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 "gtkcontainerprivate.h"
  52 #include "gtkintl.h"
  53 #include "gtkprivate.h"
  54 #include "gtktypebuiltins.h"
  55 #include "a11y/gtkmenushellaccessible.h"
  56
  57 #define BORDER_SPACING  0
  58 #define DEFAULT_IPADDING 1
  59
  60 /* Properties */
  61 enum {
  62   PROP_0,
  63   PROP_PACK_DIRECTION,
  64   PROP_CHILD_PACK_DIRECTION
  65 };
  66
  67 struct _GtkMenuBarPrivate
  68 {
  69   GtkPackDirection pack_direction;
  70   GtkPackDirection child_pack_direction;
  71 };
  72
  73
  74 static void gtk_menu_bar_set_property      (GObject             *object,
  75                                             guint                prop_id,
  76                                             const GValue        *value,
  77                                             GParamSpec          *pspec);
  78 static void gtk_menu_bar_get_property      (GObject             *object,
  79                                             guint                prop_id,
  80                                             GValue              *value,
  81                                             GParamSpec          *pspec);
  82 static void gtk_menu_bar_get_preferred_width (GtkWidget     *widget,
  83                                               gint          *minimum,
  84                                               gint          *natural);
  85 static void gtk_menu_bar_get_preferred_height (GtkWidget    *widget,
  86                                                gint         *minimum,
  87                                                gint         *natural);
  88 static void gtk_menu_bar_get_preferred_width_for_height (GtkWidget    *widget,
  89                                                          gint          height,
  90                                                          gint         *minimum,
  91                                                          gint         *natural);
  92 static void gtk_menu_bar_get_preferred_height_for_width (GtkWidget    *widget,
  93                                                          gint          width,
  94                                                          gint         *minimum,
  95                                                          gint         *natural);
  96 static void gtk_menu_bar_size_allocate     (GtkWidget       *widget,
  97                                             GtkAllocation   *allocation);
  98 static gint gtk_menu_bar_draw              (GtkWidget       *widget,
  99                                             cairo_t         *cr);
 100 static void gtk_menu_bar_hierarchy_changed (GtkWidget       *widget,
 101                                             GtkWidget       *old_toplevel);
 102 static gint gtk_menu_bar_get_popup_delay   (GtkMenuShell    *menu_shell);
 103 static void gtk_menu_bar_move_current      (GtkMenuShell     *menu_shell,
 104                                             GtkMenuDirectionType direction);
 105
 106 static GtkShadowType get_shadow_type   (GtkMenuBar      *menubar);
 107
 108 G_DEFINE_TYPE (GtkMenuBar, gtk_menu_bar, GTK_TYPE_MENU_SHELL)
 109
 110 static void
 111 gtk_menu_bar_class_init (GtkMenuBarClass *class)
 112 {
 113   GObjectClass *gobject_class;
 114   GtkWidgetClass *widget_class;
 115   GtkMenuShellClass *menu_shell_class;
 116
 117   GtkBindingSet *binding_set;
 118
 119   gobject_class = (GObjectClass*) class;
 120   widget_class = (GtkWidgetClass*) class;
 121   menu_shell_class = (GtkMenuShellClass*) class;
 122
 123   gobject_class->get_property = gtk_menu_bar_get_property;
 124   gobject_class->set_property = gtk_menu_bar_set_property;
 125
 126   widget_class->get_preferred_width = gtk_menu_bar_get_preferred_width;
 127   widget_class->get_preferred_height = gtk_menu_bar_get_preferred_height;
 128   widget_class->get_preferred_width_for_height = gtk_menu_bar_get_preferred_width_for_height;
 129   widget_class->get_preferred_height_for_width = gtk_menu_bar_get_preferred_height_for_width;
 130   widget_class->size_allocate = gtk_menu_bar_size_allocate;
 131   widget_class->draw = gtk_menu_bar_draw;
 132   widget_class->hierarchy_changed = gtk_menu_bar_hierarchy_changed;
 133
 134   menu_shell_class->submenu_placement = GTK_TOP_BOTTOM;
 135   menu_shell_class->get_popup_delay = gtk_menu_bar_get_popup_delay;
 136   menu_shell_class->move_current = gtk_menu_bar_move_current;
 137
 138   binding_set = gtk_binding_set_by_class (class);
 139   gtk_binding_entry_add_signal (binding_set,
 140                                 GDK_KEY_Left, 0,
 141                                 "move-current", 1,
 142                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 143                                 GTK_MENU_DIR_PREV);
 144   gtk_binding_entry_add_signal (binding_set,
 145                                 GDK_KEY_KP_Left, 0,
 146                                 "move-current", 1,
 147                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 148                                 GTK_MENU_DIR_PREV);
 149   gtk_binding_entry_add_signal (binding_set,
 150                                 GDK_KEY_Right, 0,
 151                                 "move-current", 1,
 152                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 153                                 GTK_MENU_DIR_NEXT);
 154   gtk_binding_entry_add_signal (binding_set,
 155                                 GDK_KEY_KP_Right, 0,
 156                                 "move-current", 1,
 157                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 158                                 GTK_MENU_DIR_NEXT);
 159   gtk_binding_entry_add_signal (binding_set,
 160                                 GDK_KEY_Up, 0,
 161                                 "move-current", 1,
 162                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 163                                 GTK_MENU_DIR_PARENT);
 164   gtk_binding_entry_add_signal (binding_set,
 165                                 GDK_KEY_KP_Up, 0,
 166                                 "move-current", 1,
 167                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 168                                 GTK_MENU_DIR_PARENT);
 169   gtk_binding_entry_add_signal (binding_set,
 170                                 GDK_KEY_Down, 0,
 171                                 "move-current", 1,
 172                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 173                                 GTK_MENU_DIR_CHILD);
 174   gtk_binding_entry_add_signal (binding_set,
 175                                 GDK_KEY_KP_Down, 0,
 176                                 "move-current", 1,
 177                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 178                                 GTK_MENU_DIR_CHILD);
 179
 180   /**
 181    * GtkMenuBar:pack-direction:
 182    *
 183    * The pack direction of the menubar. It determines how
 184    * menuitems are arranged in the menubar.
 185    *
 186    * Since: 2.8
 187    */
 188   g_object_class_install_property (gobject_class,
 189                                    PROP_PACK_DIRECTION,
 190                                    g_param_spec_enum ("pack-direction",
 191                                                       P_("Pack direction"),
 192                                                       P_("The pack direction of the menubar"),
 193                                                       GTK_TYPE_PACK_DIRECTION,
 194                                                       GTK_PACK_DIRECTION_LTR,
 195                                                       GTK_PARAM_READWRITE));
 196
 197   /**
 198    * GtkMenuBar:child-pack-direction:
 199    *
 200    * The child pack direction of the menubar. It determines how
 201    * the widgets contained in child menuitems are arranged.
 202    *
 203    * Since: 2.8
 204    */
 205   g_object_class_install_property (gobject_class,
 206                                    PROP_CHILD_PACK_DIRECTION,
 207                                    g_param_spec_enum ("child-pack-direction",
 208                                                       P_("Child Pack direction"),
 209                                                       P_("The child pack direction of the menubar"),
 210                                                       GTK_TYPE_PACK_DIRECTION,
 211                                                       GTK_PACK_DIRECTION_LTR,
 212                                                       GTK_PARAM_READWRITE));
 213
 214
 215   gtk_widget_class_install_style_property (widget_class,
 216                                            g_param_spec_enum ("shadow-type",
 217                                                               P_("Shadow type"),
 218                                                               P_("Style of bevel around the menubar"),
 219                                                               GTK_TYPE_SHADOW_TYPE,
 220                                                               GTK_SHADOW_OUT,
 221                                                               GTK_PARAM_READABLE));
 222
 223   gtk_widget_class_install_style_property (widget_class,
 224                                            g_param_spec_int ("internal-padding",
 225                                                              P_("Internal padding"),
 226                                                              P_("Amount of border space between the menubar shadow and the menu items"),
 227                                                              0,
 228                                                              G_MAXINT,
 229                                                              DEFAULT_IPADDING,
 230                                                              GTK_PARAM_READABLE));
 231
 232   g_type_class_add_private (gobject_class, sizeof (GtkMenuBarPrivate));
 233
 234   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_MENU_SHELL_ACCESSIBLE);
 235 }
 236
 237 static void
 238 gtk_menu_bar_init (GtkMenuBar *menu_bar)
 239 {
 240   GtkStyleContext *context;
 241
 242   menu_bar->priv = G_TYPE_INSTANCE_GET_PRIVATE (menu_bar,
 243                                                 GTK_TYPE_MENU_BAR,
 244                                                 GtkMenuBarPrivate);
 245
 246   context = gtk_widget_get_style_context (GTK_WIDGET (menu_bar));
 247   gtk_style_context_add_class (context, GTK_STYLE_CLASS_MENUBAR);
 248 }
 249
 250 /**
 251  * gtk_menu_bar_new:
 252  *
 253  * Creates a new #GtkMenuBar
 254  *
 255  * Returns: the new menu bar, as a #GtkWidget
 256  */
 257 GtkWidget*
 258 gtk_menu_bar_new (void)
 259 {
 260   return g_object_new (GTK_TYPE_MENU_BAR, NULL);
 261 }
 262
 263 static void
 264 gtk_menu_bar_set_property (GObject      *object,
 265                            guint         prop_id,
 266                            const GValue *value,
 267                            GParamSpec   *pspec)
 268 {
 269   GtkMenuBar *menubar = GTK_MENU_BAR (object);
 270
 271   switch (prop_id)
 272     {
 273     case PROP_PACK_DIRECTION:
 274       gtk_menu_bar_set_pack_direction (menubar, g_value_get_enum (value));
 275       break;
 276     case PROP_CHILD_PACK_DIRECTION:
 277       gtk_menu_bar_set_child_pack_direction (menubar, g_value_get_enum (value));
 278       break;
 279     default:
 280       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 281       break;
 282     }
 283 }
 284
 285 static void
 286 gtk_menu_bar_get_property (GObject    *object,
 287                            guint       prop_id,
 288                            GValue     *value,
 289                            GParamSpec *pspec)
 290 {
 291   GtkMenuBar *menubar = GTK_MENU_BAR (object);
 292
 293   switch (prop_id)
 294     {
 295     case PROP_PACK_DIRECTION:
 296       g_value_set_enum (value, gtk_menu_bar_get_pack_direction (menubar));
 297       break;
 298     case PROP_CHILD_PACK_DIRECTION:
 299       g_value_set_enum (value, gtk_menu_bar_get_child_pack_direction (menubar));
 300       break;
 301     default:
 302       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 303       break;
 304     }
 305 }
 306
 307 static void
 308 get_preferred_size_for_size (GtkWidget      *widget,
 309                              GtkOrientation  orientation,
 310                              gint            size,
 311                              gint           *minimum,
 312                              gint           *natural)
 313 {
 314   if (orientation == GTK_ORIENTATION_HORIZONTAL)
 315     if (size < 0)
 316       gtk_widget_get_preferred_width (widget, minimum, natural);
 317     else
 318       gtk_widget_get_preferred_width_for_height (widget, size, minimum, natural);
 319   else
 320     if (size < 0)
 321       gtk_widget_get_preferred_height (widget, minimum, natural);
 322     else
 323       gtk_widget_get_preferred_height_for_width (widget, size, minimum, natural);
 324 }
 325
 326 static void
 327 gtk_menu_bar_size_request (GtkWidget      *widget,
 328                            GtkOrientation  orientation,
 329                            gint            size,
 330                            gint           *minimum,
 331                            gint           *natural)
 332 {
 333   GtkMenuBar *menu_bar;
 334   GtkMenuBarPrivate *priv;
 335   GtkMenuShell *menu_shell;
 336   GtkWidget *child;
 337   GList *children;
 338   gint ipadding;
 339   guint border_width;
 340   gboolean use_toggle_size, use_maximize;
 341   gint child_minimum, child_natural;
 342
 343   *minimum = 0;
 344   *natural = 0;
 345
 346   menu_bar = GTK_MENU_BAR (widget);
 347   menu_shell = GTK_MENU_SHELL (widget);
 348   priv = menu_bar->priv;
 349
 350   children = menu_shell->priv->children;
 351
 352   if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
 353       priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
 354     use_toggle_size = (orientation == GTK_ORIENTATION_HORIZONTAL);
 355   else
 356     use_toggle_size = (orientation == GTK_ORIENTATION_VERTICAL);
 357
 358   if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
 359       priv->pack_direction == GTK_PACK_DIRECTION_RTL)
 360     use_maximize = (orientation == GTK_ORIENTATION_VERTICAL);
 361   else
 362     use_maximize = (orientation == GTK_ORIENTATION_HORIZONTAL);
 363
 364   while (children)
 365     {
 366       child = children->data;
 367       children = children->next;
 368
 369       if (gtk_widget_get_visible (child))
 370         {
 371           get_preferred_size_for_size (child, orientation, size, &child_minimum, &child_natural);
 372
 373           if (use_toggle_size)
 374             {
 375               gint toggle_size;
 376
 377               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 378                                                  &toggle_size);
 379
 380               child_minimum += toggle_size;
 381               child_natural += toggle_size;
 382             }
 383
 384           if (use_maximize)
 385             {
 386               *minimum = MAX (*minimum, child_minimum);
 387               *natural = MAX (*natural, child_natural);
 388             }
 389           else
 390             {
 391               *minimum += child_minimum;
 392               *natural += child_natural;
 393             }
 394         }
 395     }
 396
 397   gtk_widget_style_get (widget, "internal-padding", &ipadding, NULL);
 398   border_width = gtk_container_get_border_width (GTK_CONTAINER (menu_bar));
 399   *minimum += (border_width + ipadding + BORDER_SPACING) * 2;
 400   *natural += (border_width + ipadding + BORDER_SPACING) * 2;
 401
 402   if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
 403     {
 404       GtkStyleContext *context;
 405       GtkBorder border;
 406
 407       context = gtk_widget_get_style_context (widget);
 408       gtk_style_context_get_border (context, gtk_widget_get_state_flags (widget),
 409                                     &border);
 410
 411       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 412         {
 413           *minimum += border.left + border.right;
 414           *natural += border.left + border.right;
 415         }
 416       else
 417         {
 418           *minimum += border.top + border.bottom;
 419           *natural += border.top + border.bottom;
 420         }
 421     }
 422 }
 423
 424 static void
 425 gtk_menu_bar_get_preferred_width (GtkWidget *widget,
 426                                   gint      *minimum,
 427                                   gint      *natural)
 428 {
 429   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_HORIZONTAL, -1, minimum, natural);
 430 }
 431
 432 static void
 433 gtk_menu_bar_get_preferred_height (GtkWidget *widget,
 434                                    gint      *minimum,
 435                                    gint      *natural)
 436 {
 437   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_VERTICAL, -1, minimum, natural);
 438 }
 439
 440 static void
 441 gtk_menu_bar_get_preferred_width_for_height (GtkWidget *widget,
 442                                              gint       height,
 443                                              gint      *minimum,
 444                                              gint      *natural)
 445 {
 446   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_HORIZONTAL, height, minimum, natural);
 447 }
 448
 449 static void
 450 gtk_menu_bar_get_preferred_height_for_width (GtkWidget *widget,
 451                                              gint       width,
 452                                              gint      *minimum,
 453                                              gint      *natural)
 454 {
 455   gtk_menu_bar_size_request (widget, GTK_ORIENTATION_VERTICAL, width, minimum, natural);
 456 }
 457
 458 static void
 459 gtk_menu_bar_size_allocate (GtkWidget     *widget,
 460                             GtkAllocation *allocation)
 461 {
 462   GtkMenuBar *menu_bar;
 463   GtkMenuShell *menu_shell;
 464   GtkMenuBarPrivate *priv;
 465   GtkWidget *child;
 466   GList *children;
 467   GtkAllocation remaining_space;
 468   gint ipadding;
 469   guint border_width;
 470   GArray *requested_sizes;
 471   gint toggle_size;
 472   guint i;
 473
 474   g_return_if_fail (GTK_IS_MENU_BAR (widget));
 475   g_return_if_fail (allocation != NULL);
 476
 477   menu_bar = GTK_MENU_BAR (widget);
 478   menu_shell = GTK_MENU_SHELL (widget);
 479   priv = menu_bar->priv;
 480
 481   gtk_widget_set_allocation (widget, allocation);
 482
 483   if (gtk_widget_get_realized (widget))
 484     gdk_window_move_resize (gtk_widget_get_window (widget),
 485                             allocation->x, allocation->y,
 486                             allocation->width, allocation->height);
 487
 488   if (menu_shell->priv->children)
 489     {
 490       gtk_widget_style_get (widget, "internal-padding", &ipadding, NULL);
 491
 492       border_width = gtk_container_get_border_width (GTK_CONTAINER (menu_bar));
 493       remaining_space.x = (border_width +
 494                             ipadding +
 495                             BORDER_SPACING);
 496       remaining_space.y = (border_width +
 497                             ipadding +
 498                             BORDER_SPACING);
 499       remaining_space.width = allocation->width -
 500                                2 * (border_width + ipadding + BORDER_SPACING);
 501       remaining_space.height = allocation->height -
 502                                 2 * (border_width + ipadding + BORDER_SPACING);
 503
 504       if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
 505         {
 506           GtkStyleContext *context;
 507           GtkBorder border;
 508
 509           context = gtk_widget_get_style_context (widget);
 510           gtk_style_context_get_border (context, gtk_widget_get_state_flags (widget),
 511                                         &border);
 512
 513           remaining_space.x += border.left;
 514           remaining_space.y += border.top;
 515           remaining_space.width -= border.left + border.right;
 516           remaining_space.height -= border.top + border.bottom;
 517         }
 518
 519       requested_sizes = g_array_new (FALSE, FALSE, sizeof (GtkRequestedSize));
 520
 521       if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
 522           priv->pack_direction == GTK_PACK_DIRECTION_RTL)
 523         {
 524           int size = remaining_space.width;
 525           gboolean ltr = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR) == (priv->pack_direction == GTK_PACK_DIRECTION_LTR);
 526
 527           for (children = menu_shell->priv->children; children; children = children->next)
 528             {
 529               GtkRequestedSize request;
 530               child = children->data;
 531
 532               if (!gtk_widget_get_visible (child))
 533                 continue;
 534
 535               request.data = child;
 536               gtk_widget_get_preferred_width_for_height (child,
 537                                                          remaining_space.height,
 538                                                          &request.minimum_size,
 539                                                          &request.natural_size);
 540               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 541                                                  &toggle_size);
 542               request.minimum_size += toggle_size;
 543               request.natural_size += toggle_size;
 544
 545               gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child), toggle_size);
 546
 547               g_array_append_val (requested_sizes, request);
 548
 549               size -= request.minimum_size;
 550             }
 551
 552           size = gtk_distribute_natural_allocation (size,
 553                                                     requested_sizes->len,
 554                                                     (GtkRequestedSize *) requested_sizes->data);
 555
 556           for (i = 0; i < requested_sizes->len; i++)
 557             {
 558               GtkAllocation child_allocation = remaining_space;
 559               GtkRequestedSize *request = &g_array_index (requested_sizes, GtkRequestedSize, i);
 560
 561               child_allocation.width = request->minimum_size;
 562               remaining_space.width -= request->minimum_size;
 563
 564               if (i + 1 == requested_sizes->len && GTK_IS_MENU_ITEM (request->data) &&
 565                   GTK_MENU_ITEM (request->data)->priv->right_justify)
 566                 ltr = !ltr;
 567
 568               if (ltr)
 569                 remaining_space.x += request->minimum_size;
 570               else
 571                 child_allocation.x += remaining_space.width;
 572
 573               gtk_widget_size_allocate (request->data, &child_allocation);
 574             }
 575         }
 576       else
 577         {
 578           int size = remaining_space.height;
 579           gboolean ttb = (priv->pack_direction == GTK_PACK_DIRECTION_TTB);
 580
 581           for (children = menu_shell->priv->children; children; children = children->next)
 582             {
 583               GtkRequestedSize request;
 584               child = children->data;
 585
 586               if (!gtk_widget_get_visible (child))
 587                 continue;
 588
 589               request.data = child;
 590               gtk_widget_get_preferred_height_for_width (child,
 591                                                          remaining_space.width,
 592                                                          &request.minimum_size,
 593                                                          &request.natural_size);
 594               gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
 595                                                  &toggle_size);
 596               request.minimum_size += toggle_size;
 597               request.natural_size += toggle_size;
 598
 599               gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child), toggle_size);
 600
 601               g_array_append_val (requested_sizes, request);
 602
 603               size -= request.minimum_size;
 604             }
 605
 606           size = gtk_distribute_natural_allocation (size,
 607                                                     requested_sizes->len,
 608                                                     (GtkRequestedSize *) requested_sizes->data);
 609
 610           for (i = 0; i < requested_sizes->len; i++)
 611             {
 612               GtkAllocation child_allocation = remaining_space;
 613               GtkRequestedSize *request = &g_array_index (requested_sizes, GtkRequestedSize, i);
 614
 615               child_allocation.height = request->minimum_size;
 616               remaining_space.height -= request->minimum_size;
 617
 618               if (i + 1 == requested_sizes->len && GTK_IS_MENU_ITEM (request->data) &&
 619                   GTK_MENU_ITEM (request->data)->priv->right_justify)
 620                 ttb = !ttb;
 621
 622               if (ttb)
 623                 remaining_space.y += request->minimum_size;
 624               else
 625                 child_allocation.y += remaining_space.height;
 626
 627               gtk_widget_size_allocate (request->data, &child_allocation);
 628             }
 629         }
 630
 631       g_array_free (requested_sizes, TRUE);
 632     }
 633 }
 634
 635 static gint
 636 gtk_menu_bar_draw (GtkWidget *widget,
 637                    cairo_t   *cr)
 638 {
 639   GtkStyleContext *context;
 640   GtkStateFlags state;
 641   int border;
 642
 643   border = gtk_container_get_border_width (GTK_CONTAINER (widget));
 644   context = gtk_widget_get_style_context (widget);
 645
 646   state = gtk_widget_get_state_flags (widget);
 647   gtk_style_context_set_state (context, state);
 648
 649   if (get_shadow_type (GTK_MENU_BAR (widget)) != GTK_SHADOW_NONE)
 650     gtk_render_background (context, cr,
 651                            border, border,
 652                            gtk_widget_get_allocated_width (widget) - border * 2,
 653                            gtk_widget_get_allocated_height (widget) - border * 2);
 654
 655   gtk_render_frame (context, cr,
 656                     border, border,
 657                     gtk_widget_get_allocated_width (widget) - border * 2,
 658                     gtk_widget_get_allocated_height (widget) - border * 2);
 659
 660   GTK_WIDGET_CLASS (gtk_menu_bar_parent_class)->draw (widget, cr);
 661
 662   return FALSE;
 663 }
 664
 665 static GList *
 666 get_menu_bars (GtkWindow *window)
 667 {
 668   return g_object_get_data (G_OBJECT (window), "gtk-menu-bar-list");
 669 }
 670
 671 static GList *
 672 get_viewable_menu_bars (GtkWindow *window)
 673 {
 674   GList *menu_bars;
 675   GList *viewable_menu_bars = NULL;
 676
 677   for (menu_bars = get_menu_bars (window);
 678        menu_bars;
 679        menu_bars = menu_bars->next)
 680     {
 681       GtkWidget *widget = menu_bars->data;
 682       gboolean viewable = TRUE;
 683
 684       while (widget)
 685         {
 686           if (!gtk_widget_get_mapped (widget))
 687             viewable = FALSE;
 688
 689           widget = gtk_widget_get_parent (widget);
 690         }
 691
 692       if (viewable)
 693         viewable_menu_bars = g_list_prepend (viewable_menu_bars, menu_bars->data);
 694     }
 695
 696   return g_list_reverse (viewable_menu_bars);
 697 }
 698
 699 static void
 700 set_menu_bars (GtkWindow *window,
 701                GList     *menubars)
 702 {
 703   g_object_set_data (G_OBJECT (window), I_("gtk-menu-bar-list"), menubars);
 704 }
 705
 706 static gboolean
 707 window_key_press_handler (GtkWidget   *widget,
 708                           GdkEventKey *event,
 709                           gpointer     data)
 710 {
 711   gchar *accel = NULL;
 712   gboolean retval = FALSE;
 713
 714   g_object_get (gtk_widget_get_settings (widget),
 715                 "gtk-menu-bar-accel", &accel,
 716                 NULL);
 717
 718   if (accel && *accel)
 719     {
 720       guint keyval = 0;
 721       GdkModifierType mods = 0;
 722
 723       gtk_accelerator_parse (accel, &keyval, &mods);
 724
 725       if (keyval == 0)
 726         g_warning ("Failed to parse menu bar accelerator '%s'\n", accel);
 727
 728       /* FIXME this is wrong, needs to be in the global accel resolution
 729        * thing, to properly consider i18n etc., but that probably requires
 730        * AccelGroup changes etc.
 731        */
 732       if (event->keyval == keyval &&
 733           ((event->state & gtk_accelerator_get_default_mod_mask ()) ==
 734            (mods & gtk_accelerator_get_default_mod_mask ())))
 735         {
 736           GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (widget));
 737           GList *menubars;
 738
 739           menubars = _gtk_container_focus_sort (GTK_CONTAINER (widget), tmp_menubars,
 740                                                 GTK_DIR_TAB_FORWARD, NULL);
 741           g_list_free (tmp_menubars);
 742
 743           if (menubars)
 744             {
 745               GtkMenuShell *menu_shell = GTK_MENU_SHELL (menubars->data);
 746
 747               _gtk_menu_shell_set_keyboard_mode (menu_shell, TRUE);
 748               gtk_menu_shell_select_first (menu_shell, FALSE);
 749
 750               g_list_free (menubars);
 751
 752               retval = TRUE;
 753             }
 754         }
 755     }
 756
 757   g_free (accel);
 758
 759   return retval;
 760 }
 761
 762 static void
 763 add_to_window (GtkWindow  *window,
 764                GtkMenuBar *menubar)
 765 {
 766   GList *menubars = get_menu_bars (window);
 767
 768   if (!menubars)
 769     {
 770       g_signal_connect (window,
 771                         "key-press-event",
 772                         G_CALLBACK (window_key_press_handler),
 773                         NULL);
 774     }
 775
 776   set_menu_bars (window, g_list_prepend (menubars, menubar));
 777 }
 778
 779 static void
 780 remove_from_window (GtkWindow  *window,
 781                     GtkMenuBar *menubar)
 782 {
 783   GList *menubars = get_menu_bars (window);
 784
 785   menubars = g_list_remove (menubars, menubar);
 786
 787   if (!menubars)
 788     {
 789       g_signal_handlers_disconnect_by_func (window,
 790                                             window_key_press_handler,
 791                                             NULL);
 792     }
 793
 794   set_menu_bars (window, menubars);
 795 }
 796
 797 static void
 798 gtk_menu_bar_hierarchy_changed (GtkWidget *widget,
 799                                 GtkWidget *old_toplevel)
 800 {
 801   GtkWidget *toplevel;
 802   GtkMenuBar *menubar;
 803
 804   menubar = GTK_MENU_BAR (widget);
 805
 806   toplevel = gtk_widget_get_toplevel (widget);
 807
 808   if (old_toplevel)
 809     remove_from_window (GTK_WINDOW (old_toplevel), menubar);
 810
 811   if (gtk_widget_is_toplevel (toplevel))
 812     add_to_window (GTK_WINDOW (toplevel), menubar);
 813 }
 814
 815 /**
 816  * _gtk_menu_bar_cycle_focus:
 817  * @menubar: a #GtkMenuBar
 818  * @dir: direction in which to cycle the focus
 819  *
 820  * Move the focus between menubars in the toplevel.
 821  **/
 822 void
 823 _gtk_menu_bar_cycle_focus (GtkMenuBar       *menubar,
 824                            GtkDirectionType  dir)
 825 {
 826   GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (menubar));
 827   GtkMenuItem *to_activate = NULL;
 828
 829   if (gtk_widget_is_toplevel (toplevel))
 830     {
 831       GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (toplevel));
 832       GList *menubars;
 833       GList *current;
 834
 835       menubars = _gtk_container_focus_sort (GTK_CONTAINER (toplevel), tmp_menubars,
 836                                             dir, GTK_WIDGET (menubar));
 837       g_list_free (tmp_menubars);
 838
 839       if (menubars)
 840         {
 841           current = g_list_find (menubars, menubar);
 842
 843           if (current && current->next)
 844             {
 845               GtkMenuShell *new_menushell = GTK_MENU_SHELL (current->next->data);
 846               if (new_menushell->priv->children)
 847                 to_activate = new_menushell->priv->children->data;
 848             }
 849         }
 850
 851       g_list_free (menubars);
 852     }
 853
 854   gtk_menu_shell_cancel (GTK_MENU_SHELL (menubar));
 855
 856   if (to_activate)
 857     g_signal_emit_by_name (to_activate, "activate_item");
 858 }
 859
 860 static GtkShadowType
 861 get_shadow_type (GtkMenuBar *menubar)
 862 {
 863   GtkShadowType shadow_type = GTK_SHADOW_OUT;
 864
 865   gtk_widget_style_get (GTK_WIDGET (menubar),
 866                         "shadow-type", &shadow_type,
 867                         NULL);
 868
 869   return shadow_type;
 870 }
 871
 872 static gint
 873 gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell)
 874 {
 875   gint popup_delay;
 876
 877   g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
 878                 "gtk-menu-bar-popup-delay", &popup_delay,
 879                 NULL);
 880
 881   return popup_delay;
 882 }
 883
 884 static void
 885 gtk_menu_bar_move_current (GtkMenuShell         *menu_shell,
 886                            GtkMenuDirectionType  direction)
 887 {
 888   GtkMenuBar *menubar = GTK_MENU_BAR (menu_shell);
 889   GtkTextDirection text_dir;
 890   GtkPackDirection pack_dir;
 891
 892   text_dir = gtk_widget_get_direction (GTK_WIDGET (menubar));
 893   pack_dir = gtk_menu_bar_get_pack_direction (menubar);
 894
 895   if (pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL)
 896      {
 897       if ((text_dir == GTK_TEXT_DIR_RTL) == (pack_dir == GTK_PACK_DIRECTION_LTR))
 898         {
 899           switch (direction)
 900             {
 901             case GTK_MENU_DIR_PREV:
 902               direction = GTK_MENU_DIR_NEXT;
 903               break;
 904             case GTK_MENU_DIR_NEXT:
 905               direction = GTK_MENU_DIR_PREV;
 906               break;
 907             default: ;
 908             }
 909         }
 910     }
 911   else
 912     {
 913       switch (direction)
 914         {
 915         case GTK_MENU_DIR_PARENT:
 916           if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
 917             direction = GTK_MENU_DIR_PREV;
 918           else
 919             direction = GTK_MENU_DIR_NEXT;
 920           break;
 921         case GTK_MENU_DIR_CHILD:
 922           if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
 923             direction = GTK_MENU_DIR_NEXT;
 924           else
 925             direction = GTK_MENU_DIR_PREV;
 926           break;
 927         case GTK_MENU_DIR_PREV:
 928           if (text_dir == GTK_TEXT_DIR_RTL)
 929             direction = GTK_MENU_DIR_CHILD;
 930           else
 931             direction = GTK_MENU_DIR_PARENT;
 932           break;
 933         case GTK_MENU_DIR_NEXT:
 934           if (text_dir == GTK_TEXT_DIR_RTL)
 935             direction = GTK_MENU_DIR_PARENT;
 936           else
 937             direction = GTK_MENU_DIR_CHILD;
 938           break;
 939         default: ;
 940         }
 941     }
 942
 943   GTK_MENU_SHELL_CLASS (gtk_menu_bar_parent_class)->move_current (menu_shell, direction);
 944 }
 945
 946 /**
 947  * gtk_menu_bar_get_pack_direction:
 948  * @menubar: a #GtkMenuBar
 949  *
 950  * Retrieves the current pack direction of the menubar.
 951  * See gtk_menu_bar_set_pack_direction().
 952  *
 953  * Return value: the pack direction
 954  *
 955  * Since: 2.8
 956  */
 957 GtkPackDirection
 958 gtk_menu_bar_get_pack_direction (GtkMenuBar *menubar)
 959 {
 960   g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
 961                         GTK_PACK_DIRECTION_LTR);
 962
 963   return menubar->priv->pack_direction;
 964 }
 965
 966 /**
 967  * gtk_menu_bar_set_pack_direction:
 968  * @menubar: a #GtkMenuBar
 969  * @pack_dir: a new #GtkPackDirection
 970  *
 971  * Sets how items should be packed inside a menubar.
 972  *
 973  * Since: 2.8
 974  */
 975 void
 976 gtk_menu_bar_set_pack_direction (GtkMenuBar       *menubar,
 977                                  GtkPackDirection  pack_dir)
 978 {
 979   GtkMenuBarPrivate *priv;
 980   GList *l;
 981
 982   g_return_if_fail (GTK_IS_MENU_BAR (menubar));
 983
 984   priv = menubar->priv;
 985
 986   if (priv->pack_direction != pack_dir)
 987     {
 988       priv->pack_direction = pack_dir;
 989
 990       gtk_widget_queue_resize (GTK_WIDGET (menubar));
 991
 992       for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
 993         gtk_widget_queue_resize (GTK_WIDGET (l->data));
 994
 995       g_object_notify (G_OBJECT (menubar), "pack-direction");
 996     }
 997 }
 998
 999 /**
1000  * gtk_menu_bar_get_child_pack_direction:
1001  * @menubar: a #GtkMenuBar
1002  *
1003  * Retrieves the current child pack direction of the menubar.
1004  * See gtk_menu_bar_set_child_pack_direction().
1005  *
1006  * Return value: the child pack direction
1007  *
1008  * Since: 2.8
1009  */
1010 GtkPackDirection
1011 gtk_menu_bar_get_child_pack_direction (GtkMenuBar *menubar)
1012 {
1013   g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
1014                         GTK_PACK_DIRECTION_LTR);
1015
1016   return menubar->priv->child_pack_direction;
1017 }
1018
1019 /**
1020  * gtk_menu_bar_set_child_pack_direction:
1021  * @menubar: a #GtkMenuBar
1022  * @child_pack_dir: a new #GtkPackDirection
1023  *
1024  * Sets how widgets should be packed inside the children of a menubar.
1025  *
1026  * Since: 2.8
1027  */
1028 void
1029 gtk_menu_bar_set_child_pack_direction (GtkMenuBar       *menubar,
1030                                        GtkPackDirection  child_pack_dir)
1031 {
1032   GtkMenuBarPrivate *priv;
1033   GList *l;
1034
1035   g_return_if_fail (GTK_IS_MENU_BAR (menubar));
1036
1037   priv = menubar->priv;
1038
1039   if (priv->child_pack_direction != child_pack_dir)
1040     {
1041       priv->child_pack_direction = child_pack_dir;
1042
1043       gtk_widget_queue_resize (GTK_WIDGET (menubar));
1044
1045       for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
1046         gtk_widget_queue_resize (GTK_WIDGET (l->data));
1047
1048       g_object_notify (G_OBJECT (menubar), "child-pack-direction");
1049     }
1050 }