Add support for the anchor point inside ClutterScript (#834,
David Stanczak)
* clutter/clutter-actor.c:
(clutter_actor_set_property),
(clutter_actor_get_property),
(clutter_actor_class_init): Add the :anchor-x and :anchor-y
properties to the ClutterActor class.
(clutter_actor_set_anchor_point),
(clutter_actor_set_anchor_pointu),
(clutter_actor_set_anchor_point_from_gravity): Reimplement
the pixel based and gravity based API using the units based
one. Emit the ::notify signal for the :anchor-x and :anchor-y
properties.
(parse_units),
(clutter_actor_parse_custom_node): Parse the :anchor-x and
:anchor-y properties using the custom units format (mm, px,
pt and %).
* tests/test-script.json: Test the newly added properties.