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clutter/actor: Split building the transform into a separate function

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It'll be used independently by the next commit to ensure ClutterStage
has a valid transform set.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1439
This commit is contained in:
Georges Basile Stavracas Neto 2020-09-11 10:29:46 -03:00
parent 2e986ed3e8
commit 1d13c52db8
1 changed files with 16 additions and 8 deletions
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24
clutter/clutter/clutter-actor.c
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@ -3145,20 +3145,28 @@ roll_back_pivot:
/* Applies the transforms associated with this actor to the given /* Applies the transforms associated with this actor to the given
* matrix. */ * matrix. */
static void
ensure_valid_actor_transform (ClutterActor *actor)
{
ClutterActorPrivate *priv = actor->priv;
if (priv->transform_valid)
return;
CLUTTER_ACTOR_GET_CLASS (actor)->apply_transform (actor, &priv->transform);
priv->has_inverse_transform =
cogl_matrix_get_inverse (&priv->transform, &priv->inverse_transform);
priv->transform_valid = TRUE;
}
void void
_clutter_actor_apply_modelview_transform (ClutterActor *self, _clutter_actor_apply_modelview_transform (ClutterActor *self,
CoglMatrix *matrix) CoglMatrix *matrix)
{ {
ClutterActorPrivate *priv = self->priv; ClutterActorPrivate *priv = self->priv;
if (priv->transform_valid) ensure_valid_actor_transform (self);
goto out;
CLUTTER_ACTOR_GET_CLASS (self)->apply_transform (self, &priv->transform);
priv->transform_valid = TRUE;
out:
cogl_matrix_multiply (matrix, matrix, &priv->transform); cogl_matrix_multiply (matrix, matrix, &priv->transform);
} }