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 #include "gtkutils.h"
  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 _GtkCMOptionMenuProps GtkCMOptionMenuProps;
  43
  44 struct _GtkCMOptionMenuProps
  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 GtkCMOptionMenuProps 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_cmoption_menu_destroy         (GtkObject          *object);
  62 static void gtk_cmoption_menu_set_property    (GObject            *object,
  63                                              guint               prop_id,
  64                                              const GValue       *value,
  65                                              GParamSpec         *pspec);
  66 static void gtk_cmoption_menu_get_property    (GObject            *object,
  67                                              guint               prop_id,
  68                                              GValue             *value,
  69                                              GParamSpec         *pspec);
  70 static void gtk_cmoption_menu_size_request    (GtkWidget          *widget,
  71                                              GtkRequisition     *requisition);
  72 static void gtk_cmoption_menu_size_allocate   (GtkWidget          *widget,
  73                                              GtkAllocation      *allocation);
  74 static void gtk_cmoption_menu_paint           (GtkWidget          *widget,
  75                                              GdkRectangle       *area);
  76 static gint gtk_cmoption_menu_expose          (GtkWidget          *widget,
  77                                              GdkEventExpose     *event);
  78 static gint gtk_cmoption_menu_button_press    (GtkWidget          *widget,
  79                                              GdkEventButton     *event);
  80 static gint gtk_cmoption_menu_key_press     (GtkWidget          *widget,
  81                                              GdkEventKey        *event);
  82 static void gtk_cmoption_menu_selection_done  (GtkMenuShell       *menu_shell,
  83                                              GtkCMOptionMenu      *option_menu);
  84 static void gtk_cmoption_menu_update_contents (GtkCMOptionMenu      *option_menu);
  85 static void gtk_cmoption_menu_remove_contents (GtkCMOptionMenu      *option_menu);
  86 static void gtk_cmoption_menu_calc_size       (GtkCMOptionMenu      *option_menu);
  87 static void gtk_cmoption_menu_position        (GtkMenu            *menu,
  88                                              gint               *x,
  89                                              gint               *y,
  90                                              gint               *scroll_offet,
  91                                              gpointer            user_data);
  92 static void gtk_cmoption_menu_show_all        (GtkWidget          *widget);
  93 static void gtk_cmoption_menu_hide_all        (GtkWidget          *widget);
  94 static gboolean gtk_cmoption_menu_mnemonic_activate (GtkWidget    *widget,
  95                                                    gboolean      group_cycling);
  96 static GType gtk_cmoption_menu_child_type   (GtkContainer       *container);
  97 static gint gtk_cmoption_menu_scroll_event    (GtkWidget          *widget,
  98                                              GdkEventScroll     *event);
  99
 100 enum
 101 {
 102   CHANGED,
 103   LAST_SIGNAL
 104 };
 105
 106 enum
 107 {
 108   PROP_0,
 109   PROP_MENU,
 110   LAST_PROP
 111 };
 112
 113 static guint signals[LAST_SIGNAL] = { 0 };
 114
 115 G_DEFINE_TYPE (GtkCMOptionMenu, gtk_cmoption_menu, GTK_TYPE_BUTTON)
 116
 117 static void
 118 gtk_cmoption_menu_class_init (GtkCMOptionMenuClass *class)
 119 {
 120   GObjectClass *gobject_class;
 121   GtkObjectClass *object_class;
 122   GtkWidgetClass *widget_class;
 123   GtkContainerClass *container_class;
 124
 125   gobject_class = (GObjectClass*) class;
 126   object_class = (GtkObjectClass*) class;
 127   widget_class = (GtkWidgetClass*) class;
 128   container_class = (GtkContainerClass*) class;
 129
 130   signals[CHANGED] =
 131     g_signal_new (("changed"),
 132                   G_OBJECT_CLASS_TYPE (class),
 133                   G_SIGNAL_RUN_LAST,
 134                   G_STRUCT_OFFSET (GtkCMOptionMenuClass, changed),
 135                   NULL, NULL,
 136                   claws_marshal_VOID__VOID,
 137                   G_TYPE_NONE, 0);
 138
 139   gobject_class->set_property = gtk_cmoption_menu_set_property;
 140   gobject_class->get_property = gtk_cmoption_menu_get_property;
 141   object_class->destroy = gtk_cmoption_menu_destroy;
 142
 143   widget_class->size_request = gtk_cmoption_menu_size_request;
 144   widget_class->size_allocate = gtk_cmoption_menu_size_allocate;
 145   widget_class->expose_event = gtk_cmoption_menu_expose;
 146   widget_class->button_press_event = gtk_cmoption_menu_button_press;
 147   widget_class->key_press_event = gtk_cmoption_menu_key_press;
 148   widget_class->scroll_event = gtk_cmoption_menu_scroll_event;
 149   widget_class->show_all = gtk_cmoption_menu_show_all;
 150   widget_class->hide_all = gtk_cmoption_menu_hide_all;
 151   widget_class->mnemonic_activate = gtk_cmoption_menu_mnemonic_activate;
 152
 153   container_class->child_type = gtk_cmoption_menu_child_type;
 154
 155   g_object_class_install_property (gobject_class,
 156                                    PROP_MENU,
 157                                    g_param_spec_object ("menu",
 158                                                         ("Menu"),
 159                                                         ("The menu of options"),
 160                                                         GTK_TYPE_MENU,
 161                                                         G_PARAM_READWRITE));
 162
 163   gtk_widget_class_install_style_property (widget_class,
 164                                            g_param_spec_boxed ("indicator-size",
 165                                                                ("Indicator Size"),
 166                                                                ("Size of dropdown indicator"),
 167                                                                GTK_TYPE_REQUISITION,
 168                                                                G_PARAM_READABLE));
 169   gtk_widget_class_install_style_property (widget_class,
 170                                            g_param_spec_boxed ("indicator-spacing",
 171                                                                ("Indicator Spacing"),
 172                                                                ("Spacing around indicator"),
 173                                                                GTK_TYPE_BORDER,
 174                                                                G_PARAM_READABLE));
 175 }
 176
 177 static GType
 178 gtk_cmoption_menu_child_type (GtkContainer       *container)
 179 {
 180   return G_TYPE_NONE;
 181 }
 182
 183 static void
 184 gtk_cmoption_menu_init (GtkCMOptionMenu *option_menu)
 185 {
 186   gtkut_widget_set_can_focus (GTK_WIDGET(option_menu), TRUE);
 187   gtkut_widget_set_can_default (GTK_WIDGET(option_menu), FALSE);
 188   gtkut_widget_set_receives_default (GTK_WIDGET(option_menu), FALSE);
 189
 190   option_menu->menu = NULL;
 191   option_menu->menu_item = NULL;
 192   option_menu->width = 0;
 193   option_menu->height = 0;
 194 }
 195
 196 GtkWidget*
 197 gtk_cmoption_menu_new (void)
 198 {
 199   return g_object_new (GTK_TYPE_CMOPTION_MENU, NULL);
 200 }
 201
 202 GtkWidget*
 203 gtk_cmoption_menu_get_menu (GtkCMOptionMenu *option_menu)
 204 {
 205   cm_return_val_if_fail (GTK_IS_CMOPTION_MENU (option_menu), NULL);
 206
 207   return option_menu->menu;
 208 }
 209
 210 static void
 211 gtk_cmoption_menu_detacher (GtkWidget     *widget,
 212                           GtkMenu       *menu)
 213 {
 214   GtkCMOptionMenu *option_menu;
 215
 216   cm_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 217
 218   option_menu = GTK_CMOPTION_MENU (widget);
 219   cm_return_if_fail (option_menu->menu == (GtkWidget*) menu);
 220
 221   gtk_cmoption_menu_remove_contents (option_menu);
 222   g_signal_handlers_disconnect_by_func (option_menu->menu,
 223                                         gtk_cmoption_menu_selection_done,
 224                                         option_menu);
 225   g_signal_handlers_disconnect_by_func (option_menu->menu,
 226                                         gtk_cmoption_menu_calc_size,
 227                                         option_menu);
 228
 229   option_menu->menu = NULL;
 230   g_object_notify (G_OBJECT (option_menu), "menu");
 231 }
 232
 233 void
 234 gtk_cmoption_menu_set_menu (GtkCMOptionMenu *option_menu,
 235                           GtkWidget     *menu)
 236 {
 237   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 238   cm_return_if_fail (GTK_IS_MENU (menu));
 239
 240   if (option_menu->menu != menu)
 241     {
 242       gtk_cmoption_menu_remove_menu (option_menu);
 243
 244       option_menu->menu = menu;
 245       gtk_menu_attach_to_widget (GTK_MENU (menu),
 246                                  GTK_WIDGET (option_menu),
 247                                  gtk_cmoption_menu_detacher);
 248
 249       gtk_cmoption_menu_calc_size (option_menu);
 250
 251       g_signal_connect_after (option_menu->menu, "selection-done",
 252                               G_CALLBACK (gtk_cmoption_menu_selection_done),
 253                               option_menu);
 254       g_signal_connect_swapped (option_menu->menu, "size_request",
 255                                 G_CALLBACK (gtk_cmoption_menu_calc_size),
 256                                 option_menu);
 257
 258       if (GTK_WIDGET (option_menu)->parent)
 259         gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 260
 261       gtk_cmoption_menu_update_contents (option_menu);
 262
 263       g_object_notify (G_OBJECT (option_menu), "menu");
 264     }
 265 }
 266
 267 void
 268 gtk_cmoption_menu_remove_menu (GtkCMOptionMenu *option_menu)
 269 {
 270   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 271
 272   if (option_menu->menu)
 273     {
 274       if (GTK_MENU_SHELL (option_menu->menu)->active)
 275         gtk_menu_shell_cancel (GTK_MENU_SHELL (option_menu->menu));
 276
 277       gtk_menu_detach (GTK_MENU (option_menu->menu));
 278     }
 279 }
 280
 281 void
 282 gtk_cmoption_menu_set_history (GtkCMOptionMenu *option_menu,
 283                              guint          index)
 284 {
 285   GtkWidget *menu_item;
 286
 287   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 288
 289   if (option_menu->menu)
 290     {
 291       gtk_menu_set_active (GTK_MENU (option_menu->menu), index);
 292       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 293
 294       if (menu_item != option_menu->menu_item)
 295         gtk_cmoption_menu_update_contents (option_menu);
 296     }
 297 }
 298
 299 /**
 300  * gtk_cmoption_menu_get_history:
 301  * @option_menu: a #GtkCMOptionMenu
 302  *
 303  * Retrieves the index of the currently selected menu item. The menu
 304  * items are numbered from top to bottom, starting with 0.
 305  *
 306  * Return value: index of the selected menu item, or -1 if there are no menu items
 307  * Deprecated: 2.4: Use #GtkComboBox instead.
 308  **/
 309 gint
 310 gtk_cmoption_menu_get_history (GtkCMOptionMenu *option_menu)
 311 {
 312   GtkWidget *active_widget;
 313
 314   cm_return_val_if_fail (GTK_IS_CMOPTION_MENU (option_menu), -1);
 315
 316   if (option_menu->menu)
 317     {
 318       active_widget = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 319
 320       if (active_widget)
 321         return g_list_index (GTK_MENU_SHELL (option_menu->menu)->children,
 322                              active_widget);
 323       else
 324         return -1;
 325     }
 326   else
 327     return -1;
 328 }
 329
 330 static void
 331 gtk_cmoption_menu_set_property (GObject            *object,
 332                               guint               prop_id,
 333                               const GValue       *value,
 334                               GParamSpec         *pspec)
 335 {
 336   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (object);
 337
 338   switch (prop_id)
 339     {
 340     case PROP_MENU:
 341       gtk_cmoption_menu_set_menu (option_menu, g_value_get_object (value));
 342       break;
 343
 344     default:
 345       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 346       break;
 347     }
 348 }
 349
 350 static void
 351 gtk_cmoption_menu_get_property (GObject            *object,
 352                               guint               prop_id,
 353                               GValue             *value,
 354                               GParamSpec         *pspec)
 355 {
 356   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (object);
 357
 358   switch (prop_id)
 359     {
 360     case PROP_MENU:
 361       g_value_set_object (value, option_menu->menu);
 362       break;
 363
 364     default:
 365       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 366       break;
 367     }
 368 }
 369
 370 static void
 371 gtk_cmoption_menu_destroy (GtkObject *object)
 372 {
 373   GtkCMOptionMenu *option_menu;
 374
 375   cm_return_if_fail (GTK_IS_CMOPTION_MENU (object));
 376
 377   option_menu = GTK_CMOPTION_MENU (object);
 378
 379   if (option_menu->menu)
 380     gtk_widget_destroy (option_menu->menu);
 381
 382   if (GTK_OBJECT_CLASS (gtk_cmoption_menu_parent_class)->destroy)
 383     (* GTK_OBJECT_CLASS (gtk_cmoption_menu_parent_class)->destroy) (object);
 384 }
 385
 386 static void
 387 gtk_cmoption_menu_get_props (GtkCMOptionMenu       *option_menu,
 388                            GtkCMOptionMenuProps  *props)
 389 {
 390   GtkRequisition *indicator_size;
 391   GtkBorder *indicator_spacing;
 392
 393   gtk_widget_style_get (GTK_WIDGET (option_menu),
 394                         "indicator-size", &indicator_size,
 395                         "indicator-spacing", &indicator_spacing,
 396                         "interior-focus", &props->interior_focus,
 397                         "focus-line-width", &props->focus_width,
 398                         "focus-padding", &props->focus_pad,
 399                         NULL);
 400
 401   if (indicator_size)
 402     props->indicator_size = *indicator_size;
 403   else
 404     props->indicator_size = default_props.indicator_size;
 405
 406   if (indicator_spacing)
 407     props->indicator_spacing = *indicator_spacing;
 408   else
 409     props->indicator_spacing = default_props.indicator_spacing;
 410
 411   gtk_requisition_free (indicator_size);
 412   gtk_border_free (indicator_spacing);
 413 }
 414
 415 static void
 416 gtk_cmoption_menu_size_request (GtkWidget      *widget,
 417                               GtkRequisition *requisition)
 418 {
 419   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (widget);
 420   GtkCMOptionMenuProps props;
 421   gint tmp;
 422   GtkRequisition child_requisition = { 0, 0 };
 423
 424   gtk_cmoption_menu_get_props (option_menu, &props);
 425
 426   if (GTK_BIN (option_menu)->child && gtkut_widget_get_visible (GTK_BIN (option_menu)->child))
 427     {
 428       gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);
 429
 430       requisition->width += child_requisition.width;
 431       requisition->height += child_requisition.height;
 432     }
 433
 434   requisition->width = ((GTK_CONTAINER (widget)->border_width +
 435                          GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +
 436                         MAX (child_requisition.width, option_menu->width) +
 437                         props.indicator_size.width +
 438                         props.indicator_spacing.left + props.indicator_spacing.right +
 439                         CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);
 440   requisition->height = ((GTK_CONTAINER (widget)->border_width +
 441                           GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +
 442                          MAX (child_requisition.height, option_menu->height) +
 443                          CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);
 444
 445   tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +
 446          props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);
 447   requisition->height = MAX (requisition->height, tmp);
 448 }
 449
 450 static void
 451 gtk_cmoption_menu_size_allocate (GtkWidget     *widget,
 452                                GtkAllocation *allocation)
 453 {
 454   GtkWidget *child;
 455   GtkButton *button = GTK_BUTTON (widget);
 456   GtkAllocation child_allocation;
 457   GtkCMOptionMenuProps props;
 458   gint border_width;
 459
 460   gtk_cmoption_menu_get_props (GTK_CMOPTION_MENU (widget), &props);
 461   border_width = GTK_CONTAINER (widget)->border_width;
 462
 463   widget->allocation = *allocation;
 464   if (gtkut_widget_get_realized (widget))
 465     gdk_window_move_resize (button->event_window,
 466                             allocation->x + border_width, allocation->y + border_width,
 467                             allocation->width - border_width * 2, allocation->height - border_width * 2);
 468
 469   child = GTK_BIN (widget)->child;
 470   if (child && gtkut_widget_get_visible (child))
 471     {
 472       gint xthickness = GTK_WIDGET (widget)->style->xthickness;
 473       gint ythickness = GTK_WIDGET (widget)->style->ythickness;
 474
 475       child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;
 476       child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;
 477       child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -
 478                                     props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -
 479                                     CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);
 480       child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -
 481                                      CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);
 482
 483       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 484         child_allocation.x += props.indicator_size.width + props.indicator_spacing.left + props.indicator_spacing.right;
 485
 486       gtk_widget_size_allocate (child, &child_allocation);
 487     }
 488 }
 489
 490 static void
 491 gtk_cmoption_menu_paint (GtkWidget    *widget,
 492                        GdkRectangle *area)
 493 {
 494   GdkRectangle button_area;
 495   GtkCMOptionMenuProps props;
 496   gint border_width;
 497   gint tab_x;
 498
 499   cm_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 500   cm_return_if_fail (area != NULL);
 501
 502   if (gtkut_widget_is_drawable (widget))
 503     {
 504       border_width = GTK_CONTAINER (widget)->border_width;
 505       gtk_cmoption_menu_get_props (GTK_CMOPTION_MENU (widget), &props);
 506
 507       button_area.x = widget->allocation.x + border_width;
 508       button_area.y = widget->allocation.y + border_width;
 509       button_area.width = widget->allocation.width - 2 * border_width;
 510       button_area.height = widget->allocation.height - 2 * border_width;
 511
 512       if (!props.interior_focus && gtkut_widget_has_focus (widget))
 513         {
 514           button_area.x += props.focus_width + props.focus_pad;
 515           button_area.y += props.focus_width + props.focus_pad;
 516           button_area.width -= 2 * (props.focus_width + props.focus_pad);
 517           button_area.height -= 2 * (props.focus_width + props.focus_pad);
 518         }
 519
 520       gtk_paint_box (widget->style, widget->window,
 521                      gtkut_widget_get_state (widget), GTK_SHADOW_OUT,
 522                      area, widget, "optionmenu",
 523                      button_area.x, button_area.y,
 524                      button_area.width, button_area.height);
 525
 526       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 527         tab_x = button_area.x + props.indicator_spacing.right +
 528           widget->style->xthickness;
 529       else
 530         tab_x = button_area.x + button_area.width -
 531           props.indicator_size.width - props.indicator_spacing.right -
 532           widget->style->xthickness;
 533
 534       gtk_paint_tab (widget->style, widget->window,
 535                      gtkut_widget_get_state (widget), GTK_SHADOW_OUT,
 536                      area, widget, "optionmenutab",
 537                      tab_x,
 538                      button_area.y + (button_area.height - props.indicator_size.height) / 2,
 539                      props.indicator_size.width, props.indicator_size.height);
 540
 541       if (gtkut_widget_has_focus (widget))
 542         {
 543           if (props.interior_focus)
 544             {
 545               button_area.x += widget->style->xthickness + props.focus_pad;
 546               button_area.y += widget->style->ythickness + props.focus_pad;
 547               button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +
 548                       props.indicator_spacing.left +
 549                       props.indicator_spacing.right +
 550                       props.indicator_size.width;
 551               button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);
 552               if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 553                 button_area.x += props.indicator_spacing.left +
 554                   props.indicator_spacing.right +
 555                   props.indicator_size.width;
 556             }
 557           else
 558             {
 559               button_area.x -= props.focus_width + props.focus_pad;
 560               button_area.y -= props.focus_width + props.focus_pad;
 561               button_area.width += 2 * (props.focus_width + props.focus_pad);
 562               button_area.height += 2 * (props.focus_width + props.focus_pad);
 563             }
 564
 565           gtk_paint_focus (widget->style, widget->window, gtkut_widget_get_state (widget),
 566                            area, widget, "button",
 567                            button_area.x,
 568                            button_area.y,
 569                            button_area.width,
 570                            button_area.height);
 571         }
 572     }
 573 }
 574
 575 static gint
 576 gtk_cmoption_menu_expose (GtkWidget      *widget,
 577                         GdkEventExpose *event)
 578 {
 579   cm_return_val_if_fail (GTK_IS_CMOPTION_MENU (widget), FALSE);
 580   cm_return_val_if_fail (event != NULL, FALSE);
 581
 582   if (gtkut_widget_is_drawable (widget))
 583     {
 584       gtk_cmoption_menu_paint (widget, &event->area);
 585
 586
 587       /* The following code tries to draw the child in two places at
 588        * once. It fails miserably for several reasons
 589        *
 590        * - If the child is not no-window, removing generates
 591        *   more expose events. Bad, bad, bad.
 592        *
 593        * - Even if the child is no-window, removing it now (properly)
 594        *   clears the space where it was, so it does no good
 595        */
 596
 597 #if 0
 598       remove_child = FALSE;
 599       child = GTK_BUTTON (widget)->child;
 600
 601       if (!child)
 602         {
 603           if (!GTK_CMOPTION_MENU (widget)->menu)
 604             return FALSE;
 605           gtk_cmoption_menu_update_contents (GTK_CMOPTION_MENU (widget));
 606           child = GTK_BUTTON (widget)->child;
 607           if (!child)
 608             return FALSE;
 609           remove_child = TRUE;
 610         }
 611
 612       child_event = *event;
 613
 614       if (GTK_WIDGET_NO_WINDOW (child) &&
 615           gtk_widget_intersect (child, &event->area, &child_event.area))
 616         gtk_widget_event (child, (GdkEvent*) &child_event);
 617
 618       if (remove_child)
 619         gtk_cmoption_menu_remove_contents (GTK_CMOPTION_MENU (widget));
 620 #else
 621       if (GTK_BIN (widget)->child)
 622         gtk_container_propagate_expose (GTK_CONTAINER (widget),
 623                                         GTK_BIN (widget)->child,
 624                                         event);
 625 #endif /* 0 */
 626     }
 627
 628   return FALSE;
 629 }
 630
 631 static gint
 632 gtk_cmoption_menu_button_press (GtkWidget      *widget,
 633                               GdkEventButton *event)
 634 {
 635   GtkCMOptionMenu *option_menu;
 636   GtkWidget *menu_item;
 637
 638   cm_return_val_if_fail (GTK_IS_CMOPTION_MENU (widget), FALSE);
 639   cm_return_val_if_fail (event != NULL, FALSE);
 640
 641   option_menu = GTK_CMOPTION_MENU (widget);
 642
 643   if ((event->type == GDK_BUTTON_PRESS) &&
 644       (event->button == 1))
 645     {
 646       gtk_cmoption_menu_remove_contents (option_menu);
 647       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 648                       gtk_cmoption_menu_position, option_menu,
 649                       event->button, event->time);
 650       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 651       if (menu_item)
 652         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 653       return TRUE;
 654     }
 655
 656   return FALSE;
 657 }
 658
 659 static gint
 660 gtk_cmoption_menu_key_press (GtkWidget   *widget,
 661                            GdkEventKey *event)
 662 {
 663   GtkCMOptionMenu *option_menu;
 664   GtkWidget *menu_item;
 665
 666   cm_return_val_if_fail (GTK_IS_CMOPTION_MENU (widget), FALSE);
 667   cm_return_val_if_fail (event != NULL, FALSE);
 668
 669   option_menu = GTK_CMOPTION_MENU (widget);
 670
 671   switch (event->keyval)
 672     {
 673     case GDK_KP_Space:
 674     case GDK_space:
 675       gtk_cmoption_menu_remove_contents (option_menu);
 676       gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
 677                       gtk_cmoption_menu_position, option_menu,
 678                       0, event->time);
 679       menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 680       if (menu_item)
 681         gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
 682       return TRUE;
 683     }
 684
 685   return FALSE;
 686 }
 687
 688 static void
 689 gtk_cmoption_menu_selection_done (GtkMenuShell  *menu_shell,
 690                                 GtkCMOptionMenu *option_menu)
 691 {
 692   cm_return_if_fail (menu_shell != NULL);
 693   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 694
 695   gtk_cmoption_menu_update_contents (option_menu);
 696 }
 697
 698 static void
 699 gtk_cmoption_menu_changed (GtkCMOptionMenu *option_menu)
 700 {
 701   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 702
 703   g_signal_emit (option_menu, signals[CHANGED], 0);
 704 }
 705
 706 static void
 707 gtk_cmoption_menu_select_first_sensitive (GtkCMOptionMenu *option_menu)
 708 {
 709   if (option_menu->menu)
 710     {
 711       GList *children = GTK_MENU_SHELL (option_menu->menu)->children;
 712       gint index = 0;
 713
 714       while (children)
 715         {
 716           if (gtkut_widget_get_sensitive (children->data))
 717             {
 718               gtk_cmoption_menu_set_history (option_menu, index);
 719               return;
 720             }
 721
 722           children = children->next;
 723           index++;
 724         }
 725     }
 726 }
 727
 728 static void
 729 gtk_cmoption_menu_item_state_changed_cb (GtkWidget      *widget,
 730                                        GtkStateType    previous_state,
 731                                        GtkCMOptionMenu  *option_menu)
 732 {
 733   GtkWidget *child = GTK_BIN (option_menu)->child;
 734
 735   if (child && gtkut_widget_get_sensitive (child) != gtkut_widget_is_sensitive (widget))
 736     gtk_widget_set_sensitive (child, gtkut_widget_is_sensitive (widget));
 737 }
 738
 739 static void
 740 gtk_cmoption_menu_item_destroy_cb (GtkWidget     *widget,
 741                                  GtkCMOptionMenu *option_menu)
 742 {
 743   GtkWidget *child = GTK_BIN (option_menu)->child;
 744
 745   if (child)
 746     {
 747       g_object_ref (child);
 748       gtk_cmoption_menu_remove_contents (option_menu);
 749       gtk_widget_destroy (child);
 750       g_object_unref (child);
 751
 752       gtk_cmoption_menu_select_first_sensitive (option_menu);
 753     }
 754 }
 755
 756 static void
 757 gtk_cmoption_menu_update_contents (GtkCMOptionMenu *option_menu)
 758 {
 759   GtkWidget *child;
 760   GtkRequisition child_requisition;
 761
 762   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 763
 764   if (option_menu->menu)
 765     {
 766       GtkWidget *old_item = option_menu->menu_item;
 767
 768       gtk_cmoption_menu_remove_contents (option_menu);
 769
 770       option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 771       if (option_menu->menu_item)
 772         {
 773           g_object_ref (option_menu->menu_item);
 774           child = GTK_BIN (option_menu->menu_item)->child;
 775           if (child)
 776             {
 777               if (!gtkut_widget_is_sensitive (option_menu->menu_item))
 778                 gtk_widget_set_sensitive (child, FALSE);
 779               gtk_widget_reparent (child, GTK_WIDGET (option_menu));
 780             }
 781
 782           g_signal_connect (option_menu->menu_item, "state_changed",
 783                             G_CALLBACK (gtk_cmoption_menu_item_state_changed_cb), option_menu);
 784           g_signal_connect (option_menu->menu_item, "destroy",
 785                             G_CALLBACK (gtk_cmoption_menu_item_destroy_cb), option_menu);
 786
 787           gtk_widget_size_request (child, &child_requisition);
 788           gtk_widget_size_allocate (GTK_WIDGET (option_menu),
 789                                     &(GTK_WIDGET (option_menu)->allocation));
 790
 791           if (gtkut_widget_is_drawable (GTK_WIDGET(option_menu)))
 792             gtk_widget_queue_draw (GTK_WIDGET (option_menu));
 793         }
 794
 795       if (old_item != option_menu->menu_item)
 796         gtk_cmoption_menu_changed (option_menu);
 797     }
 798 }
 799
 800 static void
 801 gtk_cmoption_menu_remove_contents (GtkCMOptionMenu *option_menu)
 802 {
 803   GtkWidget *child;
 804
 805   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 806
 807   if (option_menu->menu_item)
 808     {
 809       child = GTK_BIN (option_menu)->child;
 810
 811       if (child)
 812         {
 813           gtk_widget_set_sensitive (child, TRUE);
 814           gtk_widget_set_state (child, GTK_STATE_NORMAL);
 815           gtk_widget_reparent (child, option_menu->menu_item);
 816         }
 817
 818       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 819                                             gtk_cmoption_menu_item_state_changed_cb,
 820                                             option_menu);
 821       g_signal_handlers_disconnect_by_func (option_menu->menu_item,
 822                                             gtk_cmoption_menu_item_destroy_cb,
 823                                             option_menu);
 824
 825       g_object_unref (option_menu->menu_item);
 826       option_menu->menu_item = NULL;
 827     }
 828 }
 829
 830 static void
 831 gtk_cmoption_menu_calc_size (GtkCMOptionMenu *option_menu)
 832 {
 833   GtkWidget *child;
 834   GList *children;
 835   GtkRequisition child_requisition;
 836   gint old_width = option_menu->width;
 837   gint old_height = option_menu->height;
 838
 839   cm_return_if_fail (GTK_IS_CMOPTION_MENU (option_menu));
 840
 841   option_menu->width = 0;
 842   option_menu->height = 0;
 843
 844   if (option_menu->menu)
 845     {
 846       children = GTK_MENU_SHELL (option_menu->menu)->children;
 847       while (children)
 848         {
 849           child = children->data;
 850           children = children->next;
 851
 852           if (gtkut_widget_get_visible (child))
 853             {
 854               GtkWidget *inner = GTK_BIN (child)->child;
 855
 856               if (inner)
 857                 {
 858                   gtk_widget_size_request (inner, &child_requisition);
 859
 860                   option_menu->width = MAX (option_menu->width, child_requisition.width);
 861                   option_menu->height = MAX (option_menu->height, child_requisition.height);
 862                 }
 863             }
 864         }
 865     }
 866
 867   if (old_width != option_menu->width || old_height != option_menu->height)
 868     gtk_widget_queue_resize (GTK_WIDGET (option_menu));
 869 }
 870
 871 static void
 872 gtk_cmoption_menu_position (GtkMenu  *menu,
 873                           gint     *x,
 874                           gint     *y,
 875                           gboolean *push_in,
 876                           gpointer  user_data)
 877 {
 878   GtkCMOptionMenu *option_menu;
 879   GtkWidget *active;
 880   GtkWidget *child;
 881   GtkWidget *widget;
 882   GtkRequisition requisition;
 883   GList *children;
 884   gint screen_width;
 885   gint menu_xpos;
 886   gint menu_ypos;
 887   gint menu_width;
 888
 889   cm_return_if_fail (GTK_IS_CMOPTION_MENU (user_data));
 890
 891   option_menu = GTK_CMOPTION_MENU (user_data);
 892   widget = GTK_WIDGET (option_menu);
 893
 894   gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition);
 895   menu_width = requisition.width;
 896
 897   active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
 898   gdk_window_get_origin (widget->window, &menu_xpos, &menu_ypos);
 899
 900   menu_xpos += widget->allocation.x;
 901   menu_ypos += widget->allocation.y + widget->allocation.height / 2 - 2;
 902
 903   if (active != NULL)
 904     {
 905       gtk_widget_get_child_requisition (active, &requisition);
 906       menu_ypos -= requisition.height / 2;
 907     }
 908
 909   children = GTK_MENU_SHELL (option_menu->menu)->children;
 910   while (children)
 911     {
 912       child = children->data;
 913
 914       if (active == child)
 915         break;
 916
 917       if (gtkut_widget_get_visible (child))
 918         {
 919           gtk_widget_get_child_requisition (child, &requisition);
 920           menu_ypos -= requisition.height;
 921         }
 922
 923       children = children->next;
 924     }
 925
 926   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 927     menu_xpos = menu_xpos + widget->allocation.width - menu_width;
 928
 929   /* Clamp the position on screen */
 930   screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
 931
 932   if (menu_xpos < 0)
 933     menu_xpos = 0;
 934   else if ((menu_xpos + menu_width) > screen_width)
 935     menu_xpos -= ((menu_xpos + menu_width) - screen_width);
 936
 937   *x = menu_xpos;
 938   *y = menu_ypos;
 939   *push_in = TRUE;
 940 }
 941
 942
 943 static void
 944 gtk_cmoption_menu_show_all (GtkWidget *widget)
 945 {
 946   GtkContainer *container;
 947   GtkCMOptionMenu *option_menu;
 948
 949   cm_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 950   container = GTK_CONTAINER (widget);
 951   option_menu = GTK_CMOPTION_MENU (widget);
 952
 953   gtk_widget_show (widget);
 954   gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
 955   if (option_menu->menu)
 956     gtk_widget_show_all (option_menu->menu);
 957   if (option_menu->menu_item)
 958     gtk_widget_show_all (option_menu->menu_item);
 959 }
 960
 961
 962 static void
 963 gtk_cmoption_menu_hide_all (GtkWidget *widget)
 964 {
 965   GtkContainer *container;
 966
 967   cm_return_if_fail (GTK_IS_CMOPTION_MENU (widget));
 968   container = GTK_CONTAINER (widget);
 969
 970   gtk_widget_hide (widget);
 971   gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
 972 }
 973
 974 static gboolean
 975 gtk_cmoption_menu_mnemonic_activate (GtkWidget *widget,
 976                                    gboolean   group_cycling)
 977 {
 978   gtk_widget_grab_focus (widget);
 979   return TRUE;
 980 }
 981
 982 static gint
 983 gtk_cmoption_menu_scroll_event (GtkWidget          *widget,
 984                               GdkEventScroll     *event)
 985 {
 986   GtkCMOptionMenu *option_menu = GTK_CMOPTION_MENU (widget);
 987   gint index;
 988   gint n_children;
 989   gint index_dir;
 990   GList *l;
 991   GtkMenuItem *item;
 992
 993   index = gtk_cmoption_menu_get_history (option_menu);
 994
 995   if (index != -1)
 996     {
 997       n_children = g_list_length (GTK_MENU_SHELL (option_menu->menu)->children);
 998
 999       if (event->direction == GDK_SCROLL_UP)
1000         index_dir = -1;
1001       else
1002         index_dir = 1;
1003
1004
1005       while (TRUE)
1006         {
1007           index += index_dir;
1008
1009           if (index < 0)
1010             break;
1011           if (index >= n_children)
1012             break;
1013
1014           l = g_list_nth (GTK_MENU_SHELL (option_menu->menu)->children, index);
1015           item = GTK_MENU_ITEM (l->data);
1016           if (gtkut_widget_get_visible (GTK_WIDGET(item)) &&
1017               gtkut_widget_is_sensitive (GTK_WIDGET(item)))
1018             {
1019               gtk_cmoption_menu_set_history (option_menu, index);
1020               gtk_menu_item_activate (GTK_MENU_ITEM (item));
1021               break;
1022             }
1023
1024         }
1025     }
1026
1027   return TRUE;
1028 }
1029