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actor: Simple show/hide optimizations

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Showing a visible (and hiding an invisible) actor is far less cheap than
it should be.

http://bugzilla.clutter-project.org/show_bug.cgi?id=2422
This commit is contained in:
Emmanuele Bassi 2010-11-15 16:30:12 +00:00
parent 66e7a38a3d
commit a731682ac3
1 changed files with 45 additions and 20 deletions
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65
clutter/clutter-actor.c
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@ -1170,6 +1170,25 @@ clutter_actor_real_show (ClutterActor *self)
}
}
static inline void
set_show_on_set_parent (ClutterActor *self,
gboolean set_show)
{
ClutterActorPrivate *priv = self->priv;
set_show = !!set_show;
if (priv->show_on_set_parent == set_show)
return;
if (priv->parent_actor == NULL)
{
priv->show_on_set_parent = set_show;
_clutter_notify_by_pspec (G_OBJECT (self),
obj_props[PROP_SHOW_ON_SET_PARENT]);
}
}
/**
* clutter_actor_show:
* @self: A #ClutterActor
@ -1190,6 +1209,16 @@ clutter_actor_show (ClutterActor *self)
g_return_if_fail (CLUTTER_IS_ACTOR (self));
/* simple optimization */
if (CLUTTER_ACTOR_IS_VISIBLE (self))
{
/* we still need to set the :show-on-set-parent property, in
* case show() is called on an unparented actor
*/
set_show_on_set_parent (self, TRUE);
return;
}
#ifdef CLUTTER_ENABLE_DEBUG
clutter_actor_verify_map_state (self);
#endif
@ -1198,17 +1227,10 @@ clutter_actor_show (ClutterActor *self)
g_object_freeze_notify (G_OBJECT (self));
if (!priv->show_on_set_parent && !priv->parent_actor)
{
priv->show_on_set_parent = TRUE;
_clutter_notify_by_pspec (G_OBJECT (self), obj_props[PROP_SHOW_ON_SET_PARENT]);
}
set_show_on_set_parent (self, TRUE);
if (!CLUTTER_ACTOR_IS_VISIBLE (self))
{
g_signal_emit (self, actor_signals[SHOW], 0);
_clutter_notify_by_pspec (G_OBJECT (self), obj_props[PROP_VISIBLE]);
}
g_signal_emit (self, actor_signals[SHOW], 0);
_clutter_notify_by_pspec (G_OBJECT (self), obj_props[PROP_VISIBLE]);
if (priv->parent_actor)
clutter_actor_queue_redraw (priv->parent_actor);
@ -1280,6 +1302,16 @@ clutter_actor_hide (ClutterActor *self)
g_return_if_fail (CLUTTER_IS_ACTOR (self));
/* simple optimization */
if (!CLUTTER_ACTOR_IS_VISIBLE (self))
{
/* we still need to set the :show-on-set-parent property, in
* case hide() is called on an unparented actor
*/
set_show_on_set_parent (self, FALSE);
return;
}
#ifdef CLUTTER_ENABLE_DEBUG
clutter_actor_verify_map_state (self);
#endif
@ -1288,17 +1320,10 @@ clutter_actor_hide (ClutterActor *self)
g_object_freeze_notify (G_OBJECT (self));
if (priv->show_on_set_parent && !priv->parent_actor)
{
priv->show_on_set_parent = FALSE;
_clutter_notify_by_pspec (G_OBJECT (self), obj_props[PROP_SHOW_ON_SET_PARENT]);
}
set_show_on_set_parent (self, FALSE);
if (CLUTTER_ACTOR_IS_VISIBLE (self))
{
g_signal_emit (self, actor_signals[HIDE], 0);
_clutter_notify_by_pspec (G_OBJECT (self), obj_props[PROP_VISIBLE]);
}
g_signal_emit (self, actor_signals[HIDE], 0);
_clutter_notify_by_pspec (G_OBJECT (self), obj_props[PROP_VISIBLE]);
if (priv->parent_actor)
clutter_actor_queue_redraw (priv->parent_actor);