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

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include "gtkintl.h"
  28 #include "gtkmenu.h"
  29 #include "gtkmenuitem.h"
  30 #include "gtkmarshalers.h"
  31 #include "gdk/gdkkeysyms.h"
  32
  33 #undef GTK_DISABLE_DEPRECATED
  34 #include "gtkoptionmenu.h"
  35 #define GTK_DISABLE_DEPRECATED
  36
  37 #define CHILD_LEFT_SPACING        4
  38 #define CHILD_RIGHT_SPACING       1
  39 #define CHILD_TOP_SPACING         1
  40 #define CHILD_BOTTOM_SPACING      1
  41
  42 typedef struct _GtkOptionMenuProps GtkOptionMenuProps;
  43
  44 struct _GtkOptionMenuProps
  45 {
  46   gboolean interior_focus;
  47   GtkRequisition indicator_size;
  48   GtkBorder indicator_spacing;
  49   gint focus_width;
  50   gint focus_pad;
  51 };
  52
  53 static const GtkOptionMenuProps default_props = {
  54   TRUE,
  55   { 7, 13 },
  56   { 7, 5, 2, 2 },               /* Left, right, top, bottom */
  57   1,
  58   0
  59 };
  60
  61 static void gtk_option_menu_class_init      (GtkOptionMenuClass *klass);
  62 static void gtk_option_menu_init            (GtkOptionMenu      *option_menu);
  63 static void gtk_option_menu_destroy         (GtkObject          *object);
  64 static void gtk_option_menu_set_property    (GObject            *object,
  65                                              guint               prop_id,
  66                                              const GValue       *value,
  67                                              GParamSpec         *pspec);
  68 static void gtk_option_menu_get_property    (GObject            *object,
  69                                              guint               prop_id,
  70                                              GValue             *value,
  71                                              GParamSpec         *pspec);
  72 static void gtk_option_menu_size_request    (GtkWidget          *widget,
  73                                              GtkRequisition     *requisition);
  74 static void gtk_option_menu_size_allocate   (GtkWidget          *widget,
  75                                              GtkAllocation      *allocation);
  76 static void gtk_option_menu_paint           (GtkWidget          *widget,
  77                                              GdkRectangle       *area);
  78 static gint gtk_option_menu_expose          (GtkWidget          *widget,
  79                                              GdkEventExpose     *event);
  80 static gint gtk_option_menu_button_press    (GtkWidget          *widget,
  81                                              GdkEventButton     *event);
  82 static gint gtk_option_menu_key_press       (GtkWidget          *widget,
  83                                              GdkEventKey        *event);
  84 static void gtk_option_menu_selection_done  (GtkMenuShell       *menu_shell,
  85                                              GtkOptionMenu      *option_menu);
  86 static void gtk_option_menu_update_contents (GtkOptionMenu      *option_menu);
  87 static void gtk_option_menu_remove_contents (GtkOptionMenu      *option_menu);
  88 static void gtk_option_menu_calc_size       (GtkOptionMenu      *option_menu);
  89 static void gtk_option_menu_position        (GtkMenu            *menu,
  90                                              gint               *x,
  91                                              gint               *y,
  92                                              gint               *scroll_offet,
  93                                              gpointer            user_data);
  94 static void gtk_option_menu_show_all        (GtkWidget          *widget);
  95 static void gtk_option_menu_hide_all        (GtkWidget          *widget);
  96 static gboolean gtk_option_menu_mnemonic_activate (GtkWidget    *widget,
  97                                                    gboolean      group_cycling);
  98 static GType gtk_option_menu_child_type   (GtkContainer       *container);
  99 static gint gtk_option_menu_scroll_event    (GtkWidget          *widget,
 100                                              GdkEventScroll     *event);
 101
 102 enum
 103 {
 104   CHANGED,
 105   LAST_SIGNAL
 106 };
 107
 108 enum
 109 {
 110   PROP_0,
 111   PROP_MENU,
 112   LAST_PROP
 113 };
 114
 115 static GtkButtonClass *parent_class = NULL;
 116 static guint           signals[LAST_SIGNAL] = { 0 };
 117
 118
 119 GType
 120 gtk_option_menu_get_type (void)
 121 {
 122   static GType option_menu_type = 0;
 123
 124   if (!option_menu_type)
 125     {
 126       static const GTypeInfo option_menu_info =
 127       {
 128         sizeof (GtkOptionMenuClass),
 129         NULL,           /* base_init */
 130         NULL,           /* base_finalize */
 131         (GClassInitFunc) gtk_option_menu_class_init,
 132         NULL,           /* class_finalize */
 133         NULL,           /* class_data */
 134         sizeof (GtkOptionMenu),
 135         0,              /* n_preallocs */
 136         (GInstanceInitFunc) gtk_option_menu_init,
 137       };
 138
 139       option_menu_type =
 140         g_type_register_static (GTK_TYPE_BUTTON, "GtkOptionMenu",
 141                                 &option_menu_info, 0);
 142     }
 143
 144   return option_menu_type;
 145 }
 146
 147 static void
 148 gtk_option_menu_class_init (GtkOptionMenuClass *class)
 149 {
 150   GObjectClass *gobject_class;
 151   GtkObjectClass *object_class;
 152   GtkWidgetClass *widget_class;
 153   GtkButtonClass *button_class;
 154   GtkContainerClass *container_class;
 155
 156   gobject_class = (GObjectClass*) class;
 157   object_class = (GtkObjectClass*) class;
 158   widget_class = (GtkWidgetClass*) class;
 159   button_class = (GtkButtonClass*) class;
 160   container_class = (GtkContainerClass*) class;
 161
 162   parent_class = g_type_class_peek_parent (class);
 163
 164   signals[CHANGED] =
 165     g_signal_new ("changed",
 166                   G_OBJECT_CLASS_TYPE (class),
 167                   G_SIGNAL_RUN_LAST,
 168                   G_STRUCT_OFFSET (GtkOptionMenuClass, changed),
 169                   NULL, NULL,
 170                   _gtk_marshal_VOID__VOID,
 171                   G_TYPE_NONE, 0);
 172
 173   gobject_class->set_property = gtk_option_menu_set_property;
 174   gobject_class->get_property = gtk_option_menu_get_property;
 175   object_class->destroy = gtk_option_menu_destroy;
 176
 177   widget_class->size_request = gtk_option_menu_size_request;
 178   widget_class->size_allocate = gtk_option_menu_size_allocate;
 179   widget_class->expose_event = gtk_option_menu_expose;
 180   widget_class->button_press_event = gtk_option_menu_button_press;
 181   widget_class->key_press_event = gtk_option_menu_key_press;
 182   widget_class->scroll_event = gtk_option_menu_scroll_event;
 183   widget_class->show_all = gtk_option_menu_show_all;
 184   widget_class->hide_all = gtk_option_menu_hide_all;
 185   widget_class->mnemonic_activate = gtk_option_menu_mnemonic_activate;
 186
 187   container_class->child_type = gtk_option_menu_child_type;
 188
 189   g_object_class_install_property (gobject_class,
 190                                    PROP_MENU,
 191                                    g_param_spec_object ("menu",
 192                                                         _("Menu"),
 193                                                         _("The menu of options"),
 194                                                         GTK_TYPE_MENU,
 195                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 196
 197   gtk_widget_class_install_style_property (widget_class,
 198                                            g_param_spec_boxed ("indicator_size",
 199                                                                _("Indicator Size"),
 200                                                                _("Size of dropdown indicator"),
 201                                                                GTK_TYPE_REQUISITION,
 202                                                                G_PARAM_READABLE));
 203   gtk_widget_class_install_style_property (widget_class,
 204                                            g_param_spec_boxed ("indicator_spacing",
 205                                                                _("Indicator Spacing"),
 206                                                                _("Spacing around indicator"),
 207                                                                GTK_TYPE_BORDER,
 208                                                                G_PARAM_READABLE));
 209 }
 210
 211 static GType
 212 gtk_option_menu_child_type (GtkContainer       *container)
 213 {
 214   return G_TYPE_NONE;
 215 }
 216
 217 static void
 218 gtk_option_menu_init (GtkOptionMenu *option_menu)
 219 {
 220   GTK_WIDGET_SET_FLAGS (option_menu, GTK_CAN_FOCUS);
 221   GTK_WIDGET_UNSET_FLAGS (option_menu, GTK_CAN_DEFAULT | GTK_RECEIVES_DEFAULT);
 222
 223   option_menu->menu = NULL;
 224   option_menu->menu_item = NULL;
 225   option_menu->width = 0;
 226   option_menu->height = 0;
 227 }
 228
 229 GtkWidget*
 230 gtk_option_menu_new (void)
 231 {
 232   return g_object_new (GTK_TYPE_OPTION_MENU, NULL);
 233 }
 234
 235 GtkWidget*
 236 gtk_option_menu_get_menu (GtkOptionMenu *option_menu)
 237 {
 238   g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), NULL);
 239
 240   return option_menu->menu;
 241 }
 242
 243 static void
 244 gtk_option_menu_detacher (GtkWidget     *widget,
 245                           GtkMenu       *menu)
 246 {
 247   GtkOptionMenu *option_menu;
 248
 249   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 250
 251   option_menu = GTK_OPTION_MENU (widget);
 252   g_return_if_fail (option_menu->menu == (GtkWidget*) menu);
 253
 254   gtk_option_menu_remove_contents (option_menu);
 255   g_signal_handlers_disconnect_by_func (option_menu->menu,
 256                                         gtk_option_menu_selection_done,
 257                                         option_menu);
 258   g_signal_handlers_disconnect_by_func (option_menu->menu,
 259                                         gtk_option_menu_calc_size,
 260                                         option_menu);
 261
 262   option_menu->menu = NULL;
 263   g_object_notify (G_OBJECT (option_menu), "menu");
 264 }
 265
 266 void
 267 gtk_option_menu_set_menu (GtkOptionMenu *option_menu,
 268                           GtkWidget     *menu)
 269 {
 270   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 271   g_return_if_fail (GTK_IS_MENU (menu));
 272
 273   if (option_menu->menu != menu)
 274     {
 275       gtk_option_menu_remove_menu (option_menu);
 276
 277       option_menu->menu = menu;
 278       gtk_menu_attach_to_widget (GTK_MENU (menu),
 279                                  GTK_WIDGET (option_menu),
 280                                  gtk_option_menu_detacher);
 281
 282       gtk_option_menu_calc_size (option_menu);
 283
 284       g_signal_connect_after (option_menu->menu, "selection_done",
 285                               G_CALLBACK (gtk_option_menu_selection_done),
 286                               option_menu);
 287       g_signal_connect_swapped (option_menu->menu, "size_request",
 288                                 G_CALLBACK (gtk_option_menu_calc_size),
 289                                 option_menu);
 290
 291       if (GTK_WIDGET (option_menu)->parent)
 292         gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 293
 294       gtk_option_menu_update_contents (option_menu);
 295
 296       g_object_notify (G_OBJECT (option_menu), "menu");
 297     }
 298 }
 299
 300 void
 301 gtk_option_menu_remove_menu (GtkOptionMenu *option_menu)
 302 {
 303   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 304
 305   if (option_menu->menu)
 306     {
 307       if (GTK_MENU_SHELL (option_menu->menu)->active)
 308         g_signal_emit_by_name (option_menu->menu, "cancel", 0);
 309
 310       gtk_menu_detach (GTK_MENU (option_menu->menu));
 311     }
 312 }
 313
 314 void
 315 gtk_option_menu_set_history (GtkOptionMenu *option_menu,
 316                              guint          index)
 317 {
 318   GtkWidget *menu_item;
 319
 320   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 321
 322   if (option_menu->menu)
 323     {
 324       gtk_menu_set_active (GTK_MENU (option_menu->menu), index);
 325       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 326
 327       if (menu_item != option_menu->menu_item)
 328         gtk_option_menu_update_contents (option_menu);
 329     }
 330 }
 331
 332 /**
 333  * gtk_option_menu_get_history:
 334  * @option_menu: a #GtkOptionMenu
 335  *
 336  * Retrieves the index of the currently selected menu item. The menu
 337  * items are numbered from top to bottom, starting with 0.
 338  *
 339  * Return value: index of the selected menu item, or -1 if there are no menu items
 340  **/
 341 gint
 342 gtk_option_menu_get_history (GtkOptionMenu *option_menu)
 343 {
 344   GtkWidget *active_widget;
 345
 346   g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), -1);
 347
 348   if (option_menu->menu)
 349     {
 350       active_widget = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 351
 352       if (active_widget)
 353         return g_list_index (GTK_MENU_SHELL (option_menu->menu)->children,
 354                              active_widget);
 355       else
 356         return -1;
 357     }
 358   else
 359     return -1;
 360 }
 361
 362 static void
 363 gtk_option_menu_set_property (GObject            *object,
 364                               guint               prop_id,
 365                               const GValue       *value,
 366                               GParamSpec         *pspec)
 367 {
 368   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 369
 370   switch (prop_id)
 371     {
 372     case PROP_MENU:
 373       gtk_option_menu_set_menu (option_menu, g_value_get_object (value));
 374       break;
 375
 376     default:
 377       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 378       break;
 379     }
 380 }
 381
 382 static void
 383 gtk_option_menu_get_property (GObject            *object,
 384                               guint               prop_id,
 385                               GValue             *value,
 386                               GParamSpec         *pspec)
 387 {
 388   GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
 389
 390   switch (prop_id)
 391     {
 392     case PROP_MENU:
 393       g_value_set_object (value, option_menu->menu);
 394       break;
 395
 396     default:
 397       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 398       break;
 399     }
 400 }
 401
 402 static void
 403 gtk_option_menu_destroy (GtkObject *object)
 404 {
 405   GtkOptionMenu *option_menu;
 406
 407   g_return_if_fail (GTK_IS_OPTION_MENU (object));
 408
 409   option_menu = GTK_OPTION_MENU (object);
 410
 411   if (option_menu->menu)
 412     gtk_widget_destroy (option_menu->menu);
 413
 414   if (GTK_OBJECT_CLASS (parent_class)->destroy)
 415     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
 416 }
 417
 418 static void
 419 gtk_option_menu_get_props (GtkOptionMenu       *option_menu,
 420                            GtkOptionMenuProps  *props)
 421 {
 422   GtkRequisition *indicator_size;
 423   GtkBorder *indicator_spacing;
 424
 425   gtk_widget_style_get (GTK_WIDGET (option_menu),
 426                         "indicator_size", &indicator_size,
 427                         "indicator_spacing", &indicator_spacing,
 428                         "interior_focus", &props->interior_focus,
 429                         "focus_line_width", &props->focus_width,
 430                         "focus_padding", &props->focus_pad,
 431                         NULL);
 432
 433   if (indicator_size)
 434     props->indicator_size = *indicator_size;
 435   else
 436     props->indicator_size = default_props.indicator_size;
 437
 438   if (indicator_spacing)
 439     props->indicator_spacing = *indicator_spacing;
 440   else
 441     props->indicator_spacing = default_props.indicator_spacing;
 442
 443   g_free (indicator_size);
 444   g_free (indicator_spacing);
 445 }
 446
 447 static void
 448 gtk_option_menu_size_request (GtkWidget      *widget,
 449                               GtkRequisition *requisition)
 450 {
 451   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
 452   GtkOptionMenuProps props;
 453   gint tmp;
 454   GtkRequisition child_requisition = { 0, 0 };
 455
 456   gtk_option_menu_get_props (option_menu, &props);
 457
 458   if (GTK_BIN (option_menu)->child && GTK_WIDGET_VISIBLE (GTK_BIN (option_menu)->child))
 459     {
 460       gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);
 461
 462       requisition->width += child_requisition.width;
 463       requisition->height += child_requisition.height;
 464     }
 465
 466   requisition->width = ((GTK_CONTAINER (widget)->border_width +
 467                          GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +
 468                         MAX (child_requisition.width, option_menu->width) +
 469                         props.indicator_size.width +
 470                         props.indicator_spacing.left + props.indicator_spacing.right +
 471                         CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);
 472   requisition->height = ((GTK_CONTAINER (widget)->border_width +
 473                           GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +
 474                          MAX (child_requisition.height, option_menu->height) +
 475                          CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);
 476
 477   tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +
 478          props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);
 479   requisition->height = MAX (requisition->height, tmp);
 480 }
 481
 482 static void
 483 gtk_option_menu_size_allocate (GtkWidget     *widget,
 484                                GtkAllocation *allocation)
 485 {
 486   GtkWidget *child;
 487   GtkButton *button = GTK_BUTTON (widget);
 488   GtkAllocation child_allocation;
 489   GtkOptionMenuProps props;
 490   gint border_width;
 491
 492   gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 493   border_width = GTK_CONTAINER (widget)->border_width;
 494
 495   widget->allocation = *allocation;
 496   if (GTK_WIDGET_REALIZED (widget))
 497     gdk_window_move_resize (button->event_window,
 498                             allocation->x + border_width, allocation->y + border_width,
 499                             allocation->width - border_width * 2, allocation->height - border_width * 2);
 500
 501   child = GTK_BIN (widget)->child;
 502   if (child && GTK_WIDGET_VISIBLE (child))
 503     {
 504       gint xthickness = GTK_WIDGET (widget)->style->xthickness;
 505       gint ythickness = GTK_WIDGET (widget)->style->ythickness;
 506
 507       child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;
 508       child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;
 509       child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -
 510                                     props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -
 511                                     CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);
 512       child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -
 513                                      CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);
 514
 515       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 516         child_allocation.x += props.indicator_size.width + props.indicator_spacing.left + props.indicator_spacing.right;
 517
 518       gtk_widget_size_allocate (child, &child_allocation);
 519     }
 520 }
 521
 522 static void
 523 gtk_option_menu_paint (GtkWidget    *widget,
 524                        GdkRectangle *area)
 525 {
 526   GdkRectangle button_area;
 527   GtkOptionMenuProps props;
 528   gint border_width;
 529   gint tab_x;
 530
 531   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 532   g_return_if_fail (area != NULL);
 533
 534   if (GTK_WIDGET_DRAWABLE (widget))
 535     {
 536       border_width = GTK_CONTAINER (widget)->border_width;
 537       gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
 538
 539       button_area.x = widget->allocation.x + border_width;
 540       button_area.y = widget->allocation.y + border_width;
 541       button_area.width = widget->allocation.width - 2 * border_width;
 542       button_area.height = widget->allocation.height - 2 * border_width;
 543
 544       if (!props.interior_focus && GTK_WIDGET_HAS_FOCUS (widget))
 545         {
 546           button_area.x += props.focus_width + props.focus_pad;
 547           button_area.y += props.focus_width + props.focus_pad;
 548           button_area.width -= 2 * (props.focus_width + props.focus_pad);
 549           button_area.height -= 2 * (props.focus_width + props.focus_pad);
 550         }
 551
 552       gtk_paint_box (widget->style, widget->window,
 553                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 554                      area, widget, "optionmenu",
 555                      button_area.x, button_area.y,
 556                      button_area.width, button_area.height);
 557
 558       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 559         tab_x = button_area.x + props.indicator_spacing.right +
 560           widget->style->xthickness;
 561       else
 562         tab_x = button_area.x + button_area.width -
 563           props.indicator_size.width - props.indicator_spacing.right -
 564           widget->style->xthickness;
 565
 566       gtk_paint_tab (widget->style, widget->window,
 567                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 568                      area, widget, "optionmenutab",
 569                      tab_x,
 570                      button_area.y + (button_area.height - props.indicator_size.height) / 2,
 571                      props.indicator_size.width, props.indicator_size.height);
 572
 573       if (GTK_WIDGET_HAS_FOCUS (widget))
 574         {
 575           if (props.interior_focus)
 576             {
 577               button_area.x += widget->style->xthickness + props.focus_pad;
 578               button_area.y += widget->style->ythickness + props.focus_pad;
 579               button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +
 580                       props.indicator_spacing.left +
 581                       props.indicator_spacing.right +
 582                       props.indicator_size.width;
 583               button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);
 584               if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 585                 button_area.x += props.indicator_spacing.left +
 586                   props.indicator_spacing.right +
 587                   props.indicator_size.width;
 588             }
 589           else
 590             {
 591               button_area.x -= props.focus_width + props.focus_pad;
 592               button_area.y -= props.focus_width + props.focus_pad;
 593               button_area.width += 2 * (props.focus_width + props.focus_pad);
 594               button_area.height += 2 * (props.focus_width + props.focus_pad);
 595             }
 596
 597           gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 598                            area, widget, "button",
 599                            button_area.x,
 600                            button_area.y,
 601                            button_area.width,
 602                            button_area.height);
 603         }
 604     }
 605 }
 606
 607 static gint
 608 gtk_option_menu_expose (GtkWidget      *widget,
 609                         GdkEventExpose *event)
 610 {
 611   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 612   g_return_val_if_fail (event != NULL, FALSE);
 613
 614   if (GTK_WIDGET_DRAWABLE (widget))
 615     {
 616       gtk_option_menu_paint (widget, &event->area);
 617
 618
 619       /* The following code tries to draw the child in two places at
 620        * once. It fails miserably for several reasons
 621        *
 622        * - If the child is not no-window, removing generates
 623        *   more expose events. Bad, bad, bad.
 624        *
 625        * - Even if the child is no-window, removing it now (properly)
 626        *   clears the space where it was, so it does no good
 627        */
 628
 629 #if 0
 630       remove_child = FALSE;
 631       child = GTK_BUTTON (widget)->child;
 632
 633       if (!child)
 634         {
 635           if (!GTK_OPTION_MENU (widget)->menu)
 636             return FALSE;
 637           gtk_option_menu_update_contents (GTK_OPTION_MENU (widget));
 638           child = GTK_BUTTON (widget)->child;
 639           if (!child)
 640             return FALSE;
 641           remove_child = TRUE;
 642         }
 643
 644       child_event = *event;
 645
 646       if (GTK_WIDGET_NO_WINDOW (child) &&
 647           gtk_widget_intersect (child, &event->area, &child_event.area))
 648         gtk_widget_event (child, (GdkEvent*) &child_event);
 649
 650       if (remove_child)
 651         gtk_option_menu_remove_contents (GTK_OPTION_MENU (widget));
 652 #else
 653       if (GTK_BIN (widget)->child)
 654         gtk_container_propagate_expose (GTK_CONTAINER (widget),
 655                                         GTK_BIN (widget)->child,
 656                                         event);
 657 #endif /* 0 */
 658     }
 659
 660   return FALSE;
 661 }
 662
 663 static gint
 664 gtk_option_menu_button_press (GtkWidget      *widget,
 665                               GdkEventButton *event)
 666 {
 667   GtkOptionMenu *option_menu;
 668   GtkWidget *menu_item;
 669
 670   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 671   g_return_val_if_fail (event != NULL, FALSE);
 672
 673   option_menu = GTK_OPTION_MENU (widget);
 674
 675   if ((event->type == GDK_BUTTON_PRESS) &&
 676       (event->button == 1))
 677     {
 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                       event->button, 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 gint
 692 gtk_option_menu_key_press (GtkWidget   *widget,
 693                            GdkEventKey *event)
 694 {
 695   GtkOptionMenu *option_menu;
 696   GtkWidget *menu_item;
 697
 698   g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
 699   g_return_val_if_fail (event != NULL, FALSE);
 700
 701   option_menu = GTK_OPTION_MENU (widget);
 702
 703   switch (event->keyval)
 704     {
 705     case GDK_KP_Space:
 706     case GDK_space:
 707       gtk_option_menu_remove_contents (option_menu);
 708       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 709                       gtk_option_menu_position, option_menu,
 710                       0, event->time);
 711       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 712       if (menu_item)
 713         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 714       return TRUE;
 715     }
 716
 717   return FALSE;
 718 }
 719
 720 static void
 721 gtk_option_menu_selection_done (GtkMenuShell  *menu_shell,
 722                                 GtkOptionMenu *option_menu)
 723 {
 724   g_return_if_fail (menu_shell != NULL);
 725   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 726
 727   gtk_option_menu_update_contents (option_menu);
 728 }
 729
 730 static void
 731 gtk_option_menu_changed (GtkOptionMenu *option_menu)
 732 {
 733   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 734
 735   g_signal_emit (option_menu, signals[CHANGED], 0);
 736 }
 737
 738 static void
 739 gtk_option_menu_select_first_sensitive (GtkOptionMenu *option_menu)
 740 {
 741   if (option_menu->menu)
 742     {
 743       GList *children = GTK_MENU_SHELL (option_menu->menu)->children;
 744       gint index = 0;
 745
 746       while (children)
 747         {
 748           if (GTK_WIDGET_SENSITIVE (children->data))
 749             {
 750               gtk_option_menu_set_history (option_menu, index);
 751               return;
 752             }
 753
 754           children = children->next;
 755           index++;
 756         }
 757     }
 758 }
 759
 760 static void
 761 gtk_option_menu_item_state_changed_cb (GtkWidget      *widget,
 762                                        GtkStateType    previous_state,
 763                                        GtkOptionMenu  *option_menu)
 764 {
 765   GtkWidget *child = GTK_BIN (option_menu)->child;
 766
 767   if (child && GTK_WIDGET_SENSITIVE (child) != GTK_WIDGET_IS_SENSITIVE (widget))
 768     gtk_widget_set_sensitive (child, GTK_WIDGET_IS_SENSITIVE (widget));
 769 }
 770
 771 static void
 772 gtk_option_menu_item_destroy_cb (GtkWidget     *widget,
 773                                  GtkOptionMenu *option_menu)
 774 {
 775   GtkWidget *child = GTK_BIN (option_menu)->child;
 776
 777   if (child)
 778     {
 779       g_object_ref (child);
 780       gtk_option_menu_remove_contents (option_menu);
 781       gtk_widget_destroy (child);
 782       g_object_unref (child);
 783
 784       gtk_option_menu_select_first_sensitive (option_menu);
 785     }
 786 }
 787
 788 static void
 789 gtk_option_menu_update_contents (GtkOptionMenu *option_menu)
 790 {
 791   GtkWidget *child;
 792   GtkRequisition child_requisition;
 793
 794   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 795
 796   if (option_menu->menu)
 797     {
 798       GtkWidget *old_item = option_menu->menu_item;
 799
 800       gtk_option_menu_remove_contents (option_menu);
 801
 802       option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 803       if (option_menu->menu_item)
 804         {
 805           g_object_ref (option_menu->menu_item);
 806           child = GTK_BIN (option_menu->menu_item)->child;
 807           if (child)
 808             {
 809               if (!GTK_WIDGET_IS_SENSITIVE (option_menu->menu_item))
 810                 gtk_widget_set_sensitive (child, FALSE);
 811               gtk_widget_reparent (child, GTK_WIDGET (option_menu));
 812             }
 813
 814           g_signal_connect (option_menu->menu_item, "state_changed",
 815                             G_CALLBACK (gtk_option_menu_item_state_changed_cb), option_menu);
 816           g_signal_connect (option_menu->menu_item, "destroy",
 817                             G_CALLBACK (gtk_option_menu_item_destroy_cb), option_menu);
 818
 819           gtk_widget_size_request (child, &child_requisition);
 820           gtk_widget_size_allocate (GTK_WIDGET (option_menu),
 821                                     &(GTK_WIDGET (option_menu)->allocation));
 822
 823           if (GTK_WIDGET_DRAWABLE (option_menu))
 824             gtk_widget_queue_draw (GTK_WIDGET (option_menu));
 825         }
 826
 827       if (old_item != option_menu->menu_item)
 828         gtk_option_menu_changed (option_menu);
 829     }
 830 }
 831
 832 static void
 833 gtk_option_menu_remove_contents (GtkOptionMenu *option_menu)
 834 {
 835   GtkWidget *child;
 836
 837   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 838
 839   if (option_menu->menu_item)
 840     {
 841       child = GTK_BIN (option_menu)->child;
 842
 843       if (child)
 844         {
 845           gtk_widget_set_sensitive (child, TRUE);
 846           gtk_widget_set_state (child, GTK_STATE_NORMAL);
 847           gtk_widget_reparent (child, option_menu->menu_item);
 848         }
 849
 850       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 851                                             gtk_option_menu_item_state_changed_cb,
 852                                             option_menu);
 853       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 854                                             gtk_option_menu_item_destroy_cb,
 855                                             option_menu);
 856
 857       g_object_unref (option_menu->menu_item);
 858       option_menu->menu_item = NULL;
 859     }
 860 }
 861
 862 static void
 863 gtk_option_menu_calc_size (GtkOptionMenu *option_menu)
 864 {
 865   GtkWidget *child;
 866   GList *children;
 867   GtkRequisition child_requisition;
 868   gint old_width = option_menu->width;
 869   gint old_height = option_menu->height;
 870
 871   g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
 872
 873   option_menu->width = 0;
 874   option_menu->height = 0;
 875
 876   if (option_menu->menu)
 877     {
 878       children = GTK_MENU_SHELL (option_menu->menu)->children;
 879       while (children)
 880         {
 881           child = children->data;
 882           children = children->next;
 883
 884           if (GTK_WIDGET_VISIBLE (child))
 885             {
 886               GtkWidget *inner = GTK_BIN (child)->child;
 887
 888               if (inner)
 889                 {
 890                   gtk_widget_size_request (inner, &child_requisition);
 891
 892                   option_menu->width = MAX (option_menu->width, child_requisition.width);
 893                   option_menu->height = MAX (option_menu->height, child_requisition.height);
 894                 }
 895             }
 896         }
 897     }
 898
 899   if (old_width != option_menu->width || old_height != option_menu->height)
 900     gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 901 }
 902
 903 static void
 904 gtk_option_menu_position (GtkMenu  *menu,
 905                           gint     *x,
 906                           gint     *y,
 907                           gboolean *push_in,
 908                           gpointer  user_data)
 909 {
 910   GtkOptionMenu *option_menu;
 911   GtkWidget *active;
 912   GtkWidget *child;
 913   GtkWidget *widget;
 914   GtkRequisition requisition;
 915   GList *children;
 916   gint screen_width;
 917   gint menu_xpos;
 918   gint menu_ypos;
 919   gint menu_width;
 920
 921   g_return_if_fail (GTK_IS_OPTION_MENU (user_data));
 922
 923   option_menu = GTK_OPTION_MENU (user_data);
 924   widget = GTK_WIDGET (option_menu);
 925
 926   gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition);
 927   menu_width = requisition.width;
 928
 929   active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 930   gdk_window_get_origin (widget->window, &menu_xpos, &menu_ypos);
 931
 932   menu_xpos += widget->allocation.x;
 933   menu_ypos += widget->allocation.y + widget->allocation.height / 2 - 2;
 934
 935   if (active != NULL)
 936     {
 937       gtk_widget_get_child_requisition (active, &requisition);
 938       menu_ypos -= requisition.height / 2;
 939     }
 940
 941   children = GTK_MENU_SHELL (option_menu->menu)->children;
 942   while (children)
 943     {
 944       child = children->data;
 945
 946       if (active == child)
 947         break;
 948
 949       if (GTK_WIDGET_VISIBLE (child))
 950         {
 951           gtk_widget_get_child_requisition (child, &requisition);
 952           menu_ypos -= requisition.height;
 953         }
 954
 955       children = children->next;
 956     }
 957
 958   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 959     menu_xpos = menu_xpos + widget->allocation.width - menu_width;
 960
 961   /* Clamp the position on screen */
 962   screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
 963
 964   if (menu_xpos < 0)
 965     menu_xpos = 0;
 966   else if ((menu_xpos + menu_width) > screen_width)
 967     menu_xpos -= ((menu_xpos + menu_width) - screen_width);
 968
 969   *x = menu_xpos;
 970   *y = menu_ypos;
 971   *push_in = TRUE;
 972 }
 973
 974
 975 static void
 976 gtk_option_menu_show_all (GtkWidget *widget)
 977 {
 978   GtkContainer *container;
 979   GtkOptionMenu *option_menu;
 980
 981   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
 982   container = GTK_CONTAINER (widget);
 983   option_menu = GTK_OPTION_MENU (widget);
 984
 985   gtk_widget_show (widget);
 986   gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
 987   if (option_menu->menu)
 988     gtk_widget_show_all (option_menu->menu);
 989   if (option_menu->menu_item)
 990     gtk_widget_show_all (option_menu->menu_item);
 991 }
 992
 993
 994 static void
 995 gtk_option_menu_hide_all (GtkWidget *widget)
 996 {
 997   GtkContainer *container;
 998
 999   g_return_if_fail (GTK_IS_OPTION_MENU (widget));
1000   container = GTK_CONTAINER (widget);
1001
1002   gtk_widget_hide (widget);
1003   gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
1004 }
1005
1006 static gboolean
1007 gtk_option_menu_mnemonic_activate (GtkWidget *widget,
1008                                    gboolean   group_cycling)
1009 {
1010   gtk_widget_grab_focus (widget);
1011   return TRUE;
1012 }
1013
1014 static gint
1015 gtk_option_menu_scroll_event (GtkWidget          *widget,
1016                               GdkEventScroll     *event)
1017 {
1018   GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
1019   gint index;
1020   gint n_children;
1021   gint index_dir;
1022   GList *l;
1023   GtkMenuItem *item;
1024
1025   index = gtk_option_menu_get_history (option_menu);
1026
1027   if (index != -1)
1028     {
1029       n_children = g_list_length (GTK_MENU_SHELL (option_menu->menu)->children);
1030
1031       if (event->direction == GDK_SCROLL_UP)
1032         index_dir = -1;
1033       else
1034         index_dir = 1;
1035
1036
1037       while (TRUE)
1038         {
1039           index += index_dir;
1040
1041           if (index < 0)
1042             break;
1043           if (index >= n_children)
1044             break;
1045
1046           l = g_list_nth (GTK_MENU_SHELL (option_menu->menu)->children, index);
1047           item = GTK_MENU_ITEM (l->data);
1048           if (GTK_WIDGET_VISIBLE (item) && GTK_WIDGET_IS_SENSITIVE (item))
1049             {
1050               gtk_option_menu_set_history (option_menu, index);
1051               gtk_menu_item_activate (GTK_MENU_ITEM (item));
1052               break;
1053             }
1054
1055         }
1056     }
1057
1058   return TRUE;
1059 }
1060