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 Library 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 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the Free
16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #include "gtkmenuitem.h"
20 #include "gtkmenushell.h"
21 #include "gtksignal.h"
24 #define MENU_SHELL_TIMEOUT 500
25 #define MENU_SHELL_CLASS(w) GTK_MENU_SHELL_CLASS (GTK_OBJECT (w)->klass)
34 static void gtk_menu_shell_class_init (GtkMenuShellClass *klass);
35 static void gtk_menu_shell_init (GtkMenuShell *menu_shell);
36 static void gtk_menu_shell_map (GtkWidget *widget);
37 static void gtk_menu_shell_realize (GtkWidget *widget);
38 static gint gtk_menu_shell_button_press (GtkWidget *widget,
39 GdkEventButton *event);
40 static gint gtk_menu_shell_button_release (GtkWidget *widget,
41 GdkEventButton *event);
42 static gint gtk_menu_shell_enter_notify (GtkWidget *widget,
43 GdkEventCrossing *event);
44 static gint gtk_menu_shell_leave_notify (GtkWidget *widget,
45 GdkEventCrossing *event);
46 static void gtk_menu_shell_add (GtkContainer *container,
48 static void gtk_menu_shell_remove (GtkContainer *container,
50 static void gtk_menu_shell_foreach (GtkContainer *container,
52 gpointer callback_data);
53 static void gtk_real_menu_shell_deactivate (GtkMenuShell *menu_shell);
54 static gint gtk_menu_shell_is_item (GtkMenuShell *menu_shell,
58 static GtkContainerClass *parent_class = NULL;
59 static guint menu_shell_signals[LAST_SIGNAL] = { 0 };
63 gtk_menu_shell_get_type ()
65 static guint menu_shell_type = 0;
69 GtkTypeInfo menu_shell_info =
72 sizeof (GtkMenuShell),
73 sizeof (GtkMenuShellClass),
74 (GtkClassInitFunc) gtk_menu_shell_class_init,
75 (GtkObjectInitFunc) gtk_menu_shell_init,
80 menu_shell_type = gtk_type_unique (gtk_container_get_type (), &menu_shell_info);
83 return menu_shell_type;
87 gtk_menu_shell_class_init (GtkMenuShellClass *klass)
89 GtkObjectClass *object_class;
90 GtkWidgetClass *widget_class;
91 GtkContainerClass *container_class;
93 object_class = (GtkObjectClass*) klass;
94 widget_class = (GtkWidgetClass*) klass;
95 container_class = (GtkContainerClass*) klass;
97 parent_class = gtk_type_class (gtk_container_get_type ());
99 menu_shell_signals[DEACTIVATE] =
100 gtk_signal_new ("deactivate",
103 GTK_SIGNAL_OFFSET (GtkMenuShellClass, deactivate),
104 gtk_signal_default_marshaller,
107 gtk_object_class_add_signals (object_class, menu_shell_signals, LAST_SIGNAL);
109 widget_class->map = gtk_menu_shell_map;
110 widget_class->realize = gtk_menu_shell_realize;
111 widget_class->button_press_event = gtk_menu_shell_button_press;
112 widget_class->button_release_event = gtk_menu_shell_button_release;
113 widget_class->enter_notify_event = gtk_menu_shell_enter_notify;
114 widget_class->leave_notify_event = gtk_menu_shell_leave_notify;
116 container_class->add = gtk_menu_shell_add;
117 container_class->remove = gtk_menu_shell_remove;
118 container_class->foreach = gtk_menu_shell_foreach;
120 klass->submenu_placement = GTK_TOP_BOTTOM;
121 klass->deactivate = gtk_real_menu_shell_deactivate;
125 gtk_menu_shell_init (GtkMenuShell *menu_shell)
127 menu_shell->children = NULL;
128 menu_shell->active_menu_item = NULL;
129 menu_shell->parent_menu_shell = NULL;
130 menu_shell->active = FALSE;
131 menu_shell->have_grab = FALSE;
132 menu_shell->have_xgrab = FALSE;
133 menu_shell->ignore_leave = FALSE;
134 menu_shell->button = 0;
135 menu_shell->menu_flag = 0;
136 menu_shell->activate_time = 0;
140 gtk_menu_shell_append (GtkMenuShell *menu_shell,
143 gtk_menu_shell_insert (menu_shell, child, -1);
147 gtk_menu_shell_prepend (GtkMenuShell *menu_shell,
150 gtk_menu_shell_insert (menu_shell, child, 0);
154 gtk_menu_shell_insert (GtkMenuShell *menu_shell,
162 g_return_if_fail (menu_shell != NULL);
163 g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
164 g_return_if_fail (child != NULL);
165 g_return_if_fail (GTK_IS_MENU_ITEM (child));
167 gtk_widget_set_parent (child, GTK_WIDGET (menu_shell));
169 if (GTK_WIDGET_VISIBLE (child->parent))
171 if (GTK_WIDGET_REALIZED (child->parent) &&
172 !GTK_WIDGET_REALIZED (child))
173 gtk_widget_realize (child);
175 if (GTK_WIDGET_MAPPED (child->parent) &&
176 !GTK_WIDGET_MAPPED (child))
177 gtk_widget_map (child);
180 nchildren = g_list_length (menu_shell->children);
181 if ((position < 0) || (position > nchildren))
182 position = nchildren;
184 if (position == nchildren)
186 menu_shell->children = g_list_append (menu_shell->children, child);
190 tmp_list = g_list_nth (menu_shell->children, position);
191 new_list = g_list_alloc ();
192 new_list->data = child;
195 tmp_list->prev->next = new_list;
196 new_list->next = tmp_list;
197 new_list->prev = tmp_list->prev;
198 tmp_list->prev = new_list;
200 if (tmp_list == menu_shell->children)
201 menu_shell->children = new_list;
204 if (GTK_WIDGET_VISIBLE (menu_shell))
205 gtk_widget_queue_resize (GTK_WIDGET (menu_shell));
209 gtk_menu_shell_deactivate (GtkMenuShell *menu_shell)
211 g_return_if_fail (menu_shell != NULL);
212 g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
214 gtk_signal_emit (GTK_OBJECT (menu_shell), menu_shell_signals[DEACTIVATE]);
218 gtk_menu_shell_map (GtkWidget *widget)
220 GtkMenuShell *menu_shell;
224 g_return_if_fail (widget != NULL);
225 g_return_if_fail (GTK_IS_MENU_SHELL (widget));
227 menu_shell = GTK_MENU_SHELL (widget);
228 GTK_WIDGET_SET_FLAGS (menu_shell, GTK_MAPPED);
229 gdk_window_show (widget->window);
231 children = menu_shell->children;
234 child = children->data;
235 children = children->next;
237 if (GTK_WIDGET_VISIBLE (child) && !GTK_WIDGET_MAPPED (child))
238 gtk_widget_map (child);
243 gtk_menu_shell_realize (GtkWidget *widget)
245 GdkWindowAttr attributes;
246 gint attributes_mask;
248 g_return_if_fail (widget != NULL);
249 g_return_if_fail (GTK_IS_MENU_SHELL (widget));
251 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
253 attributes.x = widget->allocation.x;
254 attributes.y = widget->allocation.y;
255 attributes.width = widget->allocation.width;
256 attributes.height = widget->allocation.height;
257 attributes.window_type = GDK_WINDOW_CHILD;
258 attributes.wclass = GDK_INPUT_OUTPUT;
259 attributes.visual = gtk_widget_get_visual (widget);
260 attributes.colormap = gtk_widget_get_colormap (widget);
261 attributes.event_mask = gtk_widget_get_events (widget);
262 attributes.event_mask |= (GDK_EXPOSURE_MASK |
263 GDK_BUTTON_PRESS_MASK |
264 GDK_BUTTON_RELEASE_MASK |
265 GDK_ENTER_NOTIFY_MASK |
266 GDK_LEAVE_NOTIFY_MASK);
268 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
269 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
270 gdk_window_set_user_data (widget->window, widget);
272 widget->style = gtk_style_attach (widget->style, widget->window);
273 gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
277 gtk_menu_shell_button_press (GtkWidget *widget,
278 GdkEventButton *event)
280 GtkMenuShell *menu_shell;
281 GtkWidget *menu_item;
283 g_return_val_if_fail (widget != NULL, FALSE);
284 g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
285 g_return_val_if_fail (event != NULL, FALSE);
287 if (event->type != GDK_BUTTON_PRESS)
290 menu_shell = GTK_MENU_SHELL (widget);
292 if (menu_shell->parent_menu_shell)
294 gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
296 else if (!menu_shell->active || !menu_shell->button)
298 if (!menu_shell->active)
300 gtk_grab_add (GTK_WIDGET (widget));
301 menu_shell->have_grab = TRUE;
303 menu_shell->active = TRUE;
305 menu_item = gtk_get_event_widget ((GdkEvent*) event);
306 if (menu_item && GTK_IS_MENU_ITEM (menu_item) &&
307 gtk_menu_shell_is_item (menu_shell, menu_item))
309 if ((menu_item->parent == widget) &&
310 (menu_item != menu_shell->active_menu_item))
312 if (menu_shell->active_menu_item)
313 gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
315 menu_shell->active_menu_item = menu_item;
316 gtk_menu_item_set_placement (GTK_MENU_ITEM (menu_shell->active_menu_item),
317 MENU_SHELL_CLASS (menu_shell)->submenu_placement);
318 gtk_menu_item_select (GTK_MENU_ITEM (menu_shell->active_menu_item));
321 else if (!menu_shell->button)
323 gtk_menu_shell_deactivate (menu_shell);
326 if (menu_shell->active)
327 menu_shell->button = event->button;
331 widget = gtk_get_event_widget ((GdkEvent*) event);
332 if (widget == GTK_WIDGET (menu_shell))
333 gtk_menu_shell_deactivate (menu_shell);
340 gtk_menu_shell_button_release (GtkWidget *widget,
341 GdkEventButton *event)
343 GtkMenuShell *menu_shell;
344 GtkWidget *menu_item;
347 g_return_val_if_fail (widget != NULL, FALSE);
348 g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
349 g_return_val_if_fail (event != NULL, FALSE);
351 menu_shell = GTK_MENU_SHELL (widget);
352 if (menu_shell->active)
354 if (menu_shell->button && (event->button != menu_shell->button))
356 menu_shell->button = 0;
357 if (menu_shell->parent_menu_shell)
358 gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
362 menu_shell->button = 0;
363 menu_item = gtk_get_event_widget ((GdkEvent*) event);
366 if ((event->time - menu_shell->activate_time) > MENU_SHELL_TIMEOUT)
368 if (menu_shell->active_menu_item == menu_item)
370 if (GTK_MENU_ITEM (menu_item)->submenu == NULL)
372 gtk_menu_shell_deactivate (menu_shell);
373 gtk_widget_activate (menu_item);
377 else if (menu_shell->parent_menu_shell)
379 menu_shell->active = TRUE;
380 gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
387 if ((!deactivate || (menu_shell->active_menu_item == menu_item)) &&
388 (gdk_pointer_grab (widget->window, TRUE,
389 GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
390 GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK,
391 NULL, NULL, event->time) == 0))
394 menu_shell->have_xgrab = TRUE;
395 menu_shell->ignore_leave = TRUE;
401 gtk_menu_shell_deactivate (menu_shell);
408 gtk_menu_shell_enter_notify (GtkWidget *widget,
409 GdkEventCrossing *event)
411 GtkMenuShell *menu_shell;
412 GtkWidget *menu_item;
414 g_return_val_if_fail (widget != NULL, FALSE);
415 g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
416 g_return_val_if_fail (event != NULL, FALSE);
418 menu_shell = GTK_MENU_SHELL (widget);
419 if (menu_shell->active)
421 menu_item = gtk_get_event_widget ((GdkEvent*) event);
423 if (!menu_item || !GTK_WIDGET_IS_SENSITIVE (menu_item))
426 if ((menu_item->parent == widget) &&
427 (menu_shell->active_menu_item != menu_item) &&
428 GTK_IS_MENU_ITEM (menu_item))
430 if ((event->detail != GDK_NOTIFY_INFERIOR) &&
431 (GTK_WIDGET_STATE (menu_item) != GTK_STATE_PRELIGHT))
433 if (menu_shell->active_menu_item)
434 gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
436 menu_shell->active_menu_item = menu_item;
437 gtk_menu_item_set_placement (GTK_MENU_ITEM (menu_shell->active_menu_item),
438 MENU_SHELL_CLASS (menu_shell)->submenu_placement);
439 gtk_menu_item_select (GTK_MENU_ITEM (menu_shell->active_menu_item));
442 else if (menu_shell->parent_menu_shell)
444 gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
452 gtk_menu_shell_leave_notify (GtkWidget *widget,
453 GdkEventCrossing *event)
455 GtkMenuShell *menu_shell;
456 GtkMenuItem *menu_item;
457 GtkWidget *event_widget;
459 g_return_val_if_fail (widget != NULL, FALSE);
460 g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
461 g_return_val_if_fail (event != NULL, FALSE);
463 if (GTK_WIDGET_VISIBLE (widget))
465 menu_shell = GTK_MENU_SHELL (widget);
466 event_widget = gtk_get_event_widget ((GdkEvent*) event);
468 if (!event_widget || !GTK_IS_MENU_ITEM (event_widget))
471 menu_item = GTK_MENU_ITEM (event_widget);
473 if (!GTK_WIDGET_IS_SENSITIVE (menu_item))
476 if (menu_shell->ignore_leave)
478 menu_shell->ignore_leave = FALSE;
482 if ((menu_shell->active_menu_item == event_widget) &&
483 (menu_item->submenu == NULL))
485 if ((event->detail != GDK_NOTIFY_INFERIOR) &&
486 (GTK_WIDGET_STATE (menu_item) != GTK_STATE_NORMAL))
488 gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
489 menu_shell->active_menu_item = NULL;
492 else if (menu_shell->parent_menu_shell)
494 gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
502 gtk_menu_shell_add (GtkContainer *container,
505 gtk_menu_shell_append (GTK_MENU_SHELL (container), widget);
509 gtk_menu_shell_remove (GtkContainer *container,
512 GtkMenuShell *menu_shell;
515 g_return_if_fail (container != NULL);
516 g_return_if_fail (GTK_IS_MENU_SHELL (container));
517 g_return_if_fail (widget != NULL);
518 g_return_if_fail (GTK_IS_MENU_ITEM (widget));
520 was_visible = GTK_WIDGET_VISIBLE (widget);
521 menu_shell = GTK_MENU_SHELL (container);
522 menu_shell->children = g_list_remove (menu_shell->children, widget);
524 gtk_widget_unparent (widget);
526 if (was_visible && GTK_WIDGET_VISIBLE (container))
527 gtk_widget_queue_resize (GTK_WIDGET (container));
531 gtk_menu_shell_foreach (GtkContainer *container,
532 GtkCallback callback,
533 gpointer callback_data)
535 GtkMenuShell *menu_shell;
539 g_return_if_fail (container != NULL);
540 g_return_if_fail (GTK_IS_MENU_SHELL (container));
541 g_return_if_fail (callback != NULL);
543 menu_shell = GTK_MENU_SHELL (container);
545 children = menu_shell->children;
548 child = children->data;
549 children = children->next;
551 (* callback) (child, callback_data);
557 gtk_real_menu_shell_deactivate (GtkMenuShell *menu_shell)
559 g_return_if_fail (menu_shell != NULL);
560 g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
562 if (menu_shell->active)
564 menu_shell->button = 0;
565 menu_shell->active = FALSE;
567 if (menu_shell->active_menu_item)
569 gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
570 menu_shell->active_menu_item = NULL;
573 if (menu_shell->have_grab)
575 menu_shell->have_grab = FALSE;
576 gtk_grab_remove (GTK_WIDGET (menu_shell));
578 if (menu_shell->have_xgrab)
580 menu_shell->have_xgrab = FALSE;
581 gdk_pointer_ungrab (GDK_CURRENT_TIME);
587 gtk_menu_shell_is_item (GtkMenuShell *menu_shell,
592 g_return_val_if_fail (menu_shell != NULL, FALSE);
593 g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), FALSE);
594 g_return_val_if_fail (child != NULL, FALSE);
596 parent = child->parent;
597 while (parent && GTK_IS_MENU_SHELL (parent))
599 if (parent == (GtkWidget*) menu_shell)
601 parent = GTK_MENU_SHELL (parent)->parent_menu_shell;