src/startup.c

   1 /*
   2  *  Window Maker window manager
   3  *
   4  *  Copyright (c) 1997, 1998 Alfredo K. Kojima
   5  *  Copyright (c) 1999       Dan Pascu
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20  *  USA.
  21  */
  22
  23 #include "wconfig.h"
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <unistd.h>
  28 #include <errno.h>
  29 #include <signal.h>
  30 #include <sys/wait.h>
  31 #ifdef __FreeBSD__
  32 #include <sys/signal.h>
  33 #endif
  34
  35 #include <X11/Xlib.h>
  36 #include <X11/Xutil.h>
  37 #include <X11/Intrinsic.h>
  38 #include <X11/cursorfont.h>
  39 #include <X11/Xproto.h>
  40 #include <X11/keysym.h>
  41 #ifdef SHAPE
  42 #include <X11/extensions/shape.h>
  43 #endif
  44
  45 #include "WindowMaker.h"
  46 #include "GNUstep.h"
  47 #include "texture.h"
  48 #include "screen.h"
  49 #include "window.h"
  50 #include "actions.h"
  51 #include "client.h"
  52 #include "funcs.h"
  53 #include "dock.h"
  54 #include "workspace.h"
  55 #include "keybind.h"
  56 #include "framewin.h"
  57 #include "session.h"
  58 #include "defaults.h"
  59 #include "properties.h"
  60 #include "dialog.h"
  61 #ifdef XDND
  62 #include "xdnd.h"
  63 #endif
  64
  65 #include "xutil.h"
  66
  67 #ifdef KWM_HINTS
  68 #include "kwm.h"
  69 #endif
  70
  71 #if 0
  72 #ifdef SYS_SIGLIST_DECLARED
  73 extern const char * const sys_siglist[];
  74 #endif
  75 #endif
  76
  77 /* for SunOS */
  78 #ifndef SA_RESTART
  79 # define SA_RESTART 0
  80 #endif
  81
  82 /* Just in case, for weirdo systems */
  83 #ifndef SA_NODEFER
  84 # define SA_NODEFER 0
  85 #endif
  86
  87 /****** Global Variables ******/
  88
  89 extern WPreferences wPreferences;
  90
  91 extern WDDomain *WDWindowMaker;
  92 extern WDDomain *WDRootMenu;
  93 extern WDDomain *WDWindowAttributes;
  94
  95 extern WShortKey wKeyBindings[WKBD_LAST];
  96
  97 extern int wScreenCount;
  98
  99
 100 #ifdef SHAPE
 101 extern Bool wShapeSupported;
 102 extern int wShapeEventBase;
 103 #endif
 104
 105 #ifdef KEEP_XKB_LOCK_STATUS
 106 extern Bool wXkbSupported;
 107 extern int wXkbEventBase;
 108 #endif
 109
 110 /* contexts */
 111 extern XContext wWinContext;
 112 extern XContext wAppWinContext;
 113 extern XContext wStackContext;
 114
 115 /* atoms */
 116 extern Atom _XA_WM_STATE;
 117 extern Atom _XA_WM_CHANGE_STATE;
 118 extern Atom _XA_WM_PROTOCOLS;
 119 extern Atom _XA_WM_TAKE_FOCUS;
 120 extern Atom _XA_WM_DELETE_WINDOW;
 121 extern Atom _XA_WM_SAVE_YOURSELF;
 122 extern Atom _XA_WM_CLIENT_LEADER;
 123 extern Atom _XA_WM_COLORMAP_WINDOWS;
 124 extern Atom _XA_WM_COLORMAP_NOTIFY;
 125
 126 extern Atom _XA_GNUSTEP_WM_ATTR;
 127
 128 extern Atom _XA_WINDOWMAKER_MENU;
 129 extern Atom _XA_WINDOWMAKER_WM_PROTOCOLS;
 130 extern Atom _XA_WINDOWMAKER_STATE;
 131 extern Atom _XA_WINDOWMAKER_WM_FUNCTION;
 132 extern Atom _XA_WINDOWMAKER_NOTICEBOARD;
 133 extern Atom _XA_WINDOWMAKER_COMMAND;
 134 extern Atom _XA_WINDOWMAKER_ICON_SIZE;
 135 extern Atom _XA_WINDOWMAKER_ICON_TILE;
 136
 137 extern Atom _XA_GNUSTEP_WM_MINIATURIZE_WINDOW;
 138 extern Atom _XA_GNUSTEP_TITLEBAR_STATE;
 139
 140 #ifdef OFFIX_DND
 141 extern Atom _XA_DND_PROTOCOL;
 142 extern Atom _XA_DND_SELECTION;
 143 #endif
 144
 145
 146 /* cursors */
 147 extern Cursor wCursor[WCUR_LAST];
 148
 149 /* special flags */
 150 extern char WDelayedActionSet;
 151
 152 /***** Local *****/
 153
 154 static WScreen **wScreen = NULL;
 155
 156
 157 static unsigned int _NumLockMask = 0;
 158 static unsigned int _ScrollLockMask = 0;
 159
 160
 161
 162 static void manageAllWindows();
 163
 164 extern void NotifyDeadProcess(pid_t pid, unsigned char status);
 165
 166
 167 static int
 168 catchXError(Display *dpy, XErrorEvent *error)
 169 {
 170     char buffer[MAXLINE];
 171
 172     /* ignore some errors */
 173     if (error->resourceid != None
 174         && ((error->error_code == BadDrawable
 175              && error->request_code == X_GetGeometry)
 176             || (error->error_code == BadMatch
 177                 && (error->request_code == X_SetInputFocus))
 178             || (error->error_code == BadWindow)
 179             /*
 180                 && (error->request_code == X_GetWindowAttributes
 181                     || error->request_code == X_SetInputFocus
 182                     || error->request_code == X_ChangeWindowAttributes
 183                     || error->request_code == X_GetProperty
 184                     || error->request_code == X_ChangeProperty
 185                     || error->request_code == X_QueryTree
 186                     || error->request_code == X_GrabButton
 187                     || error->request_code == X_UngrabButton
 188                     || error->request_code == X_SendEvent
 189                     || error->request_code == X_ConfigureWindow))
 190              */
 191             || (error->request_code == X_InstallColormap))) {
 192 #ifndef DEBUG
 193
 194         return 0;
 195 #else
 196         printf("got X error %x %x %x\n", error->request_code,
 197                error->error_code, (unsigned)error->resourceid);
 198         return 0;
 199 #endif
 200     }
 201     FormatXError(dpy, error, buffer, MAXLINE);
 202     wwarning(_("internal X error: %s\n"), buffer);
 203     return -1;
 204 }
 205
 206
 207 /*
 208  *----------------------------------------------------------------------
 209  * handleXIO-
 210  *      Handle X shutdowns and other stuff.
 211  *----------------------------------------------------------------------
 212  */
 213 static int
 214 handleXIO(Display *xio_dpy)
 215 {
 216     dpy = NULL;
 217     Exit(0);
 218     return 0;
 219 }
 220
 221
 222 /*
 223  *----------------------------------------------------------------------
 224  * delayedAction-
 225  *      Action to be executed after the signal() handler is exited.
 226  *----------------------------------------------------------------------
 227  */
 228 static void
 229 delayedAction(void *cdata)
 230 {
 231     if (WDelayedActionSet == 0) {
 232         return;
 233     }
 234     WDelayedActionSet--;
 235     /*
 236      * Make the event dispatcher do whatever it needs to do,
 237      * including handling zombie processes, restart and exit
 238      * signals.
 239      */
 240     DispatchEvent(NULL);
 241 }
 242
 243
 244 /*
 245  *----------------------------------------------------------------------
 246  * handleExitSig--
 247  *      User generated exit signal handler.
 248  *----------------------------------------------------------------------
 249  */
 250 static RETSIGTYPE
 251 handleExitSig(int sig)
 252 {
 253     sigset_t sigs;
 254
 255     sigfillset(&sigs);
 256     sigprocmask(SIG_BLOCK, &sigs, NULL);
 257
 258     if (sig == SIGUSR1) {
 259 #ifdef SYS_SIGLIST_DECLARED
 260         wwarning(_("got signal %i (%s) - restarting\n"), sig, sys_siglist[sig]);
 261 #else
 262         wwarning(_("got signal %i - restarting\n"), sig);
 263 #endif
 264
 265         SIG_WCHANGE_STATE(WSTATE_NEED_RESTART);
 266         /* setup idle handler, so that this will be handled when
 267          * the select() is returned becaused of the signal, even if
 268          * there are no X events in the queue */
 269         WDelayedActionSet++;
 270     } else if (sig == SIGUSR2) {
 271 #ifdef SYS_SIGLIST_DECLARED
 272         wwarning(_("got signal %i (%s) - rereading defaults\n"), sig, sys_siglist[sig]);
 273 #else
 274         wwarning(_("got signal %i - rereading defaults\n"), sig);
 275 #endif
 276
 277         SIG_WCHANGE_STATE(WSTATE_NEED_REREAD);
 278         /* setup idle handler, so that this will be handled when
 279          * the select() is returned becaused of the signal, even if
 280          * there are no X events in the queue */
 281         WDelayedActionSet++;
 282     } else if (sig == SIGINT || sig == SIGHUP) {
 283 #ifdef SYS_SIGLIST_DECLARED
 284         wwarning(_("got signal %i (%s) - exiting...\n"), sig, sys_siglist[sig]);
 285 #else
 286         wwarning(_("got signal %i - exiting...\n"), sig);
 287 #endif
 288
 289         SIG_WCHANGE_STATE(WSTATE_NEED_EXIT);
 290
 291         WDelayedActionSet++;
 292     }
 293
 294     sigprocmask(SIG_UNBLOCK, &sigs, NULL);
 295 }
 296
 297 /*
 298  *----------------------------------------------------------------------
 299  * handleSig--
 300  *      general signal handler. Exits the program gently.
 301  *----------------------------------------------------------------------
 302  */
 303 static RETSIGTYPE
 304 handleSig(int sig)
 305 {
 306     static int already_crashed = 0;
 307     int dumpcore = 0;
 308 #ifndef NO_EMERGENCY_AUTORESTART
 309     int crashAction;
 310     char *argv[2];
 311
 312     argv[1] = NULL;
 313 #endif
 314
 315     /*
 316      * No functions that potentially do Xlib calls should be called from
 317      * here. Xlib calls are not reentrant so the integrity of Xlib is
 318      * not guaranteed if a Xlib call is made from a signal handler.
 319      */
 320
 321 #ifdef SYS_SIGLIST_DECLARED
 322     wfatal(_("got signal %i (%s)\n"), sig, sys_siglist[sig]);
 323 #else
 324     wfatal(_("got signal %i\n"), sig);
 325 #endif
 326
 327     /* Setting the signal behaviour back to default and then reraising the
 328      * signal is a cleaner way to make program exit and core dump than calling
 329      * abort(), since it correctly returns from the signal handler and sets
 330      * the flags accordingly. -Dan
 331      */
 332     if (sig==SIGSEGV || sig==SIGFPE || sig==SIGBUS || sig==SIGILL
 333         || sig==SIGABRT) {
 334         if (already_crashed) {
 335             wfatal(_("crashed while trying to do some post-crash cleanup. Aborting immediatelly."));
 336             signal(sig, SIG_DFL);
 337             kill(getpid(), sig);
 338             exit(1);
 339         }
 340         already_crashed = 1;
 341
 342         dumpcore = 1;
 343
 344         /*
 345          * Yeah, we shouldn't do this, but it's already crashed anyway :P
 346          */
 347
 348 #ifndef NO_EMERGENCY_AUTORESTART
 349         /* Close the X connection and open a new one. This is to avoid messing
 350          * Xlib because we call to Xlib functions in a signal handler.
 351          */
 352         if (dpy)
 353             XCloseDisplay(dpy);
 354         dpy = XOpenDisplay("");
 355         if (dpy) {
 356             XGrabServer(dpy);
 357             crashAction = wShowCrashingDialogPanel(sig);
 358             XCloseDisplay(dpy);
 359             dpy = NULL;
 360         } else {
 361             wsyserror(_("cannot open connection for crashing dialog panel. Aborting."));
 362             crashAction = WMAbort;
 363         }
 364
 365         if (crashAction == WMAbort) {
 366             signal(sig, SIG_DFL);
 367             kill(getpid(), sig);
 368             return;
 369         }
 370
 371         if (crashAction == WMRestart) {
 372             /* we try to restart Window Maker */
 373             wmessage(_("trying to restart Window Maker..."));
 374             Restart(NULL, False);
 375             /* fallback to alternate window manager then */
 376         }
 377
 378         wmessage(_("trying to start alternate window manager..."));
 379
 380         Restart(FALLBACK_WINDOWMANAGER, False);
 381         Restart("fvwm", False);
 382         Restart("twm", False);
 383         wfatal(_("failed to start alternate window manager. Aborting."));
 384 #else
 385         wfatal(_("a fatal error has occured, probably due to a bug. "
 386                  "Please fill the included BUGFORM and report it."));
 387 #endif /* !NO_EMERGENCY_AUTORESTART */
 388
 389         signal(sig, SIG_DFL);
 390         kill(getpid(), sig);
 391         return;
 392
 393     }
 394
 395     wAbort(dumpcore);
 396 }
 397
 398
 399 static RETSIGTYPE
 400 buryChild(int foo)
 401 {
 402     pid_t pid;
 403     int status;
 404     int save_errno = errno;
 405     sigset_t sigs;
 406
 407     sigfillset(&sigs);
 408     /* Block signals so that NotifyDeadProcess() doesn't get fux0red */
 409     sigprocmask(SIG_BLOCK, &sigs, NULL);
 410
 411     /* R.I.P. */
 412     /* If 2 or more kids exit in a small time window, before this handler gets
 413      * the chance to get invoked, the SIGCHLD signals will be merged and only
 414      * one SIGCHLD signal will be sent to us. We use a while loop to get all
 415      * exited child status because we can't count on the number of SIGCHLD
 416      * signals to know exactly how many kids have exited. -Dan
 417      */
 418     while ((pid=waitpid(-1, &status, WNOHANG))>0 || (pid<0 && errno==EINTR)) {
 419         NotifyDeadProcess(pid, WEXITSTATUS(status));
 420     }
 421
 422     WDelayedActionSet++;
 423
 424     sigprocmask(SIG_UNBLOCK, &sigs, NULL);
 425
 426     errno = save_errno;
 427 }
 428
 429
 430 static int
 431 getWorkspaceState(Window root, WWorkspaceState **state)
 432 {
 433     Atom type_ret;
 434     int fmt_ret;
 435     unsigned long nitems_ret;
 436     unsigned long bytes_after_ret;
 437     CARD32 *data;
 438
 439     if (XGetWindowProperty(dpy, root, _XA_WINDOWMAKER_STATE, 0, 2,
 440                            True, _XA_WINDOWMAKER_STATE,
 441                            &type_ret, &fmt_ret, &nitems_ret, &bytes_after_ret,
 442                            (unsigned char **)&data)!=Success || !data)
 443       return 0;
 444
 445     *state = malloc(sizeof(WWorkspaceState));
 446     if (*state) {
 447         (*state)->flags = data[0];
 448         (*state)->workspace = data[1];
 449     }
 450     XFree(data);
 451
 452     if (*state && type_ret==_XA_WINDOWMAKER_STATE)
 453       return 1;
 454     else
 455       return 0;
 456 }
 457
 458
 459 static void
 460 getOffendingModifiers()
 461 {
 462     int i;
 463     XModifierKeymap *modmap;
 464     KeyCode nlock, slock;
 465     static int mask_table[8] = {
 466         ShiftMask,LockMask,ControlMask,Mod1Mask,
 467             Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
 468     };
 469
 470     nlock = XKeysymToKeycode(dpy, XK_Num_Lock);
 471     slock = XKeysymToKeycode(dpy, XK_Scroll_Lock);
 472
 473     /*
 474      * Find out the masks for the NumLock and ScrollLock modifiers,
 475      * so that we can bind the grabs for when they are enabled too.
 476      */
 477     modmap = XGetModifierMapping(dpy);
 478
 479     if (modmap!=NULL && modmap->max_keypermod>0) {
 480         for (i=0; i<8*modmap->max_keypermod; i++) {
 481             if (modmap->modifiermap[i]==nlock && nlock!=0)
 482                 _NumLockMask = mask_table[i/modmap->max_keypermod];
 483             else if (modmap->modifiermap[i]==slock && slock!=0)
 484                 _ScrollLockMask = mask_table[i/modmap->max_keypermod];
 485         }
 486     }
 487
 488     if (modmap)
 489         XFreeModifiermap(modmap);
 490 }
 491
 492
 493
 494 #ifdef NUMLOCK_HACK
 495 void
 496 wHackedGrabKey(int keycode, unsigned int modifiers,
 497                Window grab_window, Bool owner_events, int pointer_mode,
 498                int keyboard_mode)
 499 {
 500     if (modifiers == AnyModifier)
 501         return;
 502
 503     /* grab all combinations of the modifier with CapsLock, NumLock and
 504      * ScrollLock. How much memory/CPU does such a monstrosity consume
 505      * in the server?
 506      */
 507     if (_NumLockMask)
 508         XGrabKey(dpy, keycode, modifiers|_NumLockMask,
 509                  grab_window, owner_events, pointer_mode, keyboard_mode);
 510     if (_ScrollLockMask)
 511         XGrabKey(dpy, keycode, modifiers|_ScrollLockMask,
 512                  grab_window, owner_events, pointer_mode, keyboard_mode);
 513     if (_NumLockMask && _ScrollLockMask)
 514         XGrabKey(dpy, keycode, modifiers|_NumLockMask|_ScrollLockMask,
 515                  grab_window, owner_events, pointer_mode, keyboard_mode);
 516     if (_NumLockMask)
 517         XGrabKey(dpy, keycode, modifiers|_NumLockMask|LockMask,
 518                  grab_window, owner_events, pointer_mode, keyboard_mode);
 519     if (_ScrollLockMask)
 520         XGrabKey(dpy, keycode, modifiers|_ScrollLockMask|LockMask,
 521                  grab_window, owner_events, pointer_mode, keyboard_mode);
 522     if (_NumLockMask && _ScrollLockMask)
 523         XGrabKey(dpy, keycode, modifiers|_NumLockMask|_ScrollLockMask|LockMask,
 524                  grab_window, owner_events, pointer_mode, keyboard_mode);
 525     /* phew, I guess that's all, right? */
 526 }
 527 #endif
 528
 529 void
 530 wHackedGrabButton(unsigned int button, unsigned int modifiers,
 531                   Window grab_window, Bool owner_events,
 532                   unsigned int event_mask, int pointer_mode,
 533                   int keyboard_mode, Window confine_to, Cursor cursor)
 534 {
 535     XGrabButton(dpy, button, modifiers, grab_window, owner_events,
 536                 event_mask, pointer_mode, keyboard_mode, confine_to, cursor);
 537
 538     if (modifiers==AnyModifier)
 539         return;
 540
 541     XGrabButton(dpy, button, modifiers|LockMask, grab_window, owner_events,
 542                 event_mask, pointer_mode, keyboard_mode, confine_to, cursor);
 543
 544 #ifdef NUMLOCK_HACK
 545     /* same as above, but for mouse buttons */
 546     if (_NumLockMask)
 547         XGrabButton(dpy, button, modifiers|_NumLockMask,
 548                     grab_window, owner_events, event_mask, pointer_mode,
 549                 keyboard_mode, confine_to, cursor);
 550     if (_ScrollLockMask)
 551         XGrabButton(dpy, button, modifiers|_ScrollLockMask,
 552                     grab_window, owner_events, event_mask, pointer_mode,
 553                     keyboard_mode, confine_to, cursor);
 554     if (_NumLockMask && _ScrollLockMask)
 555         XGrabButton(dpy, button, modifiers|_ScrollLockMask|_NumLockMask,
 556                     grab_window, owner_events, event_mask, pointer_mode,
 557                     keyboard_mode, confine_to, cursor);
 558     if (_NumLockMask)
 559         XGrabButton(dpy, button, modifiers|_NumLockMask|LockMask,
 560                     grab_window, owner_events, event_mask, pointer_mode,
 561                 keyboard_mode, confine_to, cursor);
 562     if (_ScrollLockMask)
 563         XGrabButton(dpy, button, modifiers|_ScrollLockMask|LockMask,
 564                     grab_window, owner_events, event_mask, pointer_mode,
 565                     keyboard_mode, confine_to, cursor);
 566     if (_NumLockMask && _ScrollLockMask)
 567         XGrabButton(dpy, button, modifiers|_ScrollLockMask|_NumLockMask|LockMask,
 568                     grab_window, owner_events, event_mask, pointer_mode,
 569                     keyboard_mode, confine_to, cursor);
 570 #endif /* NUMLOCK_HACK */
 571 }
 572
 573 #ifdef notused
 574 void
 575 wHackedUngrabButton(unsigned int button, unsigned int modifiers,
 576                     Window grab_window)
 577 {
 578     XUngrabButton(dpy, button, modifiers|_NumLockMask,
 579                   grab_window);
 580     XUngrabButton(dpy, button, modifiers|_ScrollLockMask,
 581                   grab_window);
 582     XUngrabButton(dpy, button, modifiers|_NumLockMask|_ScrollLockMask,
 583                   grab_window);
 584     XUngrabButton(dpy, button, modifiers|_NumLockMask|LockMask,
 585                   grab_window);
 586     XUngrabButton(dpy, button, modifiers|_ScrollLockMask|LockMask,
 587                   grab_window);
 588     XUngrabButton(dpy, button, modifiers|_NumLockMask|_ScrollLockMask|LockMask,
 589                   grab_window);
 590 }
 591 #endif
 592
 593
 594
 595 WScreen*
 596 wScreenWithNumber(int i)
 597 {
 598     assert(i < wScreenCount);
 599
 600     return wScreen[i];
 601 }
 602
 603
 604 WScreen*
 605 wScreenForRootWindow(Window window)
 606 {
 607     int i;
 608
 609     if (wScreenCount==1)
 610         return wScreen[0];
 611
 612     /*
 613      * Since the number of heads will probably be small (normally 2),
 614      * it should be faster to use this than a hash table, because
 615      * of the overhead.
 616      */
 617     for (i=0; i<wScreenCount; i++) {
 618         if (wScreen[i]->root_win == window) {
 619             return wScreen[i];
 620         }
 621     }
 622
 623     assert("bad_root_window" && 0);
 624
 625     return NULL;
 626 }
 627
 628
 629 WScreen*
 630 wScreenSearchForRootWindow(Window window)
 631 {
 632     int i;
 633
 634     if (wScreenCount==1)
 635         return wScreen[0];
 636
 637     /*
 638      * Since the number of heads will probably be small (normally 2),
 639      * it should be faster to use this than a hash table, because
 640      * of the overhead.
 641      */
 642     for (i=0; i<wScreenCount; i++) {
 643         if (wScreen[i]->root_win == window) {
 644             return wScreen[i];
 645         }
 646     }
 647
 648     return NULL;
 649 }
 650
 651
 652 WScreen*
 653 wScreenForWindow(Window window)
 654 {
 655     XWindowAttributes attr;
 656
 657     if (wScreenCount==1)
 658         return wScreen[0];
 659
 660     if (XGetWindowAttributes(dpy, window, &attr)) {
 661         return wScreenForRootWindow(attr.root);
 662     }
 663     return NULL;
 664 }
 665
 666
 667 static char *atomNames[] = {
 668     "WM_STATE",
 669     "WM_CHANGE_STATE",
 670     "WM_PROTOCOLS",
 671     "WM_TAKE_FOCUS",
 672     "WM_DELETE_WINDOW",
 673     "WM_SAVE_YOURSELF",
 674     "WM_CLIENT_LEADER",
 675     "WM_COLORMAP_WINDOWS",
 676     "WM_COLORMAP_NOTIFY",
 677     GNUSTEP_WM_ATTR_NAME,
 678     "_WINDOWMAKER_MENU",
 679     "_WINDOWMAKER_STATE",
 680     "_WINDOWMAKER_WM_PROTOCOLS",
 681     GNUSTEP_WM_MINIATURIZE_WINDOW,
 682     "_WINDOWMAKER_WM_FUNCTION",
 683     "_WINDOWMAKER_NOTICEBOARD",
 684     "_WINDOWMAKER_COMMAND",
 685     "_WINDOWMAKER_ICON_SIZE",
 686     "_WINDOWMAKER_ICON_TILE",
 687     GNUSTEP_TITLEBAR_STATE
 688 };
 689
 690
 691 /*
 692  *----------------------------------------------------------
 693  * StartUp--
 694  *      starts the window manager and setup global data.
 695  * Called from main() at startup.
 696  *
 697  * Side effects:
 698  * global data declared in main.c is initialized
 699  *----------------------------------------------------------
 700  */
 701 void
 702 StartUp(Bool defaultScreenOnly)
 703 {
 704     WWorkspaceState *ws_state;
 705     struct sigaction sig_action;
 706     int j, max;
 707     Atom atom[sizeof(atomNames)/sizeof(char*)];
 708
 709     /*
 710      * Ignore CapsLock in modifiers
 711      */
 712     ValidModMask = 0xff & ~LockMask;
 713
 714     getOffendingModifiers();
 715     /*
 716      * Ignore NumLock and ScrollLock too
 717      */
 718     ValidModMask &= ~(_NumLockMask|_ScrollLockMask);
 719
 720
 721     memset(&wKeyBindings, 0, sizeof(wKeyBindings));
 722
 723     wWinContext = XUniqueContext();
 724     wAppWinContext = XUniqueContext();
 725     wStackContext = XUniqueContext();
 726
 727 /*    _XA_VERSION = XInternAtom(dpy, "VERSION", False);*/
 728
 729 #ifdef HAVE_XINTERNATOMS
 730     XInternAtoms(dpy, atomNames, sizeof(atomNames)/sizeof(char*),
 731                  False, atom);
 732 #else
 733
 734     {
 735         int i;
 736         for (i = 0; i < sizeof(atomNames)/sizeof(char*); i++) {
 737             atom[i] = XInternAtom(dpy, atomNames[i], False);
 738         }
 739     }
 740 #endif
 741
 742     _XA_WM_STATE = atom[0];
 743     _XA_WM_CHANGE_STATE = atom[1];
 744     _XA_WM_PROTOCOLS = atom[2];
 745     _XA_WM_TAKE_FOCUS = atom[3];
 746     _XA_WM_DELETE_WINDOW = atom[4];
 747     _XA_WM_SAVE_YOURSELF = atom[5];
 748     _XA_WM_CLIENT_LEADER = atom[6];
 749     _XA_WM_COLORMAP_WINDOWS = atom[7];
 750     _XA_WM_COLORMAP_NOTIFY = atom[8];
 751
 752     _XA_GNUSTEP_WM_ATTR = atom[9];
 753
 754     _XA_WINDOWMAKER_MENU = atom[10];
 755     _XA_WINDOWMAKER_STATE = atom[11];
 756
 757     _XA_WINDOWMAKER_WM_PROTOCOLS = atom[12];
 758
 759     _XA_GNUSTEP_WM_MINIATURIZE_WINDOW = atom[13];
 760
 761     _XA_WINDOWMAKER_WM_FUNCTION = atom[14];
 762
 763     _XA_WINDOWMAKER_NOTICEBOARD = atom[15];
 764
 765     _XA_WINDOWMAKER_COMMAND = atom[16];
 766
 767     _XA_WINDOWMAKER_ICON_SIZE = atom[17];
 768     _XA_WINDOWMAKER_ICON_TILE = atom[18];
 769
 770     _XA_GNUSTEP_TITLEBAR_STATE = atom[19];
 771
 772 #ifdef OFFIX_DND
 773     _XA_DND_SELECTION = XInternAtom(dpy, "DndSelection", False);
 774     _XA_DND_PROTOCOL = XInternAtom(dpy, "DndProtocol", False);
 775 #endif
 776 #ifdef XDND
 777     wXDNDInitializeAtoms();
 778 #endif
 779
 780
 781     /* cursors */
 782 #ifdef DEFINABLE_CURSOR
 783     wCursor[WCUR_NORMAL] = None;
 784 #else
 785     wCursor[WCUR_NORMAL] = XCreateFontCursor(dpy, XC_left_ptr);
 786 #endif
 787     wCursor[WCUR_ROOT] = XCreateFontCursor(dpy, XC_left_ptr);
 788     wCursor[WCUR_ARROW] = XCreateFontCursor(dpy, XC_top_left_arrow);
 789     wCursor[WCUR_MOVE] = XCreateFontCursor(dpy, XC_fleur);
 790     wCursor[WCUR_RESIZE] = XCreateFontCursor(dpy, XC_sizing);
 791     wCursor[WCUR_TOPLEFTRESIZE] = XCreateFontCursor(dpy, XC_top_left_corner);
 792     wCursor[WCUR_TOPRIGHTRESIZE] = XCreateFontCursor(dpy, XC_top_right_corner);
 793     wCursor[WCUR_BOTTOMLEFTRESIZE] = XCreateFontCursor(dpy, XC_bottom_left_corner);
 794     wCursor[WCUR_BOTTOMRIGHTRESIZE] = XCreateFontCursor(dpy, XC_bottom_right_corner);
 795     wCursor[WCUR_VERTICALRESIZE] = XCreateFontCursor(dpy, XC_sb_v_double_arrow);
 796     wCursor[WCUR_HORIZONRESIZE] = XCreateFontCursor(dpy, XC_sb_h_double_arrow);
 797     wCursor[WCUR_WAIT] = XCreateFontCursor(dpy, XC_watch);
 798     wCursor[WCUR_QUESTION] = XCreateFontCursor(dpy, XC_question_arrow);
 799     wCursor[WCUR_TEXT]     = XCreateFontCursor(dpy, XC_xterm); /* odd name???*/
 800     wCursor[WCUR_SELECT] = XCreateFontCursor(dpy, XC_cross);
 801
 802     /* signal handler stuff that gets called when a signal is caught */
 803     WMAddEternalTimerHandler(500, delayedAction, NULL);
 804
 805     /* emergency exit... */
 806     sig_action.sa_handler = handleSig;
 807     sigemptyset(&sig_action.sa_mask);
 808
 809     sig_action.sa_flags = SA_RESTART;
 810     sigaction(SIGQUIT, &sig_action, NULL);
 811     sigaction(SIGSEGV, &sig_action, NULL);
 812     sigaction(SIGBUS, &sig_action, NULL);
 813     sigaction(SIGFPE, &sig_action, NULL);
 814     sigaction(SIGABRT, &sig_action, NULL);
 815
 816     sig_action.sa_handler = handleExitSig;
 817
 818     /* Here we set SA_RESTART for safety, because SIGUSR1 may not be handled
 819      * immediately.
 820      * -Dan */
 821     sig_action.sa_flags = SA_RESTART;
 822 /*    sigaction(SIGTERM, &sig_action, NULL);*/
 823     sigaction(SIGINT, &sig_action, NULL);
 824     sigaction(SIGHUP, &sig_action, NULL);
 825     sigaction(SIGUSR1, &sig_action, NULL);
 826     sigaction(SIGUSR2, &sig_action, NULL);
 827
 828     /* ignore dead pipe */
 829     sig_action.sa_handler = SIG_IGN;
 830     sig_action.sa_flags = SA_RESTART;
 831     sigaction(SIGPIPE, &sig_action, NULL);
 832
 833     /* handle dead children */
 834     sig_action.sa_handler = buryChild;
 835     sig_action.sa_flags = SA_NOCLDSTOP|SA_RESTART;
 836     sigaction(SIGCHLD, &sig_action, NULL);
 837
 838     /* Now we unblock all signals, that may have been blocked by the parent
 839      * who exec()-ed us. This can happen for example if Window Maker crashes
 840      * and restarts itself or another window manager from the signal handler.
 841      * In this case, the new proccess inherits the blocked signal mask and
 842      * will no longer react to that signal, until unblocked.
 843      * This is because the signal handler of the proccess who crashed (parent)
 844      * didn't return, and the signal remained blocked. -Dan
 845      */
 846     sigfillset(&sig_action.sa_mask);
 847     sigprocmask(SIG_UNBLOCK, &sig_action.sa_mask, NULL);
 848
 849     /* handle X shutdowns a such */
 850     XSetIOErrorHandler(handleXIO);
 851
 852     /* set hook for out event dispatcher in WINGs event dispatcher */
 853     WMHookEventHandler(DispatchEvent);
 854
 855     /* initialize defaults stuff */
 856     WDWindowMaker = wDefaultsInitDomain("WindowMaker", True);
 857     if (!WDWindowMaker->dictionary) {
 858         wwarning(_("could not read domain \"%s\" from defaults database"),
 859                  "WindowMaker");
 860     }
 861
 862     /* read defaults that don't change until a restart and are
 863      * screen independent */
 864     wReadStaticDefaults(WDWindowMaker ? WDWindowMaker->dictionary : NULL);
 865
 866     /* check sanity of some values */
 867     if (wPreferences.icon_size < 16) {
 868         wwarning(_("icon size is configured to %i, but it's too small. Using 16, instead\n"),
 869                  wPreferences.icon_size);
 870         wPreferences.icon_size = 16;
 871     }
 872
 873     /* init other domains */
 874     WDRootMenu = wDefaultsInitDomain("WMRootMenu", False);
 875     if (!WDRootMenu->dictionary) {
 876         wwarning(_("could not read domain \"%s\" from defaults database"),
 877                  "WMRootMenu");
 878     }
 879
 880     WDWindowAttributes = wDefaultsInitDomain("WMWindowAttributes", True);
 881     if (!WDWindowAttributes->dictionary) {
 882         wwarning(_("could not read domain \"%s\" from defaults database"),
 883                  "WMWindowAttributes");
 884     }
 885
 886     XSetErrorHandler((XErrorHandler)catchXError);
 887
 888 #ifdef SHAPE
 889     /* ignore j */
 890     wShapeSupported = XShapeQueryExtension(dpy, &wShapeEventBase, &j);
 891 #endif
 892
 893 #ifdef KEEP_XKB_LOCK_STATUS
 894     wXkbSupported = XkbQueryExtension(dpy, NULL, &wXkbEventBase, NULL, NULL, NULL);
 895     if(wPreferences.modelock && !wXkbSupported) {
 896         wwarning(_("XKB is not supported. KbdModeLock is automatically disabled."));
 897         wPreferences.modelock = 0;
 898     }
 899 #endif
 900
 901     if (defaultScreenOnly) {
 902         max = 1;
 903     } else {
 904         max = ScreenCount(dpy);
 905     }
 906     wScreen = wmalloc(sizeof(WScreen*)*max);
 907
 908     wScreenCount = 0;
 909
 910     /* manage the screens */
 911     for (j = 0; j < max; j++) {
 912         if (defaultScreenOnly || max==1) {
 913             wScreen[wScreenCount] = wScreenInit(DefaultScreen(dpy));
 914             if (!wScreen[wScreenCount]) {
 915                 wfatal(_("it seems that there is already a window manager running"));
 916                 Exit(1);
 917             }
 918         } else {
 919             wScreen[wScreenCount] = wScreenInit(j);
 920             if (!wScreen[wScreenCount]) {
 921                 wwarning(_("could not manage screen %i"), j);
 922                 continue;
 923             }
 924         }
 925         wScreenCount++;
 926     }
 927
 928     /* initialize/restore state for the screens */
 929     for (j = 0; j < wScreenCount; j++) {
 930         /* restore workspace state */
 931         if (!getWorkspaceState(wScreen[j]->root_win, &ws_state)) {
 932             ws_state = NULL;
 933         }
 934
 935         wScreenRestoreState(wScreen[j]);
 936
 937         /* manage all windows that were already here before us */
 938         if (!wPreferences.flags.nodock && wScreen[j]->dock)
 939             wScreen[j]->last_dock = wScreen[j]->dock;
 940
 941         manageAllWindows(wScreen[j]);
 942
 943         /* restore saved menus */
 944         wMenuRestoreState(wScreen[j]);
 945
 946         /* If we're not restarting restore session */
 947         if (ws_state == NULL && !wPreferences.flags.norestore)
 948             wSessionRestoreState(wScreen[j]);
 949
 950         if (!wPreferences.flags.noautolaunch) {
 951             /* auto-launch apps */
 952             if (!wPreferences.flags.nodock && wScreen[j]->dock) {
 953                 wScreen[j]->last_dock = wScreen[j]->dock;
 954                 wDockDoAutoLaunch(wScreen[j]->dock, 0);
 955             }
 956             /* auto-launch apps in clip */
 957             if (!wPreferences.flags.noclip) {
 958                 int i;
 959                 for(i=0; i<wScreen[j]->workspace_count; i++) {
 960                     if (wScreen[j]->workspaces[i]->clip) {
 961                         wScreen[j]->last_dock = wScreen[j]->workspaces[i]->clip;
 962                         wDockDoAutoLaunch(wScreen[j]->workspaces[i]->clip, i);
 963                     }
 964                 }
 965             }
 966         }
 967
 968         /* go to workspace where we were before restart */
 969         if (ws_state) {
 970             wWorkspaceForceChange(wScreen[j], ws_state->workspace);
 971             wfree(ws_state);
 972         } else {
 973             wSessionRestoreLastWorkspace(wScreen[j]);
 974         }
 975
 976 #ifdef KWM_HINTS
 977         wKWMSetInitializedHint(wScreen[j]);
 978 #endif
 979     }
 980
 981     if (wScreenCount == 0) {
 982         wfatal(_("could not manage any screen"));
 983         Exit(1);
 984     }
 985
 986     if (!wPreferences.flags.nopolling && !wPreferences.flags.noupdates) {
 987         /* setup defaults file polling */
 988         WMAddTimerHandler(3000, wDefaultsCheckDomains, NULL);
 989     }
 990 }
 991
 992
 993
 994
 995 static Bool
 996 windowInList(Window window, Window *list, int count)
 997 {
 998     for (; count>=0; count--) {
 999         if (window == list[count])
1000             return True;
1001     }
1002     return False;
1003 }
1004
1005 /*
1006  *-----------------------------------------------------------------------
1007  * manageAllWindows--
1008  *      Manages all windows in the screen.
1009  *
1010  * Notes:
1011  *      Called when the wm is being started.
1012  *      No events can be processed while the windows are being
1013  * reparented/managed.
1014  *-----------------------------------------------------------------------
1015  */
1016 static void
1017 manageAllWindows(WScreen *scr)
1018 {
1019     Window root, parent;
1020     Window *children;
1021     unsigned int nchildren;
1022     unsigned int i, j;
1023     WWindow *wwin;
1024
1025     XGrabServer(dpy);
1026     XQueryTree(dpy, scr->root_win, &root, &parent, &children, &nchildren);
1027
1028     scr->flags.startup = 1;
1029
1030     /* first remove all icon windows */
1031     for (i = 0; i < nchildren; i++) {
1032         XWMHints *wmhints;
1033
1034         if (children[i]==None)
1035             continue;
1036
1037         wmhints = XGetWMHints(dpy, children[i]);
1038         if (wmhints && (wmhints->flags & IconWindowHint)) {
1039             for (j = 0; j < nchildren; j++)  {
1040                 if (children[j] == wmhints->icon_window) {
1041                     XFree(wmhints);
1042                     wmhints = NULL;
1043                     children[j] = None;
1044                     break;
1045                 }
1046             }
1047         }
1048         if (wmhints) {
1049             XFree(wmhints);
1050         }
1051     }
1052
1053
1054     for (i = 0; i < nchildren; i++) {
1055         if (children[i] == None)
1056             continue;
1057
1058 #ifdef KWM_HINTS
1059         wKWMCheckModule(scr, children[i]);
1060 #endif
1061         wwin = wManageWindow(scr, children[i]);
1062         if (wwin) {
1063             /* apply states got from WSavedState */
1064             /* shaded + minimized is not restored correctly */
1065             if (wwin->flags.shaded) {
1066                 wwin->flags.shaded = 0;
1067                 wShadeWindow(wwin);
1068             }
1069             if (wwin->flags.miniaturized
1070                 && (wwin->transient_for == None
1071                     || wwin->transient_for == scr->root_win
1072                     || !windowInList(wwin->transient_for, children,
1073                                      nchildren))) {
1074
1075                 wwin->flags.skip_next_animation = 1;
1076                 wwin->flags.miniaturized = 0;
1077                 wIconifyWindow(wwin);
1078             } else {
1079                 wClientSetState(wwin, NormalState, None);
1080             }
1081         }
1082     }
1083     XUngrabServer(dpy);
1084
1085     /* hide apps */
1086     wwin = scr->focused_window;
1087     while (wwin) {
1088         if (wwin->flags.hidden) {
1089             WApplication *wapp = wApplicationOf(wwin->main_window);
1090
1091             if (wapp) {
1092                 wwin->flags.hidden = 0;
1093                 wHideApplication(wapp);
1094             } else {
1095                 wwin->flags.hidden = 0;
1096             }
1097         }
1098         wwin = wwin->prev;
1099     }
1100
1101     XFree(children);
1102     scr->flags.startup = 0;
1103     scr->flags.startup2 = 1;
1104
1105     while (XPending(dpy)) {
1106         XEvent ev;
1107         WMNextEvent(dpy, &ev);
1108         WMHandleEvent(&ev);
1109     }
1110     wWorkspaceForceChange(scr, 0);
1111     if (!wPreferences.flags.noclip)
1112         wDockShowIcons(scr->workspaces[scr->current_workspace]->clip);
1113     scr->flags.startup2 = 0;
1114 }
1115
1116
1117