAB (grab), FALSE);
return grab->prev != NULL;
}

View File

@ -41,3 +41,6 @@ void clutter_grab_dismiss (ClutterGrab *grab);
CLUTTER_EXPORT
ClutterGrabState clutter_grab_get_seat_state (ClutterGrab *grab);
CLUTTER_EXPORT
gboolean clutter_grab_is_revoked (ClutterGrab *grab);

View File

@ -3930,6 +3930,9 @@ clutter_stage_grab_full (ClutterStage *stage,
if (was_grabbed != !!priv->topmost_grab)
g_object_notify_by_pspec (G_OBJECT (stage), obj_props[PROP_IS_GRABBED]);
if (grab->next)
clutter_grab_notify (grab->next);
return grab;
}
@ -4035,6 +4038,9 @@ clutter_stage_unlink_grab (ClutterStage *stage,
if (grab->owns_actor)
g_clear_pointer (&grab->actor, clutter_actor_destroy);
if (priv->topmost_grab)
clutter_grab_notify (priv->topmost_grab);
}
/**