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 <string.h> /* memset */
29 #include "gdk/gdkkeysyms.h"
30 #include "gtkaccelmap.h"
31 #include "gtkbindings.h"
35 #include "gtkmenuitem.h"
36 #include "gtksignal.h"
37 #include "gtkwindow.h"
39 #include "gtkvscrollbar.h"
40 #include "gtksettings.h"
44 #define MENU_ITEM_CLASS(w) GTK_MENU_ITEM_GET_CLASS (w)
45 #define MENU_NEEDS_RESIZE(m) GTK_MENU_SHELL (m)->menu_flag
47 #define SUBMENU_NAV_REGION_PADDING 2
48 #define SUBMENU_NAV_HYSTERESIS_TIMEOUT 333
50 #define MENU_SCROLL_STEP 10
51 #define MENU_SCROLL_ARROW_HEIGHT 16
52 #define MENU_SCROLL_FAST_ZONE 4
53 #define MENU_SCROLL_TIMEOUT1 150
54 #define MENU_SCROLL_TIMEOUT2 50
56 typedef struct _GtkMenuAttachData GtkMenuAttachData;
58 struct _GtkMenuAttachData
60 GtkWidget *attach_widget;
61 GtkMenuDetachFunc detacher;
69 static void gtk_menu_class_init (GtkMenuClass *klass);
70 static void gtk_menu_init (GtkMenu *menu);
71 static void gtk_menu_set_property (GObject *object,
75 static void gtk_menu_get_property (GObject *object,
79 static void gtk_menu_destroy (GtkObject *object);
80 static void gtk_menu_finalize (GObject *object);
81 static void gtk_menu_realize (GtkWidget *widget);
82 static void gtk_menu_unrealize (GtkWidget *widget);
83 static void gtk_menu_size_request (GtkWidget *widget,
84 GtkRequisition *requisition);
85 static void gtk_menu_size_allocate (GtkWidget *widget,
86 GtkAllocation *allocation);
87 static void gtk_menu_paint (GtkWidget *widget,
88 GdkEventExpose *expose);
89 static void gtk_menu_show (GtkWidget *widget);
90 static gboolean gtk_menu_expose (GtkWidget *widget,
91 GdkEventExpose *event);
92 static gboolean gtk_menu_key_press (GtkWidget *widget,
94 static gboolean gtk_menu_motion_notify (GtkWidget *widget,
95 GdkEventMotion *event);
96 static gboolean gtk_menu_enter_notify (GtkWidget *widget,
97 GdkEventCrossing *event);
98 static gboolean gtk_menu_leave_notify (GtkWidget *widget,
99 GdkEventCrossing *event);
100 static void gtk_menu_scroll_to (GtkMenu *menu,
102 static void gtk_menu_stop_scrolling (GtkMenu *menu);
103 static gboolean gtk_menu_scroll_timeout (gpointer data);
104 static void gtk_menu_scroll_item_visible (GtkMenuShell *menu_shell,
105 GtkWidget *menu_item);
106 static void gtk_menu_select_item (GtkMenuShell *menu_shell,
107 GtkWidget *menu_item);
108 static void gtk_menu_real_insert (GtkMenuShell *menu_shell,
111 static void gtk_menu_scrollbar_changed (GtkAdjustment *adjustment,
113 static void gtk_menu_handle_scrolling (GtkMenu *menu,
115 static void gtk_menu_set_tearoff_hints (GtkMenu *menu,
118 static void gtk_menu_stop_navigating_submenu (GtkMenu *menu);
119 static gboolean gtk_menu_stop_navigating_submenu_cb (gpointer user_data);
120 static gboolean gtk_menu_navigating_submenu (GtkMenu *menu,
123 static void gtk_menu_set_submenu_navigation_region (GtkMenu *menu,
124 GtkMenuItem *menu_item,
125 GdkEventCrossing *event);
127 static void gtk_menu_deactivate (GtkMenuShell *menu_shell);
128 static void gtk_menu_show_all (GtkWidget *widget);
129 static void gtk_menu_hide_all (GtkWidget *widget);
130 static void gtk_menu_position (GtkMenu *menu);
131 static void gtk_menu_reparent (GtkMenu *menu,
132 GtkWidget *new_parent,
134 static void gtk_menu_remove (GtkContainer *menu,
137 static void gtk_menu_update_title (GtkMenu *menu);
139 static void menu_grab_transfer_window_destroy (GtkMenu *menu);
140 static GdkWindow *menu_grab_transfer_window_get (GtkMenu *menu);
142 static void _gtk_menu_refresh_accel_paths (GtkMenu *menu,
143 gboolean group_changed);
145 static GtkMenuShellClass *parent_class = NULL;
146 static const gchar *attach_data_key = "gtk-menu-attach-data";
149 gtk_menu_get_type (void)
151 static GtkType menu_type = 0;
155 static const GtkTypeInfo menu_info =
159 sizeof (GtkMenuClass),
160 (GtkClassInitFunc) gtk_menu_class_init,
161 (GtkObjectInitFunc) gtk_menu_init,
162 /* reserved_1 */ NULL,
163 /* reserved_2 */ NULL,
164 (GtkClassInitFunc) NULL,
167 menu_type = gtk_type_unique (gtk_menu_shell_get_type (), &menu_info);
174 gtk_menu_class_init (GtkMenuClass *class)
176 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
177 GtkObjectClass *object_class = GTK_OBJECT_CLASS (class);
178 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
179 GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
180 GtkMenuShellClass *menu_shell_class = GTK_MENU_SHELL_CLASS (class);
181 GtkBindingSet *binding_set;
183 parent_class = g_type_class_peek_parent (class);
185 gobject_class->finalize = gtk_menu_finalize;
186 gobject_class->set_property = gtk_menu_set_property;
187 gobject_class->get_property = gtk_menu_get_property;
189 g_object_class_install_property (gobject_class,
191 g_param_spec_string ("tearoff-title",
193 _("A title that may be displayed by the window manager when this menu is torn-off."),
195 G_PARAM_READABLE | G_PARAM_WRITABLE));
196 object_class->destroy = gtk_menu_destroy;
198 widget_class->realize = gtk_menu_realize;
199 widget_class->unrealize = gtk_menu_unrealize;
200 widget_class->size_request = gtk_menu_size_request;
201 widget_class->size_allocate = gtk_menu_size_allocate;
202 widget_class->show = gtk_menu_show;
203 widget_class->expose_event = gtk_menu_expose;
204 widget_class->key_press_event = gtk_menu_key_press;
205 widget_class->motion_notify_event = gtk_menu_motion_notify;
206 widget_class->show_all = gtk_menu_show_all;
207 widget_class->hide_all = gtk_menu_hide_all;
208 widget_class->enter_notify_event = gtk_menu_enter_notify;
209 widget_class->leave_notify_event = gtk_menu_leave_notify;
211 container_class->remove = gtk_menu_remove;
213 menu_shell_class->submenu_placement = GTK_LEFT_RIGHT;
214 menu_shell_class->deactivate = gtk_menu_deactivate;
215 menu_shell_class->select_item = gtk_menu_select_item;
216 menu_shell_class->insert = gtk_menu_real_insert;
218 binding_set = gtk_binding_set_by_class (class);
219 gtk_binding_entry_add_signal (binding_set,
222 GTK_TYPE_MENU_DIRECTION_TYPE,
224 gtk_binding_entry_add_signal (binding_set,
227 GTK_TYPE_MENU_DIRECTION_TYPE,
229 gtk_binding_entry_add_signal (binding_set,
232 GTK_TYPE_MENU_DIRECTION_TYPE,
234 gtk_binding_entry_add_signal (binding_set,
237 GTK_TYPE_MENU_DIRECTION_TYPE,
239 gtk_binding_entry_add_signal (binding_set,
242 GTK_TYPE_MENU_DIRECTION_TYPE,
243 GTK_MENU_DIR_PARENT);
244 gtk_binding_entry_add_signal (binding_set,
247 GTK_TYPE_MENU_DIRECTION_TYPE,
248 GTK_MENU_DIR_PARENT);
249 gtk_binding_entry_add_signal (binding_set,
252 GTK_TYPE_MENU_DIRECTION_TYPE,
254 gtk_binding_entry_add_signal (binding_set,
257 GTK_TYPE_MENU_DIRECTION_TYPE,
263 gtk_menu_set_property (GObject *object,
270 menu = GTK_MENU (object);
274 case PROP_TEAROFF_TITLE:
275 gtk_menu_set_title (menu, g_value_get_string (value));
278 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
284 gtk_menu_get_property (GObject *object,
291 menu = GTK_MENU (object);
295 case PROP_TEAROFF_TITLE:
296 g_value_set_string (value, gtk_menu_get_title (menu));
299 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
305 gtk_menu_window_event (GtkWidget *window,
309 gboolean handled = FALSE;
311 gtk_widget_ref (window);
312 gtk_widget_ref (menu);
317 case GDK_KEY_RELEASE:
318 handled = gtk_widget_event (menu, event);
324 gtk_widget_unref (window);
325 gtk_widget_unref (menu);
331 gtk_menu_init (GtkMenu *menu)
333 menu->parent_menu_item = NULL;
334 menu->old_active_menu_item = NULL;
335 menu->accel_group = NULL;
336 menu->position_func = NULL;
337 menu->position_func_data = NULL;
338 menu->toggle_size = 0;
340 menu->toplevel = g_object_connect (gtk_widget_new (GTK_TYPE_WINDOW,
341 "type", GTK_WINDOW_POPUP,
344 "signal::event", gtk_menu_window_event, menu,
345 "signal::destroy", gtk_widget_destroyed, &menu->toplevel,
347 gtk_window_set_policy (GTK_WINDOW (menu->toplevel),
349 gtk_window_set_mnemonic_modifier (GTK_WINDOW (menu->toplevel), 0);
351 /* Refloat the menu, so that reference counting for the menu isn't
352 * affected by it being a child of the toplevel
354 GTK_WIDGET_SET_FLAGS (menu, GTK_FLOATING);
355 menu->needs_destruction_ref_count = TRUE;
357 menu->view_window = NULL;
358 menu->bin_window = NULL;
360 menu->scroll_offset = 0;
361 menu->scroll_step = 0;
362 menu->timeout_id = 0;
363 menu->scroll_fast = FALSE;
365 menu->tearoff_window = NULL;
366 menu->tearoff_hbox = NULL;
367 menu->torn_off = FALSE;
368 menu->tearoff_active = FALSE;
369 menu->tearoff_adjustment = NULL;
370 menu->tearoff_scrollbar = NULL;
372 menu->upper_arrow_visible = FALSE;
373 menu->lower_arrow_visible = FALSE;
374 menu->upper_arrow_prelight = FALSE;
375 menu->lower_arrow_prelight = FALSE;
377 MENU_NEEDS_RESIZE (menu) = TRUE;
381 gtk_menu_destroy (GtkObject *object)
384 GtkMenuAttachData *data;
386 g_return_if_fail (GTK_IS_MENU (object));
388 menu = GTK_MENU (object);
390 gtk_menu_stop_scrolling (menu);
392 data = gtk_object_get_data (object, attach_data_key);
394 gtk_menu_detach (menu);
396 gtk_menu_stop_navigating_submenu (menu);
398 if (menu->old_active_menu_item)
400 gtk_widget_unref (menu->old_active_menu_item);
401 menu->old_active_menu_item = NULL;
404 /* Add back the reference count for being a child */
405 if (menu->needs_destruction_ref_count)
407 menu->needs_destruction_ref_count = FALSE;
408 gtk_object_ref (object);
411 if (menu->accel_group)
413 g_object_unref (menu->accel_group);
414 menu->accel_group = NULL;
418 gtk_widget_destroy (menu->toplevel);
419 if (menu->tearoff_window)
420 gtk_widget_destroy (menu->tearoff_window);
422 GTK_OBJECT_CLASS (parent_class)->destroy (object);
426 gtk_menu_finalize (GObject *object)
428 GtkMenu *menu = GTK_MENU (object);
430 g_free (menu->accel_path);
432 G_OBJECT_CLASS (parent_class)->finalize (object);
436 gtk_menu_attach_to_widget (GtkMenu *menu,
437 GtkWidget *attach_widget,
438 GtkMenuDetachFunc detacher)
440 GtkMenuAttachData *data;
442 g_return_if_fail (GTK_IS_MENU (menu));
443 g_return_if_fail (GTK_IS_WIDGET (attach_widget));
444 g_return_if_fail (detacher != NULL);
446 /* keep this function in sync with gtk_widget_set_parent()
449 data = gtk_object_get_data (GTK_OBJECT (menu), attach_data_key);
452 g_warning ("gtk_menu_attach_to_widget(): menu already attached to %s",
453 gtk_type_name (GTK_OBJECT_TYPE (data->attach_widget)));
457 gtk_object_ref (GTK_OBJECT (menu));
458 gtk_object_sink (GTK_OBJECT (menu));
460 data = g_new (GtkMenuAttachData, 1);
461 data->attach_widget = attach_widget;
462 data->detacher = detacher;
463 gtk_object_set_data (GTK_OBJECT (menu), attach_data_key, data);
465 if (GTK_WIDGET_STATE (menu) != GTK_STATE_NORMAL)
466 gtk_widget_set_state (GTK_WIDGET (menu), GTK_STATE_NORMAL);
468 /* we don't need to set the style here, since
469 * we are a toplevel widget.
472 /* Fallback title for menu comes from attach widget */
473 gtk_menu_update_title (menu);
477 gtk_menu_get_attach_widget (GtkMenu *menu)
479 GtkMenuAttachData *data;
481 g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
483 data = gtk_object_get_data (GTK_OBJECT (menu), attach_data_key);
485 return data->attach_widget;
490 gtk_menu_detach (GtkMenu *menu)
492 GtkMenuAttachData *data;
494 g_return_if_fail (GTK_IS_MENU (menu));
496 /* keep this function in sync with gtk_widget_unparent()
498 data = gtk_object_get_data (GTK_OBJECT (menu), attach_data_key);
501 g_warning ("gtk_menu_detach(): menu is not attached");
504 gtk_object_remove_data (GTK_OBJECT (menu), attach_data_key);
506 data->detacher (data->attach_widget, menu);
508 if (GTK_WIDGET_REALIZED (menu))
509 gtk_widget_unrealize (GTK_WIDGET (menu));
513 /* Fallback title for menu comes from attach widget */
514 gtk_menu_update_title (menu);
516 gtk_widget_unref (GTK_WIDGET (menu));
520 gtk_menu_remove (GtkContainer *container,
524 g_return_if_fail (GTK_IS_MENU (container));
525 g_return_if_fail (GTK_IS_MENU_ITEM (widget));
527 menu = GTK_MENU (container);
529 /* Clear out old_active_menu_item if it matches the item we are removing
531 if (menu->old_active_menu_item == widget)
533 gtk_widget_unref (menu->old_active_menu_item);
534 menu->old_active_menu_item = NULL;
537 GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
544 return GTK_WIDGET (gtk_type_new (gtk_menu_get_type ()));
548 gtk_menu_real_insert (GtkMenuShell *menu_shell,
552 if (GTK_WIDGET_REALIZED (menu_shell))
553 gtk_widget_set_parent_window (child, GTK_MENU (menu_shell)->bin_window);
555 GTK_MENU_SHELL_CLASS (parent_class)->insert (menu_shell, child, position);
559 gtk_menu_tearoff_bg_copy (GtkMenu *menu)
564 widget = GTK_WIDGET (menu);
570 GdkGCValues gc_values;
572 menu->tearoff_active = FALSE;
573 menu->saved_scroll_offset = menu->scroll_offset;
575 gc_values.subwindow_mode = GDK_INCLUDE_INFERIORS;
576 gc = gdk_gc_new_with_values (widget->window,
577 &gc_values, GDK_GC_SUBWINDOW);
579 gdk_window_get_size (menu->tearoff_window->window, &width, &height);
581 pixmap = gdk_pixmap_new (menu->tearoff_window->window,
586 gdk_draw_pixmap (pixmap, gc,
587 menu->tearoff_window->window,
591 gtk_widget_set_usize (menu->tearoff_window,
595 gdk_window_set_back_pixmap (menu->tearoff_window->window, pixmap, FALSE);
596 gdk_pixmap_unref (pixmap);
601 popup_grab_on_window (GdkWindow *window,
602 guint32 activate_time)
604 if ((gdk_pointer_grab (window, TRUE,
605 GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
606 GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK |
607 GDK_POINTER_MOTION_MASK,
608 NULL, NULL, activate_time) == 0))
610 if (gdk_keyboard_grab (window, TRUE,
615 gdk_pointer_ungrab (activate_time);
624 gtk_menu_popup (GtkMenu *menu,
625 GtkWidget *parent_menu_shell,
626 GtkWidget *parent_menu_item,
627 GtkMenuPositionFunc func,
630 guint32 activate_time)
633 GtkWidget *xgrab_shell;
635 GdkEvent *current_event;
636 GtkMenuShell *menu_shell;
638 g_return_if_fail (GTK_IS_MENU (menu));
640 widget = GTK_WIDGET (menu);
641 menu_shell = GTK_MENU_SHELL (menu);
643 menu_shell->parent_menu_shell = parent_menu_shell;
645 /* Find the last viewable ancestor, and make an X grab on it
647 parent = GTK_WIDGET (menu);
651 gboolean viewable = TRUE;
652 GtkWidget *tmp = parent;
656 if (!GTK_WIDGET_MAPPED (tmp))
665 xgrab_shell = parent;
667 parent = GTK_MENU_SHELL (parent)->parent_menu_shell;
670 /* We want to receive events generated when we map the menu; unfortunately,
671 * since there is probably already an implicit grab in place from the
672 * button that the user used to pop up the menu, we won't receive then --
673 * in particular, the EnterNotify when the menu pops up under the pointer.
675 * If we are grabbing on a parent menu shell, no problem; just grab on
676 * that menu shell first before popping up the window with owner_events = TRUE.
678 * When grabbing on the menu itself, things get more convuluted - we
679 * we do an explicit grab on a specially created window with
680 * owner_events = TRUE, which we override further down with a grab
681 * on the menu. (We can't grab on the menu until it is mapped; we
682 * probably could just leave the grab on the other window, with a
683 * little reorganization of the code in gtkmenu*).
685 if (xgrab_shell == widget)
687 if (popup_grab_on_window (xgrab_shell->window, activate_time))
688 GTK_MENU_SHELL (xgrab_shell)->have_xgrab = TRUE;
692 GdkWindow *transfer_window;
694 xgrab_shell = widget;
695 transfer_window = menu_grab_transfer_window_get (menu);
696 if (popup_grab_on_window (transfer_window, activate_time))
697 GTK_MENU_SHELL (xgrab_shell)->have_xgrab = TRUE;
700 if (!GTK_MENU_SHELL (xgrab_shell)->have_xgrab)
702 /* We failed to make our pointer/keyboard grab. Rather than leaving the user
703 * with a stuck up window, we just abort here. Presumably the user will
706 menu_shell->parent_menu_shell = NULL;
710 menu_shell->active = TRUE;
711 menu_shell->button = button;
713 /* If we are popping up the menu from something other than, a button
714 * press then, as a heuristic, we ignore enter events for the menu
715 * until we get a MOTION_NOTIFY.
718 current_event = gtk_get_current_event ();
721 if ((current_event->type != GDK_BUTTON_PRESS) &&
722 (current_event->type != GDK_ENTER_NOTIFY))
723 menu_shell->ignore_enter = TRUE;
728 gtk_menu_tearoff_bg_copy (menu);
730 gtk_menu_reparent (menu, menu->toplevel, FALSE);
733 menu->parent_menu_item = parent_menu_item;
734 menu->position_func = func;
735 menu->position_func_data = data;
736 menu_shell->activate_time = activate_time;
738 gtk_menu_position (menu);
740 /* We need to show the menu _here_ because code expects to be
741 * able to tell if the menu is onscreen by looking at the
742 * GTK_WIDGET_VISIBLE (menu)
744 gtk_widget_show (GTK_WIDGET (menu));
745 gtk_widget_show (menu->toplevel);
747 gtk_menu_scroll_to (menu, menu->scroll_offset);
749 if (xgrab_shell == widget)
750 popup_grab_on_window (widget->window, activate_time); /* Should always succeed */
752 gtk_grab_add (GTK_WIDGET (menu));
756 gtk_menu_popdown (GtkMenu *menu)
758 GtkMenuShell *menu_shell;
760 g_return_if_fail (GTK_IS_MENU (menu));
762 menu_shell = GTK_MENU_SHELL (menu);
764 menu_shell->parent_menu_shell = NULL;
765 menu_shell->active = FALSE;
766 menu_shell->ignore_enter = FALSE;
768 gtk_menu_stop_scrolling (menu);
770 gtk_menu_stop_navigating_submenu (menu);
772 if (menu_shell->active_menu_item)
774 if (menu->old_active_menu_item)
775 gtk_widget_unref (menu->old_active_menu_item);
776 menu->old_active_menu_item = menu_shell->active_menu_item;
777 gtk_widget_ref (menu->old_active_menu_item);
780 gtk_menu_shell_deselect (menu_shell);
782 /* The X Grab, if present, will automatically be removed when we hide
784 gtk_widget_hide (menu->toplevel);
789 gdk_window_get_size (menu->tearoff_window->window, &width, &height);
790 gtk_widget_set_usize (menu->tearoff_window,
794 if (GTK_BIN (menu->toplevel)->child)
796 gtk_menu_reparent (menu, menu->tearoff_hbox, TRUE);
800 /* We popped up the menu from the tearoff, so we need to
801 * release the grab - we aren't actually hiding the menu.
803 if (menu_shell->have_xgrab)
805 gdk_pointer_ungrab (GDK_CURRENT_TIME);
806 gdk_keyboard_ungrab (GDK_CURRENT_TIME);
810 /* gtk_menu_popdown is called each time a menu item is selected from
811 * a torn off menu. Only scroll back to the saved position if the
812 * non-tearoff menu was popped down.
814 if (!menu->tearoff_active)
815 gtk_menu_scroll_to (menu, menu->saved_scroll_offset);
816 menu->tearoff_active = TRUE;
819 gtk_widget_hide (GTK_WIDGET (menu));
821 menu_shell->have_xgrab = FALSE;
822 gtk_grab_remove (GTK_WIDGET (menu));
824 menu_grab_transfer_window_destroy (menu);
828 gtk_menu_get_active (GtkMenu *menu)
833 g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
835 if (!menu->old_active_menu_item)
838 children = GTK_MENU_SHELL (menu)->children;
842 child = children->data;
843 children = children->next;
845 if (GTK_BIN (child)->child)
850 menu->old_active_menu_item = child;
851 if (menu->old_active_menu_item)
852 gtk_widget_ref (menu->old_active_menu_item);
855 return menu->old_active_menu_item;
859 gtk_menu_set_active (GtkMenu *menu,
865 g_return_if_fail (GTK_IS_MENU (menu));
867 tmp_list = g_list_nth (GTK_MENU_SHELL (menu)->children, index);
870 child = tmp_list->data;
871 if (GTK_BIN (child)->child)
873 if (menu->old_active_menu_item)
874 gtk_widget_unref (menu->old_active_menu_item);
875 menu->old_active_menu_item = child;
876 gtk_widget_ref (menu->old_active_menu_item);
882 gtk_menu_set_accel_group (GtkMenu *menu,
883 GtkAccelGroup *accel_group)
885 g_return_if_fail (GTK_IS_MENU (menu));
887 if (menu->accel_group != accel_group)
889 if (menu->accel_group)
890 gtk_accel_group_unref (menu->accel_group);
891 menu->accel_group = accel_group;
892 if (menu->accel_group)
893 gtk_accel_group_ref (menu->accel_group);
894 _gtk_menu_refresh_accel_paths (menu, TRUE);
899 gtk_menu_get_accel_group (GtkMenu *menu)
901 g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
903 return menu->accel_group;
907 * gtk_menu_set_accel_path
908 * @menu: a valid #GtkMenu
909 * @accel_path: a valid accelerator path
911 * Sets an accelerator path for this menu from which accelerator paths
912 * for its immediate children, its menu items, can be constructed.
913 * The main purpose of this function is to spare the programmer the
914 * inconvenience of having to call gtk_menu_item_set_accel_path() on
915 * each menu item that should support runtime user changable accelerators.
916 * Instead, by just calling gtk_menu_set_accel_path() on their parent,
917 * each menu item of this menu, that contains a label describing its purpose,
918 * automatically gets an accel path assigned. For example, a menu containing
919 * menu items "New" and "Exit", will, after
920 * <literal>gtk_menu_set_accel_path (menu, "<Gnumeric-Sheet>/File");</literal>
921 * has been called, assign its items the accel paths:
922 * <literal>"<Gnumeric-Sheet>/File/New"</literal> and <literal>"<Gnumeric-Sheet>/File/Exit"</literal>.
923 * Assigning accel paths to menu items then enables the user to change
924 * their accelerators at runtime. More details about accelerator paths
925 * and their default setups can be found at gtk_accel_map_add_entry().
928 gtk_menu_set_accel_path (GtkMenu *menu,
929 const gchar *accel_path)
931 g_return_if_fail (GTK_IS_MENU (menu));
933 g_return_if_fail (accel_path[0] == '<' && strchr (accel_path, '/')); /* simplistic check */
935 g_free (menu->accel_path);
936 menu->accel_path = g_strdup (accel_path);
937 if (menu->accel_path)
938 _gtk_menu_refresh_accel_paths (menu, FALSE);
943 gboolean group_changed;
947 refresh_accel_paths_foreach (GtkWidget *widget,
950 AccelPropagation *prop = data;
952 if (GTK_IS_MENU_ITEM (widget)) /* should always be true */
953 _gtk_menu_item_refresh_accel_path (GTK_MENU_ITEM (widget),
954 prop->menu->accel_path,
955 prop->menu->accel_group,
956 prop->group_changed);
960 _gtk_menu_refresh_accel_paths (GtkMenu *menu,
961 gboolean group_changed)
963 g_return_if_fail (GTK_IS_MENU (menu));
965 if (menu->accel_path && menu->accel_group)
967 AccelPropagation prop;
970 prop.group_changed = group_changed;
971 gtk_container_foreach (GTK_CONTAINER (menu),
972 refresh_accel_paths_foreach,
978 gtk_menu_reposition (GtkMenu *menu)
980 g_return_if_fail (GTK_IS_MENU (menu));
982 if (GTK_WIDGET_DRAWABLE (menu) && !menu->torn_off)
983 gtk_menu_position (menu);
987 gtk_menu_scrollbar_changed (GtkAdjustment *adjustment,
990 g_return_if_fail (GTK_IS_MENU (menu));
992 if (adjustment->value != menu->scroll_offset)
993 gtk_menu_scroll_to (menu, adjustment->value);
997 gtk_menu_set_tearoff_hints (GtkMenu *menu,
1000 GdkGeometry geometry_hints;
1002 if (!menu->tearoff_window)
1005 if (GTK_WIDGET_VISIBLE (menu->tearoff_scrollbar))
1007 gtk_widget_size_request (menu->tearoff_scrollbar, NULL);
1008 width += menu->tearoff_scrollbar->requisition.width;
1011 geometry_hints.min_width = width;
1012 geometry_hints.max_width = width;
1014 geometry_hints.min_height = 0;
1015 geometry_hints.max_height = GTK_WIDGET (menu)->requisition.height;
1016 gtk_window_set_geometry_hints (GTK_WINDOW (menu->tearoff_window),
1019 GDK_HINT_MAX_SIZE|GDK_HINT_MIN_SIZE);
1023 gtk_menu_update_title (GtkMenu *menu)
1025 if (menu->tearoff_window)
1028 GtkWidget *attach_widget;
1030 title = gtk_menu_get_title (menu);
1033 attach_widget = gtk_menu_get_attach_widget (menu);
1034 if (GTK_IS_MENU_ITEM (attach_widget))
1036 GtkWidget *child = GTK_BIN (attach_widget)->child;
1037 if (GTK_IS_LABEL (child))
1038 title = gtk_label_get_text (GTK_LABEL (child));
1043 gtk_window_set_title (GTK_WINDOW (menu->tearoff_window), title);
1048 gtk_menu_set_tearoff_state (GtkMenu *menu,
1053 g_return_if_fail (GTK_IS_MENU (menu));
1055 if (menu->torn_off != torn_off)
1057 menu->torn_off = torn_off;
1058 menu->tearoff_active = torn_off;
1062 if (GTK_WIDGET_VISIBLE (menu))
1063 gtk_menu_popdown (menu);
1065 if (!menu->tearoff_window)
1067 menu->tearoff_window = g_object_connect (gtk_widget_new (GTK_TYPE_WINDOW,
1068 "type", GTK_WINDOW_TOPLEVEL,
1070 "signal::destroy", gtk_widget_destroyed, &menu->tearoff_window,
1072 gtk_window_set_type_hint (GTK_WINDOW (menu->tearoff_window),
1073 GDK_WINDOW_TYPE_HINT_MENU);
1074 gtk_window_set_mnemonic_modifier (GTK_WINDOW (menu->tearoff_window), 0);
1075 gtk_widget_set_app_paintable (menu->tearoff_window, TRUE);
1076 gtk_signal_connect (GTK_OBJECT (menu->tearoff_window),
1078 GTK_SIGNAL_FUNC (gtk_menu_window_event),
1081 gtk_menu_update_title (menu);
1083 gtk_widget_realize (menu->tearoff_window);
1085 gdk_window_set_decorations (menu->tearoff_window->window,
1088 GDK_DECOR_MINIMIZE |
1089 GDK_DECOR_MAXIMIZE);
1090 gtk_window_set_resizable (GTK_WINDOW (menu->tearoff_window), FALSE);
1092 menu->tearoff_hbox = gtk_hbox_new (FALSE, FALSE);
1093 gtk_container_add (GTK_CONTAINER (menu->tearoff_window), menu->tearoff_hbox);
1095 gdk_window_get_size (GTK_WIDGET (menu)->window, &width, &height);
1096 menu->tearoff_adjustment =
1097 GTK_ADJUSTMENT (gtk_adjustment_new (0,
1099 GTK_WIDGET (menu)->requisition.height,
1103 g_object_connect (GTK_OBJECT (menu->tearoff_adjustment),
1104 "signal::value_changed", gtk_menu_scrollbar_changed, menu,
1106 menu->tearoff_scrollbar = gtk_vscrollbar_new (menu->tearoff_adjustment);
1108 gtk_box_pack_end (GTK_BOX (menu->tearoff_hbox),
1109 menu->tearoff_scrollbar,
1112 if (menu->tearoff_adjustment->upper > height)
1113 gtk_widget_show (menu->tearoff_scrollbar);
1115 gtk_widget_show (menu->tearoff_hbox);
1118 gtk_menu_reparent (menu, menu->tearoff_hbox, FALSE);
1120 gdk_window_get_size (GTK_WIDGET (menu)->window, &width, NULL);
1122 /* Update menu->requisition
1124 gtk_widget_size_request (GTK_WIDGET (menu), NULL);
1126 gtk_menu_set_tearoff_hints (menu, width);
1128 gtk_widget_realize (menu->tearoff_window);
1129 gtk_menu_position (menu);
1131 gtk_widget_show (GTK_WIDGET (menu));
1132 gtk_widget_show (menu->tearoff_window);
1134 gtk_menu_scroll_to (menu, 0);
1139 gtk_widget_hide (menu->tearoff_window);
1140 gtk_menu_reparent (menu, menu->toplevel, FALSE);
1146 * gtk_menu_get_tearoff_state:
1149 * Returns whether the menu is torn off. See
1150 * gtk_menu_set_tearoff_state ().
1152 * Return value: %TRUE if the menu is currently torn off.
1155 gtk_menu_get_tearoff_state (GtkMenu *menu)
1157 g_return_val_if_fail (GTK_IS_MENU (menu), FALSE);
1159 return menu->torn_off;
1163 * gtk_menu_set_title:
1165 * @title: a string containing the title for the menu.
1167 * Sets the title string for the menu. The title is displayed when the menu
1168 * is shown as a tearoff menu.
1171 gtk_menu_set_title (GtkMenu *menu,
1174 g_return_if_fail (GTK_IS_MENU (menu));
1177 g_object_set_data_full (G_OBJECT (menu), "gtk-menu-title",
1178 g_strdup (title), (GtkDestroyNotify) g_free);
1180 g_object_set_data (G_OBJECT (menu), "gtk-menu-title", NULL);
1182 gtk_menu_update_title (menu);
1183 g_object_notify (G_OBJECT (menu), "tearoff_title");
1187 * gtk_menu_get_title:
1190 * Returns the title of the menu. See gtk_menu_set_title().
1192 * Return value: the title of the menu, or %NULL if the menu has no
1195 G_CONST_RETURN gchar *
1196 gtk_menu_get_title (GtkMenu *menu)
1198 g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
1200 return gtk_object_get_data (GTK_OBJECT (menu), "gtk-menu-title");
1204 gtk_menu_reorder_child (GtkMenu *menu,
1208 GtkMenuShell *menu_shell;
1209 g_return_if_fail (GTK_IS_MENU (menu));
1210 g_return_if_fail (GTK_IS_MENU_ITEM (child));
1211 menu_shell = GTK_MENU_SHELL (menu);
1212 if (g_list_find (menu_shell->children, child))
1214 menu_shell->children = g_list_remove (menu_shell->children, child);
1215 menu_shell->children = g_list_insert (menu_shell->children, child, position);
1216 if (GTK_WIDGET_VISIBLE (menu_shell))
1217 gtk_widget_queue_resize (GTK_WIDGET (menu_shell));
1222 gtk_menu_realize (GtkWidget *widget)
1224 GdkWindowAttr attributes;
1225 gint attributes_mask;
1231 g_return_if_fail (GTK_IS_MENU (widget));
1233 menu = GTK_MENU (widget);
1235 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1237 attributes.window_type = GDK_WINDOW_CHILD;
1238 attributes.x = widget->allocation.x;
1239 attributes.y = widget->allocation.y;
1240 attributes.width = widget->allocation.width;
1241 attributes.height = widget->allocation.height;
1242 attributes.wclass = GDK_INPUT_OUTPUT;
1243 attributes.visual = gtk_widget_get_visual (widget);
1244 attributes.colormap = gtk_widget_get_colormap (widget);
1246 attributes.event_mask = gtk_widget_get_events (widget);
1247 attributes.event_mask |= (GDK_EXPOSURE_MASK | GDK_KEY_PRESS_MASK |
1248 GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
1250 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1251 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
1252 gdk_window_set_user_data (widget->window, widget);
1254 border_width = GTK_CONTAINER (widget)->border_width;
1256 attributes.x = border_width + widget->style->xthickness;
1257 attributes.y = border_width + widget->style->ythickness;
1258 attributes.width = MAX (1, widget->allocation.width - attributes.x * 2);
1259 attributes.height = MAX (1, widget->allocation.height - attributes.y * 2);
1261 if (menu->upper_arrow_visible)
1263 attributes.y += MENU_SCROLL_ARROW_HEIGHT;
1264 attributes.height -= MENU_SCROLL_ARROW_HEIGHT;
1266 if (menu->lower_arrow_visible)
1267 attributes.height -= MENU_SCROLL_ARROW_HEIGHT;
1269 menu->view_window = gdk_window_new (widget->window, &attributes, attributes_mask);
1270 gdk_window_set_user_data (menu->view_window, menu);
1274 attributes.height = MAX (1, widget->requisition.height - (border_width + widget->style->ythickness) * 2);
1276 menu->bin_window = gdk_window_new (menu->view_window, &attributes, attributes_mask);
1277 gdk_window_set_user_data (menu->bin_window, menu);
1279 children = GTK_MENU_SHELL (menu)->children;
1282 child = children->data;
1283 children = children->next;
1285 gtk_widget_set_parent_window (child, menu->bin_window);
1288 widget->style = gtk_style_attach (widget->style, widget->window);
1289 gtk_style_set_background (widget->style, menu->bin_window, GTK_STATE_NORMAL);
1290 gtk_style_set_background (widget->style, menu->view_window, GTK_STATE_NORMAL);
1291 gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
1293 gtk_menu_scroll_item_visible (GTK_MENU_SHELL (widget),
1294 GTK_MENU_SHELL (widget)->active_menu_item);
1296 gdk_window_show (menu->bin_window);
1297 gdk_window_show (menu->view_window);
1300 /* See notes in gtk_menu_popup() for information about the "grab transfer window"
1303 menu_grab_transfer_window_get (GtkMenu *menu)
1305 GdkWindow *window = g_object_get_data (G_OBJECT (menu), "gtk-menu-transfer-window");
1308 GdkWindowAttr attributes;
1309 gint attributes_mask;
1311 attributes.x = -100;
1312 attributes.y = -100;
1313 attributes.width = 10;
1314 attributes.height = 10;
1315 attributes.window_type = GDK_WINDOW_TEMP;
1316 attributes.wclass = GDK_INPUT_ONLY;
1317 attributes.override_redirect = TRUE;
1318 attributes.event_mask = 0;
1320 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR;
1322 window = gdk_window_new (NULL, &attributes, attributes_mask);
1323 gdk_window_set_user_data (window, menu);
1325 gdk_window_show (window);
1327 g_object_set_data (G_OBJECT (menu), "gtk-menu-transfer-window", window);
1334 menu_grab_transfer_window_destroy (GtkMenu *menu)
1336 GdkWindow *window = g_object_get_data (G_OBJECT (menu), "gtk-menu-transfer-window");
1339 gdk_window_set_user_data (window, NULL);
1340 gdk_window_destroy (window);
1341 g_object_set_data (G_OBJECT (menu), "gtk-menu-transfer-window", NULL);
1346 gtk_menu_unrealize (GtkWidget *widget)
1350 g_return_if_fail (GTK_IS_MENU (widget));
1352 menu = GTK_MENU (widget);
1354 menu_grab_transfer_window_destroy (menu);
1356 gdk_window_set_user_data (menu->view_window, NULL);
1357 gdk_window_destroy (menu->view_window);
1358 menu->view_window = NULL;
1360 gdk_window_set_user_data (menu->bin_window, NULL);
1361 gdk_window_destroy (menu->bin_window);
1362 menu->bin_window = NULL;
1364 (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
1368 gtk_menu_size_request (GtkWidget *widget,
1369 GtkRequisition *requisition)
1372 GtkMenuShell *menu_shell;
1375 guint max_toggle_size;
1376 guint max_accel_width;
1377 GtkRequisition child_requisition;
1379 g_return_if_fail (GTK_IS_MENU (widget));
1380 g_return_if_fail (requisition != NULL);
1382 menu = GTK_MENU (widget);
1383 menu_shell = GTK_MENU_SHELL (widget);
1385 requisition->width = 0;
1386 requisition->height = 0;
1388 max_toggle_size = 0;
1389 max_accel_width = 0;
1391 children = menu_shell->children;
1394 child = children->data;
1395 children = children->next;
1397 if (GTK_WIDGET_VISIBLE (child))
1401 /* It's important to size_request the child
1402 * before doing the toggle size request, in
1403 * case the toggle size request depends on the size
1404 * request of a child of the child (e.g. for ImageMenuItem)
1407 GTK_MENU_ITEM (child)->show_submenu_indicator = TRUE;
1408 gtk_widget_size_request (child, &child_requisition);
1410 requisition->width = MAX (requisition->width, child_requisition.width);
1411 requisition->height += child_requisition.height;
1413 gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child), &toggle_size);
1414 max_toggle_size = MAX (max_toggle_size, toggle_size);
1415 max_accel_width = MAX (max_accel_width, GTK_MENU_ITEM (child)->accelerator_width);
1419 requisition->width += max_toggle_size + max_accel_width;
1420 requisition->width += (GTK_CONTAINER (menu)->border_width +
1421 widget->style->xthickness) * 2;
1422 requisition->height += (GTK_CONTAINER (menu)->border_width +
1423 widget->style->ythickness) * 2;
1425 menu->toggle_size = max_toggle_size;
1427 /* If the requested width was different than the allocated width, we need to change
1428 * the geometry hints for the tear off window so that the window can actually be resized.
1429 * Don't resize the tearoff if it is not active, because it won't redraw (it is only a background pixmap).
1431 if ((requisition->width != GTK_WIDGET (menu)->allocation.width) && menu->tearoff_active)
1432 gtk_menu_set_tearoff_hints (menu, requisition->width);
1436 gtk_menu_size_allocate (GtkWidget *widget,
1437 GtkAllocation *allocation)
1440 GtkMenuShell *menu_shell;
1442 GtkAllocation child_allocation;
1447 g_return_if_fail (GTK_IS_MENU (widget));
1448 g_return_if_fail (allocation != NULL);
1450 menu = GTK_MENU (widget);
1451 menu_shell = GTK_MENU_SHELL (widget);
1453 widget->allocation = *allocation;
1455 x = GTK_CONTAINER (menu)->border_width + widget->style->xthickness;
1456 y = GTK_CONTAINER (menu)->border_width + widget->style->ythickness;
1458 width = MAX (1, allocation->width - x * 2);
1459 height = MAX (1, allocation->height - y * 2);
1461 if (menu->upper_arrow_visible && !menu->tearoff_active)
1463 y += MENU_SCROLL_ARROW_HEIGHT;
1464 height -= MENU_SCROLL_ARROW_HEIGHT;
1467 if (menu->lower_arrow_visible && !menu->tearoff_active)
1468 height -= MENU_SCROLL_ARROW_HEIGHT;
1470 if (GTK_WIDGET_REALIZED (widget))
1472 gdk_window_move_resize (widget->window,
1473 allocation->x, allocation->y,
1474 allocation->width, allocation->height);
1476 gdk_window_move_resize (menu->view_window,
1483 if (menu_shell->children)
1485 child_allocation.x = 0;
1486 child_allocation.y = 0;
1487 child_allocation.width = width;
1489 children = menu_shell->children;
1492 child = children->data;
1493 children = children->next;
1495 if (GTK_WIDGET_VISIBLE (child))
1497 GtkRequisition child_requisition;
1498 gtk_widget_get_child_requisition (child, &child_requisition);
1500 child_allocation.height = child_requisition.height;
1502 gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child),
1504 gtk_widget_size_allocate (child, &child_allocation);
1505 gtk_widget_queue_draw (child);
1507 child_allocation.y += child_allocation.height;
1511 /* Resize the item window */
1512 if (GTK_WIDGET_REALIZED (widget))
1514 gdk_window_resize (menu->bin_window,
1515 child_allocation.width,
1516 child_allocation.y);
1520 if (menu->tearoff_active)
1522 if (allocation->height >= widget->requisition.height)
1524 if (GTK_WIDGET_VISIBLE (menu->tearoff_scrollbar))
1526 gtk_widget_hide (menu->tearoff_scrollbar);
1527 gtk_menu_set_tearoff_hints (menu, allocation->width);
1528 gtk_widget_set_usize (menu->tearoff_window, -1, allocation->height);
1530 gtk_menu_scroll_to (menu, 0);
1535 menu->tearoff_adjustment->upper = widget->requisition.height;
1536 menu->tearoff_adjustment->page_size = allocation->height;
1538 if (menu->tearoff_adjustment->value + menu->tearoff_adjustment->page_size >
1539 menu->tearoff_adjustment->upper)
1542 value = menu->tearoff_adjustment->upper - menu->tearoff_adjustment->page_size;
1545 gtk_menu_scroll_to (menu, value);
1548 gtk_adjustment_changed (menu->tearoff_adjustment);
1550 if (!GTK_WIDGET_VISIBLE (menu->tearoff_scrollbar))
1552 gtk_widget_show (menu->tearoff_scrollbar);
1553 gtk_menu_set_tearoff_hints (menu, allocation->width);
1554 gtk_widget_set_usize (menu->tearoff_window, -1, allocation->height);
1562 gtk_menu_paint (GtkWidget *widget,
1563 GdkEventExpose *event)
1567 gint border_x, border_y;
1569 g_return_if_fail (GTK_IS_MENU (widget));
1571 menu = GTK_MENU (widget);
1573 border_x = GTK_CONTAINER (widget)->border_width + widget->style->xthickness;
1574 border_y = GTK_CONTAINER (widget)->border_width + widget->style->ythickness;
1575 gdk_window_get_size (widget->window, &width, &height);
1577 if (event->window == widget->window)
1579 gtk_paint_box (widget->style,
1583 NULL, widget, "menu",
1585 if (menu->upper_arrow_visible && !menu->tearoff_active)
1587 gtk_paint_box (widget->style,
1589 menu->upper_arrow_prelight ?
1590 GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
1592 NULL, widget, "menu",
1596 MENU_SCROLL_ARROW_HEIGHT);
1598 gtk_paint_arrow (widget->style,
1600 menu->upper_arrow_prelight ?
1601 GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
1603 NULL, widget, "menu",
1606 width / 2 - MENU_SCROLL_ARROW_HEIGHT / 2 + 1,
1608 MENU_SCROLL_ARROW_HEIGHT - 2 * border_y - 2,
1609 MENU_SCROLL_ARROW_HEIGHT - 2 * border_y - 2);
1612 if (menu->lower_arrow_visible && !menu->tearoff_active)
1614 gtk_paint_box (widget->style,
1616 menu->lower_arrow_prelight ?
1617 GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
1619 NULL, widget, "menu",
1621 height - border_y - MENU_SCROLL_ARROW_HEIGHT + 1,
1623 MENU_SCROLL_ARROW_HEIGHT);
1625 gtk_paint_arrow (widget->style,
1627 menu->lower_arrow_prelight ?
1628 GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
1630 NULL, widget, "menu",
1633 width / 2 - MENU_SCROLL_ARROW_HEIGHT / 2 + 1,
1634 height - MENU_SCROLL_ARROW_HEIGHT + 1,
1635 MENU_SCROLL_ARROW_HEIGHT - 2 * border_y - 2,
1636 MENU_SCROLL_ARROW_HEIGHT - 2 * border_y - 2);
1639 else if (event->window == menu->view_window)
1644 if (menu->scroll_offset < 0)
1645 gtk_paint_box (widget->style,
1649 NULL, widget, "menu",
1652 -menu->scroll_offset);
1654 menu_height = widget->requisition.height - 2*border_y;
1655 top_pos = height - 2*border_y - (menu->upper_arrow_visible ? MENU_SCROLL_ARROW_HEIGHT : 0);
1657 if (menu_height - menu->scroll_offset < top_pos)
1658 gtk_paint_box (widget->style,
1662 NULL, widget, "menu",
1664 menu_height - menu->scroll_offset,
1666 top_pos - (menu_height - menu->scroll_offset));
1671 gtk_menu_expose (GtkWidget *widget,
1672 GdkEventExpose *event)
1674 g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
1675 g_return_val_if_fail (event != NULL, FALSE);
1677 if (GTK_WIDGET_DRAWABLE (widget))
1679 gtk_menu_paint (widget, event);
1681 (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
1688 gtk_menu_show (GtkWidget *widget)
1690 GtkMenu *menu = GTK_MENU (widget);
1692 _gtk_menu_refresh_accel_paths (menu, FALSE);
1694 GTK_WIDGET_CLASS (parent_class)->show (widget);
1698 gtk_menu_key_press (GtkWidget *widget,
1701 GtkMenuShell *menu_shell;
1703 GtkAccelGroup *accel_group;
1704 gboolean delete = FALSE;
1705 gchar *accel = NULL;
1706 guint accel_key, accel_mods;
1708 g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
1709 g_return_val_if_fail (event != NULL, FALSE);
1711 menu_shell = GTK_MENU_SHELL (widget);
1712 menu = GTK_MENU (widget);
1713 accel_group = gtk_menu_get_accel_group (menu);
1715 gtk_menu_stop_navigating_submenu (menu);
1717 if (GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event))
1720 g_object_get (G_OBJECT (gtk_settings_get_default ()),
1721 "gtk-menu-bar-accel",
1728 GdkModifierType mods = 0;
1729 gboolean handled = FALSE;
1731 gtk_accelerator_parse (accel, &keyval, &mods);
1734 g_warning ("Failed to parse menu bar accelerator '%s'\n", accel);
1736 /* FIXME this is wrong, needs to be in the global accel resolution
1737 * thing, to properly consider i18n etc., but that probably requires
1738 * AccelGroup changes etc.
1740 if (event->keyval == keyval &&
1741 (mods & event->state) == mods)
1743 gtk_signal_emit_by_name (GTK_OBJECT (menu), "cancel");
1752 switch (event->keyval)
1763 accel_key = event->keyval;
1764 accel_mods = event->state & gtk_accelerator_get_default_mod_mask ();
1766 /* Modify the accelerators */
1767 if (menu_shell->active_menu_item &&
1768 GTK_BIN (menu_shell->active_menu_item)->child && /* no seperators */
1769 GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu == NULL && /* no submenus */
1771 (gtk_accelerator_valid (event->keyval, event->state) &&
1773 (accel_key >= GDK_F1 && accel_key <= GDK_F35)))))
1775 GtkWidget *menu_item = menu_shell->active_menu_item;
1776 gboolean replace_accels = TRUE;
1779 path = GTK_MENU_ITEM (menu_item)->accel_path;
1781 path = _gtk_widget_get_accel_path (menu_item);
1784 /* can't change accelerators on menu_items without paths
1785 * (basically, those items are accelerator-locked).
1787 /* g_print("item has no path, menu prefix: %s\n", menu->accel_path); */
1799 changed = gtk_accel_map_change_entry (path, accel_key, accel_mods, replace_accels);
1803 /* we failed, probably because this key is in use and
1806 /* g_print("failed to change\n"); */
1816 gtk_menu_motion_notify (GtkWidget *widget,
1817 GdkEventMotion *event)
1819 GtkWidget *menu_item;
1821 GtkMenuShell *menu_shell;
1823 gboolean need_enter;
1826 if (GTK_IS_MENU (widget))
1827 gtk_menu_handle_scrolling (GTK_MENU (widget), TRUE);
1829 /* We received the event for one of two reasons:
1831 * a) We are the active menu, and did gtk_grab_add()
1832 * b) The widget is a child of ours, and the event was propagated
1834 * Since for computation of navigation regions, we want the menu which
1835 * is the parent of the menu item, for a), we need to find that menu,
1836 * which may be different from 'widget'.
1838 menu_item = gtk_get_event_widget ((GdkEvent*) event);
1839 if (!menu_item || !GTK_IS_MENU_ITEM (menu_item) ||
1840 !_gtk_menu_item_is_selectable (menu_item) ||
1841 !GTK_IS_MENU (menu_item->parent))
1844 menu_shell = GTK_MENU_SHELL (menu_item->parent);
1845 menu = GTK_MENU (menu_shell);
1847 need_enter = (menu->navigation_region != NULL || menu_shell->ignore_enter);
1849 /* Check to see if we are within an active submenu's navigation region
1851 if (gtk_menu_navigating_submenu (menu, event->x_root, event->y_root))
1856 /* The menu is now sensitive to enter events on its items, but
1857 * was previously sensitive. So we fake an enter event.
1861 menu_shell->ignore_enter = FALSE;
1863 gdk_window_get_size (event->window, &width, &height);
1864 if (event->x >= 0 && event->x < width &&
1865 event->y >= 0 && event->y < height)
1867 GdkEvent send_event;
1869 memset (&send_event, 0, sizeof (send_event));
1870 send_event.crossing.type = GDK_ENTER_NOTIFY;
1871 send_event.crossing.window = event->window;
1872 send_event.crossing.time = event->time;
1873 send_event.crossing.send_event = TRUE;
1874 send_event.crossing.x_root = event->x_root;
1875 send_event.crossing.y_root = event->y_root;
1876 send_event.crossing.x = event->x;
1877 send_event.crossing.y = event->y;
1879 /* We send the event to 'widget', the currently active menu,
1880 * instead of 'menu', the menu that the pointer is in. This
1881 * will ensure that the event will be ignored unless the
1882 * menuitem is a child of the active menu or some parent
1883 * menu of the active menu.
1885 return gtk_widget_event (widget, &send_event);
1893 gtk_menu_scroll_timeout (gpointer data)
1898 gint view_width, view_height;
1900 GDK_THREADS_ENTER ();
1902 menu = GTK_MENU (data);
1903 widget = GTK_WIDGET (menu);
1905 offset = menu->scroll_offset + menu->scroll_step;
1907 /* If we scroll upward and the non-visible top part
1908 * is smaller than the scroll arrow it would be
1909 * pretty stupid to show the arrow and taking more
1910 * screen space than just scrolling to the top.
1912 if ((menu->scroll_step < 0) && (offset < MENU_SCROLL_ARROW_HEIGHT))
1915 /* Don't scroll over the top if we weren't before: */
1916 if ((menu->scroll_offset >= 0) && (offset < 0))
1919 gdk_window_get_size (widget->window, &view_width, &view_height);
1921 /* Don't scroll past the bottom if we weren't before: */
1922 if (menu->scroll_offset > 0)
1923 view_height -= MENU_SCROLL_ARROW_HEIGHT;
1925 if ((menu->scroll_offset + view_height <= widget->requisition.height) &&
1926 (offset + view_height > widget->requisition.height))
1927 offset = widget->requisition.height - view_height;
1929 gtk_menu_scroll_to (menu, offset);
1931 GDK_THREADS_LEAVE ();
1937 gtk_menu_handle_scrolling (GtkMenu *menu, gboolean enter)
1939 GtkMenuShell *menu_shell;
1945 gboolean scroll_fast = FALSE;
1947 menu_shell = GTK_MENU_SHELL (menu);
1949 gdk_window_get_pointer (GTK_WIDGET (menu)->window, &x, &y, NULL);
1950 gdk_window_get_size (GTK_WIDGET (menu)->window, &width, &height);
1952 border = GTK_CONTAINER (menu)->border_width + GTK_WIDGET (menu)->style->ythickness;
1954 if (menu->upper_arrow_visible && !menu->tearoff_active)
1959 rect.height = MENU_SCROLL_ARROW_HEIGHT + border;
1962 if ((x >= rect.x) && (x < rect.x + rect.width) &&
1963 (y >= rect.y) && (y < rect.y + rect.height))
1966 scroll_fast = (y < rect.y + MENU_SCROLL_FAST_ZONE);
1969 if (enter && in_arrow &&
1970 (!menu->upper_arrow_prelight || menu->scroll_fast != scroll_fast))
1972 menu->upper_arrow_prelight = TRUE;
1973 menu->scroll_fast = scroll_fast;
1974 gdk_window_invalidate_rect (GTK_WIDGET (menu)->window, &rect, FALSE);
1976 /* Deselect the active item so that any submenus are poped down */
1977 gtk_menu_shell_deselect (menu_shell);
1979 gtk_menu_stop_scrolling (menu);
1980 menu->scroll_step = -MENU_SCROLL_STEP;
1981 menu->timeout_id = g_timeout_add ((scroll_fast) ? MENU_SCROLL_TIMEOUT2 : MENU_SCROLL_TIMEOUT1,
1982 gtk_menu_scroll_timeout,
1985 else if (!enter && !in_arrow && menu->upper_arrow_prelight)
1987 menu->upper_arrow_prelight = FALSE;
1988 gdk_window_invalidate_rect (GTK_WIDGET (menu)->window, &rect, FALSE);
1990 gtk_menu_stop_scrolling (menu);
1994 if (menu->lower_arrow_visible && !menu->tearoff_active)
1997 rect.y = height - border - MENU_SCROLL_ARROW_HEIGHT;
1999 rect.height = MENU_SCROLL_ARROW_HEIGHT + border;
2002 if ((x >= rect.x) && (x < rect.x + rect.width) &&
2003 (y >= rect.y) && (y < rect.y + rect.height))
2006 scroll_fast = (y > rect.y + rect.height - MENU_SCROLL_FAST_ZONE);
2009 if (enter && in_arrow &&
2010 (!menu->lower_arrow_prelight || menu->scroll_fast != scroll_fast))
2012 menu->lower_arrow_prelight = TRUE;
2013 menu->scroll_fast = scroll_fast;
2014 gdk_window_invalidate_rect (GTK_WIDGET (menu)->window, &rect, FALSE);
2016 /* Deselect the active item so that any submenus are poped down */
2017 gtk_menu_shell_deselect (menu_shell);
2019 gtk_menu_stop_scrolling (menu);
2020 menu->scroll_step = MENU_SCROLL_STEP;
2021 menu->timeout_id = g_timeout_add ((scroll_fast) ? MENU_SCROLL_TIMEOUT2 : MENU_SCROLL_TIMEOUT1,
2022 gtk_menu_scroll_timeout,
2025 else if (!enter && !in_arrow && menu->lower_arrow_prelight)
2027 menu->lower_arrow_prelight = FALSE;
2028 gdk_window_invalidate_rect (GTK_WIDGET (menu)->window, &rect, FALSE);
2030 gtk_menu_stop_scrolling (menu);
2036 gtk_menu_enter_notify (GtkWidget *widget,
2037 GdkEventCrossing *event)
2039 GtkWidget *menu_item;
2041 if (widget && GTK_IS_MENU (widget))
2042 gtk_menu_handle_scrolling (GTK_MENU (widget), TRUE);
2044 /* If this is a faked enter (see gtk_menu_motion_notify), 'widget'
2045 * will not correspond to the event widget's parent. Check to see
2046 * if we are in the parent's navigation region.
2048 menu_item = gtk_get_event_widget ((GdkEvent*) event);
2049 if (menu_item && GTK_IS_MENU_ITEM (menu_item) && GTK_IS_MENU (menu_item->parent) &&
2050 gtk_menu_navigating_submenu (GTK_MENU (menu_item->parent), event->x_root, event->y_root))
2053 return GTK_WIDGET_CLASS (parent_class)->enter_notify_event (widget, event);
2057 gtk_menu_leave_notify (GtkWidget *widget,
2058 GdkEventCrossing *event)
2060 GtkMenuShell *menu_shell;
2062 GtkMenuItem *menu_item;
2063 GtkWidget *event_widget;
2065 menu = GTK_MENU (widget);
2066 menu_shell = GTK_MENU_SHELL (widget);
2068 if (gtk_menu_navigating_submenu (menu, event->x_root, event->y_root))
2071 gtk_menu_handle_scrolling (menu, FALSE);
2073 event_widget = gtk_get_event_widget ((GdkEvent*) event);
2075 if (!event_widget || !GTK_IS_MENU_ITEM (event_widget))
2078 menu_item = GTK_MENU_ITEM (event_widget);
2080 /* Here we check to see if we're leaving an active menu item with a submenu,
2081 * in which case we enter submenu navigation mode.
2083 if (menu_shell->active_menu_item != NULL
2084 && menu_item->submenu != NULL
2085 && menu_item->submenu_placement == GTK_LEFT_RIGHT)
2087 if (menu_item->submenu->window != NULL)
2089 gtk_menu_set_submenu_navigation_region (menu, menu_item, event);
2094 return GTK_WIDGET_CLASS (parent_class)->leave_notify_event (widget, event);
2098 gtk_menu_stop_navigating_submenu (GtkMenu *menu)
2100 if (menu->navigation_region)
2102 gdk_region_destroy (menu->navigation_region);
2103 menu->navigation_region = NULL;
2106 if (menu->navigation_timeout)
2108 gtk_timeout_remove (menu->navigation_timeout);
2109 menu->navigation_timeout = 0;
2113 /* When the timeout is elapsed, the navigation region is destroyed
2114 * and the menuitem under the pointer (if any) is selected.
2117 gtk_menu_stop_navigating_submenu_cb (gpointer user_data)
2119 GtkMenu *menu = user_data;
2120 GdkWindow *child_window;
2122 GDK_THREADS_ENTER ();
2124 gtk_menu_stop_navigating_submenu (menu);
2126 if (GTK_WIDGET_REALIZED (menu))
2128 child_window = gdk_window_get_pointer (menu->bin_window, NULL, NULL, NULL);
2132 GdkEventCrossing send_event;
2134 memset (&send_event, 0, sizeof (send_event));
2135 send_event.window = child_window;
2136 send_event.type = GDK_ENTER_NOTIFY;
2137 send_event.time = GDK_CURRENT_TIME; /* Bogus */
2138 send_event.send_event = TRUE;
2140 GTK_WIDGET_CLASS (parent_class)->enter_notify_event (GTK_WIDGET (menu), &send_event);
2144 GDK_THREADS_LEAVE ();
2150 gtk_menu_navigating_submenu (GtkMenu *menu,
2154 if (menu->navigation_region)
2156 if (gdk_region_point_in (menu->navigation_region, event_x, event_y))
2160 gtk_menu_stop_navigating_submenu (menu);
2168 gtk_menu_set_submenu_navigation_region (GtkMenu *menu,
2169 GtkMenuItem *menu_item,
2170 GdkEventCrossing *event)
2172 gint submenu_left = 0;
2173 gint submenu_right = 0;
2174 gint submenu_top = 0;
2175 gint submenu_bottom = 0;
2179 GtkWidget *event_widget;
2181 g_return_if_fail (menu_item->submenu != NULL);
2182 g_return_if_fail (event != NULL);
2184 event_widget = gtk_get_event_widget ((GdkEvent*) event);
2186 gdk_window_get_origin (menu_item->submenu->window, &submenu_left, &submenu_top);
2187 gdk_window_get_size (menu_item->submenu->window, &width, &height);
2188 submenu_right = submenu_left + width;
2189 submenu_bottom = submenu_top + height;
2191 gdk_window_get_size (event_widget->window, &width, &height);
2193 if (event->x >= 0 && event->x < width)
2195 /* Set navigation region */
2196 /* We fudge/give a little padding in case the user
2197 * ``misses the vertex'' of the triangle/is off by a pixel or two.
2199 if (menu_item->submenu_direction == GTK_DIRECTION_RIGHT)
2200 point[0].x = event->x_root - SUBMENU_NAV_REGION_PADDING;
2202 point[0].x = event->x_root + SUBMENU_NAV_REGION_PADDING;
2204 /* Exiting the top or bottom? */
2207 point[0].y = event->y_root + SUBMENU_NAV_REGION_PADDING;
2208 point[1].y = submenu_top;
2210 if (point[0].y <= point[1].y)
2215 point[0].y = event->y_root - SUBMENU_NAV_REGION_PADDING;
2216 point[1].y = submenu_bottom;
2218 if (point[0].y >= point[1].y)
2222 /* Submenu is to the left or right? */
2223 if (menu_item->submenu_direction == GTK_DIRECTION_RIGHT)
2224 point[1].x = submenu_left; /* right */
2226 point[1].x = submenu_right; /* left */
2228 point[2].x = point[1].x;
2229 point[2].y = point[0].y;
2231 gtk_menu_stop_navigating_submenu (menu);
2233 menu->navigation_region = gdk_region_polygon (point, 3, GDK_WINDING_RULE);
2235 menu->navigation_timeout = gtk_timeout_add (SUBMENU_NAV_HYSTERESIS_TIMEOUT,
2236 gtk_menu_stop_navigating_submenu_cb, menu);
2241 gtk_menu_deactivate (GtkMenuShell *menu_shell)
2245 g_return_if_fail (GTK_IS_MENU (menu_shell));
2247 parent = menu_shell->parent_menu_shell;
2249 menu_shell->activate_time = 0;
2250 gtk_menu_popdown (GTK_MENU (menu_shell));
2253 gtk_menu_shell_deactivate (GTK_MENU_SHELL (parent));
2257 gtk_menu_position (GtkMenu *menu)
2260 GtkRequisition requisition;
2268 g_return_if_fail (GTK_IS_MENU (menu));
2270 widget = GTK_WIDGET (menu);
2272 screen_width = gdk_screen_width ();
2273 screen_height = gdk_screen_height ();
2275 gdk_window_get_pointer (NULL, &x, &y, NULL);
2277 /* We need the requisition to figure out the right place to
2278 * popup the menu. In fact, we always need to ask here, since
2279 * if a size_request was queued while we weren't popped up,
2280 * the requisition won't have been recomputed yet.
2282 gtk_widget_size_request (widget, &requisition);
2286 if (menu->position_func)
2287 (* menu->position_func) (menu, &x, &y, &push_in, menu->position_func_data);
2290 x = CLAMP (x - 2, 0, MAX (0, screen_width - requisition.width));
2291 y = CLAMP (y - 2, 0, MAX (0, screen_height - requisition.height));
2298 menu_height = GTK_WIDGET (menu)->requisition.height;
2300 if (y + menu_height > screen_height)
2302 scroll_offset -= y + menu_height - screen_height;
2303 y = screen_height - menu_height;
2313 if (y + requisition.height > screen_height)
2314 requisition.height = screen_height - y;
2319 requisition.height -= -y;
2323 if (scroll_offset > 0)
2324 scroll_offset += MENU_SCROLL_ARROW_HEIGHT;
2326 gtk_window_move (GTK_WINDOW (GTK_MENU_SHELL (menu)->active ? menu->toplevel : menu->tearoff_window),
2328 gtk_widget_set_usize (GTK_MENU_SHELL (menu)->active ?
2329 menu->toplevel : menu->tearoff_hbox,
2330 -1, requisition.height);
2331 menu->scroll_offset = scroll_offset;
2335 gtk_menu_stop_scrolling (GtkMenu *menu)
2337 if (menu->timeout_id)
2339 g_source_remove (menu->timeout_id);
2340 menu->timeout_id = 0;
2346 gtk_menu_scroll_to (GtkMenu *menu,
2351 gint view_width, view_height;
2353 gboolean last_visible;
2356 widget = GTK_WIDGET (menu);
2358 if (menu->tearoff_active &&
2359 menu->tearoff_adjustment &&
2360 (menu->tearoff_adjustment->value != offset))
2362 menu->tearoff_adjustment->value = offset;
2363 gtk_adjustment_value_changed (menu->tearoff_adjustment);
2366 /* Scroll the menu: */
2367 gdk_window_move (menu->bin_window, 0, -offset);
2369 /* Move/resize the viewport according to arrows: */
2370 gdk_window_get_size (widget->window, &view_width, &view_height);
2372 border_width = GTK_CONTAINER (menu)->border_width;
2373 view_width -= (border_width + widget->style->xthickness) * 2;
2374 view_height -= (border_width + widget->style->ythickness) * 2;
2375 menu_height = widget->requisition.height - (border_width + widget->style->ythickness) * 2;
2377 x = border_width + widget->style->xthickness;
2378 y = border_width + widget->style->ythickness;
2380 if (!menu->tearoff_active)
2382 last_visible = menu->upper_arrow_visible;
2383 menu->upper_arrow_visible = (offset > 0);
2385 if (menu->upper_arrow_visible)
2386 view_height -= MENU_SCROLL_ARROW_HEIGHT;
2388 if ( (last_visible != menu->upper_arrow_visible) &&
2389 !menu->upper_arrow_visible)
2391 menu->upper_arrow_prelight = FALSE;
2393 /* If we hid the upper arrow, possibly remove timeout */
2394 if (menu->scroll_step < 0)
2395 gtk_menu_stop_scrolling (menu);
2398 last_visible = menu->lower_arrow_visible;
2399 menu->lower_arrow_visible = (view_height + offset < menu_height);
2401 if (menu->lower_arrow_visible)
2402 view_height -= MENU_SCROLL_ARROW_HEIGHT;
2404 if ( (last_visible != menu->lower_arrow_visible) &&
2405 !menu->lower_arrow_visible)
2407 menu->lower_arrow_prelight = FALSE;
2409 /* If we hid the lower arrow, possibly remove timeout */
2410 if (menu->scroll_step > 0)
2411 gtk_menu_stop_scrolling (menu);
2414 if (menu->upper_arrow_visible)
2415 y += MENU_SCROLL_ARROW_HEIGHT;
2418 gdk_window_move_resize (menu->view_window,
2424 menu->scroll_offset = offset;
2428 gtk_menu_scroll_item_visible (GtkMenuShell *menu_shell,
2429 GtkWidget *menu_item)
2434 GtkRequisition child_requisition;
2435 gint child_offset, child_height;
2439 gboolean last_child = 0;
2441 menu = GTK_MENU (menu_shell);
2443 /* We need to check if the selected item fully visible.
2444 * If not we need to scroll the menu so that it becomes fully
2451 children = menu_shell->children;
2454 child = children->data;
2455 children = children->next;
2457 if (GTK_WIDGET_VISIBLE (child))
2459 gtk_widget_size_request (child, &child_requisition);
2460 child_offset += child_height;
2461 child_height = child_requisition.height;
2464 if (child == menu_item)
2466 last_child = (children == NULL);
2471 if (child == menu_item)
2473 y = menu->scroll_offset;
2474 gdk_window_get_size (GTK_WIDGET (menu)->window, &width, &height);
2476 height -= 2*GTK_CONTAINER (menu)->border_width + 2*GTK_WIDGET (menu)->style->ythickness;
2478 if (child_offset + child_height <= y)
2480 /* Ignore the enter event we might get if the pointer is on the menu
2482 menu_shell->ignore_enter = TRUE;
2483 gtk_menu_scroll_to (menu, child_offset);
2488 if (menu->upper_arrow_visible && !menu->tearoff_active)
2489 arrow_height += MENU_SCROLL_ARROW_HEIGHT;
2490 if (menu->lower_arrow_visible && !menu->tearoff_active)
2491 arrow_height += MENU_SCROLL_ARROW_HEIGHT;
2493 if (child_offset >= y + height - arrow_height)
2496 if (!last_child && !menu->tearoff_active)
2497 arrow_height += MENU_SCROLL_ARROW_HEIGHT;
2499 y = child_offset + child_height - height + arrow_height;
2500 if ((y > 0) && !menu->tearoff_active)
2502 /* Need upper arrow */
2503 arrow_height += MENU_SCROLL_ARROW_HEIGHT;
2504 y = child_offset + child_height - height + arrow_height;
2506 /* Ignore the enter event we might get if the pointer is on the menu
2508 menu_shell->ignore_enter = TRUE;
2509 gtk_menu_scroll_to (menu, y);
2517 gtk_menu_select_item (GtkMenuShell *menu_shell,
2518 GtkWidget *menu_item)
2520 GtkMenu *menu = GTK_MENU (menu_shell);
2522 if (GTK_WIDGET_REALIZED (GTK_WIDGET (menu)))
2523 gtk_menu_scroll_item_visible (menu_shell, menu_item);
2525 GTK_MENU_SHELL_CLASS (parent_class)->select_item (menu_shell, menu_item);
2529 /* Reparent the menu, taking care of the refcounting
2531 * If unrealize is true we force a unrealize while reparenting the parent.
2532 * This can help eliminate flicker in some cases.
2534 * What happens is that when the menu is unrealized and then re-realized,
2535 * the allocations are as follows:
2537 * parent - 1x1 at (0,0)
2538 * child1 - 100x20 at (0,0)
2539 * child2 - 100x20 at (0,20)
2540 * child3 - 100x20 at (0,40)
2542 * That is, the parent is small but the children are full sized. Then,
2543 * when the queued_resize gets processed, the parent gets resized to
2546 * But in order to eliminate flicker when scrolling, gdkgeometry-x11.c
2547 * contains the following logic:
2549 * - if a move or resize operation on a window would change the clip
2550 * region on the children, then before the window is resized
2551 * the background for children is temporarily set to None, the
2552 * move/resize done, and the background for the children restored.
2554 * So, at the point where the parent is resized to final size, the
2555 * background for the children is temporarily None, and thus they
2556 * are not cleared to the background color and the previous background
2557 * (the image of the menu) is left in place.
2560 gtk_menu_reparent (GtkMenu *menu,
2561 GtkWidget *new_parent,
2564 GtkObject *object = GTK_OBJECT (menu);
2565 GtkWidget *widget = GTK_WIDGET (menu);
2566 gboolean was_floating = GTK_OBJECT_FLOATING (object);
2568 gtk_object_ref (object);
2569 gtk_object_sink (object);
2573 gtk_object_ref (object);
2574 gtk_container_remove (GTK_CONTAINER (widget->parent), widget);
2575 gtk_container_add (GTK_CONTAINER (new_parent), widget);
2576 gtk_object_unref (object);
2579 gtk_widget_reparent (GTK_WIDGET (menu), new_parent);
2582 GTK_OBJECT_SET_FLAGS (object, GTK_FLOATING);
2584 gtk_object_unref (object);
2588 gtk_menu_show_all (GtkWidget *widget)
2590 g_return_if_fail (GTK_IS_MENU (widget));
2592 /* Show children, but not self. */
2593 gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL);
2598 gtk_menu_hide_all (GtkWidget *widget)
2600 g_return_if_fail (GTK_IS_MENU (widget));
2602 /* Hide children, but not self. */
2603 gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_hide_all, NULL);