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_minimum, child_natural;
 327
 328   *minimum = 0;
 329   *natural = 0;
 330
 331   menu_bar = GTK_MENU_BAR (widget);
 332   menu_shell = GTK_MENU_SHELL (widget);
 333   priv = menu_bar->priv;
 334
 335   children = menu_shell->priv->children;
 336
 337   if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 338       priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 339     use_toggle_size = (orientation == GTK_ORIENTATION_HORIZONTAL);
 340   else
 341     use_toggle_size = (orientation == GTK_ORIENTATION_VERTICAL);
 342
 343   if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
 344       priv->pack_direction == GTK_PACK_DIRECTION_RTL)
 345     use_maximize = (orientation == GTK_ORIENTATION_VERTICAL);
 346   else
 347     use_maximize = (orientation == GTK_ORIENTATION_HORIZONTAL);
 348
 349   while (children)
 350     {
 351       child = children->data;
 352       children = children->next;
 353
 354       if (gtk_widget_get_visible (child))
 355         {
 356           get_preferred_size_for_size (child, orientation, -1, &child_minimum, &child_natural);
 357
 358           if (use_toggle_size)
 359             {
 360               gint toggle_size;
 361
 362               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 363                                                  &toggle_size);
 364
 365               child_minimum += toggle_size;
 366               child_natural += toggle_size;
 367             }
 368
 369           if (use_maximize)
 370             {
 371               *minimum = MAX (*minimum, child_minimum);
 372               *natural = MAX (*natural, child_natural);
 373             }
 374           else
 375             {
 376               *minimum += child_minimum;
 377               *natural += child_natural;
 378             }
 379         }
 380     }
 381
 382   gtk_widget_style_get (widget, "internal-padding", &ipadding, NULL);
 383   border_width = gtk_container_get_border_width (GTK_CONTAINER (menu_bar));
 384   *minimum += (border_width + ipadding + BORDER_SPACING) * 2;
 385   *natural += (border_width + ipadding + BORDER_SPACING) * 2;
 386
 387   if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
 388     {
 389       GtkStyleContext *context;
 390       GtkBorder *border;
 391
 392       context = gtk_widget_get_style_context (widget);
 393
 394       gtk_style_context_get (context, 0,
 395                              "border-width", &border,
 396                              NULL);
 397
 398       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 399         {
 400           *minimum += border->left + border->right;
 401           *natural += border->left + border->right;
 402         }
 403       else
 404         {
 405           *minimum += border->top + border->bottom;
 406           *natural += border->top + border->bottom;
 407         }
 408       gtk_border_free (border);
 409     }
 410 }
 411
 412 static void
 413 gtk_menu_bar_get_preferred_width (GtkWidget *widget,
 414                                   gint      *minimum,
 415                                   gint      *natural)
 416 {
 417   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_HORIZONTAL, minimum, natural);
 418 }
 419
 420 static void
 421 gtk_menu_bar_get_preferred_height (GtkWidget *widget,
 422                                    gint      *minimum,
 423                                    gint      *natural)
 424 {
 425   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_VERTICAL, minimum, natural);
 426 }
 427
 428 static void
 429 gtk_menu_bar_size_allocate (GtkWidget     *widget,
 430                             GtkAllocation *allocation)
 431 {
 432   GtkMenuBar *menu_bar;
 433   GtkMenuShell *menu_shell;
 434   GtkMenuBarPrivate *priv;
 435   GtkWidget *child;
 436   GList *children;
 437   GtkAllocation child_allocation;
 438   GtkRequisition child_requisition;
 439   guint offset;
 440   GtkTextDirection direction;
 441   gint ltr_x, ltr_y;
 442   gint ipadding;
 443   guint border_width;
 444
 445   g_return_if_fail (GTK_IS_MENU_BAR (widget));
 446   g_return_if_fail (allocation != NULL);
 447
 448   menu_bar = GTK_MENU_BAR (widget);
 449   menu_shell = GTK_MENU_SHELL (widget);
 450   priv = menu_bar->priv;
 451
 452   direction = gtk_widget_get_direction (widget);
 453
 454   gtk_widget_set_allocation (widget, allocation);
 455
 456   if (gtk_widget_get_realized (widget))
 457     gdk_window_move_resize (gtk_widget_get_window (widget),
 458                             allocation->x, allocation->y,
 459                             allocation->width, allocation->height);
 460
 461   gtk_widget_style_get (widget, "internal-padding", &ipadding, NULL);
 462
 463   if (menu_shell->priv->children)
 464     {
 465       border_width = gtk_container_get_border_width (GTK_CONTAINER (menu_bar));
 466       child_allocation.x = (border_width +
 467                             ipadding +
 468                             BORDER_SPACING);
 469       child_allocation.y = (border_width +
 470                             BORDER_SPACING);
 471
 472       if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
 473         {
 474           GtkStyleContext *context;
 475           GtkBorder *border;
 476
 477           context = gtk_widget_get_style_context (widget);
 478           gtk_style_context_get (context, 0,
 479                                  "border-width", &border,
 480                                  NULL);
 481
 482           child_allocation.x += border->left;
 483           child_allocation.y += border->top;
 484
 485           gtk_border_free (border);
 486         }
 487
 488       if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
 489           priv->pack_direction == GTK_PACK_DIRECTION_RTL)
 490         {
 491           child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
 492
 493           offset = child_allocation.x;  /* Window edge to menubar start */
 494           ltr_x = child_allocation.x;
 495
 496           children = menu_shell->priv->children;
 497           while (children)
 498             {
 499               gint toggle_size;
 500
 501               child = children->data;
 502               children = children->next;
 503
 504               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 505                                                  &toggle_size);
 506               gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 507
 508               if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 509                   priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 510                 child_requisition.width += toggle_size;
 511               else
 512                 child_requisition.height += toggle_size;
 513
 514               /* Support for the right justified help menu */
 515               if (children == NULL &&
 516                   GTK_IS_MENU_ITEM (child) &&
 517                   GTK_MENU_ITEM (child)->priv->right_justify)
 518                 {
 519                   ltr_x = allocation->width -
 520                     child_requisition.width - offset;
 521                 }
 522               if (gtk_widget_get_visible (child))
 523                 {
 524                   if ((direction == GTK_TEXT_DIR_LTR) == (priv->pack_direction == GTK_PACK_DIRECTION_LTR))
 525                     child_allocation.x = ltr_x;
 526                   else
 527                     child_allocation.x = allocation->width -
 528                       child_requisition.width - ltr_x;
 529
 530                   child_allocation.width = child_requisition.width;
 531
 532                   gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child),
 533                                                       toggle_size);
 534                   gtk_widget_size_allocate (child, &child_allocation);
 535
 536                   ltr_x += child_allocation.width;
 537                 }
 538             }
 539         }
 540       else
 541         {
 542           child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2);
 543
 544           offset = child_allocation.y;  /* Window edge to menubar start */
 545           ltr_y = child_allocation.y;
 546
 547           children = menu_shell->priv->children;
 548           while (children)
 549             {
 550               gint toggle_size;
 551
 552               child = children->data;
 553               children = children->next;
 554
 555               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 556                                                  &toggle_size);
 557               gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 558
 559               if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 560                   priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 561                 child_requisition.width += toggle_size;
 562               else
 563                 child_requisition.height += toggle_size;
 564
 565               /* Support for the right justified help menu */
 566               if (children == NULL &&
 567                   GTK_IS_MENU_ITEM (child) &&
 568                   GTK_MENU_ITEM (child)->priv->right_justify)
 569                 {
 570                   ltr_y = allocation->height -
 571                     child_requisition.height - offset;
 572                 }
 573               if (gtk_widget_get_visible (child))
 574                 {
 575                   if ((direction == GTK_TEXT_DIR_LTR) ==
 576                       (priv->pack_direction == GTK_PACK_DIRECTION_TTB))
 577                     child_allocation.y = ltr_y;
 578                   else
 579                     child_allocation.y = allocation->height -
 580                       child_requisition.height - ltr_y;
 581                   child_allocation.height = child_requisition.height;
 582
 583                   gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child),
 584                                                       toggle_size);
 585                   gtk_widget_size_allocate (child, &child_allocation);
 586
 587                   ltr_y += child_allocation.height;
 588                 }
 589             }
 590         }
 591     }
 592 }
 593
 594 static gint
 595 gtk_menu_bar_draw (GtkWidget *widget,
 596                    cairo_t   *cr)
 597 {
 598   GtkStyleContext *context;
 599   GtkStateFlags state;
 600   int border;
 601
 602   border = gtk_container_get_border_width (GTK_CONTAINER (widget));
 603   context = gtk_widget_get_style_context (widget);
 604
 605   state = gtk_widget_get_state_flags (widget);
 606   gtk_style_context_set_state (context, state);
 607
 608   if (get_shadow_type (GTK_MENU_BAR (widget)) != GTK_SHADOW_NONE)
 609     gtk_render_background (context, cr,
 610                            border, border,
 611                            gtk_widget_get_allocated_width (widget) - border * 2,
 612                            gtk_widget_get_allocated_height (widget) - border * 2);
 613
 614   gtk_render_frame (context, cr,
 615                     border, border,
 616                     gtk_widget_get_allocated_width (widget) - border * 2,
 617                     gtk_widget_get_allocated_height (widget) - border * 2);
 618
 619   GTK_WIDGET_CLASS (gtk_menu_bar_parent_class)->draw (widget, cr);
 620
 621   return FALSE;
 622 }
 623
 624 static GList *
 625 get_menu_bars (GtkWindow *window)
 626 {
 627   return g_object_get_data (G_OBJECT (window), "gtk-menu-bar-list");
 628 }
 629
 630 static GList *
 631 get_viewable_menu_bars (GtkWindow *window)
 632 {
 633   GList *menu_bars;
 634   GList *viewable_menu_bars = NULL;
 635
 636   for (menu_bars = get_menu_bars (window);
 637        menu_bars;
 638        menu_bars = menu_bars->next)
 639     {
 640       GtkWidget *widget = menu_bars->data;
 641       gboolean viewable = TRUE;
 642
 643       while (widget)
 644         {
 645           if (!gtk_widget_get_mapped (widget))
 646             viewable = FALSE;
 647
 648           widget = gtk_widget_get_parent (widget);
 649         }
 650
 651       if (viewable)
 652         viewable_menu_bars = g_list_prepend (viewable_menu_bars, menu_bars->data);
 653     }
 654
 655   return g_list_reverse (viewable_menu_bars);
 656 }
 657
 658 static void
 659 set_menu_bars (GtkWindow *window,
 660                GList     *menubars)
 661 {
 662   g_object_set_data (G_OBJECT (window), I_("gtk-menu-bar-list"), menubars);
 663 }
 664
 665 static gboolean
 666 window_key_press_handler (GtkWidget   *widget,
 667                           GdkEventKey *event,
 668                           gpointer     data)
 669 {
 670   gchar *accel = NULL;
 671   gboolean retval = FALSE;
 672
 673   g_object_get (gtk_widget_get_settings (widget),
 674                 "gtk-menu-bar-accel", &accel,
 675                 NULL);
 676
 677   if (accel && *accel)
 678     {
 679       guint keyval = 0;
 680       GdkModifierType mods = 0;
 681
 682       gtk_accelerator_parse (accel, &keyval, &mods);
 683
 684       if (keyval == 0)
 685         g_warning ("Failed to parse menu bar accelerator '%s'\n", accel);
 686
 687       /* FIXME this is wrong, needs to be in the global accel resolution
 688        * thing, to properly consider i18n etc., but that probably requires
 689        * AccelGroup changes etc.
 690        */
 691       if (event->keyval == keyval &&
 692           ((event->state & gtk_accelerator_get_default_mod_mask ()) ==
 693            (mods & gtk_accelerator_get_default_mod_mask ())))
 694         {
 695           GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (widget));
 696           GList *menubars;
 697
 698           menubars = _gtk_container_focus_sort (GTK_CONTAINER (widget), tmp_menubars,
 699                                                 GTK_DIR_TAB_FORWARD, NULL);
 700           g_list_free (tmp_menubars);
 701
 702           if (menubars)
 703             {
 704               GtkMenuShell *menu_shell = GTK_MENU_SHELL (menubars->data);
 705
 706               _gtk_menu_shell_set_keyboard_mode (menu_shell, TRUE);
 707               gtk_menu_shell_select_first (menu_shell, FALSE);
 708
 709               g_list_free (menubars);
 710
 711               retval = TRUE;
 712             }
 713         }
 714     }
 715
 716   g_free (accel);
 717
 718   return retval;
 719 }
 720
 721 static void
 722 add_to_window (GtkWindow  *window,
 723                GtkMenuBar *menubar)
 724 {
 725   GList *menubars = get_menu_bars (window);
 726
 727   if (!menubars)
 728     {
 729       g_signal_connect (window,
 730                         "key-press-event",
 731                         G_CALLBACK (window_key_press_handler),
 732                         NULL);
 733     }
 734
 735   set_menu_bars (window, g_list_prepend (menubars, menubar));
 736 }
 737
 738 static void
 739 remove_from_window (GtkWindow  *window,
 740                     GtkMenuBar *menubar)
 741 {
 742   GList *menubars = get_menu_bars (window);
 743
 744   menubars = g_list_remove (menubars, menubar);
 745
 746   if (!menubars)
 747     {
 748       g_signal_handlers_disconnect_by_func (window,
 749                                             window_key_press_handler,
 750                                             NULL);
 751     }
 752
 753   set_menu_bars (window, menubars);
 754 }
 755
 756 static void
 757 gtk_menu_bar_hierarchy_changed (GtkWidget *widget,
 758                                 GtkWidget *old_toplevel)
 759 {
 760   GtkWidget *toplevel;
 761   GtkMenuBar *menubar;
 762
 763   menubar = GTK_MENU_BAR (widget);
 764
 765   toplevel = gtk_widget_get_toplevel (widget);
 766
 767   if (old_toplevel)
 768     remove_from_window (GTK_WINDOW (old_toplevel), menubar);
 769
 770   if (gtk_widget_is_toplevel (toplevel))
 771     add_to_window (GTK_WINDOW (toplevel), menubar);
 772 }
 773
 774 /**
 775  * _gtk_menu_bar_cycle_focus:
 776  * @menubar: a #GtkMenuBar
 777  * @dir: direction in which to cycle the focus
 778  *
 779  * Move the focus between menubars in the toplevel.
 780  **/
 781 void
 782 _gtk_menu_bar_cycle_focus (GtkMenuBar       *menubar,
 783                            GtkDirectionType  dir)
 784 {
 785   GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (menubar));
 786   GtkMenuItem *to_activate = NULL;
 787
 788   if (gtk_widget_is_toplevel (toplevel))
 789     {
 790       GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (toplevel));
 791       GList *menubars;
 792       GList *current;
 793
 794       menubars = _gtk_container_focus_sort (GTK_CONTAINER (toplevel), tmp_menubars,
 795                                             dir, GTK_WIDGET (menubar));
 796       g_list_free (tmp_menubars);
 797
 798       if (menubars)
 799         {
 800           current = g_list_find (menubars, menubar);
 801
 802           if (current && current->next)
 803             {
 804               GtkMenuShell *new_menushell = GTK_MENU_SHELL (current->next->data);
 805               if (new_menushell->priv->children)
 806                 to_activate = new_menushell->priv->children->data;
 807             }
 808         }
 809
 810       g_list_free (menubars);
 811     }
 812
 813   gtk_menu_shell_cancel (GTK_MENU_SHELL (menubar));
 814
 815   if (to_activate)
 816     g_signal_emit_by_name (to_activate, "activate_item");
 817 }
 818
 819 static GtkShadowType
 820 get_shadow_type (GtkMenuBar *menubar)
 821 {
 822   GtkShadowType shadow_type = GTK_SHADOW_OUT;
 823
 824   gtk_widget_style_get (GTK_WIDGET (menubar),
 825                         "shadow-type", &shadow_type,
 826                         NULL);
 827
 828   return shadow_type;
 829 }
 830
 831 static gint
 832 gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell)
 833 {
 834   gint popup_delay;
 835
 836   g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
 837                 "gtk-menu-bar-popup-delay", &popup_delay,
 838                 NULL);
 839
 840   return popup_delay;
 841 }
 842
 843 static void
 844 gtk_menu_bar_move_current (GtkMenuShell         *menu_shell,
 845                            GtkMenuDirectionType  direction)
 846 {
 847   GtkMenuBar *menubar = GTK_MENU_BAR (menu_shell);
 848   GtkTextDirection text_dir;
 849   GtkPackDirection pack_dir;
 850
 851   text_dir = gtk_widget_get_direction (GTK_WIDGET (menubar));
 852   pack_dir = gtk_menu_bar_get_pack_direction (menubar);
 853
 854   if (pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL)
 855      {
 856       if ((text_dir == GTK_TEXT_DIR_RTL) == (pack_dir == GTK_PACK_DIRECTION_LTR))
 857         {
 858           switch (direction)
 859             {
 860             case GTK_MENU_DIR_PREV:
 861               direction = GTK_MENU_DIR_NEXT;
 862               break;
 863             case GTK_MENU_DIR_NEXT:
 864               direction = GTK_MENU_DIR_PREV;
 865               break;
 866             default: ;
 867             }
 868         }
 869     }
 870   else
 871     {
 872       switch (direction)
 873         {
 874         case GTK_MENU_DIR_PARENT:
 875           if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
 876             direction = GTK_MENU_DIR_PREV;
 877           else
 878             direction = GTK_MENU_DIR_NEXT;
 879           break;
 880         case GTK_MENU_DIR_CHILD:
 881           if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
 882             direction = GTK_MENU_DIR_NEXT;
 883           else
 884             direction = GTK_MENU_DIR_PREV;
 885           break;
 886         case GTK_MENU_DIR_PREV:
 887           if (text_dir == GTK_TEXT_DIR_RTL)
 888             direction = GTK_MENU_DIR_CHILD;
 889           else
 890             direction = GTK_MENU_DIR_PARENT;
 891           break;
 892         case GTK_MENU_DIR_NEXT:
 893           if (text_dir == GTK_TEXT_DIR_RTL)
 894             direction = GTK_MENU_DIR_PARENT;
 895           else
 896             direction = GTK_MENU_DIR_CHILD;
 897           break;
 898         default: ;
 899         }
 900     }
 901
 902   GTK_MENU_SHELL_CLASS (gtk_menu_bar_parent_class)->move_current (menu_shell, direction);
 903 }
 904
 905 /**
 906  * gtk_menu_bar_get_pack_direction:
 907  * @menubar: a #GtkMenuBar
 908  *
 909  * Retrieves the current pack direction of the menubar.
 910  * See gtk_menu_bar_set_pack_direction().
 911  *
 912  * Return value: the pack direction
 913  *
 914  * Since: 2.8
 915  */
 916 GtkPackDirection
 917 gtk_menu_bar_get_pack_direction (GtkMenuBar *menubar)
 918 {
 919   g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
 920                         GTK_PACK_DIRECTION_LTR);
 921
 922   return menubar->priv->pack_direction;
 923 }
 924
 925 /**
 926  * gtk_menu_bar_set_pack_direction:
 927  * @menubar: a #GtkMenuBar
 928  * @pack_dir: a new #GtkPackDirection
 929  *
 930  * Sets how items should be packed inside a menubar.
 931  *
 932  * Since: 2.8
 933  */
 934 void
 935 gtk_menu_bar_set_pack_direction (GtkMenuBar       *menubar,
 936                                  GtkPackDirection  pack_dir)
 937 {
 938   GtkMenuBarPrivate *priv;
 939   GList *l;
 940
 941   g_return_if_fail (GTK_IS_MENU_BAR (menubar));
 942
 943   priv = menubar->priv;
 944
 945   if (priv->pack_direction != pack_dir)
 946     {
 947       priv->pack_direction = pack_dir;
 948
 949       gtk_widget_queue_resize (GTK_WIDGET (menubar));
 950
 951       for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
 952         gtk_widget_queue_resize (GTK_WIDGET (l->data));
 953
 954       g_object_notify (G_OBJECT (menubar), "pack-direction");
 955     }
 956 }
 957
 958 /**
 959  * gtk_menu_bar_get_child_pack_direction:
 960  * @menubar: a #GtkMenuBar
 961  *
 962  * Retrieves the current child pack direction of the menubar.
 963  * See gtk_menu_bar_set_child_pack_direction().
 964  *
 965  * Return value: the child pack direction
 966  *
 967  * Since: 2.8
 968  */
 969 GtkPackDirection
 970 gtk_menu_bar_get_child_pack_direction (GtkMenuBar *menubar)
 971 {
 972   g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
 973                         GTK_PACK_DIRECTION_LTR);
 974
 975   return menubar->priv->child_pack_direction;
 976 }
 977
 978 /**
 979  * gtk_menu_bar_set_child_pack_direction:
 980  * @menubar: a #GtkMenuBar
 981  * @child_pack_dir: a new #GtkPackDirection
 982  *
 983  * Sets how widgets should be packed inside the children of a menubar.
 984  *
 985  * Since: 2.8
 986  */
 987 void
 988 gtk_menu_bar_set_child_pack_direction (GtkMenuBar       *menubar,
 989                                        GtkPackDirection  child_pack_dir)
 990 {
 991   GtkMenuBarPrivate *priv;
 992   GList *l;
 993
 994   g_return_if_fail (GTK_IS_MENU_BAR (menubar));
 995
 996   priv = menubar->priv;
 997
 998   if (priv->child_pack_direction != child_pack_dir)
 999     {
1000       priv->child_pack_direction = child_pack_dir;
1001
1002       gtk_widget_queue_resize (GTK_WIDGET (menubar));
1003
1004       for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
1005         gtk_widget_queue_resize (GTK_WIDGET (l->data));
1006
1007       g_object_notify (G_OBJECT (menubar), "child-pack-direction");
1008     }
1009 }