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actor: Minor optimization to avoid get_preferred_*

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When the easing state has a duration of zero milliseconds we can skip
the entire create_transition() call inside set_width() and set_height(),
to avoid what may be a costly call to get_preferred_*.
This commit is contained in:
Emmanuele Bassi 2012-03-28 18:07:06 +01:00
parent cede56dcdd
commit ff9a503c14
1 changed files with 34 additions and 2 deletions
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36
clutter/clutter-actor.c
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@ -9473,7 +9473,25 @@ clutter_actor_set_width (ClutterActor *self,
if (_clutter_actor_get_transition (self, obj_props[PROP_WIDTH]) == NULL)
{
float cur_size = clutter_actor_get_width (self);
float cur_size;
/* minor optimization: if we don't have a duration
* then we can skip the get_width() below, to avoid
* the chance of going through get_preferred_width()
* just to jump to a new desired width.
*/
if (clutter_actor_get_easing_duration (self) == 0)
{
g_object_freeze_notify (G_OBJECT (self));
clutter_actor_set_width_internal (self, width);
g_object_thaw_notify (G_OBJECT (self));
return;
}
else
cur_size = clutter_actor_get_width (self);
_clutter_actor_create_transition (self,
obj_props[PROP_WIDTH],
@ -9509,7 +9527,21 @@ clutter_actor_set_height (ClutterActor *self,
if (_clutter_actor_get_transition (self, obj_props[PROP_HEIGHT]) == NULL)
{
float cur_size = clutter_actor_get_height (self);
float cur_size;
/* see the comment in clutter_actor_set_width() above */
if (clutter_actor_get_easing_duration (self) == 0)
{
g_object_freeze_notify (G_OBJECT (self));
clutter_actor_set_height_internal (self, height);
g_object_thaw_notify (G_OBJECT (self));
return;
}
else
cur_size = clutter_actor_get_height (self);
_clutter_actor_create_transition (self,
obj_props[PROP_HEIGHT],