Pileus Git - ~andy/gtk/blob - gtk/gtkplug.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free
  16  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 /* By Owen Taylor <otaylor@gtk.org>              98/4/4 */
  20
  21 /*
  22  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  23  * file for a list of people on the GTK+ Team.  See the ChangeLog
  24  * files for a list of changes.  These files are distributed with
  25  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  26  */
  27
  28 #include "gtkmain.h"
  29 #include "gtkplug.h"
  30
  31 #include "gdk/gdkkeysyms.h"
  32 #include "x11/gdkx.h"
  33
  34 #include "xembed.h"
  35
  36 static void            gtk_plug_class_init            (GtkPlugClass     *klass);
  37 static void            gtk_plug_init                  (GtkPlug          *plug);
  38 static void            gtk_plug_realize               (GtkWidget        *widget);
  39 static void            gtk_plug_unrealize             (GtkWidget        *widget);
  40 static gboolean        gtk_plug_key_press_event       (GtkWidget        *widget,
  41                                                        GdkEventKey      *event);
  42 static void            gtk_plug_forward_key_press     (GtkPlug          *plug,
  43                                                        GdkEventKey      *event);
  44 static void            gtk_plug_set_focus             (GtkWindow        *window,
  45                                                        GtkWidget        *focus);
  46 static gboolean        gtk_plug_focus                 (GtkWidget        *widget,
  47                                                        GtkDirectionType  direction);
  48 static void            gtk_plug_accel_entries_changed (GtkWindow        *window);
  49 static GdkFilterReturn gtk_plug_filter_func           (GdkXEvent        *gdk_xevent,
  50                                                        GdkEvent         *event,
  51                                                        gpointer          data);
  52
  53 static void gtk_plug_free_grabbed_keys (GHashTable *key_table);
  54 static void handle_modality_off        (GtkPlug    *plug);
  55 static void send_xembed_message        (GtkPlug    *plug,
  56                                         glong       message,
  57                                         glong       detail,
  58                                         glong       data1,
  59                                         glong       data2,
  60                                         guint32     time);
  61
  62 /* From Tk */
  63 #define EMBEDDED_APP_WANTS_FOCUS NotifyNormal+20
  64
  65 static GtkWindowClass *parent_class = NULL;
  66
  67 GtkType
  68 gtk_plug_get_type ()
  69 {
  70   static GtkType plug_type = 0;
  71
  72   if (!plug_type)
  73     {
  74       static const GTypeInfo plug_info =
  75       {
  76         sizeof (GtkPlugClass),
  77         NULL,           /* base_init */
  78         NULL,           /* base_finalize */
  79         (GClassInitFunc) gtk_plug_class_init,
  80         NULL,           /* class_finalize */
  81         NULL,           /* class_data */
  82         sizeof (GtkPlug),
  83         16,             /* n_preallocs */
  84         (GInstanceInitFunc) gtk_plug_init,
  85       };
  86
  87       plug_type = g_type_register_static (GTK_TYPE_WINDOW, "GtkPlug", &plug_info, 0);
  88     }
  89
  90   return plug_type;
  91 }
  92
  93 static void
  94 gtk_plug_class_init (GtkPlugClass *class)
  95 {
  96   GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
  97   GtkWindowClass *window_class = (GtkWindowClass *)class;
  98
  99   parent_class = gtk_type_class (GTK_TYPE_WINDOW);
 100
 101   widget_class->realize = gtk_plug_realize;
 102   widget_class->unrealize = gtk_plug_unrealize;
 103   widget_class->key_press_event = gtk_plug_key_press_event;
 104
 105  widget_class->focus = gtk_plug_focus;
 106
 107   window_class->set_focus = gtk_plug_set_focus;
 108 #if 0
 109   window_class->accel_entries_changed = gtk_plug_accel_entries_changed;
 110 #endif
 111 }
 112
 113 static void
 114 gtk_plug_init (GtkPlug *plug)
 115 {
 116   GtkWindow *window;
 117
 118   window = GTK_WINDOW (plug);
 119
 120   window->type = GTK_WINDOW_TOPLEVEL;
 121   window->auto_shrink = TRUE;
 122
 123 #if 0
 124   gtk_window_set_grab_group (window, window);
 125 #endif
 126 }
 127
 128 void
 129 gtk_plug_construct (GtkPlug *plug, GdkNativeWindow socket_id)
 130 {
 131   if (socket_id)
 132     {
 133       plug->socket_window = gdk_window_lookup (socket_id);
 134       plug->same_app = TRUE;
 135
 136       if (plug->socket_window == NULL)
 137         {
 138           plug->socket_window = gdk_window_foreign_new (socket_id);
 139           plug->same_app = FALSE;
 140         }
 141     }
 142 }
 143
 144 GtkWidget*
 145 gtk_plug_new (GdkNativeWindow socket_id)
 146 {
 147   GtkPlug *plug;
 148
 149   plug = GTK_PLUG (gtk_type_new (GTK_TYPE_PLUG));
 150   gtk_plug_construct (plug, socket_id);
 151   return GTK_WIDGET (plug);
 152 }
 153
 154 static void
 155 gtk_plug_unrealize (GtkWidget *widget)
 156 {
 157   GtkPlug *plug;
 158
 159   g_return_if_fail (widget != NULL);
 160   g_return_if_fail (GTK_IS_PLUG (widget));
 161
 162   plug = GTK_PLUG (widget);
 163
 164   if (plug->socket_window != NULL)
 165     {
 166       gdk_window_set_user_data (plug->socket_window, NULL);
 167       gdk_window_unref (plug->socket_window);
 168       plug->socket_window = NULL;
 169     }
 170
 171 #if 0
 172   if (plug->modality_window)
 173     handle_modality_off (plug);
 174 #endif
 175
 176   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 177     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 178 }
 179
 180 static void
 181 gtk_plug_realize (GtkWidget *widget)
 182 {
 183   GtkWindow *window;
 184   GtkPlug *plug;
 185   GdkWindowAttr attributes;
 186   gint attributes_mask;
 187
 188   g_return_if_fail (widget != NULL);
 189   g_return_if_fail (GTK_IS_PLUG (widget));
 190
 191   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 192   window = GTK_WINDOW (widget);
 193   plug = GTK_PLUG (widget);
 194
 195   attributes.window_type = GDK_WINDOW_CHILD;    /* XXX GDK_WINDOW_PLUG ? */
 196   attributes.title = window->title;
 197   attributes.wmclass_name = window->wmclass_name;
 198   attributes.wmclass_class = window->wmclass_class;
 199   attributes.width = widget->allocation.width;
 200   attributes.height = widget->allocation.height;
 201   attributes.wclass = GDK_INPUT_OUTPUT;
 202
 203   /* this isn't right - we should match our parent's visual/colormap.
 204    * though that will require handling "foreign" colormaps */
 205   attributes.visual = gtk_widget_get_visual (widget);
 206   attributes.colormap = gtk_widget_get_colormap (widget);
 207   attributes.event_mask = gtk_widget_get_events (widget);
 208   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 209                             GDK_KEY_PRESS_MASK |
 210                             GDK_ENTER_NOTIFY_MASK |
 211                             GDK_LEAVE_NOTIFY_MASK |
 212                             GDK_FOCUS_CHANGE_MASK |
 213                             GDK_STRUCTURE_MASK);
 214
 215   attributes_mask = GDK_WA_VISUAL | GDK_WA_COLORMAP;
 216   attributes_mask |= (window->title ? GDK_WA_TITLE : 0);
 217   attributes_mask |= (window->wmclass_name ? GDK_WA_WMCLASS : 0);
 218
 219   gdk_error_trap_push ();
 220   widget->window = gdk_window_new (plug->socket_window,
 221                                    &attributes, attributes_mask);
 222   gdk_flush ();
 223   if (gdk_error_trap_pop ()) /* Uh-oh */
 224     {
 225       gdk_error_trap_push ();
 226       gdk_window_destroy (widget->window);
 227       gdk_flush ();
 228       gdk_error_trap_pop ();
 229       widget->window = gdk_window_new (NULL, &attributes, attributes_mask);
 230     }
 231
 232   GDK_WINDOW_TYPE (widget->window) = GDK_WINDOW_TOPLEVEL;
 233   gdk_window_set_user_data (widget->window, window);
 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   gdk_window_add_filter (widget->window, gtk_plug_filter_func, widget);
 239 }
 240
 241 static gboolean
 242 gtk_plug_key_press_event (GtkWidget   *widget,
 243                           GdkEventKey *event)
 244 {
 245   if (!GTK_WINDOW (widget)->has_focus)
 246     {
 247       gtk_plug_forward_key_press (GTK_PLUG (widget), event);
 248       return TRUE;
 249     }
 250   else
 251     return GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event);
 252 }
 253
 254 static void
 255 gtk_plug_forward_key_press (GtkPlug *plug, GdkEventKey *event)
 256 {
 257   XEvent xevent;
 258
 259   xevent.xkey.type = KeyPress;
 260   xevent.xkey.display = GDK_WINDOW_XDISPLAY (GTK_WIDGET(plug)->window);
 261   xevent.xkey.window = GDK_WINDOW_XWINDOW (plug->socket_window);
 262   xevent.xkey.root = GDK_ROOT_WINDOW (); /* FIXME */
 263   xevent.xkey.time = event->time;
 264   /* FIXME, the following might cause big problems for
 265    * non-GTK apps */
 266   xevent.xkey.x = 0;
 267   xevent.xkey.y = 0;
 268   xevent.xkey.x_root = 0;
 269   xevent.xkey.y_root = 0;
 270   xevent.xkey.state = event->state;
 271   xevent.xkey.keycode =  XKeysymToKeycode(GDK_DISPLAY(),
 272                                           event->keyval);
 273   xevent.xkey.same_screen = TRUE; /* FIXME ? */
 274
 275   gdk_error_trap_push ();
 276   XSendEvent (gdk_display,
 277               GDK_WINDOW_XWINDOW (plug->socket_window),
 278               False, NoEventMask, &xevent);
 279   gdk_flush ();
 280   gdk_error_trap_pop ();
 281 }
 282
 283 static void
 284 gtk_plug_set_focus (GtkWindow *window,
 285                     GtkWidget *focus)
 286 {
 287   GtkPlug *plug = GTK_PLUG (window);
 288
 289   GTK_WINDOW_CLASS (parent_class)->set_focus (window, focus);
 290
 291   /* Ask for focus from embedder
 292    */
 293
 294   if (focus && !window->has_focus)
 295     {
 296 #if 0
 297       XEvent xevent;
 298
 299       xevent.xfocus.type = FocusIn;
 300       xevent.xfocus.display = GDK_WINDOW_XDISPLAY (GTK_WIDGET(plug)->window);
 301       xevent.xfocus.window = GDK_WINDOW_XWINDOW (plug->socket_window);
 302       xevent.xfocus.mode = EMBEDDED_APP_WANTS_FOCUS;
 303       xevent.xfocus.detail = FALSE; /* Don't force */
 304
 305       gdk_error_trap_push ();
 306       XSendEvent (gdk_display,
 307                   GDK_WINDOW_XWINDOW (plug->socket_window),
 308                   False, NoEventMask, &xevent);
 309       gdk_flush ();
 310       gdk_error_trap_pop ();
 311 #endif
 312
 313       send_xembed_message (plug, XEMBED_REQUEST_FOCUS, 0, 0, 0,
 314                            gtk_get_current_event_time ());
 315     }
 316 }
 317
 318 #if 0
 319
 320 typedef struct
 321 {
 322   guint                  accelerator_key;
 323   GdkModifierType        accelerator_mods;
 324 } GrabbedKey;
 325
 326 static guint
 327 grabbed_key_hash (gconstpointer a)
 328 {
 329   const GrabbedKey *key = a;
 330   guint h;
 331
 332   h = key->accelerator_key << 16;
 333   h ^= key->accelerator_key >> 16;
 334   h ^= key->accelerator_mods;
 335
 336   return h;
 337 }
 338
 339 static gboolean
 340 grabbed_key_equal (gconstpointer a, gconstpointer b)
 341 {
 342   const GrabbedKey *keya = a;
 343   const GrabbedKey *keyb = b;
 344
 345   return (keya->accelerator_key == keyb->accelerator_key &&
 346           keya->accelerator_mods == keyb->accelerator_mods);
 347 }
 348
 349 static void
 350 add_grabbed_keys (gpointer key, gpointer val, gpointer data)
 351 {
 352   GrabbedKey *grabbed_key = key;
 353   GtkPlug *plug = data;
 354
 355   if (!plug->grabbed_keys ||
 356       !g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
 357     {
 358       send_xembed_message (plug, XEMBED_GRAB_KEY, 0,
 359                            grabbed_key->accelerator_key, grabbed_key->accelerator_mods,
 360                            gtk_get_current_event_time ());
 361     }
 362 }
 363
 364 static void
 365 remove_grabbed_keys (gpointer key, gpointer val, gpointer data)
 366 {
 367   GrabbedKey *grabbed_key = key;
 368   GtkPlug *plug = data;
 369
 370   if (!plug->grabbed_keys ||
 371       !g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
 372     {
 373       send_xembed_message (plug, XEMBED_UNGRAB_KEY, 0,
 374                            grabbed_key->accelerator_key, grabbed_key->accelerator_mods,
 375                            gtk_get_current_event_time ());
 376     }
 377 }
 378
 379 static void
 380 gtk_plug_free_grabbed_keys (GHashTable *key_table)
 381 {
 382   g_hash_table_foreach (key_table, (GHFunc)g_free, NULL);
 383   g_hash_table_destroy (key_table);
 384 }
 385
 386 static void
 387 gtk_plug_accel_entries_changed (GtkWindow *window)
 388 {
 389   GHashTable *new_grabbed_keys, *old_grabbed_keys;
 390   GSList *accel_groups, *tmp_list;
 391   GtkPlug *plug = GTK_PLUG (window);
 392
 393   new_grabbed_keys = g_hash_table_new (grabbed_key_hash, grabbed_key_equal);
 394
 395   accel_groups = gtk_accel_groups_from_object (GTK_OBJECT (window));
 396
 397   tmp_list = accel_groups;
 398
 399   while (tmp_list)
 400     {
 401       GtkAccelGroup *accel_group = tmp_list->data;
 402       gint i, n_entries;
 403       GtkAccelEntry *entries;
 404
 405       gtk_accel_group_get_entries (accel_group, &entries, &n_entries);
 406
 407       for (i = 0; i < n_entries; i++)
 408         {
 409           GdkKeymapKey *keys;
 410           gint n_keys;
 411
 412           if (gdk_keymap_get_entries_for_keyval (NULL, entries[i].accelerator_key, &keys, &n_keys))
 413             {
 414               GrabbedKey *key = g_new (GrabbedKey, 1);
 415
 416               key->accelerator_key = keys[0].keycode;
 417               key->accelerator_mods = entries[i].accelerator_mods;
 418
 419               g_hash_table_insert (new_grabbed_keys, key, key);
 420
 421               g_free (keys);
 422             }
 423         }
 424
 425       tmp_list = tmp_list->next;
 426     }
 427
 428   g_hash_table_foreach (new_grabbed_keys, add_grabbed_keys, plug);
 429
 430   old_grabbed_keys = plug->grabbed_keys;
 431   plug->grabbed_keys = new_grabbed_keys;
 432
 433   if (old_grabbed_keys)
 434     {
 435       g_hash_table_foreach (old_grabbed_keys, remove_grabbed_keys, plug);
 436       gtk_plug_free_grabbed_keys (old_grabbed_keys);
 437     }
 438
 439 }
 440 #endif
 441
 442 static gboolean
 443 gtk_plug_focus (GtkWidget        *widget,
 444                 GtkDirectionType  direction)
 445 {
 446   GtkBin *bin = GTK_BIN (widget);
 447   GtkPlug *plug = GTK_PLUG (widget);
 448   GtkWindow *window = GTK_WINDOW (widget);
 449   GtkContainer *container = GTK_CONTAINER (widget);
 450   GtkWidget *old_focus_child = container->focus_child;
 451   GtkWidget *parent;
 452
 453   /* We override GtkWindow's behavior, since we don't want wrapping here.
 454    */
 455   if (old_focus_child)
 456     {
 457       if (gtk_widget_child_focus (old_focus_child, direction))
 458         return TRUE;
 459
 460       if (window->focus_widget)
 461         {
 462           /* Wrapped off the end, clear the focus setting for the toplevel */
 463           parent = window->focus_widget->parent;
 464           while (parent)
 465             {
 466               gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 467               parent = GTK_WIDGET (parent)->parent;
 468             }
 469
 470           gtk_window_set_focus (GTK_WINDOW (container), NULL);
 471
 472           if (!GTK_CONTAINER (window)->focus_child)
 473             {
 474               gint message = -1;
 475
 476               switch (direction)
 477                 {
 478                 case GTK_DIR_UP:
 479                 case GTK_DIR_LEFT:
 480                 case GTK_DIR_TAB_BACKWARD:
 481                   message = XEMBED_FOCUS_PREV;
 482                   break;
 483                 case GTK_DIR_DOWN:
 484                 case GTK_DIR_RIGHT:
 485                 case GTK_DIR_TAB_FORWARD:
 486                   message = XEMBED_FOCUS_NEXT;
 487                   break;
 488                 }
 489
 490               send_xembed_message (plug, message, 0, 0, 0,
 491                                    gtk_get_current_event_time ());
 492
 493 #if 0
 494               gtk_window_set_focus (GTK_WINDOW (widget), NULL);
 495
 496               gdk_error_trap_push ();
 497               XSetInputFocus (GDK_DISPLAY (),
 498                               GDK_WINDOW_XWINDOW (plug->socket_window),
 499                               RevertToParent, event->time);
 500               gdk_flush ();
 501               gdk_error_trap_pop ();
 502
 503               gtk_plug_forward_key_press (plug, event);
 504 #endif
 505             }
 506         }
 507
 508       return FALSE;
 509     }
 510   else
 511     {
 512       /* Try to focus the first widget in the window */
 513
 514       if (gtk_widget_child_focus (bin->child, direction))
 515         return TRUE;
 516     }
 517
 518   return FALSE;
 519 }
 520
 521 static void
 522 send_xembed_message (GtkPlug *plug,
 523                      glong      message,
 524                      glong      detail,
 525                      glong      data1,
 526                      glong      data2,
 527                      guint32    time)
 528 {
 529   if (plug->socket_window)
 530     {
 531       XEvent xevent;
 532
 533       xevent.xclient.window = GDK_WINDOW_XWINDOW (plug->socket_window);
 534       xevent.xclient.type = ClientMessage;
 535       xevent.xclient.message_type = gdk_atom_intern ("_XEMBED", FALSE);
 536       xevent.xclient.format = 32;
 537       xevent.xclient.data.l[0] = time;
 538       xevent.xclient.data.l[1] = message;
 539       xevent.xclient.data.l[2] = detail;
 540       xevent.xclient.data.l[3] = data1;
 541       xevent.xclient.data.l[4] = data2;
 542
 543       gdk_error_trap_push ();
 544       XSendEvent (gdk_display,
 545                   GDK_WINDOW_XWINDOW (plug->socket_window),
 546                   False, NoEventMask, &xevent);
 547       gdk_flush ();
 548       gdk_error_trap_pop ();
 549     }
 550 }
 551
 552 static void
 553 focus_first_last (GtkPlug          *plug,
 554                   GtkDirectionType  direction)
 555 {
 556   GtkWindow *window = GTK_WINDOW (plug);
 557   GtkWidget *parent;
 558
 559   if (window->focus_widget)
 560     {
 561       parent = window->focus_widget->parent;
 562       while (parent)
 563         {
 564           gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 565           parent = GTK_WIDGET (parent)->parent;
 566         }
 567
 568       gtk_window_set_focus (GTK_WINDOW (plug), NULL);
 569     }
 570
 571   gtk_widget_child_focus (GTK_WIDGET (plug), direction);
 572 }
 573
 574 static void
 575 handle_modality_on (GtkPlug *plug)
 576 {
 577 #if 0
 578   if (!plug->modality_window)
 579     {
 580       plug->modality_window = gtk_window_new (GTK_WINDOW_POPUP);
 581       gtk_window_set_grab_group (GTK_WINDOW (plug->modality_window), GTK_WINDOW (plug));
 582       gtk_grab_add (plug->modality_window);
 583     }
 584 #endif
 585 }
 586
 587 static void
 588 handle_modality_off (GtkPlug *plug)
 589 {
 590 #if 0
 591   if (plug->modality_window)
 592     {
 593       gtk_grab_remove (plug->modality_window);
 594       gtk_widget_destroy (plug->modality_window);
 595       plug->modality_window = NULL;
 596     }
 597 #endif
 598 }
 599
 600 static void
 601 handle_xembed_message (GtkPlug   *plug,
 602                        glong      message,
 603                        glong      detail,
 604                        glong      data1,
 605                        glong      data2,
 606                        guint32    time)
 607 {
 608   GTK_NOTE (PLUGSOCKET,
 609             g_message ("Message of type %ld received", message));
 610
 611   switch (message)
 612     {
 613     case XEMBED_EMBEDDED_NOTIFY:
 614       break;
 615     case XEMBED_WINDOW_ACTIVATE:
 616       GTK_NOTE(PLUGSOCKET,
 617                g_message ("GtkPlug: ACTIVATE received"));
 618       break;
 619     case XEMBED_WINDOW_DEACTIVATE:
 620       GTK_NOTE(PLUGSOCKET,
 621                g_message ("GtkPlug: DEACTIVATE received"));
 622       break;
 623
 624     case XEMBED_MODALITY_ON:
 625       handle_modality_on (plug);
 626       break;
 627     case XEMBED_MODALITY_OFF:
 628       handle_modality_off (plug);
 629       break;
 630
 631     case XEMBED_FOCUS_IN:
 632       switch (detail)
 633         {
 634         case XEMBED_FOCUS_FIRST:
 635           focus_first_last (plug, GTK_DIR_TAB_FORWARD);
 636           break;
 637         case XEMBED_FOCUS_LAST:
 638           focus_first_last (plug, GTK_DIR_TAB_BACKWARD);
 639           break;
 640         case XEMBED_FOCUS_CURRENT:
 641           /* fall through */;
 642         }
 643
 644     case XEMBED_FOCUS_OUT:
 645       {
 646         GdkEvent event;
 647
 648         event.focus_change.type = GDK_FOCUS_CHANGE;
 649         event.focus_change.window = GTK_WIDGET (plug)->window;
 650         event.focus_change.send_event = TRUE;
 651         event.focus_change.in = (message == XEMBED_FOCUS_IN);
 652
 653         gtk_widget_event (GTK_WIDGET (plug), &event);
 654
 655         break;
 656       }
 657
 658     case XEMBED_REQUEST_FOCUS:
 659     case XEMBED_FOCUS_NEXT:
 660     case XEMBED_FOCUS_PREV:
 661     case XEMBED_GRAB_KEY:
 662     case XEMBED_UNGRAB_KEY:
 663       g_warning ("GtkPlug: Invalid _XEMBED message of type %ld received", message);
 664       break;
 665
 666     default:
 667       GTK_NOTE(PLUGSOCKET,
 668                g_message ("GtkPlug: Ignoring unknown _XEMBED message of type %ld", message));
 669       break;
 670     }
 671 }
 672
 673 static GdkFilterReturn
 674 gtk_plug_filter_func (GdkXEvent *gdk_xevent, GdkEvent *event, gpointer data)
 675 {
 676   GtkPlug *plug = GTK_PLUG (data);
 677   XEvent *xevent = (XEvent *)gdk_xevent;
 678
 679   GdkFilterReturn return_val;
 680
 681   return_val = GDK_FILTER_CONTINUE;
 682
 683   switch (xevent->type)
 684     {
 685     case ClientMessage:
 686       if (xevent->xclient.message_type == gdk_atom_intern ("_XEMBED", FALSE))
 687         {
 688           handle_xembed_message (plug,
 689                                  xevent->xclient.data.l[1],
 690                                  xevent->xclient.data.l[2],
 691                                  xevent->xclient.data.l[3],
 692                                  xevent->xclient.data.l[4],
 693                                  xevent->xclient.data.l[0]);
 694
 695
 696           return GDK_FILTER_REMOVE;
 697         }
 698       break;
 699     }
 700
 701   return GDK_FILTER_CONTINUE;
 702 }