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paint_volume: add private api to change reference actor

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For Clone actors we will need a way to report the volume of the source
actor as the volume of the clone actor. To make this work though we need
to be able to replace the reference to the source actor with a reference
to the clone actor instead. This adds a private
_clutter_paint_volume_set_reference_actor function to do that.
This commit is contained in:
Robert Bragg 2010-09-09 18:51:17 +01:00
parent 2d895816be
commit 7d8effd5e2
2 changed files with 34 additions and 17 deletions
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15
clutter/clutter-paint-volume.c
View File

@ -908,3 +908,18 @@ clutter_paint_volume_set_from_allocation (ClutterPaintVolume *pv,
return _clutter_actor_set_default_paint_volume (actor, G_TYPE_INVALID, pv);
}
/* Currently paint volumes are defined relative to a given actor, but
* in some cases it is desireable to be able to change the actor that
* a volume relates too (For instance for ClutterClone actors where we
* need to masquarade the source actors volume as the volume for the
* clone). */
void
_clutter_paint_volume_set_reference_actor (ClutterPaintVolume *pv,
ClutterActor *actor)
{
g_return_if_fail (pv != NULL);
g_object_unref (pv->actor);
pv->actor = g_object_ref (actor);
}

36
clutter/clutter-private.h
View File

@ -505,24 +505,26 @@ gpointer _clutter_event_get_platform_data (const ClutterEvent *event);
#endif
void _clutter_paint_volume_init_static (ClutterActor *actor,
ClutterPaintVolume *pv);
ClutterPaintVolume *_clutter_paint_volume_new (ClutterActor *actor);
void _clutter_paint_volume_copy_static (const ClutterPaintVolume *src_pv,
ClutterPaintVolume *dst_pv);
void _clutter_paint_volume_set_from_volume (ClutterPaintVolume *pv,
const ClutterPaintVolume *src);
void _clutter_paint_volume_init_static (ClutterActor *actor,
ClutterPaintVolume *pv);
ClutterPaintVolume *_clutter_paint_volume_new (ClutterActor *actor);
void _clutter_paint_volume_copy_static (const ClutterPaintVolume *src_pv,
ClutterPaintVolume *dst_pv);
void _clutter_paint_volume_set_from_volume (ClutterPaintVolume *pv,
const ClutterPaintVolume *src);
void _clutter_paint_volume_complete (ClutterPaintVolume *pv);
void _clutter_paint_volume_transform (ClutterPaintVolume *pv,
const CoglMatrix *matrix);
void _clutter_paint_volume_project (ClutterPaintVolume *pv,
const CoglMatrix *modelview,
const CoglMatrix *projection,
const int *viewport);
void _clutter_paint_volume_get_bounding_box (ClutterPaintVolume *pv,
ClutterActorBox *box);
void _clutter_paint_volume_axis_align (ClutterPaintVolume *pv);
void _clutter_paint_volume_complete (ClutterPaintVolume *pv);
void _clutter_paint_volume_transform (ClutterPaintVolume *pv,
const CoglMatrix *matrix);
void _clutter_paint_volume_project (ClutterPaintVolume *pv,
const CoglMatrix *modelview,
const CoglMatrix *projection,
const int *viewport);
void _clutter_paint_volume_get_bounding_box (ClutterPaintVolume *pv,
ClutterActorBox *box);
void _clutter_paint_volume_axis_align (ClutterPaintVolume *pv);
void _clutter_paint_volume_set_reference_actor (ClutterPaintVolume *pv,
ClutterActor *actor);