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 #include "gtksocketprivate.h"
  37 #include "gtkwidgetprivate.h"
  38 #include "gtkwindowprivate.h"
  39
  40 #include <gdk/gdkx.h>
  41
  42 /**
  43  * SECTION:gtkplug
  44  * @Short_description: Toplevel for embedding into other processes
  45  * @Title: GtkPlug
  46  * @See_also: #GtkSocket
  47  *
  48  * Together with #GtkSocket, #GtkPlug provides the ability
  49  * to embed widgets from one process into another process
  50  * in a fashion that is transparent to the user. One
  51  * process creates a #GtkSocket widget and passes the
  52  * ID of that widget's window to the other process,
  53  * which then creates a #GtkPlug with that window ID.
  54  * Any widgets contained in the #GtkPlug then will appear
  55  * inside the first application's window.
  56  *
  57  * The communication between a #GtkSocket and a #GtkPlug follows the
  58  * <ulink url="http://www.freedesktop.org/Standards/xembed-spec">XEmbed</ulink>
  59  * protocol. This protocol has also been implemented in other toolkits, e.g.
  60  * <application>Qt</application>, allowing the same level of integration
  61  * when embedding a <application>Qt</application> widget in GTK or vice versa.
  62  *
  63  * <note>
  64  * The #GtkPlug and #GtkSocket widgets are only available when GTK is
  65  * compiled for the X11 platform and %GDK_WINDOWING_X11 is defined.
  66  * They can only be used on a #GdkX11Display.
  67  * </note>
  68  */
  69
  70 static void            gtk_plug_get_property          (GObject     *object,
  71                                                        guint        prop_id,
  72                                                        GValue      *value,
  73                                                        GParamSpec  *pspec);
  74 static void            gtk_plug_finalize              (GObject          *object);
  75 static void            gtk_plug_realize               (GtkWidget        *widget);
  76 static void            gtk_plug_unrealize             (GtkWidget        *widget);
  77 static void            gtk_plug_show                  (GtkWidget        *widget);
  78 static void            gtk_plug_hide                  (GtkWidget        *widget);
  79 static void            gtk_plug_map                   (GtkWidget        *widget);
  80 static void            gtk_plug_unmap                 (GtkWidget        *widget);
  81 static void            gtk_plug_size_allocate         (GtkWidget        *widget,
  82                                                        GtkAllocation    *allocation);
  83 static gboolean        gtk_plug_key_press_event       (GtkWidget        *widget,
  84                                                        GdkEventKey      *event);
  85 static gboolean        gtk_plug_focus_event           (GtkWidget        *widget,
  86                                                        GdkEventFocus    *event);
  87 static void            gtk_plug_set_focus             (GtkWindow        *window,
  88                                                        GtkWidget        *focus);
  89 static gboolean        gtk_plug_focus                 (GtkWidget        *widget,
  90                                                        GtkDirectionType  direction);
  91 static void            gtk_plug_check_resize          (GtkContainer     *container);
  92 static void            gtk_plug_keys_changed          (GtkWindow        *window);
  93
  94 static GtkBinClass *bin_class = NULL;
  95
  96 typedef struct
  97 {
  98   guint                  accelerator_key;
  99   GdkModifierType        accelerator_mods;
 100 } GrabbedKey;
 101
 102 enum {
 103   PROP_0,
 104   PROP_EMBEDDED,
 105   PROP_SOCKET_WINDOW
 106 };
 107
 108 enum {
 109   EMBEDDED,
 110   LAST_SIGNAL
 111 };
 112
 113 static guint plug_signals[LAST_SIGNAL] = { 0 };
 114
 115 G_DEFINE_TYPE (GtkPlug, gtk_plug, GTK_TYPE_WINDOW)
 116
 117 static void
 118 gtk_plug_get_property (GObject    *object,
 119                        guint       prop_id,
 120                        GValue     *value,
 121                        GParamSpec *pspec)
 122 {
 123   GtkPlug *plug = GTK_PLUG (object);
 124   GtkPlugPrivate *priv = plug->priv;
 125
 126   switch (prop_id)
 127     {
 128     case PROP_EMBEDDED:
 129       g_value_set_boolean (value, priv->socket_window != NULL);
 130       break;
 131     case PROP_SOCKET_WINDOW:
 132       g_value_set_object (value, priv->socket_window);
 133       break;
 134     default:
 135       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 136       break;
 137     }
 138 }
 139
 140 static void
 141 gtk_plug_class_init (GtkPlugClass *class)
 142 {
 143   GObjectClass *gobject_class = (GObjectClass *)class;
 144   GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
 145   GtkWindowClass *window_class = (GtkWindowClass *)class;
 146   GtkContainerClass *container_class = (GtkContainerClass *)class;
 147
 148   bin_class = g_type_class_peek (GTK_TYPE_BIN);
 149
 150   gobject_class->get_property = gtk_plug_get_property;
 151   gobject_class->finalize = gtk_plug_finalize;
 152
 153   widget_class->realize = gtk_plug_realize;
 154   widget_class->unrealize = gtk_plug_unrealize;
 155   widget_class->key_press_event = gtk_plug_key_press_event;
 156   widget_class->focus_in_event = gtk_plug_focus_event;
 157   widget_class->focus_out_event = gtk_plug_focus_event;
 158
 159   widget_class->show = gtk_plug_show;
 160   widget_class->hide = gtk_plug_hide;
 161   widget_class->map = gtk_plug_map;
 162   widget_class->unmap = gtk_plug_unmap;
 163   widget_class->size_allocate = gtk_plug_size_allocate;
 164
 165   widget_class->focus = gtk_plug_focus;
 166
 167   container_class->check_resize = gtk_plug_check_resize;
 168
 169   window_class->set_focus = gtk_plug_set_focus;
 170   window_class->keys_changed = gtk_plug_keys_changed;
 171
 172   /**
 173    * GtkPlug:embedded:
 174    *
 175    * %TRUE if the plug is embedded in a socket.
 176    *
 177    * Since: 2.12
 178    */
 179   g_object_class_install_property (gobject_class,
 180                                    PROP_EMBEDDED,
 181                                    g_param_spec_boolean ("embedded",
 182                                                          P_("Embedded"),
 183                                                          P_("Whether the plug is embedded"),
 184                                                          FALSE,
 185                                                          GTK_PARAM_READABLE));
 186
 187   /**
 188    * GtkPlug:socket-window:
 189    *
 190    * The window of the socket the plug is embedded in.
 191    *
 192    * Since: 2.14
 193    */
 194   g_object_class_install_property (gobject_class,
 195                                    PROP_SOCKET_WINDOW,
 196                                    g_param_spec_object ("socket-window",
 197                                                         P_("Socket Window"),
 198                                                         P_("The window of the socket the plug is embedded in"),
 199                                                         GDK_TYPE_WINDOW,
 200                                                         GTK_PARAM_READABLE));
 201
 202   /**
 203    * GtkPlug::embedded:
 204    * @plug: the object on which the signal was emitted
 205    *
 206    * Gets emitted when the plug becomes embedded in a socket.
 207    */
 208   plug_signals[EMBEDDED] =
 209     g_signal_new (I_("embedded"),
 210                   G_OBJECT_CLASS_TYPE (class),
 211                   G_SIGNAL_RUN_LAST,
 212                   G_STRUCT_OFFSET (GtkPlugClass, embedded),
 213                   NULL, NULL,
 214                   _gtk_marshal_VOID__VOID,
 215                   G_TYPE_NONE, 0);
 216
 217   g_type_class_add_private (class, sizeof (GtkPlugPrivate));
 218 }
 219
 220 static void
 221 gtk_plug_init (GtkPlug *plug)
 222 {
 223   plug->priv = G_TYPE_INSTANCE_GET_PRIVATE (plug,
 224                                             GTK_TYPE_PLUG,
 225                                             GtkPlugPrivate);
 226 }
 227
 228 static void
 229 gtk_plug_set_is_child (GtkPlug  *plug,
 230                        gboolean  is_child)
 231 {
 232   GtkPlugPrivate *priv = plug->priv;
 233   GtkWidget *widget = GTK_WIDGET (plug);
 234
 235   g_assert (!gtk_widget_get_parent (widget));
 236
 237   if (is_child)
 238     {
 239       if (priv->modality_window)
 240         _gtk_plug_handle_modality_off (plug);
 241
 242       if (priv->modality_group)
 243         {
 244           gtk_window_group_remove_window (priv->modality_group, GTK_WINDOW (plug));
 245           g_object_unref (priv->modality_group);
 246           priv->modality_group = NULL;
 247         }
 248
 249       /* As a toplevel, the MAPPED flag doesn't correspond
 250        * to whether the widget->window is mapped; we unmap
 251        * here, but don't bother remapping -- we will get mapped
 252        * by gtk_widget_set_parent ().
 253        */
 254       if (gtk_widget_get_mapped (widget))
 255         gtk_widget_unmap (widget);
 256
 257       _gtk_window_set_is_toplevel (GTK_WINDOW (plug), FALSE);
 258       gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_PARENT);
 259
 260       _gtk_widget_propagate_hierarchy_changed (widget, widget);
 261     }
 262   else
 263     {
 264       if (gtk_window_get_focus (GTK_WINDOW (plug)))
 265         gtk_window_set_focus (GTK_WINDOW (plug), NULL);
 266       if (gtk_window_get_default_widget (GTK_WINDOW (plug)))
 267         gtk_window_set_default (GTK_WINDOW (plug), NULL);
 268
 269       priv->modality_group = gtk_window_group_new ();
 270       gtk_window_group_add_window (priv->modality_group, GTK_WINDOW (plug));
 271
 272       _gtk_window_set_is_toplevel (GTK_WINDOW (plug), TRUE);
 273       gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_QUEUE);
 274
 275       _gtk_widget_propagate_hierarchy_changed (GTK_WIDGET (plug), NULL);
 276     }
 277 }
 278
 279 /**
 280  * gtk_plug_get_id:
 281  * @plug: a #GtkPlug.
 282  *
 283  * Gets the window ID of a #GtkPlug widget, which can then
 284  * be used to embed this window inside another window, for
 285  * instance with gtk_socket_add_id().
 286  *
 287  * Return value: the window ID for the plug
 288  **/
 289 GdkNativeWindow
 290 gtk_plug_get_id (GtkPlug *plug)
 291 {
 292   g_return_val_if_fail (GTK_IS_PLUG (plug), 0);
 293
 294   if (!gtk_widget_get_realized (GTK_WIDGET (plug)))
 295     gtk_widget_realize (GTK_WIDGET (plug));
 296
 297   return _gtk_plug_windowing_get_id (plug);
 298 }
 299
 300 /**
 301  * gtk_plug_get_embedded:
 302  * @plug: a #GtkPlug
 303  *
 304  * Determines whether the plug is embedded in a socket.
 305  *
 306  * Return value: %TRUE if the plug is embedded in a socket
 307  *
 308  * Since: 2.14
 309  **/
 310 gboolean
 311 gtk_plug_get_embedded (GtkPlug *plug)
 312 {
 313   g_return_val_if_fail (GTK_IS_PLUG (plug), FALSE);
 314
 315   return plug->priv->socket_window != NULL;
 316 }
 317
 318 /**
 319  * gtk_plug_get_socket_window:
 320  * @plug: a #GtkPlug
 321  *
 322  * Retrieves the socket the plug is embedded in.
 323  *
 324  * Return value: (transfer none): the window of the socket, or %NULL
 325  *
 326  * Since: 2.14
 327  **/
 328 GdkWindow *
 329 gtk_plug_get_socket_window (GtkPlug *plug)
 330 {
 331   g_return_val_if_fail (GTK_IS_PLUG (plug), NULL);
 332
 333   return plug->priv->socket_window;
 334 }
 335
 336 /**
 337  * _gtk_plug_add_to_socket:
 338  * @plug: a #GtkPlug
 339  * @socket_: a #GtkSocket
 340  *
 341  * Adds a plug to a socket within the same application.
 342  **/
 343 void
 344 _gtk_plug_add_to_socket (GtkPlug   *plug,
 345                          GtkSocket *socket_)
 346 {
 347   GtkPlugPrivate *priv;
 348   GtkWidget *widget;
 349
 350   g_return_if_fail (GTK_IS_PLUG (plug));
 351   g_return_if_fail (GTK_IS_SOCKET (socket_));
 352   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (socket_)));
 353
 354   priv = plug->priv;
 355   widget = GTK_WIDGET (plug);
 356
 357   gtk_plug_set_is_child (plug, TRUE);
 358   priv->same_app = TRUE;
 359   socket_->priv->same_app = TRUE;
 360   socket_->priv->plug_widget = widget;
 361
 362   priv->socket_window = gtk_widget_get_window (GTK_WIDGET (socket_));
 363   g_object_ref (priv->socket_window);
 364   g_signal_emit (plug, plug_signals[EMBEDDED], 0);
 365   g_object_notify (G_OBJECT (plug), "embedded");
 366
 367   if (gtk_widget_get_realized (widget))
 368     {
 369       GdkWindow *window;
 370
 371       window = gtk_widget_get_window (widget);
 372       gdk_window_reparent (window, priv->socket_window,
 373                            -gdk_window_get_width (window),
 374                            -gdk_window_get_height (window));
 375     }
 376
 377   gtk_widget_set_parent (widget, GTK_WIDGET (socket_));
 378
 379   g_signal_emit_by_name (socket_, "plug-added");
 380 }
 381
 382 /**
 383  * _gtk_plug_send_delete_event:
 384  * @widget: a #GtkWidget
 385  *
 386  * Send a GDK_DELETE event to the @widget and destroy it if
 387  * necessary. Internal GTK function, called from this file or the
 388  * backend-specific GtkPlug implementation.
 389  */
 390 void
 391 _gtk_plug_send_delete_event (GtkWidget *widget)
 392 {
 393   GdkEvent *event = gdk_event_new (GDK_DELETE);
 394
 395   event->any.window = g_object_ref (gtk_widget_get_window (widget));
 396   event->any.send_event = FALSE;
 397
 398   g_object_ref (widget);
 399
 400   if (!gtk_widget_event (widget, event))
 401     gtk_widget_destroy (widget);
 402
 403   g_object_unref (widget);
 404
 405   gdk_event_free (event);
 406 }
 407
 408 /**
 409  * _gtk_plug_remove_from_socket:
 410  * @plug: a #GtkPlug
 411  * @socket_: a #GtkSocket
 412  *
 413  * Removes a plug from a socket within the same application.
 414  **/
 415 void
 416 _gtk_plug_remove_from_socket (GtkPlug   *plug,
 417                               GtkSocket *socket_)
 418 {
 419   GtkPlugPrivate *priv;
 420   GtkWidget *widget;
 421   GdkWindow *window;
 422   gboolean result;
 423   gboolean widget_was_visible;
 424
 425   g_return_if_fail (GTK_IS_PLUG (plug));
 426   g_return_if_fail (GTK_IS_SOCKET (socket_));
 427   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (plug)));
 428
 429   priv = plug->priv;
 430   widget = GTK_WIDGET (plug);
 431
 432   if (_gtk_widget_get_in_reparent (widget))
 433     return;
 434
 435   g_object_ref (plug);
 436   g_object_ref (socket_);
 437
 438   widget_was_visible = gtk_widget_get_visible (widget);
 439   window = gtk_widget_get_window (widget);
 440
 441   gdk_window_hide (window);
 442   _gtk_widget_set_in_reparent (widget, TRUE);
 443   gdk_window_reparent (window,
 444                        gtk_widget_get_root_window (widget),
 445                        0, 0);
 446   gtk_widget_unparent (GTK_WIDGET (plug));
 447   _gtk_widget_set_in_reparent (widget, FALSE);
 448
 449   socket_->priv->plug_widget = NULL;
 450   if (socket_->priv->plug_window != NULL)
 451     {
 452       g_object_unref (socket_->priv->plug_window);
 453       socket_->priv->plug_window = NULL;
 454     }
 455
 456   socket_->priv->same_app = FALSE;
 457
 458   priv->same_app = FALSE;
 459   if (priv->socket_window != NULL)
 460     {
 461       g_object_unref (priv->socket_window);
 462       priv->socket_window = NULL;
 463     }
 464   gtk_plug_set_is_child (plug, FALSE);
 465
 466   g_signal_emit_by_name (socket_, "plug-removed", &result);
 467   if (!result)
 468     gtk_widget_destroy (GTK_WIDGET (socket_));
 469
 470   if (window)
 471     _gtk_plug_send_delete_event (widget);
 472
 473   g_object_unref (plug);
 474
 475   if (widget_was_visible && gtk_widget_get_visible (GTK_WIDGET (socket_)))
 476     gtk_widget_queue_resize (GTK_WIDGET (socket_));
 477
 478   g_object_unref (socket_);
 479 }
 480
 481 /**
 482  * gtk_plug_construct:
 483  * @plug: a #GtkPlug.
 484  * @socket_id: the XID of the socket's window.
 485  *
 486  * Finish the initialization of @plug for a given #GtkSocket identified by
 487  * @socket_id. This function will generally only be used by classes deriving from #GtkPlug.
 488  **/
 489 void
 490 gtk_plug_construct (GtkPlug         *plug,
 491                     GdkNativeWindow  socket_id)
 492 {
 493   gtk_plug_construct_for_display (plug, gdk_display_get_default (), socket_id);
 494 }
 495
 496 /**
 497  * gtk_plug_construct_for_display:
 498  * @plug: a #GtkPlug.
 499  * @display: the #GdkDisplay associated with @socket_id's
 500  *           #GtkSocket.
 501  * @socket_id: the XID of the socket's window.
 502  *
 503  * Finish the initialization of @plug for a given #GtkSocket identified by
 504  * @socket_id which is currently displayed on @display.
 505  * This function will generally only be used by classes deriving from #GtkPlug.
 506  *
 507  * Since: 2.2
 508  **/
 509 void
 510 gtk_plug_construct_for_display (GtkPlug         *plug,
 511                                 GdkDisplay      *display,
 512                                 GdkNativeWindow  socket_id)
 513 {
 514   GtkPlugPrivate *priv;
 515
 516   g_return_if_fail (GTK_IS_PLUG (plug));
 517   g_return_if_fail (GDK_IS_DISPLAY (display));
 518
 519   priv = plug->priv;
 520
 521   if (socket_id)
 522     {
 523       gpointer user_data = NULL;
 524
 525       if (GDK_IS_X11_DISPLAY (display))
 526         priv->socket_window = gdk_x11_window_lookup_for_display (display, socket_id);
 527       else
 528         priv->socket_window = NULL;
 529
 530       if (priv->socket_window)
 531         {
 532           gdk_window_get_user_data (priv->socket_window, &user_data);
 533
 534           if (user_data)
 535             {
 536               if (GTK_IS_SOCKET (user_data))
 537                 _gtk_plug_add_to_socket (plug, user_data);
 538               else
 539                 {
 540                   g_warning (G_STRLOC "Can't create GtkPlug as child of non-GtkSocket");
 541                   priv->socket_window = NULL;
 542                 }
 543             }
 544           else
 545             g_object_ref (priv->socket_window);
 546         }
 547       else if (GDK_IS_X11_DISPLAY (display))
 548         priv->socket_window = gdk_x11_window_foreign_new_for_display (display, socket_id);
 549
 550       if (priv->socket_window) {
 551         g_signal_emit (plug, plug_signals[EMBEDDED], 0);
 552
 553         g_object_notify (G_OBJECT (plug), "embedded");
 554       }
 555     }
 556 }
 557
 558 /**
 559  * gtk_plug_new:
 560  * @socket_id:  the window ID of the socket, or 0.
 561  *
 562  * Creates a new plug widget inside the #GtkSocket identified
 563  * by @socket_id. If @socket_id is 0, the plug is left "unplugged" and
 564  * can later be plugged into a #GtkSocket by  gtk_socket_add_id().
 565  *
 566  * Return value: the new #GtkPlug widget.
 567  **/
 568 GtkWidget*
 569 gtk_plug_new (GdkNativeWindow socket_id)
 570 {
 571   return gtk_plug_new_for_display (gdk_display_get_default (), socket_id);
 572 }
 573
 574 /**
 575  * gtk_plug_new_for_display:
 576  * @display: the #GdkDisplay on which @socket_id is displayed
 577  * @socket_id: the XID of the socket's window.
 578  *
 579  * Create a new plug widget inside the #GtkSocket identified by socket_id.
 580  *
 581  * Return value: the new #GtkPlug widget.
 582  *
 583  * Since: 2.2
 584  */
 585 GtkWidget*
 586 gtk_plug_new_for_display (GdkDisplay      *display,
 587                           GdkNativeWindow  socket_id)
 588 {
 589   GtkPlug *plug;
 590
 591   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
 592
 593   plug = g_object_new (GTK_TYPE_PLUG, NULL);
 594   gtk_plug_construct_for_display (plug, display, socket_id);
 595   return GTK_WIDGET (plug);
 596 }
 597
 598 static void
 599 gtk_plug_finalize (GObject *object)
 600 {
 601   GtkPlug *plug = GTK_PLUG (object);
 602   GtkPlugPrivate *priv = plug->priv;
 603
 604   if (priv->grabbed_keys)
 605     {
 606       g_hash_table_destroy (priv->grabbed_keys);
 607       priv->grabbed_keys = NULL;
 608     }
 609
 610   G_OBJECT_CLASS (gtk_plug_parent_class)->finalize (object);
 611 }
 612
 613 static void
 614 gtk_plug_unrealize (GtkWidget *widget)
 615 {
 616   GtkPlug *plug = GTK_PLUG (widget);
 617   GtkPlugPrivate *priv = plug->priv;
 618
 619   if (priv->socket_window != NULL)
 620     {
 621       gdk_window_set_user_data (priv->socket_window, NULL);
 622       g_object_unref (priv->socket_window);
 623       priv->socket_window = NULL;
 624
 625       g_object_notify (G_OBJECT (widget), "embedded");
 626     }
 627
 628   if (!priv->same_app)
 629     {
 630       if (priv->modality_window)
 631         _gtk_plug_handle_modality_off (plug);
 632
 633       gtk_window_group_remove_window (priv->modality_group, GTK_WINDOW (plug));
 634       g_object_unref (priv->modality_group);
 635     }
 636
 637   GTK_WIDGET_CLASS (gtk_plug_parent_class)->unrealize (widget);
 638 }
 639
 640 static void
 641 gtk_plug_realize (GtkWidget *widget)
 642 {
 643   GtkAllocation allocation;
 644   GtkPlug *plug = GTK_PLUG (widget);
 645   GtkPlugPrivate *priv = plug->priv;
 646   GtkWindow *window = GTK_WINDOW (widget);
 647   GdkWindow *gdk_window;
 648   GdkWindowAttr attributes;
 649   const gchar *title;
 650   gchar *wmclass_name, *wmclass_class;
 651   gint attributes_mask;
 652
 653   gtk_widget_set_realized (widget, TRUE);
 654
 655   title = gtk_window_get_title (window);
 656   _gtk_window_get_wmclass (window, &wmclass_name, &wmclass_class);
 657   gtk_widget_get_allocation (widget, &allocation);
 658
 659   attributes.window_type = GDK_WINDOW_CHILD;    /* XXX GDK_WINDOW_PLUG ? */
 660   attributes.title = (gchar *) title;
 661   attributes.wmclass_name = wmclass_name;
 662   attributes.wmclass_class = wmclass_class;
 663   attributes.width = allocation.width;
 664   attributes.height = allocation.height;
 665   attributes.wclass = GDK_INPUT_OUTPUT;
 666
 667   /* this isn't right - we should match our parent's visual/colormap.
 668    * though that will require handling "foreign" colormaps */
 669   attributes.visual = gtk_widget_get_visual (widget);
 670   attributes.event_mask = gtk_widget_get_events (widget);
 671   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 672                             GDK_KEY_PRESS_MASK |
 673                             GDK_KEY_RELEASE_MASK |
 674                             GDK_ENTER_NOTIFY_MASK |
 675                             GDK_LEAVE_NOTIFY_MASK |
 676                             GDK_STRUCTURE_MASK);
 677
 678   attributes_mask = GDK_WA_VISUAL;
 679   attributes_mask |= (title ? GDK_WA_TITLE : 0);
 680   attributes_mask |= (wmclass_name ? GDK_WA_WMCLASS : 0);
 681
 682   if (gtk_widget_is_toplevel (widget))
 683     {
 684       attributes.window_type = GDK_WINDOW_TOPLEVEL;
 685
 686       gdk_error_trap_push ();
 687       if (priv->socket_window)
 688         gdk_window = gdk_window_new (priv->socket_window,
 689                                      &attributes, attributes_mask);
 690       else /* If it's a passive plug, we use the root window */
 691         gdk_window = gdk_window_new (gtk_widget_get_root_window (widget),
 692                                      &attributes, attributes_mask);
 693       gtk_widget_set_window (widget, gdk_window);
 694
 695       gdk_display_sync (gtk_widget_get_display (widget));
 696       if (gdk_error_trap_pop ()) /* Uh-oh */
 697         {
 698           gdk_error_trap_push ();
 699           gdk_window_destroy (gdk_window);
 700           gdk_error_trap_pop_ignored ();
 701           gdk_window = gdk_window_new (gtk_widget_get_root_window (widget),
 702                                    &attributes, attributes_mask);
 703           gtk_widget_set_window (widget, gdk_window);
 704         }
 705
 706       gdk_window_add_filter (gdk_window,
 707                              _gtk_plug_windowing_filter_func,
 708                              widget);
 709
 710       priv->modality_group = gtk_window_group_new ();
 711       gtk_window_group_add_window (priv->modality_group, window);
 712
 713       _gtk_plug_windowing_realize_toplevel (plug);
 714     }
 715   else
 716     {
 717       gdk_window = gdk_window_new (gtk_widget_get_parent_window (widget),
 718                                    &attributes, attributes_mask);
 719       gtk_widget_set_window (widget, gdk_window);
 720     }
 721
 722   gdk_window_set_user_data (gdk_window, window);
 723
 724   gtk_style_context_set_background (gtk_widget_get_style_context (widget),
 725                                     gdk_window);
 726
 727   gdk_window_enable_synchronized_configure (gdk_window);
 728 }
 729
 730 static void
 731 gtk_plug_show (GtkWidget *widget)
 732 {
 733   if (gtk_widget_is_toplevel (widget))
 734     GTK_WIDGET_CLASS (gtk_plug_parent_class)->show (widget);
 735   else
 736     GTK_WIDGET_CLASS (bin_class)->show (widget);
 737 }
 738
 739 static void
 740 gtk_plug_hide (GtkWidget *widget)
 741 {
 742   if (gtk_widget_is_toplevel (widget))
 743     GTK_WIDGET_CLASS (gtk_plug_parent_class)->hide (widget);
 744   else
 745     GTK_WIDGET_CLASS (bin_class)->hide (widget);
 746 }
 747
 748 /* From gdkinternals.h */
 749 void gdk_synthesize_window_state (GdkWindow     *window,
 750                                   GdkWindowState unset_flags,
 751                                   GdkWindowState set_flags);
 752
 753 static void
 754 gtk_plug_map (GtkWidget *widget)
 755 {
 756   if (gtk_widget_is_toplevel (widget))
 757     {
 758       GtkBin *bin = GTK_BIN (widget);
 759       GtkPlug *plug = GTK_PLUG (widget);
 760       GtkWidget *child;
 761
 762       gtk_widget_set_mapped (widget, TRUE);
 763
 764       child = gtk_bin_get_child (bin);
 765       if (child != NULL &&
 766           gtk_widget_get_visible (child) &&
 767           !gtk_widget_get_mapped (child))
 768         gtk_widget_map (child);
 769
 770       _gtk_plug_windowing_map_toplevel (plug);
 771
 772       gdk_synthesize_window_state (gtk_widget_get_window (widget),
 773                                    GDK_WINDOW_STATE_WITHDRAWN,
 774                                    0);
 775     }
 776   else
 777     GTK_WIDGET_CLASS (bin_class)->map (widget);
 778 }
 779
 780 static void
 781 gtk_plug_unmap (GtkWidget *widget)
 782 {
 783   if (gtk_widget_is_toplevel (widget))
 784     {
 785       GtkPlug *plug = GTK_PLUG (widget);
 786       GdkWindow *window;
 787
 788       window = gtk_widget_get_window (widget);
 789
 790       gtk_widget_set_mapped (widget, FALSE);
 791
 792       gdk_window_hide (window);
 793
 794       _gtk_plug_windowing_unmap_toplevel (plug);
 795
 796       gdk_synthesize_window_state (window,
 797                                    0,
 798                                    GDK_WINDOW_STATE_WITHDRAWN);
 799     }
 800   else
 801     GTK_WIDGET_CLASS (bin_class)->unmap (widget);
 802 }
 803
 804 static void
 805 gtk_plug_size_allocate (GtkWidget     *widget,
 806                         GtkAllocation *allocation)
 807 {
 808   GtkWidget *child;
 809
 810   if (gtk_widget_is_toplevel (widget))
 811     GTK_WIDGET_CLASS (gtk_plug_parent_class)->size_allocate (widget, allocation);
 812   else
 813     {
 814       GtkBin *bin = GTK_BIN (widget);
 815
 816       gtk_widget_set_allocation (widget, allocation);
 817
 818       if (gtk_widget_get_realized (widget))
 819         gdk_window_move_resize (gtk_widget_get_window (widget),
 820                                 allocation->x, allocation->y,
 821                                 allocation->width, allocation->height);
 822
 823       child = gtk_bin_get_child (bin);
 824
 825       if (child != NULL && gtk_widget_get_visible (child))
 826         {
 827           GtkAllocation child_allocation;
 828
 829           child_allocation.x = child_allocation.y = gtk_container_get_border_width (GTK_CONTAINER (widget));
 830           child_allocation.width =
 831             MAX (1, (gint)allocation->width - child_allocation.x * 2);
 832           child_allocation.height =
 833             MAX (1, (gint)allocation->height - child_allocation.y * 2);
 834
 835           gtk_widget_size_allocate (child, &child_allocation);
 836         }
 837
 838     }
 839 }
 840
 841 static gboolean
 842 gtk_plug_key_press_event (GtkWidget   *widget,
 843                           GdkEventKey *event)
 844 {
 845   if (gtk_widget_is_toplevel (widget))
 846     return GTK_WIDGET_CLASS (gtk_plug_parent_class)->key_press_event (widget, event);
 847   else
 848     return FALSE;
 849 }
 850
 851 static gboolean
 852 gtk_plug_focus_event (GtkWidget      *widget,
 853                       GdkEventFocus  *event)
 854 {
 855   /* We eat focus-in events and focus-out events, since they
 856    * can be generated by something like a keyboard grab on
 857    * a child of the plug.
 858    */
 859   return FALSE;
 860 }
 861
 862 static void
 863 gtk_plug_set_focus (GtkWindow *window,
 864                     GtkWidget *focus)
 865 {
 866   GtkPlug *plug = GTK_PLUG (window);
 867
 868   GTK_WINDOW_CLASS (gtk_plug_parent_class)->set_focus (window, focus);
 869
 870   /* Ask for focus from embedder
 871    */
 872
 873   if (focus && !gtk_window_has_toplevel_focus (window))
 874     _gtk_plug_windowing_set_focus (plug);
 875 }
 876
 877 static guint
 878 grabbed_key_hash (gconstpointer a)
 879 {
 880   const GrabbedKey *key = a;
 881   guint h;
 882
 883   h = key->accelerator_key << 16;
 884   h ^= key->accelerator_key >> 16;
 885   h ^= key->accelerator_mods;
 886
 887   return h;
 888 }
 889
 890 static gboolean
 891 grabbed_key_equal (gconstpointer a, gconstpointer b)
 892 {
 893   const GrabbedKey *keya = a;
 894   const GrabbedKey *keyb = b;
 895
 896   return (keya->accelerator_key == keyb->accelerator_key &&
 897           keya->accelerator_mods == keyb->accelerator_mods);
 898 }
 899
 900 static void
 901 add_grabbed_key (gpointer key, gpointer val, gpointer data)
 902 {
 903   GrabbedKey *grabbed_key = key;
 904   GtkPlug *plug = data;
 905   GtkPlugPrivate *priv = plug->priv;
 906
 907   if (!priv->grabbed_keys ||
 908       !g_hash_table_lookup (priv->grabbed_keys, grabbed_key))
 909     {
 910       _gtk_plug_windowing_add_grabbed_key (plug,
 911                                            grabbed_key->accelerator_key,
 912                                            grabbed_key->accelerator_mods);
 913     }
 914 }
 915
 916 static void
 917 add_grabbed_key_always (gpointer key,
 918                         gpointer val,
 919                         gpointer data)
 920 {
 921   GrabbedKey *grabbed_key = key;
 922   GtkPlug *plug = data;
 923
 924   _gtk_plug_windowing_add_grabbed_key (plug,
 925                                        grabbed_key->accelerator_key,
 926                                        grabbed_key->accelerator_mods);
 927 }
 928
 929 /**
 930  * _gtk_plug_add_all_grabbed_keys:
 931  *
 932  * @plug: a #GtkPlug
 933  *
 934  * Calls _gtk_plug_windowing_add_grabbed_key() on all the grabbed keys
 935  * in the @plug.
 936  */
 937 void
 938 _gtk_plug_add_all_grabbed_keys (GtkPlug *plug)
 939 {
 940   GtkPlugPrivate *priv = plug->priv;
 941
 942   if (priv->grabbed_keys)
 943     g_hash_table_foreach (priv->grabbed_keys, add_grabbed_key_always, plug);
 944 }
 945
 946 static void
 947 remove_grabbed_key (gpointer key, gpointer val, gpointer data)
 948 {
 949   GrabbedKey *grabbed_key = key;
 950   GtkPlug *plug = data;
 951   GtkPlugPrivate *priv = plug->priv;
 952
 953   if (!priv->grabbed_keys ||
 954       !g_hash_table_lookup (priv->grabbed_keys, grabbed_key))
 955     {
 956       _gtk_plug_windowing_remove_grabbed_key (plug,
 957                                               grabbed_key->accelerator_key,
 958                                               grabbed_key->accelerator_mods);
 959     }
 960 }
 961
 962 static void
 963 keys_foreach (GtkWindow      *window,
 964               guint           keyval,
 965               GdkModifierType modifiers,
 966               gboolean        is_mnemonic,
 967               gpointer        data)
 968 {
 969   GHashTable *new_grabbed_keys = data;
 970   GrabbedKey *key = g_slice_new (GrabbedKey);
 971
 972   key->accelerator_key = keyval;
 973   key->accelerator_mods = modifiers;
 974
 975   g_hash_table_replace (new_grabbed_keys, key, key);
 976 }
 977
 978 static void
 979 grabbed_key_free (gpointer data)
 980 {
 981   g_slice_free (GrabbedKey, data);
 982 }
 983
 984 static void
 985 gtk_plug_keys_changed (GtkWindow *window)
 986 {
 987   GHashTable *new_grabbed_keys, *old_grabbed_keys;
 988   GtkPlug *plug = GTK_PLUG (window);
 989   GtkPlugPrivate *priv = plug->priv;
 990
 991   new_grabbed_keys = g_hash_table_new_full (grabbed_key_hash, grabbed_key_equal, (GDestroyNotify)grabbed_key_free, NULL);
 992   _gtk_window_keys_foreach (window, keys_foreach, new_grabbed_keys);
 993
 994   if (priv->socket_window)
 995     g_hash_table_foreach (new_grabbed_keys, add_grabbed_key, plug);
 996
 997   old_grabbed_keys = priv->grabbed_keys;
 998   priv->grabbed_keys = new_grabbed_keys;
 999
1000   if (old_grabbed_keys)
1001     {
1002       if (priv->socket_window)
1003         g_hash_table_foreach (old_grabbed_keys, remove_grabbed_key, plug);
1004       g_hash_table_destroy (old_grabbed_keys);
1005     }
1006 }
1007
1008 static gboolean
1009 gtk_plug_focus (GtkWidget        *widget,
1010                 GtkDirectionType  direction)
1011 {
1012   GtkBin *bin = GTK_BIN (widget);
1013   GtkPlug *plug = GTK_PLUG (widget);
1014   GtkWindow *window = GTK_WINDOW (widget);
1015   GtkContainer *container = GTK_CONTAINER (widget);
1016   GtkWidget *child;
1017   GtkWidget *old_focus_child;
1018   GtkWidget *parent;
1019
1020   old_focus_child = gtk_container_get_focus_child (container);
1021   /* We override GtkWindow's behavior, since we don't want wrapping here.
1022    */
1023   if (old_focus_child)
1024     {
1025       GtkWidget *focus_widget;
1026
1027       if (gtk_widget_child_focus (old_focus_child, direction))
1028         return TRUE;
1029
1030       focus_widget = gtk_window_get_focus (window);
1031       if (focus_widget)
1032         {
1033           /* Wrapped off the end, clear the focus setting for the toplevel */
1034           parent = gtk_widget_get_parent (focus_widget);
1035           while (parent)
1036             {
1037               gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
1038               parent = gtk_widget_get_parent (parent);
1039             }
1040
1041           gtk_window_set_focus (GTK_WINDOW (container), NULL);
1042         }
1043     }
1044   else
1045     {
1046       /* Try to focus the first widget in the window */
1047       child = gtk_bin_get_child (bin);
1048       if (child && gtk_widget_child_focus (child, direction))
1049         return TRUE;
1050     }
1051
1052   if (!gtk_container_get_focus_child (GTK_CONTAINER (window)))
1053     _gtk_plug_windowing_focus_to_parent (plug, direction);
1054
1055   return FALSE;
1056 }
1057
1058 static void
1059 gtk_plug_check_resize (GtkContainer *container)
1060 {
1061   if (gtk_widget_is_toplevel (GTK_WIDGET (container)))
1062     GTK_CONTAINER_CLASS (gtk_plug_parent_class)->check_resize (container);
1063   else
1064     GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
1065 }
1066
1067 /**
1068  * _gtk_plug_handle_modality_on:
1069  *
1070  * @plug: a #GtkPlug
1071  *
1072  * Called from the GtkPlug backend when the corresponding socket has
1073  * told the plug that it modality has toggled on.
1074  */
1075 void
1076 _gtk_plug_handle_modality_on (GtkPlug *plug)
1077 {
1078   GtkPlugPrivate *priv = plug->priv;
1079
1080   if (!priv->modality_window)
1081     {
1082       priv->modality_window = gtk_window_new (GTK_WINDOW_POPUP);
1083       gtk_window_set_screen (GTK_WINDOW (priv->modality_window),
1084                              gtk_widget_get_screen (GTK_WIDGET (plug)));
1085       gtk_widget_realize (priv->modality_window);
1086       gtk_window_group_add_window (priv->modality_group, GTK_WINDOW (priv->modality_window));
1087       gtk_grab_add (priv->modality_window);
1088     }
1089 }
1090
1091 /**
1092  * _gtk_plug_handle_modality_off:
1093  *
1094  * @plug: a #GtkPlug
1095  *
1096  * Called from the GtkPlug backend when the corresponding socket has
1097  * told the plug that it modality has toggled off.
1098  */
1099 void
1100 _gtk_plug_handle_modality_off (GtkPlug *plug)
1101 {
1102   GtkPlugPrivate *priv = plug->priv;
1103
1104   if (priv->modality_window)
1105     {
1106       gtk_widget_destroy (priv->modality_window);
1107       priv->modality_window = NULL;
1108     }
1109 }
1110
1111 /**
1112  * _gtk_plug_focus_first_last:
1113  *
1114  * @plug: a #GtkPlug
1115  * @direction: a direction
1116  *
1117  * Called from the GtkPlug backend when the corresponding socket has
1118  * told the plug that it has received the focus.
1119  */
1120 void
1121 _gtk_plug_focus_first_last (GtkPlug          *plug,
1122                             GtkDirectionType  direction)
1123 {
1124   GtkWindow *window = GTK_WINDOW (plug);
1125   GtkWidget *focus_widget;
1126   GtkWidget *parent;
1127
1128   focus_widget = gtk_window_get_focus (window);
1129   if (focus_widget)
1130     {
1131       parent = gtk_widget_get_parent (focus_widget);
1132       while (parent)
1133         {
1134           gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
1135           parent = gtk_widget_get_parent (parent);
1136         }
1137
1138       gtk_window_set_focus (GTK_WINDOW (plug), NULL);
1139     }
1140
1141   gtk_widget_child_focus (GTK_WIDGET (plug), direction);
1142 }