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[animation] Add the ::started signal

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The Animation class is missing a ::started signal matching the
::completed one. A ::started signal is useful for debugging,
initial state set up, and checks.
This commit is contained in:
Emmanuele Bassi 2009-04-03 14:19:20 +01:00
parent 1762795990
commit 6bf883da6c
2 changed files with 60 additions and 3 deletions
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61
clutter/clutter-animation.c
View File

@ -71,6 +71,7 @@ enum
enum
{
STARTED,
COMPLETED,
LAST_SIGNAL
@ -88,7 +89,9 @@ struct _ClutterAnimationPrivate
guint loop : 1;
guint duration;
ClutterTimeline *timeline;
guint timeline_started_id;
guint timeline_completed_id;
ClutterAlpha *alpha;
@ -132,6 +135,13 @@ clutter_animation_dispose (GObject *gobject)
if (priv->timeline)
{
if (priv->timeline_started_id)
{
g_signal_handler_disconnect (priv->timeline,
priv->timeline_started_id);
priv->timeline_started_id = 0;
}
if (priv->timeline_completed_id)
{
g_signal_handler_disconnect (priv->timeline,
@ -341,6 +351,24 @@ clutter_animation_class_init (ClutterAnimationClass *klass)
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_ALPHA, pspec);
/**
* ClutterAnimation::started:
* @animation: the animation that emitted the signal
*
* The ::started signal is emitted once the animation has been
* started
*
* Since: 1.0
*/
animation_signals[STARTED] =
g_signal_new (I_("started"),
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterAnimationClass, started),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* ClutterAniamtion::completed:
* @animation: the animation that emitted the signal
@ -709,6 +737,13 @@ clutter_animation_get_interval (ClutterAnimation *animation,
return g_hash_table_lookup (priv->properties, property_name);
}
static void
on_timeline_started (ClutterTimeline *timeline,
ClutterAnimation *animation)
{
g_signal_emit (animation, animation_signals[STARTED], 0);
}
static void
on_timeline_completed (ClutterTimeline *timeline,
ClutterAnimation *animation)
@ -1089,11 +1124,16 @@ clutter_animation_set_timeline (ClutterAnimation *animation,
if (priv->timeline)
{
if (priv->timeline_started_id)
g_signal_handler_disconnect (priv->timeline,
priv->timeline_started_id);
if (priv->timeline_completed_id)
g_signal_handler_disconnect (priv->timeline,
priv->timeline_completed_id);
g_object_unref (priv->timeline);
priv->timeline_started_id = 0;
priv->timeline_completed_id = 0;
priv->timeline = 0;
}
@ -1115,6 +1155,10 @@ clutter_animation_set_timeline (ClutterAnimation *animation,
priv->timeline = g_object_ref (timeline);
g_object_notify (G_OBJECT (animation), "timeline");
priv->timeline_started_id =
g_signal_connect (timeline, "started",
G_CALLBACK (on_timeline_started),
animation);
priv->timeline_completed_id =
g_signal_connect (timeline, "completed",
G_CALLBACK (on_timeline_completed),
@ -1425,12 +1469,13 @@ clutter_animation_setup_valist (ClutterAnimation *animation,
GValue final = { 0, };
gchar *error = NULL;
if (G_UNLIKELY (g_str_equal (property_name, "signal::completed")))
if (g_str_has_prefix (property_name, "signal::"))
{
const gchar *signal_name = property_name + 8;
GCallback callback = va_arg (var_args, GCallback);
gpointer userdata = va_arg (var_args, gpointer);
g_signal_connect (animation, "completed", callback, userdata);
g_signal_connect (animation, signal_name, callback, userdata);
}
else
{
@ -1647,7 +1692,8 @@ clutter_actor_animate_with_timeline (ClutterActor *actor,
*
* If a name argument starts with "signal::" the two following arguments
* are used as callback function and userdata for a signal handler installed
* on the #ClutterAnimation object, for instance:
* on the #ClutterAnimation object for the specified signal name, for
* instance:
*
* |[
*
@ -1808,6 +1854,9 @@ clutter_actor_animate (ClutterActor *actor,
* This is the vector-based variant of clutter_actor_animate(), useful
* for language bindings.
*
* <warning>Unlike clutter_actor_animate(), this function will not
* allow you to specify "signal::" names and callbacks.</warning>
*
* Return value: (transfer none): a #ClutterAnimation object. The object is
* owned by the #ClutterActor and should not be unreferenced with
* g_object_unref()
@ -1881,6 +1930,9 @@ clutter_actor_animatev (ClutterActor *actor,
* This is the vector-based variant of clutter_actor_animate_with_timeline(),
* useful for language bindings.
*
* <warning>Unlike clutter_actor_animate_with_timeline(), this function
* will not allow you to specify "signal::" names and callbacks.</warning>
*
* Return value: (transfer none): a #ClutterAnimation object. The object is
* owned by the #ClutterActor and should not be unreferenced with
* g_object_unref()
@ -1943,6 +1995,9 @@ clutter_actor_animate_with_timelinev (ClutterActor *actor,
* This is the vector-based variant of clutter_actor_animate_with_alpha(),
* useful for language bindings.
*
* <warning>Unlike clutter_actor_animate_with_alpha(), this function will
* not allow you to specify "signal::" names and callbacks.</warning>
*
* Return value: (transfer none): a #ClutterAnimation object. The object is owned by the
* #ClutterActor and should not be unreferenced with g_object_unref()
*

2
clutter/clutter-animation.h
View File

@ -66,6 +66,7 @@ struct _ClutterAnimation
/**
* ClutterAnimationClass:
* @started: class handler for the #ClutterAnimation::started signal
* @completed: class handler for the #ClutterAnimation::completed signal
*
* The #ClutterAnimationClass structure contains only private data and
@ -79,6 +80,7 @@ struct _ClutterAnimationClass
GInitiallyUnownedClass parent_class;
/*< public >*/
void (* started) (ClutterAnimation *animation);
void (* completed) (ClutterAnimation *animation);
/*< private >*/