Pileus Git - ~andy/gtk/blob - gdk/x11/gdkdisplay-x11.c

   1 /* GDK - The GIMP Drawing Kit
   2  * gdkdisplay-x11.c
   3  *
   4  * Copyright 2001 Sun Microsystems Inc.
   5  * Copyright (C) 2004 Nokia Corporation
   6  *
   7  * Erwann Chenede <erwann.chenede@sun.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Library General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Library General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Library General Public
  20  * License along with this library; if not, write to the
  21  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22  * Boston, MA 02111-1307, USA.
  23  */
  24
  25 #include "config.h"
  26
  27 #include "gdkasync.h"
  28 #include "gdkdisplay.h"
  29 #include "gdkeventsource.h"
  30 #include "gdkeventtranslator.h"
  31 #include "gdkinternals.h"
  32 #include "gdkscreen.h"
  33 #include "gdkinternals.h"
  34 #include "gdkdeviceprivate.h"
  35 #include "gdkkeysprivate.h"
  36 #include "gdkdevicemanager.h"
  37 #include "xsettings-client.h"
  38 #include "gdkdisplay-x11.h"
  39 #include "gdkprivate-x11.h"
  40 #include "gdkscreen-x11.h"
  41
  42 #include <glib.h>
  43 #include <glib/gprintf.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #include <errno.h>
  47 #include <unistd.h>
  48
  49 #include <X11/Xatom.h>
  50
  51 #ifdef HAVE_XKB
  52 #include <X11/XKBlib.h>
  53 #endif
  54
  55 #ifdef HAVE_XFIXES
  56 #include <X11/extensions/Xfixes.h>
  57 #endif
  58
  59 #include <X11/extensions/shape.h>
  60
  61 #ifdef HAVE_XCOMPOSITE
  62 #include <X11/extensions/Xcomposite.h>
  63 #endif
  64
  65 #ifdef HAVE_XDAMAGE
  66 #include <X11/extensions/Xdamage.h>
  67 #endif
  68
  69 #ifdef HAVE_RANDR
  70 #include <X11/extensions/Xrandr.h>
  71 #endif
  72
  73 typedef struct _GdkErrorTrap  GdkErrorTrap;
  74
  75 struct _GdkErrorTrap
  76 {
  77   /* Next sequence when trap was pushed, i.e. first sequence to
  78    * ignore
  79    */
  80   gulong start_sequence;
  81
  82   /* Next sequence when trap was popped, i.e. first sequence
  83    * to not ignore. 0 if trap is still active.
  84    */
  85   gulong end_sequence;
  86
  87   /* Most recent error code within the sequence */
  88   int error_code;
  89 };
  90
  91 static void   gdk_x11_display_dispose            (GObject            *object);
  92 static void   gdk_x11_display_finalize           (GObject            *object);
  93
  94 static void     gdk_x11_display_event_translator_init (GdkEventTranslatorIface *iface);
  95
  96 static gboolean gdk_x11_display_translate_event (GdkEventTranslator *translator,
  97                                                  GdkDisplay         *display,
  98                                                  GdkEvent           *event,
  99                                                  XEvent             *xevent);
 100
 101 #ifdef HAVE_X11R6
 102 static void gdk_internal_connection_watch (Display  *display,
 103                                            XPointer  arg,
 104                                            gint      fd,
 105                                            gboolean  opening,
 106                                            XPointer *watch_data);
 107 #endif /* HAVE_X11R6 */
 108
 109 typedef struct _GdkEventTypeX11 GdkEventTypeX11;
 110
 111 struct _GdkEventTypeX11
 112 {
 113   gint base;
 114   gint n_events;
 115 };
 116
 117 /* Note that we never *directly* use WM_LOCALE_NAME, WM_PROTOCOLS,
 118  * but including them here has the side-effect of getting them
 119  * into the internal Xlib cache
 120  */
 121 static const char *const precache_atoms[] = {
 122   "UTF8_STRING",
 123   "WM_CLIENT_LEADER",
 124   "WM_DELETE_WINDOW",
 125   "WM_ICON_NAME",
 126   "WM_LOCALE_NAME",
 127   "WM_NAME",
 128   "WM_PROTOCOLS",
 129   "WM_TAKE_FOCUS",
 130   "WM_WINDOW_ROLE",
 131   "_NET_ACTIVE_WINDOW",
 132   "_NET_CURRENT_DESKTOP",
 133   "_NET_FRAME_EXTENTS",
 134   "_NET_STARTUP_ID",
 135   "_NET_WM_CM_S0",
 136   "_NET_WM_DESKTOP",
 137   "_NET_WM_ICON",
 138   "_NET_WM_ICON_NAME",
 139   "_NET_WM_NAME",
 140   "_NET_WM_PID",
 141   "_NET_WM_PING",
 142   "_NET_WM_STATE",
 143   "_NET_WM_STATE_ABOVE",
 144   "_NET_WM_STATE_BELOW",
 145   "_NET_WM_STATE_FULLSCREEN",
 146   "_NET_WM_STATE_MODAL",
 147   "_NET_WM_STATE_MAXIMIZED_VERT",
 148   "_NET_WM_STATE_MAXIMIZED_HORZ",
 149   "_NET_WM_STATE_SKIP_TASKBAR",
 150   "_NET_WM_STATE_SKIP_PAGER",
 151   "_NET_WM_STATE_STICKY",
 152   "_NET_WM_SYNC_REQUEST",
 153   "_NET_WM_SYNC_REQUEST_COUNTER",
 154   "_NET_WM_WINDOW_TYPE",
 155   "_NET_WM_WINDOW_TYPE_NORMAL",
 156   "_NET_WM_USER_TIME",
 157   "_NET_VIRTUAL_ROOTS",
 158   "GDK_SELECTION"
 159 };
 160
 161 static char *gdk_sm_client_id;
 162
 163 G_DEFINE_TYPE_WITH_CODE (GdkX11Display, gdk_x11_display, GDK_TYPE_DISPLAY,
 164                          G_IMPLEMENT_INTERFACE (GDK_TYPE_EVENT_TRANSLATOR,
 165                                                 gdk_x11_display_event_translator_init))
 166
 167
 168 static void
 169 gdk_x11_display_init (GdkX11Display *display)
 170 {
 171   _gdk_x11_display_manager_add_display (gdk_display_manager_get (),
 172                                         GDK_DISPLAY (display));
 173 }
 174
 175 static void
 176 gdk_x11_display_event_translator_init (GdkEventTranslatorIface *iface)
 177 {
 178   iface->translate_event = gdk_x11_display_translate_event;
 179 }
 180
 181 static void
 182 do_net_wm_state_changes (GdkWindow *window)
 183 {
 184   GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window);
 185   GdkWindowState old_state;
 186
 187   if (GDK_WINDOW_DESTROYED (window) ||
 188       gdk_window_get_window_type (window) != GDK_WINDOW_TOPLEVEL)
 189     return;
 190
 191   old_state = gdk_window_get_state (window);
 192
 193   /* For found_sticky to remain TRUE, we have to also be on desktop
 194    * 0xFFFFFFFF
 195    */
 196   if (old_state & GDK_WINDOW_STATE_STICKY)
 197     {
 198       if (!(toplevel->have_sticky && toplevel->on_all_desktops))
 199         gdk_synthesize_window_state (window,
 200                                      GDK_WINDOW_STATE_STICKY,
 201                                      0);
 202     }
 203   else
 204     {
 205       if (toplevel->have_sticky || toplevel->on_all_desktops)
 206         gdk_synthesize_window_state (window,
 207                                      0,
 208                                      GDK_WINDOW_STATE_STICKY);
 209     }
 210
 211   if (old_state & GDK_WINDOW_STATE_FULLSCREEN)
 212     {
 213       if (!toplevel->have_fullscreen)
 214         gdk_synthesize_window_state (window,
 215                                      GDK_WINDOW_STATE_FULLSCREEN,
 216                                      0);
 217     }
 218   else
 219     {
 220       if (toplevel->have_fullscreen)
 221         gdk_synthesize_window_state (window,
 222                                      0,
 223                                      GDK_WINDOW_STATE_FULLSCREEN);
 224     }
 225
 226   /* Our "maximized" means both vertical and horizontal; if only one,
 227    * we don't expose that via GDK
 228    */
 229   if (old_state & GDK_WINDOW_STATE_MAXIMIZED)
 230     {
 231       if (!(toplevel->have_maxvert && toplevel->have_maxhorz))
 232         gdk_synthesize_window_state (window,
 233                                      GDK_WINDOW_STATE_MAXIMIZED,
 234                                      0);
 235     }
 236   else
 237     {
 238       if (toplevel->have_maxvert && toplevel->have_maxhorz)
 239         gdk_synthesize_window_state (window,
 240                                      0,
 241                                      GDK_WINDOW_STATE_MAXIMIZED);
 242     }
 243 }
 244
 245 static void
 246 gdk_check_wm_desktop_changed (GdkWindow *window)
 247 {
 248   GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window);
 249   GdkDisplay *display = GDK_WINDOW_DISPLAY (window);
 250
 251   Atom type;
 252   gint format;
 253   gulong nitems;
 254   gulong bytes_after;
 255   guchar *data;
 256   gulong *desktop;
 257
 258   type = None;
 259   gdk_x11_display_error_trap_push (display);
 260   XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display),
 261                       GDK_WINDOW_XID (window),
 262                       gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP"),
 263                       0, G_MAXLONG, False, XA_CARDINAL, &type,
 264                       &format, &nitems,
 265                       &bytes_after, &data);
 266   gdk_x11_display_error_trap_pop_ignored (display);
 267
 268   if (type != None)
 269     {
 270       desktop = (gulong *)data;
 271       toplevel->on_all_desktops = (*desktop == 0xFFFFFFFF);
 272       XFree (desktop);
 273     }
 274   else
 275     toplevel->on_all_desktops = FALSE;
 276
 277   do_net_wm_state_changes (window);
 278 }
 279
 280 static void
 281 gdk_check_wm_state_changed (GdkWindow *window)
 282 {
 283   GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window);
 284   GdkDisplay *display = GDK_WINDOW_DISPLAY (window);
 285
 286   Atom type;
 287   gint format;
 288   gulong nitems;
 289   gulong bytes_after;
 290   guchar *data;
 291   Atom *atoms = NULL;
 292   gulong i;
 293
 294   gboolean had_sticky = toplevel->have_sticky;
 295
 296   toplevel->have_sticky = FALSE;
 297   toplevel->have_maxvert = FALSE;
 298   toplevel->have_maxhorz = FALSE;
 299   toplevel->have_fullscreen = FALSE;
 300
 301   type = None;
 302   gdk_x11_display_error_trap_push (display);
 303   XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (window),
 304                       gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE"),
 305                       0, G_MAXLONG, False, XA_ATOM, &type, &format, &nitems,
 306                       &bytes_after, &data);
 307   gdk_x11_display_error_trap_pop_ignored (display);
 308
 309   if (type != None)
 310     {
 311       Atom sticky_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_STICKY");
 312       Atom maxvert_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_MAXIMIZED_VERT");
 313       Atom maxhorz_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_MAXIMIZED_HORZ");
 314       Atom fullscreen_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_FULLSCREEN");
 315
 316       atoms = (Atom *)data;
 317
 318       i = 0;
 319       while (i < nitems)
 320         {
 321           if (atoms[i] == sticky_atom)
 322             toplevel->have_sticky = TRUE;
 323           else if (atoms[i] == maxvert_atom)
 324             toplevel->have_maxvert = TRUE;
 325           else if (atoms[i] == maxhorz_atom)
 326             toplevel->have_maxhorz = TRUE;
 327           else if (atoms[i] == fullscreen_atom)
 328             toplevel->have_fullscreen = TRUE;
 329
 330           ++i;
 331         }
 332
 333       XFree (atoms);
 334     }
 335
 336   /* When have_sticky is turned on, we have to check the DESKTOP property
 337    * as well.
 338    */
 339   if (toplevel->have_sticky && !had_sticky)
 340     gdk_check_wm_desktop_changed (window);
 341   else
 342     do_net_wm_state_changes (window);
 343 }
 344
 345 static GdkWindow *
 346 get_event_window (GdkEventTranslator *translator,
 347                   XEvent             *xevent)
 348 {
 349   GdkDisplay *display;
 350   Window xwindow;
 351
 352   display = (GdkDisplay *) translator;
 353
 354   switch (xevent->type)
 355     {
 356     case DestroyNotify:
 357       xwindow = xevent->xdestroywindow.window;
 358       break;
 359     case UnmapNotify:
 360       xwindow = xevent->xunmap.window;
 361       break;
 362     case MapNotify:
 363       xwindow = xevent->xmap.window;
 364       break;
 365     case ConfigureNotify:
 366       xwindow = xevent->xconfigure.window;
 367       break;
 368     default:
 369       xwindow = xevent->xany.window;
 370     }
 371
 372   return gdk_x11_window_lookup_for_display (display, xwindow);
 373 }
 374
 375 static gboolean
 376 gdk_x11_display_translate_event (GdkEventTranslator *translator,
 377                                  GdkDisplay         *display,
 378                                  GdkEvent           *event,
 379                                  XEvent             *xevent)
 380 {
 381   GdkWindow *window;
 382   GdkWindowImplX11 *window_impl = NULL;
 383   GdkScreen *screen = NULL;
 384   GdkX11Screen *x11_screen = NULL;
 385   GdkToplevelX11 *toplevel = NULL;
 386   GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
 387   gboolean return_val;
 388
 389   /* Find the GdkWindow that this event relates to.
 390    * Basically this means substructure events
 391    * are reported same as structure events
 392    */
 393   window = get_event_window (translator, xevent);
 394
 395   if (window)
 396     {
 397       /* We may receive events such as NoExpose/GraphicsExpose
 398        * and ShmCompletion for pixmaps
 399        */
 400       if (!GDK_IS_WINDOW (window))
 401         return FALSE;
 402
 403       screen = GDK_WINDOW_SCREEN (window);
 404       x11_screen = GDK_X11_SCREEN (screen);
 405       toplevel = _gdk_x11_window_get_toplevel (window);
 406       window_impl = GDK_WINDOW_IMPL_X11 (window->impl);
 407
 408       g_object_ref (window);
 409     }
 410
 411   event->any.window = window;
 412   event->any.send_event = xevent->xany.send_event ? TRUE : FALSE;
 413
 414   if (window && GDK_WINDOW_DESTROYED (window))
 415     {
 416       if (xevent->type != DestroyNotify)
 417         {
 418           return_val = FALSE;
 419           goto done;
 420         }
 421     }
 422
 423   if (xevent->type == DestroyNotify)
 424     {
 425       int i, n;
 426
 427       n = gdk_display_get_n_screens (display);
 428       for (i = 0; i < n; i++)
 429         {
 430           screen = gdk_display_get_screen (display, i);
 431           x11_screen = GDK_X11_SCREEN (screen);
 432
 433           if (x11_screen->wmspec_check_window == xevent->xdestroywindow.window)
 434             {
 435               x11_screen->wmspec_check_window = None;
 436               x11_screen->last_wmspec_check_time = 0;
 437               g_free (x11_screen->window_manager_name);
 438               x11_screen->window_manager_name = g_strdup ("unknown");
 439
 440               /* careful, reentrancy */
 441               _gdk_x11_screen_window_manager_changed (screen);
 442
 443               return_val = FALSE;
 444               goto done;
 445             }
 446         }
 447     }
 448
 449   /* We do a "manual" conversion of the XEvent to a
 450    *  GdkEvent. The structures are mostly the same so
 451    *  the conversion is fairly straightforward. We also
 452    *  optionally print debugging info regarding events
 453    *  received.
 454    */
 455
 456   return_val = TRUE;
 457
 458   switch (xevent->type)
 459     {
 460     case KeymapNotify:
 461       GDK_NOTE (EVENTS,
 462                 g_message ("keymap notify"));
 463
 464       /* Not currently handled */
 465       return_val = FALSE;
 466       break;
 467
 468     case Expose:
 469       GDK_NOTE (EVENTS,
 470                 g_message ("expose:\t\twindow: %ld  %d  x,y: %d %d  w,h: %d %d%s",
 471                            xevent->xexpose.window, xevent->xexpose.count,
 472                            xevent->xexpose.x, xevent->xexpose.y,
 473                            xevent->xexpose.width, xevent->xexpose.height,
 474                            event->any.send_event ? " (send)" : ""));
 475
 476       if (window == NULL)
 477         {
 478           return_val = FALSE;
 479           break;
 480         }
 481
 482       {
 483         GdkRectangle expose_rect;
 484
 485         expose_rect.x = xevent->xexpose.x;
 486         expose_rect.y = xevent->xexpose.y;
 487         expose_rect.width = xevent->xexpose.width;
 488         expose_rect.height = xevent->xexpose.height;
 489
 490         _gdk_x11_window_process_expose (window, xevent->xexpose.serial, &expose_rect);
 491         return_val = FALSE;
 492       }
 493
 494       break;
 495
 496     case GraphicsExpose:
 497       {
 498         GdkRectangle expose_rect;
 499
 500         GDK_NOTE (EVENTS,
 501                   g_message ("graphics expose:\tdrawable: %ld",
 502                              xevent->xgraphicsexpose.drawable));
 503
 504         if (window == NULL)
 505           {
 506             return_val = FALSE;
 507             break;
 508           }
 509
 510         expose_rect.x = xevent->xgraphicsexpose.x;
 511         expose_rect.y = xevent->xgraphicsexpose.y;
 512         expose_rect.width = xevent->xgraphicsexpose.width;
 513         expose_rect.height = xevent->xgraphicsexpose.height;
 514
 515         _gdk_x11_window_process_expose (window, xevent->xgraphicsexpose.serial, &expose_rect);
 516         return_val = FALSE;
 517       }
 518       break;
 519
 520     case VisibilityNotify:
 521 #ifdef G_ENABLE_DEBUG
 522       if (_gdk_debug_flags & GDK_DEBUG_EVENTS)
 523         switch (xevent->xvisibility.state)
 524           {
 525           case VisibilityFullyObscured:
 526             g_message ("visibility notify:\twindow: %ld  none",
 527                        xevent->xvisibility.window);
 528             break;
 529           case VisibilityPartiallyObscured:
 530             g_message ("visibility notify:\twindow: %ld  partial",
 531                        xevent->xvisibility.window);
 532             break;
 533           case VisibilityUnobscured:
 534             g_message ("visibility notify:\twindow: %ld  full",
 535                        xevent->xvisibility.window);
 536             break;
 537           }
 538 #endif /* G_ENABLE_DEBUG */
 539
 540       if (window == NULL)
 541         {
 542           return_val = FALSE;
 543           break;
 544         }
 545
 546       event->visibility.type = GDK_VISIBILITY_NOTIFY;
 547       event->visibility.window = window;
 548
 549       switch (xevent->xvisibility.state)
 550         {
 551         case VisibilityFullyObscured:
 552           event->visibility.state = GDK_VISIBILITY_FULLY_OBSCURED;
 553           break;
 554
 555         case VisibilityPartiallyObscured:
 556           event->visibility.state = GDK_VISIBILITY_PARTIAL;
 557           break;
 558
 559         case VisibilityUnobscured:
 560           event->visibility.state = GDK_VISIBILITY_UNOBSCURED;
 561           break;
 562         }
 563
 564       break;
 565
 566     case CreateNotify:
 567       GDK_NOTE (EVENTS,
 568                 g_message ("create notify:\twindow: %ld  x,y: %d %d     w,h: %d %d  b-w: %d  parent: %ld         ovr: %d",
 569                            xevent->xcreatewindow.window,
 570                            xevent->xcreatewindow.x,
 571                            xevent->xcreatewindow.y,
 572                            xevent->xcreatewindow.width,
 573                            xevent->xcreatewindow.height,
 574                            xevent->xcreatewindow.border_width,
 575                            xevent->xcreatewindow.parent,
 576                            xevent->xcreatewindow.override_redirect));
 577       /* not really handled */
 578       break;
 579
 580     case DestroyNotify:
 581       GDK_NOTE (EVENTS,
 582                 g_message ("destroy notify:\twindow: %ld",
 583                            xevent->xdestroywindow.window));
 584
 585       /* Ignore DestroyNotify from SubstructureNotifyMask */
 586       if (xevent->xdestroywindow.window == xevent->xdestroywindow.event)
 587         {
 588           event->any.type = GDK_DESTROY;
 589           event->any.window = window;
 590
 591           return_val = window && !GDK_WINDOW_DESTROYED (window);
 592
 593           if (window && GDK_WINDOW_XID (window) != x11_screen->xroot_window)
 594             gdk_window_destroy_notify (window);
 595         }
 596       else
 597         return_val = FALSE;
 598
 599       break;
 600
 601     case UnmapNotify:
 602       GDK_NOTE (EVENTS,
 603                 g_message ("unmap notify:\t\twindow: %ld",
 604                            xevent->xmap.window));
 605
 606       event->any.type = GDK_UNMAP;
 607       event->any.window = window;
 608
 609       /* If we are shown (not withdrawn) and get an unmap, it means we
 610        * were iconified in the X sense. If we are withdrawn, and get
 611        * an unmap, it means we hid the window ourselves, so we
 612        * will have already flipped the iconified bit off.
 613        */
 614       if (window)
 615         {
 616           if (GDK_WINDOW_IS_MAPPED (window))
 617             gdk_synthesize_window_state (window,
 618                                          0,
 619                                          GDK_WINDOW_STATE_ICONIFIED);
 620
 621           _gdk_x11_window_grab_check_unmap (window, xevent->xany.serial);
 622         }
 623
 624       break;
 625
 626     case MapNotify:
 627       GDK_NOTE (EVENTS,
 628                 g_message ("map notify:\t\twindow: %ld",
 629                            xevent->xmap.window));
 630
 631       event->any.type = GDK_MAP;
 632       event->any.window = window;
 633
 634       /* Unset iconified if it was set */
 635       if (window && (window->state & GDK_WINDOW_STATE_ICONIFIED))
 636         gdk_synthesize_window_state (window,
 637                                      GDK_WINDOW_STATE_ICONIFIED,
 638                                      0);
 639
 640       break;
 641
 642     case ReparentNotify:
 643       GDK_NOTE (EVENTS,
 644                 g_message ("reparent notify:\twindow: %ld  x,y: %d %d  parent: %ld      ovr: %d",
 645                            xevent->xreparent.window,
 646                            xevent->xreparent.x,
 647                            xevent->xreparent.y,
 648                            xevent->xreparent.parent,
 649                            xevent->xreparent.override_redirect));
 650
 651       /* Not currently handled */
 652       return_val = FALSE;
 653       break;
 654
 655     case ConfigureNotify:
 656       GDK_NOTE (EVENTS,
 657                 g_message ("configure notify:\twindow: %ld  x,y: %d %d  w,h: %d %d  b-w: %d  above: %ld  ovr: %d%s",
 658                            xevent->xconfigure.window,
 659                            xevent->xconfigure.x,
 660                            xevent->xconfigure.y,
 661                            xevent->xconfigure.width,
 662                            xevent->xconfigure.height,
 663                            xevent->xconfigure.border_width,
 664                            xevent->xconfigure.above,
 665                            xevent->xconfigure.override_redirect,
 666                            !window
 667                            ? " (discarding)"
 668                            : window->window_type == GDK_WINDOW_CHILD
 669                            ? " (discarding child)"
 670                            : xevent->xconfigure.event != xevent->xconfigure.window
 671                            ? " (discarding substructure)"
 672                            : ""));
 673       if (window && GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT)
 674         {
 675           window->width = xevent->xconfigure.width;
 676           window->height = xevent->xconfigure.height;
 677
 678           _gdk_window_update_size (window);
 679           _gdk_x11_window_update_size (GDK_WINDOW_IMPL_X11 (window->impl));
 680           _gdk_x11_screen_size_changed (screen, xevent);
 681         }
 682
 683 #ifdef HAVE_XSYNC
 684       if (toplevel && display_x11->use_sync && !XSyncValueIsZero (toplevel->pending_counter_value))
 685         {
 686           toplevel->current_counter_value = toplevel->pending_counter_value;
 687           XSyncIntToValue (&toplevel->pending_counter_value, 0);
 688         }
 689 #endif
 690
 691     if (!window ||
 692           xevent->xconfigure.event != xevent->xconfigure.window ||
 693           GDK_WINDOW_TYPE (window) == GDK_WINDOW_CHILD ||
 694           GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT)
 695         return_val = FALSE;
 696       else
 697         {
 698           event->configure.type = GDK_CONFIGURE;
 699           event->configure.window = window;
 700           event->configure.width = xevent->xconfigure.width;
 701           event->configure.height = xevent->xconfigure.height;
 702
 703           if (!xevent->xconfigure.send_event &&
 704               !xevent->xconfigure.override_redirect &&
 705               !GDK_WINDOW_DESTROYED (window))
 706             {
 707               gint tx = 0;
 708               gint ty = 0;
 709               Window child_window = 0;
 710
 711               gdk_x11_display_error_trap_push (display);
 712               if (XTranslateCoordinates (GDK_WINDOW_XDISPLAY (window),
 713                                          GDK_WINDOW_XID (window),
 714                                          x11_screen->xroot_window,
 715                                          0, 0,
 716                                          &tx, &ty,
 717                                          &child_window))
 718                 {
 719                   event->configure.x = tx;
 720                   event->configure.y = ty;
 721                 }
 722               gdk_x11_display_error_trap_pop_ignored (display);
 723             }
 724           else
 725             {
 726               event->configure.x = xevent->xconfigure.x;
 727               event->configure.y = xevent->xconfigure.y;
 728             }
 729           window->x = event->configure.x;
 730           window->y = event->configure.y;
 731           window->width = xevent->xconfigure.width;
 732           window->height = xevent->xconfigure.height;
 733
 734           _gdk_window_update_size (window);
 735           _gdk_x11_window_update_size (GDK_WINDOW_IMPL_X11 (window->impl));
 736
 737           if (window->resize_count >= 1)
 738             {
 739               window->resize_count -= 1;
 740
 741               if (window->resize_count == 0)
 742                 _gdk_x11_moveresize_configure_done (display, window);
 743             }
 744         }
 745       break;
 746
 747     case PropertyNotify:
 748       GDK_NOTE (EVENTS,
 749                 g_message ("property notify:\twindow: %ld, atom(%ld): %s%s%s",
 750                            xevent->xproperty.window,
 751                            xevent->xproperty.atom,
 752                            "\"",
 753                            gdk_x11_get_xatom_name_for_display (display, xevent->xproperty.atom),
 754                            "\""));
 755
 756       if (window == NULL)
 757         {
 758           return_val = FALSE;
 759           break;
 760         }
 761
 762       /* We compare with the serial of the last time we mapped the
 763        * window to avoid refetching properties that we set ourselves
 764        */
 765       if (toplevel &&
 766           xevent->xproperty.serial >= toplevel->map_serial)
 767         {
 768           if (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE"))
 769             gdk_check_wm_state_changed (window);
 770
 771           if (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP"))
 772             gdk_check_wm_desktop_changed (window);
 773         }
 774
 775       if (window->event_mask & GDK_PROPERTY_CHANGE_MASK)
 776         {
 777           event->property.type = GDK_PROPERTY_NOTIFY;
 778           event->property.window = window;
 779           event->property.atom = gdk_x11_xatom_to_atom_for_display (display, xevent->xproperty.atom);
 780           event->property.time = xevent->xproperty.time;
 781           event->property.state = xevent->xproperty.state;
 782         }
 783       else
 784         return_val = FALSE;
 785
 786       break;
 787
 788     case SelectionClear:
 789       GDK_NOTE (EVENTS,
 790                 g_message ("selection clear:\twindow: %ld",
 791                            xevent->xproperty.window));
 792
 793       if (_gdk_x11_selection_filter_clear_event (&xevent->xselectionclear))
 794         {
 795           event->selection.type = GDK_SELECTION_CLEAR;
 796           event->selection.window = window;
 797           event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionclear.selection);
 798           event->selection.time = xevent->xselectionclear.time;
 799         }
 800       else
 801         return_val = FALSE;
 802
 803       break;
 804
 805     case SelectionRequest:
 806       GDK_NOTE (EVENTS,
 807                 g_message ("selection request:\twindow: %ld",
 808                            xevent->xproperty.window));
 809
 810       event->selection.type = GDK_SELECTION_REQUEST;
 811       event->selection.window = window;
 812       event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.selection);
 813       event->selection.target = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.target);
 814       event->selection.property = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.property);
 815       if (xevent->xselectionrequest.requestor != None)
 816         event->selection.requestor = gdk_x11_window_foreign_new_for_display (display,
 817                                                                              xevent->xselectionrequest.requestor);
 818       else
 819         event->selection.requestor = NULL;
 820       event->selection.time = xevent->xselectionrequest.time;
 821
 822       break;
 823
 824     case SelectionNotify:
 825       GDK_NOTE (EVENTS,
 826                 g_message ("selection notify:\twindow: %ld",
 827                            xevent->xproperty.window));
 828
 829       event->selection.type = GDK_SELECTION_NOTIFY;
 830       event->selection.window = window;
 831       event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.selection);
 832       event->selection.target = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.target);
 833       if (xevent->xselection.property == None)
 834         event->selection.property = GDK_NONE;
 835       else
 836         event->selection.property = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.property);
 837       event->selection.time = xevent->xselection.time;
 838
 839       break;
 840
 841     case ColormapNotify:
 842       GDK_NOTE (EVENTS,
 843                 g_message ("colormap notify:\twindow: %ld",
 844                            xevent->xcolormap.window));
 845
 846       /* Not currently handled */
 847       return_val = FALSE;
 848       break;
 849
 850     case ClientMessage:
 851       GDK_NOTE (EVENTS,
 852                 g_message ("client message:\twindow: %ld",
 853                            xevent->xclient.window));
 854
 855       /* Not currently handled */
 856       return_val = FALSE;
 857       break;
 858
 859     case MappingNotify:
 860       GDK_NOTE (EVENTS,
 861                 g_message ("mapping notify"));
 862
 863       /* Let XLib know that there is a new keyboard mapping.
 864        */
 865       XRefreshKeyboardMapping (&xevent->xmapping);
 866       _gdk_x11_keymap_keys_changed (display);
 867       return_val = FALSE;
 868       break;
 869
 870     default:
 871 #ifdef HAVE_XFIXES
 872       if (xevent->type - display_x11->xfixes_event_base == XFixesSelectionNotify)
 873         {
 874           XFixesSelectionNotifyEvent *selection_notify = (XFixesSelectionNotifyEvent *)xevent;
 875
 876           _gdk_x11_screen_process_owner_change (screen, xevent);
 877
 878           event->owner_change.type = GDK_OWNER_CHANGE;
 879           event->owner_change.window = window;
 880           if (selection_notify->owner != None)
 881             event->owner_change.owner = gdk_x11_window_foreign_new_for_display (display,
 882                                                                                 selection_notify->owner);
 883           else
 884             event->owner_change.owner = NULL;
 885           event->owner_change.reason = selection_notify->subtype;
 886           event->owner_change.selection =
 887             gdk_x11_xatom_to_atom_for_display (display,
 888                                                selection_notify->selection);
 889           event->owner_change.time = selection_notify->timestamp;
 890           event->owner_change.selection_time = selection_notify->selection_timestamp;
 891
 892           return_val = TRUE;
 893         }
 894       else
 895 #endif
 896 #ifdef HAVE_RANDR
 897       if (xevent->type - display_x11->xrandr_event_base == RRScreenChangeNotify ||
 898           xevent->type - display_x11->xrandr_event_base == RRNotify)
 899         {
 900           if (screen)
 901             _gdk_x11_screen_size_changed (screen, xevent);
 902         }
 903       else
 904 #endif
 905 #if defined(HAVE_XCOMPOSITE) && defined (HAVE_XDAMAGE) && defined (HAVE_XFIXES)
 906       if (display_x11->have_xdamage && window && window->composited &&
 907           xevent->type == display_x11->xdamage_event_base + XDamageNotify &&
 908           ((XDamageNotifyEvent *) xevent)->damage == window_impl->damage)
 909         {
 910           XDamageNotifyEvent *damage_event = (XDamageNotifyEvent *) xevent;
 911           XserverRegion repair;
 912           GdkRectangle rect;
 913
 914           rect.x = window->x + damage_event->area.x;
 915           rect.y = window->y + damage_event->area.y;
 916           rect.width = damage_event->area.width;
 917           rect.height = damage_event->area.height;
 918
 919           repair = XFixesCreateRegion (display_x11->xdisplay,
 920                                        &damage_event->area, 1);
 921           XDamageSubtract (display_x11->xdisplay,
 922                            window_impl->damage,
 923                            repair, None);
 924           XFixesDestroyRegion (display_x11->xdisplay, repair);
 925
 926           if (window->parent != NULL)
 927            _gdk_x11_window_process_expose (window->parent,
 928                                            damage_event->serial, &rect);
 929
 930           return_val = TRUE;
 931         }
 932       else
 933 #endif
 934 #ifdef HAVE_XKB
 935       if (xevent->type == display_x11->xkb_event_type)
 936         {
 937           XkbEvent *xkb_event = (XkbEvent *) xevent;
 938
 939           switch (xkb_event->any.xkb_type)
 940             {
 941             case XkbNewKeyboardNotify:
 942             case XkbMapNotify:
 943               _gdk_x11_keymap_keys_changed (display);
 944
 945               return_val = FALSE;
 946               break;
 947
 948             case XkbStateNotify:
 949               _gdk_x11_keymap_state_changed (display, xevent);
 950               break;
 951             }
 952         }
 953       else
 954 #endif
 955         return_val = FALSE;
 956     }
 957
 958  done:
 959   if (return_val)
 960     {
 961       if (event->any.window)
 962         g_object_ref (event->any.window);
 963     }
 964   else
 965     {
 966       /* Mark this event as having no resources to be freed */
 967       event->any.window = NULL;
 968       event->any.type = GDK_NOTHING;
 969     }
 970
 971   if (window)
 972     g_object_unref (window);
 973
 974   return return_val;
 975 }
 976
 977 GdkFilterReturn
 978 _gdk_wm_protocols_filter (GdkXEvent *xev,
 979                           GdkEvent  *event,
 980                           gpointer   data)
 981 {
 982   XEvent *xevent = (XEvent *)xev;
 983   GdkWindow *win = event->any.window;
 984   GdkDisplay *display;
 985   Atom atom;
 986
 987   if (!GDK_IS_X11_WINDOW (win))
 988     return GDK_FILTER_CONTINUE;
 989
 990   if (xevent->type != ClientMessage)
 991     return GDK_FILTER_CONTINUE;
 992
 993   display = GDK_WINDOW_DISPLAY (win);
 994
 995   if (xevent->xclient.message_type != gdk_x11_get_xatom_by_name_for_display (display, "WM_PROTOCOLS"))
 996     return GDK_FILTER_CONTINUE;
 997
 998   atom = (Atom) xevent->xclient.data.l[0];
 999
1000   if (atom == gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW"))
1001     {
1002   /* The delete window request specifies a window
1003    *  to delete. We don't actually destroy the
1004    *  window because "it is only a request". (The
1005    *  window might contain vital data that the
1006    *  program does not want destroyed). Instead
1007    *  the event is passed along to the program,
1008    *  which should then destroy the window.
1009    */
1010       GDK_NOTE (EVENTS,
1011                 g_message ("delete window:\t\twindow: %ld",
1012                            xevent->xclient.window));
1013
1014       event->any.type = GDK_DELETE;
1015
1016       gdk_x11_window_set_user_time (win, xevent->xclient.data.l[1]);
1017
1018       return GDK_FILTER_TRANSLATE;
1019     }
1020   else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "WM_TAKE_FOCUS"))
1021     {
1022       GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (event->any.window);
1023
1024       /* There is no way of knowing reliably whether we are viewable;
1025        * so trap errors asynchronously around the XSetInputFocus call
1026        */
1027       if (toplevel && win->accept_focus)
1028         {
1029           gdk_x11_display_error_trap_push (display);
1030           XSetInputFocus (GDK_DISPLAY_XDISPLAY (display),
1031                           toplevel->focus_window,
1032                           RevertToParent,
1033                           xevent->xclient.data.l[1]);
1034           gdk_x11_display_error_trap_pop_ignored (display);
1035        }
1036
1037       return GDK_FILTER_REMOVE;
1038     }
1039   else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PING") &&
1040            !_gdk_x11_display_is_root_window (display,
1041                                              xevent->xclient.window))
1042     {
1043       XClientMessageEvent xclient = xevent->xclient;
1044
1045       xclient.window = GDK_WINDOW_XROOTWIN (win);
1046       XSendEvent (GDK_WINDOW_XDISPLAY (win),
1047                   xclient.window,
1048                   False,
1049                   SubstructureRedirectMask | SubstructureNotifyMask, (XEvent *)&xclient);
1050
1051       return GDK_FILTER_REMOVE;
1052     }
1053   else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_SYNC_REQUEST") &&
1054            GDK_X11_DISPLAY (display)->use_sync)
1055     {
1056       GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (event->any.window);
1057       if (toplevel)
1058         {
1059 #ifdef HAVE_XSYNC
1060           XSyncIntsToValue (&toplevel->pending_counter_value,
1061                             xevent->xclient.data.l[2],
1062                             xevent->xclient.data.l[3]);
1063 #endif
1064         }
1065       return GDK_FILTER_REMOVE;
1066     }
1067
1068   return GDK_FILTER_CONTINUE;
1069 }
1070
1071 static void
1072 gdk_event_init (GdkDisplay *display)
1073 {
1074   GdkX11Display *display_x11;
1075   GdkDeviceManager *device_manager;
1076
1077   display_x11 = GDK_X11_DISPLAY (display);
1078   display_x11->event_source = gdk_x11_event_source_new (display);
1079
1080   gdk_x11_event_source_add_translator ((GdkEventSource *) display_x11->event_source,
1081                                        GDK_EVENT_TRANSLATOR (display));
1082
1083   device_manager = gdk_display_get_device_manager (display);
1084   gdk_x11_event_source_add_translator ((GdkEventSource *) display_x11->event_source,
1085                                         GDK_EVENT_TRANSLATOR (device_manager));
1086 }
1087
1088 static void
1089 gdk_x11_display_init_input (GdkDisplay *display)
1090 {
1091   GdkX11Display *display_x11;
1092   GdkDeviceManager *device_manager;
1093   GdkDevice *device;
1094   GList *list, *l;
1095
1096   display_x11 = GDK_X11_DISPLAY (display);
1097   device_manager = gdk_display_get_device_manager (display);
1098
1099   /* For backwards compatibility, just add
1100    * floating devices that are not keyboards.
1101    */
1102   list = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING);
1103
1104   for (l = list; l; l = l->next)
1105     {
1106       device = l->data;
1107
1108       if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
1109         continue;
1110
1111       display_x11->input_devices = g_list_prepend (display_x11->input_devices,
1112                                                    g_object_ref (l->data));
1113     }
1114
1115   g_list_free (list);
1116
1117   /* Now set "core" pointer to the first
1118    * master device that is a pointer.
1119    */
1120   list = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
1121
1122   for (l = list; l; l = l->next)
1123     {
1124       device = l->data;
1125
1126       if (gdk_device_get_source (device) != GDK_SOURCE_MOUSE)
1127         continue;
1128
1129       display->core_pointer = device;
1130       break;
1131     }
1132
1133   /* Add the core pointer to the devices list */
1134   display_x11->input_devices = g_list_prepend (display_x11->input_devices,
1135                                                g_object_ref (display->core_pointer));
1136
1137   g_list_free (list);
1138 }
1139
1140 static void
1141 set_sm_client_id (GdkDisplay  *display,
1142                   const gchar *sm_client_id)
1143 {
1144   GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
1145
1146   if (gdk_display_is_closed (display))
1147     return;
1148
1149   if (sm_client_id && strcmp (sm_client_id, ""))
1150     XChangeProperty (display_x11->xdisplay, display_x11->leader_window,
1151                      gdk_x11_get_xatom_by_name_for_display (display, "SM_CLIENT_ID"),
1152                      XA_STRING, 8, PropModeReplace, (guchar *)sm_client_id,
1153                      strlen (sm_client_id));
1154   else
1155     XDeleteProperty (display_x11->xdisplay, display_x11->leader_window,
1156                      gdk_x11_get_xatom_by_name_for_display (display, "SM_CLIENT_ID"));
1157 }
1158
1159 GdkDisplay *
1160 _gdk_x11_display_open (const gchar *display_name)
1161 {
1162   Display *xdisplay;
1163   GdkDisplay *display;
1164   GdkX11Display *display_x11;
1165   GdkWindowAttr attr;
1166   gint argc;
1167   gchar *argv[1];
1168
1169   XClassHint *class_hint;
1170   gulong pid;
1171   gint i;
1172   gint ignore;
1173   gint maj, min;
1174
1175   xdisplay = XOpenDisplay (display_name);
1176   if (!xdisplay)
1177     return NULL;
1178
1179   display = g_object_new (GDK_TYPE_X11_DISPLAY, NULL);
1180   display_x11 = GDK_X11_DISPLAY (display);
1181
1182   display_x11->xdisplay = xdisplay;
1183
1184 #ifdef HAVE_X11R6
1185   /* Set up handlers for Xlib internal connections */
1186   XAddConnectionWatch (xdisplay, gdk_internal_connection_watch, NULL);
1187 #endif /* HAVE_X11R6 */
1188
1189   _gdk_x11_precache_atoms (display, precache_atoms, G_N_ELEMENTS (precache_atoms));
1190
1191   /* RandR must be initialized before we initialize the screens */
1192   display_x11->have_randr12 = FALSE;
1193   display_x11->have_randr13 = FALSE;
1194 #ifdef HAVE_RANDR
1195   if (XRRQueryExtension (display_x11->xdisplay,
1196                          &display_x11->xrandr_event_base, &ignore))
1197   {
1198       int major, minor;
1199
1200       XRRQueryVersion (display_x11->xdisplay, &major, &minor);
1201
1202       if ((major == 1 && minor >= 2) || major > 1) {
1203           display_x11->have_randr12 = TRUE;
1204           if (minor >= 3 || major > 1)
1205               display_x11->have_randr13 = TRUE;
1206       }
1207
1208        gdk_x11_register_standard_event_type (display, display_x11->xrandr_event_base, RRNumberEvents);
1209   }
1210 #endif
1211
1212   /* initialize the display's screens */
1213   display_x11->screens = g_new (GdkScreen *, ScreenCount (display_x11->xdisplay));
1214   for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
1215     display_x11->screens[i] = _gdk_x11_screen_new (display, i);
1216
1217   /* We need to initialize events after we have the screen
1218    * structures in places
1219    */
1220   for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
1221     _gdk_x11_screen_init_events (display_x11->screens[i]);
1222
1223   /*set the default screen */
1224   display_x11->default_screen = display_x11->screens[DefaultScreen (display_x11->xdisplay)];
1225
1226   display->device_manager = _gdk_x11_device_manager_new (display);
1227
1228   gdk_event_init (display);
1229
1230   attr.window_type = GDK_WINDOW_TOPLEVEL;
1231   attr.wclass = GDK_INPUT_OUTPUT;
1232   attr.x = 10;
1233   attr.y = 10;
1234   attr.width = 10;
1235   attr.height = 10;
1236   attr.event_mask = 0;
1237
1238   display_x11->leader_gdk_window = gdk_window_new (GDK_X11_SCREEN (display_x11->default_screen)->root_window,
1239                                                    &attr, GDK_WA_X | GDK_WA_Y);
1240   (_gdk_x11_window_get_toplevel (display_x11->leader_gdk_window))->is_leader = TRUE;
1241
1242   display_x11->leader_window = GDK_WINDOW_XID (display_x11->leader_gdk_window);
1243
1244   display_x11->leader_window_title_set = FALSE;
1245
1246 #ifdef HAVE_XFIXES
1247   if (XFixesQueryExtension (display_x11->xdisplay,
1248                             &display_x11->xfixes_event_base,
1249                             &ignore))
1250     {
1251       display_x11->have_xfixes = TRUE;
1252
1253       gdk_x11_register_standard_event_type (display,
1254                                             display_x11->xfixes_event_base,
1255                                             XFixesNumberEvents);
1256     }
1257   else
1258 #endif
1259     display_x11->have_xfixes = FALSE;
1260
1261 #ifdef HAVE_XCOMPOSITE
1262   if (XCompositeQueryExtension (display_x11->xdisplay,
1263                                 &ignore, &ignore))
1264     {
1265       int major, minor;
1266
1267       XCompositeQueryVersion (display_x11->xdisplay, &major, &minor);
1268
1269       /* Prior to Composite version 0.4, composited windows clipped their
1270        * parents, so you had to use IncludeInferiors to draw to the parent
1271        * This isn't useful for our purposes, so require 0.4
1272        */
1273       display_x11->have_xcomposite = major > 0 || (major == 0 && minor >= 4);
1274     }
1275   else
1276 #endif
1277     display_x11->have_xcomposite = FALSE;
1278
1279 #ifdef HAVE_XDAMAGE
1280   if (XDamageQueryExtension (display_x11->xdisplay,
1281                              &display_x11->xdamage_event_base,
1282                              &ignore))
1283     {
1284       display_x11->have_xdamage = TRUE;
1285
1286       gdk_x11_register_standard_event_type (display,
1287                                             display_x11->xdamage_event_base,
1288                                             XDamageNumberEvents);
1289     }
1290   else
1291 #endif
1292     display_x11->have_xdamage = FALSE;
1293
1294   display_x11->have_shapes = FALSE;
1295   display_x11->have_input_shapes = FALSE;
1296
1297   if (XShapeQueryExtension (GDK_DISPLAY_XDISPLAY (display), &display_x11->shape_event_base, &ignore))
1298     {
1299       display_x11->have_shapes = TRUE;
1300 #ifdef ShapeInput
1301       if (XShapeQueryVersion (GDK_DISPLAY_XDISPLAY (display), &maj, &min))
1302         display_x11->have_input_shapes = (maj == 1 && min >= 1);
1303 #endif
1304     }
1305
1306   display_x11->trusted_client = TRUE;
1307   {
1308     Window root, child;
1309     int rootx, rooty, winx, winy;
1310     unsigned int xmask;
1311
1312     gdk_x11_display_error_trap_push (display);
1313     XQueryPointer (display_x11->xdisplay,
1314                    GDK_X11_SCREEN (display_x11->default_screen)->xroot_window,
1315                    &root, &child, &rootx, &rooty, &winx, &winy, &xmask);
1316     if (G_UNLIKELY (gdk_x11_display_error_trap_pop (display) == BadWindow))
1317       {
1318         g_warning ("Connection to display %s appears to be untrusted. Pointer and keyboard grabs and inter-client communication may not work as expected.", gdk_display_get_name (display));
1319         display_x11->trusted_client = FALSE;
1320       }
1321   }
1322
1323   if (g_getenv ("GDK_SYNCHRONIZE"))
1324     XSynchronize (display_x11->xdisplay, True);
1325
1326   class_hint = XAllocClassHint();
1327   class_hint->res_name = g_get_prgname ();
1328
1329   class_hint->res_class = (char *)gdk_get_program_class ();
1330
1331   /* XmbSetWMProperties sets the RESOURCE_NAME environment variable
1332    * from argv[0], so we just synthesize an argument array here.
1333    */
1334   argc = 1;
1335   argv[0] = g_get_prgname ();
1336
1337   XmbSetWMProperties (display_x11->xdisplay,
1338                       display_x11->leader_window,
1339                       NULL, NULL, argv, argc, NULL, NULL,
1340                       class_hint);
1341   XFree (class_hint);
1342
1343   if (gdk_sm_client_id)
1344     set_sm_client_id (display, gdk_sm_client_id);
1345
1346   pid = getpid ();
1347   XChangeProperty (display_x11->xdisplay,
1348                    display_x11->leader_window,
1349                    gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PID"),
1350                    XA_CARDINAL, 32, PropModeReplace, (guchar *) & pid, 1);
1351
1352   /* We don't yet know a valid time. */
1353   display_x11->user_time = 0;
1354
1355 #ifdef HAVE_XKB
1356   {
1357     gint xkb_major = XkbMajorVersion;
1358     gint xkb_minor = XkbMinorVersion;
1359     if (XkbLibraryVersion (&xkb_major, &xkb_minor))
1360       {
1361         xkb_major = XkbMajorVersion;
1362         xkb_minor = XkbMinorVersion;
1363
1364         if (XkbQueryExtension (display_x11->xdisplay,
1365                                NULL, &display_x11->xkb_event_type, NULL,
1366                                &xkb_major, &xkb_minor))
1367           {
1368             Bool detectable_autorepeat_supported;
1369
1370             display_x11->use_xkb = TRUE;
1371
1372             XkbSelectEvents (display_x11->xdisplay,
1373                              XkbUseCoreKbd,
1374                              XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask,
1375                              XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask);
1376
1377             /* keep this in sync with _gdk_x11_keymap_state_changed() */
1378             XkbSelectEventDetails (display_x11->xdisplay,
1379                                    XkbUseCoreKbd, XkbStateNotify,
1380                                    XkbAllStateComponentsMask,
1381                                    XkbGroupLockMask|XkbModifierLockMask);
1382
1383             XkbSetDetectableAutoRepeat (display_x11->xdisplay,
1384                                         True,
1385                                         &detectable_autorepeat_supported);
1386
1387             GDK_NOTE (MISC, g_message ("Detectable autorepeat %s.",
1388                                        detectable_autorepeat_supported ?
1389                                        "supported" : "not supported"));
1390
1391             display_x11->have_xkb_autorepeat = detectable_autorepeat_supported;
1392           }
1393       }
1394   }
1395 #endif
1396
1397   display_x11->use_sync = FALSE;
1398 #ifdef HAVE_XSYNC
1399   {
1400     int major, minor;
1401     int error_base, event_base;
1402
1403     if (XSyncQueryExtension (display_x11->xdisplay,
1404                              &event_base, &error_base) &&
1405         XSyncInitialize (display_x11->xdisplay,
1406                          &major, &minor))
1407       display_x11->use_sync = TRUE;
1408   }
1409 #endif
1410
1411   gdk_x11_display_init_input (display);
1412
1413   for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
1414     _gdk_x11_screen_setup (display_x11->screens[i]);
1415
1416   g_signal_emit_by_name (display, "opened");
1417   g_signal_emit_by_name (gdk_display_manager_get (), "display-opened", display);
1418
1419   return display;
1420 }
1421
1422 #ifdef HAVE_X11R6
1423 /*
1424  * XLib internal connection handling
1425  */
1426 typedef struct _GdkInternalConnection GdkInternalConnection;
1427
1428 struct _GdkInternalConnection
1429 {
1430   gint           fd;
1431   GSource       *source;
1432   Display       *display;
1433 };
1434
1435 static gboolean
1436 process_internal_connection (GIOChannel  *gioc,
1437                              GIOCondition cond,
1438                              gpointer     data)
1439 {
1440   GdkInternalConnection *connection = (GdkInternalConnection *)data;
1441
1442   GDK_THREADS_ENTER ();
1443
1444   XProcessInternalConnection ((Display*)connection->display, connection->fd);
1445
1446   GDK_THREADS_LEAVE ();
1447
1448   return TRUE;
1449 }
1450
1451 static gulong
1452 gdk_x11_display_get_next_serial (GdkDisplay *display)
1453 {
1454   return NextRequest (GDK_DISPLAY_XDISPLAY (display));
1455 }
1456
1457
1458 static GdkInternalConnection *
1459 gdk_add_connection_handler (Display *display,
1460                             guint    fd)
1461 {
1462   GIOChannel *io_channel;
1463   GdkInternalConnection *connection;
1464
1465   connection = g_new (GdkInternalConnection, 1);
1466
1467   connection->fd = fd;
1468   connection->display = display;
1469
1470   io_channel = g_io_channel_unix_new (fd);
1471
1472   connection->source = g_io_create_watch (io_channel, G_IO_IN);
1473   g_source_set_callback (connection->source,
1474                          (GSourceFunc)process_internal_connection, connection, NULL);
1475   g_source_attach (connection->source, NULL);
1476
1477   g_io_channel_unref (io_channel);
1478
1479   return connection;
1480 }
1481
1482 static void
1483 gdk_remove_connection_handler (GdkInternalConnection *connection)
1484 {
1485   g_source_destroy (connection->source);
1486   g_free (connection);
1487 }
1488
1489 static void
1490 gdk_internal_connection_watch (Display  *display,
1491                                XPointer  arg,
1492                                gint      fd,
1493                                gboolean  opening,
1494                                XPointer *watch_data)
1495 {
1496   if (opening)
1497     *watch_data = (XPointer)gdk_add_connection_handler (display, fd);
1498   else
1499     gdk_remove_connection_handler ((GdkInternalConnection *)*watch_data);
1500 }
1501 #endif /* HAVE_X11R6 */
1502
1503 static const gchar *
1504 gdk_x11_display_get_name (GdkDisplay *display)
1505 {
1506   return (gchar *) DisplayString (GDK_X11_DISPLAY (display)->xdisplay);
1507 }
1508
1509 static gint
1510 gdk_x11_display_get_n_screens (GdkDisplay *display)
1511 {
1512   return ScreenCount (GDK_X11_DISPLAY (display)->xdisplay);
1513 }
1514
1515 static GdkScreen *
1516 gdk_x11_display_get_screen (GdkDisplay *display,
1517                             gint        screen_num)
1518 {
1519   g_return_val_if_fail (ScreenCount (GDK_X11_DISPLAY (display)->xdisplay) > screen_num, NULL);
1520
1521   return GDK_X11_DISPLAY (display)->screens[screen_num];
1522 }
1523
1524 static GdkScreen *
1525 gdk_x11_display_get_default_screen (GdkDisplay *display)
1526 {
1527   return GDK_X11_DISPLAY (display)->default_screen;
1528 }
1529
1530 gboolean
1531 _gdk_x11_display_is_root_window (GdkDisplay *display,
1532                                  Window      xroot_window)
1533 {
1534   GdkX11Display *display_x11;
1535   gint i;
1536
1537   display_x11 = GDK_X11_DISPLAY (display);
1538
1539   for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
1540     {
1541       if (GDK_SCREEN_XROOTWIN (display_x11->screens[i]) == xroot_window)
1542         return TRUE;
1543     }
1544   return FALSE;
1545 }
1546
1547 struct XPointerUngrabInfo {
1548   GdkDisplay *display;
1549   guint32 time;
1550 };
1551
1552 static void
1553 device_grab_update_callback (GdkDisplay *display,
1554                              gpointer    data,
1555                              gulong      serial)
1556 {
1557   GdkDevice *device = data;
1558
1559   _gdk_display_device_grab_update (display, device, NULL, serial);
1560 }
1561
1562 #define XSERVER_TIME_IS_LATER(time1, time2)                        \
1563   ( (( time1 > time2 ) && ( time1 - time2 < ((guint32)-1)/2 )) ||  \
1564     (( time1 < time2 ) && ( time2 - time1 > ((guint32)-1)/2 ))     \
1565   )
1566
1567 void
1568 _gdk_x11_display_update_grab_info (GdkDisplay *display,
1569                                    GdkDevice  *device,
1570                                    gint        status)
1571 {
1572   if (status == GrabSuccess)
1573     _gdk_x11_roundtrip_async (display, device_grab_update_callback, device);
1574 }
1575
1576 void
1577 _gdk_x11_display_update_grab_info_ungrab (GdkDisplay *display,
1578                                           GdkDevice  *device,
1579                                           guint32     time,
1580                                           gulong      serial)
1581 {
1582   GdkDeviceGrabInfo *grab;
1583
1584   XFlush (GDK_DISPLAY_XDISPLAY (display));
1585
1586   grab = _gdk_display_get_last_device_grab (display, device);
1587   if (grab &&
1588       (time == GDK_CURRENT_TIME ||
1589        grab->time == GDK_CURRENT_TIME ||
1590        !XSERVER_TIME_IS_LATER (grab->time, time)))
1591     {
1592       grab->serial_end = serial;
1593       _gdk_x11_roundtrip_async (display, device_grab_update_callback, device);
1594     }
1595 }
1596
1597 static void
1598 gdk_x11_display_beep (GdkDisplay *display)
1599 {
1600 #ifdef HAVE_XKB
1601   XkbBell (GDK_DISPLAY_XDISPLAY (display), None, 0, None);
1602 #else
1603   XBell (GDK_DISPLAY_XDISPLAY (display), 0);
1604 #endif
1605 }
1606
1607 static void
1608 gdk_x11_display_sync (GdkDisplay *display)
1609 {
1610   XSync (GDK_DISPLAY_XDISPLAY (display), False);
1611 }
1612
1613 static void
1614 gdk_x11_display_flush (GdkDisplay *display)
1615 {
1616   if (!display->closed)
1617     XFlush (GDK_DISPLAY_XDISPLAY (display));
1618 }
1619
1620 static gboolean
1621 gdk_x11_display_has_pending (GdkDisplay *display)
1622 {
1623   return XPending (GDK_DISPLAY_XDISPLAY (display));
1624 }
1625
1626 static GdkWindow *
1627 gdk_x11_display_get_default_group (GdkDisplay *display)
1628 {
1629   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
1630
1631   return GDK_X11_DISPLAY (display)->leader_gdk_window;
1632 }
1633
1634 /**
1635  * gdk_x11_display_grab:
1636  * @display: (type GdkX11Display): a #GdkDisplay
1637  *
1638  * Call XGrabServer() on @display.
1639  * To ungrab the display again, use gdk_x11_display_ungrab().
1640  *
1641  * gdk_x11_display_grab()/gdk_x11_display_ungrab() calls can be nested.
1642  *
1643  * Since: 2.2
1644  **/
1645 void
1646 gdk_x11_display_grab (GdkDisplay *display)
1647 {
1648   GdkX11Display *display_x11;
1649
1650   g_return_if_fail (GDK_IS_DISPLAY (display));
1651
1652   display_x11 = GDK_X11_DISPLAY (display);
1653
1654   if (display_x11->grab_count == 0)
1655     XGrabServer (display_x11->xdisplay);
1656   display_x11->grab_count++;
1657 }
1658
1659 /**
1660  * gdk_x11_display_ungrab:
1661  * @display: (type GdkX11Display): a #GdkDisplay
1662  *
1663  * Ungrab @display after it has been grabbed with
1664  * gdk_x11_display_grab().
1665  *
1666  * Since: 2.2
1667  **/
1668 void
1669 gdk_x11_display_ungrab (GdkDisplay *display)
1670 {
1671   GdkX11Display *display_x11;
1672
1673   g_return_if_fail (GDK_IS_DISPLAY (display));
1674
1675   display_x11 = GDK_X11_DISPLAY (display);;
1676   g_return_if_fail (display_x11->grab_count > 0);
1677
1678   display_x11->grab_count--;
1679   if (display_x11->grab_count == 0)
1680     {
1681       XUngrabServer (display_x11->xdisplay);
1682       XFlush (display_x11->xdisplay);
1683     }
1684 }
1685
1686 static void
1687 gdk_x11_display_dispose (GObject *object)
1688 {
1689   GdkDisplay *display = GDK_DISPLAY (object);
1690   GdkX11Display *display_x11 = GDK_X11_DISPLAY (object);
1691   gint           i;
1692
1693   _gdk_x11_display_manager_remove_display (gdk_display_manager_get (), display);
1694
1695   g_list_foreach (display_x11->input_devices, (GFunc) g_object_run_dispose, NULL);
1696
1697   for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
1698     _gdk_screen_close (display_x11->screens[i]);
1699
1700   if (display_x11->event_source)
1701     {
1702       g_source_destroy (display_x11->event_source);
1703       g_source_unref (display_x11->event_source);
1704       display_x11->event_source = NULL;
1705     }
1706
1707   G_OBJECT_CLASS (gdk_x11_display_parent_class)->dispose (object);
1708 }
1709
1710 static void
1711 gdk_x11_display_finalize (GObject *object)
1712 {
1713   GdkX11Display *display_x11 = GDK_X11_DISPLAY (object);
1714   gint           i;
1715
1716   /* Keymap */
1717   if (display_x11->keymap)
1718     g_object_unref (display_x11->keymap);
1719
1720   /* Free motif Dnd */
1721   if (display_x11->motif_target_lists)
1722     {
1723       for (i = 0; i < display_x11->motif_n_target_lists; i++)
1724         g_list_free (display_x11->motif_target_lists[i]);
1725       g_free (display_x11->motif_target_lists);
1726     }
1727
1728   _gdk_x11_cursor_display_finalize (GDK_DISPLAY (display_x11));
1729
1730   /* Empty the event queue */
1731   _gdk_x11_display_free_translate_queue (GDK_DISPLAY (display_x11));
1732
1733   /* Atom Hashtable */
1734   g_hash_table_destroy (display_x11->atom_from_virtual);
1735   g_hash_table_destroy (display_x11->atom_to_virtual);
1736
1737   /* Leader Window */
1738   XDestroyWindow (display_x11->xdisplay, display_x11->leader_window);
1739
1740   /* List of event window extraction functions */
1741   g_slist_foreach (display_x11->event_types, (GFunc)g_free, NULL);
1742   g_slist_free (display_x11->event_types);
1743
1744   /* input GdkDevice list */
1745   g_list_foreach (display_x11->input_devices, (GFunc) g_object_unref, NULL);
1746   g_list_free (display_x11->input_devices);
1747
1748   /* input GdkWindow list */
1749   g_list_foreach (display_x11->input_windows, (GFunc) g_free, NULL);
1750   g_list_free (display_x11->input_windows);
1751
1752   /* Free all GdkScreens */
1753   for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
1754     g_object_unref (display_x11->screens[i]);
1755   g_free (display_x11->screens);
1756
1757   g_free (display_x11->startup_notification_id);
1758
1759   /* X ID hashtable */
1760   g_hash_table_destroy (display_x11->xid_ht);
1761
1762   XCloseDisplay (display_x11->xdisplay);
1763
1764   /* error traps */
1765   while (display_x11->error_traps != NULL)
1766     {
1767       GdkErrorTrap *trap = display_x11->error_traps->data;
1768
1769       display_x11->error_traps =
1770         g_slist_delete_link (display_x11->error_traps,
1771                              display_x11->error_traps);
1772
1773       if (trap->end_sequence == 0)
1774         g_warning ("Display finalized with an unpopped error trap");
1775
1776       g_slice_free (GdkErrorTrap, trap);
1777     }
1778
1779   G_OBJECT_CLASS (gdk_x11_display_parent_class)->finalize (object);
1780 }
1781
1782 /**
1783  * gdk_x11_lookup_xdisplay:
1784  * @xdisplay: a pointer to an X Display
1785  *
1786  * Find the #GdkDisplay corresponding to @display, if any exists.
1787  *
1788  * Return value: (transfer none): the #GdkDisplay, if found, otherwise %NULL.
1789  *
1790  * Since: 2.2
1791  **/
1792 GdkDisplay *
1793 gdk_x11_lookup_xdisplay (Display *xdisplay)
1794 {
1795   GSList *list, *l;
1796   GdkDisplay *display;
1797
1798   display = NULL;
1799
1800   list = gdk_display_manager_list_displays (gdk_display_manager_get ());
1801
1802   for (l = list; l; l = l->next)
1803     {
1804       if (GDK_DISPLAY_XDISPLAY (l->data) == xdisplay)
1805         {
1806           display = l->data;
1807           break;
1808         }
1809     }
1810
1811   g_slist_free (list);
1812
1813   return display;
1814 }
1815
1816 /**
1817  * _gdk_x11_display_screen_for_xrootwin:
1818  * @display: a #GdkDisplay
1819  * @xrootwin: window ID for one of of the screen's of the display.
1820  *
1821  * Given the root window ID of one of the screen's of a #GdkDisplay,
1822  * finds the screen.
1823  *
1824  * Return value: (transfer none): the #GdkScreen corresponding to
1825  *     @xrootwin, or %NULL.
1826  **/
1827 GdkScreen *
1828 _gdk_x11_display_screen_for_xrootwin (GdkDisplay *display,
1829                                       Window      xrootwin)
1830 {
1831   gint i;
1832
1833   for (i = 0; i < ScreenCount (GDK_X11_DISPLAY (display)->xdisplay); i++)
1834     {
1835       GdkScreen *screen = gdk_display_get_screen (display, i);
1836       if (GDK_SCREEN_XROOTWIN (screen) == xrootwin)
1837         return screen;
1838     }
1839
1840   return NULL;
1841 }
1842
1843 /**
1844  * gdk_x11_display_get_xdisplay:
1845  * @display: (type GdkX11Display): a #GdkDisplay
1846  * @returns: (transfer none): an X display.
1847  *
1848  * Returns the X display of a #GdkDisplay.
1849  *
1850  * Since: 2.2
1851  */
1852 Display *
1853 gdk_x11_display_get_xdisplay (GdkDisplay *display)
1854 {
1855   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
1856   return GDK_X11_DISPLAY (display)->xdisplay;
1857 }
1858
1859 void
1860 _gdk_x11_display_make_default (GdkDisplay *display)
1861 {
1862   GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
1863   const gchar *startup_id;
1864
1865   g_free (display_x11->startup_notification_id);
1866   display_x11->startup_notification_id = NULL;
1867
1868   startup_id = g_getenv ("DESKTOP_STARTUP_ID");
1869   if (startup_id && *startup_id != '\0')
1870     {
1871       if (!g_utf8_validate (startup_id, -1, NULL))
1872         g_warning ("DESKTOP_STARTUP_ID contains invalid UTF-8");
1873       else
1874         gdk_x11_display_set_startup_notification_id (display, startup_id);
1875
1876       /* Clear the environment variable so it won't be inherited by
1877        * child processes and confuse things.
1878        */
1879       g_unsetenv ("DESKTOP_STARTUP_ID");
1880     }
1881 }
1882
1883 static void
1884 broadcast_xmessage (GdkDisplay *display,
1885                     const char *message_type,
1886                     const char *message_type_begin,
1887                     const char *message)
1888 {
1889   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
1890   GdkScreen *screen = gdk_display_get_default_screen (display);
1891   GdkWindow *root_window = gdk_screen_get_root_window (screen);
1892   Window xroot_window = GDK_WINDOW_XID (root_window);
1893
1894   Atom type_atom;
1895   Atom type_atom_begin;
1896   Window xwindow;
1897
1898   if (!G_LIKELY (GDK_X11_DISPLAY (display)->trusted_client))
1899     return;
1900
1901   {
1902     XSetWindowAttributes attrs;
1903
1904     attrs.override_redirect = True;
1905     attrs.event_mask = PropertyChangeMask | StructureNotifyMask;
1906
1907     xwindow =
1908       XCreateWindow (xdisplay,
1909                      xroot_window,
1910                      -100, -100, 1, 1,
1911                      0,
1912                      CopyFromParent,
1913                      CopyFromParent,
1914                      (Visual *)CopyFromParent,
1915                      CWOverrideRedirect | CWEventMask,
1916                      &attrs);
1917   }
1918
1919   type_atom = gdk_x11_get_xatom_by_name_for_display (display,
1920                                                      message_type);
1921   type_atom_begin = gdk_x11_get_xatom_by_name_for_display (display,
1922                                                            message_type_begin);
1923
1924   {
1925     XClientMessageEvent xclient;
1926     const char *src;
1927     const char *src_end;
1928     char *dest;
1929     char *dest_end;
1930
1931                 memset(&xclient, 0, sizeof (xclient));
1932     xclient.type = ClientMessage;
1933     xclient.message_type = type_atom_begin;
1934     xclient.display =xdisplay;
1935     xclient.window = xwindow;
1936     xclient.format = 8;
1937
1938     src = message;
1939     src_end = message + strlen (message) + 1; /* +1 to include nul byte */
1940
1941     while (src != src_end)
1942       {
1943         dest = &xclient.data.b[0];
1944         dest_end = dest + 20;
1945
1946         while (dest != dest_end &&
1947                src != src_end)
1948           {
1949             *dest = *src;
1950             ++dest;
1951             ++src;
1952           }
1953
1954         while (dest != dest_end)
1955           {
1956             *dest = 0;
1957             ++dest;
1958           }
1959
1960         XSendEvent (xdisplay,
1961                     xroot_window,
1962                     False,
1963                     PropertyChangeMask,
1964                     (XEvent *)&xclient);
1965
1966         xclient.message_type = type_atom;
1967       }
1968   }
1969
1970   XDestroyWindow (xdisplay, xwindow);
1971   XFlush (xdisplay);
1972 }
1973
1974 /**
1975  * gdk_x11_display_broadcast_startup_message:
1976  * @display: (type GdkX11Display): a #GdkDisplay
1977  * @message_type: startup notification message type ("new", "change",
1978  * or "remove")
1979  * @...: a list of key/value pairs (as strings), terminated by a
1980  * %NULL key. (A %NULL value for a key will cause that key to be
1981  * skipped in the output.)
1982  *
1983  * Sends a startup notification message of type @message_type to
1984  * @display.
1985  *
1986  * This is a convenience function for use by code that implements the
1987  * freedesktop startup notification specification. Applications should
1988  * not normally need to call it directly. See the <ulink
1989  * url="http://standards.freedesktop.org/startup-notification-spec/startup-notification-latest.txt">Startup
1990  * Notification Protocol specification</ulink> for
1991  * definitions of the message types and keys that can be used.
1992  *
1993  * Since: 2.12
1994  **/
1995 void
1996 gdk_x11_display_broadcast_startup_message (GdkDisplay *display,
1997                                            const char *message_type,
1998                                            ...)
1999 {
2000   GString *message;
2001   va_list ap;
2002   const char *key, *value, *p;
2003
2004   message = g_string_new (message_type);
2005   g_string_append_c (message, ':');
2006
2007   va_start (ap, message_type);
2008   while ((key = va_arg (ap, const char *)))
2009     {
2010       value = va_arg (ap, const char *);
2011       if (!value)
2012         continue;
2013
2014       g_string_append_printf (message, " %s=\"", key);
2015       for (p = value; *p; p++)
2016         {
2017           switch (*p)
2018             {
2019             case ' ':
2020             case '"':
2021             case '\\':
2022               g_string_append_c (message, '\\');
2023               break;
2024             }
2025
2026           g_string_append_c (message, *p);
2027         }
2028       g_string_append_c (message, '\"');
2029     }
2030   va_end (ap);
2031
2032   broadcast_xmessage (display,
2033                       "_NET_STARTUP_INFO",
2034                       "_NET_STARTUP_INFO_BEGIN",
2035                       message->str);
2036
2037   g_string_free (message, TRUE);
2038 }
2039
2040 static void
2041 gdk_x11_display_notify_startup_complete (GdkDisplay  *display,
2042                                          const gchar *startup_id)
2043 {
2044   if (startup_id == NULL)
2045     {
2046       startup_id = GDK_X11_DISPLAY (display)->startup_notification_id;
2047       if (startup_id == NULL)
2048         return;
2049     }
2050
2051   gdk_x11_display_broadcast_startup_message (display, "remove",
2052                                              "ID", startup_id,
2053                                              NULL);
2054 }
2055
2056 static gboolean
2057 gdk_x11_display_supports_selection_notification (GdkDisplay *display)
2058 {
2059   GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
2060
2061   return display_x11->have_xfixes;
2062 }
2063
2064 static gboolean
2065 gdk_x11_display_request_selection_notification (GdkDisplay *display,
2066                                                 GdkAtom     selection)
2067
2068 {
2069 #ifdef HAVE_XFIXES
2070   GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
2071   Atom atom;
2072
2073   if (display_x11->have_xfixes)
2074     {
2075       atom = gdk_x11_atom_to_xatom_for_display (display,
2076                                                 selection);
2077       XFixesSelectSelectionInput (display_x11->xdisplay,
2078                                   display_x11->leader_window,
2079                                   atom,
2080                                   XFixesSetSelectionOwnerNotifyMask |
2081                                   XFixesSelectionWindowDestroyNotifyMask |
2082                                   XFixesSelectionClientCloseNotifyMask);
2083       return TRUE;
2084     }
2085   else
2086 #endif
2087     return FALSE;
2088 }
2089
2090 static gboolean
2091 gdk_x11_display_supports_clipboard_persistence (GdkDisplay *display)
2092 {
2093   Atom clipboard_manager;
2094
2095   /* It might make sense to cache this */
2096   clipboard_manager = gdk_x11_get_xatom_by_name_for_display (display, "CLIPBOARD_MANAGER");
2097   return XGetSelectionOwner (GDK_X11_DISPLAY (display)->xdisplay, clipboard_manager) != None;
2098 }
2099
2100 static void
2101 gdk_x11_display_store_clipboard (GdkDisplay    *display,
2102                                  GdkWindow     *clipboard_window,
2103                                  guint32        time_,
2104                                  const GdkAtom *targets,
2105                                  gint           n_targets)
2106 {
2107   GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
2108   Atom clipboard_manager, save_targets;
2109
2110   g_return_if_fail (GDK_WINDOW_IS_X11 (clipboard_window));
2111
2112   clipboard_manager = gdk_x11_get_xatom_by_name_for_display (display, "CLIPBOARD_MANAGER");
2113   save_targets = gdk_x11_get_xatom_by_name_for_display (display, "SAVE_TARGETS");
2114
2115   gdk_x11_display_error_trap_push (display);
2116
2117   if (XGetSelectionOwner (display_x11->xdisplay, clipboard_manager) != None)
2118     {
2119       Atom property_name = None;
2120       Atom *xatoms;
2121       int i;
2122
2123       if (n_targets > 0)
2124         {
2125           property_name = gdk_x11_get_xatom_by_name_for_display (display, "GDK_SELECTION");
2126
2127           xatoms = g_new (Atom, n_targets);
2128           for (i = 0; i < n_targets; i++)
2129             xatoms[i] = gdk_x11_atom_to_xatom_for_display (display, targets[i]);
2130
2131           XChangeProperty (display_x11->xdisplay, GDK_WINDOW_XID (clipboard_window),
2132                            property_name, XA_ATOM,
2133                            32, PropModeReplace, (guchar *)xatoms, n_targets);
2134           g_free (xatoms);
2135
2136         }
2137
2138       XConvertSelection (display_x11->xdisplay,
2139                          clipboard_manager, save_targets, property_name,
2140                          GDK_WINDOW_XID (clipboard_window), time_);
2141
2142     }
2143   gdk_x11_display_error_trap_pop_ignored (display);
2144
2145 }
2146
2147 /**
2148  * gdk_x11_display_get_user_time:
2149  * @display: (type GdkX11Display): a #GdkDisplay
2150  *
2151  * Returns the timestamp of the last user interaction on
2152  * @display. The timestamp is taken from events caused
2153  * by user interaction such as key presses or pointer
2154  * movements. See gdk_x11_window_set_user_time().
2155  *
2156  * Returns: the timestamp of the last user interaction
2157  *
2158  * Since: 2.8
2159  */
2160 guint32
2161 gdk_x11_display_get_user_time (GdkDisplay *display)
2162 {
2163   return GDK_X11_DISPLAY (display)->user_time;
2164 }
2165
2166 static gboolean
2167 gdk_x11_display_supports_shapes (GdkDisplay *display)
2168 {
2169   return GDK_X11_DISPLAY (display)->have_shapes;
2170 }
2171
2172 static gboolean
2173 gdk_x11_display_supports_input_shapes (GdkDisplay *display)
2174 {
2175   return GDK_X11_DISPLAY (display)->have_input_shapes;
2176 }
2177
2178
2179 /**
2180  * gdk_x11_display_get_startup_notification_id:
2181  * @display: (type GdkX11Display): a #GdkDisplay
2182  *
2183  * Gets the startup notification ID for a display.
2184  *
2185  * Returns: the startup notification ID for @display
2186  *
2187  * Since: 2.12
2188  */
2189 const gchar *
2190 gdk_x11_display_get_startup_notification_id (GdkDisplay *display)
2191 {
2192   return GDK_X11_DISPLAY (display)->startup_notification_id;
2193 }
2194
2195 /**
2196  * gdk_x11_display_set_startup_notification_id:
2197  * @display: (type GdkX11Display): a #GdkDisplay
2198  * @startup_id: the startup notification ID (must be valid utf8)
2199  *
2200  * Sets the startup notification ID for a display.
2201  *
2202  * This is usually taken from the value of the DESKTOP_STARTUP_ID
2203  * environment variable, but in some cases (such as the application not
2204  * being launched using exec()) it can come from other sources.
2205  *
2206  * If the ID contains the string "_TIME" then the portion following that
2207  * string is taken to be the X11 timestamp of the event that triggered
2208  * the application to be launched and the GDK current event time is set
2209  * accordingly.
2210  *
2211  * The startup ID is also what is used to signal that the startup is
2212  * complete (for example, when opening a window or when calling
2213  * gdk_notify_startup_complete()).
2214  *
2215  * Since: 3.0
2216  **/
2217 void
2218 gdk_x11_display_set_startup_notification_id (GdkDisplay  *display,
2219                                              const gchar *startup_id)
2220 {
2221   GdkX11Display *display_x11;
2222   gchar *time_str;
2223
2224   display_x11 = GDK_X11_DISPLAY (display);
2225
2226   g_free (display_x11->startup_notification_id);
2227   display_x11->startup_notification_id = g_strdup (startup_id);
2228
2229   /* Find the launch time from the startup_id, if it's there.  Newer spec
2230    * states that the startup_id is of the form <unique>_TIME<timestamp>
2231    */
2232   time_str = g_strrstr (startup_id, "_TIME");
2233   if (time_str != NULL)
2234     {
2235       gulong retval;
2236       gchar *end;
2237       errno = 0;
2238
2239       /* Skip past the "_TIME" part */
2240       time_str += 5;
2241
2242       retval = strtoul (time_str, &end, 0);
2243       if (end != time_str && errno == 0)
2244         display_x11->user_time = retval;
2245     }
2246
2247   /* Set the startup id on the leader window so it
2248    * applies to all windows we create on this display
2249    */
2250   XChangeProperty (display_x11->xdisplay,
2251                    display_x11->leader_window,
2252                    gdk_x11_get_xatom_by_name_for_display (display, "_NET_STARTUP_ID"),
2253                    gdk_x11_get_xatom_by_name_for_display (display, "UTF8_STRING"), 8,
2254                    PropModeReplace,
2255                    (guchar *)startup_id, strlen (startup_id));
2256 }
2257
2258 static gboolean
2259 gdk_x11_display_supports_composite (GdkDisplay *display)
2260 {
2261   GdkX11Display *x11_display = GDK_X11_DISPLAY (display);
2262
2263   return x11_display->have_xcomposite &&
2264          x11_display->have_xdamage &&
2265          x11_display->have_xfixes;
2266 }
2267
2268 static GList *
2269 gdk_x11_display_list_devices (GdkDisplay *display)
2270 {
2271   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
2272
2273   return GDK_X11_DISPLAY (display)->input_devices;
2274 }
2275
2276 /**
2277  * gdk_x11_register_standard_event_type:
2278  * @display: a #GdkDisplay
2279  * @event_base: first event type code to register
2280  * @n_events: number of event type codes to register
2281  *
2282  * Registers interest in receiving extension events with type codes
2283  * between @event_base and <literal>event_base + n_events - 1</literal>.
2284  * The registered events must have the window field in the same place
2285  * as core X events (this is not the case for e.g. XKB extension events).
2286  *
2287  * If an event type is registered, events of this type will go through
2288  * global and window-specific filters (see gdk_window_add_filter()).
2289  * Unregistered events will only go through global filters.
2290  * GDK may register the events of some X extensions on its own.
2291  *
2292  * This function should only be needed in unusual circumstances, e.g.
2293  * when filtering XInput extension events on the root window.
2294  *
2295  * Since: 2.4
2296  **/
2297 void
2298 gdk_x11_register_standard_event_type (GdkDisplay *display,
2299                                       gint        event_base,
2300                                       gint        n_events)
2301 {
2302   GdkEventTypeX11 *event_type;
2303   GdkX11Display *display_x11;
2304
2305   display_x11 = GDK_X11_DISPLAY (display);
2306   event_type = g_new (GdkEventTypeX11, 1);
2307
2308   event_type->base = event_base;
2309   event_type->n_events = n_events;
2310
2311   display_x11->event_types = g_slist_prepend (display_x11->event_types, event_type);
2312 }
2313
2314 /* compare X sequence numbers handling wraparound */
2315 #define SEQUENCE_COMPARE(a,op,b) (((long) (a) - (long) (b)) op 0)
2316
2317 /* delivers an error event from the error handler in gdkmain-x11.c */
2318 void
2319 _gdk_x11_display_error_event (GdkDisplay  *display,
2320                               XErrorEvent *error)
2321 {
2322   GdkX11Display *display_x11;
2323   GSList *tmp_list;
2324   gboolean ignore;
2325
2326   display_x11 = GDK_X11_DISPLAY (display);
2327
2328   ignore = FALSE;
2329   for (tmp_list = display_x11->error_traps;
2330        tmp_list != NULL;
2331        tmp_list = tmp_list->next)
2332     {
2333       GdkErrorTrap *trap;
2334
2335       trap = tmp_list->data;
2336
2337       if (SEQUENCE_COMPARE (trap->start_sequence, <=, error->serial) &&
2338           (trap->end_sequence == 0 ||
2339            SEQUENCE_COMPARE (trap->end_sequence, >, error->serial)))
2340         {
2341           ignore = TRUE;
2342           trap->error_code = error->error_code;
2343           break; /* only innermost trap gets the error code */
2344         }
2345     }
2346
2347   if (!ignore)
2348     {
2349       gchar buf[64];
2350       gchar *msg;
2351
2352       XGetErrorText (display_x11->xdisplay, error->error_code, buf, 63);
2353
2354       msg =
2355         g_strdup_printf ("The program '%s' received an X Window System error.\n"
2356                          "This probably reflects a bug in the program.\n"
2357                          "The error was '%s'.\n"
2358                          "  (Details: serial %ld error_code %d request_code %d minor_code %d)\n"
2359                          "  (Note to programmers: normally, X errors are reported asynchronously;\n"
2360                          "   that is, you will receive the error a while after causing it.\n"
2361                          "   To debug your program, run it with the GDK_SYNCHRONIZE environment\n"
2362                          "   variable to change this behavior. You can then get a meaningful\n"
2363                          "   backtrace from your debugger if you break on the gdk_x_error() function.)",
2364                          g_get_prgname (),
2365                          buf,
2366                          error->serial,
2367                          error->error_code,
2368                          error->request_code,
2369                          error->minor_code);
2370
2371 #ifdef G_ENABLE_DEBUG
2372       g_error ("%s", msg);
2373 #else /* !G_ENABLE_DEBUG */
2374       g_warning ("%s\n", msg);
2375
2376       _exit (1);
2377 #endif /* G_ENABLE_DEBUG */
2378     }
2379 }
2380
2381 static void
2382 delete_outdated_error_traps (GdkX11Display *display_x11)
2383 {
2384   GSList *tmp_list;
2385   gulong processed_sequence;
2386
2387   processed_sequence = XLastKnownRequestProcessed (display_x11->xdisplay);
2388
2389   tmp_list = display_x11->error_traps;
2390   while (tmp_list != NULL)
2391     {
2392       GdkErrorTrap *trap = tmp_list->data;
2393
2394       if (trap->end_sequence != 0 &&
2395           SEQUENCE_COMPARE (trap->end_sequence, <=, processed_sequence))
2396         {
2397           GSList *free_me = tmp_list;
2398
2399           tmp_list = tmp_list->next;
2400           display_x11->error_traps =
2401             g_slist_delete_link (display_x11->error_traps, free_me);
2402           g_slice_free (GdkErrorTrap, trap);
2403         }
2404       else
2405         {
2406           tmp_list = tmp_list->next;
2407         }
2408     }
2409 }
2410
2411 /**
2412  * gdk_x11_display_error_trap_push:
2413  * @display: (type GdkX11Display): a #GdkDisplay
2414  *
2415  * Begins a range of X requests on @display for which X error events
2416  * will be ignored. Unignored errors (when no trap is pushed) will abort
2417  * the application. Use gdk_x11_display_error_trap_pop() or
2418  * gdk_x11_display_error_trap_pop_ignored()to lift a trap pushed
2419  * with this function.
2420  *
2421  * See also gdk_error_trap_push() to push a trap on all displays.
2422  *
2423  * Since: 3.0
2424  */
2425 void
2426 gdk_x11_display_error_trap_push (GdkDisplay *display)
2427 {
2428   GdkX11Display *display_x11;
2429   GdkErrorTrap *trap;
2430
2431   display_x11 = GDK_X11_DISPLAY (display);
2432
2433   delete_outdated_error_traps (display_x11);
2434
2435   /* set up the Xlib callback to tell us about errors */
2436   _gdk_x11_error_handler_push ();
2437
2438   trap = g_slice_new0 (GdkErrorTrap);
2439
2440   trap->start_sequence = XNextRequest (display_x11->xdisplay);
2441   trap->error_code = Success;
2442
2443   display_x11->error_traps =
2444     g_slist_prepend (display_x11->error_traps, trap);
2445 }
2446
2447 static gint
2448 gdk_x11_display_error_trap_pop_internal (GdkDisplay *display,
2449                                          gboolean    need_code)
2450 {
2451   GdkX11Display *display_x11;
2452   GdkErrorTrap *trap;
2453   GSList *tmp_list;
2454   int result;
2455
2456   display_x11 = GDK_X11_DISPLAY (display);
2457
2458   g_return_val_if_fail (display_x11->error_traps != NULL, Success);
2459
2460   /* Find the first trap that hasn't been popped already */
2461   trap = NULL; /* quiet gcc */
2462   for (tmp_list = display_x11->error_traps;
2463        tmp_list != NULL;
2464        tmp_list = tmp_list->next)
2465     {
2466       trap = tmp_list->data;
2467
2468       if (trap->end_sequence == 0)
2469         break;
2470     }
2471
2472   g_return_val_if_fail (trap != NULL, Success);
2473   g_assert (trap->end_sequence == 0);
2474
2475   /* May need to sync to fill in trap->error_code if we care about
2476    * getting an error code.
2477    */
2478   if (need_code)
2479     {
2480       gulong processed_sequence;
2481       gulong next_sequence;
2482
2483       next_sequence = XNextRequest (display_x11->xdisplay);
2484       processed_sequence = XLastKnownRequestProcessed (display_x11->xdisplay);
2485
2486       /* If our last request was already processed, there is no point
2487        * in syncing. i.e. if last request was a round trip (or even if
2488        * we got an event with the serial of a non-round-trip)
2489        */
2490       if ((next_sequence - 1) != processed_sequence)
2491         {
2492           XSync (display_x11->xdisplay, False);
2493         }
2494
2495       result = trap->error_code;
2496     }
2497   else
2498     {
2499       result = Success;
2500     }
2501
2502   /* record end of trap, giving us a range of
2503    * error sequences we'll ignore.
2504    */
2505   trap->end_sequence = XNextRequest (display_x11->xdisplay);
2506
2507   /* remove the Xlib callback */
2508   _gdk_x11_error_handler_pop ();
2509
2510   /* we may already be outdated */
2511   delete_outdated_error_traps (display_x11);
2512
2513   return result;
2514 }
2515
2516 /**
2517  * gdk_x11_display_error_trap_pop:
2518  * @display: (type GdkX11Display): the display
2519  *
2520  * Pops the error trap pushed by gdk_x11_display_error_trap_push().
2521  * Will XSync() if necessary and will always block until
2522  * the error is known to have occurred or not occurred,
2523  * so the error code can be returned.
2524  *
2525  * If you don't need to use the return value,
2526  * gdk_x11_display_error_trap_pop_ignored() would be more efficient.
2527  *
2528  * See gdk_error_trap_pop() for the all-displays-at-once
2529  * equivalent.
2530  *
2531  * Since: 3.0
2532  *
2533  * Return value: X error code or 0 on success
2534  */
2535 gint
2536 gdk_x11_display_error_trap_pop (GdkDisplay *display)
2537 {
2538   g_return_val_if_fail (GDK_IS_X11_DISPLAY (display), Success);
2539
2540   return gdk_x11_display_error_trap_pop_internal (display, TRUE);
2541 }
2542
2543 /**
2544  * gdk_x11_display_error_trap_pop_ignored:
2545  * @display: (type GdkX11Display): the display
2546  *
2547  * Pops the error trap pushed by gdk_x11_display_error_trap_push().
2548  * Does not block to see if an error occurred; merely records the
2549  * range of requests to ignore errors for, and ignores those errors
2550  * if they arrive asynchronously.
2551  *
2552  * See gdk_error_trap_pop_ignored() for the all-displays-at-once
2553  * equivalent.
2554  *
2555  * Since: 3.0
2556  */
2557 void
2558 gdk_x11_display_error_trap_pop_ignored (GdkDisplay *display)
2559 {
2560   g_return_if_fail (GDK_IS_X11_DISPLAY (display));
2561
2562   gdk_x11_display_error_trap_pop_internal (display, FALSE);
2563 }
2564
2565 /**
2566  * gdk_x11_set_sm_client_id:
2567  * @sm_client_id: the client id assigned by the session manager when the
2568  *    connection was opened, or %NULL to remove the property.
2569  *
2570  * Sets the <literal>SM_CLIENT_ID</literal> property on the application's leader window so that
2571  * the window manager can save the application's state using the X11R6 ICCCM
2572  * session management protocol.
2573  *
2574  * See the X Session Management Library documentation for more information on
2575  * session management and the Inter-Client Communication Conventions Manual
2576  *
2577  * Since: 2.24
2578  */
2579 void
2580 gdk_x11_set_sm_client_id (const gchar *sm_client_id)
2581 {
2582  GSList *displays, *l;
2583
2584   g_free (gdk_sm_client_id);
2585   gdk_sm_client_id = g_strdup (sm_client_id);
2586
2587   displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
2588   for (l = displays; l; l = l->next)
2589     set_sm_client_id (l->data, sm_client_id);
2590
2591   g_slist_free (displays);
2592 }
2593
2594 static void
2595 gdk_x11_display_event_data_copy (GdkDisplay    *display,
2596                                 const GdkEvent *src,
2597                                 GdkEvent       *dst)
2598 {
2599 }
2600
2601 static void
2602 gdk_x11_display_event_data_free (GdkDisplay *display,
2603                                  GdkEvent *event)
2604 {
2605 }
2606
2607 static gint
2608 pop_error_trap (GdkDisplay *display,
2609                 gboolean    ignored)
2610 {
2611   if (ignored)
2612     {
2613       gdk_x11_display_error_trap_pop_ignored (display);
2614       return Success;
2615     }
2616   else
2617     {
2618       return gdk_x11_display_error_trap_pop (display);
2619     }
2620 }
2621
2622 static GdkKeymap *
2623 gdk_x11_display_get_keymap (GdkDisplay *display)
2624 {
2625   GdkX11Display *display_x11;
2626   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
2627   display_x11 = GDK_X11_DISPLAY (display);
2628
2629   if (!display_x11->keymap)
2630     display_x11->keymap = g_object_new (GDK_TYPE_X11_KEYMAP, NULL);
2631
2632   display_x11->keymap->display = display;
2633
2634   return display_x11->keymap;
2635 }
2636
2637 static void
2638 gdk_x11_display_class_init (GdkX11DisplayClass * class)
2639 {
2640   GObjectClass *object_class = G_OBJECT_CLASS (class);
2641   GdkDisplayClass *display_class = GDK_DISPLAY_CLASS (class);
2642
2643   object_class->dispose = gdk_x11_display_dispose;
2644   object_class->finalize = gdk_x11_display_finalize;
2645
2646   display_class->window_type = GDK_TYPE_X11_WINDOW;
2647
2648   display_class->get_name = gdk_x11_display_get_name;
2649   display_class->get_n_screens = gdk_x11_display_get_n_screens;
2650   display_class->get_screen = gdk_x11_display_get_screen;
2651   display_class->get_default_screen = gdk_x11_display_get_default_screen;
2652   display_class->beep = gdk_x11_display_beep;
2653   display_class->sync = gdk_x11_display_sync;
2654   display_class->flush = gdk_x11_display_flush;
2655   display_class->has_pending = gdk_x11_display_has_pending;
2656   display_class->queue_events = _gdk_x11_display_queue_events;
2657   display_class->get_default_group = gdk_x11_display_get_default_group;
2658   display_class->supports_selection_notification = gdk_x11_display_supports_selection_notification;
2659   display_class->request_selection_notification = gdk_x11_display_request_selection_notification;
2660   display_class->supports_clipboard_persistence = gdk_x11_display_supports_clipboard_persistence;
2661   display_class->store_clipboard = gdk_x11_display_store_clipboard;
2662   display_class->supports_shapes = gdk_x11_display_supports_shapes;
2663   display_class->supports_input_shapes = gdk_x11_display_supports_input_shapes;
2664   display_class->supports_composite = gdk_x11_display_supports_composite;
2665   display_class->list_devices = gdk_x11_display_list_devices;
2666   display_class->get_app_launch_context = _gdk_x11_display_get_app_launch_context;
2667   display_class->get_cursor_for_type = _gdk_x11_display_get_cursor_for_type;
2668   display_class->get_cursor_for_name = _gdk_x11_display_get_cursor_for_name;
2669   display_class->get_cursor_for_pixbuf = _gdk_x11_display_get_cursor_for_pixbuf;
2670   display_class->get_default_cursor_size = _gdk_x11_display_get_default_cursor_size;
2671   display_class->get_maximal_cursor_size = _gdk_x11_display_get_maximal_cursor_size;
2672   display_class->supports_cursor_alpha = _gdk_x11_display_supports_cursor_alpha;
2673   display_class->supports_cursor_color = _gdk_x11_display_supports_cursor_color;
2674
2675   display_class->before_process_all_updates = _gdk_x11_display_before_process_all_updates;
2676   display_class->after_process_all_updates = _gdk_x11_display_after_process_all_updates;
2677   display_class->get_next_serial = gdk_x11_display_get_next_serial;
2678   display_class->notify_startup_complete = gdk_x11_display_notify_startup_complete;
2679   display_class->event_data_copy = gdk_x11_display_event_data_copy;
2680   display_class->event_data_free = gdk_x11_display_event_data_free;
2681   display_class->create_window_impl = _gdk_x11_display_create_window_impl;
2682   display_class->get_keymap = gdk_x11_display_get_keymap;
2683   display_class->push_error_trap = gdk_x11_display_error_trap_push;
2684   display_class->pop_error_trap = pop_error_trap;
2685   display_class->get_selection_owner = _gdk_x11_display_get_selection_owner;
2686   display_class->set_selection_owner = _gdk_x11_display_set_selection_owner;
2687   display_class->send_selection_notify = _gdk_x11_display_send_selection_notify;
2688   display_class->get_selection_property = _gdk_x11_display_get_selection_property;
2689   display_class->convert_selection = _gdk_x11_display_convert_selection;
2690   display_class->text_property_to_utf8_list = _gdk_x11_display_text_property_to_utf8_list;
2691   display_class->utf8_to_string_target = _gdk_x11_display_utf8_to_string_target;
2692 }