C++ (Cpp) rut_type_add_trait Examples

Example #1

static void
_rut_fold_init_type(void)
{
    static rut_graphable_vtable_t graphable_vtable = { NULL, /* child removed */
                                                       NULL, /* child added */
                                                       NULL /* parent changed */
    };
    static rut_sizable_vtable_t sizable_vtable = {
        rut_composite_sizable_set_size,
        rut_composite_sizable_get_size,
        rut_composite_sizable_get_preferred_width,
        rut_composite_sizable_get_preferred_height,
        rut_composite_sizable_add_preferred_size_callback
    };

    rut_type_t *type = &rut_fold_type;
#define TYPE rut_fold_t

    rut_type_init(type, C_STRINGIFY(TYPE), _rut_fold_free);
    rut_type_add_trait(type,
                       RUT_TRAIT_ID_GRAPHABLE,
                       offsetof(TYPE, graphable),
                       &graphable_vtable);
    rut_type_add_trait(type,
                       RUT_TRAIT_ID_SIZABLE,
                       0, /* no implied properties */
                       &sizable_vtable);
    rut_type_add_trait(type,
                       RUT_TRAIT_ID_COMPOSITE_SIZABLE,
                       offsetof(TYPE, vbox),
                       NULL); /* no vtable */
    rut_type_add_trait(type,
                       RUT_TRAIT_ID_INTROSPECTABLE,
                       offsetof(TYPE, introspectable),
                       NULL); /* no implied vtable */

#undef TYPE
}

Example #2

static void
_rut_rectangle_init_type(void)
{

    static rut_graphable_vtable_t graphable_vtable = { NULL, /* child remove */
                                                       NULL, /* child add */
                                                       NULL /* parent changed */
    };

    static rut_paintable_vtable_t paintable_vtable = { _rut_rectangle_paint };

    static rut_sizable_vtable_t sizable_vtable = {
        rut_rectangle_set_size,
        rut_rectangle_get_size,
        rut_simple_sizable_get_preferred_width,
        rut_simple_sizable_get_preferred_height,
        NULL /* add_preferred_size_callback */
    };

    rut_type_t *type = &rut_rectangle_type;
#define TYPE rut_rectangle_t

    rut_type_init(type, C_STRINGIFY(TYPE), _rut_rectangle_free);
    rut_type_add_trait(type,
                       RUT_TRAIT_ID_GRAPHABLE,
                       offsetof(TYPE, graphable),
                       &graphable_vtable);
    rut_type_add_trait(type,
                       RUT_TRAIT_ID_PAINTABLE,
                       offsetof(TYPE, paintable),
                       &paintable_vtable);
    rut_type_add_trait(type,
                       RUT_TRAIT_ID_SIZABLE,
                       0, /* no implied properties */
                       &sizable_vtable);

#undef TYPE
}