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 #define GTK_DISABLE_DEPRECATED
  37
  38 #include "gtkprivate.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   LAST_PROP
 115 };
 116
 117 static guint signals[LAST_SIGNAL] = { 0 };
 118
 119 G_DEFINE_TYPE (GtkOptionMenu, gtk_option_menu, GTK_TYPE_BUTTON)
 120
 121 static void
 122 gtk_option_menu_class_init (GtkOptionMenuClass *class)
 123 {
 124   GObjectClass *gobject_class;
 125   GtkObjectClass *object_class;
 126   GtkWidgetClass *widget_class;
 127   GtkContainerClass *container_class;
 128
 129   gobject_class = (GObjectClass*) class;
 130   object_class = (GtkObjectClass*) class;
 131   widget_class = (GtkWidgetClass*) class;
 132   container_class = (GtkContainerClass*) class;
 133
 134   signals[CHANGED] =
 135     g_signal_new (I_("changed"),
 136                   G_OBJECT_CLASS_TYPE (class),
 137                   G_SIGNAL_RUN_LAST,
 138                   G_STRUCT_OFFSET (GtkOptionMenuClass, changed),
 139                   NULL, NULL,
 140                   _gtk_marshal_VOID__VOID,
 141                   G_TYPE_NONE, 0);
 142
 143   gobject_class->set_property = gtk_option_menu_set_property;
 144   gobject_class->get_property = gtk_option_menu_get_property;
 145   object_class->destroy = gtk_option_menu_destroy;
 146
 147   widget_class->size_request = gtk_option_menu_size_request;
 148   widget_class->size_allocate = gtk_option_menu_size_allocate;
 149   widget_class->expose_event = gtk_option_menu_expose;
 150   widget_class->button_press_event = gtk_option_menu_button_press;
 151   widget_class->key_press_event = gtk_option_menu_key_press;
 152   widget_class->scroll_event = gtk_option_menu_scroll_event;
 153   widget_class->show_all = gtk_option_menu_show_all;
 154   widget_class->hide_all = gtk_option_menu_hide_all;
 155   widget_class->mnemonic_activate = gtk_option_menu_mnemonic_activate;
 156
 157   container_class->child_type = gtk_option_menu_child_type;
 158
 159   g_object_class_install_property (gobject_class,
 160                                    PROP_MENU,
 161                                    g_param_spec_object ("menu",
 162                                                         P_("Menu"),
 163                                                         P_("The menu of options"),
 164                                                         GTK_TYPE_MENU,
 165                                                         GTK_PARAM_READWRITE));
 166
 167   gtk_widget_class_install_style_property (widget_class,
 168                                            g_param_spec_boxed ("indicator-size",
 169                                                                P_("Indicator Size"),
 170                                                                P_("Size of dropdown indicator"),
 171                                                                GTK_TYPE_REQUISITION,
 172                                                                GTK_PARAM_READABLE));
 173   gtk_widget_class_install_style_property (widget_class,
 174                                            g_param_spec_boxed ("indicator-spacing",
 175                                                                P_("Indicator Spacing"),
 176                                                                P_("Spacing around indicator"),
 177                                                                GTK_TYPE_BORDER,
 178                                                                GTK_PARAM_READABLE));
 179 }
 180
 181 static GType
 182 gtk_option_menu_child_type (GtkContainer       *container)
 183 {
 184   return G_TYPE_NONE;
 185 }
 186
 187 static void
 188 gtk_option_menu_init (GtkOptionMenu *option_menu)
 189 {
 190   GTK_WIDGET_SET_FLAGS (option_menu, GTK_CAN_FOCUS);
 191   GTK_WIDGET_UNSET_FLAGS (option_menu, GTK_CAN_DEFAULT | GTK_RECEIVES_DEFAULT);
 192
 193   option_menu->menu = NULL;
 194   option_menu->menu_item = NULL;
 195   option_menu->width = 0;
 196   option_menu->height = 0;
 197 }
 198
 199 GtkWidget*
 200 gtk_option_menu_new (void)
 201 {
 202   return g_object_new (GTK_TYPE_OPTION_MENU, NULL);
 203 }
 204
 205 GtkWidget*
 206 gtk_option_menu_get_menu (GtkOptionMenu *option_menu)
 207 {
 208   g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), NULL);
 209
 210   return option_menu->menu;
 211 }
 212
 213 static void
 214 gtk_option_menu_detacher (GtkWidget     *widget,
 215                           GtkMenu       *menu)
 216 {
 217   GtkOptionMenu *option_menu;
 218
 219   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 220
 221   option_menu = GTK_OPTION_MENU (widget);
 222   g_return_if_fail (option_menu->menu == (GtkWidget*) menu);
 223
 224   gtk_option_menu_remove_contents (option_menu);
 225   g_signal_handlers_disconnect_by_func (option_menu->menu,
 226                                         gtk_option_menu_selection_done,
 227                                         option_menu);
 228   g_signal_handlers_disconnect_by_func (option_menu->menu,
 229                                         gtk_option_menu_calc_size,
 230                                         option_menu);
 231
 232   option_menu->menu = NULL;
 233   g_object_notify (G_OBJECT (option_menu), "menu");
 234 }
 235
 236 void
 237 gtk_option_menu_set_menu (GtkOptionMenu *option_menu,
 238                           GtkWidget     *menu)
 239 {
 240   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 241   g_return_if_fail (GTK_IS_MENU (menu));
 242
 243   if (option_menu->menu != menu)
 244     {
 245       gtk_option_menu_remove_menu (option_menu);
 246
 247       option_menu->menu = menu;
 248       gtk_menu_attach_to_widget (GTK_MENU (menu),
 249                                  GTK_WIDGET (option_menu),
 250                                  gtk_option_menu_detacher);
 251
 252       gtk_option_menu_calc_size (option_menu);
 253
 254       g_signal_connect_after (option_menu->menu, "selection_done",
 255                               G_CALLBACK (gtk_option_menu_selection_done),
 256                               option_menu);
 257       g_signal_connect_swapped (option_menu->menu, "size_request",
 258                                 G_CALLBACK (gtk_option_menu_calc_size),
 259                                 option_menu);
 260
 261       if (GTK_WIDGET (option_menu)->parent)
 262         gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 263
 264       gtk_option_menu_update_contents (option_menu);
 265
 266       g_object_notify (G_OBJECT (option_menu), "menu");
 267     }
 268 }
 269
 270 void
 271 gtk_option_menu_remove_menu (GtkOptionMenu *option_menu)
 272 {
 273   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 274
 275   if (option_menu->menu)
 276     {
 277       if (GTK_MENU_SHELL (option_menu->menu)->active)
 278         gtk_menu_shell_cancel (GTK_MENU_SHELL (option_menu->menu));
 279
 280       gtk_menu_detach (GTK_MENU (option_menu->menu));
 281     }
 282 }
 283
 284 void
 285 gtk_option_menu_set_history (GtkOptionMenu *option_menu,
 286                              guint          index)
 287 {
 288   GtkWidget *menu_item;
 289
 290   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 291
 292   if (option_menu->menu)
 293     {
 294       gtk_menu_set_active (GTK_MENU (option_menu->menu), index);
 295       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 296
 297       if (menu_item != option_menu->menu_item)
 298         gtk_option_menu_update_contents (option_menu);
 299     }
 300 }
 301
 302 /**
 303  * gtk_option_menu_get_history:
 304  * @option_menu: a #GtkOptionMenu
 305  *
 306  * Retrieves the index of the currently selected menu item. The menu
 307  * items are numbered from top to bottom, starting with 0.
 308  *
 309  * Return value: index of the selected menu item, or -1 if there are no menu items
 310  * Deprecated: 2.4: Use #GtkComboBox instead.
 311  **/
 312 gint
 313 gtk_option_menu_get_history (GtkOptionMenu *option_menu)
 314 {
 315   GtkWidget *active_widget;
 316
 317   g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), -1);
 318
 319   if (option_menu->menu)
 320     {
 321       active_widget = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 322
 323       if (active_widget)
 324         return g_list_index (GTK_MENU_SHELL (option_menu->menu)->children,
 325                              active_widget);
 326       else
 327         return -1;
 328     }
 329   else
 330     return -1;
 331 }
 332
 333 static void
 334 gtk_option_menu_set_property (GObject            *object,
 335                               guint               prop_id,
 336                               const GValue       *value,
 337                               GParamSpec         *pspec)
 338 {
 339   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 340
 341   switch (prop_id)
 342     {
 343     case PROP_MENU:
 344       gtk_option_menu_set_menu (option_menu, g_value_get_object (value));
 345       break;
 346
 347     default:
 348       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 349       break;
 350     }
 351 }
 352
 353 static void
 354 gtk_option_menu_get_property (GObject            *object,
 355                               guint               prop_id,
 356                               GValue             *value,
 357                               GParamSpec         *pspec)
 358 {
 359   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 360
 361   switch (prop_id)
 362     {
 363     case PROP_MENU:
 364       g_value_set_object (value, option_menu->menu);
 365       break;
 366
 367     default:
 368       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 369       break;
 370     }
 371 }
 372
 373 static void
 374 gtk_option_menu_destroy (GtkObject *object)
 375 {
 376   GtkOptionMenu *option_menu;
 377
 378   g_return_if_fail (GTK_IS_OPTION_MENU (object));
 379
 380   option_menu = GTK_OPTION_MENU (object);
 381
 382   if (option_menu->menu)
 383     gtk_widget_destroy (option_menu->menu);
 384
 385   if (GTK_OBJECT_CLASS (gtk_option_menu_parent_class)->destroy)
 386     (* GTK_OBJECT_CLASS (gtk_option_menu_parent_class)->destroy) (object);
 387 }
 388
 389 static void
 390 gtk_option_menu_get_props (GtkOptionMenu       *option_menu,
 391                            GtkOptionMenuProps  *props)
 392 {
 393   GtkRequisition *indicator_size;
 394   GtkBorder *indicator_spacing;
 395
 396   gtk_widget_style_get (GTK_WIDGET (option_menu),
 397                         "indicator_size", &indicator_size,
 398                         "indicator_spacing", &indicator_spacing,
 399                         "interior_focus", &props->interior_focus,
 400                         "focus_line_width", &props->focus_width,
 401                         "focus_padding", &props->focus_pad,
 402                         NULL);
 403
 404   if (indicator_size)
 405     props->indicator_size = *indicator_size;
 406   else
 407     props->indicator_size = default_props.indicator_size;
 408
 409   if (indicator_spacing)
 410     props->indicator_spacing = *indicator_spacing;
 411   else
 412     props->indicator_spacing = default_props.indicator_spacing;
 413
 414   g_free (indicator_size);
 415   g_free (indicator_spacing);
 416 }
 417
 418 static void
 419 gtk_option_menu_size_request (GtkWidget      *widget,
 420                               GtkRequisition *requisition)
 421 {
 422   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
 423   GtkOptionMenuProps props;
 424   gint tmp;
 425   GtkRequisition child_requisition = { 0, 0 };
 426
 427   gtk_option_menu_get_props (option_menu, &props);
 428
 429   if (GTK_BIN (option_menu)->child && GTK_WIDGET_VISIBLE (GTK_BIN (option_menu)->child))
 430     {
 431       gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);
 432
 433       requisition->width += child_requisition.width;
 434       requisition->height += child_requisition.height;
 435     }
 436
 437   requisition->width = ((GTK_CONTAINER (widget)->border_width +
 438                          GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +
 439                         MAX (child_requisition.width, option_menu->width) +
 440                         props.indicator_size.width +
 441                         props.indicator_spacing.left + props.indicator_spacing.right +
 442                         CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);
 443   requisition->height = ((GTK_CONTAINER (widget)->border_width +
 444                           GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +
 445                          MAX (child_requisition.height, option_menu->height) +
 446                          CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);
 447
 448   tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +
 449          props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);
 450   requisition->height = MAX (requisition->height, tmp);
 451 }
 452
 453 static void
 454 gtk_option_menu_size_allocate (GtkWidget     *widget,
 455                                GtkAllocation *allocation)
 456 {
 457   GtkWidget *child;
 458   GtkButton *button = GTK_BUTTON (widget);
 459   GtkAllocation child_allocation;
 460   GtkOptionMenuProps props;
 461   gint border_width;
 462
 463   gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 464   border_width = GTK_CONTAINER (widget)->border_width;
 465
 466   widget->allocation = *allocation;
 467   if (GTK_WIDGET_REALIZED (widget))
 468     gdk_window_move_resize (button->event_window,
 469                             allocation->x + border_width, allocation->y + border_width,
 470                             allocation->width - border_width * 2, allocation->height - border_width * 2);
 471
 472   child = GTK_BIN (widget)->child;
 473   if (child && GTK_WIDGET_VISIBLE (child))
 474     {
 475       gint xthickness = GTK_WIDGET (widget)->style->xthickness;
 476       gint ythickness = GTK_WIDGET (widget)->style->ythickness;
 477
 478       child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;
 479       child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;
 480       child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -
 481                                     props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -
 482                                     CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);
 483       child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -
 484                                      CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);
 485
 486       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 487         child_allocation.x += props.indicator_size.width + props.indicator_spacing.left + props.indicator_spacing.right;
 488
 489       gtk_widget_size_allocate (child, &child_allocation);
 490     }
 491 }
 492
 493 static void
 494 gtk_option_menu_paint (GtkWidget    *widget,
 495                        GdkRectangle *area)
 496 {
 497   GdkRectangle button_area;
 498   GtkOptionMenuProps props;
 499   gint border_width;
 500   gint tab_x;
 501
 502   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 503   g_return_if_fail (area != NULL);
 504
 505   if (GTK_WIDGET_DRAWABLE (widget))
 506     {
 507       border_width = GTK_CONTAINER (widget)->border_width;
 508       gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 509
 510       button_area.x = widget->allocation.x + border_width;
 511       button_area.y = widget->allocation.y + border_width;
 512       button_area.width = widget->allocation.width - 2 * border_width;
 513       button_area.height = widget->allocation.height - 2 * border_width;
 514
 515       if (!props.interior_focus && GTK_WIDGET_HAS_FOCUS (widget))
 516         {
 517           button_area.x += props.focus_width + props.focus_pad;
 518           button_area.y += props.focus_width + props.focus_pad;
 519           button_area.width -= 2 * (props.focus_width + props.focus_pad);
 520           button_area.height -= 2 * (props.focus_width + props.focus_pad);
 521         }
 522
 523       gtk_paint_box (widget->style, widget->window,
 524                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 525                      area, widget, "optionmenu",
 526                      button_area.x, button_area.y,
 527                      button_area.width, button_area.height);
 528
 529       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 530         tab_x = button_area.x + props.indicator_spacing.right +
 531           widget->style->xthickness;
 532       else
 533         tab_x = button_area.x + button_area.width -
 534           props.indicator_size.width - props.indicator_spacing.right -
 535           widget->style->xthickness;
 536
 537       gtk_paint_tab (widget->style, widget->window,
 538                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 539                      area, widget, "optionmenutab",
 540                      tab_x,
 541                      button_area.y + (button_area.height - props.indicator_size.height) / 2,
 542                      props.indicator_size.width, props.indicator_size.height);
 543
 544       if (GTK_WIDGET_HAS_FOCUS (widget))
 545         {
 546           if (props.interior_focus)
 547             {
 548               button_area.x += widget->style->xthickness + props.focus_pad;
 549               button_area.y += widget->style->ythickness + props.focus_pad;
 550               button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +
 551                       props.indicator_spacing.left +
 552                       props.indicator_spacing.right +
 553                       props.indicator_size.width;
 554               button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);
 555               if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 556                 button_area.x += props.indicator_spacing.left +
 557                   props.indicator_spacing.right +
 558                   props.indicator_size.width;
 559             }
 560           else
 561             {
 562               button_area.x -= props.focus_width + props.focus_pad;
 563               button_area.y -= props.focus_width + props.focus_pad;
 564               button_area.width += 2 * (props.focus_width + props.focus_pad);
 565               button_area.height += 2 * (props.focus_width + props.focus_pad);
 566             }
 567
 568           gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 569                            area, widget, "button",
 570                            button_area.x,
 571                            button_area.y,
 572                            button_area.width,
 573                            button_area.height);
 574         }
 575     }
 576 }
 577
 578 static gint
 579 gtk_option_menu_expose (GtkWidget      *widget,
 580                         GdkEventExpose *event)
 581 {
 582   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 583   g_return_val_if_fail (event != NULL, FALSE);
 584
 585   if (GTK_WIDGET_DRAWABLE (widget))
 586     {
 587       gtk_option_menu_paint (widget, &event->area);
 588
 589
 590       /* The following code tries to draw the child in two places at
 591        * once. It fails miserably for several reasons
 592        *
 593        * - If the child is not no-window, removing generates
 594        *   more expose events. Bad, bad, bad.
 595        *
 596        * - Even if the child is no-window, removing it now (properly)
 597        *   clears the space where it was, so it does no good
 598        */
 599
 600 #if 0
 601       remove_child = FALSE;
 602       child = GTK_BUTTON (widget)->child;
 603
 604       if (!child)
 605         {
 606           if (!GTK_OPTION_MENU (widget)->menu)
 607             return FALSE;
 608           gtk_option_menu_update_contents (GTK_OPTION_MENU (widget));
 609           child = GTK_BUTTON (widget)->child;
 610           if (!child)
 611             return FALSE;
 612           remove_child = TRUE;
 613         }
 614
 615       child_event = *event;
 616
 617       if (GTK_WIDGET_NO_WINDOW (child) &&
 618           gtk_widget_intersect (child, &event->area, &child_event.area))
 619         gtk_widget_event (child, (GdkEvent*) &child_event);
 620
 621       if (remove_child)
 622         gtk_option_menu_remove_contents (GTK_OPTION_MENU (widget));
 623 #else
 624       if (GTK_BIN (widget)->child)
 625         gtk_container_propagate_expose (GTK_CONTAINER (widget),
 626                                         GTK_BIN (widget)->child,
 627                                         event);
 628 #endif /* 0 */
 629     }
 630
 631   return FALSE;
 632 }
 633
 634 static gint
 635 gtk_option_menu_button_press (GtkWidget      *widget,
 636                               GdkEventButton *event)
 637 {
 638   GtkOptionMenu *option_menu;
 639   GtkWidget *menu_item;
 640
 641   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 642   g_return_val_if_fail (event != NULL, FALSE);
 643
 644   option_menu = GTK_OPTION_MENU (widget);
 645
 646   if ((event->type == GDK_BUTTON_PRESS) &&
 647       (event->button == 1))
 648     {
 649       gtk_option_menu_remove_contents (option_menu);
 650       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 651                       gtk_option_menu_position, option_menu,
 652                       event->button, event->time);
 653       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 654       if (menu_item)
 655         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 656       return TRUE;
 657     }
 658
 659   return FALSE;
 660 }
 661
 662 static gint
 663 gtk_option_menu_key_press (GtkWidget   *widget,
 664                            GdkEventKey *event)
 665 {
 666   GtkOptionMenu *option_menu;
 667   GtkWidget *menu_item;
 668
 669   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 670   g_return_val_if_fail (event != NULL, FALSE);
 671
 672   option_menu = GTK_OPTION_MENU (widget);
 673
 674   switch (event->keyval)
 675     {
 676     case GDK_KP_Space:
 677     case GDK_space:
 678       gtk_option_menu_remove_contents (option_menu);
 679       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 680                       gtk_option_menu_position, option_menu,
 681                       0, event->time);
 682       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 683       if (menu_item)
 684         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 685       return TRUE;
 686     }
 687
 688   return FALSE;
 689 }
 690
 691 static void
 692 gtk_option_menu_selection_done (GtkMenuShell  *menu_shell,
 693                                 GtkOptionMenu *option_menu)
 694 {
 695   g_return_if_fail (menu_shell != NULL);
 696   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 697
 698   gtk_option_menu_update_contents (option_menu);
 699 }
 700
 701 static void
 702 gtk_option_menu_changed (GtkOptionMenu *option_menu)
 703 {
 704   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 705
 706   g_signal_emit (option_menu, signals[CHANGED], 0);
 707 }
 708
 709 static void
 710 gtk_option_menu_select_first_sensitive (GtkOptionMenu *option_menu)
 711 {
 712   if (option_menu->menu)
 713     {
 714       GList *children = GTK_MENU_SHELL (option_menu->menu)->children;
 715       gint index = 0;
 716
 717       while (children)
 718         {
 719           if (GTK_WIDGET_SENSITIVE (children->data))
 720             {
 721               gtk_option_menu_set_history (option_menu, index);
 722               return;
 723             }
 724
 725           children = children->next;
 726           index++;
 727         }
 728     }
 729 }
 730
 731 static void
 732 gtk_option_menu_item_state_changed_cb (GtkWidget      *widget,
 733                                        GtkStateType    previous_state,
 734                                        GtkOptionMenu  *option_menu)
 735 {
 736   GtkWidget *child = GTK_BIN (option_menu)->child;
 737
 738   if (child && GTK_WIDGET_SENSITIVE (child) != GTK_WIDGET_IS_SENSITIVE (widget))
 739     gtk_widget_set_sensitive (child, GTK_WIDGET_IS_SENSITIVE (widget));
 740 }
 741
 742 static void
 743 gtk_option_menu_item_destroy_cb (GtkWidget     *widget,
 744                                  GtkOptionMenu *option_menu)
 745 {
 746   GtkWidget *child = GTK_BIN (option_menu)->child;
 747
 748   if (child)
 749     {
 750       g_object_ref (child);
 751       gtk_option_menu_remove_contents (option_menu);
 752       gtk_widget_destroy (child);
 753       g_object_unref (child);
 754
 755       gtk_option_menu_select_first_sensitive (option_menu);
 756     }
 757 }
 758
 759 static void
 760 gtk_option_menu_update_contents (GtkOptionMenu *option_menu)
 761 {
 762   GtkWidget *child;
 763   GtkRequisition child_requisition;
 764
 765   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 766
 767   if (option_menu->menu)
 768     {
 769       GtkWidget *old_item = option_menu->menu_item;
 770
 771       gtk_option_menu_remove_contents (option_menu);
 772
 773       option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 774       if (option_menu->menu_item)
 775         {
 776           g_object_ref (option_menu->menu_item);
 777           child = GTK_BIN (option_menu->menu_item)->child;
 778           if (child)
 779             {
 780               if (!GTK_WIDGET_IS_SENSITIVE (option_menu->menu_item))
 781                 gtk_widget_set_sensitive (child, FALSE);
 782               gtk_widget_reparent (child, GTK_WIDGET (option_menu));
 783             }
 784
 785           g_signal_connect (option_menu->menu_item, "state_changed",
 786                             G_CALLBACK (gtk_option_menu_item_state_changed_cb), option_menu);
 787           g_signal_connect (option_menu->menu_item, "destroy",
 788                             G_CALLBACK (gtk_option_menu_item_destroy_cb), option_menu);
 789
 790           gtk_widget_size_request (child, &child_requisition);
 791           gtk_widget_size_allocate (GTK_WIDGET (option_menu),
 792                                     &(GTK_WIDGET (option_menu)->allocation));
 793
 794           if (GTK_WIDGET_DRAWABLE (option_menu))
 795             gtk_widget_queue_draw (GTK_WIDGET (option_menu));
 796         }
 797
 798       if (old_item != option_menu->menu_item)
 799         gtk_option_menu_changed (option_menu);
 800     }
 801 }
 802
 803 static void
 804 gtk_option_menu_remove_contents (GtkOptionMenu *option_menu)
 805 {
 806   GtkWidget *child;
 807
 808   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 809
 810   if (option_menu->menu_item)
 811     {
 812       child = GTK_BIN (option_menu)->child;
 813
 814       if (child)
 815         {
 816           gtk_widget_set_sensitive (child, TRUE);
 817           gtk_widget_set_state (child, GTK_STATE_NORMAL);
 818           gtk_widget_reparent (child, option_menu->menu_item);
 819         }
 820
 821       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 822                                             gtk_option_menu_item_state_changed_cb,
 823                                             option_menu);
 824       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 825                                             gtk_option_menu_item_destroy_cb,
 826                                             option_menu);
 827
 828       g_object_unref (option_menu->menu_item);
 829       option_menu->menu_item = NULL;
 830     }
 831 }
 832
 833 static void
 834 gtk_option_menu_calc_size (GtkOptionMenu *option_menu)
 835 {
 836   GtkWidget *child;
 837   GList *children;
 838   GtkRequisition child_requisition;
 839   gint old_width = option_menu->width;
 840   gint old_height = option_menu->height;
 841
 842   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 843
 844   option_menu->width = 0;
 845   option_menu->height = 0;
 846
 847   if (option_menu->menu)
 848     {
 849       children = GTK_MENU_SHELL (option_menu->menu)->children;
 850       while (children)
 851         {
 852           child = children->data;
 853           children = children->next;
 854
 855           if (GTK_WIDGET_VISIBLE (child))
 856             {
 857               GtkWidget *inner = GTK_BIN (child)->child;
 858
 859               if (inner)
 860                 {
 861                   gtk_widget_size_request (inner, &child_requisition);
 862
 863                   option_menu->width = MAX (option_menu->width, child_requisition.width);
 864                   option_menu->height = MAX (option_menu->height, child_requisition.height);
 865                 }
 866             }
 867         }
 868     }
 869
 870   if (old_width != option_menu->width || old_height != option_menu->height)
 871     gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 872 }
 873
 874 static void
 875 gtk_option_menu_position (GtkMenu  *menu,
 876                           gint     *x,
 877                           gint     *y,
 878                           gboolean *push_in,
 879                           gpointer  user_data)
 880 {
 881   GtkOptionMenu *option_menu;
 882   GtkWidget *active;
 883   GtkWidget *child;
 884   GtkWidget *widget;
 885   GtkRequisition requisition;
 886   GList *children;
 887   gint screen_width;
 888   gint menu_xpos;
 889   gint menu_ypos;
 890   gint menu_width;
 891
 892   g_return_if_fail (GTK_IS_OPTION_MENU (user_data));
 893
 894   option_menu = GTK_OPTION_MENU (user_data);
 895   widget = GTK_WIDGET (option_menu);
 896
 897   gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition);
 898   menu_width = requisition.width;
 899
 900   active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 901   gdk_window_get_origin (widget->window, &menu_xpos, &menu_ypos);
 902
 903   menu_xpos += widget->allocation.x;
 904   menu_ypos += widget->allocation.y + widget->allocation.height / 2 - 2;
 905
 906   if (active != NULL)
 907     {
 908       gtk_widget_get_child_requisition (active, &requisition);
 909       menu_ypos -= requisition.height / 2;
 910     }
 911
 912   children = GTK_MENU_SHELL (option_menu->menu)->children;
 913   while (children)
 914     {
 915       child = children->data;
 916
 917       if (active == child)
 918         break;
 919
 920       if (GTK_WIDGET_VISIBLE (child))
 921         {
 922           gtk_widget_get_child_requisition (child, &requisition);
 923           menu_ypos -= requisition.height;
 924         }
 925
 926       children = children->next;
 927     }
 928
 929   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 930     menu_xpos = menu_xpos + widget->allocation.width - menu_width;
 931
 932   /* Clamp the position on screen */
 933   screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
 934
 935   if (menu_xpos < 0)
 936     menu_xpos = 0;
 937   else if ((menu_xpos + menu_width) > screen_width)
 938     menu_xpos -= ((menu_xpos + menu_width) - screen_width);
 939
 940   *x = menu_xpos;
 941   *y = menu_ypos;
 942   *push_in = TRUE;
 943 }
 944
 945
 946 static void
 947 gtk_option_menu_show_all (GtkWidget *widget)
 948 {
 949   GtkContainer *container;
 950   GtkOptionMenu *option_menu;
 951
 952   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 953   container = GTK_CONTAINER (widget);
 954   option_menu = GTK_OPTION_MENU (widget);
 955
 956   gtk_widget_show (widget);
 957   gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
 958   if (option_menu->menu)
 959     gtk_widget_show_all (option_menu->menu);
 960   if (option_menu->menu_item)
 961     gtk_widget_show_all (option_menu->menu_item);
 962 }
 963
 964
 965 static void
 966 gtk_option_menu_hide_all (GtkWidget *widget)
 967 {
 968   GtkContainer *container;
 969
 970   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 971   container = GTK_CONTAINER (widget);
 972
 973   gtk_widget_hide (widget);
 974   gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
 975 }
 976
 977 static gboolean
 978 gtk_option_menu_mnemonic_activate (GtkWidget *widget,
 979                                    gboolean   group_cycling)
 980 {
 981   gtk_widget_grab_focus (widget);
 982   return TRUE;
 983 }
 984
 985 static gint
 986 gtk_option_menu_scroll_event (GtkWidget          *widget,
 987                               GdkEventScroll     *event)
 988 {
 989   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
 990   gint index;
 991   gint n_children;
 992   gint index_dir;
 993   GList *l;
 994   GtkMenuItem *item;
 995
 996   index = gtk_option_menu_get_history (option_menu);
 997
 998   if (index != -1)
 999     {
1000       n_children = g_list_length (GTK_MENU_SHELL (option_menu->menu)->children);
1001
1002       if (event->direction == GDK_SCROLL_UP)
1003         index_dir = -1;
1004       else
1005         index_dir = 1;
1006
1007
1008       while (TRUE)
1009         {
1010           index += index_dir;
1011
1012           if (index < 0)
1013             break;
1014           if (index >= n_children)
1015             break;
1016
1017           l = g_list_nth (GTK_MENU_SHELL (option_menu->menu)->children, index);
1018           item = GTK_MENU_ITEM (l->data);
1019           if (GTK_WIDGET_VISIBLE (item) && GTK_WIDGET_IS_SENSITIVE (item))
1020             {
1021               gtk_option_menu_set_history (option_menu, index);
1022               gtk_menu_item_activate (GTK_MENU_ITEM (item));
1023               break;
1024             }
1025
1026         }
1027     }
1028
1029   return TRUE;
1030 }
1031
1032 #define __GTK_OPTION_MENU_C__
1033 #include "gtkaliasdef.c"
1034