C++ (Cpp) s_object_weak_ref Examples

Example #1

File: gschem_find_text_state.c Project: gareth8118/geda-gaf

/*! \brief places object in the store so the user can see them
 *
 *  \param [in] state
 *  \param [in] objects the list of objects to put in the store
 */
static void
assign_store (GschemFindTextState *state, GSList *objects)
{
  GSList *object_iter;

  g_return_if_fail (state != NULL);
  g_return_if_fail (state->store != NULL);

  clear_store (state);

  object_iter = objects;

  while (object_iter != NULL) {
    char *basename;
    OBJECT *object = (OBJECT*) object_iter->data;
    const char *str;
    GtkTreeIter tree_iter;

    object_iter = g_slist_next (object_iter);

    if (object == NULL) {
      g_warning ("NULL object encountered");
      continue;
    }

    if (object->page == NULL) {
      g_warning ("NULL page encountered");
      continue;
    }

    if (object->type != OBJ_TEXT) {
      g_warning ("expecting a text object");
      continue;
    }

    str = geda_text_object_get_string (object);

    if (str == NULL) {
      g_warning ("NULL string encountered");
      continue;
    }

    s_object_weak_ref (object, (NotifyFunc) object_weakref_cb, state);

    gtk_list_store_append (state->store, &tree_iter);

    basename = g_path_get_basename (s_page_get_filename (object->page));

    gtk_list_store_set (state->store,
                        &tree_iter,
                        COLUMN_FILENAME, basename,
                        COLUMN_STRING, str,
                        COLUMN_OBJECT, object,
                        -1);

    g_free (basename);
  }
}

Example #2

File: scheme_smob.c Project: SayCV/geda-gaf

/*! \brief Get a smob for a schematic object.
 * \ingroup guile_c_iface
 * \par Function Description
 * Create a new smob representing \a object.
 *
 * \warning The returned smob is initially marked as owned by the C
 *   code. If it should be permitted to be garbage-collected, you
 *   should set the garbage-collectable flag by calling:
 *
 * \code
 *   SCM x = edascm_from_object (object);
 *   edascm_c_set_gc (x, 1);
 * \endcode
 *
 * \note We currently have to bake a TOPLEVEL pointer into the smob,
 * so that if the object becomes garbage-collectable we can obtain a
 * TOPLEVEL to use for deleting the smob without accessing the
 * TOPLEVEL fluid and potentially causing a race condition (see bug
 * 909358).
 *
 * \param object #OBJECT to create a smob for.
 * \return a smob representing \a object.
 */
SCM
edascm_from_object (OBJECT *object)
{
  SCM smob;
  TOPLEVEL *toplevel = edascm_c_current_toplevel ();

  SCM_NEWSMOB2 (smob, geda_smob_tag, object, toplevel);
  SCM_SET_SMOB_FLAGS (smob, GEDA_SMOB_OBJECT);

  /* Set weak references */
  s_object_weak_ref (object, smob_weakref_notify, smob);
  s_toplevel_weak_ref (toplevel, smob_weakref2_notify, smob);

  return smob;
}

Example #3

File: scheme_smob.c Project: gareth8118/geda-gaf

/*! \brief Get a smob for a schematic object.
 * \ingroup guile_c_iface
 * \par Function Description
 * Create a new smob representing \a object.
 *
 * \warning The returned smob is initially marked as owned by the C
 *   code. If it should be permitted to be garbage-collected, you
 *   should set the garbage-collectable flag by calling:
 *
 * \code
 *   SCM x = edascm_from_object (object);
 *   edascm_c_set_gc (x, 1);
 * \endcode
 *
 * \note We currently have to bake a TOPLEVEL pointer into the smob,
 * so that if the object becomes garbage-collectable we can obtain a
 * TOPLEVEL to use for deleting the smob without accessing the
 * TOPLEVEL fluid and potentially causing a race condition (see bug
 * 909358).
 *
 * \param object #OBJECT to create a smob for.
 * \return a smob representing \a object.
 */
SCM
edascm_from_object (OBJECT *object)
{
  SCM smob = smob_cache_lookup (object);

  if (EDASCM_OBJECTP (smob)) {
    return smob;
  }

  TOPLEVEL *toplevel = edascm_c_current_toplevel ();

  SCM_NEWSMOB2 (smob, geda_smob_tag, object, toplevel);
  SCM_SET_SMOB_FLAGS (smob, GEDA_SMOB_OBJECT);

  /* Set weak references */
  s_object_weak_ref (object, smob_weakref2_notify,
                     unpack_as_pointer (smob));

  smob_cache_add (object, smob);

  return smob;
}