Pileus Git - ~andy/gtk/blob - gtk/gtkmenubar.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 /**
  28  * SECTION:gtkmenubar
  29  * @Title: GtkMenuBar
  30  * @Short_description: A subclass of GtkMenuShell which holds GtkMenuItem widgets
  31  * @See_also: #GtkMenuShell, #GtkMenu, #GtkMenuItem
  32  *
  33  * The #GtkMenuBar is a subclass of #GtkMenuShell which contains one or
  34  * more #GtkMenuItems. The result is a standard menu bar which can hold
  35  * many menu items.
  36  */
  37
  38 #include "config.h"
  39
  40 #include "gtkmenubar.h"
  41
  42 #include "gtkbindings.h"
  43 #include "gtkmain.h"
  44 #include "gtkmarshalers.h"
  45 #include "gtkmenuitemprivate.h"
  46 #include "gtkmenuprivate.h"
  47 #include "gtkmenushellprivate.h"
  48 #include "gtksettings.h"
  49 #include "gtksizerequest.h"
  50 #include "gtkwindow.h"
  51 #include "gtkintl.h"
  52 #include "gtkprivate.h"
  53 #include "gtktypebuiltins.h"
  54
  55 #define BORDER_SPACING  0
  56 #define DEFAULT_IPADDING 1
  57
  58 /* Properties */
  59 enum {
  60   PROP_0,
  61   PROP_PACK_DIRECTION,
  62   PROP_CHILD_PACK_DIRECTION
  63 };
  64
  65 struct _GtkMenuBarPrivate
  66 {
  67   GtkPackDirection pack_direction;
  68   GtkPackDirection child_pack_direction;
  69 };
  70
  71
  72 static void gtk_menu_bar_set_property      (GObject             *object,
  73                                             guint                prop_id,
  74                                             const GValue        *value,
  75                                             GParamSpec          *pspec);
  76 static void gtk_menu_bar_get_property      (GObject             *object,
  77                                             guint                prop_id,
  78                                             GValue              *value,
  79                                             GParamSpec          *pspec);
  80 static void gtk_menu_bar_get_preferred_width (GtkWidget     *widget,
  81                                               gint          *minimum,
  82                                               gint          *natural);
  83 static void gtk_menu_bar_get_preferred_height (GtkWidget    *widget,
  84                                                gint         *minimum,
  85                                                gint         *natural);
  86 static void gtk_menu_bar_size_allocate     (GtkWidget       *widget,
  87                                             GtkAllocation   *allocation);
  88 static gint gtk_menu_bar_draw              (GtkWidget       *widget,
  89                                             cairo_t         *cr);
  90 static void gtk_menu_bar_hierarchy_changed (GtkWidget       *widget,
  91                                             GtkWidget       *old_toplevel);
  92 static gint gtk_menu_bar_get_popup_delay   (GtkMenuShell    *menu_shell);
  93 static void gtk_menu_bar_move_current      (GtkMenuShell     *menu_shell,
  94                                             GtkMenuDirectionType direction);
  95
  96 static GtkShadowType get_shadow_type   (GtkMenuBar      *menubar);
  97
  98 G_DEFINE_TYPE (GtkMenuBar, gtk_menu_bar, GTK_TYPE_MENU_SHELL)
  99
 100 static void
 101 gtk_menu_bar_class_init (GtkMenuBarClass *class)
 102 {
 103   GObjectClass *gobject_class;
 104   GtkWidgetClass *widget_class;
 105   GtkMenuShellClass *menu_shell_class;
 106
 107   GtkBindingSet *binding_set;
 108
 109   gobject_class = (GObjectClass*) class;
 110   widget_class = (GtkWidgetClass*) class;
 111   menu_shell_class = (GtkMenuShellClass*) class;
 112
 113   gobject_class->get_property = gtk_menu_bar_get_property;
 114   gobject_class->set_property = gtk_menu_bar_set_property;
 115
 116   widget_class->get_preferred_width = gtk_menu_bar_get_preferred_width;
 117   widget_class->get_preferred_height = gtk_menu_bar_get_preferred_height;
 118   widget_class->size_allocate = gtk_menu_bar_size_allocate;
 119   widget_class->draw = gtk_menu_bar_draw;
 120   widget_class->hierarchy_changed = gtk_menu_bar_hierarchy_changed;
 121
 122   menu_shell_class->submenu_placement = GTK_TOP_BOTTOM;
 123   menu_shell_class->get_popup_delay = gtk_menu_bar_get_popup_delay;
 124   menu_shell_class->move_current = gtk_menu_bar_move_current;
 125
 126   binding_set = gtk_binding_set_by_class (class);
 127   gtk_binding_entry_add_signal (binding_set,
 128                                 GDK_KEY_Left, 0,
 129                                 "move-current", 1,
 130                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 131                                 GTK_MENU_DIR_PREV);
 132   gtk_binding_entry_add_signal (binding_set,
 133                                 GDK_KEY_KP_Left, 0,
 134                                 "move-current", 1,
 135                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 136                                 GTK_MENU_DIR_PREV);
 137   gtk_binding_entry_add_signal (binding_set,
 138                                 GDK_KEY_Right, 0,
 139                                 "move-current", 1,
 140                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 141                                 GTK_MENU_DIR_NEXT);
 142   gtk_binding_entry_add_signal (binding_set,
 143                                 GDK_KEY_KP_Right, 0,
 144                                 "move-current", 1,
 145                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 146                                 GTK_MENU_DIR_NEXT);
 147   gtk_binding_entry_add_signal (binding_set,
 148                                 GDK_KEY_Up, 0,
 149                                 "move-current", 1,
 150                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 151                                 GTK_MENU_DIR_PARENT);
 152   gtk_binding_entry_add_signal (binding_set,
 153                                 GDK_KEY_KP_Up, 0,
 154                                 "move-current", 1,
 155                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 156                                 GTK_MENU_DIR_PARENT);
 157   gtk_binding_entry_add_signal (binding_set,
 158                                 GDK_KEY_Down, 0,
 159                                 "move-current", 1,
 160                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 161                                 GTK_MENU_DIR_CHILD);
 162   gtk_binding_entry_add_signal (binding_set,
 163                                 GDK_KEY_KP_Down, 0,
 164                                 "move-current", 1,
 165                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 166                                 GTK_MENU_DIR_CHILD);
 167
 168   /**
 169    * GtkMenuBar:pack-direction:
 170    *
 171    * The pack direction of the menubar. It determines how
 172    * menuitems are arranged in the menubar.
 173    *
 174    * Since: 2.8
 175    */
 176   g_object_class_install_property (gobject_class,
 177                                    PROP_PACK_DIRECTION,
 178                                    g_param_spec_enum ("pack-direction",
 179                                                       P_("Pack direction"),
 180                                                       P_("The pack direction of the menubar"),
 181                                                       GTK_TYPE_PACK_DIRECTION,
 182                                                       GTK_PACK_DIRECTION_LTR,
 183                                                       GTK_PARAM_READWRITE));
 184
 185   /**
 186    * GtkMenuBar:child-pack-direction:
 187    *
 188    * The child pack direction of the menubar. It determines how
 189    * the widgets contained in child menuitems are arranged.
 190    *
 191    * Since: 2.8
 192    */
 193   g_object_class_install_property (gobject_class,
 194                                    PROP_CHILD_PACK_DIRECTION,
 195                                    g_param_spec_enum ("child-pack-direction",
 196                                                       P_("Child Pack direction"),
 197                                                       P_("The child pack direction of the menubar"),
 198                                                       GTK_TYPE_PACK_DIRECTION,
 199                                                       GTK_PACK_DIRECTION_LTR,
 200                                                       GTK_PARAM_READWRITE));
 201
 202
 203   gtk_widget_class_install_style_property (widget_class,
 204                                            g_param_spec_enum ("shadow-type",
 205                                                               P_("Shadow type"),
 206                                                               P_("Style of bevel around the menubar"),
 207                                                               GTK_TYPE_SHADOW_TYPE,
 208                                                               GTK_SHADOW_OUT,
 209                                                               GTK_PARAM_READABLE));
 210
 211   gtk_widget_class_install_style_property (widget_class,
 212                                            g_param_spec_int ("internal-padding",
 213                                                              P_("Internal padding"),
 214                                                              P_("Amount of border space between the menubar shadow and the menu items"),
 215                                                              0,
 216                                                              G_MAXINT,
 217                                                              DEFAULT_IPADDING,
 218                                                              GTK_PARAM_READABLE));
 219
 220   g_type_class_add_private (gobject_class, sizeof (GtkMenuBarPrivate));
 221 }
 222
 223 static void
 224 gtk_menu_bar_init (GtkMenuBar *menu_bar)
 225 {
 226   GtkStyleContext *context;
 227
 228   menu_bar->priv = G_TYPE_INSTANCE_GET_PRIVATE (menu_bar,
 229                                                 GTK_TYPE_MENU_BAR,
 230                                                 GtkMenuBarPrivate);
 231
 232   context = gtk_widget_get_style_context (GTK_WIDGET (menu_bar));
 233   gtk_style_context_add_class (context, GTK_STYLE_CLASS_MENUBAR);
 234 }
 235
 236 /**
 237  * gtk_menu_bar_new:
 238  *
 239  * Creates a new #GtkMenuBar
 240  *
 241  * Returns: the new menu bar, as a #GtkWidget
 242  */
 243 GtkWidget*
 244 gtk_menu_bar_new (void)
 245 {
 246   return g_object_new (GTK_TYPE_MENU_BAR, NULL);
 247 }
 248
 249 static void
 250 gtk_menu_bar_set_property (GObject      *object,
 251                            guint         prop_id,
 252                            const GValue *value,
 253                            GParamSpec   *pspec)
 254 {
 255   GtkMenuBar *menubar = GTK_MENU_BAR (object);
 256
 257   switch (prop_id)
 258     {
 259     case PROP_PACK_DIRECTION:
 260       gtk_menu_bar_set_pack_direction (menubar, g_value_get_enum (value));
 261       break;
 262     case PROP_CHILD_PACK_DIRECTION:
 263       gtk_menu_bar_set_child_pack_direction (menubar, g_value_get_enum (value));
 264       break;
 265     default:
 266       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 267       break;
 268     }
 269 }
 270
 271 static void
 272 gtk_menu_bar_get_property (GObject    *object,
 273                            guint       prop_id,
 274                            GValue     *value,
 275                            GParamSpec *pspec)
 276 {
 277   GtkMenuBar *menubar = GTK_MENU_BAR (object);
 278
 279   switch (prop_id)
 280     {
 281     case PROP_PACK_DIRECTION:
 282       g_value_set_enum (value, gtk_menu_bar_get_pack_direction (menubar));
 283       break;
 284     case PROP_CHILD_PACK_DIRECTION:
 285       g_value_set_enum (value, gtk_menu_bar_get_child_pack_direction (menubar));
 286       break;
 287     default:
 288       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 289       break;
 290     }
 291 }
 292
 293 static void
 294 get_preferred_size_for_size (GtkWidget      *widget,
 295                              GtkOrientation  orientation,
 296                              gint            size,
 297                              gint           *minimum,
 298                              gint           *natural)
 299 {
 300   if (orientation == GTK_ORIENTATION_HORIZONTAL)
 301     if (size < 0)
 302       gtk_widget_get_preferred_width (widget, minimum, natural);
 303     else
 304       gtk_widget_get_preferred_width_for_height (widget, size, minimum, natural);
 305   else
 306     if (size < 0)
 307       gtk_widget_get_preferred_height (widget, minimum, natural);
 308     else
 309       gtk_widget_get_preferred_height_for_width (widget, size, minimum, natural);
 310 }
 311
 312 static void
 313 gtk_menu_bar_size_request (GtkWidget      *widget,
 314                            GtkOrientation  orientation,
 315                            gint           *minimum,
 316                            gint           *natural)
 317 {
 318   GtkMenuBar *menu_bar;
 319   GtkMenuBarPrivate *priv;
 320   GtkMenuShell *menu_shell;
 321   GtkWidget *child;
 322   GList *children;
 323   gint ipadding;
 324   guint border_width;
 325   gboolean use_toggle_size, use_maximize;
 326   gint child_size, size = 0;
 327
 328   menu_bar = GTK_MENU_BAR (widget);
 329   menu_shell = GTK_MENU_SHELL (widget);
 330   priv = menu_bar->priv;
 331
 332   children = menu_shell->priv->children;
 333
 334   if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 335       priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 336     use_toggle_size = (orientation == GTK_ORIENTATION_HORIZONTAL);
 337   else
 338     use_toggle_size = (orientation == GTK_ORIENTATION_VERTICAL);
 339
 340   if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
 341       priv->pack_direction == GTK_PACK_DIRECTION_RTL)
 342     use_maximize = (orientation == GTK_ORIENTATION_VERTICAL);
 343   else
 344     use_maximize = (orientation == GTK_ORIENTATION_HORIZONTAL);
 345
 346   while (children)
 347     {
 348       child = children->data;
 349       children = children->next;
 350
 351       if (gtk_widget_get_visible (child))
 352         {
 353           get_preferred_size_for_size (child, orientation, -1, &child_size, NULL);
 354
 355           if (use_toggle_size)
 356             {
 357               gint toggle_size;
 358
 359               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 360                                                  &toggle_size);
 361
 362               child_size += toggle_size;
 363             }
 364
 365           if (use_maximize)
 366             size = MAX (size, child_size);
 367           else
 368             size += child_size;
 369         }
 370     }
 371
 372   gtk_widget_style_get (widget, "internal-padding", &ipadding, NULL);
 373
 374   border_width = gtk_container_get_border_width (GTK_CONTAINER (menu_bar));
 375   size += (border_width + ipadding + BORDER_SPACING) * 2;
 376
 377   if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
 378     {
 379       GtkStyleContext *context;
 380       GtkBorder *border;
 381
 382       context = gtk_widget_get_style_context (widget);
 383
 384       gtk_style_context_get (context, 0,
 385                              "border-width", &border,
 386                              NULL);
 387
 388       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 389         size += border->left + border->right;
 390       else
 391         size += border->top + border->bottom;
 392       gtk_border_free (border);
 393     }
 394
 395   *minimum = *natural = size;
 396 }
 397
 398 static void
 399 gtk_menu_bar_get_preferred_width (GtkWidget *widget,
 400                                   gint      *minimum,
 401                                   gint      *natural)
 402 {
 403   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_HORIZONTAL, minimum, natural);
 404 }
 405
 406 static void
 407 gtk_menu_bar_get_preferred_height (GtkWidget *widget,
 408                                    gint      *minimum,
 409                                    gint      *natural)
 410 {
 411   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_VERTICAL, minimum, natural);
 412 }
 413
 414 static void
 415 gtk_menu_bar_size_allocate (GtkWidget     *widget,
 416                             GtkAllocation *allocation)
 417 {
 418   GtkMenuBar *menu_bar;
 419   GtkMenuShell *menu_shell;
 420   GtkMenuBarPrivate *priv;
 421   GtkWidget *child;
 422   GList *children;
 423   GtkAllocation child_allocation;
 424   GtkRequisition child_requisition;
 425   guint offset;
 426   GtkTextDirection direction;
 427   gint ltr_x, ltr_y;
 428   gint ipadding;
 429   guint border_width;
 430
 431   g_return_if_fail (GTK_IS_MENU_BAR (widget));
 432   g_return_if_fail (allocation != NULL);
 433
 434   menu_bar = GTK_MENU_BAR (widget);
 435   menu_shell = GTK_MENU_SHELL (widget);
 436   priv = menu_bar->priv;
 437
 438   direction = gtk_widget_get_direction (widget);
 439
 440   gtk_widget_set_allocation (widget, allocation);
 441
 442   if (gtk_widget_get_realized (widget))
 443     gdk_window_move_resize (gtk_widget_get_window (widget),
 444                             allocation->x, allocation->y,
 445                             allocation->width, allocation->height);
 446
 447   gtk_widget_style_get (widget, "internal-padding", &ipadding, NULL);
 448
 449   if (menu_shell->priv->children)
 450     {
 451       border_width = gtk_container_get_border_width (GTK_CONTAINER (menu_bar));
 452       child_allocation.x = (border_width +
 453                             ipadding +
 454                             BORDER_SPACING);
 455       child_allocation.y = (border_width +
 456                             BORDER_SPACING);
 457
 458       if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
 459         {
 460           GtkStyleContext *context;
 461           GtkBorder *border;
 462
 463           context = gtk_widget_get_style_context (widget);
 464           gtk_style_context_get (context, 0,
 465                                  "border-width", &border,
 466                                  NULL);
 467
 468           child_allocation.x += border->left;
 469           child_allocation.y += border->top;
 470
 471           gtk_border_free (border);
 472         }
 473
 474       if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
 475           priv->pack_direction == GTK_PACK_DIRECTION_RTL)
 476         {
 477           child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
 478
 479           offset = child_allocation.x;  /* Window edge to menubar start */
 480           ltr_x = child_allocation.x;
 481
 482           children = menu_shell->priv->children;
 483           while (children)
 484             {
 485               gint toggle_size;
 486
 487               child = children->data;
 488               children = children->next;
 489
 490               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 491                                                  &toggle_size);
 492               gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 493
 494               if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 495                   priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 496                 child_requisition.width += toggle_size;
 497               else
 498                 child_requisition.height += toggle_size;
 499
 500               /* Support for the right justified help menu */
 501               if (children == NULL &&
 502                   GTK_IS_MENU_ITEM (child) &&
 503                   GTK_MENU_ITEM (child)->priv->right_justify)
 504                 {
 505                   ltr_x = allocation->width -
 506                     child_requisition.width - offset;
 507                 }
 508               if (gtk_widget_get_visible (child))
 509                 {
 510                   if ((direction == GTK_TEXT_DIR_LTR) == (priv->pack_direction == GTK_PACK_DIRECTION_LTR))
 511                     child_allocation.x = ltr_x;
 512                   else
 513                     child_allocation.x = allocation->width -
 514                       child_requisition.width - ltr_x;
 515
 516                   child_allocation.width = child_requisition.width;
 517
 518                   gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child),
 519                                                       toggle_size);
 520                   gtk_widget_size_allocate (child, &child_allocation);
 521
 522                   ltr_x += child_allocation.width;
 523                 }
 524             }
 525         }
 526       else
 527         {
 528           child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2);
 529
 530           offset = child_allocation.y;  /* Window edge to menubar start */
 531           ltr_y = child_allocation.y;
 532
 533           children = menu_shell->priv->children;
 534           while (children)
 535             {
 536               gint toggle_size;
 537
 538               child = children->data;
 539               children = children->next;
 540
 541               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 542                                                  &toggle_size);
 543               gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 544
 545               if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 546                   priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 547                 child_requisition.width += toggle_size;
 548               else
 549                 child_requisition.height += toggle_size;
 550
 551               /* Support for the right justified help menu */
 552               if (children == NULL &&
 553                   GTK_IS_MENU_ITEM (child) &&
 554                   GTK_MENU_ITEM (child)->priv->right_justify)
 555                 {
 556                   ltr_y = allocation->height -
 557                     child_requisition.height - offset;
 558                 }
 559               if (gtk_widget_get_visible (child))
 560                 {
 561                   if ((direction == GTK_TEXT_DIR_LTR) ==
 562                       (priv->pack_direction == GTK_PACK_DIRECTION_TTB))
 563                     child_allocation.y = ltr_y;
 564                   else
 565                     child_allocation.y = allocation->height -
 566                       child_requisition.height - ltr_y;
 567                   child_allocation.height = child_requisition.height;
 568
 569                   gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child),
 570                                                       toggle_size);
 571                   gtk_widget_size_allocate (child, &child_allocation);
 572
 573                   ltr_y += child_allocation.height;
 574                 }
 575             }
 576         }
 577     }
 578 }
 579
 580 static gint
 581 gtk_menu_bar_draw (GtkWidget *widget,
 582                    cairo_t   *cr)
 583 {
 584   GtkStyleContext *context;
 585   GtkStateFlags state;
 586   int border;
 587
 588   border = gtk_container_get_border_width (GTK_CONTAINER (widget));
 589   context = gtk_widget_get_style_context (widget);
 590
 591   state = gtk_widget_get_state_flags (widget);
 592   gtk_style_context_set_state (context, state);
 593
 594   if (get_shadow_type (GTK_MENU_BAR (widget)) != GTK_SHADOW_NONE)
 595     gtk_render_background (context, cr,
 596                            border, border,
 597                            gtk_widget_get_allocated_width (widget) - border * 2,
 598                            gtk_widget_get_allocated_height (widget) - border * 2);
 599
 600   gtk_render_frame (context, cr,
 601                     border, border,
 602                     gtk_widget_get_allocated_width (widget) - border * 2,
 603                     gtk_widget_get_allocated_height (widget) - border * 2);
 604
 605   GTK_WIDGET_CLASS (gtk_menu_bar_parent_class)->draw (widget, cr);
 606
 607   return FALSE;
 608 }
 609
 610 static GList *
 611 get_menu_bars (GtkWindow *window)
 612 {
 613   return g_object_get_data (G_OBJECT (window), "gtk-menu-bar-list");
 614 }
 615
 616 static GList *
 617 get_viewable_menu_bars (GtkWindow *window)
 618 {
 619   GList *menu_bars;
 620   GList *viewable_menu_bars = NULL;
 621
 622   for (menu_bars = get_menu_bars (window);
 623        menu_bars;
 624        menu_bars = menu_bars->next)
 625     {
 626       GtkWidget *widget = menu_bars->data;
 627       gboolean viewable = TRUE;
 628
 629       while (widget)
 630         {
 631           if (!gtk_widget_get_mapped (widget))
 632             viewable = FALSE;
 633
 634           widget = gtk_widget_get_parent (widget);
 635         }
 636
 637       if (viewable)
 638         viewable_menu_bars = g_list_prepend (viewable_menu_bars, menu_bars->data);
 639     }
 640
 641   return g_list_reverse (viewable_menu_bars);
 642 }
 643
 644 static void
 645 set_menu_bars (GtkWindow *window,
 646                GList     *menubars)
 647 {
 648   g_object_set_data (G_OBJECT (window), I_("gtk-menu-bar-list"), menubars);
 649 }
 650
 651 static gboolean
 652 window_key_press_handler (GtkWidget   *widget,
 653                           GdkEventKey *event,
 654                           gpointer     data)
 655 {
 656   gchar *accel = NULL;
 657   gboolean retval = FALSE;
 658
 659   g_object_get (gtk_widget_get_settings (widget),
 660                 "gtk-menu-bar-accel", &accel,
 661                 NULL);
 662
 663   if (accel && *accel)
 664     {
 665       guint keyval = 0;
 666       GdkModifierType mods = 0;
 667
 668       gtk_accelerator_parse (accel, &keyval, &mods);
 669
 670       if (keyval == 0)
 671         g_warning ("Failed to parse menu bar accelerator '%s'\n", accel);
 672
 673       /* FIXME this is wrong, needs to be in the global accel resolution
 674        * thing, to properly consider i18n etc., but that probably requires
 675        * AccelGroup changes etc.
 676        */
 677       if (event->keyval == keyval &&
 678           ((event->state & gtk_accelerator_get_default_mod_mask ()) ==
 679            (mods & gtk_accelerator_get_default_mod_mask ())))
 680         {
 681           GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (widget));
 682           GList *menubars;
 683
 684           menubars = _gtk_container_focus_sort (GTK_CONTAINER (widget), tmp_menubars,
 685                                                 GTK_DIR_TAB_FORWARD, NULL);
 686           g_list_free (tmp_menubars);
 687
 688           if (menubars)
 689             {
 690               GtkMenuShell *menu_shell = GTK_MENU_SHELL (menubars->data);
 691
 692               _gtk_menu_shell_set_keyboard_mode (menu_shell, TRUE);
 693               gtk_menu_shell_select_first (menu_shell, FALSE);
 694
 695               g_list_free (menubars);
 696
 697               retval = TRUE;
 698             }
 699         }
 700     }
 701
 702   g_free (accel);
 703
 704   return retval;
 705 }
 706
 707 static void
 708 add_to_window (GtkWindow  *window,
 709                GtkMenuBar *menubar)
 710 {
 711   GList *menubars = get_menu_bars (window);
 712
 713   if (!menubars)
 714     {
 715       g_signal_connect (window,
 716                         "key-press-event",
 717                         G_CALLBACK (window_key_press_handler),
 718                         NULL);
 719     }
 720
 721   set_menu_bars (window, g_list_prepend (menubars, menubar));
 722 }
 723
 724 static void
 725 remove_from_window (GtkWindow  *window,
 726                     GtkMenuBar *menubar)
 727 {
 728   GList *menubars = get_menu_bars (window);
 729
 730   menubars = g_list_remove (menubars, menubar);
 731
 732   if (!menubars)
 733     {
 734       g_signal_handlers_disconnect_by_func (window,
 735                                             window_key_press_handler,
 736                                             NULL);
 737     }
 738
 739   set_menu_bars (window, menubars);
 740 }
 741
 742 static void
 743 gtk_menu_bar_hierarchy_changed (GtkWidget *widget,
 744                                 GtkWidget *old_toplevel)
 745 {
 746   GtkWidget *toplevel;
 747   GtkMenuBar *menubar;
 748
 749   menubar = GTK_MENU_BAR (widget);
 750
 751   toplevel = gtk_widget_get_toplevel (widget);
 752
 753   if (old_toplevel)
 754     remove_from_window (GTK_WINDOW (old_toplevel), menubar);
 755
 756   if (gtk_widget_is_toplevel (toplevel))
 757     add_to_window (GTK_WINDOW (toplevel), menubar);
 758 }
 759
 760 /**
 761  * _gtk_menu_bar_cycle_focus:
 762  * @menubar: a #GtkMenuBar
 763  * @dir: direction in which to cycle the focus
 764  *
 765  * Move the focus between menubars in the toplevel.
 766  **/
 767 void
 768 _gtk_menu_bar_cycle_focus (GtkMenuBar       *menubar,
 769                            GtkDirectionType  dir)
 770 {
 771   GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (menubar));
 772   GtkMenuItem *to_activate = NULL;
 773
 774   if (gtk_widget_is_toplevel (toplevel))
 775     {
 776       GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (toplevel));
 777       GList *menubars;
 778       GList *current;
 779
 780       menubars = _gtk_container_focus_sort (GTK_CONTAINER (toplevel), tmp_menubars,
 781                                             dir, GTK_WIDGET (menubar));
 782       g_list_free (tmp_menubars);
 783
 784       if (menubars)
 785         {
 786           current = g_list_find (menubars, menubar);
 787
 788           if (current && current->next)
 789             {
 790               GtkMenuShell *new_menushell = GTK_MENU_SHELL (current->next->data);
 791               if (new_menushell->priv->children)
 792                 to_activate = new_menushell->priv->children->data;
 793             }
 794         }
 795
 796       g_list_free (menubars);
 797     }
 798
 799   gtk_menu_shell_cancel (GTK_MENU_SHELL (menubar));
 800
 801   if (to_activate)
 802     g_signal_emit_by_name (to_activate, "activate_item");
 803 }
 804
 805 static GtkShadowType
 806 get_shadow_type (GtkMenuBar *menubar)
 807 {
 808   GtkShadowType shadow_type = GTK_SHADOW_OUT;
 809
 810   gtk_widget_style_get (GTK_WIDGET (menubar),
 811                         "shadow-type", &shadow_type,
 812                         NULL);
 813
 814   return shadow_type;
 815 }
 816
 817 static gint
 818 gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell)
 819 {
 820   gint popup_delay;
 821
 822   g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
 823                 "gtk-menu-bar-popup-delay", &popup_delay,
 824                 NULL);
 825
 826   return popup_delay;
 827 }
 828
 829 static void
 830 gtk_menu_bar_move_current (GtkMenuShell         *menu_shell,
 831                            GtkMenuDirectionType  direction)
 832 {
 833   GtkMenuBar *menubar = GTK_MENU_BAR (menu_shell);
 834   GtkTextDirection text_dir;
 835   GtkPackDirection pack_dir;
 836
 837   text_dir = gtk_widget_get_direction (GTK_WIDGET (menubar));
 838   pack_dir = gtk_menu_bar_get_pack_direction (menubar);
 839
 840   if (pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL)
 841      {
 842       if ((text_dir == GTK_TEXT_DIR_RTL) == (pack_dir == GTK_PACK_DIRECTION_LTR))
 843         {
 844           switch (direction)
 845             {
 846             case GTK_MENU_DIR_PREV:
 847               direction = GTK_MENU_DIR_NEXT;
 848               break;
 849             case GTK_MENU_DIR_NEXT:
 850               direction = GTK_MENU_DIR_PREV;
 851               break;
 852             default: ;
 853             }
 854         }
 855     }
 856   else
 857     {
 858       switch (direction)
 859         {
 860         case GTK_MENU_DIR_PARENT:
 861           if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
 862             direction = GTK_MENU_DIR_PREV;
 863           else
 864             direction = GTK_MENU_DIR_NEXT;
 865           break;
 866         case GTK_MENU_DIR_CHILD:
 867           if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
 868             direction = GTK_MENU_DIR_NEXT;
 869           else
 870             direction = GTK_MENU_DIR_PREV;
 871           break;
 872         case GTK_MENU_DIR_PREV:
 873           if (text_dir == GTK_TEXT_DIR_RTL)
 874             direction = GTK_MENU_DIR_CHILD;
 875           else
 876             direction = GTK_MENU_DIR_PARENT;
 877           break;
 878         case GTK_MENU_DIR_NEXT:
 879           if (text_dir == GTK_TEXT_DIR_RTL)
 880             direction = GTK_MENU_DIR_PARENT;
 881           else
 882             direction = GTK_MENU_DIR_CHILD;
 883           break;
 884         default: ;
 885         }
 886     }
 887
 888   GTK_MENU_SHELL_CLASS (gtk_menu_bar_parent_class)->move_current (menu_shell, direction);
 889 }
 890
 891 /**
 892  * gtk_menu_bar_get_pack_direction:
 893  * @menubar: a #GtkMenuBar
 894  *
 895  * Retrieves the current pack direction of the menubar.
 896  * See gtk_menu_bar_set_pack_direction().
 897  *
 898  * Return value: the pack direction
 899  *
 900  * Since: 2.8
 901  */
 902 GtkPackDirection
 903 gtk_menu_bar_get_pack_direction (GtkMenuBar *menubar)
 904 {
 905   g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
 906                         GTK_PACK_DIRECTION_LTR);
 907
 908   return menubar->priv->pack_direction;
 909 }
 910
 911 /**
 912  * gtk_menu_bar_set_pack_direction:
 913  * @menubar: a #GtkMenuBar
 914  * @pack_dir: a new #GtkPackDirection
 915  *
 916  * Sets how items should be packed inside a menubar.
 917  *
 918  * Since: 2.8
 919  */
 920 void
 921 gtk_menu_bar_set_pack_direction (GtkMenuBar       *menubar,
 922                                  GtkPackDirection  pack_dir)
 923 {
 924   GtkMenuBarPrivate *priv;
 925   GList *l;
 926
 927   g_return_if_fail (GTK_IS_MENU_BAR (menubar));
 928
 929   priv = menubar->priv;
 930
 931   if (priv->pack_direction != pack_dir)
 932     {
 933       priv->pack_direction = pack_dir;
 934
 935       gtk_widget_queue_resize (GTK_WIDGET (menubar));
 936
 937       for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
 938         gtk_widget_queue_resize (GTK_WIDGET (l->data));
 939
 940       g_object_notify (G_OBJECT (menubar), "pack-direction");
 941     }
 942 }
 943
 944 /**
 945  * gtk_menu_bar_get_child_pack_direction:
 946  * @menubar: a #GtkMenuBar
 947  *
 948  * Retrieves the current child pack direction of the menubar.
 949  * See gtk_menu_bar_set_child_pack_direction().
 950  *
 951  * Return value: the child pack direction
 952  *
 953  * Since: 2.8
 954  */
 955 GtkPackDirection
 956 gtk_menu_bar_get_child_pack_direction (GtkMenuBar *menubar)
 957 {
 958   g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
 959                         GTK_PACK_DIRECTION_LTR);
 960
 961   return menubar->priv->child_pack_direction;
 962 }
 963
 964 /**
 965  * gtk_menu_bar_set_child_pack_direction:
 966  * @menubar: a #GtkMenuBar
 967  * @child_pack_dir: a new #GtkPackDirection
 968  *
 969  * Sets how widgets should be packed inside the children of a menubar.
 970  *
 971  * Since: 2.8
 972  */
 973 void
 974 gtk_menu_bar_set_child_pack_direction (GtkMenuBar       *menubar,
 975                                        GtkPackDirection  child_pack_dir)
 976 {
 977   GtkMenuBarPrivate *priv;
 978   GList *l;
 979
 980   g_return_if_fail (GTK_IS_MENU_BAR (menubar));
 981
 982   priv = menubar->priv;
 983
 984   if (priv->child_pack_direction != child_pack_dir)
 985     {
 986       priv->child_pack_direction = child_pack_dir;
 987
 988       gtk_widget_queue_resize (GTK_WIDGET (menubar));
 989
 990       for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
 991         gtk_widget_queue_resize (GTK_WIDGET (l->data));
 992
 993       g_object_notify (G_OBJECT (menubar), "child-pack-direction");
 994     }
 995 }