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 #include "utils.h"
  35
  36 #define CHILD_LEFT_SPACING        4
  37 #define CHILD_RIGHT_SPACING       1
  38 #define CHILD_TOP_SPACING         1
  39 #define CHILD_BOTTOM_SPACING      1
  40
  41 typedef struct _GtkCMOptionMenuProps GtkCMOptionMenuProps;
  42
  43 struct _GtkCMOptionMenuProps
  44 {
  45   gboolean interior_focus;
  46   GtkRequisition indicator_size;
  47   GtkBorder indicator_spacing;
  48   gint focus_width;
  49   gint focus_pad;
  50 };
  51
  52 static const GtkCMOptionMenuProps default_props = {
  53   TRUE,
  54   { 7, 13 },
  55   { 7, 5, 2, 2 },               /* Left, right, top, bottom */
  56   1,
  57   0
  58 };
  59
  60 static void gtk_cmoption_menu_destroy         (GtkObject          *object);
  61 static void gtk_cmoption_menu_set_property    (GObject            *object,
  62                                              guint               prop_id,
  63                                              const GValue       *value,
  64                                              GParamSpec         *pspec);
  65 static void gtk_cmoption_menu_get_property    (GObject            *object,
  66                                              guint               prop_id,
  67                                              GValue             *value,
  68                                              GParamSpec         *pspec);
  69 static void gtk_cmoption_menu_size_request    (GtkWidget          *widget,
  70                                              GtkRequisition     *requisition);
  71 static void gtk_cmoption_menu_size_allocate   (GtkWidget          *widget,
  72                                              GtkAllocation      *allocation);
  73 static void gtk_cmoption_menu_paint           (GtkWidget          *widget,
  74                                              GdkRectangle       *area);
  75 static gint gtk_cmoption_menu_expose          (GtkWidget          *widget,
  76                                              GdkEventExpose     *event);
  77 static gint gtk_cmoption_menu_button_press    (GtkWidget          *widget,
  78                                              GdkEventButton     *event);
  79 static gint gtk_cmoption_menu_key_press     (GtkWidget          *widget,
  80                                              GdkEventKey        *event);
  81 static void gtk_cmoption_menu_selection_done  (GtkMenuShell       *menu_shell,
  82                                              GtkCMOptionMenu      *option_menu);
  83 static void gtk_cmoption_menu_update_contents (GtkCMOptionMenu      *option_menu);
  84 static void gtk_cmoption_menu_remove_contents (GtkCMOptionMenu      *option_menu);
  85 static void gtk_cmoption_menu_calc_size       (GtkCMOptionMenu      *option_menu);
  86 static void gtk_cmoption_menu_position        (GtkMenu            *menu,
  87                                              gint               *x,
  88                                              gint               *y,
  89                                              gint               *scroll_offet,
  90                                              gpointer            user_data);
  91 static void gtk_cmoption_menu_show_all        (GtkWidget          *widget);
  92 static void gtk_cmoption_menu_hide_all        (GtkWidget          *widget);
  93 static gboolean gtk_cmoption_menu_mnemonic_activate (GtkWidget    *widget,
  94                                                    gboolean      group_cycling);
  95 static GType gtk_cmoption_menu_child_type   (GtkContainer       *container);
  96 static gint gtk_cmoption_menu_scroll_event    (GtkWidget          *widget,
  97                                              GdkEventScroll     *event);
  98
  99 enum
 100 {
 101   CHANGED,
 102   LAST_SIGNAL
 103 };
 104
 105 enum
 106 {
 107   PROP_0,
 108   PROP_MENU,
 109   LAST_PROP
 110 };
 111
 112 static guint signals[LAST_SIGNAL] = { 0 };
 113
 114 G_DEFINE_TYPE (GtkCMOptionMenu, gtk_cmoption_menu, GTK_TYPE_BUTTON)
 115
 116 static void
 117 gtk_cmoption_menu_class_init (GtkCMOptionMenuClass *class)
 118 {
 119   GObjectClass *gobject_class;
 120   GtkObjectClass *object_class;
 121   GtkWidgetClass *widget_class;
 122   GtkContainerClass *container_class;
 123
 124   gobject_class = (GObjectClass*) class;
 125   object_class = (GtkObjectClass*) class;
 126   widget_class = (GtkWidgetClass*) class;
 127   container_class = (GtkContainerClass*) class;
 128
 129   signals[CHANGED] =
 130     g_signal_new (("changed"),
 131                   G_OBJECT_CLASS_TYPE (class),
 132                   G_SIGNAL_RUN_LAST,
 133                   G_STRUCT_OFFSET (GtkCMOptionMenuClass, changed),
 134                   NULL, NULL,
 135                   claws_marshal_VOID__VOID,
 136                   G_TYPE_NONE, 0);
 137
 138   gobject_class->set_property = gtk_cmoption_menu_set_property;
 139   gobject_class->get_property = gtk_cmoption_menu_get_property;
 140   object_class->destroy = gtk_cmoption_menu_destroy;
 141
 142   widget_class->size_request = gtk_cmoption_menu_size_request;
 143   widget_class->size_allocate = gtk_cmoption_menu_size_allocate;
 144   widget_class->expose_event = gtk_cmoption_menu_expose;
 145   widget_class->button_press_event = gtk_cmoption_menu_button_press;
 146   widget_class->key_press_event = gtk_cmoption_menu_key_press;
 147   widget_class->scroll_event = gtk_cmoption_menu_scroll_event;
 148   widget_class->show_all = gtk_cmoption_menu_show_all;
 149   widget_class->hide_all = gtk_cmoption_menu_hide_all;
 150   widget_class->mnemonic_activate = gtk_cmoption_menu_mnemonic_activate;
 151
 152   container_class->child_type = gtk_cmoption_menu_child_type;
 153
 154   g_object_class_install_property (gobject_class,
 155                                    PROP_MENU,
 156                                    g_param_spec_object ("menu",
 157                                                         ("Menu"),
 158                                                         ("The menu of options"),
 159                                                         GTK_TYPE_MENU,
 160                                                         G_PARAM_READWRITE));
 161
 162   gtk_widget_class_install_style_property (widget_class,
 163                                            g_param_spec_boxed ("indicator-size",
 164                                                                ("Indicator Size"),
 165                                                                ("Size of dropdown indicator"),
 166                                                                GTK_TYPE_REQUISITION,
 167                                                                G_PARAM_READABLE));
 168   gtk_widget_class_install_style_property (widget_class,
 169                                            g_param_spec_boxed ("indicator-spacing",
 170                                                                ("Indicator Spacing"),
 171                                                                ("Spacing around indicator"),
 172                                                                GTK_TYPE_BORDER,
 173                                                                G_PARAM_READABLE));
 174 }
 175
 176 static GType
 177 gtk_cmoption_menu_child_type (GtkContainer       *container)
 178 {
 179   return G_TYPE_NONE;
 180 }
 181
 182 static void
 183 gtk_cmoption_menu_init (GtkCMOptionMenu *option_menu)
 184 {
 185   GTK_WIDGET_SET_FLAGS (option_menu, GTK_CAN_FOCUS);
 186   GTK_WIDGET_UNSET_FLAGS (option_menu, GTK_CAN_DEFAULT | GTK_RECEIVES_DEFAULT);
 187
 188   option_menu->menu = NULL;
 189   option_menu->menu_item = NULL;
 190   option_menu->width = 0;
 191   option_menu->height = 0;
 192 }
 193
 194 GtkWidget*
 195 gtk_cmoption_menu_new (void)
 196 {
 197   return g_object_new (GTK_TYPE_CMOPTION_MENU, NULL);
 198 }
 199
 200 GtkWidget*
 201 gtk_cmoption_menu_get_menu (GtkCMOptionMenu *option_menu)
 202 {
 203   cm_return_val_if_fail (GTK_IS_CMOPTION_MENU (option_menu), NULL);
 204
 205   return option_menu->menu;
 206 }
 207
 208 static void
 209 gtk_cmoption_menu_detacher (GtkWidget     *widget,
 210                           GtkMenu       *menu)
 211 {
 212   GtkCMOptionMenu *option_menu;
 213
 214   cm_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 215
 216   option_menu = GTK_CMOPTION_MENU (widget);
 217   cm_return_if_fail (option_menu->menu == (GtkWidget*) menu);
 218
 219   gtk_cmoption_menu_remove_contents (option_menu);
 220   g_signal_handlers_disconnect_by_func (option_menu->menu,
 221                                         gtk_cmoption_menu_selection_done,
 222                                         option_menu);
 223   g_signal_handlers_disconnect_by_func (option_menu->menu,
 224                                         gtk_cmoption_menu_calc_size,
 225                                         option_menu);
 226
 227   option_menu->menu = NULL;
 228   g_object_notify (G_OBJECT (option_menu), "menu");
 229 }
 230
 231 void
 232 gtk_cmoption_menu_set_menu (GtkCMOptionMenu *option_menu,
 233                           GtkWidget     *menu)
 234 {
 235   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 236   cm_return_if_fail (GTK_IS_MENU (menu));
 237
 238   if (option_menu->menu != menu)
 239     {
 240       gtk_cmoption_menu_remove_menu (option_menu);
 241
 242       option_menu->menu = menu;
 243       gtk_menu_attach_to_widget (GTK_MENU (menu),
 244                                  GTK_WIDGET (option_menu),
 245                                  gtk_cmoption_menu_detacher);
 246
 247       gtk_cmoption_menu_calc_size (option_menu);
 248
 249       g_signal_connect_after (option_menu->menu, "selection-done",
 250                               G_CALLBACK (gtk_cmoption_menu_selection_done),
 251                               option_menu);
 252       g_signal_connect_swapped (option_menu->menu, "size_request",
 253                                 G_CALLBACK (gtk_cmoption_menu_calc_size),
 254                                 option_menu);
 255
 256       if (GTK_WIDGET (option_menu)->parent)
 257         gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 258
 259       gtk_cmoption_menu_update_contents (option_menu);
 260
 261       g_object_notify (G_OBJECT (option_menu), "menu");
 262     }
 263 }
 264
 265 void
 266 gtk_cmoption_menu_remove_menu (GtkCMOptionMenu *option_menu)
 267 {
 268   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 269
 270   if (option_menu->menu)
 271     {
 272       if (GTK_MENU_SHELL (option_menu->menu)->active)
 273         gtk_menu_shell_cancel (GTK_MENU_SHELL (option_menu->menu));
 274
 275       gtk_menu_detach (GTK_MENU (option_menu->menu));
 276     }
 277 }
 278
 279 void
 280 gtk_cmoption_menu_set_history (GtkCMOptionMenu *option_menu,
 281                              guint          index)
 282 {
 283   GtkWidget *menu_item;
 284
 285   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 286
 287   if (option_menu->menu)
 288     {
 289       gtk_menu_set_active (GTK_MENU (option_menu->menu), index);
 290       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 291
 292       if (menu_item != option_menu->menu_item)
 293         gtk_cmoption_menu_update_contents (option_menu);
 294     }
 295 }
 296
 297 /**
 298  * gtk_cmoption_menu_get_history:
 299  * @option_menu: a #GtkCMOptionMenu
 300  *
 301  * Retrieves the index of the currently selected menu item. The menu
 302  * items are numbered from top to bottom, starting with 0.
 303  *
 304  * Return value: index of the selected menu item, or -1 if there are no menu items
 305  * Deprecated: 2.4: Use #GtkComboBox instead.
 306  **/
 307 gint
 308 gtk_cmoption_menu_get_history (GtkCMOptionMenu *option_menu)
 309 {
 310   GtkWidget *active_widget;
 311
 312   cm_return_val_if_fail (GTK_IS_CMOPTION_MENU (option_menu), -1);
 313
 314   if (option_menu->menu)
 315     {
 316       active_widget = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 317
 318       if (active_widget)
 319         return g_list_index (GTK_MENU_SHELL (option_menu->menu)->children,
 320                              active_widget);
 321       else
 322         return -1;
 323     }
 324   else
 325     return -1;
 326 }
 327
 328 static void
 329 gtk_cmoption_menu_set_property (GObject            *object,
 330                               guint               prop_id,
 331                               const GValue       *value,
 332                               GParamSpec         *pspec)
 333 {
 334   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (object);
 335
 336   switch (prop_id)
 337     {
 338     case PROP_MENU:
 339       gtk_cmoption_menu_set_menu (option_menu, g_value_get_object (value));
 340       break;
 341
 342     default:
 343       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 344       break;
 345     }
 346 }
 347
 348 static void
 349 gtk_cmoption_menu_get_property (GObject            *object,
 350                               guint               prop_id,
 351                               GValue             *value,
 352                               GParamSpec         *pspec)
 353 {
 354   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (object);
 355
 356   switch (prop_id)
 357     {
 358     case PROP_MENU:
 359       g_value_set_object (value, option_menu->menu);
 360       break;
 361
 362     default:
 363       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 364       break;
 365     }
 366 }
 367
 368 static void
 369 gtk_cmoption_menu_destroy (GtkObject *object)
 370 {
 371   GtkCMOptionMenu *option_menu;
 372
 373   cm_return_if_fail (GTK_IS_CMOPTION_MENU (object));
 374
 375   option_menu = GTK_CMOPTION_MENU (object);
 376
 377   if (option_menu->menu)
 378     gtk_widget_destroy (option_menu->menu);
 379
 380   if (GTK_OBJECT_CLASS (gtk_cmoption_menu_parent_class)->destroy)
 381     (* GTK_OBJECT_CLASS (gtk_cmoption_menu_parent_class)->destroy) (object);
 382 }
 383
 384 static void
 385 gtk_cmoption_menu_get_props (GtkCMOptionMenu       *option_menu,
 386                            GtkCMOptionMenuProps  *props)
 387 {
 388   GtkRequisition *indicator_size;
 389   GtkBorder *indicator_spacing;
 390
 391   gtk_widget_style_get (GTK_WIDGET (option_menu),
 392                         "indicator-size", &indicator_size,
 393                         "indicator-spacing", &indicator_spacing,
 394                         "interior-focus", &props->interior_focus,
 395                         "focus-line-width", &props->focus_width,
 396                         "focus-padding", &props->focus_pad,
 397                         NULL);
 398
 399   if (indicator_size)
 400     props->indicator_size = *indicator_size;
 401   else
 402     props->indicator_size = default_props.indicator_size;
 403
 404   if (indicator_spacing)
 405     props->indicator_spacing = *indicator_spacing;
 406   else
 407     props->indicator_spacing = default_props.indicator_spacing;
 408
 409   gtk_requisition_free (indicator_size);
 410   gtk_border_free (indicator_spacing);
 411 }
 412
 413 static void
 414 gtk_cmoption_menu_size_request (GtkWidget      *widget,
 415                               GtkRequisition *requisition)
 416 {
 417   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (widget);
 418   GtkCMOptionMenuProps props;
 419   gint tmp;
 420   GtkRequisition child_requisition = { 0, 0 };
 421
 422   gtk_cmoption_menu_get_props (option_menu, &props);
 423
 424   if (GTK_BIN (option_menu)->child && GTK_WIDGET_VISIBLE (GTK_BIN (option_menu)->child))
 425     {
 426       gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);
 427
 428       requisition->width += child_requisition.width;
 429       requisition->height += child_requisition.height;
 430     }
 431
 432   requisition->width = ((GTK_CONTAINER (widget)->border_width +
 433                          GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +
 434                         MAX (child_requisition.width, option_menu->width) +
 435                         props.indicator_size.width +
 436                         props.indicator_spacing.left + props.indicator_spacing.right +
 437                         CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);
 438   requisition->height = ((GTK_CONTAINER (widget)->border_width +
 439                           GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +
 440                          MAX (child_requisition.height, option_menu->height) +
 441                          CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);
 442
 443   tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +
 444          props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);
 445   requisition->height = MAX (requisition->height, tmp);
 446 }
 447
 448 static void
 449 gtk_cmoption_menu_size_allocate (GtkWidget     *widget,
 450                                GtkAllocation *allocation)
 451 {
 452   GtkWidget *child;
 453   GtkButton *button = GTK_BUTTON (widget);
 454   GtkAllocation child_allocation;
 455   GtkCMOptionMenuProps props;
 456   gint border_width;
 457
 458   gtk_cmoption_menu_get_props (GTK_CMOPTION_MENU (widget), &props);
 459   border_width = GTK_CONTAINER (widget)->border_width;
 460
 461   widget->allocation = *allocation;
 462   if (GTK_WIDGET_REALIZED (widget))
 463     gdk_window_move_resize (button->event_window,
 464                             allocation->x + border_width, allocation->y + border_width,
 465                             allocation->width - border_width * 2, allocation->height - border_width * 2);
 466
 467   child = GTK_BIN (widget)->child;
 468   if (child && GTK_WIDGET_VISIBLE (child))
 469     {
 470       gint xthickness = GTK_WIDGET (widget)->style->xthickness;
 471       gint ythickness = GTK_WIDGET (widget)->style->ythickness;
 472
 473       child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;
 474       child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;
 475       child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -
 476                                     props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -
 477                                     CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);
 478       child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -
 479                                      CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);
 480
 481       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 482         child_allocation.x += props.indicator_size.width + props.indicator_spacing.left + props.indicator_spacing.right;
 483
 484       gtk_widget_size_allocate (child, &child_allocation);
 485     }
 486 }
 487
 488 static void
 489 gtk_cmoption_menu_paint (GtkWidget    *widget,
 490                        GdkRectangle *area)
 491 {
 492   GdkRectangle button_area;
 493   GtkCMOptionMenuProps props;
 494   gint border_width;
 495   gint tab_x;
 496
 497   cm_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 498   cm_return_if_fail (area != NULL);
 499
 500   if (GTK_WIDGET_DRAWABLE (widget))
 501     {
 502       border_width = GTK_CONTAINER (widget)->border_width;
 503       gtk_cmoption_menu_get_props (GTK_CMOPTION_MENU (widget), &props);
 504
 505       button_area.x = widget->allocation.x + border_width;
 506       button_area.y = widget->allocation.y + border_width;
 507       button_area.width = widget->allocation.width - 2 * border_width;
 508       button_area.height = widget->allocation.height - 2 * border_width;
 509
 510       if (!props.interior_focus && GTK_WIDGET_HAS_FOCUS (widget))
 511         {
 512           button_area.x += props.focus_width + props.focus_pad;
 513           button_area.y += props.focus_width + props.focus_pad;
 514           button_area.width -= 2 * (props.focus_width + props.focus_pad);
 515           button_area.height -= 2 * (props.focus_width + props.focus_pad);
 516         }
 517
 518       gtk_paint_box (widget->style, widget->window,
 519                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 520                      area, widget, "optionmenu",
 521                      button_area.x, button_area.y,
 522                      button_area.width, button_area.height);
 523
 524       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 525         tab_x = button_area.x + props.indicator_spacing.right +
 526           widget->style->xthickness;
 527       else
 528         tab_x = button_area.x + button_area.width -
 529           props.indicator_size.width - props.indicator_spacing.right -
 530           widget->style->xthickness;
 531
 532       gtk_paint_tab (widget->style, widget->window,
 533                      GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
 534                      area, widget, "optionmenutab",
 535                      tab_x,
 536                      button_area.y + (button_area.height - props.indicator_size.height) / 2,
 537                      props.indicator_size.width, props.indicator_size.height);
 538
 539       if (GTK_WIDGET_HAS_FOCUS (widget))
 540         {
 541           if (props.interior_focus)
 542             {
 543               button_area.x += widget->style->xthickness + props.focus_pad;
 544               button_area.y += widget->style->ythickness + props.focus_pad;
 545               button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +
 546                       props.indicator_spacing.left +
 547                       props.indicator_spacing.right +
 548                       props.indicator_size.width;
 549               button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);
 550               if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 551                 button_area.x += props.indicator_spacing.left +
 552                   props.indicator_spacing.right +
 553                   props.indicator_size.width;
 554             }
 555           else
 556             {
 557               button_area.x -= props.focus_width + props.focus_pad;
 558               button_area.y -= props.focus_width + props.focus_pad;
 559               button_area.width += 2 * (props.focus_width + props.focus_pad);
 560               button_area.height += 2 * (props.focus_width + props.focus_pad);
 561             }
 562
 563           gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 564                            area, widget, "button",
 565                            button_area.x,
 566                            button_area.y,
 567                            button_area.width,
 568                            button_area.height);
 569         }
 570     }
 571 }
 572
 573 static gint
 574 gtk_cmoption_menu_expose (GtkWidget      *widget,
 575                         GdkEventExpose *event)
 576 {
 577   cm_return_val_if_fail (GTK_IS_CMOPTION_MENU (widget), FALSE);
 578   cm_return_val_if_fail (event != NULL, FALSE);
 579
 580   if (GTK_WIDGET_DRAWABLE (widget))
 581     {
 582       gtk_cmoption_menu_paint (widget, &event->area);
 583
 584
 585       /* The following code tries to draw the child in two places at
 586        * once. It fails miserably for several reasons
 587        *
 588        * - If the child is not no-window, removing generates
 589        *   more expose events. Bad, bad, bad.
 590        *
 591        * - Even if the child is no-window, removing it now (properly)
 592        *   clears the space where it was, so it does no good
 593        */
 594
 595 #if 0
 596       remove_child = FALSE;
 597       child = GTK_BUTTON (widget)->child;
 598
 599       if (!child)
 600         {
 601           if (!GTK_CMOPTION_MENU (widget)->menu)
 602             return FALSE;
 603           gtk_cmoption_menu_update_contents (GTK_CMOPTION_MENU (widget));
 604           child = GTK_BUTTON (widget)->child;
 605           if (!child)
 606             return FALSE;
 607           remove_child = TRUE;
 608         }
 609
 610       child_event = *event;
 611
 612       if (GTK_WIDGET_NO_WINDOW (child) &&
 613           gtk_widget_intersect (child, &event->area, &child_event.area))
 614         gtk_widget_event (child, (GdkEvent*) &child_event);
 615
 616       if (remove_child)
 617         gtk_cmoption_menu_remove_contents (GTK_CMOPTION_MENU (widget));
 618 #else
 619       if (GTK_BIN (widget)->child)
 620         gtk_container_propagate_expose (GTK_CONTAINER (widget),
 621                                         GTK_BIN (widget)->child,
 622                                         event);
 623 #endif /* 0 */
 624     }
 625
 626   return FALSE;
 627 }
 628
 629 static gint
 630 gtk_cmoption_menu_button_press (GtkWidget      *widget,
 631                               GdkEventButton *event)
 632 {
 633   GtkCMOptionMenu *option_menu;
 634   GtkWidget *menu_item;
 635
 636   cm_return_val_if_fail (GTK_IS_CMOPTION_MENU (widget), FALSE);
 637   cm_return_val_if_fail (event != NULL, FALSE);
 638
 639   option_menu = GTK_CMOPTION_MENU (widget);
 640
 641   if ((event->type == GDK_BUTTON_PRESS) &&
 642       (event->button == 1))
 643     {
 644       gtk_cmoption_menu_remove_contents (option_menu);
 645       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 646                       gtk_cmoption_menu_position, option_menu,
 647                       event->button, event->time);
 648       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 649       if (menu_item)
 650         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 651       return TRUE;
 652     }
 653
 654   return FALSE;
 655 }
 656
 657 static gint
 658 gtk_cmoption_menu_key_press (GtkWidget   *widget,
 659                            GdkEventKey *event)
 660 {
 661   GtkCMOptionMenu *option_menu;
 662   GtkWidget *menu_item;
 663
 664   cm_return_val_if_fail (GTK_IS_CMOPTION_MENU (widget), FALSE);
 665   cm_return_val_if_fail (event != NULL, FALSE);
 666
 667   option_menu = GTK_CMOPTION_MENU (widget);
 668
 669   switch (event->keyval)
 670     {
 671     case GDK_KP_Space:
 672     case GDK_space:
 673       gtk_cmoption_menu_remove_contents (option_menu);
 674       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 675                       gtk_cmoption_menu_position, option_menu,
 676                       0, event->time);
 677       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 678       if (menu_item)
 679         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 680       return TRUE;
 681     }
 682
 683   return FALSE;
 684 }
 685
 686 static void
 687 gtk_cmoption_menu_selection_done (GtkMenuShell  *menu_shell,
 688                                 GtkCMOptionMenu *option_menu)
 689 {
 690   cm_return_if_fail (menu_shell != NULL);
 691   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 692
 693   gtk_cmoption_menu_update_contents (option_menu);
 694 }
 695
 696 static void
 697 gtk_cmoption_menu_changed (GtkCMOptionMenu *option_menu)
 698 {
 699   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 700
 701   g_signal_emit (option_menu, signals[CHANGED], 0);
 702 }
 703
 704 static void
 705 gtk_cmoption_menu_select_first_sensitive (GtkCMOptionMenu *option_menu)
 706 {
 707   if (option_menu->menu)
 708     {
 709       GList *children = GTK_MENU_SHELL (option_menu->menu)->children;
 710       gint index = 0;
 711
 712       while (children)
 713         {
 714           if (GTK_WIDGET_SENSITIVE (children->data))
 715             {
 716               gtk_cmoption_menu_set_history (option_menu, index);
 717               return;
 718             }
 719
 720           children = children->next;
 721           index++;
 722         }
 723     }
 724 }
 725
 726 static void
 727 gtk_cmoption_menu_item_state_changed_cb (GtkWidget      *widget,
 728                                        GtkStateType    previous_state,
 729                                        GtkCMOptionMenu  *option_menu)
 730 {
 731   GtkWidget *child = GTK_BIN (option_menu)->child;
 732
 733   if (child && GTK_WIDGET_SENSITIVE (child) != GTK_WIDGET_IS_SENSITIVE (widget))
 734     gtk_widget_set_sensitive (child, GTK_WIDGET_IS_SENSITIVE (widget));
 735 }
 736
 737 static void
 738 gtk_cmoption_menu_item_destroy_cb (GtkWidget     *widget,
 739                                  GtkCMOptionMenu *option_menu)
 740 {
 741   GtkWidget *child = GTK_BIN (option_menu)->child;
 742
 743   if (child)
 744     {
 745       g_object_ref (child);
 746       gtk_cmoption_menu_remove_contents (option_menu);
 747       gtk_widget_destroy (child);
 748       g_object_unref (child);
 749
 750       gtk_cmoption_menu_select_first_sensitive (option_menu);
 751     }
 752 }
 753
 754 static void
 755 gtk_cmoption_menu_update_contents (GtkCMOptionMenu *option_menu)
 756 {
 757   GtkWidget *child;
 758   GtkRequisition child_requisition;
 759
 760   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 761
 762   if (option_menu->menu)
 763     {
 764       GtkWidget *old_item = option_menu->menu_item;
 765
 766       gtk_cmoption_menu_remove_contents (option_menu);
 767
 768       option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 769       if (option_menu->menu_item)
 770         {
 771           g_object_ref (option_menu->menu_item);
 772           child = GTK_BIN (option_menu->menu_item)->child;
 773           if (child)
 774             {
 775               if (!GTK_WIDGET_IS_SENSITIVE (option_menu->menu_item))
 776                 gtk_widget_set_sensitive (child, FALSE);
 777               gtk_widget_reparent (child, GTK_WIDGET (option_menu));
 778             }
 779
 780           g_signal_connect (option_menu->menu_item, "state_changed",
 781                             G_CALLBACK (gtk_cmoption_menu_item_state_changed_cb), option_menu);
 782           g_signal_connect (option_menu->menu_item, "destroy",
 783                             G_CALLBACK (gtk_cmoption_menu_item_destroy_cb), option_menu);
 784
 785           gtk_widget_size_request (child, &child_requisition);
 786           gtk_widget_size_allocate (GTK_WIDGET (option_menu),
 787                                     &(GTK_WIDGET (option_menu)->allocation));
 788
 789           if (GTK_WIDGET_DRAWABLE (option_menu))
 790             gtk_widget_queue_draw (GTK_WIDGET (option_menu));
 791         }
 792
 793       if (old_item != option_menu->menu_item)
 794         gtk_cmoption_menu_changed (option_menu);
 795     }
 796 }
 797
 798 static void
 799 gtk_cmoption_menu_remove_contents (GtkCMOptionMenu *option_menu)
 800 {
 801   GtkWidget *child;
 802
 803   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 804
 805   if (option_menu->menu_item)
 806     {
 807       child = GTK_BIN (option_menu)->child;
 808
 809       if (child)
 810         {
 811           gtk_widget_set_sensitive (child, TRUE);
 812           gtk_widget_set_state (child, GTK_STATE_NORMAL);
 813           gtk_widget_reparent (child, option_menu->menu_item);
 814         }
 815
 816       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 817                                             gtk_cmoption_menu_item_state_changed_cb,
 818                                             option_menu);
 819       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 820                                             gtk_cmoption_menu_item_destroy_cb,
 821                                             option_menu);
 822
 823       g_object_unref (option_menu->menu_item);
 824       option_menu->menu_item = NULL;
 825     }
 826 }
 827
 828 static void
 829 gtk_cmoption_menu_calc_size (GtkCMOptionMenu *option_menu)
 830 {
 831   GtkWidget *child;
 832   GList *children;
 833   GtkRequisition child_requisition;
 834   gint old_width = option_menu->width;
 835   gint old_height = option_menu->height;
 836
 837   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 838
 839   option_menu->width = 0;
 840   option_menu->height = 0;
 841
 842   if (option_menu->menu)
 843     {
 844       children = GTK_MENU_SHELL (option_menu->menu)->children;
 845       while (children)
 846         {
 847           child = children->data;
 848           children = children->next;
 849
 850           if (GTK_WIDGET_VISIBLE (child))
 851             {
 852               GtkWidget *inner = GTK_BIN (child)->child;
 853
 854               if (inner)
 855                 {
 856                   gtk_widget_size_request (inner, &child_requisition);
 857
 858                   option_menu->width = MAX (option_menu->width, child_requisition.width);
 859                   option_menu->height = MAX (option_menu->height, child_requisition.height);
 860                 }
 861             }
 862         }
 863     }
 864
 865   if (old_width != option_menu->width || old_height != option_menu->height)
 866     gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 867 }
 868
 869 static void
 870 gtk_cmoption_menu_position (GtkMenu  *menu,
 871                           gint     *x,
 872                           gint     *y,
 873                           gboolean *push_in,
 874                           gpointer  user_data)
 875 {
 876   GtkCMOptionMenu *option_menu;
 877   GtkWidget *active;
 878   GtkWidget *child;
 879   GtkWidget *widget;
 880   GtkRequisition requisition;
 881   GList *children;
 882   gint screen_width;
 883   gint menu_xpos;
 884   gint menu_ypos;
 885   gint menu_width;
 886
 887   cm_return_if_fail (GTK_IS_CMOPTION_MENU (user_data));
 888
 889   option_menu = GTK_CMOPTION_MENU (user_data);
 890   widget = GTK_WIDGET (option_menu);
 891
 892   gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition);
 893   menu_width = requisition.width;
 894
 895   active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 896   gdk_window_get_origin (widget->window, &menu_xpos, &menu_ypos);
 897
 898   menu_xpos += widget->allocation.x;
 899   menu_ypos += widget->allocation.y + widget->allocation.height / 2 - 2;
 900
 901   if (active != NULL)
 902     {
 903       gtk_widget_get_child_requisition (active, &requisition);
 904       menu_ypos -= requisition.height / 2;
 905     }
 906
 907   children = GTK_MENU_SHELL (option_menu->menu)->children;
 908   while (children)
 909     {
 910       child = children->data;
 911
 912       if (active == child)
 913         break;
 914
 915       if (GTK_WIDGET_VISIBLE (child))
 916         {
 917           gtk_widget_get_child_requisition (child, &requisition);
 918           menu_ypos -= requisition.height;
 919         }
 920
 921       children = children->next;
 922     }
 923
 924   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 925     menu_xpos = menu_xpos + widget->allocation.width - menu_width;
 926
 927   /* Clamp the position on screen */
 928   screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
 929
 930   if (menu_xpos < 0)
 931     menu_xpos = 0;
 932   else if ((menu_xpos + menu_width) > screen_width)
 933     menu_xpos -= ((menu_xpos + menu_width) - screen_width);
 934
 935   *x = menu_xpos;
 936   *y = menu_ypos;
 937   *push_in = TRUE;
 938 }
 939
 940
 941 static void
 942 gtk_cmoption_menu_show_all (GtkWidget *widget)
 943 {
 944   GtkContainer *container;
 945   GtkCMOptionMenu *option_menu;
 946
 947   cm_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 948   container = GTK_CONTAINER (widget);
 949   option_menu = GTK_CMOPTION_MENU (widget);
 950
 951   gtk_widget_show (widget);
 952   gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
 953   if (option_menu->menu)
 954     gtk_widget_show_all (option_menu->menu);
 955   if (option_menu->menu_item)
 956     gtk_widget_show_all (option_menu->menu_item);
 957 }
 958
 959
 960 static void
 961 gtk_cmoption_menu_hide_all (GtkWidget *widget)
 962 {
 963   GtkContainer *container;
 964
 965   cm_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 966   container = GTK_CONTAINER (widget);
 967
 968   gtk_widget_hide (widget);
 969   gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
 970 }
 971
 972 static gboolean
 973 gtk_cmoption_menu_mnemonic_activate (GtkWidget *widget,
 974                                    gboolean   group_cycling)
 975 {
 976   gtk_widget_grab_focus (widget);
 977   return TRUE;
 978 }
 979
 980 static gint
 981 gtk_cmoption_menu_scroll_event (GtkWidget          *widget,
 982                               GdkEventScroll     *event)
 983 {
 984   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (widget);
 985   gint index;
 986   gint n_children;
 987   gint index_dir;
 988   GList *l;
 989   GtkMenuItem *item;
 990
 991   index = gtk_cmoption_menu_get_history (option_menu);
 992
 993   if (index != -1)
 994     {
 995       n_children = g_list_length (GTK_MENU_SHELL (option_menu->menu)->children);
 996
 997       if (event->direction == GDK_SCROLL_UP)
 998         index_dir = -1;
 999       else
1000         index_dir = 1;
1001
1002
1003       while (TRUE)
1004         {
1005           index += index_dir;
1006
1007           if (index < 0)
1008             break;
1009           if (index >= n_children)
1010             break;
1011
1012           l = g_list_nth (GTK_MENU_SHELL (option_menu->menu)->children, index);
1013           item = GTK_MENU_ITEM (l->data);
1014           if (GTK_WIDGET_VISIBLE (item) && GTK_WIDGET_IS_SENSITIVE (item))
1015             {
1016               gtk_cmoption_menu_set_history (option_menu, index);
1017               gtk_menu_item_activate (GTK_MENU_ITEM (item));
1018               break;
1019             }
1020
1021         }
1022     }
1023
1024   return TRUE;
1025 }
1026