Pileus Git - ~andy/gtk/blob - gtk/gtkmenuitem.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   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.
   8  *
   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.
  13  *
  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.
  18  */
  19
  20 /*
  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/.
  25  */
  26
  27 #define GTK_MENU_INTERNALS
  28
  29 #include <config.h>
  30 #include <string.h>
  31
  32 #include "gtkaccellabel.h"
  33 #include "gtkmain.h"
  34 #include "gtkmarshalers.h"
  35 #include "gtkmenu.h"
  36 #include "gtkmenubar.h"
  37 #include "gtkmenuitem.h"
  38 #include "gtkseparatormenuitem.h"
  39 #include "gtkprivate.h"
  40 #include "gtkintl.h"
  41 #include "gtkalias.h"
  42
  43 #define MENU_ITEM_CLASS(w)  GTK_MENU_ITEM_CLASS (GTK_OBJECT (w)->klass)
  44
  45 enum {
  46   ACTIVATE,
  47   ACTIVATE_ITEM,
  48   TOGGLE_SIZE_REQUEST,
  49   TOGGLE_SIZE_ALLOCATE,
  50   LAST_SIGNAL
  51 };
  52
  53 enum {
  54   PROP_0,
  55   PROP_RIGHT_JUSTIFIED,
  56   PROP_SUBMENU,
  57   PROP_ACCEL_PATH
  58 };
  59
  60
  61 static void gtk_menu_item_set_property   (GObject          *object,
  62                                           guint             prop_id,
  63                                           const GValue     *value,
  64                                           GParamSpec       *pspec);
  65 static void gtk_menu_item_get_property   (GObject          *object,
  66                                           guint             prop_id,
  67                                           GValue           *value,
  68                                           GParamSpec       *pspec);
  69 static void gtk_menu_item_destroy        (GtkObject        *object);
  70 static void gtk_menu_item_size_request   (GtkWidget        *widget,
  71                                           GtkRequisition   *requisition);
  72 static void gtk_menu_item_size_allocate  (GtkWidget        *widget,
  73                                           GtkAllocation    *allocation);
  74 static void gtk_menu_item_realize        (GtkWidget        *widget);
  75 static void gtk_menu_item_unrealize      (GtkWidget        *widget);
  76 static void gtk_menu_item_map            (GtkWidget        *widget);
  77 static void gtk_menu_item_unmap          (GtkWidget        *widget);
  78 static void gtk_menu_item_paint          (GtkWidget        *widget,
  79                                           GdkRectangle     *area);
  80 static gint gtk_menu_item_expose         (GtkWidget        *widget,
  81                                           GdkEventExpose   *event);
  82 static void gtk_menu_item_parent_set     (GtkWidget        *widget,
  83                                           GtkWidget        *previous_parent);
  84
  85
  86 static void gtk_real_menu_item_select               (GtkItem     *item);
  87 static void gtk_real_menu_item_deselect             (GtkItem     *item);
  88 static void gtk_real_menu_item_activate_item        (GtkMenuItem *item);
  89 static void gtk_real_menu_item_toggle_size_request  (GtkMenuItem *menu_item,
  90                                                      gint        *requisition);
  91 static void gtk_real_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
  92                                                      gint         allocation);
  93 static gboolean gtk_menu_item_mnemonic_activate     (GtkWidget   *widget,
  94                                                      gboolean     group_cycling);
  95
  96 static gint gtk_menu_item_popup_timeout  (gpointer          data);
  97 static void gtk_menu_item_position_menu  (GtkMenu          *menu,
  98                                           gint             *x,
  99                                           gint             *y,
 100                                           gboolean         *push_in,
 101                                           gpointer          user_data);
 102 static void gtk_menu_item_show_all       (GtkWidget        *widget);
 103 static void gtk_menu_item_hide_all       (GtkWidget        *widget);
 104 static void gtk_menu_item_forall         (GtkContainer    *container,
 105                                           gboolean         include_internals,
 106                                           GtkCallback      callback,
 107                                           gpointer         callback_data);
 108 static gboolean gtk_menu_item_can_activate_accel (GtkWidget *widget,
 109                                                   guint      signal_id);
 110
 111
 112 static guint menu_item_signals[LAST_SIGNAL] = { 0 };
 113
 114 G_DEFINE_TYPE (GtkMenuItem, gtk_menu_item, GTK_TYPE_ITEM)
 115
 116 static void
 117 gtk_menu_item_class_init (GtkMenuItemClass *klass)
 118 {
 119   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 120   GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);
 121   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 122   GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
 123   GtkItemClass *item_class = GTK_ITEM_CLASS (klass);
 124
 125   gobject_class->set_property = gtk_menu_item_set_property;
 126   gobject_class->get_property = gtk_menu_item_get_property;
 127
 128   object_class->destroy = gtk_menu_item_destroy;
 129
 130   widget_class->size_request = gtk_menu_item_size_request;
 131   widget_class->size_allocate = gtk_menu_item_size_allocate;
 132   widget_class->expose_event = gtk_menu_item_expose;
 133   widget_class->realize = gtk_menu_item_realize;
 134   widget_class->unrealize = gtk_menu_item_unrealize;
 135   widget_class->map = gtk_menu_item_map;
 136   widget_class->unmap = gtk_menu_item_unmap;
 137   widget_class->show_all = gtk_menu_item_show_all;
 138   widget_class->hide_all = gtk_menu_item_hide_all;
 139   widget_class->mnemonic_activate = gtk_menu_item_mnemonic_activate;
 140   widget_class->parent_set = gtk_menu_item_parent_set;
 141   widget_class->can_activate_accel = gtk_menu_item_can_activate_accel;
 142
 143   container_class->forall = gtk_menu_item_forall;
 144
 145   item_class->select = gtk_real_menu_item_select;
 146   item_class->deselect = gtk_real_menu_item_deselect;
 147
 148   klass->activate = NULL;
 149   klass->activate_item = gtk_real_menu_item_activate_item;
 150   klass->toggle_size_request = gtk_real_menu_item_toggle_size_request;
 151   klass->toggle_size_allocate = gtk_real_menu_item_toggle_size_allocate;
 152
 153   klass->hide_on_activate = TRUE;
 154
 155   menu_item_signals[ACTIVATE] =
 156     g_signal_new (I_("activate"),
 157                   G_OBJECT_CLASS_TYPE (gobject_class),
 158                   G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
 159                   G_STRUCT_OFFSET (GtkMenuItemClass, activate),
 160                   NULL, NULL,
 161                   _gtk_marshal_VOID__VOID,
 162                   G_TYPE_NONE, 0);
 163   widget_class->activate_signal = menu_item_signals[ACTIVATE];
 164
 165   menu_item_signals[ACTIVATE_ITEM] =
 166     g_signal_new (I_("activate_item"),
 167                   G_OBJECT_CLASS_TYPE (gobject_class),
 168                   G_SIGNAL_RUN_FIRST,
 169                   G_STRUCT_OFFSET (GtkMenuItemClass, activate_item),
 170                   NULL, NULL,
 171                   _gtk_marshal_VOID__VOID,
 172                   G_TYPE_NONE, 0);
 173
 174   menu_item_signals[TOGGLE_SIZE_REQUEST] =
 175     g_signal_new (I_("toggle_size_request"),
 176                   G_OBJECT_CLASS_TYPE (gobject_class),
 177                   G_SIGNAL_RUN_FIRST,
 178                   G_STRUCT_OFFSET (GtkMenuItemClass, toggle_size_request),
 179                   NULL, NULL,
 180                   _gtk_marshal_VOID__POINTER,
 181                   G_TYPE_NONE, 1,
 182                   G_TYPE_POINTER);
 183
 184   menu_item_signals[TOGGLE_SIZE_ALLOCATE] =
 185     g_signal_new (I_("toggle_size_allocate"),
 186                   G_OBJECT_CLASS_TYPE (gobject_class),
 187                   G_SIGNAL_RUN_FIRST,
 188                   G_STRUCT_OFFSET (GtkMenuItemClass, toggle_size_allocate),
 189                   NULL, NULL,
 190                   _gtk_marshal_NONE__INT,
 191                   G_TYPE_NONE, 1,
 192                   G_TYPE_INT);
 193
 194   /**
 195    * GtkMenuItem:right-justified:
 196    *
 197    * Sets whether the menu item appears justified at the right side of a menu bar.
 198    *
 199    * Since: 2.14
 200    **/
 201   g_object_class_install_property (gobject_class,
 202                                    PROP_RIGHT_JUSTIFIED,
 203                                    g_param_spec_boolean ("right-justified",
 204                                                          P_("Right Justified"),
 205                                                          P_("Sets whether the menu item appears justified at the right side of a menu bar"),
 206                                                          FALSE,
 207                                                          GTK_PARAM_READWRITE));
 208
 209   /**
 210    * GtkMenuItem:submenu:
 211    *
 212    * The submenu attached to the menu item, or NULL if it has none.
 213    *
 214    * Since: 2.12
 215    **/
 216   g_object_class_install_property (gobject_class,
 217                                    PROP_SUBMENU,
 218                                    g_param_spec_object ("submenu",
 219                                                         P_("Submenu"),
 220                                                         P_("The submenu attached to the menu item, or NULL if it has none"),
 221                                                         GTK_TYPE_MENU,
 222                                                         GTK_PARAM_READWRITE));
 223
 224   /**
 225    * GtkMenuItem:accel-path:
 226    *
 227    * Sets the accelerator path of the menu item, through which runtime
 228    * changes of the menu item's accelerator caused by the user can be
 229    * identified and saved to persistant storage.
 230    *
 231    * Since: 2.14
 232    **/
 233   g_object_class_install_property (gobject_class,
 234                                    PROP_ACCEL_PATH,
 235                                    g_param_spec_string ("accel-path",
 236                                                         P_("Accel Path"),
 237                                                         P_("Sets the accelerator path of the menu item"),
 238                                                         NULL,
 239                                                         GTK_PARAM_READWRITE));
 240
 241   gtk_widget_class_install_style_property_parser (widget_class,
 242                                                   g_param_spec_enum ("selected-shadow-type",
 243                                                                      "Selected Shadow Type",
 244                                                                      "Shadow type when item is selected",
 245                                                                      GTK_TYPE_SHADOW_TYPE,
 246                                                                      GTK_SHADOW_NONE,
 247                                                                      GTK_PARAM_READABLE),
 248                                                   gtk_rc_property_parse_enum);
 249
 250   gtk_widget_class_install_style_property (widget_class,
 251                                            g_param_spec_int ("horizontal-padding",
 252                                                              "Horizontal Padding",
 253                                                              "Padding to left and right of the menu item",
 254                                                              0,
 255                                                              G_MAXINT,
 256                                                              3,
 257                                                              GTK_PARAM_READABLE));
 258
 259   gtk_widget_class_install_style_property (widget_class,
 260                                            g_param_spec_int ("toggle-spacing",
 261                                                              "Icon Spacing",
 262                                                              "Space between icon and label",
 263                                                              0,
 264                                                              G_MAXINT,
 265                                                              5,
 266                                                              GTK_PARAM_READABLE));
 267
 268   gtk_widget_class_install_style_property (widget_class,
 269                                            g_param_spec_int ("arrow-spacing",
 270                                                              "Arrow Spacing",
 271                                                              "Space between label and arrow",
 272                                                              0,
 273                                                              G_MAXINT,
 274                                                              10,
 275                                                              GTK_PARAM_READABLE));
 276
 277   gtk_widget_class_install_style_property (widget_class,
 278                                            g_param_spec_float ("arrow-scaling",
 279                                                                P_("Arrow Scaling"),
 280                                                                P_("Amount of space used up by arrow, relative to the menu item's font size"),
 281                                                                0.0, 2.0, 0.8,
 282                                                                GTK_PARAM_READABLE));
 283 }
 284
 285 static void
 286 gtk_menu_item_init (GtkMenuItem *menu_item)
 287 {
 288   GTK_WIDGET_SET_FLAGS (menu_item, GTK_NO_WINDOW);
 289
 290   menu_item->submenu = NULL;
 291   menu_item->toggle_size = 0;
 292   menu_item->accelerator_width = 0;
 293   menu_item->show_submenu_indicator = FALSE;
 294   if (gtk_widget_get_direction (GTK_WIDGET (menu_item)) == GTK_TEXT_DIR_RTL)
 295     menu_item->submenu_direction = GTK_DIRECTION_LEFT;
 296   else
 297     menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
 298   menu_item->submenu_placement = GTK_TOP_BOTTOM;
 299   menu_item->right_justify = FALSE;
 300
 301   menu_item->timer = 0;
 302 }
 303
 304 GtkWidget*
 305 gtk_menu_item_new (void)
 306 {
 307   return g_object_new (GTK_TYPE_MENU_ITEM, NULL);
 308 }
 309
 310 GtkWidget*
 311 gtk_menu_item_new_with_label (const gchar *label)
 312 {
 313   GtkWidget *menu_item;
 314   GtkWidget *accel_label;
 315
 316   menu_item = gtk_menu_item_new ();
 317   accel_label = gtk_accel_label_new (label);
 318   gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);
 319
 320   gtk_container_add (GTK_CONTAINER (menu_item), accel_label);
 321   gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label), menu_item);
 322   gtk_widget_show (accel_label);
 323
 324   return menu_item;
 325 }
 326
 327
 328 /**
 329  * gtk_menu_item_new_with_mnemonic:
 330  * @label: The text of the button, with an underscore in front of the
 331  *         mnemonic character
 332  * @returns: a new #GtkMenuItem
 333  *
 334  * Creates a new #GtkMenuItem containing a label. The label
 335  * will be created using gtk_label_new_with_mnemonic(), so underscores
 336  * in @label indicate the mnemonic for the menu item.
 337  **/
 338 GtkWidget*
 339 gtk_menu_item_new_with_mnemonic (const gchar *label)
 340 {
 341   GtkWidget *menu_item;
 342   GtkWidget *accel_label;
 343
 344   menu_item = gtk_menu_item_new ();
 345   accel_label = g_object_new (GTK_TYPE_ACCEL_LABEL, NULL);
 346   gtk_label_set_text_with_mnemonic (GTK_LABEL (accel_label), label);
 347   gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);
 348
 349   gtk_container_add (GTK_CONTAINER (menu_item), accel_label);
 350   gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label), menu_item);
 351   gtk_widget_show (accel_label);
 352
 353   return menu_item;
 354 }
 355
 356 static void
 357 gtk_menu_item_set_property (GObject      *object,
 358                             guint         prop_id,
 359                             const GValue *value,
 360                             GParamSpec   *pspec)
 361 {
 362   GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
 363
 364   switch (prop_id)
 365     {
 366     case PROP_RIGHT_JUSTIFIED:
 367       gtk_menu_item_set_right_justified (menu_item, g_value_get_boolean (value));
 368       break;
 369     case PROP_SUBMENU:
 370       gtk_menu_item_set_submenu (menu_item, g_value_get_object (value));
 371       break;
 372     case PROP_ACCEL_PATH:
 373       gtk_menu_item_set_accel_path (menu_item, g_value_get_string (value));
 374       break;
 375
 376     default:
 377       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 378       break;
 379     }
 380 }
 381
 382 static void
 383 gtk_menu_item_get_property (GObject    *object,
 384                             guint       prop_id,
 385                             GValue     *value,
 386                             GParamSpec *pspec)
 387 {
 388   GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
 389
 390   switch (prop_id)
 391     {
 392     case PROP_RIGHT_JUSTIFIED:
 393       g_value_set_boolean (value, gtk_menu_item_get_right_justified (menu_item));
 394       break;
 395     case PROP_SUBMENU:
 396       g_value_set_object (value, gtk_menu_item_get_submenu (menu_item));
 397       break;
 398     case PROP_ACCEL_PATH:
 399       g_value_set_string (value, gtk_menu_item_get_accel_path (menu_item));
 400       break;
 401
 402     default:
 403       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 404       break;
 405     }
 406 }
 407
 408 static void
 409 gtk_menu_item_destroy (GtkObject *object)
 410 {
 411   GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
 412
 413   if (menu_item->submenu)
 414     gtk_widget_destroy (menu_item->submenu);
 415
 416   GTK_OBJECT_CLASS (gtk_menu_item_parent_class)->destroy (object);
 417 }
 418
 419 static void
 420 gtk_menu_item_detacher (GtkWidget *widget,
 421                         GtkMenu   *menu)
 422 {
 423   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
 424
 425   g_return_if_fail (menu_item->submenu == (GtkWidget*) menu);
 426
 427   menu_item->submenu = NULL;
 428 }
 429
 430 /**
 431  * gtk_menu_item_set_submenu:
 432  * @menu_item: a #GtkMenuItem
 433  * @submenu: the submenu, or %NULL
 434  *
 435  * Sets or replaces the menu item's submenu, or removes it when a %NULL
 436  * submenu is passed.
 437  **/
 438 void
 439 gtk_menu_item_set_submenu (GtkMenuItem *menu_item,
 440                            GtkWidget   *submenu)
 441 {
 442   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 443   g_return_if_fail (submenu == NULL || GTK_IS_MENU (submenu));
 444
 445   if (menu_item->submenu != submenu)
 446     {
 447       if (menu_item->submenu)
 448         gtk_menu_detach (GTK_MENU (menu_item->submenu));
 449
 450       if (submenu)
 451         {
 452           menu_item->submenu = submenu;
 453           gtk_menu_attach_to_widget (GTK_MENU (submenu),
 454                                      GTK_WIDGET (menu_item),
 455                                      gtk_menu_item_detacher);
 456         }
 457
 458       if (GTK_WIDGET (menu_item)->parent)
 459         gtk_widget_queue_resize (GTK_WIDGET (menu_item));
 460
 461       g_object_notify (G_OBJECT (menu_item), "submenu");
 462     }
 463 }
 464
 465 /**
 466  * gtk_menu_item_get_submenu:
 467  * @menu_item: a #GtkMenuItem
 468  *
 469  * Gets the submenu underneath this menu item, if any. See
 470  * gtk_menu_item_set_submenu().
 471  *
 472  * Return value: submenu for this menu item, or %NULL if none.
 473  **/
 474 GtkWidget *
 475 gtk_menu_item_get_submenu (GtkMenuItem *menu_item)
 476 {
 477   g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), NULL);
 478
 479   return menu_item->submenu;
 480 }
 481
 482 /**
 483  * gtk_menu_item_remove_submenu:
 484  * @menu_item: a #GtkMenuItem
 485  *
 486  * Removes the widget's submenu.
 487  *
 488  * Deprecated: 2.12: gtk_menu_item_remove_submenu() is deprecated and
 489  *                   should not be used in newly written code. Use
 490  *                   gtk_menu_item_set_submenu() instead.
 491  **/
 492 void
 493 gtk_menu_item_remove_submenu (GtkMenuItem *menu_item)
 494 {
 495   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 496
 497   gtk_menu_item_set_submenu (menu_item, NULL);
 498 }
 499
 500 void _gtk_menu_item_set_placement (GtkMenuItem         *menu_item,
 501                                    GtkSubmenuPlacement  placement);
 502
 503 void
 504 _gtk_menu_item_set_placement (GtkMenuItem         *menu_item,
 505                              GtkSubmenuPlacement  placement)
 506 {
 507   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 508
 509   menu_item->submenu_placement = placement;
 510 }
 511
 512 void
 513 gtk_menu_item_select (GtkMenuItem *menu_item)
 514 {
 515   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 516
 517   gtk_item_select (GTK_ITEM (menu_item));
 518
 519   /* Enable themeing of the parent menu item depending on whether
 520    * something is selected in its submenu
 521    */
 522   if (GTK_IS_MENU (GTK_WIDGET (menu_item)->parent))
 523     {
 524       GtkMenu *menu = GTK_MENU (GTK_WIDGET (menu_item)->parent);
 525
 526       if (menu->parent_menu_item)
 527         gtk_widget_queue_draw (GTK_WIDGET (menu->parent_menu_item));
 528     }
 529 }
 530
 531 void
 532 gtk_menu_item_deselect (GtkMenuItem *menu_item)
 533 {
 534   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 535
 536   gtk_item_deselect (GTK_ITEM (menu_item));
 537
 538   /* Enable themeing of the parent menu item depending on whether
 539    * something is selected in its submenu
 540    */
 541   if (GTK_IS_MENU (GTK_WIDGET (menu_item)->parent))
 542     {
 543       GtkMenu *menu = GTK_MENU (GTK_WIDGET (menu_item)->parent);
 544
 545       if (menu->parent_menu_item)
 546         gtk_widget_queue_draw (GTK_WIDGET (menu->parent_menu_item));
 547     }
 548 }
 549
 550 void
 551 gtk_menu_item_activate (GtkMenuItem *menu_item)
 552 {
 553   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 554
 555   g_signal_emit (menu_item, menu_item_signals[ACTIVATE], 0);
 556 }
 557
 558 void
 559 gtk_menu_item_toggle_size_request (GtkMenuItem *menu_item,
 560                                    gint        *requisition)
 561 {
 562   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 563
 564   g_signal_emit (menu_item, menu_item_signals[TOGGLE_SIZE_REQUEST], 0, requisition);
 565 }
 566
 567 void
 568 gtk_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
 569                                     gint         allocation)
 570 {
 571   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 572
 573   g_signal_emit (menu_item, menu_item_signals[TOGGLE_SIZE_ALLOCATE], 0, allocation);
 574 }
 575
 576 static void
 577 gtk_menu_item_accel_width_foreach (GtkWidget *widget,
 578                                    gpointer data)
 579 {
 580   guint *width = data;
 581
 582   if (GTK_IS_ACCEL_LABEL (widget))
 583     {
 584       guint w;
 585
 586       w = gtk_accel_label_get_accel_width (GTK_ACCEL_LABEL (widget));
 587       *width = MAX (*width, w);
 588     }
 589   else if (GTK_IS_CONTAINER (widget))
 590     gtk_container_foreach (GTK_CONTAINER (widget),
 591                            gtk_menu_item_accel_width_foreach,
 592                            data);
 593 }
 594
 595 static gint
 596 get_minimum_width (GtkWidget *widget)
 597 {
 598   PangoContext *context;
 599   PangoFontMetrics *metrics;
 600   gint height;
 601
 602   context = gtk_widget_get_pango_context (widget);
 603   metrics = pango_context_get_metrics (context,
 604                                        widget->style->font_desc,
 605                                        pango_context_get_language (context));
 606
 607   height = pango_font_metrics_get_ascent (metrics) +
 608       pango_font_metrics_get_descent (metrics);
 609
 610   pango_font_metrics_unref (metrics);
 611
 612   return PANGO_PIXELS (7 * height);
 613 }
 614
 615 static void
 616 gtk_menu_item_size_request (GtkWidget      *widget,
 617                             GtkRequisition *requisition)
 618 {
 619   GtkMenuItem *menu_item;
 620   GtkBin *bin;
 621   guint accel_width;
 622   guint horizontal_padding;
 623   GtkPackDirection pack_dir;
 624   GtkPackDirection child_pack_dir;
 625
 626   g_return_if_fail (GTK_IS_MENU_ITEM (widget));
 627   g_return_if_fail (requisition != NULL);
 628
 629   gtk_widget_style_get (widget,
 630                         "horizontal-padding", &horizontal_padding,
 631                         NULL);
 632
 633   bin = GTK_BIN (widget);
 634   menu_item = GTK_MENU_ITEM (widget);
 635
 636   if (GTK_IS_MENU_BAR (widget->parent))
 637     {
 638       pack_dir = gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (widget->parent));
 639       child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (widget->parent));
 640     }
 641   else
 642     {
 643       pack_dir = GTK_PACK_DIRECTION_LTR;
 644       child_pack_dir = GTK_PACK_DIRECTION_LTR;
 645     }
 646
 647   requisition->width = (GTK_CONTAINER (widget)->border_width +
 648                         widget->style->xthickness) * 2;
 649   requisition->height = (GTK_CONTAINER (widget)->border_width +
 650                          widget->style->ythickness) * 2;
 651
 652   if ((pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL) &&
 653       (child_pack_dir == GTK_PACK_DIRECTION_LTR || child_pack_dir == GTK_PACK_DIRECTION_RTL))
 654     requisition->width += 2 * horizontal_padding;
 655   else if ((pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT) &&
 656       (child_pack_dir == GTK_PACK_DIRECTION_TTB || child_pack_dir == GTK_PACK_DIRECTION_BTT))
 657     requisition->height += 2 * horizontal_padding;
 658
 659   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 660     {
 661       GtkRequisition child_requisition;
 662
 663       gtk_widget_size_request (bin->child, &child_requisition);
 664
 665       requisition->width += child_requisition.width;
 666       requisition->height += child_requisition.height;
 667
 668       if (menu_item->submenu && menu_item->show_submenu_indicator)
 669         {
 670           guint arrow_spacing;
 671
 672           gtk_widget_style_get (widget,
 673                                 "arrow-spacing", &arrow_spacing,
 674                                 NULL);
 675
 676           requisition->width += child_requisition.height;
 677           requisition->width += arrow_spacing;
 678
 679           requisition->width = MAX (requisition->width, get_minimum_width (widget));
 680         }
 681     }
 682   else /* separator item */
 683     {
 684       gboolean wide_separators;
 685       gint     separator_height;
 686
 687       gtk_widget_style_get (widget,
 688                             "wide-separators",  &wide_separators,
 689                             "separator-height", &separator_height,
 690                             NULL);
 691
 692       if (wide_separators)
 693         requisition->height += separator_height + widget->style->ythickness;
 694       else
 695         requisition->height += widget->style->ythickness * 2;
 696     }
 697
 698   accel_width = 0;
 699   gtk_container_foreach (GTK_CONTAINER (menu_item),
 700                          gtk_menu_item_accel_width_foreach,
 701                          &accel_width);
 702   menu_item->accelerator_width = accel_width;
 703 }
 704
 705 static void
 706 gtk_menu_item_size_allocate (GtkWidget     *widget,
 707                              GtkAllocation *allocation)
 708 {
 709   GtkMenuItem *menu_item;
 710   GtkBin *bin;
 711   GtkAllocation child_allocation;
 712   GtkTextDirection direction;
 713   GtkPackDirection pack_dir;
 714   GtkPackDirection child_pack_dir;
 715
 716   g_return_if_fail (GTK_IS_MENU_ITEM (widget));
 717   g_return_if_fail (allocation != NULL);
 718
 719   menu_item = GTK_MENU_ITEM (widget);
 720   bin = GTK_BIN (widget);
 721
 722   direction = gtk_widget_get_direction (widget);
 723
 724   if (GTK_IS_MENU_BAR (widget->parent))
 725     {
 726       pack_dir = gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (widget->parent));
 727       child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (widget->parent));
 728     }
 729   else
 730     {
 731       pack_dir = GTK_PACK_DIRECTION_LTR;
 732       child_pack_dir = GTK_PACK_DIRECTION_LTR;
 733     }
 734
 735   widget->allocation = *allocation;
 736
 737   if (bin->child)
 738     {
 739       GtkRequisition child_requisition;
 740       guint horizontal_padding;
 741
 742       gtk_widget_style_get (widget,
 743                             "horizontal-padding", &horizontal_padding,
 744                             NULL);
 745
 746       child_allocation.x = GTK_CONTAINER (widget)->border_width + widget->style->xthickness;
 747       child_allocation.y = GTK_CONTAINER (widget)->border_width + widget->style->ythickness;
 748
 749       if ((pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL) &&
 750           (child_pack_dir == GTK_PACK_DIRECTION_LTR || child_pack_dir == GTK_PACK_DIRECTION_RTL))
 751         child_allocation.x += horizontal_padding;
 752       else if ((pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT) &&
 753                (child_pack_dir == GTK_PACK_DIRECTION_TTB || child_pack_dir == GTK_PACK_DIRECTION_BTT))
 754         child_allocation.y += horizontal_padding;
 755
 756       child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2);
 757       child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
 758
 759       if (child_pack_dir == GTK_PACK_DIRECTION_LTR ||
 760           child_pack_dir == GTK_PACK_DIRECTION_RTL)
 761         {
 762           if ((direction == GTK_TEXT_DIR_LTR) == (child_pack_dir != GTK_PACK_DIRECTION_RTL))
 763             child_allocation.x += GTK_MENU_ITEM (widget)->toggle_size;
 764           child_allocation.width -= GTK_MENU_ITEM (widget)->toggle_size;
 765         }
 766       else
 767         {
 768           if ((direction == GTK_TEXT_DIR_LTR) == (child_pack_dir != GTK_PACK_DIRECTION_BTT))
 769             child_allocation.y += GTK_MENU_ITEM (widget)->toggle_size;
 770           child_allocation.height -= GTK_MENU_ITEM (widget)->toggle_size;
 771         }
 772
 773       child_allocation.x += widget->allocation.x;
 774       child_allocation.y += widget->allocation.y;
 775
 776       gtk_widget_get_child_requisition (bin->child, &child_requisition);
 777       if (menu_item->submenu && menu_item->show_submenu_indicator)
 778         {
 779           if (direction == GTK_TEXT_DIR_RTL)
 780             child_allocation.x += child_requisition.height;
 781           child_allocation.width -= child_requisition.height;
 782         }
 783
 784       if (child_allocation.width < 1)
 785         child_allocation.width = 1;
 786
 787       gtk_widget_size_allocate (bin->child, &child_allocation);
 788     }
 789
 790   if (GTK_WIDGET_REALIZED (widget))
 791     gdk_window_move_resize (menu_item->event_window,
 792                             allocation->x, allocation->y,
 793                             allocation->width, allocation->height);
 794
 795   if (menu_item->submenu)
 796     gtk_menu_reposition (GTK_MENU (menu_item->submenu));
 797 }
 798
 799 static void
 800 gtk_menu_item_realize (GtkWidget *widget)
 801 {
 802   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
 803   GdkWindowAttr attributes;
 804   gint attributes_mask;
 805
 806   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 807
 808   widget->window = gtk_widget_get_parent_window (widget);
 809   g_object_ref (widget->window);
 810
 811   attributes.x = widget->allocation.x;
 812   attributes.y = widget->allocation.y;
 813   attributes.width = widget->allocation.width;
 814   attributes.height = widget->allocation.height;
 815   attributes.window_type = GDK_WINDOW_CHILD;
 816   attributes.wclass = GDK_INPUT_ONLY;
 817   attributes.event_mask = (gtk_widget_get_events (widget) |
 818                            GDK_BUTTON_PRESS_MASK |
 819                            GDK_BUTTON_RELEASE_MASK |
 820                            GDK_ENTER_NOTIFY_MASK |
 821                            GDK_LEAVE_NOTIFY_MASK |
 822                            GDK_POINTER_MOTION_MASK);
 823
 824   attributes_mask = GDK_WA_X | GDK_WA_Y;
 825   menu_item->event_window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 826   gdk_window_set_user_data (menu_item->event_window, widget);
 827
 828   widget->style = gtk_style_attach (widget->style, widget->window);
 829 }
 830
 831 static void
 832 gtk_menu_item_unrealize (GtkWidget *widget)
 833 {
 834   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
 835
 836   gdk_window_set_user_data (menu_item->event_window, NULL);
 837   gdk_window_destroy (menu_item->event_window);
 838   menu_item->event_window = NULL;
 839
 840   if (GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->unrealize)
 841     (* GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->unrealize) (widget);
 842 }
 843
 844 static void
 845 gtk_menu_item_map (GtkWidget *widget)
 846 {
 847   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
 848
 849   GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->map (widget);
 850
 851   gdk_window_show (menu_item->event_window);
 852 }
 853
 854 static void
 855 gtk_menu_item_unmap (GtkWidget *widget)
 856 {
 857   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
 858
 859   gdk_window_hide (menu_item->event_window);
 860
 861   GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->unmap (widget);
 862 }
 863
 864 static void
 865 gtk_menu_item_paint (GtkWidget    *widget,
 866                      GdkRectangle *area)
 867 {
 868   GtkMenuItem *menu_item;
 869   GtkStateType state_type;
 870   GtkShadowType shadow_type, selected_shadow_type;
 871   gint width, height;
 872   gint x, y;
 873   gint border_width = GTK_CONTAINER (widget)->border_width;
 874
 875   if (GTK_WIDGET_DRAWABLE (widget))
 876     {
 877       menu_item = GTK_MENU_ITEM (widget);
 878
 879       state_type = widget->state;
 880
 881       x = widget->allocation.x + border_width;
 882       y = widget->allocation.y + border_width;
 883       width = widget->allocation.width - border_width * 2;
 884       height = widget->allocation.height - border_width * 2;
 885
 886       if ((state_type == GTK_STATE_PRELIGHT) &&
 887           (GTK_BIN (menu_item)->child))
 888         {
 889           gtk_widget_style_get (widget,
 890                                 "selected-shadow-type", &selected_shadow_type,
 891                                 NULL);
 892           gtk_paint_box (widget->style,
 893                          widget->window,
 894                          GTK_STATE_PRELIGHT,
 895                          selected_shadow_type,
 896                          area, widget, "menuitem",
 897                          x, y, width, height);
 898         }
 899
 900       if (menu_item->submenu && menu_item->show_submenu_indicator)
 901         {
 902           gint arrow_x, arrow_y;
 903           gint arrow_size;
 904           gint arrow_extent;
 905           guint horizontal_padding;
 906           gfloat arrow_scaling;
 907           GtkTextDirection direction;
 908           GtkArrowType arrow_type;
 909           PangoContext *context;
 910           PangoFontMetrics *metrics;
 911
 912           direction = gtk_widget_get_direction (widget);
 913
 914           gtk_widget_style_get (widget,
 915                                 "horizontal-padding", &horizontal_padding,
 916                                 "arrow-scaling", &arrow_scaling,
 917                                 NULL);
 918
 919           context = gtk_widget_get_pango_context (GTK_BIN (menu_item)->child);
 920           metrics = pango_context_get_metrics (context,
 921                                                GTK_WIDGET (GTK_BIN (menu_item)->child)->style->font_desc,
 922                                                pango_context_get_language (context));
 923
 924           arrow_size = (PANGO_PIXELS (pango_font_metrics_get_ascent (metrics) +
 925                                       pango_font_metrics_get_descent (metrics)));
 926
 927           pango_font_metrics_unref (metrics);
 928
 929           arrow_extent = arrow_size * arrow_scaling;
 930
 931           shadow_type = GTK_SHADOW_OUT;
 932           if (state_type == GTK_STATE_PRELIGHT)
 933             shadow_type = GTK_SHADOW_IN;
 934
 935           if (direction == GTK_TEXT_DIR_LTR)
 936             {
 937               arrow_x = x + width - horizontal_padding - arrow_extent;
 938               arrow_type = GTK_ARROW_RIGHT;
 939             }
 940           else
 941             {
 942               arrow_x = x + horizontal_padding;
 943               arrow_type = GTK_ARROW_LEFT;
 944             }
 945
 946           arrow_y = y + (height - arrow_extent) / 2;
 947
 948           gtk_paint_arrow (widget->style, widget->window,
 949                            state_type, shadow_type,
 950                            area, widget, "menuitem",
 951                            arrow_type, TRUE,
 952                            arrow_x, arrow_y,
 953                            arrow_extent, arrow_extent);
 954         }
 955       else if (!GTK_BIN (menu_item)->child)
 956         {
 957           gboolean wide_separators;
 958           gint     separator_height;
 959           guint    horizontal_padding;
 960
 961           gtk_widget_style_get (widget,
 962                                 "wide-separators",    &wide_separators,
 963                                 "separator-height",   &separator_height,
 964                                 "horizontal-padding", &horizontal_padding,
 965                                 NULL);
 966
 967           if (wide_separators)
 968             gtk_paint_box (widget->style, widget->window,
 969                            GTK_STATE_NORMAL, GTK_SHADOW_ETCHED_OUT,
 970                            area, widget, "hseparator",
 971                            widget->allocation.x + horizontal_padding + widget->style->xthickness,
 972                            widget->allocation.y + (widget->allocation.height -
 973                                                    separator_height -
 974                                                    widget->style->ythickness) / 2,
 975                            widget->allocation.width -
 976                            2 * (horizontal_padding + widget->style->xthickness),
 977                            separator_height);
 978           else
 979             gtk_paint_hline (widget->style, widget->window,
 980                              GTK_STATE_NORMAL, area, widget, "menuitem",
 981                              widget->allocation.x + horizontal_padding + widget->style->xthickness,
 982                              widget->allocation.x + widget->allocation.width - horizontal_padding - widget->style->xthickness - 1,
 983                              widget->allocation.y + (widget->allocation.height -
 984                                                      widget->style->ythickness) / 2);
 985         }
 986     }
 987 }
 988
 989 static gint
 990 gtk_menu_item_expose (GtkWidget      *widget,
 991                       GdkEventExpose *event)
 992 {
 993   g_return_val_if_fail (GTK_IS_MENU_ITEM (widget), FALSE);
 994   g_return_val_if_fail (event != NULL, FALSE);
 995
 996   if (GTK_WIDGET_DRAWABLE (widget))
 997     {
 998       gtk_menu_item_paint (widget, &event->area);
 999
1000       (* GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->expose_event) (widget, event);
1001     }
1002
1003   return FALSE;
1004 }
1005
1006 static void
1007 gtk_real_menu_item_select (GtkItem *item)
1008 {
1009   GtkMenuItem *menu_item;
1010   gboolean touchscreen_mode;
1011
1012   g_return_if_fail (GTK_IS_MENU_ITEM (item));
1013
1014   menu_item = GTK_MENU_ITEM (item);
1015
1016   g_object_get (gtk_widget_get_settings (GTK_WIDGET (item)),
1017                 "gtk-touchscreen-mode", &touchscreen_mode,
1018                 NULL);
1019
1020   if (!touchscreen_mode &&
1021       menu_item->submenu &&
1022       (!GTK_WIDGET_MAPPED (menu_item->submenu) ||
1023        GTK_MENU (menu_item->submenu)->tearoff_active))
1024     {
1025       _gtk_menu_item_popup_submenu (GTK_WIDGET (menu_item), TRUE);
1026     }
1027
1028   gtk_widget_set_state (GTK_WIDGET (menu_item), GTK_STATE_PRELIGHT);
1029   gtk_widget_queue_draw (GTK_WIDGET (menu_item));
1030 }
1031
1032 static void
1033 gtk_real_menu_item_deselect (GtkItem *item)
1034 {
1035   GtkMenuItem *menu_item;
1036
1037   g_return_if_fail (GTK_IS_MENU_ITEM (item));
1038
1039   menu_item = GTK_MENU_ITEM (item);
1040
1041   if (menu_item->submenu)
1042     _gtk_menu_item_popdown_submenu (GTK_WIDGET (menu_item));
1043
1044   gtk_widget_set_state (GTK_WIDGET (menu_item), GTK_STATE_NORMAL);
1045   gtk_widget_queue_draw (GTK_WIDGET (menu_item));
1046 }
1047
1048 static gboolean
1049 gtk_menu_item_mnemonic_activate (GtkWidget *widget,
1050                                  gboolean   group_cycling)
1051 {
1052   if (group_cycling &&
1053       widget->parent &&
1054       GTK_IS_MENU_SHELL (widget->parent) &&
1055       GTK_MENU_SHELL (widget->parent)->active)
1056     {
1057       gtk_menu_shell_select_item (GTK_MENU_SHELL (widget->parent),
1058                                   widget);
1059     }
1060   else
1061     g_signal_emit (widget, menu_item_signals[ACTIVATE_ITEM], 0);
1062
1063   return TRUE;
1064 }
1065
1066 static void
1067 gtk_real_menu_item_activate_item (GtkMenuItem *menu_item)
1068 {
1069   GtkWidget *widget;
1070
1071   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1072
1073   widget = GTK_WIDGET (menu_item);
1074
1075   if (widget->parent &&
1076       GTK_IS_MENU_SHELL (widget->parent))
1077     {
1078       if (menu_item->submenu == NULL)
1079         gtk_menu_shell_activate_item (GTK_MENU_SHELL (widget->parent),
1080                                       widget, TRUE);
1081       else
1082         {
1083           GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget->parent);
1084
1085           _gtk_menu_shell_activate (menu_shell);
1086
1087           gtk_menu_shell_select_item (GTK_MENU_SHELL (widget->parent), widget);
1088           _gtk_menu_item_popup_submenu (widget, FALSE);
1089
1090           gtk_menu_shell_select_first (GTK_MENU_SHELL (menu_item->submenu), TRUE);
1091         }
1092     }
1093 }
1094
1095 static void
1096 gtk_real_menu_item_toggle_size_request (GtkMenuItem *menu_item,
1097                                         gint        *requisition)
1098 {
1099   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1100
1101   *requisition = 0;
1102 }
1103
1104 static void
1105 gtk_real_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
1106                                          gint         allocation)
1107 {
1108   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1109
1110   menu_item->toggle_size = allocation;
1111 }
1112
1113 static void
1114 free_timeval (GTimeVal *val)
1115 {
1116   g_slice_free (GTimeVal, val);
1117 }
1118
1119 static void
1120 gtk_menu_item_real_popup_submenu (GtkWidget *widget,
1121                                   gboolean   remember_exact_time)
1122 {
1123   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
1124
1125   if (GTK_WIDGET_IS_SENSITIVE (menu_item->submenu))
1126     {
1127       gboolean take_focus;
1128
1129       take_focus = gtk_menu_shell_get_take_focus (GTK_MENU_SHELL (widget->parent));
1130       gtk_menu_shell_set_take_focus (GTK_MENU_SHELL (menu_item->submenu),
1131                                      take_focus);
1132
1133       if (remember_exact_time)
1134         {
1135           GTimeVal *popup_time = g_slice_new0 (GTimeVal);
1136
1137           g_get_current_time (popup_time);
1138
1139           g_object_set_data_full (G_OBJECT (menu_item->submenu),
1140                                   "gtk-menu-exact-popup-time", popup_time,
1141                                   (GDestroyNotify) free_timeval);
1142         }
1143       else
1144         {
1145           g_object_set_data (G_OBJECT (menu_item->submenu),
1146                              "gtk-menu-exact-popup-time", NULL);
1147         }
1148
1149       gtk_menu_popup (GTK_MENU (menu_item->submenu),
1150                       widget->parent,
1151                       widget,
1152                       gtk_menu_item_position_menu,
1153                       menu_item,
1154                       GTK_MENU_SHELL (widget->parent)->button,
1155                       0);
1156     }
1157
1158   /* Enable themeing of the parent menu item depending on whether
1159    * its submenu is shown or not.
1160    */
1161   gtk_widget_queue_draw (widget);
1162 }
1163
1164 static gint
1165 gtk_menu_item_popup_timeout (gpointer data)
1166 {
1167   GtkMenuItem *menu_item;
1168   GtkWidget *parent;
1169
1170   menu_item = GTK_MENU_ITEM (data);
1171
1172   parent = GTK_WIDGET (menu_item)->parent;
1173
1174   if ((GTK_IS_MENU_SHELL (parent) && GTK_MENU_SHELL (parent)->active) ||
1175       (GTK_IS_MENU (parent) && GTK_MENU (parent)->torn_off))
1176     {
1177       gtk_menu_item_real_popup_submenu (GTK_WIDGET (menu_item), TRUE);
1178       if (menu_item->timer_from_keypress && menu_item->submenu)
1179         GTK_MENU_SHELL (menu_item->submenu)->ignore_enter = TRUE;
1180     }
1181
1182   menu_item->timer = 0;
1183
1184   return FALSE;
1185 }
1186
1187 static gint
1188 get_popup_delay (GtkWidget *widget)
1189 {
1190   if (GTK_IS_MENU_SHELL (widget->parent))
1191     {
1192       return _gtk_menu_shell_get_popup_delay (GTK_MENU_SHELL (widget->parent));
1193     }
1194   else
1195     {
1196       gint popup_delay;
1197
1198       g_object_get (gtk_widget_get_settings (widget),
1199                     "gtk-menu-popup-delay", &popup_delay,
1200                     NULL);
1201
1202       return popup_delay;
1203     }
1204 }
1205
1206 void
1207 _gtk_menu_item_popup_submenu (GtkWidget *widget,
1208                               gboolean   with_delay)
1209 {
1210   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
1211
1212   if (menu_item->timer)
1213     {
1214       g_source_remove (menu_item->timer);
1215       menu_item->timer = 0;
1216       with_delay = FALSE;
1217     }
1218
1219   if (with_delay)
1220     {
1221       gint popup_delay = get_popup_delay (widget);
1222
1223       if (popup_delay > 0)
1224         {
1225           GdkEvent *event = gtk_get_current_event ();
1226
1227           menu_item->timer = gdk_threads_add_timeout (popup_delay,
1228                                                       gtk_menu_item_popup_timeout,
1229                                                       menu_item);
1230
1231           if (event &&
1232               event->type != GDK_BUTTON_PRESS &&
1233               event->type != GDK_ENTER_NOTIFY)
1234             menu_item->timer_from_keypress = TRUE;
1235           else
1236             menu_item->timer_from_keypress = FALSE;
1237
1238           if (event)
1239             gdk_event_free (event);
1240
1241           return;
1242         }
1243     }
1244
1245   gtk_menu_item_real_popup_submenu (widget, FALSE);
1246 }
1247
1248 void
1249 _gtk_menu_item_popdown_submenu (GtkWidget *widget)
1250 {
1251   GtkMenuItem *menu_item;
1252
1253   menu_item = GTK_MENU_ITEM (widget);
1254
1255   if (menu_item->submenu)
1256     {
1257       g_object_set_data (G_OBJECT (menu_item->submenu),
1258                          "gtk-menu-exact-popup-time", NULL);
1259
1260       if (menu_item->timer)
1261         {
1262           g_source_remove (menu_item->timer);
1263           menu_item->timer = 0;
1264         }
1265       else
1266         gtk_menu_popdown (GTK_MENU (menu_item->submenu));
1267
1268       gtk_widget_queue_draw (widget);
1269     }
1270 }
1271
1272 static void
1273 get_offsets (GtkMenu *menu,
1274              gint    *horizontal_offset,
1275              gint    *vertical_offset)
1276 {
1277   gint vertical_padding;
1278   gint horizontal_padding;
1279
1280   gtk_widget_style_get (GTK_WIDGET (menu),
1281                         "horizontal-offset", horizontal_offset,
1282                         "vertical-offset", vertical_offset,
1283                         "horizontal-padding", &horizontal_padding,
1284                         "vertical-padding", &vertical_padding,
1285                         NULL);
1286
1287   *vertical_offset -= GTK_WIDGET (menu)->style->ythickness;
1288   *vertical_offset -= vertical_padding;
1289   *horizontal_offset += horizontal_padding;
1290 }
1291
1292 static void
1293 gtk_menu_item_position_menu (GtkMenu  *menu,
1294                              gint     *x,
1295                              gint     *y,
1296                              gboolean *push_in,
1297                              gpointer  user_data)
1298 {
1299   GtkMenuItem *menu_item;
1300   GtkWidget *widget;
1301   GtkMenuItem *parent_menu_item;
1302   GdkScreen *screen;
1303   gint twidth, theight;
1304   gint tx, ty;
1305   GtkTextDirection direction;
1306   GdkRectangle monitor;
1307   gint monitor_num;
1308   gint horizontal_offset;
1309   gint vertical_offset;
1310   gint parent_xthickness;
1311   gint available_left, available_right;
1312
1313   g_return_if_fail (menu != NULL);
1314   g_return_if_fail (x != NULL);
1315   g_return_if_fail (y != NULL);
1316
1317   menu_item = GTK_MENU_ITEM (user_data);
1318   widget = GTK_WIDGET (user_data);
1319
1320   if (push_in)
1321     *push_in = FALSE;
1322
1323   direction = gtk_widget_get_direction (widget);
1324
1325   twidth = GTK_WIDGET (menu)->requisition.width;
1326   theight = GTK_WIDGET (menu)->requisition.height;
1327
1328   screen = gtk_widget_get_screen (GTK_WIDGET (menu));
1329   monitor_num = gdk_screen_get_monitor_at_window (screen, menu_item->event_window);
1330   if (monitor_num < 0)
1331     monitor_num = 0;
1332   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
1333
1334   if (!gdk_window_get_origin (widget->window, &tx, &ty))
1335     {
1336       g_warning ("Menu not on screen");
1337       return;
1338     }
1339
1340   tx += widget->allocation.x;
1341   ty += widget->allocation.y;
1342
1343   get_offsets (menu, &horizontal_offset, &vertical_offset);
1344
1345   available_left = tx - monitor.x;
1346   available_right = monitor.x + monitor.width - (tx + widget->allocation.width);
1347
1348   if (GTK_IS_MENU_BAR (widget->parent))
1349     {
1350       menu_item->from_menubar = TRUE;
1351     }
1352   else if (GTK_IS_MENU (widget->parent))
1353     {
1354       if (GTK_MENU (widget->parent)->parent_menu_item)
1355         menu_item->from_menubar = GTK_MENU_ITEM (GTK_MENU (widget->parent)->parent_menu_item)->from_menubar;
1356       else
1357         menu_item->from_menubar = FALSE;
1358     }
1359   else
1360     {
1361       menu_item->from_menubar = FALSE;
1362     }
1363
1364   switch (menu_item->submenu_placement)
1365     {
1366     case GTK_TOP_BOTTOM:
1367       if (direction == GTK_TEXT_DIR_LTR)
1368         menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
1369       else
1370         {
1371           menu_item->submenu_direction = GTK_DIRECTION_LEFT;
1372           tx += widget->allocation.width - twidth;
1373         }
1374       if ((ty + widget->allocation.height + theight) <= monitor.y + monitor.height)
1375         ty += widget->allocation.height;
1376       else if ((ty - theight) >= monitor.y)
1377         ty -= theight;
1378       else if (monitor.y + monitor.height - (ty + widget->allocation.height) > ty)
1379         ty += widget->allocation.height;
1380       else
1381         ty -= theight;
1382       break;
1383
1384     case GTK_LEFT_RIGHT:
1385       if (GTK_IS_MENU (widget->parent))
1386         parent_menu_item = GTK_MENU_ITEM (GTK_MENU (widget->parent)->parent_menu_item);
1387       else
1388         parent_menu_item = NULL;
1389
1390       parent_xthickness = widget->parent->style->xthickness;
1391
1392       if (parent_menu_item && !GTK_MENU (widget->parent)->torn_off)
1393         {
1394           menu_item->submenu_direction = parent_menu_item->submenu_direction;
1395         }
1396       else
1397         {
1398           if (direction == GTK_TEXT_DIR_LTR)
1399             menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
1400           else
1401             menu_item->submenu_direction = GTK_DIRECTION_LEFT;
1402         }
1403
1404       switch (menu_item->submenu_direction)
1405         {
1406         case GTK_DIRECTION_LEFT:
1407           if (tx - twidth - parent_xthickness - horizontal_offset >= monitor.x ||
1408               available_left >= available_right)
1409             tx -= twidth + parent_xthickness + horizontal_offset;
1410           else
1411             {
1412               menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
1413               tx += widget->allocation.width + parent_xthickness + horizontal_offset;
1414             }
1415           break;
1416
1417         case GTK_DIRECTION_RIGHT:
1418           if (tx + widget->allocation.width + parent_xthickness + horizontal_offset + twidth <= monitor.x + monitor.width ||
1419               available_right >= available_left)
1420             tx += widget->allocation.width + parent_xthickness + horizontal_offset;
1421           else
1422             {
1423               menu_item->submenu_direction = GTK_DIRECTION_LEFT;
1424               tx -= twidth + parent_xthickness + horizontal_offset;
1425             }
1426           break;
1427         }
1428
1429       ty += vertical_offset;
1430
1431       /* If the height of the menu doesn't fit we move it upward. */
1432       ty = CLAMP (ty, monitor.y, MAX (monitor.y, monitor.y + monitor.height - theight));
1433       break;
1434     }
1435
1436   /* If we have negative, tx, here it is because we can't get
1437    * the menu all the way on screen. Favor the left portion.
1438    */
1439   *x = CLAMP (tx, monitor.x, MAX (monitor.x, monitor.x + monitor.width - twidth));
1440   *y = ty;
1441
1442   gtk_menu_set_monitor (menu, monitor_num);
1443
1444   if (!GTK_WIDGET_VISIBLE (menu->toplevel))
1445     {
1446       gtk_window_set_type_hint (GTK_WINDOW (menu->toplevel), menu_item->from_menubar?
1447                                 GDK_WINDOW_TYPE_HINT_DROPDOWN_MENU : GDK_WINDOW_TYPE_HINT_POPUP_MENU);
1448     }
1449 }
1450
1451 /**
1452  * gtk_menu_item_set_right_justified:
1453  * @menu_item: a #GtkMenuItem.
1454  * @right_justified: if %TRUE the menu item will appear at the
1455  *   far right if added to a menu bar.
1456  *
1457  * Sets whether the menu item appears justified at the right
1458  * side of a menu bar. This was traditionally done for "Help" menu
1459  * items, but is now considered a bad idea. (If the widget
1460  * layout is reversed for a right-to-left language like Hebrew
1461  * or Arabic, right-justified-menu-items appear at the left.)
1462  **/
1463 void
1464 gtk_menu_item_set_right_justified (GtkMenuItem *menu_item,
1465                                    gboolean     right_justified)
1466 {
1467   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1468
1469   right_justified = right_justified != FALSE;
1470
1471   if (right_justified != menu_item->right_justify)
1472     {
1473       menu_item->right_justify = right_justified;
1474       gtk_widget_queue_resize (GTK_WIDGET (menu_item));
1475     }
1476 }
1477
1478 /**
1479  * gtk_menu_item_get_right_justified:
1480  * @menu_item: a #GtkMenuItem
1481  *
1482  * Gets whether the menu item appears justified at the right
1483  * side of the menu bar.
1484  *
1485  * Return value: %TRUE if the menu item will appear at the
1486  *   far right if added to a menu bar.
1487  **/
1488 gboolean
1489 gtk_menu_item_get_right_justified (GtkMenuItem *menu_item)
1490 {
1491   g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), FALSE);
1492
1493   return menu_item->right_justify;
1494 }
1495
1496
1497 static void
1498 gtk_menu_item_show_all (GtkWidget *widget)
1499 {
1500   GtkMenuItem *menu_item;
1501
1502   g_return_if_fail (GTK_IS_MENU_ITEM (widget));
1503
1504   menu_item = GTK_MENU_ITEM (widget);
1505
1506   /* show children including submenu */
1507   if (menu_item->submenu)
1508     gtk_widget_show_all (menu_item->submenu);
1509   gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL);
1510
1511   gtk_widget_show (widget);
1512 }
1513
1514 static void
1515 gtk_menu_item_hide_all (GtkWidget *widget)
1516 {
1517   GtkMenuItem *menu_item;
1518
1519   g_return_if_fail (GTK_IS_MENU_ITEM (widget));
1520
1521   gtk_widget_hide (widget);
1522
1523   menu_item = GTK_MENU_ITEM (widget);
1524
1525   /* hide children including submenu */
1526   gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_hide_all, NULL);
1527   if (menu_item->submenu)
1528     gtk_widget_hide_all (menu_item->submenu);
1529 }
1530
1531 static gboolean
1532 gtk_menu_item_can_activate_accel (GtkWidget *widget,
1533                                   guint      signal_id)
1534 {
1535   /* Chain to the parent GtkMenu for further checks */
1536   return (GTK_WIDGET_IS_SENSITIVE (widget) && GTK_WIDGET_VISIBLE (widget) &&
1537           widget->parent && gtk_widget_can_activate_accel (widget->parent, signal_id));
1538 }
1539
1540 static void
1541 gtk_menu_item_accel_name_foreach (GtkWidget *widget,
1542                                   gpointer data)
1543 {
1544   const gchar **path_p = data;
1545
1546   if (!*path_p)
1547     {
1548       if (GTK_IS_LABEL (widget))
1549         {
1550           *path_p = gtk_label_get_text (GTK_LABEL (widget));
1551           if (*path_p && (*path_p)[0] == 0)
1552             *path_p = NULL;
1553         }
1554       else if (GTK_IS_CONTAINER (widget))
1555         gtk_container_foreach (GTK_CONTAINER (widget),
1556                                gtk_menu_item_accel_name_foreach,
1557                                data);
1558     }
1559 }
1560
1561 static void
1562 gtk_menu_item_parent_set (GtkWidget *widget,
1563                           GtkWidget *previous_parent)
1564 {
1565   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
1566   GtkMenu *menu = GTK_IS_MENU (widget->parent) ? GTK_MENU (widget->parent) : NULL;
1567
1568   if (menu)
1569     _gtk_menu_item_refresh_accel_path (menu_item,
1570                                        menu->accel_path,
1571                                        menu->accel_group,
1572                                        TRUE);
1573
1574   if (GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->parent_set)
1575     GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->parent_set (widget, previous_parent);
1576 }
1577
1578 void
1579 _gtk_menu_item_refresh_accel_path (GtkMenuItem   *menu_item,
1580                                    const gchar   *prefix,
1581                                    GtkAccelGroup *accel_group,
1582                                    gboolean       group_changed)
1583 {
1584   const gchar *path;
1585   GtkWidget *widget;
1586
1587   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1588   g_return_if_fail (!accel_group || GTK_IS_ACCEL_GROUP (accel_group));
1589
1590   widget = GTK_WIDGET (menu_item);
1591
1592   if (!accel_group)
1593     {
1594       gtk_widget_set_accel_path (widget, NULL, NULL);
1595       return;
1596     }
1597
1598   path = _gtk_widget_get_accel_path (widget, NULL);
1599   if (!path)                                    /* no active accel_path yet */
1600     {
1601       path = menu_item->accel_path;
1602       if (!path && prefix)
1603         {
1604           const gchar *postfix = NULL;
1605           gchar *new_path;
1606
1607           /* try to construct one from label text */
1608           gtk_container_foreach (GTK_CONTAINER (menu_item),
1609                                  gtk_menu_item_accel_name_foreach,
1610                                  &postfix);
1611           if (postfix)
1612             {
1613               new_path = g_strconcat (prefix, "/", postfix, NULL);
1614               path = menu_item->accel_path = (char*)g_intern_string (new_path);
1615               g_free (new_path);
1616             }
1617         }
1618       if (path)
1619         gtk_widget_set_accel_path (widget, path, accel_group);
1620     }
1621   else if (group_changed)                       /* reinstall accelerators */
1622     gtk_widget_set_accel_path (widget, path, accel_group);
1623 }
1624
1625 /**
1626  * gtk_menu_item_set_accel_path
1627  * @menu_item:  a valid #GtkMenuItem
1628  * @accel_path: accelerator path, corresponding to this menu item's
1629  *              functionality, or %NULL to unset the current path.
1630  *
1631  * Set the accelerator path on @menu_item, through which runtime changes of the
1632  * menu item's accelerator caused by the user can be identified and saved to
1633  * persistant storage (see gtk_accel_map_save() on this).
1634  * To setup a default accelerator for this menu item, call
1635  * gtk_accel_map_add_entry() with the same @accel_path.
1636  * See also gtk_accel_map_add_entry() on the specifics of accelerator paths,
1637  * and gtk_menu_set_accel_path() for a more convenient variant of this function.
1638  *
1639  * This function is basically a convenience wrapper that handles calling
1640  * gtk_widget_set_accel_path() with the appropriate accelerator group for
1641  * the menu item.
1642  *
1643  * Note that you do need to set an accelerator on the parent menu with
1644  * gtk_menu_set_accel_group() for this to work.
1645  *
1646  * Note that @accel_path string will be stored in a #GQuark. Therefore, if you
1647  * pass a static string, you can save some memory by interning it first with
1648  * g_intern_static_string().
1649  */
1650 void
1651 gtk_menu_item_set_accel_path (GtkMenuItem *menu_item,
1652                               const gchar *accel_path)
1653 {
1654   GtkWidget *widget;
1655
1656   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1657   g_return_if_fail (accel_path == NULL ||
1658                     (accel_path[0] == '<' && strchr (accel_path, '/')));
1659
1660   widget = GTK_WIDGET (menu_item);
1661
1662   /* store new path */
1663   menu_item->accel_path = (char*)g_intern_string (accel_path);
1664
1665   /* forget accelerators associated with old path */
1666   gtk_widget_set_accel_path (widget, NULL, NULL);
1667
1668   /* install accelerators associated with new path */
1669   if (GTK_IS_MENU (widget->parent))
1670     {
1671       GtkMenu *menu = GTK_MENU (widget->parent);
1672
1673       if (menu->accel_group)
1674         _gtk_menu_item_refresh_accel_path (GTK_MENU_ITEM (widget),
1675                                            NULL,
1676                                            menu->accel_group,
1677                                            FALSE);
1678     }
1679 }
1680
1681 /**
1682  * gtk_menu_item_get_accel_path
1683  * @menu_item:  a valid #GtkMenuItem
1684  *
1685  * Retrieve the accelerator path that was previously set on @menu_item.
1686  *
1687  * See gtk_menu_item_set_accel_path() for details.
1688  *
1689  * Returns: the accelerator path corresponding to this menu item's
1690  *              functionality, or %NULL if not set
1691  *
1692  * Since: 2.14
1693  */
1694 G_CONST_RETURN gchar *
1695 gtk_menu_item_get_accel_path (GtkMenuItem *menu_item)
1696 {
1697   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1698
1699   return menu_item->accel_path;
1700 }
1701
1702 static void
1703 gtk_menu_item_forall (GtkContainer *container,
1704                       gboolean      include_internals,
1705                       GtkCallback   callback,
1706                       gpointer      callback_data)
1707 {
1708   GtkBin *bin;
1709
1710   g_return_if_fail (GTK_IS_MENU_ITEM (container));
1711   g_return_if_fail (callback != NULL);
1712
1713   bin = GTK_BIN (container);
1714
1715   if (bin->child)
1716     callback (bin->child, callback_data);
1717 }
1718
1719 gboolean
1720 _gtk_menu_item_is_selectable (GtkWidget *menu_item)
1721 {
1722   if ((!GTK_BIN (menu_item)->child &&
1723        G_OBJECT_TYPE (menu_item) == GTK_TYPE_MENU_ITEM) ||
1724       GTK_IS_SEPARATOR_MENU_ITEM (menu_item) ||
1725       !GTK_WIDGET_IS_SENSITIVE (menu_item) ||
1726       !GTK_WIDGET_VISIBLE (menu_item))
1727     return FALSE;
1728
1729   return TRUE;
1730 }
1731
1732 #define __GTK_MENU_ITEM_C__
1733 #include "gtkaliasdef.c"