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content: Turn attached and detached into signals

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The attached and detached virtual functions are now informative, and not
normative - which means it's a good idea to provide them as signals.
This commit is contained in:
Emmanuele Bassi 2012-02-04 12:58:40 +00:00
parent 2f0d29ad75
commit fa77274e80
1 changed files with 52 additions and 2 deletions
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54
clutter/clutter-content.c
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@ -48,8 +48,18 @@
typedef struct _ClutterContentIface ClutterContentInterface;
enum
{
ATTACHED,
DETACHED,
LAST_SIGNAL
};
static GQuark quark_content_actors = 0;
static guint content_signals[LAST_SIGNAL] = { 0, };
G_DEFINE_INTERFACE (ClutterContent, clutter_content, G_TYPE_OBJECT)
static gboolean
@ -100,6 +110,46 @@ clutter_content_default_init (ClutterContentInterface *iface)
iface->attached = clutter_content_real_attached;
iface->detached = clutter_content_real_detached;
iface->invalidate = clutter_content_real_invalidate;
/**
* ClutterContent::attached:
* @content: the object that emitted the signal
* @actor: a #ClutterActor
*
* This signal is emitted each time a #ClutterContent implementation is
* assigned to a #ClutterActor.
*
* Since: 1.10
*/
content_signals[ATTACHED] =
g_signal_new (I_("attached"),
G_TYPE_FROM_INTERFACE (iface),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (ClutterContentIface, attached),
NULL, NULL,
_clutter_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
CLUTTER_TYPE_ACTOR);
/**
* ClutterContent::detached:
* @content: the object that emitted the signal
* @actor: a #ClutterActor
*
* This signal is emitted each time a #ClutterContent implementation is
* removed from a #ClutterActor.
*
* Since: 1.10
*/
content_signals[DETACHED] =
g_signal_new (I_("detached"),
G_TYPE_FROM_INTERFACE (iface),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (ClutterContentIface, detached),
NULL, NULL,
_clutter_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
CLUTTER_TYPE_ACTOR);
}
/**
@ -172,7 +222,7 @@ _clutter_content_attached (ClutterContent *content,
g_hash_table_insert (actors, actor, actor);
CLUTTER_CONTENT_GET_IFACE (content)->attached (content, actor);
g_signal_emit (content, content_signals[ATTACHED], 0, actor);
}
/*< private >
@ -203,7 +253,7 @@ _clutter_content_detached (ClutterContent *content,
if (g_hash_table_size (actors) == 0)
g_object_set_qdata (obj, quark_content_actors, NULL);
CLUTTER_CONTENT_GET_IFACE (content)->detached (content, actor);
g_signal_emit (content, content_signals[DETACHED], 0, actor);
}
/*< private >