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layout: Add layout properties introspection
In order to know if a layout property exists and retrieve its description in form of a GParamSpec, we need a wrapper API inside ClutterLayoutManager. This allows introspecting a LayoutManager sub-class and eventually serialize and deserialize it.
This commit is contained in:
Emmanuele Bassi
parent
b0c9de2730
commit
c3368c0d15
@ -913,3 +913,79 @@ clutter_layout_manager_child_get_property (ClutterLayoutManager *manager,
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layout_get_property_internal (manager, G_OBJECT (meta), pspec, value);
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}
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/**
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* clutter_layout_manager_find_child_property:
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* @manager: a #ClutterLayoutManager
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* @name: the name of the property
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*
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* Retrieves the #GParamSpec for the layout property @name inside
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* the #ClutterLayoutMeta sub-class used by @manager
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*
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* Return value: (transfer none): a #GParamSpec describing the property,
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* or %NULL if no property with that name exists. The returned
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* #GParamSpec is owned by the layout manager and should not be
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* modified or freed
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*
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* Since: 1.2
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*/
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GParamSpec *
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clutter_layout_manager_find_child_property (ClutterLayoutManager *manager,
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const gchar *name)
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{
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ClutterLayoutManagerClass *klass;
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GObjectClass *meta_klass;
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GParamSpec *pspec;
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GType meta_type;
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klass = CLUTTER_LAYOUT_MANAGER_GET_CLASS (manager);
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meta_type = klass->get_child_meta_type (manager);
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if (meta_type == G_TYPE_INVALID)
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return NULL;
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meta_klass = g_type_class_ref (meta_type);
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pspec = g_object_class_find_property (meta_klass, name);
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g_type_class_unref (meta_klass);
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return pspec;
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}
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/**
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* clutter_layout_manager_list_child_properties:
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* @manager: a #ClutterLayoutManager
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* @n_pspecs: (out): return location for the number of returned
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* #GParamSpec<!-- -->s
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*
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* Retrieves all the #GParamSpec<!-- -->s for the layout properties
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* stored inside the #ClutterLayoutMeta sub-class used by @manager
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*
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* Return value: (transfer full): the newly-allocated, %NULL-terminated
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* array of #GParamSpec<!-- -->s. Use g_free() to free the resources
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* allocated for the array
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*
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* Since: 1.2
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*/
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GParamSpec **
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clutter_layout_manager_list_child_properties (ClutterLayoutManager *manager,
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guint *n_pspecs)
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{
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ClutterLayoutManagerClass *klass;
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GObjectClass *meta_klass;
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GParamSpec **pspecs;
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GType meta_type;
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klass = CLUTTER_LAYOUT_MANAGER_GET_CLASS (manager);
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meta_type = klass->get_child_meta_type (manager);
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if (meta_type == G_TYPE_INVALID)
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return NULL;
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meta_klass = g_type_class_ref (meta_type);
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pspecs = g_object_class_list_properties (meta_klass, n_pspecs);
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g_type_class_unref (meta_klass);
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return pspecs;
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}
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@ -135,55 +135,60 @@ struct _ClutterLayoutManagerClass
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GType clutter_layout_manager_get_type (void) G_GNUC_CONST;
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void clutter_layout_manager_get_preferred_width (ClutterLayoutManager *manager,
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ClutterContainer *container,
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gfloat for_height,
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gfloat *min_width_p,
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gfloat *nat_width_p);
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void clutter_layout_manager_get_preferred_height (ClutterLayoutManager *manager,
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ClutterContainer *container,
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gfloat for_width,
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gfloat *min_height_p,
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gfloat *nat_height_p);
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void clutter_layout_manager_allocate (ClutterLayoutManager *manager,
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ClutterContainer *container,
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const ClutterActorBox *allocation,
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ClutterAllocationFlags flags);
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void clutter_layout_manager_get_preferred_width (ClutterLayoutManager *manager,
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ClutterContainer *container,
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gfloat for_height,
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gfloat *min_width_p,
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gfloat *nat_width_p);
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void clutter_layout_manager_get_preferred_height (ClutterLayoutManager *manager,
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ClutterContainer *container,
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gfloat for_width,
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gfloat *min_height_p,
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gfloat *nat_height_p);
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void clutter_layout_manager_allocate (ClutterLayoutManager *manager,
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ClutterContainer *container,
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const ClutterActorBox *allocation,
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ClutterAllocationFlags flags);
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void clutter_layout_manager_set_container (ClutterLayoutManager *manager,
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ClutterContainer *container);
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void clutter_layout_manager_layout_changed (ClutterLayoutManager *manager);
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void clutter_layout_manager_set_container (ClutterLayoutManager *manager,
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ClutterContainer *container);
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void clutter_layout_manager_layout_changed (ClutterLayoutManager *manager);
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ClutterLayoutMeta *clutter_layout_manager_get_child_meta (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor);
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void clutter_layout_manager_add_child_meta (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor);
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void clutter_layout_manager_remove_child_meta (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor);
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GParamSpec * clutter_layout_manager_find_child_property (ClutterLayoutManager *manager,
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const gchar *name);
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GParamSpec ** clutter_layout_manager_list_child_properties (ClutterLayoutManager *manager,
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guint *n_pspecs);
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void clutter_layout_manager_child_set (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor,
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const gchar *first_property,
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...) G_GNUC_NULL_TERMINATED;
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void clutter_layout_manager_child_get (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor,
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const gchar *first_property,
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...) G_GNUC_NULL_TERMINATED;
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void clutter_layout_manager_child_set_property (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor,
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const gchar *property_name,
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const GValue *value);
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void clutter_layout_manager_child_get_property (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor,
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const gchar *property_name,
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GValue *value);
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ClutterLayoutMeta *clutter_layout_manager_get_child_meta (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor);
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void clutter_layout_manager_add_child_meta (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor);
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void clutter_layout_manager_remove_child_meta (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor);
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void clutter_layout_manager_child_set (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor,
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const gchar *first_property,
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...) G_GNUC_NULL_TERMINATED;
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void clutter_layout_manager_child_get (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor,
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const gchar *first_property,
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...) G_GNUC_NULL_TERMINATED;
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void clutter_layout_manager_child_set_property (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor,
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const gchar *property_name,
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const GValue *value);
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void clutter_layout_manager_child_get_property (ClutterLayoutManager *manager,
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ClutterContainer *container,
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ClutterActor *actor,
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const gchar *property_name,
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GValue *value);
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G_END_DECLS
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