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 "gtkwindowprivate.h"
  28 #include "gtkmodelmenu.h"
  29 #include "gactionmuxer.h"
  30 #include "gtkaccelgroup.h"
  31 #include "gtkaccelmap.h"
  32 #include "gtkintl.h"
  33
  34 #include <gdk/gdk.h>
  35 #ifdef GDK_WINDOWING_X11
  36 #include <gdk/x11/gdkx.h>
  37 #endif
  38
  39 /**
  40  * SECTION:gtkapplicationwindow
  41  * @title: GtkApplicationWindow
  42  * @short_description: GtkWindow subclass with GtkApplication support
  43  *
  44  * GtkApplicationWindow is a #GtkWindow subclass that offers some
  45  * extra functionality for better integration with #GtkApplication
  46  * features.  Notably, it can handle both the application menu as well
  47  * as the menubar. See gtk_application_set_app_menu() and
  48  * gtk_application_set_menubar().
  49  *
  50  * This class implements the #GActionGroup and #GActionMap interfaces,
  51  * to let you add window-specific actions that will be exported by the
  52  * associated #GtkApplication, together with its application-wide
  53  * actions.  Window-specific actions are prefixed with the "win."
  54  * prefix and application-wide actions are prefixed with the "app."
  55  * prefix.  Actions must be addressed with the prefixed name when
  56  * referring to them from a #GMenuModel.
  57  *
  58  * As with #GtkApplication, the GDK lock will be acquired when
  59  * processing actions arriving from other processes and should therefore
  60  * be held when activating actions locally (if GDK threads are enabled).
  61  *
  62  * The settings #GtkSettings:gtk-shell-shows-app-menu and
  63  * #GtkSettings:gtk-shell-shows-menubar tell GTK+ whether the
  64  * desktop environment is showing the application menu and menubar
  65  * models outside the application as part of the desktop shell.
  66  * For instance, on OS X, both menus will be displayed remotely;
  67  * on Windows neither will be. gnome-shell (starting with version 3.4)
  68  * will display the application menu, but not the menubar.
  69  *
  70  * If the desktop environment does not display the menubar, then
  71  * #GApplicationWindow will automatically show a #GtkMenubar for it.
  72  * (see the #GtkApplication docs for some screenshots of how this
  73  * looks on different platforms).
  74  * This behaviour can be overridden with the #GtkApplicationWindow:show-menubar
  75  * property. If the desktop environment does not display the application
  76  * menu, then it will automatically be included in the menubar.
  77  *
  78  * <example><title>A GtkApplicationWindow with a menubar</title>
  79  * <programlisting><![CDATA[
  80  * app = gtk_application_new ();
  81  *
  82  * builder = gtk_builder_new ();
  83  * gtk_builder_add_from_string (builder,
  84  *     "<interface>"
  85  *     "  <menu id='menubar'>"
  86  *     "    <submenu label='_Edit'>"
  87  *     "      <item label='_Copy' action='win.copy'/>"
  88  *     "      <item label='_Paste' action='win.paste'/>"
  89  *     "    </submenu>"
  90  *     "  </menu>"
  91  *     "</interface>");
  92  * gtk_application_set_menubar (G_APPLICATION (app),
  93  *                              G_MENU_MODEL (gtk_builder_get_object (builder, "menubar")));
  94  * g_object_unref (builder);
  95  *
  96  * ...
  97  *
  98  * window = gtk_application_window_new (app);
  99  * ]]>
 100  * </programlisting>
 101  * </example>
 102  */
 103
 104 typedef GSimpleActionGroupClass GtkApplicationWindowActionsClass;
 105 typedef struct
 106 {
 107   GSimpleActionGroup parent_instance;
 108   GtkWindow *window;
 109 } GtkApplicationWindowActions;
 110
 111 static GType gtk_application_window_actions_get_type   (void);
 112 static void  gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface);
 113 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindowActions, gtk_application_window_actions, G_TYPE_SIMPLE_ACTION_GROUP,
 114                          G_IMPLEMENT_INTERFACE (G_TYPE_REMOTE_ACTION_GROUP, gtk_application_window_actions_iface_init))
 115
 116 static void
 117 gtk_application_window_actions_activate_action_full (GRemoteActionGroup *remote,
 118                                                      const gchar        *action_name,
 119                                                      GVariant           *parameter,
 120                                                      GVariant           *platform_data)
 121 {
 122   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 123   GApplication *application;
 124   GApplicationClass *class;
 125
 126   application = G_APPLICATION (gtk_window_get_application (actions->window));
 127   class = G_APPLICATION_GET_CLASS (application);
 128
 129   class->before_emit (application, platform_data);
 130   g_action_group_activate_action (G_ACTION_GROUP (actions), action_name, parameter);
 131   class->after_emit (application, platform_data);
 132 }
 133
 134 static void
 135 gtk_application_window_actions_change_action_state_full (GRemoteActionGroup *remote,
 136                                                          const gchar        *action_name,
 137                                                          GVariant           *value,
 138                                                          GVariant           *platform_data)
 139 {
 140   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 141   GApplication *application;
 142   GApplicationClass *class;
 143
 144   application = G_APPLICATION (gtk_window_get_application (actions->window));
 145   class = G_APPLICATION_GET_CLASS (application);
 146
 147   class->before_emit (application, platform_data);
 148   g_action_group_change_action_state (G_ACTION_GROUP (actions), action_name, value);
 149   class->after_emit (application, platform_data);
 150 }
 151
 152 static void
 153 gtk_application_window_actions_init (GtkApplicationWindowActions *actions)
 154 {
 155 }
 156
 157 static void
 158 gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface)
 159 {
 160   iface->activate_action_full = gtk_application_window_actions_activate_action_full;
 161   iface->change_action_state_full = gtk_application_window_actions_change_action_state_full;
 162 }
 163
 164 static void
 165 gtk_application_window_actions_class_init (GtkApplicationWindowActionsClass *class)
 166 {
 167 }
 168
 169 static GSimpleActionGroup *
 170 gtk_application_window_actions_new (GtkApplicationWindow *window)
 171 {
 172   GtkApplicationWindowActions *actions;
 173
 174   actions = g_object_new (gtk_application_window_actions_get_type (), NULL);
 175   actions->window = GTK_WINDOW (window);
 176
 177   return G_SIMPLE_ACTION_GROUP (actions);
 178 }
 179
 180 /* Now onto GtkApplicationWindow... */
 181
 182 struct _GtkApplicationWindowPrivate
 183 {
 184   GSimpleActionGroup *actions;
 185   GActionObservable *muxer;
 186   gboolean muxer_initialised;
 187   GtkWidget *menubar;
 188   GtkAccelGroup *accels;
 189   GSList *accel_closures;
 190
 191   GMenu *app_menu_section;
 192   GMenu *menubar_section;
 193   gboolean show_menubar;
 194
 195   GDBusConnection *session;
 196   gchar           *object_path;
 197   guint            export_id;
 198 };
 199
 200 static void
 201 gtk_application_window_update_menubar (GtkApplicationWindow *window)
 202 {
 203   gboolean should_have_menubar;
 204   gboolean have_menubar;
 205
 206   have_menubar = window->priv->menubar != NULL;
 207
 208   should_have_menubar = window->priv->show_menubar &&
 209                         (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) ||
 210                          g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)));
 211
 212   if (have_menubar && !should_have_menubar)
 213     {
 214       gtk_widget_unparent (window->priv->menubar);
 215       window->priv->menubar = NULL;
 216
 217       gtk_widget_queue_resize (GTK_WIDGET (window));
 218     }
 219
 220   if (!have_menubar && should_have_menubar)
 221     {
 222       GMenu *combined;
 223
 224       combined = g_menu_new ();
 225       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->app_menu_section));
 226       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->menubar_section));
 227
 228       window->priv->menubar = gtk_model_menu_create_menu_bar (G_MENU_MODEL (combined), window->priv->muxer, window->priv->accels);
 229       gtk_widget_set_parent (window->priv->menubar, GTK_WIDGET (window));
 230       gtk_widget_show_all (window->priv->menubar);
 231       g_object_unref (combined);
 232
 233       gtk_widget_queue_resize (GTK_WIDGET (window));
 234     }
 235 }
 236
 237 static void
 238 gtk_application_window_update_shell_shows_app_menu (GtkApplicationWindow *window,
 239                                                     GtkSettings          *settings)
 240 {
 241   gboolean shown_by_shell;
 242
 243   g_object_get (settings, "gtk-shell-shows-app-menu", &shown_by_shell, NULL);
 244
 245   if (shown_by_shell)
 246     {
 247       /* the shell shows it, so don't show it locally */
 248       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) != 0)
 249         g_menu_remove (window->priv->app_menu_section, 0);
 250     }
 251   else
 252     {
 253       /* the shell does not show it, so make sure we show it */
 254       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) == 0)
 255         {
 256           GMenuModel *app_menu;
 257
 258           app_menu = gtk_application_get_app_menu (gtk_window_get_application (GTK_WINDOW (window)));
 259
 260           if (app_menu != NULL)
 261             {
 262               const gchar *name;
 263
 264               name = g_get_application_name ();
 265               if (name == g_get_prgname ())
 266                 name = _("Application");
 267               g_menu_append_submenu (window->priv->app_menu_section, name, app_menu);
 268             }
 269         }
 270     }
 271 }
 272
 273 static void
 274 gtk_application_window_update_shell_shows_menubar (GtkApplicationWindow *window,
 275                                                    GtkSettings          *settings)
 276 {
 277   gboolean shown_by_shell;
 278
 279   g_object_get (settings, "gtk-shell-shows-menubar", &shown_by_shell, NULL);
 280
 281   if (shown_by_shell)
 282     {
 283       /* the shell shows it, so don't show it locally */
 284       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) != 0)
 285         g_menu_remove (window->priv->menubar_section, 0);
 286     }
 287   else
 288     {
 289       /* the shell does not show it, so make sure we show it */
 290       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) == 0)
 291         {
 292           GMenuModel *menubar;
 293
 294           menubar = gtk_application_get_menubar (gtk_window_get_application (GTK_WINDOW (window)));
 295
 296           if (menubar != NULL)
 297             g_menu_append_section (window->priv->menubar_section, NULL, menubar);
 298         }
 299     }
 300 }
 301
 302 typedef struct {
 303   GClosure closure;
 304   gchar *action_name;
 305   GVariant *parameter;
 306 } AccelClosure;
 307
 308 static void
 309 accel_activate (GClosure     *closure,
 310                 GValue       *return_value,
 311                 guint         n_param_values,
 312                 const GValue *param_values,
 313                 gpointer      invocation_hint,
 314                 gpointer      marshal_data)
 315 {
 316   AccelClosure *aclosure = (AccelClosure*)closure;
 317   GActionGroup *actions;
 318
 319   actions = G_ACTION_GROUP (closure->data);
 320   if (g_action_group_get_action_enabled (actions, aclosure->action_name))
 321     {
 322        g_action_group_activate_action (actions, aclosure->action_name, aclosure->parameter);
 323
 324       /* we handled the accelerator */
 325       g_value_set_boolean (return_value, TRUE);
 326     }
 327 }
 328
 329 static void
 330 free_accel_closures (GtkApplicationWindow *window)
 331 {
 332   GSList *l;
 333
 334   for (l = window->priv->accel_closures; l; l = l->next)
 335     {
 336        AccelClosure *closure = l->data;
 337
 338        gtk_accel_group_disconnect (window->priv->accels, &closure->closure);
 339
 340        g_object_unref (closure->closure.data);
 341        if (closure->parameter)
 342          g_variant_unref (closure->parameter);
 343        g_free (closure->action_name);
 344        g_closure_invalidate (&closure->closure);
 345        g_closure_unref (&closure->closure);
 346     }
 347   g_slist_free (window->priv->accel_closures);
 348   window->priv->accel_closures = NULL;
 349 }
 350
 351 typedef struct {
 352   GtkApplicationWindow *window;
 353   GActionGroup *actions;
 354 } AccelData;
 355
 356 /* Hack. We iterate over the accel map instead of the actions,
 357  * in order to pull the parameters out of accel map entries
 358  */
 359 static void
 360 add_accel_closure (gpointer         data,
 361                    const gchar     *accel_path,
 362                    guint            accel_key,
 363                    GdkModifierType  accel_mods,
 364                    gboolean         changed)
 365 {
 366   AccelData *d = data;
 367   GtkApplicationWindow *window = d->window;
 368   GActionGroup *actions = d->actions;
 369   const gchar *path;
 370   const gchar *p;
 371   gchar *action_name;
 372   GVariant *parameter;
 373   AccelClosure *closure;
 374
 375   if (accel_key == 0)
 376     return;
 377
 378   if (!g_str_has_prefix (accel_path, "<Actions>/"))
 379     return;
 380
 381   path = accel_path + strlen ("<Actions>/");
 382   p = strchr (path, '/');
 383   if (p)
 384     {
 385       action_name = g_strndup (path, p - path);
 386       parameter = g_variant_parse (NULL, p + 1, NULL, NULL, NULL);
 387       if (!parameter)
 388         g_warning ("Failed to parse parameter from '%s'\n", accel_path);
 389     }
 390   else
 391     {
 392       action_name = g_strdup (path);
 393       parameter = NULL;
 394     }
 395
 396   if (g_action_group_has_action (actions, action_name))
 397     {
 398       closure = (AccelClosure*) g_closure_new_object (sizeof (AccelClosure), g_object_ref (actions));
 399       g_closure_set_marshal (&closure->closure, accel_activate);
 400
 401       closure->action_name = g_strdup (action_name);
 402       closure->parameter = parameter ? g_variant_ref_sink (parameter) : NULL;
 403
 404       window->priv->accel_closures = g_slist_prepend (window->priv->accel_closures, g_closure_ref (&closure->closure));
 405       g_closure_sink (&closure->closure);
 406
 407       gtk_accel_group_connect_by_path (window->priv->accels, accel_path, &closure->closure);
 408     }
 409
 410   g_free (action_name);
 411 }
 412
 413 static void
 414 gtk_application_window_update_accels (GtkApplicationWindow *window)
 415 {
 416   AccelData data;
 417
 418   free_accel_closures (window);
 419
 420   data.window = window;
 421   data.actions = G_ACTION_GROUP (window->priv->muxer);
 422
 423   gtk_accel_map_foreach (&data, add_accel_closure);
 424 }
 425
 426 static void
 427 gtk_application_window_shell_shows_app_menu_changed (GObject    *object,
 428                                                      GParamSpec *pspec,
 429                                                      gpointer    user_data)
 430 {
 431   GtkApplicationWindow *window = user_data;
 432
 433   gtk_application_window_update_shell_shows_app_menu (window, GTK_SETTINGS (object));
 434   gtk_application_window_update_menubar (window);
 435 }
 436
 437 static void
 438 gtk_application_window_shell_shows_menubar_changed (GObject    *object,
 439                                                     GParamSpec *pspec,
 440                                                     gpointer    user_data)
 441 {
 442   GtkApplicationWindow *window = user_data;
 443
 444   gtk_application_window_update_shell_shows_menubar (window, GTK_SETTINGS (object));
 445   gtk_application_window_update_menubar (window);
 446 }
 447
 448 static gchar **
 449 gtk_application_window_list_actions (GActionGroup *group)
 450 {
 451   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 452
 453   return g_action_group_list_actions (G_ACTION_GROUP (window->priv->actions));
 454 }
 455
 456 static gboolean
 457 gtk_application_window_query_action (GActionGroup        *group,
 458                                      const gchar         *action_name,
 459                                      gboolean            *enabled,
 460                                      const GVariantType **parameter_type,
 461                                      const GVariantType **state_type,
 462                                      GVariant           **state_hint,
 463                                      GVariant           **state)
 464 {
 465   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 466
 467   return g_action_group_query_action (G_ACTION_GROUP (window->priv->actions),
 468                                       action_name, enabled, parameter_type, state_type, state_hint, state);
 469 }
 470
 471 static void
 472 gtk_application_window_activate_action (GActionGroup *group,
 473                                         const gchar  *action_name,
 474                                         GVariant     *parameter)
 475 {
 476   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 477
 478   return g_action_group_activate_action (G_ACTION_GROUP (window->priv->actions), action_name, parameter);
 479 }
 480
 481 static void
 482 gtk_application_window_change_action_state (GActionGroup *group,
 483                                             const gchar  *action_name,
 484                                             GVariant     *state)
 485 {
 486   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 487
 488   return g_action_group_change_action_state (G_ACTION_GROUP (window->priv->actions), action_name, state);
 489 }
 490
 491 static GAction *
 492 gtk_application_window_lookup_action (GActionMap  *action_map,
 493                                       const gchar *action_name)
 494 {
 495   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 496
 497   return g_action_map_lookup_action (G_ACTION_MAP (window->priv->actions), action_name);
 498 }
 499
 500 static void
 501 gtk_application_window_add_action (GActionMap *action_map,
 502                                    GAction    *action)
 503 {
 504   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 505
 506   g_action_map_add_action (G_ACTION_MAP (window->priv->actions), action);
 507 }
 508
 509 static void
 510 gtk_application_window_remove_action (GActionMap  *action_map,
 511                                       const gchar *action_name)
 512 {
 513   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 514
 515   g_action_map_remove_action (G_ACTION_MAP (window->priv->actions), action_name);
 516 }
 517
 518 static void
 519 gtk_application_window_group_iface_init (GActionGroupInterface *iface)
 520 {
 521   iface->list_actions = gtk_application_window_list_actions;
 522   iface->query_action = gtk_application_window_query_action;
 523   iface->activate_action = gtk_application_window_activate_action;
 524   iface->change_action_state = gtk_application_window_change_action_state;
 525 }
 526
 527 static void
 528 gtk_application_window_map_iface_init (GActionMapInterface *iface)
 529 {
 530   iface->lookup_action = gtk_application_window_lookup_action;
 531   iface->add_action = gtk_application_window_add_action;
 532   iface->remove_action = gtk_application_window_remove_action;
 533 }
 534
 535 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindow, gtk_application_window, GTK_TYPE_WINDOW,
 536                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP, gtk_application_window_group_iface_init)
 537                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_MAP, gtk_application_window_map_iface_init))
 538
 539 enum {
 540   PROP_0,
 541   PROP_SHOW_MENUBAR,
 542   N_PROPS
 543 };
 544 static GParamSpec *gtk_application_window_properties[N_PROPS];
 545
 546 static void
 547 gtk_application_window_real_get_preferred_height (GtkWidget *widget,
 548                                                   gint      *minimum_height,
 549                                                   gint      *natural_height)
 550 {
 551   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 552
 553   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 554     ->get_preferred_height (widget, minimum_height, natural_height);
 555
 556   if (window->priv->menubar != NULL)
 557     {
 558       gint menubar_min_height, menubar_nat_height;
 559
 560       gtk_widget_get_preferred_height (window->priv->menubar, &menubar_min_height, &menubar_nat_height);
 561       *minimum_height += menubar_min_height;
 562       *natural_height += menubar_nat_height;
 563     }
 564 }
 565
 566 static void
 567 gtk_application_window_real_get_preferred_height_for_width (GtkWidget *widget,
 568                                                             gint       width,
 569                                                             gint      *minimum_height,
 570                                                             gint      *natural_height)
 571 {
 572   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 573
 574   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 575     ->get_preferred_height_for_width (widget, width, minimum_height, natural_height);
 576
 577   if (window->priv->menubar != NULL)
 578     {
 579       gint menubar_min_height, menubar_nat_height;
 580
 581       gtk_widget_get_preferred_height_for_width (window->priv->menubar, width, &menubar_min_height, &menubar_nat_height);
 582       *minimum_height += menubar_min_height;
 583       *natural_height += menubar_nat_height;
 584     }
 585 }
 586
 587 static void
 588 gtk_application_window_real_get_preferred_width (GtkWidget *widget,
 589                                                  gint      *minimum_width,
 590                                                  gint      *natural_width)
 591 {
 592   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 593
 594   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 595     ->get_preferred_width (widget, minimum_width, natural_width);
 596
 597   if (window->priv->menubar != NULL)
 598     {
 599       gint menubar_min_width, menubar_nat_width;
 600
 601       gtk_widget_get_preferred_width (window->priv->menubar, &menubar_min_width, &menubar_nat_width);
 602       *minimum_width = MAX (*minimum_width, menubar_min_width);
 603       *natural_width = MAX (*natural_width, menubar_nat_width);
 604     }
 605 }
 606
 607 static void
 608 gtk_application_window_real_get_preferred_width_for_height (GtkWidget *widget,
 609                                                             gint       height,
 610                                                             gint      *minimum_width,
 611                                                             gint      *natural_width)
 612 {
 613   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 614   gint menubar_height;
 615
 616   if (window->priv->menubar != NULL)
 617     gtk_widget_get_preferred_height (window->priv->menubar, &menubar_height, NULL);
 618   else
 619     menubar_height = 0;
 620
 621   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 622     ->get_preferred_width_for_height (widget, height - menubar_height, minimum_width, natural_width);
 623
 624   if (window->priv->menubar != NULL)
 625     {
 626       gint menubar_min_width, menubar_nat_width;
 627
 628       gtk_widget_get_preferred_width_for_height (window->priv->menubar, menubar_height, &menubar_min_width, &menubar_nat_width);
 629       *minimum_width = MAX (*minimum_width, menubar_min_width);
 630       *natural_width = MAX (*natural_width, menubar_nat_width);
 631     }
 632 }
 633
 634 static void
 635 gtk_application_window_real_size_allocate (GtkWidget     *widget,
 636                                            GtkAllocation *allocation)
 637 {
 638   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 639
 640   if (window->priv->menubar != NULL)
 641     {
 642       GtkAllocation menubar_allocation = *allocation;
 643       gint menubar_height;
 644       GtkWidget *child;
 645
 646       _gtk_window_set_allocation (GTK_WINDOW (widget), allocation);
 647
 648       gtk_widget_get_preferred_height_for_width (window->priv->menubar, allocation->width, &menubar_height, NULL);
 649
 650       menubar_allocation.height = menubar_height;
 651       gtk_widget_size_allocate (window->priv->menubar, &menubar_allocation);
 652
 653       child = gtk_bin_get_child (GTK_BIN (window));
 654       if (child != NULL && gtk_widget_get_visible (child))
 655         {
 656           GtkAllocation child_allocation = *allocation;
 657           gint border_width;
 658
 659           border_width = gtk_container_get_border_width (GTK_CONTAINER (window));
 660           child_allocation.x += border_width;
 661           child_allocation.y += border_width + menubar_height;
 662           child_allocation.width = MAX (1, child_allocation.width - border_width * 2);
 663           child_allocation.height = MAX (1, child_allocation.height - border_width * 2 - menubar_height);
 664
 665           gtk_widget_size_allocate (child, &child_allocation);
 666         }
 667     }
 668   else
 669     GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 670       ->size_allocate (widget, allocation);
 671 }
 672
 673 static void
 674 gtk_application_window_real_realize (GtkWidget *widget)
 675 {
 676   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 677   GtkApplication *application;
 678   GtkSettings *settings;
 679
 680   application = gtk_window_get_application (GTK_WINDOW (window));
 681   settings = gtk_widget_get_settings (widget);
 682
 683   g_signal_connect (settings, "notify::gtk-shell-shows-app-menu",
 684                     G_CALLBACK (gtk_application_window_shell_shows_app_menu_changed), window);
 685   g_signal_connect (settings, "notify::gtk-shell-shows-menubar",
 686                     G_CALLBACK (gtk_application_window_shell_shows_menubar_changed), window);
 687
 688   if (!window->priv->muxer_initialised)
 689     {
 690       g_action_muxer_insert (G_ACTION_MUXER (window->priv->muxer), "app", G_ACTION_GROUP (application));
 691       g_action_muxer_insert (G_ACTION_MUXER (window->priv->muxer), "win", G_ACTION_GROUP (window));
 692       window->priv->muxer_initialised = TRUE;
 693     }
 694
 695   gtk_application_window_update_shell_shows_app_menu (window, settings);
 696   gtk_application_window_update_shell_shows_menubar (window, settings);
 697   gtk_application_window_update_menubar (window);
 698   gtk_application_window_update_accels (window);
 699
 700   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 701     ->realize (widget);
 702
 703 #ifdef GDK_WINDOWING_X11
 704   {
 705     GdkWindow *gdkwindow;
 706
 707     gdkwindow = gtk_widget_get_window (GTK_WIDGET (window));
 708
 709     if (GDK_IS_X11_WINDOW (gdkwindow))
 710       {
 711         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_ID",
 712                                           g_application_get_application_id (G_APPLICATION (application)));
 713
 714         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_UNIQUE_BUS_NAME",
 715                                           g_dbus_connection_get_unique_name (window->priv->session));
 716
 717         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_OBJECT_PATH",
 718                                           gtk_application_get_dbus_object_path (application));
 719
 720         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_WINDOW_OBJECT_PATH",
 721                                           window->priv->object_path);
 722
 723         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APP_MENU_OBJECT_PATH",
 724                                           gtk_application_get_app_menu_object_path (application));
 725
 726         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_MENUBAR_OBJECT_PATH",
 727                                           gtk_application_get_menubar_object_path (application));
 728       }
 729   }
 730 #endif
 731 }
 732
 733 static void
 734 gtk_application_window_real_unrealize (GtkWidget *widget)
 735 {
 736   GtkSettings *settings;
 737
 738   settings = gtk_widget_get_settings (widget);
 739
 740   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_app_menu_changed, widget);
 741   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_menubar_changed, widget);
 742
 743   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 744     ->unrealize (widget);
 745 }
 746
 747 gboolean
 748 gtk_application_window_publish (GtkApplicationWindow *window,
 749                                 GDBusConnection      *session,
 750                                 const gchar          *object_path)
 751 {
 752   g_assert (window->priv->session == NULL);
 753   g_assert (window->priv->export_id == 0);
 754   g_assert (window->priv->object_path == NULL);
 755
 756   window->priv->export_id = g_dbus_connection_export_action_group (session, object_path,
 757                                                                    G_ACTION_GROUP (window->priv->actions),
 758                                                                    NULL);
 759
 760   if (window->priv->export_id == 0)
 761     return FALSE;
 762
 763   window->priv->session = session;
 764   window->priv->object_path = g_strdup (object_path);
 765
 766   return TRUE;
 767 }
 768
 769 void
 770 gtk_application_window_unpublish (GtkApplicationWindow *window)
 771 {
 772   g_assert (window->priv->session != NULL);
 773   g_assert (window->priv->export_id != 0);
 774   g_assert (window->priv->object_path != NULL);
 775
 776   g_dbus_connection_unexport_action_group (window->priv->session, window->priv->export_id);
 777   window->priv->session = NULL;
 778   window->priv->export_id = 0;
 779
 780   g_free (window->priv->object_path);
 781   window->priv->object_path = NULL;
 782 }
 783
 784 static void
 785 gtk_application_window_real_map (GtkWidget *widget)
 786 {
 787   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 788
 789   /* XXX could eliminate this by tweaking gtk_window_map */
 790   if (window->priv->menubar)
 791     gtk_widget_map (window->priv->menubar);
 792
 793   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 794     ->map (widget);
 795 }
 796
 797 static void
 798 gtk_application_window_real_forall_internal (GtkContainer *container,
 799                                              gboolean      include_internal,
 800                                              GtkCallback   callback,
 801                                              gpointer      user_data)
 802 {
 803   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (container);
 804
 805   if (window->priv->menubar)
 806     callback (window->priv->menubar, user_data);
 807
 808   GTK_CONTAINER_CLASS (gtk_application_window_parent_class)
 809     ->forall (container, include_internal, callback, user_data);
 810 }
 811
 812
 813 static void
 814 gtk_application_window_get_property (GObject    *object,
 815                                      guint       prop_id,
 816                                      GValue     *value,
 817                                      GParamSpec *pspec)
 818 {
 819   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 820
 821   switch (prop_id)
 822     {
 823     case PROP_SHOW_MENUBAR:
 824       g_value_set_boolean (value, window->priv->show_menubar);
 825       break;
 826
 827     default:
 828       g_assert_not_reached ();
 829     }
 830 }
 831
 832 static void
 833 gtk_application_window_set_property (GObject      *object,
 834                                      guint         prop_id,
 835                                      const GValue *value,
 836                                      GParamSpec   *pspec)
 837 {
 838   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 839
 840   switch (prop_id)
 841     {
 842     case PROP_SHOW_MENUBAR:
 843       gtk_application_window_set_show_menubar (window, g_value_get_boolean (value));
 844       break;
 845
 846     default:
 847       g_assert_not_reached ();
 848     }
 849 }
 850
 851 static void
 852 gtk_application_window_dispose (GObject *object)
 853 {
 854   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 855
 856   if (window->priv->menubar)
 857     {
 858       gtk_widget_unparent (window->priv->menubar);
 859       window->priv->menubar = NULL;
 860     }
 861
 862   free_accel_closures (window);
 863
 864   g_clear_object (&window->priv->app_menu_section);
 865   g_clear_object (&window->priv->menubar_section);
 866   g_clear_object (&window->priv->actions);
 867   g_clear_object (&window->priv->accels);
 868   g_clear_object (&window->priv->muxer);
 869
 870   G_OBJECT_CLASS (gtk_application_window_parent_class)
 871     ->dispose (object);
 872 }
 873
 874 static void
 875 gtk_application_window_init (GtkApplicationWindow *window)
 876 {
 877   window->priv = G_TYPE_INSTANCE_GET_PRIVATE (window, GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindowPrivate);
 878
 879   window->priv->actions = gtk_application_window_actions_new (window);
 880   window->priv->app_menu_section = g_menu_new ();
 881   window->priv->menubar_section = g_menu_new ();
 882   window->priv->accels = gtk_accel_group_new ();
 883   gtk_window_add_accel_group (GTK_WINDOW (window), window->priv->accels);
 884
 885   /* window->priv->actions is the one and only ref on the group, so when
 886    * we dispose, the action group will die, disconnecting all signals.
 887    */
 888   g_signal_connect_swapped (window->priv->actions, "action-added",
 889                             G_CALLBACK (g_action_group_action_added), window);
 890   g_signal_connect_swapped (window->priv->actions, "action-enabled-changed",
 891                             G_CALLBACK (g_action_group_action_enabled_changed), window);
 892   g_signal_connect_swapped (window->priv->actions, "action-state-changed",
 893                             G_CALLBACK (g_action_group_action_state_changed), window);
 894   g_signal_connect_swapped (window->priv->actions, "action-removed",
 895                             G_CALLBACK (g_action_group_action_removed), window);
 896
 897   window->priv->muxer = G_ACTION_OBSERVABLE (g_action_muxer_new ());
 898 }
 899
 900 static void
 901 gtk_application_window_class_init (GtkApplicationWindowClass *class)
 902 {
 903   GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
 904   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 905   GObjectClass *object_class = G_OBJECT_CLASS (class);
 906
 907   container_class->forall = gtk_application_window_real_forall_internal;
 908   widget_class->get_preferred_height = gtk_application_window_real_get_preferred_height;
 909   widget_class->get_preferred_height_for_width = gtk_application_window_real_get_preferred_height_for_width;
 910   widget_class->get_preferred_width = gtk_application_window_real_get_preferred_width;
 911   widget_class->get_preferred_width_for_height = gtk_application_window_real_get_preferred_width_for_height;
 912   widget_class->size_allocate = gtk_application_window_real_size_allocate;
 913   widget_class->realize = gtk_application_window_real_realize;
 914   widget_class->unrealize = gtk_application_window_real_unrealize;
 915   widget_class->map = gtk_application_window_real_map;
 916   object_class->get_property = gtk_application_window_get_property;
 917   object_class->set_property = gtk_application_window_set_property;
 918   object_class->dispose = gtk_application_window_dispose;
 919
 920   /**
 921    * GtkApplicationWindow:show-menubar:
 922    *
 923    * If this property is %TRUE, the window will display a menubar
 924    * that includes the app menu and menubar, unless these are
 925    * shown by the desktop shell. See gtk_application_set_app_menu()
 926    * and gtk_application_set_menubar().
 927    *
 928    * If %FALSE, the window will not display a menubar, regardless
 929    * of whether the desktop shell is showing the menus or not.
 930    */
 931   gtk_application_window_properties[PROP_SHOW_MENUBAR] =
 932     g_param_spec_boolean ("show-menubar",
 933                           P_("Show a menubar"),
 934                           P_("TRUE if the window should show a "
 935                              "menubar at the top of the window"),
 936                           TRUE, G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
 937   g_object_class_install_properties (object_class, N_PROPS, gtk_application_window_properties);
 938   g_type_class_add_private (class, sizeof (GtkApplicationWindowPrivate));
 939 }
 940
 941 /**
 942  * gtk_application_window_new:
 943  * @application: a #GtkApplication
 944  *
 945  * Creates a new #GtkApplicationWindow.
 946  *
 947  * Returns: a newly created #GtkApplicationWindow
 948  *
 949  * Since: 3.4
 950  */
 951 GtkWidget *
 952 gtk_application_window_new (GtkApplication *application)
 953 {
 954   g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
 955
 956   return g_object_new (GTK_TYPE_APPLICATION_WINDOW,
 957                        "application", application,
 958                        NULL);
 959 }
 960
 961 /**
 962  * gtk_application_window_get_show_menubar:
 963  * @window: a #GtkApplicationWindow
 964  *
 965  * Returns whether the window will display a menubar for the app menu
 966  * and menubar as needed.
 967  *
 968  * Returns: %TRUE if @window will display a menubar when needed
 969  *
 970  * Since: 3.4
 971  */
 972 gboolean
 973 gtk_application_window_get_show_menubar (GtkApplicationWindow *window)
 974 {
 975   return window->priv->show_menubar;
 976 }
 977
 978 /**
 979  * gtk_application_window_set_show_menubar:
 980  * @window: a #GtkApplicationWindow
 981  * @show_menubar: whether to show a menubar when needed
 982  *
 983  * Sets whether the window will display a menubar for the app menu
 984  * and menubar as needed.
 985  *
 986  * Since: 3.4
 987  */
 988 void
 989 gtk_application_window_set_show_menubar (GtkApplicationWindow *window,
 990                                          gboolean              show_menubar)
 991 {
 992   g_return_if_fail (GTK_IS_APPLICATION_WINDOW (window));
 993
 994   show_menubar = !!show_menubar;
 995
 996   if (window->priv->show_menubar != show_menubar)
 997     {
 998       window->priv->show_menubar = show_menubar;
 999
1000       gtk_application_window_update_menubar (window);
1001
1002       g_object_notify_by_pspec (G_OBJECT (window), gtk_application_window_properties[PROP_SHOW_MENUBAR]);
1003     }
1004 }
1005
1006 GSimpleActionObserver *
1007 gtk_application_window_create_observer (GtkApplicationWindow *window,
1008                                         const gchar          *action_name,
1009                                         GVariant             *target)
1010 {
1011   g_return_val_if_fail (GTK_IS_APPLICATION_WINDOW (window), NULL);
1012
1013   return g_simple_action_observer_new (window->priv->muxer, action_name, target);
1014 }