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 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 "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, 0);
  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   gpointer user_data = NULL;
 154
 155   widget = GTK_WIDGET (socket);
 156
 157   socket->plug_window = gdk_window_lookup (id);
 158
 159   gdk_error_trap_push ();
 160
 161   if (socket->plug_window)
 162     gdk_window_get_user_data (socket->plug_window,
 163                               &user_data);
 164
 165   if (user_data)
 166     {
 167       /*
 168         GtkWidget *child_widget;
 169
 170         child_widget = GTK_WIDGET (socket->plug_window->user_data);
 171       */
 172
 173       g_warning("Stealing from same app not yet implemented");
 174
 175       socket->same_app = TRUE;
 176     }
 177   else
 178     {
 179       socket->plug_window = gdk_window_foreign_new (id);
 180       if (!socket->plug_window) /* was deleted before we could get it */
 181         {
 182           gdk_error_trap_pop ();
 183           return;
 184         }
 185
 186       socket->same_app = FALSE;
 187       socket->have_size = FALSE;
 188
 189       XSelectInput (GDK_DISPLAY (),
 190                     GDK_WINDOW_XWINDOW(socket->plug_window),
 191                     StructureNotifyMask | PropertyChangeMask);
 192
 193       gtk_widget_queue_resize (widget);
 194     }
 195
 196   gdk_window_hide (socket->plug_window);
 197   gdk_window_reparent (socket->plug_window, widget->window, 0, 0);
 198
 199   gdk_flush ();
 200   gdk_error_trap_pop ();
 201
 202   socket->need_map = TRUE;
 203 }
 204
 205 static void
 206 gtk_socket_realize (GtkWidget *widget)
 207 {
 208   GtkSocket *socket;
 209   GdkWindowAttr attributes;
 210   gint attributes_mask;
 211   XWindowAttributes xattrs;
 212
 213   g_return_if_fail (widget != NULL);
 214   g_return_if_fail (GTK_IS_SOCKET (widget));
 215
 216   socket = GTK_SOCKET (widget);
 217   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 218
 219   attributes.window_type = GDK_WINDOW_CHILD;
 220   attributes.x = widget->allocation.x;
 221   attributes.y = widget->allocation.y;
 222   attributes.width = widget->allocation.width;
 223   attributes.height = widget->allocation.height;
 224   attributes.wclass = GDK_INPUT_OUTPUT;
 225   attributes.visual = gtk_widget_get_visual (widget);
 226   attributes.colormap = gtk_widget_get_colormap (widget);
 227   attributes.event_mask = GDK_FOCUS_CHANGE_MASK;
 228
 229   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 230
 231   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 232                                    &attributes, attributes_mask);
 233   gdk_window_set_user_data (widget->window, socket);
 234
 235   widget->style = gtk_style_attach (widget->style, widget->window);
 236   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 237
 238   XGetWindowAttributes (GDK_DISPLAY (),
 239                         GDK_WINDOW_XWINDOW (widget->window),
 240                         &xattrs);
 241
 242   XSelectInput (GDK_DISPLAY (),
 243                 GDK_WINDOW_XWINDOW(widget->window),
 244                 xattrs.your_event_mask |
 245                 SubstructureNotifyMask | SubstructureRedirectMask);
 246
 247   gdk_window_add_filter (widget->window, gtk_socket_filter_func, widget);
 248
 249   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 250
 251   /* We sync here so that we make sure that if the XID for
 252    * our window is passed to another application, SubstructureRedirectMask
 253    * will be set by the time the other app creates its window.
 254    */
 255   gdk_flush();
 256 }
 257
 258 static void
 259 gtk_socket_unrealize (GtkWidget *widget)
 260 {
 261   GtkSocket *socket;
 262
 263   g_return_if_fail (widget != NULL);
 264   g_return_if_fail (GTK_IS_SOCKET (widget));
 265
 266   socket = GTK_SOCKET (widget);
 267
 268   if (socket->plug_window)
 269     {
 270       GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
 271       if (toplevel && GTK_IS_WINDOW (toplevel))
 272         gtk_window_remove_embedded_xid (GTK_WINDOW (toplevel),
 273                                         GDK_WINDOW_XWINDOW (socket->plug_window));
 274     }
 275
 276   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 277     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 278 }
 279
 280 static void
 281 gtk_socket_size_request (GtkWidget      *widget,
 282                          GtkRequisition *requisition)
 283 {
 284   GtkSocket *socket;
 285
 286   g_return_if_fail (widget != NULL);
 287   g_return_if_fail (GTK_IS_SOCKET (widget));
 288   g_return_if_fail (requisition != NULL);
 289
 290   socket = GTK_SOCKET (widget);
 291
 292   if (!socket->have_size && socket->plug_window)
 293     {
 294       XSizeHints hints;
 295       long supplied;
 296
 297       gdk_error_trap_push ();
 298
 299       if (XGetWMNormalHints (GDK_DISPLAY(),
 300                              GDK_WINDOW_XWINDOW (socket->plug_window),
 301                              &hints, &supplied))
 302         {
 303           /* This is obsolete, according the X docs, but many programs
 304            * still use it */
 305           if (hints.flags & (PSize | USSize))
 306             {
 307               socket->request_width = hints.width;
 308               socket->request_height = hints.height;
 309             }
 310           else if (hints.flags & PMinSize)
 311             {
 312               socket->request_width = hints.min_width;
 313               socket->request_height = hints.min_height;
 314             }
 315           else if (hints.flags & PBaseSize)
 316             {
 317               socket->request_width = hints.base_width;
 318               socket->request_height = hints.base_height;
 319             }
 320         }
 321       socket->have_size = TRUE; /* don't check again? */
 322
 323       gdk_error_trap_pop ();
 324     }
 325
 326   requisition->width = MAX (socket->request_width, 1);
 327   requisition->height = MAX (socket->request_height, 1);
 328 }
 329
 330 static void
 331 gtk_socket_size_allocate (GtkWidget     *widget,
 332                           GtkAllocation *allocation)
 333 {
 334   GtkSocket *socket;
 335
 336   g_return_if_fail (widget != NULL);
 337   g_return_if_fail (GTK_IS_SOCKET (widget));
 338   g_return_if_fail (allocation != NULL);
 339
 340   socket = GTK_SOCKET (widget);
 341
 342   widget->allocation = *allocation;
 343   if (GTK_WIDGET_REALIZED (widget))
 344     {
 345       gdk_window_move_resize (widget->window,
 346                               allocation->x, allocation->y,
 347                               allocation->width, allocation->height);
 348
 349       if (socket->plug_window)
 350         {
 351           gdk_error_trap_push ();
 352
 353           if (!socket->need_map &&
 354               (allocation->width == socket->current_width) &&
 355               (allocation->height == socket->current_height))
 356             {
 357               gtk_socket_send_configure_event (socket);
 358               GTK_NOTE(PLUGSOCKET,
 359                        g_message ("GtkSocket - allocated no change: %d %d",
 360                                   allocation->width, allocation->height));
 361             }
 362           else
 363             {
 364               gdk_window_move_resize (socket->plug_window,
 365                                       0, 0,
 366                                       allocation->width, allocation->height);
 367               GTK_NOTE(PLUGSOCKET,
 368                        g_message ("GtkSocket - allocated: %d %d",
 369                                   allocation->width, allocation->height));
 370               socket->current_width = allocation->width;
 371               socket->current_height = allocation->height;
 372             }
 373
 374           if (socket->need_map)
 375             {
 376               gdk_window_show (socket->plug_window);
 377               socket->need_map = FALSE;
 378             }
 379
 380           gdk_flush ();
 381           gdk_error_trap_pop ();
 382         }
 383     }
 384 }
 385
 386 static gint
 387 gtk_socket_focus_in_event (GtkWidget *widget, GdkEventFocus *event)
 388 {
 389   GtkSocket *socket;
 390   g_return_val_if_fail (GTK_IS_SOCKET (widget), FALSE);
 391   socket = GTK_SOCKET (widget);
 392
 393   if (socket->focus_in && socket->plug_window)
 394     {
 395       gdk_error_trap_push ();
 396       XSetInputFocus (GDK_DISPLAY (),
 397                       GDK_WINDOW_XWINDOW (socket->plug_window),
 398                       RevertToParent, GDK_CURRENT_TIME);
 399       gdk_flush();
 400       gdk_error_trap_pop ();
 401     }
 402
 403   return TRUE;
 404 }
 405
 406 static gint
 407 gtk_socket_focus_out_event (GtkWidget *widget, GdkEventFocus *event)
 408 {
 409   GtkWidget *toplevel;
 410   GtkSocket *socket;
 411
 412   g_return_val_if_fail (GTK_IS_SOCKET (widget), FALSE);
 413   socket = GTK_SOCKET (widget);
 414
 415   toplevel = gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW);
 416
 417   if (toplevel)
 418     {
 419       XSetInputFocus (GDK_DISPLAY (),
 420                       GDK_WINDOW_XWINDOW (toplevel->window),
 421                       RevertToParent, CurrentTime); /* FIXME? */
 422     }
 423
 424   socket->focus_in = FALSE;
 425
 426   return TRUE;
 427 }
 428
 429 static void
 430 gtk_socket_claim_focus (GtkSocket *socket)
 431 {
 432
 433   socket->focus_in = TRUE;
 434
 435   /* Oh, the trickery... */
 436
 437   GTK_WIDGET_SET_FLAGS (socket, GTK_CAN_FOCUS);
 438   gtk_widget_grab_focus (GTK_WIDGET (socket));
 439   GTK_WIDGET_UNSET_FLAGS (socket, GTK_CAN_FOCUS);
 440
 441   /* FIXME: we might grab the focus even if we don't have
 442    * it as an app... (and see _focus_in ()) */
 443   if (socket->plug_window)
 444     {
 445       gdk_error_trap_push ();
 446       XSetInputFocus (GDK_DISPLAY (),
 447                       GDK_WINDOW_XWINDOW (socket->plug_window),
 448                       RevertToParent, GDK_CURRENT_TIME);
 449       gdk_flush ();
 450       gdk_error_trap_pop ();
 451     }
 452 }
 453
 454 static gint
 455 gtk_socket_focus (GtkContainer *container, GtkDirectionType direction)
 456 {
 457   GtkSocket *socket;
 458
 459   g_return_val_if_fail (GTK_IS_SOCKET (container), FALSE);
 460
 461   socket = GTK_SOCKET (container);
 462
 463   if (!socket->focus_in && socket->plug_window)
 464     {
 465       XEvent xevent;
 466
 467       gtk_socket_claim_focus (socket);
 468
 469       xevent.xkey.type = KeyPress;
 470       xevent.xkey.display = GDK_DISPLAY ();
 471       xevent.xkey.window = GDK_WINDOW_XWINDOW (socket->plug_window);
 472       xevent.xkey.root = GDK_ROOT_WINDOW (); /* FIXME */
 473       xevent.xkey.time = GDK_CURRENT_TIME; /* FIXME */
 474       /* FIXME, the following might cause big problems for
 475        * non-GTK apps */
 476       xevent.xkey.x = 0;
 477       xevent.xkey.y = 0;
 478       xevent.xkey.x_root = 0;
 479       xevent.xkey.y_root = 0;
 480       xevent.xkey.state = 0;
 481       xevent.xkey.same_screen = TRUE; /* FIXME ? */
 482
 483       switch (direction)
 484         {
 485         case GTK_DIR_UP:
 486           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Up);
 487           break;
 488         case GTK_DIR_DOWN:
 489           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Down);
 490           break;
 491         case GTK_DIR_LEFT:
 492           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Left);
 493           break;
 494         case GTK_DIR_RIGHT:
 495           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Right);
 496           break;
 497         case GTK_DIR_TAB_FORWARD:
 498           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Tab);
 499           break;
 500         case GTK_DIR_TAB_BACKWARD:
 501           xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(), GDK_Tab);
 502           xevent.xkey.state = ShiftMask;
 503           break;
 504         }
 505
 506
 507       gdk_error_trap_push ();
 508       XSendEvent (gdk_display,
 509                   GDK_WINDOW_XWINDOW (socket->plug_window),
 510                   False, NoEventMask, &xevent);
 511       gdk_flush();
 512       gdk_error_trap_pop ();
 513
 514       return TRUE;
 515     }
 516   else
 517     {
 518       return FALSE;
 519     }
 520 }
 521
 522 static void
 523 gtk_socket_send_configure_event (GtkSocket *socket)
 524 {
 525   XEvent event;
 526
 527   g_return_if_fail (socket->plug_window != NULL);
 528
 529   event.xconfigure.type = ConfigureNotify;
 530   event.xconfigure.display = gdk_display;
 531
 532   event.xconfigure.event = GDK_WINDOW_XWINDOW (socket->plug_window);
 533   event.xconfigure.window = GDK_WINDOW_XWINDOW (socket->plug_window);
 534
 535   event.xconfigure.x = 0;
 536   event.xconfigure.y = 0;
 537   event.xconfigure.width = GTK_WIDGET(socket)->allocation.width;
 538   event.xconfigure.height = GTK_WIDGET(socket)->allocation.height;
 539
 540   event.xconfigure.border_width = 0;
 541   event.xconfigure.above = None;
 542   event.xconfigure.override_redirect = False;
 543
 544   gdk_error_trap_push ();
 545   XSendEvent (gdk_display,
 546               GDK_WINDOW_XWINDOW (socket->plug_window),
 547               False, NoEventMask, &event);
 548   gdk_flush ();
 549   gdk_error_trap_pop ();
 550 }
 551
 552 static void
 553 gtk_socket_add_window (GtkSocket *socket, GdkNativeWindow xid)
 554 {
 555   socket->plug_window = gdk_window_lookup (xid);
 556   socket->same_app = TRUE;
 557
 558   if (!socket->plug_window)
 559     {
 560       GtkWidget *toplevel;
 561       GdkDragProtocol protocol;
 562
 563       socket->plug_window = gdk_window_foreign_new (xid);
 564       if (!socket->plug_window) /* Already gone */
 565         return;
 566
 567       socket->same_app = FALSE;
 568
 569       gdk_error_trap_push ();
 570       XSelectInput (GDK_DISPLAY (),
 571                     GDK_WINDOW_XWINDOW(socket->plug_window),
 572                     StructureNotifyMask | PropertyChangeMask);
 573
 574       if (gdk_drag_get_protocol (xid, &protocol))
 575         gtk_drag_dest_set_proxy (GTK_WIDGET (socket), socket->plug_window,
 576                                  protocol, TRUE);
 577       gdk_flush ();
 578       gdk_error_trap_pop ();
 579
 580       gdk_window_add_filter (socket->plug_window,
 581                              gtk_socket_filter_func, socket);
 582
 583       /* Add a pointer to the socket on our toplevel window */
 584
 585       toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
 586       if (toplevel && GTK_IS_WINDOW (toplevel))
 587         {
 588           gtk_window_add_embedded_xid (GTK_WINDOW (toplevel), xid);
 589         }
 590     }
 591 }
 592
 593 static GdkFilterReturn
 594 gtk_socket_filter_func (GdkXEvent *gdk_xevent, GdkEvent *event, gpointer data)
 595 {
 596   GtkSocket *socket;
 597   GtkWidget *widget;
 598   XEvent *xevent;
 599
 600   GdkFilterReturn return_val;
 601
 602   socket = GTK_SOCKET (data);
 603   widget = GTK_WIDGET (socket);
 604   xevent = (XEvent *)gdk_xevent;
 605
 606   return_val = GDK_FILTER_CONTINUE;
 607
 608   switch (xevent->type)
 609     {
 610     case CreateNotify:
 611       {
 612         XCreateWindowEvent *xcwe = &xevent->xcreatewindow;
 613
 614         if (!socket->plug_window)
 615           {
 616             gtk_socket_add_window (socket, xcwe->window);
 617
 618             gdk_error_trap_push ();
 619             gdk_window_move_resize(socket->plug_window,
 620                                    0, 0,
 621                                    widget->allocation.width,
 622                                    widget->allocation.height);
 623             gdk_flush ();
 624             gdk_error_trap_pop ();
 625
 626             socket->request_width = xcwe->width;
 627             socket->request_height = xcwe->height;
 628             socket->have_size = TRUE;
 629
 630             GTK_NOTE(PLUGSOCKET,
 631                      g_message ("GtkSocket - window created with size: %d %d",
 632                                 socket->request_width,
 633                                 socket->request_height));
 634
 635             gtk_widget_queue_resize (widget);
 636           }
 637
 638         return_val = GDK_FILTER_REMOVE;
 639
 640         break;
 641       }
 642
 643     case ConfigureRequest:
 644       {
 645         XConfigureRequestEvent *xcre = &xevent->xconfigurerequest;
 646
 647         if (!socket->plug_window)
 648           gtk_socket_add_window (socket, xcre->window);
 649
 650         if (xcre->window == GDK_WINDOW_XWINDOW (socket->plug_window))
 651           {
 652             if (xcre->value_mask & (CWWidth | CWHeight))
 653               {
 654                 socket->request_width = xcre->width;
 655                 socket->request_height = xcre->height;
 656                 socket->have_size = TRUE;
 657
 658                 GTK_NOTE(PLUGSOCKET,
 659                          g_message ("GtkSocket - configure request: %d %d",
 660                                     socket->request_width,
 661                                     socket->request_height));
 662
 663                 gtk_widget_queue_resize (widget);
 664               }
 665             else if (xcre->value_mask & (CWX | CWY))
 666               {
 667                 gtk_socket_send_configure_event (socket);
 668               }
 669             /* Ignore stacking requests. */
 670
 671             return_val = GDK_FILTER_REMOVE;
 672           }
 673         break;
 674       }
 675
 676     case DestroyNotify:
 677       {
 678         XDestroyWindowEvent *xdwe = &xevent->xdestroywindow;
 679
 680         if (socket->plug_window &&
 681             (xdwe->window == GDK_WINDOW_XWINDOW (socket->plug_window)))
 682           {
 683             GtkWidget *toplevel;
 684
 685             GTK_NOTE(PLUGSOCKET,
 686                      g_message ("GtkSocket - destroy notify"));
 687
 688             toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
 689             if (toplevel && GTK_IS_WINDOW (toplevel))
 690               gtk_window_remove_embedded_xid (GTK_WINDOW (toplevel), xdwe->window);
 691             gdk_window_destroy_notify (socket->plug_window);
 692             gtk_widget_destroy (widget);
 693
 694             socket->plug_window = NULL;
 695
 696             return_val = GDK_FILTER_REMOVE;
 697           }
 698         break;
 699     }
 700
 701     case FocusIn:
 702       if (xevent->xfocus.mode == EMBEDDED_APP_WANTS_FOCUS)
 703         {
 704           gtk_socket_claim_focus (socket);
 705         }
 706       else if (xevent->xfocus.detail == NotifyInferior)
 707         {
 708 #if 0
 709           GtkWidget *toplevel;
 710           toplevel = gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW);
 711
 712           if (toplevel)
 713             {
 714               XSetInputFocus (GDK_DISPLAY (),
 715                               GDK_WINDOW_XWINDOW (toplevel->window),
 716                               RevertToParent, CurrentTime); /* FIXME? */
 717             }
 718 #endif
 719         }
 720       return_val = GDK_FILTER_REMOVE;
 721       break;
 722     case FocusOut:
 723       return_val = GDK_FILTER_REMOVE;
 724       break;
 725     case MapRequest:
 726       if (!socket->plug_window)
 727         gtk_socket_add_window (socket, xevent->xmaprequest.window);
 728
 729       if (xevent->xmaprequest.window ==
 730           GDK_WINDOW_XWINDOW (socket->plug_window))
 731         {
 732           GTK_NOTE(PLUGSOCKET,
 733                    g_message ("GtkSocket - Map Request"));
 734
 735           gdk_error_trap_push ();
 736           gdk_window_show (socket->plug_window);
 737           gdk_flush ();
 738           gdk_error_trap_pop ();
 739
 740           return_val = GDK_FILTER_REMOVE;
 741         }
 742       break;
 743     case PropertyNotify:
 744       if (xevent->xproperty.window ==
 745           GDK_WINDOW_XWINDOW (socket->plug_window))
 746         {
 747           GdkDragProtocol protocol;
 748
 749           if ((xevent->xproperty.atom == gdk_atom_intern ("XdndAware", FALSE)) ||
 750               (xevent->xproperty.atom == gdk_atom_intern ("_MOTIF_DRAG_RECEIVER_INFO", FALSE)))
 751             {
 752               gdk_error_trap_push ();
 753               if (gdk_drag_get_protocol (xevent->xproperty.window, &protocol))
 754                 gtk_drag_dest_set_proxy (GTK_WIDGET (socket),
 755                                          socket->plug_window,
 756                                          protocol, TRUE);
 757               gdk_flush ();
 758               gdk_error_trap_pop ();
 759             }
 760           return_val = GDK_FILTER_REMOVE;
 761         }
 762     }
 763
 764   return return_val;
 765 }
 766
 767 #else
 768
 769 GtkType
 770 gtk_socket_get_type (void)
 771 {
 772   g_error ("GtkSocket not implemented");
 773   return 0;
 774 }
 775
 776 GtkWidget*
 777 gtk_socket_new ()
 778 {
 779   g_error ("GtkSocket not implemented");
 780   return NULL;
 781 }
 782
 783 void
 784 gtk_socket_steal (GtkSocket *socket, GdkNativeWindow id)
 785 {
 786   g_error ("GtkSocket not implemented");
 787 }
 788
 789 #endif /* GDK_WINDOWING */