Pileus Git - ~andy/gtk/blob - gtk/gtkplug.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 Free
  16  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 /* By Owen Taylor <otaylor@gtk.org>              98/4/4 */
  20
  21 /*
  22  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  23  * file for a list of people on the GTK+ Team.  See the ChangeLog
  24  * files for a list of changes.  These files are distributed with
  25  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  26  */
  27
  28 #include "gtkmain.h"
  29 #include "gtkmarshalers.h"
  30 #include "gtkplug.h"
  31 #include "gtkprivate.h"
  32 #include "gtkplugprivate.h"
  33
  34 #include "gtkalias.h"
  35
  36 static void            gtk_plug_class_init            (GtkPlugClass     *klass);
  37 static void            gtk_plug_init                  (GtkPlug          *plug);
  38 static void            gtk_plug_finalize              (GObject          *object);
  39 static void            gtk_plug_realize               (GtkWidget        *widget);
  40 static void            gtk_plug_unrealize             (GtkWidget        *widget);
  41 static void            gtk_plug_show                  (GtkWidget        *widget);
  42 static void            gtk_plug_hide                  (GtkWidget        *widget);
  43 static void            gtk_plug_map                   (GtkWidget        *widget);
  44 static void            gtk_plug_unmap                 (GtkWidget        *widget);
  45 static void            gtk_plug_size_allocate         (GtkWidget        *widget,
  46                                                        GtkAllocation    *allocation);
  47 static gboolean        gtk_plug_key_press_event       (GtkWidget        *widget,
  48                                                        GdkEventKey      *event);
  49 static gboolean        gtk_plug_focus_event           (GtkWidget        *widget,
  50                                                        GdkEventFocus    *event);
  51 static void            gtk_plug_set_focus             (GtkWindow        *window,
  52                                                        GtkWidget        *focus);
  53 static gboolean        gtk_plug_focus                 (GtkWidget        *widget,
  54                                                        GtkDirectionType  direction);
  55 static void            gtk_plug_check_resize          (GtkContainer     *container);
  56 static void            gtk_plug_keys_changed          (GtkWindow        *window);
  57
  58 static GtkWindowClass *parent_class = NULL;
  59 static GtkBinClass *bin_class = NULL;
  60
  61 typedef struct
  62 {
  63   guint                  accelerator_key;
  64   GdkModifierType        accelerator_mods;
  65 } GrabbedKey;
  66
  67 enum {
  68   EMBEDDED,
  69   LAST_SIGNAL
  70 };
  71
  72 static guint plug_signals[LAST_SIGNAL] = { 0 };
  73
  74 GType
  75 gtk_plug_get_type (void)
  76 {
  77   static GType plug_type = 0;
  78
  79   if (!plug_type)
  80     {
  81       static const GTypeInfo plug_info =
  82       {
  83         sizeof (GtkPlugClass),
  84         NULL,           /* base_init */
  85         NULL,           /* base_finalize */
  86         (GClassInitFunc) gtk_plug_class_init,
  87         NULL,           /* class_finalize */
  88         NULL,           /* class_data */
  89         sizeof (GtkPlug),
  90         16,             /* n_preallocs */
  91         (GInstanceInitFunc) gtk_plug_init,
  92       };
  93
  94       plug_type = g_type_register_static (GTK_TYPE_WINDOW, "GtkPlug",
  95                                           &plug_info, 0);
  96     }
  97
  98   return plug_type;
  99 }
 100
 101 static void
 102 gtk_plug_class_init (GtkPlugClass *class)
 103 {
 104   GObjectClass *gobject_class = (GObjectClass *)class;
 105   GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
 106   GtkWindowClass *window_class = (GtkWindowClass *)class;
 107   GtkContainerClass *container_class = (GtkContainerClass *)class;
 108
 109   parent_class = g_type_class_peek_parent (class);
 110   bin_class = g_type_class_peek (GTK_TYPE_BIN);
 111
 112   gobject_class->finalize = gtk_plug_finalize;
 113
 114   widget_class->realize = gtk_plug_realize;
 115   widget_class->unrealize = gtk_plug_unrealize;
 116   widget_class->key_press_event = gtk_plug_key_press_event;
 117   widget_class->focus_in_event = gtk_plug_focus_event;
 118   widget_class->focus_out_event = gtk_plug_focus_event;
 119
 120   widget_class->show = gtk_plug_show;
 121   widget_class->hide = gtk_plug_hide;
 122   widget_class->map = gtk_plug_map;
 123   widget_class->unmap = gtk_plug_unmap;
 124   widget_class->size_allocate = gtk_plug_size_allocate;
 125
 126   widget_class->focus = gtk_plug_focus;
 127
 128   container_class->check_resize = gtk_plug_check_resize;
 129
 130   window_class->set_focus = gtk_plug_set_focus;
 131   window_class->keys_changed = gtk_plug_keys_changed;
 132
 133   plug_signals[EMBEDDED] =
 134     g_signal_new ("embedded",
 135                   G_OBJECT_CLASS_TYPE (class),
 136                   G_SIGNAL_RUN_LAST,
 137                   G_STRUCT_OFFSET (GtkPlugClass, embedded),
 138                   NULL, NULL,
 139                   _gtk_marshal_VOID__VOID,
 140                   G_TYPE_NONE, 0);
 141 }
 142
 143 static void
 144 gtk_plug_init (GtkPlug *plug)
 145 {
 146   GtkWindow *window;
 147
 148   window = GTK_WINDOW (plug);
 149
 150   window->type = GTK_WINDOW_TOPLEVEL;
 151 }
 152
 153 static void
 154 gtk_plug_set_is_child (GtkPlug  *plug,
 155                        gboolean  is_child)
 156 {
 157   g_assert (!GTK_WIDGET (plug)->parent);
 158
 159   if (is_child)
 160     {
 161       if (plug->modality_window)
 162         _gtk_plug_handle_modality_off (plug);
 163
 164       if (plug->modality_group)
 165         {
 166           gtk_window_group_remove_window (plug->modality_group, GTK_WINDOW (plug));
 167           g_object_unref (plug->modality_group);
 168           plug->modality_group = NULL;
 169         }
 170
 171       /* As a toplevel, the MAPPED flag doesn't correspond
 172        * to whether the widget->window is mapped; we unmap
 173        * here, but don't bother remapping -- we will get mapped
 174        * by gtk_widget_set_parent ().
 175        */
 176       if (GTK_WIDGET_MAPPED (plug))
 177         gtk_widget_unmap (GTK_WIDGET (plug));
 178
 179       GTK_WIDGET_UNSET_FLAGS (plug, GTK_TOPLEVEL);
 180       gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_PARENT);
 181
 182       _gtk_widget_propagate_hierarchy_changed (GTK_WIDGET (plug), GTK_WIDGET (plug));
 183     }
 184   else
 185     {
 186       if (GTK_WINDOW (plug)->focus_widget)
 187         gtk_window_set_focus (GTK_WINDOW (plug), NULL);
 188       if (GTK_WINDOW (plug)->default_widget)
 189         gtk_window_set_default (GTK_WINDOW (plug), NULL);
 190
 191       plug->modality_group = gtk_window_group_new ();
 192       gtk_window_group_add_window (plug->modality_group, GTK_WINDOW (plug));
 193
 194       GTK_WIDGET_SET_FLAGS (plug, GTK_TOPLEVEL);
 195       gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_QUEUE);
 196
 197       _gtk_widget_propagate_hierarchy_changed (GTK_WIDGET (plug), NULL);
 198     }
 199 }
 200
 201 /**
 202  * gtk_plug_get_id:
 203  * @plug: a #GtkPlug.
 204  *
 205  * Gets the window ID of a #GtkPlug widget, which can then
 206  * be used to embed this window inside another window, for
 207  * instance with gtk_socket_add_id().
 208  *
 209  * Return value: the window ID for the plug
 210  **/
 211 GdkNativeWindow
 212 gtk_plug_get_id (GtkPlug *plug)
 213 {
 214   g_return_val_if_fail (GTK_IS_PLUG (plug), 0);
 215
 216   if (!GTK_WIDGET_REALIZED (plug))
 217     gtk_widget_realize (GTK_WIDGET (plug));
 218
 219   return _gtk_plug_windowing_get_id (plug);
 220 }
 221
 222 /**
 223  * _gtk_plug_add_to_socket:
 224  * @plug: a #GtkPlug
 225  * @socket_: a #GtkSocket
 226  *
 227  * Adds a plug to a socket within the same application.
 228  **/
 229 void
 230 _gtk_plug_add_to_socket (GtkPlug   *plug,
 231                          GtkSocket *socket)
 232 {
 233   GtkWidget *widget;
 234   gint w, h;
 235
 236   g_return_if_fail (GTK_IS_PLUG (plug));
 237   g_return_if_fail (GTK_IS_SOCKET (socket));
 238   g_return_if_fail (GTK_WIDGET_REALIZED (socket));
 239
 240   widget = GTK_WIDGET (plug);
 241
 242   gtk_plug_set_is_child (plug, TRUE);
 243   plug->same_app = TRUE;
 244   socket->same_app = TRUE;
 245   socket->plug_widget = widget;
 246
 247   plug->socket_window = GTK_WIDGET (socket)->window;
 248
 249   if (GTK_WIDGET_REALIZED (widget))
 250     {
 251       gdk_drawable_get_size (GDK_DRAWABLE (widget->window), &w, &h);
 252       gdk_window_reparent (widget->window, plug->socket_window, -w, -h);
 253     }
 254
 255   gtk_widget_set_parent (widget, GTK_WIDGET (socket));
 256
 257   g_signal_emit_by_name (socket, "plug_added", 0);
 258 }
 259
 260 /**
 261  * _gtk_plug_send_delete_event:
 262  * widget: a #GtkWidget
 263  *
 264  * Send a GDK_DELETE event to the @widget and destroy it if
 265  * necessary. Internal GTK function, called from this file or the
 266  * backend-specific GtkPlug implementation.
 267  */
 268 void
 269 _gtk_plug_send_delete_event (GtkWidget *widget)
 270 {
 271   GdkEvent *event = gdk_event_new (GDK_DELETE);
 272
 273   event->any.window = g_object_ref (widget->window);
 274   event->any.send_event = FALSE;
 275
 276   gtk_widget_ref (widget);
 277
 278   if (!gtk_widget_event (widget, event))
 279     gtk_widget_destroy (widget);
 280
 281   gtk_widget_unref (widget);
 282
 283   gdk_event_free (event);
 284 }
 285
 286 /**
 287  * _gtk_plug_remove_from_socket:
 288  * @plug: a #GtkPlug
 289  * @socket: a #GtkSocket
 290  *
 291  * Removes a plug from a socket within the same application.
 292  **/
 293 void
 294 _gtk_plug_remove_from_socket (GtkPlug   *plug,
 295                               GtkSocket *socket)
 296 {
 297   GtkWidget *widget;
 298   gboolean result;
 299   gboolean widget_was_visible;
 300
 301   g_return_if_fail (GTK_IS_PLUG (plug));
 302   g_return_if_fail (GTK_IS_SOCKET (socket));
 303   g_return_if_fail (GTK_WIDGET_REALIZED (plug));
 304
 305   widget = GTK_WIDGET (plug);
 306
 307   if (GTK_WIDGET_IN_REPARENT (widget))
 308     return;
 309
 310   g_object_ref (plug);
 311   g_object_ref (socket);
 312
 313   widget_was_visible = GTK_WIDGET_VISIBLE (plug);
 314
 315   gdk_window_hide (widget->window);
 316   GTK_PRIVATE_SET_FLAG (plug, GTK_IN_REPARENT);
 317   gdk_window_reparent (widget->window,
 318                        gtk_widget_get_root_window (widget),
 319                        0, 0);
 320   gtk_widget_unparent (GTK_WIDGET (plug));
 321   GTK_PRIVATE_UNSET_FLAG (plug, GTK_IN_REPARENT);
 322
 323   socket->plug_widget = NULL;
 324   if (socket->plug_window != NULL)
 325     {
 326       g_object_unref (socket->plug_window);
 327       socket->plug_window = NULL;
 328     }
 329
 330   socket->same_app = FALSE;
 331
 332   plug->same_app = FALSE;
 333   plug->socket_window = NULL;
 334
 335   gtk_plug_set_is_child (plug, FALSE);
 336
 337   g_signal_emit_by_name (socket, "plug_removed", &result);
 338   if (!result)
 339     gtk_widget_destroy (GTK_WIDGET (socket));
 340
 341   if (widget->window)
 342     _gtk_plug_send_delete_event (widget);
 343
 344   g_object_unref (plug);
 345
 346   if (widget_was_visible && GTK_WIDGET_VISIBLE (socket))
 347     gtk_widget_queue_resize (GTK_WIDGET (socket));
 348
 349   g_object_unref (socket);
 350 }
 351
 352 /**
 353  * gtk_plug_construct:
 354  * @plug: a #GtkPlug.
 355  * @socket_id: the XID of the socket's window.
 356  *
 357  * Finish the initialization of @plug for a given #GtkSocket identified by
 358  * @socket_id. This function will generally only be used by classes deriving from #GtkPlug.
 359  **/
 360 void
 361 gtk_plug_construct (GtkPlug         *plug,
 362                     GdkNativeWindow  socket_id)
 363 {
 364   gtk_plug_construct_for_display (plug, gdk_display_get_default (), socket_id);
 365 }
 366
 367 /**
 368  * gtk_plug_construct_for_display:
 369  * @plug: a #GtkPlug.
 370  * @display: the #GdkDisplay associated with @socket_id's
 371  *           #GtkSocket.
 372  * @socket_id: the XID of the socket's window.
 373  *
 374  * Finish the initialization of @plug for a given #GtkSocket identified by
 375  * @socket_id which is currently displayed on @display.
 376  * This function will generally only be used by classes deriving from #GtkPlug.
 377  *
 378  * Since: 2.2
 379  **/
 380 void
 381 gtk_plug_construct_for_display (GtkPlug         *plug,
 382                                 GdkDisplay      *display,
 383                                 GdkNativeWindow  socket_id)
 384 {
 385   if (socket_id)
 386     {
 387       gpointer user_data = NULL;
 388
 389       plug->socket_window = gdk_window_lookup_for_display (display, socket_id);
 390
 391       if (plug->socket_window)
 392         gdk_window_get_user_data (plug->socket_window, &user_data);
 393       else
 394         plug->socket_window = gdk_window_foreign_new_for_display (display, socket_id);
 395
 396       if (user_data)
 397         {
 398           if (GTK_IS_SOCKET (user_data))
 399             _gtk_plug_add_to_socket (plug, user_data);
 400           else
 401             {
 402               g_warning (G_STRLOC "Can't create GtkPlug as child of non-GtkSocket");
 403               plug->socket_window = NULL;
 404             }
 405         }
 406
 407       if (plug->socket_window)
 408         g_signal_emit (plug, plug_signals[EMBEDDED], 0);
 409     }
 410 }
 411
 412 /**
 413  * gtk_plug_new:
 414  * @socket_id:  the window ID of the socket, or 0.
 415  *
 416  * Creates a new plug widget inside the #GtkSocket identified
 417  * by @socket_id. If @socket_id is 0, the plug is left "unplugged" and
 418  * can later be plugged into a #GtkSocket by  gtk_socket_add_id().
 419  *
 420  * Return value: the new #GtkPlug widget.
 421  **/
 422 GtkWidget*
 423 gtk_plug_new (GdkNativeWindow socket_id)
 424 {
 425   return gtk_plug_new_for_display (gdk_display_get_default (), socket_id);
 426 }
 427
 428 /**
 429  * gtk_plug_new_for_display:
 430  * @display : the #GdkDisplay on which @socket_id is displayed
 431  * @socket_id: the XID of the socket's window.
 432  *
 433  * Create a new plug widget inside the #GtkSocket identified by socket_id.
 434  *
 435  * Return value: the new #GtkPlug widget.
 436  *
 437  * Since: 2.2
 438  */
 439 GtkWidget*
 440 gtk_plug_new_for_display (GdkDisplay      *display,
 441                           GdkNativeWindow  socket_id)
 442 {
 443   GtkPlug *plug;
 444
 445   plug = g_object_new (GTK_TYPE_PLUG, NULL);
 446   gtk_plug_construct_for_display (plug, display, socket_id);
 447   return GTK_WIDGET (plug);
 448 }
 449
 450 static void
 451 gtk_plug_finalize (GObject *object)
 452 {
 453   GtkPlug *plug = GTK_PLUG (object);
 454
 455   if (plug->grabbed_keys)
 456     {
 457       g_hash_table_destroy (plug->grabbed_keys);
 458       plug->grabbed_keys = NULL;
 459     }
 460
 461   G_OBJECT_CLASS (parent_class)->finalize (object);
 462 }
 463
 464 static void
 465 gtk_plug_unrealize (GtkWidget *widget)
 466 {
 467   GtkPlug *plug;
 468
 469   g_return_if_fail (GTK_IS_PLUG (widget));
 470
 471   plug = GTK_PLUG (widget);
 472
 473   if (plug->socket_window != NULL)
 474     {
 475       gdk_window_set_user_data (plug->socket_window, NULL);
 476       g_object_unref (plug->socket_window);
 477       plug->socket_window = NULL;
 478     }
 479
 480   if (!plug->same_app)
 481     {
 482       if (plug->modality_window)
 483         _gtk_plug_handle_modality_off (plug);
 484
 485       gtk_window_group_remove_window (plug->modality_group, GTK_WINDOW (plug));
 486       g_object_unref (plug->modality_group);
 487     }
 488
 489   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 490     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 491 }
 492
 493 static void
 494 gtk_plug_realize (GtkWidget *widget)
 495 {
 496   GtkWindow *window;
 497   GtkPlug *plug;
 498   GdkWindowAttr attributes;
 499   gint attributes_mask;
 500
 501   g_return_if_fail (GTK_IS_PLUG (widget));
 502
 503   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 504   window = GTK_WINDOW (widget);
 505   plug = GTK_PLUG (widget);
 506
 507   attributes.window_type = GDK_WINDOW_CHILD;    /* XXX GDK_WINDOW_PLUG ? */
 508   attributes.title = window->title;
 509   attributes.wmclass_name = window->wmclass_name;
 510   attributes.wmclass_class = window->wmclass_class;
 511   attributes.width = widget->allocation.width;
 512   attributes.height = widget->allocation.height;
 513   attributes.wclass = GDK_INPUT_OUTPUT;
 514
 515   /* this isn't right - we should match our parent's visual/colormap.
 516    * though that will require handling "foreign" colormaps */
 517   attributes.visual = gtk_widget_get_visual (widget);
 518   attributes.colormap = gtk_widget_get_colormap (widget);
 519   attributes.event_mask = gtk_widget_get_events (widget);
 520   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 521                             GDK_KEY_PRESS_MASK |
 522                             GDK_KEY_RELEASE_MASK |
 523                             GDK_ENTER_NOTIFY_MASK |
 524                             GDK_LEAVE_NOTIFY_MASK |
 525                             GDK_STRUCTURE_MASK);
 526
 527   attributes_mask = GDK_WA_VISUAL | GDK_WA_COLORMAP;
 528   attributes_mask |= (window->title ? GDK_WA_TITLE : 0);
 529   attributes_mask |= (window->wmclass_name ? GDK_WA_WMCLASS : 0);
 530
 531   if (GTK_WIDGET_TOPLEVEL (widget))
 532     {
 533       attributes.window_type = GDK_WINDOW_TOPLEVEL;
 534
 535       gdk_error_trap_push ();
 536       if (plug->socket_window)
 537         widget->window = gdk_window_new (plug->socket_window,
 538                                          &attributes, attributes_mask);
 539       else /* If it's a passive plug, we use the root window */
 540         widget->window = gdk_window_new (gtk_widget_get_root_window (widget),
 541                                          &attributes, attributes_mask);
 542
 543       gdk_display_sync (gtk_widget_get_display (widget));
 544       if (gdk_error_trap_pop ()) /* Uh-oh */
 545         {
 546           gdk_error_trap_push ();
 547           gdk_window_destroy (widget->window);
 548           gdk_flush ();
 549           gdk_error_trap_pop ();
 550           widget->window = gdk_window_new (gtk_widget_get_root_window (widget),
 551                                            &attributes, attributes_mask);
 552         }
 553
 554       gdk_window_add_filter (widget->window,
 555                              _gtk_plug_windowing_filter_func,
 556                              widget);
 557
 558       plug->modality_group = gtk_window_group_new ();
 559       gtk_window_group_add_window (plug->modality_group, window);
 560
 561       _gtk_plug_windowing_realize_toplevel (plug);
 562     }
 563   else
 564     widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 565                                      &attributes, attributes_mask);
 566
 567   gdk_window_set_user_data (widget->window, window);
 568
 569   widget->style = gtk_style_attach (widget->style, widget->window);
 570   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 571
 572   gdk_window_enable_synchronized_configure (widget->window);
 573 }
 574
 575 static void
 576 gtk_plug_show (GtkWidget *widget)
 577 {
 578   if (GTK_WIDGET_TOPLEVEL (widget))
 579     GTK_WIDGET_CLASS (parent_class)->show (widget);
 580   else
 581     GTK_WIDGET_CLASS (bin_class)->show (widget);
 582 }
 583
 584 static void
 585 gtk_plug_hide (GtkWidget *widget)
 586 {
 587   if (GTK_WIDGET_TOPLEVEL (widget))
 588     GTK_WIDGET_CLASS (parent_class)->hide (widget);
 589   else
 590     GTK_WIDGET_CLASS (bin_class)->hide (widget);
 591 }
 592
 593 /* From gdkinternals.h */
 594 void gdk_synthesize_window_state (GdkWindow     *window,
 595                                   GdkWindowState unset_flags,
 596                                   GdkWindowState set_flags);
 597
 598 static void
 599 gtk_plug_map (GtkWidget *widget)
 600 {
 601   if (GTK_WIDGET_TOPLEVEL (widget))
 602     {
 603       GtkBin *bin = GTK_BIN (widget);
 604       GtkPlug *plug = GTK_PLUG (widget);
 605
 606       GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 607
 608       if (bin->child &&
 609           GTK_WIDGET_VISIBLE (bin->child) &&
 610           !GTK_WIDGET_MAPPED (bin->child))
 611         gtk_widget_map (bin->child);
 612
 613       _gtk_plug_windowing_map_toplevel (plug);
 614
 615       gdk_synthesize_window_state (widget->window,
 616                                    GDK_WINDOW_STATE_WITHDRAWN,
 617                                    0);
 618     }
 619   else
 620     GTK_WIDGET_CLASS (bin_class)->map (widget);
 621 }
 622
 623 static void
 624 gtk_plug_unmap (GtkWidget *widget)
 625 {
 626   if (GTK_WIDGET_TOPLEVEL (widget))
 627     {
 628       GtkPlug *plug = GTK_PLUG (widget);
 629
 630       GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 631
 632       gdk_window_hide (widget->window);
 633
 634       _gtk_plug_windowing_unmap_toplevel (plug);
 635
 636       gdk_synthesize_window_state (widget->window,
 637                                    0,
 638                                    GDK_WINDOW_STATE_WITHDRAWN);
 639     }
 640   else
 641     GTK_WIDGET_CLASS (bin_class)->unmap (widget);
 642 }
 643
 644 static void
 645 gtk_plug_size_allocate (GtkWidget     *widget,
 646                         GtkAllocation *allocation)
 647 {
 648   if (GTK_WIDGET_TOPLEVEL (widget))
 649     GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
 650   else
 651     {
 652       GtkBin *bin = GTK_BIN (widget);
 653
 654       widget->allocation = *allocation;
 655
 656       if (GTK_WIDGET_REALIZED (widget))
 657         gdk_window_move_resize (widget->window,
 658                                 allocation->x, allocation->y,
 659                                 allocation->width, allocation->height);
 660
 661       if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 662         {
 663           GtkAllocation child_allocation;
 664
 665           child_allocation.x = child_allocation.y = GTK_CONTAINER (widget)->border_width;
 666           child_allocation.width =
 667             MAX (1, (gint)allocation->width - child_allocation.x * 2);
 668           child_allocation.height =
 669             MAX (1, (gint)allocation->height - child_allocation.y * 2);
 670
 671           gtk_widget_size_allocate (bin->child, &child_allocation);
 672         }
 673
 674     }
 675 }
 676
 677 static gboolean
 678 gtk_plug_key_press_event (GtkWidget   *widget,
 679                           GdkEventKey *event)
 680 {
 681   if (GTK_WIDGET_TOPLEVEL (widget))
 682     return GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event);
 683   else
 684     return FALSE;
 685 }
 686
 687 static gboolean
 688 gtk_plug_focus_event (GtkWidget      *widget,
 689                       GdkEventFocus  *event)
 690 {
 691   /* We eat focus-in events and focus-out events, since they
 692    * can be generated by something like a keyboard grab on
 693    * a child of the plug.
 694    */
 695   return FALSE;
 696 }
 697
 698 static void
 699 gtk_plug_set_focus (GtkWindow *window,
 700                     GtkWidget *focus)
 701 {
 702   GtkPlug *plug = GTK_PLUG (window);
 703
 704   GTK_WINDOW_CLASS (parent_class)->set_focus (window, focus);
 705
 706   /* Ask for focus from embedder
 707    */
 708
 709   if (focus && !window->has_toplevel_focus)
 710     _gtk_plug_windowing_set_focus (plug);
 711 }
 712
 713 static guint
 714 grabbed_key_hash (gconstpointer a)
 715 {
 716   const GrabbedKey *key = a;
 717   guint h;
 718
 719   h = key->accelerator_key << 16;
 720   h ^= key->accelerator_key >> 16;
 721   h ^= key->accelerator_mods;
 722
 723   return h;
 724 }
 725
 726 static gboolean
 727 grabbed_key_equal (gconstpointer a, gconstpointer b)
 728 {
 729   const GrabbedKey *keya = a;
 730   const GrabbedKey *keyb = b;
 731
 732   return (keya->accelerator_key == keyb->accelerator_key &&
 733           keya->accelerator_mods == keyb->accelerator_mods);
 734 }
 735
 736 static void
 737 add_grabbed_key (gpointer key, gpointer val, gpointer data)
 738 {
 739   GrabbedKey *grabbed_key = key;
 740   GtkPlug *plug = data;
 741
 742   if (!plug->grabbed_keys ||
 743       !g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
 744     {
 745       _gtk_plug_windowing_add_grabbed_key (plug,
 746                                            grabbed_key->accelerator_key,
 747                                            grabbed_key->accelerator_mods);
 748     }
 749 }
 750
 751 static void
 752 add_grabbed_key_always (gpointer key,
 753                         gpointer val,
 754                         gpointer data)
 755 {
 756   GrabbedKey *grabbed_key = key;
 757   GtkPlug *plug = data;
 758
 759   _gtk_plug_windowing_add_grabbed_key (plug,
 760                                        grabbed_key->accelerator_key,
 761                                        grabbed_key->accelerator_mods);
 762 }
 763
 764 /**
 765  * _gtk_plug_add_all_grabbed_keys:
 766  *
 767  * @plug: a #GtkPlug
 768  *
 769  * Calls _gtk_plug_windowing_add_grabbed_key() on all the grabbed keys
 770  * in the @plug.
 771  */
 772 void
 773 _gtk_plug_add_all_grabbed_keys (GtkPlug *plug)
 774 {
 775   if (plug->grabbed_keys)
 776     g_hash_table_foreach (plug->grabbed_keys, add_grabbed_key_always, plug);
 777 }
 778
 779 static void
 780 remove_grabbed_key (gpointer key, gpointer val, gpointer data)
 781 {
 782   GrabbedKey *grabbed_key = key;
 783   GtkPlug *plug = data;
 784
 785   if (!plug->grabbed_keys ||
 786       !g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
 787     {
 788       _gtk_plug_windowing_remove_grabbed_key (plug,
 789                                               grabbed_key->accelerator_key,
 790                                               grabbed_key->accelerator_mods);
 791     }
 792 }
 793
 794 static void
 795 keys_foreach (GtkWindow      *window,
 796               guint           keyval,
 797               GdkModifierType modifiers,
 798               gboolean        is_mnemonic,
 799               gpointer        data)
 800 {
 801   GHashTable *new_grabbed_keys = data;
 802   GrabbedKey *key = g_new (GrabbedKey, 1);
 803
 804   key->accelerator_key = keyval;
 805   key->accelerator_mods = modifiers;
 806
 807   g_hash_table_replace (new_grabbed_keys, key, key);
 808 }
 809
 810 static void
 811 gtk_plug_keys_changed (GtkWindow *window)
 812 {
 813   GHashTable *new_grabbed_keys, *old_grabbed_keys;
 814   GtkPlug *plug = GTK_PLUG (window);
 815
 816   new_grabbed_keys = g_hash_table_new_full (grabbed_key_hash, grabbed_key_equal, (GDestroyNotify)g_free, NULL);
 817   _gtk_window_keys_foreach (window, keys_foreach, new_grabbed_keys);
 818
 819   if (plug->socket_window)
 820     g_hash_table_foreach (new_grabbed_keys, add_grabbed_key, plug);
 821
 822   old_grabbed_keys = plug->grabbed_keys;
 823   plug->grabbed_keys = new_grabbed_keys;
 824
 825   if (old_grabbed_keys)
 826     {
 827       if (plug->socket_window)
 828         g_hash_table_foreach (old_grabbed_keys, remove_grabbed_key, plug);
 829       g_hash_table_destroy (old_grabbed_keys);
 830     }
 831 }
 832
 833 static gboolean
 834 gtk_plug_focus (GtkWidget        *widget,
 835                 GtkDirectionType  direction)
 836 {
 837   GtkBin *bin = GTK_BIN (widget);
 838   GtkPlug *plug = GTK_PLUG (widget);
 839   GtkWindow *window = GTK_WINDOW (widget);
 840   GtkContainer *container = GTK_CONTAINER (widget);
 841   GtkWidget *old_focus_child = container->focus_child;
 842   GtkWidget *parent;
 843
 844   /* We override GtkWindow's behavior, since we don't want wrapping here.
 845    */
 846   if (old_focus_child)
 847     {
 848       if (gtk_widget_child_focus (old_focus_child, direction))
 849         return TRUE;
 850
 851       if (window->focus_widget)
 852         {
 853           /* Wrapped off the end, clear the focus setting for the toplevel */
 854           parent = window->focus_widget->parent;
 855           while (parent)
 856             {
 857               gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 858               parent = GTK_WIDGET (parent)->parent;
 859             }
 860
 861           gtk_window_set_focus (GTK_WINDOW (container), NULL);
 862         }
 863     }
 864   else
 865     {
 866       /* Try to focus the first widget in the window */
 867       if (bin->child && gtk_widget_child_focus (bin->child, direction))
 868         return TRUE;
 869     }
 870
 871   if (!GTK_CONTAINER (window)->focus_child)
 872     _gtk_plug_windowing_focus_to_parent (plug, direction);
 873
 874   return FALSE;
 875 }
 876
 877 static void
 878 gtk_plug_check_resize (GtkContainer *container)
 879 {
 880   if (GTK_WIDGET_TOPLEVEL (container))
 881     GTK_CONTAINER_CLASS (parent_class)->check_resize (container);
 882   else
 883     GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
 884 }
 885
 886 /**
 887  * _gtk_plug_handle_modality_on:
 888  *
 889  * @plug: a #GtkPlug
 890  *
 891  * Called from the GtkPlug backend when the corresponding socket has
 892  * told the plug that it modality has toggled on.
 893  */
 894 void
 895 _gtk_plug_handle_modality_on (GtkPlug *plug)
 896 {
 897   if (!plug->modality_window)
 898     {
 899       plug->modality_window = gtk_window_new (GTK_WINDOW_POPUP);
 900       gtk_window_set_screen (GTK_WINDOW (plug->modality_window),
 901                              gtk_widget_get_screen (GTK_WIDGET (plug)));
 902       gtk_widget_realize (plug->modality_window);
 903       gtk_window_group_add_window (plug->modality_group, GTK_WINDOW (plug->modality_window));
 904       gtk_grab_add (plug->modality_window);
 905     }
 906 }
 907
 908 /**
 909  * _gtk_plug_handle_modality_off:
 910  *
 911  * @plug: a #GtkPlug
 912  *
 913  * Called from the GtkPlug backend when the corresponding socket has
 914  * told the plug that it modality has toggled off.
 915  */
 916 void
 917 _gtk_plug_handle_modality_off (GtkPlug *plug)
 918 {
 919   if (plug->modality_window)
 920     {
 921       gtk_widget_destroy (plug->modality_window);
 922       plug->modality_window = NULL;
 923     }
 924 }
 925
 926 /**
 927  * _gtk_plug_focus_first_last:
 928  *
 929  * @plug: a #GtkPlug
 930  * @direction: a direction
 931  *
 932  * Called from the GtkPlug backend when the corresponding socket has
 933  * told the plug that it has received the focus.
 934  */
 935 void
 936 _gtk_plug_focus_first_last (GtkPlug          *plug,
 937                             GtkDirectionType  direction)
 938 {
 939   GtkWindow *window = GTK_WINDOW (plug);
 940   GtkWidget *parent;
 941
 942   if (window->focus_widget)
 943     {
 944       parent = window->focus_widget->parent;
 945       while (parent)
 946         {
 947           gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 948           parent = GTK_WIDGET (parent)->parent;
 949         }
 950
 951       gtk_window_set_focus (GTK_WINDOW (plug), NULL);
 952     }
 953
 954   gtk_widget_child_focus (GTK_WIDGET (plug), direction);
 955 }
 956
 957 #define __GTK_PLUG_C__
 958 #include "gtkaliasdef.c"