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[path] Add GValue transform functions from and to G_TYPE_STRING

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Transform functions allow the use of g_value_transform() to cast
GValues. It's very handy to have casts to and from G_TYPE_STRING as it
allows generic serialization and parsing of GTypes.

Reviewed-by: Emmanuele Bassi <ebassi@linux.intel.com>
This commit is contained in:
Damien Lespiau 2009-10-06 00:49:40 +01:00
parent 8605073edb
commit 19c6879960
1 changed files with 35 additions and 1 deletions
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36
clutter/clutter-path.c
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@ -87,7 +87,12 @@
#include "clutter-bezier.h"
#include "clutter-private.h"
G_DEFINE_TYPE (ClutterPath, clutter_path, G_TYPE_INITIALLY_UNOWNED);
static void clutter_path_register_transforms (GType type);
G_DEFINE_TYPE_WITH_CODE (ClutterPath,
clutter_path,
G_TYPE_INITIALLY_UNOWNED,
clutter_path_register_transforms (g_define_type_id));
#define CLUTTER_PATH_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_PATH, \
@ -210,6 +215,35 @@ clutter_path_init (ClutterPath *self)
self->priv = CLUTTER_PATH_GET_PRIVATE (self);
}
static void
clutter_value_transform_path_string (const GValue *src,
GValue *dest)
{
gchar *string = clutter_path_get_description (src->data[0].v_pointer);
g_value_take_string (dest, string);
}
static void
clutter_value_transform_string_path (const GValue *src,
GValue *dest)
{
ClutterPath *new_path;
new_path = clutter_path_new_with_description (g_value_get_string (src));
g_value_take_object (dest, new_path);
}
static void
clutter_path_register_transforms (GType type)
{
g_value_register_transform_func (type, G_TYPE_STRING,
clutter_value_transform_path_string);
g_value_register_transform_func (G_TYPE_STRING, type,
clutter_value_transform_string_path);
}
static void
clutter_path_finalize (GObject *object)
{