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 gtk_menu_bar_size_request (GtkWidget      *widget,
 295                            GtkOrientation  orientation,
 296                            gint           *minimum,
 297                            gint           *natural)
 298 {
 299   GtkMenuBar *menu_bar;
 300   GtkMenuBarPrivate *priv;
 301   GtkMenuShell *menu_shell;
 302   GtkWidget *child;
 303   GList *children;
 304   GtkRequisition child_requisition;
 305   GtkRequisition requisition;
 306   gint ipadding;
 307   guint border_width;
 308   gboolean use_toggle_size;
 309
 310   requisition.width = 0;
 311   requisition.height = 0;
 312
 313   menu_bar = GTK_MENU_BAR (widget);
 314   menu_shell = GTK_MENU_SHELL (widget);
 315   priv = menu_bar->priv;
 316
 317   children = menu_shell->priv->children;
 318
 319   if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 320       priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 321     use_toggle_size = (orientation == GTK_ORIENTATION_HORIZONTAL);
 322   else
 323     use_toggle_size = (orientation == GTK_ORIENTATION_VERTICAL);
 324
 325   while (children)
 326     {
 327       child = children->data;
 328       children = children->next;
 329
 330       if (gtk_widget_get_visible (child))
 331         {
 332           gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 333
 334           if (use_toggle_size)
 335             {
 336               gint toggle_size;
 337
 338               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 339                                                  &toggle_size);
 340
 341               child_requisition.width += toggle_size;
 342               child_requisition.height += toggle_size;
 343             }
 344
 345           if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
 346               priv->pack_direction == GTK_PACK_DIRECTION_RTL)
 347             {
 348               requisition.width += child_requisition.width;
 349               requisition.height = MAX (requisition.height, child_requisition.height);
 350             }
 351           else
 352             {
 353               requisition.width = MAX (requisition.width, child_requisition.width);
 354               requisition.height += child_requisition.height;
 355             }
 356         }
 357     }
 358
 359   gtk_widget_style_get (widget, "internal-padding", &ipadding, NULL);
 360
 361   border_width = gtk_container_get_border_width (GTK_CONTAINER (menu_bar));
 362   requisition.width += (border_width +
 363                         ipadding +
 364                         BORDER_SPACING) * 2;
 365   requisition.height += (border_width +
 366                          ipadding +
 367                          BORDER_SPACING) * 2;
 368
 369   if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
 370     {
 371       GtkStyleContext *context;
 372       GtkBorder *border;
 373
 374       context = gtk_widget_get_style_context (widget);
 375
 376       gtk_style_context_get (context, 0,
 377                              "border-width", &border,
 378                              NULL);
 379
 380       requisition.width += border->left + border->right;
 381       requisition.height += border->top + border->bottom;
 382       gtk_border_free (border);
 383     }
 384
 385   if (orientation == GTK_ORIENTATION_HORIZONTAL)
 386     *minimum = *natural = requisition.width;
 387   else
 388     *minimum = *natural = requisition.height;
 389 }
 390
 391 static void
 392 gtk_menu_bar_get_preferred_width (GtkWidget *widget,
 393                                   gint      *minimum,
 394                                   gint      *natural)
 395 {
 396   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_HORIZONTAL, minimum, natural);
 397 }
 398
 399 static void
 400 gtk_menu_bar_get_preferred_height (GtkWidget *widget,
 401                                    gint      *minimum,
 402                                    gint      *natural)
 403 {
 404   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_VERTICAL, minimum, natural);
 405 }
 406
 407 static void
 408 gtk_menu_bar_size_allocate (GtkWidget     *widget,
 409                             GtkAllocation *allocation)
 410 {
 411   GtkMenuBar *menu_bar;
 412   GtkMenuShell *menu_shell;
 413   GtkMenuBarPrivate *priv;
 414   GtkWidget *child;
 415   GList *children;
 416   GtkAllocation child_allocation;
 417   GtkRequisition child_requisition;
 418   guint offset;
 419   GtkTextDirection direction;
 420   gint ltr_x, ltr_y;
 421   gint ipadding;
 422   guint border_width;
 423
 424   g_return_if_fail (GTK_IS_MENU_BAR (widget));
 425   g_return_if_fail (allocation != NULL);
 426
 427   menu_bar = GTK_MENU_BAR (widget);
 428   menu_shell = GTK_MENU_SHELL (widget);
 429   priv = menu_bar->priv;
 430
 431   direction = gtk_widget_get_direction (widget);
 432
 433   gtk_widget_set_allocation (widget, allocation);
 434
 435   if (gtk_widget_get_realized (widget))
 436     gdk_window_move_resize (gtk_widget_get_window (widget),
 437                             allocation->x, allocation->y,
 438                             allocation->width, allocation->height);
 439
 440   gtk_widget_style_get (widget, "internal-padding", &ipadding, NULL);
 441
 442   if (menu_shell->priv->children)
 443     {
 444       border_width = gtk_container_get_border_width (GTK_CONTAINER (menu_bar));
 445       child_allocation.x = (border_width +
 446                             ipadding +
 447                             BORDER_SPACING);
 448       child_allocation.y = (border_width +
 449                             BORDER_SPACING);
 450
 451       if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
 452         {
 453           GtkStyleContext *context;
 454           GtkBorder *border;
 455
 456           context = gtk_widget_get_style_context (widget);
 457           gtk_style_context_get (context, 0,
 458                                  "border-width", &border,
 459                                  NULL);
 460
 461           child_allocation.x += border->left;
 462           child_allocation.y += border->top;
 463
 464           gtk_border_free (border);
 465         }
 466
 467       if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
 468           priv->pack_direction == GTK_PACK_DIRECTION_RTL)
 469         {
 470           child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
 471
 472           offset = child_allocation.x;  /* Window edge to menubar start */
 473           ltr_x = child_allocation.x;
 474
 475           children = menu_shell->priv->children;
 476           while (children)
 477             {
 478               gint toggle_size;
 479
 480               child = children->data;
 481               children = children->next;
 482
 483               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 484                                                  &toggle_size);
 485               gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 486
 487               if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 488                   priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 489                 child_requisition.width += toggle_size;
 490               else
 491                 child_requisition.height += toggle_size;
 492
 493               /* Support for the right justified help menu */
 494               if (children == NULL &&
 495                   GTK_IS_MENU_ITEM (child) &&
 496                   GTK_MENU_ITEM (child)->priv->right_justify)
 497                 {
 498                   ltr_x = allocation->width -
 499                     child_requisition.width - offset;
 500                 }
 501               if (gtk_widget_get_visible (child))
 502                 {
 503                   if ((direction == GTK_TEXT_DIR_LTR) == (priv->pack_direction == GTK_PACK_DIRECTION_LTR))
 504                     child_allocation.x = ltr_x;
 505                   else
 506                     child_allocation.x = allocation->width -
 507                       child_requisition.width - ltr_x;
 508
 509                   child_allocation.width = child_requisition.width;
 510
 511                   gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child),
 512                                                       toggle_size);
 513                   gtk_widget_size_allocate (child, &child_allocation);
 514
 515                   ltr_x += child_allocation.width;
 516                 }
 517             }
 518         }
 519       else
 520         {
 521           child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2);
 522
 523           offset = child_allocation.y;  /* Window edge to menubar start */
 524           ltr_y = child_allocation.y;
 525
 526           children = menu_shell->priv->children;
 527           while (children)
 528             {
 529               gint toggle_size;
 530
 531               child = children->data;
 532               children = children->next;
 533
 534               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 535                                                  &toggle_size);
 536               gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 537
 538               if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 539                   priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 540                 child_requisition.width += toggle_size;
 541               else
 542                 child_requisition.height += toggle_size;
 543
 544               /* Support for the right justified help menu */
 545               if (children == NULL &&
 546                   GTK_IS_MENU_ITEM (child) &&
 547                   GTK_MENU_ITEM (child)->priv->right_justify)
 548                 {
 549                   ltr_y = allocation->height -
 550                     child_requisition.height - offset;
 551                 }
 552               if (gtk_widget_get_visible (child))
 553                 {
 554                   if ((direction == GTK_TEXT_DIR_LTR) ==
 555                       (priv->pack_direction == GTK_PACK_DIRECTION_TTB))
 556                     child_allocation.y = ltr_y;
 557                   else
 558                     child_allocation.y = allocation->height -
 559                       child_requisition.height - ltr_y;
 560                   child_allocation.height = child_requisition.height;
 561
 562                   gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child),
 563                                                       toggle_size);
 564                   gtk_widget_size_allocate (child, &child_allocation);
 565
 566                   ltr_y += child_allocation.height;
 567                 }
 568             }
 569         }
 570     }
 571 }
 572
 573 static gint
 574 gtk_menu_bar_draw (GtkWidget *widget,
 575                    cairo_t   *cr)
 576 {
 577   GtkStyleContext *context;
 578   GtkStateFlags state;
 579   int border;
 580
 581   border = gtk_container_get_border_width (GTK_CONTAINER (widget));
 582   context = gtk_widget_get_style_context (widget);
 583
 584   state = gtk_widget_get_state_flags (widget);
 585   gtk_style_context_set_state (context, state);
 586
 587   if (get_shadow_type (GTK_MENU_BAR (widget)) != GTK_SHADOW_NONE)
 588     gtk_render_background (context, cr,
 589                            border, border,
 590                            gtk_widget_get_allocated_width (widget) - border * 2,
 591                            gtk_widget_get_allocated_height (widget) - border * 2);
 592
 593   gtk_render_frame (context, cr,
 594                     border, border,
 595                     gtk_widget_get_allocated_width (widget) - border * 2,
 596                     gtk_widget_get_allocated_height (widget) - border * 2);
 597
 598   GTK_WIDGET_CLASS (gtk_menu_bar_parent_class)->draw (widget, cr);
 599
 600   return FALSE;
 601 }
 602
 603 static GList *
 604 get_menu_bars (GtkWindow *window)
 605 {
 606   return g_object_get_data (G_OBJECT (window), "gtk-menu-bar-list");
 607 }
 608
 609 static GList *
 610 get_viewable_menu_bars (GtkWindow *window)
 611 {
 612   GList *menu_bars;
 613   GList *viewable_menu_bars = NULL;
 614
 615   for (menu_bars = get_menu_bars (window);
 616        menu_bars;
 617        menu_bars = menu_bars->next)
 618     {
 619       GtkWidget *widget = menu_bars->data;
 620       gboolean viewable = TRUE;
 621
 622       while (widget)
 623         {
 624           if (!gtk_widget_get_mapped (widget))
 625             viewable = FALSE;
 626
 627           widget = gtk_widget_get_parent (widget);
 628         }
 629
 630       if (viewable)
 631         viewable_menu_bars = g_list_prepend (viewable_menu_bars, menu_bars->data);
 632     }
 633
 634   return g_list_reverse (viewable_menu_bars);
 635 }
 636
 637 static void
 638 set_menu_bars (GtkWindow *window,
 639                GList     *menubars)
 640 {
 641   g_object_set_data (G_OBJECT (window), I_("gtk-menu-bar-list"), menubars);
 642 }
 643
 644 static gboolean
 645 window_key_press_handler (GtkWidget   *widget,
 646                           GdkEventKey *event,
 647                           gpointer     data)
 648 {
 649   gchar *accel = NULL;
 650   gboolean retval = FALSE;
 651
 652   g_object_get (gtk_widget_get_settings (widget),
 653                 "gtk-menu-bar-accel", &accel,
 654                 NULL);
 655
 656   if (accel && *accel)
 657     {
 658       guint keyval = 0;
 659       GdkModifierType mods = 0;
 660
 661       gtk_accelerator_parse (accel, &keyval, &mods);
 662
 663       if (keyval == 0)
 664         g_warning ("Failed to parse menu bar accelerator '%s'\n", accel);
 665
 666       /* FIXME this is wrong, needs to be in the global accel resolution
 667        * thing, to properly consider i18n etc., but that probably requires
 668        * AccelGroup changes etc.
 669        */
 670       if (event->keyval == keyval &&
 671           ((event->state & gtk_accelerator_get_default_mod_mask ()) ==
 672            (mods & gtk_accelerator_get_default_mod_mask ())))
 673         {
 674           GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (widget));
 675           GList *menubars;
 676
 677           menubars = _gtk_container_focus_sort (GTK_CONTAINER (widget), tmp_menubars,
 678                                                 GTK_DIR_TAB_FORWARD, NULL);
 679           g_list_free (tmp_menubars);
 680
 681           if (menubars)
 682             {
 683               GtkMenuShell *menu_shell = GTK_MENU_SHELL (menubars->data);
 684
 685               _gtk_menu_shell_set_keyboard_mode (menu_shell, TRUE);
 686               gtk_menu_shell_select_first (menu_shell, FALSE);
 687
 688               g_list_free (menubars);
 689
 690               retval = TRUE;
 691             }
 692         }
 693     }
 694
 695   g_free (accel);
 696
 697   return retval;
 698 }
 699
 700 static void
 701 add_to_window (GtkWindow  *window,
 702                GtkMenuBar *menubar)
 703 {
 704   GList *menubars = get_menu_bars (window);
 705
 706   if (!menubars)
 707     {
 708       g_signal_connect (window,
 709                         "key-press-event",
 710                         G_CALLBACK (window_key_press_handler),
 711                         NULL);
 712     }
 713
 714   set_menu_bars (window, g_list_prepend (menubars, menubar));
 715 }
 716
 717 static void
 718 remove_from_window (GtkWindow  *window,
 719                     GtkMenuBar *menubar)
 720 {
 721   GList *menubars = get_menu_bars (window);
 722
 723   menubars = g_list_remove (menubars, menubar);
 724
 725   if (!menubars)
 726     {
 727       g_signal_handlers_disconnect_by_func (window,
 728                                             window_key_press_handler,
 729                                             NULL);
 730     }
 731
 732   set_menu_bars (window, menubars);
 733 }
 734
 735 static void
 736 gtk_menu_bar_hierarchy_changed (GtkWidget *widget,
 737                                 GtkWidget *old_toplevel)
 738 {
 739   GtkWidget *toplevel;
 740   GtkMenuBar *menubar;
 741
 742   menubar = GTK_MENU_BAR (widget);
 743
 744   toplevel = gtk_widget_get_toplevel (widget);
 745
 746   if (old_toplevel)
 747     remove_from_window (GTK_WINDOW (old_toplevel), menubar);
 748
 749   if (gtk_widget_is_toplevel (toplevel))
 750     add_to_window (GTK_WINDOW (toplevel), menubar);
 751 }
 752
 753 /**
 754  * _gtk_menu_bar_cycle_focus:
 755  * @menubar: a #GtkMenuBar
 756  * @dir: direction in which to cycle the focus
 757  *
 758  * Move the focus between menubars in the toplevel.
 759  **/
 760 void
 761 _gtk_menu_bar_cycle_focus (GtkMenuBar       *menubar,
 762                            GtkDirectionType  dir)
 763 {
 764   GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (menubar));
 765   GtkMenuItem *to_activate = NULL;
 766
 767   if (gtk_widget_is_toplevel (toplevel))
 768     {
 769       GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (toplevel));
 770       GList *menubars;
 771       GList *current;
 772
 773       menubars = _gtk_container_focus_sort (GTK_CONTAINER (toplevel), tmp_menubars,
 774                                             dir, GTK_WIDGET (menubar));
 775       g_list_free (tmp_menubars);
 776
 777       if (menubars)
 778         {
 779           current = g_list_find (menubars, menubar);
 780
 781           if (current && current->next)
 782             {
 783               GtkMenuShell *new_menushell = GTK_MENU_SHELL (current->next->data);
 784               if (new_menushell->priv->children)
 785                 to_activate = new_menushell->priv->children->data;
 786             }
 787         }
 788
 789       g_list_free (menubars);
 790     }
 791
 792   gtk_menu_shell_cancel (GTK_MENU_SHELL (menubar));
 793
 794   if (to_activate)
 795     g_signal_emit_by_name (to_activate, "activate_item");
 796 }
 797
 798 static GtkShadowType
 799 get_shadow_type (GtkMenuBar *menubar)
 800 {
 801   GtkShadowType shadow_type = GTK_SHADOW_OUT;
 802
 803   gtk_widget_style_get (GTK_WIDGET (menubar),
 804                         "shadow-type", &shadow_type,
 805                         NULL);
 806
 807   return shadow_type;
 808 }
 809
 810 static gint
 811 gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell)
 812 {
 813   gint popup_delay;
 814
 815   g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
 816                 "gtk-menu-bar-popup-delay", &popup_delay,
 817                 NULL);
 818
 819   return popup_delay;
 820 }
 821
 822 static void
 823 gtk_menu_bar_move_current (GtkMenuShell         *menu_shell,
 824                            GtkMenuDirectionType  direction)
 825 {
 826   GtkMenuBar *menubar = GTK_MENU_BAR (menu_shell);
 827   GtkTextDirection text_dir;
 828   GtkPackDirection pack_dir;
 829
 830   text_dir = gtk_widget_get_direction (GTK_WIDGET (menubar));
 831   pack_dir = gtk_menu_bar_get_pack_direction (menubar);
 832
 833   if (pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL)
 834      {
 835       if ((text_dir == GTK_TEXT_DIR_RTL) == (pack_dir == GTK_PACK_DIRECTION_LTR))
 836         {
 837           switch (direction)
 838             {
 839             case GTK_MENU_DIR_PREV:
 840               direction = GTK_MENU_DIR_NEXT;
 841               break;
 842             case GTK_MENU_DIR_NEXT:
 843               direction = GTK_MENU_DIR_PREV;
 844               break;
 845             default: ;
 846             }
 847         }
 848     }
 849   else
 850     {
 851       switch (direction)
 852         {
 853         case GTK_MENU_DIR_PARENT:
 854           if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
 855             direction = GTK_MENU_DIR_PREV;
 856           else
 857             direction = GTK_MENU_DIR_NEXT;
 858           break;
 859         case GTK_MENU_DIR_CHILD:
 860           if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
 861             direction = GTK_MENU_DIR_NEXT;
 862           else
 863             direction = GTK_MENU_DIR_PREV;
 864           break;
 865         case GTK_MENU_DIR_PREV:
 866           if (text_dir == GTK_TEXT_DIR_RTL)
 867             direction = GTK_MENU_DIR_CHILD;
 868           else
 869             direction = GTK_MENU_DIR_PARENT;
 870           break;
 871         case GTK_MENU_DIR_NEXT:
 872           if (text_dir == GTK_TEXT_DIR_RTL)
 873             direction = GTK_MENU_DIR_PARENT;
 874           else
 875             direction = GTK_MENU_DIR_CHILD;
 876           break;
 877         default: ;
 878         }
 879     }
 880
 881   GTK_MENU_SHELL_CLASS (gtk_menu_bar_parent_class)->move_current (menu_shell, direction);
 882 }
 883
 884 /**
 885  * gtk_menu_bar_get_pack_direction:
 886  * @menubar: a #GtkMenuBar
 887  *
 888  * Retrieves the current pack direction of the menubar.
 889  * See gtk_menu_bar_set_pack_direction().
 890  *
 891  * Return value: the pack direction
 892  *
 893  * Since: 2.8
 894  */
 895 GtkPackDirection
 896 gtk_menu_bar_get_pack_direction (GtkMenuBar *menubar)
 897 {
 898   g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
 899                         GTK_PACK_DIRECTION_LTR);
 900
 901   return menubar->priv->pack_direction;
 902 }
 903
 904 /**
 905  * gtk_menu_bar_set_pack_direction:
 906  * @menubar: a #GtkMenuBar
 907  * @pack_dir: a new #GtkPackDirection
 908  *
 909  * Sets how items should be packed inside a menubar.
 910  *
 911  * Since: 2.8
 912  */
 913 void
 914 gtk_menu_bar_set_pack_direction (GtkMenuBar       *menubar,
 915                                  GtkPackDirection  pack_dir)
 916 {
 917   GtkMenuBarPrivate *priv;
 918   GList *l;
 919
 920   g_return_if_fail (GTK_IS_MENU_BAR (menubar));
 921
 922   priv = menubar->priv;
 923
 924   if (priv->pack_direction != pack_dir)
 925     {
 926       priv->pack_direction = pack_dir;
 927
 928       gtk_widget_queue_resize (GTK_WIDGET (menubar));
 929
 930       for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
 931         gtk_widget_queue_resize (GTK_WIDGET (l->data));
 932
 933       g_object_notify (G_OBJECT (menubar), "pack-direction");
 934     }
 935 }
 936
 937 /**
 938  * gtk_menu_bar_get_child_pack_direction:
 939  * @menubar: a #GtkMenuBar
 940  *
 941  * Retrieves the current child pack direction of the menubar.
 942  * See gtk_menu_bar_set_child_pack_direction().
 943  *
 944  * Return value: the child pack direction
 945  *
 946  * Since: 2.8
 947  */
 948 GtkPackDirection
 949 gtk_menu_bar_get_child_pack_direction (GtkMenuBar *menubar)
 950 {
 951   g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
 952                         GTK_PACK_DIRECTION_LTR);
 953
 954   return menubar->priv->child_pack_direction;
 955 }
 956
 957 /**
 958  * gtk_menu_bar_set_child_pack_direction:
 959  * @menubar: a #GtkMenuBar
 960  * @child_pack_dir: a new #GtkPackDirection
 961  *
 962  * Sets how widgets should be packed inside the children of a menubar.
 963  *
 964  * Since: 2.8
 965  */
 966 void
 967 gtk_menu_bar_set_child_pack_direction (GtkMenuBar       *menubar,
 968                                        GtkPackDirection  child_pack_dir)
 969 {
 970   GtkMenuBarPrivate *priv;
 971   GList *l;
 972
 973   g_return_if_fail (GTK_IS_MENU_BAR (menubar));
 974
 975   priv = menubar->priv;
 976
 977   if (priv->child_pack_direction != child_pack_dir)
 978     {
 979       priv->child_pack_direction = child_pack_dir;
 980
 981       gtk_widget_queue_resize (GTK_WIDGET (menubar));
 982
 983       for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
 984         gtk_widget_queue_resize (GTK_WIDGET (l->data));
 985
 986       g_object_notify (G_OBJECT (menubar), "child-pack-direction");
 987     }
 988 }