/**
* gst_child_proxy_set_valist:
* @object: the parent object
* @first_property_name: name of the first property to set
* @var_args: value for the first property, followed optionally by more name/value pairs, followed by NULL
*
* Sets properties of the parent object and its children.
*/
void
gst_child_proxy_set_valist (GstChildProxy * object,
const gchar * first_property_name, va_list var_args)
{
const gchar *name;
gchar *error = NULL;
GValue value = { 0, };
GParamSpec *pspec;
GObject *target;
g_return_if_fail (GST_IS_CHILD_PROXY (object));
name = first_property_name;
/* iterate over pairs */
while (name) {
if (!gst_child_proxy_lookup (object, name, &target, &pspec))
goto not_found;
G_VALUE_COLLECT_INIT (&value, pspec->value_type, var_args,
G_VALUE_NOCOPY_CONTENTS, &error);
if (error)
goto cant_copy;
g_object_set_property (target, pspec->name, &value);
g_object_unref (target);
g_value_unset (&value);
name = va_arg (var_args, gchar *);
}
return;
not_found:
{
g_warning ("no property %s in object %s", name,
(GST_IS_OBJECT (object) ? GST_OBJECT_NAME (object) : ""));
return;
}
cant_copy:
{
g_warning ("error copying value %s in object %s: %s", pspec->name,
(GST_IS_OBJECT (object) ? GST_OBJECT_NAME (object) : ""), error);
g_value_unset (&value);
g_object_unref (target);
return;
}
}
/**
* gst_tracer_record_new:
* @name: name of new record, must end on ".class".
* @firstfield: name of first field to set
* @...: additional arguments
*
* Create a new tracer record. The record instance can be used to efficiently
* log entries using gst_tracer_record_log().
*
* The @name without the ".class" suffix will be used for the log records.
* There must be fields for each value that gets logged where the field name is
* the value name. The field must be a #GstStructure describing the value. The
* sub structure must contain a field called 'type' of %G_TYPE_GTYPE that
* contains the GType of the value. The resulting #GstTracerRecord will take
* ownership of the field structures.
*
* The way to deal with optional values is to log an additional boolean before
* the optional field, that if %TRUE signals that the optional field is valid
* and %FALSE signals that the optional field should be ignored. One must still
* log a placeholder value for the optional field though. Please also note, that
* pointer type values must not be NULL - the underlying serialisation can not
* handle that right now.
*
* > Please note that this is still under discussion and subject to change.
*
* Returns: (transfer full): a new #GstTracerRecord
*/
GstTracerRecord *
gst_tracer_record_new (const gchar * name, const gchar * firstfield, ...)
{
GstTracerRecord *self;
GstStructure *structure;
va_list varargs;
gchar *err = NULL;
GType type;
GQuark id;
va_start (varargs, firstfield);
structure = gst_structure_new_empty (name);
while (firstfield) {
GValue val = { 0, };
id = g_quark_from_string (firstfield);
type = va_arg (varargs, GType);
/* all fields passed here must be GstStructures which we take over */
if (type != GST_TYPE_STRUCTURE) {
GST_WARNING ("expected field of type GstStructure, but %s is %s",
firstfield, g_type_name (type));
}
G_VALUE_COLLECT_INIT (&val, type, varargs, G_VALUE_NOCOPY_CONTENTS, &err);
if (G_UNLIKELY (err)) {
g_critical ("%s", err);
break;
}
/* see boxed_proxy_collect_value */
val.data[1].v_uint &= ~G_VALUE_NOCOPY_CONTENTS;
gst_structure_id_take_value (structure, id, &val);
firstfield = va_arg (varargs, gchar *);
}
va_end (varargs);
self = g_object_new (GST_TYPE_TRACER_RECORD, NULL);
/* Clear floating flag */
gst_object_ref_sink (self);
self->spec = structure;
gst_tracer_record_build_format (self);
return self;
}
/**
* clutter_container_child_set:
* @container: a #ClutterContainer
* @actor: a #ClutterActor that is a child of @container.
* @first_prop: name of the first property to be set.
* @...: value for the first property, followed optionally by more name/value
* pairs terminated with NULL.
*
* Sets container specific properties on the child of a container.
*
* Since: 0.8
*/
void
clutter_container_child_set (ClutterContainer *container,
ClutterActor *actor,
const gchar *first_prop,
...)
{
GObjectClass *klass;
const gchar *name;
va_list var_args;
g_return_if_fail (CLUTTER_IS_CONTAINER (container));
g_return_if_fail (CLUTTER_IS_ACTOR (actor));
klass = G_OBJECT_GET_CLASS (container);
va_start (var_args, first_prop);
name = first_prop;
while (name)
{
GValue value = G_VALUE_INIT;
gchar *error = NULL;
GParamSpec *pspec;
pspec = clutter_container_class_find_child_property (klass, name);
if (!pspec)
{
g_warning ("%s: Containers of type '%s' have no child "
"property named '%s'",
G_STRLOC, G_OBJECT_TYPE_NAME (container), name);
break;
}
if (!(pspec->flags & G_PARAM_WRITABLE))
{
g_warning ("%s: Child property '%s' of the container '%s' "
"is not writable",
G_STRLOC, pspec->name, G_OBJECT_TYPE_NAME (container));
break;
}
G_VALUE_COLLECT_INIT (&value, G_PARAM_SPEC_VALUE_TYPE (pspec),
var_args, 0,
&error);
if (error)
{
/* we intentionally leak the GValue because it might
* be in an undefined state and calling g_value_unset()
* on it might crash
*/
g_warning ("%s: %s", G_STRLOC, error);
free (error);
break;
}
container_set_child_property (container, actor, &value, pspec);
g_value_unset (&value);
name = va_arg (var_args, gchar*);
}
va_end (var_args);
}
gboolean
_valist_to_parameter_list (GType the_type,
gpointer type_struct,
const gchar *first_property_name,
va_list args,
GParameter **params,
guint *n_params)
{
const gchar *name;
guint n_allocated_params;
g_return_val_if_fail (type_struct != NULL, FALSE);
*n_params = 0;
n_allocated_params = 16;
*params = g_new0 (GParameter, n_allocated_params);
name = first_property_name;
while (name)
{
gchar *error_msg = NULL;
GParamSpec *pspec = _g_type_struct_find_property (the_type, type_struct, name);
if (!pspec)
{
g_warning ("%s: type '%s' has no property named '%s'",
G_STRFUNC, g_type_name (the_type), name);
goto error;
}
if (*n_params >= n_allocated_params)
{
n_allocated_params += 16;
*params = g_renew (GParameter, *params, n_allocated_params);
memset (*params + sizeof (GParameter) * (n_allocated_params - 16),
0, sizeof (GParameter) * 16);
}
(*params)[*n_params].name = name;
G_VALUE_COLLECT_INIT (&(*params)[*n_params].value, pspec->value_type,
args, 0, &error_msg);
(*n_params)++;
if (error_msg)
{
g_warning ("%s: %s", G_STRFUNC, error_msg);
g_free (error_msg);
goto error;
}
name = va_arg (args, gchar*);
}
return TRUE;
error:
for (; *n_params > 0; --(*n_params))
g_value_unset (&(*params)[*n_params].value);
g_free (*params);
return FALSE;
}
static inline void
clutter_box_set_property_valist (ClutterBox *box,
ClutterActor *actor,
const gchar *first_property,
va_list var_args)
{
ClutterContainer *container = CLUTTER_CONTAINER (box);
ClutterBoxPrivate *priv = box->priv;
ClutterLayoutMeta *meta;
GObjectClass *klass;
const gchar *pname;
if (priv->manager == NULL)
return;
meta = clutter_layout_manager_get_child_meta (priv->manager,
container,
actor);
if (meta == NULL)
return;
klass = G_OBJECT_GET_CLASS (meta);
pname = first_property;
while (pname)
{
GValue value = { 0, };
GParamSpec *pspec;
gchar *error;
pspec = g_object_class_find_property (klass, pname);
if (pspec == NULL)
{
g_warning ("%s: the layout property '%s' for managers "
"of type '%s' (meta type '%s') does not exist",
G_STRLOC,
pname,
G_OBJECT_TYPE_NAME (priv->manager),
G_OBJECT_TYPE_NAME (meta));
break;
}
if (!(pspec->flags & G_PARAM_WRITABLE))
{
g_warning ("%s: the layout property '%s' for managers "
"of type '%s' (meta type '%s') is not writable",
G_STRLOC,
pspec->name,
G_OBJECT_TYPE_NAME (priv->manager),
G_OBJECT_TYPE_NAME (meta));
break;
}
G_VALUE_COLLECT_INIT (&value, G_PARAM_SPEC_VALUE_TYPE (pspec),
var_args, 0,
&error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
break;
}
clutter_layout_manager_child_set_property (priv->manager,
container, actor,
pspec->name, &value);
g_value_unset (&value);
pname = va_arg (var_args, gchar*);
}
}
/**
* clutter_layout_manager_child_set:
* @manager: a #ClutterLayoutManager
* @container: a #ClutterContainer using @manager
* @actor: a #ClutterActor child of @container
* @first_property: the first property name
* @Varargs: a list of property name and value pairs
*
* Sets a list of properties and their values on the #ClutterLayoutMeta
* associated by @manager to a child of @container
*
* Languages bindings should use clutter_layout_manager_child_set_property()
* instead
*
* Since: 1.2
*/
void
clutter_layout_manager_child_set (ClutterLayoutManager *manager,
ClutterContainer *container,
ClutterActor *actor,
const gchar *first_property,
...)
{
ClutterLayoutMeta *meta;
GObjectClass *klass;
const gchar *pname;
va_list var_args;
g_return_if_fail (CLUTTER_IS_LAYOUT_MANAGER (manager));
g_return_if_fail (CLUTTER_IS_CONTAINER (container));
g_return_if_fail (CLUTTER_IS_ACTOR (actor));
g_return_if_fail (first_property != NULL);
meta = get_child_meta (manager, container, actor);
if (meta == NULL)
{
g_warning ("Layout managers of type '%s' do not support "
"layout metadata",
g_type_name (G_OBJECT_TYPE (manager)));
return;
}
klass = G_OBJECT_GET_CLASS (meta);
va_start (var_args, first_property);
pname = first_property;
while (pname)
{
GValue value = { 0, };
GParamSpec *pspec;
gchar *error;
gboolean res;
pspec = g_object_class_find_property (klass, pname);
if (pspec == NULL)
{
g_warning ("%s: Layout managers of type '%s' have no layout "
"property named '%s'",
G_STRLOC, G_OBJECT_TYPE_NAME (manager), pname);
break;
}
G_VALUE_COLLECT_INIT (&value, G_PARAM_SPEC_VALUE_TYPE (pspec),
var_args, 0,
&error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
break;
}
res = layout_set_property_internal (manager, G_OBJECT (meta),
pspec,
&value);
g_value_unset (&value);
if (!res)
break;
pname = va_arg (var_args, gchar*);
}
va_end (var_args);
}
gboolean
peas_utils_valist_to_parameter_list (GType iface_type,
const gchar *first_property,
va_list args,
GParameter **params,
guint *n_params)
{
GPtrArray *type_structs;
const gchar *name;
guint n_allocated_params;
g_return_val_if_fail (G_TYPE_IS_INTERFACE (iface_type), FALSE);
type_structs = g_ptr_array_new ();
g_ptr_array_set_free_func (type_structs,
(GDestroyNotify) g_type_default_interface_unref);
add_all_interfaces (iface_type, type_structs);
*n_params = 0;
n_allocated_params = 16;
*params = g_new0 (GParameter, n_allocated_params);
name = first_property;
while (name)
{
gchar *error_msg = NULL;
GParamSpec *pspec = find_param_spec_in_interfaces (type_structs, name);
if (!pspec)
{
g_warning ("%s: type '%s' has no property named '%s'",
G_STRFUNC, g_type_name (iface_type), name);
goto error;
}
if (*n_params >= n_allocated_params)
{
n_allocated_params += 16;
*params = g_renew (GParameter, *params, n_allocated_params);
memset (*params + (n_allocated_params - 16),
0, sizeof (GParameter) * 16);
}
(*params)[*n_params].name = name;
G_VALUE_COLLECT_INIT (&(*params)[*n_params].value, pspec->value_type,
args, 0, &error_msg);
(*n_params)++;
if (error_msg)
{
g_warning ("%s: %s", G_STRFUNC, error_msg);
g_free (error_msg);
goto error;
}
name = va_arg (args, gchar*);
}
g_ptr_array_unref (type_structs);
return TRUE;
error:
for (; *n_params > 0; --(*n_params))
g_value_unset (&(*params)[*n_params].value);
g_free (*params);
g_ptr_array_unref (type_structs);
return FALSE;
}
