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

   1 /* GDK - The GIMP Drawing Kit
   2  * Copyright (C) 1995-2007 Peter Mattis, Spencer Kimball,
   3  * Josh MacDonald, Ryan Lortie
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22  * Modified by the GTK+ Team and others 1997-2007.  See the AUTHORS
  23  * file for a list of people on the GTK+ Team.  See the ChangeLog
  24  * files for a list of changes.  These files are distributed with
  25  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  26  */
  27
  28 #include "config.h"
  29
  30 #include "gdk.h"
  31 #include "gdkprivate-x11.h"
  32 #include "gdkinternals.h"
  33 #include "gdkx.h"
  34 #include "gdkscreen-x11.h"
  35 #include "gdkdisplay-x11.h"
  36 #include "gdkasync.h"
  37
  38 #include "gdkkeysyms.h"
  39
  40 #include "xsettings-client.h"
  41
  42 #include <string.h>
  43
  44 #include "gdkinputprivate.h"
  45 #include "gdksettings.c"
  46 #include "gdkalias.h"
  47
  48
  49 #ifdef HAVE_XKB
  50 #include <X11/XKBlib.h>
  51 #endif
  52
  53 #ifdef HAVE_XSYNC
  54 #include <X11/extensions/sync.h>
  55 #endif
  56
  57 #ifdef HAVE_XFIXES
  58 #include <X11/extensions/Xfixes.h>
  59 #endif
  60
  61 #ifdef HAVE_RANDR
  62 #include <X11/extensions/Xrandr.h>
  63 #endif
  64
  65 #include <X11/Xatom.h>
  66
  67 typedef struct _GdkIOClosure GdkIOClosure;
  68 typedef struct _GdkDisplaySource GdkDisplaySource;
  69 typedef struct _GdkEventTypeX11 GdkEventTypeX11;
  70
  71 struct _GdkIOClosure
  72 {
  73   GdkInputFunction function;
  74   GdkInputCondition condition;
  75   GDestroyNotify notify;
  76   gpointer data;
  77 };
  78
  79 struct _GdkDisplaySource
  80 {
  81   GSource source;
  82
  83   GdkDisplay *display;
  84   GPollFD event_poll_fd;
  85 };
  86
  87 struct _GdkEventTypeX11
  88 {
  89   gint base;
  90   gint n_events;
  91 };
  92
  93 /*
  94  * Private function declarations
  95  */
  96
  97 static gint      gdk_event_apply_filters (XEvent   *xevent,
  98                                           GdkEvent *event,
  99                                           GList    *filters);
 100 static gboolean  gdk_event_translate     (GdkDisplay *display,
 101                                           GdkEvent   *event,
 102                                           XEvent     *xevent,
 103                                           gboolean    return_exposes);
 104
 105 static gboolean gdk_event_prepare  (GSource     *source,
 106                                     gint        *timeout);
 107 static gboolean gdk_event_check    (GSource     *source);
 108 static gboolean gdk_event_dispatch (GSource     *source,
 109                                     GSourceFunc  callback,
 110                                     gpointer     user_data);
 111
 112 static GdkFilterReturn gdk_wm_protocols_filter (GdkXEvent *xev,
 113                                                 GdkEvent  *event,
 114                                                 gpointer   data);
 115
 116 static GSource *gdk_display_source_new (GdkDisplay *display);
 117 static gboolean gdk_check_xpending     (GdkDisplay *display);
 118
 119 static Bool gdk_xsettings_watch_cb  (Window            window,
 120                                      Bool              is_start,
 121                                      long              mask,
 122                                      void             *cb_data);
 123 static void gdk_xsettings_notify_cb (const char       *name,
 124                                      XSettingsAction   action,
 125                                      XSettingsSetting *setting,
 126                                      void             *data);
 127
 128 /* Private variable declarations
 129  */
 130
 131 static GList *display_sources;
 132
 133 static GSourceFuncs event_funcs = {
 134   gdk_event_prepare,
 135   gdk_event_check,
 136   gdk_event_dispatch,
 137   NULL
 138 };
 139
 140 static GSource *
 141 gdk_display_source_new (GdkDisplay *display)
 142 {
 143   GSource *source = g_source_new (&event_funcs, sizeof (GdkDisplaySource));
 144   GdkDisplaySource *display_source = (GdkDisplaySource *)source;
 145
 146   display_source->display = display;
 147
 148   return source;
 149 }
 150
 151 static gboolean
 152 gdk_check_xpending (GdkDisplay *display)
 153 {
 154   return XPending (GDK_DISPLAY_XDISPLAY (display));
 155 }
 156
 157 /*********************************************
 158  * Functions for maintaining the event queue *
 159  *********************************************/
 160
 161 static void
 162 refcounted_grab_server (Display *xdisplay)
 163 {
 164   GdkDisplay *display = gdk_x11_lookup_xdisplay (xdisplay);
 165
 166   gdk_x11_display_grab (display);
 167 }
 168
 169 static void
 170 refcounted_ungrab_server (Display *xdisplay)
 171 {
 172   GdkDisplay *display = gdk_x11_lookup_xdisplay (xdisplay);
 173
 174   gdk_x11_display_ungrab (display);
 175 }
 176
 177 void
 178 _gdk_x11_events_init_screen (GdkScreen *screen)
 179 {
 180   GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
 181
 182   /* Keep a flag to avoid extra notifies that we don't need
 183    */
 184   screen_x11->xsettings_in_init = TRUE;
 185   screen_x11->xsettings_client = xsettings_client_new_with_grab_funcs (screen_x11->xdisplay,
 186                                                                        screen_x11->screen_num,
 187                                                                        gdk_xsettings_notify_cb,
 188                                                                        gdk_xsettings_watch_cb,
 189                                                                        screen,
 190                                                                        refcounted_grab_server,
 191                                                                        refcounted_ungrab_server);
 192   screen_x11->xsettings_in_init = FALSE;
 193 }
 194
 195 void
 196 _gdk_x11_events_uninit_screen (GdkScreen *screen)
 197 {
 198   GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
 199
 200   if (screen_x11->xsettings_client)
 201     {
 202       xsettings_client_destroy (screen_x11->xsettings_client);
 203       screen_x11->xsettings_client = NULL;
 204     }
 205 }
 206
 207 void
 208 _gdk_events_init (GdkDisplay *display)
 209 {
 210   GSource *source;
 211   GdkDisplaySource *display_source;
 212   GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
 213
 214   int connection_number = ConnectionNumber (display_x11->xdisplay);
 215   GDK_NOTE (MISC, g_message ("connection number: %d", connection_number));
 216
 217
 218   source = display_x11->event_source = gdk_display_source_new (display);
 219   display_source = (GdkDisplaySource*) source;
 220   g_source_set_priority (source, GDK_PRIORITY_EVENTS);
 221
 222   display_source->event_poll_fd.fd = connection_number;
 223   display_source->event_poll_fd.events = G_IO_IN;
 224
 225   g_source_add_poll (source, &display_source->event_poll_fd);
 226   g_source_set_can_recurse (source, TRUE);
 227   g_source_attach (source, NULL);
 228
 229   display_sources = g_list_prepend (display_sources,display_source);
 230
 231   gdk_display_add_client_message_filter (display,
 232                                          gdk_atom_intern_static_string ("WM_PROTOCOLS"),
 233                                          gdk_wm_protocols_filter,
 234                                          NULL);
 235 }
 236
 237 void
 238 _gdk_events_uninit (GdkDisplay *display)
 239 {
 240   GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
 241
 242   if (display_x11->event_source)
 243     {
 244       display_sources = g_list_remove (display_sources,
 245                                        display_x11->event_source);
 246       g_source_destroy (display_x11->event_source);
 247       g_source_unref (display_x11->event_source);
 248       display_x11->event_source = NULL;
 249     }
 250 }
 251
 252 /**
 253  * gdk_events_pending:
 254  *
 255  * Checks if any events are ready to be processed for any display.
 256  *
 257  * Return value:  %TRUE if any events are pending.
 258  **/
 259 gboolean
 260 gdk_events_pending (void)
 261 {
 262   GList *tmp_list;
 263
 264   for (tmp_list = display_sources; tmp_list; tmp_list = tmp_list->next)
 265     {
 266       GdkDisplaySource *tmp_source = tmp_list->data;
 267       GdkDisplay *display = tmp_source->display;
 268
 269       if (_gdk_event_queue_find_first (display))
 270         return TRUE;
 271     }
 272
 273   for (tmp_list = display_sources; tmp_list; tmp_list = tmp_list->next)
 274     {
 275       GdkDisplaySource *tmp_source = tmp_list->data;
 276       GdkDisplay *display = tmp_source->display;
 277
 278       if (gdk_check_xpending (display))
 279         return TRUE;
 280     }
 281
 282   return FALSE;
 283 }
 284
 285 static Bool
 286 graphics_expose_predicate (Display  *display,
 287                            XEvent   *xevent,
 288                            XPointer  arg)
 289 {
 290   if (xevent->xany.window == GDK_DRAWABLE_XID ((GdkDrawable *)arg) &&
 291       (xevent->xany.type == GraphicsExpose ||
 292        xevent->xany.type == NoExpose))
 293     return True;
 294   else
 295     return False;
 296 }
 297
 298 /**
 299  * gdk_event_get_graphics_expose:
 300  * @window: the #GdkWindow to wait for the events for.
 301  *
 302  * Waits for a GraphicsExpose or NoExpose event from the X server.
 303  * This is used in the #GtkText and #GtkCList widgets in GTK+ to make sure any
 304  * GraphicsExpose events are handled before the widget is scrolled.
 305  *
 306  * Return value:  a #GdkEventExpose if a GraphicsExpose was received, or %NULL if a
 307  * NoExpose event was received.
 308  **/
 309 GdkEvent*
 310 gdk_event_get_graphics_expose (GdkWindow *window)
 311 {
 312   XEvent xevent;
 313   GdkEvent *event;
 314
 315   g_return_val_if_fail (window != NULL, NULL);
 316
 317   XIfEvent (GDK_WINDOW_XDISPLAY (window), &xevent,
 318             graphics_expose_predicate, (XPointer) window);
 319
 320   if (xevent.xany.type == GraphicsExpose)
 321     {
 322       event = gdk_event_new (GDK_NOTHING);
 323
 324       if (gdk_event_translate (GDK_WINDOW_DISPLAY (window), event,
 325                                &xevent, TRUE))
 326         return event;
 327       else
 328         gdk_event_free (event);
 329     }
 330
 331   return NULL;
 332 }
 333
 334 static gint
 335 gdk_event_apply_filters (XEvent *xevent,
 336                          GdkEvent *event,
 337                          GList *filters)
 338 {
 339   GList *tmp_list;
 340   GdkFilterReturn result;
 341
 342   tmp_list = filters;
 343
 344   while (tmp_list)
 345     {
 346       GdkEventFilter *filter = (GdkEventFilter*) tmp_list->data;
 347
 348       tmp_list = tmp_list->next;
 349       result = filter->function (xevent, event, filter->data);
 350       if (result !=  GDK_FILTER_CONTINUE)
 351         return result;
 352     }
 353
 354   return GDK_FILTER_CONTINUE;
 355 }
 356
 357 /**
 358  * gdk_display_add_client_message_filter:
 359  * @display: a #GdkDisplay for which this message filter applies
 360  * @message_type: the type of ClientMessage events to receive.
 361  *   This will be checked against the @message_type field
 362  *   of the XClientMessage event struct.
 363  * @func: the function to call to process the event.
 364  * @data: user data to pass to @func.
 365  *
 366  * Adds a filter to be called when X ClientMessage events are received.
 367  * See gdk_window_add_filter() if you are interested in filtering other
 368  * types of events.
 369  *
 370  * Since: 2.2
 371  **/
 372 void
 373 gdk_display_add_client_message_filter (GdkDisplay   *display,
 374                                        GdkAtom       message_type,
 375                                        GdkFilterFunc func,
 376                                        gpointer      data)
 377 {
 378   GdkClientFilter *filter;
 379   g_return_if_fail (GDK_IS_DISPLAY (display));
 380   filter = g_new (GdkClientFilter, 1);
 381
 382   filter->type = message_type;
 383   filter->function = func;
 384   filter->data = data;
 385
 386   GDK_DISPLAY_X11(display)->client_filters =
 387     g_list_append (GDK_DISPLAY_X11 (display)->client_filters,
 388                    filter);
 389 }
 390
 391 /**
 392  * gdk_add_client_message_filter:
 393  * @message_type: the type of ClientMessage events to receive. This will be
 394  *     checked against the <structfield>message_type</structfield> field of the
 395  *     XClientMessage event struct.
 396  * @func: the function to call to process the event.
 397  * @data: user data to pass to @func.
 398  *
 399  * Adds a filter to the default display to be called when X ClientMessage events
 400  * are received. See gdk_display_add_client_message_filter().
 401  **/
 402 void
 403 gdk_add_client_message_filter (GdkAtom       message_type,
 404                                GdkFilterFunc func,
 405                                gpointer      data)
 406 {
 407   gdk_display_add_client_message_filter (gdk_display_get_default (),
 408                                          message_type, func, data);
 409 }
 410
 411 static void
 412 do_net_wm_state_changes (GdkWindow *window)
 413 {
 414   GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window);
 415   GdkWindowState old_state;
 416
 417   if (GDK_WINDOW_DESTROYED (window) ||
 418       gdk_window_get_window_type (window) != GDK_WINDOW_TOPLEVEL)
 419     return;
 420
 421   old_state = gdk_window_get_state (window);
 422
 423   /* For found_sticky to remain TRUE, we have to also be on desktop
 424    * 0xFFFFFFFF
 425    */
 426   if (old_state & GDK_WINDOW_STATE_STICKY)
 427     {
 428       if (!(toplevel->have_sticky && toplevel->on_all_desktops))
 429         gdk_synthesize_window_state (window,
 430                                      GDK_WINDOW_STATE_STICKY,
 431                                      0);
 432     }
 433   else
 434     {
 435       if (toplevel->have_sticky || toplevel->on_all_desktops)
 436         gdk_synthesize_window_state (window,
 437                                      0,
 438                                      GDK_WINDOW_STATE_STICKY);
 439     }
 440
 441   if (old_state & GDK_WINDOW_STATE_FULLSCREEN)
 442     {
 443       if (!toplevel->have_fullscreen)
 444         gdk_synthesize_window_state (window,
 445                                      GDK_WINDOW_STATE_FULLSCREEN,
 446                                      0);
 447     }
 448   else
 449     {
 450       if (toplevel->have_fullscreen)
 451         gdk_synthesize_window_state (window,
 452                                      0,
 453                                      GDK_WINDOW_STATE_FULLSCREEN);
 454     }
 455
 456   /* Our "maximized" means both vertical and horizontal; if only one,
 457    * we don't expose that via GDK
 458    */
 459   if (old_state & GDK_WINDOW_STATE_MAXIMIZED)
 460     {
 461       if (!(toplevel->have_maxvert && toplevel->have_maxhorz))
 462         gdk_synthesize_window_state (window,
 463                                      GDK_WINDOW_STATE_MAXIMIZED,
 464                                      0);
 465     }
 466   else
 467     {
 468       if (toplevel->have_maxvert && toplevel->have_maxhorz)
 469         gdk_synthesize_window_state (window,
 470                                      0,
 471                                      GDK_WINDOW_STATE_MAXIMIZED);
 472     }
 473 }
 474
 475 static void
 476 gdk_check_wm_desktop_changed (GdkWindow *window)
 477 {
 478   GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window);
 479   GdkDisplay *display = GDK_WINDOW_DISPLAY (window);
 480
 481   Atom type;
 482   gint format;
 483   gulong nitems;
 484   gulong bytes_after;
 485   guchar *data;
 486   gulong *desktop;
 487
 488   type = None;
 489   gdk_error_trap_push ();
 490   XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display),
 491                       GDK_WINDOW_XID (window),
 492                       gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP"),
 493                       0, G_MAXLONG, False, XA_CARDINAL, &type,
 494                       &format, &nitems,
 495                       &bytes_after, &data);
 496   gdk_error_trap_pop ();
 497
 498   if (type != None)
 499     {
 500       desktop = (gulong *)data;
 501       toplevel->on_all_desktops = (*desktop == 0xFFFFFFFF);
 502       XFree (desktop);
 503     }
 504   else
 505     toplevel->on_all_desktops = FALSE;
 506
 507   do_net_wm_state_changes (window);
 508 }
 509
 510 static void
 511 gdk_check_wm_state_changed (GdkWindow *window)
 512 {
 513   GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window);
 514   GdkDisplay *display = GDK_WINDOW_DISPLAY (window);
 515
 516   Atom type;
 517   gint format;
 518   gulong nitems;
 519   gulong bytes_after;
 520   guchar *data;
 521   Atom *atoms = NULL;
 522   gulong i;
 523
 524   gboolean had_sticky = toplevel->have_sticky;
 525
 526   toplevel->have_sticky = FALSE;
 527   toplevel->have_maxvert = FALSE;
 528   toplevel->have_maxhorz = FALSE;
 529   toplevel->have_fullscreen = FALSE;
 530
 531   type = None;
 532   gdk_error_trap_push ();
 533   XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (window),
 534                       gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE"),
 535                       0, G_MAXLONG, False, XA_ATOM, &type, &format, &nitems,
 536                       &bytes_after, &data);
 537   gdk_error_trap_pop ();
 538
 539   if (type != None)
 540     {
 541       Atom sticky_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_STICKY");
 542       Atom maxvert_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_MAXIMIZED_VERT");
 543       Atom maxhorz_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_MAXIMIZED_HORZ");
 544       Atom fullscreen_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_FULLSCREEN");
 545
 546       atoms = (Atom *)data;
 547
 548       i = 0;
 549       while (i < nitems)
 550         {
 551           if (atoms[i] == sticky_atom)
 552             toplevel->have_sticky = TRUE;
 553           else if (atoms[i] == maxvert_atom)
 554             toplevel->have_maxvert = TRUE;
 555           else if (atoms[i] == maxhorz_atom)
 556             toplevel->have_maxhorz = TRUE;
 557           else if (atoms[i] == fullscreen_atom)
 558             toplevel->have_fullscreen = TRUE;
 559
 560           ++i;
 561         }
 562
 563       XFree (atoms);
 564     }
 565
 566   /* When have_sticky is turned on, we have to check the DESKTOP property
 567    * as well.
 568    */
 569   if (toplevel->have_sticky && !had_sticky)
 570     gdk_check_wm_desktop_changed (window);
 571   else
 572     do_net_wm_state_changes (window);
 573 }
 574
 575 #define HAS_FOCUS(toplevel)                           \
 576   ((toplevel)->has_focus || (toplevel)->has_pointer_focus)
 577
 578 static void
 579 generate_focus_event (GdkWindow *window,
 580                       gboolean   in)
 581 {
 582   GdkEvent event;
 583
 584   event.type = GDK_FOCUS_CHANGE;
 585   event.focus_change.window = window;
 586   event.focus_change.send_event = FALSE;
 587   event.focus_change.in = in;
 588
 589   gdk_event_put (&event);
 590 }
 591
 592 static gboolean
 593 set_screen_from_root (GdkDisplay *display,
 594                       GdkEvent   *event,
 595                       Window      xrootwin)
 596 {
 597   GdkScreen *screen;
 598
 599   screen = _gdk_x11_display_screen_for_xrootwin (display, xrootwin);
 600
 601   if (screen)
 602     {
 603       gdk_event_set_screen (event, screen);
 604
 605       return TRUE;
 606     }
 607
 608   return FALSE;
 609 }
 610
 611 static void
 612 translate_key_event (GdkDisplay *display,
 613                      GdkEvent   *event,
 614                      XEvent     *xevent)
 615 {
 616   GdkKeymap *keymap = gdk_keymap_get_for_display (display);
 617   gunichar c = 0;
 618   gchar buf[7];
 619
 620   event->key.type = xevent->xany.type == KeyPress ? GDK_KEY_PRESS : GDK_KEY_RELEASE;
 621   event->key.time = xevent->xkey.time;
 622
 623   event->key.state = (GdkModifierType) xevent->xkey.state;
 624   event->key.group = _gdk_x11_get_group_for_state (display, xevent->xkey.state);
 625   event->key.hardware_keycode = xevent->xkey.keycode;
 626
 627   event->key.keyval = GDK_VoidSymbol;
 628
 629   gdk_keymap_translate_keyboard_state (keymap,
 630                                        event->key.hardware_keycode,
 631                                        event->key.state,
 632                                        event->key.group,
 633                                        &event->key.keyval,
 634                                        NULL, NULL, NULL);
 635
 636   _gdk_keymap_add_virtual_modifiers (keymap, &event->key.state);
 637   event->key.is_modifier = _gdk_keymap_key_is_modifier (keymap, event->key.hardware_keycode);
 638
 639   /* Fill in event->string crudely, since various programs
 640    * depend on it.
 641    */
 642   event->key.string = NULL;
 643
 644   if (event->key.keyval != GDK_VoidSymbol)
 645     c = gdk_keyval_to_unicode (event->key.keyval);
 646
 647   if (c)
 648     {
 649       gsize bytes_written;
 650       gint len;
 651
 652       /* Apply the control key - Taken from Xlib
 653        */
 654       if (event->key.state & GDK_CONTROL_MASK)
 655         {
 656           if ((c >= '@' && c < '\177') || c == ' ') c &= 0x1F;
 657           else if (c == '2')
 658             {
 659               event->key.string = g_memdup ("\0\0", 2);
 660               event->key.length = 1;
 661               buf[0] = '\0';
 662               goto out;
 663             }
 664           else if (c >= '3' && c <= '7') c -= ('3' - '\033');
 665           else if (c == '8') c = '\177';
 666           else if (c == '/') c = '_' & 0x1F;
 667         }
 668
 669       len = g_unichar_to_utf8 (c, buf);
 670       buf[len] = '\0';
 671
 672       event->key.string = g_locale_from_utf8 (buf, len,
 673                                               NULL, &bytes_written,
 674                                               NULL);
 675       if (event->key.string)
 676         event->key.length = bytes_written;
 677     }
 678   else if (event->key.keyval == GDK_Escape)
 679     {
 680       event->key.length = 1;
 681       event->key.string = g_strdup ("\033");
 682     }
 683   else if (event->key.keyval == GDK_Return ||
 684           event->key.keyval == GDK_KP_Enter)
 685     {
 686       event->key.length = 1;
 687       event->key.string = g_strdup ("\r");
 688     }
 689
 690   if (!event->key.string)
 691     {
 692       event->key.length = 0;
 693       event->key.string = g_strdup ("");
 694     }
 695
 696  out:
 697 #ifdef G_ENABLE_DEBUG
 698   if (_gdk_debug_flags & GDK_DEBUG_EVENTS)
 699     {
 700       g_message ("%s:\t\twindow: %ld     key: %12s  %d",
 701                  event->type == GDK_KEY_PRESS ? "key press  " : "key release",
 702                  xevent->xkey.window,
 703                  event->key.keyval ? gdk_keyval_name (event->key.keyval) : "(none)",
 704                  event->key.keyval);
 705
 706       if (event->key.length > 0)
 707         g_message ("\t\tlength: %4d string: \"%s\"",
 708                    event->key.length, buf);
 709     }
 710 #endif /* G_ENABLE_DEBUG */
 711   return;
 712 }
 713
 714 /**
 715  * gdk_x11_register_standard_event_type:
 716  * @display: a #GdkDisplay
 717  * @event_base: first event type code to register
 718  * @n_events: number of event type codes to register
 719  *
 720  * Registers interest in receiving extension events with type codes
 721  * between @event_base and <literal>event_base + n_events - 1</literal>.
 722  * The registered events must have the window field in the same place
 723  * as core X events (this is not the case for e.g. XKB extension events).
 724  *
 725  * If an event type is registered, events of this type will go through
 726  * global and window-specific filters (see gdk_window_add_filter()).
 727  * Unregistered events will only go through global filters.
 728  * GDK may register the events of some X extensions on its own.
 729  *
 730  * This function should only be needed in unusual circumstances, e.g.
 731  * when filtering XInput extension events on the root window.
 732  *
 733  * Since: 2.4
 734  **/
 735 void
 736 gdk_x11_register_standard_event_type (GdkDisplay          *display,
 737                                       gint                 event_base,
 738                                       gint                 n_events)
 739 {
 740   GdkEventTypeX11 *event_type;
 741   GdkDisplayX11 *display_x11;
 742
 743   display_x11 = GDK_DISPLAY_X11 (display);
 744   event_type = g_new (GdkEventTypeX11, 1);
 745
 746   event_type->base = event_base;
 747   event_type->n_events = n_events;
 748
 749   display_x11->event_types = g_slist_prepend (display_x11->event_types, event_type);
 750 }
 751
 752 /* Return the window this has to do with, if any, rather
 753  * than the frame or root window that was selecting
 754  * for substructure
 755  */
 756 static void
 757 get_real_window (GdkDisplay *display,
 758                  XEvent     *event,
 759                  Window     *event_window,
 760                  Window     *filter_window)
 761 {
 762   /* Core events all have an event->xany.window field, but that's
 763    * not true for extension events
 764    */
 765   if (event->type >= KeyPress &&
 766       event->type <= MappingNotify)
 767     {
 768       *filter_window = event->xany.window;
 769       switch (event->type)
 770         {
 771         case CreateNotify:
 772           *event_window = event->xcreatewindow.window;
 773           break;
 774         case DestroyNotify:
 775           *event_window = event->xdestroywindow.window;
 776           break;
 777         case UnmapNotify:
 778           *event_window = event->xunmap.window;
 779           break;
 780         case MapNotify:
 781           *event_window = event->xmap.window;
 782           break;
 783         case MapRequest:
 784           *event_window = event->xmaprequest.window;
 785           break;
 786         case ReparentNotify:
 787           *event_window = event->xreparent.window;
 788           break;
 789         case ConfigureNotify:
 790           *event_window = event->xconfigure.window;
 791           break;
 792         case ConfigureRequest:
 793           *event_window = event->xconfigurerequest.window;
 794           break;
 795         case GravityNotify:
 796           *event_window = event->xgravity.window;
 797           break;
 798         case CirculateNotify:
 799           *event_window = event->xcirculate.window;
 800           break;
 801         case CirculateRequest:
 802           *event_window = event->xcirculaterequest.window;
 803           break;
 804         default:
 805           *event_window = event->xany.window;
 806         }
 807     }
 808   else
 809     {
 810       GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
 811       GSList *tmp_list;
 812
 813       for (tmp_list = display_x11->event_types;
 814            tmp_list;
 815            tmp_list = tmp_list->next)
 816         {
 817           GdkEventTypeX11 *event_type = tmp_list->data;
 818
 819           if (event->type >= event_type->base &&
 820               event->type < event_type->base + event_type->n_events)
 821             {
 822               *event_window = event->xany.window;
 823               *filter_window = event->xany.window;
 824               return;
 825             }
 826         }
 827
 828       *event_window = None;
 829       *filter_window = None;
 830     }
 831 }
 832
 833 #ifdef G_ENABLE_DEBUG
 834 static const char notify_modes[][19] = {
 835   "NotifyNormal",
 836   "NotifyGrab",
 837   "NotifyUngrab",
 838   "NotifyWhileGrabbed"
 839 };
 840
 841 static const char notify_details[][23] = {
 842   "NotifyAncestor",
 843   "NotifyVirtual",
 844   "NotifyInferior",
 845   "NotifyNonlinear",
 846   "NotifyNonlinearVirtual",
 847   "NotifyPointer",
 848   "NotifyPointerRoot",
 849   "NotifyDetailNone"
 850 };
 851 #endif
 852
 853 static void
 854 set_user_time (GdkWindow *window,
 855                GdkEvent  *event)
 856 {
 857   g_return_if_fail (event != NULL);
 858
 859   window = gdk_window_get_toplevel (event->client.window);
 860   g_return_if_fail (GDK_IS_WINDOW (window));
 861
 862   /* If an event doesn't have a valid timestamp, we shouldn't use it
 863    * to update the latest user interaction time.
 864    */
 865   if (gdk_event_get_time (event) != GDK_CURRENT_TIME)
 866     gdk_x11_window_set_user_time (gdk_window_get_toplevel (window),
 867                                   gdk_event_get_time (event));
 868 }
 869
 870 static gboolean
 871 is_parent_of (GdkWindow *parent,
 872               GdkWindow *child)
 873 {
 874   GdkWindow *w;
 875
 876   w = child;
 877   while (w != NULL)
 878     {
 879       if (w == parent)
 880         return TRUE;
 881
 882       w = gdk_window_get_parent (w);
 883     }
 884
 885   return FALSE;
 886 }
 887
 888 static gboolean
 889 gdk_event_translate (GdkDisplay *display,
 890                      GdkEvent   *event,
 891                      XEvent     *xevent,
 892                      gboolean    return_exposes)
 893 {
 894
 895   GdkWindow *window;
 896   GdkWindowObject *window_private;
 897   GdkWindow *filter_window;
 898   GdkWindowImplX11 *window_impl = NULL;
 899   gboolean return_val;
 900   GdkScreen *screen = NULL;
 901   GdkScreenX11 *screen_x11 = NULL;
 902   GdkToplevelX11 *toplevel = NULL;
 903   GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
 904   Window xwindow, filter_xwindow;
 905
 906   return_val = FALSE;
 907
 908   /* init these, since the done: block uses them */
 909   window = NULL;
 910   window_private = NULL;
 911   event->any.window = NULL;
 912
 913   if (_gdk_default_filters)
 914     {
 915       /* Apply global filters */
 916       GdkFilterReturn result;
 917       result = gdk_event_apply_filters (xevent, event,
 918                                         _gdk_default_filters);
 919
 920       if (result != GDK_FILTER_CONTINUE)
 921         {
 922           return_val = (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
 923           goto done;
 924         }
 925     }
 926
 927   /* Find the GdkWindow that this event relates to.
 928    * Basically this means substructure events
 929    * are reported same as structure events
 930    */
 931   get_real_window (display, xevent, &xwindow, &filter_xwindow);
 932
 933   window = gdk_window_lookup_for_display (display, xwindow);
 934   /* We may receive events such as NoExpose/GraphicsExpose
 935    * and ShmCompletion for pixmaps
 936    */
 937   if (window && !GDK_IS_WINDOW (window))
 938     window = NULL;
 939   window_private = (GdkWindowObject *) window;
 940
 941   /* We always run the filters for the window where the event
 942    * is delivered, not the window that it relates to
 943    */
 944   if (filter_xwindow == xwindow)
 945     filter_window = window;
 946   else
 947     {
 948       filter_window = gdk_window_lookup_for_display (display, filter_xwindow);
 949       if (filter_window && !GDK_IS_WINDOW (filter_window))
 950         filter_window = NULL;
 951     }
 952
 953   if (window)
 954     {
 955       screen = GDK_WINDOW_SCREEN (window);
 956       screen_x11 = GDK_SCREEN_X11 (screen);
 957       toplevel = _gdk_x11_window_get_toplevel (window);
 958     }
 959
 960   if (window != NULL)
 961     {
 962       /* Apply keyboard grabs to non-native windows */
 963       if (/* Is key event */
 964           (xevent->type == KeyPress || xevent->type == KeyRelease) &&
 965           /* And we have a grab */
 966           display->keyboard_grab.window != NULL &&
 967           (
 968            /* The window is not a descendant of the grabbed window */
 969            !is_parent_of ((GdkWindow *)display->keyboard_grab.window, window) ||
 970            /* Or owner event is false */
 971            !display->keyboard_grab.owner_events
 972            )
 973           )
 974         {
 975           /* Report key event against grab window */
 976           window = display->keyboard_grab.window;;
 977           window_private = (GdkWindowObject *) window;
 978         }
 979
 980       window_impl = GDK_WINDOW_IMPL_X11 (window_private->impl);
 981
 982       /* Move key events on focus window to the real toplevel, and
 983        * filter out all other events on focus window
 984        */
 985       if (toplevel && xwindow == toplevel->focus_window)
 986         {
 987           switch (xevent->type)
 988             {
 989             case KeyPress:
 990             case KeyRelease:
 991               xwindow = GDK_WINDOW_XID (window);
 992               xevent->xany.window = xwindow;
 993               break;
 994             default:
 995               return FALSE;
 996             }
 997         }
 998
 999       g_object_ref (window);
1000     }
1001
1002   event->any.window = window;
1003   event->any.send_event = xevent->xany.send_event ? TRUE : FALSE;
1004
1005   if (window_private && GDK_WINDOW_DESTROYED (window))
1006     {
1007       if (xevent->type != DestroyNotify)
1008         {
1009           return_val = FALSE;
1010           goto done;
1011         }
1012     }
1013   else if (filter_window)
1014     {
1015       /* Apply per-window filters */
1016       GdkWindowObject *filter_private = (GdkWindowObject *) filter_window;
1017       GdkFilterReturn result;
1018
1019       if (filter_private->filters)
1020         {
1021           g_object_ref (filter_window);
1022
1023           result = gdk_event_apply_filters (xevent, event,
1024                                             filter_private->filters);
1025
1026           g_object_unref (filter_window);
1027
1028           if (result != GDK_FILTER_CONTINUE)
1029             {
1030               return_val = (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
1031               goto done;
1032             }
1033         }
1034     }
1035
1036   if (screen_x11 && screen_x11->wmspec_check_window != None &&
1037       xwindow == screen_x11->wmspec_check_window)
1038     {
1039       if (xevent->type == DestroyNotify)
1040         {
1041           screen_x11->wmspec_check_window = None;
1042           g_free (screen_x11->window_manager_name);
1043           screen_x11->window_manager_name = g_strdup ("unknown");
1044
1045           /* careful, reentrancy */
1046           _gdk_x11_screen_window_manager_changed (GDK_SCREEN (screen_x11));
1047         }
1048
1049       /* Eat events on this window unless someone had wrapped
1050        * it as a foreign window
1051        */
1052       if (window == NULL)
1053         {
1054           return_val = FALSE;
1055           goto done;
1056         }
1057     }
1058
1059   if (window &&
1060       (xevent->xany.type == MotionNotify ||
1061        xevent->xany.type == ButtonRelease))
1062     {
1063       if (_gdk_moveresize_handle_event (xevent))
1064         {
1065           return_val = FALSE;
1066           goto done;
1067         }
1068     }
1069
1070   /* We do a "manual" conversion of the XEvent to a
1071    *  GdkEvent. The structures are mostly the same so
1072    *  the conversion is fairly straightforward. We also
1073    *  optionally print debugging info regarding events
1074    *  received.
1075    */
1076
1077   return_val = TRUE;
1078
1079   switch (xevent->type)
1080     {
1081     case KeyPress:
1082       if (window_private == NULL)
1083         {
1084           return_val = FALSE;
1085           break;
1086         }
1087       translate_key_event (display, event, xevent);
1088       set_user_time (window, event);
1089       break;
1090
1091     case KeyRelease:
1092       if (window_private == NULL)
1093         {
1094           return_val = FALSE;
1095           break;
1096         }
1097
1098       /* Emulate detectable auto-repeat by checking to see
1099        * if the next event is a key press with the same
1100        * keycode and timestamp, and if so, ignoring the event.
1101        */
1102
1103       if (!display_x11->have_xkb_autorepeat && XPending (xevent->xkey.display))
1104         {
1105           XEvent next_event;
1106
1107           XPeekEvent (xevent->xkey.display, &next_event);
1108
1109           if (next_event.type == KeyPress &&
1110               next_event.xkey.keycode == xevent->xkey.keycode &&
1111               next_event.xkey.time == xevent->xkey.time)
1112             {
1113               return_val = FALSE;
1114               break;
1115             }
1116         }
1117
1118       translate_key_event (display, event, xevent);
1119       break;
1120
1121     case ButtonPress:
1122       GDK_NOTE (EVENTS,
1123                 g_message ("button press:\t\twindow: %ld  x,y: %d %d  button: %d",
1124                            xevent->xbutton.window,
1125                            xevent->xbutton.x, xevent->xbutton.y,
1126                            xevent->xbutton.button));
1127
1128       if (window_private == NULL)
1129         {
1130           return_val = FALSE;
1131           break;
1132         }
1133
1134       /* If we get a ButtonPress event where the button is 4 or 5,
1135          it's a Scroll event */
1136       switch (xevent->xbutton.button)
1137         {
1138         case 4: /* up */
1139         case 5: /* down */
1140         case 6: /* left */
1141         case 7: /* right */
1142           event->scroll.type = GDK_SCROLL;
1143
1144           if (xevent->xbutton.button == 4)
1145             event->scroll.direction = GDK_SCROLL_UP;
1146           else if (xevent->xbutton.button == 5)
1147             event->scroll.direction = GDK_SCROLL_DOWN;
1148           else if (xevent->xbutton.button == 6)
1149             event->scroll.direction = GDK_SCROLL_LEFT;
1150           else
1151             event->scroll.direction = GDK_SCROLL_RIGHT;
1152
1153           event->scroll.window = window;
1154           event->scroll.time = xevent->xbutton.time;
1155           event->scroll.x = xevent->xbutton.x;
1156           event->scroll.y = xevent->xbutton.y;
1157           event->scroll.x_root = (gfloat)xevent->xbutton.x_root;
1158           event->scroll.y_root = (gfloat)xevent->xbutton.y_root;
1159           event->scroll.state = (GdkModifierType) xevent->xbutton.state;
1160           event->scroll.device = display->core_pointer;
1161
1162           if (!set_screen_from_root (display, event, xevent->xbutton.root))
1163             {
1164               return_val = FALSE;
1165               break;
1166             }
1167
1168           break;
1169
1170         default:
1171           event->button.type = GDK_BUTTON_PRESS;
1172           event->button.window = window;
1173           event->button.time = xevent->xbutton.time;
1174           event->button.x = xevent->xbutton.x;
1175           event->button.y = xevent->xbutton.y;
1176           event->button.x_root = (gfloat)xevent->xbutton.x_root;
1177           event->button.y_root = (gfloat)xevent->xbutton.y_root;
1178           event->button.axes = NULL;
1179           event->button.state = (GdkModifierType) xevent->xbutton.state;
1180           event->button.button = xevent->xbutton.button;
1181           event->button.device = display->core_pointer;
1182
1183           if (!set_screen_from_root (display, event, xevent->xbutton.root))
1184             {
1185               return_val = FALSE;
1186               break;
1187             }
1188           break;
1189         }
1190
1191       set_user_time (window, event);
1192
1193       break;
1194
1195     case ButtonRelease:
1196       GDK_NOTE (EVENTS,
1197                 g_message ("button release:\twindow: %ld  x,y: %d %d  button: %d",
1198                            xevent->xbutton.window,
1199                            xevent->xbutton.x, xevent->xbutton.y,
1200                            xevent->xbutton.button));
1201
1202       if (window_private == NULL)
1203         {
1204           return_val = FALSE;
1205           break;
1206         }
1207
1208       /* We treat button presses as scroll wheel events, so ignore the release */
1209       if (xevent->xbutton.button == 4 || xevent->xbutton.button == 5 ||
1210           xevent->xbutton.button == 6 || xevent->xbutton.button ==7)
1211         {
1212           return_val = FALSE;
1213           break;
1214         }
1215
1216       event->button.type = GDK_BUTTON_RELEASE;
1217       event->button.window = window;
1218       event->button.time = xevent->xbutton.time;
1219       event->button.x = xevent->xbutton.x;
1220       event->button.y = xevent->xbutton.y;
1221       event->button.x_root = (gfloat)xevent->xbutton.x_root;
1222       event->button.y_root = (gfloat)xevent->xbutton.y_root;
1223       event->button.axes = NULL;
1224       event->button.state = (GdkModifierType) xevent->xbutton.state;
1225       event->button.button = xevent->xbutton.button;
1226       event->button.device = display->core_pointer;
1227
1228       if (!set_screen_from_root (display, event, xevent->xbutton.root))
1229         return_val = FALSE;
1230
1231       break;
1232
1233     case MotionNotify:
1234       GDK_NOTE (EVENTS,
1235                 g_message ("motion notify:\t\twindow: %ld  x,y: %d %d  hint: %s",
1236                            xevent->xmotion.window,
1237                            xevent->xmotion.x, xevent->xmotion.y,
1238                            (xevent->xmotion.is_hint) ? "true" : "false"));
1239
1240       if (window_private == NULL)
1241         {
1242           return_val = FALSE;
1243           break;
1244         }
1245
1246       event->motion.type = GDK_MOTION_NOTIFY;
1247       event->motion.window = window;
1248       event->motion.time = xevent->xmotion.time;
1249       event->motion.x = xevent->xmotion.x;
1250       event->motion.y = xevent->xmotion.y;
1251       event->motion.x_root = (gfloat)xevent->xmotion.x_root;
1252       event->motion.y_root = (gfloat)xevent->xmotion.y_root;
1253       event->motion.axes = NULL;
1254       event->motion.state = (GdkModifierType) xevent->xmotion.state;
1255       event->motion.is_hint = xevent->xmotion.is_hint;
1256       event->motion.device = display->core_pointer;
1257
1258       if (!set_screen_from_root (display, event, xevent->xbutton.root))
1259         {
1260           return_val = FALSE;
1261           break;
1262         }
1263
1264       break;
1265
1266     case EnterNotify:
1267       GDK_NOTE (EVENTS,
1268                 g_message ("enter notify:\t\twindow: %ld  detail: %d subwin: %ld",
1269                            xevent->xcrossing.window,
1270                            xevent->xcrossing.detail,
1271                            xevent->xcrossing.subwindow));
1272
1273       if (window_private == NULL)
1274         {
1275           return_val = FALSE;
1276           break;
1277         }
1278
1279       if (!set_screen_from_root (display, event, xevent->xbutton.root))
1280         {
1281           return_val = FALSE;
1282           break;
1283         }
1284
1285       /* Handle focusing (in the case where no window manager is running */
1286       if (toplevel && xevent->xcrossing.detail != NotifyInferior)
1287         {
1288           toplevel->has_pointer = TRUE;
1289
1290           if (xevent->xcrossing.focus && !toplevel->has_focus_window)
1291             {
1292               gboolean had_focus = HAS_FOCUS (toplevel);
1293
1294               toplevel->has_pointer_focus = TRUE;
1295
1296               if (HAS_FOCUS (toplevel) != had_focus)
1297                 generate_focus_event (window, TRUE);
1298             }
1299         }
1300
1301       event->crossing.type = GDK_ENTER_NOTIFY;
1302       event->crossing.window = window;
1303
1304       /* If the subwindow field of the XEvent is non-NULL, then
1305        *  lookup the corresponding GdkWindow.
1306        */
1307       if (xevent->xcrossing.subwindow != None)
1308         event->crossing.subwindow = gdk_window_lookup_for_display (display, xevent->xcrossing.subwindow);
1309       else
1310         event->crossing.subwindow = NULL;
1311
1312       event->crossing.time = xevent->xcrossing.time;
1313       event->crossing.x = xevent->xcrossing.x;
1314       event->crossing.y = xevent->xcrossing.y;
1315       event->crossing.x_root = xevent->xcrossing.x_root;
1316       event->crossing.y_root = xevent->xcrossing.y_root;
1317
1318       /* Translate the crossing mode into Gdk terms.
1319        */
1320       switch (xevent->xcrossing.mode)
1321         {
1322         case NotifyNormal:
1323           event->crossing.mode = GDK_CROSSING_NORMAL;
1324           break;
1325         case NotifyGrab:
1326           event->crossing.mode = GDK_CROSSING_GRAB;
1327           break;
1328         case NotifyUngrab:
1329           event->crossing.mode = GDK_CROSSING_UNGRAB;
1330           break;
1331         };
1332
1333       /* Translate the crossing detail into Gdk terms.
1334        */
1335       switch (xevent->xcrossing.detail)
1336         {
1337         case NotifyInferior:
1338           event->crossing.detail = GDK_NOTIFY_INFERIOR;
1339           break;
1340         case NotifyAncestor:
1341           event->crossing.detail = GDK_NOTIFY_ANCESTOR;
1342           break;
1343         case NotifyVirtual:
1344           event->crossing.detail = GDK_NOTIFY_VIRTUAL;
1345           break;
1346         case NotifyNonlinear:
1347           event->crossing.detail = GDK_NOTIFY_NONLINEAR;
1348           break;
1349         case NotifyNonlinearVirtual:
1350           event->crossing.detail = GDK_NOTIFY_NONLINEAR_VIRTUAL;
1351           break;
1352         default:
1353           event->crossing.detail = GDK_NOTIFY_UNKNOWN;
1354           break;
1355         }
1356
1357       event->crossing.focus = xevent->xcrossing.focus;
1358       event->crossing.state = xevent->xcrossing.state;
1359
1360       break;
1361
1362     case LeaveNotify:
1363       GDK_NOTE (EVENTS,
1364                 g_message ("leave notify:\t\twindow: %ld  detail: %d subwin: %ld",
1365                            xevent->xcrossing.window,
1366                            xevent->xcrossing.detail, xevent->xcrossing.subwindow));
1367
1368       if (window_private == NULL)
1369         {
1370           return_val = FALSE;
1371           break;
1372         }
1373
1374       if (!set_screen_from_root (display, event, xevent->xbutton.root))
1375         {
1376           return_val = FALSE;
1377           break;
1378         }
1379
1380       /* Handle focusing (in the case where no window manager is running */
1381       if (toplevel && xevent->xcrossing.detail != NotifyInferior)
1382         {
1383           toplevel->has_pointer = FALSE;
1384
1385           if (xevent->xcrossing.focus && !toplevel->has_focus_window)
1386             {
1387               gboolean had_focus = HAS_FOCUS (toplevel);
1388
1389               toplevel->has_pointer_focus = FALSE;
1390
1391               if (HAS_FOCUS (toplevel) != had_focus)
1392                 generate_focus_event (window, FALSE);
1393             }
1394         }
1395
1396       event->crossing.type = GDK_LEAVE_NOTIFY;
1397       event->crossing.window = window;
1398
1399       /* If the subwindow field of the XEvent is non-NULL, then
1400        *  lookup the corresponding GdkWindow.
1401        */
1402       if (xevent->xcrossing.subwindow != None)
1403         event->crossing.subwindow = gdk_window_lookup_for_display (display, xevent->xcrossing.subwindow);
1404       else
1405         event->crossing.subwindow = NULL;
1406
1407       event->crossing.time = xevent->xcrossing.time;
1408       event->crossing.x = xevent->xcrossing.x;
1409       event->crossing.y = xevent->xcrossing.y;
1410       event->crossing.x_root = xevent->xcrossing.x_root;
1411       event->crossing.y_root = xevent->xcrossing.y_root;
1412
1413       /* Translate the crossing mode into Gdk terms.
1414        */
1415       switch (xevent->xcrossing.mode)
1416         {
1417         case NotifyNormal:
1418           event->crossing.mode = GDK_CROSSING_NORMAL;
1419           break;
1420         case NotifyGrab:
1421           event->crossing.mode = GDK_CROSSING_GRAB;
1422           break;
1423         case NotifyUngrab:
1424           event->crossing.mode = GDK_CROSSING_UNGRAB;
1425           break;
1426         };
1427
1428       /* Translate the crossing detail into Gdk terms.
1429        */
1430       switch (xevent->xcrossing.detail)
1431         {
1432         case NotifyInferior:
1433           event->crossing.detail = GDK_NOTIFY_INFERIOR;
1434           break;
1435         case NotifyAncestor:
1436           event->crossing.detail = GDK_NOTIFY_ANCESTOR;
1437           break;
1438         case NotifyVirtual:
1439           event->crossing.detail = GDK_NOTIFY_VIRTUAL;
1440           break;
1441         case NotifyNonlinear:
1442           event->crossing.detail = GDK_NOTIFY_NONLINEAR;
1443           break;
1444         case NotifyNonlinearVirtual:
1445           event->crossing.detail = GDK_NOTIFY_NONLINEAR_VIRTUAL;
1446           break;
1447         default:
1448           event->crossing.detail = GDK_NOTIFY_UNKNOWN;
1449           break;
1450         }
1451
1452       event->crossing.focus = xevent->xcrossing.focus;
1453       event->crossing.state = xevent->xcrossing.state;
1454
1455       break;
1456
1457       /* We only care about focus events that indicate that _this_
1458        * window (not a ancestor or child) got or lost the focus
1459        */
1460     case FocusIn:
1461       GDK_NOTE (EVENTS,
1462                 g_message ("focus in:\t\twindow: %ld, detail: %s, mode: %s",
1463                            xevent->xfocus.window,
1464                            notify_details[xevent->xfocus.detail],
1465                            notify_modes[xevent->xfocus.mode]));
1466
1467       if (toplevel)
1468         {
1469           gboolean had_focus = HAS_FOCUS (toplevel);
1470
1471           switch (xevent->xfocus.detail)
1472             {
1473             case NotifyAncestor:
1474             case NotifyVirtual:
1475               /* When the focus moves from an ancestor of the window to
1476                * the window or a descendent of the window, *and* the
1477                * pointer is inside the window, then we were previously
1478                * receiving keystroke events in the has_pointer_focus
1479                * case and are now receiving them in the
1480                * has_focus_window case.
1481                */
1482               if (toplevel->has_pointer &&
1483                   xevent->xfocus.mode != NotifyGrab &&
1484                   xevent->xfocus.mode != NotifyUngrab)
1485                 toplevel->has_pointer_focus = FALSE;
1486
1487               /* fall through */
1488             case NotifyNonlinear:
1489             case NotifyNonlinearVirtual:
1490               if (xevent->xfocus.mode != NotifyGrab &&
1491                   xevent->xfocus.mode != NotifyUngrab)
1492                 toplevel->has_focus_window = TRUE;
1493               /* We pretend that the focus moves to the grab
1494                * window, so we pay attention to NotifyGrab
1495                * NotifyUngrab, and ignore NotifyWhileGrabbed
1496                */
1497               if (xevent->xfocus.mode != NotifyWhileGrabbed)
1498                 toplevel->has_focus = TRUE;
1499               break;
1500             case NotifyPointer:
1501               /* The X server sends NotifyPointer/NotifyGrab,
1502                * but the pointer focus is ignored while a
1503                * grab is in effect
1504                */
1505               if (xevent->xfocus.mode != NotifyGrab &&
1506                   xevent->xfocus.mode != NotifyUngrab)
1507                 toplevel->has_pointer_focus = TRUE;
1508               break;
1509             case NotifyInferior:
1510             case NotifyPointerRoot:
1511             case NotifyDetailNone:
1512               break;
1513             }
1514
1515           if (HAS_FOCUS (toplevel) != had_focus)
1516             generate_focus_event (window, TRUE);
1517         }
1518       break;
1519     case FocusOut:
1520       GDK_NOTE (EVENTS,
1521                 g_message ("focus out:\t\twindow: %ld, detail: %s, mode: %s",
1522                            xevent->xfocus.window,
1523                            notify_details[xevent->xfocus.detail],
1524                            notify_modes[xevent->xfocus.mode]));
1525
1526       if (toplevel)
1527         {
1528           gboolean had_focus = HAS_FOCUS (toplevel);
1529
1530           switch (xevent->xfocus.detail)
1531             {
1532             case NotifyAncestor:
1533             case NotifyVirtual:
1534               /* When the focus moves from the window or a descendent
1535                * of the window to an ancestor of the window, *and* the
1536                * pointer is inside the window, then we were previously
1537                * receiving keystroke events in the has_focus_window
1538                * case and are now receiving them in the
1539                * has_pointer_focus case.
1540                */
1541               if (toplevel->has_pointer &&
1542                   xevent->xfocus.mode != NotifyGrab &&
1543                   xevent->xfocus.mode != NotifyUngrab)
1544                 toplevel->has_pointer_focus = TRUE;
1545
1546               /* fall through */
1547             case NotifyNonlinear:
1548             case NotifyNonlinearVirtual:
1549               if (xevent->xfocus.mode != NotifyGrab &&
1550                   xevent->xfocus.mode != NotifyUngrab)
1551                 toplevel->has_focus_window = FALSE;
1552               if (xevent->xfocus.mode != NotifyWhileGrabbed)
1553                 toplevel->has_focus = FALSE;
1554               break;
1555             case NotifyPointer:
1556               if (xevent->xfocus.mode != NotifyGrab &&
1557                   xevent->xfocus.mode != NotifyUngrab)
1558                 toplevel->has_pointer_focus = FALSE;
1559             break;
1560             case NotifyInferior:
1561             case NotifyPointerRoot:
1562             case NotifyDetailNone:
1563               break;
1564             }
1565
1566           if (HAS_FOCUS (toplevel) != had_focus)
1567             generate_focus_event (window, FALSE);
1568         }
1569       break;
1570
1571 #if 0
1572           /* gdk_keyboard_grab() causes following events. These events confuse
1573            * the XIM focus, so ignore them.
1574            */
1575           if (xevent->xfocus.mode == NotifyGrab ||
1576               xevent->xfocus.mode == NotifyUngrab)
1577             break;
1578 #endif
1579
1580     case KeymapNotify:
1581       GDK_NOTE (EVENTS,
1582                 g_message ("keymap notify"));
1583
1584       /* Not currently handled */
1585       return_val = FALSE;
1586       break;
1587
1588     case Expose:
1589       GDK_NOTE (EVENTS,
1590                 g_message ("expose:\t\twindow: %ld  %d  x,y: %d %d  w,h: %d %d%s",
1591                            xevent->xexpose.window, xevent->xexpose.count,
1592                            xevent->xexpose.x, xevent->xexpose.y,
1593                            xevent->xexpose.width, xevent->xexpose.height,
1594                            event->any.send_event ? " (send)" : ""));
1595
1596       if (window_private == NULL)
1597         {
1598           return_val = FALSE;
1599           break;
1600         }
1601
1602       {
1603         GdkRectangle expose_rect;
1604
1605         expose_rect.x = xevent->xexpose.x;
1606         expose_rect.y = xevent->xexpose.y;
1607         expose_rect.width = xevent->xexpose.width;
1608         expose_rect.height = xevent->xexpose.height;
1609
1610         if (return_exposes)
1611           {
1612             event->expose.type = GDK_EXPOSE;
1613             event->expose.area = expose_rect;
1614             event->expose.region = gdk_region_rectangle (&expose_rect);
1615             event->expose.window = window;
1616             event->expose.count = xevent->xexpose.count;
1617
1618             return_val = TRUE;
1619           }
1620         else
1621           {
1622             _gdk_window_process_expose (window, xevent->xexpose.serial, &expose_rect);
1623             return_val = FALSE;
1624           }
1625
1626         return_val = FALSE;
1627       }
1628
1629       break;
1630
1631     case GraphicsExpose:
1632       {
1633         GdkRectangle expose_rect;
1634
1635         GDK_NOTE (EVENTS,
1636                   g_message ("graphics expose:\tdrawable: %ld",
1637                              xevent->xgraphicsexpose.drawable));
1638
1639         if (window_private == NULL)
1640           {
1641             return_val = FALSE;
1642             break;
1643           }
1644
1645         expose_rect.x = xevent->xgraphicsexpose.x;
1646         expose_rect.y = xevent->xgraphicsexpose.y;
1647         expose_rect.width = xevent->xgraphicsexpose.width;
1648         expose_rect.height = xevent->xgraphicsexpose.height;
1649
1650         if (return_exposes)
1651           {
1652             event->expose.type = GDK_EXPOSE;
1653             event->expose.area = expose_rect;
1654             event->expose.region = gdk_region_rectangle (&expose_rect);
1655             event->expose.window = window;
1656             event->expose.count = xevent->xgraphicsexpose.count;
1657
1658             return_val = TRUE;
1659           }
1660         else
1661           {
1662             _gdk_window_process_expose (window, xevent->xgraphicsexpose.serial, &expose_rect);
1663
1664             return_val = FALSE;
1665           }
1666
1667       }
1668       break;
1669
1670     case NoExpose:
1671       GDK_NOTE (EVENTS,
1672                 g_message ("no expose:\t\tdrawable: %ld",
1673                            xevent->xnoexpose.drawable));
1674
1675       event->no_expose.type = GDK_NO_EXPOSE;
1676       event->no_expose.window = window;
1677
1678       break;
1679
1680     case VisibilityNotify:
1681 #ifdef G_ENABLE_DEBUG
1682       if (_gdk_debug_flags & GDK_DEBUG_EVENTS)
1683         switch (xevent->xvisibility.state)
1684           {
1685           case VisibilityFullyObscured:
1686             g_message ("visibility notify:\twindow: %ld  none",
1687                        xevent->xvisibility.window);
1688             break;
1689           case VisibilityPartiallyObscured:
1690             g_message ("visibility notify:\twindow: %ld  partial",
1691                        xevent->xvisibility.window);
1692             break;
1693           case VisibilityUnobscured:
1694             g_message ("visibility notify:\twindow: %ld  full",
1695                        xevent->xvisibility.window);
1696             break;
1697           }
1698 #endif /* G_ENABLE_DEBUG */
1699
1700       if (window_private == NULL)
1701         {
1702           return_val = FALSE;
1703           break;
1704         }
1705
1706       event->visibility.type = GDK_VISIBILITY_NOTIFY;
1707       event->visibility.window = window;
1708
1709       switch (xevent->xvisibility.state)
1710         {
1711         case VisibilityFullyObscured:
1712           event->visibility.state = GDK_VISIBILITY_FULLY_OBSCURED;
1713           break;
1714
1715         case VisibilityPartiallyObscured:
1716           event->visibility.state = GDK_VISIBILITY_PARTIAL;
1717           break;
1718
1719         case VisibilityUnobscured:
1720           event->visibility.state = GDK_VISIBILITY_UNOBSCURED;
1721           break;
1722         }
1723
1724       break;
1725
1726     case CreateNotify:
1727       GDK_NOTE (EVENTS,
1728                 g_message ("create notify:\twindow: %ld  x,y: %d %d     w,h: %d %d  b-w: %d  parent: %ld         ovr: %d",
1729                            xevent->xcreatewindow.window,
1730                            xevent->xcreatewindow.x,
1731                            xevent->xcreatewindow.y,
1732                            xevent->xcreatewindow.width,
1733                            xevent->xcreatewindow.height,
1734                            xevent->xcreatewindow.border_width,
1735                            xevent->xcreatewindow.parent,
1736                            xevent->xcreatewindow.override_redirect));
1737       /* not really handled */
1738       break;
1739
1740     case DestroyNotify:
1741       GDK_NOTE (EVENTS,
1742                 g_message ("destroy notify:\twindow: %ld",
1743                            xevent->xdestroywindow.window));
1744
1745       /* Ignore DestroyNotify from SubstructureNotifyMask */
1746       if (xevent->xdestroywindow.window == xevent->xdestroywindow.event)
1747         {
1748           event->any.type = GDK_DESTROY;
1749           event->any.window = window;
1750
1751           return_val = window_private && !GDK_WINDOW_DESTROYED (window);
1752
1753           if (window && GDK_WINDOW_XID (window) != screen_x11->xroot_window)
1754             gdk_window_destroy_notify (window);
1755         }
1756       else
1757         return_val = FALSE;
1758
1759       break;
1760
1761     case UnmapNotify:
1762       GDK_NOTE (EVENTS,
1763                 g_message ("unmap notify:\t\twindow: %ld",
1764                            xevent->xmap.window));
1765
1766       event->any.type = GDK_UNMAP;
1767       event->any.window = window;
1768
1769       /* If we are shown (not withdrawn) and get an unmap, it means we
1770        * were iconified in the X sense. If we are withdrawn, and get
1771        * an unmap, it means we hid the window ourselves, so we
1772        * will have already flipped the iconified bit off.
1773        */
1774       if (window)
1775         {
1776           if (GDK_WINDOW_IS_MAPPED (window))
1777             gdk_synthesize_window_state (window,
1778                                          0,
1779                                          GDK_WINDOW_STATE_ICONIFIED);
1780
1781           _gdk_xgrab_check_unmap (window, xevent->xany.serial);
1782         }
1783
1784       break;
1785
1786     case MapNotify:
1787       GDK_NOTE (EVENTS,
1788                 g_message ("map notify:\t\twindow: %ld",
1789                            xevent->xmap.window));
1790
1791       event->any.type = GDK_MAP;
1792       event->any.window = window;
1793
1794       /* Unset iconified if it was set */
1795       if (window && (((GdkWindowObject*)window)->state & GDK_WINDOW_STATE_ICONIFIED))
1796         gdk_synthesize_window_state (window,
1797                                      GDK_WINDOW_STATE_ICONIFIED,
1798                                      0);
1799
1800       break;
1801
1802     case ReparentNotify:
1803       GDK_NOTE (EVENTS,
1804                 g_message ("reparent notify:\twindow: %ld  x,y: %d %d  parent: %ld      ovr: %d",
1805                            xevent->xreparent.window,
1806                            xevent->xreparent.x,
1807                            xevent->xreparent.y,
1808                            xevent->xreparent.parent,
1809                            xevent->xreparent.override_redirect));
1810
1811       /* Not currently handled */
1812       return_val = FALSE;
1813       break;
1814
1815     case ConfigureNotify:
1816       GDK_NOTE (EVENTS,
1817                 g_message ("configure notify:\twindow: %ld  x,y: %d %d  w,h: %d %d  b-w: %d  above: %ld  ovr: %d%s",
1818                            xevent->xconfigure.window,
1819                            xevent->xconfigure.x,
1820                            xevent->xconfigure.y,
1821                            xevent->xconfigure.width,
1822                            xevent->xconfigure.height,
1823                            xevent->xconfigure.border_width,
1824                            xevent->xconfigure.above,
1825                            xevent->xconfigure.override_redirect,
1826                            !window
1827                            ? " (discarding)"
1828                            : GDK_WINDOW_TYPE (window) == GDK_WINDOW_CHILD
1829                            ? " (discarding child)"
1830                            : xevent->xconfigure.event != xevent->xconfigure.window
1831                            ? " (discarding substructure)"
1832                            : ""));
1833       if (window && GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT)
1834         {
1835           window_private->width = xevent->xconfigure.width;
1836           window_private->height = xevent->xconfigure.height;
1837
1838           _gdk_window_update_size (window);
1839           _gdk_x11_drawable_update_size (window_private->impl);
1840           _gdk_x11_screen_size_changed (screen, xevent);
1841         }
1842
1843       if (window &&
1844           xevent->xconfigure.event == xevent->xconfigure.window &&
1845           !GDK_WINDOW_DESTROYED (window) &&
1846           window_private->input_window != NULL)
1847         _gdk_input_configure_event (&xevent->xconfigure, window);
1848
1849 #ifdef HAVE_XSYNC
1850       if (toplevel && display_x11->use_sync && !XSyncValueIsZero (toplevel->pending_counter_value))
1851         {
1852           toplevel->current_counter_value = toplevel->pending_counter_value;
1853           XSyncIntToValue (&toplevel->pending_counter_value, 0);
1854         }
1855 #endif
1856
1857       if (!window ||
1858           xevent->xconfigure.event != xevent->xconfigure.window ||
1859           GDK_WINDOW_TYPE (window) == GDK_WINDOW_CHILD ||
1860           GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT)
1861         return_val = FALSE;
1862       else
1863         {
1864           event->configure.type = GDK_CONFIGURE;
1865           event->configure.window = window;
1866           event->configure.width = xevent->xconfigure.width;
1867           event->configure.height = xevent->xconfigure.height;
1868
1869           if (!xevent->xconfigure.send_event &&
1870               !xevent->xconfigure.override_redirect &&
1871               !GDK_WINDOW_DESTROYED (window))
1872             {
1873               gint tx = 0;
1874               gint ty = 0;
1875               Window child_window = 0;
1876
1877               gdk_error_trap_push ();
1878               if (XTranslateCoordinates (GDK_DRAWABLE_XDISPLAY (window),
1879                                          GDK_DRAWABLE_XID (window),
1880                                          screen_x11->xroot_window,
1881                                          0, 0,
1882                                          &tx, &ty,
1883                                          &child_window))
1884                 {
1885                   event->configure.x = tx;
1886                   event->configure.y = ty;
1887                 }
1888               gdk_error_trap_pop ();
1889             }
1890           else
1891             {
1892               event->configure.x = xevent->xconfigure.x;
1893               event->configure.y = xevent->xconfigure.y;
1894             }
1895           window_private->x = event->configure.x;
1896           window_private->y = event->configure.y;
1897           window_private->width = xevent->xconfigure.width;
1898           window_private->height = xevent->xconfigure.height;
1899
1900           _gdk_window_update_size (window);
1901           _gdk_x11_drawable_update_size (window_private->impl);
1902
1903           if (window_private->resize_count >= 1)
1904             {
1905               window_private->resize_count -= 1;
1906
1907               if (window_private->resize_count == 0)
1908                 _gdk_moveresize_configure_done (display, window);
1909             }
1910         }
1911       break;
1912
1913     case PropertyNotify:
1914       GDK_NOTE (EVENTS,
1915                 g_message ("property notify:\twindow: %ld, atom(%ld): %s%s%s",
1916                            xevent->xproperty.window,
1917                            xevent->xproperty.atom,
1918                            "\"",
1919                            gdk_x11_get_xatom_name_for_display (display, xevent->xproperty.atom),
1920                            "\""));
1921
1922       if (window_private == NULL)
1923         {
1924           return_val = FALSE;
1925           break;
1926         }
1927
1928       /* We compare with the serial of the last time we mapped the
1929        * window to avoid refetching properties that we set ourselves
1930        */
1931       if (toplevel &&
1932           xevent->xproperty.serial >= toplevel->map_serial)
1933         {
1934           if (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE"))
1935             gdk_check_wm_state_changed (window);
1936
1937           if (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP"))
1938             gdk_check_wm_desktop_changed (window);
1939         }
1940
1941       if (window_private->event_mask & GDK_PROPERTY_CHANGE_MASK)
1942         {
1943           event->property.type = GDK_PROPERTY_NOTIFY;
1944           event->property.window = window;
1945           event->property.atom = gdk_x11_xatom_to_atom_for_display (display, xevent->xproperty.atom);
1946           event->property.time = xevent->xproperty.time;
1947           event->property.state = xevent->xproperty.state;
1948         }
1949       else
1950         return_val = FALSE;
1951
1952       break;
1953
1954     case SelectionClear:
1955       GDK_NOTE (EVENTS,
1956                 g_message ("selection clear:\twindow: %ld",
1957                            xevent->xproperty.window));
1958
1959       if (_gdk_selection_filter_clear_event (&xevent->xselectionclear))
1960         {
1961           event->selection.type = GDK_SELECTION_CLEAR;
1962           event->selection.window = window;
1963           event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionclear.selection);
1964           event->selection.time = xevent->xselectionclear.time;
1965         }
1966       else
1967         return_val = FALSE;
1968
1969       break;
1970
1971     case SelectionRequest:
1972       GDK_NOTE (EVENTS,
1973                 g_message ("selection request:\twindow: %ld",
1974                            xevent->xproperty.window));
1975
1976       event->selection.type = GDK_SELECTION_REQUEST;
1977       event->selection.window = window;
1978       event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.selection);
1979       event->selection.target = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.target);
1980       event->selection.property = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.property);
1981       event->selection.requestor = xevent->xselectionrequest.requestor;
1982       event->selection.time = xevent->xselectionrequest.time;
1983
1984       break;
1985
1986     case SelectionNotify:
1987       GDK_NOTE (EVENTS,
1988                 g_message ("selection notify:\twindow: %ld",
1989                            xevent->xproperty.window));
1990
1991
1992       event->selection.type = GDK_SELECTION_NOTIFY;
1993       event->selection.window = window;
1994       event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.selection);
1995       event->selection.target = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.target);
1996       if (xevent->xselection.property == None)
1997         event->selection.property = GDK_NONE;
1998       else
1999         event->selection.property = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.property);
2000       event->selection.time = xevent->xselection.time;
2001
2002       break;
2003
2004     case ColormapNotify:
2005       GDK_NOTE (EVENTS,
2006                 g_message ("colormap notify:\twindow: %ld",
2007                            xevent->xcolormap.window));
2008
2009       /* Not currently handled */
2010       return_val = FALSE;
2011       break;
2012
2013     case ClientMessage:
2014       {
2015         GList *tmp_list;
2016         GdkFilterReturn result = GDK_FILTER_CONTINUE;
2017         GdkAtom message_type = gdk_x11_xatom_to_atom_for_display (display, xevent->xclient.message_type);
2018
2019         GDK_NOTE (EVENTS,
2020                   g_message ("client message:\twindow: %ld",
2021                              xevent->xclient.window));
2022
2023         tmp_list = display_x11->client_filters;
2024         while (tmp_list)
2025           {
2026             GdkClientFilter *filter = tmp_list->data;
2027             tmp_list = tmp_list->next;
2028
2029             if (filter->type == message_type)
2030               {
2031                 result = (*filter->function) (xevent, event, filter->data);
2032                 if (result != GDK_FILTER_CONTINUE)
2033                   break;
2034               }
2035           }
2036
2037         switch (result)
2038           {
2039           case GDK_FILTER_REMOVE:
2040             return_val = FALSE;
2041             break;
2042           case GDK_FILTER_TRANSLATE:
2043             return_val = TRUE;
2044             break;
2045           case GDK_FILTER_CONTINUE:
2046             /* Send unknown ClientMessage's on to Gtk for it to use */
2047             if (window_private == NULL)
2048               {
2049                 return_val = FALSE;
2050               }
2051             else
2052               {
2053                 event->client.type = GDK_CLIENT_EVENT;
2054                 event->client.window = window;
2055                 event->client.message_type = message_type;
2056                 event->client.data_format = xevent->xclient.format;
2057                 memcpy(&event->client.data, &xevent->xclient.data,
2058                        sizeof(event->client.data));
2059               }
2060             break;
2061           }
2062       }
2063
2064       break;
2065
2066     case MappingNotify:
2067       GDK_NOTE (EVENTS,
2068                 g_message ("mapping notify"));
2069
2070       /* Let XLib know that there is a new keyboard mapping.
2071        */
2072       XRefreshKeyboardMapping (&xevent->xmapping);
2073       _gdk_keymap_keys_changed (display);
2074       return_val = FALSE;
2075       break;
2076
2077     default:
2078 #ifdef HAVE_XKB
2079       if (xevent->type == display_x11->xkb_event_type)
2080         {
2081           XkbEvent *xkb_event = (XkbEvent *)xevent;
2082
2083           switch (xkb_event->any.xkb_type)
2084             {
2085             case XkbNewKeyboardNotify:
2086             case XkbMapNotify:
2087               _gdk_keymap_keys_changed (display);
2088
2089               return_val = FALSE;
2090               break;
2091
2092             case XkbStateNotify:
2093               _gdk_keymap_state_changed (display, xevent);
2094               break;
2095             }
2096         }
2097       else
2098 #endif
2099 #ifdef HAVE_XFIXES
2100       if (xevent->type - display_x11->xfixes_event_base == XFixesSelectionNotify)
2101         {
2102           XFixesSelectionNotifyEvent *selection_notify = (XFixesSelectionNotifyEvent *)xevent;
2103
2104           _gdk_x11_screen_process_owner_change (screen, xevent);
2105
2106           event->owner_change.type = GDK_OWNER_CHANGE;
2107           event->owner_change.window = window;
2108           event->owner_change.owner = selection_notify->owner;
2109           event->owner_change.reason = selection_notify->subtype;
2110           event->owner_change.selection =
2111             gdk_x11_xatom_to_atom_for_display (display,
2112                                                selection_notify->selection);
2113           event->owner_change.time = selection_notify->timestamp;
2114           event->owner_change.selection_time = selection_notify->selection_timestamp;
2115
2116           return_val = TRUE;
2117         }
2118       else
2119 #endif
2120 #ifdef HAVE_RANDR
2121       if (xevent->type - display_x11->xrandr_event_base == RRScreenChangeNotify ||
2122           xevent->type - display_x11->xrandr_event_base == RRNotify)
2123         {
2124           if (screen)
2125             _gdk_x11_screen_size_changed (screen, xevent);
2126         }
2127       else
2128 #endif
2129 #if defined(HAVE_XCOMPOSITE) && defined (HAVE_XDAMAGE) && defined (HAVE_XFIXES)
2130       if (display_x11->have_xdamage && window_private && window_private->composited &&
2131           xevent->type == display_x11->xdamage_event_base + XDamageNotify &&
2132           ((XDamageNotifyEvent *) xevent)->damage == window_impl->damage)
2133         {
2134           XDamageNotifyEvent *damage_event = (XDamageNotifyEvent *) xevent;
2135           XserverRegion repair;
2136           GdkRectangle rect;
2137
2138           rect.x = window_private->x + damage_event->area.x;
2139           rect.y = window_private->y + damage_event->area.y;
2140           rect.width = damage_event->area.width;
2141           rect.height = damage_event->area.height;
2142
2143           repair = XFixesCreateRegion (display_x11->xdisplay,
2144                                        &damage_event->area, 1);
2145           XDamageSubtract (display_x11->xdisplay,
2146                            window_impl->damage,
2147                            repair, None);
2148           XFixesDestroyRegion (display_x11->xdisplay, repair);
2149
2150           if (window_private->parent != NULL)
2151             _gdk_window_process_expose (GDK_WINDOW (window_private->parent),
2152                                         damage_event->serial, &rect);
2153
2154           return_val = TRUE;
2155         }
2156       else
2157 #endif
2158         {
2159           /* something else - (e.g., a Xinput event) */
2160
2161           if (window_private &&
2162               !GDK_WINDOW_DESTROYED (window_private) &&
2163               window_private->input_window)
2164             return_val = _gdk_input_other_event (event, xevent, window);
2165           else
2166             return_val = FALSE;
2167
2168           break;
2169         }
2170     }
2171
2172  done:
2173   if (return_val)
2174     {
2175       if (event->any.window)
2176         g_object_ref (event->any.window);
2177       if (((event->any.type == GDK_ENTER_NOTIFY) ||
2178            (event->any.type == GDK_LEAVE_NOTIFY)) &&
2179           (event->crossing.subwindow != NULL))
2180         g_object_ref (event->crossing.subwindow);
2181     }
2182   else
2183     {
2184       /* Mark this event as having no resources to be freed */
2185       event->any.window = NULL;
2186       event->any.type = GDK_NOTHING;
2187     }
2188
2189   if (window)
2190     g_object_unref (window);
2191
2192   return return_val;
2193 }
2194
2195 static GdkFilterReturn
2196 gdk_wm_protocols_filter (GdkXEvent *xev,
2197                          GdkEvent  *event,
2198                          gpointer data)
2199 {
2200   XEvent *xevent = (XEvent *)xev;
2201   GdkWindow *win = event->any.window;
2202   GdkDisplay *display;
2203   Atom atom;
2204
2205   if (!win)
2206       return GDK_FILTER_REMOVE;
2207
2208   display = GDK_WINDOW_DISPLAY (win);
2209   atom = (Atom)xevent->xclient.data.l[0];
2210
2211   if (atom == gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW"))
2212     {
2213   /* The delete window request specifies a window
2214    *  to delete. We don't actually destroy the
2215    *  window because "it is only a request". (The
2216    *  window might contain vital data that the
2217    *  program does not want destroyed). Instead
2218    *  the event is passed along to the program,
2219    *  which should then destroy the window.
2220    */
2221       GDK_NOTE (EVENTS,
2222                 g_message ("delete window:\t\twindow: %ld",
2223                            xevent->xclient.window));
2224
2225       event->any.type = GDK_DELETE;
2226
2227       gdk_x11_window_set_user_time (win, xevent->xclient.data.l[1]);
2228
2229       return GDK_FILTER_TRANSLATE;
2230     }
2231   else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "WM_TAKE_FOCUS"))
2232     {
2233       GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (event->any.window);
2234       GdkWindowObject *private = (GdkWindowObject *)win;
2235
2236       /* There is no way of knowing reliably whether we are viewable;
2237        * _gdk_x11_set_input_focus_safe() traps errors asynchronously.
2238        */
2239       if (toplevel && private->accept_focus)
2240         _gdk_x11_set_input_focus_safe (display, toplevel->focus_window,
2241                                        RevertToParent,
2242                                        xevent->xclient.data.l[1]);
2243
2244       return GDK_FILTER_REMOVE;
2245     }
2246   else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PING") &&
2247            !_gdk_x11_display_is_root_window (display,
2248                                              xevent->xclient.window))
2249     {
2250       XClientMessageEvent xclient = xevent->xclient;
2251
2252       xclient.window = GDK_WINDOW_XROOTWIN (win);
2253       XSendEvent (GDK_WINDOW_XDISPLAY (win),
2254                   xclient.window,
2255                   False,
2256                   SubstructureRedirectMask | SubstructureNotifyMask, (XEvent *)&xclient);
2257
2258       return GDK_FILTER_REMOVE;
2259     }
2260   else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_SYNC_REQUEST") &&
2261            GDK_DISPLAY_X11 (display)->use_sync)
2262     {
2263       GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (event->any.window);
2264       if (toplevel)
2265         {
2266 #ifdef HAVE_XSYNC
2267           XSyncIntsToValue (&toplevel->pending_counter_value,
2268                             xevent->xclient.data.l[2],
2269                             xevent->xclient.data.l[3]);
2270 #endif
2271         }
2272       return GDK_FILTER_REMOVE;
2273     }
2274
2275   return GDK_FILTER_CONTINUE;
2276 }
2277
2278 void
2279 _gdk_events_queue (GdkDisplay *display)
2280 {
2281   GList *node;
2282   GdkEvent *event;
2283   XEvent xevent;
2284   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
2285
2286   while (!_gdk_event_queue_find_first(display) && XPending (xdisplay))
2287     {
2288       XNextEvent (xdisplay, &xevent);
2289
2290       switch (xevent.type)
2291         {
2292         case KeyPress:
2293         case KeyRelease:
2294           break;
2295         default:
2296           if (XFilterEvent (&xevent, None))
2297             continue;
2298         }
2299
2300       event = gdk_event_new (GDK_NOTHING);
2301
2302       event->any.window = NULL;
2303       event->any.send_event = xevent.xany.send_event ? TRUE : FALSE;
2304
2305       ((GdkEventPrivate *)event)->flags |= GDK_EVENT_PENDING;
2306
2307       node = _gdk_event_queue_append (display, event);
2308
2309       if (gdk_event_translate (display, event, &xevent, FALSE))
2310         {
2311           ((GdkEventPrivate *)event)->flags &= ~GDK_EVENT_PENDING;
2312           _gdk_windowing_got_event (display, node, event, xevent.xany.serial);
2313         }
2314       else
2315         {
2316           _gdk_event_queue_remove_link (display, node);
2317           g_list_free_1 (node);
2318           gdk_event_free (event);
2319         }
2320     }
2321 }
2322
2323 static gboolean
2324 gdk_event_prepare (GSource  *source,
2325                    gint     *timeout)
2326 {
2327   GdkDisplay *display = ((GdkDisplaySource*)source)->display;
2328   gboolean retval;
2329
2330   GDK_THREADS_ENTER ();
2331
2332   *timeout = -1;
2333   retval = (_gdk_event_queue_find_first (display) != NULL ||
2334             gdk_check_xpending (display));
2335
2336   GDK_THREADS_LEAVE ();
2337
2338   return retval;
2339 }
2340
2341 static gboolean
2342 gdk_event_check (GSource *source)
2343 {
2344   GdkDisplaySource *display_source = (GdkDisplaySource*)source;
2345   gboolean retval;
2346
2347   GDK_THREADS_ENTER ();
2348
2349   if (display_source->event_poll_fd.revents & G_IO_IN)
2350     retval = (_gdk_event_queue_find_first (display_source->display) != NULL ||
2351               gdk_check_xpending (display_source->display));
2352   else
2353     retval = FALSE;
2354
2355   GDK_THREADS_LEAVE ();
2356
2357   return retval;
2358 }
2359
2360 static gboolean
2361 gdk_event_dispatch (GSource    *source,
2362                     GSourceFunc callback,
2363                     gpointer    user_data)
2364 {
2365   GdkDisplay *display = ((GdkDisplaySource*)source)->display;
2366   GdkEvent *event;
2367
2368   GDK_THREADS_ENTER ();
2369
2370   _gdk_events_queue (display);
2371   event = _gdk_event_unqueue (display);
2372
2373   if (event)
2374     {
2375       if (_gdk_event_func)
2376         (*_gdk_event_func) (event, _gdk_event_data);
2377
2378       gdk_event_free (event);
2379     }
2380
2381   GDK_THREADS_LEAVE ();
2382
2383   return TRUE;
2384 }
2385
2386 /**
2387  * gdk_event_send_client_message_for_display:
2388  * @display: the #GdkDisplay for the window where the message is to be sent.
2389  * @event: the #GdkEvent to send, which should be a #GdkEventClient.
2390  * @winid: the window to send the client message to.
2391  *
2392  * On X11, sends an X ClientMessage event to a given window. On
2393  * Windows, sends a message registered with the name
2394  * GDK_WIN32_CLIENT_MESSAGE.
2395  *
2396  * This could be used for communicating between different
2397  * applications, though the amount of data is limited to 20 bytes on
2398  * X11, and to just four bytes on Windows.
2399  *
2400  * Returns: non-zero on success.
2401  *
2402  * Since: 2.2
2403  */
2404 gboolean
2405 gdk_event_send_client_message_for_display (GdkDisplay     *display,
2406                                            GdkEvent       *event,
2407                                            GdkNativeWindow winid)
2408 {
2409   XEvent sev;
2410
2411   g_return_val_if_fail(event != NULL, FALSE);
2412
2413   /* Set up our event to send, with the exception of its target window */
2414   sev.xclient.type = ClientMessage;
2415   sev.xclient.display = GDK_DISPLAY_XDISPLAY (display);
2416   sev.xclient.format = event->client.data_format;
2417   sev.xclient.window = winid;
2418   memcpy(&sev.xclient.data, &event->client.data, sizeof (sev.xclient.data));
2419   sev.xclient.message_type = gdk_x11_atom_to_xatom_for_display (display, event->client.message_type);
2420
2421   return _gdk_send_xevent (display, winid, False, NoEventMask, &sev);
2422 }
2423
2424
2425
2426 /* Sends a ClientMessage to all toplevel client windows */
2427 static gboolean
2428 gdk_event_send_client_message_to_all_recurse (GdkDisplay *display,
2429                                               XEvent     *xev,
2430                                               guint32     xid,
2431                                               guint       level)
2432 {
2433   Atom type = None;
2434   int format;
2435   unsigned long nitems, after;
2436   unsigned char *data;
2437   Window *ret_children, ret_root, ret_parent;
2438   unsigned int ret_nchildren;
2439   gboolean send = FALSE;
2440   gboolean found = FALSE;
2441   gboolean result = FALSE;
2442   int i;
2443
2444   gdk_error_trap_push ();
2445
2446   if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), xid,
2447                           gdk_x11_get_xatom_by_name_for_display (display, "WM_STATE"),
2448                           0, 0, False, AnyPropertyType,
2449                           &type, &format, &nitems, &after, &data) != Success)
2450     goto out;
2451
2452   if (type)
2453     {
2454       send = TRUE;
2455       XFree (data);
2456     }
2457   else
2458     {
2459       /* OK, we're all set, now let's find some windows to send this to */
2460       if (!XQueryTree (GDK_DISPLAY_XDISPLAY (display), xid,
2461                       &ret_root, &ret_parent,
2462                       &ret_children, &ret_nchildren))
2463         goto out;
2464
2465       for(i = 0; i < ret_nchildren; i++)
2466         if (gdk_event_send_client_message_to_all_recurse (display, xev, ret_children[i], level + 1))
2467           found = TRUE;
2468
2469       XFree (ret_children);
2470     }
2471
2472   if (send || (!found && (level == 1)))
2473     {
2474       xev->xclient.window = xid;
2475       _gdk_send_xevent (display, xid, False, NoEventMask, xev);
2476     }
2477
2478   result = send || found;
2479
2480  out:
2481   gdk_error_trap_pop ();
2482
2483   return result;
2484 }
2485
2486 /**
2487  * gdk_screen_broadcast_client_message:
2488  * @screen: the #GdkScreen where the event will be broadcasted.
2489  * @event: the #GdkEvent.
2490  *
2491  * On X11, sends an X ClientMessage event to all toplevel windows on
2492  * @screen.
2493  *
2494  * Toplevel windows are determined by checking for the WM_STATE property,
2495  * as described in the Inter-Client Communication Conventions Manual (ICCCM).
2496  * If no windows are found with the WM_STATE property set, the message is
2497  * sent to all children of the root window.
2498  *
2499  * On Windows, broadcasts a message registered with the name
2500  * GDK_WIN32_CLIENT_MESSAGE to all top-level windows. The amount of
2501  * data is limited to one long, i.e. four bytes.
2502  *
2503  * Since: 2.2
2504  */
2505
2506 void
2507 gdk_screen_broadcast_client_message (GdkScreen *screen,
2508                                      GdkEvent  *event)
2509 {
2510   XEvent sev;
2511   GdkWindow *root_window;
2512
2513   g_return_if_fail (event != NULL);
2514
2515   root_window = gdk_screen_get_root_window (screen);
2516
2517   /* Set up our event to send, with the exception of its target window */
2518   sev.xclient.type = ClientMessage;
2519   sev.xclient.display = GDK_WINDOW_XDISPLAY (root_window);
2520   sev.xclient.format = event->client.data_format;
2521   memcpy(&sev.xclient.data, &event->client.data, sizeof (sev.xclient.data));
2522   sev.xclient.message_type =
2523     gdk_x11_atom_to_xatom_for_display (GDK_WINDOW_DISPLAY (root_window),
2524                                        event->client.message_type);
2525
2526   gdk_event_send_client_message_to_all_recurse (gdk_screen_get_display (screen),
2527                                                 &sev,
2528                                                 GDK_WINDOW_XID (root_window),
2529                                                 0);
2530 }
2531
2532 /*
2533  *--------------------------------------------------------------
2534  * gdk_flush
2535  *
2536  *   Flushes the Xlib output buffer and then waits
2537  *   until all requests have been received and processed
2538  *   by the X server. The only real use for this function
2539  *   is in dealing with XShm.
2540  *
2541  * Arguments:
2542  *
2543  * Results:
2544  *
2545  * Side effects:
2546  *
2547  *--------------------------------------------------------------
2548  */
2549
2550 void
2551 gdk_flush (void)
2552 {
2553   GSList *tmp_list = _gdk_displays;
2554
2555   while (tmp_list)
2556     {
2557       XSync (GDK_DISPLAY_XDISPLAY (tmp_list->data), False);
2558       tmp_list = tmp_list->next;
2559     }
2560 }
2561
2562 static Bool
2563 timestamp_predicate (Display *display,
2564                      XEvent  *xevent,
2565                      XPointer arg)
2566 {
2567   Window xwindow = GPOINTER_TO_UINT (arg);
2568   GdkDisplay *gdk_display = gdk_x11_lookup_xdisplay (display);
2569
2570   if (xevent->type == PropertyNotify &&
2571       xevent->xproperty.window == xwindow &&
2572       xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (gdk_display,
2573                                                                        "GDK_TIMESTAMP_PROP"))
2574     return True;
2575
2576   return False;
2577 }
2578
2579 /**
2580  * gdk_x11_get_server_time:
2581  * @window: a #GdkWindow, used for communication with the server.
2582  *          The window must have GDK_PROPERTY_CHANGE_MASK in its
2583  *          events mask or a hang will result.
2584  *
2585  * Routine to get the current X server time stamp.
2586  *
2587  * Return value: the time stamp.
2588  **/
2589 guint32
2590 gdk_x11_get_server_time (GdkWindow *window)
2591 {
2592   Display *xdisplay;
2593   Window   xwindow;
2594   guchar c = 'a';
2595   XEvent xevent;
2596   Atom timestamp_prop_atom;
2597
2598   g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
2599   g_return_val_if_fail (!GDK_WINDOW_DESTROYED (window), 0);
2600
2601   xdisplay = GDK_WINDOW_XDISPLAY (window);
2602   xwindow = GDK_WINDOW_XWINDOW (window);
2603   timestamp_prop_atom =
2604     gdk_x11_get_xatom_by_name_for_display (GDK_WINDOW_DISPLAY (window),
2605                                            "GDK_TIMESTAMP_PROP");
2606
2607   XChangeProperty (xdisplay, xwindow, timestamp_prop_atom,
2608                    timestamp_prop_atom,
2609                    8, PropModeReplace, &c, 1);
2610
2611   XIfEvent (xdisplay, &xevent,
2612             timestamp_predicate, GUINT_TO_POINTER(xwindow));
2613
2614   return xevent.xproperty.time;
2615 }
2616
2617 static void
2618 fetch_net_wm_check_window (GdkScreen *screen)
2619 {
2620   GdkScreenX11 *screen_x11;
2621   GdkDisplay *display;
2622   Atom type;
2623   gint format;
2624   gulong n_items;
2625   gulong bytes_after;
2626   guchar *data;
2627   Window *xwindow;
2628   GTimeVal tv;
2629
2630   screen_x11 = GDK_SCREEN_X11 (screen);
2631   display = screen_x11->display;
2632
2633   g_return_if_fail (GDK_DISPLAY_X11 (display)->trusted_client);
2634
2635   g_get_current_time (&tv);
2636
2637   if (ABS  (tv.tv_sec - screen_x11->last_wmspec_check_time) < 15)
2638     return; /* we've checked recently */
2639
2640   screen_x11->last_wmspec_check_time = tv.tv_sec;
2641
2642   data = NULL;
2643   XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), screen_x11->xroot_window,
2644                       gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTING_WM_CHECK"),
2645                       0, G_MAXLONG, False, XA_WINDOW, &type, &format,
2646                       &n_items, &bytes_after, &data);
2647
2648   if (type != XA_WINDOW)
2649     {
2650       if (data)
2651         XFree (data);
2652       return;
2653     }
2654
2655   xwindow = (Window *)data;
2656
2657   if (screen_x11->wmspec_check_window == *xwindow)
2658     {
2659       XFree (xwindow);
2660       return;
2661     }
2662
2663   gdk_error_trap_push ();
2664
2665   /* Find out if this WM goes away, so we can reset everything. */
2666   XSelectInput (screen_x11->xdisplay, *xwindow, StructureNotifyMask);
2667   gdk_display_sync (display);
2668
2669   if (gdk_error_trap_pop () == Success)
2670     {
2671       screen_x11->wmspec_check_window = *xwindow;
2672       screen_x11->need_refetch_net_supported = TRUE;
2673       screen_x11->need_refetch_wm_name = TRUE;
2674
2675       /* Careful, reentrancy */
2676       _gdk_x11_screen_window_manager_changed (GDK_SCREEN (screen_x11));
2677     }
2678
2679   XFree (xwindow);
2680 }
2681
2682 /**
2683  * gdk_x11_screen_get_window_manager_name:
2684  * @screen: a #GdkScreen
2685  *
2686  * Returns the name of the window manager for @screen.
2687  *
2688  * Return value: the name of the window manager screen @screen, or
2689  * "unknown" if the window manager is unknown. The string is owned by GDK
2690  * and should not be freed.
2691  *
2692  * Since: 2.2
2693  **/
2694 const char*
2695 gdk_x11_screen_get_window_manager_name (GdkScreen *screen)
2696 {
2697   GdkScreenX11 *screen_x11;
2698
2699   screen_x11 = GDK_SCREEN_X11 (screen);
2700
2701   if (!G_LIKELY (GDK_DISPLAY_X11 (screen_x11->display)->trusted_client))
2702     return screen_x11->window_manager_name;
2703
2704   fetch_net_wm_check_window (screen);
2705
2706   if (screen_x11->need_refetch_wm_name)
2707     {
2708       /* Get the name of the window manager */
2709       screen_x11->need_refetch_wm_name = FALSE;
2710
2711       g_free (screen_x11->window_manager_name);
2712       screen_x11->window_manager_name = g_strdup ("unknown");
2713
2714       if (screen_x11->wmspec_check_window != None)
2715         {
2716           Atom type;
2717           gint format;
2718           gulong n_items;
2719           gulong bytes_after;
2720           gchar *name;
2721
2722           name = NULL;
2723
2724           gdk_error_trap_push ();
2725
2726           XGetWindowProperty (GDK_DISPLAY_XDISPLAY (screen_x11->display),
2727                               screen_x11->wmspec_check_window,
2728                               gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
2729                                                                      "_NET_WM_NAME"),
2730                               0, G_MAXLONG, False,
2731                               gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
2732                                                                      "UTF8_STRING"),
2733                               &type, &format,
2734                               &n_items, &bytes_after,
2735                               (guchar **)&name);
2736
2737           gdk_display_sync (screen_x11->display);
2738
2739           gdk_error_trap_pop ();
2740
2741           if (name != NULL)
2742             {
2743               g_free (screen_x11->window_manager_name);
2744               screen_x11->window_manager_name = g_strdup (name);
2745               XFree (name);
2746             }
2747         }
2748     }
2749
2750   return GDK_SCREEN_X11 (screen)->window_manager_name;
2751 }
2752
2753 typedef struct _NetWmSupportedAtoms NetWmSupportedAtoms;
2754
2755 struct _NetWmSupportedAtoms
2756 {
2757   Atom *atoms;
2758   gulong n_atoms;
2759 };
2760
2761 static void
2762 cleanup_atoms(gpointer data)
2763 {
2764   NetWmSupportedAtoms *supported_atoms = data;
2765   if (supported_atoms->atoms)
2766       XFree (supported_atoms->atoms);
2767   g_free (supported_atoms);
2768 }
2769
2770 /**
2771  * gdk_x11_screen_supports_net_wm_hint:
2772  * @screen: the relevant #GdkScreen.
2773  * @property: a property atom.
2774  *
2775  * This function is specific to the X11 backend of GDK, and indicates
2776  * whether the window manager supports a certain hint from the
2777  * Extended Window Manager Hints Specification. You can find this
2778  * specification on
2779  * <ulink url="http://www.freedesktop.org">http://www.freedesktop.org</ulink>.
2780  *
2781  * When using this function, keep in mind that the window manager
2782  * can change over time; so you shouldn't use this function in
2783  * a way that impacts persistent application state. A common bug
2784  * is that your application can start up before the window manager
2785  * does when the user logs in, and before the window manager starts
2786  * gdk_x11_screen_supports_net_wm_hint() will return %FALSE for every property.
2787  * You can monitor the window_manager_changed signal on #GdkScreen to detect
2788  * a window manager change.
2789  *
2790  * Return value: %TRUE if the window manager supports @property
2791  *
2792  * Since: 2.2
2793  **/
2794 gboolean
2795 gdk_x11_screen_supports_net_wm_hint (GdkScreen *screen,
2796                                      GdkAtom    property)
2797 {
2798   gulong i;
2799   GdkScreenX11 *screen_x11;
2800   NetWmSupportedAtoms *supported_atoms;
2801   GdkDisplay *display;
2802
2803   g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
2804
2805   screen_x11 = GDK_SCREEN_X11 (screen);
2806   display = screen_x11->display;
2807
2808   if (!G_LIKELY (GDK_DISPLAY_X11 (display)->trusted_client))
2809     return FALSE;
2810
2811   supported_atoms = g_object_get_data (G_OBJECT (screen), "gdk-net-wm-supported-atoms");
2812   if (!supported_atoms)
2813     {
2814       supported_atoms = g_new0 (NetWmSupportedAtoms, 1);
2815       g_object_set_data_full (G_OBJECT (screen), "gdk-net-wm-supported-atoms", supported_atoms, cleanup_atoms);
2816     }
2817
2818   fetch_net_wm_check_window (screen);
2819
2820   if (screen_x11->wmspec_check_window == None)
2821     return FALSE;
2822
2823   if (screen_x11->need_refetch_net_supported)
2824     {
2825       /* WM has changed since we last got the supported list,
2826        * refetch it.
2827        */
2828       Atom type;
2829       gint format;
2830       gulong bytes_after;
2831
2832       screen_x11->need_refetch_net_supported = FALSE;
2833
2834       if (supported_atoms->atoms)
2835         XFree (supported_atoms->atoms);
2836
2837       supported_atoms->atoms = NULL;
2838       supported_atoms->n_atoms = 0;
2839
2840       XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), screen_x11->xroot_window,
2841                           gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTED"),
2842                           0, G_MAXLONG, False, XA_ATOM, &type, &format,
2843                           &supported_atoms->n_atoms, &bytes_after,
2844                           (guchar **)&supported_atoms->atoms);
2845
2846       if (type != XA_ATOM)
2847         return FALSE;
2848     }
2849
2850   if (supported_atoms->atoms == NULL)
2851     return FALSE;
2852
2853   i = 0;
2854   while (i < supported_atoms->n_atoms)
2855     {
2856       if (supported_atoms->atoms[i] == gdk_x11_atom_to_xatom_for_display (display, property))
2857         return TRUE;
2858
2859       ++i;
2860     }
2861
2862   return FALSE;
2863 }
2864
2865 /**
2866  * gdk_net_wm_supports:
2867  * @property: a property atom.
2868  *
2869  * This function is specific to the X11 backend of GDK, and indicates
2870  * whether the window manager for the default screen supports a certain
2871  * hint from the Extended Window Manager Hints Specification. See
2872  * gdk_x11_screen_supports_net_wm_hint() for complete details.
2873  *
2874  * Return value: %TRUE if the window manager supports @property
2875  **/
2876 gboolean
2877 gdk_net_wm_supports (GdkAtom property)
2878 {
2879   return gdk_x11_screen_supports_net_wm_hint (gdk_screen_get_default (), property);
2880 }
2881
2882
2883 static void
2884 gdk_xsettings_notify_cb (const char       *name,
2885                          XSettingsAction   action,
2886                          XSettingsSetting *setting,
2887                          void             *data)
2888 {
2889   GdkEvent new_event;
2890   GdkScreen *screen = data;
2891   GdkScreenX11 *screen_x11 = data;
2892   int i;
2893
2894   if (screen_x11->xsettings_in_init)
2895     return;
2896
2897   new_event.type = GDK_SETTING;
2898   new_event.setting.window = gdk_screen_get_root_window (screen);
2899   new_event.setting.send_event = FALSE;
2900   new_event.setting.name = NULL;
2901
2902   for (i = 0; i < GDK_SETTINGS_N_ELEMENTS() ; i++)
2903     if (strcmp (GDK_SETTINGS_X_NAME (i), name) == 0)
2904       {
2905         new_event.setting.name = (char*) GDK_SETTINGS_GDK_NAME (i);
2906         break;
2907       }
2908
2909   if (!new_event.setting.name)
2910     return;
2911
2912   switch (action)
2913     {
2914     case XSETTINGS_ACTION_NEW:
2915       new_event.setting.action = GDK_SETTING_ACTION_NEW;
2916       break;
2917     case XSETTINGS_ACTION_CHANGED:
2918       new_event.setting.action = GDK_SETTING_ACTION_CHANGED;
2919       break;
2920     case XSETTINGS_ACTION_DELETED:
2921       new_event.setting.action = GDK_SETTING_ACTION_DELETED;
2922       break;
2923     }
2924
2925   gdk_event_put (&new_event);
2926 }
2927
2928 static gboolean
2929 check_transform (const gchar *xsettings_name,
2930                  GType        src_type,
2931                  GType        dest_type)
2932 {
2933   if (!g_value_type_transformable (src_type, dest_type))
2934     {
2935       g_warning ("Cannot transform xsetting %s of type %s to type %s\n",
2936                  xsettings_name,
2937                  g_type_name (src_type),
2938                  g_type_name (dest_type));
2939       return FALSE;
2940     }
2941   else
2942     return TRUE;
2943 }
2944
2945 /**
2946  * gdk_screen_get_setting:
2947  * @screen: the #GdkScreen where the setting is located
2948  * @name: the name of the setting
2949  * @value: location to store the value of the setting
2950  *
2951  * Retrieves a desktop-wide setting such as double-click time
2952  * for the #GdkScreen @screen.
2953  *
2954  * FIXME needs a list of valid settings here, or a link to
2955  * more information.
2956  *
2957  * Returns: %TRUE if the setting existed and a value was stored
2958  *   in @value, %FALSE otherwise.
2959  *
2960  * Since: 2.2
2961  **/
2962 gboolean
2963 gdk_screen_get_setting (GdkScreen   *screen,
2964                         const gchar *name,
2965                         GValue      *value)
2966 {
2967
2968   const char *xsettings_name = NULL;
2969   XSettingsResult result;
2970   XSettingsSetting *setting = NULL;
2971   GdkScreenX11 *screen_x11;
2972   gboolean success = FALSE;
2973   gint i;
2974   GValue tmp_val = { 0, };
2975
2976   g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
2977
2978   screen_x11 = GDK_SCREEN_X11 (screen);
2979
2980   for (i = 0; i < GDK_SETTINGS_N_ELEMENTS(); i++)
2981     if (strcmp (GDK_SETTINGS_GDK_NAME (i), name) == 0)
2982       {
2983         xsettings_name = GDK_SETTINGS_X_NAME (i);
2984         break;
2985       }
2986
2987   if (!xsettings_name)
2988     goto out;
2989
2990   result = xsettings_client_get_setting (screen_x11->xsettings_client,
2991                                          xsettings_name, &setting);
2992   if (result != XSETTINGS_SUCCESS)
2993     goto out;
2994
2995   switch (setting->type)
2996     {
2997     case XSETTINGS_TYPE_INT:
2998       if (check_transform (xsettings_name, G_TYPE_INT, G_VALUE_TYPE (value)))
2999         {
3000           g_value_init (&tmp_val, G_TYPE_INT);
3001           g_value_set_int (&tmp_val, setting->data.v_int);
3002           g_value_transform (&tmp_val, value);
3003
3004           success = TRUE;
3005         }
3006       break;
3007     case XSETTINGS_TYPE_STRING:
3008       if (check_transform (xsettings_name, G_TYPE_STRING, G_VALUE_TYPE (value)))
3009         {
3010           g_value_init (&tmp_val, G_TYPE_STRING);
3011           g_value_set_string (&tmp_val, setting->data.v_string);
3012           g_value_transform (&tmp_val, value);
3013
3014           success = TRUE;
3015         }
3016       break;
3017     case XSETTINGS_TYPE_COLOR:
3018       if (!check_transform (xsettings_name, GDK_TYPE_COLOR, G_VALUE_TYPE (value)))
3019         {
3020           GdkColor color;
3021
3022           g_value_init (&tmp_val, GDK_TYPE_COLOR);
3023
3024           color.pixel = 0;
3025           color.red = setting->data.v_color.red;
3026           color.green = setting->data.v_color.green;
3027           color.blue = setting->data.v_color.blue;
3028
3029           g_value_set_boxed (&tmp_val, &color);
3030
3031           g_value_transform (&tmp_val, value);
3032
3033           success = TRUE;
3034         }
3035       break;
3036     }
3037
3038   g_value_unset (&tmp_val);
3039
3040  out:
3041   if (setting)
3042     xsettings_setting_free (setting);
3043
3044   if (success)
3045     return TRUE;
3046   else
3047     return _gdk_x11_get_xft_setting (screen, name, value);
3048 }
3049
3050 static GdkFilterReturn
3051 gdk_xsettings_client_event_filter (GdkXEvent *xevent,
3052                                    GdkEvent  *event,
3053                                    gpointer   data)
3054 {
3055   GdkScreenX11 *screen = data;
3056
3057   if (xsettings_client_process_event (screen->xsettings_client, (XEvent *)xevent))
3058     return GDK_FILTER_REMOVE;
3059   else
3060     return GDK_FILTER_CONTINUE;
3061 }
3062
3063 static Bool
3064 gdk_xsettings_watch_cb (Window   window,
3065                         Bool     is_start,
3066                         long     mask,
3067                         void    *cb_data)
3068 {
3069   GdkWindow *gdkwin;
3070   GdkScreen *screen = cb_data;
3071
3072   gdkwin = gdk_window_lookup_for_display (gdk_screen_get_display (screen), window);
3073
3074   if (is_start)
3075     {
3076       if (gdkwin)
3077         g_object_ref (gdkwin);
3078       else
3079         {
3080           gdkwin = gdk_window_foreign_new_for_display (gdk_screen_get_display (screen), window);
3081
3082           /* gdk_window_foreign_new_for_display() can fail and return NULL if the
3083            * window has already been destroyed.
3084            */
3085           if (!gdkwin)
3086             return False;
3087         }
3088
3089       gdk_window_add_filter (gdkwin, gdk_xsettings_client_event_filter, screen);
3090     }
3091   else
3092     {
3093       if (!gdkwin)
3094         {
3095           /* gdkwin should not be NULL here, since if starting the watch succeeded
3096            * we have a reference on the window. It might mean that the caller didn't
3097            * remove the watch when it got a DestroyNotify event. Or maybe the
3098            * caller ignored the return value when starting the watch failed.
3099            */
3100           g_warning ("gdk_xsettings_watch_cb(): Couldn't find window to unwatch");
3101           return False;
3102         }
3103
3104       gdk_window_remove_filter (gdkwin, gdk_xsettings_client_event_filter, screen);
3105       g_object_unref (gdkwin);
3106     }
3107
3108   return True;
3109 }
3110
3111 void
3112 _gdk_windowing_event_data_copy (const GdkEvent *src,
3113                                 GdkEvent       *dst)
3114 {
3115 }
3116
3117 void
3118 _gdk_windowing_event_data_free (GdkEvent *event)
3119 {
3120 }
3121
3122 #define __GDK_EVENTS_X11_C__
3123 #include "gdkaliasdef.c"