Pileus Git - ~andy/gtk/blob - gtk/gtksocket.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 Library 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  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library 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 1997-1999.  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 "gdkconfig.h"
  29
  30 #if defined (GDK_WINDOWING_X11)
  31 #include "x11/gdkx.h"
  32 #elif defined (GDK_WINDOWING_WIN32)
  33 #include "win32/gdkwin32.h"
  34 #elif defined(GDK_WINDOWING_FB)
  35 #include "linux-fb/gdkfb.h"
  36 #endif
  37
  38 #include "gdk/gdkkeysyms.h"
  39 #include "gtkwindow.h"
  40 #include "gtksignal.h"
  41 #include "gtksocket.h"
  42 #include "gtkdnd.h"
  43
  44 #ifdef GDK_WINDOWING_X11
  45
  46 /* Forward declararations */
  47
  48 static void gtk_socket_class_init               (GtkSocketClass    *klass);
  49 static void gtk_socket_init                     (GtkSocket         *socket);
  50 static void gtk_socket_realize                  (GtkWidget        *widget);
  51 static void gtk_socket_unrealize                (GtkWidget        *widget);
  52 static void gtk_socket_size_request             (GtkWidget      *widget,
  53                                                GtkRequisition *requisition);
  54 static void gtk_socket_size_allocate            (GtkWidget     *widget,
  55                                                GtkAllocation *allocation);
  56 static gint gtk_socket_focus_in_event           (GtkWidget *widget,
  57                                                  GdkEventFocus *event);
  58 static void gtk_socket_claim_focus              (GtkSocket *socket);
  59 static gint gtk_socket_focus_out_event          (GtkWidget *widget,
  60                                                  GdkEventFocus *event);
  61 static void gtk_socket_send_configure_event     (GtkSocket *socket);
  62 static gint gtk_socket_focus                    (GtkContainer *container,
  63                                                  GtkDirectionType direction);
  64 static GdkFilterReturn gtk_socket_filter_func   (GdkXEvent *gdk_xevent,
  65                                                  GdkEvent *event,
  66                                                  gpointer data);
  67
  68 /* From Tk */
  69 #define EMBEDDED_APP_WANTS_FOCUS NotifyNormal+20
  70
  71 /* Local data */
  72
  73 static GtkWidgetClass *parent_class = NULL;
  74
  75 GtkType
  76 gtk_socket_get_type (void)
  77 {
  78   static GtkType socket_type = 0;
  79
  80   if (!socket_type)
  81     {
  82       static const GTypeInfo socket_info =
  83       {
  84         sizeof (GtkSocketClass),
  85         NULL,           /* base_init */
  86         NULL,           /* base_finalize */
  87         (GClassInitFunc) gtk_socket_class_init,
  88         NULL,           /* class_finalize */
  89         NULL,           /* class_data */
  90         sizeof (GtkSocket),
  91         16,             /* n_preallocs */
  92         (GInstanceInitFunc) gtk_socket_init,
  93       };
  94
  95       socket_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkSocket", &socket_info);
  96     }
  97
  98   return socket_type;
  99 }
 100
 101 static void
 102 gtk_socket_class_init (GtkSocketClass *class)
 103 {
 104   GtkObjectClass *object_class;
 105   GtkWidgetClass *widget_class;
 106   GtkContainerClass *container_class;
 107
 108   object_class = (GtkObjectClass*) class;
 109   widget_class = (GtkWidgetClass*) class;
 110   container_class = (GtkContainerClass*) class;
 111
 112   parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
 113
 114   widget_class->realize = gtk_socket_realize;
 115   widget_class->unrealize = gtk_socket_unrealize;
 116   widget_class->size_request = gtk_socket_size_request;
 117   widget_class->size_allocate = gtk_socket_size_allocate;
 118   widget_class->focus_in_event = gtk_socket_focus_in_event;
 119   widget_class->focus_out_event = gtk_socket_focus_out_event;
 120
 121   container_class->focus = gtk_socket_focus;
 122 }
 123
 124 static void
 125 gtk_socket_init (GtkSocket *socket)
 126 {
 127   socket->request_width = 0;
 128   socket->request_height = 0;
 129   socket->current_width = 0;
 130   socket->current_height = 0;
 131
 132   socket->plug_window = NULL;
 133   socket->same_app = FALSE;
 134   socket->focus_in = FALSE;
 135   socket->have_size = FALSE;
 136   socket->need_map = FALSE;
 137 }
 138
 139 GtkWidget*
 140 gtk_socket_new (void)
 141 {
 142   GtkSocket *socket;
 143
 144   socket = gtk_type_new (GTK_TYPE_SOCKET);
 145
 146   return GTK_WIDGET (socket);
 147 }
 148
 149 void
 150 gtk_socket_steal (GtkSocket *socket, GdkNativeWindow id)
 151 {
 152   GtkWidget *widget;
 153
 154   widget = GTK_WIDGET (socket);
 155
 156   socket->plug_window = gdk_window_lookup (id);
 157
 158   gdk_error_trap_push ();
 159
 160   if (socket->plug_window && socket->plug_window->user_data)
 161     {
 162       /*
 163         GtkWidget *child_widget;
 164
 165         child_widget = GTK_WIDGET (socket->plug_window->user_data);
 166       */
 167
 168       g_warning("Stealing from same app not yet implemented");
 169
 170       socket->same_app = TRUE;
 171     }
 172   else
 173     {
 174       socket->plug_window = gdk_window_foreign_new (id);
 175       if (!socket->plug_window) /* was deleted before we could get it */
 176         {
 177           gdk_error_trap_pop ();
 178           return;
 179         }
 180
 181       socket->same_app = FALSE;
 182       socket->have_size = FALSE;
 183
 184       XSelectInput (GDK_DISPLAY (),
 185                     GDK_WINDOW_XWINDOW(socket->plug_window),
 186                     StructureNotifyMask | PropertyChangeMask);
 187
 188       gtk_widget_queue_resize (widget);
 189     }
 190
 191   gdk_window_hide (socket->plug_window);
 192   gdk_window_reparent (socket->plug_window, widget->window, 0, 0);
 193
 194   gdk_flush ();
 195   gdk_error_trap_pop ();
 196
 197   socket->need_map = TRUE;
 198 }
 199
 200 static void
 201 gtk_socket_realize (GtkWidget *widget)
 202 {
 203   GtkSocket *socket;
 204   GdkWindowAttr attributes;
 205   gint attributes_mask;
 206   XWindowAttributes xattrs;
 207
 208   g_return_if_fail (widget != NULL);
 209   g_return_if_fail (GTK_IS_SOCKET (widget));
 210
 211   socket = GTK_SOCKET (widget);
 212   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 213
 214   attributes.window_type = GDK_WINDOW_CHILD;
 215   attributes.x = widget->allocation.x;
 216   attributes.y = widget->allocation.y;
 217   attributes.width = widget->allocation.width;
 218   attributes.height = widget->allocation.height;
 219   attributes.wclass = GDK_INPUT_OUTPUT;
 220   attributes.visual = gtk_widget_get_visual (widget);
 221   attributes.colormap = gtk_widget_get_colormap (widget);
 222   attributes.event_mask = GDK_FOCUS_CHANGE_MASK;
 223
 224   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 225
 226   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 227                                    &attributes, attributes_mask);
 228   gdk_window_set_user_data (widget->window, socket);
 229
 230   widget->style = gtk_style_attach (widget->style, widget->window);
 231   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 232
 233   XGetWindowAttributes (GDK_DISPLAY (),
 234                         GDK_WINDOW_XWINDOW (widget->window),
 235                         &xattrs);
 236
 237   XSelectInput (GDK_DISPLAY (),
 238                 GDK_WINDOW_XWINDOW(widget->window),
 239                 xattrs.your_event_mask |
 240                 SubstructureNotifyMask | SubstructureRedirectMask);
 241
 242   gdk_window_add_filter (widget->window, gtk_socket_filter_func, widget);
 243
 244   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 245
 246   /* We sync here so that we make sure that if the XID for
 247    * our window is passed to another application, SubstructureRedirectMask
 248    * will be set by the time the other app creates its window.
 249    */
 250   gdk_flush();
 251 }
 252
 253 static void
 254 gtk_socket_unrealize (GtkWidget *widget)
 255 {
 256   GtkSocket *socket;
 257
 258   g_return_if_fail (widget != NULL);
 259   g_return_if_fail (GTK_IS_SOCKET (widget));
 260
 261   socket = GTK_SOCKET (widget);
 262
 263   if (socket->plug_window)
 264     {
 265       GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
 266       if (toplevel && GTK_IS_WINDOW (toplevel))
 267         gtk_window_remove_embedded_xid (GTK_WINDOW (toplevel),
 268                                         GDK_WINDOW_XWINDOW (socket->plug_window));
 269     }
 270
 271   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 272     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 273 }
 274
 275 static void
 276 gtk_socket_size_request (GtkWidget      *widget,
 277                          GtkRequisition *requisition)
 278 {
 279   GtkSocket *socket;
 280
 281   g_return_if_fail (widget != NULL);
 282   g_return_if_fail (GTK_IS_SOCKET (widget));
 283   g_return_if_fail (requisition != NULL);
 284
 285   socket = GTK_SOCKET (widget);
 286
 287   if (!socket->have_size && socket->plug_window)
 288     {
 289       XSizeHints hints;
 290       long supplied;
 291
 292       gdk_error_trap_push ();
 293
 294       if (XGetWMNormalHints (GDK_DISPLAY(),
 295                              GDK_WINDOW_XWINDOW (socket->plug_window),
 296                              &hints, &supplied))
 297         {
 298           /* This is obsolete, according the X docs, but many programs
 299            * still use it */
 300           if (hints.flags & (PSize | USSize))
 301             {
 302               socket->request_width = hints.width;
 303               socket->request_height = hints.height;
 304             }
 305           else if (hints.flags & PMinSize)
 306             {
 307               socket->request_width = hints.min_width;
 308               socket->request_height = hints.min_height;
 309             }
 310           else if (hints.flags & PBaseSize)
 311             {
 312               socket->request_width = hints.base_width;
 313               socket->request_height = hints.base_height;
 314             }
 315         }
 316       socket->have_size = TRUE; /* don't check again? */
 317
 318       gdk_error_trap_pop ();
 319     }
 320
 321   requisition->width = MAX (socket->request_width, 1);
 322   requisition->height = MAX (socket->request_height, 1);
 323 }
 324
 325 static void
 326 gtk_socket_size_allocate (GtkWidget     *widget,
 327                           GtkAllocation *allocation)
 328 {
 329   GtkSocket *socket;
 330
 331   g_return_if_fail (widget != NULL);
 332   g_return_if_fail (GTK_IS_SOCKET (widget));
 333   g_return_if_fail (allocation != NULL);
 334
 335   socket = GTK_SOCKET (widget);
 336
 337   widget->allocation = *allocation;
 338   if (GTK_WIDGET_REALIZED (widget))
 339     {
 340       gdk_window_move_resize (widget->window,
 341                               allocation->x, allocation->y,
 342                               allocation->width, allocation->height);
 343
 344       if (socket->plug_window)
 345         {
 346           gdk_error_trap_push ();
 347
 348           if (!socket->need_map &&
 349               (allocation->width == socket->current_width) &&
 350               (allocation->height == socket->current_height))
 351             {
 352               gtk_socket_send_configure_event (socket);
 353               GTK_NOTE(PLUGSOCKET,
 354                        g_message ("GtkSocket - allocated no change: %d %d",
 355                                   allocation->width, allocation->height));
 356             }
 357           else
 358             {
 359               gdk_window_move_resize (socket->plug_window,
 360                                       0, 0,
 361                                       allocation->width, allocation->height);
 362               GTK_NOTE(PLUGSOCKET,
 363                        g_message ("GtkSocket - allocated: %d %d",
 364                                   allocation->width, allocation->height));
 365               socket->current_width = allocation->width;
 366               socket->current_height = allocation->height;
 367             }
 368
 369           if (socket->need_map)
 370             {
 371               gdk_window_show (socket->plug_window);
 372               socket->need_map = FALSE;
 373             }
 374
 375           gdk_flush ();
 376           gdk_error_trap_pop ();
 377         }
 378     }
 379 }
 380
 381 static gint
 382 gtk_socket_focus_in_event (GtkWidget *widget, GdkEventFocus *event)
 383 {
 384   GtkSocket *socket;
 385   g_return_val_if_fail (GTK_IS_SOCKET (widget), FALSE);
 386   socket = GTK_SOCKET (widget);
 387
 388   if (socket->focus_in && socket->plug_window)
 389     {
 390       gdk_error_trap_push ();
 391       XSetInputFocus (GDK_DISPLAY (),
 392                       GDK_WINDOW_XWINDOW (socket->plug_window),
 393                       RevertToParent, GDK_CURRENT_TIME);
 394       gdk_flush();
 395       gdk_error_trap_pop ();
 396     }
 397
 398   return TRUE;
 399 }
 400
 401 static gint
 402 gtk_socket_focus_out_event (GtkWidget *widget, GdkEventFocus *event)
 403 {
 404   GtkWidget *toplevel;
 405   GtkSocket *socket;
 406
 407   g_return_val_if_fail (GTK_IS_SOCKET (widget), FALSE);
 408   socket = GTK_SOCKET (widget);
 409
 410   toplevel = gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW);
 411
 412   if (toplevel)
 413     {
 414       XSetInputFocus (GDK_DISPLAY (),
 415                       GDK_WINDOW_XWINDOW (toplevel->window),
 416                       RevertToParent, CurrentTime); /* FIXME? */
 417     }
 418
 419   socket->focus_in = FALSE;
 420
 421   return TRUE;
 422 }
 423
 424 static void
 425 gtk_socket_claim_focus (GtkSocket *socket)
 426 {
 427
 428   socket->focus_in = TRUE;
 429
 430   /* Oh, the trickery... */
 431
 432   GTK_WIDGET_SET_FLAGS (socket, GTK_CAN_FOCUS);
 433   gtk_widget_grab_focus (GTK_WIDGET (socket));
 434   GTK_WIDGET_UNSET_FLAGS (socket, GTK_CAN_FOCUS);
 435
 436   /* FIXME: we might grab the focus even if we don't have
 437    * it as an app... (and see _focus_in ()) */
 438   if (socket->plug_window)
 439     {
 440       gdk_error_trap_push ();
 441       XSetInputFocus (GDK_DISPLAY (),
 442                       GDK_WINDOW_XWINDOW (socket->plug_window),
 443                       RevertToParent, GDK_CURRENT_TIME);
 444       gdk_flush ();
 445       gdk_error_trap_pop ();
 446     }
 447 }
 448
 449 static gint
 450 gtk_socket_focus (GtkContainer *container, GtkDirectionType direction)
 451 {
 452   GtkSocket *socket;
 453
 454   g_return_val_if_fail (GTK_IS_SOCKET (container), FALSE);
 455
 456   socket = GTK_SOCKET (container);
 457
 458   if (!socket->focus_in && socket->plug_window)
 459     {
 460       XEvent xevent;
 461
 462       gtk_socket_claim_focus (socket);
 463
 464       xevent.xkey.type = KeyPress;
 465       xevent.xkey.display = GDK_DISPLAY ();
 466       xevent.xkey.window = GDK_WINDOW_XWINDOW (socket->plug_window);
 467       xevent.xkey.root = GDK_ROOT_WINDOW (); /* FIXME */
 468       xevent.xkey.time = GDK_CURRENT_TIME; /* FIXME */
 469       /* FIXME, the following might cause big problems for
 470        * non-GTK apps */
 471       xevent.xkey.x = 0;
 472       xevent.xkey.y = 0;
 473       xevent.xkey.x_root = 0;
 474       xevent.xkey.y_root = 0;
 475       xevent.xkey.state = 0;
 476       xevent.xkey.same_screen = TRUE; /* FIXME ? */
 477
 478       switch (direction)
 479         {
 480         case GTK_DIR_UP:
 481           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Up);
 482           break;
 483         case GTK_DIR_DOWN:
 484           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Down);
 485           break;
 486         case GTK_DIR_LEFT:
 487           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Left);
 488           break;
 489         case GTK_DIR_RIGHT:
 490           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Right);
 491           break;
 492         case GTK_DIR_TAB_FORWARD:
 493           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Tab);
 494           break;
 495         case GTK_DIR_TAB_BACKWARD:
 496           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Tab);
 497           xevent.xkey.state = ShiftMask;
 498           break;
 499         }
 500
 501
 502       gdk_error_trap_push ();
 503       XSendEvent (gdk_display,
 504                   GDK_WINDOW_XWINDOW (socket->plug_window),
 505                   False, NoEventMask, &xevent);
 506       gdk_flush();
 507       gdk_error_trap_pop ();
 508
 509       return TRUE;
 510     }
 511   else
 512     {
 513       return FALSE;
 514     }
 515 }
 516
 517 static void
 518 gtk_socket_send_configure_event (GtkSocket *socket)
 519 {
 520   XEvent event;
 521
 522   g_return_if_fail (socket->plug_window != NULL);
 523
 524   event.xconfigure.type = ConfigureNotify;
 525   event.xconfigure.display = gdk_display;
 526
 527   event.xconfigure.event = GDK_WINDOW_XWINDOW (socket->plug_window);
 528   event.xconfigure.window = GDK_WINDOW_XWINDOW (socket->plug_window);
 529
 530   event.xconfigure.x = 0;
 531   event.xconfigure.y = 0;
 532   event.xconfigure.width = GTK_WIDGET(socket)->allocation.width;
 533   event.xconfigure.height = GTK_WIDGET(socket)->allocation.height;
 534
 535   event.xconfigure.border_width = 0;
 536   event.xconfigure.above = None;
 537   event.xconfigure.override_redirect = False;
 538
 539   gdk_error_trap_push ();
 540   XSendEvent (gdk_display,
 541               GDK_WINDOW_XWINDOW (socket->plug_window),
 542               False, NoEventMask, &event);
 543   gdk_flush ();
 544   gdk_error_trap_pop ();
 545 }
 546
 547 static void
 548 gtk_socket_add_window (GtkSocket *socket, GdkNativeWindow xid)
 549 {
 550   socket->plug_window = gdk_window_lookup (xid);
 551   socket->same_app = TRUE;
 552
 553   if (!socket->plug_window)
 554     {
 555       GtkWidget *toplevel;
 556       GdkDragProtocol protocol;
 557
 558       socket->plug_window = gdk_window_foreign_new (xid);
 559       if (!socket->plug_window) /* Already gone */
 560         return;
 561
 562       socket->same_app = FALSE;
 563
 564       gdk_error_trap_push ();
 565       XSelectInput (GDK_DISPLAY (),
 566                     GDK_WINDOW_XWINDOW(socket->plug_window),
 567                     StructureNotifyMask | PropertyChangeMask);
 568
 569       if (gdk_drag_get_protocol (xid, &protocol))
 570         gtk_drag_dest_set_proxy (GTK_WIDGET (socket), socket->plug_window,
 571                                  protocol, TRUE);
 572       gdk_flush ();
 573       gdk_error_trap_pop ();
 574
 575       gdk_window_add_filter (socket->plug_window,
 576                              gtk_socket_filter_func, socket);
 577
 578       /* Add a pointer to the socket on our toplevel window */
 579
 580       toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
 581       if (toplevel && GTK_IS_WINDOW (toplevel))
 582         {
 583           gtk_window_add_embedded_xid (GTK_WINDOW (toplevel), xid);
 584         }
 585     }
 586 }
 587
 588 static GdkFilterReturn
 589 gtk_socket_filter_func (GdkXEvent *gdk_xevent, GdkEvent *event, gpointer data)
 590 {
 591   GtkSocket *socket;
 592   GtkWidget *widget;
 593   XEvent *xevent;
 594
 595   GdkFilterReturn return_val;
 596
 597   socket = GTK_SOCKET (data);
 598   widget = GTK_WIDGET (socket);
 599   xevent = (XEvent *)gdk_xevent;
 600
 601   return_val = GDK_FILTER_CONTINUE;
 602
 603   switch (xevent->type)
 604     {
 605     case CreateNotify:
 606       {
 607         XCreateWindowEvent *xcwe = &xevent->xcreatewindow;
 608
 609         if (!socket->plug_window)
 610           {
 611             gtk_socket_add_window (socket, xcwe->window);
 612
 613             gdk_error_trap_push ();
 614             gdk_window_move_resize(socket->plug_window,
 615                                    0, 0,
 616                                    widget->allocation.width,
 617                                    widget->allocation.height);
 618             gdk_flush ();
 619             gdk_error_trap_pop ();
 620
 621             socket->request_width = xcwe->width;
 622             socket->request_height = xcwe->height;
 623             socket->have_size = TRUE;
 624
 625             GTK_NOTE(PLUGSOCKET,
 626                      g_message ("GtkSocket - window created with size: %d %d",
 627                                 socket->request_width,
 628                                 socket->request_height));
 629
 630             gtk_widget_queue_resize (widget);
 631           }
 632
 633         return_val = GDK_FILTER_REMOVE;
 634
 635         break;
 636       }
 637
 638     case ConfigureRequest:
 639       {
 640         XConfigureRequestEvent *xcre = &xevent->xconfigurerequest;
 641
 642         if (!socket->plug_window)
 643           gtk_socket_add_window (socket, xcre->window);
 644
 645         if (xcre->window == GDK_WINDOW_XWINDOW (socket->plug_window))
 646           {
 647             if (xcre->value_mask & (CWWidth | CWHeight))
 648               {
 649                 socket->request_width = xcre->width;
 650                 socket->request_height = xcre->height;
 651                 socket->have_size = TRUE;
 652
 653                 GTK_NOTE(PLUGSOCKET,
 654                          g_message ("GtkSocket - configure request: %d %d",
 655                                     socket->request_width,
 656                                     socket->request_height));
 657
 658                 gtk_widget_queue_resize (widget);
 659               }
 660             else if (xcre->value_mask & (CWX | CWY))
 661               {
 662                 gtk_socket_send_configure_event (socket);
 663               }
 664             /* Ignore stacking requests. */
 665
 666             return_val = GDK_FILTER_REMOVE;
 667           }
 668         break;
 669       }
 670
 671     case DestroyNotify:
 672       {
 673         XDestroyWindowEvent *xdwe = &xevent->xdestroywindow;
 674
 675         if (socket->plug_window &&
 676             (xdwe->window == GDK_WINDOW_XWINDOW (socket->plug_window)))
 677           {
 678             GtkWidget *toplevel;
 679
 680             GTK_NOTE(PLUGSOCKET,
 681                      g_message ("GtkSocket - destroy notify"));
 682
 683             toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
 684             if (toplevel && GTK_IS_WINDOW (toplevel))
 685               gtk_window_remove_embedded_xid (GTK_WINDOW (toplevel), xdwe->window);
 686             gdk_window_destroy_notify (socket->plug_window);
 687             gtk_widget_destroy (widget);
 688
 689             socket->plug_window = NULL;
 690
 691             return_val = GDK_FILTER_REMOVE;
 692           }
 693         break;
 694     }
 695
 696     case FocusIn:
 697       if (xevent->xfocus.mode == EMBEDDED_APP_WANTS_FOCUS)
 698         {
 699           gtk_socket_claim_focus (socket);
 700         }
 701       else if (xevent->xfocus.detail == NotifyInferior)
 702         {
 703 #if 0
 704           GtkWidget *toplevel;
 705           toplevel = gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW);
 706
 707           if (toplevel)
 708             {
 709               XSetInputFocus (GDK_DISPLAY (),
 710                               GDK_WINDOW_XWINDOW (toplevel->window),
 711                               RevertToParent, CurrentTime); /* FIXME? */
 712             }
 713 #endif
 714         }
 715       return_val = GDK_FILTER_REMOVE;
 716       break;
 717     case FocusOut:
 718       return_val = GDK_FILTER_REMOVE;
 719       break;
 720     case MapRequest:
 721       if (!socket->plug_window)
 722         gtk_socket_add_window (socket, xevent->xmaprequest.window);
 723
 724       if (xevent->xmaprequest.window ==
 725           GDK_WINDOW_XWINDOW (socket->plug_window))
 726         {
 727           GTK_NOTE(PLUGSOCKET,
 728                    g_message ("GtkSocket - Map Request"));
 729
 730           gdk_error_trap_push ();
 731           gdk_window_show (socket->plug_window);
 732           gdk_flush ();
 733           gdk_error_trap_pop ();
 734
 735           return_val = GDK_FILTER_REMOVE;
 736         }
 737       break;
 738     case PropertyNotify:
 739       if (xevent->xproperty.window ==
 740           GDK_WINDOW_XWINDOW (socket->plug_window))
 741         {
 742           GdkDragProtocol protocol;
 743
 744           if ((xevent->xproperty.atom == gdk_atom_intern ("XdndAware", FALSE)) ||
 745               (xevent->xproperty.atom == gdk_atom_intern ("_MOTIF_DRAG_RECEIVER_INFO", FALSE)))
 746             {
 747               gdk_error_trap_push ();
 748               if (gdk_drag_get_protocol (xevent->xproperty.window, &protocol))
 749                 gtk_drag_dest_set_proxy (GTK_WIDGET (socket),
 750                                          socket->plug_window,
 751                                          protocol, TRUE);
 752               gdk_flush ();
 753               gdk_error_trap_pop ();
 754             }
 755           return_val = GDK_FILTER_REMOVE;
 756         }
 757     }
 758
 759   return return_val;
 760 }
 761
 762 #else
 763
 764 GtkType
 765 gtk_socket_get_type (void)
 766 {
 767   g_error ("GtkSocket not implemented");
 768   return 0;
 769 }
 770
 771 GtkWidget*
 772 gtk_socket_new ()
 773 {
 774   g_error ("GtkSocket not implemented");
 775   return NULL;
 776 }
 777
 778 void
 779 gtk_socket_steal (GtkSocket *socket, GdkNativeWindow id)
 780 {
 781   g_error ("GtkSocket not implemented");
 782 }
 783
 784 #endif /* GDK_WINDOWING */