Pileus Git - ~andy/gtk/blob - gtk/gtkoptionmenu.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Jsh 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 #include "config.h"
  28
  29 #include "gdk/gdkkeysyms.h"
  30
  31 #undef GTK_DISABLE_DEPRECATED
  32
  33 #include "gtkmenu.h"
  34 #include "gtkmenuitem.h"
  35 #include "gtkmarshalers.h"
  36 #include "gtkoptionmenu.h"
  37 #include "gtkprivate.h"
  38 #include "gtkintl.h"
  39 #include "gtkalias.h"
  40
  41 #define CHILD_LEFT_SPACING        4
  42 #define CHILD_RIGHT_SPACING       1
  43 #define CHILD_TOP_SPACING         1
  44 #define CHILD_BOTTOM_SPACING      1
  45
  46 typedef struct _GtkOptionMenuProps GtkOptionMenuProps;
  47
  48 struct _GtkOptionMenuProps
  49 {
  50   gboolean interior_focus;
  51   GtkRequisition indicator_size;
  52   GtkBorder indicator_spacing;
  53   gint focus_width;
  54   gint focus_pad;
  55 };
  56
  57 static const GtkOptionMenuProps default_props = {
  58   TRUE,
  59   { 7, 13 },
  60   { 7, 5, 2, 2 },               /* Left, right, top, bottom */
  61   1,
  62   0
  63 };
  64
  65 static void gtk_option_menu_destroy         (GtkObject          *object);
  66 static void gtk_option_menu_set_property    (GObject            *object,
  67                                              guint               prop_id,
  68                                              const GValue       *value,
  69                                              GParamSpec         *pspec);
  70 static void gtk_option_menu_get_property    (GObject            *object,
  71                                              guint               prop_id,
  72                                              GValue             *value,
  73                                              GParamSpec         *pspec);
  74 static void gtk_option_menu_size_request    (GtkWidget          *widget,
  75                                              GtkRequisition     *requisition);
  76 static void gtk_option_menu_size_allocate   (GtkWidget          *widget,
  77                                              GtkAllocation      *allocation);
  78 static void gtk_option_menu_paint           (GtkWidget          *widget,
  79                                              GdkRectangle       *area);
  80 static gint gtk_option_menu_expose          (GtkWidget          *widget,
  81                                              GdkEventExpose     *event);
  82 static gint gtk_option_menu_button_press    (GtkWidget          *widget,
  83                                              GdkEventButton     *event);
  84 static gint gtk_option_menu_key_press       (GtkWidget          *widget,
  85                                              GdkEventKey        *event);
  86 static void gtk_option_menu_selection_done  (GtkMenuShell       *menu_shell,
  87                                              GtkOptionMenu      *option_menu);
  88 static void gtk_option_menu_update_contents (GtkOptionMenu      *option_menu);
  89 static void gtk_option_menu_remove_contents (GtkOptionMenu      *option_menu);
  90 static void gtk_option_menu_calc_size       (GtkOptionMenu      *option_menu);
  91 static void gtk_option_menu_position        (GtkMenu            *menu,
  92                                              gint               *x,
  93                                              gint               *y,
  94                                              gint               *scroll_offet,
  95                                              gpointer            user_data);
  96 static void gtk_option_menu_show_all        (GtkWidget          *widget);
  97 static void gtk_option_menu_hide_all        (GtkWidget          *widget);
  98 static gboolean gtk_option_menu_mnemonic_activate (GtkWidget    *widget,
  99                                                    gboolean      group_cycling);
 100 static GType gtk_option_menu_child_type   (GtkContainer       *container);
 101 static gint gtk_option_menu_scroll_event    (GtkWidget          *widget,
 102                                              GdkEventScroll     *event);
 103
 104 enum
 105 {
 106   CHANGED,
 107   LAST_SIGNAL
 108 };
 109
 110 enum
 111 {
 112   PROP_0,
 113   PROP_MENU
 114 };
 115
 116 static guint signals[LAST_SIGNAL] = { 0 };
 117
 118 G_DEFINE_TYPE (GtkOptionMenu, gtk_option_menu, GTK_TYPE_BUTTON)
 119
 120 static void
 121 gtk_option_menu_class_init (GtkOptionMenuClass *class)
 122 {
 123   GObjectClass *gobject_class;
 124   GtkObjectClass *object_class;
 125   GtkWidgetClass *widget_class;
 126   GtkContainerClass *container_class;
 127
 128   gobject_class = (GObjectClass*) class;
 129   object_class = (GtkObjectClass*) class;
 130   widget_class = (GtkWidgetClass*) class;
 131   container_class = (GtkContainerClass*) class;
 132
 133   signals[CHANGED] =
 134     g_signal_new (I_("changed"),
 135                   G_OBJECT_CLASS_TYPE (class),
 136                   G_SIGNAL_RUN_LAST,
 137                   G_STRUCT_OFFSET (GtkOptionMenuClass, changed),
 138                   NULL, NULL,
 139                   _gtk_marshal_VOID__VOID,
 140                   G_TYPE_NONE, 0);
 141
 142   gobject_class->set_property = gtk_option_menu_set_property;
 143   gobject_class->get_property = gtk_option_menu_get_property;
 144   object_class->destroy = gtk_option_menu_destroy;
 145
 146   widget_class->size_request = gtk_option_menu_size_request;
 147   widget_class->size_allocate = gtk_option_menu_size_allocate;
 148   widget_class->expose_event = gtk_option_menu_expose;
 149   widget_class->button_press_event = gtk_option_menu_button_press;
 150   widget_class->key_press_event = gtk_option_menu_key_press;
 151   widget_class->scroll_event = gtk_option_menu_scroll_event;
 152   widget_class->show_all = gtk_option_menu_show_all;
 153   widget_class->hide_all = gtk_option_menu_hide_all;
 154   widget_class->mnemonic_activate = gtk_option_menu_mnemonic_activate;
 155
 156   container_class->child_type = gtk_option_menu_child_type;
 157
 158   g_object_class_install_property (gobject_class,
 159                                    PROP_MENU,
 160                                    g_param_spec_object ("menu",
 161                                                         P_("Menu"),
 162                                                         P_("The menu of options"),
 163                                                         GTK_TYPE_MENU,
 164                                                         GTK_PARAM_READWRITE));
 165
 166   gtk_widget_class_install_style_property (widget_class,
 167                                            g_param_spec_boxed ("indicator-size",
 168                                                                P_("Indicator Size"),
 169                                                                P_("Size of dropdown indicator"),
 170                                                                GTK_TYPE_REQUISITION,
 171                                                                GTK_PARAM_READABLE));
 172   gtk_widget_class_install_style_property (widget_class,
 173                                            g_param_spec_boxed ("indicator-spacing",
 174                                                                P_("Indicator Spacing"),
 175                                                                P_("Spacing around indicator"),
 176                                                                GTK_TYPE_BORDER,
 177                                                                GTK_PARAM_READABLE));
 178 }
 179
 180 static GType
 181 gtk_option_menu_child_type (GtkContainer       *container)
 182 {
 183   return G_TYPE_NONE;
 184 }
 185
 186 static void
 187 gtk_option_menu_init (GtkOptionMenu *option_menu)
 188 {
 189   GTK_WIDGET_SET_FLAGS (option_menu, GTK_CAN_FOCUS);
 190   GTK_WIDGET_UNSET_FLAGS (option_menu, GTK_CAN_DEFAULT | GTK_RECEIVES_DEFAULT);
 191
 192   option_menu->menu = NULL;
 193   option_menu->menu_item = NULL;
 194   option_menu->width = 0;
 195   option_menu->height = 0;
 196 }
 197
 198 GtkWidget*
 199 gtk_option_menu_new (void)
 200 {
 201   return g_object_new (GTK_TYPE_OPTION_MENU, NULL);
 202 }
 203
 204 GtkWidget*
 205 gtk_option_menu_get_menu (GtkOptionMenu *option_menu)
 206 {
 207   g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), NULL);
 208
 209   return option_menu->menu;
 210 }
 211
 212 static void
 213 gtk_option_menu_detacher (GtkWidget     *widget,
 214                           GtkMenu       *menu)
 215 {
 216   GtkOptionMenu *option_menu;
 217
 218   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 219
 220   option_menu = GTK_OPTION_MENU (widget);
 221   g_return_if_fail (option_menu->menu == (GtkWidget*) menu);
 222
 223   gtk_option_menu_remove_contents (option_menu);
 224   g_signal_handlers_disconnect_by_func (option_menu->menu,
 225                                         gtk_option_menu_selection_done,
 226                                         option_menu);
 227   g_signal_handlers_disconnect_by_func (option_menu->menu,
 228                                         gtk_option_menu_calc_size,
 229                                         option_menu);
 230
 231   option_menu->menu = NULL;
 232   g_object_notify (G_OBJECT (option_menu), "menu");
 233 }
 234
 235 void
 236 gtk_option_menu_set_menu (GtkOptionMenu *option_menu,
 237                           GtkWidget     *menu)
 238 {
 239   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 240   g_return_if_fail (GTK_IS_MENU (menu));
 241
 242   if (option_menu->menu != menu)
 243     {
 244       gtk_option_menu_remove_menu (option_menu);
 245
 246       option_menu->menu = menu;
 247       gtk_menu_attach_to_widget (GTK_MENU (menu),
 248                                  GTK_WIDGET (option_menu),
 249                                  gtk_option_menu_detacher);
 250
 251       gtk_option_menu_calc_size (option_menu);
 252
 253       g_signal_connect_after (option_menu->menu, "selection-done",
 254                               G_CALLBACK (gtk_option_menu_selection_done),
 255                               option_menu);
 256       g_signal_connect_swapped (option_menu->menu, "size_request",
 257                                 G_CALLBACK (gtk_option_menu_calc_size),
 258                                 option_menu);
 259
 260       if (GTK_WIDGET (option_menu)->parent)
 261         gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 262
 263       gtk_option_menu_update_contents (option_menu);
 264
 265       g_object_notify (G_OBJECT (option_menu), "menu");
 266     }
 267 }
 268
 269 void
 270 gtk_option_menu_remove_menu (GtkOptionMenu *option_menu)
 271 {
 272   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 273
 274   if (option_menu->menu)
 275     {
 276       if (GTK_MENU_SHELL (option_menu->menu)->active)
 277         gtk_menu_shell_cancel (GTK_MENU_SHELL (option_menu->menu));
 278
 279       gtk_menu_detach (GTK_MENU (option_menu->menu));
 280     }
 281 }
 282
 283 void
 284 gtk_option_menu_set_history (GtkOptionMenu *option_menu,
 285                              guint          index)
 286 {
 287   GtkWidget *menu_item;
 288
 289   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 290
 291   if (option_menu->menu)
 292     {
 293       gtk_menu_set_active (GTK_MENU (option_menu->menu), index);
 294       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 295
 296       if (menu_item != option_menu->menu_item)
 297         gtk_option_menu_update_contents (option_menu);
 298     }
 299 }
 300
 301 /**
 302  * gtk_option_menu_get_history:
 303  * @option_menu: a #GtkOptionMenu
 304  *
 305  * Retrieves the index of the currently selected menu item. The menu
 306  * items are numbered from top to bottom, starting with 0.
 307  *
 308  * Return value: index of the selected menu item, or -1 if there are no menu items
 309  * Deprecated: 2.4: Use #GtkComboBox instead.
 310  **/
 311 gint
 312 gtk_option_menu_get_history (GtkOptionMenu *option_menu)
 313 {
 314   GtkWidget *active_widget;
 315
 316   g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), -1);
 317
 318   if (option_menu->menu)
 319     {
 320       active_widget = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 321
 322       if (active_widget)
 323         return g_list_index (GTK_MENU_SHELL (option_menu->menu)->children,
 324                              active_widget);
 325       else
 326         return -1;
 327     }
 328   else
 329     return -1;
 330 }
 331
 332 static void
 333 gtk_option_menu_set_property (GObject            *object,
 334                               guint               prop_id,
 335                               const GValue       *value,
 336                               GParamSpec         *pspec)
 337 {
 338   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 339
 340   switch (prop_id)
 341     {
 342     case PROP_MENU:
 343       gtk_option_menu_set_menu (option_menu, g_value_get_object (value));
 344       break;
 345
 346     default:
 347       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 348       break;
 349     }
 350 }
 351
 352 static void
 353 gtk_option_menu_get_property (GObject            *object,
 354                               guint               prop_id,
 355                               GValue             *value,
 356                               GParamSpec         *pspec)
 357 {
 358   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 359
 360   switch (prop_id)
 361     {
 362     case PROP_MENU:
 363       g_value_set_object (value, option_menu->menu);
 364       break;
 365
 366     default:
 367       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 368       break;
 369     }
 370 }
 371
 372 static void
 373 gtk_option_menu_destroy (GtkObject *object)
 374 {
 375   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 376
 377   if (option_menu->menu)
 378     gtk_widget_destroy (option_menu->menu);
 379
 380   if (GTK_OBJECT_CLASS (gtk_option_menu_parent_class)->destroy)
 381     (* GTK_OBJECT_CLASS (gtk_option_menu_parent_class)->destroy) (object);
 382 }
 383
 384 static void
 385 gtk_option_menu_get_props (GtkOptionMenu       *option_menu,
 386                            GtkOptionMenuProps  *props)
 387 {
 388   GtkRequisition *indicator_size;
 389   GtkBorder *indicator_spacing;
 390
 391   gtk_widget_style_get (GTK_WIDGET (option_menu),
 392                         "indicator-size", &indicator_size,
 393                         "indicator-spacing", &indicator_spacing,
 394                         "interior-focus", &props->interior_focus,
 395                         "focus-line-width", &props->focus_width,
 396                         "focus-padding", &props->focus_pad,
 397                         NULL);
 398
 399   if (indicator_size)
 400     props->indicator_size = *indicator_size;
 401   else
 402     props->indicator_size = default_props.indicator_size;
 403
 404   if (indicator_spacing)
 405     props->indicator_spacing = *indicator_spacing;
 406   else
 407     props->indicator_spacing = default_props.indicator_spacing;
 408
 409   gtk_requisition_free (indicator_size);
 410   gtk_border_free (indicator_spacing);
 411 }
 412
 413 static void
 414 gtk_option_menu_size_request (GtkWidget      *widget,
 415                               GtkRequisition *requisition)
 416 {
 417   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
 418   GtkOptionMenuProps props;
 419   gint tmp;
 420   GtkRequisition child_requisition = { 0, 0 };
 421
 422   gtk_option_menu_get_props (option_menu, &props);
 423
 424   if (GTK_BIN (option_menu)->child && GTK_WIDGET_VISIBLE (GTK_BIN (option_menu)->child))
 425     {
 426       gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);
 427
 428       requisition->width += child_requisition.width;
 429       requisition->height += child_requisition.height;
 430     }
 431
 432   requisition->width = ((GTK_CONTAINER (widget)->border_width +
 433                          GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +
 434                         MAX (child_requisition.width, option_menu->width) +
 435                         props.indicator_size.width +
 436                         props.indicator_spacing.left + props.indicator_spacing.right +
 437                         CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);
 438   requisition->height = ((GTK_CONTAINER (widget)->border_width +
 439                           GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +
 440                          MAX (child_requisition.height, option_menu->height) +
 441                          CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);
 442
 443   tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +
 444          props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);
 445   requisition->height = MAX (requisition->height, tmp);
 446 }
 447
 448 static void
 449 gtk_option_menu_size_allocate (GtkWidget     *widget,
 450                                GtkAllocation *allocation)
 451 {
 452   GtkWidget *child;
 453   GtkButton *button = GTK_BUTTON (widget);
 454   GtkAllocation child_allocation;
 455   GtkOptionMenuProps props;
 456   gint border_width;
 457
 458   gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 459   border_width = GTK_CONTAINER (widget)->border_width;
 460
 461   widget->allocation = *allocation;
 462   if (GTK_WIDGET_REALIZED (widget))
 463     gdk_window_move_resize (button->event_window,
 464                             allocation->x + border_width, allocation->y + border_width,
 465                             allocation->width - border_width * 2, allocation->height - border_width * 2);
 466
 467   child = GTK_BIN (widget)->child;
 468   if (child && GTK_WIDGET_VISIBLE (child))
 469     {
 470       gint xthickness = GTK_WIDGET (widget)->style->xthickness;
 471       gint ythickness = GTK_WIDGET (widget)->style->ythickness;
 472
 473       child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;
 474       child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;
 475       child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -
 476                                     props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -
 477                                     CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);
 478       child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -
 479                                      CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);
 480
 481       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 482         child_allocation.x += props.indicator_size.width + props.indicator_spacing.left + props.indicator_spacing.right;
 483
 484       gtk_widget_size_allocate (child, &child_allocation);
 485     }
 486 }
 487
 488 static void
 489 gtk_option_menu_paint (GtkWidget    *widget,
 490                        GdkRectangle *area)
 491 {
 492   GdkRectangle button_area;
 493   GtkOptionMenuProps props;
 494   gint border_width;
 495   gint tab_x;
 496
 497   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 498   g_return_if_fail (area != NULL);
 499
 500   if (GTK_WIDGET_DRAWABLE (widget))
 501     {
 502       border_width = GTK_CONTAINER (widget)->border_width;
 503       gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 504
 505       button_area.x = widget->allocation.x + border_width;
 506       button_area.y = widget->allocation.y + border_width;
 507       button_area.width = widget->allocation.width - 2 * border_width;
 508       button_area.height = widget->allocation.height - 2 * border_width;
 509
 510       if (!props.interior_focus && GTK_WIDGET_HAS_FOCUS (widget))
 511         {
 512           button_area.x += props.focus_width + props.focus_pad;
 513           button_area.y += props.focus_width + props.focus_pad;
 514           button_area.width -= 2 * (props.focus_width + props.focus_pad);
 515           button_area.height -= 2 * (props.focus_width + props.focus_pad);
 516         }
 517
 518       gtk_paint_box (widget->style, widget->window,
 519                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 520                      area, widget, "optionmenu",
 521                      button_area.x, button_area.y,
 522                      button_area.width, button_area.height);
 523
 524       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 525         tab_x = button_area.x + props.indicator_spacing.right +
 526           widget->style->xthickness;
 527       else
 528         tab_x = button_area.x + button_area.width -
 529           props.indicator_size.width - props.indicator_spacing.right -
 530           widget->style->xthickness;
 531
 532       gtk_paint_tab (widget->style, widget->window,
 533                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 534                      area, widget, "optionmenutab",
 535                      tab_x,
 536                      button_area.y + (button_area.height - props.indicator_size.height) / 2,
 537                      props.indicator_size.width, props.indicator_size.height);
 538
 539       if (GTK_WIDGET_HAS_FOCUS (widget))
 540         {
 541           if (props.interior_focus)
 542             {
 543               button_area.x += widget->style->xthickness + props.focus_pad;
 544               button_area.y += widget->style->ythickness + props.focus_pad;
 545               button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +
 546                       props.indicator_spacing.left +
 547                       props.indicator_spacing.right +
 548                       props.indicator_size.width;
 549               button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);
 550               if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 551                 button_area.x += props.indicator_spacing.left +
 552                   props.indicator_spacing.right +
 553                   props.indicator_size.width;
 554             }
 555           else
 556             {
 557               button_area.x -= props.focus_width + props.focus_pad;
 558               button_area.y -= props.focus_width + props.focus_pad;
 559               button_area.width += 2 * (props.focus_width + props.focus_pad);
 560               button_area.height += 2 * (props.focus_width + props.focus_pad);
 561             }
 562
 563           gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 564                            area, widget, "button",
 565                            button_area.x,
 566                            button_area.y,
 567                            button_area.width,
 568                            button_area.height);
 569         }
 570     }
 571 }
 572
 573 static gint
 574 gtk_option_menu_expose (GtkWidget      *widget,
 575                         GdkEventExpose *event)
 576 {
 577   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 578   g_return_val_if_fail (event != NULL, FALSE);
 579
 580   if (GTK_WIDGET_DRAWABLE (widget))
 581     {
 582       gtk_option_menu_paint (widget, &event->area);
 583
 584
 585       /* The following code tries to draw the child in two places at
 586        * once. It fails miserably for several reasons
 587        *
 588        * - If the child is not no-window, removing generates
 589        *   more expose events. Bad, bad, bad.
 590        *
 591        * - Even if the child is no-window, removing it now (properly)
 592        *   clears the space where it was, so it does no good
 593        */
 594
 595 #if 0
 596       remove_child = FALSE;
 597       child = GTK_BUTTON (widget)->child;
 598
 599       if (!child)
 600         {
 601           if (!GTK_OPTION_MENU (widget)->menu)
 602             return FALSE;
 603           gtk_option_menu_update_contents (GTK_OPTION_MENU (widget));
 604           child = GTK_BUTTON (widget)->child;
 605           if (!child)
 606             return FALSE;
 607           remove_child = TRUE;
 608         }
 609
 610       child_event = *event;
 611
 612       if (GTK_WIDGET_NO_WINDOW (child) &&
 613           gtk_widget_intersect (child, &event->area, &child_event.area))
 614         gtk_widget_event (child, (GdkEvent*) &child_event);
 615
 616       if (remove_child)
 617         gtk_option_menu_remove_contents (GTK_OPTION_MENU (widget));
 618 #else
 619       if (GTK_BIN (widget)->child)
 620         gtk_container_propagate_expose (GTK_CONTAINER (widget),
 621                                         GTK_BIN (widget)->child,
 622                                         event);
 623 #endif /* 0 */
 624     }
 625
 626   return FALSE;
 627 }
 628
 629 static gint
 630 gtk_option_menu_button_press (GtkWidget      *widget,
 631                               GdkEventButton *event)
 632 {
 633   GtkOptionMenu *option_menu;
 634   GtkWidget *menu_item;
 635
 636   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 637   g_return_val_if_fail (event != NULL, FALSE);
 638
 639   option_menu = GTK_OPTION_MENU (widget);
 640
 641   if ((event->type == GDK_BUTTON_PRESS) &&
 642       (event->button == 1))
 643     {
 644       gtk_option_menu_remove_contents (option_menu);
 645       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 646                       gtk_option_menu_position, option_menu,
 647                       event->button, event->time);
 648       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 649       if (menu_item)
 650         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 651       return TRUE;
 652     }
 653
 654   return FALSE;
 655 }
 656
 657 static gint
 658 gtk_option_menu_key_press (GtkWidget   *widget,
 659                            GdkEventKey *event)
 660 {
 661   GtkOptionMenu *option_menu;
 662   GtkWidget *menu_item;
 663
 664   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 665   g_return_val_if_fail (event != NULL, FALSE);
 666
 667   option_menu = GTK_OPTION_MENU (widget);
 668
 669   switch (event->keyval)
 670     {
 671     case GDK_KP_Space:
 672     case GDK_space:
 673       gtk_option_menu_remove_contents (option_menu);
 674       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 675                       gtk_option_menu_position, option_menu,
 676                       0, event->time);
 677       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 678       if (menu_item)
 679         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 680       return TRUE;
 681     }
 682
 683   return FALSE;
 684 }
 685
 686 static void
 687 gtk_option_menu_selection_done (GtkMenuShell  *menu_shell,
 688                                 GtkOptionMenu *option_menu)
 689 {
 690   g_return_if_fail (menu_shell != NULL);
 691   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 692
 693   gtk_option_menu_update_contents (option_menu);
 694 }
 695
 696 static void
 697 gtk_option_menu_changed (GtkOptionMenu *option_menu)
 698 {
 699   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 700
 701   g_signal_emit (option_menu, signals[CHANGED], 0);
 702 }
 703
 704 static void
 705 gtk_option_menu_select_first_sensitive (GtkOptionMenu *option_menu)
 706 {
 707   if (option_menu->menu)
 708     {
 709       GList *children = GTK_MENU_SHELL (option_menu->menu)->children;
 710       gint index = 0;
 711
 712       while (children)
 713         {
 714           if (GTK_WIDGET_SENSITIVE (children->data))
 715             {
 716               gtk_option_menu_set_history (option_menu, index);
 717               return;
 718             }
 719
 720           children = children->next;
 721           index++;
 722         }
 723     }
 724 }
 725
 726 static void
 727 gtk_option_menu_item_state_changed_cb (GtkWidget      *widget,
 728                                        GtkStateType    previous_state,
 729                                        GtkOptionMenu  *option_menu)
 730 {
 731   GtkWidget *child = GTK_BIN (option_menu)->child;
 732
 733   if (child && GTK_WIDGET_SENSITIVE (child) != GTK_WIDGET_IS_SENSITIVE (widget))
 734     gtk_widget_set_sensitive (child, GTK_WIDGET_IS_SENSITIVE (widget));
 735 }
 736
 737 static void
 738 gtk_option_menu_item_destroy_cb (GtkWidget     *widget,
 739                                  GtkOptionMenu *option_menu)
 740 {
 741   GtkWidget *child = GTK_BIN (option_menu)->child;
 742
 743   if (child)
 744     {
 745       g_object_ref (child);
 746       gtk_option_menu_remove_contents (option_menu);
 747       gtk_widget_destroy (child);
 748       g_object_unref (child);
 749
 750       gtk_option_menu_select_first_sensitive (option_menu);
 751     }
 752 }
 753
 754 static void
 755 gtk_option_menu_update_contents (GtkOptionMenu *option_menu)
 756 {
 757   GtkWidget *child;
 758   GtkRequisition child_requisition;
 759
 760   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 761
 762   if (option_menu->menu)
 763     {
 764       GtkWidget *old_item = option_menu->menu_item;
 765
 766       gtk_option_menu_remove_contents (option_menu);
 767
 768       option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 769       if (option_menu->menu_item)
 770         {
 771           g_object_ref (option_menu->menu_item);
 772           child = GTK_BIN (option_menu->menu_item)->child;
 773           if (child)
 774             {
 775               if (!GTK_WIDGET_IS_SENSITIVE (option_menu->menu_item))
 776                 gtk_widget_set_sensitive (child, FALSE);
 777               gtk_widget_reparent (child, GTK_WIDGET (option_menu));
 778             }
 779
 780           g_signal_connect (option_menu->menu_item, "state_changed",
 781                             G_CALLBACK (gtk_option_menu_item_state_changed_cb), option_menu);
 782           g_signal_connect (option_menu->menu_item, "destroy",
 783                             G_CALLBACK (gtk_option_menu_item_destroy_cb), option_menu);
 784
 785           gtk_widget_size_request (child, &child_requisition);
 786           gtk_widget_size_allocate (GTK_WIDGET (option_menu),
 787                                     &(GTK_WIDGET (option_menu)->allocation));
 788
 789           if (GTK_WIDGET_DRAWABLE (option_menu))
 790             gtk_widget_queue_draw (GTK_WIDGET (option_menu));
 791         }
 792
 793       if (old_item != option_menu->menu_item)
 794         gtk_option_menu_changed (option_menu);
 795     }
 796 }
 797
 798 static void
 799 gtk_option_menu_remove_contents (GtkOptionMenu *option_menu)
 800 {
 801   GtkWidget *child;
 802
 803   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 804
 805   if (option_menu->menu_item)
 806     {
 807       child = GTK_BIN (option_menu)->child;
 808
 809       if (child)
 810         {
 811           gtk_widget_set_sensitive (child, TRUE);
 812           gtk_widget_set_state (child, GTK_STATE_NORMAL);
 813           gtk_widget_reparent (child, option_menu->menu_item);
 814         }
 815
 816       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 817                                             gtk_option_menu_item_state_changed_cb,
 818                                             option_menu);
 819       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 820                                             gtk_option_menu_item_destroy_cb,
 821                                             option_menu);
 822
 823       g_object_unref (option_menu->menu_item);
 824       option_menu->menu_item = NULL;
 825     }
 826 }
 827
 828 static void
 829 gtk_option_menu_calc_size (GtkOptionMenu *option_menu)
 830 {
 831   GtkWidget *child;
 832   GList *children;
 833   GtkRequisition child_requisition;
 834   gint old_width = option_menu->width;
 835   gint old_height = option_menu->height;
 836
 837   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 838
 839   option_menu->width = 0;
 840   option_menu->height = 0;
 841
 842   if (option_menu->menu)
 843     {
 844       children = GTK_MENU_SHELL (option_menu->menu)->children;
 845       while (children)
 846         {
 847           child = children->data;
 848           children = children->next;
 849
 850           if (GTK_WIDGET_VISIBLE (child))
 851             {
 852               GtkWidget *inner = GTK_BIN (child)->child;
 853
 854               if (inner)
 855                 {
 856                   gtk_widget_size_request (inner, &child_requisition);
 857
 858                   option_menu->width = MAX (option_menu->width, child_requisition.width);
 859                   option_menu->height = MAX (option_menu->height, child_requisition.height);
 860                 }
 861             }
 862         }
 863     }
 864
 865   if (old_width != option_menu->width || old_height != option_menu->height)
 866     gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 867 }
 868
 869 static void
 870 gtk_option_menu_position (GtkMenu  *menu,
 871                           gint     *x,
 872                           gint     *y,
 873                           gboolean *push_in,
 874                           gpointer  user_data)
 875 {
 876   GtkOptionMenu *option_menu;
 877   GtkWidget *active;
 878   GtkWidget *child;
 879   GtkWidget *widget;
 880   GtkRequisition requisition;
 881   GList *children;
 882   gint screen_width;
 883   gint menu_xpos;
 884   gint menu_ypos;
 885   gint menu_width;
 886
 887   g_return_if_fail (GTK_IS_OPTION_MENU (user_data));
 888
 889   option_menu = GTK_OPTION_MENU (user_data);
 890   widget = GTK_WIDGET (option_menu);
 891
 892   gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition);
 893   menu_width = requisition.width;
 894
 895   active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 896   gdk_window_get_origin (widget->window, &menu_xpos, &menu_ypos);
 897
 898   /* set combo box type hint for menu popup */
 899   gtk_window_set_type_hint (GTK_WINDOW (GTK_MENU (option_menu->menu)->toplevel),
 900                             GDK_WINDOW_TYPE_HINT_COMBO);
 901
 902   menu_xpos += widget->allocation.x;
 903   menu_ypos += widget->allocation.y + widget->allocation.height / 2 - 2;
 904
 905   if (active != NULL)
 906     {
 907       gtk_widget_get_child_requisition (active, &requisition);
 908       menu_ypos -= requisition.height / 2;
 909     }
 910
 911   children = GTK_MENU_SHELL (option_menu->menu)->children;
 912   while (children)
 913     {
 914       child = children->data;
 915
 916       if (active == child)
 917         break;
 918
 919       if (GTK_WIDGET_VISIBLE (child))
 920         {
 921           gtk_widget_get_child_requisition (child, &requisition);
 922           menu_ypos -= requisition.height;
 923         }
 924
 925       children = children->next;
 926     }
 927
 928   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 929     menu_xpos = menu_xpos + widget->allocation.width - menu_width;
 930
 931   /* Clamp the position on screen */
 932   screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
 933
 934   if (menu_xpos < 0)
 935     menu_xpos = 0;
 936   else if ((menu_xpos + menu_width) > screen_width)
 937     menu_xpos -= ((menu_xpos + menu_width) - screen_width);
 938
 939   *x = menu_xpos;
 940   *y = menu_ypos;
 941   *push_in = TRUE;
 942 }
 943
 944
 945 static void
 946 gtk_option_menu_show_all (GtkWidget *widget)
 947 {
 948   GtkContainer *container;
 949   GtkOptionMenu *option_menu;
 950
 951   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 952   container = GTK_CONTAINER (widget);
 953   option_menu = GTK_OPTION_MENU (widget);
 954
 955   gtk_widget_show (widget);
 956   gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
 957   if (option_menu->menu)
 958     gtk_widget_show_all (option_menu->menu);
 959   if (option_menu->menu_item)
 960     gtk_widget_show_all (option_menu->menu_item);
 961 }
 962
 963
 964 static void
 965 gtk_option_menu_hide_all (GtkWidget *widget)
 966 {
 967   GtkContainer *container;
 968
 969   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 970   container = GTK_CONTAINER (widget);
 971
 972   gtk_widget_hide (widget);
 973   gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
 974 }
 975
 976 static gboolean
 977 gtk_option_menu_mnemonic_activate (GtkWidget *widget,
 978                                    gboolean   group_cycling)
 979 {
 980   gtk_widget_grab_focus (widget);
 981   return TRUE;
 982 }
 983
 984 static gint
 985 gtk_option_menu_scroll_event (GtkWidget          *widget,
 986                               GdkEventScroll     *event)
 987 {
 988   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
 989   gint index;
 990   gint n_children;
 991   gint index_dir;
 992   GList *l;
 993   GtkMenuItem *item;
 994
 995   index = gtk_option_menu_get_history (option_menu);
 996
 997   if (index != -1)
 998     {
 999       n_children = g_list_length (GTK_MENU_SHELL (option_menu->menu)->children);
1000
1001       if (event->direction == GDK_SCROLL_UP)
1002         index_dir = -1;
1003       else
1004         index_dir = 1;
1005
1006
1007       while (TRUE)
1008         {
1009           index += index_dir;
1010
1011           if (index < 0)
1012             break;
1013           if (index >= n_children)
1014             break;
1015
1016           l = g_list_nth (GTK_MENU_SHELL (option_menu->menu)->children, index);
1017           item = GTK_MENU_ITEM (l->data);
1018           if (GTK_WIDGET_VISIBLE (item) && GTK_WIDGET_IS_SENSITIVE (item))
1019             {
1020               gtk_option_menu_set_history (option_menu, index);
1021               gtk_menu_item_activate (GTK_MENU_ITEM (item));
1022               break;
1023             }
1024
1025         }
1026     }
1027
1028   return TRUE;
1029 }
1030
1031 #define __GTK_OPTION_MENU_C__
1032 #include "gtkaliasdef.c"
1033