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actor: Add minification/magnification filters

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These settings are informative, and will only be used by the eventual
content of an actor.
This commit is contained in:
Emmanuele Bassi 2012-03-08 17:18:17 +00:00
parent cadae5b325
commit 77729c7362
3 changed files with 133 additions and 1 deletions
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120
clutter/clutter-actor.c
View file

@ -166,7 +166,9 @@
* clutter_actor_get_allocation_box (actor, &box);
*
* /* the cogl_texture variable is set elsewhere */
* node = clutter_texture_node_new (cogl_texture, CLUTTER_COLOR_White);
* node = clutter_texture_node_new (cogl_texture, CLUTTER_COLOR_White,
* CLUTTER_SCALING_FILTER_BILINEAR,
* CLUTTER_SCALING_FILTER_LINEAR);
*
* /* paint the content of the node using the allocation */
* clutter_paint_node_add_rectangle (node, &box);
@ -588,6 +590,8 @@ struct _ClutterActorPrivate
ClutterContent *content;
ClutterContentGravity content_gravity;
ClutterScalingFilter min_filter;
ClutterScalingFilter mag_filter;
/* used when painting, to update the paint volume */
ClutterEffect *current_effect;
@ -754,6 +758,8 @@ enum
PROP_CONTENT,
PROP_CONTENT_GRAVITY,
PROP_CONTENT_BOX,
PROP_MINIFICATION_FILTER,
PROP_MAGNIFICATION_FILTER,
PROP_LAST
};
@ -4471,6 +4477,18 @@ clutter_actor_set_property (GObject *object,
clutter_actor_set_content_gravity (actor, g_value_get_enum (value));
break;
case PROP_MINIFICATION_FILTER:
clutter_actor_set_content_scaling_filters (actor,
g_value_get_enum (value),
actor->priv->mag_filter);
break;
case PROP_MAGNIFICATION_FILTER:
clutter_actor_set_content_scaling_filters (actor,
actor->priv->min_filter,
g_value_get_enum (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -4886,6 +4904,14 @@ clutter_actor_get_property (GObject *object,
}
break;
case PROP_MINIFICATION_FILTER:
g_value_set_enum (value, priv->min_filter);
break;
case PROP_MAGNIFICATION_FILTER:
g_value_set_enum (value, priv->mag_filter);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -6352,6 +6378,22 @@ clutter_actor_class_init (ClutterActorClass *klass)
CLUTTER_TYPE_ACTOR_BOX,
CLUTTER_PARAM_READABLE);
obj_props[PROP_MINIFICATION_FILTER] =
g_param_spec_enum ("minification-filter",
P_("Minification Filter"),
P_("The filter used when reducing the size of the content"),
CLUTTER_TYPE_SCALING_FILTER,
CLUTTER_SCALING_FILTER_LINEAR,
CLUTTER_PARAM_READWRITE);
obj_props[PROP_MAGNIFICATION_FILTER] =
g_param_spec_enum ("magnification-filter",
P_("Magnification Filter"),
P_("The filter used when increasing the size of the content"),
CLUTTER_TYPE_SCALING_FILTER,
CLUTTER_SCALING_FILTER_LINEAR,
CLUTTER_PARAM_READWRITE);
g_object_class_install_properties (object_class, PROP_LAST, obj_props);
/**
@ -6937,6 +6979,8 @@ clutter_actor_init (ClutterActor *self)
* the easiest thing to compute.
*/
priv->content_gravity = CLUTTER_CONTENT_GRAVITY_RESIZE_FILL;
priv->min_filter = CLUTTER_SCALING_FILTER_LINEAR;
priv->mag_filter = CLUTTER_SCALING_FILTER_LINEAR;
}
/**
@ -17745,3 +17789,77 @@ clutter_actor_get_content_box (ClutterActor *self,
break;
}
}
/**
* clutter_actor_set_content_scaling_filters:
* @self: a #ClutterActor
* @min_filter: FIXME
* @mag_filter: FIXME
*
* FIXME
*
* Since: 1.10
*/
void
clutter_actor_set_content_scaling_filters (ClutterActor *self,
ClutterScalingFilter min_filter,
ClutterScalingFilter mag_filter)
{
ClutterActorPrivate *priv;
gboolean changed;
GObject *obj;
g_return_if_fail (CLUTTER_IS_ACTOR (self));
priv = self->priv;
obj = G_OBJECT (self);
g_object_freeze_notify (obj);
changed = FALSE;
if (priv->min_filter != min_filter)
{
priv->min_filter = min_filter;
changed = TRUE;
g_object_notify_by_pspec (obj, obj_props[PROP_MINIFICATION_FILTER]);
}
if (priv->mag_filter != mag_filter)
{
priv->mag_filter = mag_filter;
changed = TRUE;
g_object_notify_by_pspec (obj, obj_props[PROP_MAGNIFICATION_FILTER]);
}
if (changed)
clutter_actor_queue_redraw (self);
g_object_thaw_notify (obj);
}
/**
* clutter_actor_get_content_scaling_filters:
* @self: a #ClutterActor
* @min_filter: (out): FIXME
* @mag_filter: (out): FIXME
*
* FIXME
*
* Since: 1.10
*/
void
clutter_actor_get_content_scaling_filters (ClutterActor *self,
ClutterScalingFilter *min_filter,
ClutterScalingFilter *mag_filter)
{
g_return_if_fail (CLUTTER_IS_ACTOR (self));
if (min_filter != NULL)
*min_filter = self->priv->min_filter;
if (mag_filter != NULL)
*mag_filter = self->priv->mag_filter;
}

8
clutter/clutter-actor.h
View file

@ -480,6 +480,14 @@ void clutter_actor_set_content_gravity
CLUTTER_AVAILABLE_IN_1_10
ClutterContentGravity clutter_actor_get_content_gravity (ClutterActor *self);
CLUTTER_AVAILABLE_IN_1_10
void clutter_actor_set_content_scaling_filters (ClutterActor *self,
ClutterScalingFilter min_filter,
ClutterScalingFilter mag_filter);
CLUTTER_AVAILABLE_IN_1_10
void clutter_actor_get_content_scaling_filters (ClutterActor *self,
ClutterScalingFilter *min_filter,
ClutterScalingFilter *mag_filter);
CLUTTER_AVAILABLE_IN_1_10
void clutter_actor_get_content_box (ClutterActor *self,
ClutterActorBox *box);
CLUTTER_AVAILABLE_IN_1_10

6
clutter/clutter-enums.h
View file

@ -1149,6 +1149,12 @@ typedef enum {
CLUTTER_CONTENT_GRAVITY_RESIZE_ASPECT
} ClutterContentGravity;
typedef enum {
CLUTTER_SCALING_FILTER_LINEAR,
CLUTTER_SCALING_FILTER_NEAREST,
CLUTTER_SCALING_FILTER_BILINEAR
} ClutterScalingFilter;
G_END_DECLS
#endif /* __CLUTTER_ENUMS_H__ */