static void
clutter_align_constraint_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterAlignConstraint *align = CLUTTER_ALIGN_CONSTRAINT (gobject);
switch (prop_id)
{
case PROP_SOURCE:
g_value_set_object (value, align->source);
break;
case PROP_ALIGN_AXIS:
g_value_set_enum (value, align->align_axis);
break;
case PROP_FACTOR:
g_value_set_float (value, align->factor);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_align_constraint_set_actor (ClutterActorMeta *meta,
ClutterActor *new_actor)
{
ClutterAlignConstraint *align = CLUTTER_ALIGN_CONSTRAINT (meta);
ClutterActorMetaClass *parent;
if (new_actor != NULL &&
align->source != NULL &&
clutter_actor_contains (new_actor, align->source))
{
g_warning (G_STRLOC ": The source actor '%s' is contained "
"by the actor '%s' associated to the constraint "
"'%s'",
_clutter_actor_get_debug_name (align->source),
_clutter_actor_get_debug_name (new_actor),
_clutter_actor_meta_get_debug_name (meta));
return;
}
/* store the pointer to the actor, for later use */
align->actor = new_actor;
parent = CLUTTER_ACTOR_META_CLASS (clutter_align_constraint_parent_class);
parent->set_actor (meta, new_actor);
}
static void
clutter_align_constraint_set_actor (ClutterActorMeta *meta,
ClutterActor *new_actor)
{
ClutterAlignConstraint *align = CLUTTER_ALIGN_CONSTRAINT (meta);
ClutterActorMetaClass *parent;
/* store the pointer to the actor, for later use */
align->actor = new_actor;
parent = CLUTTER_ACTOR_META_CLASS (clutter_align_constraint_parent_class);
parent->set_actor (meta, new_actor);
}
static void
clutter_align_constraint_update_allocation (ClutterConstraint *constraint,
ClutterActor *actor,
ClutterActorBox *allocation)
{
ClutterAlignConstraint *align = CLUTTER_ALIGN_CONSTRAINT (constraint);
gfloat source_width, source_height;
gfloat actor_width, actor_height;
gfloat source_x, source_y;
if (align->source == NULL)
return;
clutter_actor_box_get_size (allocation, &actor_width, &actor_height);
clutter_actor_get_position (align->source, &source_x, &source_y);
clutter_actor_get_size (align->source, &source_width, &source_height);
switch (align->align_axis)
{
case CLUTTER_ALIGN_X_AXIS:
allocation->x1 = ((source_width - actor_width) * align->factor)
+ source_x;
allocation->x1 = floorf (allocation->x1 + 0.5);
allocation->x2 = allocation->x1 + actor_width;
break;
case CLUTTER_ALIGN_Y_AXIS:
allocation->y1 = ((source_height - actor_height) * align->factor)
+ source_y;
allocation->y1 = floorf (allocation->y1 + 0.5);
allocation->y2 = allocation->y1 + actor_height;
break;
case CLUTTER_ALIGN_BOTH:
allocation->x1 = ((source_width - actor_width) * align->factor)
+ source_x;
allocation->y1 = ((source_height - actor_height) * align->factor)
+ source_y;
allocation->x1 = floorf (allocation->x1 + 0.5f);
allocation->y1 = floorf (allocation->y1 + 0.5f);
allocation->x2 = allocation->x1 + actor_width;
allocation->y2 = allocation->y1 + actor_height;
break;
default:
g_assert_not_reached ();
break;
}
}
static void
clutter_align_constraint_dispose (GObject *gobject)
{
ClutterAlignConstraint *align = CLUTTER_ALIGN_CONSTRAINT (gobject);
if (align->source != NULL)
{
g_signal_handlers_disconnect_by_func (align->source,
G_CALLBACK (source_destroyed),
align);
g_signal_handlers_disconnect_by_func (align->source,
G_CALLBACK (source_position_changed),
align);
align->source = NULL;
}
G_OBJECT_CLASS (clutter_align_constraint_parent_class)->dispose (gobject);
}
