src/gtk/gtkcmoptionmenu.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 <glib.h>
  29 #include <gtk/gtk.h>
  30 #include <gdk/gdkkeysyms.h>
  31
  32 #include "claws-marshal.h"
  33 #include "gtkcmoptionmenu.h"
  34
  35 #define CHILD_LEFT_SPACING        4
  36 #define CHILD_RIGHT_SPACING       1
  37 #define CHILD_TOP_SPACING         1
  38 #define CHILD_BOTTOM_SPACING      1
  39
  40 typedef struct _GtkCMOptionMenuProps GtkCMOptionMenuProps;
  41
  42 struct _GtkCMOptionMenuProps
  43 {
  44   gboolean interior_focus;
  45   GtkRequisition indicator_size;
  46   GtkBorder indicator_spacing;
  47   gint focus_width;
  48   gint focus_pad;
  49 };
  50
  51 static const GtkCMOptionMenuProps default_props = {
  52   TRUE,
  53   { 7, 13 },
  54   { 7, 5, 2, 2 },               /* Left, right, top, bottom */
  55   1,
  56   0
  57 };
  58
  59 static void gtk_cmoption_menu_destroy         (GtkObject          *object);
  60 static void gtk_cmoption_menu_set_property    (GObject            *object,
  61                                              guint               prop_id,
  62                                              const GValue       *value,
  63                                              GParamSpec         *pspec);
  64 static void gtk_cmoption_menu_get_property    (GObject            *object,
  65                                              guint               prop_id,
  66                                              GValue             *value,
  67                                              GParamSpec         *pspec);
  68 static void gtk_cmoption_menu_size_request    (GtkWidget          *widget,
  69                                              GtkRequisition     *requisition);
  70 static void gtk_cmoption_menu_size_allocate   (GtkWidget          *widget,
  71                                              GtkAllocation      *allocation);
  72 static void gtk_cmoption_menu_paint           (GtkWidget          *widget,
  73                                              GdkRectangle       *area);
  74 static gint gtk_cmoption_menu_expose          (GtkWidget          *widget,
  75                                              GdkEventExpose     *event);
  76 static gint gtk_cmoption_menu_button_press    (GtkWidget          *widget,
  77                                              GdkEventButton     *event);
  78 static gint gtk_cmoption_menu_key_press     (GtkWidget          *widget,
  79                                              GdkEventKey        *event);
  80 static void gtk_cmoption_menu_selection_done  (GtkMenuShell       *menu_shell,
  81                                              GtkCMOptionMenu      *option_menu);
  82 static void gtk_cmoption_menu_update_contents (GtkCMOptionMenu      *option_menu);
  83 static void gtk_cmoption_menu_remove_contents (GtkCMOptionMenu      *option_menu);
  84 static void gtk_cmoption_menu_calc_size       (GtkCMOptionMenu      *option_menu);
  85 static void gtk_cmoption_menu_position        (GtkMenu            *menu,
  86                                              gint               *x,
  87                                              gint               *y,
  88                                              gint               *scroll_offet,
  89                                              gpointer            user_data);
  90 static void gtk_cmoption_menu_show_all        (GtkWidget          *widget);
  91 static void gtk_cmoption_menu_hide_all        (GtkWidget          *widget);
  92 static gboolean gtk_cmoption_menu_mnemonic_activate (GtkWidget    *widget,
  93                                                    gboolean      group_cycling);
  94 static GType gtk_cmoption_menu_child_type   (GtkContainer       *container);
  95 static gint gtk_cmoption_menu_scroll_event    (GtkWidget          *widget,
  96                                              GdkEventScroll     *event);
  97
  98 enum
  99 {
 100   CHANGED,
 101   LAST_SIGNAL
 102 };
 103
 104 enum
 105 {
 106   PROP_0,
 107   PROP_MENU,
 108   LAST_PROP
 109 };
 110
 111 static guint signals[LAST_SIGNAL] = { 0 };
 112
 113 G_DEFINE_TYPE (GtkCMOptionMenu, gtk_cmoption_menu, GTK_TYPE_BUTTON)
 114
 115 static void
 116 gtk_cmoption_menu_class_init (GtkCMOptionMenuClass *class)
 117 {
 118   GObjectClass *gobject_class;
 119   GtkObjectClass *object_class;
 120   GtkWidgetClass *widget_class;
 121   GtkContainerClass *container_class;
 122
 123   gobject_class = (GObjectClass*) class;
 124   object_class = (GtkObjectClass*) class;
 125   widget_class = (GtkWidgetClass*) class;
 126   container_class = (GtkContainerClass*) class;
 127
 128   signals[CHANGED] =
 129     g_signal_new (("changed"),
 130                   G_OBJECT_CLASS_TYPE (class),
 131                   G_SIGNAL_RUN_LAST,
 132                   G_STRUCT_OFFSET (GtkCMOptionMenuClass, changed),
 133                   NULL, NULL,
 134                   claws_marshal_VOID__VOID,
 135                   G_TYPE_NONE, 0);
 136
 137   gobject_class->set_property = gtk_cmoption_menu_set_property;
 138   gobject_class->get_property = gtk_cmoption_menu_get_property;
 139   object_class->destroy = gtk_cmoption_menu_destroy;
 140
 141   widget_class->size_request = gtk_cmoption_menu_size_request;
 142   widget_class->size_allocate = gtk_cmoption_menu_size_allocate;
 143   widget_class->expose_event = gtk_cmoption_menu_expose;
 144   widget_class->button_press_event = gtk_cmoption_menu_button_press;
 145   widget_class->key_press_event = gtk_cmoption_menu_key_press;
 146   widget_class->scroll_event = gtk_cmoption_menu_scroll_event;
 147   widget_class->show_all = gtk_cmoption_menu_show_all;
 148   widget_class->hide_all = gtk_cmoption_menu_hide_all;
 149   widget_class->mnemonic_activate = gtk_cmoption_menu_mnemonic_activate;
 150
 151   container_class->child_type = gtk_cmoption_menu_child_type;
 152
 153   g_object_class_install_property (gobject_class,
 154                                    PROP_MENU,
 155                                    g_param_spec_object ("menu",
 156                                                         ("Menu"),
 157                                                         ("The menu of options"),
 158                                                         GTK_TYPE_MENU,
 159                                                         G_PARAM_READWRITE));
 160
 161   gtk_widget_class_install_style_property (widget_class,
 162                                            g_param_spec_boxed ("indicator-size",
 163                                                                ("Indicator Size"),
 164                                                                ("Size of dropdown indicator"),
 165                                                                GTK_TYPE_REQUISITION,
 166                                                                G_PARAM_READABLE));
 167   gtk_widget_class_install_style_property (widget_class,
 168                                            g_param_spec_boxed ("indicator-spacing",
 169                                                                ("Indicator Spacing"),
 170                                                                ("Spacing around indicator"),
 171                                                                GTK_TYPE_BORDER,
 172                                                                G_PARAM_READABLE));
 173 }
 174
 175 static GType
 176 gtk_cmoption_menu_child_type (GtkContainer       *container)
 177 {
 178   return G_TYPE_NONE;
 179 }
 180
 181 static void
 182 gtk_cmoption_menu_init (GtkCMOptionMenu *option_menu)
 183 {
 184   GTK_WIDGET_SET_FLAGS (option_menu, GTK_CAN_FOCUS);
 185   GTK_WIDGET_UNSET_FLAGS (option_menu, GTK_CAN_DEFAULT | GTK_RECEIVES_DEFAULT);
 186
 187   option_menu->menu = NULL;
 188   option_menu->menu_item = NULL;
 189   option_menu->width = 0;
 190   option_menu->height = 0;
 191 }
 192
 193 GtkWidget*
 194 gtk_cmoption_menu_new (void)
 195 {
 196   return g_object_new (GTK_TYPE_CMOPTION_MENU, NULL);
 197 }
 198
 199 GtkWidget*
 200 gtk_cmoption_menu_get_menu (GtkCMOptionMenu *option_menu)
 201 {
 202   g_return_val_if_fail (GTK_IS_CMOPTION_MENU (option_menu), NULL);
 203
 204   return option_menu->menu;
 205 }
 206
 207 static void
 208 gtk_cmoption_menu_detacher (GtkWidget     *widget,
 209                           GtkMenu       *menu)
 210 {
 211   GtkCMOptionMenu *option_menu;
 212
 213   g_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 214
 215   option_menu = GTK_CMOPTION_MENU (widget);
 216   g_return_if_fail (option_menu->menu == (GtkWidget*) menu);
 217
 218   gtk_cmoption_menu_remove_contents (option_menu);
 219   g_signal_handlers_disconnect_by_func (option_menu->menu,
 220                                         gtk_cmoption_menu_selection_done,
 221                                         option_menu);
 222   g_signal_handlers_disconnect_by_func (option_menu->menu,
 223                                         gtk_cmoption_menu_calc_size,
 224                                         option_menu);
 225
 226   option_menu->menu = NULL;
 227   g_object_notify (G_OBJECT (option_menu), "menu");
 228 }
 229
 230 void
 231 gtk_cmoption_menu_set_menu (GtkCMOptionMenu *option_menu,
 232                           GtkWidget     *menu)
 233 {
 234   g_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 235   g_return_if_fail (GTK_IS_MENU (menu));
 236
 237   if (option_menu->menu != menu)
 238     {
 239       gtk_cmoption_menu_remove_menu (option_menu);
 240
 241       option_menu->menu = menu;
 242       gtk_menu_attach_to_widget (GTK_MENU (menu),
 243                                  GTK_WIDGET (option_menu),
 244                                  gtk_cmoption_menu_detacher);
 245
 246       gtk_cmoption_menu_calc_size (option_menu);
 247
 248       g_signal_connect_after (option_menu->menu, "selection-done",
 249                               G_CALLBACK (gtk_cmoption_menu_selection_done),
 250                               option_menu);
 251       g_signal_connect_swapped (option_menu->menu, "size_request",
 252                                 G_CALLBACK (gtk_cmoption_menu_calc_size),
 253                                 option_menu);
 254
 255       if (GTK_WIDGET (option_menu)->parent)
 256         gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 257
 258       gtk_cmoption_menu_update_contents (option_menu);
 259
 260       g_object_notify (G_OBJECT (option_menu), "menu");
 261     }
 262 }
 263
 264 void
 265 gtk_cmoption_menu_remove_menu (GtkCMOptionMenu *option_menu)
 266 {
 267   g_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 268
 269   if (option_menu->menu)
 270     {
 271       if (GTK_MENU_SHELL (option_menu->menu)->active)
 272         gtk_menu_shell_cancel (GTK_MENU_SHELL (option_menu->menu));
 273
 274       gtk_menu_detach (GTK_MENU (option_menu->menu));
 275     }
 276 }
 277
 278 void
 279 gtk_cmoption_menu_set_history (GtkCMOptionMenu *option_menu,
 280                              guint          index)
 281 {
 282   GtkWidget *menu_item;
 283
 284   g_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 285
 286   if (option_menu->menu)
 287     {
 288       gtk_menu_set_active (GTK_MENU (option_menu->menu), index);
 289       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 290
 291       if (menu_item != option_menu->menu_item)
 292         gtk_cmoption_menu_update_contents (option_menu);
 293     }
 294 }
 295
 296 /**
 297  * gtk_cmoption_menu_get_history:
 298  * @option_menu: a #GtkCMOptionMenu
 299  *
 300  * Retrieves the index of the currently selected menu item. The menu
 301  * items are numbered from top to bottom, starting with 0.
 302  *
 303  * Return value: index of the selected menu item, or -1 if there are no menu items
 304  * Deprecated: 2.4: Use #GtkComboBox instead.
 305  **/
 306 gint
 307 gtk_cmoption_menu_get_history (GtkCMOptionMenu *option_menu)
 308 {
 309   GtkWidget *active_widget;
 310
 311   g_return_val_if_fail (GTK_IS_CMOPTION_MENU (option_menu), -1);
 312
 313   if (option_menu->menu)
 314     {
 315       active_widget = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 316
 317       if (active_widget)
 318         return g_list_index (GTK_MENU_SHELL (option_menu->menu)->children,
 319                              active_widget);
 320       else
 321         return -1;
 322     }
 323   else
 324     return -1;
 325 }
 326
 327 static void
 328 gtk_cmoption_menu_set_property (GObject            *object,
 329                               guint               prop_id,
 330                               const GValue       *value,
 331                               GParamSpec         *pspec)
 332 {
 333   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (object);
 334
 335   switch (prop_id)
 336     {
 337     case PROP_MENU:
 338       gtk_cmoption_menu_set_menu (option_menu, g_value_get_object (value));
 339       break;
 340
 341     default:
 342       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 343       break;
 344     }
 345 }
 346
 347 static void
 348 gtk_cmoption_menu_get_property (GObject            *object,
 349                               guint               prop_id,
 350                               GValue             *value,
 351                               GParamSpec         *pspec)
 352 {
 353   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (object);
 354
 355   switch (prop_id)
 356     {
 357     case PROP_MENU:
 358       g_value_set_object (value, option_menu->menu);
 359       break;
 360
 361     default:
 362       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 363       break;
 364     }
 365 }
 366
 367 static void
 368 gtk_cmoption_menu_destroy (GtkObject *object)
 369 {
 370   GtkCMOptionMenu *option_menu;
 371
 372   g_return_if_fail (GTK_IS_CMOPTION_MENU (object));
 373
 374   option_menu = GTK_CMOPTION_MENU (object);
 375
 376   if (option_menu->menu)
 377     gtk_widget_destroy (option_menu->menu);
 378
 379   if (GTK_OBJECT_CLASS (gtk_cmoption_menu_parent_class)->destroy)
 380     (* GTK_OBJECT_CLASS (gtk_cmoption_menu_parent_class)->destroy) (object);
 381 }
 382
 383 static void
 384 gtk_cmoption_menu_get_props (GtkCMOptionMenu       *option_menu,
 385                            GtkCMOptionMenuProps  *props)
 386 {
 387   GtkRequisition *indicator_size;
 388   GtkBorder *indicator_spacing;
 389
 390   gtk_widget_style_get (GTK_WIDGET (option_menu),
 391                         "indicator-size", &indicator_size,
 392                         "indicator-spacing", &indicator_spacing,
 393                         "interior-focus", &props->interior_focus,
 394                         "focus-line-width", &props->focus_width,
 395                         "focus-padding", &props->focus_pad,
 396                         NULL);
 397
 398   if (indicator_size)
 399     props->indicator_size = *indicator_size;
 400   else
 401     props->indicator_size = default_props.indicator_size;
 402
 403   if (indicator_spacing)
 404     props->indicator_spacing = *indicator_spacing;
 405   else
 406     props->indicator_spacing = default_props.indicator_spacing;
 407
 408   gtk_requisition_free (indicator_size);
 409   gtk_border_free (indicator_spacing);
 410 }
 411
 412 static void
 413 gtk_cmoption_menu_size_request (GtkWidget      *widget,
 414                               GtkRequisition *requisition)
 415 {
 416   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (widget);
 417   GtkCMOptionMenuProps props;
 418   gint tmp;
 419   GtkRequisition child_requisition = { 0, 0 };
 420
 421   gtk_cmoption_menu_get_props (option_menu, &props);
 422
 423   if (GTK_BIN (option_menu)->child && GTK_WIDGET_VISIBLE (GTK_BIN (option_menu)->child))
 424     {
 425       gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);
 426
 427       requisition->width += child_requisition.width;
 428       requisition->height += child_requisition.height;
 429     }
 430
 431   requisition->width = ((GTK_CONTAINER (widget)->border_width +
 432                          GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +
 433                         MAX (child_requisition.width, option_menu->width) +
 434                         props.indicator_size.width +
 435                         props.indicator_spacing.left + props.indicator_spacing.right +
 436                         CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);
 437   requisition->height = ((GTK_CONTAINER (widget)->border_width +
 438                           GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +
 439                          MAX (child_requisition.height, option_menu->height) +
 440                          CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);
 441
 442   tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +
 443          props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);
 444   requisition->height = MAX (requisition->height, tmp);
 445 }
 446
 447 static void
 448 gtk_cmoption_menu_size_allocate (GtkWidget     *widget,
 449                                GtkAllocation *allocation)
 450 {
 451   GtkWidget *child;
 452   GtkButton *button = GTK_BUTTON (widget);
 453   GtkAllocation child_allocation;
 454   GtkCMOptionMenuProps props;
 455   gint border_width;
 456
 457   gtk_cmoption_menu_get_props (GTK_CMOPTION_MENU (widget), &props);
 458   border_width = GTK_CONTAINER (widget)->border_width;
 459
 460   widget->allocation = *allocation;
 461   if (GTK_WIDGET_REALIZED (widget))
 462     gdk_window_move_resize (button->event_window,
 463                             allocation->x + border_width, allocation->y + border_width,
 464                             allocation->width - border_width * 2, allocation->height - border_width * 2);
 465
 466   child = GTK_BIN (widget)->child;
 467   if (child && GTK_WIDGET_VISIBLE (child))
 468     {
 469       gint xthickness = GTK_WIDGET (widget)->style->xthickness;
 470       gint ythickness = GTK_WIDGET (widget)->style->ythickness;
 471
 472       child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;
 473       child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;
 474       child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -
 475                                     props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -
 476                                     CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);
 477       child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -
 478                                      CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);
 479
 480       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 481         child_allocation.x += props.indicator_size.width + props.indicator_spacing.left + props.indicator_spacing.right;
 482
 483       gtk_widget_size_allocate (child, &child_allocation);
 484     }
 485 }
 486
 487 static void
 488 gtk_cmoption_menu_paint (GtkWidget    *widget,
 489                        GdkRectangle *area)
 490 {
 491   GdkRectangle button_area;
 492   GtkCMOptionMenuProps props;
 493   gint border_width;
 494   gint tab_x;
 495
 496   g_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 497   g_return_if_fail (area != NULL);
 498
 499   if (GTK_WIDGET_DRAWABLE (widget))
 500     {
 501       border_width = GTK_CONTAINER (widget)->border_width;
 502       gtk_cmoption_menu_get_props (GTK_CMOPTION_MENU (widget), &props);
 503
 504       button_area.x = widget->allocation.x + border_width;
 505       button_area.y = widget->allocation.y + border_width;
 506       button_area.width = widget->allocation.width - 2 * border_width;
 507       button_area.height = widget->allocation.height - 2 * border_width;
 508
 509       if (!props.interior_focus && GTK_WIDGET_HAS_FOCUS (widget))
 510         {
 511           button_area.x += props.focus_width + props.focus_pad;
 512           button_area.y += props.focus_width + props.focus_pad;
 513           button_area.width -= 2 * (props.focus_width + props.focus_pad);
 514           button_area.height -= 2 * (props.focus_width + props.focus_pad);
 515         }
 516
 517       gtk_paint_box (widget->style, widget->window,
 518                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 519                      area, widget, "optionmenu",
 520                      button_area.x, button_area.y,
 521                      button_area.width, button_area.height);
 522
 523       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 524         tab_x = button_area.x + props.indicator_spacing.right +
 525           widget->style->xthickness;
 526       else
 527         tab_x = button_area.x + button_area.width -
 528           props.indicator_size.width - props.indicator_spacing.right -
 529           widget->style->xthickness;
 530
 531       gtk_paint_tab (widget->style, widget->window,
 532                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 533                      area, widget, "optionmenutab",
 534                      tab_x,
 535                      button_area.y + (button_area.height - props.indicator_size.height) / 2,
 536                      props.indicator_size.width, props.indicator_size.height);
 537
 538       if (GTK_WIDGET_HAS_FOCUS (widget))
 539         {
 540           if (props.interior_focus)
 541             {
 542               button_area.x += widget->style->xthickness + props.focus_pad;
 543               button_area.y += widget->style->ythickness + props.focus_pad;
 544               button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +
 545                       props.indicator_spacing.left +
 546                       props.indicator_spacing.right +
 547                       props.indicator_size.width;
 548               button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);
 549               if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 550                 button_area.x += props.indicator_spacing.left +
 551                   props.indicator_spacing.right +
 552                   props.indicator_size.width;
 553             }
 554           else
 555             {
 556               button_area.x -= props.focus_width + props.focus_pad;
 557               button_area.y -= props.focus_width + props.focus_pad;
 558               button_area.width += 2 * (props.focus_width + props.focus_pad);
 559               button_area.height += 2 * (props.focus_width + props.focus_pad);
 560             }
 561
 562           gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 563                            area, widget, "button",
 564                            button_area.x,
 565                            button_area.y,
 566                            button_area.width,
 567                            button_area.height);
 568         }
 569     }
 570 }
 571
 572 static gint
 573 gtk_cmoption_menu_expose (GtkWidget      *widget,
 574                         GdkEventExpose *event)
 575 {
 576   g_return_val_if_fail (GTK_IS_CMOPTION_MENU (widget), FALSE);
 577   g_return_val_if_fail (event != NULL, FALSE);
 578
 579   if (GTK_WIDGET_DRAWABLE (widget))
 580     {
 581       gtk_cmoption_menu_paint (widget, &event->area);
 582
 583
 584       /* The following code tries to draw the child in two places at
 585        * once. It fails miserably for several reasons
 586        *
 587        * - If the child is not no-window, removing generates
 588        *   more expose events. Bad, bad, bad.
 589        *
 590        * - Even if the child is no-window, removing it now (properly)
 591        *   clears the space where it was, so it does no good
 592        */
 593
 594 #if 0
 595       remove_child = FALSE;
 596       child = GTK_BUTTON (widget)->child;
 597
 598       if (!child)
 599         {
 600           if (!GTK_CMOPTION_MENU (widget)->menu)
 601             return FALSE;
 602           gtk_cmoption_menu_update_contents (GTK_CMOPTION_MENU (widget));
 603           child = GTK_BUTTON (widget)->child;
 604           if (!child)
 605             return FALSE;
 606           remove_child = TRUE;
 607         }
 608
 609       child_event = *event;
 610
 611       if (GTK_WIDGET_NO_WINDOW (child) &&
 612           gtk_widget_intersect (child, &event->area, &child_event.area))
 613         gtk_widget_event (child, (GdkEvent*) &child_event);
 614
 615       if (remove_child)
 616         gtk_cmoption_menu_remove_contents (GTK_CMOPTION_MENU (widget));
 617 #else
 618       if (GTK_BIN (widget)->child)
 619         gtk_container_propagate_expose (GTK_CONTAINER (widget),
 620                                         GTK_BIN (widget)->child,
 621                                         event);
 622 #endif /* 0 */
 623     }
 624
 625   return FALSE;
 626 }
 627
 628 static gint
 629 gtk_cmoption_menu_button_press (GtkWidget      *widget,
 630                               GdkEventButton *event)
 631 {
 632   GtkCMOptionMenu *option_menu;
 633   GtkWidget *menu_item;
 634
 635   g_return_val_if_fail (GTK_IS_CMOPTION_MENU (widget), FALSE);
 636   g_return_val_if_fail (event != NULL, FALSE);
 637
 638   option_menu = GTK_CMOPTION_MENU (widget);
 639
 640   if ((event->type == GDK_BUTTON_PRESS) &&
 641       (event->button == 1))
 642     {
 643       gtk_cmoption_menu_remove_contents (option_menu);
 644       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 645                       gtk_cmoption_menu_position, option_menu,
 646                       event->button, event->time);
 647       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 648       if (menu_item)
 649         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 650       return TRUE;
 651     }
 652
 653   return FALSE;
 654 }
 655
 656 static gint
 657 gtk_cmoption_menu_key_press (GtkWidget   *widget,
 658                            GdkEventKey *event)
 659 {
 660   GtkCMOptionMenu *option_menu;
 661   GtkWidget *menu_item;
 662
 663   g_return_val_if_fail (GTK_IS_CMOPTION_MENU (widget), FALSE);
 664   g_return_val_if_fail (event != NULL, FALSE);
 665
 666   option_menu = GTK_CMOPTION_MENU (widget);
 667
 668   switch (event->keyval)
 669     {
 670     case GDK_KP_Space:
 671     case GDK_space:
 672       gtk_cmoption_menu_remove_contents (option_menu);
 673       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 674                       gtk_cmoption_menu_position, option_menu,
 675                       0, event->time);
 676       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 677       if (menu_item)
 678         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 679       return TRUE;
 680     }
 681
 682   return FALSE;
 683 }
 684
 685 static void
 686 gtk_cmoption_menu_selection_done (GtkMenuShell  *menu_shell,
 687                                 GtkCMOptionMenu *option_menu)
 688 {
 689   g_return_if_fail (menu_shell != NULL);
 690   g_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 691
 692   gtk_cmoption_menu_update_contents (option_menu);
 693 }
 694
 695 static void
 696 gtk_cmoption_menu_changed (GtkCMOptionMenu *option_menu)
 697 {
 698   g_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 699
 700   g_signal_emit (option_menu, signals[CHANGED], 0);
 701 }
 702
 703 static void
 704 gtk_cmoption_menu_select_first_sensitive (GtkCMOptionMenu *option_menu)
 705 {
 706   if (option_menu->menu)
 707     {
 708       GList *children = GTK_MENU_SHELL (option_menu->menu)->children;
 709       gint index = 0;
 710
 711       while (children)
 712         {
 713           if (GTK_WIDGET_SENSITIVE (children->data))
 714             {
 715               gtk_cmoption_menu_set_history (option_menu, index);
 716               return;
 717             }
 718
 719           children = children->next;
 720           index++;
 721         }
 722     }
 723 }
 724
 725 static void
 726 gtk_cmoption_menu_item_state_changed_cb (GtkWidget      *widget,
 727                                        GtkStateType    previous_state,
 728                                        GtkCMOptionMenu  *option_menu)
 729 {
 730   GtkWidget *child = GTK_BIN (option_menu)->child;
 731
 732   if (child && GTK_WIDGET_SENSITIVE (child) != GTK_WIDGET_IS_SENSITIVE (widget))
 733     gtk_widget_set_sensitive (child, GTK_WIDGET_IS_SENSITIVE (widget));
 734 }
 735
 736 static void
 737 gtk_cmoption_menu_item_destroy_cb (GtkWidget     *widget,
 738                                  GtkCMOptionMenu *option_menu)
 739 {
 740   GtkWidget *child = GTK_BIN (option_menu)->child;
 741
 742   if (child)
 743     {
 744       g_object_ref (child);
 745       gtk_cmoption_menu_remove_contents (option_menu);
 746       gtk_widget_destroy (child);
 747       g_object_unref (child);
 748
 749       gtk_cmoption_menu_select_first_sensitive (option_menu);
 750     }
 751 }
 752
 753 static void
 754 gtk_cmoption_menu_update_contents (GtkCMOptionMenu *option_menu)
 755 {
 756   GtkWidget *child;
 757   GtkRequisition child_requisition;
 758
 759   g_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 760
 761   if (option_menu->menu)
 762     {
 763       GtkWidget *old_item = option_menu->menu_item;
 764
 765       gtk_cmoption_menu_remove_contents (option_menu);
 766
 767       option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 768       if (option_menu->menu_item)
 769         {
 770           g_object_ref (option_menu->menu_item);
 771           child = GTK_BIN (option_menu->menu_item)->child;
 772           if (child)
 773             {
 774               if (!GTK_WIDGET_IS_SENSITIVE (option_menu->menu_item))
 775                 gtk_widget_set_sensitive (child, FALSE);
 776               gtk_widget_reparent (child, GTK_WIDGET (option_menu));
 777             }
 778
 779           g_signal_connect (option_menu->menu_item, "state_changed",
 780                             G_CALLBACK (gtk_cmoption_menu_item_state_changed_cb), option_menu);
 781           g_signal_connect (option_menu->menu_item, "destroy",
 782                             G_CALLBACK (gtk_cmoption_menu_item_destroy_cb), option_menu);
 783
 784           gtk_widget_size_request (child, &child_requisition);
 785           gtk_widget_size_allocate (GTK_WIDGET (option_menu),
 786                                     &(GTK_WIDGET (option_menu)->allocation));
 787
 788           if (GTK_WIDGET_DRAWABLE (option_menu))
 789             gtk_widget_queue_draw (GTK_WIDGET (option_menu));
 790         }
 791
 792       if (old_item != option_menu->menu_item)
 793         gtk_cmoption_menu_changed (option_menu);
 794     }
 795 }
 796
 797 static void
 798 gtk_cmoption_menu_remove_contents (GtkCMOptionMenu *option_menu)
 799 {
 800   GtkWidget *child;
 801
 802   g_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 803
 804   if (option_menu->menu_item)
 805     {
 806       child = GTK_BIN (option_menu)->child;
 807
 808       if (child)
 809         {
 810           gtk_widget_set_sensitive (child, TRUE);
 811           gtk_widget_set_state (child, GTK_STATE_NORMAL);
 812           gtk_widget_reparent (child, option_menu->menu_item);
 813         }
 814
 815       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 816                                             gtk_cmoption_menu_item_state_changed_cb,
 817                                             option_menu);
 818       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 819                                             gtk_cmoption_menu_item_destroy_cb,
 820                                             option_menu);
 821
 822       g_object_unref (option_menu->menu_item);
 823       option_menu->menu_item = NULL;
 824     }
 825 }
 826
 827 static void
 828 gtk_cmoption_menu_calc_size (GtkCMOptionMenu *option_menu)
 829 {
 830   GtkWidget *child;
 831   GList *children;
 832   GtkRequisition child_requisition;
 833   gint old_width = option_menu->width;
 834   gint old_height = option_menu->height;
 835
 836   g_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 837
 838   option_menu->width = 0;
 839   option_menu->height = 0;
 840
 841   if (option_menu->menu)
 842     {
 843       children = GTK_MENU_SHELL (option_menu->menu)->children;
 844       while (children)
 845         {
 846           child = children->data;
 847           children = children->next;
 848
 849           if (GTK_WIDGET_VISIBLE (child))
 850             {
 851               GtkWidget *inner = GTK_BIN (child)->child;
 852
 853               if (inner)
 854                 {
 855                   gtk_widget_size_request (inner, &child_requisition);
 856
 857                   option_menu->width = MAX (option_menu->width, child_requisition.width);
 858                   option_menu->height = MAX (option_menu->height, child_requisition.height);
 859                 }
 860             }
 861         }
 862     }
 863
 864   if (old_width != option_menu->width || old_height != option_menu->height)
 865     gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 866 }
 867
 868 static void
 869 gtk_cmoption_menu_position (GtkMenu  *menu,
 870                           gint     *x,
 871                           gint     *y,
 872                           gboolean *push_in,
 873                           gpointer  user_data)
 874 {
 875   GtkCMOptionMenu *option_menu;
 876   GtkWidget *active;
 877   GtkWidget *child;
 878   GtkWidget *widget;
 879   GtkRequisition requisition;
 880   GList *children;
 881   gint screen_width;
 882   gint menu_xpos;
 883   gint menu_ypos;
 884   gint menu_width;
 885
 886   g_return_if_fail (GTK_IS_CMOPTION_MENU (user_data));
 887
 888   option_menu = GTK_CMOPTION_MENU (user_data);
 889   widget = GTK_WIDGET (option_menu);
 890
 891   gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition);
 892   menu_width = requisition.width;
 893
 894   active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 895   gdk_window_get_origin (widget->window, &menu_xpos, &menu_ypos);
 896
 897   menu_xpos += widget->allocation.x;
 898   menu_ypos += widget->allocation.y + widget->allocation.height / 2 - 2;
 899
 900   if (active != NULL)
 901     {
 902       gtk_widget_get_child_requisition (active, &requisition);
 903       menu_ypos -= requisition.height / 2;
 904     }
 905
 906   children = GTK_MENU_SHELL (option_menu->menu)->children;
 907   while (children)
 908     {
 909       child = children->data;
 910
 911       if (active == child)
 912         break;
 913
 914       if (GTK_WIDGET_VISIBLE (child))
 915         {
 916           gtk_widget_get_child_requisition (child, &requisition);
 917           menu_ypos -= requisition.height;
 918         }
 919
 920       children = children->next;
 921     }
 922
 923   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 924     menu_xpos = menu_xpos + widget->allocation.width - menu_width;
 925
 926   /* Clamp the position on screen */
 927   screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
 928
 929   if (menu_xpos < 0)
 930     menu_xpos = 0;
 931   else if ((menu_xpos + menu_width) > screen_width)
 932     menu_xpos -= ((menu_xpos + menu_width) - screen_width);
 933
 934   *x = menu_xpos;
 935   *y = menu_ypos;
 936   *push_in = TRUE;
 937 }
 938
 939
 940 static void
 941 gtk_cmoption_menu_show_all (GtkWidget *widget)
 942 {
 943   GtkContainer *container;
 944   GtkCMOptionMenu *option_menu;
 945
 946   g_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 947   container = GTK_CONTAINER (widget);
 948   option_menu = GTK_CMOPTION_MENU (widget);
 949
 950   gtk_widget_show (widget);
 951   gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
 952   if (option_menu->menu)
 953     gtk_widget_show_all (option_menu->menu);
 954   if (option_menu->menu_item)
 955     gtk_widget_show_all (option_menu->menu_item);
 956 }
 957
 958
 959 static void
 960 gtk_cmoption_menu_hide_all (GtkWidget *widget)
 961 {
 962   GtkContainer *container;
 963
 964   g_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 965   container = GTK_CONTAINER (widget);
 966
 967   gtk_widget_hide (widget);
 968   gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
 969 }
 970
 971 static gboolean
 972 gtk_cmoption_menu_mnemonic_activate (GtkWidget *widget,
 973                                    gboolean   group_cycling)
 974 {
 975   gtk_widget_grab_focus (widget);
 976   return TRUE;
 977 }
 978
 979 static gint
 980 gtk_cmoption_menu_scroll_event (GtkWidget          *widget,
 981                               GdkEventScroll     *event)
 982 {
 983   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (widget);
 984   gint index;
 985   gint n_children;
 986   gint index_dir;
 987   GList *l;
 988   GtkMenuItem *item;
 989
 990   index = gtk_cmoption_menu_get_history (option_menu);
 991
 992   if (index != -1)
 993     {
 994       n_children = g_list_length (GTK_MENU_SHELL (option_menu->menu)->children);
 995
 996       if (event->direction == GDK_SCROLL_UP)
 997         index_dir = -1;
 998       else
 999         index_dir = 1;
1000
1001
1002       while (TRUE)
1003         {
1004           index += index_dir;
1005
1006           if (index < 0)
1007             break;
1008           if (index >= n_children)
1009             break;
1010
1011           l = g_list_nth (GTK_MENU_SHELL (option_menu->menu)->children, index);
1012           item = GTK_MENU_ITEM (l->data);
1013           if (GTK_WIDGET_VISIBLE (item) && GTK_WIDGET_IS_SENSITIVE (item))
1014             {
1015               gtk_cmoption_menu_set_history (option_menu, index);
1016               gtk_menu_item_activate (GTK_MENU_ITEM (item));
1017               break;
1018             }
1019
1020         }
1021     }
1022
1023   return TRUE;
1024 }
1025