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geometry: Register a progress function

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This allows animating properties storing a ClutterGeometry.
This commit is contained in:
Emmanuele Bassi 2010-10-11 15:44:09 +01:00
parent a5fc90d4d9
commit 4931802fee
1 changed files with 30 additions and 4 deletions
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34
clutter/clutter-actor.c
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@ -9114,16 +9114,42 @@ clutter_geometry_free (ClutterGeometry *geometry)
g_slice_free (ClutterGeometry, geometry);
}
static gboolean
clutter_geometry_progress (const GValue *a,
const GValue *b,
gdouble progress,
GValue *retval)
{
const ClutterGeometry *a_geom = g_value_get_boxed (a);
const ClutterGeometry *b_geom = g_value_get_boxed (b);
ClutterGeometry res = { 0, };
res.x = a_geom->x + (b_geom->x - a_geom->x) * progress;
res.y = a_geom->y + (b_geom->y - a_geom->y) * progress;
res.width = a_geom->width + (b_geom->width - a_geom->width) * progress;
res.height = a_geom->height + (b_geom->height - a_geom->height) * progress;
g_value_set_boxed (retval, &res);
return TRUE;
}
GType
clutter_geometry_get_type (void)
{
static GType our_type = 0;
if (G_UNLIKELY (our_type == 0))
our_type =
g_boxed_type_register_static (I_("ClutterGeometry"),
(GBoxedCopyFunc) clutter_geometry_copy,
(GBoxedFreeFunc) clutter_geometry_free);
{
our_type =
g_boxed_type_register_static (I_("ClutterGeometry"),
(GBoxedCopyFunc) clutter_geometry_copy,
(GBoxedFreeFunc) clutter_geometry_free);
clutter_interval_register_progress_func (our_type,
clutter_geometry_progress);
}
return our_type;
}