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 <config.h>
  29
  30 #include "gtkmain.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkplug.h"
  33 #include "gtkintl.h"
  34 #include "gtkprivate.h"
  35 #include "gtkplugprivate.h"
  36
  37 #include "gtkalias.h"
  38
  39 static void            gtk_plug_get_property          (GObject     *object,
  40                                                        guint        prop_id,
  41                                                        GValue      *value,
  42                                                        GParamSpec  *pspec);
  43 static void            gtk_plug_finalize              (GObject          *object);
  44 static void            gtk_plug_realize               (GtkWidget        *widget);
  45 static void            gtk_plug_unrealize             (GtkWidget        *widget);
  46 static void            gtk_plug_show                  (GtkWidget        *widget);
  47 static void            gtk_plug_hide                  (GtkWidget        *widget);
  48 static void            gtk_plug_map                   (GtkWidget        *widget);
  49 static void            gtk_plug_unmap                 (GtkWidget        *widget);
  50 static void            gtk_plug_size_allocate         (GtkWidget        *widget,
  51                                                        GtkAllocation    *allocation);
  52 static gboolean        gtk_plug_key_press_event       (GtkWidget        *widget,
  53                                                        GdkEventKey      *event);
  54 static gboolean        gtk_plug_focus_event           (GtkWidget        *widget,
  55                                                        GdkEventFocus    *event);
  56 static void            gtk_plug_set_focus             (GtkWindow        *window,
  57                                                        GtkWidget        *focus);
  58 static gboolean        gtk_plug_focus                 (GtkWidget        *widget,
  59                                                        GtkDirectionType  direction);
  60 static void            gtk_plug_check_resize          (GtkContainer     *container);
  61 static void            gtk_plug_keys_changed          (GtkWindow        *window);
  62
  63 static GtkBinClass *bin_class = NULL;
  64
  65 typedef struct
  66 {
  67   guint                  accelerator_key;
  68   GdkModifierType        accelerator_mods;
  69 } GrabbedKey;
  70
  71 enum {
  72   PROP_0,
  73   PROP_EMBEDDED,
  74 };
  75
  76 enum {
  77   EMBEDDED,
  78   LAST_SIGNAL
  79 };
  80
  81 static guint plug_signals[LAST_SIGNAL] = { 0 };
  82
  83 G_DEFINE_TYPE (GtkPlug, gtk_plug, GTK_TYPE_WINDOW)
  84
  85 static void
  86 gtk_plug_get_property (GObject    *object,
  87                        guint       prop_id,
  88                        GValue     *value,
  89                        GParamSpec *pspec)
  90 {
  91   GtkPlug *plug = GTK_PLUG (object);
  92
  93   switch (prop_id)
  94     {
  95     case PROP_EMBEDDED:
  96       g_value_set_boolean (value, plug->socket_window != NULL);
  97       break;
  98     default:
  99       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 100       break;
 101     }
 102 }
 103
 104 static void
 105 gtk_plug_class_init (GtkPlugClass *class)
 106 {
 107   GObjectClass *gobject_class = (GObjectClass *)class;
 108   GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
 109   GtkWindowClass *window_class = (GtkWindowClass *)class;
 110   GtkContainerClass *container_class = (GtkContainerClass *)class;
 111
 112   bin_class = g_type_class_peek (GTK_TYPE_BIN);
 113
 114   gobject_class->get_property = gtk_plug_get_property;
 115   gobject_class->finalize = gtk_plug_finalize;
 116
 117   widget_class->realize = gtk_plug_realize;
 118   widget_class->unrealize = gtk_plug_unrealize;
 119   widget_class->key_press_event = gtk_plug_key_press_event;
 120   widget_class->focus_in_event = gtk_plug_focus_event;
 121   widget_class->focus_out_event = gtk_plug_focus_event;
 122
 123   widget_class->show = gtk_plug_show;
 124   widget_class->hide = gtk_plug_hide;
 125   widget_class->map = gtk_plug_map;
 126   widget_class->unmap = gtk_plug_unmap;
 127   widget_class->size_allocate = gtk_plug_size_allocate;
 128
 129   widget_class->focus = gtk_plug_focus;
 130
 131   container_class->check_resize = gtk_plug_check_resize;
 132
 133   window_class->set_focus = gtk_plug_set_focus;
 134   window_class->keys_changed = gtk_plug_keys_changed;
 135
 136   /**
 137    * GtkPlug:embedded:
 138    *
 139    * %TRUE if the plug is embedded in a socket.
 140    *
 141    * Since: 2.12
 142    */
 143   g_object_class_install_property (gobject_class,
 144                                    PROP_EMBEDDED,
 145                                    g_param_spec_boolean ("embedded",
 146                                                          P_("Embedded"),
 147                                                          P_("Whether or not the plug is embedded"),
 148                                                          FALSE,
 149                                                          GTK_PARAM_READABLE));
 150
 151   /**
 152    * GtkPlug::embedded:
 153    * @plug: the object on which the signal was emitted
 154    *
 155    * Gets emitted when the plug becomes embedded in a socket
 156    * and when the embedding ends.
 157    */
 158   plug_signals[EMBEDDED] =
 159     g_signal_new (I_("embedded"),
 160                   G_OBJECT_CLASS_TYPE (class),
 161                   G_SIGNAL_RUN_LAST,
 162                   G_STRUCT_OFFSET (GtkPlugClass, embedded),
 163                   NULL, NULL,
 164                   _gtk_marshal_VOID__VOID,
 165                   G_TYPE_NONE, 0);
 166 }
 167
 168 static void
 169 gtk_plug_init (GtkPlug *plug)
 170 {
 171   GtkWindow *window;
 172
 173   window = GTK_WINDOW (plug);
 174
 175   window->type = GTK_WINDOW_TOPLEVEL;
 176 }
 177
 178 static void
 179 gtk_plug_set_is_child (GtkPlug  *plug,
 180                        gboolean  is_child)
 181 {
 182   g_assert (!GTK_WIDGET (plug)->parent);
 183
 184   if (is_child)
 185     {
 186       if (plug->modality_window)
 187         _gtk_plug_handle_modality_off (plug);
 188
 189       if (plug->modality_group)
 190         {
 191           gtk_window_group_remove_window (plug->modality_group, GTK_WINDOW (plug));
 192           g_object_unref (plug->modality_group);
 193           plug->modality_group = NULL;
 194         }
 195
 196       /* As a toplevel, the MAPPED flag doesn't correspond
 197        * to whether the widget->window is mapped; we unmap
 198        * here, but don't bother remapping -- we will get mapped
 199        * by gtk_widget_set_parent ().
 200        */
 201       if (GTK_WIDGET_MAPPED (plug))
 202         gtk_widget_unmap (GTK_WIDGET (plug));
 203
 204       GTK_WIDGET_UNSET_FLAGS (plug, GTK_TOPLEVEL);
 205       gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_PARENT);
 206
 207       _gtk_widget_propagate_hierarchy_changed (GTK_WIDGET (plug), GTK_WIDGET (plug));
 208     }
 209   else
 210     {
 211       if (GTK_WINDOW (plug)->focus_widget)
 212         gtk_window_set_focus (GTK_WINDOW (plug), NULL);
 213       if (GTK_WINDOW (plug)->default_widget)
 214         gtk_window_set_default (GTK_WINDOW (plug), NULL);
 215
 216       plug->modality_group = gtk_window_group_new ();
 217       gtk_window_group_add_window (plug->modality_group, GTK_WINDOW (plug));
 218
 219       GTK_WIDGET_SET_FLAGS (plug, GTK_TOPLEVEL);
 220       gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_QUEUE);
 221
 222       _gtk_widget_propagate_hierarchy_changed (GTK_WIDGET (plug), NULL);
 223     }
 224 }
 225
 226 /**
 227  * gtk_plug_get_id:
 228  * @plug: a #GtkPlug.
 229  *
 230  * Gets the window ID of a #GtkPlug widget, which can then
 231  * be used to embed this window inside another window, for
 232  * instance with gtk_socket_add_id().
 233  *
 234  * Return value: the window ID for the plug
 235  **/
 236 GdkNativeWindow
 237 gtk_plug_get_id (GtkPlug *plug)
 238 {
 239   g_return_val_if_fail (GTK_IS_PLUG (plug), 0);
 240
 241   if (!GTK_WIDGET_REALIZED (plug))
 242     gtk_widget_realize (GTK_WIDGET (plug));
 243
 244   return _gtk_plug_windowing_get_id (plug);
 245 }
 246
 247 /**
 248  * gtk_plug_get_embedded:
 249  * @plug: a #GtkPlug
 250  *
 251  * Determines whether the plug is embedded in a socket.
 252  *
 253  * Return value: %TRUE if the plug is embedded in a socket
 254  **/
 255 gboolean
 256 gtk_plug_get_embedded (GtkPlug *plug)
 257 {
 258   g_return_val_if_fail (GTK_IS_PLUG (plug), NULL);
 259
 260   return plug->socket_window != NULL;
 261 }
 262
 263 /**
 264  * _gtk_plug_add_to_socket:
 265  * @plug: a #GtkPlug
 266  * @socket_: a #GtkSocket
 267  *
 268  * Adds a plug to a socket within the same application.
 269  **/
 270 void
 271 _gtk_plug_add_to_socket (GtkPlug   *plug,
 272                          GtkSocket *socket_)
 273 {
 274   GtkWidget *widget;
 275   gint w, h;
 276
 277   g_return_if_fail (GTK_IS_PLUG (plug));
 278   g_return_if_fail (GTK_IS_SOCKET (socket_));
 279   g_return_if_fail (GTK_WIDGET_REALIZED (socket_));
 280
 281   widget = GTK_WIDGET (plug);
 282
 283   gtk_plug_set_is_child (plug, TRUE);
 284   plug->same_app = TRUE;
 285   socket_->same_app = TRUE;
 286   socket_->plug_widget = widget;
 287
 288   plug->socket_window = GTK_WIDGET (socket_)->window;
 289
 290   if (GTK_WIDGET_REALIZED (widget))
 291     {
 292       gdk_drawable_get_size (GDK_DRAWABLE (widget->window), &w, &h);
 293       gdk_window_reparent (widget->window, plug->socket_window, -w, -h);
 294     }
 295
 296   gtk_widget_set_parent (widget, GTK_WIDGET (socket_));
 297
 298   g_signal_emit_by_name (socket_, "plug_added");
 299 }
 300
 301 /**
 302  * _gtk_plug_send_delete_event:
 303  * @widget: a #GtkWidget
 304  *
 305  * Send a GDK_DELETE event to the @widget and destroy it if
 306  * necessary. Internal GTK function, called from this file or the
 307  * backend-specific GtkPlug implementation.
 308  */
 309 void
 310 _gtk_plug_send_delete_event (GtkWidget *widget)
 311 {
 312   GdkEvent *event = gdk_event_new (GDK_DELETE);
 313
 314   event->any.window = g_object_ref (widget->window);
 315   event->any.send_event = FALSE;
 316
 317   g_object_ref (widget);
 318
 319   if (!gtk_widget_event (widget, event))
 320     gtk_widget_destroy (widget);
 321
 322   g_object_unref (widget);
 323
 324   gdk_event_free (event);
 325 }
 326
 327 /**
 328  * _gtk_plug_remove_from_socket:
 329  * @plug: a #GtkPlug
 330  * @socket_: a #GtkSocket
 331  *
 332  * Removes a plug from a socket within the same application.
 333  **/
 334 void
 335 _gtk_plug_remove_from_socket (GtkPlug   *plug,
 336                               GtkSocket *socket_)
 337 {
 338   GtkWidget *widget;
 339   gboolean result;
 340   gboolean widget_was_visible;
 341
 342   g_return_if_fail (GTK_IS_PLUG (plug));
 343   g_return_if_fail (GTK_IS_SOCKET (socket_));
 344   g_return_if_fail (GTK_WIDGET_REALIZED (plug));
 345
 346   widget = GTK_WIDGET (plug);
 347
 348   if (GTK_WIDGET_IN_REPARENT (widget))
 349     return;
 350
 351   g_object_ref (plug);
 352   g_object_ref (socket_);
 353
 354   widget_was_visible = GTK_WIDGET_VISIBLE (plug);
 355
 356   gdk_window_hide (widget->window);
 357   GTK_PRIVATE_SET_FLAG (plug, GTK_IN_REPARENT);
 358   gdk_window_reparent (widget->window,
 359                        gtk_widget_get_root_window (widget),
 360                        0, 0);
 361   gtk_widget_unparent (GTK_WIDGET (plug));
 362   GTK_PRIVATE_UNSET_FLAG (plug, GTK_IN_REPARENT);
 363
 364   socket_->plug_widget = NULL;
 365   if (socket_->plug_window != NULL)
 366     {
 367       g_object_unref (socket_->plug_window);
 368       socket_->plug_window = NULL;
 369     }
 370
 371   socket_->same_app = FALSE;
 372
 373   plug->same_app = FALSE;
 374   plug->socket_window = NULL;
 375
 376   gtk_plug_set_is_child (plug, FALSE);
 377
 378   g_signal_emit_by_name (socket_, "plug_removed", &result);
 379   if (!result)
 380     gtk_widget_destroy (GTK_WIDGET (socket_));
 381
 382   if (widget->window)
 383     _gtk_plug_send_delete_event (widget);
 384
 385   g_object_unref (plug);
 386
 387   if (widget_was_visible && GTK_WIDGET_VISIBLE (socket_))
 388     gtk_widget_queue_resize (GTK_WIDGET (socket_));
 389
 390   g_object_unref (socket_);
 391 }
 392
 393 /**
 394  * gtk_plug_construct:
 395  * @plug: a #GtkPlug.
 396  * @socket_id: the XID of the socket's window.
 397  *
 398  * Finish the initialization of @plug for a given #GtkSocket identified by
 399  * @socket_id. This function will generally only be used by classes deriving from #GtkPlug.
 400  **/
 401 void
 402 gtk_plug_construct (GtkPlug         *plug,
 403                     GdkNativeWindow  socket_id)
 404 {
 405   gtk_plug_construct_for_display (plug, gdk_display_get_default (), socket_id);
 406 }
 407
 408 /**
 409  * gtk_plug_construct_for_display:
 410  * @plug: a #GtkPlug.
 411  * @display: the #GdkDisplay associated with @socket_id's
 412  *           #GtkSocket.
 413  * @socket_id: the XID of the socket's window.
 414  *
 415  * Finish the initialization of @plug for a given #GtkSocket identified by
 416  * @socket_id which is currently displayed on @display.
 417  * This function will generally only be used by classes deriving from #GtkPlug.
 418  *
 419  * Since: 2.2
 420  **/
 421 void
 422 gtk_plug_construct_for_display (GtkPlug         *plug,
 423                                 GdkDisplay      *display,
 424                                 GdkNativeWindow  socket_id)
 425 {
 426   if (socket_id)
 427     {
 428       gpointer user_data = NULL;
 429
 430       plug->socket_window = gdk_window_lookup_for_display (display, socket_id);
 431
 432       if (plug->socket_window)
 433         gdk_window_get_user_data (plug->socket_window, &user_data);
 434       else
 435         plug->socket_window = gdk_window_foreign_new_for_display (display, socket_id);
 436
 437       if (user_data)
 438         {
 439           if (GTK_IS_SOCKET (user_data))
 440             _gtk_plug_add_to_socket (plug, user_data);
 441           else
 442             {
 443               g_warning (G_STRLOC "Can't create GtkPlug as child of non-GtkSocket");
 444               plug->socket_window = NULL;
 445             }
 446         }
 447
 448       if (plug->socket_window) {
 449         g_signal_emit (plug, plug_signals[EMBEDDED], 0);
 450
 451         g_object_notify (G_OBJECT (plug), "embedded");
 452       }
 453     }
 454 }
 455
 456 /**
 457  * gtk_plug_new:
 458  * @socket_id:  the window ID of the socket, or 0.
 459  *
 460  * Creates a new plug widget inside the #GtkSocket identified
 461  * by @socket_id. If @socket_id is 0, the plug is left "unplugged" and
 462  * can later be plugged into a #GtkSocket by  gtk_socket_add_id().
 463  *
 464  * Return value: the new #GtkPlug widget.
 465  **/
 466 GtkWidget*
 467 gtk_plug_new (GdkNativeWindow socket_id)
 468 {
 469   return gtk_plug_new_for_display (gdk_display_get_default (), socket_id);
 470 }
 471
 472 /**
 473  * gtk_plug_new_for_display:
 474  * @display : the #GdkDisplay on which @socket_id is displayed
 475  * @socket_id: the XID of the socket's window.
 476  *
 477  * Create a new plug widget inside the #GtkSocket identified by socket_id.
 478  *
 479  * Return value: the new #GtkPlug widget.
 480  *
 481  * Since: 2.2
 482  */
 483 GtkWidget*
 484 gtk_plug_new_for_display (GdkDisplay      *display,
 485                           GdkNativeWindow  socket_id)
 486 {
 487   GtkPlug *plug;
 488
 489   plug = g_object_new (GTK_TYPE_PLUG, NULL);
 490   gtk_plug_construct_for_display (plug, display, socket_id);
 491   return GTK_WIDGET (plug);
 492 }
 493
 494 static void
 495 gtk_plug_finalize (GObject *object)
 496 {
 497   GtkPlug *plug = GTK_PLUG (object);
 498
 499   if (plug->grabbed_keys)
 500     {
 501       g_hash_table_destroy (plug->grabbed_keys);
 502       plug->grabbed_keys = NULL;
 503     }
 504
 505   G_OBJECT_CLASS (gtk_plug_parent_class)->finalize (object);
 506 }
 507
 508 static void
 509 gtk_plug_unrealize (GtkWidget *widget)
 510 {
 511   GtkPlug *plug = GTK_PLUG (widget);
 512
 513   if (plug->socket_window != NULL)
 514     {
 515       gdk_window_set_user_data (plug->socket_window, NULL);
 516       g_object_unref (plug->socket_window);
 517       plug->socket_window = NULL;
 518
 519       g_object_notify (G_OBJECT (widget), "embedded");
 520     }
 521
 522   if (!plug->same_app)
 523     {
 524       if (plug->modality_window)
 525         _gtk_plug_handle_modality_off (plug);
 526
 527       gtk_window_group_remove_window (plug->modality_group, GTK_WINDOW (plug));
 528       g_object_unref (plug->modality_group);
 529     }
 530
 531   if (GTK_WIDGET_CLASS (gtk_plug_parent_class)->unrealize)
 532     (* GTK_WIDGET_CLASS (gtk_plug_parent_class)->unrealize) (widget);
 533 }
 534
 535 static void
 536 gtk_plug_realize (GtkWidget *widget)
 537 {
 538   GtkWindow *window = GTK_WINDOW (widget);
 539   GtkPlug *plug = GTK_PLUG (widget);
 540   GdkWindowAttr attributes;
 541   gint attributes_mask;
 542
 543   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 544
 545   attributes.window_type = GDK_WINDOW_CHILD;    /* XXX GDK_WINDOW_PLUG ? */
 546   attributes.title = window->title;
 547   attributes.wmclass_name = window->wmclass_name;
 548   attributes.wmclass_class = window->wmclass_class;
 549   attributes.width = widget->allocation.width;
 550   attributes.height = widget->allocation.height;
 551   attributes.wclass = GDK_INPUT_OUTPUT;
 552
 553   /* this isn't right - we should match our parent's visual/colormap.
 554    * though that will require handling "foreign" colormaps */
 555   attributes.visual = gtk_widget_get_visual (widget);
 556   attributes.colormap = gtk_widget_get_colormap (widget);
 557   attributes.event_mask = gtk_widget_get_events (widget);
 558   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 559                             GDK_KEY_PRESS_MASK |
 560                             GDK_KEY_RELEASE_MASK |
 561                             GDK_ENTER_NOTIFY_MASK |
 562                             GDK_LEAVE_NOTIFY_MASK |
 563                             GDK_STRUCTURE_MASK);
 564
 565   attributes_mask = GDK_WA_VISUAL | GDK_WA_COLORMAP;
 566   attributes_mask |= (window->title ? GDK_WA_TITLE : 0);
 567   attributes_mask |= (window->wmclass_name ? GDK_WA_WMCLASS : 0);
 568
 569   if (GTK_WIDGET_TOPLEVEL (widget))
 570     {
 571       attributes.window_type = GDK_WINDOW_TOPLEVEL;
 572
 573       gdk_error_trap_push ();
 574       if (plug->socket_window)
 575         widget->window = gdk_window_new (plug->socket_window,
 576                                          &attributes, attributes_mask);
 577       else /* If it's a passive plug, we use the root window */
 578         widget->window = gdk_window_new (gtk_widget_get_root_window (widget),
 579                                          &attributes, attributes_mask);
 580
 581       gdk_display_sync (gtk_widget_get_display (widget));
 582       if (gdk_error_trap_pop ()) /* Uh-oh */
 583         {
 584           gdk_error_trap_push ();
 585           gdk_window_destroy (widget->window);
 586           gdk_flush ();
 587           gdk_error_trap_pop ();
 588           widget->window = gdk_window_new (gtk_widget_get_root_window (widget),
 589                                            &attributes, attributes_mask);
 590         }
 591
 592       gdk_window_add_filter (widget->window,
 593                              _gtk_plug_windowing_filter_func,
 594                              widget);
 595
 596       plug->modality_group = gtk_window_group_new ();
 597       gtk_window_group_add_window (plug->modality_group, window);
 598
 599       _gtk_plug_windowing_realize_toplevel (plug);
 600     }
 601   else
 602     widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 603                                      &attributes, attributes_mask);
 604
 605   gdk_window_set_user_data (widget->window, window);
 606
 607   widget->style = gtk_style_attach (widget->style, widget->window);
 608   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 609
 610   gdk_window_enable_synchronized_configure (widget->window);
 611 }
 612
 613 static void
 614 gtk_plug_show (GtkWidget *widget)
 615 {
 616   if (GTK_WIDGET_TOPLEVEL (widget))
 617     GTK_WIDGET_CLASS (gtk_plug_parent_class)->show (widget);
 618   else
 619     GTK_WIDGET_CLASS (bin_class)->show (widget);
 620 }
 621
 622 static void
 623 gtk_plug_hide (GtkWidget *widget)
 624 {
 625   if (GTK_WIDGET_TOPLEVEL (widget))
 626     GTK_WIDGET_CLASS (gtk_plug_parent_class)->hide (widget);
 627   else
 628     GTK_WIDGET_CLASS (bin_class)->hide (widget);
 629 }
 630
 631 /* From gdkinternals.h */
 632 void gdk_synthesize_window_state (GdkWindow     *window,
 633                                   GdkWindowState unset_flags,
 634                                   GdkWindowState set_flags);
 635
 636 static void
 637 gtk_plug_map (GtkWidget *widget)
 638 {
 639   if (GTK_WIDGET_TOPLEVEL (widget))
 640     {
 641       GtkBin *bin = GTK_BIN (widget);
 642       GtkPlug *plug = GTK_PLUG (widget);
 643
 644       GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 645
 646       if (bin->child &&
 647           GTK_WIDGET_VISIBLE (bin->child) &&
 648           !GTK_WIDGET_MAPPED (bin->child))
 649         gtk_widget_map (bin->child);
 650
 651       _gtk_plug_windowing_map_toplevel (plug);
 652
 653       gdk_synthesize_window_state (widget->window,
 654                                    GDK_WINDOW_STATE_WITHDRAWN,
 655                                    0);
 656     }
 657   else
 658     GTK_WIDGET_CLASS (bin_class)->map (widget);
 659 }
 660
 661 static void
 662 gtk_plug_unmap (GtkWidget *widget)
 663 {
 664   if (GTK_WIDGET_TOPLEVEL (widget))
 665     {
 666       GtkPlug *plug = GTK_PLUG (widget);
 667
 668       GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 669
 670       gdk_window_hide (widget->window);
 671
 672       _gtk_plug_windowing_unmap_toplevel (plug);
 673
 674       gdk_synthesize_window_state (widget->window,
 675                                    0,
 676                                    GDK_WINDOW_STATE_WITHDRAWN);
 677     }
 678   else
 679     GTK_WIDGET_CLASS (bin_class)->unmap (widget);
 680 }
 681
 682 static void
 683 gtk_plug_size_allocate (GtkWidget     *widget,
 684                         GtkAllocation *allocation)
 685 {
 686   if (GTK_WIDGET_TOPLEVEL (widget))
 687     GTK_WIDGET_CLASS (gtk_plug_parent_class)->size_allocate (widget, allocation);
 688   else
 689     {
 690       GtkBin *bin = GTK_BIN (widget);
 691
 692       widget->allocation = *allocation;
 693
 694       if (GTK_WIDGET_REALIZED (widget))
 695         gdk_window_move_resize (widget->window,
 696                                 allocation->x, allocation->y,
 697                                 allocation->width, allocation->height);
 698
 699       if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 700         {
 701           GtkAllocation child_allocation;
 702
 703           child_allocation.x = child_allocation.y = GTK_CONTAINER (widget)->border_width;
 704           child_allocation.width =
 705             MAX (1, (gint)allocation->width - child_allocation.x * 2);
 706           child_allocation.height =
 707             MAX (1, (gint)allocation->height - child_allocation.y * 2);
 708
 709           gtk_widget_size_allocate (bin->child, &child_allocation);
 710         }
 711
 712     }
 713 }
 714
 715 static gboolean
 716 gtk_plug_key_press_event (GtkWidget   *widget,
 717                           GdkEventKey *event)
 718 {
 719   if (GTK_WIDGET_TOPLEVEL (widget))
 720     return GTK_WIDGET_CLASS (gtk_plug_parent_class)->key_press_event (widget, event);
 721   else
 722     return FALSE;
 723 }
 724
 725 static gboolean
 726 gtk_plug_focus_event (GtkWidget      *widget,
 727                       GdkEventFocus  *event)
 728 {
 729   /* We eat focus-in events and focus-out events, since they
 730    * can be generated by something like a keyboard grab on
 731    * a child of the plug.
 732    */
 733   return FALSE;
 734 }
 735
 736 static void
 737 gtk_plug_set_focus (GtkWindow *window,
 738                     GtkWidget *focus)
 739 {
 740   GtkPlug *plug = GTK_PLUG (window);
 741
 742   GTK_WINDOW_CLASS (gtk_plug_parent_class)->set_focus (window, focus);
 743
 744   /* Ask for focus from embedder
 745    */
 746
 747   if (focus && !window->has_toplevel_focus)
 748     _gtk_plug_windowing_set_focus (plug);
 749 }
 750
 751 static guint
 752 grabbed_key_hash (gconstpointer a)
 753 {
 754   const GrabbedKey *key = a;
 755   guint h;
 756
 757   h = key->accelerator_key << 16;
 758   h ^= key->accelerator_key >> 16;
 759   h ^= key->accelerator_mods;
 760
 761   return h;
 762 }
 763
 764 static gboolean
 765 grabbed_key_equal (gconstpointer a, gconstpointer b)
 766 {
 767   const GrabbedKey *keya = a;
 768   const GrabbedKey *keyb = b;
 769
 770   return (keya->accelerator_key == keyb->accelerator_key &&
 771           keya->accelerator_mods == keyb->accelerator_mods);
 772 }
 773
 774 static void
 775 add_grabbed_key (gpointer key, gpointer val, gpointer data)
 776 {
 777   GrabbedKey *grabbed_key = key;
 778   GtkPlug *plug = data;
 779
 780   if (!plug->grabbed_keys ||
 781       !g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
 782     {
 783       _gtk_plug_windowing_add_grabbed_key (plug,
 784                                            grabbed_key->accelerator_key,
 785                                            grabbed_key->accelerator_mods);
 786     }
 787 }
 788
 789 static void
 790 add_grabbed_key_always (gpointer key,
 791                         gpointer val,
 792                         gpointer data)
 793 {
 794   GrabbedKey *grabbed_key = key;
 795   GtkPlug *plug = data;
 796
 797   _gtk_plug_windowing_add_grabbed_key (plug,
 798                                        grabbed_key->accelerator_key,
 799                                        grabbed_key->accelerator_mods);
 800 }
 801
 802 /**
 803  * _gtk_plug_add_all_grabbed_keys:
 804  *
 805  * @plug: a #GtkPlug
 806  *
 807  * Calls _gtk_plug_windowing_add_grabbed_key() on all the grabbed keys
 808  * in the @plug.
 809  */
 810 void
 811 _gtk_plug_add_all_grabbed_keys (GtkPlug *plug)
 812 {
 813   if (plug->grabbed_keys)
 814     g_hash_table_foreach (plug->grabbed_keys, add_grabbed_key_always, plug);
 815 }
 816
 817 static void
 818 remove_grabbed_key (gpointer key, gpointer val, gpointer data)
 819 {
 820   GrabbedKey *grabbed_key = key;
 821   GtkPlug *plug = data;
 822
 823   if (!plug->grabbed_keys ||
 824       !g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
 825     {
 826       _gtk_plug_windowing_remove_grabbed_key (plug,
 827                                               grabbed_key->accelerator_key,
 828                                               grabbed_key->accelerator_mods);
 829     }
 830 }
 831
 832 static void
 833 keys_foreach (GtkWindow      *window,
 834               guint           keyval,
 835               GdkModifierType modifiers,
 836               gboolean        is_mnemonic,
 837               gpointer        data)
 838 {
 839   GHashTable *new_grabbed_keys = data;
 840   GrabbedKey *key = g_slice_new (GrabbedKey);
 841
 842   key->accelerator_key = keyval;
 843   key->accelerator_mods = modifiers;
 844
 845   g_hash_table_replace (new_grabbed_keys, key, key);
 846 }
 847
 848 static void
 849 grabbed_key_free (gpointer data)
 850 {
 851   g_slice_free (GrabbedKey, data);
 852 }
 853
 854 static void
 855 gtk_plug_keys_changed (GtkWindow *window)
 856 {
 857   GHashTable *new_grabbed_keys, *old_grabbed_keys;
 858   GtkPlug *plug = GTK_PLUG (window);
 859
 860   new_grabbed_keys = g_hash_table_new_full (grabbed_key_hash, grabbed_key_equal, (GDestroyNotify)grabbed_key_free, NULL);
 861   _gtk_window_keys_foreach (window, keys_foreach, new_grabbed_keys);
 862
 863   if (plug->socket_window)
 864     g_hash_table_foreach (new_grabbed_keys, add_grabbed_key, plug);
 865
 866   old_grabbed_keys = plug->grabbed_keys;
 867   plug->grabbed_keys = new_grabbed_keys;
 868
 869   if (old_grabbed_keys)
 870     {
 871       if (plug->socket_window)
 872         g_hash_table_foreach (old_grabbed_keys, remove_grabbed_key, plug);
 873       g_hash_table_destroy (old_grabbed_keys);
 874     }
 875 }
 876
 877 static gboolean
 878 gtk_plug_focus (GtkWidget        *widget,
 879                 GtkDirectionType  direction)
 880 {
 881   GtkBin *bin = GTK_BIN (widget);
 882   GtkPlug *plug = GTK_PLUG (widget);
 883   GtkWindow *window = GTK_WINDOW (widget);
 884   GtkContainer *container = GTK_CONTAINER (widget);
 885   GtkWidget *old_focus_child = container->focus_child;
 886   GtkWidget *parent;
 887
 888   /* We override GtkWindow's behavior, since we don't want wrapping here.
 889    */
 890   if (old_focus_child)
 891     {
 892       if (gtk_widget_child_focus (old_focus_child, direction))
 893         return TRUE;
 894
 895       if (window->focus_widget)
 896         {
 897           /* Wrapped off the end, clear the focus setting for the toplevel */
 898           parent = window->focus_widget->parent;
 899           while (parent)
 900             {
 901               gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 902               parent = GTK_WIDGET (parent)->parent;
 903             }
 904
 905           gtk_window_set_focus (GTK_WINDOW (container), NULL);
 906         }
 907     }
 908   else
 909     {
 910       /* Try to focus the first widget in the window */
 911       if (bin->child && gtk_widget_child_focus (bin->child, direction))
 912         return TRUE;
 913     }
 914
 915   if (!GTK_CONTAINER (window)->focus_child)
 916     _gtk_plug_windowing_focus_to_parent (plug, direction);
 917
 918   return FALSE;
 919 }
 920
 921 static void
 922 gtk_plug_check_resize (GtkContainer *container)
 923 {
 924   if (GTK_WIDGET_TOPLEVEL (container))
 925     GTK_CONTAINER_CLASS (gtk_plug_parent_class)->check_resize (container);
 926   else
 927     GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
 928 }
 929
 930 /**
 931  * _gtk_plug_handle_modality_on:
 932  *
 933  * @plug: a #GtkPlug
 934  *
 935  * Called from the GtkPlug backend when the corresponding socket has
 936  * told the plug that it modality has toggled on.
 937  */
 938 void
 939 _gtk_plug_handle_modality_on (GtkPlug *plug)
 940 {
 941   if (!plug->modality_window)
 942     {
 943       plug->modality_window = gtk_window_new (GTK_WINDOW_POPUP);
 944       gtk_window_set_screen (GTK_WINDOW (plug->modality_window),
 945                              gtk_widget_get_screen (GTK_WIDGET (plug)));
 946       gtk_widget_realize (plug->modality_window);
 947       gtk_window_group_add_window (plug->modality_group, GTK_WINDOW (plug->modality_window));
 948       gtk_grab_add (plug->modality_window);
 949     }
 950 }
 951
 952 /**
 953  * _gtk_plug_handle_modality_off:
 954  *
 955  * @plug: a #GtkPlug
 956  *
 957  * Called from the GtkPlug backend when the corresponding socket has
 958  * told the plug that it modality has toggled off.
 959  */
 960 void
 961 _gtk_plug_handle_modality_off (GtkPlug *plug)
 962 {
 963   if (plug->modality_window)
 964     {
 965       gtk_widget_destroy (plug->modality_window);
 966       plug->modality_window = NULL;
 967     }
 968 }
 969
 970 /**
 971  * _gtk_plug_focus_first_last:
 972  *
 973  * @plug: a #GtkPlug
 974  * @direction: a direction
 975  *
 976  * Called from the GtkPlug backend when the corresponding socket has
 977  * told the plug that it has received the focus.
 978  */
 979 void
 980 _gtk_plug_focus_first_last (GtkPlug          *plug,
 981                             GtkDirectionType  direction)
 982 {
 983   GtkWindow *window = GTK_WINDOW (plug);
 984   GtkWidget *parent;
 985
 986   if (window->focus_widget)
 987     {
 988       parent = window->focus_widget->parent;
 989       while (parent)
 990         {
 991           gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 992           parent = GTK_WIDGET (parent)->parent;
 993         }
 994
 995       gtk_window_set_focus (GTK_WINDOW (plug), NULL);
 996     }
 997
 998   gtk_widget_child_focus (GTK_WIDGET (plug), direction);
 999 }
1000
1001 #define __GTK_PLUG_C__
1002 #include "gtkaliasdef.c"