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 #include "gtkintl.h"
  29 #include "gtkmenu.h"
  30 #include "gtkmenuitem.h"
  31 #include "gtkmarshalers.h"
  32 #include "gdk/gdkkeysyms.h"
  33
  34 #undef GTK_DISABLE_DEPRECATED
  35 #include "gtkoptionmenu.h"
  36
  37 #include "gtkprivate.h"
  38 #include "gtkalias.h"
  39
  40 #define CHILD_LEFT_SPACING        4
  41 #define CHILD_RIGHT_SPACING       1
  42 #define CHILD_TOP_SPACING         1
  43 #define CHILD_BOTTOM_SPACING      1
  44
  45 typedef struct _GtkOptionMenuProps GtkOptionMenuProps;
  46
  47 struct _GtkOptionMenuProps
  48 {
  49   gboolean interior_focus;
  50   GtkRequisition indicator_size;
  51   GtkBorder indicator_spacing;
  52   gint focus_width;
  53   gint focus_pad;
  54 };
  55
  56 static const GtkOptionMenuProps default_props = {
  57   TRUE,
  58   { 7, 13 },
  59   { 7, 5, 2, 2 },               /* Left, right, top, bottom */
  60   1,
  61   0
  62 };
  63
  64 static void gtk_option_menu_destroy         (GtkObject          *object);
  65 static void gtk_option_menu_set_property    (GObject            *object,
  66                                              guint               prop_id,
  67                                              const GValue       *value,
  68                                              GParamSpec         *pspec);
  69 static void gtk_option_menu_get_property    (GObject            *object,
  70                                              guint               prop_id,
  71                                              GValue             *value,
  72                                              GParamSpec         *pspec);
  73 static void gtk_option_menu_size_request    (GtkWidget          *widget,
  74                                              GtkRequisition     *requisition);
  75 static void gtk_option_menu_size_allocate   (GtkWidget          *widget,
  76                                              GtkAllocation      *allocation);
  77 static void gtk_option_menu_paint           (GtkWidget          *widget,
  78                                              GdkRectangle       *area);
  79 static gint gtk_option_menu_expose          (GtkWidget          *widget,
  80                                              GdkEventExpose     *event);
  81 static gint gtk_option_menu_button_press    (GtkWidget          *widget,
  82                                              GdkEventButton     *event);
  83 static gint gtk_option_menu_key_press       (GtkWidget          *widget,
  84                                              GdkEventKey        *event);
  85 static void gtk_option_menu_selection_done  (GtkMenuShell       *menu_shell,
  86                                              GtkOptionMenu      *option_menu);
  87 static void gtk_option_menu_update_contents (GtkOptionMenu      *option_menu);
  88 static void gtk_option_menu_remove_contents (GtkOptionMenu      *option_menu);
  89 static void gtk_option_menu_calc_size       (GtkOptionMenu      *option_menu);
  90 static void gtk_option_menu_position        (GtkMenu            *menu,
  91                                              gint               *x,
  92                                              gint               *y,
  93                                              gint               *scroll_offet,
  94                                              gpointer            user_data);
  95 static void gtk_option_menu_show_all        (GtkWidget          *widget);
  96 static void gtk_option_menu_hide_all        (GtkWidget          *widget);
  97 static gboolean gtk_option_menu_mnemonic_activate (GtkWidget    *widget,
  98                                                    gboolean      group_cycling);
  99 static GType gtk_option_menu_child_type   (GtkContainer       *container);
 100 static gint gtk_option_menu_scroll_event    (GtkWidget          *widget,
 101                                              GdkEventScroll     *event);
 102
 103 enum
 104 {
 105   CHANGED,
 106   LAST_SIGNAL
 107 };
 108
 109 enum
 110 {
 111   PROP_0,
 112   PROP_MENU,
 113   LAST_PROP
 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;
 376
 377   g_return_if_fail (GTK_IS_OPTION_MENU (object));
 378
 379   option_menu = GTK_OPTION_MENU (object);
 380
 381   if (option_menu->menu)
 382     gtk_widget_destroy (option_menu->menu);
 383
 384   if (GTK_OBJECT_CLASS (gtk_option_menu_parent_class)->destroy)
 385     (* GTK_OBJECT_CLASS (gtk_option_menu_parent_class)->destroy) (object);
 386 }
 387
 388 static void
 389 gtk_option_menu_get_props (GtkOptionMenu       *option_menu,
 390                            GtkOptionMenuProps  *props)
 391 {
 392   GtkRequisition *indicator_size;
 393   GtkBorder *indicator_spacing;
 394
 395   gtk_widget_style_get (GTK_WIDGET (option_menu),
 396                         "indicator-size", &indicator_size,
 397                         "indicator-spacing", &indicator_spacing,
 398                         "interior-focus", &props->interior_focus,
 399                         "focus-line-width", &props->focus_width,
 400                         "focus-padding", &props->focus_pad,
 401                         NULL);
 402
 403   if (indicator_size)
 404     props->indicator_size = *indicator_size;
 405   else
 406     props->indicator_size = default_props.indicator_size;
 407
 408   if (indicator_spacing)
 409     props->indicator_spacing = *indicator_spacing;
 410   else
 411     props->indicator_spacing = default_props.indicator_spacing;
 412
 413   gtk_requisition_free (indicator_size);
 414   gtk_border_free (indicator_spacing);
 415 }
 416
 417 static void
 418 gtk_option_menu_size_request (GtkWidget      *widget,
 419                               GtkRequisition *requisition)
 420 {
 421   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
 422   GtkOptionMenuProps props;
 423   gint tmp;
 424   GtkRequisition child_requisition = { 0, 0 };
 425
 426   gtk_option_menu_get_props (option_menu, &props);
 427
 428   if (GTK_BIN (option_menu)->child && GTK_WIDGET_VISIBLE (GTK_BIN (option_menu)->child))
 429     {
 430       gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);
 431
 432       requisition->width += child_requisition.width;
 433       requisition->height += child_requisition.height;
 434     }
 435
 436   requisition->width = ((GTK_CONTAINER (widget)->border_width +
 437                          GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +
 438                         MAX (child_requisition.width, option_menu->width) +
 439                         props.indicator_size.width +
 440                         props.indicator_spacing.left + props.indicator_spacing.right +
 441                         CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);
 442   requisition->height = ((GTK_CONTAINER (widget)->border_width +
 443                           GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +
 444                          MAX (child_requisition.height, option_menu->height) +
 445                          CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);
 446
 447   tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +
 448          props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);
 449   requisition->height = MAX (requisition->height, tmp);
 450 }
 451
 452 static void
 453 gtk_option_menu_size_allocate (GtkWidget     *widget,
 454                                GtkAllocation *allocation)
 455 {
 456   GtkWidget *child;
 457   GtkButton *button = GTK_BUTTON (widget);
 458   GtkAllocation child_allocation;
 459   GtkOptionMenuProps props;
 460   gint border_width;
 461
 462   gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 463   border_width = GTK_CONTAINER (widget)->border_width;
 464
 465   widget->allocation = *allocation;
 466   if (GTK_WIDGET_REALIZED (widget))
 467     gdk_window_move_resize (button->event_window,
 468                             allocation->x + border_width, allocation->y + border_width,
 469                             allocation->width - border_width * 2, allocation->height - border_width * 2);
 470
 471   child = GTK_BIN (widget)->child;
 472   if (child && GTK_WIDGET_VISIBLE (child))
 473     {
 474       gint xthickness = GTK_WIDGET (widget)->style->xthickness;
 475       gint ythickness = GTK_WIDGET (widget)->style->ythickness;
 476
 477       child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;
 478       child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;
 479       child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -
 480                                     props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -
 481                                     CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);
 482       child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -
 483                                      CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);
 484
 485       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 486         child_allocation.x += props.indicator_size.width + props.indicator_spacing.left + props.indicator_spacing.right;
 487
 488       gtk_widget_size_allocate (child, &child_allocation);
 489     }
 490 }
 491
 492 static void
 493 gtk_option_menu_paint (GtkWidget    *widget,
 494                        GdkRectangle *area)
 495 {
 496   GdkRectangle button_area;
 497   GtkOptionMenuProps props;
 498   gint border_width;
 499   gint tab_x;
 500
 501   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 502   g_return_if_fail (area != NULL);
 503
 504   if (GTK_WIDGET_DRAWABLE (widget))
 505     {
 506       border_width = GTK_CONTAINER (widget)->border_width;
 507       gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 508
 509       button_area.x = widget->allocation.x + border_width;
 510       button_area.y = widget->allocation.y + border_width;
 511       button_area.width = widget->allocation.width - 2 * border_width;
 512       button_area.height = widget->allocation.height - 2 * border_width;
 513
 514       if (!props.interior_focus && GTK_WIDGET_HAS_FOCUS (widget))
 515         {
 516           button_area.x += props.focus_width + props.focus_pad;
 517           button_area.y += props.focus_width + props.focus_pad;
 518           button_area.width -= 2 * (props.focus_width + props.focus_pad);
 519           button_area.height -= 2 * (props.focus_width + props.focus_pad);
 520         }
 521
 522       gtk_paint_box (widget->style, widget->window,
 523                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 524                      area, widget, "optionmenu",
 525                      button_area.x, button_area.y,
 526                      button_area.width, button_area.height);
 527
 528       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 529         tab_x = button_area.x + props.indicator_spacing.right +
 530           widget->style->xthickness;
 531       else
 532         tab_x = button_area.x + button_area.width -
 533           props.indicator_size.width - props.indicator_spacing.right -
 534           widget->style->xthickness;
 535
 536       gtk_paint_tab (widget->style, widget->window,
 537                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 538                      area, widget, "optionmenutab",
 539                      tab_x,
 540                      button_area.y + (button_area.height - props.indicator_size.height) / 2,
 541                      props.indicator_size.width, props.indicator_size.height);
 542
 543       if (GTK_WIDGET_HAS_FOCUS (widget))
 544         {
 545           if (props.interior_focus)
 546             {
 547               button_area.x += widget->style->xthickness + props.focus_pad;
 548               button_area.y += widget->style->ythickness + props.focus_pad;
 549               button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +
 550                       props.indicator_spacing.left +
 551                       props.indicator_spacing.right +
 552                       props.indicator_size.width;
 553               button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);
 554               if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 555                 button_area.x += props.indicator_spacing.left +
 556                   props.indicator_spacing.right +
 557                   props.indicator_size.width;
 558             }
 559           else
 560             {
 561               button_area.x -= props.focus_width + props.focus_pad;
 562               button_area.y -= props.focus_width + props.focus_pad;
 563               button_area.width += 2 * (props.focus_width + props.focus_pad);
 564               button_area.height += 2 * (props.focus_width + props.focus_pad);
 565             }
 566
 567           gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 568                            area, widget, "button",
 569                            button_area.x,
 570                            button_area.y,
 571                            button_area.width,
 572                            button_area.height);
 573         }
 574     }
 575 }
 576
 577 static gint
 578 gtk_option_menu_expose (GtkWidget      *widget,
 579                         GdkEventExpose *event)
 580 {
 581   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 582   g_return_val_if_fail (event != NULL, FALSE);
 583
 584   if (GTK_WIDGET_DRAWABLE (widget))
 585     {
 586       gtk_option_menu_paint (widget, &event->area);
 587
 588
 589       /* The following code tries to draw the child in two places at
 590        * once. It fails miserably for several reasons
 591        *
 592        * - If the child is not no-window, removing generates
 593        *   more expose events. Bad, bad, bad.
 594        *
 595        * - Even if the child is no-window, removing it now (properly)
 596        *   clears the space where it was, so it does no good
 597        */
 598
 599 #if 0
 600       remove_child = FALSE;
 601       child = GTK_BUTTON (widget)->child;
 602
 603       if (!child)
 604         {
 605           if (!GTK_OPTION_MENU (widget)->menu)
 606             return FALSE;
 607           gtk_option_menu_update_contents (GTK_OPTION_MENU (widget));
 608           child = GTK_BUTTON (widget)->child;
 609           if (!child)
 610             return FALSE;
 611           remove_child = TRUE;
 612         }
 613
 614       child_event = *event;
 615
 616       if (GTK_WIDGET_NO_WINDOW (child) &&
 617           gtk_widget_intersect (child, &event->area, &child_event.area))
 618         gtk_widget_event (child, (GdkEvent*) &child_event);
 619
 620       if (remove_child)
 621         gtk_option_menu_remove_contents (GTK_OPTION_MENU (widget));
 622 #else
 623       if (GTK_BIN (widget)->child)
 624         gtk_container_propagate_expose (GTK_CONTAINER (widget),
 625                                         GTK_BIN (widget)->child,
 626                                         event);
 627 #endif /* 0 */
 628     }
 629
 630   return FALSE;
 631 }
 632
 633 static gint
 634 gtk_option_menu_button_press (GtkWidget      *widget,
 635                               GdkEventButton *event)
 636 {
 637   GtkOptionMenu *option_menu;
 638   GtkWidget *menu_item;
 639
 640   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 641   g_return_val_if_fail (event != NULL, FALSE);
 642
 643   option_menu = GTK_OPTION_MENU (widget);
 644
 645   if ((event->type == GDK_BUTTON_PRESS) &&
 646       (event->button == 1))
 647     {
 648       gtk_option_menu_remove_contents (option_menu);
 649       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 650                       gtk_option_menu_position, option_menu,
 651                       event->button, event->time);
 652       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 653       if (menu_item)
 654         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 655       return TRUE;
 656     }
 657
 658   return FALSE;
 659 }
 660
 661 static gint
 662 gtk_option_menu_key_press (GtkWidget   *widget,
 663                            GdkEventKey *event)
 664 {
 665   GtkOptionMenu *option_menu;
 666   GtkWidget *menu_item;
 667
 668   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 669   g_return_val_if_fail (event != NULL, FALSE);
 670
 671   option_menu = GTK_OPTION_MENU (widget);
 672
 673   switch (event->keyval)
 674     {
 675     case GDK_KP_Space:
 676     case GDK_space:
 677       gtk_option_menu_remove_contents (option_menu);
 678       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 679                       gtk_option_menu_position, option_menu,
 680                       0, event->time);
 681       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 682       if (menu_item)
 683         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 684       return TRUE;
 685     }
 686
 687   return FALSE;
 688 }
 689
 690 static void
 691 gtk_option_menu_selection_done (GtkMenuShell  *menu_shell,
 692                                 GtkOptionMenu *option_menu)
 693 {
 694   g_return_if_fail (menu_shell != NULL);
 695   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 696
 697   gtk_option_menu_update_contents (option_menu);
 698 }
 699
 700 static void
 701 gtk_option_menu_changed (GtkOptionMenu *option_menu)
 702 {
 703   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 704
 705   g_signal_emit (option_menu, signals[CHANGED], 0);
 706 }
 707
 708 static void
 709 gtk_option_menu_select_first_sensitive (GtkOptionMenu *option_menu)
 710 {
 711   if (option_menu->menu)
 712     {
 713       GList *children = GTK_MENU_SHELL (option_menu->menu)->children;
 714       gint index = 0;
 715
 716       while (children)
 717         {
 718           if (GTK_WIDGET_SENSITIVE (children->data))
 719             {
 720               gtk_option_menu_set_history (option_menu, index);
 721               return;
 722             }
 723
 724           children = children->next;
 725           index++;
 726         }
 727     }
 728 }
 729
 730 static void
 731 gtk_option_menu_item_state_changed_cb (GtkWidget      *widget,
 732                                        GtkStateType    previous_state,
 733                                        GtkOptionMenu  *option_menu)
 734 {
 735   GtkWidget *child = GTK_BIN (option_menu)->child;
 736
 737   if (child && GTK_WIDGET_SENSITIVE (child) != GTK_WIDGET_IS_SENSITIVE (widget))
 738     gtk_widget_set_sensitive (child, GTK_WIDGET_IS_SENSITIVE (widget));
 739 }
 740
 741 static void
 742 gtk_option_menu_item_destroy_cb (GtkWidget     *widget,
 743                                  GtkOptionMenu *option_menu)
 744 {
 745   GtkWidget *child = GTK_BIN (option_menu)->child;
 746
 747   if (child)
 748     {
 749       g_object_ref (child);
 750       gtk_option_menu_remove_contents (option_menu);
 751       gtk_widget_destroy (child);
 752       g_object_unref (child);
 753
 754       gtk_option_menu_select_first_sensitive (option_menu);
 755     }
 756 }
 757
 758 static void
 759 gtk_option_menu_update_contents (GtkOptionMenu *option_menu)
 760 {
 761   GtkWidget *child;
 762   GtkRequisition child_requisition;
 763
 764   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 765
 766   if (option_menu->menu)
 767     {
 768       GtkWidget *old_item = option_menu->menu_item;
 769
 770       gtk_option_menu_remove_contents (option_menu);
 771
 772       option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 773       if (option_menu->menu_item)
 774         {
 775           g_object_ref (option_menu->menu_item);
 776           child = GTK_BIN (option_menu->menu_item)->child;
 777           if (child)
 778             {
 779               if (!GTK_WIDGET_IS_SENSITIVE (option_menu->menu_item))
 780                 gtk_widget_set_sensitive (child, FALSE);
 781               gtk_widget_reparent (child, GTK_WIDGET (option_menu));
 782             }
 783
 784           g_signal_connect (option_menu->menu_item, "state_changed",
 785                             G_CALLBACK (gtk_option_menu_item_state_changed_cb), option_menu);
 786           g_signal_connect (option_menu->menu_item, "destroy",
 787                             G_CALLBACK (gtk_option_menu_item_destroy_cb), option_menu);
 788
 789           gtk_widget_size_request (child, &child_requisition);
 790           gtk_widget_size_allocate (GTK_WIDGET (option_menu),
 791                                     &(GTK_WIDGET (option_menu)->allocation));
 792
 793           if (GTK_WIDGET_DRAWABLE (option_menu))
 794             gtk_widget_queue_draw (GTK_WIDGET (option_menu));
 795         }
 796
 797       if (old_item != option_menu->menu_item)
 798         gtk_option_menu_changed (option_menu);
 799     }
 800 }
 801
 802 static void
 803 gtk_option_menu_remove_contents (GtkOptionMenu *option_menu)
 804 {
 805   GtkWidget *child;
 806
 807   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 808
 809   if (option_menu->menu_item)
 810     {
 811       child = GTK_BIN (option_menu)->child;
 812
 813       if (child)
 814         {
 815           gtk_widget_set_sensitive (child, TRUE);
 816           gtk_widget_set_state (child, GTK_STATE_NORMAL);
 817           gtk_widget_reparent (child, option_menu->menu_item);
 818         }
 819
 820       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 821                                             gtk_option_menu_item_state_changed_cb,
 822                                             option_menu);
 823       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 824                                             gtk_option_menu_item_destroy_cb,
 825                                             option_menu);
 826
 827       g_object_unref (option_menu->menu_item);
 828       option_menu->menu_item = NULL;
 829     }
 830 }
 831
 832 static void
 833 gtk_option_menu_calc_size (GtkOptionMenu *option_menu)
 834 {
 835   GtkWidget *child;
 836   GList *children;
 837   GtkRequisition child_requisition;
 838   gint old_width = option_menu->width;
 839   gint old_height = option_menu->height;
 840
 841   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 842
 843   option_menu->width = 0;
 844   option_menu->height = 0;
 845
 846   if (option_menu->menu)
 847     {
 848       children = GTK_MENU_SHELL (option_menu->menu)->children;
 849       while (children)
 850         {
 851           child = children->data;
 852           children = children->next;
 853
 854           if (GTK_WIDGET_VISIBLE (child))
 855             {
 856               GtkWidget *inner = GTK_BIN (child)->child;
 857
 858               if (inner)
 859                 {
 860                   gtk_widget_size_request (inner, &child_requisition);
 861
 862                   option_menu->width = MAX (option_menu->width, child_requisition.width);
 863                   option_menu->height = MAX (option_menu->height, child_requisition.height);
 864                 }
 865             }
 866         }
 867     }
 868
 869   if (old_width != option_menu->width || old_height != option_menu->height)
 870     gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 871 }
 872
 873 static void
 874 gtk_option_menu_position (GtkMenu  *menu,
 875                           gint     *x,
 876                           gint     *y,
 877                           gboolean *push_in,
 878                           gpointer  user_data)
 879 {
 880   GtkOptionMenu *option_menu;
 881   GtkWidget *active;
 882   GtkWidget *child;
 883   GtkWidget *widget;
 884   GtkRequisition requisition;
 885   GList *children;
 886   gint screen_width;
 887   gint menu_xpos;
 888   gint menu_ypos;
 889   gint menu_width;
 890
 891   g_return_if_fail (GTK_IS_OPTION_MENU (user_data));
 892
 893   option_menu = GTK_OPTION_MENU (user_data);
 894   widget = GTK_WIDGET (option_menu);
 895
 896   gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition);
 897   menu_width = requisition.width;
 898
 899   active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 900   gdk_window_get_origin (widget->window, &menu_xpos, &menu_ypos);
 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