Merge remote branch 'gvdb/master'
[platform/upstream/glib.git] / gio / gloadableicon.c
index 569065e..2e53ce3 100644 (file)
  * Author: Alexander Larsson <alexl@redhat.com>
  */
 
-#include <config.h>
-
+#include "config.h"
+#include "gasyncresult.h"
 #include "gsimpleasyncresult.h"
+#include "gicon.h"
 #include "gloadableicon.h"
 #include "glibintl.h"
 
+
+/**
+ * SECTION:gloadableicon
+ * @short_description: Loadable Icons
+ * @include: gio/gio.h
+ * @see_also: #GIcon, #GThemedIcon
+ * 
+ * Extends the #GIcon interface and adds the ability to 
+ * load icons from streams.
+ **/
+
 static void          g_loadable_icon_real_load_async  (GLoadableIcon        *icon,
                                                       int                   size,
                                                       GCancellable         *cancellable,
@@ -35,71 +47,37 @@ static GInputStream *g_loadable_icon_real_load_finish (GLoadableIcon        *ico
                                                       GAsyncResult         *res,
                                                       char                **type,
                                                       GError              **error);
-static void          g_loadable_icon_base_init        (gpointer              g_class);
-static void          g_loadable_icon_class_init       (gpointer              g_class,
-                                                      gpointer              class_data);
-
-GType
-g_loadable_icon_get_type (void)
-{
-  static GType loadable_icon_type = 0;
-
-  if (! loadable_icon_type)
-    {
-      static const GTypeInfo loadable_icon_info =
-       {
-        sizeof (GLoadableIconIface), /* class_size */
-       g_loadable_icon_base_init,   /* base_init */
-       NULL,           /* base_finalize */
-       g_loadable_icon_class_init,
-       NULL,           /* class_finalize */
-       NULL,           /* class_data */
-       0,
-       0,              /* n_preallocs */
-       NULL
-      };
-
-      loadable_icon_type =
-       g_type_register_static (G_TYPE_INTERFACE, I_("GLoadableIcon"),
-                               &loadable_icon_info, 0);
 
-      g_type_interface_add_prerequisite (loadable_icon_type, G_TYPE_ICON);
-    }
-
-  return loadable_icon_type;
-}
+typedef GLoadableIconIface GLoadableIconInterface;
+G_DEFINE_INTERFACE(GLoadableIcon, g_loadable_icon, G_TYPE_ICON)
 
 static void
-g_loadable_icon_class_init (gpointer g_class,
-                           gpointer class_data)
+g_loadable_icon_default_init (GLoadableIconIface *iface)
 {
-  GLoadableIconIface *iface = g_class;
-
   iface->load_async = g_loadable_icon_real_load_async;
   iface->load_finish = g_loadable_icon_real_load_finish;
 }
 
-static void
-g_loadable_icon_base_init (gpointer g_class)
-{
-}
-
 /**
  * g_loadable_icon_load:
- * @icon:
- * @size:
- * @type:
+ * @icon: a #GLoadableIcon.
+ * @size: an integer.
+ * @type:  a location to store the type of the loaded icon, %NULL to ignore.
  * @cancellable: optional #GCancellable object, %NULL to ignore. 
  * @error: a #GError location to store the error occuring, or %NULL to 
  * ignore.
- * Returns: 
+ * 
+ * Loads a loadable icon. For the asynchronous version of this function, 
+ * see g_loadable_icon_load_async().
+ * 
+ * Returns: (transfer full): a #GInputStream to read the icon from.
  **/
 GInputStream *
-g_loadable_icon_load (GLoadableIcon        *icon,
-                     int                   size,
-                     char                **type,
-                     GCancellable         *cancellable,
-                     GError              **error)
+g_loadable_icon_load (GLoadableIcon  *icon,
+                     int             size,
+                     char          **type,
+                     GCancellable   *cancellable,
+                     GError        **error)
 {
   GLoadableIconIface *iface;
 
@@ -108,25 +86,26 @@ g_loadable_icon_load (GLoadableIcon        *icon,
   iface = G_LOADABLE_ICON_GET_IFACE (icon);
 
   return (* iface->load) (icon, size, type, cancellable, error);
-  
 }
 
 /**
  * g_loadable_icon_load_async:
- * @icon:
- * @size:
- * @cancellable: optional #GCancellable object, %NULL to ignore. @callback:
- * @user_data:
- * 
- * Loads an icon asynchronously.
+ * @icon: a #GLoadableIcon.
+ * @size: an integer.
+ * @cancellable: optional #GCancellable object, %NULL to ignore. 
+ * @callback: a #GAsyncReadyCallback to call when the request is satisfied
+ * @user_data: the data to pass to callback function
  * 
+ * Loads an icon asynchronously. To finish this function, see 
+ * g_loadable_icon_load_finish(). For the synchronous, blocking 
+ * version of this function, see g_loadable_icon_load().
  **/
 void
-g_loadable_icon_load_async (GLoadableIcon        *icon,
-                           int                   size,
-                           GCancellable         *cancellable,
-                           GAsyncReadyCallback   callback,
-                           gpointer              user_data)
+g_loadable_icon_load_async (GLoadableIcon       *icon,
+                            int                  size,
+                            GCancellable        *cancellable,
+                            GAsyncReadyCallback  callback,
+                            gpointer             user_data)
 {
   GLoadableIconIface *iface;
   
@@ -135,23 +114,25 @@ g_loadable_icon_load_async (GLoadableIcon        *icon,
   iface = G_LOADABLE_ICON_GET_IFACE (icon);
 
   (* iface->load_async) (icon, size, cancellable, callback, user_data);
-  
 }
 
 /**
  * g_loadable_icon_load_finish:
- * @icon:
- * @res:
- * @type:
+ * @icon: a #GLoadableIcon.
+ * @res: a #GAsyncResult.
+ * @type: a location to store the type of the loaded icon, %NULL to ignore.
  * @error: a #GError location to store the error occuring, or %NULL to 
  * ignore.
- * Returns:
+ * 
+ * Finishes an asynchronous icon load started in g_loadable_icon_load_async().
+ * 
+ * Returns: (transfer full): a #GInputStream to read the icon from.
  **/
 GInputStream *
-g_loadable_icon_load_finish (GLoadableIcon        *icon,
-                            GAsyncResult         *res,
-                            char                **type,
-                            GError              **error)
+g_loadable_icon_load_finish (GLoadableIcon  *icon,
+                            GAsyncResult   *res,
+                            char          **type,
+                            GError        **error)
 {
   GLoadableIconIface *iface;
   
@@ -168,7 +149,6 @@ g_loadable_icon_load_finish (GLoadableIcon        *icon,
   iface = G_LOADABLE_ICON_GET_IFACE (icon);
 
   return (* iface->load_finish) (icon, res, type, error);
-  
 }
 
 /********************************************
@@ -192,8 +172,8 @@ load_data_free (LoadData *data)
 
 static void
 load_async_thread (GSimpleAsyncResult *res,
-                  GObject *object,
-                  GCancellable *cancellable)
+                  GObject            *object,
+                  GCancellable       *cancellable)
 {
   GLoadableIconIface *iface;
   GInputStream *stream;
@@ -221,11 +201,11 @@ load_async_thread (GSimpleAsyncResult *res,
 
 
 static void
-g_loadable_icon_real_load_async (GLoadableIcon        *icon,
-                                int                   size,
-                                GCancellable         *cancellable,
-                                GAsyncReadyCallback   callback,
-                                gpointer              user_data)
+g_loadable_icon_real_load_async (GLoadableIcon       *icon,
+                                int                  size,
+                                GCancellable        *cancellable,
+                                GAsyncReadyCallback  callback,
+                                gpointer             user_data)
 {
   GSimpleAsyncResult *res;
   LoadData *data;
@@ -246,7 +226,7 @@ g_loadable_icon_real_load_finish (GLoadableIcon        *icon,
   GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res);
   LoadData *data;
 
-  g_assert (g_simple_async_result_get_source_tag (simple) == g_loadable_icon_real_load_async);
+  g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == g_loadable_icon_real_load_async);
 
   data = g_simple_async_result_get_op_res_gpointer (simple);