| /* GIO - GLib Input, Output and Streaming Library |
| * |
| * Copyright (C) 2006-2007 Red Hat, Inc. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General |
| * Public License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
| * Boston, MA 02111-1307, USA. |
| * |
| * Author: Alexander Larsson <alexl@redhat.com> |
| */ |
| |
| #include <config.h> |
| |
| #include "gfileicon.h" |
| #include "gsimpleasyncresult.h" |
| |
| #include "gioalias.h" |
| |
| /** |
| * SECTION:gfileicon |
| * @short_description: Icons pointing to an image file |
| * @include: gio.h |
| * @see_also: #GIcon, #GLoadableIcon |
| * |
| * #GFileIcon specifies an icon by pointing to an image file |
| * to be used as icon. |
| * |
| **/ |
| |
| static void g_file_icon_icon_iface_init (GIconIface *iface); |
| static void g_file_icon_loadable_icon_iface_init (GLoadableIconIface *iface); |
| static void g_file_icon_load_async (GLoadableIcon *icon, |
| int size, |
| GCancellable *cancellable, |
| GAsyncReadyCallback callback, |
| gpointer user_data); |
| |
| struct _GFileIcon |
| { |
| GObject parent_instance; |
| |
| GFile *file; |
| }; |
| |
| struct _GFileIconClass |
| { |
| GObjectClass parent_class; |
| }; |
| |
| G_DEFINE_TYPE_WITH_CODE (GFileIcon, g_file_icon, G_TYPE_OBJECT, |
| G_IMPLEMENT_INTERFACE (G_TYPE_ICON, |
| g_file_icon_icon_iface_init); |
| G_IMPLEMENT_INTERFACE (G_TYPE_LOADABLE_ICON, |
| g_file_icon_loadable_icon_iface_init); |
| ) |
| |
| static void |
| g_file_icon_finalize (GObject *object) |
| { |
| GFileIcon *icon; |
| |
| icon = G_FILE_ICON (object); |
| |
| g_object_unref (icon->file); |
| |
| if (G_OBJECT_CLASS (g_file_icon_parent_class)->finalize) |
| (*G_OBJECT_CLASS (g_file_icon_parent_class)->finalize) (object); |
| } |
| |
| static void |
| g_file_icon_class_init (GFileIconClass *klass) |
| { |
| GObjectClass *gobject_class = G_OBJECT_CLASS (klass); |
| |
| gobject_class->finalize = g_file_icon_finalize; |
| } |
| |
| static void |
| g_file_icon_init (GFileIcon *file) |
| { |
| } |
| |
| /** |
| * g_file_icon_new: |
| * @file: a #GFile. |
| * |
| * Creates a new icon for a file. |
| * |
| * Returns: a #GIcon for the given @file, or %NULL on error. |
| **/ |
| GIcon * |
| g_file_icon_new (GFile *file) |
| { |
| GFileIcon *icon; |
| |
| g_return_val_if_fail (G_IS_FILE (file), NULL); |
| |
| icon = g_object_new (G_TYPE_FILE_ICON, NULL); |
| icon->file = g_object_ref (file); |
| |
| return G_ICON (icon); |
| } |
| |
| /** |
| * g_file_icon_get_file: |
| * @icon: a #GIcon. |
| * |
| * Gets the #GFile associated with the given @icon. |
| * |
| * Returns: a #GFile, or %NULL. |
| **/ |
| GFile * |
| g_file_icon_get_file (GFileIcon *icon) |
| { |
| g_return_val_if_fail (G_IS_FILE_ICON (icon), NULL); |
| |
| return icon->file; |
| } |
| |
| static guint |
| g_file_icon_hash (GIcon *icon) |
| { |
| GFileIcon *file_icon = G_FILE_ICON (icon); |
| |
| return g_file_hash (file_icon->file); |
| } |
| |
| static gboolean |
| g_file_icon_equal (GIcon *icon1, |
| GIcon *icon2) |
| { |
| GFileIcon *file1 = G_FILE_ICON (icon1); |
| GFileIcon *file2 = G_FILE_ICON (icon2); |
| |
| return g_file_equal (file1->file, file2->file); |
| } |
| |
| |
| static void |
| g_file_icon_icon_iface_init (GIconIface *iface) |
| { |
| iface->hash = g_file_icon_hash; |
| iface->equal = g_file_icon_equal; |
| } |
| |
| |
| static GInputStream * |
| g_file_icon_load (GLoadableIcon *icon, |
| int size, |
| char **type, |
| GCancellable *cancellable, |
| GError **error) |
| { |
| GFileInputStream *stream; |
| GFileIcon *file_icon = G_FILE_ICON (icon); |
| |
| stream = g_file_read (file_icon->file, |
| cancellable, |
| error); |
| |
| return G_INPUT_STREAM (stream); |
| } |
| |
| typedef struct { |
| GLoadableIcon *icon; |
| GAsyncReadyCallback callback; |
| gpointer user_data; |
| } LoadData; |
| |
| static void |
| load_data_free (LoadData *data) |
| { |
| g_object_unref (data->icon); |
| g_free (data); |
| } |
| |
| static void |
| load_async_callback (GObject *source_object, |
| GAsyncResult *res, |
| gpointer user_data) |
| { |
| GFileInputStream *stream; |
| GError *error = NULL; |
| GSimpleAsyncResult *simple; |
| LoadData *data = user_data; |
| |
| stream = g_file_read_finish (G_FILE (source_object), res, &error); |
| |
| if (stream == NULL) |
| { |
| simple = g_simple_async_result_new_from_error (G_OBJECT (data->icon), |
| data->callback, |
| data->user_data, |
| error); |
| g_error_free (error); |
| } |
| else |
| { |
| simple = g_simple_async_result_new (G_OBJECT (data->icon), |
| data->callback, |
| data->user_data, |
| g_file_icon_load_async); |
| |
| g_simple_async_result_set_op_res_gpointer (simple, |
| stream, |
| g_object_unref); |
| } |
| |
| |
| g_simple_async_result_complete (simple); |
| |
| load_data_free (data); |
| } |
| |
| static void |
| g_file_icon_load_async (GLoadableIcon *icon, |
| int size, |
| GCancellable *cancellable, |
| GAsyncReadyCallback callback, |
| gpointer user_data) |
| { |
| GFileIcon *file_icon = G_FILE_ICON (icon); |
| LoadData *data; |
| |
| data = g_new0 (LoadData, 1); |
| data->icon = g_object_ref (icon); |
| data->callback = callback; |
| data->user_data = user_data; |
| |
| g_file_read_async (file_icon->file, 0, |
| cancellable, |
| load_async_callback, data); |
| |
| } |
| |
| static GInputStream * |
| g_file_icon_load_finish (GLoadableIcon *icon, |
| GAsyncResult *res, |
| char **type, |
| GError **error) |
| { |
| GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res); |
| gpointer op; |
| |
| g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == g_file_icon_load_async); |
| |
| if (type) |
| *type = NULL; |
| |
| op = g_simple_async_result_get_op_res_gpointer (simple); |
| if (op) |
| return g_object_ref (op); |
| |
| return NULL; |
| } |
| |
| static void |
| g_file_icon_loadable_icon_iface_init (GLoadableIconIface *iface) |
| { |
| iface->load = g_file_icon_load; |
| iface->load_async = g_file_icon_load_async; |
| iface->load_finish = g_file_icon_load_finish; |
| } |
| |
| #define __G_FILE_ICON_C__ |
| #include "gioaliasdef.c" |