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[animation] add varargs support for signal::completed

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Added support for registering a handler for the completed signal
directly amongst the varargs making it easier to attach code
to be executed when animations complete.
This commit is contained in:
Øyvind Kolås 2009-03-30 12:10:41 +01:00
parent a1a8193179
commit f6d938a0db
1 changed files with 51 additions and 21 deletions
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72
clutter/clutter-animation.c
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@ -1421,31 +1421,41 @@ clutter_animation_setup_valist (ClutterAnimation *animation,
GValue final = { 0, };
gchar *error = NULL;
if (g_str_has_prefix (property_name, "fixed::"))
property_name += 7; /* strlen("fixed::") */
pspec = g_object_class_find_property (klass, property_name);
if (!pspec)
if (G_UNLIKELY (g_str_equal (property_name, "signal::completed")))
{
g_warning ("Cannot bind property '%s': objects of type '%s' do "
"not have this property",
property_name,
g_type_name (G_OBJECT_TYPE (priv->object)));
break;
}
GCallback callback = va_arg (var_args, GCallback);
gpointer userdata = va_arg (var_args, gpointer);
g_value_init (&final, G_PARAM_SPEC_VALUE_TYPE (pspec));
G_VALUE_COLLECT (&final, var_args, 0, &error);
if (error)
g_signal_connect (animation, "completed", callback, userdata);
}
else
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
break;
}
if (g_str_has_prefix (property_name, "fixed::"))
property_name += 7; /* strlen("fixed::") */
clutter_animation_setup_property (animation, property_name,
&final,
pspec);
pspec = g_object_class_find_property (klass, property_name);
if (!pspec)
{
g_warning ("Cannot bind property '%s': objects of type '%s' do "
"not have this property",
property_name,
g_type_name (G_OBJECT_TYPE (priv->object)));
break;
}
g_value_init (&final, G_PARAM_SPEC_VALUE_TYPE (pspec));
G_VALUE_COLLECT (&final, var_args, 0, &error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
break;
}
clutter_animation_setup_property (animation, property_name,
&final,
pspec);
}
property_name = va_arg (var_args, gchar*);
}
@ -1627,6 +1637,26 @@ clutter_actor_animate_with_timeline (ClutterActor *actor,
* to control the animation or to know when the animation has been
* completed.
*
* 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:
*
* |[
*
* static void
* on_animation_completed (ClutterAnimation *animation,
* ClutterActor *actor)
* {
* clutter_actor_hide (actor);
* }
*
* clutter_actor_animate (actor, CLUTTER_EASE_IN, 100,
* "opacity", 0,
* "signal::completed", on_animation_completed, actor,
* NULL);
* ]|
*
*
* Calling this function on an actor that is already being animated
* will cause the current animation to change with the new final values,
* the new easing mode and the new duration - that is, this code: