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