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

   1 /* GDK - The GIMP Drawing Kit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include "gdk.h"
  28 #include "gdkprivate-x11.h"
  29 #include "gdkinternals.h"
  30 #include "gdkx.h"
  31 #include "gdkscreen-x11.h"
  32 #include "gdkdisplay-x11.h"
  33
  34 #include "gdkkeysyms.h"
  35
  36 #include "xsettings-client.h"
  37
  38 #if HAVE_CONFIG_H
  39 #  include <config.h>
  40 #  if STDC_HEADERS
  41 #    include <string.h>
  42 #  endif
  43 #endif
  44
  45 #include "gdkinputprivate.h"
  46
  47 #ifdef HAVE_XKB
  48 #include <X11/XKBlib.h>
  49 #endif
  50
  51 #include <X11/Xatom.h>
  52
  53 typedef struct _GdkIOClosure GdkIOClosure;
  54 typedef struct _GdkDisplaySource GdkDisplaySource;
  55
  56 #define DOUBLE_CLICK_TIME      250
  57 #define TRIPLE_CLICK_TIME      500
  58 #define DOUBLE_CLICK_DIST      5
  59 #define TRIPLE_CLICK_DIST      5
  60
  61 struct _GdkIOClosure
  62 {
  63   GdkInputFunction function;
  64   GdkInputCondition condition;
  65   GdkDestroyNotify notify;
  66   gpointer data;
  67 };
  68
  69 struct _GdkDisplaySource
  70 {
  71   GSource source;
  72
  73   GdkDisplay *display;
  74   GPollFD event_poll_fd;
  75 };
  76
  77 /*
  78  * Private function declarations
  79  */
  80
  81 static gint      gdk_event_apply_filters (XEvent   *xevent,
  82                                           GdkEvent *event,
  83                                           GList    *filters);
  84 static gboolean  gdk_event_translate     (GdkDisplay *display,
  85                                           GdkEvent   *event,
  86                                           XEvent     *xevent,
  87                                           gboolean    return_exposes);
  88
  89 static gboolean gdk_event_prepare  (GSource     *source,
  90                                     gint        *timeout);
  91 static gboolean gdk_event_check    (GSource     *source);
  92 static gboolean gdk_event_dispatch (GSource     *source,
  93                                     GSourceFunc  callback,
  94                                     gpointer     user_data);
  95
  96 static GdkFilterReturn gdk_wm_protocols_filter (GdkXEvent *xev,
  97                                                 GdkEvent  *event,
  98                                                 gpointer   data);
  99
 100 static GSource *gdk_display_source_new (GdkDisplay *display);
 101 static gboolean gdk_check_xpending     (GdkDisplay *display);
 102
 103 static void gdk_xsettings_watch_cb  (Window            window,
 104                                      Bool              is_start,
 105                                      long              mask,
 106                                      void             *cb_data);
 107 static void gdk_xsettings_notify_cb (const char       *name,
 108                                      XSettingsAction   action,
 109                                      XSettingsSetting *setting,
 110                                      void             *data);
 111
 112 /* Private variable declarations
 113  */
 114
 115 static GList *display_sources;
 116
 117 static GSourceFuncs event_funcs = {
 118   gdk_event_prepare,
 119   gdk_event_check,
 120   gdk_event_dispatch,
 121   NULL
 122 };
 123
 124 static GSource *
 125 gdk_display_source_new (GdkDisplay *display)
 126 {
 127   GSource *source = g_source_new (&event_funcs, sizeof (GdkDisplaySource));
 128   GdkDisplaySource *display_source = (GdkDisplaySource *)source;
 129
 130   display_source->display = display;
 131
 132   return source;
 133 }
 134
 135 static gboolean
 136 gdk_check_xpending (GdkDisplay *display)
 137 {
 138   return XPending (GDK_DISPLAY_XDISPLAY (display));
 139 }
 140
 141 /*********************************************
 142  * Functions for maintaining the event queue *
 143  *********************************************/
 144
 145 void
 146 _gdk_x11_events_init_screen (GdkScreen *screen)
 147 {
 148   GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
 149
 150   /* Keep a flag to avoid extra notifies that we don't need
 151    */
 152   screen_x11->xsettings_in_init = TRUE;
 153   screen_x11->xsettings_client = xsettings_client_new (screen_x11->xdisplay,
 154                                                        screen_x11->screen_num,
 155                                                        gdk_xsettings_notify_cb,
 156                                                        gdk_xsettings_watch_cb,
 157                                                        screen);
 158   screen_x11->xsettings_in_init = FALSE;
 159 }
 160
 161 void
 162 _gdk_x11_events_uninit_screen (GdkScreen *screen)
 163 {
 164   GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
 165
 166   xsettings_client_destroy (screen_x11->xsettings_client);
 167   screen_x11->xsettings_client = NULL;
 168 }
 169
 170 void
 171 _gdk_events_init (GdkDisplay *display)
 172 {
 173   GSource *source;
 174   GdkDisplaySource *display_source;
 175   GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
 176
 177   int connection_number = ConnectionNumber (display_x11->xdisplay);
 178   GDK_NOTE (MISC, g_message ("connection number: %d", connection_number));
 179
 180
 181   source = display_x11->event_source = gdk_display_source_new (display);
 182   display_source = (GdkDisplaySource*) source;
 183   g_source_set_priority (source, GDK_PRIORITY_EVENTS);
 184
 185   display_source->event_poll_fd.fd = connection_number;
 186   display_source->event_poll_fd.events = G_IO_IN;
 187
 188   g_source_add_poll (source, &display_source->event_poll_fd);
 189   g_source_set_can_recurse (source, TRUE);
 190   g_source_attach (source, NULL);
 191
 192   display_sources = g_list_prepend (display_sources,display_source);
 193
 194   gdk_display_add_client_message_filter (
 195         display,
 196         gdk_atom_intern ("WM_PROTOCOLS", FALSE),
 197         gdk_wm_protocols_filter,
 198         NULL);
 199 }
 200
 201
 202 /**
 203  * gdk_events_pending:
 204  *
 205  * Checks if any events are ready to be processed for any display.
 206  *
 207  * Return value:  %TRUE if any events are pending.
 208  **/
 209 gboolean
 210 gdk_events_pending (void)
 211 {
 212   GList *tmp_list;
 213
 214   for (tmp_list = display_sources; tmp_list; tmp_list = tmp_list->next)
 215     {
 216       GdkDisplaySource *tmp_source = tmp_list->data;
 217       GdkDisplay *display = tmp_source->display;
 218
 219       if (_gdk_event_queue_find_first (display))
 220         return TRUE;
 221     }
 222
 223   for (tmp_list = display_sources; tmp_list; tmp_list = tmp_list->next)
 224     {
 225       GdkDisplaySource *tmp_source = tmp_list->data;
 226       GdkDisplay *display = tmp_source->display;
 227
 228       if (gdk_check_xpending (display))
 229         return TRUE;
 230     }
 231
 232   return FALSE;
 233 }
 234
 235 static Bool
 236 graphics_expose_predicate (Display  *display,
 237                            XEvent   *xevent,
 238                            XPointer  arg)
 239 {
 240   if (xevent->xany.window == GDK_DRAWABLE_XID ((GdkDrawable *)arg) &&
 241       (xevent->xany.type == GraphicsExpose ||
 242        xevent->xany.type == NoExpose))
 243     return True;
 244   else
 245     return False;
 246 }
 247
 248 /**
 249  * gdk_event_get_graphics_expose:
 250  * @window: the #GdkWindow to wait for the events for.
 251  *
 252  * Waits for a GraphicsExpose or NoExpose event from the X server.
 253  * This is used in the #GtkText and #GtkCList widgets in GTK+ to make sure any
 254  * GraphicsExpose events are handled before the widget is scrolled.
 255  *
 256  * Return value:  a #GdkEventExpose if a GraphicsExpose was received, or %NULL if a
 257  * NoExpose event was received.
 258  **/
 259 GdkEvent*
 260 gdk_event_get_graphics_expose (GdkWindow *window)
 261 {
 262   XEvent xevent;
 263   GdkEvent *event;
 264
 265   g_return_val_if_fail (window != NULL, NULL);
 266
 267   XIfEvent (GDK_WINDOW_XDISPLAY (window), &xevent,
 268             graphics_expose_predicate, (XPointer) window);
 269
 270   if (xevent.xany.type == GraphicsExpose)
 271     {
 272       event = gdk_event_new (GDK_NOTHING);
 273
 274       if (gdk_event_translate (GDK_WINDOW_DISPLAY (window), event,
 275                                &xevent, TRUE))
 276         return event;
 277       else
 278         gdk_event_free (event);
 279     }
 280
 281   return NULL;
 282 }
 283
 284 static gint
 285 gdk_event_apply_filters (XEvent *xevent,
 286                          GdkEvent *event,
 287                          GList *filters)
 288 {
 289   GList *tmp_list;
 290   GdkFilterReturn result;
 291
 292   tmp_list = filters;
 293
 294   while (tmp_list)
 295     {
 296       GdkEventFilter *filter = (GdkEventFilter*) tmp_list->data;
 297
 298       tmp_list = tmp_list->next;
 299       result = filter->function (xevent, event, filter->data);
 300       if (result !=  GDK_FILTER_CONTINUE)
 301         return result;
 302     }
 303
 304   return GDK_FILTER_CONTINUE;
 305 }
 306
 307 /**
 308  * gdk_display_add_client_message_filter:
 309  * @display: a #GdkDisplay for which this message filter applies
 310  * @message_type: the type of ClientMessage events to receive.
 311  *   This will be checked against the @message_type field
 312  *   of the XClientMessage event struct.
 313  * @func: the function to call to process the event.
 314  * @data: user data to pass to @func.
 315  *
 316  * Adds a filter to be called when X ClientMessage events are received.
 317  *
 318  * Since: 2.2
 319  **/
 320 void
 321 gdk_display_add_client_message_filter (GdkDisplay   *display,
 322                                        GdkAtom       message_type,
 323                                        GdkFilterFunc func,
 324                                        gpointer      data)
 325 {
 326   GdkClientFilter *filter;
 327   g_return_if_fail (GDK_IS_DISPLAY (display));
 328   filter = g_new (GdkClientFilter, 1);
 329
 330   filter->type = message_type;
 331   filter->function = func;
 332   filter->data = data;
 333
 334   GDK_DISPLAY_X11(display)->client_filters =
 335     g_list_prepend (GDK_DISPLAY_X11 (display)->client_filters,
 336                     filter);
 337 }
 338
 339 /**
 340  * gdk_add_client_message_filter:
 341  * @message_type: the type of ClientMessage events to receive. This will be
 342  *     checked against the <structfield>message_type</structfield> field of the
 343  *     XClientMessage event struct.
 344  * @func: the function to call to process the event.
 345  * @data: user data to pass to @func.
 346  *
 347  * Adds a filter to the default display to be called when X ClientMessage events
 348  * are received. See gdk_display_add_client_message_filter().
 349  **/
 350 void
 351 gdk_add_client_message_filter (GdkAtom       message_type,
 352                                GdkFilterFunc func,
 353                                gpointer      data)
 354 {
 355   gdk_display_add_client_message_filter (gdk_display_get_default (),
 356                                          message_type, func, data);
 357 }
 358
 359 static void
 360 gdk_check_wm_state_changed (GdkWindow *window)
 361 {
 362   Atom type;
 363   gint format;
 364   gulong nitems;
 365   gulong bytes_after;
 366   Atom *atoms = NULL;
 367   gulong i;
 368   gboolean found_sticky, found_maxvert, found_maxhorz, found_fullscreen;
 369   GdkWindowState old_state;
 370   GdkDisplay *display = GDK_WINDOW_DISPLAY (window);
 371
 372   if (GDK_WINDOW_DESTROYED (window) ||
 373       gdk_window_get_window_type (window) != GDK_WINDOW_TOPLEVEL)
 374     return;
 375
 376   found_sticky = FALSE;
 377   found_maxvert = FALSE;
 378   found_maxhorz = FALSE;
 379   found_fullscreen = FALSE;
 380
 381   XGetWindowProperty (GDK_WINDOW_XDISPLAY (window), GDK_WINDOW_XID (window),
 382                       gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE"),
 383                       0, G_MAXLONG, False, XA_ATOM, &type, &format, &nitems,
 384                       &bytes_after, (guchar **)&atoms);
 385
 386   if (type != None)
 387     {
 388       Atom sticky_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_STICKY");
 389       Atom maxvert_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_MAXIMIZED_VERT");
 390       Atom maxhorz_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_MAXIMIZED_HORZ");
 391       Atom fullscreen_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_FULLSCREEN");
 392
 393       i = 0;
 394       while (i < nitems)
 395         {
 396           if (atoms[i] == sticky_atom)
 397             found_sticky = TRUE;
 398           else if (atoms[i] == maxvert_atom)
 399             found_maxvert = TRUE;
 400           else if (atoms[i] == maxhorz_atom)
 401             found_maxhorz = TRUE;
 402           else if (atoms[i] == fullscreen_atom)
 403             found_fullscreen = TRUE;
 404
 405           ++i;
 406         }
 407
 408       XFree (atoms);
 409     }
 410
 411   /* For found_sticky to remain TRUE, we have to also be on desktop
 412    * 0xFFFFFFFF
 413    */
 414
 415   if (found_sticky)
 416     {
 417       gulong *desktop;
 418
 419       XGetWindowProperty (GDK_WINDOW_XDISPLAY (window),
 420                           GDK_WINDOW_XID (window),
 421                           gdk_x11_get_xatom_by_name_for_display
 422                           (display, "_NET_WM_DESKTOP"),
 423                           0, G_MAXLONG, False, XA_CARDINAL, &type,
 424                           &format, &nitems,
 425                           &bytes_after, (guchar **)&desktop);
 426
 427       if (type != None)
 428         {
 429           if (*desktop != 0xFFFFFFFF)
 430             found_sticky = FALSE;
 431           XFree (desktop);
 432         }
 433     }
 434
 435   old_state = gdk_window_get_state (window);
 436
 437   if (old_state & GDK_WINDOW_STATE_STICKY)
 438     {
 439       if (!found_sticky)
 440         gdk_synthesize_window_state (window,
 441                                      GDK_WINDOW_STATE_STICKY,
 442                                      0);
 443     }
 444   else
 445     {
 446       if (found_sticky)
 447         gdk_synthesize_window_state (window,
 448                                      0,
 449                                      GDK_WINDOW_STATE_STICKY);
 450     }
 451
 452   if (old_state & GDK_WINDOW_STATE_FULLSCREEN)
 453     {
 454       if (!found_fullscreen)
 455         gdk_synthesize_window_state (window,
 456                                      GDK_WINDOW_STATE_FULLSCREEN,
 457                                      0);
 458     }
 459   else
 460     {
 461       if (found_fullscreen)
 462         gdk_synthesize_window_state (window,
 463                                      0,
 464                                      GDK_WINDOW_STATE_FULLSCREEN);
 465     }
 466
 467   /* Our "maximized" means both vertical and horizontal; if only one,
 468    * we don't expose that via GDK
 469    */
 470   if (old_state & GDK_WINDOW_STATE_MAXIMIZED)
 471     {
 472       if (!(found_maxvert && found_maxhorz))
 473         gdk_synthesize_window_state (window,
 474                                      GDK_WINDOW_STATE_MAXIMIZED,
 475                                      0);
 476     }
 477   else
 478     {
 479       if (found_maxvert && found_maxhorz)
 480         gdk_synthesize_window_state (window,
 481                                      0,
 482                                      GDK_WINDOW_STATE_MAXIMIZED);
 483     }
 484 }
 485
 486 #define HAS_FOCUS(window_impl)                           \
 487   ((window_impl)->has_focus || (window_impl)->has_pointer_focus)
 488
 489 static void
 490 generate_focus_event (GdkWindow *window,
 491                       gboolean   in)
 492 {
 493   GdkEvent event;
 494
 495   event.type = GDK_FOCUS_CHANGE;
 496   event.focus_change.window = window;
 497   event.focus_change.send_event = FALSE;
 498   event.focus_change.in = in;
 499
 500   gdk_event_put (&event);
 501 }
 502
 503 static void
 504 set_screen_from_root (GdkDisplay *display,
 505                       GdkEvent   *event,
 506                       Window      xrootwin)
 507 {
 508   GdkScreen *screen;
 509
 510   screen = _gdk_x11_display_screen_for_xrootwin (display, xrootwin);
 511   g_assert (screen);
 512
 513   gdk_event_set_screen (event, screen);
 514 }
 515
 516 static void
 517 translate_key_event (GdkDisplay *display,
 518                      GdkEvent   *event,
 519                      XEvent     *xevent)
 520 {
 521   GdkKeymap *keymap = gdk_keymap_get_for_display (display);
 522   gunichar c = 0;
 523   guchar buf[7];
 524
 525   event->key.type = xevent->xany.type == KeyPress ? GDK_KEY_PRESS : GDK_KEY_RELEASE;
 526   event->key.time = xevent->xkey.time;
 527
 528   event->key.state = (GdkModifierType) xevent->xkey.state;
 529   event->key.group = _gdk_x11_get_group_for_state (display, xevent->xkey.state);
 530   event->key.hardware_keycode = xevent->xkey.keycode;
 531
 532   event->key.keyval = GDK_VoidSymbol;
 533
 534   gdk_keymap_translate_keyboard_state (keymap,
 535                                        event->key.hardware_keycode,
 536                                        event->key.state,
 537                                        event->key.group,
 538                                        &event->key.keyval,
 539                                        NULL, NULL, NULL);
 540
 541   /* Fill in event->string crudely, since various programs
 542    * depend on it.
 543    */
 544   event->key.string = NULL;
 545
 546   if (event->key.keyval != GDK_VoidSymbol)
 547     c = gdk_keyval_to_unicode (event->key.keyval);
 548
 549   if (c)
 550     {
 551       gsize bytes_written;
 552       gint len;
 553
 554       /* Apply the control key - Taken from Xlib
 555        */
 556       if (event->key.state & GDK_CONTROL_MASK)
 557         {
 558           if ((c >= '@' && c < '\177') || c == ' ') c &= 0x1F;
 559           else if (c == '2')
 560             {
 561               event->key.string = g_memdup ("\0\0", 2);
 562               event->key.length = 1;
 563               buf[0] = '\0';
 564               goto out;
 565             }
 566           else if (c >= '3' && c <= '7') c -= ('3' - '\033');
 567           else if (c == '8') c = '\177';
 568           else if (c == '/') c = '_' & 0x1F;
 569         }
 570
 571       len = g_unichar_to_utf8 (c, buf);
 572       buf[len] = '\0';
 573
 574       event->key.string = g_locale_from_utf8 (buf, len,
 575                                               NULL, &bytes_written,
 576                                               NULL);
 577       if (event->key.string)
 578         event->key.length = bytes_written;
 579     }
 580   else if (event->key.keyval == GDK_Escape)
 581     {
 582       event->key.length = 1;
 583       event->key.string = g_strdup ("\033");
 584     }
 585   else if (event->key.keyval == GDK_Return ||
 586           event->key.keyval == GDK_KP_Enter)
 587     {
 588       event->key.length = 1;
 589       event->key.string = g_strdup ("\r");
 590     }
 591
 592   if (!event->key.string)
 593     {
 594       event->key.length = 0;
 595       event->key.string = g_strdup ("");
 596     }
 597
 598  out:
 599 #ifdef G_ENABLE_DEBUG
 600   if (_gdk_debug_flags & GDK_DEBUG_EVENTS)
 601     {
 602       g_message ("%s:\t\twindow: %ld     key: %12s  %d",
 603                  event->type == GDK_KEY_PRESS ? "key press  " : "key release",
 604                  xevent->xkey.window,
 605                  event->key.keyval ? gdk_keyval_name (event->key.keyval) : "(none)",
 606                  event->key.keyval);
 607
 608       if (event->key.length > 0)
 609         g_message ("\t\tlength: %4d string: \"%s\"",
 610                    event->key.length, buf);
 611     }
 612 #endif /* G_ENABLE_DEBUG */
 613 }
 614
 615 /* Return the window this has to do with, if any, rather
 616  * than the frame or root window that was selecting
 617  * for substructure
 618  */
 619 static Window
 620 get_real_window (XEvent *event)
 621 {
 622   switch (event->type)
 623     {
 624     case CreateNotify:
 625       return event->xcreatewindow.window;
 626
 627     case DestroyNotify:
 628       return event->xdestroywindow.window;
 629
 630     case UnmapNotify:
 631       return event->xunmap.window;
 632
 633     case MapNotify:
 634       return event->xmap.window;
 635
 636     case MapRequest:
 637       return event->xmaprequest.window;
 638
 639     case ReparentNotify:
 640      return event->xreparent.window;
 641
 642     case ConfigureNotify:
 643       return event->xconfigure.window;
 644
 645     case ConfigureRequest:
 646       return event->xconfigurerequest.window;
 647
 648     case GravityNotify:
 649       return event->xgravity.window;
 650
 651     case CirculateNotify:
 652       return event->xcirculate.window;
 653
 654     case CirculateRequest:
 655       return event->xcirculaterequest.window;
 656
 657     default:
 658       return event->xany.window;
 659     }
 660 }
 661
 662 static gboolean
 663 gdk_event_translate (GdkDisplay *display,
 664                      GdkEvent   *event,
 665                      XEvent     *xevent,
 666                      gboolean    return_exposes)
 667 {
 668
 669   GdkWindow *window;
 670   GdkWindowObject *window_private;
 671   GdkWindowImplX11 *window_impl = NULL;
 672   gint return_val;
 673   gint xoffset, yoffset;
 674   GdkScreen *screen = NULL;
 675   GdkScreenX11 *screen_x11 = NULL;
 676   GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
 677   Window xwindow;
 678
 679   return_val = FALSE;
 680
 681   /* init these, since the done: block uses them */
 682   window = NULL;
 683   window_private = NULL;
 684   event->any.window = NULL;
 685
 686   if (_gdk_default_filters)
 687     {
 688       /* Apply global filters */
 689       GdkFilterReturn result;
 690       result = gdk_event_apply_filters (xevent, event,
 691                                         _gdk_default_filters);
 692
 693       if (result != GDK_FILTER_CONTINUE)
 694         {
 695           return_val = (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
 696           goto done;
 697         }
 698     }
 699
 700    /* We handle events with window=None
 701     *  specially - they are generated by XFree86's XInput under
 702     *  some circumstances. This handling for obvious reasons
 703     * goes before we bother to lookup the event window.
 704     */
 705
 706   if (xevent->xany.window == None)
 707     {
 708       return_val = _gdk_input_window_none_event (event, xevent);
 709
 710       if (return_val >= 0)      /* was handled */
 711         return return_val;
 712       else
 713         return_val = FALSE;
 714     }
 715
 716   /* Find the GdkWindow that this event relates to.
 717    * Basically this means substructure events
 718    * are reported same as structure events
 719    */
 720   xwindow = get_real_window (xevent);
 721
 722   window = gdk_window_lookup_for_display (display, xwindow);
 723   window_private = (GdkWindowObject *) window;
 724
 725   if (window)
 726     {
 727       screen = GDK_WINDOW_SCREEN (window);
 728       screen_x11 = GDK_SCREEN_X11 (screen);
 729     }
 730
 731   if (window != NULL)
 732     {
 733       /* Window may be a pixmap, so check its type.
 734        * (This check is probably too expensive unless
 735        *  GLib short-circuits an exact type match,
 736        *  which has been proposed)
 737        */
 738       if (GDK_IS_WINDOW (window))
 739         {
 740           window_impl = GDK_WINDOW_IMPL_X11 (window_private->impl);
 741
 742           /* Move key events on focus window to the real toplevel, and
 743            * filter out all other events on focus window
 744            */
 745           if (xwindow == window_impl->focus_window)
 746             {
 747               switch (xevent->type)
 748                 {
 749                 case KeyPress:
 750                 case KeyRelease:
 751                   xwindow = GDK_WINDOW_XID (window);
 752                   xevent->xany.window = xwindow;
 753                   break;
 754                 default:
 755                   return FALSE;
 756                 }
 757             }
 758         }
 759
 760       g_object_ref (window);
 761     }
 762
 763   event->any.window = window;
 764   event->any.send_event = xevent->xany.send_event ? TRUE : FALSE;
 765
 766   if (window_private && GDK_WINDOW_DESTROYED (window))
 767     {
 768       if (xevent->type != DestroyNotify)
 769         {
 770           return_val = FALSE;
 771           goto done;
 772         }
 773     }
 774   else if (window_private)
 775     {
 776       /* Apply per-window filters */
 777       GdkFilterReturn result;
 778       result = gdk_event_apply_filters (xevent, event,
 779                                         window_private->filters);
 780
 781       if (result != GDK_FILTER_CONTINUE)
 782         {
 783           return_val = (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
 784           goto done;
 785         }
 786     }
 787
 788   if (screen_x11 && screen_x11->wmspec_check_window != None &&
 789       xwindow == screen_x11->wmspec_check_window)
 790     {
 791       if (xevent->type == DestroyNotify)
 792         {
 793           screen_x11->wmspec_check_window = None;
 794           g_free (screen_x11->window_manager_name);
 795           screen_x11->window_manager_name = g_strdup ("unknown");
 796
 797           /* careful, reentrancy */
 798           _gdk_x11_screen_window_manager_changed (GDK_SCREEN (screen_x11));
 799         }
 800
 801       /* Eat events on this window unless someone had wrapped
 802        * it as a foreign window
 803        */
 804       if (window == NULL)
 805         {
 806           return_val = FALSE;
 807           goto done;
 808         }
 809     }
 810
 811   if (window &&
 812       (xevent->xany.type == MotionNotify ||
 813        xevent->xany.type == ButtonRelease))
 814     {
 815       if (_gdk_moveresize_handle_event (xevent))
 816         {
 817           return_val = FALSE;
 818           goto done;
 819         }
 820     }
 821
 822   /* We do a "manual" conversion of the XEvent to a
 823    *  GdkEvent. The structures are mostly the same so
 824    *  the conversion is fairly straightforward. We also
 825    *  optionally print debugging info regarding events
 826    *  received.
 827    */
 828
 829   return_val = TRUE;
 830
 831   if (window)
 832     {
 833       _gdk_windowing_window_get_offsets (window, &xoffset, &yoffset);
 834     }
 835   else
 836     {
 837       xoffset = 0;
 838       yoffset = 0;
 839     }
 840
 841   switch (xevent->type)
 842     {
 843     case KeyPress:
 844       if (window_private == NULL)
 845         {
 846           return_val = FALSE;
 847           break;
 848         }
 849       translate_key_event (display, event, xevent);
 850       break;
 851
 852     case KeyRelease:
 853       if (window_private == NULL)
 854         {
 855           return_val = FALSE;
 856           break;
 857         }
 858
 859       /* Emulate detectable auto-repeat by checking to see
 860        * if the next event is a key press with the same
 861        * keycode and timestamp, and if so, ignoring the event.
 862        */
 863
 864       if (!display_x11->have_xkb_autorepeat && XPending (xevent->xkey.display))
 865         {
 866           XEvent next_event;
 867
 868           XPeekEvent (xevent->xkey.display, &next_event);
 869
 870           if (next_event.type == KeyPress &&
 871               next_event.xkey.keycode == xevent->xkey.keycode &&
 872               next_event.xkey.time == xevent->xkey.time)
 873             {
 874               return_val = FALSE;
 875               break;
 876             }
 877         }
 878
 879       translate_key_event (display, event, xevent);
 880       break;
 881
 882     case ButtonPress:
 883       GDK_NOTE (EVENTS,
 884                 g_message ("button press:\t\twindow: %ld  x,y: %d %d  button: %d",
 885                            xevent->xbutton.window,
 886                            xevent->xbutton.x, xevent->xbutton.y,
 887                            xevent->xbutton.button));
 888
 889       if (window_private == NULL ||
 890           ((window_private->extension_events != 0) &&
 891            display_x11->input_ignore_core))
 892         {
 893           return_val = FALSE;
 894           break;
 895         }
 896
 897       /* If we get a ButtonPress event where the button is 4 or 5,
 898          it's a Scroll event */
 899       switch (xevent->xbutton.button)
 900         {
 901         case 4: /* up */
 902         case 5: /* down */
 903         case 6: /* left */
 904         case 7: /* right */
 905           event->scroll.type = GDK_SCROLL;
 906
 907           if (xevent->xbutton.button == 4)
 908             event->scroll.direction = GDK_SCROLL_UP;
 909           else if (xevent->xbutton.button == 5)
 910             event->scroll.direction = GDK_SCROLL_DOWN;
 911           else if (xevent->xbutton.button == 6)
 912             event->scroll.direction = GDK_SCROLL_LEFT;
 913           else
 914             event->scroll.direction = GDK_SCROLL_RIGHT;
 915
 916           event->scroll.window = window;
 917           event->scroll.time = xevent->xbutton.time;
 918           event->scroll.x = xevent->xbutton.x + xoffset;
 919           event->scroll.y = xevent->xbutton.y + yoffset;
 920           event->scroll.x_root = (gfloat)xevent->xbutton.x_root;
 921           event->scroll.y_root = (gfloat)xevent->xbutton.y_root;
 922           event->scroll.state = (GdkModifierType) xevent->xbutton.state;
 923           event->scroll.device = display->core_pointer;
 924
 925           set_screen_from_root (display, event, xevent->xbutton.root);
 926
 927           break;
 928
 929         default:
 930           event->button.type = GDK_BUTTON_PRESS;
 931           event->button.window = window;
 932           event->button.time = xevent->xbutton.time;
 933           event->button.x = xevent->xbutton.x + xoffset;
 934           event->button.y = xevent->xbutton.y + yoffset;
 935           event->button.x_root = (gfloat)xevent->xbutton.x_root;
 936           event->button.y_root = (gfloat)xevent->xbutton.y_root;
 937           event->button.axes = NULL;
 938           event->button.state = (GdkModifierType) xevent->xbutton.state;
 939           event->button.button = xevent->xbutton.button;
 940           event->button.device = display->core_pointer;
 941
 942           set_screen_from_root (display, event, xevent->xbutton.root);
 943
 944           _gdk_event_button_generate (display, event);
 945           break;
 946         }
 947
 948       break;
 949
 950     case ButtonRelease:
 951       GDK_NOTE (EVENTS,
 952                 g_message ("button release:\twindow: %ld  x,y: %d %d  button: %d",
 953                            xevent->xbutton.window,
 954                            xevent->xbutton.x, xevent->xbutton.y,
 955                            xevent->xbutton.button));
 956
 957       if (window_private == NULL ||
 958           ((window_private->extension_events != 0) &&
 959            display_x11->input_ignore_core))
 960         {
 961           return_val = FALSE;
 962           break;
 963         }
 964
 965       /* We treat button presses as scroll wheel events, so ignore the release */
 966       if (xevent->xbutton.button == 4 || xevent->xbutton.button == 5 ||
 967           xevent->xbutton.button == 6 || xevent->xbutton.button ==7)
 968         {
 969           return_val = FALSE;
 970           break;
 971         }
 972
 973       event->button.type = GDK_BUTTON_RELEASE;
 974       event->button.window = window;
 975       event->button.time = xevent->xbutton.time;
 976       event->button.x = xevent->xbutton.x + xoffset;
 977       event->button.y = xevent->xbutton.y + yoffset;
 978       event->button.x_root = (gfloat)xevent->xbutton.x_root;
 979       event->button.y_root = (gfloat)xevent->xbutton.y_root;
 980       event->button.axes = NULL;
 981       event->button.state = (GdkModifierType) xevent->xbutton.state;
 982       event->button.button = xevent->xbutton.button;
 983       event->button.device = display->core_pointer;
 984
 985       set_screen_from_root (display, event, xevent->xbutton.root);
 986
 987       break;
 988
 989     case MotionNotify:
 990       GDK_NOTE (EVENTS,
 991                 g_message ("motion notify:\t\twindow: %ld  x,y: %d %d  hint: %s",
 992                            xevent->xmotion.window,
 993                            xevent->xmotion.x, xevent->xmotion.y,
 994                            (xevent->xmotion.is_hint) ? "true" : "false"));
 995
 996       if (window_private == NULL ||
 997           ((window_private->extension_events != 0) &&
 998            display_x11->input_ignore_core))
 999         {
1000           return_val = FALSE;
1001           break;
1002         }
1003
1004       event->motion.type = GDK_MOTION_NOTIFY;
1005       event->motion.window = window;
1006       event->motion.time = xevent->xmotion.time;
1007       event->motion.x = xevent->xmotion.x + xoffset;
1008       event->motion.y = xevent->xmotion.y + yoffset;
1009       event->motion.x_root = (gfloat)xevent->xmotion.x_root;
1010       event->motion.y_root = (gfloat)xevent->xmotion.y_root;
1011       event->motion.axes = NULL;
1012       event->motion.state = (GdkModifierType) xevent->xmotion.state;
1013       event->motion.is_hint = xevent->xmotion.is_hint;
1014       event->motion.device = display->core_pointer;
1015
1016       set_screen_from_root (display, event, xevent->xmotion.root);
1017
1018       break;
1019
1020     case EnterNotify:
1021       GDK_NOTE (EVENTS,
1022                 g_message ("enter notify:\t\twindow: %ld  detail: %d subwin: %ld",
1023                            xevent->xcrossing.window,
1024                            xevent->xcrossing.detail,
1025                            xevent->xcrossing.subwindow));
1026
1027       if (window_private == NULL)
1028         {
1029           return_val = FALSE;
1030           break;
1031         }
1032
1033       /* Handle focusing (in the case where no window manager is running */
1034       if (window &&
1035           GDK_WINDOW_TYPE (window) != GDK_WINDOW_CHILD &&
1036           xevent->xcrossing.detail != NotifyInferior &&
1037           xevent->xcrossing.focus && !window_impl->has_focus)
1038         {
1039           gboolean had_focus = HAS_FOCUS (window_impl);
1040
1041           window_impl->has_pointer_focus = TRUE;
1042
1043           if (HAS_FOCUS (window_impl) != had_focus)
1044             generate_focus_event (window, TRUE);
1045         }
1046
1047       /* Tell XInput stuff about it if appropriate */
1048       if (window_private &&
1049           !GDK_WINDOW_DESTROYED (window) &&
1050           window_private->extension_events != 0)
1051         _gdk_input_enter_event (&xevent->xcrossing, window);
1052
1053       event->crossing.type = GDK_ENTER_NOTIFY;
1054       event->crossing.window = window;
1055
1056       /* If the subwindow field of the XEvent is non-NULL, then
1057        *  lookup the corresponding GdkWindow.
1058        */
1059       if (xevent->xcrossing.subwindow != None)
1060         event->crossing.subwindow = gdk_window_lookup_for_display (display, xevent->xcrossing.subwindow);
1061       else
1062         event->crossing.subwindow = NULL;
1063
1064       event->crossing.time = xevent->xcrossing.time;
1065       event->crossing.x = xevent->xcrossing.x + xoffset;
1066       event->crossing.y = xevent->xcrossing.y + yoffset;
1067       event->crossing.x_root = xevent->xcrossing.x_root;
1068       event->crossing.y_root = xevent->xcrossing.y_root;
1069
1070       set_screen_from_root (display, event, xevent->xcrossing.root);
1071
1072       /* Translate the crossing mode into Gdk terms.
1073        */
1074       switch (xevent->xcrossing.mode)
1075         {
1076         case NotifyNormal:
1077           event->crossing.mode = GDK_CROSSING_NORMAL;
1078           break;
1079         case NotifyGrab:
1080           event->crossing.mode = GDK_CROSSING_GRAB;
1081           break;
1082         case NotifyUngrab:
1083           event->crossing.mode = GDK_CROSSING_UNGRAB;
1084           break;
1085         };
1086
1087       /* Translate the crossing detail into Gdk terms.
1088        */
1089       switch (xevent->xcrossing.detail)
1090         {
1091         case NotifyInferior:
1092           event->crossing.detail = GDK_NOTIFY_INFERIOR;
1093           break;
1094         case NotifyAncestor:
1095           event->crossing.detail = GDK_NOTIFY_ANCESTOR;
1096           break;
1097         case NotifyVirtual:
1098           event->crossing.detail = GDK_NOTIFY_VIRTUAL;
1099           break;
1100         case NotifyNonlinear:
1101           event->crossing.detail = GDK_NOTIFY_NONLINEAR;
1102           break;
1103         case NotifyNonlinearVirtual:
1104           event->crossing.detail = GDK_NOTIFY_NONLINEAR_VIRTUAL;
1105           break;
1106         default:
1107           event->crossing.detail = GDK_NOTIFY_UNKNOWN;
1108           break;
1109         }
1110
1111       event->crossing.focus = xevent->xcrossing.focus;
1112       event->crossing.state = xevent->xcrossing.state;
1113
1114       break;
1115
1116     case LeaveNotify:
1117       GDK_NOTE (EVENTS,
1118                 g_message ("leave notify:\t\twindow: %ld  detail: %d subwin: %ld",
1119                            xevent->xcrossing.window,
1120                            xevent->xcrossing.detail, xevent->xcrossing.subwindow));
1121
1122       if (window_private == NULL)
1123         {
1124           return_val = FALSE;
1125           break;
1126         }
1127
1128       /* Handle focusing (in the case where no window manager is running */
1129       if (window &&
1130           GDK_WINDOW_TYPE (window) != GDK_WINDOW_CHILD &&
1131           xevent->xcrossing.detail != NotifyInferior &&
1132           xevent->xcrossing.focus && !window_impl->has_focus)
1133         {
1134           gboolean had_focus = HAS_FOCUS (window_impl);
1135
1136           window_impl->has_pointer_focus = FALSE;
1137
1138           if (HAS_FOCUS (window_impl) != had_focus)
1139             generate_focus_event (window, FALSE);
1140         }
1141
1142       event->crossing.type = GDK_LEAVE_NOTIFY;
1143       event->crossing.window = window;
1144
1145       /* If the subwindow field of the XEvent is non-NULL, then
1146        *  lookup the corresponding GdkWindow.
1147        */
1148       if (xevent->xcrossing.subwindow != None)
1149         event->crossing.subwindow = gdk_window_lookup_for_display (display, xevent->xcrossing.subwindow);
1150       else
1151         event->crossing.subwindow = NULL;
1152
1153       event->crossing.time = xevent->xcrossing.time;
1154       event->crossing.x = xevent->xcrossing.x + xoffset;
1155       event->crossing.y = xevent->xcrossing.y + yoffset;
1156       event->crossing.x_root = xevent->xcrossing.x_root;
1157       event->crossing.y_root = xevent->xcrossing.y_root;
1158
1159       set_screen_from_root (display, event, xevent->xcrossing.root);
1160
1161       /* Translate the crossing mode into Gdk terms.
1162        */
1163       switch (xevent->xcrossing.mode)
1164         {
1165         case NotifyNormal:
1166           event->crossing.mode = GDK_CROSSING_NORMAL;
1167           break;
1168         case NotifyGrab:
1169           event->crossing.mode = GDK_CROSSING_GRAB;
1170           break;
1171         case NotifyUngrab:
1172           event->crossing.mode = GDK_CROSSING_UNGRAB;
1173           break;
1174         };
1175
1176       /* Translate the crossing detail into Gdk terms.
1177        */
1178       switch (xevent->xcrossing.detail)
1179         {
1180         case NotifyInferior:
1181           event->crossing.detail = GDK_NOTIFY_INFERIOR;
1182           break;
1183         case NotifyAncestor:
1184           event->crossing.detail = GDK_NOTIFY_ANCESTOR;
1185           break;
1186         case NotifyVirtual:
1187           event->crossing.detail = GDK_NOTIFY_VIRTUAL;
1188           break;
1189         case NotifyNonlinear:
1190           event->crossing.detail = GDK_NOTIFY_NONLINEAR;
1191           break;
1192         case NotifyNonlinearVirtual:
1193           event->crossing.detail = GDK_NOTIFY_NONLINEAR_VIRTUAL;
1194           break;
1195         default:
1196           event->crossing.detail = GDK_NOTIFY_UNKNOWN;
1197           break;
1198         }
1199
1200       event->crossing.focus = xevent->xcrossing.focus;
1201       event->crossing.state = xevent->xcrossing.state;
1202
1203       break;
1204
1205       /* We only care about focus events that indicate that _this_
1206        * window (not a ancestor or child) got or lost the focus
1207        */
1208     case FocusIn:
1209       GDK_NOTE (EVENTS,
1210                 g_message ("focus in:\t\twindow: %ld", xevent->xfocus.window));
1211
1212       if (window && GDK_WINDOW_TYPE (window) != GDK_WINDOW_CHILD)
1213         {
1214           gboolean had_focus = HAS_FOCUS (window_impl);
1215
1216           switch (xevent->xfocus.detail)
1217             {
1218             case NotifyAncestor:
1219             case NotifyNonlinear:
1220             case NotifyVirtual:
1221             case NotifyNonlinearVirtual:
1222               /* We pretend that the focus moves to the grab
1223                * window, so we pay attention to NotifyGrab
1224                * NotifyUngrab, and ignore NotifyWhileGrabbed
1225                */
1226               if (xevent->xfocus.mode != NotifyWhileGrabbed)
1227                 window_impl->has_focus = TRUE;
1228               break;
1229             case NotifyPointer:
1230               /* The X server sends NotifyPointer/NotifyGrab,
1231                * but the pointer focus is ignored while a
1232                * grab is in effect
1233                */
1234               if (xevent->xfocus.mode != NotifyGrab)
1235                 window_impl->has_pointer_focus = TRUE;
1236               break;
1237             case NotifyInferior:
1238             case NotifyPointerRoot:
1239             case NotifyDetailNone:
1240               break;
1241             }
1242
1243           if (HAS_FOCUS (window_impl) != had_focus)
1244             generate_focus_event (window, TRUE);
1245         }
1246       break;
1247     case FocusOut:
1248       GDK_NOTE (EVENTS,
1249                 g_message ("focus out:\t\twindow: %ld", xevent->xfocus.window));
1250
1251       if (window && GDK_WINDOW_TYPE (window) != GDK_WINDOW_CHILD)
1252         {
1253           gboolean had_focus = HAS_FOCUS (window_impl);
1254
1255           switch (xevent->xfocus.detail)
1256             {
1257             case NotifyAncestor:
1258             case NotifyNonlinear:
1259             case NotifyVirtual:
1260             case NotifyNonlinearVirtual:
1261               if (xevent->xfocus.mode != NotifyWhileGrabbed)
1262                 window_impl->has_focus = FALSE;
1263               break;
1264             case NotifyPointer:
1265               if (xevent->xfocus.mode != NotifyUngrab)
1266                 window_impl->has_pointer_focus = FALSE;
1267             break;
1268             case NotifyInferior:
1269             case NotifyPointerRoot:
1270             case NotifyDetailNone:
1271               break;
1272             }
1273
1274           if (HAS_FOCUS (window_impl) != had_focus)
1275             generate_focus_event (window, FALSE);
1276         }
1277       break;
1278
1279 #if 0
1280           /* gdk_keyboard_grab() causes following events. These events confuse
1281            * the XIM focus, so ignore them.
1282            */
1283           if (xevent->xfocus.mode == NotifyGrab ||
1284               xevent->xfocus.mode == NotifyUngrab)
1285             break;
1286 #endif
1287
1288     case KeymapNotify:
1289       GDK_NOTE (EVENTS,
1290                 g_message ("keymap notify"));
1291
1292       /* Not currently handled */
1293       return_val = FALSE;
1294       break;
1295
1296     case Expose:
1297       GDK_NOTE (EVENTS,
1298                 g_message ("expose:\t\twindow: %ld  %d  x,y: %d %d  w,h: %d %d%s",
1299                            xevent->xexpose.window, xevent->xexpose.count,
1300                            xevent->xexpose.x, xevent->xexpose.y,
1301                            xevent->xexpose.width, xevent->xexpose.height,
1302                            event->any.send_event ? " (send)" : ""));
1303
1304       if (window_private == NULL)
1305         {
1306           return_val = FALSE;
1307           break;
1308         }
1309
1310       {
1311         GdkRectangle expose_rect;
1312
1313         expose_rect.x = xevent->xexpose.x + xoffset;
1314         expose_rect.y = xevent->xexpose.y + yoffset;
1315         expose_rect.width = xevent->xexpose.width;
1316         expose_rect.height = xevent->xexpose.height;
1317
1318         if (return_exposes)
1319           {
1320             event->expose.type = GDK_EXPOSE;
1321             event->expose.area = expose_rect;
1322             event->expose.region = gdk_region_rectangle (&expose_rect);
1323             event->expose.window = window;
1324             event->expose.count = xevent->xexpose.count;
1325
1326             return_val = TRUE;
1327           }
1328         else
1329           {
1330             _gdk_window_process_expose (window, xevent->xexpose.serial, &expose_rect);
1331             return_val = FALSE;
1332           }
1333
1334         return_val = FALSE;
1335       }
1336
1337       break;
1338
1339     case GraphicsExpose:
1340       {
1341         GdkRectangle expose_rect;
1342
1343         GDK_NOTE (EVENTS,
1344                   g_message ("graphics expose:\tdrawable: %ld",
1345                              xevent->xgraphicsexpose.drawable));
1346
1347         if (window_private == NULL)
1348           {
1349             return_val = FALSE;
1350             break;
1351           }
1352
1353         expose_rect.x = xevent->xgraphicsexpose.x + xoffset;
1354         expose_rect.y = xevent->xgraphicsexpose.y + yoffset;
1355         expose_rect.width = xevent->xgraphicsexpose.width;
1356         expose_rect.height = xevent->xgraphicsexpose.height;
1357
1358         if (return_exposes)
1359           {
1360             event->expose.type = GDK_EXPOSE;
1361             event->expose.area = expose_rect;
1362             event->expose.region = gdk_region_rectangle (&expose_rect);
1363             event->expose.window = window;
1364             event->expose.count = xevent->xgraphicsexpose.count;
1365
1366             return_val = TRUE;
1367           }
1368         else
1369           {
1370             _gdk_window_process_expose (window, xevent->xgraphicsexpose.serial, &expose_rect);
1371
1372             return_val = FALSE;
1373           }
1374
1375       }
1376       break;
1377
1378     case NoExpose:
1379       GDK_NOTE (EVENTS,
1380                 g_message ("no expose:\t\tdrawable: %ld",
1381                            xevent->xnoexpose.drawable));
1382
1383       event->no_expose.type = GDK_NO_EXPOSE;
1384       event->no_expose.window = window;
1385
1386       break;
1387
1388     case VisibilityNotify:
1389 #ifdef G_ENABLE_DEBUG
1390       if (_gdk_debug_flags & GDK_DEBUG_EVENTS)
1391         switch (xevent->xvisibility.state)
1392           {
1393           case VisibilityFullyObscured:
1394             g_message ("visibility notify:\twindow: %ld  none",
1395                        xevent->xvisibility.window);
1396             break;
1397           case VisibilityPartiallyObscured:
1398             g_message ("visibility notify:\twindow: %ld  partial",
1399                        xevent->xvisibility.window);
1400             break;
1401           case VisibilityUnobscured:
1402             g_message ("visibility notify:\twindow: %ld  full",
1403                        xevent->xvisibility.window);
1404             break;
1405           }
1406 #endif /* G_ENABLE_DEBUG */
1407
1408       if (window_private == NULL)
1409         {
1410           return_val = FALSE;
1411           break;
1412         }
1413
1414       event->visibility.type = GDK_VISIBILITY_NOTIFY;
1415       event->visibility.window = window;
1416
1417       switch (xevent->xvisibility.state)
1418         {
1419         case VisibilityFullyObscured:
1420           event->visibility.state = GDK_VISIBILITY_FULLY_OBSCURED;
1421           break;
1422
1423         case VisibilityPartiallyObscured:
1424           event->visibility.state = GDK_VISIBILITY_PARTIAL;
1425           break;
1426
1427         case VisibilityUnobscured:
1428           event->visibility.state = GDK_VISIBILITY_UNOBSCURED;
1429           break;
1430         }
1431
1432       break;
1433
1434     case CreateNotify:
1435       GDK_NOTE (EVENTS,
1436                 g_message ("create notify:\twindow: %ld  x,y: %d %d     w,h: %d %d  b-w: %d  parent: %ld         ovr: %d",
1437                            xevent->xcreatewindow.window,
1438                            xevent->xcreatewindow.x,
1439                            xevent->xcreatewindow.y,
1440                            xevent->xcreatewindow.width,
1441                            xevent->xcreatewindow.height,
1442                            xevent->xcreatewindow.border_width,
1443                            xevent->xcreatewindow.parent,
1444                            xevent->xcreatewindow.override_redirect));
1445       /* not really handled */
1446       break;
1447
1448     case DestroyNotify:
1449       GDK_NOTE (EVENTS,
1450                 g_message ("destroy notify:\twindow: %ld",
1451                            xevent->xdestroywindow.window));
1452
1453       /* Ignore DestroyNotify from SubstructureNotifyMask */
1454       if (xevent->xdestroywindow.window == xevent->xdestroywindow.event)
1455         {
1456           event->any.type = GDK_DESTROY;
1457           event->any.window = window;
1458
1459           return_val = window_private && !GDK_WINDOW_DESTROYED (window);
1460
1461           if (window && GDK_WINDOW_XID (window) != screen_x11->xroot_window)
1462             gdk_window_destroy_notify (window);
1463         }
1464       else
1465         return_val = FALSE;
1466
1467       break;
1468
1469     case UnmapNotify:
1470       GDK_NOTE (EVENTS,
1471                 g_message ("unmap notify:\t\twindow: %ld",
1472                            xevent->xmap.window));
1473
1474       event->any.type = GDK_UNMAP;
1475       event->any.window = window;
1476
1477       /* If we are shown (not withdrawn) and get an unmap, it means we
1478        * were iconified in the X sense. If we are withdrawn, and get
1479        * an unmap, it means we hid the window ourselves, so we
1480        * will have already flipped the iconified bit off.
1481        */
1482       if (window)
1483         {
1484           if (GDK_WINDOW_IS_MAPPED (window))
1485             gdk_synthesize_window_state (window,
1486                                          0,
1487                                          GDK_WINDOW_STATE_ICONIFIED);
1488
1489           _gdk_xgrab_check_unmap (window, xevent->xany.serial);
1490         }
1491
1492       break;
1493
1494     case MapNotify:
1495       GDK_NOTE (EVENTS,
1496                 g_message ("map notify:\t\twindow: %ld",
1497                            xevent->xmap.window));
1498
1499       event->any.type = GDK_MAP;
1500       event->any.window = window;
1501
1502       /* Unset iconified if it was set */
1503       if (window && (((GdkWindowObject*)window)->state & GDK_WINDOW_STATE_ICONIFIED))
1504         gdk_synthesize_window_state (window,
1505                                      GDK_WINDOW_STATE_ICONIFIED,
1506                                      0);
1507
1508       break;
1509
1510     case ReparentNotify:
1511       GDK_NOTE (EVENTS,
1512                 g_message ("reparent notify:\twindow: %ld  x,y: %d %d  parent: %ld      ovr: %d",
1513                            xevent->xreparent.window,
1514                            xevent->xreparent.x,
1515                            xevent->xreparent.y,
1516                            xevent->xreparent.parent,
1517                            xevent->xreparent.override_redirect));
1518
1519       /* Not currently handled */
1520       return_val = FALSE;
1521       break;
1522
1523     case ConfigureNotify:
1524       GDK_NOTE (EVENTS,
1525                 g_message ("configure notify:\twindow: %ld  x,y: %d %d  w,h: %d %d  b-w: %d  above: %ld  ovr: %d%s",
1526                            xevent->xconfigure.window,
1527                            xevent->xconfigure.x,
1528                            xevent->xconfigure.y,
1529                            xevent->xconfigure.width,
1530                            xevent->xconfigure.height,
1531                            xevent->xconfigure.border_width,
1532                            xevent->xconfigure.above,
1533                            xevent->xconfigure.override_redirect,
1534                            !window
1535                            ? " (discarding)"
1536                            : GDK_WINDOW_TYPE (window) == GDK_WINDOW_CHILD
1537                            ? " (discarding child)"
1538                            : xevent->xconfigure.event != xevent->xconfigure.window
1539                            ? " (discarding substructure)"
1540                            : ""));
1541       if (window && GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT)
1542         _gdk_x11_screen_size_changed (screen, xevent);
1543
1544       if (window &&
1545           xevent->xconfigure.event == xevent->xconfigure.window &&
1546           !GDK_WINDOW_DESTROYED (window) &&
1547           (window_private->extension_events != 0))
1548         _gdk_input_configure_event (&xevent->xconfigure, window);
1549
1550       if (!window ||
1551           xevent->xconfigure.event != xevent->xconfigure.window ||
1552           GDK_WINDOW_TYPE (window) == GDK_WINDOW_CHILD ||
1553           GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT)
1554         return_val = FALSE;
1555       else
1556         {
1557           event->configure.type = GDK_CONFIGURE;
1558           event->configure.window = window;
1559           event->configure.width = xevent->xconfigure.width;
1560           event->configure.height = xevent->xconfigure.height;
1561
1562           if (!xevent->xconfigure.send_event &&
1563               !GDK_WINDOW_DESTROYED (window))
1564             {
1565               gint tx = 0;
1566               gint ty = 0;
1567               Window child_window = 0;
1568
1569               gdk_error_trap_push ();
1570               if (XTranslateCoordinates (GDK_DRAWABLE_XDISPLAY (window),
1571                                          GDK_DRAWABLE_XID (window),
1572                                          screen_x11->xroot_window,
1573                                          0, 0,
1574                                          &tx, &ty,
1575                                          &child_window))
1576                 {
1577                   if (!gdk_error_trap_pop ())
1578                     {
1579                       event->configure.x = tx;
1580                       event->configure.y = ty;
1581                     }
1582                 }
1583               else
1584                 gdk_error_trap_pop ();
1585             }
1586           else
1587             {
1588               event->configure.x = xevent->xconfigure.x;
1589               event->configure.y = xevent->xconfigure.y;
1590             }
1591           window_private->x = event->configure.x;
1592           window_private->y = event->configure.y;
1593           GDK_WINDOW_IMPL_X11 (window_private->impl)->width = xevent->xconfigure.width;
1594           GDK_WINDOW_IMPL_X11 (window_private->impl)->height = xevent->xconfigure.height;
1595           if (window_private->resize_count >= 1)
1596             {
1597               window_private->resize_count -= 1;
1598
1599               if (window_private->resize_count == 0)
1600                 _gdk_moveresize_configure_done (display, window);
1601             }
1602         }
1603       break;
1604
1605     case PropertyNotify:
1606       GDK_NOTE (EVENTS,
1607                 g_message ("property notify:\twindow: %ld, atom(%ld): %s%s%s",
1608                            xevent->xproperty.window,
1609                            xevent->xproperty.atom,
1610                            "\"",
1611                            gdk_x11_get_xatom_name_for_display (display, xevent->xproperty.atom),
1612                            "\""));
1613
1614       if (window_private == NULL)
1615         {
1616           return_val = FALSE;
1617           break;
1618         }
1619
1620       if (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE") ||
1621           xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP"))
1622         {
1623           /* If window state changed, then synthesize those events. */
1624           gdk_check_wm_state_changed (window);
1625         }
1626
1627       if (window_private->event_mask & GDK_PROPERTY_CHANGE_MASK)
1628         {
1629           event->property.type = GDK_PROPERTY_NOTIFY;
1630           event->property.window = window;
1631           event->property.atom = gdk_x11_xatom_to_atom_for_display (display, xevent->xproperty.atom);
1632           event->property.time = xevent->xproperty.time;
1633           event->property.state = xevent->xproperty.state;
1634         }
1635       else
1636         return_val = FALSE;
1637
1638       break;
1639
1640     case SelectionClear:
1641       GDK_NOTE (EVENTS,
1642                 g_message ("selection clear:\twindow: %ld",
1643                            xevent->xproperty.window));
1644
1645       if (_gdk_selection_filter_clear_event (&xevent->xselectionclear))
1646         {
1647           event->selection.type = GDK_SELECTION_CLEAR;
1648           event->selection.window = window;
1649           event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionclear.selection);
1650           event->selection.time = xevent->xselectionclear.time;
1651         }
1652       else
1653         return_val = FALSE;
1654
1655       break;
1656
1657     case SelectionRequest:
1658       GDK_NOTE (EVENTS,
1659                 g_message ("selection request:\twindow: %ld",
1660                            xevent->xproperty.window));
1661
1662       event->selection.type = GDK_SELECTION_REQUEST;
1663       event->selection.window = window;
1664       event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.selection);
1665       event->selection.target = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.target);
1666       event->selection.property = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.property);
1667       event->selection.requestor = xevent->xselectionrequest.requestor;
1668       event->selection.time = xevent->xselectionrequest.time;
1669
1670       break;
1671
1672     case SelectionNotify:
1673       GDK_NOTE (EVENTS,
1674                 g_message ("selection notify:\twindow: %ld",
1675                            xevent->xproperty.window));
1676
1677
1678       event->selection.type = GDK_SELECTION_NOTIFY;
1679       event->selection.window = window;
1680       event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.selection);
1681       event->selection.target = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.target);
1682       event->selection.property = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.property);
1683       event->selection.time = xevent->xselection.time;
1684
1685       break;
1686
1687     case ColormapNotify:
1688       GDK_NOTE (EVENTS,
1689                 g_message ("colormap notify:\twindow: %ld",
1690                            xevent->xcolormap.window));
1691
1692       /* Not currently handled */
1693       return_val = FALSE;
1694       break;
1695
1696     case ClientMessage:
1697       {
1698         GList *tmp_list;
1699         GdkFilterReturn result = GDK_FILTER_CONTINUE;
1700         GdkAtom message_type = gdk_x11_xatom_to_atom_for_display (display, xevent->xclient.message_type);
1701
1702         GDK_NOTE (EVENTS,
1703                   g_message ("client message:\twindow: %ld",
1704                              xevent->xclient.window));
1705
1706         tmp_list = display_x11->client_filters;
1707         while (tmp_list)
1708           {
1709             GdkClientFilter *filter = tmp_list->data;
1710             if (filter->type == message_type)
1711               {
1712                 result = (*filter->function) (xevent, event, filter->data);
1713                 break;
1714               }
1715
1716             tmp_list = tmp_list->next;
1717           }
1718
1719         switch (result)
1720           {
1721           case GDK_FILTER_REMOVE:
1722             return_val = FALSE;
1723             break;
1724           case GDK_FILTER_TRANSLATE:
1725             return_val = TRUE;
1726             break;
1727           case GDK_FILTER_CONTINUE:
1728             /* Send unknown ClientMessage's on to Gtk for it to use */
1729             if (window_private == NULL)
1730               {
1731                 return_val = FALSE;
1732               }
1733             else
1734               {
1735                 event->client.type = GDK_CLIENT_EVENT;
1736                 event->client.window = window;
1737                 event->client.message_type = message_type;
1738                 event->client.data_format = xevent->xclient.format;
1739                 memcpy(&event->client.data, &xevent->xclient.data,
1740                        sizeof(event->client.data));
1741               }
1742             break;
1743           }
1744       }
1745
1746       break;
1747
1748     case MappingNotify:
1749       GDK_NOTE (EVENTS,
1750                 g_message ("mapping notify"));
1751
1752       /* Let XLib know that there is a new keyboard mapping.
1753        */
1754       XRefreshKeyboardMapping (&xevent->xmapping);
1755       _gdk_keymap_keys_changed (display);
1756       return_val = FALSE;
1757       break;
1758
1759     default:
1760 #ifdef HAVE_XKB
1761       if (xevent->type == display_x11->xkb_event_type)
1762         {
1763           XkbEvent *xkb_event = (XkbEvent *)xevent;
1764
1765           switch (xkb_event->any.xkb_type)
1766             {
1767             case XkbMapNotify:
1768               _gdk_keymap_keys_changed (display);
1769
1770               return_val = FALSE;
1771               break;
1772
1773             case XkbStateNotify:
1774               _gdk_keymap_state_changed (display);
1775               break;
1776             }
1777         }
1778       else
1779 #endif
1780         {
1781           /* something else - (e.g., a Xinput event) */
1782
1783           if (window_private &&
1784               !GDK_WINDOW_DESTROYED (window_private) &&
1785               (window_private->extension_events != 0))
1786             return_val = _gdk_input_other_event(event, xevent, window);
1787           else
1788             return_val = FALSE;
1789
1790           break;
1791         }
1792     }
1793
1794  done:
1795   if (return_val)
1796     {
1797       if (event->any.window)
1798         g_object_ref (event->any.window);
1799       if (((event->any.type == GDK_ENTER_NOTIFY) ||
1800            (event->any.type == GDK_LEAVE_NOTIFY)) &&
1801           (event->crossing.subwindow != NULL))
1802         g_object_ref (event->crossing.subwindow);
1803     }
1804   else
1805     {
1806       /* Mark this event as having no resources to be freed */
1807       event->any.window = NULL;
1808       event->any.type = GDK_NOTHING;
1809     }
1810
1811   if (window)
1812     g_object_unref (window);
1813
1814   return return_val;
1815 }
1816
1817 static GdkFilterReturn
1818 gdk_wm_protocols_filter (GdkXEvent *xev,
1819                          GdkEvent  *event,
1820                          gpointer data)
1821 {
1822   XEvent *xevent = (XEvent *)xev;
1823   GdkWindow *win = event->any.window;
1824   GdkDisplay *display = GDK_WINDOW_DISPLAY (win);
1825
1826   if ((Atom) xevent->xclient.data.l[0] == gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW"))
1827     {
1828   /* The delete window request specifies a window
1829    *  to delete. We don't actually destroy the
1830    *  window because "it is only a request". (The
1831    *  window might contain vital data that the
1832    *  program does not want destroyed). Instead
1833    *  the event is passed along to the program,
1834    *  which should then destroy the window.
1835    */
1836       GDK_NOTE (EVENTS,
1837                 g_message ("delete window:\t\twindow: %ld",
1838                            xevent->xclient.window));
1839
1840       event->any.type = GDK_DELETE;
1841
1842       return GDK_FILTER_TRANSLATE;
1843     }
1844   else if ((Atom) xevent->xclient.data.l[0] == gdk_x11_get_xatom_by_name_for_display (display, "WM_TAKE_FOCUS"))
1845     {
1846       GdkWindow *win = event->any.window;
1847       Window focus_win = GDK_WINDOW_IMPL_X11(((GdkWindowObject *)win)->impl)->focus_window;
1848
1849       /* There is no way of knowing reliably whether we are viewable so we need
1850        * to trap errors so we don't cause a BadMatch.
1851        */
1852       gdk_error_trap_push ();
1853       XSetInputFocus (GDK_WINDOW_XDISPLAY (win),
1854                       focus_win,
1855                       RevertToParent,
1856                       xevent->xclient.data.l[1]);
1857       XSync (GDK_WINDOW_XDISPLAY (win), False);
1858       gdk_error_trap_pop ();
1859     }
1860   else if ((Atom) xevent->xclient.data.l[0] == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PING"))
1861     {
1862       XEvent xev = *xevent;
1863
1864       xev.xclient.window = GDK_WINDOW_XROOTWIN (win);
1865       XSendEvent (GDK_WINDOW_XDISPLAY (win),
1866                   xev.xclient.window,
1867                   False,
1868                   SubstructureRedirectMask | SubstructureNotifyMask, &xev);
1869     }
1870
1871   return GDK_FILTER_REMOVE;
1872 }
1873
1874 void
1875 _gdk_events_queue (GdkDisplay *display)
1876 {
1877   GList *node;
1878   GdkEvent *event;
1879   XEvent xevent;
1880   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
1881
1882   while (!_gdk_event_queue_find_first(display) && XPending (xdisplay))
1883     {
1884       XNextEvent (xdisplay, &xevent);
1885
1886       switch (xevent.type)
1887         {
1888         case KeyPress:
1889         case KeyRelease:
1890           break;
1891         default:
1892           if (XFilterEvent (&xevent, None))
1893             continue;
1894         }
1895
1896       event = gdk_event_new (GDK_NOTHING);
1897
1898       event->any.window = NULL;
1899       event->any.send_event = xevent.xany.send_event ? TRUE : FALSE;
1900
1901       ((GdkEventPrivate *)event)->flags |= GDK_EVENT_PENDING;
1902
1903       node = _gdk_event_queue_append (display, event);
1904
1905       if (gdk_event_translate (display, event, &xevent, FALSE))
1906         {
1907           ((GdkEventPrivate *)event)->flags &= ~GDK_EVENT_PENDING;
1908         }
1909       else
1910         {
1911           _gdk_event_queue_remove_link (display, node);
1912           g_list_free_1 (node);
1913           gdk_event_free (event);
1914         }
1915     }
1916 }
1917
1918 static gboolean
1919 gdk_event_prepare (GSource  *source,
1920                    gint     *timeout)
1921 {
1922   GdkDisplay *display = ((GdkDisplaySource*)source)->display;
1923   gboolean retval;
1924
1925   GDK_THREADS_ENTER ();
1926
1927   *timeout = -1;
1928   retval = (_gdk_event_queue_find_first (display) != NULL ||
1929             gdk_check_xpending (display));
1930
1931   GDK_THREADS_LEAVE ();
1932
1933   return retval;
1934 }
1935
1936 static gboolean
1937 gdk_event_check (GSource *source)
1938 {
1939   GdkDisplaySource *display_source = (GdkDisplaySource*)source;
1940   gboolean retval;
1941
1942   GDK_THREADS_ENTER ();
1943
1944   if (display_source->event_poll_fd.revents & G_IO_IN)
1945     retval = (_gdk_event_queue_find_first (display_source->display) != NULL ||
1946               gdk_check_xpending (display_source->display));
1947   else
1948     retval = FALSE;
1949
1950   GDK_THREADS_LEAVE ();
1951
1952   return retval;
1953 }
1954
1955 static gboolean
1956 gdk_event_dispatch (GSource    *source,
1957                     GSourceFunc callback,
1958                     gpointer    user_data)
1959 {
1960   GdkDisplay *display = ((GdkDisplaySource*)source)->display;
1961   GdkEvent *event;
1962
1963   GDK_THREADS_ENTER ();
1964
1965   _gdk_events_queue (display);
1966   event = _gdk_event_unqueue (display);
1967
1968   if (event)
1969     {
1970       if (_gdk_event_func)
1971         (*_gdk_event_func) (event, _gdk_event_data);
1972
1973       gdk_event_free (event);
1974     }
1975
1976   GDK_THREADS_LEAVE ();
1977
1978   return TRUE;
1979 }
1980
1981 /**
1982  * gdk_event_send_client_message_for_display:
1983  * @display: the #GdkDisplay for the window where the message is to be sent.
1984  * @event: the #GdkEvent to send, which should be a #GdkEventClient.
1985  * @winid: the window to send the X ClientMessage event to.
1986  *
1987  * Sends an X ClientMessage event to a given window.
1988  *
1989  * This could be used for communicating between different applications,
1990  * though the amount of data is limited to 20 bytes.
1991  *
1992  * Returns: non-zero on success.
1993  *
1994  * Since: 2.2
1995  */
1996 gboolean
1997 gdk_event_send_client_message_for_display (GdkDisplay     *display,
1998                                            GdkEvent       *event,
1999                                            GdkNativeWindow winid)
2000 {
2001   XEvent sev;
2002
2003   g_return_val_if_fail(event != NULL, FALSE);
2004
2005   /* Set up our event to send, with the exception of its target window */
2006   sev.xclient.type = ClientMessage;
2007   sev.xclient.display = GDK_DISPLAY_XDISPLAY (display);
2008   sev.xclient.format = event->client.data_format;
2009   sev.xclient.window = winid;
2010   memcpy(&sev.xclient.data, &event->client.data, sizeof (sev.xclient.data));
2011   sev.xclient.message_type = gdk_x11_atom_to_xatom_for_display (display, event->client.message_type);
2012
2013   return _gdk_send_xevent (display, winid, False, NoEventMask, &sev);
2014 }
2015
2016
2017
2018 /* Sends a ClientMessage to all toplevel client windows */
2019 gboolean
2020 gdk_event_send_client_message_to_all_recurse (GdkDisplay *display,
2021                                               XEvent     *xev,
2022                                               guint32     xid,
2023                                               guint       level)
2024 {
2025   Atom type = None;
2026   int format;
2027   unsigned long nitems, after;
2028   unsigned char *data;
2029   Window *ret_children, ret_root, ret_parent;
2030   unsigned int ret_nchildren;
2031   gboolean send = FALSE;
2032   gboolean found = FALSE;
2033   gboolean result = FALSE;
2034   int i;
2035
2036   gdk_error_trap_push ();
2037
2038   if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), xid,
2039                           gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE"),
2040                           0, 0, False, AnyPropertyType,
2041                           &type, &format, &nitems, &after, &data) != Success)
2042     goto out;
2043
2044   if (type)
2045     {
2046       send = TRUE;
2047       XFree (data);
2048     }
2049   else
2050     {
2051       /* OK, we're all set, now let's find some windows to send this to */
2052       if (!XQueryTree (GDK_DISPLAY_XDISPLAY (display), xid,
2053                       &ret_root, &ret_parent,
2054                       &ret_children, &ret_nchildren))
2055         goto out;
2056
2057       for(i = 0; i < ret_nchildren; i++)
2058         if (gdk_event_send_client_message_to_all_recurse (display, xev, ret_children[i], level + 1))
2059           found = TRUE;
2060
2061       XFree (ret_children);
2062     }
2063
2064   if (send || (!found && (level == 1)))
2065     {
2066       xev->xclient.window = xid;
2067       _gdk_send_xevent (display, xid, False, NoEventMask, xev);
2068     }
2069
2070   result = send || found;
2071
2072  out:
2073   gdk_error_trap_pop ();
2074
2075   return result;
2076 }
2077
2078 /**
2079  * gdk_screen_broadcast_client_message:
2080  * @screen: the #GdkScreen where the event will be broadcasted.
2081  * @event: the #GdkEvent.
2082  *
2083  * Sends an X ClientMessage event to all toplevel windows on @screen.
2084  *
2085  * Toplevel windows are determined by checking for the WM_STATE property,
2086  * as described in the Inter-Client Communication Conventions Manual (ICCCM).
2087  * If no windows are found with the WM_STATE property set, the message is
2088  * sent to all children of the root window.
2089  *
2090  * Since: 2.2
2091  */
2092
2093 void
2094 gdk_screen_broadcast_client_message (GdkScreen *screen,
2095                                      GdkEvent  *event)
2096 {
2097   XEvent sev;
2098   GdkWindow *root_window;
2099
2100   g_return_if_fail (event != NULL);
2101
2102   root_window = gdk_screen_get_root_window (screen);
2103
2104   /* Set up our event to send, with the exception of its target window */
2105   sev.xclient.type = ClientMessage;
2106   sev.xclient.display = GDK_WINDOW_XDISPLAY (root_window);
2107   sev.xclient.format = event->client.data_format;
2108   memcpy(&sev.xclient.data, &event->client.data, sizeof (sev.xclient.data));
2109   sev.xclient.message_type =
2110     gdk_x11_atom_to_xatom_for_display (GDK_WINDOW_DISPLAY (root_window),
2111                                        event->client.message_type);
2112
2113   gdk_event_send_client_message_to_all_recurse (gdk_screen_get_display (screen),
2114                                                 &sev,
2115                                                 GDK_WINDOW_XID (root_window),
2116                                                 0);
2117 }
2118
2119 /*
2120  *--------------------------------------------------------------
2121  * gdk_flush
2122  *
2123  *   Flushes the Xlib output buffer and then waits
2124  *   until all requests have been received and processed
2125  *   by the X server. The only real use for this function
2126  *   is in dealing with XShm.
2127  *
2128  * Arguments:
2129  *
2130  * Results:
2131  *
2132  * Side effects:
2133  *
2134  *--------------------------------------------------------------
2135  */
2136
2137 void
2138 gdk_flush (void)
2139 {
2140   GSList *tmp_list = _gdk_displays;
2141
2142   while (tmp_list)
2143     {
2144       XSync (GDK_DISPLAY_XDISPLAY (tmp_list->data), False);
2145       tmp_list = tmp_list->next;
2146     }
2147 }
2148
2149 static Bool
2150 timestamp_predicate (Display *display,
2151                      XEvent  *xevent,
2152                      XPointer arg)
2153 {
2154   Window xwindow = GPOINTER_TO_UINT (arg);
2155   GdkDisplay *gdk_display = gdk_x11_lookup_xdisplay (display);
2156
2157   if (xevent->type == PropertyNotify &&
2158       xevent->xproperty.window == xwindow &&
2159       xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display
2160       (gdk_display, "GDK_TIMESTAMP_PROP"))
2161     return True;
2162
2163   return False;
2164 }
2165
2166 /**
2167  * gdk_x11_get_server_time:
2168  * @window: a #GdkWindow, used for communication with the server.
2169  *          The window must have GDK_PROPERTY_CHANGE_MASK in its
2170  *          events mask or a hang will result.
2171  *
2172  * Routine to get the current X server time stamp.
2173  *
2174  * Return value: the time stamp.
2175  **/
2176 guint32
2177 gdk_x11_get_server_time (GdkWindow *window)
2178 {
2179   Display *xdisplay;
2180   Window   xwindow;
2181   guchar c = 'a';
2182   XEvent xevent;
2183   Atom timestamp_prop_atom;
2184
2185   g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
2186   g_return_val_if_fail (!GDK_WINDOW_DESTROYED (window), 0);
2187
2188   xdisplay = GDK_WINDOW_XDISPLAY (window);
2189   xwindow = GDK_WINDOW_XWINDOW (window);
2190   timestamp_prop_atom =
2191     gdk_x11_get_xatom_by_name_for_display (GDK_WINDOW_DISPLAY (window),
2192                                            "GDK_TIMESTAMP_PROP");
2193
2194   XChangeProperty (xdisplay, xwindow, timestamp_prop_atom,
2195                    timestamp_prop_atom,
2196                    8, PropModeReplace, &c, 1);
2197
2198   XIfEvent (xdisplay, &xevent,
2199             timestamp_predicate, GUINT_TO_POINTER(xwindow));
2200
2201   return xevent.xproperty.time;
2202 }
2203
2204 static void
2205 fetch_net_wm_check_window (GdkScreen *screen)
2206 {
2207   GdkScreenX11 *screen_x11;
2208   GdkDisplay *display;
2209   Atom type;
2210   gint format;
2211   gulong n_items;
2212   gulong bytes_after;
2213   Window *xwindow;
2214
2215   /* This function is very slow on every call if you are not running a
2216    * spec-supporting WM. For now not optimized, because it isn't in
2217    * any critical code paths, but if you used it somewhere that had to
2218    * be fast you want to avoid "GTK is slow with old WMs" complaints.
2219    * Probably at that point the function should be changed to query
2220    * _NET_SUPPORTING_WM_CHECK only once every 10 seconds or something.
2221    */
2222
2223   screen_x11 = GDK_SCREEN_X11 (screen);
2224   display = screen_x11->display;
2225
2226   if (screen_x11->wmspec_check_window != None)
2227     return; /* already have it */
2228
2229   XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), screen_x11->xroot_window,
2230                       gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTING_WM_CHECK"),
2231                       0, G_MAXLONG, False, XA_WINDOW, &type, &format,
2232                       &n_items, &bytes_after, (guchar **) & xwindow);
2233
2234   if (type != XA_WINDOW)
2235     return;
2236
2237   gdk_error_trap_push ();
2238
2239   /* Find out if this WM goes away, so we can reset everything. */
2240   XSelectInput (screen_x11->xdisplay, *xwindow, StructureNotifyMask);
2241
2242   screen_x11->wmspec_check_window = *xwindow;
2243   XFree (xwindow);
2244
2245   screen_x11->need_refetch_net_supported = TRUE;
2246   screen_x11->need_refetch_wm_name = TRUE;
2247
2248   /* Careful, reentrancy */
2249   _gdk_x11_screen_window_manager_changed (GDK_SCREEN (screen_x11));
2250 }
2251
2252 /**
2253  * gdk_x11_screen_get_window_manager_name:
2254  * @screen: a #GdkScreen
2255  *
2256  * Returns the name of the window manager for @screen.
2257  *
2258  * Return value: the name of the window manager screen @screen, or
2259  * "unknown" if the window manager is unknown. The string is owned by GDK
2260  * and should not be freed.
2261  *
2262  * Since: 2.2
2263  **/
2264 const char*
2265 gdk_x11_screen_get_window_manager_name (GdkScreen *screen)
2266 {
2267   GdkScreenX11 *screen_x11;
2268
2269   screen_x11 = GDK_SCREEN_X11 (screen);
2270
2271   fetch_net_wm_check_window (screen);
2272
2273   if (screen_x11->need_refetch_wm_name)
2274     {
2275       /* Get the name of the window manager */
2276       screen_x11->need_refetch_wm_name = FALSE;
2277
2278       g_free (screen_x11->window_manager_name);
2279       screen_x11->window_manager_name = g_strdup ("unknown");
2280
2281       if (screen_x11->wmspec_check_window != None)
2282         {
2283           Atom type;
2284           gint format;
2285           gulong n_items;
2286           gulong bytes_after;
2287           guchar *name;
2288
2289           name = NULL;
2290
2291           XGetWindowProperty (GDK_DISPLAY_XDISPLAY (screen_x11->display),
2292                               screen_x11->wmspec_check_window,
2293                               gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
2294                                                                      "_NET_WM_NAME"),
2295                               0, G_MAXLONG, False,
2296                               gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
2297                                                                      "UTF8_STRING"),
2298                               &type, &format,
2299                               &n_items, &bytes_after,
2300                               (guchar **)&name);
2301
2302           gdk_display_sync (screen_x11->display);
2303
2304           gdk_error_trap_pop ();
2305
2306           if (name != NULL)
2307             {
2308               g_free (screen_x11->window_manager_name);
2309               screen_x11->window_manager_name = g_strdup (name);
2310               XFree (name);
2311             }
2312         }
2313     }
2314
2315   return GDK_SCREEN_X11 (screen)->window_manager_name;
2316 }
2317
2318 typedef struct _NetWmSupportedAtoms NetWmSupportedAtoms;
2319
2320 struct _NetWmSupportedAtoms
2321 {
2322   Atom *atoms;
2323   gulong n_atoms;
2324 };
2325
2326 /**
2327  * gdk_x11_screen_supports_net_wm_hint:
2328  * @screen: the relevant #GdkScreen.
2329  * @property: a property atom.
2330  *
2331  * This function is specific to the X11 backend of GDK, and indicates
2332  * whether the window manager supports a certain hint from the
2333  * Extended Window Manager Hints Specification. You can find this
2334  * specification on
2335  * <ulink url="http://www.freedesktop.org">http://www.freedesktop.org</ulink>.
2336  *
2337  * When using this function, keep in mind that the window manager
2338  * can change over time; so you shouldn't use this function in
2339  * a way that impacts persistent application state. A common bug
2340  * is that your application can start up before the window manager
2341  * does when the user logs in, and before the window manager starts
2342  * gdk_x11_screen_supports_net_wm_hint() will return %FALSE for every property.
2343  * You can monitor the window_manager_changed signal on #GdkScreen to detect
2344  * a window manager change.
2345  *
2346  * Return value: %TRUE if the window manager supports @property
2347  *
2348  * Since: 2.2
2349  **/
2350 gboolean
2351 gdk_x11_screen_supports_net_wm_hint (GdkScreen *screen,
2352                                      GdkAtom    property)
2353 {
2354   gulong i;
2355   GdkScreenX11 *screen_x11;
2356   NetWmSupportedAtoms *supported_atoms;
2357   GdkDisplay *display;
2358
2359   g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
2360
2361   screen_x11 = GDK_SCREEN_X11 (screen);
2362   display = screen_x11->display;
2363
2364   supported_atoms = g_object_get_data (G_OBJECT (screen), "gdk-net-wm-supported-atoms");
2365   if (!supported_atoms)
2366     {
2367       supported_atoms = g_new0 (NetWmSupportedAtoms, 1);
2368       g_object_set_data (G_OBJECT (screen), "gdk-net-wm-supported-atoms", supported_atoms);
2369     }
2370
2371   fetch_net_wm_check_window (screen);
2372
2373   if (screen_x11->wmspec_check_window == None)
2374     return FALSE;
2375
2376   if (screen_x11->need_refetch_net_supported)
2377     {
2378       /* WM has changed since we last got the supported list,
2379        * refetch it.
2380        */
2381       Atom type;
2382       gint format;
2383       gulong bytes_after;
2384
2385       screen_x11->need_refetch_net_supported = FALSE;
2386
2387       if (supported_atoms->atoms)
2388         XFree (supported_atoms->atoms);
2389
2390       supported_atoms->atoms = NULL;
2391       supported_atoms->n_atoms = 0;
2392
2393       XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), screen_x11->xroot_window,
2394                           gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTED"),
2395                           0, G_MAXLONG, False, XA_ATOM, &type, &format,
2396                           &supported_atoms->n_atoms, &bytes_after,
2397                           (guchar **)&supported_atoms->atoms);
2398
2399       if (type != XA_ATOM)
2400         return FALSE;
2401     }
2402
2403   if (supported_atoms->atoms == NULL)
2404     return FALSE;
2405
2406   i = 0;
2407   while (i < supported_atoms->n_atoms)
2408     {
2409       if (supported_atoms->atoms[i] == gdk_x11_atom_to_xatom_for_display (display, property))
2410         return TRUE;
2411
2412       ++i;
2413     }
2414
2415   return FALSE;
2416 }
2417
2418 /**
2419  * gdk_net_wm_supports:
2420  * @property: a property atom.
2421  *
2422  * This function is specific to the X11 backend of GDK, and indicates
2423  * whether the window manager for the default screen supports a certain
2424  * hint from the Extended Window Manager Hints Specification. See
2425  * gdk_x11_screen_supports_net_wm_hint() for complete details.
2426  *
2427  * Return value: %TRUE if the window manager supports @property
2428  **/
2429 gboolean
2430 gdk_net_wm_supports (GdkAtom property)
2431 {
2432   return gdk_x11_screen_supports_net_wm_hint (gdk_screen_get_default (), property);
2433 }
2434
2435 static struct
2436 {
2437   const char *xsettings_name;
2438   const char *gdk_name;
2439 } settings_map[] = {
2440   { "Net/DoubleClickTime", "gtk-double-click-time" },
2441   { "Net/DndDragThreshold", "gtk-dnd-drag-threshold" },
2442   { "Gtk/CanChangeAccels", "gtk-can-change-accels" },
2443   { "Gtk/ColorPalette", "gtk-color-palette" },
2444   { "Gtk/FontName", "gtk-font-name" },
2445   { "Gtk/IconSizes", "gtk-icon-sizes" },
2446   { "Gtk/KeyThemeName", "gtk-key-theme-name" },
2447   { "Gtk/ToolbarStyle", "gtk-toolbar-style" },
2448   { "Gtk/ToolbarIconSize", "gtk-toolbar-icon-size" },
2449   { "Gtk/IMPreeditStyle", "gtk-im-preedit-style" },
2450   { "Gtk/IMStatusStyle", "gtk-im-status-style" },
2451   { "Net/CursorBlink", "gtk-cursor-blink" },
2452   { "Net/CursorBlinkTime", "gtk-cursor-blink-time" },
2453   { "Net/ThemeName", "gtk-theme-name" }
2454 };
2455
2456 static void
2457 gdk_xsettings_notify_cb (const char       *name,
2458                          XSettingsAction   action,
2459                          XSettingsSetting *setting,
2460                          void             *data)
2461 {
2462   GdkEvent new_event;
2463   GdkScreen *screen = data;
2464   GdkScreenX11 *screen_x11 = data;
2465   int i;
2466
2467   if (screen_x11->xsettings_in_init)
2468     return;
2469
2470   new_event.type = GDK_SETTING;
2471   new_event.setting.window = gdk_screen_get_root_window (screen);
2472   new_event.setting.send_event = FALSE;
2473   new_event.setting.name = NULL;
2474
2475   for (i = 0; i < G_N_ELEMENTS (settings_map) ; i++)
2476     if (strcmp (settings_map[i].xsettings_name, name) == 0)
2477       {
2478         new_event.setting.name = (char *)settings_map[i].gdk_name;
2479         break;
2480       }
2481
2482
2483   if (!new_event.setting.name)
2484     return;
2485
2486   switch (action)
2487     {
2488     case XSETTINGS_ACTION_NEW:
2489       new_event.setting.action = GDK_SETTING_ACTION_NEW;
2490       break;
2491     case XSETTINGS_ACTION_CHANGED:
2492       new_event.setting.action = GDK_SETTING_ACTION_CHANGED;
2493       break;
2494     case XSETTINGS_ACTION_DELETED:
2495       new_event.setting.action = GDK_SETTING_ACTION_DELETED;
2496       break;
2497     }
2498
2499   gdk_event_put (&new_event);
2500 }
2501
2502 static gboolean
2503 check_transform (const gchar *xsettings_name,
2504                  GType        src_type,
2505                  GType        dest_type)
2506 {
2507   if (!g_value_type_transformable (src_type, dest_type))
2508     {
2509       g_warning ("Cannot tranform xsetting %s of type %s to type %s\n",
2510                  xsettings_name,
2511                  g_type_name (src_type),
2512                  g_type_name (dest_type));
2513       return FALSE;
2514     }
2515   else
2516     return TRUE;
2517 }
2518
2519 /**
2520  * gdk_screen_get_setting:
2521  * @screen: the #GdkScreen where the setting is located
2522  * @name: the name of the setting
2523  * @value: location to store the value of the setting
2524  *
2525  * Retrieves a desktop-wide setting such as double-click time
2526  * for the #GdkScreen @screen.
2527  *
2528  * FIXME needs a list of valid settings here, or a link to
2529  * more information.
2530  *
2531  * Returns: %TRUE if the setting existed and a value was stored
2532  *   in @value, %FALSE otherwise.
2533  *
2534  * Since: 2.2
2535  **/
2536 gboolean
2537 gdk_screen_get_setting (GdkScreen   *screen,
2538                         const gchar *name,
2539                         GValue      *value)
2540 {
2541
2542   const char *xsettings_name = NULL;
2543   XSettingsResult result;
2544   XSettingsSetting *setting;
2545   GdkScreenX11 *screen_x11;
2546   gboolean success = FALSE;
2547   gint i;
2548   GValue tmp_val = { 0, };
2549
2550   g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
2551
2552   screen_x11 = GDK_SCREEN_X11 (screen);
2553
2554   for (i = 0; i < G_N_ELEMENTS (settings_map) ; i++)
2555     if (strcmp (settings_map[i].gdk_name, name) == 0)
2556       {
2557         xsettings_name = settings_map[i].xsettings_name;
2558         break;
2559       }
2560
2561   if (!xsettings_name)
2562     return FALSE;
2563
2564   result = xsettings_client_get_setting (screen_x11->xsettings_client,
2565                                          xsettings_name, &setting);
2566   if (result != XSETTINGS_SUCCESS)
2567     return FALSE;
2568
2569   switch (setting->type)
2570     {
2571     case XSETTINGS_TYPE_INT:
2572       if (check_transform (xsettings_name, G_TYPE_INT, G_VALUE_TYPE (value)))
2573         {
2574           g_value_init (&tmp_val, G_TYPE_INT);
2575           g_value_set_int (&tmp_val, setting->data.v_int);
2576           g_value_transform (&tmp_val, value);
2577
2578           success = TRUE;
2579         }
2580       break;
2581     case XSETTINGS_TYPE_STRING:
2582       if (check_transform (xsettings_name, G_TYPE_STRING, G_VALUE_TYPE (value)))
2583         {
2584           g_value_init (&tmp_val, G_TYPE_STRING);
2585           g_value_set_string (&tmp_val, setting->data.v_string);
2586           g_value_transform (&tmp_val, value);
2587
2588           success = TRUE;
2589         }
2590       break;
2591     case XSETTINGS_TYPE_COLOR:
2592       if (!check_transform (xsettings_name, GDK_TYPE_COLOR, G_VALUE_TYPE (value)))
2593         {
2594           GdkColor color;
2595
2596           g_value_init (&tmp_val, GDK_TYPE_COLOR);
2597
2598           color.pixel = 0;
2599           color.red = setting->data.v_color.red;
2600           color.green = setting->data.v_color.green;
2601           color.blue = setting->data.v_color.blue;
2602
2603           g_value_set_boxed (&tmp_val, &color);
2604
2605           g_value_transform (&tmp_val, value);
2606
2607           success = TRUE;
2608         }
2609       break;
2610     }
2611
2612   g_value_unset (&tmp_val);
2613
2614   xsettings_setting_free (setting);
2615
2616   return success;
2617 }
2618
2619 static GdkFilterReturn
2620 gdk_xsettings_client_event_filter (GdkXEvent *xevent,
2621                                    GdkEvent  *event,
2622                                    gpointer   data)
2623 {
2624   GdkScreenX11 *screen = data;
2625
2626   if (xsettings_client_process_event (screen->xsettings_client, (XEvent *)xevent))
2627     return GDK_FILTER_REMOVE;
2628   else
2629     return GDK_FILTER_CONTINUE;
2630 }
2631
2632 static void
2633 gdk_xsettings_watch_cb (Window   window,
2634                         Bool     is_start,
2635                         long     mask,
2636                         void    *cb_data)
2637 {
2638   GdkWindow *gdkwin;
2639   GdkScreen *screen = cb_data;
2640
2641   gdkwin = gdk_window_lookup_for_display (gdk_screen_get_display (screen), window);
2642
2643   if (is_start)
2644     {
2645       if (!gdkwin)
2646         gdkwin = gdk_window_foreign_new_for_display (gdk_screen_get_display (screen), window);
2647       else
2648         g_object_ref (gdkwin);
2649
2650       gdk_window_add_filter (gdkwin, gdk_xsettings_client_event_filter, screen);
2651     }
2652   else
2653     {
2654       g_assert (gdkwin);
2655       gdk_window_remove_filter (gdkwin, gdk_xsettings_client_event_filter, screen);
2656       g_object_unref (gdkwin);
2657     }
2658 }