openbox/event.c

   1 #include "debug.h"
   2 #include "openbox.h"
   3 #include "dock.h"
   4 #include "client.h"
   5 #include "xerror.h"
   6 #include "prop.h"
   7 #include "config.h"
   8 #include "screen.h"
   9 #include "frame.h"
  10 #include "menu.h"
  11 #include "framerender.h"
  12 #include "focus.h"
  13 #include "moveresize.h"
  14 #include "stacking.h"
  15 #include "extensions.h"
  16 #include "timer.h"
  17 #include "dispatch.h"
  18 #include "event.h"
  19
  20 #include <X11/Xlib.h>
  21 #include <X11/keysym.h>
  22 #include <X11/Xatom.h>
  23 #include <glib.h>
  24
  25 #ifdef USE_LIBSN
  26 #  include <libsn/sn.h>
  27 #endif
  28
  29 #ifdef HAVE_SYS_SELECT_H
  30 #  include <sys/select.h>
  31 #endif
  32 #ifdef HAVE_SIGNAL_H
  33 #  include <signal.h>
  34 #endif
  35
  36 #ifdef USE_SM
  37 #include <X11/ICE/ICElib.h>
  38 #endif
  39
  40 static void event_process(XEvent *e);
  41 static void event_handle_root(XEvent *e);
  42 static void event_handle_dock(ObDock *s, XEvent *e);
  43 static void event_handle_dockapp(ObDockApp *app, XEvent *e);
  44 static void event_handle_client(ObClient *c, XEvent *e);
  45 static void event_handle_menu(ObClient *c, XEvent *e);
  46 static void fd_event_handle();
  47 #ifdef USE_SM
  48 static void ice_watch(IceConn conn, IcePointer data, Bool opening,
  49                       IcePointer *watch_data);
  50 #endif
  51 static void find_max_fd();
  52
  53 #define INVALID_FOCUSIN(e) ((e)->xfocus.detail == NotifyInferior || \
  54                             (e)->xfocus.detail == NotifyAncestor || \
  55                             (e)->xfocus.detail > NotifyNonlinearVirtual)
  56 #define INVALID_FOCUSOUT(e) ((e)->xfocus.mode == NotifyGrab || \
  57                              (e)->xfocus.detail == NotifyInferior || \
  58                              (e)->xfocus.detail == NotifyAncestor || \
  59                              (e)->xfocus.detail > NotifyNonlinearVirtual)
  60
  61 Time event_lasttime = 0;
  62
  63 /*! The value of the mask for the NumLock modifier */
  64 unsigned int NumLockMask;
  65 /*! The value of the mask for the ScrollLock modifier */
  66 unsigned int ScrollLockMask;
  67 /*! The key codes for the modifier keys */
  68 static XModifierKeymap *modmap;
  69 /*! Table of the constant modifier masks */
  70 static const int mask_table[] = {
  71     ShiftMask, LockMask, ControlMask, Mod1Mask,
  72     Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
  73 };
  74 static int mask_table_size;
  75
  76 static fd_set selset, allset;
  77 #ifdef USE_SM
  78 static IceConn ice_conn;
  79 static int ice_fd;
  80 #endif
  81 static int max_fd, x_fd;
  82 static GData *fd_handler_list;
  83
  84
  85 #ifdef USE_SM
  86 static void ice_watch(IceConn conn, IcePointer data, Bool opening,
  87                       IcePointer *watch_data)
  88 {
  89     if (opening) {
  90         g_assert (ice_fd < 0);
  91         ice_conn = conn;
  92         ice_fd = IceConnectionNumber(conn);
  93         FD_SET(ice_fd, &allset);
  94     } else {
  95         FD_CLR(ice_fd, &allset);
  96         ice_fd = -1;
  97     }
  98     find_max_fd();
  99 }
 100 #endif
 101
 102 void event_startup()
 103 {
 104     mask_table_size = sizeof(mask_table) / sizeof(mask_table[0]);
 105
 106     /* get lock masks that are defined by the display (not constant) */
 107     modmap = XGetModifierMapping(ob_display);
 108     g_assert(modmap);
 109     if (modmap && modmap->max_keypermod > 0) {
 110         size_t cnt;
 111         const size_t size = mask_table_size * modmap->max_keypermod;
 112         /* get the values of the keyboard lock modifiers
 113            Note: Caps lock is not retrieved the same way as Scroll and Num
 114            lock since it doesn't need to be. */
 115         const KeyCode num_lock = XKeysymToKeycode(ob_display, XK_Num_Lock);
 116         const KeyCode scroll_lock = XKeysymToKeycode(ob_display,
 117                                                      XK_Scroll_Lock);
 118
 119         for (cnt = 0; cnt < size; ++cnt) {
 120             if (! modmap->modifiermap[cnt]) continue;
 121
 122             if (num_lock == modmap->modifiermap[cnt])
 123                 NumLockMask = mask_table[cnt / modmap->max_keypermod];
 124             if (scroll_lock == modmap->modifiermap[cnt])
 125                 ScrollLockMask = mask_table[cnt / modmap->max_keypermod];
 126         }
 127     }
 128
 129     FD_ZERO(&allset);
 130     max_fd = x_fd = ConnectionNumber(ob_display);
 131     FD_SET(x_fd, &allset);
 132
 133 #ifdef USE_SM
 134     ice_fd = -1;
 135     IceAddConnectionWatch(ice_watch, NULL);
 136 #endif
 137
 138     g_datalist_init(&fd_handler_list);
 139 }
 140
 141 void event_shutdown()
 142 {
 143     XFreeModifiermap(modmap);
 144     g_datalist_clear(&fd_handler_list);
 145 }
 146
 147 void event_loop()
 148 {
 149     XEvent e;
 150     struct timeval *wait;
 151     gboolean had_event = FALSE;
 152
 153     while (XPending(ob_display)) {
 154         XNextEvent(ob_display, &e);
 155
 156 #ifdef USE_LIBSN
 157         sn_display_process_event(ob_sn_display, &e);
 158 #endif
 159
 160         event_process(&e);
 161         had_event = TRUE;
 162     }
 163
 164     if (!had_event) {
 165         timer_dispatch((GTimeVal**)&wait);
 166         selset = allset;
 167         select(max_fd + 1, &selset, NULL, NULL, wait);
 168
 169         /* handle the X events as soon as possible? */
 170         if (FD_ISSET(x_fd, &selset))
 171             return;
 172
 173 #ifdef USE_SM
 174         if (ice_fd >= 0 && FD_ISSET(ice_fd, &selset)) {
 175             Bool b;
 176             IceProcessMessages(ice_conn, NULL, &b);
 177         }
 178 #endif
 179
 180         fd_event_handle();
 181     }
 182 }
 183
 184 static Window event_get_window(XEvent *e)
 185 {
 186     Window window;
 187
 188     /* pick a window */
 189     switch (e->type) {
 190     case SelectionClear:
 191         window = RootWindow(ob_display, ob_screen);
 192         break;
 193     case MapRequest:
 194         window = e->xmap.window;
 195         break;
 196     case UnmapNotify:
 197         window = e->xunmap.window;
 198         break;
 199     case DestroyNotify:
 200         window = e->xdestroywindow.window;
 201         break;
 202     case ConfigureRequest:
 203         window = e->xconfigurerequest.window;
 204         break;
 205     case ConfigureNotify:
 206         window = e->xconfigure.window;
 207         break;
 208     default:
 209 #ifdef XKB
 210         if (extensions_xkb && e->type == extensions_xkb_event_basep) {
 211             switch (((XkbAnyEvent*)&e)->xkb_type) {
 212             case XkbBellNotify:
 213                 window = ((XkbBellNotifyEvent*)&e)->window;
 214             default:
 215                 window = None;
 216             }
 217         } else
 218 #endif
 219             window = e->xany.window;
 220     }
 221     return window;
 222 }
 223
 224 static void event_set_lasttime(XEvent *e)
 225 {
 226     /* grab the lasttime and hack up the state */
 227     switch (e->type) {
 228     case ButtonPress:
 229     case ButtonRelease:
 230         event_lasttime = e->xbutton.time;
 231         break;
 232     case KeyPress:
 233         event_lasttime = e->xkey.time;
 234         break;
 235     case KeyRelease:
 236         event_lasttime = e->xkey.time;
 237         break;
 238     case MotionNotify:
 239         event_lasttime = e->xmotion.time;
 240         break;
 241     case PropertyNotify:
 242         event_lasttime = e->xproperty.time;
 243         break;
 244     case EnterNotify:
 245     case LeaveNotify:
 246         event_lasttime = e->xcrossing.time;
 247         break;
 248     default:
 249         event_lasttime = CurrentTime;
 250         break;
 251     }
 252 }
 253
 254 #define STRIP_MODS(s) \
 255         s &= ~(LockMask | NumLockMask | ScrollLockMask), \
 256         /* kill off the Button1Mask etc, only want the modifiers */ \
 257         s &= (ControlMask | ShiftMask | Mod1Mask | \
 258               Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask) \
 259
 260 static void event_hack_mods(XEvent *e)
 261 {
 262     KeyCode *kp;
 263     int i, k;
 264
 265     switch (e->type) {
 266     case ButtonPress:
 267     case ButtonRelease:
 268         STRIP_MODS(e->xbutton.state);
 269         break;
 270     case KeyPress:
 271         STRIP_MODS(e->xkey.state);
 272         break;
 273     case KeyRelease:
 274         STRIP_MODS(e->xkey.state);
 275         /* remove from the state the mask of the modifier being released, if
 276            it is a modifier key being released (this is a little ugly..) */
 277         kp = modmap->modifiermap;
 278         for (i = 0; i < mask_table_size; ++i) {
 279             for (k = 0; k < modmap->max_keypermod; ++k) {
 280                 if (*kp == e->xkey.keycode) { /* found the keycode */
 281                     /* remove the mask for it */
 282                     e->xkey.state &= ~mask_table[i];
 283                     /* cause the first loop to break; */
 284                     i = mask_table_size;
 285                     break; /* get outta here! */
 286                 }
 287                 ++kp;
 288             }
 289         }
 290         break;
 291     case MotionNotify:
 292         STRIP_MODS(e->xmotion.state);
 293         /* compress events */
 294         {
 295             XEvent ce;
 296             while (XCheckTypedWindowEvent(ob_display, e->xmotion.window,
 297                                           e->type, &ce)) {
 298                 e->xmotion.x_root = ce.xmotion.x_root;
 299                 e->xmotion.y_root = ce.xmotion.y_root;
 300             }
 301         }
 302         break;
 303     }
 304 }
 305
 306 static gboolean event_ignore(XEvent *e, ObClient *client)
 307 {
 308     switch(e->type) {
 309     case FocusIn:
 310         /* NotifyAncestor is not ignored in FocusIn like it is in FocusOut
 311            because of RevertToPointerRoot. If the focus ends up reverting to
 312            pointer root on a workspace change, then the FocusIn event that we
 313            want will be of type NotifyAncestor. This situation does not occur
 314            for FocusOut, so it is safely ignored there.
 315         */
 316         if (INVALID_FOCUSIN(e) ||
 317             client == NULL) {
 318 #ifdef DEBUG_FOCUS
 319         ob_debug("FocusIn on %lx mode %d detail %d IGNORED\n",
 320                  e->xfocus.window, e->xfocus.mode, e->xfocus.detail);
 321 #endif
 322             /* says a client was not found for the event (or a valid FocusIn
 323                event was not found.
 324             */
 325             e->xfocus.window = None;
 326             return TRUE;
 327         }
 328
 329 #ifdef DEBUG_FOCUS
 330         ob_debug("FocusIn on %lx mode %d detail %d\n", e->xfocus.window,
 331                  e->xfocus.mode, e->xfocus.detail);
 332 #endif
 333         break;
 334     case FocusOut:
 335         if (INVALID_FOCUSOUT(e)) {
 336 #ifdef DEBUG_FOCUS
 337         ob_debug("FocusOut on %lx mode %d detail %d IGNORED\n",
 338                  e->xfocus.window, e->xfocus.mode, e->xfocus.detail);
 339 #endif
 340             return TRUE;
 341         }
 342
 343 #ifdef DEBUG_FOCUS
 344         ob_debug("FocusOut on %lx mode %d detail %d\n",
 345                  e->xfocus.window, e->xfocus.mode, e->xfocus.detail);
 346 #endif
 347
 348         {
 349             XEvent fe;
 350             gboolean fallback = TRUE;
 351
 352             while (TRUE) {
 353                 if (!XCheckTypedWindowEvent(ob_display, FocusOut,
 354                                             e->xfocus.window,&fe))
 355                     if (!XCheckTypedEvent(ob_display, FocusIn, &fe))
 356                         break;
 357                 if (fe.type == FocusOut) {
 358 #ifdef DEBUG_FOCUS
 359                     ob_debug("found pending FocusOut");
 360 #endif
 361                     if (!INVALID_FOCUSOUT(&fe)) {
 362                         /* if there is a VALID FocusOut still coming, don't
 363                            fallback focus yet, we'll deal with it then */
 364                         XPutBackEvent(ob_display, &fe);
 365                         fallback = FALSE;
 366                         break;
 367                     }
 368                 } else {
 369 #ifdef DEBUG_FOCUS
 370                     ob_debug("found pending FocusIn");
 371 #endif
 372                     /* is the focused window getting a FocusOut/In back to
 373                        itself?
 374                     */
 375                     if (fe.xfocus.window == e->xfocus.window &&
 376                         !event_ignore(&fe, client)) {
 377                         /*
 378                           if focus_client is not set, then we can't do
 379                           this. we need the FocusIn. This happens in the
 380                           case when the set_focus_client(NULL) in the
 381                           focus_fallback function fires and then
 382                           focus_fallback picks the currently focused
 383                           window (such as on a SendToDesktop-esque action.
 384                         */
 385                         if (focus_client) {
 386 #ifdef DEBUG_FOCUS
 387                             ob_debug("focused window got an Out/In back to "
 388                                      "itself IGNORED both");
 389 #endif
 390                             return TRUE;
 391                         } else {
 392                             event_process(&fe);
 393 #ifdef DEBUG_FOCUS
 394                             ob_debug("focused window got an Out/In back to "
 395                                      "itself but focus_client was null "
 396                                      "IGNORED just the Out");
 397 #endif
 398                             return TRUE;
 399                         }
 400                     }
 401
 402                     /* once all the FocusOut's have been dealt with, if there
 403                        is a FocusIn still left and it is valid, then use it */
 404                     event_process(&fe);
 405                     /* secret magic way of event_process telling us that no
 406                        client was found for the FocusIn event. ^_^ */
 407                     if (fe.xfocus.window != None) {
 408                         fallback = FALSE;
 409                         break;
 410                     }
 411                 }
 412             }
 413             if (fallback) {
 414 #ifdef DEBUG_FOCUS
 415                 ob_debug("no valid FocusIn and no FocusOut events found, "
 416                          "falling back");
 417 #endif
 418                 focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 419             }
 420         }
 421         break;
 422     case EnterNotify:
 423     case LeaveNotify:
 424         /* NotifyUngrab occurs when a mouse button is released and the event is
 425            caused, like when lowering a window */
 426         /* NotifyVirtual occurs when ungrabbing the pointer */
 427         if (e->xcrossing.mode == NotifyGrab ||
 428             e->xcrossing.detail == NotifyInferior ||
 429             (e->xcrossing.mode == NotifyUngrab &&
 430              e->xcrossing.detail == NotifyVirtual)) {
 431 #ifdef DEBUG_FOCUS
 432             ob_debug("%sNotify mode %d detail %d on %lx IGNORED",
 433                      (e->type == EnterNotify ? "Enter" : "Leave"),
 434                      e->xcrossing.mode,
 435                      e->xcrossing.detail, client?client->window:0);
 436 #endif
 437             return TRUE;
 438         }
 439 #ifdef DEBUG_FOCUS
 440         ob_debug("%sNotify mode %d detail %d on %lx",
 441                  (e->type == EnterNotify ? "Enter" : "Leave"),
 442                  e->xcrossing.mode,
 443                  e->xcrossing.detail, client?client->window:0);
 444 #endif
 445         break;
 446     }
 447     return FALSE;
 448 }
 449
 450 static void event_process(XEvent *e)
 451 {
 452     Window window;
 453     ObClient *client = NULL;
 454     ObDock *dock = NULL;
 455     ObDockApp *dockapp = NULL;
 456     ObMenu *menu = NULL;
 457     ObWindow *obwin = NULL;
 458
 459     window = event_get_window(e);
 460     if ((obwin = g_hash_table_lookup(window_map, &window))) {
 461         switch (obwin->type) {
 462         case Window_Dock:
 463             dock = WINDOW_AS_DOCK(obwin);
 464             break;
 465         case Window_DockApp:
 466             dockapp = WINDOW_AS_DOCKAPP(obwin);
 467             break;
 468         case Window_Menu:
 469             menu = WINDOW_AS_MENU(obwin);
 470             break;
 471         case Window_Client:
 472             client = WINDOW_AS_CLIENT(obwin);
 473             break;
 474         case Window_Internal:
 475             /* not to be used for events */
 476             g_assert_not_reached();
 477             break;
 478         }
 479     }
 480
 481     event_set_lasttime(e);
 482     event_hack_mods(e);
 483     if (event_ignore(e, client))
 484         return;
 485
 486     /* deal with it in the kernel */
 487     if (client)
 488         event_handle_client(client, e);
 489     else if (dockapp)
 490         event_handle_dockapp(dockapp, e);
 491     else if (dock)
 492         event_handle_dock(dock, e);
 493     else if (window == RootWindow(ob_display, ob_screen))
 494         event_handle_root(e);
 495     else if (e->type == MapRequest)
 496         client_manage(window);
 497     else if (e->type == ConfigureRequest) {
 498         /* unhandled configure requests must be used to configure the
 499            window directly */
 500         XWindowChanges xwc;
 501
 502         xwc.x = e->xconfigurerequest.x;
 503         xwc.y = e->xconfigurerequest.y;
 504         xwc.width = e->xconfigurerequest.width;
 505         xwc.height = e->xconfigurerequest.height;
 506         xwc.border_width = e->xconfigurerequest.border_width;
 507         xwc.sibling = e->xconfigurerequest.above;
 508         xwc.stack_mode = e->xconfigurerequest.detail;
 509
 510         /* we are not to be held responsible if someone sends us an
 511            invalid request! */
 512         xerror_set_ignore(TRUE);
 513         XConfigureWindow(ob_display, window,
 514                          e->xconfigurerequest.value_mask, &xwc);
 515         xerror_set_ignore(FALSE);
 516     }
 517
 518     if (menu_visible)
 519         if (e->type == MotionNotify || e->type == ButtonRelease ||
 520             e->type == ButtonPress ||
 521             e->type == KeyPress || e->type == KeyRelease) {
 522             event_handle_menu(client, e);
 523
 524             return; /* no dispatch! */
 525         }
 526
 527     if (moveresize_in_progress)
 528         if (e->type == MotionNotify || e->type == ButtonRelease ||
 529             e->type == ButtonPress ||
 530             e->type == KeyPress || e->type == KeyRelease) {
 531             moveresize_event(e);
 532
 533             return; /* no dispatch! */
 534
 535         }
 536
 537     /* user input (action-bound) events */
 538     /*
 539     if (e->type == ButtonPress || e->type == ButtonRelease ||
 540         e->type == MotionNotify)
 541         mouse_event(e, client);
 542     else if (e->type == KeyPress || e->type == KeyRelease)
 543         ;
 544     */
 545
 546     /* dispatch the event to registered handlers */
 547     dispatch_x(e, client);
 548 }
 549
 550 static void event_handle_root(XEvent *e)
 551 {
 552     Atom msgtype;
 553
 554     switch(e->type) {
 555     case SelectionClear:
 556         ob_debug("Another WM has requested to replace us. Exiting.\n");
 557         ob_exit();
 558         break;
 559
 560     case ClientMessage:
 561         if (e->xclient.format != 32) break;
 562
 563         msgtype = e->xclient.message_type;
 564         if (msgtype == prop_atoms.net_current_desktop) {
 565             unsigned int d = e->xclient.data.l[0];
 566             if (d < screen_num_desktops)
 567                 screen_set_desktop(d);
 568         } else if (msgtype == prop_atoms.net_number_of_desktops) {
 569             unsigned int d = e->xclient.data.l[0];
 570             if (d > 0)
 571                 screen_set_num_desktops(d);
 572         } else if (msgtype == prop_atoms.net_showing_desktop) {
 573             screen_show_desktop(e->xclient.data.l[0] != 0);
 574         }
 575         break;
 576     case PropertyNotify:
 577         if (e->xproperty.atom == prop_atoms.net_desktop_names)
 578             screen_update_desktop_names();
 579         else if (e->xproperty.atom == prop_atoms.net_desktop_layout)
 580             screen_update_layout();
 581         break;
 582     case ConfigureNotify:
 583 #ifdef XRANDR
 584         XRRUpdateConfiguration(e);
 585 #endif
 586         screen_resize();
 587         break;
 588     default:
 589         ;
 590 #ifdef VIDMODE
 591         if (extensions_vidmode && e->type == extensions_vidmode_event_basep) {
 592             ob_debug("VIDMODE EVENT\n");
 593         }
 594 #endif
 595     }
 596 }
 597
 598 static void event_handle_client(ObClient *client, XEvent *e)
 599 {
 600     XEvent ce;
 601     Atom msgtype;
 602     int i=0;
 603     ObFrameContext con;
 604
 605     switch (e->type) {
 606     case ButtonPress:
 607     case ButtonRelease:
 608         /* Wheel buttons don't draw because they are an instant click, so it
 609            is a waste of resources to go drawing it. */
 610         if (!(e->xbutton.button == 4 || e->xbutton.button == 5)) {
 611             switch (frame_context(client, e->xbutton.window)) {
 612             case OB_FRAME_CONTEXT_MAXIMIZE:
 613                 client->frame->max_press = (e->type == ButtonPress);
 614                 framerender_frame(client->frame);
 615                 break;
 616             case OB_FRAME_CONTEXT_CLOSE:
 617                 client->frame->close_press = (e->type == ButtonPress);
 618                 framerender_frame(client->frame);
 619                 break;
 620             case OB_FRAME_CONTEXT_ICONIFY:
 621                 client->frame->iconify_press = (e->type == ButtonPress);
 622                 framerender_frame(client->frame);
 623                 break;
 624             case OB_FRAME_CONTEXT_ALLDESKTOPS:
 625                 client->frame->desk_press = (e->type == ButtonPress);
 626                 framerender_frame(client->frame);
 627                 break;
 628             case OB_FRAME_CONTEXT_SHADE:
 629                 client->frame->shade_press = (e->type == ButtonPress);
 630                 framerender_frame(client->frame);
 631                 break;
 632             default:
 633                 /* nothing changes with clicks for any other contexts */
 634                 break;
 635             }
 636         }
 637         break;
 638     case FocusIn:
 639 #ifdef DEBUG_FOCUS
 640         ob_debug("FocusIn on client for %lx\n", client->window);
 641 #endif
 642         if (client != focus_client) {
 643             focus_set_client(client);
 644             frame_adjust_focus(client->frame, TRUE);
 645         }
 646         break;
 647     case FocusOut:
 648 #ifdef DEBUG_FOCUS
 649         ob_debug("FocusOut on client for %lx\n", client->window);
 650 #endif
 651         /* are we a fullscreen window or a transient of one? (checks layer)
 652            if we are then we need to be iconified since we are losing focus
 653          */
 654         if (client->layer == OB_STACKING_LAYER_FULLSCREEN && !client->iconic &&
 655             !client_search_focus_tree_full(client))
 656             /* iconify fullscreen windows when they and their transients
 657                aren't focused */
 658             client_iconify(client, TRUE, TRUE);
 659         frame_adjust_focus(client->frame, FALSE);
 660         break;
 661     case LeaveNotify:
 662         con = frame_context(client, e->xcrossing.window);
 663         switch (con) {
 664         case OB_FRAME_CONTEXT_MAXIMIZE:
 665             client->frame->max_hover = FALSE;
 666             frame_adjust_state(client->frame);
 667             break;
 668         case OB_FRAME_CONTEXT_ALLDESKTOPS:
 669             client->frame->desk_hover = FALSE;
 670             frame_adjust_state(client->frame);
 671             break;
 672         case OB_FRAME_CONTEXT_SHADE:
 673             client->frame->shade_hover = FALSE;
 674             frame_adjust_state(client->frame);
 675             break;
 676         case OB_FRAME_CONTEXT_ICONIFY:
 677             client->frame->iconify_hover = FALSE;
 678             frame_adjust_state(client->frame);
 679             break;
 680         case OB_FRAME_CONTEXT_CLOSE:
 681             client->frame->close_hover = FALSE;
 682             frame_adjust_state(client->frame);
 683             break;
 684         default:
 685             break;
 686         }
 687         break;
 688     case EnterNotify:
 689         con = frame_context(client, e->xcrossing.window);
 690         switch (con) {
 691         case OB_FRAME_CONTEXT_MAXIMIZE:
 692             client->frame->max_hover = TRUE;
 693             frame_adjust_state(client->frame);
 694             break;
 695         case OB_FRAME_CONTEXT_ALLDESKTOPS:
 696             client->frame->desk_hover = TRUE;
 697             frame_adjust_state(client->frame);
 698             break;
 699         case OB_FRAME_CONTEXT_SHADE:
 700             client->frame->shade_hover = TRUE;
 701             frame_adjust_state(client->frame);
 702             break;
 703         case OB_FRAME_CONTEXT_ICONIFY:
 704             client->frame->iconify_hover = TRUE;
 705             frame_adjust_state(client->frame);
 706             break;
 707         case OB_FRAME_CONTEXT_CLOSE:
 708             client->frame->close_hover = TRUE;
 709             frame_adjust_state(client->frame);
 710             break;
 711         case OB_FRAME_CONTEXT_FRAME:
 712             if (client_normal(client)) {
 713                 if (ob_state() == OB_STATE_STARTING) {
 714                     /* move it to the top of the focus order */
 715                     guint desktop = client->desktop;
 716                     if (desktop == DESKTOP_ALL) desktop = screen_desktop;
 717                     focus_order[desktop] = g_list_remove(focus_order[desktop],
 718                                                          client);
 719                     focus_order[desktop] = g_list_prepend(focus_order[desktop],
 720                                                           client);
 721                 } else if (config_focus_follow) {
 722 #ifdef DEBUG_FOCUS
 723                     ob_debug("EnterNotify on %lx, focusing window\n",
 724                              client->window);
 725 #endif
 726                     client_focus(client);
 727                 }
 728             }
 729             break;
 730         default:
 731             break;
 732         }
 733         break;
 734     case ConfigureRequest:
 735         /* compress these */
 736         while (XCheckTypedWindowEvent(ob_display, client->window,
 737                                       ConfigureRequest, &ce)) {
 738             ++i;
 739             /* XXX if this causes bad things.. we can compress config req's
 740                with the same mask. */
 741             e->xconfigurerequest.value_mask |=
 742                 ce.xconfigurerequest.value_mask;
 743             if (ce.xconfigurerequest.value_mask & CWX)
 744                 e->xconfigurerequest.x = ce.xconfigurerequest.x;
 745             if (ce.xconfigurerequest.value_mask & CWY)
 746                 e->xconfigurerequest.y = ce.xconfigurerequest.y;
 747             if (ce.xconfigurerequest.value_mask & CWWidth)
 748                 e->xconfigurerequest.width = ce.xconfigurerequest.width;
 749             if (ce.xconfigurerequest.value_mask & CWHeight)
 750                 e->xconfigurerequest.height = ce.xconfigurerequest.height;
 751             if (ce.xconfigurerequest.value_mask & CWBorderWidth)
 752                 e->xconfigurerequest.border_width =
 753                     ce.xconfigurerequest.border_width;
 754             if (ce.xconfigurerequest.value_mask & CWStackMode)
 755                 e->xconfigurerequest.detail = ce.xconfigurerequest.detail;
 756         }
 757
 758         /* if we are iconic (or shaded (fvwm does this)) ignore the event */
 759         if (client->iconic || client->shaded) return;
 760
 761         if (e->xconfigurerequest.value_mask & CWBorderWidth)
 762             client->border_width = e->xconfigurerequest.border_width;
 763
 764         /* resize, then move, as specified in the EWMH section 7.7 */
 765         if (e->xconfigurerequest.value_mask & (CWWidth | CWHeight |
 766                                                CWX | CWY)) {
 767             int x, y, w, h;
 768             ObCorner corner;
 769
 770             x = (e->xconfigurerequest.value_mask & CWX) ?
 771                 e->xconfigurerequest.x : client->area.x;
 772             y = (e->xconfigurerequest.value_mask & CWY) ?
 773                 e->xconfigurerequest.y : client->area.y;
 774             w = (e->xconfigurerequest.value_mask & CWWidth) ?
 775                 e->xconfigurerequest.width : client->area.width;
 776             h = (e->xconfigurerequest.value_mask & CWHeight) ?
 777                 e->xconfigurerequest.height : client->area.height;
 778
 779             if (!(client->strut.left || client->strut.right ||
 780                   client->strut.top || client->strut.bottom)) {
 781                 int newx = x;
 782                 int newy = y;
 783                 client_find_onscreen(client, &newx, &newy, w, h, TRUE);
 784                 if (e->xconfigurerequest.value_mask & CWX)
 785                     x = newx;
 786                 if (e->xconfigurerequest.value_mask & CWY)
 787                     y = newy;
 788             }
 789
 790             switch (client->gravity) {
 791             case NorthEastGravity:
 792             case EastGravity:
 793                 corner = OB_CORNER_TOPRIGHT;
 794                 break;
 795             case SouthWestGravity:
 796             case SouthGravity:
 797                 corner = OB_CORNER_BOTTOMLEFT;
 798                 break;
 799             case SouthEastGravity:
 800                 corner = OB_CORNER_BOTTOMRIGHT;
 801                 break;
 802             default:     /* NorthWest, Static, etc */
 803                 corner = OB_CORNER_TOPLEFT;
 804             }
 805
 806             client_configure(client, corner, x, y, w, h, FALSE, TRUE);
 807         }
 808
 809         if (e->xconfigurerequest.value_mask & CWStackMode) {
 810             switch (e->xconfigurerequest.detail) {
 811             case Below:
 812             case BottomIf:
 813                 stacking_lower(CLIENT_AS_WINDOW(client));
 814                 break;
 815
 816             case Above:
 817             case TopIf:
 818             default:
 819                 stacking_raise(CLIENT_AS_WINDOW(client));
 820                 break;
 821             }
 822         }
 823         break;
 824     case UnmapNotify:
 825         if (client->ignore_unmaps) {
 826             client->ignore_unmaps--;
 827             break;
 828         }
 829         client_unmanage(client);
 830         break;
 831     case DestroyNotify:
 832         client_unmanage(client);
 833         break;
 834     case ReparentNotify:
 835         /* this is when the client is first taken captive in the frame */
 836         if (e->xreparent.parent == client->frame->plate) break;
 837
 838         /*
 839           This event is quite rare and is usually handled in unmapHandler.
 840           However, if the window is unmapped when the reparent event occurs,
 841           the window manager never sees it because an unmap event is not sent
 842           to an already unmapped window.
 843         */
 844
 845         /* we don't want the reparent event, put it back on the stack for the
 846            X server to deal with after we unmanage the window */
 847         XPutBackEvent(ob_display, e);
 848
 849         client_unmanage(client);
 850         break;
 851     case MapRequest:
 852         ob_debug("MapRequest for 0x%lx\n", client->window);
 853         if (!client->iconic) break; /* this normally doesn't happen, but if it
 854                                        does, we don't want it! */
 855         if (screen_showing_desktop)
 856             screen_show_desktop(FALSE);
 857         client_iconify(client, FALSE, TRUE);
 858         if (!client->frame->visible)
 859             /* if its not visible still, then don't mess with it */
 860             break;
 861         if (client->shaded)
 862             client_shade(client, FALSE);
 863         client_focus(client);
 864         stacking_raise(CLIENT_AS_WINDOW(client));
 865         break;
 866     case ClientMessage:
 867         /* validate cuz we query stuff off the client here */
 868         if (!client_validate(client)) break;
 869
 870         if (e->xclient.format != 32) return;
 871
 872         msgtype = e->xclient.message_type;
 873         if (msgtype == prop_atoms.wm_change_state) {
 874             /* compress changes into a single change */
 875             while (XCheckTypedWindowEvent(ob_display, e->type,
 876                                           client->window, &ce)) {
 877                 /* XXX: it would be nice to compress ALL messages of a
 878                    type, not just messages in a row without other
 879                    message types between. */
 880                 if (ce.xclient.message_type != msgtype) {
 881                     XPutBackEvent(ob_display, &ce);
 882                     break;
 883                 }
 884                 e->xclient = ce.xclient;
 885             }
 886             client_set_wm_state(client, e->xclient.data.l[0]);
 887         } else if (msgtype == prop_atoms.net_wm_desktop) {
 888             /* compress changes into a single change */
 889             while (XCheckTypedWindowEvent(ob_display, e->type,
 890                                           client->window, &ce)) {
 891                 /* XXX: it would be nice to compress ALL messages of a
 892                    type, not just messages in a row without other
 893                    message types between. */
 894                 if (ce.xclient.message_type != msgtype) {
 895                     XPutBackEvent(ob_display, &ce);
 896                     break;
 897                 }
 898                 e->xclient = ce.xclient;
 899             }
 900             if ((unsigned)e->xclient.data.l[0] < screen_num_desktops ||
 901                 (unsigned)e->xclient.data.l[0] == DESKTOP_ALL)
 902                 client_set_desktop(client, (unsigned)e->xclient.data.l[0],
 903                                    FALSE);
 904         } else if (msgtype == prop_atoms.net_wm_state) {
 905             /* can't compress these */
 906             ob_debug("net_wm_state %s %ld %ld for 0x%lx\n",
 907                      (e->xclient.data.l[0] == 0 ? "Remove" :
 908                       e->xclient.data.l[0] == 1 ? "Add" :
 909                       e->xclient.data.l[0] == 2 ? "Toggle" : "INVALID"),
 910                      e->xclient.data.l[1], e->xclient.data.l[2],
 911                      client->window);
 912             client_set_state(client, e->xclient.data.l[0],
 913                              e->xclient.data.l[1], e->xclient.data.l[2]);
 914         } else if (msgtype == prop_atoms.net_close_window) {
 915             ob_debug("net_close_window for 0x%lx\n", client->window);
 916             client_close(client);
 917         } else if (msgtype == prop_atoms.net_active_window) {
 918             ob_debug("net_active_window for 0x%lx\n", client->window);
 919             client_activate(client);
 920         } else if (msgtype == prop_atoms.net_wm_moveresize) {
 921             ob_debug("net_wm_moveresize for 0x%lx\n", client->window);
 922             if ((Atom)e->xclient.data.l[2] ==
 923                 prop_atoms.net_wm_moveresize_size_topleft ||
 924                 (Atom)e->xclient.data.l[2] ==
 925                 prop_atoms.net_wm_moveresize_size_top ||
 926                 (Atom)e->xclient.data.l[2] ==
 927                 prop_atoms.net_wm_moveresize_size_topright ||
 928                 (Atom)e->xclient.data.l[2] ==
 929                 prop_atoms.net_wm_moveresize_size_right ||
 930                 (Atom)e->xclient.data.l[2] ==
 931                 prop_atoms.net_wm_moveresize_size_right ||
 932                 (Atom)e->xclient.data.l[2] ==
 933                 prop_atoms.net_wm_moveresize_size_bottomright ||
 934                 (Atom)e->xclient.data.l[2] ==
 935                 prop_atoms.net_wm_moveresize_size_bottom ||
 936                 (Atom)e->xclient.data.l[2] ==
 937                 prop_atoms.net_wm_moveresize_size_bottomleft ||
 938                 (Atom)e->xclient.data.l[2] ==
 939                 prop_atoms.net_wm_moveresize_size_left ||
 940                 (Atom)e->xclient.data.l[2] ==
 941                 prop_atoms.net_wm_moveresize_move ||
 942                 (Atom)e->xclient.data.l[2] ==
 943                 prop_atoms.net_wm_moveresize_size_keyboard ||
 944                 (Atom)e->xclient.data.l[2] ==
 945                 prop_atoms.net_wm_moveresize_move_keyboard) {
 946
 947                 moveresize_start(client, e->xclient.data.l[0],
 948                                  e->xclient.data.l[1], e->xclient.data.l[3],
 949                                  e->xclient.data.l[2]);
 950             }
 951         } else if (msgtype == prop_atoms.net_moveresize_window) {
 952             int oldg = client->gravity;
 953             int tmpg, x, y, w, h;
 954
 955             if (e->xclient.data.l[0] & 0xff)
 956                 tmpg = e->xclient.data.l[0] & 0xff;
 957             else
 958                 tmpg = oldg;
 959
 960             if (e->xclient.data.l[0] & 1 << 8)
 961                 x = e->xclient.data.l[1];
 962             else
 963                 x = client->area.x;
 964             if (e->xclient.data.l[0] & 1 << 9)
 965                 y = e->xclient.data.l[2];
 966             else
 967                 y = client->area.y;
 968             if (e->xclient.data.l[0] & 1 << 10)
 969                 w = e->xclient.data.l[3];
 970             else
 971                 w = client->area.y;
 972             if (e->xclient.data.l[0] & 1 << 11)
 973                 h = e->xclient.data.l[4];
 974             else
 975                 h = client->area.y;
 976             client->gravity = tmpg;
 977
 978             if (!(client->strut.left || client->strut.right ||
 979                   client->strut.top || client->strut.bottom)) {
 980                 int newx = x;
 981                 int newy = y;
 982                 client_find_onscreen(client, &newx, &newy, w, h, TRUE);
 983                 if (e->xclient.data.l[0] & 1 << 8)
 984                     x = newx;
 985                 if (e->xclient.data.l[0] & 1 << 9)
 986                     y = newy;
 987             }
 988
 989             client_configure(client, OB_CORNER_TOPLEFT,
 990                              x, y, w, h, FALSE, TRUE);
 991
 992             client->gravity = oldg;
 993         }
 994         break;
 995     case PropertyNotify:
 996         /* validate cuz we query stuff off the client here */
 997         if (!client_validate(client)) break;
 998
 999         /* compress changes to a single property into a single change */
1000         while (XCheckTypedWindowEvent(ob_display, e->type,
1001                                       client->window, &ce)) {
1002             /* XXX: it would be nice to compress ALL changes to a property,
1003                not just changes in a row without other props between. */
1004             if (ce.xproperty.atom != e->xproperty.atom) {
1005                 XPutBackEvent(ob_display, &ce);
1006                 break;
1007             }
1008         }
1009
1010         msgtype = e->xproperty.atom;
1011         if (msgtype == XA_WM_NORMAL_HINTS) {
1012             client_update_normal_hints(client);
1013             /* normal hints can make a window non-resizable */
1014             client_setup_decor_and_functions(client);
1015         }
1016         else if (msgtype == XA_WM_HINTS)
1017             client_update_wmhints(client);
1018         else if (msgtype == XA_WM_TRANSIENT_FOR) {
1019             client_update_transient_for(client);
1020             client_get_type(client);
1021             /* type may have changed, so update the layer */
1022             client_calc_layer(client);
1023             client_setup_decor_and_functions(client);
1024         }
1025         else if (msgtype == prop_atoms.net_wm_name ||
1026                  msgtype == prop_atoms.wm_name ||
1027                  msgtype == prop_atoms.net_wm_icon_name ||
1028                  msgtype == prop_atoms.wm_icon_name)
1029             client_update_title(client);
1030         else if (msgtype == prop_atoms.wm_class)
1031             client_update_class(client);
1032         else if (msgtype == prop_atoms.wm_protocols) {
1033             client_update_protocols(client);
1034             client_setup_decor_and_functions(client);
1035         }
1036         else if (msgtype == prop_atoms.net_wm_strut) {
1037             g_message("strut change");
1038             client_update_strut(client);
1039         }
1040         else if (msgtype == prop_atoms.net_wm_icon ||
1041                  msgtype == prop_atoms.kwm_win_icon)
1042             client_update_icons(client);
1043     default:
1044         ;
1045 #ifdef SHAPE
1046         if (extensions_shape && e->type == extensions_shape_event_basep) {
1047             client->shaped = ((XShapeEvent*)e)->shaped;
1048             frame_adjust_shape(client->frame);
1049         }
1050 #endif
1051     }
1052 }
1053
1054 static void event_handle_menu(ObClient *client, XEvent *e)
1055 {
1056     ObMenuEntry *entry;
1057     ObMenu *top;
1058     GList *it = NULL;
1059
1060     top = g_list_nth_data(menu_visible, 0);
1061
1062     ob_debug("EVENT %d\n", e->type);
1063     switch (e->type) {
1064     case KeyPress:
1065         menu_control_keyboard_nav(e->xkey.keycode);
1066         break;
1067     case ButtonPress:
1068         ob_debug("BUTTON PRESS\n");
1069
1070         break;
1071     case ButtonRelease:
1072         ob_debug("BUTTON RELEASED\n");
1073
1074         for (it = menu_visible; it; it = g_list_next(it)) {
1075             ObMenu *m = it->data;
1076             if (e->xbutton.x_root >= m->location.x - ob_rr_theme->bwidth &&
1077                 e->xbutton.y_root >= m->location.y - ob_rr_theme->bwidth &&
1078                 e->xbutton.x_root < m->location.x + m->size.width +
1079                 ob_rr_theme->bwidth &&
1080                 e->xbutton.y_root < m->location.y + m->size.height +
1081                 ob_rr_theme->bwidth) {
1082                 if ((entry = menu_find_entry_by_pos(it->data,
1083                                                     e->xbutton.x_root -
1084                                                     m->location.x,
1085                                                     e->xbutton.y_root -
1086                                                     m->location.y))) {
1087                     m->selected(entry, e->xbutton.button,
1088                                 e->xbutton.x_root,
1089                                 e->xbutton.y_root);
1090                     break;
1091                 }
1092                 break;
1093             }
1094         }
1095
1096         /* will call the menu_hide() for each submenu as well */
1097         if (!it)
1098             menu_hide(menu_visible->data);
1099
1100         break;
1101     case MotionNotify:
1102         ob_debug("motion\n");
1103         for (it = menu_visible; it; it = g_list_next(it)) {
1104             ObMenu *m = it->data;
1105             if ((entry = menu_find_entry_by_pos(it->data,
1106                                                 e->xmotion.x_root -
1107                                                 m->location.x,
1108                                                 e->xmotion.y_root -
1109                                                 m->location.y))) {
1110                 if (m->over && m->over->data != entry)
1111                     m->mouseover(m->over->data, FALSE);
1112
1113                 m->mouseover(entry, TRUE);
1114                 break;
1115             }
1116         }
1117
1118         break;
1119     }
1120 }
1121
1122 void event_add_fd_handler(event_fd_handler *h) {
1123     g_datalist_id_set_data(&fd_handler_list, h->fd, h);
1124     FD_SET(h->fd, &allset);
1125     max_fd = MAX(max_fd, h->fd);
1126 }
1127
1128 static void find_max_fd_foreach(GQuark n, gpointer data, gpointer max)
1129 {
1130     *((unsigned int *)max) = MAX(*((unsigned int *)max), n);
1131 }
1132
1133 static void find_max_fd()
1134 {
1135     int tmpmax = -1;
1136     g_datalist_foreach(&fd_handler_list, find_max_fd_foreach,
1137                        (gpointer)&tmpmax);
1138     max_fd = MAX(x_fd, tmpmax);
1139 #ifdef USE_SM
1140     max_fd = MAX(ice_fd, tmpmax);
1141 #endif
1142 }
1143
1144 void event_remove_fd(int n)
1145 {
1146     FD_CLR(n, &allset);
1147     g_datalist_id_remove_data(&fd_handler_list, (GQuark)n);
1148     find_max_fd();
1149 }
1150
1151 static void fd_event_handle_foreach(GQuark n, gpointer data, gpointer user_data)
1152 {
1153     if (FD_ISSET( (int)n, &selset)) {
1154         event_fd_handler *h = (event_fd_handler *)data;
1155         g_assert(h->fd == (int)n);
1156         h->handler(h->fd, h->data);
1157     }
1158 }
1159
1160 static void fd_event_handle()
1161 {
1162     g_datalist_foreach(&fd_handler_list, fd_event_handle_foreach, NULL);
1163 }
1164
1165 static void event_handle_dock(ObDock *s, XEvent *e)
1166 {
1167     switch (e->type) {
1168     case ButtonPress:
1169         stacking_raise(DOCK_AS_WINDOW(s));
1170         break;
1171     case EnterNotify:
1172         dock_hide(FALSE);
1173         break;
1174     case LeaveNotify:
1175         dock_hide(TRUE);
1176         break;
1177     }
1178 }
1179
1180 static void event_handle_dockapp(ObDockApp *app, XEvent *e)
1181 {
1182     switch (e->type) {
1183     case MotionNotify:
1184         dock_app_drag(app, &e->xmotion);
1185         break;
1186     case UnmapNotify:
1187         if (app->ignore_unmaps) {
1188             app->ignore_unmaps--;
1189             break;
1190         }
1191         dock_remove(app, TRUE);
1192         break;
1193     case DestroyNotify:
1194         dock_remove(app, FALSE);
1195         break;
1196     case ReparentNotify:
1197         dock_remove(app, FALSE);
1198         break;
1199     case ConfigureNotify:
1200         dock_app_configure(app, e->xconfigure.width, e->xconfigure.height);
1201         break;
1202     }
1203 }