1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
28 #include "gtkaccellabel.h"
29 #include "gtkmarshalers.h"
30 #include "gtkradiomenuitem.h"
31 #include "gtkprivate.h"
42 static void gtk_radio_menu_item_class_init (GtkRadioMenuItemClass *klass);
43 static void gtk_radio_menu_item_init (GtkRadioMenuItem *radio_menu_item);
44 static void gtk_radio_menu_item_destroy (GtkObject *object);
45 static void gtk_radio_menu_item_activate (GtkMenuItem *menu_item);
46 static void gtk_radio_menu_item_set_property (GObject *object,
50 static void gtk_radio_menu_item_get_property (GObject *object,
55 static GtkCheckMenuItemClass *parent_class = NULL;
57 static guint group_changed_signal = 0;
60 gtk_radio_menu_item_get_type (void)
62 static GType radio_menu_item_type = 0;
64 if (!radio_menu_item_type)
66 static const GTypeInfo radio_menu_item_info =
68 sizeof (GtkRadioMenuItemClass),
70 NULL, /* base_finalize */
71 (GClassInitFunc) gtk_radio_menu_item_class_init,
72 NULL, /* class_finalize */
73 NULL, /* class_data */
74 sizeof (GtkRadioMenuItem),
76 (GInstanceInitFunc) gtk_radio_menu_item_init,
79 radio_menu_item_type =
80 g_type_register_static (GTK_TYPE_CHECK_MENU_ITEM, "GtkRadioMenuItem",
81 &radio_menu_item_info, 0);
84 return radio_menu_item_type;
88 gtk_radio_menu_item_new (GSList *group)
90 GtkRadioMenuItem *radio_menu_item;
92 radio_menu_item = g_object_new (GTK_TYPE_RADIO_MENU_ITEM, NULL);
94 gtk_radio_menu_item_set_group (radio_menu_item, group);
96 return GTK_WIDGET (radio_menu_item);
100 gtk_radio_menu_item_set_property (GObject *object,
105 GtkRadioMenuItem *radio_menu_item;
107 radio_menu_item = GTK_RADIO_MENU_ITEM (object);
114 if (G_VALUE_HOLDS_OBJECT (value))
115 slist = gtk_radio_menu_item_get_group ((GtkRadioMenuItem*) g_value_get_object (value));
118 gtk_radio_menu_item_set_group (radio_menu_item, slist);
121 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
127 gtk_radio_menu_item_get_property (GObject *object,
132 GtkRadioMenuItem *radio_menu_item;
134 radio_menu_item = GTK_RADIO_MENU_ITEM (object);
139 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
145 gtk_radio_menu_item_set_group (GtkRadioMenuItem *radio_menu_item,
148 GtkWidget *old_group_singleton = NULL;
149 GtkWidget *new_group_singleton = NULL;
151 g_return_if_fail (GTK_IS_RADIO_MENU_ITEM (radio_menu_item));
152 g_return_if_fail (!g_slist_find (group, radio_menu_item));
154 if (radio_menu_item->group)
158 radio_menu_item->group = g_slist_remove (radio_menu_item->group, radio_menu_item);
160 if (radio_menu_item->group && !radio_menu_item->group->next)
161 old_group_singleton = g_object_ref (radio_menu_item->group->data);
163 for (slist = radio_menu_item->group; slist; slist = slist->next)
165 GtkRadioMenuItem *tmp_item;
167 tmp_item = slist->data;
169 tmp_item->group = radio_menu_item->group;
173 if (group && !group->next)
174 new_group_singleton = g_object_ref (group->data);
176 radio_menu_item->group = g_slist_prepend (group, radio_menu_item);
182 for (slist = group; slist; slist = slist->next)
184 GtkRadioMenuItem *tmp_item;
186 tmp_item = slist->data;
188 tmp_item->group = radio_menu_item->group;
193 GTK_CHECK_MENU_ITEM (radio_menu_item)->active = TRUE;
194 /* gtk_widget_set_state (GTK_WIDGET (radio_menu_item), GTK_STATE_ACTIVE);
198 g_object_ref (radio_menu_item);
200 g_object_notify (G_OBJECT (radio_menu_item), "group");
201 g_signal_emit (radio_menu_item, group_changed_signal, 0);
202 if (old_group_singleton)
204 g_signal_emit (old_group_singleton, group_changed_signal, 0);
205 g_object_unref (old_group_singleton);
207 if (new_group_singleton)
209 g_signal_emit (new_group_singleton, group_changed_signal, 0);
210 g_object_unref (new_group_singleton);
213 g_object_unref (radio_menu_item);
217 gtk_radio_menu_item_new_with_label (GSList *group,
220 GtkWidget *radio_menu_item;
221 GtkWidget *accel_label;
223 radio_menu_item = gtk_radio_menu_item_new (group);
224 accel_label = gtk_accel_label_new (label);
225 gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);
226 gtk_container_add (GTK_CONTAINER (radio_menu_item), accel_label);
227 gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label), radio_menu_item);
228 gtk_widget_show (accel_label);
230 return radio_menu_item;
235 * gtk_radio_menu_item_new_with_mnemonic:
236 * @group: group the radio menu item is inside
237 * @label: the text of the button, with an underscore in front of the
239 * @returns: a new #GtkRadioMenuItem
241 * Creates a new #GtkRadioMenuItem containing a label. The label
242 * will be created using gtk_label_new_with_mnemonic(), so underscores
243 * in @label indicate the mnemonic for the menu item.
246 gtk_radio_menu_item_new_with_mnemonic (GSList *group,
249 GtkWidget *radio_menu_item;
250 GtkWidget *accel_label;
252 radio_menu_item = gtk_radio_menu_item_new (group);
253 accel_label = g_object_new (GTK_TYPE_ACCEL_LABEL, NULL);
254 gtk_label_set_text_with_mnemonic (GTK_LABEL (accel_label), label);
255 gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);
257 gtk_container_add (GTK_CONTAINER (radio_menu_item), accel_label);
258 gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label), radio_menu_item);
259 gtk_widget_show (accel_label);
261 return radio_menu_item;
265 * gtk_radio_menu_item_new_from_widget:
266 * @group: An existing #GtkRadioMenuItem
268 * Creates a new #GtkRadioMenuItem adding it to the same group as @group.
270 * Return value: The new #GtkRadioMenuItem
275 gtk_radio_menu_item_new_from_widget (GtkRadioMenuItem *group)
279 g_return_val_if_fail (GTK_IS_RADIO_MENU_ITEM (group), NULL);
282 list = gtk_radio_menu_item_get_group (group);
284 return gtk_radio_menu_item_new (list);
288 * gtk_radio_menu_item_new_with_mnemonic_from_widget:
289 * @group: An existing #GtkRadioMenuItem
290 * @label: the text of the button, with an underscore in front of the
293 * Creates a new GtkRadioMenuItem containing a label. The label will be
294 * created using gtk_label_new_with_mnemonic(), so underscores in label
295 * indicate the mnemonic for the menu item.
297 * The new #GtkRadioMenuItem is added to the same group as @group.
299 * Return value: The new #GtkRadioMenuItem
304 gtk_radio_menu_item_new_with_mnemonic_from_widget (GtkRadioMenuItem *group,
309 g_return_val_if_fail (GTK_IS_RADIO_MENU_ITEM (group), NULL);
312 list = gtk_radio_menu_item_get_group (group);
314 return gtk_radio_menu_item_new_with_mnemonic (list, label);
318 * gtk_radio_menu_item_new_with_label_from_widget:
319 * @group: an existing #GtkRadioMenuItem
320 * @label: the text for the label
322 * Creates a new GtkRadioMenuItem whose child is a simple GtkLabel.
323 * The new #GtkRadioMenuItem is added to the same group as @group.
325 * Return value: The new #GtkRadioMenuItem
330 gtk_radio_menu_item_new_with_label_from_widget (GtkRadioMenuItem *group,
335 g_return_val_if_fail (GTK_IS_RADIO_MENU_ITEM (group), NULL);
338 list = gtk_radio_menu_item_get_group (group);
340 return gtk_radio_menu_item_new_with_label (list, label);
344 gtk_radio_menu_item_get_group (GtkRadioMenuItem *radio_menu_item)
346 g_return_val_if_fail (GTK_IS_RADIO_MENU_ITEM (radio_menu_item), NULL);
348 return radio_menu_item->group;
353 gtk_radio_menu_item_class_init (GtkRadioMenuItemClass *klass)
355 GObjectClass *gobject_class;
356 GtkObjectClass *object_class;
357 GtkMenuItemClass *menu_item_class;
359 gobject_class = G_OBJECT_CLASS (klass);
360 object_class = GTK_OBJECT_CLASS (klass);
361 menu_item_class = GTK_MENU_ITEM_CLASS (klass);
363 parent_class = g_type_class_peek_parent (klass);
365 gobject_class->set_property = gtk_radio_menu_item_set_property;
366 gobject_class->get_property = gtk_radio_menu_item_get_property;
368 g_object_class_install_property (gobject_class,
370 g_param_spec_object ("group",
372 P_("The radio menu item whose group this widget belongs to."),
373 GTK_TYPE_RADIO_MENU_ITEM,
374 GTK_PARAM_WRITABLE));
376 object_class->destroy = gtk_radio_menu_item_destroy;
378 menu_item_class->activate = gtk_radio_menu_item_activate;
381 * GtkStyle::group-changed:
382 * @style: the object which received the signal
384 * Emitted when the group of radio menu items that a radio menu item belongs
385 * to changes. This is emitted when a radio menu item switches from
386 * being alone to being part of a group of 2 or more menu items, or
387 * vice-versa, and when a buttton is moved from one group of 2 or
388 * more menu items ton a different one, but not when the composition
389 * of the group that a menu item belongs to changes.
393 group_changed_signal = g_signal_new ("group-changed",
394 G_OBJECT_CLASS_TYPE (object_class),
396 G_STRUCT_OFFSET (GtkRadioMenuItemClass, group_changed),
398 _gtk_marshal_VOID__VOID,
403 gtk_radio_menu_item_init (GtkRadioMenuItem *radio_menu_item)
405 radio_menu_item->group = g_slist_prepend (NULL, radio_menu_item);
406 gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (radio_menu_item), TRUE);
410 gtk_radio_menu_item_destroy (GtkObject *object)
412 GtkWidget *old_group_singleton = NULL;
413 GtkRadioMenuItem *radio_menu_item;
414 GtkRadioMenuItem *tmp_menu_item;
416 gboolean was_in_group;
418 g_return_if_fail (GTK_IS_RADIO_MENU_ITEM (object));
420 radio_menu_item = GTK_RADIO_MENU_ITEM (object);
422 was_in_group = radio_menu_item->group && radio_menu_item->group->next;
424 radio_menu_item->group = g_slist_remove (radio_menu_item->group,
426 if (radio_menu_item->group && !radio_menu_item->group->next)
427 old_group_singleton = radio_menu_item->group->data;
429 tmp_list = radio_menu_item->group;
433 tmp_menu_item = tmp_list->data;
434 tmp_list = tmp_list->next;
436 tmp_menu_item->group = radio_menu_item->group;
439 /* this radio menu item is no longer in the group */
440 radio_menu_item->group = NULL;
442 if (old_group_singleton)
443 g_signal_emit (old_group_singleton, group_changed_signal, 0);
445 g_signal_emit (radio_menu_item, group_changed_signal, 0);
447 if (GTK_OBJECT_CLASS (parent_class)->destroy)
448 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
452 gtk_radio_menu_item_activate (GtkMenuItem *menu_item)
454 GtkRadioMenuItem *radio_menu_item;
455 GtkCheckMenuItem *check_menu_item;
456 GtkCheckMenuItem *tmp_menu_item;
460 g_return_if_fail (GTK_IS_RADIO_MENU_ITEM (menu_item));
462 radio_menu_item = GTK_RADIO_MENU_ITEM (menu_item);
463 check_menu_item = GTK_CHECK_MENU_ITEM (menu_item);
466 if (check_menu_item->active)
468 tmp_menu_item = NULL;
469 tmp_list = radio_menu_item->group;
473 tmp_menu_item = tmp_list->data;
474 tmp_list = tmp_list->next;
476 if (tmp_menu_item->active && (tmp_menu_item != check_menu_item))
479 tmp_menu_item = NULL;
485 check_menu_item->active = !check_menu_item->active;
491 check_menu_item->active = !check_menu_item->active;
493 tmp_list = radio_menu_item->group;
496 tmp_menu_item = tmp_list->data;
497 tmp_list = tmp_list->next;
499 if (tmp_menu_item->active && (tmp_menu_item != check_menu_item))
501 gtk_menu_item_activate (GTK_MENU_ITEM (tmp_menu_item));
508 gtk_check_menu_item_toggled (check_menu_item);
510 gtk_widget_queue_draw (GTK_WIDGET (radio_menu_item));
513 #define __GTK_RADIO_MENU_ITEM_C__
514 #include "gtkaliasdef.c"