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_SUBMENU
  56 };
  57
  58
  59 static void gtk_menu_item_set_property   (GObject          *object,
  60                                           guint             prop_id,
  61                                           const GValue     *value,
  62                                           GParamSpec       *pspec);
  63 static void gtk_menu_item_get_property   (GObject          *object,
  64                                           guint             prop_id,
  65                                           GValue           *value,
  66                                           GParamSpec       *pspec);
  67 static void gtk_menu_item_finalize       (GObject          *object);
  68 static void gtk_menu_item_destroy        (GtkObject        *object);
  69 static void gtk_menu_item_size_request   (GtkWidget        *widget,
  70                                           GtkRequisition   *requisition);
  71 static void gtk_menu_item_size_allocate  (GtkWidget        *widget,
  72                                           GtkAllocation    *allocation);
  73 static void gtk_menu_item_realize        (GtkWidget        *widget);
  74 static void gtk_menu_item_unrealize      (GtkWidget        *widget);
  75 static void gtk_menu_item_map            (GtkWidget        *widget);
  76 static void gtk_menu_item_unmap          (GtkWidget        *widget);
  77 static void gtk_menu_item_paint          (GtkWidget        *widget,
  78                                           GdkRectangle     *area);
  79 static gint gtk_menu_item_expose         (GtkWidget        *widget,
  80                                           GdkEventExpose   *event);
  81 static void gtk_menu_item_parent_set     (GtkWidget        *widget,
  82                                           GtkWidget        *previous_parent);
  83
  84
  85 static void gtk_real_menu_item_select               (GtkItem     *item);
  86 static void gtk_real_menu_item_deselect             (GtkItem     *item);
  87 static void gtk_real_menu_item_activate_item        (GtkMenuItem *item);
  88 static void gtk_real_menu_item_toggle_size_request  (GtkMenuItem *menu_item,
  89                                                      gint        *requisition);
  90 static void gtk_real_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
  91                                                      gint         allocation);
  92 static gboolean gtk_menu_item_mnemonic_activate     (GtkWidget   *widget,
  93                                                      gboolean     group_cycling);
  94
  95 static gint gtk_menu_item_popup_timeout  (gpointer          data);
  96 static void gtk_menu_item_position_menu  (GtkMenu          *menu,
  97                                           gint             *x,
  98                                           gint             *y,
  99                                           gboolean         *push_in,
 100                                           gpointer          user_data);
 101 static void gtk_menu_item_show_all       (GtkWidget        *widget);
 102 static void gtk_menu_item_hide_all       (GtkWidget        *widget);
 103 static void gtk_menu_item_forall         (GtkContainer    *container,
 104                                           gboolean         include_internals,
 105                                           GtkCallback      callback,
 106                                           gpointer         callback_data);
 107 static gboolean gtk_menu_item_can_activate_accel (GtkWidget *widget,
 108                                                   guint      signal_id);
 109
 110
 111 static guint menu_item_signals[LAST_SIGNAL] = { 0 };
 112
 113 G_DEFINE_TYPE (GtkMenuItem, gtk_menu_item, GTK_TYPE_ITEM)
 114
 115 static void
 116 gtk_menu_item_class_init (GtkMenuItemClass *klass)
 117 {
 118   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 119   GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);
 120   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 121   GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
 122   GtkItemClass *item_class = GTK_ITEM_CLASS (klass);
 123
 124   gobject_class->set_property = gtk_menu_item_set_property;
 125   gobject_class->get_property = gtk_menu_item_get_property;
 126   gobject_class->finalize = gtk_menu_item_finalize;
 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:submenu:
 196    *
 197    * The submenu attached to the menu item, or NULL if it has none.
 198    *
 199    * Since: 2.12
 200    **/
 201   g_object_class_install_property (gobject_class,
 202                                    PROP_SUBMENU,
 203                                    g_param_spec_object ("submenu",
 204                                                         P_("Submenu"),
 205                                                         P_("The submenu attached to the menu item, or NULL if it has none"),
 206                                                         GTK_TYPE_MENU,
 207                                                         GTK_PARAM_READWRITE));
 208
 209   gtk_widget_class_install_style_property_parser (widget_class,
 210                                                   g_param_spec_enum ("selected-shadow-type",
 211                                                                      "Selected Shadow Type",
 212                                                                      "Shadow type when item is selected",
 213                                                                      GTK_TYPE_SHADOW_TYPE,
 214                                                                      GTK_SHADOW_NONE,
 215                                                                      GTK_PARAM_READABLE),
 216                                                   gtk_rc_property_parse_enum);
 217
 218   gtk_widget_class_install_style_property (widget_class,
 219                                            g_param_spec_int ("horizontal-padding",
 220                                                              "Horizontal Padding",
 221                                                              "Padding to left and right of the menu item",
 222                                                              0,
 223                                                              G_MAXINT,
 224                                                              3,
 225                                                              GTK_PARAM_READABLE));
 226
 227   gtk_widget_class_install_style_property (widget_class,
 228                                            g_param_spec_int ("toggle-spacing",
 229                                                              "Icon Spacing",
 230                                                              "Space between icon and label",
 231                                                              0,
 232                                                              G_MAXINT,
 233                                                              5,
 234                                                              GTK_PARAM_READABLE));
 235
 236   gtk_widget_class_install_style_property (widget_class,
 237                                            g_param_spec_int ("arrow-spacing",
 238                                                              "Arrow Spacing",
 239                                                              "Space between label and arrow",
 240                                                              0,
 241                                                              G_MAXINT,
 242                                                              10,
 243                                                              GTK_PARAM_READABLE));
 244
 245   gtk_widget_class_install_style_property (widget_class,
 246                                            g_param_spec_float ("arrow-scaling",
 247                                                                P_("Arrow Scaling"),
 248                                                                P_("Amount of space used up by arrow, relative to the menu item's font size"),
 249                                                                0.0, 2.0, 0.8,
 250                                                                GTK_PARAM_READABLE));
 251 }
 252
 253 static void
 254 gtk_menu_item_init (GtkMenuItem *menu_item)
 255 {
 256   GTK_WIDGET_SET_FLAGS (menu_item, GTK_NO_WINDOW);
 257
 258   menu_item->submenu = NULL;
 259   menu_item->toggle_size = 0;
 260   menu_item->accelerator_width = 0;
 261   menu_item->show_submenu_indicator = FALSE;
 262   if (gtk_widget_get_direction (GTK_WIDGET (menu_item)) == GTK_TEXT_DIR_RTL)
 263     menu_item->submenu_direction = GTK_DIRECTION_LEFT;
 264   else
 265     menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
 266   menu_item->submenu_placement = GTK_TOP_BOTTOM;
 267   menu_item->right_justify = FALSE;
 268
 269   menu_item->timer = 0;
 270 }
 271
 272 GtkWidget*
 273 gtk_menu_item_new (void)
 274 {
 275   return g_object_new (GTK_TYPE_MENU_ITEM, NULL);
 276 }
 277
 278 GtkWidget*
 279 gtk_menu_item_new_with_label (const gchar *label)
 280 {
 281   GtkWidget *menu_item;
 282   GtkWidget *accel_label;
 283
 284   menu_item = gtk_menu_item_new ();
 285   accel_label = gtk_accel_label_new (label);
 286   gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);
 287
 288   gtk_container_add (GTK_CONTAINER (menu_item), accel_label);
 289   gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label), menu_item);
 290   gtk_widget_show (accel_label);
 291
 292   return menu_item;
 293 }
 294
 295
 296 /**
 297  * gtk_menu_item_new_with_mnemonic:
 298  * @label: The text of the button, with an underscore in front of the
 299  *         mnemonic character
 300  * @returns: a new #GtkMenuItem
 301  *
 302  * Creates a new #GtkMenuItem containing a label. The label
 303  * will be created using gtk_label_new_with_mnemonic(), so underscores
 304  * in @label indicate the mnemonic for the menu item.
 305  **/
 306 GtkWidget*
 307 gtk_menu_item_new_with_mnemonic (const gchar *label)
 308 {
 309   GtkWidget *menu_item;
 310   GtkWidget *accel_label;
 311
 312   menu_item = gtk_menu_item_new ();
 313   accel_label = g_object_new (GTK_TYPE_ACCEL_LABEL, NULL);
 314   gtk_label_set_text_with_mnemonic (GTK_LABEL (accel_label), label);
 315   gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);
 316
 317   gtk_container_add (GTK_CONTAINER (menu_item), accel_label);
 318   gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label), menu_item);
 319   gtk_widget_show (accel_label);
 320
 321   return menu_item;
 322 }
 323
 324 static void
 325 gtk_menu_item_set_property (GObject      *object,
 326                             guint         prop_id,
 327                             const GValue *value,
 328                             GParamSpec   *pspec)
 329 {
 330   GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
 331
 332   switch (prop_id)
 333     {
 334     case PROP_SUBMENU:
 335       gtk_menu_item_set_submenu (menu_item, g_value_get_object (value));
 336       break;
 337
 338     default:
 339       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 340       break;
 341     }
 342 }
 343
 344 static void
 345 gtk_menu_item_get_property (GObject    *object,
 346                             guint       prop_id,
 347                             GValue     *value,
 348                             GParamSpec *pspec)
 349 {
 350   GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
 351
 352   switch (prop_id)
 353     {
 354     case PROP_SUBMENU:
 355       g_value_set_object (value, gtk_menu_item_get_submenu (menu_item));
 356       break;
 357
 358     default:
 359       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 360       break;
 361     }
 362 }
 363
 364 static void
 365 gtk_menu_item_finalize (GObject *object)
 366 {
 367   GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
 368
 369   g_free (menu_item->accel_path);
 370
 371   G_OBJECT_CLASS (gtk_menu_item_parent_class)->finalize (object);
 372 }
 373
 374 static void
 375 gtk_menu_item_destroy (GtkObject *object)
 376 {
 377   GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
 378
 379   if (menu_item->submenu)
 380     gtk_widget_destroy (menu_item->submenu);
 381
 382   GTK_OBJECT_CLASS (gtk_menu_item_parent_class)->destroy (object);
 383 }
 384
 385 static void
 386 gtk_menu_item_detacher (GtkWidget *widget,
 387                         GtkMenu   *menu)
 388 {
 389   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
 390
 391   g_return_if_fail (menu_item->submenu == (GtkWidget*) menu);
 392
 393   menu_item->submenu = NULL;
 394 }
 395
 396 /**
 397  * gtk_menu_item_set_submenu:
 398  * @menu_item: a #GtkMenuItem
 399  * @submenu: the submenu, or %NULL
 400  *
 401  * Sets or replaces the menu item's submenu, or removes it when a %NULL
 402  * submenu is passed.
 403  **/
 404 void
 405 gtk_menu_item_set_submenu (GtkMenuItem *menu_item,
 406                            GtkWidget   *submenu)
 407 {
 408   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 409   g_return_if_fail (submenu == NULL || GTK_IS_MENU (submenu));
 410
 411   if (menu_item->submenu != submenu)
 412     {
 413       if (menu_item->submenu)
 414         gtk_menu_detach (GTK_MENU (menu_item->submenu));
 415
 416       if (submenu)
 417         {
 418           menu_item->submenu = submenu;
 419           gtk_menu_attach_to_widget (GTK_MENU (submenu),
 420                                      GTK_WIDGET (menu_item),
 421                                      gtk_menu_item_detacher);
 422         }
 423
 424       if (GTK_WIDGET (menu_item)->parent)
 425         gtk_widget_queue_resize (GTK_WIDGET (menu_item));
 426
 427       g_object_notify (G_OBJECT (menu_item), "submenu");
 428     }
 429 }
 430
 431 /**
 432  * gtk_menu_item_get_submenu:
 433  * @menu_item: a #GtkMenuItem
 434  *
 435  * Gets the submenu underneath this menu item, if any. See
 436  * gtk_menu_item_set_submenu().
 437  *
 438  * Return value: submenu for this menu item, or %NULL if none.
 439  **/
 440 GtkWidget *
 441 gtk_menu_item_get_submenu (GtkMenuItem *menu_item)
 442 {
 443   g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), NULL);
 444
 445   return menu_item->submenu;
 446 }
 447
 448 /**
 449  * gtk_menu_item_remove_submenu:
 450  * @menu_item: a #GtkMenuItem
 451  *
 452  * Removes the widget's submenu.
 453  *
 454  * Deprecated: 2.12: gtk_menu_item_remove_submenu() is deprecated and
 455  *                   should not be used in newly written code. Use
 456  *                   gtk_menu_item_set_submenu() instead.
 457  **/
 458 void
 459 gtk_menu_item_remove_submenu (GtkMenuItem *menu_item)
 460 {
 461   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 462
 463   gtk_menu_item_set_submenu (menu_item, NULL);
 464 }
 465
 466 void _gtk_menu_item_set_placement (GtkMenuItem         *menu_item,
 467                                    GtkSubmenuPlacement  placement);
 468
 469 void
 470 _gtk_menu_item_set_placement (GtkMenuItem         *menu_item,
 471                              GtkSubmenuPlacement  placement)
 472 {
 473   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 474
 475   menu_item->submenu_placement = placement;
 476 }
 477
 478 void
 479 gtk_menu_item_select (GtkMenuItem *menu_item)
 480 {
 481   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 482
 483   gtk_item_select (GTK_ITEM (menu_item));
 484
 485   /* Enable themeing of the parent menu item depending on whether
 486    * something is selected in its submenu
 487    */
 488   if (GTK_IS_MENU (GTK_WIDGET (menu_item)->parent))
 489     {
 490       GtkMenu *menu = GTK_MENU (GTK_WIDGET (menu_item)->parent);
 491
 492       if (menu->parent_menu_item)
 493         gtk_widget_queue_draw (GTK_WIDGET (menu->parent_menu_item));
 494     }
 495 }
 496
 497 void
 498 gtk_menu_item_deselect (GtkMenuItem *menu_item)
 499 {
 500   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 501
 502   gtk_item_deselect (GTK_ITEM (menu_item));
 503
 504   /* Enable themeing of the parent menu item depending on whether
 505    * something is selected in its submenu
 506    */
 507   if (GTK_IS_MENU (GTK_WIDGET (menu_item)->parent))
 508     {
 509       GtkMenu *menu = GTK_MENU (GTK_WIDGET (menu_item)->parent);
 510
 511       if (menu->parent_menu_item)
 512         gtk_widget_queue_draw (GTK_WIDGET (menu->parent_menu_item));
 513     }
 514 }
 515
 516 void
 517 gtk_menu_item_activate (GtkMenuItem *menu_item)
 518 {
 519   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 520
 521   g_signal_emit (menu_item, menu_item_signals[ACTIVATE], 0);
 522 }
 523
 524 void
 525 gtk_menu_item_toggle_size_request (GtkMenuItem *menu_item,
 526                                    gint        *requisition)
 527 {
 528   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 529
 530   g_signal_emit (menu_item, menu_item_signals[TOGGLE_SIZE_REQUEST], 0, requisition);
 531 }
 532
 533 void
 534 gtk_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
 535                                     gint         allocation)
 536 {
 537   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
 538
 539   g_signal_emit (menu_item, menu_item_signals[TOGGLE_SIZE_ALLOCATE], 0, allocation);
 540 }
 541
 542 static void
 543 gtk_menu_item_accel_width_foreach (GtkWidget *widget,
 544                                    gpointer data)
 545 {
 546   guint *width = data;
 547
 548   if (GTK_IS_ACCEL_LABEL (widget))
 549     {
 550       guint w;
 551
 552       w = gtk_accel_label_get_accel_width (GTK_ACCEL_LABEL (widget));
 553       *width = MAX (*width, w);
 554     }
 555   else if (GTK_IS_CONTAINER (widget))
 556     gtk_container_foreach (GTK_CONTAINER (widget),
 557                            gtk_menu_item_accel_width_foreach,
 558                            data);
 559 }
 560
 561 static gint
 562 get_minimum_width (GtkWidget *widget)
 563 {
 564   PangoContext *context;
 565   PangoFontMetrics *metrics;
 566   gint height;
 567
 568   context = gtk_widget_get_pango_context (widget);
 569   metrics = pango_context_get_metrics (context,
 570                                        widget->style->font_desc,
 571                                        pango_context_get_language (context));
 572
 573   height = pango_font_metrics_get_ascent (metrics) +
 574       pango_font_metrics_get_descent (metrics);
 575
 576   pango_font_metrics_unref (metrics);
 577
 578   return PANGO_PIXELS (7 * height);
 579 }
 580
 581 static void
 582 gtk_menu_item_size_request (GtkWidget      *widget,
 583                             GtkRequisition *requisition)
 584 {
 585   GtkMenuItem *menu_item;
 586   GtkBin *bin;
 587   guint accel_width;
 588   guint horizontal_padding;
 589   GtkPackDirection pack_dir;
 590   GtkPackDirection child_pack_dir;
 591
 592   g_return_if_fail (GTK_IS_MENU_ITEM (widget));
 593   g_return_if_fail (requisition != NULL);
 594
 595   gtk_widget_style_get (widget,
 596                         "horizontal-padding", &horizontal_padding,
 597                         NULL);
 598
 599   bin = GTK_BIN (widget);
 600   menu_item = GTK_MENU_ITEM (widget);
 601
 602   if (GTK_IS_MENU_BAR (widget->parent))
 603     {
 604       pack_dir = gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (widget->parent));
 605       child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (widget->parent));
 606     }
 607   else
 608     {
 609       pack_dir = GTK_PACK_DIRECTION_LTR;
 610       child_pack_dir = GTK_PACK_DIRECTION_LTR;
 611     }
 612
 613   requisition->width = (GTK_CONTAINER (widget)->border_width +
 614                         widget->style->xthickness) * 2;
 615   requisition->height = (GTK_CONTAINER (widget)->border_width +
 616                          widget->style->ythickness) * 2;
 617
 618   if ((pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL) &&
 619       (child_pack_dir == GTK_PACK_DIRECTION_LTR || child_pack_dir == GTK_PACK_DIRECTION_RTL))
 620     requisition->width += 2 * horizontal_padding;
 621   else if ((pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT) &&
 622       (child_pack_dir == GTK_PACK_DIRECTION_TTB || child_pack_dir == GTK_PACK_DIRECTION_BTT))
 623     requisition->height += 2 * horizontal_padding;
 624
 625   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 626     {
 627       GtkRequisition child_requisition;
 628
 629       gtk_widget_size_request (bin->child, &child_requisition);
 630
 631       requisition->width += child_requisition.width;
 632       requisition->height += child_requisition.height;
 633
 634       if (menu_item->submenu && menu_item->show_submenu_indicator)
 635         {
 636           guint arrow_spacing;
 637
 638           gtk_widget_style_get (widget,
 639                                 "arrow-spacing", &arrow_spacing,
 640                                 NULL);
 641
 642           requisition->width += child_requisition.height;
 643           requisition->width += arrow_spacing;
 644
 645           requisition->width = MAX (requisition->width, get_minimum_width (widget));
 646         }
 647     }
 648   else /* separator item */
 649     {
 650       gboolean wide_separators;
 651       gint     separator_height;
 652
 653       gtk_widget_style_get (widget,
 654                             "wide-separators",  &wide_separators,
 655                             "separator-height", &separator_height,
 656                             NULL);
 657
 658       if (wide_separators)
 659         requisition->height += separator_height + widget->style->ythickness;
 660       else
 661         requisition->height += widget->style->ythickness * 2;
 662     }
 663
 664   accel_width = 0;
 665   gtk_container_foreach (GTK_CONTAINER (menu_item),
 666                          gtk_menu_item_accel_width_foreach,
 667                          &accel_width);
 668   menu_item->accelerator_width = accel_width;
 669 }
 670
 671 static void
 672 gtk_menu_item_size_allocate (GtkWidget     *widget,
 673                              GtkAllocation *allocation)
 674 {
 675   GtkMenuItem *menu_item;
 676   GtkBin *bin;
 677   GtkAllocation child_allocation;
 678   GtkTextDirection direction;
 679   GtkPackDirection pack_dir;
 680   GtkPackDirection child_pack_dir;
 681
 682   g_return_if_fail (GTK_IS_MENU_ITEM (widget));
 683   g_return_if_fail (allocation != NULL);
 684
 685   menu_item = GTK_MENU_ITEM (widget);
 686   bin = GTK_BIN (widget);
 687
 688   direction = gtk_widget_get_direction (widget);
 689
 690   if (GTK_IS_MENU_BAR (widget->parent))
 691     {
 692       pack_dir = gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (widget->parent));
 693       child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (widget->parent));
 694     }
 695   else
 696     {
 697       pack_dir = GTK_PACK_DIRECTION_LTR;
 698       child_pack_dir = GTK_PACK_DIRECTION_LTR;
 699     }
 700
 701   widget->allocation = *allocation;
 702
 703   if (bin->child)
 704     {
 705       GtkRequisition child_requisition;
 706       guint horizontal_padding;
 707
 708       gtk_widget_style_get (widget,
 709                             "horizontal-padding", &horizontal_padding,
 710                             NULL);
 711
 712       child_allocation.x = GTK_CONTAINER (widget)->border_width + widget->style->xthickness;
 713       child_allocation.y = GTK_CONTAINER (widget)->border_width + widget->style->ythickness;
 714
 715       if ((pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL) &&
 716           (child_pack_dir == GTK_PACK_DIRECTION_LTR || child_pack_dir == GTK_PACK_DIRECTION_RTL))
 717         child_allocation.x += horizontal_padding;
 718       else if ((pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT) &&
 719                (child_pack_dir == GTK_PACK_DIRECTION_TTB || child_pack_dir == GTK_PACK_DIRECTION_BTT))
 720         child_allocation.y += horizontal_padding;
 721
 722       child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2);
 723       child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
 724
 725       if (child_pack_dir == GTK_PACK_DIRECTION_LTR ||
 726           child_pack_dir == GTK_PACK_DIRECTION_RTL)
 727         {
 728           if ((direction == GTK_TEXT_DIR_LTR) == (child_pack_dir != GTK_PACK_DIRECTION_RTL))
 729             child_allocation.x += GTK_MENU_ITEM (widget)->toggle_size;
 730           child_allocation.width -= GTK_MENU_ITEM (widget)->toggle_size;
 731         }
 732       else
 733         {
 734           if ((direction == GTK_TEXT_DIR_LTR) == (child_pack_dir != GTK_PACK_DIRECTION_BTT))
 735             child_allocation.y += GTK_MENU_ITEM (widget)->toggle_size;
 736           child_allocation.height -= GTK_MENU_ITEM (widget)->toggle_size;
 737         }
 738
 739       child_allocation.x += widget->allocation.x;
 740       child_allocation.y += widget->allocation.y;
 741
 742       gtk_widget_get_child_requisition (bin->child, &child_requisition);
 743       if (menu_item->submenu && menu_item->show_submenu_indicator)
 744         {
 745           if (direction == GTK_TEXT_DIR_RTL)
 746             child_allocation.x += child_requisition.height;
 747           child_allocation.width -= child_requisition.height;
 748         }
 749
 750       if (child_allocation.width < 1)
 751         child_allocation.width = 1;
 752
 753       gtk_widget_size_allocate (bin->child, &child_allocation);
 754     }
 755
 756   if (GTK_WIDGET_REALIZED (widget))
 757     gdk_window_move_resize (menu_item->event_window,
 758                             allocation->x, allocation->y,
 759                             allocation->width, allocation->height);
 760
 761   if (menu_item->submenu)
 762     gtk_menu_reposition (GTK_MENU (menu_item->submenu));
 763 }
 764
 765 static void
 766 gtk_menu_item_realize (GtkWidget *widget)
 767 {
 768   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
 769   GdkWindowAttr attributes;
 770   gint attributes_mask;
 771
 772   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 773
 774   widget->window = gtk_widget_get_parent_window (widget);
 775   g_object_ref (widget->window);
 776
 777   attributes.x = widget->allocation.x;
 778   attributes.y = widget->allocation.y;
 779   attributes.width = widget->allocation.width;
 780   attributes.height = widget->allocation.height;
 781   attributes.window_type = GDK_WINDOW_CHILD;
 782   attributes.wclass = GDK_INPUT_ONLY;
 783   attributes.event_mask = (gtk_widget_get_events (widget) |
 784                            GDK_BUTTON_PRESS_MASK |
 785                            GDK_BUTTON_RELEASE_MASK |
 786                            GDK_ENTER_NOTIFY_MASK |
 787                            GDK_LEAVE_NOTIFY_MASK |
 788                            GDK_POINTER_MOTION_MASK);
 789
 790   attributes_mask = GDK_WA_X | GDK_WA_Y;
 791   menu_item->event_window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 792   gdk_window_set_user_data (menu_item->event_window, widget);
 793
 794   widget->style = gtk_style_attach (widget->style, widget->window);
 795 }
 796
 797 static void
 798 gtk_menu_item_unrealize (GtkWidget *widget)
 799 {
 800   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
 801
 802   gdk_window_set_user_data (menu_item->event_window, NULL);
 803   gdk_window_destroy (menu_item->event_window);
 804   menu_item->event_window = NULL;
 805
 806   if (GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->unrealize)
 807     (* GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->unrealize) (widget);
 808 }
 809
 810 static void
 811 gtk_menu_item_map (GtkWidget *widget)
 812 {
 813   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
 814
 815   GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->map (widget);
 816
 817   gdk_window_show (menu_item->event_window);
 818 }
 819
 820 static void
 821 gtk_menu_item_unmap (GtkWidget *widget)
 822 {
 823   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
 824
 825   gdk_window_hide (menu_item->event_window);
 826
 827   GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->unmap (widget);
 828 }
 829
 830 static void
 831 gtk_menu_item_paint (GtkWidget    *widget,
 832                      GdkRectangle *area)
 833 {
 834   GtkMenuItem *menu_item;
 835   GtkStateType state_type;
 836   GtkShadowType shadow_type, selected_shadow_type;
 837   gint width, height;
 838   gint x, y;
 839   gint border_width = GTK_CONTAINER (widget)->border_width;
 840
 841   if (GTK_WIDGET_DRAWABLE (widget))
 842     {
 843       menu_item = GTK_MENU_ITEM (widget);
 844
 845       state_type = widget->state;
 846
 847       x = widget->allocation.x + border_width;
 848       y = widget->allocation.y + border_width;
 849       width = widget->allocation.width - border_width * 2;
 850       height = widget->allocation.height - border_width * 2;
 851
 852       if ((state_type == GTK_STATE_PRELIGHT) &&
 853           (GTK_BIN (menu_item)->child))
 854         {
 855           gtk_widget_style_get (widget,
 856                                 "selected-shadow-type", &selected_shadow_type,
 857                                 NULL);
 858           gtk_paint_box (widget->style,
 859                          widget->window,
 860                          GTK_STATE_PRELIGHT,
 861                          selected_shadow_type,
 862                          area, widget, "menuitem",
 863                          x, y, width, height);
 864         }
 865
 866       if (menu_item->submenu && menu_item->show_submenu_indicator)
 867         {
 868           gint arrow_x, arrow_y;
 869           gint arrow_size;
 870           gint arrow_extent;
 871           guint horizontal_padding;
 872           gfloat arrow_scaling;
 873           GtkTextDirection direction;
 874           GtkArrowType arrow_type;
 875           PangoContext *context;
 876           PangoFontMetrics *metrics;
 877
 878           direction = gtk_widget_get_direction (widget);
 879
 880           gtk_widget_style_get (widget,
 881                                 "horizontal-padding", &horizontal_padding,
 882                                 "arrow-scaling", &arrow_scaling,
 883                                 NULL);
 884
 885           context = gtk_widget_get_pango_context (GTK_BIN (menu_item)->child);
 886           metrics = pango_context_get_metrics (context,
 887                                                GTK_WIDGET (GTK_BIN (menu_item)->child)->style->font_desc,
 888                                                pango_context_get_language (context));
 889
 890           arrow_size = (PANGO_PIXELS (pango_font_metrics_get_ascent (metrics) +
 891                                       pango_font_metrics_get_descent (metrics)));
 892
 893           pango_font_metrics_unref (metrics);
 894
 895           arrow_extent = arrow_size * arrow_scaling;
 896
 897           g_printerr ("%s: scaling = %f   size = %d   extent = %d\n",
 898                       G_STRFUNC, arrow_scaling, arrow_size, arrow_extent);
 899
 900           shadow_type = GTK_SHADOW_OUT;
 901           if (state_type == GTK_STATE_PRELIGHT)
 902             shadow_type = GTK_SHADOW_IN;
 903
 904           if (direction == GTK_TEXT_DIR_LTR)
 905             {
 906               arrow_x = x + width - horizontal_padding - arrow_extent;
 907               arrow_type = GTK_ARROW_RIGHT;
 908             }
 909           else
 910             {
 911               arrow_x = x + horizontal_padding;
 912               arrow_type = GTK_ARROW_LEFT;
 913             }
 914
 915           arrow_y = y + (height - arrow_extent) / 2;
 916
 917           gtk_paint_arrow (widget->style, widget->window,
 918                            state_type, shadow_type,
 919                            area, widget, "menuitem",
 920                            arrow_type, TRUE,
 921                            arrow_x, arrow_y,
 922                            arrow_extent, arrow_extent);
 923         }
 924       else if (!GTK_BIN (menu_item)->child)
 925         {
 926           gboolean wide_separators;
 927           gint     separator_height;
 928           guint    horizontal_padding;
 929
 930           gtk_widget_style_get (widget,
 931                                 "wide-separators",    &wide_separators,
 932                                 "separator-height",   &separator_height,
 933                                 "horizontal-padding", &horizontal_padding,
 934                                 NULL);
 935
 936           if (wide_separators)
 937             gtk_paint_box (widget->style, widget->window,
 938                            GTK_STATE_NORMAL, GTK_SHADOW_ETCHED_OUT,
 939                            area, widget, "hseparator",
 940                            widget->allocation.x + horizontal_padding + widget->style->xthickness,
 941                            widget->allocation.y + (widget->allocation.height -
 942                                                    separator_height -
 943                                                    widget->style->ythickness) / 2,
 944                            widget->allocation.width -
 945                            2 * (horizontal_padding + widget->style->xthickness),
 946                            separator_height);
 947           else
 948             gtk_paint_hline (widget->style, widget->window,
 949                              GTK_STATE_NORMAL, area, widget, "menuitem",
 950                              widget->allocation.x + horizontal_padding + widget->style->xthickness,
 951                              widget->allocation.x + widget->allocation.width - horizontal_padding - widget->style->xthickness - 1,
 952                              widget->allocation.y + (widget->allocation.height -
 953                                                      widget->style->ythickness) / 2);
 954         }
 955     }
 956 }
 957
 958 static gint
 959 gtk_menu_item_expose (GtkWidget      *widget,
 960                       GdkEventExpose *event)
 961 {
 962   g_return_val_if_fail (GTK_IS_MENU_ITEM (widget), FALSE);
 963   g_return_val_if_fail (event != NULL, FALSE);
 964
 965   if (GTK_WIDGET_DRAWABLE (widget))
 966     {
 967       gtk_menu_item_paint (widget, &event->area);
 968
 969       (* GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->expose_event) (widget, event);
 970     }
 971
 972   return FALSE;
 973 }
 974
 975 static void
 976 gtk_real_menu_item_select (GtkItem *item)
 977 {
 978   GtkMenuItem *menu_item;
 979   gboolean touchscreen_mode;
 980
 981   g_return_if_fail (GTK_IS_MENU_ITEM (item));
 982
 983   menu_item = GTK_MENU_ITEM (item);
 984
 985   g_object_get (gtk_widget_get_settings (GTK_WIDGET (item)),
 986                 "gtk-touchscreen-mode", &touchscreen_mode,
 987                 NULL);
 988
 989   if (!touchscreen_mode &&
 990       menu_item->submenu &&
 991       (!GTK_WIDGET_MAPPED (menu_item->submenu) ||
 992        GTK_MENU (menu_item->submenu)->tearoff_active))
 993     {
 994       _gtk_menu_item_popup_submenu (GTK_WIDGET (menu_item), TRUE);
 995     }
 996
 997   gtk_widget_set_state (GTK_WIDGET (menu_item), GTK_STATE_PRELIGHT);
 998   gtk_widget_queue_draw (GTK_WIDGET (menu_item));
 999 }
1000
1001 static void
1002 gtk_real_menu_item_deselect (GtkItem *item)
1003 {
1004   GtkMenuItem *menu_item;
1005
1006   g_return_if_fail (GTK_IS_MENU_ITEM (item));
1007
1008   menu_item = GTK_MENU_ITEM (item);
1009
1010   if (menu_item->submenu)
1011     _gtk_menu_item_popdown_submenu (GTK_WIDGET (menu_item));
1012
1013   gtk_widget_set_state (GTK_WIDGET (menu_item), GTK_STATE_NORMAL);
1014   gtk_widget_queue_draw (GTK_WIDGET (menu_item));
1015 }
1016
1017 static gboolean
1018 gtk_menu_item_mnemonic_activate (GtkWidget *widget,
1019                                  gboolean   group_cycling)
1020 {
1021   if (group_cycling &&
1022       widget->parent &&
1023       GTK_IS_MENU_SHELL (widget->parent) &&
1024       GTK_MENU_SHELL (widget->parent)->active)
1025     {
1026       gtk_menu_shell_select_item (GTK_MENU_SHELL (widget->parent),
1027                                   widget);
1028     }
1029   else
1030     g_signal_emit (widget, menu_item_signals[ACTIVATE_ITEM], 0);
1031
1032   return TRUE;
1033 }
1034
1035 static void
1036 gtk_real_menu_item_activate_item (GtkMenuItem *menu_item)
1037 {
1038   GtkWidget *widget;
1039
1040   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1041
1042   widget = GTK_WIDGET (menu_item);
1043
1044   if (widget->parent &&
1045       GTK_IS_MENU_SHELL (widget->parent))
1046     {
1047       if (menu_item->submenu == NULL)
1048         gtk_menu_shell_activate_item (GTK_MENU_SHELL (widget->parent),
1049                                       widget, TRUE);
1050       else
1051         {
1052           GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget->parent);
1053
1054           _gtk_menu_shell_activate (menu_shell);
1055
1056           gtk_menu_shell_select_item (GTK_MENU_SHELL (widget->parent), widget);
1057           _gtk_menu_item_popup_submenu (widget, FALSE);
1058
1059           gtk_menu_shell_select_first (GTK_MENU_SHELL (menu_item->submenu), TRUE);
1060         }
1061     }
1062 }
1063
1064 static void
1065 gtk_real_menu_item_toggle_size_request (GtkMenuItem *menu_item,
1066                                         gint        *requisition)
1067 {
1068   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1069
1070   *requisition = 0;
1071 }
1072
1073 static void
1074 gtk_real_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
1075                                          gint         allocation)
1076 {
1077   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1078
1079   menu_item->toggle_size = allocation;
1080 }
1081
1082 static void
1083 gtk_menu_item_real_popup_submenu (GtkWidget *widget,
1084                                   gboolean   remember_exact_time)
1085 {
1086   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
1087
1088   if (GTK_WIDGET_IS_SENSITIVE (menu_item->submenu))
1089     {
1090       gboolean take_focus;
1091
1092       take_focus = gtk_menu_shell_get_take_focus (GTK_MENU_SHELL (widget->parent));
1093       gtk_menu_shell_set_take_focus (GTK_MENU_SHELL (menu_item->submenu),
1094                                      take_focus);
1095
1096       if (remember_exact_time)
1097         {
1098           GTimeVal *popup_time = g_new0 (GTimeVal, 1);
1099
1100           g_get_current_time (popup_time);
1101
1102           g_object_set_data_full (G_OBJECT (menu_item->submenu),
1103                                   "gtk-menu-exact-popup-time", popup_time,
1104                                   (GDestroyNotify) g_free);
1105         }
1106       else
1107         {
1108           g_object_set_data (G_OBJECT (menu_item->submenu),
1109                              "gtk-menu-exact-popup-time", NULL);
1110         }
1111
1112       gtk_menu_popup (GTK_MENU (menu_item->submenu),
1113                       widget->parent,
1114                       widget,
1115                       gtk_menu_item_position_menu,
1116                       menu_item,
1117                       GTK_MENU_SHELL (widget->parent)->button,
1118                       0);
1119     }
1120
1121   /* Enable themeing of the parent menu item depending on whether
1122    * its submenu is shown or not.
1123    */
1124   gtk_widget_queue_draw (widget);
1125 }
1126
1127 static gint
1128 gtk_menu_item_popup_timeout (gpointer data)
1129 {
1130   GtkMenuItem *menu_item;
1131   GtkWidget *parent;
1132
1133   menu_item = GTK_MENU_ITEM (data);
1134
1135   parent = GTK_WIDGET (menu_item)->parent;
1136
1137   if ((GTK_IS_MENU_SHELL (parent) && GTK_MENU_SHELL (parent)->active) ||
1138       (GTK_IS_MENU (parent) && GTK_MENU (parent)->torn_off))
1139     {
1140       gtk_menu_item_real_popup_submenu (GTK_WIDGET (menu_item), TRUE);
1141       if (menu_item->timer_from_keypress && menu_item->submenu)
1142         GTK_MENU_SHELL (menu_item->submenu)->ignore_enter = TRUE;
1143     }
1144
1145   menu_item->timer = 0;
1146
1147   return FALSE;
1148 }
1149
1150 static gint
1151 get_popup_delay (GtkWidget *widget)
1152 {
1153   if (GTK_IS_MENU_SHELL (widget->parent))
1154     {
1155       return _gtk_menu_shell_get_popup_delay (GTK_MENU_SHELL (widget->parent));
1156     }
1157   else
1158     {
1159       gint popup_delay;
1160
1161       g_object_get (gtk_widget_get_settings (widget),
1162                     "gtk-menu-popup-delay", &popup_delay,
1163                     NULL);
1164
1165       return popup_delay;
1166     }
1167 }
1168
1169 void
1170 _gtk_menu_item_popup_submenu (GtkWidget *widget,
1171                               gboolean   with_delay)
1172 {
1173   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
1174
1175   if (menu_item->timer)
1176     {
1177       g_source_remove (menu_item->timer);
1178       menu_item->timer = 0;
1179       with_delay = FALSE;
1180     }
1181
1182   if (with_delay)
1183     {
1184       gint popup_delay = get_popup_delay (widget);
1185
1186       if (popup_delay > 0)
1187         {
1188           GdkEvent *event = gtk_get_current_event ();
1189
1190           menu_item->timer = gdk_threads_add_timeout (popup_delay,
1191                                                       gtk_menu_item_popup_timeout,
1192                                                       menu_item);
1193
1194           if (event &&
1195               event->type != GDK_BUTTON_PRESS &&
1196               event->type != GDK_ENTER_NOTIFY)
1197             menu_item->timer_from_keypress = TRUE;
1198           else
1199             menu_item->timer_from_keypress = FALSE;
1200
1201           if (event)
1202             gdk_event_free (event);
1203
1204           return;
1205         }
1206     }
1207
1208   gtk_menu_item_real_popup_submenu (widget, FALSE);
1209 }
1210
1211 void
1212 _gtk_menu_item_popdown_submenu (GtkWidget *widget)
1213 {
1214   GtkMenuItem *menu_item;
1215
1216   menu_item = GTK_MENU_ITEM (widget);
1217
1218   if (menu_item->submenu)
1219     {
1220       g_object_set_data (G_OBJECT (menu_item->submenu),
1221                          "gtk-menu-exact-popup-time", NULL);
1222
1223       if (menu_item->timer)
1224         {
1225           g_source_remove (menu_item->timer);
1226           menu_item->timer = 0;
1227         }
1228       else
1229         gtk_menu_popdown (GTK_MENU (menu_item->submenu));
1230
1231       gtk_widget_queue_draw (widget);
1232     }
1233 }
1234
1235 static void
1236 get_offsets (GtkMenu *menu,
1237              gint    *horizontal_offset,
1238              gint    *vertical_offset)
1239 {
1240   gint vertical_padding;
1241   gint horizontal_padding;
1242
1243   gtk_widget_style_get (GTK_WIDGET (menu),
1244                         "horizontal-offset", horizontal_offset,
1245                         "vertical-offset", vertical_offset,
1246                         "horizontal-padding", &horizontal_padding,
1247                         "vertical-padding", &vertical_padding,
1248                         NULL);
1249
1250   *vertical_offset -= GTK_WIDGET (menu)->style->ythickness;
1251   *vertical_offset -= vertical_padding;
1252   *horizontal_offset += horizontal_padding;
1253 }
1254
1255 static void
1256 gtk_menu_item_position_menu (GtkMenu  *menu,
1257                              gint     *x,
1258                              gint     *y,
1259                              gboolean *push_in,
1260                              gpointer  user_data)
1261 {
1262   GtkMenuItem *menu_item;
1263   GtkWidget *widget;
1264   GtkMenuItem *parent_menu_item;
1265   GdkScreen *screen;
1266   gint twidth, theight;
1267   gint tx, ty;
1268   GtkTextDirection direction;
1269   GdkRectangle monitor;
1270   gint monitor_num;
1271   gint horizontal_offset;
1272   gint vertical_offset;
1273   gint parent_xthickness;
1274   gint available_left, available_right;
1275
1276   g_return_if_fail (menu != NULL);
1277   g_return_if_fail (x != NULL);
1278   g_return_if_fail (y != NULL);
1279
1280   menu_item = GTK_MENU_ITEM (user_data);
1281   widget = GTK_WIDGET (user_data);
1282
1283   if (push_in)
1284     *push_in = FALSE;
1285
1286   direction = gtk_widget_get_direction (widget);
1287
1288   twidth = GTK_WIDGET (menu)->requisition.width;
1289   theight = GTK_WIDGET (menu)->requisition.height;
1290
1291   screen = gtk_widget_get_screen (GTK_WIDGET (menu));
1292   monitor_num = gdk_screen_get_monitor_at_window (screen, menu_item->event_window);
1293   if (monitor_num < 0)
1294     monitor_num = 0;
1295   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
1296
1297   if (!gdk_window_get_origin (widget->window, &tx, &ty))
1298     {
1299       g_warning ("Menu not on screen");
1300       return;
1301     }
1302
1303   tx += widget->allocation.x;
1304   ty += widget->allocation.y;
1305
1306   get_offsets (menu, &horizontal_offset, &vertical_offset);
1307
1308   available_left = tx - monitor.x;
1309   available_right = monitor.x + monitor.width - (tx + widget->allocation.width);
1310
1311   if (GTK_IS_MENU_BAR (widget->parent))
1312     {
1313       menu_item->from_menubar = TRUE;
1314     }
1315   else if (GTK_IS_MENU (widget->parent))
1316     {
1317       if (GTK_MENU (widget->parent)->parent_menu_item)
1318         menu_item->from_menubar = GTK_MENU_ITEM (GTK_MENU (widget->parent)->parent_menu_item)->from_menubar;
1319       else
1320         menu_item->from_menubar = FALSE;
1321     }
1322   else
1323     {
1324       menu_item->from_menubar = FALSE;
1325     }
1326
1327   switch (menu_item->submenu_placement)
1328     {
1329     case GTK_TOP_BOTTOM:
1330       if (direction == GTK_TEXT_DIR_LTR)
1331         menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
1332       else
1333         {
1334           menu_item->submenu_direction = GTK_DIRECTION_LEFT;
1335           tx += widget->allocation.width - twidth;
1336         }
1337       if ((ty + widget->allocation.height + theight) <= monitor.y + monitor.height)
1338         ty += widget->allocation.height;
1339       else if ((ty - theight) >= monitor.y)
1340         ty -= theight;
1341       else if (monitor.y + monitor.height - (ty + widget->allocation.height) > ty)
1342         ty += widget->allocation.height;
1343       else
1344         ty -= theight;
1345       break;
1346
1347     case GTK_LEFT_RIGHT:
1348       if (GTK_IS_MENU (widget->parent))
1349         parent_menu_item = GTK_MENU_ITEM (GTK_MENU (widget->parent)->parent_menu_item);
1350       else
1351         parent_menu_item = NULL;
1352
1353       parent_xthickness = widget->parent->style->xthickness;
1354
1355       if (parent_menu_item && !GTK_MENU (widget->parent)->torn_off)
1356         {
1357           menu_item->submenu_direction = parent_menu_item->submenu_direction;
1358         }
1359       else
1360         {
1361           if (direction == GTK_TEXT_DIR_LTR)
1362             menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
1363           else
1364             menu_item->submenu_direction = GTK_DIRECTION_LEFT;
1365         }
1366
1367       switch (menu_item->submenu_direction)
1368         {
1369         case GTK_DIRECTION_LEFT:
1370           if (tx - twidth - parent_xthickness - horizontal_offset >= monitor.x ||
1371               available_left >= available_right)
1372             tx -= twidth + parent_xthickness + horizontal_offset;
1373           else
1374             {
1375               menu_item->submenu_direction = GTK_DIRECTION_RIGHT;
1376               tx += widget->allocation.width + parent_xthickness + horizontal_offset;
1377             }
1378           break;
1379
1380         case GTK_DIRECTION_RIGHT:
1381           if (tx + widget->allocation.width + parent_xthickness + horizontal_offset + twidth <= monitor.x + monitor.width ||
1382               available_right >= available_left)
1383             tx += widget->allocation.width + parent_xthickness + horizontal_offset;
1384           else
1385             {
1386               menu_item->submenu_direction = GTK_DIRECTION_LEFT;
1387               tx -= twidth + parent_xthickness + horizontal_offset;
1388             }
1389           break;
1390         }
1391
1392       ty += vertical_offset;
1393
1394       /* If the height of the menu doesn't fit we move it upward. */
1395       ty = CLAMP (ty, monitor.y, MAX (monitor.y, monitor.y + monitor.height - theight));
1396       break;
1397     }
1398
1399   /* If we have negative, tx, here it is because we can't get
1400    * the menu all the way on screen. Favor the left portion.
1401    */
1402   *x = CLAMP (tx, monitor.x, MAX (monitor.x, monitor.x + monitor.width - twidth));
1403   *y = ty;
1404
1405   gtk_menu_set_monitor (menu, monitor_num);
1406
1407   if (!GTK_WIDGET_VISIBLE (menu->toplevel))
1408     {
1409       gtk_window_set_type_hint (GTK_WINDOW (menu->toplevel), menu_item->from_menubar?
1410                                 GDK_WINDOW_TYPE_HINT_DROPDOWN_MENU : GDK_WINDOW_TYPE_HINT_POPUP_MENU);
1411     }
1412 }
1413
1414 /**
1415  * gtk_menu_item_set_right_justified:
1416  * @menu_item: a #GtkMenuItem.
1417  * @right_justified: if %TRUE the menu item will appear at the
1418  *   far right if added to a menu bar.
1419  *
1420  * Sets whether the menu item appears justified at the right
1421  * side of a menu bar. This was traditionally done for "Help" menu
1422  * items, but is now considered a bad idea. (If the widget
1423  * layout is reversed for a right-to-left language like Hebrew
1424  * or Arabic, right-justified-menu-items appear at the left.)
1425  **/
1426 void
1427 gtk_menu_item_set_right_justified (GtkMenuItem *menu_item,
1428                                    gboolean     right_justified)
1429 {
1430   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1431
1432   right_justified = right_justified != FALSE;
1433
1434   if (right_justified != menu_item->right_justify)
1435     {
1436       menu_item->right_justify = right_justified;
1437       gtk_widget_queue_resize (GTK_WIDGET (menu_item));
1438     }
1439 }
1440
1441 /**
1442  * gtk_menu_item_get_right_justified:
1443  * @menu_item: a #GtkMenuItem
1444  *
1445  * Gets whether the menu item appears justified at the right
1446  * side of the menu bar.
1447  *
1448  * Return value: %TRUE if the menu item will appear at the
1449  *   far right if added to a menu bar.
1450  **/
1451 gboolean
1452 gtk_menu_item_get_right_justified (GtkMenuItem *menu_item)
1453 {
1454   g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), FALSE);
1455
1456   return menu_item->right_justify;
1457 }
1458
1459
1460 static void
1461 gtk_menu_item_show_all (GtkWidget *widget)
1462 {
1463   GtkMenuItem *menu_item;
1464
1465   g_return_if_fail (GTK_IS_MENU_ITEM (widget));
1466
1467   menu_item = GTK_MENU_ITEM (widget);
1468
1469   /* show children including submenu */
1470   if (menu_item->submenu)
1471     gtk_widget_show_all (menu_item->submenu);
1472   gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL);
1473
1474   gtk_widget_show (widget);
1475 }
1476
1477 static void
1478 gtk_menu_item_hide_all (GtkWidget *widget)
1479 {
1480   GtkMenuItem *menu_item;
1481
1482   g_return_if_fail (GTK_IS_MENU_ITEM (widget));
1483
1484   gtk_widget_hide (widget);
1485
1486   menu_item = GTK_MENU_ITEM (widget);
1487
1488   /* hide children including submenu */
1489   gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_hide_all, NULL);
1490   if (menu_item->submenu)
1491     gtk_widget_hide_all (menu_item->submenu);
1492 }
1493
1494 static gboolean
1495 gtk_menu_item_can_activate_accel (GtkWidget *widget,
1496                                   guint      signal_id)
1497 {
1498   /* Chain to the parent GtkMenu for further checks */
1499   return (GTK_WIDGET_IS_SENSITIVE (widget) && GTK_WIDGET_VISIBLE (widget) &&
1500           widget->parent && gtk_widget_can_activate_accel (widget->parent, signal_id));
1501 }
1502
1503 static void
1504 gtk_menu_item_accel_name_foreach (GtkWidget *widget,
1505                                   gpointer data)
1506 {
1507   const gchar **path_p = data;
1508
1509   if (!*path_p)
1510     {
1511       if (GTK_IS_LABEL (widget))
1512         {
1513           *path_p = gtk_label_get_text (GTK_LABEL (widget));
1514           if (*path_p && (*path_p)[0] == 0)
1515             *path_p = NULL;
1516         }
1517       else if (GTK_IS_CONTAINER (widget))
1518         gtk_container_foreach (GTK_CONTAINER (widget),
1519                                gtk_menu_item_accel_name_foreach,
1520                                data);
1521     }
1522 }
1523
1524 static void
1525 gtk_menu_item_parent_set (GtkWidget *widget,
1526                           GtkWidget *previous_parent)
1527 {
1528   GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
1529   GtkMenu *menu = GTK_IS_MENU (widget->parent) ? GTK_MENU (widget->parent) : NULL;
1530
1531   if (menu)
1532     _gtk_menu_item_refresh_accel_path (menu_item,
1533                                        menu->accel_path,
1534                                        menu->accel_group,
1535                                        TRUE);
1536
1537   if (GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->parent_set)
1538     GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->parent_set (widget, previous_parent);
1539 }
1540
1541 void
1542 _gtk_menu_item_refresh_accel_path (GtkMenuItem   *menu_item,
1543                                    const gchar   *prefix,
1544                                    GtkAccelGroup *accel_group,
1545                                    gboolean       group_changed)
1546 {
1547   const gchar *path;
1548   GtkWidget *widget;
1549
1550   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1551   g_return_if_fail (!accel_group || GTK_IS_ACCEL_GROUP (accel_group));
1552
1553   widget = GTK_WIDGET (menu_item);
1554
1555   if (!accel_group)
1556     {
1557       gtk_widget_set_accel_path (widget, NULL, NULL);
1558       return;
1559     }
1560
1561   path = _gtk_widget_get_accel_path (widget, NULL);
1562   if (!path)                                    /* no active accel_path yet */
1563     {
1564       path = menu_item->accel_path;
1565       if (!path && prefix)
1566         {
1567           gchar *postfix = NULL;
1568
1569           /* try to construct one from label text */
1570           gtk_container_foreach (GTK_CONTAINER (menu_item),
1571                                  gtk_menu_item_accel_name_foreach,
1572                                  &postfix);
1573           menu_item->accel_path = postfix ? g_strconcat (prefix, "/", postfix, NULL) : NULL;
1574           path = menu_item->accel_path;
1575         }
1576       if (path)
1577         gtk_widget_set_accel_path (widget, path, accel_group);
1578     }
1579   else if (group_changed)                       /* reinstall accelerators */
1580     gtk_widget_set_accel_path (widget, path, accel_group);
1581 }
1582
1583 /**
1584  * gtk_menu_item_set_accel_path
1585  * @menu_item:  a valid #GtkMenuItem
1586  * @accel_path: accelerator path, corresponding to this menu item's
1587  *              functionality, or %NULL to unset the current path.
1588  *
1589  * Set the accelerator path on @menu_item, through which runtime changes of the
1590  * menu item's accelerator caused by the user can be identified and saved to
1591  * persistant storage (see gtk_accel_map_save() on this).
1592  * To setup a default accelerator for this menu item, call
1593  * gtk_accel_map_add_entry() with the same @accel_path.
1594  * See also gtk_accel_map_add_entry() on the specifics of accelerator paths,
1595  * and gtk_menu_set_accel_path() for a more convenient variant of this function.
1596  *
1597  * This function is basically a convenience wrapper that handles calling
1598  * gtk_widget_set_accel_path() with the appropriate accelerator group for
1599  * the menu item.
1600  *
1601  * Note that you do need to set an accelerator on the parent menu with
1602  * gtk_menu_set_accel_group() for this to work.
1603  */
1604 void
1605 gtk_menu_item_set_accel_path (GtkMenuItem *menu_item,
1606                               const gchar *accel_path)
1607 {
1608   GtkWidget *widget;
1609
1610   g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
1611   g_return_if_fail (accel_path == NULL ||
1612                     (accel_path[0] == '<' && strchr (accel_path, '/')));
1613
1614   widget = GTK_WIDGET (menu_item);
1615
1616   /* store new path */
1617   g_free (menu_item->accel_path);
1618   menu_item->accel_path = g_strdup (accel_path);
1619
1620   /* forget accelerators associated with old path */
1621   gtk_widget_set_accel_path (widget, NULL, NULL);
1622
1623   /* install accelerators associated with new path */
1624   if (widget->parent && GTK_IS_MENU (widget->parent))
1625     {
1626       GtkMenu *menu = GTK_MENU (widget->parent);
1627
1628       if (menu->accel_group)
1629         _gtk_menu_item_refresh_accel_path (GTK_MENU_ITEM (widget),
1630                                            NULL,
1631                                            menu->accel_group,
1632                                            FALSE);
1633     }
1634 }
1635
1636 static void
1637 gtk_menu_item_forall (GtkContainer *container,
1638                       gboolean      include_internals,
1639                       GtkCallback   callback,
1640                       gpointer      callback_data)
1641 {
1642   GtkBin *bin;
1643
1644   g_return_if_fail (GTK_IS_MENU_ITEM (container));
1645   g_return_if_fail (callback != NULL);
1646
1647   bin = GTK_BIN (container);
1648
1649   if (bin->child)
1650     callback (bin->child, callback_data);
1651 }
1652
1653 gboolean
1654 _gtk_menu_item_is_selectable (GtkWidget *menu_item)
1655 {
1656   if ((!GTK_BIN (menu_item)->child &&
1657        G_OBJECT_TYPE (menu_item) == GTK_TYPE_MENU_ITEM) ||
1658       GTK_IS_SEPARATOR_MENU_ITEM (menu_item) ||
1659       !GTK_WIDGET_IS_SENSITIVE (menu_item) ||
1660       !GTK_WIDGET_VISIBLE (menu_item))
1661     return FALSE;
1662
1663   return TRUE;
1664 }
1665
1666 #define __GTK_MENU_ITEM_C__
1667 #include "gtkaliasdef.c"