mirror of
https://github.com/brl/mutter.git
synced 2024-11-13 01:36:10 -05:00
Add a cache of size requests
clutter_actor_get_preferred_width/height currently caches only one size requests, for a given height / width. It's common for a layout manager to call get_preferred_width with 2 different heights during the same allocation cycle. Typically once in the size request, once in the allocation. If clutter_actor_get_preferred_width is called alternatively with 2 different for_height, the cache is totally inefficient, and we end up always querying the actor size even when the actor does not need a re-allocation. http://bugzilla.openedhand.com/show_bug.cgi?id=1876 Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
This commit is contained in:
parent
18860eb16f
commit
c9b7efec96
@ -234,6 +234,18 @@ struct _AnchorCoord
|
||||
} v;
|
||||
};
|
||||
|
||||
/* 3 entries should be a good compromise, few layout managers
|
||||
* will ask for 3 different preferred size in each allocation cycle */
|
||||
#define N_CACHED_SIZE_REQUESTS 3
|
||||
typedef struct _SizeRequest SizeRequest;
|
||||
struct _SizeRequest
|
||||
{
|
||||
guint age;
|
||||
gfloat for_size;
|
||||
gfloat min_size;
|
||||
gfloat natural_size;
|
||||
};
|
||||
|
||||
/* Internal enum used to control mapped state update. This is a hint
|
||||
* which indicates when to do something other than just enforce
|
||||
* invariants.
|
||||
@ -262,14 +274,17 @@ struct _ClutterActorPrivate
|
||||
/* request mode */
|
||||
ClutterRequestMode request_mode;
|
||||
|
||||
/* our cached request width is for this height */
|
||||
gfloat request_width_for_height;
|
||||
gfloat request_min_width;
|
||||
gfloat request_natural_width;
|
||||
/* our cached size requests for different width / height */
|
||||
SizeRequest width_requests[N_CACHED_SIZE_REQUESTS];
|
||||
SizeRequest height_requests[N_CACHED_SIZE_REQUESTS];
|
||||
|
||||
/* our cached request height is for this width */
|
||||
gfloat request_height_for_width;
|
||||
/* An age of 0 means the entry is not set */
|
||||
guint cached_height_age;
|
||||
guint cached_width_age;
|
||||
|
||||
gfloat request_min_width;
|
||||
gfloat request_min_height;
|
||||
gfloat request_natural_width;
|
||||
gfloat request_natural_height;
|
||||
|
||||
ClutterActorBox allocation;
|
||||
@ -1663,6 +1678,12 @@ clutter_actor_real_queue_relayout (ClutterActor *self)
|
||||
priv->needs_height_request = TRUE;
|
||||
priv->needs_allocation = TRUE;
|
||||
|
||||
/* reset the cached size requests */
|
||||
memset (priv->width_requests, 0,
|
||||
N_CACHED_SIZE_REQUESTS * sizeof (SizeRequest));
|
||||
memset (priv->height_requests, 0,
|
||||
N_CACHED_SIZE_REQUESTS * sizeof (SizeRequest));
|
||||
|
||||
/* always repaint also (no-op if not mapped) */
|
||||
clutter_actor_queue_redraw (self);
|
||||
|
||||
@ -4392,6 +4413,9 @@ clutter_actor_init (ClutterActor *self)
|
||||
priv->needs_height_request = TRUE;
|
||||
priv->needs_allocation = TRUE;
|
||||
|
||||
priv->cached_width_age = 1;
|
||||
priv->cached_height_age = 1;
|
||||
|
||||
priv->opacity_parent = NULL;
|
||||
priv->enable_model_view_transform = TRUE;
|
||||
|
||||
@ -4586,6 +4610,40 @@ clutter_actor_get_preferred_size (ClutterActor *self,
|
||||
*natural_height_p = natural_height;
|
||||
}
|
||||
|
||||
/* looks for a cached size request for this for_size. If not
|
||||
* found, returns the oldest entry so it can be overwritten */
|
||||
static gboolean
|
||||
_clutter_actor_get_cached_size_request (gfloat for_size,
|
||||
SizeRequest *cached_size_requests,
|
||||
SizeRequest **result)
|
||||
{
|
||||
gboolean found_free_cache;
|
||||
guint i;
|
||||
|
||||
found_free_cache = FALSE;
|
||||
*result = &cached_size_requests[0];
|
||||
|
||||
for (i = 0; i < N_CACHED_SIZE_REQUESTS; i++)
|
||||
{
|
||||
SizeRequest *sr;
|
||||
|
||||
sr = &cached_size_requests[i];
|
||||
|
||||
if (sr->age > 0 &&
|
||||
sr->for_size == for_size)
|
||||
{
|
||||
*result = sr;
|
||||
return TRUE;
|
||||
}
|
||||
else if (sr->age < (*result)->age)
|
||||
{
|
||||
*result = sr;
|
||||
}
|
||||
}
|
||||
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/**
|
||||
* clutter_actor_get_preferred_width:
|
||||
* @self: A #ClutterActor
|
||||
@ -4616,14 +4674,23 @@ clutter_actor_get_preferred_width (ClutterActor *self,
|
||||
{
|
||||
ClutterActorClass *klass;
|
||||
ClutterActorPrivate *priv;
|
||||
gboolean found_in_cache;
|
||||
SizeRequest *cached_size_request;
|
||||
|
||||
g_return_if_fail (CLUTTER_IS_ACTOR (self));
|
||||
|
||||
klass = CLUTTER_ACTOR_GET_CLASS (self);
|
||||
priv = self->priv;
|
||||
|
||||
if (priv->needs_width_request ||
|
||||
priv->request_width_for_height != for_height)
|
||||
found_in_cache = FALSE;
|
||||
cached_size_request = &priv->width_requests[0];
|
||||
|
||||
if (!priv->needs_width_request)
|
||||
found_in_cache = _clutter_actor_get_cached_size_request (for_height,
|
||||
priv->width_requests,
|
||||
&cached_size_request);
|
||||
|
||||
if (!found_in_cache)
|
||||
{
|
||||
gfloat min_width, natural_width;
|
||||
|
||||
@ -4641,16 +4708,21 @@ clutter_actor_get_preferred_width (ClutterActor *self,
|
||||
if (natural_width < min_width)
|
||||
natural_width = min_width;
|
||||
|
||||
if (!priv->min_width_set)
|
||||
priv->request_min_width = min_width;
|
||||
cached_size_request->min_size = min_width;
|
||||
cached_size_request->natural_size = natural_width;
|
||||
cached_size_request->for_size = for_height;
|
||||
cached_size_request->age = priv->cached_width_age;
|
||||
|
||||
if (!priv->natural_width_set)
|
||||
priv->request_natural_width = natural_width;
|
||||
|
||||
priv->request_width_for_height = for_height;
|
||||
priv->cached_width_age ++;
|
||||
priv->needs_width_request = FALSE;
|
||||
}
|
||||
|
||||
if (!priv->min_width_set)
|
||||
priv->request_min_width = cached_size_request->min_size;
|
||||
|
||||
if (!priv->natural_width_set)
|
||||
priv->request_natural_width = cached_size_request->natural_size;
|
||||
|
||||
if (min_width_p)
|
||||
*min_width_p = priv->request_min_width;
|
||||
|
||||
@ -4687,20 +4759,29 @@ clutter_actor_get_preferred_height (ClutterActor *self,
|
||||
{
|
||||
ClutterActorClass *klass;
|
||||
ClutterActorPrivate *priv;
|
||||
gboolean found_in_cache;
|
||||
SizeRequest *cached_size_request;
|
||||
|
||||
g_return_if_fail (CLUTTER_IS_ACTOR (self));
|
||||
|
||||
klass = CLUTTER_ACTOR_GET_CLASS (self);
|
||||
priv = self->priv;
|
||||
|
||||
if (priv->needs_height_request ||
|
||||
priv->request_height_for_width != for_width)
|
||||
found_in_cache = FALSE;
|
||||
cached_size_request = &priv->height_requests[0];
|
||||
|
||||
if (!priv->needs_height_request)
|
||||
found_in_cache = _clutter_actor_get_cached_size_request (for_width,
|
||||
priv->height_requests,
|
||||
&cached_size_request);
|
||||
|
||||
if (!found_in_cache)
|
||||
{
|
||||
gfloat min_height, natural_height;
|
||||
|
||||
min_height = natural_height = 0;
|
||||
|
||||
CLUTTER_NOTE (LAYOUT, "Width request for %.2f px", for_width);
|
||||
CLUTTER_NOTE (LAYOUT, "Height request for %.2f px", for_width);
|
||||
|
||||
klass->get_preferred_height (self, for_width,
|
||||
&min_height,
|
||||
@ -4713,15 +4794,31 @@ clutter_actor_get_preferred_height (ClutterActor *self,
|
||||
natural_height = min_height;
|
||||
|
||||
if (!priv->min_height_set)
|
||||
priv->request_min_height = min_height;
|
||||
{
|
||||
priv->request_min_height = min_height;
|
||||
}
|
||||
|
||||
if (!priv->natural_height_set)
|
||||
priv->request_natural_height = natural_height;
|
||||
{
|
||||
priv->request_natural_height = natural_height;
|
||||
}
|
||||
|
||||
cached_size_request->min_size = min_height;
|
||||
cached_size_request->natural_size = natural_height;
|
||||
cached_size_request->for_size = for_width;
|
||||
cached_size_request->age = priv->cached_height_age;
|
||||
|
||||
priv->cached_height_age ++;
|
||||
|
||||
priv->request_height_for_width = for_width;
|
||||
priv->needs_height_request = FALSE;
|
||||
}
|
||||
|
||||
if (!priv->min_height_set)
|
||||
priv->request_min_height = cached_size_request->min_size;
|
||||
|
||||
if (!priv->natural_height_set)
|
||||
priv->request_natural_height = cached_size_request->natural_size;
|
||||
|
||||
if (min_height_p)
|
||||
*min_height_p = priv->request_min_height;
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user