gtkmenuitem.c 33.2 KB
Newer Older
Elliot Lee's avatar
Elliot Lee committed
1 2 3 4
/* GTK - The GIMP Toolkit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library is free software; you can redistribute it and/or
5
 * modify it under the terms of the GNU Lesser General Public
Elliot Lee's avatar
Elliot Lee committed
6 7 8 9 10 11
 * 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
12
 * Lesser General Public License for more details.
Elliot Lee's avatar
Elliot Lee committed
13
 *
14
 * You should have received a copy of the GNU Lesser General Public
15 16 17
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
Elliot Lee's avatar
Elliot Lee committed
18
 */
19 20

/*
21
 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
22 23 24 25 26
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

27 28
#define GTK_MENU_INTERNALS

Elliot Lee's avatar
Elliot Lee committed
29
#include <string.h>
Tim Janik's avatar
Tim Janik committed
30
#include "gtkaccellabel.h"
Elliot Lee's avatar
Elliot Lee committed
31
#include "gtkmain.h"
32
#include "gtkmarshalers.h"
Elliot Lee's avatar
Elliot Lee committed
33
#include "gtkmenu.h"
34
#include "gtkmenubar.h"
Elliot Lee's avatar
Elliot Lee committed
35
#include "gtkmenuitem.h"
36
#include "gtkseparatormenuitem.h"
Elliot Lee's avatar
Elliot Lee committed
37 38 39 40 41 42 43 44 45


#define BORDER_SPACING  3

#define MENU_ITEM_CLASS(w)  GTK_MENU_ITEM_CLASS (GTK_OBJECT (w)->klass)


enum {
  ACTIVATE,
46
  ACTIVATE_ITEM,
47 48
  TOGGLE_SIZE_REQUEST,
  TOGGLE_SIZE_ALLOCATE,
Elliot Lee's avatar
Elliot Lee committed
49 50 51 52 53 54 55
  LAST_SIGNAL
};


static void gtk_menu_item_class_init     (GtkMenuItemClass *klass);
static void gtk_menu_item_init           (GtkMenuItem      *menu_item);
static void gtk_menu_item_destroy        (GtkObject        *object);
56
static void gtk_menu_item_finalize       (GObject          *object);
Elliot Lee's avatar
Elliot Lee committed
57 58 59 60
static void gtk_menu_item_size_request   (GtkWidget        *widget,
					  GtkRequisition   *requisition);
static void gtk_menu_item_size_allocate  (GtkWidget        *widget,
					  GtkAllocation    *allocation);
61 62 63 64
static void gtk_menu_item_realize        (GtkWidget        *widget);
static void gtk_menu_item_unrealize      (GtkWidget        *widget);
static void gtk_menu_item_map            (GtkWidget        *widget);
static void gtk_menu_item_unmap          (GtkWidget        *widget);
Elliot Lee's avatar
Elliot Lee committed
65 66 67 68
static void gtk_menu_item_paint          (GtkWidget        *widget,
					  GdkRectangle     *area);
static gint gtk_menu_item_expose         (GtkWidget        *widget,
					  GdkEventExpose   *event);
69 70
static void gtk_menu_item_parent_set     (GtkWidget        *widget,
					  GtkWidget        *previous_parent);
71

72

73 74 75 76
static void gtk_real_menu_item_select               (GtkItem     *item);
static void gtk_real_menu_item_deselect             (GtkItem     *item);
static void gtk_real_menu_item_activate_item        (GtkMenuItem *item);
static void gtk_real_menu_item_toggle_size_request  (GtkMenuItem *menu_item,
77
						     gint        *requisition);
78
static void gtk_real_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
79
						     gint         allocation);
80
static gboolean gtk_menu_item_mnemonic_activate     (GtkWidget   *widget,
81
						     gboolean     group_cycling);
82

Elliot Lee's avatar
Elliot Lee committed
83
static gint gtk_menu_item_select_timeout (gpointer          data);
84
static void gtk_menu_item_popup_submenu  (gpointer     data);
Elliot Lee's avatar
Elliot Lee committed
85 86 87
static void gtk_menu_item_position_menu  (GtkMenu          *menu,
					  gint             *x,
					  gint             *y,
88
					  gboolean         *push_in,
Elliot Lee's avatar
Elliot Lee committed
89
					  gpointer          user_data);
90 91
static void gtk_menu_item_show_all       (GtkWidget        *widget);
static void gtk_menu_item_hide_all       (GtkWidget        *widget);
92 93 94 95
static void gtk_menu_item_forall         (GtkContainer    *container,
					  gboolean         include_internals,
					  GtkCallback      callback,
					  gpointer         callback_data);
Elliot Lee's avatar
Elliot Lee committed
96

97

Elliot Lee's avatar
Elliot Lee committed
98
static GtkItemClass *parent_class;
99
static guint menu_item_signals[LAST_SIGNAL] = { 0 };
Elliot Lee's avatar
Elliot Lee committed
100

Manish Singh's avatar
Manish Singh committed
101
GType
102
gtk_menu_item_get_type (void)
Elliot Lee's avatar
Elliot Lee committed
103
{
Manish Singh's avatar
Manish Singh committed
104
  static GType menu_item_type = 0;
Elliot Lee's avatar
Elliot Lee committed
105 106 107

  if (!menu_item_type)
    {
108
      static const GTypeInfo menu_item_info =
Elliot Lee's avatar
Elliot Lee committed
109 110
      {
	sizeof (GtkMenuItemClass),
111 112 113 114 115 116 117 118
	NULL,           /* base_init */
	NULL,           /* base_finalize */
	(GClassInitFunc) gtk_menu_item_class_init,
	NULL,           /* class_finalize */
	NULL,           /* class_data */
	sizeof (GtkMenuItem),
	16,             /* n_preallocs */
	(GInstanceInitFunc) gtk_menu_item_init,
Elliot Lee's avatar
Elliot Lee committed
119 120
      };

Manish Singh's avatar
Manish Singh committed
121 122
      menu_item_type = g_type_register_static (GTK_TYPE_ITEM, "GtkMenuItem",
					       &menu_item_info, 0);
Elliot Lee's avatar
Elliot Lee committed
123 124 125 126 127 128 129 130
    }

  return menu_item_type;
}

static void
gtk_menu_item_class_init (GtkMenuItemClass *klass)
{
131 132 133 134 135
  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);
  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
  GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
  GtkItemClass *item_class = GTK_ITEM_CLASS (klass);
Elliot Lee's avatar
Elliot Lee committed
136

137
  parent_class = g_type_class_peek_parent (klass);
Elliot Lee's avatar
Elliot Lee committed
138

139
  gobject_class->finalize = gtk_menu_item_finalize;
140 141 142 143 144 145

  object_class->destroy = gtk_menu_item_destroy;

  widget_class->size_request = gtk_menu_item_size_request;
  widget_class->size_allocate = gtk_menu_item_size_allocate;
  widget_class->expose_event = gtk_menu_item_expose;
146 147 148 149
  widget_class->realize = gtk_menu_item_realize;
  widget_class->unrealize = gtk_menu_item_unrealize;
  widget_class->map = gtk_menu_item_map;
  widget_class->unmap = gtk_menu_item_unmap;
150 151
  widget_class->show_all = gtk_menu_item_show_all;
  widget_class->hide_all = gtk_menu_item_hide_all;
152
  widget_class->mnemonic_activate = gtk_menu_item_mnemonic_activate;
153
  widget_class->parent_set = gtk_menu_item_parent_set;
154
  
155 156 157 158 159 160 161 162 163 164 165 166
  container_class->forall = gtk_menu_item_forall;

  item_class->select = gtk_real_menu_item_select;
  item_class->deselect = gtk_real_menu_item_deselect;

  klass->activate = NULL;
  klass->activate_item = gtk_real_menu_item_activate_item;
  klass->toggle_size_request = gtk_real_menu_item_toggle_size_request;
  klass->toggle_size_allocate = gtk_real_menu_item_toggle_size_allocate;

  klass->hide_on_activate = TRUE;

Elliot Lee's avatar
Elliot Lee committed
167
  menu_item_signals[ACTIVATE] =
Manish Singh's avatar
Manish Singh committed
168 169 170 171 172 173 174
    g_signal_new ("activate",
		  G_OBJECT_CLASS_TYPE (gobject_class),
		  G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
		  G_STRUCT_OFFSET (GtkMenuItemClass, activate),
		  NULL, NULL,
		  _gtk_marshal_VOID__VOID,
		  G_TYPE_NONE, 0);
175
  widget_class->activate_signal = menu_item_signals[ACTIVATE];
Elliot Lee's avatar
Elliot Lee committed
176

177
  menu_item_signals[ACTIVATE_ITEM] =
Manish Singh's avatar
Manish Singh committed
178 179 180 181 182 183 184
    g_signal_new ("activate_item",
		  G_OBJECT_CLASS_TYPE (gobject_class),
		  G_SIGNAL_RUN_FIRST,
		  G_STRUCT_OFFSET (GtkMenuItemClass, activate_item),
		  NULL, NULL,
		  _gtk_marshal_VOID__VOID,
		  G_TYPE_NONE, 0);
185

186
  menu_item_signals[TOGGLE_SIZE_REQUEST] =
Manish Singh's avatar
Manish Singh committed
187 188 189 190 191 192 193 194
    g_signal_new ("toggle_size_request",
		  G_OBJECT_CLASS_TYPE (gobject_class),
		  G_SIGNAL_RUN_FIRST,
		  G_STRUCT_OFFSET (GtkMenuItemClass, toggle_size_request),
		  NULL, NULL,
		  _gtk_marshal_VOID__POINTER,
		  G_TYPE_NONE, 1,
		  G_TYPE_POINTER);
195 196

  menu_item_signals[TOGGLE_SIZE_ALLOCATE] =
Manish Singh's avatar
Manish Singh committed
197 198 199 200 201 202 203 204
    g_signal_new ("toggle_size_allocate",
		  G_OBJECT_CLASS_TYPE (gobject_class),
		  G_SIGNAL_RUN_FIRST,
		  G_STRUCT_OFFSET (GtkMenuItemClass, toggle_size_allocate),
		  NULL, NULL,
		  _gtk_marshal_NONE__INT,
		  G_TYPE_NONE, 1,
		  G_TYPE_INT);
205 206 207 208 209 210 211 212 213

  gtk_widget_class_install_style_property_parser (widget_class,
						  g_param_spec_enum ("selected_shadow_type",
								     "Selected Shadow Type",
								     "Shadow type when item is selected",
								     GTK_TYPE_SHADOW_TYPE,
								     GTK_SHADOW_OUT,
								     G_PARAM_READABLE),
						  gtk_rc_property_parse_enum);
Elliot Lee's avatar
Elliot Lee committed
214 215 216 217 218
}

static void
gtk_menu_item_init (GtkMenuItem *menu_item)
{
219 220
  GTK_WIDGET_SET_FLAGS (menu_item, GTK_NO_WINDOW);
  
Elliot Lee's avatar
Elliot Lee committed
221 222
  menu_item->submenu = NULL;
  menu_item->toggle_size = 0;
223
  menu_item->accelerator_width = 0;
Elliot Lee's avatar
Elliot Lee committed
224 225 226 227 228 229 230 231 232
  menu_item->show_submenu_indicator = FALSE;
  menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
  menu_item->submenu_placement = GTK_TOP_BOTTOM;
  menu_item->right_justify = FALSE;

  menu_item->timer = 0;
}

GtkWidget*
233
gtk_menu_item_new (void)
Elliot Lee's avatar
Elliot Lee committed
234
{
Manish Singh's avatar
Manish Singh committed
235
  return g_object_new (GTK_TYPE_MENU_ITEM, NULL);
Elliot Lee's avatar
Elliot Lee committed
236 237 238 239 240 241
}

GtkWidget*
gtk_menu_item_new_with_label (const gchar *label)
{
  GtkWidget *menu_item;
Tim Janik's avatar
Tim Janik committed
242
  GtkWidget *accel_label;
Elliot Lee's avatar
Elliot Lee committed
243 244

  menu_item = gtk_menu_item_new ();
Tim Janik's avatar
Tim Janik committed
245 246
  accel_label = gtk_accel_label_new (label);
  gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);
Elliot Lee's avatar
Elliot Lee committed
247

Tim Janik's avatar
Tim Janik committed
248 249 250
  gtk_container_add (GTK_CONTAINER (menu_item), accel_label);
  gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label), menu_item);
  gtk_widget_show (accel_label);
Elliot Lee's avatar
Elliot Lee committed
251 252 253 254

  return menu_item;
}

255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272

/**
 * gtk_menu_item_new_with_mnemonic:
 * @label: The text of the button, with an underscore in front of the
 *         mnemonic character
 * @returns: a new #GtkMenuItem
 *
 * Creates a new #GtkMenuItem containing a label. The label
 * will be created using gtk_label_new_with_mnemonic(), so underscores
 * in @label indicate the mnemonic for the menu item.
 **/
GtkWidget*
gtk_menu_item_new_with_mnemonic (const gchar *label)
{
  GtkWidget *menu_item;
  GtkWidget *accel_label;

  menu_item = gtk_menu_item_new ();
Manish Singh's avatar
Manish Singh committed
273
  accel_label = g_object_new (GTK_TYPE_ACCEL_LABEL, NULL);
274 275 276 277 278 279 280 281 282 283
  gtk_label_set_text_with_mnemonic (GTK_LABEL (accel_label), label);
  gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);

  gtk_container_add (GTK_CONTAINER (menu_item), accel_label);
  gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label), menu_item);
  gtk_widget_show (accel_label);

  return menu_item;
}

Elliot Lee's avatar
Elliot Lee committed
284 285 286 287 288 289 290 291 292 293
static void
gtk_menu_item_destroy (GtkObject *object)
{
  GtkMenuItem *menu_item;

  g_return_if_fail (GTK_IS_MENU_ITEM (object));

  menu_item = GTK_MENU_ITEM (object);

  if (menu_item->submenu)
294
    gtk_widget_destroy (menu_item->submenu);
Elliot Lee's avatar
Elliot Lee committed
295

296 297 298 299 300 301 302 303 304 305 306
  GTK_OBJECT_CLASS (parent_class)->destroy (object);
}

static void
gtk_menu_item_finalize (GObject *object)
{
  GtkMenuItem *menu_item = GTK_MENU_ITEM (object);

  g_free (menu_item->accel_path);

  G_OBJECT_CLASS (parent_class)->finalize (object);
Elliot Lee's avatar
Elliot Lee committed
307 308
}

309 310 311 312 313 314 315 316 317 318 319 320 321 322
static void
gtk_menu_item_detacher (GtkWidget     *widget,
			GtkMenu       *menu)
{
  GtkMenuItem *menu_item;

  g_return_if_fail (GTK_IS_MENU_ITEM (widget));

  menu_item = GTK_MENU_ITEM (widget);
  g_return_if_fail (menu_item->submenu == (GtkWidget*) menu);

  menu_item->submenu = NULL;
}

Elliot Lee's avatar
Elliot Lee committed
323 324 325 326 327
void
gtk_menu_item_set_submenu (GtkMenuItem *menu_item,
			   GtkWidget   *submenu)
{
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
328
  
329
  if (menu_item->submenu != submenu)
Elliot Lee's avatar
Elliot Lee committed
330
    {
331 332
      gtk_menu_item_remove_submenu (menu_item);
      
333
      menu_item->submenu = submenu;
334 335 336 337
      gtk_menu_attach_to_widget (GTK_MENU (submenu),
				 GTK_WIDGET (menu_item),
				 gtk_menu_item_detacher);
      
338 339
      if (GTK_WIDGET (menu_item)->parent)
	gtk_widget_queue_resize (GTK_WIDGET (menu_item));
Elliot Lee's avatar
Elliot Lee committed
340 341 342
    }
}

343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359
/**
 * gtk_menu_item_get_submenu:
 * @menu_item: a #GtkMenuItem
 *
 * Gets the submenu underneath this menu item, if any. See
 * gtk_menu_item_set_submenu().
 *
 * Return value: submenu for this menu item, or %NULL if none.
 **/
GtkWidget *
gtk_menu_item_get_submenu (GtkMenuItem *menu_item)
{
  g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), NULL);

  return menu_item->submenu;
}

360 361 362 363 364 365 366 367 368
void
gtk_menu_item_remove_submenu (GtkMenuItem         *menu_item)
{
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
      
  if (menu_item->submenu)
    gtk_menu_detach (GTK_MENU (menu_item->submenu));
}

369 370 371
void _gtk_menu_item_set_placement (GtkMenuItem         *menu_item,
				   GtkSubmenuPlacement  placement);

Elliot Lee's avatar
Elliot Lee committed
372
void
Owen Taylor's avatar
Owen Taylor committed
373
_gtk_menu_item_set_placement (GtkMenuItem         *menu_item,
Elliot Lee's avatar
Elliot Lee committed
374 375 376 377 378 379 380 381 382 383
			     GtkSubmenuPlacement  placement)
{
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));

  menu_item->submenu_placement = placement;
}

void
gtk_menu_item_select (GtkMenuItem *menu_item)
{
384 385
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
  
Elliot Lee's avatar
Elliot Lee committed
386 387 388 389 390 391
  gtk_item_select (GTK_ITEM (menu_item));
}

void
gtk_menu_item_deselect (GtkMenuItem *menu_item)
{
392 393
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
  
Elliot Lee's avatar
Elliot Lee committed
394 395 396 397 398 399
  gtk_item_deselect (GTK_ITEM (menu_item));
}

void
gtk_menu_item_activate (GtkMenuItem *menu_item)
{
400 401
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
  
Manish Singh's avatar
Manish Singh committed
402
  g_signal_emit (menu_item, menu_item_signals[ACTIVATE], 0);
Elliot Lee's avatar
Elliot Lee committed
403 404
}

405 406
void
gtk_menu_item_toggle_size_request (GtkMenuItem *menu_item,
407
				   gint        *requisition)
408 409 410
{
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));

Manish Singh's avatar
Manish Singh committed
411
  g_signal_emit (menu_item, menu_item_signals[TOGGLE_SIZE_REQUEST], 0, requisition);
412 413 414 415
}

void
gtk_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
416
				    gint         allocation)
417 418 419
{
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));

Manish Singh's avatar
Manish Singh committed
420
  g_signal_emit (menu_item, menu_item_signals[TOGGLE_SIZE_ALLOCATE], 0, allocation);
421 422
}

423 424 425 426 427 428 429 430 431 432
static void
gtk_menu_item_accel_width_foreach (GtkWidget *widget,
				   gpointer data)
{
  guint *width = data;

  if (GTK_IS_ACCEL_LABEL (widget))
    {
      guint w;

433
      w = gtk_accel_label_get_accel_width (GTK_ACCEL_LABEL (widget));
434 435 436 437 438 439 440
      *width = MAX (*width, w);
    }
  else if (GTK_IS_CONTAINER (widget))
    gtk_container_foreach (GTK_CONTAINER (widget),
			   gtk_menu_item_accel_width_foreach,
			   data);
}
Elliot Lee's avatar
Elliot Lee committed
441 442 443 444 445

static void
gtk_menu_item_size_request (GtkWidget      *widget,
			    GtkRequisition *requisition)
{
Tim Janik's avatar
Tim Janik committed
446
  GtkMenuItem *menu_item;
Elliot Lee's avatar
Elliot Lee committed
447
  GtkBin *bin;
448
  guint accel_width;
Elliot Lee's avatar
Elliot Lee committed
449 450 451 452 453

  g_return_if_fail (GTK_IS_MENU_ITEM (widget));
  g_return_if_fail (requisition != NULL);

  bin = GTK_BIN (widget);
Tim Janik's avatar
Tim Janik committed
454
  menu_item = GTK_MENU_ITEM (widget);
Elliot Lee's avatar
Elliot Lee committed
455 456

  requisition->width = (GTK_CONTAINER (widget)->border_width +
457
			widget->style->xthickness +
Elliot Lee's avatar
Elliot Lee committed
458 459
			BORDER_SPACING) * 2;
  requisition->height = (GTK_CONTAINER (widget)->border_width +
460
			 widget->style->ythickness) * 2;
Elliot Lee's avatar
Elliot Lee committed
461 462 463

  if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
    {
464 465 466
      GtkRequisition child_requisition;
      
      gtk_widget_size_request (bin->child, &child_requisition);
Elliot Lee's avatar
Elliot Lee committed
467

468 469
      requisition->width += child_requisition.width;
      requisition->height += child_requisition.height;
470

471 472 473
      if (menu_item->submenu && menu_item->show_submenu_indicator)
	requisition->width += child_requisition.height;
    }
474 475 476 477 478 479

  accel_width = 0;
  gtk_container_foreach (GTK_CONTAINER (menu_item),
			 gtk_menu_item_accel_width_foreach,
			 &accel_width);
  menu_item->accelerator_width = accel_width;
Elliot Lee's avatar
Elliot Lee committed
480 481 482 483 484 485
}

static void
gtk_menu_item_size_allocate (GtkWidget     *widget,
			     GtkAllocation *allocation)
{
Tim Janik's avatar
Tim Janik committed
486
  GtkMenuItem *menu_item;
Elliot Lee's avatar
Elliot Lee committed
487 488 489 490 491 492
  GtkBin *bin;
  GtkAllocation child_allocation;

  g_return_if_fail (GTK_IS_MENU_ITEM (widget));
  g_return_if_fail (allocation != NULL);

Tim Janik's avatar
Tim Janik committed
493
  menu_item = GTK_MENU_ITEM (widget);
Elliot Lee's avatar
Elliot Lee committed
494
  bin = GTK_BIN (widget);
Tim Janik's avatar
Tim Janik committed
495 496
  
  widget->allocation = *allocation;
Elliot Lee's avatar
Elliot Lee committed
497 498 499

  if (bin->child)
    {
500 501
      GtkRequisition child_requisition;
      
Elliot Lee's avatar
Elliot Lee committed
502
      child_allocation.x = (GTK_CONTAINER (widget)->border_width +
503
                            widget->style->xthickness +
Elliot Lee's avatar
Elliot Lee committed
504
			    BORDER_SPACING);
Owen Taylor's avatar
Owen Taylor committed
505
      child_allocation.y = (GTK_CONTAINER (widget)->border_width +
506
			    widget->style->ythickness);
507 508
      child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2);
      child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
Elliot Lee's avatar
Elliot Lee committed
509
      child_allocation.x += GTK_MENU_ITEM (widget)->toggle_size;
Tim Janik's avatar
Tim Janik committed
510
      child_allocation.width -= GTK_MENU_ITEM (widget)->toggle_size;
511 512
      child_allocation.x += widget->allocation.x;
      child_allocation.y += widget->allocation.y;
513 514

      gtk_widget_get_child_requisition (bin->child, &child_requisition);
Tim Janik's avatar
Tim Janik committed
515
      if (menu_item->submenu && menu_item->show_submenu_indicator)
516
	child_allocation.width -= child_requisition.height;
517

518 519 520
      if (child_allocation.width < 1)
	child_allocation.width = 1;

Elliot Lee's avatar
Elliot Lee committed
521 522 523
      gtk_widget_size_allocate (bin->child, &child_allocation);
    }

Tim Janik's avatar
Tim Janik committed
524
  if (GTK_WIDGET_REALIZED (widget))
525
    gdk_window_move_resize (menu_item->event_window,
Tim Janik's avatar
Tim Janik committed
526 527
                            allocation->x, allocation->y,
                            allocation->width, allocation->height);
Elliot Lee's avatar
Elliot Lee committed
528

Tim Janik's avatar
Tim Janik committed
529 530
  if (menu_item->submenu)
    gtk_menu_reposition (GTK_MENU (menu_item->submenu));
Elliot Lee's avatar
Elliot Lee committed
531 532
}

533 534 535 536 537 538 539 540 541 542
static void
gtk_menu_item_realize (GtkWidget *widget)
{
  GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
  GdkWindowAttr attributes;
  gint attributes_mask;

  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);

  widget->window = gtk_widget_get_parent_window (widget);
Manish Singh's avatar
Manish Singh committed
543
  g_object_ref (widget->window);
544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584
  
  attributes.x = widget->allocation.x;
  attributes.y = widget->allocation.y;
  attributes.width = widget->allocation.width;
  attributes.height = widget->allocation.height;
  attributes.window_type = GDK_WINDOW_CHILD;
  attributes.wclass = GDK_INPUT_ONLY;
  attributes.event_mask = (gtk_widget_get_events (widget) |
			   GDK_EXPOSURE_MASK |
			   GDK_BUTTON_PRESS_MASK |
			   GDK_BUTTON_RELEASE_MASK |
			   GDK_ENTER_NOTIFY_MASK |
			   GDK_LEAVE_NOTIFY_MASK |
			   GDK_POINTER_MOTION_MASK);

  attributes_mask = GDK_WA_X | GDK_WA_Y;
  menu_item->event_window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
  gdk_window_set_user_data (menu_item->event_window, widget);

  widget->style = gtk_style_attach (widget->style, widget->window);
}

static void
gtk_menu_item_unrealize (GtkWidget *widget)
{
  GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);

  gdk_window_set_user_data (menu_item->event_window, NULL);
  gdk_window_destroy (menu_item->event_window);
  menu_item->event_window = NULL;
  
  if (GTK_WIDGET_CLASS (parent_class)->unrealize)
    (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}

static void
gtk_menu_item_map (GtkWidget *widget)
{
  GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
  
  GTK_WIDGET_CLASS (parent_class)->map (widget);
585 586

  gdk_window_show (menu_item->event_window);
587 588 589 590 591 592 593 594 595 596 597 598
}

static void
gtk_menu_item_unmap (GtkWidget *widget)
{
  GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
    
  gdk_window_hide (menu_item->event_window);

  GTK_WIDGET_CLASS (parent_class)->unmap (widget);
}

Elliot Lee's avatar
Elliot Lee committed
599 600 601 602 603 604
static void
gtk_menu_item_paint (GtkWidget    *widget,
		     GdkRectangle *area)
{
  GtkMenuItem *menu_item;
  GtkStateType state_type;
605
  GtkShadowType shadow_type, selected_shadow_type;
Elliot Lee's avatar
Elliot Lee committed
606 607
  gint width, height;
  gint x, y;
608
  gint border_width = GTK_CONTAINER (widget)->border_width;
Elliot Lee's avatar
Elliot Lee committed
609 610 611 612 613 614 615

  if (GTK_WIDGET_DRAWABLE (widget))
    {
      menu_item = GTK_MENU_ITEM (widget);

      state_type = widget->state;

616 617 618 619
      x = widget->allocation.x + border_width;
      y = widget->allocation.y + border_width;
      width = widget->allocation.width - border_width * 2;
      height = widget->allocation.height - border_width * 2;
620
      
Elliot Lee's avatar
Elliot Lee committed
621 622
      if ((state_type == GTK_STATE_PRELIGHT) &&
	  (GTK_BIN (menu_item)->child))
623 624 625 626 627 628 629 630 631 632 633 634
	{
	  gtk_widget_style_get (widget,
				"selected_shadow_type", &selected_shadow_type,
				NULL);
	  gtk_paint_box (widget->style,
			 widget->window,
			 GTK_STATE_PRELIGHT,
			 selected_shadow_type,
			 area, widget, "menuitem",
			 x, y, width, height);
	}
  
Tim Janik's avatar
Tim Janik committed
635
      if (menu_item->submenu && menu_item->show_submenu_indicator)
Elliot Lee's avatar
Elliot Lee committed
636
	{
637
	  GtkRequisition child_requisition;
638
	  gint arrow_x, arrow_y;
639 640 641 642 643 644 645 646
	  gint arrow_size;
	  gint arrow_extent;

	  gtk_widget_get_child_requisition (GTK_BIN (menu_item)->child,
					    &child_requisition);

	  arrow_size = child_requisition.height - 2 * widget->style->ythickness;
	  arrow_extent = arrow_size * 0.6;
647
	  
Elliot Lee's avatar
Elliot Lee committed
648 649 650 651
	  shadow_type = GTK_SHADOW_OUT;
	  if (state_type == GTK_STATE_PRELIGHT)
	    shadow_type = GTK_SHADOW_IN;

652 653 654
	  arrow_x = x + width - 1 - arrow_size + (arrow_size - arrow_extent) / 2;
	  arrow_y = y + (height - arrow_extent) / 2;

655 656 657 658
	  gtk_paint_arrow (widget->style, widget->window,
			   state_type, shadow_type, 
			   area, widget, "menuitem", 
			   GTK_ARROW_RIGHT, TRUE,
659 660
			   arrow_x, arrow_y,
			   arrow_extent, arrow_extent);
Elliot Lee's avatar
Elliot Lee committed
661 662 663
	}
      else if (!GTK_BIN (menu_item)->child)
	{
664 665 666 667
	  gtk_paint_hline (widget->style, widget->window, GTK_STATE_NORMAL,
			   area, widget, "menuitem",
			   widget->allocation.x, widget->allocation.width,
			   widget->allocation.y);
Elliot Lee's avatar
Elliot Lee committed
668 669 670 671 672 673 674 675 676 677 678 679 680 681 682
	}
    }
}

static gint
gtk_menu_item_expose (GtkWidget      *widget,
		      GdkEventExpose *event)
{
  g_return_val_if_fail (GTK_IS_MENU_ITEM (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  if (GTK_WIDGET_DRAWABLE (widget))
    {
      gtk_menu_item_paint (widget, &event->area);

683
      (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
Elliot Lee's avatar
Elliot Lee committed
684 685 686 687 688
    }

  return FALSE;
}

689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709
static gint
get_popup_delay (GtkMenuItem *menu_item)
{
  GtkWidget *parent = GTK_WIDGET (menu_item)->parent;

  if (GTK_IS_MENU_SHELL (parent))
    {
      return _gtk_menu_shell_get_popup_delay (GTK_MENU_SHELL (parent));
    }
  else
    {
      gint popup_delay;
      
      g_object_get (G_OBJECT (gtk_widget_get_settings (GTK_WIDGET (menu_item))),
		    "gtk-menu-popup-delay", &popup_delay,
		    NULL);

      return popup_delay;
    }
}

Elliot Lee's avatar
Elliot Lee committed
710 711 712 713 714 715 716 717 718
static void
gtk_real_menu_item_select (GtkItem *item)
{
  GtkMenuItem *menu_item;

  g_return_if_fail (GTK_IS_MENU_ITEM (item));

  menu_item = GTK_MENU_ITEM (item);

719 720
  if (menu_item->submenu)
    {
721 722
      gint popup_delay;
      GtkWidget *parent;
723

724 725 726 727 728 729
      if (menu_item->timer)
	gtk_timeout_remove (menu_item->timer);

      popup_delay = get_popup_delay (menu_item);
      
      if (popup_delay > 0)
730
	{
731 732 733 734 735
	  GdkEvent *event = gtk_get_current_event ();
	  
	  menu_item->timer = gtk_timeout_add (popup_delay,
					      gtk_menu_item_select_timeout,
					      menu_item);
736 737 738 739 740 741
	  if (event &&
	      event->type != GDK_BUTTON_PRESS &&
	      event->type != GDK_ENTER_NOTIFY)
	    menu_item->timer_from_keypress = TRUE;
	  else
	    menu_item->timer_from_keypress = FALSE;
742 743 744

	  if (event)
	    gdk_event_free(event);
745
	}
746
      else
747
	gtk_menu_item_popup_submenu (menu_item);
748
    }
749
  
Elliot Lee's avatar
Elliot Lee committed
750
  gtk_widget_set_state (GTK_WIDGET (menu_item), GTK_STATE_PRELIGHT);
Soeren Sandmann's avatar
Soeren Sandmann committed
751
  gtk_widget_queue_draw (GTK_WIDGET (menu_item));
Elliot Lee's avatar
Elliot Lee committed
752 753 754 755 756 757 758 759 760 761 762 763 764 765
}

static void
gtk_real_menu_item_deselect (GtkItem *item)
{
  GtkMenuItem *menu_item;

  g_return_if_fail (GTK_IS_MENU_ITEM (item));

  menu_item = GTK_MENU_ITEM (item);

  if (menu_item->submenu)
    {
      if (menu_item->timer)
766 767 768 769
	{
	  gtk_timeout_remove (menu_item->timer);
	  menu_item->timer = 0;
	}
Elliot Lee's avatar
Elliot Lee committed
770 771 772 773 774
      else
	gtk_menu_popdown (GTK_MENU (menu_item->submenu));
    }

  gtk_widget_set_state (GTK_WIDGET (menu_item), GTK_STATE_NORMAL);
Soeren Sandmann's avatar
Soeren Sandmann committed
775
  gtk_widget_queue_draw (GTK_WIDGET (menu_item));
Elliot Lee's avatar
Elliot Lee committed
776 777
}

778
static gboolean
779
gtk_menu_item_mnemonic_activate (GtkWidget *widget,
780 781 782 783 784 785 786 787 788 789 790
				 gboolean   group_cycling)
{
  if (group_cycling)
    {
      if (widget->parent &&
	  GTK_IS_MENU_SHELL (widget->parent))
	gtk_menu_shell_select_item (GTK_MENU_SHELL (widget->parent),
				    widget);

    }
  else
Manish Singh's avatar
Manish Singh committed
791
    g_signal_emit (widget, menu_item_signals[ACTIVATE_ITEM], 0);
792 793 794 795 796
  
  return TRUE;
}


797 798 799 800
static void
gtk_real_menu_item_activate_item (GtkMenuItem *menu_item)
{
  GtkWidget *widget;
801
  GtkMenuShell *submenu; 
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816

  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));

  widget = GTK_WIDGET (menu_item);
  
  if (widget->parent &&
      GTK_IS_MENU_SHELL (widget->parent))
    {
      if (menu_item->submenu == NULL)
	gtk_menu_shell_activate_item (GTK_MENU_SHELL (widget->parent),
				      widget, TRUE);
      else
	{
	  GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget->parent);

817
	  _gtk_menu_shell_activate (menu_shell);
818

819 820 821
	  gtk_menu_shell_select_item (GTK_MENU_SHELL (widget->parent), widget); 
	  gtk_menu_item_popup_submenu (widget); 

822
	  gtk_menu_shell_select_first (GTK_MENU_SHELL (menu_item->submenu), FALSE);
823
	  submenu = GTK_MENU_SHELL (menu_item->submenu);
824 825 826
	}
    }
}
827 828
static void
gtk_real_menu_item_toggle_size_request (GtkMenuItem *menu_item,
829
					gint        *requisition)
830 831 832 833 834 835 836 837
{
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));

  *requisition = 0;
}

static void
gtk_real_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
838
					 gint         allocation)
839 840 841 842 843
{
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));

  menu_item->toggle_size = allocation;
}
844

Elliot Lee's avatar
Elliot Lee committed
845 846 847
static gint
gtk_menu_item_select_timeout (gpointer data)
{
848
  GtkMenuItem *menu_item;
849
  GtkWidget *parent;
850
  
851
  GDK_THREADS_ENTER ();
852

853
  menu_item = GTK_MENU_ITEM (data);
854 855 856 857 858 859 860 861 862

  parent = GTK_WIDGET (menu_item)->parent;

  if (parent && GTK_IS_MENU_SHELL (parent) && GTK_MENU_SHELL (parent)->active)
    {
      gtk_menu_item_popup_submenu (data);
      if (menu_item->timer_from_keypress && menu_item->submenu)
	GTK_MENU_SHELL (menu_item->submenu)->ignore_enter = TRUE;
    }
863 864 865 866 867 868 869

  GDK_THREADS_LEAVE ();

  return FALSE;  
}

static void
870
gtk_menu_item_popup_submenu (gpointer data)
871 872 873
{
  GtkMenuItem *menu_item;

Elliot Lee's avatar
Elliot Lee committed
874
  menu_item = GTK_MENU_ITEM (data);
875 876 877

  if (menu_item->timer)
    gtk_timeout_remove (menu_item->timer);
Elliot Lee's avatar
Elliot Lee committed
878 879
  menu_item->timer = 0;

880
  if (GTK_WIDGET_IS_SENSITIVE (menu_item->submenu))
881
    {
882 883 884 885 886 887 888
      gtk_menu_popup (GTK_MENU (menu_item->submenu),
		      GTK_WIDGET (menu_item)->parent,
		      GTK_WIDGET (menu_item),
		      gtk_menu_item_position_menu,
		      menu_item,
		      GTK_MENU_SHELL (GTK_WIDGET (menu_item)->parent)->button,
		      0);
889
    }
Elliot Lee's avatar
Elliot Lee committed
890 891 892 893 894 895
}

static void
gtk_menu_item_position_menu (GtkMenu  *menu,
			     gint     *x,
			     gint     *y,
896
			     gboolean *push_in,
Elliot Lee's avatar
Elliot Lee committed
897 898 899
			     gpointer  user_data)
{
  GtkMenuItem *menu_item;
900
  GtkWidget *widget;
Tim Janik's avatar
Tim Janik committed
901
  GtkWidget *parent_menu_item;
902
  GdkScreen *screen;
Elliot Lee's avatar
Elliot Lee committed
903 904 905 906 907 908 909 910 911 912
  gint screen_width;
  gint screen_height;
  gint twidth, theight;
  gint tx, ty;

  g_return_if_fail (menu != NULL);
  g_return_if_fail (x != NULL);
  g_return_if_fail (y != NULL);

  menu_item = GTK_MENU_ITEM (user_data);
913
  widget = GTK_WIDGET (user_data);
Elliot Lee's avatar
Elliot Lee committed
914 915 916 917

  twidth = GTK_WIDGET (menu)->requisition.width;
  theight = GTK_WIDGET (menu)->requisition.height;

918 919 920
  screen = gtk_widget_get_screen (widget);
  screen_width = gdk_screen_get_width (screen);
  screen_height = gdk_screen_get_height (screen);
Elliot Lee's avatar
Elliot Lee committed
921

922
  if (!gdk_window_get_origin (widget->window, &tx, &ty))
Owen Taylor's avatar
Owen Taylor committed
923 924 925 926
    {
      g_warning ("Menu not on screen");
      return;
    }
Elliot Lee's avatar
Elliot Lee committed
927

928 929 930
  tx += widget->allocation.x;
  ty += widget->allocation.y;

Elliot Lee's avatar
Elliot Lee committed
931 932 933
  switch (menu_item->submenu_placement)
    {
    case GTK_TOP_BOTTOM:
934 935
      if ((ty + widget->allocation.height + theight) <= screen_height)
	ty += widget->allocation.height;
Elliot Lee's avatar
Elliot Lee committed
936 937
      else if ((ty - theight) >= 0)
	ty -= theight;
938 939
      else if (screen_height - (ty + widget->allocation.height) > ty)
	ty += widget->allocation.height;
940 941
      else
	ty -= theight;
Elliot Lee's avatar
Elliot Lee committed
942 943 944 945
      break;

    case GTK_LEFT_RIGHT:
      menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
946
      parent_menu_item = GTK_MENU (widget->parent)->parent_menu_item;
Elliot Lee's avatar
Elliot Lee committed
947
      if (parent_menu_item)
Tim Janik's avatar
Tim Janik committed
948
	menu_item->submenu_direction = GTK_MENU_ITEM (parent_menu_item)->submenu_direction;
Elliot Lee's avatar
Elliot Lee committed
949 950 951 952 953 954 955 956 957

      switch (menu_item->submenu_direction)
	{
	case GTK_DIRECTION_LEFT:
	  if ((tx - twidth) >= 0)
	    tx -= twidth;
	  else
	    {
	      menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
958
	      tx += widget->allocation.width - 5;
Elliot Lee's avatar
Elliot Lee committed
959 960 961 962
	    }
	  break;

	case GTK_DIRECTION_RIGHT:
963 964
	  if ((tx + widget->allocation.width + twidth - 5) <= screen_width)
	    tx += widget->allocation.width - 5;
Elliot Lee's avatar
Elliot Lee committed
965 966 967 968 969 970 971 972
	  else
	    {
	      menu_item->submenu_direction = GTK_DIRECTION_LEFT;
	      tx -= twidth;
	    }
	  break;
	}

973
      ty += widget->allocation.height / 4;
974

975 976
      /* If the height of the menu doesn't fit we move it upward. */
      ty = CLAMP (ty, 0, MAX (0, screen_height - theight));
Elliot Lee's avatar
Elliot Lee committed
977 978 979
      break;
    }

980 981
  /* If we have negative, tx, here it is because we can't get
   * the menu all the way on screen. Favor the left portion.
982 983
   */
  *x = CLAMP (tx, 0, MAX (0, screen_width - twidth));
984
  *y = ty;
Elliot Lee's avatar
Elliot Lee committed
985 986
}

987 988 989 990 991 992 993 994 995 996 997 998
/**
 * gtk_menu_item_set_right_justified:
 * @menu_item: a #GtkMenuItem.
 * @right_justified: if %TRUE the menu item will appear at the 
 *   far right if added to a menu bar.
 * 
 * Sets whether the menu item appears justified at the right
 * side of a menu bar. This was traditionally done for "Help" menu
 * items, but is now considered a bad idea. (If the widget
 * layout is reversed for a right-to-left language like Hebrew
 * or Arabic, right-justified-menu-items appear at the left.)
 **/
Elliot Lee's avatar
Elliot Lee committed
999
void
1000 1001
gtk_menu_item_set_right_justified (GtkMenuItem *menu_item,
				   gboolean     right_justified)
Elliot Lee's avatar
Elliot Lee committed
1002
{
1003 1004 1005
  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));

  right_justified = right_justified != FALSE;
Elliot Lee's avatar
Elliot Lee committed
1006

1007 1008 1009
  if (right_justified != menu_item->right_justify)
    {
      menu_item->right_justify = right_justified;
1010
      gtk_widget_queue_resize (GTK_WIDGET (menu_item));
1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029
    }
}

/**
 * gtk_menu_item_get_right_justified:
 * @menu_item: a #GtkMenuItem
 * 
 * Gets whether the menu item appears justified at the right
 * side of the menu bar.
 * 
 * Return value: %TRUE if the menu item will appear at the
 *   far right if added to a menu bar.
 **/
gboolean
gtk_menu_item_get_right_justified (GtkMenuItem *menu_item)
{
  g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), FALSE);
  
  return menu_item->right_justify;
Elliot Lee's avatar
Elliot Lee committed
1030
}
1031

1032

1033 1034 1035
static void
gtk_menu_item_show_all (GtkWidget *widget)
{
1036
  GtkMenuItem *menu_item;
1037 1038

  g_return_if_fail (GTK_IS_MENU_ITEM (widget));
1039

1040 1041
  menu_item = GTK_MENU_ITEM (widget);

1042
  /* show children including submenu */
1043 1044
  if (menu_item->submenu)
    gtk_widget_show_all (menu_item->submenu);
1045 1046
  gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL);

1047 1048 1049 1050 1051 1052
  gtk_widget_show (widget);
}

static void
gtk_menu_item_hide_all (GtkWidget *widget)
{
1053
  GtkMenuItem *menu_item;
1054 1055 1056 1057

  g_return_if_fail (GTK_IS_MENU_ITEM (widget));

  gtk_widget_hide (widget);
1058 1059 1060 1061 1062

  menu_item = GTK_MENU_ITEM (widget);

  /* hide children including submenu */
  gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_hide_all, NULL);
1063 1064
  if (menu_item->submenu)
    gtk_widget_hide_all (menu_item->submenu);
1065 1066
}

1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087
static void
gtk_menu_item_accel_name_foreach (GtkWidget *widget,
				  gpointer data)
{
  const gchar **path_p = data;

  if (!*path_p)
    {
      if (GTK_IS_LABEL (widget))
	{
	  *path_p = gtk_label_get_text (GTK_LABEL (widget));
	  if (*path_p && (*path_p)[0] == 0)
	    *path_p = NULL;
	}
      else if (GTK_IS_CONTAINER (widget))
	gtk_container_foreach (GTK_CONTAINER (widget),
			       gtk_menu_item_accel_name_foreach,
			       data);
    }
}

1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104
static void
gtk_menu_item_parent_set (GtkWidget *widget,
			  GtkWidget *previous_parent)
{
  GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
  GtkMenu *menu = GTK_IS_MENU (widget->parent) ? GTK_MENU (widget->parent) : NULL;

  if (menu)
    _gtk_menu_item_refresh_accel_path (menu_item,
				       menu->accel_path,
				       menu->accel_group,
				       TRUE);

  if (GTK_WIDGET_CLASS (parent_class)->parent_set)
    GTK_WIDGET_CLASS (parent_class)->parent_set (widget, previous_parent);
}

1105 1106 1107 1108 1109 1110 1111 1112 1113 1114
void
_gtk_menu_item_refresh_accel_path (GtkMenuItem   *menu_item,
				   const gchar   *prefix,
				   GtkAccelGroup *accel_group,
				   gboolean       group_changed)
{
  const gchar *path;
  GtkWidget *widget;

  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1115
  g_return_if_fail (!accel_group || GTK_IS_ACCEL_GROUP (accel_group));
1116 1117 1118

  widget = GTK_WIDGET (menu_item);

1119 1120
  if (!accel_group)
    {
1121
      gtk_widget_set_accel_path (widget, NULL, NULL);
1122 1123 1124
      return;
    }

1125
  path = _gtk_widget_get_accel_path (widget, NULL);
1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140
  if (!path)					/* no active accel_path yet */
    {
      path = menu_item->accel_path;
      if (!path && prefix)
	{
	  gchar *postfix = NULL;

	  /* try to construct one from label text */
	  gtk_container_foreach (GTK_CONTAINER (menu_item),
				 gtk_menu_item_accel_name_foreach,
				 &postfix);
	  menu_item->accel_path = postfix ? g_strconcat (prefix, "/", postfix, NULL) : NULL;
	  path = menu_item->accel_path;
	}
      if (path)
1141
	gtk_widget_set_accel_path (widget, path, accel_group);
1142 1143
    }
  else if (group_changed)			/* reinstall accelerators */
1144
    gtk_widget_set_accel_path (widget, path, accel_group);
1145 1146 1147 1148 1149
}

/**
 * gtk_menu_item_set_accel_path
 * @menu_item:  a valid #GtkMenuItem
1150 1151
 * @accel_path: accelerator path, corresponding to this menu item's
 *              functionality, or %NULL to unset the current path.
1152 1153 1154 1155 1156 1157 1158 1159
 *
 * Set the accelerator path on @menu_item, through which runtime changes of the
 * menu item's accelerator caused by the user can be identified and saved to
 * persistant storage (see gtk_accel_map_save() on this).
 * To setup a default accelerator for this menu item, call
 * gtk_accel_map_add_entry() with the same @accel_path.
 * See also gtk_accel_map_add_entry() on the specifics of accelerator paths,
 * and gtk_menu_set_accel_path() for a more convenient variant of this function.
1160 1161 1162 1163
 *
 * This function is basically a convenience wrapper that handles calling
 * gtk_widget_set_accel_path() with the appropriate accelerator group for
 * the menu item.
Matthias Clasen's avatar
Matthias Clasen committed
1164 1165 1166
 *
 * Note that you do need to set an accelerator on the parent menu with
 * gtk_menu_set_accel_group() for this to work.
1167 1168 1169 1170 1171 1172 1173 1174
 */
void
gtk_menu_item_set_accel_path (GtkMenuItem *menu_item,
			      const gchar *accel_path)
{
  GtkWidget *widget;

  g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1175 1176
  g_return_if_fail (accel_path == NULL ||
		    (accel_path[0] == '<' && strchr (accel_path, '/')));
1177 1178 1179 1180 1181 1182 1183 1184

  widget = GTK_WIDGET (menu_item);

  /* store new path */
  g_free (menu_item->accel_path);
  menu_item->accel_path = g_strdup (accel_path);

  /* forget accelerators associated with old path */
1185
  gtk_widget_set_accel_path (widget, NULL, NULL);
1186 1187

  /* install accelerators associated with new path */
1188
  if (widget->parent && GTK_IS_MENU (widget->parent))
1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199
    {
      GtkMenu *menu = GTK_MENU (widget->parent);

      if (menu->accel_group)
	_gtk_menu_item_refresh_accel_path (GTK_MENU_ITEM (widget),
					   NULL,
					   menu->accel_group,
					   FALSE);
    }
}

1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215
static void
gtk_menu_item_forall (GtkContainer *container,
		      gboolean      include_internals,
		      GtkCallback   callback,
		      gpointer      callback_data)
{
  GtkBin *bin;
  GtkMenuItem *menu_item;

  g_return_if_fail (GTK_IS_MENU_ITEM (container));
  g_return_if_fail (callback != NULL);

  bin = GTK_BIN (container);
  menu_item = GTK_MENU_ITEM (container);

  if (bin->child)
1216
    callback (bin->child, callback_data);
1217
}
1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230

gboolean
_gtk_menu_item_is_selectable (GtkWidget *menu_item)
{
  if ((!GTK_BIN (menu_item)->child &&
       G_OBJECT_TYPE (menu_item) == GTK_TYPE_MENU_ITEM) ||
      GTK_IS_SEPARATOR_MENU_ITEM (menu_item) ||
      !GTK_WIDGET_IS_SENSITIVE (menu_item) ||
      !GTK_WIDGET_VISIBLE (menu_item))
    return FALSE;

  return TRUE;
}