Pileus Git - ~andy/gtk/blob - gtk/gtkoptionmenu.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 #include "gtkintl.h"
  28 #include "gtkmenu.h"
  29 #include "gtkmenuitem.h"
  30 #include "gtkoptionmenu.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtksignal.h"
  33 #include "gdk/gdkkeysyms.h"
  34
  35
  36 #define CHILD_LEFT_SPACING        4
  37 #define CHILD_RIGHT_SPACING       1
  38 #define CHILD_TOP_SPACING         1
  39 #define CHILD_BOTTOM_SPACING      1
  40
  41 typedef struct _GtkOptionMenuProps GtkOptionMenuProps;
  42
  43 struct _GtkOptionMenuProps
  44 {
  45   gboolean interior_focus;
  46   GtkRequisition indicator_size;
  47   GtkBorder indicator_spacing;
  48   gint focus_width;
  49   gint focus_pad;
  50 };
  51
  52 static GtkOptionMenuProps default_props = {
  53   TRUE,
  54   { 7, 13 },
  55   { 7, 5, 2, 2 },               /* Left, right, top, bottom */
  56   1,
  57   0
  58 };
  59
  60 static void gtk_option_menu_class_init      (GtkOptionMenuClass *klass);
  61 static void gtk_option_menu_init            (GtkOptionMenu      *option_menu);
  62 static void gtk_option_menu_destroy         (GtkObject          *object);
  63 static void gtk_option_menu_set_property    (GObject            *object,
  64                                              guint               prop_id,
  65                                              const GValue       *value,
  66                                              GParamSpec         *pspec);
  67 static void gtk_option_menu_get_property    (GObject            *object,
  68                                              guint               prop_id,
  69                                              GValue             *value,
  70                                              GParamSpec         *pspec);
  71 static void gtk_option_menu_size_request    (GtkWidget          *widget,
  72                                              GtkRequisition     *requisition);
  73 static void gtk_option_menu_size_allocate   (GtkWidget          *widget,
  74                                              GtkAllocation      *allocation);
  75 static void gtk_option_menu_paint           (GtkWidget          *widget,
  76                                              GdkRectangle       *area);
  77 static gint gtk_option_menu_expose          (GtkWidget          *widget,
  78                                              GdkEventExpose     *event);
  79 static gint gtk_option_menu_button_press    (GtkWidget          *widget,
  80                                              GdkEventButton     *event);
  81 static gint gtk_option_menu_key_press       (GtkWidget          *widget,
  82                                              GdkEventKey        *event);
  83 static void gtk_option_menu_selection_done  (GtkMenuShell       *menu_shell,
  84                                              GtkOptionMenu      *option_menu);
  85 static void gtk_option_menu_update_contents (GtkOptionMenu      *option_menu);
  86 static void gtk_option_menu_remove_contents (GtkOptionMenu      *option_menu);
  87 static void gtk_option_menu_calc_size       (GtkOptionMenu      *option_menu);
  88 static void gtk_option_menu_position        (GtkMenu            *menu,
  89                                              gint               *x,
  90                                              gint               *y,
  91                                              gint               *scroll_offet,
  92                                              gpointer            user_data);
  93 static void gtk_option_menu_show_all        (GtkWidget          *widget);
  94 static void gtk_option_menu_hide_all        (GtkWidget          *widget);
  95 static gboolean gtk_option_menu_mnemonic_activate (GtkWidget    *widget,
  96                                                    gboolean      group_cycling);
  97 static GtkType gtk_option_menu_child_type   (GtkContainer       *container);
  98 static gint gtk_option_menu_scroll_event    (GtkWidget          *widget,
  99                                              GdkEventScroll     *event);
 100
 101 enum
 102 {
 103   CHANGED,
 104   LAST_SIGNAL
 105 };
 106
 107 enum
 108 {
 109   PROP_0,
 110   PROP_MENU,
 111   LAST_PROP
 112 };
 113
 114 static GtkButtonClass *parent_class = NULL;
 115 static guint           signals[LAST_SIGNAL] = { 0 };
 116
 117
 118 GtkType
 119 gtk_option_menu_get_type (void)
 120 {
 121   static GtkType option_menu_type = 0;
 122
 123   if (!option_menu_type)
 124     {
 125       static const GtkTypeInfo option_menu_info =
 126       {
 127         "GtkOptionMenu",
 128         sizeof (GtkOptionMenu),
 129         sizeof (GtkOptionMenuClass),
 130         (GtkClassInitFunc) gtk_option_menu_class_init,
 131         (GtkObjectInitFunc) gtk_option_menu_init,
 132         /* reserved_1 */ NULL,
 133         /* reserved_2 */ NULL,
 134         (GtkClassInitFunc) NULL,
 135       };
 136
 137       option_menu_type = gtk_type_unique (gtk_button_get_type (), &option_menu_info);
 138     }
 139
 140   return option_menu_type;
 141 }
 142
 143 static void
 144 gtk_option_menu_class_init (GtkOptionMenuClass *class)
 145 {
 146   GObjectClass *gobject_class;
 147   GtkObjectClass *object_class;
 148   GtkWidgetClass *widget_class;
 149   GtkButtonClass *button_class;
 150   GtkContainerClass *container_class;
 151
 152   gobject_class = (GObjectClass*) class;
 153   object_class = (GtkObjectClass*) class;
 154   widget_class = (GtkWidgetClass*) class;
 155   button_class = (GtkButtonClass*) class;
 156   container_class = (GtkContainerClass*) class;
 157
 158   parent_class = gtk_type_class (gtk_button_get_type ());
 159
 160   signals[CHANGED] =
 161     g_signal_new ("changed",
 162                   G_OBJECT_CLASS_TYPE (class),
 163                   G_SIGNAL_RUN_LAST,
 164                   G_STRUCT_OFFSET (GtkOptionMenuClass, changed),
 165                   NULL, NULL,
 166                   _gtk_marshal_VOID__VOID,
 167                   G_TYPE_NONE, 0);
 168
 169   gobject_class->set_property = gtk_option_menu_set_property;
 170   gobject_class->get_property = gtk_option_menu_get_property;
 171   object_class->destroy = gtk_option_menu_destroy;
 172
 173   widget_class->size_request = gtk_option_menu_size_request;
 174   widget_class->size_allocate = gtk_option_menu_size_allocate;
 175   widget_class->expose_event = gtk_option_menu_expose;
 176   widget_class->button_press_event = gtk_option_menu_button_press;
 177   widget_class->key_press_event = gtk_option_menu_key_press;
 178   widget_class->scroll_event = gtk_option_menu_scroll_event;
 179   widget_class->show_all = gtk_option_menu_show_all;
 180   widget_class->hide_all = gtk_option_menu_hide_all;
 181   widget_class->mnemonic_activate = gtk_option_menu_mnemonic_activate;
 182
 183   container_class->child_type = gtk_option_menu_child_type;
 184
 185   g_object_class_install_property (gobject_class,
 186                                    PROP_MENU,
 187                                    g_param_spec_object ("menu",
 188                                                         _("Menu"),
 189                                                         _("The menu of options"),
 190                                                         GTK_TYPE_MENU,
 191                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 192
 193   gtk_widget_class_install_style_property (widget_class,
 194                                            g_param_spec_boxed ("indicator_size",
 195                                                                _("Indicator Size"),
 196                                                                _("Size of dropdown indicator"),
 197                                                                GTK_TYPE_REQUISITION,
 198                                                                G_PARAM_READABLE));
 199   gtk_widget_class_install_style_property (widget_class,
 200                                            g_param_spec_boxed ("indicator_spacing",
 201                                                                _("Indicator Spacing"),
 202                                                                _("Spacing around indicator"),
 203                                                                GTK_TYPE_BORDER,
 204                                                                G_PARAM_READABLE));
 205 }
 206
 207 static GtkType
 208 gtk_option_menu_child_type (GtkContainer       *container)
 209 {
 210   return GTK_TYPE_NONE;
 211 }
 212
 213 static void
 214 gtk_option_menu_init (GtkOptionMenu *option_menu)
 215 {
 216   GTK_WIDGET_SET_FLAGS (option_menu, GTK_CAN_FOCUS);
 217   GTK_WIDGET_UNSET_FLAGS (option_menu, GTK_CAN_DEFAULT | GTK_RECEIVES_DEFAULT);
 218
 219   option_menu->menu = NULL;
 220   option_menu->menu_item = NULL;
 221   option_menu->width = 0;
 222   option_menu->height = 0;
 223 }
 224
 225 GtkWidget*
 226 gtk_option_menu_new (void)
 227 {
 228   return GTK_WIDGET (gtk_type_new (gtk_option_menu_get_type ()));
 229 }
 230
 231 GtkWidget*
 232 gtk_option_menu_get_menu (GtkOptionMenu *option_menu)
 233 {
 234   g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), NULL);
 235
 236   return option_menu->menu;
 237 }
 238
 239 static void
 240 gtk_option_menu_detacher (GtkWidget     *widget,
 241                           GtkMenu       *menu)
 242 {
 243   GtkOptionMenu *option_menu;
 244
 245   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 246
 247   option_menu = GTK_OPTION_MENU (widget);
 248   g_return_if_fail (option_menu->menu == (GtkWidget*) menu);
 249
 250   gtk_option_menu_remove_contents (option_menu);
 251   gtk_signal_disconnect_by_data (GTK_OBJECT (option_menu->menu),
 252                                  option_menu);
 253
 254   option_menu->menu = NULL;
 255   g_object_notify (G_OBJECT (option_menu), "menu");
 256 }
 257
 258 void
 259 gtk_option_menu_set_menu (GtkOptionMenu *option_menu,
 260                           GtkWidget     *menu)
 261 {
 262   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 263   g_return_if_fail (GTK_IS_MENU (menu));
 264
 265   if (option_menu->menu != menu)
 266     {
 267       gtk_option_menu_remove_menu (option_menu);
 268
 269       option_menu->menu = menu;
 270       gtk_menu_attach_to_widget (GTK_MENU (menu),
 271                                  GTK_WIDGET (option_menu),
 272                                  gtk_option_menu_detacher);
 273
 274       gtk_option_menu_calc_size (option_menu);
 275
 276       gtk_signal_connect_after (GTK_OBJECT (option_menu->menu), "selection_done",
 277                                 G_CALLBACK (gtk_option_menu_selection_done),
 278                                 option_menu);
 279       gtk_signal_connect_object (GTK_OBJECT (option_menu->menu), "size_request",
 280                                  (GtkSignalFunc) gtk_option_menu_calc_size,
 281                                  GTK_OBJECT (option_menu));
 282
 283       if (GTK_WIDGET (option_menu)->parent)
 284         gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 285
 286       gtk_option_menu_update_contents (option_menu);
 287
 288       g_object_notify (G_OBJECT (option_menu), "menu");
 289     }
 290 }
 291
 292 void
 293 gtk_option_menu_remove_menu (GtkOptionMenu *option_menu)
 294 {
 295   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 296
 297   if (option_menu->menu)
 298     gtk_menu_detach (GTK_MENU (option_menu->menu));
 299 }
 300
 301 void
 302 gtk_option_menu_set_history (GtkOptionMenu *option_menu,
 303                              guint          index)
 304 {
 305   GtkWidget *menu_item;
 306
 307   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 308
 309   if (option_menu->menu)
 310     {
 311       gtk_menu_set_active (GTK_MENU (option_menu->menu), index);
 312       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 313
 314       if (menu_item != option_menu->menu_item)
 315         gtk_option_menu_update_contents (option_menu);
 316     }
 317 }
 318
 319 /**
 320  * gtk_option_menu_get_history:
 321  * @option_menu: a #GtkOptionMenu
 322  *
 323  * Retrieves the index of the currently selected menu item. The menu
 324  * items are numbered from top to bottom, starting with 0.
 325  *
 326  * Return value: index of the selected menu item, or -1 if there are no menu items
 327  **/
 328 gint
 329 gtk_option_menu_get_history (GtkOptionMenu *option_menu)
 330 {
 331   GtkWidget *active_widget;
 332
 333   g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), -1);
 334
 335   if (option_menu->menu)
 336     {
 337       active_widget = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 338
 339       if (active_widget)
 340         return g_list_index (GTK_MENU_SHELL (option_menu->menu)->children,
 341                              active_widget);
 342       else
 343         return -1;
 344     }
 345   else
 346     return -1;
 347 }
 348
 349 static void
 350 gtk_option_menu_set_property (GObject            *object,
 351                               guint               prop_id,
 352                               const GValue       *value,
 353                               GParamSpec         *pspec)
 354 {
 355   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 356
 357   switch (prop_id)
 358     {
 359     case PROP_MENU:
 360       gtk_option_menu_set_menu (option_menu, g_value_get_object (value));
 361       break;
 362
 363     default:
 364       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 365       break;
 366     }
 367 }
 368
 369 static void
 370 gtk_option_menu_get_property (GObject            *object,
 371                               guint               prop_id,
 372                               GValue             *value,
 373                               GParamSpec         *pspec)
 374 {
 375   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 376
 377   switch (prop_id)
 378     {
 379     case PROP_MENU:
 380       g_value_set_object (value, option_menu->menu);
 381       break;
 382
 383     default:
 384       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 385       break;
 386     }
 387 }
 388
 389 static void
 390 gtk_option_menu_destroy (GtkObject *object)
 391 {
 392   GtkOptionMenu *option_menu;
 393
 394   g_return_if_fail (GTK_IS_OPTION_MENU (object));
 395
 396   option_menu = GTK_OPTION_MENU (object);
 397
 398   if (option_menu->menu)
 399     gtk_widget_destroy (option_menu->menu);
 400
 401   if (GTK_OBJECT_CLASS (parent_class)->destroy)
 402     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
 403 }
 404
 405 static void
 406 gtk_option_menu_get_props (GtkOptionMenu       *option_menu,
 407                            GtkOptionMenuProps  *props)
 408 {
 409   GtkRequisition *indicator_size;
 410   GtkBorder *indicator_spacing;
 411
 412   gtk_widget_style_get (GTK_WIDGET (option_menu),
 413                         "indicator_size", &indicator_size,
 414                         "indicator_spacing", &indicator_spacing,
 415                         "interior_focus", &props->interior_focus,
 416                         "focus_line_width", &props->focus_width,
 417                         "focus_padding", &props->focus_pad,
 418                         NULL);
 419
 420   if (indicator_size)
 421     props->indicator_size = *indicator_size;
 422   else
 423     props->indicator_size = default_props.indicator_size;
 424
 425   if (indicator_spacing)
 426     props->indicator_spacing = *indicator_spacing;
 427   else
 428     props->indicator_spacing = default_props.indicator_spacing;
 429
 430   g_free (indicator_size);
 431   g_free (indicator_spacing);
 432 }
 433
 434 static void
 435 gtk_option_menu_size_request (GtkWidget      *widget,
 436                               GtkRequisition *requisition)
 437 {
 438   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
 439   GtkOptionMenuProps props;
 440   gint tmp;
 441   GtkRequisition child_requisition = { 0, 0 };
 442
 443   gtk_option_menu_get_props (option_menu, &props);
 444
 445   if (GTK_BIN (option_menu)->child && GTK_WIDGET_VISIBLE (GTK_BIN (option_menu)->child))
 446     {
 447       gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);
 448
 449       requisition->width += child_requisition.width;
 450       requisition->height += child_requisition.height;
 451     }
 452
 453   requisition->width = ((GTK_CONTAINER (widget)->border_width +
 454                          GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +
 455                         MAX (child_requisition.width, option_menu->width) +
 456                         props.indicator_size.width +
 457                         props.indicator_spacing.left + props.indicator_spacing.right +
 458                         CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);
 459   requisition->height = ((GTK_CONTAINER (widget)->border_width +
 460                           GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +
 461                          MAX (child_requisition.height, option_menu->height) +
 462                          CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);
 463
 464   tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +
 465          props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);
 466   requisition->height = MAX (requisition->height, tmp);
 467 }
 468
 469 static void
 470 gtk_option_menu_size_allocate (GtkWidget     *widget,
 471                                GtkAllocation *allocation)
 472 {
 473   GtkWidget *child;
 474   GtkButton *button = GTK_BUTTON (widget);
 475   GtkAllocation child_allocation;
 476   GtkOptionMenuProps props;
 477   gint border_width;
 478
 479   gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 480   border_width = GTK_CONTAINER (widget)->border_width;
 481
 482   widget->allocation = *allocation;
 483   if (GTK_WIDGET_REALIZED (widget))
 484     gdk_window_move_resize (button->event_window,
 485                             allocation->x + border_width, allocation->y + border_width,
 486                             allocation->width - border_width * 2, allocation->height - border_width * 2);
 487
 488   child = GTK_BIN (widget)->child;
 489   if (child && GTK_WIDGET_VISIBLE (child))
 490     {
 491       gint xthickness = GTK_WIDGET (widget)->style->xthickness;
 492       gint ythickness = GTK_WIDGET (widget)->style->ythickness;
 493
 494       child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;
 495       child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;
 496       child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -
 497                                     props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -
 498                                     CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);
 499       child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -
 500                                      CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);
 501
 502       gtk_widget_size_allocate (child, &child_allocation);
 503     }
 504 }
 505
 506 static void
 507 gtk_option_menu_paint (GtkWidget    *widget,
 508                        GdkRectangle *area)
 509 {
 510   GdkRectangle button_area;
 511   GtkOptionMenuProps props;
 512   gint border_width;
 513
 514   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 515   g_return_if_fail (area != NULL);
 516
 517   if (GTK_WIDGET_DRAWABLE (widget))
 518     {
 519       border_width = GTK_CONTAINER (widget)->border_width;
 520       gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 521
 522       button_area.x = widget->allocation.x + border_width;
 523       button_area.y = widget->allocation.y + border_width;
 524       button_area.width = widget->allocation.width - 2 * border_width;
 525       button_area.height = widget->allocation.height - 2 * border_width;
 526
 527       if (!props.interior_focus && GTK_WIDGET_HAS_FOCUS (widget))
 528         {
 529           button_area.x += props.focus_width + props.focus_pad;
 530           button_area.y += props.focus_width + props.focus_pad;
 531           button_area.width -= 2 * (props.focus_width + props.focus_pad);
 532           button_area.height -= 2 * (props.focus_width + props.focus_pad);
 533         }
 534
 535       gtk_paint_box (widget->style, widget->window,
 536                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 537                      area, widget, "optionmenu",
 538                      button_area.x, button_area.y,
 539                      button_area.width, button_area.height);
 540
 541       gtk_paint_tab (widget->style, widget->window,
 542                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 543                      area, widget, "optionmenutab",
 544                      button_area.x + button_area.width -
 545                      props.indicator_size.width - props.indicator_spacing.right -
 546                      widget->style->xthickness,
 547                      button_area.y + (button_area.height - props.indicator_size.height) / 2,
 548                      props.indicator_size.width, props.indicator_size.height);
 549
 550       if (GTK_WIDGET_HAS_FOCUS (widget))
 551         {
 552           if (props.interior_focus)
 553             {
 554               button_area.x += widget->style->xthickness + props.focus_pad;
 555               button_area.y += widget->style->ythickness + props.focus_pad;
 556               button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +
 557                       props.indicator_spacing.left +
 558                       props.indicator_spacing.right +
 559                       props.indicator_size.width;
 560               button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);
 561             }
 562           else
 563             {
 564               button_area.x -= props.focus_width + props.focus_pad;
 565               button_area.y -= props.focus_width + props.focus_pad;
 566               button_area.width += 2 * (props.focus_width + props.focus_pad);
 567               button_area.height += 2 * (props.focus_width + props.focus_pad);
 568             }
 569
 570           gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 571                            area, widget, "button",
 572                            button_area.x,
 573                            button_area.y,
 574                            button_area.width,
 575                            button_area.height);
 576         }
 577     }
 578 }
 579
 580 static gint
 581 gtk_option_menu_expose (GtkWidget      *widget,
 582                         GdkEventExpose *event)
 583 {
 584   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 585   g_return_val_if_fail (event != NULL, FALSE);
 586
 587   if (GTK_WIDGET_DRAWABLE (widget))
 588     {
 589       gtk_option_menu_paint (widget, &event->area);
 590
 591
 592       /* The following code tries to draw the child in two places at
 593        * once. It fails miserably for several reasons
 594        *
 595        * - If the child is not no-window, removing generates
 596        *   more expose events. Bad, bad, bad.
 597        *
 598        * - Even if the child is no-window, removing it now (properly)
 599        *   clears the space where it was, so it does no good
 600        */
 601
 602 #if 0
 603       remove_child = FALSE;
 604       child = GTK_BUTTON (widget)->child;
 605
 606       if (!child)
 607         {
 608           if (!GTK_OPTION_MENU (widget)->menu)
 609             return FALSE;
 610           gtk_option_menu_update_contents (GTK_OPTION_MENU (widget));
 611           child = GTK_BUTTON (widget)->child;
 612           if (!child)
 613             return FALSE;
 614           remove_child = TRUE;
 615         }
 616
 617       child_event = *event;
 618
 619       if (GTK_WIDGET_NO_WINDOW (child) &&
 620           gtk_widget_intersect (child, &event->area, &child_event.area))
 621         gtk_widget_event (child, (GdkEvent*) &child_event);
 622
 623       if (remove_child)
 624         gtk_option_menu_remove_contents (GTK_OPTION_MENU (widget));
 625 #else
 626       if (GTK_BIN (widget)->child)
 627         gtk_container_propagate_expose (GTK_CONTAINER (widget),
 628                                         GTK_BIN (widget)->child,
 629                                         event);
 630 #endif /* 0 */
 631     }
 632
 633   return FALSE;
 634 }
 635
 636 static gint
 637 gtk_option_menu_button_press (GtkWidget      *widget,
 638                               GdkEventButton *event)
 639 {
 640   GtkOptionMenu *option_menu;
 641   GtkWidget *menu_item;
 642
 643   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 644   g_return_val_if_fail (event != NULL, FALSE);
 645
 646   option_menu = GTK_OPTION_MENU (widget);
 647
 648   if ((event->type == GDK_BUTTON_PRESS) &&
 649       (event->button == 1))
 650     {
 651       gtk_option_menu_remove_contents (option_menu);
 652       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 653                       gtk_option_menu_position, option_menu,
 654                       event->button, event->time);
 655       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 656       if (menu_item)
 657         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 658       return TRUE;
 659     }
 660
 661   return FALSE;
 662 }
 663
 664 static gint
 665 gtk_option_menu_key_press (GtkWidget   *widget,
 666                            GdkEventKey *event)
 667 {
 668   GtkOptionMenu *option_menu;
 669   GtkWidget *menu_item;
 670
 671   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 672   g_return_val_if_fail (event != NULL, FALSE);
 673
 674   option_menu = GTK_OPTION_MENU (widget);
 675
 676   switch (event->keyval)
 677     {
 678     case GDK_KP_Space:
 679     case GDK_space:
 680       gtk_option_menu_remove_contents (option_menu);
 681       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 682                       gtk_option_menu_position, option_menu,
 683                       0, event->time);
 684       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 685       if (menu_item)
 686         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 687       return TRUE;
 688     }
 689
 690   return FALSE;
 691 }
 692
 693 static void
 694 gtk_option_menu_selection_done (GtkMenuShell  *menu_shell,
 695                                 GtkOptionMenu *option_menu)
 696 {
 697   g_return_if_fail (menu_shell != NULL);
 698   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 699
 700   gtk_option_menu_update_contents (option_menu);
 701 }
 702
 703 static void
 704 gtk_option_menu_changed (GtkOptionMenu *option_menu)
 705 {
 706   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 707
 708   g_signal_emit (G_OBJECT (option_menu), signals[CHANGED], 0);
 709 }
 710
 711 static void
 712 gtk_option_menu_select_first_sensitive (GtkOptionMenu *option_menu)
 713 {
 714   if (option_menu->menu)
 715     {
 716       GList *children = GTK_MENU_SHELL (option_menu->menu)->children;
 717       gint index = 0;
 718
 719       while (children)
 720         {
 721           if (GTK_WIDGET_SENSITIVE (children->data))
 722             {
 723               gtk_option_menu_set_history (option_menu, index);
 724               return;
 725             }
 726
 727           children = children->next;
 728           index++;
 729         }
 730     }
 731 }
 732
 733 static void
 734 gtk_option_menu_item_state_changed_cb (GtkWidget      *widget,
 735                                        GtkStateType    previous_state,
 736                                        GtkOptionMenu  *option_menu)
 737 {
 738   GtkWidget *child = GTK_BIN (option_menu)->child;
 739
 740   if (child && GTK_WIDGET_SENSITIVE (child) != GTK_WIDGET_IS_SENSITIVE (widget))
 741     gtk_widget_set_sensitive (child, GTK_WIDGET_IS_SENSITIVE (widget));
 742 }
 743
 744 static void
 745 gtk_option_menu_item_destroy_cb (GtkWidget     *widget,
 746                                  GtkOptionMenu *option_menu)
 747 {
 748   GtkWidget *child = GTK_BIN (option_menu)->child;
 749
 750   if (child)
 751     {
 752       gtk_widget_ref (child);
 753       gtk_option_menu_remove_contents (option_menu);
 754       gtk_widget_destroy (child);
 755       gtk_widget_unref (child);
 756
 757       gtk_option_menu_select_first_sensitive (option_menu);
 758     }
 759 }
 760
 761 static void
 762 gtk_option_menu_update_contents (GtkOptionMenu *option_menu)
 763 {
 764   GtkWidget *child;
 765   GtkRequisition child_requisition;
 766
 767   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 768
 769   if (option_menu->menu)
 770     {
 771       GtkWidget *old_item = option_menu->menu_item;
 772
 773       gtk_option_menu_remove_contents (option_menu);
 774
 775       option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 776       if (option_menu->menu_item)
 777         {
 778           gtk_widget_ref (option_menu->menu_item);
 779           child = GTK_BIN (option_menu->menu_item)->child;
 780           if (child)
 781             {
 782               if (!GTK_WIDGET_IS_SENSITIVE (option_menu->menu_item))
 783                 gtk_widget_set_sensitive (child, FALSE);
 784               gtk_widget_reparent (child, GTK_WIDGET (option_menu));
 785             }
 786
 787           gtk_signal_connect (GTK_OBJECT (option_menu->menu_item), "state_changed",
 788                               GTK_SIGNAL_FUNC (gtk_option_menu_item_state_changed_cb), option_menu);
 789           gtk_signal_connect (GTK_OBJECT (option_menu->menu_item), "destroy",
 790                               GTK_SIGNAL_FUNC (gtk_option_menu_item_destroy_cb), option_menu);
 791
 792           gtk_widget_size_request (child, &child_requisition);
 793           gtk_widget_size_allocate (GTK_WIDGET (option_menu),
 794                                     &(GTK_WIDGET (option_menu)->allocation));
 795
 796           if (GTK_WIDGET_DRAWABLE (option_menu))
 797             gtk_widget_queue_draw (GTK_WIDGET (option_menu));
 798         }
 799
 800       if (old_item != option_menu->menu_item)
 801         gtk_option_menu_changed (option_menu);
 802     }
 803 }
 804
 805 static void
 806 gtk_option_menu_remove_contents (GtkOptionMenu *option_menu)
 807 {
 808   GtkWidget *child;
 809
 810   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 811
 812   if (option_menu->menu_item)
 813     {
 814       child = GTK_BIN (option_menu)->child;
 815
 816       if (child)
 817         {
 818           gtk_widget_set_sensitive (child, TRUE);
 819           gtk_widget_reparent (child, option_menu->menu_item);
 820         }
 821
 822       gtk_signal_disconnect_by_func (GTK_OBJECT (option_menu->menu_item),
 823                                      GTK_SIGNAL_FUNC (gtk_option_menu_item_state_changed_cb),
 824                                      option_menu);
 825       gtk_signal_disconnect_by_func (GTK_OBJECT (option_menu->menu_item),
 826                                      GTK_SIGNAL_FUNC (gtk_option_menu_item_destroy_cb),
 827                                      option_menu);
 828
 829       gtk_widget_unref (option_menu->menu_item);
 830       option_menu->menu_item = NULL;
 831     }
 832 }
 833
 834 static void
 835 gtk_option_menu_calc_size (GtkOptionMenu *option_menu)
 836 {
 837   GtkWidget *child;
 838   GList *children;
 839   GtkRequisition child_requisition;
 840   gint old_width = option_menu->width;
 841   gint old_height = option_menu->height;
 842
 843   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 844
 845   option_menu->width = 0;
 846   option_menu->height = 0;
 847
 848   if (option_menu->menu)
 849     {
 850       children = GTK_MENU_SHELL (option_menu->menu)->children;
 851       while (children)
 852         {
 853           child = children->data;
 854           children = children->next;
 855
 856           if (GTK_WIDGET_VISIBLE (child))
 857             {
 858               GtkWidget *inner = GTK_BIN (child)->child;
 859
 860               if (inner)
 861                 {
 862                   gtk_widget_size_request (inner, &child_requisition);
 863
 864                   option_menu->width = MAX (option_menu->width, child_requisition.width);
 865                   option_menu->height = MAX (option_menu->height, child_requisition.height);
 866                 }
 867             }
 868         }
 869     }
 870
 871   if (old_width != option_menu->width || old_height != option_menu->height)
 872     gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 873 }
 874
 875 static void
 876 gtk_option_menu_position (GtkMenu  *menu,
 877                           gint     *x,
 878                           gint     *y,
 879                           gboolean *push_in,
 880                           gpointer  user_data)
 881 {
 882   GtkOptionMenu *option_menu;
 883   GtkWidget *active;
 884   GtkWidget *child;
 885   GtkWidget *widget;
 886   GtkRequisition requisition;
 887   GList *children;
 888   gint screen_width;
 889   gint menu_xpos;
 890   gint menu_ypos;
 891   gint menu_width;
 892
 893   g_return_if_fail (GTK_IS_OPTION_MENU (user_data));
 894
 895   option_menu = GTK_OPTION_MENU (user_data);
 896   widget = GTK_WIDGET (option_menu);
 897
 898   gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition);
 899   menu_width = requisition.width;
 900
 901   active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 902   gdk_window_get_origin (widget->window, &menu_xpos, &menu_ypos);
 903
 904   menu_xpos += widget->allocation.x;
 905   menu_ypos += widget->allocation.y + widget->allocation.height / 2 - 2;
 906
 907   if (active != NULL)
 908     {
 909       gtk_widget_get_child_requisition (active, &requisition);
 910       menu_ypos -= requisition.height / 2;
 911     }
 912
 913   children = GTK_MENU_SHELL (option_menu->menu)->children;
 914   while (children)
 915     {
 916       child = children->data;
 917
 918       if (active == child)
 919         break;
 920
 921       if (GTK_WIDGET_VISIBLE (child))
 922         {
 923           gtk_widget_get_child_requisition (child, &requisition);
 924           menu_ypos -= requisition.height;
 925         }
 926
 927       children = children->next;
 928     }
 929
 930   screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
 931
 932   if (menu_xpos < 0)
 933     menu_xpos = 0;
 934   else if ((menu_xpos + menu_width) > screen_width)
 935     menu_xpos -= ((menu_xpos + menu_width) - screen_width);
 936
 937   *x = menu_xpos;
 938   *y = menu_ypos;
 939   *push_in = TRUE;
 940 }
 941
 942
 943 static void
 944 gtk_option_menu_show_all (GtkWidget *widget)
 945 {
 946   GtkContainer *container;
 947   GtkOptionMenu *option_menu;
 948
 949   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 950   container = GTK_CONTAINER (widget);
 951   option_menu = GTK_OPTION_MENU (widget);
 952
 953   gtk_widget_show (widget);
 954   gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
 955   if (option_menu->menu)
 956     gtk_widget_show_all (option_menu->menu);
 957   if (option_menu->menu_item)
 958     gtk_widget_show_all (option_menu->menu_item);
 959 }
 960
 961
 962 static void
 963 gtk_option_menu_hide_all (GtkWidget *widget)
 964 {
 965   GtkContainer *container;
 966
 967   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 968   container = GTK_CONTAINER (widget);
 969
 970   gtk_widget_hide (widget);
 971   gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
 972 }
 973
 974 static gboolean
 975 gtk_option_menu_mnemonic_activate (GtkWidget *widget,
 976                                    gboolean   group_cycling)
 977 {
 978   gtk_widget_grab_focus (widget);
 979   return TRUE;
 980 }
 981
 982 static gint
 983 gtk_option_menu_scroll_event (GtkWidget          *widget,
 984                               GdkEventScroll     *event)
 985 {
 986   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
 987   gint index;
 988   gint n_children;
 989   gint index_dir;
 990   GList *l;
 991   GtkMenuItem *item;
 992
 993   index = gtk_option_menu_get_history (option_menu);
 994
 995   if (index != -1)
 996     {
 997       n_children = g_list_length (GTK_MENU_SHELL (option_menu->menu)->children);
 998
 999       if (event->direction == GDK_SCROLL_UP)
1000         index_dir = -1;
1001       else
1002         index_dir = 1;
1003
1004
1005       while (TRUE)
1006         {
1007           index += index_dir;
1008
1009           if (index < 0)
1010             break;
1011           if (index >= n_children)
1012             break;
1013
1014           l = g_list_nth (GTK_MENU_SHELL (option_menu->menu)->children, index);
1015           item = GTK_MENU_ITEM (l->data);
1016           if (GTK_WIDGET_VISIBLE (item) && GTK_WIDGET_IS_SENSITIVE (item))
1017             {
1018               gtk_option_menu_set_history (option_menu, index);
1019               break;
1020             }
1021
1022         }
1023     }
1024
1025   return TRUE;
1026 }
1027