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   GtkWidget *widget = GTK_WIDGET (option_menu);
 190
 191   gtk_widget_set_can_focus (widget, TRUE);
 192   gtk_widget_set_can_default (widget, FALSE);
 193   gtk_widget_set_receives_default (widget, FALSE);
 194
 195   option_menu->menu = NULL;
 196   option_menu->menu_item = NULL;
 197   option_menu->width = 0;
 198   option_menu->height = 0;
 199 }
 200
 201 GtkWidget*
 202 gtk_option_menu_new (void)
 203 {
 204   return g_object_new (GTK_TYPE_OPTION_MENU, NULL);
 205 }
 206
 207 GtkWidget*
 208 gtk_option_menu_get_menu (GtkOptionMenu *option_menu)
 209 {
 210   g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), NULL);
 211
 212   return option_menu->menu;
 213 }
 214
 215 static void
 216 gtk_option_menu_detacher (GtkWidget     *widget,
 217                           GtkMenu       *menu)
 218 {
 219   GtkOptionMenu *option_menu;
 220
 221   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 222
 223   option_menu = GTK_OPTION_MENU (widget);
 224   g_return_if_fail (option_menu->menu == (GtkWidget*) menu);
 225
 226   gtk_option_menu_remove_contents (option_menu);
 227   g_signal_handlers_disconnect_by_func (option_menu->menu,
 228                                         gtk_option_menu_selection_done,
 229                                         option_menu);
 230   g_signal_handlers_disconnect_by_func (option_menu->menu,
 231                                         gtk_option_menu_calc_size,
 232                                         option_menu);
 233
 234   option_menu->menu = NULL;
 235   g_object_notify (G_OBJECT (option_menu), "menu");
 236 }
 237
 238 void
 239 gtk_option_menu_set_menu (GtkOptionMenu *option_menu,
 240                           GtkWidget     *menu)
 241 {
 242   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 243   g_return_if_fail (GTK_IS_MENU (menu));
 244
 245   if (option_menu->menu != menu)
 246     {
 247       gtk_option_menu_remove_menu (option_menu);
 248
 249       option_menu->menu = menu;
 250       gtk_menu_attach_to_widget (GTK_MENU (menu),
 251                                  GTK_WIDGET (option_menu),
 252                                  gtk_option_menu_detacher);
 253
 254       gtk_option_menu_calc_size (option_menu);
 255
 256       g_signal_connect_after (option_menu->menu, "selection-done",
 257                               G_CALLBACK (gtk_option_menu_selection_done),
 258                               option_menu);
 259       g_signal_connect_swapped (option_menu->menu, "size-request",
 260                                 G_CALLBACK (gtk_option_menu_calc_size),
 261                                 option_menu);
 262
 263       if (GTK_WIDGET (option_menu)->parent)
 264         gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 265
 266       gtk_option_menu_update_contents (option_menu);
 267
 268       g_object_notify (G_OBJECT (option_menu), "menu");
 269     }
 270 }
 271
 272 void
 273 gtk_option_menu_remove_menu (GtkOptionMenu *option_menu)
 274 {
 275   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 276
 277   if (option_menu->menu)
 278     {
 279       if (GTK_MENU_SHELL (option_menu->menu)->active)
 280         gtk_menu_shell_cancel (GTK_MENU_SHELL (option_menu->menu));
 281
 282       gtk_menu_detach (GTK_MENU (option_menu->menu));
 283     }
 284 }
 285
 286 void
 287 gtk_option_menu_set_history (GtkOptionMenu *option_menu,
 288                              guint          index)
 289 {
 290   GtkWidget *menu_item;
 291
 292   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 293
 294   if (option_menu->menu)
 295     {
 296       gtk_menu_set_active (GTK_MENU (option_menu->menu), index);
 297       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 298
 299       if (menu_item != option_menu->menu_item)
 300         gtk_option_menu_update_contents (option_menu);
 301     }
 302 }
 303
 304 /**
 305  * gtk_option_menu_get_history:
 306  * @option_menu: a #GtkOptionMenu
 307  *
 308  * Retrieves the index of the currently selected menu item. The menu
 309  * items are numbered from top to bottom, starting with 0.
 310  *
 311  * Return value: index of the selected menu item, or -1 if there are no menu items
 312  * Deprecated: 2.4: Use #GtkComboBox instead.
 313  **/
 314 gint
 315 gtk_option_menu_get_history (GtkOptionMenu *option_menu)
 316 {
 317   GtkWidget *active_widget;
 318
 319   g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), -1);
 320
 321   if (option_menu->menu)
 322     {
 323       active_widget = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 324
 325       if (active_widget)
 326         return g_list_index (GTK_MENU_SHELL (option_menu->menu)->children,
 327                              active_widget);
 328       else
 329         return -1;
 330     }
 331   else
 332     return -1;
 333 }
 334
 335 static void
 336 gtk_option_menu_set_property (GObject            *object,
 337                               guint               prop_id,
 338                               const GValue       *value,
 339                               GParamSpec         *pspec)
 340 {
 341   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 342
 343   switch (prop_id)
 344     {
 345     case PROP_MENU:
 346       gtk_option_menu_set_menu (option_menu, g_value_get_object (value));
 347       break;
 348
 349     default:
 350       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 351       break;
 352     }
 353 }
 354
 355 static void
 356 gtk_option_menu_get_property (GObject            *object,
 357                               guint               prop_id,
 358                               GValue             *value,
 359                               GParamSpec         *pspec)
 360 {
 361   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 362
 363   switch (prop_id)
 364     {
 365     case PROP_MENU:
 366       g_value_set_object (value, option_menu->menu);
 367       break;
 368
 369     default:
 370       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 371       break;
 372     }
 373 }
 374
 375 static void
 376 gtk_option_menu_destroy (GtkObject *object)
 377 {
 378   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 379
 380   if (option_menu->menu)
 381     gtk_widget_destroy (option_menu->menu);
 382
 383   GTK_OBJECT_CLASS (gtk_option_menu_parent_class)->destroy (object);
 384 }
 385
 386 static void
 387 gtk_option_menu_get_props (GtkOptionMenu       *option_menu,
 388                            GtkOptionMenuProps  *props)
 389 {
 390   GtkRequisition *indicator_size;
 391   GtkBorder *indicator_spacing;
 392
 393   gtk_widget_style_get (GTK_WIDGET (option_menu),
 394                         "indicator-size", &indicator_size,
 395                         "indicator-spacing", &indicator_spacing,
 396                         "interior-focus", &props->interior_focus,
 397                         "focus-line-width", &props->focus_width,
 398                         "focus-padding", &props->focus_pad,
 399                         NULL);
 400
 401   if (indicator_size)
 402     props->indicator_size = *indicator_size;
 403   else
 404     props->indicator_size = default_props.indicator_size;
 405
 406   if (indicator_spacing)
 407     props->indicator_spacing = *indicator_spacing;
 408   else
 409     props->indicator_spacing = default_props.indicator_spacing;
 410
 411   gtk_requisition_free (indicator_size);
 412   gtk_border_free (indicator_spacing);
 413 }
 414
 415 static void
 416 gtk_option_menu_size_request (GtkWidget      *widget,
 417                               GtkRequisition *requisition)
 418 {
 419   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
 420   GtkOptionMenuProps props;
 421   gint tmp;
 422   GtkRequisition child_requisition = { 0, 0 };
 423
 424   gtk_option_menu_get_props (option_menu, &props);
 425
 426   if (GTK_BIN (option_menu)->child && gtk_widget_get_visible (GTK_BIN (option_menu)->child))
 427     {
 428       gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);
 429
 430       requisition->width += child_requisition.width;
 431       requisition->height += child_requisition.height;
 432     }
 433
 434   requisition->width = ((GTK_CONTAINER (widget)->border_width +
 435                          GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +
 436                         MAX (child_requisition.width, option_menu->width) +
 437                         props.indicator_size.width +
 438                         props.indicator_spacing.left + props.indicator_spacing.right +
 439                         CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);
 440   requisition->height = ((GTK_CONTAINER (widget)->border_width +
 441                           GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +
 442                          MAX (child_requisition.height, option_menu->height) +
 443                          CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);
 444
 445   tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +
 446          props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);
 447   requisition->height = MAX (requisition->height, tmp);
 448 }
 449
 450 static void
 451 gtk_option_menu_size_allocate (GtkWidget     *widget,
 452                                GtkAllocation *allocation)
 453 {
 454   GtkWidget *child;
 455   GtkButton *button = GTK_BUTTON (widget);
 456   GtkAllocation child_allocation;
 457   GtkOptionMenuProps props;
 458   gint border_width;
 459
 460   gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 461   border_width = GTK_CONTAINER (widget)->border_width;
 462
 463   widget->allocation = *allocation;
 464   if (gtk_widget_get_realized (widget))
 465     gdk_window_move_resize (button->event_window,
 466                             allocation->x + border_width, allocation->y + border_width,
 467                             allocation->width - border_width * 2, allocation->height - border_width * 2);
 468
 469   child = GTK_BIN (widget)->child;
 470   if (child && gtk_widget_get_visible (child))
 471     {
 472       gint xthickness = GTK_WIDGET (widget)->style->xthickness;
 473       gint ythickness = GTK_WIDGET (widget)->style->ythickness;
 474
 475       child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;
 476       child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;
 477       child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -
 478                                     props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -
 479                                     CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);
 480       child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -
 481                                      CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);
 482
 483       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 484         child_allocation.x += props.indicator_size.width + props.indicator_spacing.left + props.indicator_spacing.right;
 485
 486       gtk_widget_size_allocate (child, &child_allocation);
 487     }
 488 }
 489
 490 static void
 491 gtk_option_menu_paint (GtkWidget    *widget,
 492                        GdkRectangle *area)
 493 {
 494   GdkRectangle button_area;
 495   GtkOptionMenuProps props;
 496   gint border_width;
 497   gint tab_x;
 498
 499   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 500   g_return_if_fail (area != NULL);
 501
 502   if (GTK_WIDGET_DRAWABLE (widget))
 503     {
 504       border_width = GTK_CONTAINER (widget)->border_width;
 505       gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 506
 507       button_area.x = widget->allocation.x + border_width;
 508       button_area.y = widget->allocation.y + border_width;
 509       button_area.width = widget->allocation.width - 2 * border_width;
 510       button_area.height = widget->allocation.height - 2 * border_width;
 511
 512       if (!props.interior_focus && gtk_widget_has_focus (widget))
 513         {
 514           button_area.x += props.focus_width + props.focus_pad;
 515           button_area.y += props.focus_width + props.focus_pad;
 516           button_area.width -= 2 * (props.focus_width + props.focus_pad);
 517           button_area.height -= 2 * (props.focus_width + props.focus_pad);
 518         }
 519
 520       gtk_paint_box (widget->style, widget->window,
 521                      gtk_widget_get_state (widget), GTK_SHADOW_OUT,
 522                      area, widget, "optionmenu",
 523                      button_area.x, button_area.y,
 524                      button_area.width, button_area.height);
 525
 526       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 527         tab_x = button_area.x + props.indicator_spacing.right +
 528           widget->style->xthickness;
 529       else
 530         tab_x = button_area.x + button_area.width -
 531           props.indicator_size.width - props.indicator_spacing.right -
 532           widget->style->xthickness;
 533
 534       gtk_paint_tab (widget->style, widget->window,
 535                      gtk_widget_get_state (widget), GTK_SHADOW_OUT,
 536                      area, widget, "optionmenutab",
 537                      tab_x,
 538                      button_area.y + (button_area.height - props.indicator_size.height) / 2,
 539                      props.indicator_size.width, props.indicator_size.height);
 540
 541       if (gtk_widget_has_focus (widget))
 542         {
 543           if (props.interior_focus)
 544             {
 545               button_area.x += widget->style->xthickness + props.focus_pad;
 546               button_area.y += widget->style->ythickness + props.focus_pad;
 547               button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +
 548                       props.indicator_spacing.left +
 549                       props.indicator_spacing.right +
 550                       props.indicator_size.width;
 551               button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);
 552               if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 553                 button_area.x += props.indicator_spacing.left +
 554                   props.indicator_spacing.right +
 555                   props.indicator_size.width;
 556             }
 557           else
 558             {
 559               button_area.x -= props.focus_width + props.focus_pad;
 560               button_area.y -= props.focus_width + props.focus_pad;
 561               button_area.width += 2 * (props.focus_width + props.focus_pad);
 562               button_area.height += 2 * (props.focus_width + props.focus_pad);
 563             }
 564
 565           gtk_paint_focus (widget->style, widget->window, gtk_widget_get_state (widget),
 566                            area, widget, "button",
 567                            button_area.x,
 568                            button_area.y,
 569                            button_area.width,
 570                            button_area.height);
 571         }
 572     }
 573 }
 574
 575 static gint
 576 gtk_option_menu_expose (GtkWidget      *widget,
 577                         GdkEventExpose *event)
 578 {
 579   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 580   g_return_val_if_fail (event != NULL, FALSE);
 581
 582   if (GTK_WIDGET_DRAWABLE (widget))
 583     {
 584       gtk_option_menu_paint (widget, &event->area);
 585
 586
 587       /* The following code tries to draw the child in two places at
 588        * once. It fails miserably for several reasons
 589        *
 590        * - If the child is not no-window, removing generates
 591        *   more expose events. Bad, bad, bad.
 592        *
 593        * - Even if the child is no-window, removing it now (properly)
 594        *   clears the space where it was, so it does no good
 595        */
 596
 597 #if 0
 598       remove_child = FALSE;
 599       child = GTK_BUTTON (widget)->child;
 600
 601       if (!child)
 602         {
 603           if (!GTK_OPTION_MENU (widget)->menu)
 604             return FALSE;
 605           gtk_option_menu_update_contents (GTK_OPTION_MENU (widget));
 606           child = GTK_BUTTON (widget)->child;
 607           if (!child)
 608             return FALSE;
 609           remove_child = TRUE;
 610         }
 611
 612       child_event = *event;
 613
 614       if (!gtk_widget_get_has_window (child) &&
 615           gtk_widget_intersect (child, &event->area, &child_event.area))
 616         gtk_widget_event (child, (GdkEvent*) &child_event);
 617
 618       if (remove_child)
 619         gtk_option_menu_remove_contents (GTK_OPTION_MENU (widget));
 620 #else
 621       if (GTK_BIN (widget)->child)
 622         gtk_container_propagate_expose (GTK_CONTAINER (widget),
 623                                         GTK_BIN (widget)->child,
 624                                         event);
 625 #endif /* 0 */
 626     }
 627
 628   return FALSE;
 629 }
 630
 631 static gint
 632 gtk_option_menu_button_press (GtkWidget      *widget,
 633                               GdkEventButton *event)
 634 {
 635   GtkOptionMenu *option_menu;
 636   GtkWidget *menu_item;
 637
 638   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 639   g_return_val_if_fail (event != NULL, FALSE);
 640
 641   option_menu = GTK_OPTION_MENU (widget);
 642
 643   if ((event->type == GDK_BUTTON_PRESS) &&
 644       (event->button == 1))
 645     {
 646       gtk_option_menu_remove_contents (option_menu);
 647       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 648                       gtk_option_menu_position, option_menu,
 649                       event->button, event->time);
 650       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 651       if (menu_item)
 652         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 653       return TRUE;
 654     }
 655
 656   return FALSE;
 657 }
 658
 659 static gint
 660 gtk_option_menu_key_press (GtkWidget   *widget,
 661                            GdkEventKey *event)
 662 {
 663   GtkOptionMenu *option_menu;
 664   GtkWidget *menu_item;
 665
 666   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 667   g_return_val_if_fail (event != NULL, FALSE);
 668
 669   option_menu = GTK_OPTION_MENU (widget);
 670
 671   switch (event->keyval)
 672     {
 673     case GDK_KP_Space:
 674     case GDK_space:
 675       gtk_option_menu_remove_contents (option_menu);
 676       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 677                       gtk_option_menu_position, option_menu,
 678                       0, event->time);
 679       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 680       if (menu_item)
 681         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 682       return TRUE;
 683     }
 684
 685   return FALSE;
 686 }
 687
 688 static void
 689 gtk_option_menu_selection_done (GtkMenuShell  *menu_shell,
 690                                 GtkOptionMenu *option_menu)
 691 {
 692   g_return_if_fail (menu_shell != NULL);
 693   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 694
 695   gtk_option_menu_update_contents (option_menu);
 696 }
 697
 698 static void
 699 gtk_option_menu_changed (GtkOptionMenu *option_menu)
 700 {
 701   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 702
 703   g_signal_emit (option_menu, signals[CHANGED], 0);
 704 }
 705
 706 static void
 707 gtk_option_menu_select_first_sensitive (GtkOptionMenu *option_menu)
 708 {
 709   if (option_menu->menu)
 710     {
 711       GList *children = GTK_MENU_SHELL (option_menu->menu)->children;
 712       gint index = 0;
 713
 714       while (children)
 715         {
 716           if (gtk_widget_get_sensitive (children->data))
 717             {
 718               gtk_option_menu_set_history (option_menu, index);
 719               return;
 720             }
 721
 722           children = children->next;
 723           index++;
 724         }
 725     }
 726 }
 727
 728 static void
 729 gtk_option_menu_item_state_changed_cb (GtkWidget      *widget,
 730                                        GtkStateType    previous_state,
 731                                        GtkOptionMenu  *option_menu)
 732 {
 733   GtkWidget *child = GTK_BIN (option_menu)->child;
 734
 735   if (child && gtk_widget_get_sensitive (child) != gtk_widget_is_sensitive (widget))
 736     gtk_widget_set_sensitive (child, gtk_widget_is_sensitive (widget));
 737 }
 738
 739 static void
 740 gtk_option_menu_item_destroy_cb (GtkWidget     *widget,
 741                                  GtkOptionMenu *option_menu)
 742 {
 743   GtkWidget *child = GTK_BIN (option_menu)->child;
 744
 745   if (child)
 746     {
 747       g_object_ref (child);
 748       gtk_option_menu_remove_contents (option_menu);
 749       gtk_widget_destroy (child);
 750       g_object_unref (child);
 751
 752       gtk_option_menu_select_first_sensitive (option_menu);
 753     }
 754 }
 755
 756 static void
 757 gtk_option_menu_update_contents (GtkOptionMenu *option_menu)
 758 {
 759   GtkWidget *child;
 760   GtkRequisition child_requisition;
 761
 762   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 763
 764   if (option_menu->menu)
 765     {
 766       GtkWidget *old_item = option_menu->menu_item;
 767
 768       gtk_option_menu_remove_contents (option_menu);
 769
 770       option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 771       if (option_menu->menu_item)
 772         {
 773           g_object_ref (option_menu->menu_item);
 774           child = GTK_BIN (option_menu->menu_item)->child;
 775           if (child)
 776             {
 777               if (!gtk_widget_is_sensitive (option_menu->menu_item))
 778                 gtk_widget_set_sensitive (child, FALSE);
 779               gtk_widget_reparent (child, GTK_WIDGET (option_menu));
 780             }
 781
 782           g_signal_connect (option_menu->menu_item, "state-changed",
 783                             G_CALLBACK (gtk_option_menu_item_state_changed_cb), option_menu);
 784           g_signal_connect (option_menu->menu_item, "destroy",
 785                             G_CALLBACK (gtk_option_menu_item_destroy_cb), option_menu);
 786
 787           gtk_widget_size_request (child, &child_requisition);
 788           gtk_widget_size_allocate (GTK_WIDGET (option_menu),
 789                                     &(GTK_WIDGET (option_menu)->allocation));
 790
 791           if (GTK_WIDGET_DRAWABLE (option_menu))
 792             gtk_widget_queue_draw (GTK_WIDGET (option_menu));
 793         }
 794
 795       if (old_item != option_menu->menu_item)
 796         gtk_option_menu_changed (option_menu);
 797     }
 798 }
 799
 800 static void
 801 gtk_option_menu_remove_contents (GtkOptionMenu *option_menu)
 802 {
 803   GtkWidget *child;
 804
 805   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 806
 807   if (option_menu->menu_item)
 808     {
 809       child = GTK_BIN (option_menu)->child;
 810
 811       if (child)
 812         {
 813           gtk_widget_set_sensitive (child, TRUE);
 814           gtk_widget_set_state (child, GTK_STATE_NORMAL);
 815           gtk_widget_reparent (child, option_menu->menu_item);
 816         }
 817
 818       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 819                                             gtk_option_menu_item_state_changed_cb,
 820                                             option_menu);
 821       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 822                                             gtk_option_menu_item_destroy_cb,
 823                                             option_menu);
 824
 825       g_object_unref (option_menu->menu_item);
 826       option_menu->menu_item = NULL;
 827     }
 828 }
 829
 830 static void
 831 gtk_option_menu_calc_size (GtkOptionMenu *option_menu)
 832 {
 833   GtkWidget *child;
 834   GList *children;
 835   GtkRequisition child_requisition;
 836   gint old_width = option_menu->width;
 837   gint old_height = option_menu->height;
 838
 839   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 840
 841   option_menu->width = 0;
 842   option_menu->height = 0;
 843
 844   if (option_menu->menu)
 845     {
 846       children = GTK_MENU_SHELL (option_menu->menu)->children;
 847       while (children)
 848         {
 849           child = children->data;
 850           children = children->next;
 851
 852           if (gtk_widget_get_visible (child))
 853             {
 854               GtkWidget *inner = GTK_BIN (child)->child;
 855
 856               if (inner)
 857                 {
 858                   gtk_widget_size_request (inner, &child_requisition);
 859
 860                   option_menu->width = MAX (option_menu->width, child_requisition.width);
 861                   option_menu->height = MAX (option_menu->height, child_requisition.height);
 862                 }
 863             }
 864         }
 865     }
 866
 867   if (old_width != option_menu->width || old_height != option_menu->height)
 868     gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 869 }
 870
 871 static void
 872 gtk_option_menu_position (GtkMenu  *menu,
 873                           gint     *x,
 874                           gint     *y,
 875                           gboolean *push_in,
 876                           gpointer  user_data)
 877 {
 878   GtkOptionMenu *option_menu;
 879   GtkWidget *active;
 880   GtkWidget *child;
 881   GtkWidget *widget;
 882   GtkRequisition requisition;
 883   GList *children;
 884   gint screen_width;
 885   gint menu_xpos;
 886   gint menu_ypos;
 887   gint menu_width;
 888
 889   g_return_if_fail (GTK_IS_OPTION_MENU (user_data));
 890
 891   option_menu = GTK_OPTION_MENU (user_data);
 892   widget = GTK_WIDGET (option_menu);
 893
 894   gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition);
 895   menu_width = requisition.width;
 896
 897   active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 898   gdk_window_get_origin (widget->window, &menu_xpos, &menu_ypos);
 899
 900   /* set combo box type hint for menu popup */
 901   gtk_window_set_type_hint (GTK_WINDOW (GTK_MENU (option_menu->menu)->toplevel),
 902                             GDK_WINDOW_TYPE_HINT_COMBO);
 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_get_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   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 931     menu_xpos = menu_xpos + widget->allocation.width - menu_width;
 932
 933   /* Clamp the position on screen */
 934   screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
 935
 936   if (menu_xpos < 0)
 937     menu_xpos = 0;
 938   else if ((menu_xpos + menu_width) > screen_width)
 939     menu_xpos -= ((menu_xpos + menu_width) - screen_width);
 940
 941   *x = menu_xpos;
 942   *y = menu_ypos;
 943   *push_in = TRUE;
 944 }
 945
 946
 947 static void
 948 gtk_option_menu_show_all (GtkWidget *widget)
 949 {
 950   GtkContainer *container;
 951   GtkOptionMenu *option_menu;
 952
 953   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 954   container = GTK_CONTAINER (widget);
 955   option_menu = GTK_OPTION_MENU (widget);
 956
 957   gtk_widget_show (widget);
 958   gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
 959   if (option_menu->menu)
 960     gtk_widget_show_all (option_menu->menu);
 961   if (option_menu->menu_item)
 962     gtk_widget_show_all (option_menu->menu_item);
 963 }
 964
 965
 966 static void
 967 gtk_option_menu_hide_all (GtkWidget *widget)
 968 {
 969   GtkContainer *container;
 970
 971   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 972   container = GTK_CONTAINER (widget);
 973
 974   gtk_widget_hide (widget);
 975   gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
 976 }
 977
 978 static gboolean
 979 gtk_option_menu_mnemonic_activate (GtkWidget *widget,
 980                                    gboolean   group_cycling)
 981 {
 982   gtk_widget_grab_focus (widget);
 983   return TRUE;
 984 }
 985
 986 static gint
 987 gtk_option_menu_scroll_event (GtkWidget          *widget,
 988                               GdkEventScroll     *event)
 989 {
 990   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
 991   gint index;
 992   gint n_children;
 993   gint index_dir;
 994   GList *l;
 995   GtkMenuItem *item;
 996
 997   index = gtk_option_menu_get_history (option_menu);
 998
 999   if (index != -1)
1000     {
1001       n_children = g_list_length (GTK_MENU_SHELL (option_menu->menu)->children);
1002
1003       if (event->direction == GDK_SCROLL_UP)
1004         index_dir = -1;
1005       else
1006         index_dir = 1;
1007
1008
1009       while (TRUE)
1010         {
1011           index += index_dir;
1012
1013           if (index < 0)
1014             break;
1015           if (index >= n_children)
1016             break;
1017
1018           l = g_list_nth (GTK_MENU_SHELL (option_menu->menu)->children, index);
1019           item = GTK_MENU_ITEM (l->data);
1020           if (gtk_widget_get_visible (GTK_WIDGET (item)) &&
1021               gtk_widget_is_sensitive (GTK_WIDGET (item)))
1022             {
1023               gtk_option_menu_set_history (option_menu, index);
1024               gtk_menu_item_activate (GTK_MENU_ITEM (item));
1025               break;
1026             }
1027
1028         }
1029     }
1030
1031   return TRUE;
1032 }
1033
1034 #define __GTK_OPTION_MENU_C__
1035 #include "gtkaliasdef.c"
1036