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

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2001.  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 "gtkcheckmenuitem.h"
  29 #include "gtkaccellabel.h"
  30 #include "gtkactivatable.h"
  31 #include "gtktoggleaction.h"
  32 #include "gtkmarshalers.h"
  33 #include "gtkprivate.h"
  34 #include "gtkintl.h"
  35
  36
  37 enum {
  38   TOGGLED,
  39   LAST_SIGNAL
  40 };
  41
  42 enum {
  43   PROP_0,
  44   PROP_ACTIVE,
  45   PROP_INCONSISTENT,
  46   PROP_DRAW_AS_RADIO
  47 };
  48
  49 static gint gtk_check_menu_item_expose               (GtkWidget             *widget,
  50                                                       GdkEventExpose        *event);
  51 static void gtk_check_menu_item_activate             (GtkMenuItem           *menu_item);
  52 static void gtk_check_menu_item_toggle_size_request  (GtkMenuItem           *menu_item,
  53                                                       gint                  *requisition);
  54 static void gtk_check_menu_item_draw_indicator       (GtkCheckMenuItem      *check_menu_item,
  55                                                       GdkRectangle          *area);
  56 static void gtk_real_check_menu_item_draw_indicator  (GtkCheckMenuItem      *check_menu_item,
  57                                                       GdkRectangle          *area);
  58 static void gtk_check_menu_item_set_property         (GObject               *object,
  59                                                       guint                  prop_id,
  60                                                       const GValue          *value,
  61                                                       GParamSpec            *pspec);
  62 static void gtk_check_menu_item_get_property         (GObject               *object,
  63                                                       guint                  prop_id,
  64                                                       GValue                *value,
  65                                                       GParamSpec            *pspec);
  66
  67 static void gtk_check_menu_item_activatable_interface_init (GtkActivatableIface  *iface);
  68 static void gtk_check_menu_item_update                     (GtkActivatable       *activatable,
  69                                                             GtkAction            *action,
  70                                                             const gchar          *property_name);
  71 static void gtk_check_menu_item_sync_action_properties     (GtkActivatable       *activatable,
  72                                                             GtkAction            *action);
  73
  74 static GtkActivatableIface *parent_activatable_iface;
  75 static guint                check_menu_item_signals[LAST_SIGNAL] = { 0 };
  76
  77 G_DEFINE_TYPE_WITH_CODE (GtkCheckMenuItem, gtk_check_menu_item, GTK_TYPE_MENU_ITEM,
  78                          G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIVATABLE,
  79                                                 gtk_check_menu_item_activatable_interface_init))
  80
  81 static void
  82 gtk_check_menu_item_class_init (GtkCheckMenuItemClass *klass)
  83 {
  84   GObjectClass *gobject_class;
  85   GtkWidgetClass *widget_class;
  86   GtkMenuItemClass *menu_item_class;
  87
  88   gobject_class = G_OBJECT_CLASS (klass);
  89   widget_class = (GtkWidgetClass*) klass;
  90   menu_item_class = (GtkMenuItemClass*) klass;
  91
  92   gobject_class->set_property = gtk_check_menu_item_set_property;
  93   gobject_class->get_property = gtk_check_menu_item_get_property;
  94
  95   g_object_class_install_property (gobject_class,
  96                                    PROP_ACTIVE,
  97                                    g_param_spec_boolean ("active",
  98                                                          P_("Active"),
  99                                                          P_("Whether the menu item is checked"),
 100                                                          FALSE,
 101                                                          GTK_PARAM_READWRITE));
 102
 103   g_object_class_install_property (gobject_class,
 104                                    PROP_INCONSISTENT,
 105                                    g_param_spec_boolean ("inconsistent",
 106                                                          P_("Inconsistent"),
 107                                                          P_("Whether to display an \"inconsistent\" state"),
 108                                                          FALSE,
 109                                                          GTK_PARAM_READWRITE));
 110
 111   g_object_class_install_property (gobject_class,
 112                                    PROP_DRAW_AS_RADIO,
 113                                    g_param_spec_boolean ("draw-as-radio",
 114                                                          P_("Draw as radio menu item"),
 115                                                          P_("Whether the menu item looks like a radio menu item"),
 116                                                          FALSE,
 117                                                          GTK_PARAM_READWRITE));
 118
 119   gtk_widget_class_install_style_property (widget_class,
 120                                            g_param_spec_int ("indicator-size",
 121                                                              P_("Indicator Size"),
 122                                                              P_("Size of check or radio indicator"),
 123                                                              0,
 124                                                              G_MAXINT,
 125                                                              13,
 126                                                              GTK_PARAM_READABLE));
 127
 128   widget_class->expose_event = gtk_check_menu_item_expose;
 129
 130   menu_item_class->activate = gtk_check_menu_item_activate;
 131   menu_item_class->hide_on_activate = FALSE;
 132   menu_item_class->toggle_size_request = gtk_check_menu_item_toggle_size_request;
 133
 134   klass->toggled = NULL;
 135   klass->draw_indicator = gtk_real_check_menu_item_draw_indicator;
 136
 137   check_menu_item_signals[TOGGLED] =
 138     g_signal_new (I_("toggled"),
 139                   G_OBJECT_CLASS_TYPE (gobject_class),
 140                   G_SIGNAL_RUN_FIRST,
 141                   G_STRUCT_OFFSET (GtkCheckMenuItemClass, toggled),
 142                   NULL, NULL,
 143                   _gtk_marshal_VOID__VOID,
 144                   G_TYPE_NONE, 0);
 145 }
 146
 147 static void
 148 gtk_check_menu_item_activatable_interface_init (GtkActivatableIface  *iface)
 149 {
 150   parent_activatable_iface = g_type_interface_peek_parent (iface);
 151   iface->update = gtk_check_menu_item_update;
 152   iface->sync_action_properties = gtk_check_menu_item_sync_action_properties;
 153 }
 154
 155 static void
 156 gtk_check_menu_item_update (GtkActivatable *activatable,
 157                             GtkAction      *action,
 158                             const gchar    *property_name)
 159 {
 160   GtkCheckMenuItem *check_menu_item;
 161
 162   check_menu_item = GTK_CHECK_MENU_ITEM (activatable);
 163
 164   parent_activatable_iface->update (activatable, action, property_name);
 165
 166   if (strcmp (property_name, "active") == 0)
 167     {
 168       gtk_action_block_activate (action);
 169       gtk_check_menu_item_set_active (check_menu_item, gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)));
 170       gtk_action_unblock_activate (action);
 171     }
 172
 173   if (!gtk_activatable_get_use_action_appearance (activatable))
 174     return;
 175
 176   if (strcmp (property_name, "draw-as-radio") == 0)
 177     gtk_check_menu_item_set_draw_as_radio (check_menu_item,
 178                                            gtk_toggle_action_get_draw_as_radio (GTK_TOGGLE_ACTION (action)));
 179 }
 180
 181 static void
 182 gtk_check_menu_item_sync_action_properties (GtkActivatable *activatable,
 183                                             GtkAction      *action)
 184 {
 185   GtkCheckMenuItem *check_menu_item;
 186
 187   check_menu_item = GTK_CHECK_MENU_ITEM (activatable);
 188
 189   parent_activatable_iface->sync_action_properties (activatable, action);
 190
 191   if (!GTK_IS_TOGGLE_ACTION (action))
 192     return;
 193
 194   gtk_action_block_activate (action);
 195   gtk_check_menu_item_set_active (check_menu_item, gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)));
 196   gtk_action_unblock_activate (action);
 197
 198   if (!gtk_activatable_get_use_action_appearance (activatable))
 199     return;
 200
 201   gtk_check_menu_item_set_draw_as_radio (check_menu_item,
 202                                          gtk_toggle_action_get_draw_as_radio (GTK_TOGGLE_ACTION (action)));
 203 }
 204
 205 GtkWidget*
 206 gtk_check_menu_item_new (void)
 207 {
 208   return g_object_new (GTK_TYPE_CHECK_MENU_ITEM, NULL);
 209 }
 210
 211 GtkWidget*
 212 gtk_check_menu_item_new_with_label (const gchar *label)
 213 {
 214   return g_object_new (GTK_TYPE_CHECK_MENU_ITEM,
 215                        "label", label,
 216                        NULL);
 217 }
 218
 219
 220 /**
 221  * gtk_check_menu_item_new_with_mnemonic:
 222  * @label: The text of the button, with an underscore in front of the
 223  *         mnemonic character
 224  * @returns: a new #GtkCheckMenuItem
 225  *
 226  * Creates a new #GtkCheckMenuItem containing a label. The label
 227  * will be created using gtk_label_new_with_mnemonic(), so underscores
 228  * in @label indicate the mnemonic for the menu item.
 229  **/
 230 GtkWidget*
 231 gtk_check_menu_item_new_with_mnemonic (const gchar *label)
 232 {
 233   return g_object_new (GTK_TYPE_CHECK_MENU_ITEM,
 234                        "label", label,
 235                        "use-underline", TRUE,
 236                        NULL);
 237 }
 238
 239 void
 240 gtk_check_menu_item_set_active (GtkCheckMenuItem *check_menu_item,
 241                                 gboolean          is_active)
 242 {
 243   g_return_if_fail (GTK_IS_CHECK_MENU_ITEM (check_menu_item));
 244
 245   is_active = is_active != 0;
 246
 247   if (check_menu_item->active != is_active)
 248     gtk_menu_item_activate (GTK_MENU_ITEM (check_menu_item));
 249 }
 250
 251 /**
 252  * gtk_check_menu_item_get_active:
 253  * @check_menu_item: a #GtkCheckMenuItem
 254  *
 255  * Returns whether the check menu item is active. See
 256  * gtk_check_menu_item_set_active ().
 257  *
 258  * Return value: %TRUE if the menu item is checked.
 259  */
 260 gboolean
 261 gtk_check_menu_item_get_active (GtkCheckMenuItem *check_menu_item)
 262 {
 263   g_return_val_if_fail (GTK_IS_CHECK_MENU_ITEM (check_menu_item), FALSE);
 264
 265   return check_menu_item->active;
 266 }
 267
 268 static void
 269 gtk_check_menu_item_toggle_size_request (GtkMenuItem *menu_item,
 270                                          gint        *requisition)
 271 {
 272   guint toggle_spacing;
 273   guint indicator_size;
 274
 275   g_return_if_fail (GTK_IS_CHECK_MENU_ITEM (menu_item));
 276
 277   gtk_widget_style_get (GTK_WIDGET (menu_item),
 278                         "toggle-spacing", &toggle_spacing,
 279                         "indicator-size", &indicator_size,
 280                         NULL);
 281
 282   *requisition = indicator_size + toggle_spacing;
 283 }
 284
 285 void
 286 gtk_check_menu_item_toggled (GtkCheckMenuItem *check_menu_item)
 287 {
 288   g_signal_emit (check_menu_item, check_menu_item_signals[TOGGLED], 0);
 289 }
 290
 291 /**
 292  * gtk_check_menu_item_set_inconsistent:
 293  * @check_menu_item: a #GtkCheckMenuItem
 294  * @setting: %TRUE to display an "inconsistent" third state check
 295  *
 296  * If the user has selected a range of elements (such as some text or
 297  * spreadsheet cells) that are affected by a boolean setting, and the
 298  * current values in that range are inconsistent, you may want to
 299  * display the check in an "in between" state. This function turns on
 300  * "in between" display.  Normally you would turn off the inconsistent
 301  * state again if the user explicitly selects a setting. This has to be
 302  * done manually, gtk_check_menu_item_set_inconsistent() only affects
 303  * visual appearance, it doesn't affect the semantics of the widget.
 304  *
 305  **/
 306 void
 307 gtk_check_menu_item_set_inconsistent (GtkCheckMenuItem *check_menu_item,
 308                                       gboolean          setting)
 309 {
 310   g_return_if_fail (GTK_IS_CHECK_MENU_ITEM (check_menu_item));
 311
 312   setting = setting != FALSE;
 313
 314   if (setting != check_menu_item->inconsistent)
 315     {
 316       check_menu_item->inconsistent = setting;
 317       gtk_widget_queue_draw (GTK_WIDGET (check_menu_item));
 318       g_object_notify (G_OBJECT (check_menu_item), "inconsistent");
 319     }
 320 }
 321
 322 /**
 323  * gtk_check_menu_item_get_inconsistent:
 324  * @check_menu_item: a #GtkCheckMenuItem
 325  *
 326  * Retrieves the value set by gtk_check_menu_item_set_inconsistent().
 327  *
 328  * Return value: %TRUE if inconsistent
 329  **/
 330 gboolean
 331 gtk_check_menu_item_get_inconsistent (GtkCheckMenuItem *check_menu_item)
 332 {
 333   g_return_val_if_fail (GTK_IS_CHECK_MENU_ITEM (check_menu_item), FALSE);
 334
 335   return check_menu_item->inconsistent;
 336 }
 337
 338 /**
 339  * gtk_check_menu_item_set_draw_as_radio:
 340  * @check_menu_item: a #GtkCheckMenuItem
 341  * @draw_as_radio: whether @check_menu_item is drawn like a #GtkRadioMenuItem
 342  *
 343  * Sets whether @check_menu_item is drawn like a #GtkRadioMenuItem
 344  *
 345  * Since: 2.4
 346  **/
 347 void
 348 gtk_check_menu_item_set_draw_as_radio (GtkCheckMenuItem *check_menu_item,
 349                                        gboolean          draw_as_radio)
 350 {
 351   g_return_if_fail (GTK_IS_CHECK_MENU_ITEM (check_menu_item));
 352
 353   draw_as_radio = draw_as_radio != FALSE;
 354
 355   if (draw_as_radio != check_menu_item->draw_as_radio)
 356     {
 357       check_menu_item->draw_as_radio = draw_as_radio;
 358
 359       gtk_widget_queue_draw (GTK_WIDGET (check_menu_item));
 360
 361       g_object_notify (G_OBJECT (check_menu_item), "draw-as-radio");
 362     }
 363 }
 364
 365 /**
 366  * gtk_check_menu_item_get_draw_as_radio:
 367  * @check_menu_item: a #GtkCheckMenuItem
 368  *
 369  * Returns whether @check_menu_item looks like a #GtkRadioMenuItem
 370  *
 371  * Return value: Whether @check_menu_item looks like a #GtkRadioMenuItem
 372  *
 373  * Since: 2.4
 374  **/
 375 gboolean
 376 gtk_check_menu_item_get_draw_as_radio (GtkCheckMenuItem *check_menu_item)
 377 {
 378   g_return_val_if_fail (GTK_IS_CHECK_MENU_ITEM (check_menu_item), FALSE);
 379
 380   return check_menu_item->draw_as_radio;
 381 }
 382
 383 static void
 384 gtk_check_menu_item_init (GtkCheckMenuItem *check_menu_item)
 385 {
 386   check_menu_item->active = FALSE;
 387   check_menu_item->always_show_toggle = TRUE;
 388 }
 389
 390 static gint
 391 gtk_check_menu_item_expose (GtkWidget      *widget,
 392                             GdkEventExpose *event)
 393 {
 394   if (GTK_WIDGET_CLASS (gtk_check_menu_item_parent_class)->expose_event)
 395     GTK_WIDGET_CLASS (gtk_check_menu_item_parent_class)->expose_event (widget, event);
 396
 397   gtk_check_menu_item_draw_indicator (GTK_CHECK_MENU_ITEM (widget), &event->area);
 398
 399   return FALSE;
 400 }
 401
 402 static void
 403 gtk_check_menu_item_activate (GtkMenuItem *menu_item)
 404 {
 405   GtkCheckMenuItem *check_menu_item = GTK_CHECK_MENU_ITEM (menu_item);
 406   check_menu_item->active = !check_menu_item->active;
 407
 408   gtk_check_menu_item_toggled (check_menu_item);
 409   gtk_widget_queue_draw (GTK_WIDGET (check_menu_item));
 410
 411   GTK_MENU_ITEM_CLASS (gtk_check_menu_item_parent_class)->activate (menu_item);
 412
 413   g_object_notify (G_OBJECT (check_menu_item), "active");
 414 }
 415
 416 static void
 417 gtk_check_menu_item_draw_indicator (GtkCheckMenuItem *check_menu_item,
 418                                     GdkRectangle     *area)
 419 {
 420   if (GTK_CHECK_MENU_ITEM_GET_CLASS (check_menu_item)->draw_indicator)
 421     GTK_CHECK_MENU_ITEM_GET_CLASS (check_menu_item)->draw_indicator (check_menu_item, area);
 422 }
 423
 424 static void
 425 gtk_real_check_menu_item_draw_indicator (GtkCheckMenuItem *check_menu_item,
 426                                          GdkRectangle     *area)
 427 {
 428   GtkWidget *widget;
 429   GtkStateType state_type;
 430   GtkShadowType shadow_type;
 431   gint x, y;
 432
 433   widget = GTK_WIDGET (check_menu_item);
 434
 435   if (gtk_widget_is_drawable (widget))
 436     {
 437       guint offset;
 438       guint toggle_size;
 439       guint toggle_spacing;
 440       guint horizontal_padding;
 441       guint indicator_size;
 442
 443       gtk_widget_style_get (widget,
 444                             "toggle-spacing", &toggle_spacing,
 445                             "horizontal-padding", &horizontal_padding,
 446                             "indicator-size", &indicator_size,
 447                             NULL);
 448
 449       toggle_size = GTK_MENU_ITEM (check_menu_item)->toggle_size;
 450       offset = GTK_CONTAINER (check_menu_item)->border_width +
 451         widget->style->xthickness + 2;
 452
 453       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 454         {
 455           x = widget->allocation.x + offset + horizontal_padding +
 456             (toggle_size - toggle_spacing - indicator_size) / 2;
 457         }
 458       else
 459         {
 460           x = widget->allocation.x + widget->allocation.width -
 461             offset - horizontal_padding - toggle_size + toggle_spacing +
 462             (toggle_size - toggle_spacing - indicator_size) / 2;
 463         }
 464
 465       y = widget->allocation.y + (widget->allocation.height - indicator_size) / 2;
 466
 467       if (check_menu_item->active ||
 468           check_menu_item->always_show_toggle ||
 469           (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT))
 470         {
 471           state_type = gtk_widget_get_state (widget);
 472
 473           if (check_menu_item->inconsistent)
 474             shadow_type = GTK_SHADOW_ETCHED_IN;
 475           else if (check_menu_item->active)
 476             shadow_type = GTK_SHADOW_IN;
 477           else
 478             shadow_type = GTK_SHADOW_OUT;
 479
 480           if (!gtk_widget_is_sensitive (widget))
 481             state_type = GTK_STATE_INSENSITIVE;
 482
 483           if (check_menu_item->draw_as_radio)
 484             {
 485               gtk_paint_option (widget->style, widget->window,
 486                                 state_type, shadow_type,
 487                                 area, widget, "option",
 488                                 x, y, indicator_size, indicator_size);
 489             }
 490           else
 491             {
 492               gtk_paint_check (widget->style, widget->window,
 493                                state_type, shadow_type,
 494                                area, widget, "check",
 495                                x, y, indicator_size, indicator_size);
 496             }
 497         }
 498     }
 499 }
 500
 501
 502 static void
 503 gtk_check_menu_item_get_property (GObject     *object,
 504                                   guint        prop_id,
 505                                   GValue      *value,
 506                                   GParamSpec  *pspec)
 507 {
 508   GtkCheckMenuItem *checkitem = GTK_CHECK_MENU_ITEM (object);
 509
 510   switch (prop_id)
 511     {
 512     case PROP_ACTIVE:
 513       g_value_set_boolean (value, checkitem->active);
 514       break;
 515     case PROP_INCONSISTENT:
 516       g_value_set_boolean (value, checkitem->inconsistent);
 517       break;
 518     case PROP_DRAW_AS_RADIO:
 519       g_value_set_boolean (value, checkitem->draw_as_radio);
 520       break;
 521     default:
 522       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 523       break;
 524     }
 525 }
 526
 527
 528 static void
 529 gtk_check_menu_item_set_property (GObject      *object,
 530                                   guint         prop_id,
 531                                   const GValue *value,
 532                                   GParamSpec   *pspec)
 533 {
 534   GtkCheckMenuItem *checkitem = GTK_CHECK_MENU_ITEM (object);
 535
 536   switch (prop_id)
 537     {
 538     case PROP_ACTIVE:
 539       gtk_check_menu_item_set_active (checkitem, g_value_get_boolean (value));
 540       break;
 541     case PROP_INCONSISTENT:
 542       gtk_check_menu_item_set_inconsistent (checkitem, g_value_get_boolean (value));
 543       break;
 544     case PROP_DRAW_AS_RADIO:
 545       gtk_check_menu_item_set_draw_as_radio (checkitem, g_value_get_boolean (value));
 546       break;
 547     default:
 548       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 549       break;
 550     }
 551 }