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

   1 /*
   2  * Copyright © 2011 Canonical Limited
   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 licence, 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  * Author: Ryan Lortie <desrt@desrt.ca>
  20  */
  21
  22 #include "config.h"
  23
  24 #include "gtkapplicationwindow.h"
  25
  26 #include "gtkapplicationprivate.h"
  27 #include "gtkmodelmenu.h"
  28 #include "gactionmuxer.h"
  29 #include "gtkaccelgroup.h"
  30 #include "gtkaccelmap.h"
  31 #include "gtkintl.h"
  32
  33 #include <gdk/gdk.h>
  34 #ifdef GDK_WINDOWING_X11
  35 #include <gdk/x11/gdkx.h>
  36 #endif
  37
  38 /**
  39  * SECTION:gtkapplicationwindow
  40  * @title: GtkApplicationWindow
  41  * @short_description: GtkWindow subclass with GtkApplication support
  42  *
  43  * GtkApplicationWindow is a #GtkWindow subclass that offers some
  44  * extra functionality for better integration with #GtkApplication
  45  * features.  Notably, it can handle both the application menu as well
  46  * as the menubar. See g_application_set_app_menu() and
  47  * g_application_set_menubar().
  48  *
  49  * This class implements the #GActionGroup and #GActionMap interfaces,
  50  * to let you add window-specific actions that will be exported by the
  51  * associated #GtkApplication, together with its application-wide
  52  * actions.  Window-specific actions are prefixed with the "win."
  53  * prefix and application-wide actions are prefixed with the "app."
  54  * prefix.  Actions must be addressed with the prefixed name when
  55  * referring to them from a #GMenuModel.
  56  *
  57  * The settings #GtkSettings:gtk-shell-shows-app-menu and
  58  * #GtkSettings:gtk-shell-shows-menubar tell GTK+ whether the
  59  * desktop environment is showing the application menu and menubar
  60  * models outside the application as part of the desktop shell.
  61  * For instance, on OS X, both menus will be displayed remotely;
  62  * on Windows neither will be. gnome-shell (starting with version 3.4)
  63  * will display the application menu, but not the menubar.
  64  *
  65  * If the desktop environment does not display the menubar, then
  66  * #GApplicationWindow will automatically show a #GtkMenubar for it.
  67  * This behaviour can be overridden with the #GtkApplicationWindow:show-menubar
  68  * property. If the desktop environment does not display the application
  69  * menu, then it will automatilly be included in the menubar.
  70  *
  71  * <example><title>A GtkApplicationWindow with a menubar</title>
  72  * <programlisting><![CDATA[
  73  * app = gtk_application_new ();
  74  *
  75  * builder = gtk_builder_new ();
  76  * gtk_builder_add_from_string (builder,
  77  *     "<interface>"
  78  *     "  <menu id='menubar'>"
  79  *     "    <submenu label='_Edit'>"
  80  *     "      <item label='_Copy' action='win.copy'/>"
  81  *     "      <item label='_Paste' action='win.paste'/>"
  82  *     "    </submenu>"
  83  *     "  </menu>"
  84  *     "</interface>");
  85  * g_application_set_menubar (G_APPLICATION (app),
  86  *                            G_MENU_MODEL (gtk_builder_get_object (builder, "menubar")));
  87  * g_object_unref (builder);
  88  *
  89  * ...
  90  *
  91  * window = gtk_application_window_new (app);
  92  * ]]>
  93  * </programlisting>
  94  * </example>
  95  */
  96
  97 typedef GSimpleActionGroupClass GtkApplicationWindowActionsClass;
  98 typedef struct
  99 {
 100   GSimpleActionGroup parent_instance;
 101   GtkWindow *window;
 102 } GtkApplicationWindowActions;
 103
 104 static GType gtk_application_window_actions_get_type   (void);
 105 static void  gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface);
 106 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindowActions, gtk_application_window_actions, G_TYPE_SIMPLE_ACTION_GROUP,
 107                          G_IMPLEMENT_INTERFACE (G_TYPE_REMOTE_ACTION_GROUP, gtk_application_window_actions_iface_init))
 108
 109 static void
 110 gtk_application_window_actions_activate_action_full (GRemoteActionGroup *remote,
 111                                                      const gchar        *action_name,
 112                                                      GVariant           *parameter,
 113                                                      GVariant           *platform_data)
 114 {
 115   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 116   GApplication *application;
 117   GApplicationClass *class;
 118
 119   application = G_APPLICATION (gtk_window_get_application (actions->window));
 120   class = G_APPLICATION_GET_CLASS (application);
 121
 122   class->before_emit (application, platform_data);
 123   g_action_group_activate_action (G_ACTION_GROUP (actions), action_name, parameter);
 124   class->after_emit (application, platform_data);
 125 }
 126
 127 static void
 128 gtk_application_window_actions_change_action_state_full (GRemoteActionGroup *remote,
 129                                                          const gchar        *action_name,
 130                                                          GVariant           *value,
 131                                                          GVariant           *platform_data)
 132 {
 133   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 134   GApplication *application;
 135   GApplicationClass *class;
 136
 137   application = G_APPLICATION (gtk_window_get_application (actions->window));
 138   class = G_APPLICATION_GET_CLASS (application);
 139
 140   class->before_emit (application, platform_data);
 141   g_action_group_change_action_state (G_ACTION_GROUP (actions), action_name, value);
 142   class->after_emit (application, platform_data);
 143 }
 144
 145 static void
 146 gtk_application_window_actions_init (GtkApplicationWindowActions *actions)
 147 {
 148 }
 149
 150 static void
 151 gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface)
 152 {
 153   iface->activate_action_full = gtk_application_window_actions_activate_action_full;
 154   iface->change_action_state_full = gtk_application_window_actions_change_action_state_full;
 155 }
 156
 157 static void
 158 gtk_application_window_actions_class_init (GtkApplicationWindowActionsClass *class)
 159 {
 160 }
 161
 162 static GSimpleActionGroup *
 163 gtk_application_window_actions_new (GtkApplicationWindow *window)
 164 {
 165   GtkApplicationWindowActions *actions;
 166
 167   actions = g_object_new (gtk_application_window_actions_get_type (), NULL);
 168   actions->window = GTK_WINDOW (window);
 169
 170   return G_SIMPLE_ACTION_GROUP (actions);
 171 }
 172
 173 /* Now onto GtkApplicationWindow... */
 174
 175 struct _GtkApplicationWindowPrivate
 176 {
 177   GSimpleActionGroup *actions;
 178   GActionObservable *muxer;
 179   GtkWidget *menubar;
 180   GtkAccelGroup *accels;
 181   GSList *accel_closures;
 182
 183   GMenu *app_menu_section;
 184   GMenu *menubar_section;
 185   gboolean show_menubar;
 186
 187   GDBusConnection *session;
 188   gchar           *object_path;
 189   guint            export_id;
 190 };
 191
 192 static void
 193 gtk_application_window_update_menubar (GtkApplicationWindow *window)
 194 {
 195   gboolean should_have_menubar;
 196   gboolean have_menubar;
 197
 198   have_menubar = window->priv->menubar != NULL;
 199
 200   should_have_menubar = window->priv->show_menubar &&
 201                         (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) ||
 202                          g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)));
 203
 204   if (have_menubar && !should_have_menubar)
 205     {
 206       gtk_widget_unparent (window->priv->menubar);
 207       window->priv->menubar = NULL;
 208
 209       gtk_widget_queue_resize (GTK_WIDGET (window));
 210     }
 211
 212   if (!have_menubar && should_have_menubar)
 213     {
 214       GMenu *combined;
 215
 216       combined = g_menu_new ();
 217       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->app_menu_section));
 218       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->menubar_section));
 219
 220       window->priv->menubar = gtk_model_menu_create_menu_bar (G_MENU_MODEL (combined), window->priv->muxer, window->priv->accels);
 221       gtk_widget_set_parent (window->priv->menubar, GTK_WIDGET (window));
 222       gtk_widget_show_all (window->priv->menubar);
 223       g_object_unref (combined);
 224
 225       gtk_widget_queue_resize (GTK_WIDGET (window));
 226     }
 227 }
 228
 229 static void
 230 gtk_application_window_update_shell_shows_app_menu (GtkApplicationWindow *window,
 231                                                     GtkSettings          *settings)
 232 {
 233   gboolean shown_by_shell;
 234
 235   g_object_get (settings, "gtk-shell-shows-app-menu", &shown_by_shell, NULL);
 236
 237   if (shown_by_shell)
 238     {
 239       /* the shell shows it, so don't show it locally */
 240       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) != 0)
 241         g_menu_remove (window->priv->app_menu_section, 0);
 242     }
 243   else
 244     {
 245       /* the shell does not show it, so make sure we show it */
 246       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) == 0)
 247         {
 248           GMenuModel *app_menu;
 249
 250           app_menu = g_application_get_app_menu (G_APPLICATION (gtk_window_get_application (GTK_WINDOW (window))));
 251
 252           if (app_menu != NULL)
 253             g_menu_append_submenu (window->priv->app_menu_section, _("Application"), app_menu);
 254         }
 255     }
 256 }
 257
 258 static void
 259 gtk_application_window_update_shell_shows_menubar (GtkApplicationWindow *window,
 260                                                    GtkSettings          *settings)
 261 {
 262   gboolean shown_by_shell;
 263
 264   g_object_get (settings, "gtk-shell-shows-menubar", &shown_by_shell, NULL);
 265
 266   if (shown_by_shell)
 267     {
 268       /* the shell shows it, so don't show it locally */
 269       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) != 0)
 270         g_menu_remove (window->priv->menubar_section, 0);
 271     }
 272   else
 273     {
 274       /* the shell does not show it, so make sure we show it */
 275       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) == 0)
 276         {
 277           GMenuModel *menubar;
 278
 279           menubar = g_application_get_menubar (G_APPLICATION (gtk_window_get_application (GTK_WINDOW (window))));
 280
 281           if (menubar != NULL)
 282             g_menu_append_section (window->priv->menubar_section, NULL, menubar);
 283         }
 284     }
 285 }
 286
 287 typedef struct {
 288   GClosure closure;
 289   gchar *action_name;
 290   GVariant *parameter;
 291 } AccelClosure;
 292
 293 static void
 294 accel_activate (GClosure     *closure,
 295                 GValue       *return_value,
 296                 guint         n_param_values,
 297                 const GValue *param_values,
 298                 gpointer      invocation_hint,
 299                 gpointer      marshal_data)
 300 {
 301   AccelClosure *aclosure = (AccelClosure*)closure;
 302   GActionGroup *actions;
 303
 304   actions = G_ACTION_GROUP (closure->data);
 305   if (g_action_group_get_action_enabled (actions, aclosure->action_name))
 306     {
 307        g_action_group_activate_action (actions, aclosure->action_name, aclosure->parameter);
 308
 309       /* we handled the accelerator */
 310       g_value_set_boolean (return_value, TRUE);
 311     }
 312 }
 313
 314 static void
 315 free_accel_closures (GtkApplicationWindow *window)
 316 {
 317   GSList *l;
 318
 319   for (l = window->priv->accel_closures; l; l = l->next)
 320     {
 321        AccelClosure *closure = l->data;
 322
 323        gtk_accel_group_disconnect (window->priv->accels, &closure->closure);
 324
 325        g_object_unref (closure->closure.data);
 326        if (closure->parameter)
 327          g_variant_unref (closure->parameter);
 328        g_free (closure->action_name);
 329        g_closure_invalidate (&closure->closure);
 330        g_closure_unref (&closure->closure);
 331     }
 332   g_slist_free (window->priv->accel_closures);
 333   window->priv->accel_closures = NULL;
 334 }
 335
 336 typedef struct {
 337   GtkApplicationWindow *window;
 338   GActionGroup *actions;
 339 } AccelData;
 340
 341 /* Hack. We iterate over the accel map instead of the actions,
 342  * in order to pull the parameters out of accel map entries
 343  */
 344 static void
 345 add_accel_closure (gpointer         data,
 346                    const gchar     *accel_path,
 347                    guint            accel_key,
 348                    GdkModifierType  accel_mods,
 349                    gboolean         changed)
 350 {
 351   AccelData *d = data;
 352   GtkApplicationWindow *window = d->window;
 353   GActionGroup *actions = d->actions;
 354   const gchar *path;
 355   const gchar *p;
 356   gchar *action_name;
 357   GVariant *parameter;
 358   AccelClosure *closure;
 359
 360   if (accel_key == 0)
 361     return;
 362
 363   if (!g_str_has_prefix (accel_path, "<Actions>/"))
 364     return;
 365
 366   path = accel_path + strlen ("<Actions>/");
 367   p = strchr (path, '/');
 368   if (p)
 369     {
 370       action_name = g_strndup (path, p - path);
 371       parameter = g_variant_parse (NULL, p + 1, NULL, NULL, NULL);
 372       if (!parameter)
 373         g_warning ("Failed to parse parameter from '%s'\n", accel_path);
 374     }
 375   else
 376     {
 377       action_name = g_strdup (path);
 378       parameter = NULL;
 379     }
 380
 381   if (g_action_group_has_action (actions, action_name))
 382     {
 383       closure = (AccelClosure*) g_closure_new_object (sizeof (AccelClosure), g_object_ref (actions));
 384       g_closure_set_marshal (&closure->closure, accel_activate);
 385
 386       closure->action_name = g_strdup (action_name);
 387       closure->parameter = parameter ? g_variant_ref_sink (parameter) : NULL;
 388
 389       window->priv->accel_closures = g_slist_prepend (window->priv->accel_closures, g_closure_ref (&closure->closure));
 390       g_closure_sink (&closure->closure);
 391
 392       gtk_accel_group_connect_by_path (window->priv->accels, accel_path, &closure->closure);
 393     }
 394
 395   g_free (action_name);
 396 }
 397
 398 static void
 399 gtk_application_window_update_accels (GtkApplicationWindow *window)
 400 {
 401   AccelData data;
 402
 403   free_accel_closures (window);
 404
 405   data.window = window;
 406   data.actions = G_ACTION_GROUP (window->priv->muxer);
 407
 408   gtk_accel_map_foreach (&data, add_accel_closure);
 409 }
 410
 411 static void
 412 gtk_application_window_shell_shows_app_menu_changed (GObject    *object,
 413                                                      GParamSpec *pspec,
 414                                                      gpointer    user_data)
 415 {
 416   GtkApplicationWindow *window = user_data;
 417
 418   gtk_application_window_update_shell_shows_app_menu (window, GTK_SETTINGS (object));
 419   gtk_application_window_update_menubar (window);
 420 }
 421
 422 static void
 423 gtk_application_window_shell_shows_menubar_changed (GObject    *object,
 424                                                     GParamSpec *pspec,
 425                                                     gpointer    user_data)
 426 {
 427   GtkApplicationWindow *window = user_data;
 428
 429   gtk_application_window_update_shell_shows_menubar (window, GTK_SETTINGS (object));
 430   gtk_application_window_update_menubar (window);
 431 }
 432
 433 static gchar **
 434 gtk_application_window_list_actions (GActionGroup *group)
 435 {
 436   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 437
 438   return g_action_group_list_actions (G_ACTION_GROUP (window->priv->actions));
 439 }
 440
 441 static gboolean
 442 gtk_application_window_query_action (GActionGroup        *group,
 443                                      const gchar         *action_name,
 444                                      gboolean            *enabled,
 445                                      const GVariantType **parameter_type,
 446                                      const GVariantType **state_type,
 447                                      GVariant           **state_hint,
 448                                      GVariant           **state)
 449 {
 450   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 451
 452   return g_action_group_query_action (G_ACTION_GROUP (window->priv->actions),
 453                                       action_name, enabled, parameter_type, state_type, state_hint, state);
 454 }
 455
 456 static void
 457 gtk_application_window_activate_action (GActionGroup *group,
 458                                         const gchar  *action_name,
 459                                         GVariant     *parameter)
 460 {
 461   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 462
 463   return g_action_group_activate_action (G_ACTION_GROUP (window->priv->actions), action_name, parameter);
 464 }
 465
 466 static void
 467 gtk_application_window_change_action_state (GActionGroup *group,
 468                                             const gchar  *action_name,
 469                                             GVariant     *state)
 470 {
 471   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 472
 473   return g_action_group_change_action_state (G_ACTION_GROUP (window->priv->actions), action_name, state);
 474 }
 475
 476 static GAction *
 477 gtk_application_window_lookup_action (GActionMap  *action_map,
 478                                       const gchar *action_name)
 479 {
 480   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 481
 482   return g_action_map_lookup_action (G_ACTION_MAP (window->priv->actions), action_name);
 483 }
 484
 485 static void
 486 gtk_application_window_add_action (GActionMap *action_map,
 487                                    GAction    *action)
 488 {
 489   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 490
 491   g_action_map_add_action (G_ACTION_MAP (window->priv->actions), action);
 492 }
 493
 494 static void
 495 gtk_application_window_remove_action (GActionMap  *action_map,
 496                                       const gchar *action_name)
 497 {
 498   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 499
 500   g_action_map_remove_action (G_ACTION_MAP (window->priv->actions), action_name);
 501 }
 502
 503 static void
 504 gtk_application_window_group_iface_init (GActionGroupInterface *iface)
 505 {
 506   iface->list_actions = gtk_application_window_list_actions;
 507   iface->query_action = gtk_application_window_query_action;
 508   iface->activate_action = gtk_application_window_activate_action;
 509   iface->change_action_state = gtk_application_window_change_action_state;
 510 }
 511
 512 static void
 513 gtk_application_window_map_iface_init (GActionMapInterface *iface)
 514 {
 515   iface->lookup_action = gtk_application_window_lookup_action;
 516   iface->add_action = gtk_application_window_add_action;
 517   iface->remove_action = gtk_application_window_remove_action;
 518 }
 519
 520 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindow, gtk_application_window, GTK_TYPE_WINDOW,
 521                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP, gtk_application_window_group_iface_init)
 522                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_MAP, gtk_application_window_map_iface_init))
 523
 524 enum {
 525   PROP_0,
 526   PROP_SHOW_MENUBAR,
 527   N_PROPS
 528 };
 529 static GParamSpec *gtk_application_window_properties[N_PROPS];
 530
 531 static void
 532 gtk_application_window_real_get_preferred_height (GtkWidget *widget,
 533                                                   gint      *minimum_height,
 534                                                   gint      *natural_height)
 535 {
 536   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 537
 538   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 539     ->get_preferred_height (widget, minimum_height, natural_height);
 540
 541   if (window->priv->menubar != NULL)
 542     {
 543       gint menubar_min_height, menubar_nat_height;
 544
 545       gtk_widget_get_preferred_height (window->priv->menubar, &menubar_min_height, &menubar_nat_height);
 546       *minimum_height += menubar_min_height;
 547       *natural_height += menubar_nat_height;
 548     }
 549 }
 550
 551 static void
 552 gtk_application_window_real_get_preferred_height_for_width (GtkWidget *widget,
 553                                                             gint       width,
 554                                                             gint      *minimum_height,
 555                                                             gint      *natural_height)
 556 {
 557   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 558
 559   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 560     ->get_preferred_height_for_width (widget, width, minimum_height, natural_height);
 561
 562   if (window->priv->menubar != NULL)
 563     {
 564       gint menubar_min_height, menubar_nat_height;
 565
 566       gtk_widget_get_preferred_height_for_width (window->priv->menubar, width, &menubar_min_height, &menubar_nat_height);
 567       *minimum_height += menubar_min_height;
 568       *natural_height += menubar_nat_height;
 569     }
 570 }
 571
 572 static void
 573 gtk_application_window_real_get_preferred_width (GtkWidget *widget,
 574                                                  gint      *minimum_width,
 575                                                  gint      *natural_width)
 576 {
 577   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 578
 579   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 580     ->get_preferred_width (widget, minimum_width, natural_width);
 581
 582   if (window->priv->menubar != NULL)
 583     {
 584       gint menubar_min_width, menubar_nat_width;
 585
 586       gtk_widget_get_preferred_width (window->priv->menubar, &menubar_min_width, &menubar_nat_width);
 587       *minimum_width = MAX (*minimum_width, menubar_min_width);
 588       *natural_width = MAX (*natural_width, menubar_nat_width);
 589     }
 590 }
 591
 592 static void
 593 gtk_application_window_real_get_preferred_width_for_height (GtkWidget *widget,
 594                                                             gint       height,
 595                                                             gint      *minimum_width,
 596                                                             gint      *natural_width)
 597 {
 598   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 599
 600   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 601     ->get_preferred_width_for_height (widget, height, minimum_width, natural_width);
 602
 603   if (window->priv->menubar != NULL)
 604     {
 605       gint menubar_min_width, menubar_nat_width;
 606
 607       gtk_widget_get_preferred_width_for_height (window->priv->menubar, height, &menubar_min_width, &menubar_nat_width);
 608       *minimum_width = MAX (*minimum_width, menubar_min_width);
 609       *natural_width = MAX (*natural_width, menubar_nat_width);
 610     }
 611 }
 612
 613 static void
 614 gtk_application_window_real_size_allocate (GtkWidget     *widget,
 615                                            GtkAllocation *allocation)
 616 {
 617   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 618
 619   if (window->priv->menubar != NULL)
 620     {
 621       GtkAllocation menubar_allocation = *allocation;
 622       gint menubar_min_height, menubar_nat_height;
 623       GtkWidget *child;
 624
 625       gtk_widget_get_preferred_height_for_width (window->priv->menubar, allocation->width, &menubar_min_height, &menubar_nat_height);
 626
 627       menubar_allocation.height = menubar_min_height;
 628       gtk_widget_size_allocate (window->priv->menubar, &menubar_allocation);
 629
 630       child = gtk_bin_get_child (GTK_BIN (window));
 631       if (child != NULL && gtk_widget_get_visible (child))
 632         {
 633           GtkAllocation child_allocation = *allocation;
 634           gint border_width;
 635
 636           child_allocation.height = MAX (1, child_allocation.height - menubar_min_height);
 637
 638           border_width = gtk_container_get_border_width (GTK_CONTAINER (window));
 639           child_allocation.x += border_width;
 640           child_allocation.y += border_width + menubar_min_height;
 641           child_allocation.width -= border_width * 2;
 642           child_allocation.height -= border_width * 2 - menubar_min_height;
 643           gtk_widget_size_allocate (child, &child_allocation);
 644         }
 645
 646       gtk_widget_set_allocation (widget, allocation);
 647     }
 648   else
 649     GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 650       ->size_allocate (widget, allocation);
 651 }
 652
 653 static void
 654 gtk_application_window_real_realize (GtkWidget *widget)
 655 {
 656   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 657   GtkApplication *application;
 658   GtkSettings *settings;
 659
 660   application = gtk_window_get_application (GTK_WINDOW (window));
 661   settings = gtk_widget_get_settings (widget);
 662
 663   g_signal_connect (settings, "notify::gtk-shell-shows-app-menu",
 664                     G_CALLBACK (gtk_application_window_shell_shows_app_menu_changed), window);
 665   g_signal_connect (settings, "notify::gtk-shell-shows-menubar",
 666                     G_CALLBACK (gtk_application_window_shell_shows_menubar_changed), window);
 667
 668   if (window->priv->muxer == NULL)
 669     {
 670       GActionMuxer *muxer;
 671
 672       muxer = g_action_muxer_new ();
 673       g_action_muxer_insert (muxer, "app", G_ACTION_GROUP (application));
 674       g_action_muxer_insert (muxer, "win", G_ACTION_GROUP (window));
 675       window->priv->muxer = G_ACTION_OBSERVABLE (muxer);
 676     }
 677
 678   gtk_application_window_update_shell_shows_app_menu (window, settings);
 679   gtk_application_window_update_shell_shows_menubar (window, settings);
 680   gtk_application_window_update_menubar (window);
 681   gtk_application_window_update_accels (window);
 682
 683   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 684     ->realize (widget);
 685
 686 #ifdef GDK_WINDOWING_X11
 687   {
 688     GdkWindow *gdkwindow;
 689
 690     gdkwindow = gtk_widget_get_window (GTK_WIDGET (window));
 691
 692     if (GDK_IS_X11_WINDOW (gdkwindow))
 693       {
 694         const gchar *unique_id;
 695         const gchar *app_id;
 696
 697         gdk_x11_window_set_utf8_property (gdkwindow, "_DBUS_OBJECT_PATH", window->priv->object_path);
 698
 699         unique_id = g_dbus_connection_get_unique_name (window->priv->session);
 700         gdk_x11_window_set_utf8_property (gdkwindow, "_DBUS_UNIQUE_NAME", unique_id);
 701
 702         app_id = g_application_get_application_id (G_APPLICATION (application));
 703         gdk_x11_window_set_utf8_property (gdkwindow, "_DBUS_APPLICATION_ID", app_id);
 704       }
 705   }
 706 #endif
 707 }
 708
 709 static void
 710 gtk_application_window_real_unrealize (GtkWidget *widget)
 711 {
 712   GtkSettings *settings;
 713
 714   settings = gtk_widget_get_settings (widget);
 715
 716   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_app_menu_changed, widget);
 717   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_menubar_changed, widget);
 718
 719   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 720     ->unrealize (widget);
 721 }
 722
 723 gboolean
 724 gtk_application_window_publish (GtkApplicationWindow *window,
 725                                 GDBusConnection      *session,
 726                                 const gchar          *object_path)
 727 {
 728   g_assert (window->priv->session == NULL);
 729   g_assert (window->priv->export_id == 0);
 730   g_assert (window->priv->object_path == NULL);
 731
 732   window->priv->export_id = g_dbus_connection_export_action_group (session, object_path,
 733                                                                    G_ACTION_GROUP (window->priv->actions),
 734                                                                    NULL);
 735
 736   if (window->priv->export_id == 0)
 737     return FALSE;
 738
 739   window->priv->session = session;
 740   window->priv->object_path = g_strdup (object_path);
 741
 742   return TRUE;
 743 }
 744
 745 void
 746 gtk_application_window_unpublish (GtkApplicationWindow *window)
 747 {
 748   g_assert (window->priv->session != NULL);
 749   g_assert (window->priv->export_id != 0);
 750   g_assert (window->priv->object_path != NULL);
 751
 752   g_dbus_connection_unexport_action_group (window->priv->session, window->priv->export_id);
 753   window->priv->session = NULL;
 754   window->priv->export_id = 0;
 755
 756   g_free (window->priv->object_path);
 757   window->priv->object_path = NULL;
 758 }
 759
 760 static void
 761 gtk_application_window_real_map (GtkWidget *widget)
 762 {
 763   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 764
 765   /* XXX could eliminate this by tweaking gtk_window_map */
 766   if (window->priv->menubar)
 767     gtk_widget_map (window->priv->menubar);
 768
 769   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 770     ->map (widget);
 771 }
 772
 773 static void
 774 gtk_application_window_real_forall_internal (GtkContainer *container,
 775                                              gboolean      include_internal,
 776                                              GtkCallback   callback,
 777                                              gpointer      user_data)
 778 {
 779   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (container);
 780
 781   if (window->priv->menubar)
 782     callback (window->priv->menubar, user_data);
 783
 784   GTK_CONTAINER_CLASS (gtk_application_window_parent_class)
 785     ->forall (container, include_internal, callback, user_data);
 786 }
 787
 788
 789 static void
 790 gtk_application_window_get_property (GObject    *object,
 791                                      guint       prop_id,
 792                                      GValue     *value,
 793                                      GParamSpec *pspec)
 794 {
 795   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 796
 797   switch (prop_id)
 798     {
 799     case PROP_SHOW_MENUBAR:
 800       g_value_set_boolean (value, window->priv->show_menubar);
 801       break;
 802
 803     default:
 804       g_assert_not_reached ();
 805     }
 806 }
 807
 808 static void
 809 gtk_application_window_set_property (GObject      *object,
 810                                      guint         prop_id,
 811                                      const GValue *value,
 812                                      GParamSpec   *pspec)
 813 {
 814   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 815
 816   switch (prop_id)
 817     {
 818     case PROP_SHOW_MENUBAR:
 819       gtk_application_window_set_show_menubar (window, g_value_get_boolean (value));
 820       break;
 821
 822     default:
 823       g_assert_not_reached ();
 824     }
 825 }
 826
 827 static void
 828 gtk_application_window_dispose (GObject *object)
 829 {
 830   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 831
 832   if (window->priv->menubar)
 833     {
 834       gtk_widget_unparent (window->priv->menubar);
 835       window->priv->menubar = NULL;
 836     }
 837
 838   free_accel_closures (window);
 839
 840   g_clear_object (&window->priv->app_menu_section);
 841   g_clear_object (&window->priv->menubar_section);
 842   g_clear_object (&window->priv->actions);
 843   g_clear_object (&window->priv->accels);
 844   g_clear_object (&window->priv->muxer);
 845
 846   G_OBJECT_CLASS (gtk_application_window_parent_class)
 847     ->dispose (object);
 848 }
 849
 850 static void
 851 gtk_application_window_init (GtkApplicationWindow *window)
 852 {
 853   window->priv = G_TYPE_INSTANCE_GET_PRIVATE (window, GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindowPrivate);
 854
 855   window->priv->actions = gtk_application_window_actions_new (window);
 856   window->priv->app_menu_section = g_menu_new ();
 857   window->priv->menubar_section = g_menu_new ();
 858   window->priv->accels = gtk_accel_group_new ();
 859   gtk_window_add_accel_group (GTK_WINDOW (window), window->priv->accels);
 860
 861   /* window->priv->actions is the one and only ref on the group, so when
 862    * we dispose, the action group will die, disconnecting all signals.
 863    */
 864   g_signal_connect_swapped (window->priv->actions, "action-added",
 865                             G_CALLBACK (g_action_group_action_added), window);
 866   g_signal_connect_swapped (window->priv->actions, "action-enabled-changed",
 867                             G_CALLBACK (g_action_group_action_enabled_changed), window);
 868   g_signal_connect_swapped (window->priv->actions, "action-state-changed",
 869                             G_CALLBACK (g_action_group_action_state_changed), window);
 870   g_signal_connect_swapped (window->priv->actions, "action-removed",
 871                             G_CALLBACK (g_action_group_action_removed), window);
 872 }
 873
 874 static void
 875 gtk_application_window_class_init (GtkApplicationWindowClass *class)
 876 {
 877   GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
 878   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 879   GObjectClass *object_class = G_OBJECT_CLASS (class);
 880
 881   container_class->forall = gtk_application_window_real_forall_internal;
 882   widget_class->get_preferred_height = gtk_application_window_real_get_preferred_height;
 883   widget_class->get_preferred_height_for_width = gtk_application_window_real_get_preferred_height_for_width;
 884   widget_class->get_preferred_width = gtk_application_window_real_get_preferred_width;
 885   widget_class->get_preferred_width_for_height = gtk_application_window_real_get_preferred_width_for_height;
 886   widget_class->size_allocate = gtk_application_window_real_size_allocate;
 887   widget_class->realize = gtk_application_window_real_realize;
 888   widget_class->unrealize = gtk_application_window_real_unrealize;
 889   widget_class->map = gtk_application_window_real_map;
 890   object_class->get_property = gtk_application_window_get_property;
 891   object_class->set_property = gtk_application_window_set_property;
 892   object_class->dispose = gtk_application_window_dispose;
 893
 894   /**
 895    * GtkApplicationWindow:show-menubar:
 896    *
 897    * If this property is %TRUE, the window will display a menubar
 898    * that includes the app menu and menubar, unless these are
 899    * shown by the desktop shell. See g_application_set_app_menu()
 900    * and g_application_set_menubar().
 901    *
 902    * If %FALSE, the window will not display a menubar, regardless
 903    * of whether the desktop shell is showing the menus or not.
 904    */
 905   gtk_application_window_properties[PROP_SHOW_MENUBAR] =
 906     g_param_spec_boolean ("show-menubar",
 907                           P_("Show a menubar"),
 908                           P_("TRUE if the window should show a "
 909                              "menubar at the top of the window"),
 910                           TRUE, G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
 911   g_object_class_install_properties (object_class, N_PROPS, gtk_application_window_properties);
 912   g_type_class_add_private (class, sizeof (GtkApplicationWindowPrivate));
 913 }
 914
 915 /**
 916  * gtk_application_window_new:
 917  * @application: a #GtkApplication
 918  *
 919  * Creates a new #GtkApplicationWindow.
 920  *
 921  * Returns: a newly created #GtkApplicationWindow
 922  *
 923  * Since: 3.4
 924  */
 925 GtkWidget *
 926 gtk_application_window_new (GtkApplication *application)
 927 {
 928   g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
 929
 930   return g_object_new (GTK_TYPE_APPLICATION_WINDOW,
 931                        "application", application,
 932                        NULL);
 933 }
 934
 935 /**
 936  * gtk_application_window_get_show_menubar:
 937  * @window: a #GtkApplicationWindow
 938  *
 939  * Returns whether the window will display a menubar for the app menu
 940  * and menubar as needed.
 941  *
 942  * Returns: %TRUE if @window will display a menubar when needed
 943  *
 944  * Since: 3.4
 945  */
 946 gboolean
 947 gtk_application_window_get_show_menubar (GtkApplicationWindow *window)
 948 {
 949   return window->priv->show_menubar;
 950 }
 951
 952 /**
 953  * gtk_application_window_set_show_menubar:
 954  * @window: a #GtkApplicationWindow
 955  * @show_menubar: whether to show a menubar when needed
 956  *
 957  * Sets whether the window will display a menubar for the app menu
 958  * and menubar as needed.
 959  *
 960  * Since: 3.4
 961  */
 962 void
 963 gtk_application_window_set_show_menubar (GtkApplicationWindow *window,
 964                                          gboolean              show_menubar)
 965 {
 966   g_return_if_fail (GTK_IS_APPLICATION_WINDOW (window));
 967
 968   show_menubar = !!show_menubar;
 969
 970   if (window->priv->show_menubar != show_menubar)
 971     {
 972       window->priv->show_menubar = show_menubar;
 973
 974       gtk_application_window_update_menubar (window);
 975
 976       g_object_notify_by_pspec (G_OBJECT (window), gtk_application_window_properties[PROP_SHOW_MENUBAR]);
 977     }
 978 }