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, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 /*
  19  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  20  * file for a list of people on the GTK+ Team.  See the ChangeLog
  21  * files for a list of changes.  These files are distributed with
  22  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  23  */
  24
  25 /**
  26  * SECTION:gtkmenubar
  27  * @Title: GtkMenuBar
  28  * @Short_description: A subclass of GtkMenuShell which holds GtkMenuItem widgets
  29  * @See_also: #GtkMenuShell, #GtkMenu, #GtkMenuItem
  30  *
  31  * The #GtkMenuBar is a subclass of #GtkMenuShell which contains one or
  32  * more #GtkMenuItems. The result is a standard menu bar which can hold
  33  * many menu items.
  34  */
  35
  36 #include "config.h"
  37
  38 #include "gtkmenubar.h"
  39
  40 #include "gtkbindings.h"
  41 #include "gtkmain.h"
  42 #include "gtkmarshalers.h"
  43 #include "gtkmenuitemprivate.h"
  44 #include "gtkmenuprivate.h"
  45 #include "gtkmenushellprivate.h"
  46 #include "gtksettings.h"
  47 #include "gtksizerequest.h"
  48 #include "gtkwindow.h"
  49 #include "gtkcontainerprivate.h"
  50 #include "gtkintl.h"
  51 #include "gtkprivate.h"
  52 #include "gtktypebuiltins.h"
  53
  54 #define BORDER_SPACING  0
  55 #define DEFAULT_IPADDING 1
  56
  57 /* Properties */
  58 enum {
  59   PROP_0,
  60   PROP_PACK_DIRECTION,
  61   PROP_CHILD_PACK_DIRECTION
  62 };
  63
  64 struct _GtkMenuBarPrivate
  65 {
  66   GtkPackDirection pack_direction;
  67   GtkPackDirection child_pack_direction;
  68 };
  69
  70
  71 static void gtk_menu_bar_set_property      (GObject             *object,
  72                                             guint                prop_id,
  73                                             const GValue        *value,
  74                                             GParamSpec          *pspec);
  75 static void gtk_menu_bar_get_property      (GObject             *object,
  76                                             guint                prop_id,
  77                                             GValue              *value,
  78                                             GParamSpec          *pspec);
  79 static void gtk_menu_bar_get_preferred_width (GtkWidget     *widget,
  80                                               gint          *minimum,
  81                                               gint          *natural);
  82 static void gtk_menu_bar_get_preferred_height (GtkWidget    *widget,
  83                                                gint         *minimum,
  84                                                gint         *natural);
  85 static void gtk_menu_bar_get_preferred_width_for_height (GtkWidget    *widget,
  86                                                          gint          height,
  87                                                          gint         *minimum,
  88                                                          gint         *natural);
  89 static void gtk_menu_bar_get_preferred_height_for_width (GtkWidget    *widget,
  90                                                          gint          width,
  91                                                          gint         *minimum,
  92                                                          gint         *natural);
  93 static void gtk_menu_bar_size_allocate     (GtkWidget       *widget,
  94                                             GtkAllocation   *allocation);
  95 static gint gtk_menu_bar_draw              (GtkWidget       *widget,
  96                                             cairo_t         *cr);
  97 static void gtk_menu_bar_hierarchy_changed (GtkWidget       *widget,
  98                                             GtkWidget       *old_toplevel);
  99 static gint gtk_menu_bar_get_popup_delay   (GtkMenuShell    *menu_shell);
 100 static void gtk_menu_bar_move_current      (GtkMenuShell     *menu_shell,
 101                                             GtkMenuDirectionType direction);
 102
 103 static GtkShadowType get_shadow_type   (GtkMenuBar      *menubar);
 104
 105 G_DEFINE_TYPE (GtkMenuBar, gtk_menu_bar, GTK_TYPE_MENU_SHELL)
 106
 107 static void
 108 gtk_menu_bar_class_init (GtkMenuBarClass *class)
 109 {
 110   GObjectClass *gobject_class;
 111   GtkWidgetClass *widget_class;
 112   GtkMenuShellClass *menu_shell_class;
 113
 114   GtkBindingSet *binding_set;
 115
 116   gobject_class = (GObjectClass*) class;
 117   widget_class = (GtkWidgetClass*) class;
 118   menu_shell_class = (GtkMenuShellClass*) class;
 119
 120   gobject_class->get_property = gtk_menu_bar_get_property;
 121   gobject_class->set_property = gtk_menu_bar_set_property;
 122
 123   widget_class->get_preferred_width = gtk_menu_bar_get_preferred_width;
 124   widget_class->get_preferred_height = gtk_menu_bar_get_preferred_height;
 125   widget_class->get_preferred_width_for_height = gtk_menu_bar_get_preferred_width_for_height;
 126   widget_class->get_preferred_height_for_width = gtk_menu_bar_get_preferred_height_for_width;
 127   widget_class->size_allocate = gtk_menu_bar_size_allocate;
 128   widget_class->draw = gtk_menu_bar_draw;
 129   widget_class->hierarchy_changed = gtk_menu_bar_hierarchy_changed;
 130
 131   gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_MENU_BAR);
 132
 133   menu_shell_class->submenu_placement = GTK_TOP_BOTTOM;
 134   menu_shell_class->get_popup_delay = gtk_menu_bar_get_popup_delay;
 135   menu_shell_class->move_current = gtk_menu_bar_move_current;
 136
 137   binding_set = gtk_binding_set_by_class (class);
 138   gtk_binding_entry_add_signal (binding_set,
 139                                 GDK_KEY_Left, 0,
 140                                 "move-current", 1,
 141                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 142                                 GTK_MENU_DIR_PREV);
 143   gtk_binding_entry_add_signal (binding_set,
 144                                 GDK_KEY_KP_Left, 0,
 145                                 "move-current", 1,
 146                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 147                                 GTK_MENU_DIR_PREV);
 148   gtk_binding_entry_add_signal (binding_set,
 149                                 GDK_KEY_Right, 0,
 150                                 "move-current", 1,
 151                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 152                                 GTK_MENU_DIR_NEXT);
 153   gtk_binding_entry_add_signal (binding_set,
 154                                 GDK_KEY_KP_Right, 0,
 155                                 "move-current", 1,
 156                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 157                                 GTK_MENU_DIR_NEXT);
 158   gtk_binding_entry_add_signal (binding_set,
 159                                 GDK_KEY_Up, 0,
 160                                 "move-current", 1,
 161                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 162                                 GTK_MENU_DIR_PARENT);
 163   gtk_binding_entry_add_signal (binding_set,
 164                                 GDK_KEY_KP_Up, 0,
 165                                 "move-current", 1,
 166                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 167                                 GTK_MENU_DIR_PARENT);
 168   gtk_binding_entry_add_signal (binding_set,
 169                                 GDK_KEY_Down, 0,
 170                                 "move-current", 1,
 171                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 172                                 GTK_MENU_DIR_CHILD);
 173   gtk_binding_entry_add_signal (binding_set,
 174                                 GDK_KEY_KP_Down, 0,
 175                                 "move-current", 1,
 176                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 177                                 GTK_MENU_DIR_CHILD);
 178
 179   /**
 180    * GtkMenuBar:pack-direction:
 181    *
 182    * The pack direction of the menubar. It determines how
 183    * menuitems are arranged in the menubar.
 184    *
 185    * Since: 2.8
 186    */
 187   g_object_class_install_property (gobject_class,
 188                                    PROP_PACK_DIRECTION,
 189                                    g_param_spec_enum ("pack-direction",
 190                                                       P_("Pack direction"),
 191                                                       P_("The pack direction of the menubar"),
 192                                                       GTK_TYPE_PACK_DIRECTION,
 193                                                       GTK_PACK_DIRECTION_LTR,
 194                                                       GTK_PARAM_READWRITE));
 195
 196   /**
 197    * GtkMenuBar:child-pack-direction:
 198    *
 199    * The child pack direction of the menubar. It determines how
 200    * the widgets contained in child menuitems are arranged.
 201    *
 202    * Since: 2.8
 203    */
 204   g_object_class_install_property (gobject_class,
 205                                    PROP_CHILD_PACK_DIRECTION,
 206                                    g_param_spec_enum ("child-pack-direction",
 207                                                       P_("Child Pack direction"),
 208                                                       P_("The child pack direction of the menubar"),
 209                                                       GTK_TYPE_PACK_DIRECTION,
 210                                                       GTK_PACK_DIRECTION_LTR,
 211                                                       GTK_PARAM_READWRITE));
 212
 213
 214   gtk_widget_class_install_style_property (widget_class,
 215                                            g_param_spec_enum ("shadow-type",
 216                                                               P_("Shadow type"),
 217                                                               P_("Style of bevel around the menubar"),
 218                                                               GTK_TYPE_SHADOW_TYPE,
 219                                                               GTK_SHADOW_OUT,
 220                                                               GTK_PARAM_READABLE));
 221
 222   gtk_widget_class_install_style_property (widget_class,
 223                                            g_param_spec_int ("internal-padding",
 224                                                              P_("Internal padding"),
 225                                                              P_("Amount of border space between the menubar shadow and the menu items"),
 226                                                              0,
 227                                                              G_MAXINT,
 228                                                              DEFAULT_IPADDING,
 229                                                              GTK_PARAM_READABLE));
 230
 231   g_type_class_add_private (gobject_class, sizeof (GtkMenuBarPrivate));
 232 }
 233
 234 static void
 235 gtk_menu_bar_init (GtkMenuBar *menu_bar)
 236 {
 237   GtkStyleContext *context;
 238
 239   menu_bar->priv = G_TYPE_INSTANCE_GET_PRIVATE (menu_bar,
 240                                                 GTK_TYPE_MENU_BAR,
 241                                                 GtkMenuBarPrivate);
 242
 243   context = gtk_widget_get_style_context (GTK_WIDGET (menu_bar));
 244   gtk_style_context_add_class (context, GTK_STYLE_CLASS_MENUBAR);
 245 }
 246
 247 /**
 248  * gtk_menu_bar_new:
 249  *
 250  * Creates a new #GtkMenuBar
 251  *
 252  * Returns: the new menu bar, as a #GtkWidget
 253  */
 254 GtkWidget*
 255 gtk_menu_bar_new (void)
 256 {
 257   return g_object_new (GTK_TYPE_MENU_BAR, NULL);
 258 }
 259
 260 static void
 261 gtk_menu_bar_set_property (GObject      *object,
 262                            guint         prop_id,
 263                            const GValue *value,
 264                            GParamSpec   *pspec)
 265 {
 266   GtkMenuBar *menubar = GTK_MENU_BAR (object);
 267
 268   switch (prop_id)
 269     {
 270     case PROP_PACK_DIRECTION:
 271       gtk_menu_bar_set_pack_direction (menubar, g_value_get_enum (value));
 272       break;
 273     case PROP_CHILD_PACK_DIRECTION:
 274       gtk_menu_bar_set_child_pack_direction (menubar, g_value_get_enum (value));
 275       break;
 276     default:
 277       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 278       break;
 279     }
 280 }
 281
 282 static void
 283 gtk_menu_bar_get_property (GObject    *object,
 284                            guint       prop_id,
 285                            GValue     *value,
 286                            GParamSpec *pspec)
 287 {
 288   GtkMenuBar *menubar = GTK_MENU_BAR (object);
 289
 290   switch (prop_id)
 291     {
 292     case PROP_PACK_DIRECTION:
 293       g_value_set_enum (value, gtk_menu_bar_get_pack_direction (menubar));
 294       break;
 295     case PROP_CHILD_PACK_DIRECTION:
 296       g_value_set_enum (value, gtk_menu_bar_get_child_pack_direction (menubar));
 297       break;
 298     default:
 299       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 300       break;
 301     }
 302 }
 303
 304 static void
 305 get_preferred_size_for_size (GtkWidget      *widget,
 306                              GtkOrientation  orientation,
 307                              gint            size,
 308                              gint           *minimum,
 309                              gint           *natural)
 310 {
 311   if (orientation == GTK_ORIENTATION_HORIZONTAL)
 312     if (size < 0)
 313       gtk_widget_get_preferred_width (widget, minimum, natural);
 314     else
 315       gtk_widget_get_preferred_width_for_height (widget, size, minimum, natural);
 316   else
 317     if (size < 0)
 318       gtk_widget_get_preferred_height (widget, minimum, natural);
 319     else
 320       gtk_widget_get_preferred_height_for_width (widget, size, minimum, natural);
 321 }
 322
 323 static void
 324 gtk_menu_bar_size_request (GtkWidget      *widget,
 325                            GtkOrientation  orientation,
 326                            gint            size,
 327                            gint           *minimum,
 328                            gint           *natural)
 329 {
 330   GtkMenuBar *menu_bar;
 331   GtkMenuBarPrivate *priv;
 332   GtkMenuShell *menu_shell;
 333   GtkWidget *child;
 334   GList *children;
 335   gint ipadding;
 336   guint border_width;
 337   gboolean use_toggle_size, use_maximize;
 338   gint child_minimum, child_natural;
 339
 340   *minimum = 0;
 341   *natural = 0;
 342
 343   menu_bar = GTK_MENU_BAR (widget);
 344   menu_shell = GTK_MENU_SHELL (widget);
 345   priv = menu_bar->priv;
 346
 347   children = menu_shell->priv->children;
 348
 349   if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 350       priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 351     use_toggle_size = (orientation == GTK_ORIENTATION_HORIZONTAL);
 352   else
 353     use_toggle_size = (orientation == GTK_ORIENTATION_VERTICAL);
 354
 355   if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
 356       priv->pack_direction == GTK_PACK_DIRECTION_RTL)
 357     use_maximize = (orientation == GTK_ORIENTATION_VERTICAL);
 358   else
 359     use_maximize = (orientation == GTK_ORIENTATION_HORIZONTAL);
 360
 361   while (children)
 362     {
 363       child = children->data;
 364       children = children->next;
 365
 366       if (gtk_widget_get_visible (child))
 367         {
 368           get_preferred_size_for_size (child, orientation, size, &child_minimum, &child_natural);
 369
 370           if (use_toggle_size)
 371             {
 372               gint toggle_size;
 373
 374               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 375                                                  &toggle_size);
 376
 377               child_minimum += toggle_size;
 378               child_natural += toggle_size;
 379             }
 380
 381           if (use_maximize)
 382             {
 383               *minimum = MAX (*minimum, child_minimum);
 384               *natural = MAX (*natural, child_natural);
 385             }
 386           else
 387             {
 388               *minimum += child_minimum;
 389               *natural += child_natural;
 390             }
 391         }
 392     }
 393
 394   gtk_widget_style_get (widget, "internal-padding", &ipadding, NULL);
 395   border_width = gtk_container_get_border_width (GTK_CONTAINER (menu_bar));
 396   *minimum += (border_width + ipadding + BORDER_SPACING) * 2;
 397   *natural += (border_width + ipadding + BORDER_SPACING) * 2;
 398
 399   if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
 400     {
 401       GtkStyleContext *context;
 402       GtkBorder border;
 403
 404       context = gtk_widget_get_style_context (widget);
 405       gtk_style_context_get_border (context, gtk_widget_get_state_flags (widget),
 406                                     &border);
 407
 408       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 409         {
 410           *minimum += border.left + border.right;
 411           *natural += border.left + border.right;
 412         }
 413       else
 414         {
 415           *minimum += border.top + border.bottom;
 416           *natural += border.top + border.bottom;
 417         }
 418     }
 419 }
 420
 421 static void
 422 gtk_menu_bar_get_preferred_width (GtkWidget *widget,
 423                                   gint      *minimum,
 424                                   gint      *natural)
 425 {
 426   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_HORIZONTAL, -1, minimum, natural);
 427 }
 428
 429 static void
 430 gtk_menu_bar_get_preferred_height (GtkWidget *widget,
 431                                    gint      *minimum,
 432                                    gint      *natural)
 433 {
 434   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_VERTICAL, -1, minimum, natural);
 435 }
 436
 437 static void
 438 gtk_menu_bar_get_preferred_width_for_height (GtkWidget *widget,
 439                                              gint       height,
 440                                              gint      *minimum,
 441                                              gint      *natural)
 442 {
 443   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_HORIZONTAL, height, minimum, natural);
 444 }
 445
 446 static void
 447 gtk_menu_bar_get_preferred_height_for_width (GtkWidget *widget,
 448                                              gint       width,
 449                                              gint      *minimum,
 450                                              gint      *natural)
 451 {
 452   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_VERTICAL, width, minimum, natural);
 453 }
 454
 455 static void
 456 gtk_menu_bar_size_allocate (GtkWidget     *widget,
 457                             GtkAllocation *allocation)
 458 {
 459   GtkMenuBar *menu_bar;
 460   GtkMenuShell *menu_shell;
 461   GtkMenuBarPrivate *priv;
 462   GtkWidget *child;
 463   GList *children;
 464   GtkAllocation remaining_space;
 465   gint ipadding;
 466   guint border_width;
 467   GArray *requested_sizes;
 468   gint toggle_size;
 469   guint i;
 470
 471   g_return_if_fail (GTK_IS_MENU_BAR (widget));
 472   g_return_if_fail (allocation != NULL);
 473
 474   menu_bar = GTK_MENU_BAR (widget);
 475   menu_shell = GTK_MENU_SHELL (widget);
 476   priv = menu_bar->priv;
 477
 478   gtk_widget_set_allocation (widget, allocation);
 479
 480   if (gtk_widget_get_realized (widget))
 481     gdk_window_move_resize (gtk_widget_get_window (widget),
 482                             allocation->x, allocation->y,
 483                             allocation->width, allocation->height);
 484
 485   if (menu_shell->priv->children)
 486     {
 487       gtk_widget_style_get (widget, "internal-padding", &ipadding, NULL);
 488
 489       border_width = gtk_container_get_border_width (GTK_CONTAINER (menu_bar));
 490       remaining_space.x = (border_width +
 491                             ipadding +
 492                             BORDER_SPACING);
 493       remaining_space.y = (border_width +
 494                             ipadding +
 495                             BORDER_SPACING);
 496       remaining_space.width = allocation->width -
 497                                2 * (border_width + ipadding + BORDER_SPACING);
 498       remaining_space.height = allocation->height -
 499                                 2 * (border_width + ipadding + BORDER_SPACING);
 500
 501       if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
 502         {
 503           GtkStyleContext *context;
 504           GtkBorder border;
 505
 506           context = gtk_widget_get_style_context (widget);
 507           gtk_style_context_get_border (context, gtk_widget_get_state_flags (widget),
 508                                         &border);
 509
 510           remaining_space.x += border.left;
 511           remaining_space.y += border.top;
 512           remaining_space.width -= border.left + border.right;
 513           remaining_space.height -= border.top + border.bottom;
 514         }
 515
 516       requested_sizes = g_array_new (FALSE, FALSE, sizeof (GtkRequestedSize));
 517
 518       if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
 519           priv->pack_direction == GTK_PACK_DIRECTION_RTL)
 520         {
 521           int size = remaining_space.width;
 522           gboolean ltr = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR) == (priv->pack_direction == GTK_PACK_DIRECTION_LTR);
 523
 524           for (children = menu_shell->priv->children; children; children = children->next)
 525             {
 526               GtkRequestedSize request;
 527               child = children->data;
 528
 529               if (!gtk_widget_get_visible (child))
 530                 continue;
 531
 532               request.data = child;
 533               gtk_widget_get_preferred_width_for_height (child,
 534                                                          remaining_space.height,
 535                                                          &request.minimum_size,
 536                                                          &request.natural_size);
 537               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 538                                                  &toggle_size);
 539               request.minimum_size += toggle_size;
 540               request.natural_size += toggle_size;
 541
 542               gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child), toggle_size);
 543
 544               g_array_append_val (requested_sizes, request);
 545
 546               size -= request.minimum_size;
 547             }
 548
 549           size = gtk_distribute_natural_allocation (size,
 550                                                     requested_sizes->len,
 551                                                     (GtkRequestedSize *) requested_sizes->data);
 552
 553           for (i = 0; i < requested_sizes->len; i++)
 554             {
 555               GtkAllocation child_allocation = remaining_space;
 556               GtkRequestedSize *request = &g_array_index (requested_sizes, GtkRequestedSize, i);
 557
 558               child_allocation.width = request->minimum_size;
 559               remaining_space.width -= request->minimum_size;
 560
 561               if (i + 1 == requested_sizes->len && GTK_IS_MENU_ITEM (request->data) &&
 562                   GTK_MENU_ITEM (request->data)->priv->right_justify)
 563                 ltr = !ltr;
 564
 565               if (ltr)
 566                 remaining_space.x += request->minimum_size;
 567               else
 568                 child_allocation.x += remaining_space.width;
 569
 570               gtk_widget_size_allocate (request->data, &child_allocation);
 571             }
 572         }
 573       else
 574         {
 575           int size = remaining_space.height;
 576           gboolean ttb = (priv->pack_direction == GTK_PACK_DIRECTION_TTB);
 577
 578           for (children = menu_shell->priv->children; children; children = children->next)
 579             {
 580               GtkRequestedSize request;
 581               child = children->data;
 582
 583               if (!gtk_widget_get_visible (child))
 584                 continue;
 585
 586               request.data = child;
 587               gtk_widget_get_preferred_height_for_width (child,
 588                                                          remaining_space.width,
 589                                                          &request.minimum_size,
 590                                                          &request.natural_size);
 591               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 592                                                  &toggle_size);
 593               request.minimum_size += toggle_size;
 594               request.natural_size += toggle_size;
 595
 596               gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child), toggle_size);
 597
 598               g_array_append_val (requested_sizes, request);
 599
 600               size -= request.minimum_size;
 601             }
 602
 603           size = gtk_distribute_natural_allocation (size,
 604                                                     requested_sizes->len,
 605                                                     (GtkRequestedSize *) requested_sizes->data);
 606
 607           for (i = 0; i < requested_sizes->len; i++)
 608             {
 609               GtkAllocation child_allocation = remaining_space;
 610               GtkRequestedSize *request = &g_array_index (requested_sizes, GtkRequestedSize, i);
 611
 612               child_allocation.height = request->minimum_size;
 613               remaining_space.height -= request->minimum_size;
 614
 615               if (i + 1 == requested_sizes->len && GTK_IS_MENU_ITEM (request->data) &&
 616                   GTK_MENU_ITEM (request->data)->priv->right_justify)
 617                 ttb = !ttb;
 618
 619               if (ttb)
 620                 remaining_space.y += request->minimum_size;
 621               else
 622                 child_allocation.y += remaining_space.height;
 623
 624               gtk_widget_size_allocate (request->data, &child_allocation);
 625             }
 626         }
 627
 628       g_array_free (requested_sizes, TRUE);
 629     }
 630 }
 631
 632 static gint
 633 gtk_menu_bar_draw (GtkWidget *widget,
 634                    cairo_t   *cr)
 635 {
 636   GtkStyleContext *context;
 637   int border;
 638
 639   border = gtk_container_get_border_width (GTK_CONTAINER (widget));
 640   context = gtk_widget_get_style_context (widget);
 641
 642   gtk_render_background (context, cr,
 643                          border, border,
 644                          gtk_widget_get_allocated_width (widget) - border * 2,
 645                          gtk_widget_get_allocated_height (widget) - border * 2);
 646
 647   if (get_shadow_type (GTK_MENU_BAR (widget)) != GTK_SHADOW_NONE)
 648     gtk_render_frame (context, cr,
 649                       border, border,
 650                       gtk_widget_get_allocated_width (widget) - border * 2,
 651                       gtk_widget_get_allocated_height (widget) - border * 2);
 652
 653   GTK_WIDGET_CLASS (gtk_menu_bar_parent_class)->draw (widget, cr);
 654
 655   return FALSE;
 656 }
 657
 658 static GList *
 659 get_menu_bars (GtkWindow *window)
 660 {
 661   return g_object_get_data (G_OBJECT (window), "gtk-menu-bar-list");
 662 }
 663
 664 static GList *
 665 get_viewable_menu_bars (GtkWindow *window)
 666 {
 667   GList *menu_bars;
 668   GList *viewable_menu_bars = NULL;
 669
 670   for (menu_bars = get_menu_bars (window);
 671        menu_bars;
 672        menu_bars = menu_bars->next)
 673     {
 674       GtkWidget *widget = menu_bars->data;
 675       gboolean viewable = TRUE;
 676
 677       while (widget)
 678         {
 679           if (!gtk_widget_get_mapped (widget))
 680             viewable = FALSE;
 681
 682           widget = gtk_widget_get_parent (widget);
 683         }
 684
 685       if (viewable)
 686         viewable_menu_bars = g_list_prepend (viewable_menu_bars, menu_bars->data);
 687     }
 688
 689   return g_list_reverse (viewable_menu_bars);
 690 }
 691
 692 static void
 693 set_menu_bars (GtkWindow *window,
 694                GList     *menubars)
 695 {
 696   g_object_set_data (G_OBJECT (window), I_("gtk-menu-bar-list"), menubars);
 697 }
 698
 699 static gboolean
 700 window_key_press_handler (GtkWidget   *widget,
 701                           GdkEventKey *event,
 702                           gpointer     data)
 703 {
 704   gchar *accel = NULL;
 705   gboolean retval = FALSE;
 706
 707   g_object_get (gtk_widget_get_settings (widget),
 708                 "gtk-menu-bar-accel", &accel,
 709                 NULL);
 710
 711   if (accel && *accel)
 712     {
 713       guint keyval = 0;
 714       GdkModifierType mods = 0;
 715
 716       gtk_accelerator_parse (accel, &keyval, &mods);
 717
 718       if (keyval == 0)
 719         g_warning ("Failed to parse menu bar accelerator '%s'\n", accel);
 720
 721       /* FIXME this is wrong, needs to be in the global accel resolution
 722        * thing, to properly consider i18n etc., but that probably requires
 723        * AccelGroup changes etc.
 724        */
 725       if (event->keyval == keyval &&
 726           ((event->state & gtk_accelerator_get_default_mod_mask ()) ==
 727            (mods & gtk_accelerator_get_default_mod_mask ())))
 728         {
 729           GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (widget));
 730           GList *menubars;
 731
 732           menubars = _gtk_container_focus_sort (GTK_CONTAINER (widget), tmp_menubars,
 733                                                 GTK_DIR_TAB_FORWARD, NULL);
 734           g_list_free (tmp_menubars);
 735
 736           if (menubars)
 737             {
 738               GtkMenuShell *menu_shell = GTK_MENU_SHELL (menubars->data);
 739
 740               _gtk_menu_shell_set_keyboard_mode (menu_shell, TRUE);
 741               gtk_menu_shell_select_first (menu_shell, FALSE);
 742
 743               g_list_free (menubars);
 744
 745               retval = TRUE;
 746             }
 747         }
 748     }
 749
 750   g_free (accel);
 751
 752   return retval;
 753 }
 754
 755 static void
 756 add_to_window (GtkWindow  *window,
 757                GtkMenuBar *menubar)
 758 {
 759   GList *menubars = get_menu_bars (window);
 760
 761   if (!menubars)
 762     {
 763       g_signal_connect (window,
 764                         "key-press-event",
 765                         G_CALLBACK (window_key_press_handler),
 766                         NULL);
 767     }
 768
 769   set_menu_bars (window, g_list_prepend (menubars, menubar));
 770 }
 771
 772 static void
 773 remove_from_window (GtkWindow  *window,
 774                     GtkMenuBar *menubar)
 775 {
 776   GList *menubars = get_menu_bars (window);
 777
 778   menubars = g_list_remove (menubars, menubar);
 779
 780   if (!menubars)
 781     {
 782       g_signal_handlers_disconnect_by_func (window,
 783                                             window_key_press_handler,
 784                                             NULL);
 785     }
 786
 787   set_menu_bars (window, menubars);
 788 }
 789
 790 static void
 791 gtk_menu_bar_hierarchy_changed (GtkWidget *widget,
 792                                 GtkWidget *old_toplevel)
 793 {
 794   GtkWidget *toplevel;
 795   GtkMenuBar *menubar;
 796
 797   menubar = GTK_MENU_BAR (widget);
 798
 799   toplevel = gtk_widget_get_toplevel (widget);
 800
 801   if (old_toplevel)
 802     remove_from_window (GTK_WINDOW (old_toplevel), menubar);
 803
 804   if (gtk_widget_is_toplevel (toplevel))
 805     add_to_window (GTK_WINDOW (toplevel), menubar);
 806 }
 807
 808 /**
 809  * _gtk_menu_bar_cycle_focus:
 810  * @menubar: a #GtkMenuBar
 811  * @dir: direction in which to cycle the focus
 812  *
 813  * Move the focus between menubars in the toplevel.
 814  **/
 815 void
 816 _gtk_menu_bar_cycle_focus (GtkMenuBar       *menubar,
 817                            GtkDirectionType  dir)
 818 {
 819   GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (menubar));
 820   GtkMenuItem *to_activate = NULL;
 821
 822   if (gtk_widget_is_toplevel (toplevel))
 823     {
 824       GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (toplevel));
 825       GList *menubars;
 826       GList *current;
 827
 828       menubars = _gtk_container_focus_sort (GTK_CONTAINER (toplevel), tmp_menubars,
 829                                             dir, GTK_WIDGET (menubar));
 830       g_list_free (tmp_menubars);
 831
 832       if (menubars)
 833         {
 834           current = g_list_find (menubars, menubar);
 835
 836           if (current && current->next)
 837             {
 838               GtkMenuShell *new_menushell = GTK_MENU_SHELL (current->next->data);
 839               if (new_menushell->priv->children)
 840                 to_activate = new_menushell->priv->children->data;
 841             }
 842         }
 843
 844       g_list_free (menubars);
 845     }
 846
 847   gtk_menu_shell_cancel (GTK_MENU_SHELL (menubar));
 848
 849   if (to_activate)
 850     g_signal_emit_by_name (to_activate, "activate_item");
 851 }
 852
 853 static GtkShadowType
 854 get_shadow_type (GtkMenuBar *menubar)
 855 {
 856   GtkShadowType shadow_type = GTK_SHADOW_OUT;
 857
 858   gtk_widget_style_get (GTK_WIDGET (menubar),
 859                         "shadow-type", &shadow_type,
 860                         NULL);
 861
 862   return shadow_type;
 863 }
 864
 865 static gint
 866 gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell)
 867 {
 868   gint popup_delay;
 869
 870   g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
 871                 "gtk-menu-bar-popup-delay", &popup_delay,
 872                 NULL);
 873
 874   return popup_delay;
 875 }
 876
 877 static void
 878 gtk_menu_bar_move_current (GtkMenuShell         *menu_shell,
 879                            GtkMenuDirectionType  direction)
 880 {
 881   GtkMenuBar *menubar = GTK_MENU_BAR (menu_shell);
 882   GtkTextDirection text_dir;
 883   GtkPackDirection pack_dir;
 884
 885   text_dir = gtk_widget_get_direction (GTK_WIDGET (menubar));
 886   pack_dir = gtk_menu_bar_get_pack_direction (menubar);
 887
 888   if (pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL)
 889      {
 890       if ((text_dir == GTK_TEXT_DIR_RTL) == (pack_dir == GTK_PACK_DIRECTION_LTR))
 891         {
 892           switch (direction)
 893             {
 894             case GTK_MENU_DIR_PREV:
 895               direction = GTK_MENU_DIR_NEXT;
 896               break;
 897             case GTK_MENU_DIR_NEXT:
 898               direction = GTK_MENU_DIR_PREV;
 899               break;
 900             default: ;
 901             }
 902         }
 903     }
 904   else
 905     {
 906       switch (direction)
 907         {
 908         case GTK_MENU_DIR_PARENT:
 909           if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
 910             direction = GTK_MENU_DIR_PREV;
 911           else
 912             direction = GTK_MENU_DIR_NEXT;
 913           break;
 914         case GTK_MENU_DIR_CHILD:
 915           if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
 916             direction = GTK_MENU_DIR_NEXT;
 917           else
 918             direction = GTK_MENU_DIR_PREV;
 919           break;
 920         case GTK_MENU_DIR_PREV:
 921           if (text_dir == GTK_TEXT_DIR_RTL)
 922             direction = GTK_MENU_DIR_CHILD;
 923           else
 924             direction = GTK_MENU_DIR_PARENT;
 925           break;
 926         case GTK_MENU_DIR_NEXT:
 927           if (text_dir == GTK_TEXT_DIR_RTL)
 928             direction = GTK_MENU_DIR_PARENT;
 929           else
 930             direction = GTK_MENU_DIR_CHILD;
 931           break;
 932         default: ;
 933         }
 934     }
 935
 936   GTK_MENU_SHELL_CLASS (gtk_menu_bar_parent_class)->move_current (menu_shell, direction);
 937 }
 938
 939 /**
 940  * gtk_menu_bar_get_pack_direction:
 941  * @menubar: a #GtkMenuBar
 942  *
 943  * Retrieves the current pack direction of the menubar.
 944  * See gtk_menu_bar_set_pack_direction().
 945  *
 946  * Return value: the pack direction
 947  *
 948  * Since: 2.8
 949  */
 950 GtkPackDirection
 951 gtk_menu_bar_get_pack_direction (GtkMenuBar *menubar)
 952 {
 953   g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
 954                         GTK_PACK_DIRECTION_LTR);
 955
 956   return menubar->priv->pack_direction;
 957 }
 958
 959 /**
 960  * gtk_menu_bar_set_pack_direction:
 961  * @menubar: a #GtkMenuBar
 962  * @pack_dir: a new #GtkPackDirection
 963  *
 964  * Sets how items should be packed inside a menubar.
 965  *
 966  * Since: 2.8
 967  */
 968 void
 969 gtk_menu_bar_set_pack_direction (GtkMenuBar       *menubar,
 970                                  GtkPackDirection  pack_dir)
 971 {
 972   GtkMenuBarPrivate *priv;
 973   GList *l;
 974
 975   g_return_if_fail (GTK_IS_MENU_BAR (menubar));
 976
 977   priv = menubar->priv;
 978
 979   if (priv->pack_direction != pack_dir)
 980     {
 981       priv->pack_direction = pack_dir;
 982
 983       gtk_widget_queue_resize (GTK_WIDGET (menubar));
 984
 985       for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
 986         gtk_widget_queue_resize (GTK_WIDGET (l->data));
 987
 988       g_object_notify (G_OBJECT (menubar), "pack-direction");
 989     }
 990 }
 991
 992 /**
 993  * gtk_menu_bar_get_child_pack_direction:
 994  * @menubar: a #GtkMenuBar
 995  *
 996  * Retrieves the current child pack direction of the menubar.
 997  * See gtk_menu_bar_set_child_pack_direction().
 998  *
 999  * Return value: the child pack direction
1000  *
1001  * Since: 2.8
1002  */
1003 GtkPackDirection
1004 gtk_menu_bar_get_child_pack_direction (GtkMenuBar *menubar)
1005 {
1006   g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
1007                         GTK_PACK_DIRECTION_LTR);
1008
1009   return menubar->priv->child_pack_direction;
1010 }
1011
1012 /**
1013  * gtk_menu_bar_set_child_pack_direction:
1014  * @menubar: a #GtkMenuBar
1015  * @child_pack_dir: a new #GtkPackDirection
1016  *
1017  * Sets how widgets should be packed inside the children of a menubar.
1018  *
1019  * Since: 2.8
1020  */
1021 void
1022 gtk_menu_bar_set_child_pack_direction (GtkMenuBar       *menubar,
1023                                        GtkPackDirection  child_pack_dir)
1024 {
1025   GtkMenuBarPrivate *priv;
1026   GList *l;
1027
1028   g_return_if_fail (GTK_IS_MENU_BAR (menubar));
1029
1030   priv = menubar->priv;
1031
1032   if (priv->child_pack_direction != child_pack_dir)
1033     {
1034       priv->child_pack_direction = child_pack_dir;
1035
1036       gtk_widget_queue_resize (GTK_WIDGET (menubar));
1037
1038       for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
1039         gtk_widget_queue_resize (GTK_WIDGET (l->data));
1040
1041       g_object_notify (G_OBJECT (menubar), "child-pack-direction");
1042     }
1043 }