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