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animator: Allow retrieving type property type from a key
When asking a key for its target value we also ask the developer to pass in an initialized GValue - but we don't make it easy to know the type of the GValue. A developer has to ask the GObject class for the GParamSpec and then initialize the GValue, instead. Since we know the type of the GValue we should provide a getter for it. We should also allow developers to throw at us GValue with compatible and transformable types. Finally, all the accessors should be constified.
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@ -1340,24 +1340,25 @@ clutter_animator_key_get_type (void)
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/**
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* clutter_animator_key_get_object:
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* @animator_key: a #ClutterAnimatorKey
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* @key: a #ClutterAnimatorKey
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*
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* Retrieves the object a key applies to.
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*
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* Return value: the object an animator_key exist for.
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* Return value: (transfer none): the object an animator_key exist for.
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*
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* Since: 1.2
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*/
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GObject *
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clutter_animator_key_get_object (ClutterAnimatorKey *animator_key)
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clutter_animator_key_get_object (const ClutterAnimatorKey *key)
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{
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g_return_val_if_fail (animator_key, NULL);
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return animator_key->object;
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g_return_val_if_fail (key != NULL, NULL);
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return key->object;
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}
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/**
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* clutter_animator_key_get_property_name:
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* @animator_key: a #ClutterAnimatorKey
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* @key: a #ClutterAnimatorKey
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*
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* Retrieves the name of the property a key applies to.
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*
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@ -1366,16 +1367,37 @@ clutter_animator_key_get_object (ClutterAnimatorKey *animator_key)
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* Since: 1.2
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*/
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G_CONST_RETURN gchar *
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clutter_animator_key_get_property_name (ClutterAnimatorKey *animator_key)
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clutter_animator_key_get_property_name (const ClutterAnimatorKey *key)
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{
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g_return_val_if_fail (animator_key != NULL, NULL);
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g_return_val_if_fail (key != NULL, NULL);
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return animator_key->property_name;
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return key->property_name;
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}
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/**
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* clutter_animator_key_get_property_type:
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* @key: a #ClutterAnimatorKey
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*
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* Retrieves the #GType of the property a key applies to
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*
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* You can use this type to initialize the #GValue to pass to
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* clutter_animator_key_get_value()
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*
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* Return value: the #GType of the property
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*
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* Since: 1.2
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*/
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GType
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clutter_animator_key_get_property_type (const ClutterAnimatorKey *key)
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{
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g_return_val_if_fail (key != NULL, G_TYPE_INVALID);
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return G_VALUE_TYPE (&key->value);
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}
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/**
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* clutter_animator_key_get_mode:
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* @animator_key: a #ClutterAnimatorKey
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* @key: a #ClutterAnimatorKey
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*
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* Retrieves the mode of a #ClutterAnimator key, for the first key of a
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* property for an object this represents the whether the animation is
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@ -1387,16 +1409,16 @@ clutter_animator_key_get_property_name (ClutterAnimatorKey *animator_key)
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* Since: 1.2
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*/
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gulong
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clutter_animator_key_get_mode (ClutterAnimatorKey *animator_key)
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clutter_animator_key_get_mode (const ClutterAnimatorKey *key)
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{
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g_return_val_if_fail (animator_key != NULL, 0);
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g_return_val_if_fail (key != NULL, 0);
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return animator_key->mode;
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return key->mode;
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}
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/**
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* clutter_animator_key_get_progress:
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* @animator_key: a #ClutterAnimatorKey
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* @key: a #ClutterAnimatorKey
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*
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* Retrieves the progress of an clutter_animator_key
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*
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@ -1405,31 +1427,52 @@ clutter_animator_key_get_mode (ClutterAnimatorKey *animator_key)
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* Since: 1.2
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*/
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gdouble
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clutter_animator_key_get_progress (ClutterAnimatorKey *animator_key)
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clutter_animator_key_get_progress (const ClutterAnimatorKey *key)
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{
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g_return_val_if_fail (animator_key != NULL, 0.0);
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g_return_val_if_fail (key != NULL, 0.0);
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return animator_key->progress;
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return key->progress;
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}
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/**
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* clutter_animator_key_get_value:
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* @animator_key: a #ClutterAnimatorKey
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* @key: a #ClutterAnimatorKey
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* @value: a #GValue initialized with the correct type for the animator key
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*
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* Retrieves a copy of the value for a #ClutterAnimatorKey.
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*
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* The passed in GValue needs to be already initialized for the value type.
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* The passed in #GValue needs to be already initialized for the value
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* type of the key or to a type that allow transformation from the value
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* type of the key.
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*
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* Use g_value_unset() when done
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* Use g_value_unset() when done.
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*
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* Return value: %TRUE if the passed #GValue was successfully set, and
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* %FALSE otherwise
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*
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* Since: 1.2
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*/
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void
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clutter_animator_key_get_value (ClutterAnimatorKey *animator_key,
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GValue *value)
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gboolean
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clutter_animator_key_get_value (const ClutterAnimatorKey *key,
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GValue *value)
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{
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g_return_if_fail (animator_key != NULL);
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GType gtype;
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g_value_copy (&animator_key->value, value);
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g_return_val_if_fail (key != NULL, FALSE);
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gtype = G_VALUE_TYPE (&key->value);
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if (g_value_type_compatible (gtype, G_VALUE_TYPE (value)))
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{
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g_value_copy (&key->value, value);
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return TRUE;
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}
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if (g_value_type_transformable (gtype, G_VALUE_TYPE (value)))
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{
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if (g_value_transform (&key->value, value))
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return TRUE;
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}
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return FALSE;
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}
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@ -154,12 +154,13 @@ void clutter_animator_property_set_interpolation (ClutterAnimato
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ClutterInterpolation interpolation);
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GType clutter_animator_key_get_type (void) G_GNUC_CONST;
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GObject * clutter_animator_key_get_object (ClutterAnimatorKey *animator_key);
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G_CONST_RETURN gchar *clutter_animator_key_get_property_name (ClutterAnimatorKey *animator_key);
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gulong clutter_animator_key_get_mode (ClutterAnimatorKey *animator_key);
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gdouble clutter_animator_key_get_progress (ClutterAnimatorKey *animator_key);
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void clutter_animator_key_get_value (ClutterAnimatorKey *animator_key,
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GValue *value);
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GObject * clutter_animator_key_get_object (const ClutterAnimatorKey *animator_key);
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G_CONST_RETURN gchar *clutter_animator_key_get_property_name (const ClutterAnimatorKey *animator_key);
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GType clutter_animator_key_get_property_type (const ClutterAnimatorKey *animator_key);
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gulong clutter_animator_key_get_mode (const ClutterAnimatorKey *animator_key);
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gdouble clutter_animator_key_get_progress (const ClutterAnimatorKey *animator_key);
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gboolean clutter_animator_key_get_value (const ClutterAnimatorKey *animator_key,
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GValue *value);
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G_END_DECLS
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