/**
 * g_object_info_find_vfunc:
 * @info: a #GIObjectInfo
 * @name: The name of a virtual function to find.
 *
 * Locate a virtual function slot with name @name. Note that the namespace
 * for virtuals is distinct from that of methods; there may or may not be
 * a concrete method associated for a virtual. If there is one, it may
 * be retrieved using g_vfunc_info_get_invoker(), otherwise %NULL will be
 * returned.
 * See the documentation for g_vfunc_info_get_invoker() for more
 * information on invoking virtuals.
 *
 * Returns: (transfer full): the #GIVFuncInfo, or %NULL. Free it with
 * g_base_info_unref() when done.
 */
GIVFuncInfo *
g_object_info_find_vfunc (GIObjectInfo *info,
                          const gchar  *name)
{
  gint offset;
  GIRealInfo *rinfo = (GIRealInfo *)info;
  Header *header;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, NULL);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);

  header = (Header *)rinfo->typelib->data;
  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];

  offset = rinfo->offset + header->object_blob_size
    + (blob->n_interfaces + blob->n_interfaces % 2) * 2
    + blob->n_fields * header->field_blob_size
    + blob->n_field_callbacks * header->callback_blob_size
    + blob->n_properties * header->property_blob_size
    + blob->n_methods * header->function_blob_size
    + blob->n_signals * header->signal_blob_size;

  return _g_base_info_find_vfunc (rinfo, offset, blob->n_vfuncs, name);
}
/**
 * g_object_info_get_constant:
 * @info: a #GIObjectInfo
 * @n: index of constant to get
 *
 * Obtain an object type constant at index @n.
 *
 * Returns: (transfer full): the #GIConstantInfo. Free the struct by calling
 * g_base_info_unref() when done.
 */
GIConstantInfo *
g_object_info_get_constant (GIObjectInfo *info,
			    gint          n)
{
  gint offset;
  GIRealInfo *rinfo = (GIRealInfo *)info;
  Header *header;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, NULL);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);

  header = (Header *)rinfo->typelib->data;
  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];

  offset = g_object_info_get_field_offset(info, blob->n_fields)
    + blob->n_properties * header->property_blob_size
    + blob->n_methods * header->function_blob_size
    + blob->n_signals * header->signal_blob_size
    + blob->n_vfuncs * header->vfunc_blob_size
    + n * header->constant_blob_size;

  return (GIConstantInfo *) g_info_new (GI_INFO_TYPE_CONSTANT, (GIBaseInfo*)info,
					rinfo->typelib, offset);
}
/**
 * g_object_info_get_vfunc:
 * @info: a #GIObjectInfo
 * @n: index of virtual function to get
 *
 * Obtain an object type virtual function at index @n.
 *
 * Returns: (transfer full): the #GIVFuncInfo. Free the struct by calling
 * g_base_info_unref() when done.
 */
GIVFuncInfo *
g_object_info_get_vfunc (GIObjectInfo *info,
			 gint          n)
{
  gint offset;
  GIRealInfo *rinfo = (GIRealInfo *)info;
  Header *header;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, NULL);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);

  header = (Header *)rinfo->typelib->data;
  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];

  offset = rinfo->offset + header->object_blob_size
    + (blob->n_interfaces + blob->n_interfaces % 2) * 2
    + blob->n_fields * header->field_blob_size
    + blob->n_field_callbacks * header->callback_blob_size
    + blob->n_properties * header->property_blob_size
    + blob->n_methods * header->function_blob_size
    + blob->n_signals * header->signal_blob_size
    + n * header->vfunc_blob_size;

  return (GIVFuncInfo *) g_info_new (GI_INFO_TYPE_VFUNC, (GIBaseInfo*)info,
				     rinfo->typelib, offset);
}
Example #4
0
File: marshal.c Project: ntd/lgi
/* Creates marshaller closure for specified fundamental object type.
   If specified object does not have custom setvalue/getvalue
   functions registered, returns nil.  Signature is:
   marshaller = marshal.fundamental(gtype) */
static int
marshal_fundamental (lua_State *L)
{
  /* Find associated baseinfo. */
  GIBaseInfo *info = g_irepository_find_by_gtype (NULL,
						  lgi_type_get_gtype (L, 1));
  if (info)
    {
      lgi_gi_info_new (L, info);
      if (GI_IS_OBJECT_INFO (info) && g_object_info_get_fundamental (info))
	{
	  GIObjectInfoGetValueFunction get_value =
	    lgi_object_get_function_ptr (info,
					 g_object_info_get_get_value_function);
	  GIObjectInfoSetValueFunction set_value =
	    lgi_object_get_function_ptr (info,
					 g_object_info_get_set_value_function);
	  if (get_value && set_value)
	    {
	      lua_pushlightuserdata (L, get_value);
	      lua_pushlightuserdata (L, set_value);
	      lua_pushcclosure (L, marshal_fundamental_marshaller, 2);
	      return 1;
	    }
	}
    }

  lua_pushnil (L);
  return 1;
}
/**
 * g_object_info_get_set_value_function_pointer: (skip)
 * @info: a #GIObjectInfo
 *
 * Obtain a pointer to a function which can be used to
 * set a GValue given an instance of this object type.
 * This takes derivation into account and will reversely traverse
 * the base classes of this type, starting at the top type.
 *
 * Returns: the function pointer or %NULL
 */
GIObjectInfoSetValueFunction
g_object_info_get_set_value_function_pointer (GIObjectInfo *info)
{
  g_return_val_if_fail (info != NULL, NULL);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);

  return (GIObjectInfoSetValueFunction)_get_func(info, (SymbolGetter)g_object_info_get_set_value_function);
}
/**
 * g_object_info_get_n_properties:
 * @info: a #GIObjectInfo
 *
 * Obtain the number of properties that this object type has.
 *
 * Returns: number of properties
 */
gint
g_object_info_get_n_properties (GIObjectInfo *info)
{
  GIRealInfo *rinfo = (GIRealInfo *)info;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, 0);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), 0);

  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
  return blob->n_properties;
}
/**
 * g_object_info_get_type_init:
 * @info: a #GIObjectInfo
 *
 * Obtain the function which when called will return the GType
 * function for which this object type is registered.
 *
 * Returns: the type init function
 */
const gchar *
g_object_info_get_type_init (GIObjectInfo *info)
{
  GIRealInfo *rinfo = (GIRealInfo *)info;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, NULL);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);

  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];

  return g_typelib_get_string (rinfo->typelib, blob->gtype_init);
}
/**
 * g_object_info_get_fundamental:
 * @info: a #GIObjectInfo
 *
 * Obtain if the object type is of a fundamental type which is not
 * G_TYPE_OBJECT. This is mostly for supporting GstMiniObject.
 *
 * Returns: %TRUE if the object type is a fundamental type
 */
gboolean
g_object_info_get_fundamental (GIObjectInfo *info)
{
  GIRealInfo *rinfo = (GIRealInfo *)info;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, FALSE);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), FALSE);

  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];

  return blob->fundamental != 0;
}
/**
 * g_object_info_get_field:
 * @info: a #GIObjectInfo
 * @n: index of field to get
 *
 * Obtain an object type field at index @n.
 *
 * Returns: (transfer full): the #GIFieldInfo. Free the struct by calling
 * g_base_info_unref() when done.
 */
GIFieldInfo *
g_object_info_get_field (GIObjectInfo *info,
			 gint          n)
{
  gint offset;
  GIRealInfo *rinfo = (GIRealInfo *)info;

  g_return_val_if_fail (info != NULL, NULL);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);

  offset = g_object_info_get_field_offset(info, n);

  return (GIFieldInfo *) g_info_new (GI_INFO_TYPE_FIELD, (GIBaseInfo*)info, rinfo->typelib, offset);
}
Example #10
0
/**
 * g_object_info_get_interface:
 * @info: a #GIObjectInfo
 * @n: index of interface to get
 *
 * Obtain an object type interface at index @n.
 *
 * Returns: (transfer full): the #GIInterfaceInfo. Free the struct by calling
 * g_base_info_unref() when done.
 */
GIInterfaceInfo *
g_object_info_get_interface (GIObjectInfo *info,
			     gint          n)
{
  GIRealInfo *rinfo = (GIRealInfo *)info;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, NULL);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);

  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];

  return (GIInterfaceInfo *) _g_info_from_entry (rinfo->repository,
						 rinfo->typelib, blob->interfaces[n]);
}
Example #11
0
/**
 * g_object_info_get_set_value_function:
 * @info: a #GIObjectInfo
 *
 * Obtain the symbol name of the function that should be called to convert
 * set a GValue giving an object instance pointer of this object type.
 * I's mainly used fundamental types. The type signature for the symbol
 * is %GIObjectInfoSetValueFunction, to fetch the function pointer
 * see g_object_info_get_set_value_function().
 *
 * Returns: the symbol or %NULL
 */
const char *
g_object_info_get_set_value_function (GIObjectInfo *info)
{
  GIRealInfo *rinfo = (GIRealInfo *)info;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, NULL);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);

  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];

  if (blob->set_value_func)
    return g_typelib_get_string (rinfo->typelib, blob->set_value_func);

  return NULL;
}
Example #12
0
/**
 * g_object_info_get_parent:
 * @info: a #GIObjectInfo
 *
 * Obtain the parent of the object type.
 *
 * Returns: (transfer full): the #GIObjectInfo. Free the struct by calling
 * g_base_info_unref() when done.
 */
GIObjectInfo *
g_object_info_get_parent (GIObjectInfo *info)
{
  GIRealInfo *rinfo = (GIRealInfo *)info;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, NULL);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);

  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];

  if (blob->parent)
    return (GIObjectInfo *) _g_info_from_entry (rinfo->repository,
                                                rinfo->typelib, blob->parent);
  else
    return NULL;
}
Example #13
0
/**
 * g_object_info_find_method:
 * @info: a #GIObjectInfo
 * @name: name of method to obtain
 *
 * Obtain a method of the object type given a @name. %NULL will be
 * returned if there's no method available with that name.
 *
 * Returns: (transfer full): the #GIFunctionInfo. Free the struct by calling
 * g_base_info_unref() when done.
 */
GIFunctionInfo *
g_object_info_find_method (GIObjectInfo *info,
			   const gchar  *name)
{
  gint offset;
  GIRealInfo *rinfo = (GIRealInfo *)info;
  Header *header;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, 0);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), 0);

  header = (Header *)rinfo->typelib->data;
  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];

  offset = g_object_info_get_field_offset(info, blob->n_fields)
    + blob->n_properties * header->property_blob_size;

  return _g_base_info_find_method ((GIBaseInfo*)info, offset, blob->n_methods, name);
}
Example #14
0
/**
 * g_object_info_get_property:
 * @info: a #GIObjectInfo
 * @n: index of property to get
 *
 * Obtain an object type property at index @n.
 *
 * Returns: (transfer full): the #GIPropertyInfo. Free the struct by calling
 * g_base_info_unref() when done.
 */
GIPropertyInfo *
g_object_info_get_property (GIObjectInfo *info,
			    gint          n)
{
  gint offset;
  GIRealInfo *rinfo = (GIRealInfo *)info;
  Header *header;
  ObjectBlob *blob;

  g_return_val_if_fail (info != NULL, NULL);
  g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);

  header = (Header *)rinfo->typelib->data;
  blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];

  offset = g_object_info_get_field_offset(info, blob->n_fields)
    + n * header->property_blob_size;

  return (GIPropertyInfo *) g_info_new (GI_INFO_TYPE_PROPERTY, (GIBaseInfo*)info,
					rinfo->typelib, offset);
}
Example #15
0
static GISignalInfo *
_pygi_lookup_signal_from_g_type (GType g_type,
                                 const gchar *signal_name)
{
    GIRepository *repository;
    GIBaseInfo *info;
    GISignalInfo *signal_info = NULL;

    repository = g_irepository_get_default();
    info = g_irepository_find_by_gtype (repository, g_type);
    if (info == NULL)
        return NULL;

    if (GI_IS_OBJECT_INFO (info))
        signal_info = g_object_info_find_signal ((GIObjectInfo *) info,
                                                 signal_name);
    else if (GI_IS_INTERFACE_INFO (info))
        signal_info = g_interface_info_find_signal ((GIInterfaceInfo *) info,
                                                    signal_name);

    g_base_info_unref (info);
    return signal_info;
}