src/startup.c

   1 /*
   2  *  Window Maker window manager
   3  *
   4  *  Copyright (c) 1997-2003 Alfredo K. Kojima
   5  *  Copyright (c) 1998-2003 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 <string.h>
  29 #include <errno.h>
  30 #include <signal.h>
  31 #include <sys/wait.h>
  32 #ifdef __FreeBSD__
  33 #include <sys/signal.h>
  34 #endif
  35
  36 #include <X11/Xlib.h>
  37 #include <X11/Xresource.h>
  38 #include <X11/Xutil.h>
  39 #include <X11/cursorfont.h>
  40 #include <X11/Xproto.h>
  41 #include <X11/keysym.h>
  42 #ifdef SHAPE
  43 #include <X11/extensions/shape.h>
  44 #endif
  45
  46 #include "WindowMaker.h"
  47 #include "GNUstep.h"
  48 #include "texture.h"
  49 #include "screen.h"
  50 #include "window.h"
  51 #include "actions.h"
  52 #include "client.h"
  53 #include "funcs.h"
  54 #include "dock.h"
  55 #include "workspace.h"
  56 #include "keybind.h"
  57 #include "framewin.h"
  58 #include "session.h"
  59 #include "defaults.h"
  60 #include "properties.h"
  61 #include "dialog.h"
  62 #include "wmspec.h"
  63 #ifdef XDND
  64 #include "xdnd.h"
  65 #endif
  66
  67 #include "xutil.h"
  68
  69 /* for SunOS */
  70 #ifndef SA_RESTART
  71 # define SA_RESTART 0
  72 #endif
  73
  74 /* Just in case, for weirdo systems */
  75 #ifndef SA_NODEFER
  76 # define SA_NODEFER 0
  77 #endif
  78
  79 /****** Global Variables ******/
  80
  81 extern WPreferences wPreferences;
  82
  83 extern WDDomain *WDWindowMaker;
  84 extern WDDomain *WDRootMenu;
  85 extern WDDomain *WDWindowAttributes;
  86
  87 extern WShortKey wKeyBindings[WKBD_LAST];
  88
  89 extern int wScreenCount;
  90
  91 #ifdef SHAPE
  92 extern Bool wShapeSupported;
  93 extern int wShapeEventBase;
  94 #endif
  95
  96 #ifdef KEEP_XKB_LOCK_STATUS
  97 extern Bool wXkbSupported;
  98 extern int wXkbEventBase;
  99 #endif
 100
 101 /* contexts */
 102 extern XContext wWinContext;
 103 extern XContext wAppWinContext;
 104 extern XContext wStackContext;
 105 extern XContext wVEdgeContext;
 106
 107 /* atoms */
 108 extern Atom _XA_WM_STATE;
 109 extern Atom _XA_WM_CHANGE_STATE;
 110 extern Atom _XA_WM_PROTOCOLS;
 111 extern Atom _XA_WM_TAKE_FOCUS;
 112 extern Atom _XA_WM_DELETE_WINDOW;
 113 extern Atom _XA_WM_SAVE_YOURSELF;
 114 extern Atom _XA_WM_CLIENT_LEADER;
 115 extern Atom _XA_WM_COLORMAP_WINDOWS;
 116 extern Atom _XA_WM_COLORMAP_NOTIFY;
 117
 118 extern Atom _XA_GNUSTEP_WM_ATTR;
 119
 120 extern Atom _XA_WINDOWMAKER_MENU;
 121 extern Atom _XA_WINDOWMAKER_WM_PROTOCOLS;
 122 extern Atom _XA_WINDOWMAKER_STATE;
 123 extern Atom _XA_WINDOWMAKER_WM_FUNCTION;
 124 extern Atom _XA_WINDOWMAKER_NOTICEBOARD;
 125 extern Atom _XA_WINDOWMAKER_COMMAND;
 126 extern Atom _XA_WINDOWMAKER_ICON_SIZE;
 127 extern Atom _XA_WINDOWMAKER_ICON_TILE;
 128
 129 extern Atom _XA_GNUSTEP_WM_MINIATURIZE_WINDOW;
 130 extern Atom _XA_GNUSTEP_TITLEBAR_STATE;
 131
 132 extern Atom _XA_WM_IGNORE_FOCUS_EVENTS;
 133
 134 /* cursors */
 135 extern Cursor wCursor[WCUR_LAST];
 136
 137 /* special flags */
 138 /*extern char WDelayedActionSet;*/
 139
 140 /***** Local *****/
 141
 142 static WScreen **wScreen = NULL;
 143
 144 static unsigned int _NumLockMask = 0;
 145 static unsigned int _ScrollLockMask = 0;
 146
 147 static void manageAllWindows(WScreen * scr, int crashed);
 148
 149 extern void NotifyDeadProcess(pid_t pid, unsigned char status);
 150
 151 static int catchXError(Display * dpy, XErrorEvent * error)
 152 {
 153         char buffer[MAXLINE];
 154
 155         /* ignore some errors */
 156         if (error->resourceid != None
 157             && ((error->error_code == BadDrawable && error->request_code == X_GetGeometry)
 158                 || (error->error_code == BadMatch && (error->request_code == X_SetInputFocus))
 159                 || (error->error_code == BadWindow)
 160                 /*
 161                    && (error->request_code == X_GetWindowAttributes
 162                    || error->request_code == X_SetInputFocus
 163                    || error->request_code == X_ChangeWindowAttributes
 164                    || error->request_code == X_GetProperty
 165                    || error->request_code == X_ChangeProperty
 166                    || error->request_code == X_QueryTree
 167                    || error->request_code == X_GrabButton
 168                    || error->request_code == X_UngrabButton
 169                    || error->request_code == X_SendEvent
 170                    || error->request_code == X_ConfigureWindow))
 171                  */
 172                 || (error->request_code == X_InstallColormap))) {
 173 #ifndef DEBUG
 174
 175                 return 0;
 176 #else
 177                 printf("got X error %x %x %x\n", error->request_code,
 178                        error->error_code, (unsigned)error->resourceid);
 179                 return 0;
 180 #endif
 181         }
 182         FormatXError(dpy, error, buffer, MAXLINE);
 183         wwarning(_("internal X error: %s\n"), buffer);
 184         return -1;
 185 }
 186
 187 /*
 188  *----------------------------------------------------------------------
 189  * handleXIO-
 190  *      Handle X shutdowns and other stuff.
 191  *----------------------------------------------------------------------
 192  */
 193 static int handleXIO(Display * xio_dpy)
 194 {
 195         dpy = NULL;
 196         Exit(0);
 197         return 0;
 198 }
 199
 200 /*
 201  *----------------------------------------------------------------------
 202  * delayedAction-
 203  *      Action to be executed after the signal() handler is exited.
 204  * This was called every 500ms to 'clean up' signals. Not used now.
 205  *----------------------------------------------------------------------
 206  */
 207 #ifdef notused
 208 static void delayedAction(void *cdata)
 209 {
 210         if (WDelayedActionSet == 0) {
 211                 return;
 212         }
 213         WDelayedActionSet--;
 214         /*
 215          * Make the event dispatcher do whatever it needs to do,
 216          * including handling zombie processes, restart and exit
 217          * signals.
 218          */
 219         DispatchEvent(NULL);
 220 }
 221 #endif
 222
 223 /*
 224  *----------------------------------------------------------------------
 225  * handleExitSig--
 226  *      User generated exit signal handler.
 227  *----------------------------------------------------------------------
 228  */
 229 static RETSIGTYPE handleExitSig(int sig)
 230 {
 231         sigset_t sigs;
 232
 233         sigfillset(&sigs);
 234         sigprocmask(SIG_BLOCK, &sigs, NULL);
 235
 236         if (sig == SIGUSR1) {
 237                 wwarning("got signal %i - restarting\n", sig);
 238                 SIG_WCHANGE_STATE(WSTATE_NEED_RESTART);
 239         } else if (sig == SIGUSR2) {
 240                 wwarning("got signal %i - rereading defaults\n", sig);
 241                 SIG_WCHANGE_STATE(WSTATE_NEED_REREAD);
 242         } else if (sig == SIGTERM || sig == SIGINT || sig == SIGHUP) {
 243                 wwarning("got signal %i - exiting...\n", sig);
 244                 SIG_WCHANGE_STATE(WSTATE_NEED_EXIT);
 245         }
 246
 247         sigprocmask(SIG_UNBLOCK, &sigs, NULL);
 248         DispatchEvent(NULL);    /* Dispatch events imediately. */
 249 }
 250
 251 /* Dummy signal handler */
 252 static void dummyHandler(int sig)
 253 {
 254 }
 255
 256 /*
 257  *----------------------------------------------------------------------
 258  * handleSig--
 259  *      general signal handler. Exits the program gently.
 260  *----------------------------------------------------------------------
 261  */
 262 static RETSIGTYPE handleSig(int sig)
 263 {
 264         wfatal("got signal %i\n", sig);
 265
 266         /* Setting the signal behaviour back to default and then reraising the
 267          * signal is a cleaner way to make program exit and core dump than calling
 268          * abort(), since it correctly returns from the signal handler and sets
 269          * the flags accordingly. -Dan
 270          */
 271         if (sig == SIGSEGV || sig == SIGFPE || sig == SIGBUS || sig == SIGILL || sig == SIGABRT) {
 272                 signal(sig, SIG_DFL);
 273                 kill(getpid(), sig);
 274                 return;
 275         }
 276
 277         wAbort(0);
 278 }
 279
 280 static RETSIGTYPE buryChild(int foo)
 281 {
 282         pid_t pid;
 283         int status;
 284         int save_errno = errno;
 285         sigset_t sigs;
 286
 287         sigfillset(&sigs);
 288         /* Block signals so that NotifyDeadProcess() doesn't get fux0red */
 289         sigprocmask(SIG_BLOCK, &sigs, NULL);
 290
 291         /* R.I.P. */
 292         /* If 2 or more kids exit in a small time window, before this handler gets
 293          * the chance to get invoked, the SIGCHLD signals will be merged and only
 294          * one SIGCHLD signal will be sent to us. We use a while loop to get all
 295          * exited child status because we can't count on the number of SIGCHLD
 296          * signals to know exactly how many kids have exited. -Dan
 297          */
 298         while ((pid = waitpid(-1, &status, WNOHANG)) > 0 || (pid < 0 && errno == EINTR)) {
 299                 NotifyDeadProcess(pid, WEXITSTATUS(status));
 300         }
 301
 302         sigprocmask(SIG_UNBLOCK, &sigs, NULL);
 303
 304         errno = save_errno;
 305 }
 306
 307 static void getOffendingModifiers()
 308 {
 309         int i;
 310         XModifierKeymap *modmap;
 311         KeyCode nlock, slock;
 312         static int mask_table[8] = {
 313                 ShiftMask, LockMask, ControlMask, Mod1Mask,
 314                 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
 315         };
 316
 317         nlock = XKeysymToKeycode(dpy, XK_Num_Lock);
 318         slock = XKeysymToKeycode(dpy, XK_Scroll_Lock);
 319
 320         /*
 321          * Find out the masks for the NumLock and ScrollLock modifiers,
 322          * so that we can bind the grabs for when they are enabled too.
 323          */
 324         modmap = XGetModifierMapping(dpy);
 325
 326         if (modmap != NULL && modmap->max_keypermod > 0) {
 327                 for (i = 0; i < 8 * modmap->max_keypermod; i++) {
 328                         if (modmap->modifiermap[i] == nlock && nlock != 0)
 329                                 _NumLockMask = mask_table[i / modmap->max_keypermod];
 330                         else if (modmap->modifiermap[i] == slock && slock != 0)
 331                                 _ScrollLockMask = mask_table[i / modmap->max_keypermod];
 332                 }
 333         }
 334
 335         if (modmap)
 336                 XFreeModifiermap(modmap);
 337 }
 338
 339 #ifdef NUMLOCK_HACK
 340 void
 341 wHackedGrabKey(int keycode, unsigned int modifiers,
 342                Window grab_window, Bool owner_events, int pointer_mode, int keyboard_mode)
 343 {
 344         if (modifiers == AnyModifier)
 345                 return;
 346
 347         /* grab all combinations of the modifier with CapsLock, NumLock and
 348          * ScrollLock. How much memory/CPU does such a monstrosity consume
 349          * in the server?
 350          */
 351         if (_NumLockMask)
 352                 XGrabKey(dpy, keycode, modifiers | _NumLockMask,
 353                          grab_window, owner_events, pointer_mode, keyboard_mode);
 354         if (_ScrollLockMask)
 355                 XGrabKey(dpy, keycode, modifiers | _ScrollLockMask,
 356                          grab_window, owner_events, pointer_mode, keyboard_mode);
 357         if (_NumLockMask && _ScrollLockMask)
 358                 XGrabKey(dpy, keycode, modifiers | _NumLockMask | _ScrollLockMask,
 359                          grab_window, owner_events, pointer_mode, keyboard_mode);
 360         if (_NumLockMask)
 361                 XGrabKey(dpy, keycode, modifiers | _NumLockMask | LockMask,
 362                          grab_window, owner_events, pointer_mode, keyboard_mode);
 363         if (_ScrollLockMask)
 364                 XGrabKey(dpy, keycode, modifiers | _ScrollLockMask | LockMask,
 365                          grab_window, owner_events, pointer_mode, keyboard_mode);
 366         if (_NumLockMask && _ScrollLockMask)
 367                 XGrabKey(dpy, keycode, modifiers | _NumLockMask | _ScrollLockMask | LockMask,
 368                          grab_window, owner_events, pointer_mode, keyboard_mode);
 369         /* phew, I guess that's all, right? */
 370 }
 371 #endif
 372
 373 void
 374 wHackedGrabButton(unsigned int button, unsigned int modifiers,
 375                   Window grab_window, Bool owner_events,
 376                   unsigned int event_mask, int pointer_mode, int keyboard_mode, Window confine_to, Cursor cursor)
 377 {
 378         XGrabButton(dpy, button, modifiers, grab_window, owner_events,
 379                     event_mask, pointer_mode, keyboard_mode, confine_to, cursor);
 380
 381         if (modifiers == AnyModifier)
 382                 return;
 383
 384         XGrabButton(dpy, button, modifiers | LockMask, grab_window, owner_events,
 385                     event_mask, pointer_mode, keyboard_mode, confine_to, cursor);
 386
 387 #ifdef NUMLOCK_HACK
 388         /* same as above, but for mouse buttons */
 389         if (_NumLockMask)
 390                 XGrabButton(dpy, button, modifiers | _NumLockMask,
 391                             grab_window, owner_events, event_mask, pointer_mode,
 392                             keyboard_mode, confine_to, cursor);
 393         if (_ScrollLockMask)
 394                 XGrabButton(dpy, button, modifiers | _ScrollLockMask,
 395                             grab_window, owner_events, event_mask, pointer_mode,
 396                             keyboard_mode, confine_to, cursor);
 397         if (_NumLockMask && _ScrollLockMask)
 398                 XGrabButton(dpy, button, modifiers | _ScrollLockMask | _NumLockMask,
 399                             grab_window, owner_events, event_mask, pointer_mode,
 400                             keyboard_mode, confine_to, cursor);
 401         if (_NumLockMask)
 402                 XGrabButton(dpy, button, modifiers | _NumLockMask | LockMask,
 403                             grab_window, owner_events, event_mask, pointer_mode,
 404                             keyboard_mode, confine_to, cursor);
 405         if (_ScrollLockMask)
 406                 XGrabButton(dpy, button, modifiers | _ScrollLockMask | LockMask,
 407                             grab_window, owner_events, event_mask, pointer_mode,
 408                             keyboard_mode, confine_to, cursor);
 409         if (_NumLockMask && _ScrollLockMask)
 410                 XGrabButton(dpy, button, modifiers | _ScrollLockMask | _NumLockMask | LockMask,
 411                             grab_window, owner_events, event_mask, pointer_mode,
 412                             keyboard_mode, confine_to, cursor);
 413 #endif                          /* NUMLOCK_HACK */
 414 }
 415
 416 #ifdef notused
 417 void wHackedUngrabButton(unsigned int button, unsigned int modifiers, Window grab_window)
 418 {
 419         XUngrabButton(dpy, button, modifiers | _NumLockMask, grab_window);
 420         XUngrabButton(dpy, button, modifiers | _ScrollLockMask, grab_window);
 421         XUngrabButton(dpy, button, modifiers | _NumLockMask | _ScrollLockMask, grab_window);
 422         XUngrabButton(dpy, button, modifiers | _NumLockMask | LockMask, grab_window);
 423         XUngrabButton(dpy, button, modifiers | _ScrollLockMask | LockMask, grab_window);
 424         XUngrabButton(dpy, button, modifiers | _NumLockMask | _ScrollLockMask | LockMask, grab_window);
 425 }
 426 #endif
 427
 428 WScreen *wScreenWithNumber(int i)
 429 {
 430         assert(i < wScreenCount);
 431
 432         return wScreen[i];
 433 }
 434
 435 WScreen *wScreenForRootWindow(Window window)
 436 {
 437         int i;
 438
 439         if (wScreenCount == 1)
 440                 return wScreen[0];
 441
 442         /*
 443          * Since the number of heads will probably be small (normally 2),
 444          * it should be faster to use this than a hash table, because
 445          * of the overhead.
 446          */
 447         for (i = 0; i < wScreenCount; i++) {
 448                 if (wScreen[i]->root_win == window) {
 449                         return wScreen[i];
 450                 }
 451         }
 452
 453         return wScreenForWindow(window);
 454 }
 455
 456 WScreen *wScreenSearchForRootWindow(Window window)
 457 {
 458         int i;
 459
 460         if (wScreenCount == 1)
 461                 return wScreen[0];
 462
 463         /*
 464          * Since the number of heads will probably be small (normally 2),
 465          * it should be faster to use this than a hash table, because
 466          * of the overhead.
 467          */
 468         for (i = 0; i < wScreenCount; i++) {
 469                 if (wScreen[i]->root_win == window) {
 470                         return wScreen[i];
 471                 }
 472         }
 473
 474         return wScreenForWindow(window);
 475 }
 476
 477 WScreen *wScreenForWindow(Window window)
 478 {
 479         XWindowAttributes attr;
 480
 481         if (wScreenCount == 1)
 482                 return wScreen[0];
 483
 484         if (XGetWindowAttributes(dpy, window, &attr)) {
 485                 return wScreenForRootWindow(attr.root);
 486         }
 487         return NULL;
 488 }
 489
 490 static char *atomNames[] = {
 491         "WM_STATE",
 492         "WM_CHANGE_STATE",
 493         "WM_PROTOCOLS",
 494         "WM_TAKE_FOCUS",
 495         "WM_DELETE_WINDOW",
 496         "WM_SAVE_YOURSELF",
 497         "WM_CLIENT_LEADER",
 498         "WM_COLORMAP_WINDOWS",
 499         "WM_COLORMAP_NOTIFY",
 500
 501         "_WINDOWMAKER_MENU",
 502         "_WINDOWMAKER_STATE",
 503         "_WINDOWMAKER_WM_PROTOCOLS",
 504         "_WINDOWMAKER_WM_FUNCTION",
 505         "_WINDOWMAKER_NOTICEBOARD",
 506         "_WINDOWMAKER_COMMAND",
 507         "_WINDOWMAKER_ICON_SIZE",
 508         "_WINDOWMAKER_ICON_TILE",
 509
 510         GNUSTEP_WM_ATTR_NAME,
 511         GNUSTEP_WM_MINIATURIZE_WINDOW,
 512         GNUSTEP_TITLEBAR_STATE,
 513
 514         "WM_IGNORE_FOCUS_EVENTS"
 515 };
 516
 517 /*
 518  *----------------------------------------------------------
 519  * StartUp--
 520  *      starts the window manager and setup global data.
 521  * Called from main() at startup.
 522  *
 523  * Side effects:
 524  * global data declared in main.c is initialized
 525  *----------------------------------------------------------
 526  */
 527 void StartUp(Bool defaultScreenOnly)
 528 {
 529         struct sigaction sig_action;
 530         int j, max;
 531         Atom atom[sizeof(atomNames) / sizeof(char *)];
 532
 533         /*
 534          * Ignore CapsLock in modifiers
 535          */
 536         ValidModMask = 0xff & ~LockMask;
 537
 538         getOffendingModifiers();
 539         /*
 540          * Ignore NumLock and ScrollLock too
 541          */
 542         ValidModMask &= ~(_NumLockMask | _ScrollLockMask);
 543
 544         memset(&wKeyBindings, 0, sizeof(wKeyBindings));
 545
 546         wWinContext = XUniqueContext();
 547         wAppWinContext = XUniqueContext();
 548         wStackContext = XUniqueContext();
 549         wVEdgeContext = XUniqueContext();
 550
 551         /*    _XA_VERSION = XInternAtom(dpy, "VERSION", False); */
 552
 553 #ifdef HAVE_XINTERNATOMS
 554         XInternAtoms(dpy, atomNames, sizeof(atomNames) / sizeof(char *), False, atom);
 555 #else
 556
 557         {
 558                 int i;
 559                 for (i = 0; i < sizeof(atomNames) / sizeof(char *); i++) {
 560                         atom[i] = XInternAtom(dpy, atomNames[i], False);
 561                 }
 562         }
 563 #endif
 564
 565         _XA_WM_STATE = atom[0];
 566         _XA_WM_CHANGE_STATE = atom[1];
 567         _XA_WM_PROTOCOLS = atom[2];
 568         _XA_WM_TAKE_FOCUS = atom[3];
 569         _XA_WM_DELETE_WINDOW = atom[4];
 570         _XA_WM_SAVE_YOURSELF = atom[5];
 571         _XA_WM_CLIENT_LEADER = atom[6];
 572         _XA_WM_COLORMAP_WINDOWS = atom[7];
 573         _XA_WM_COLORMAP_NOTIFY = atom[8];
 574
 575         _XA_WINDOWMAKER_MENU = atom[9];
 576         _XA_WINDOWMAKER_STATE = atom[10];
 577         _XA_WINDOWMAKER_WM_PROTOCOLS = atom[11];
 578         _XA_WINDOWMAKER_WM_FUNCTION = atom[12];
 579         _XA_WINDOWMAKER_NOTICEBOARD = atom[13];
 580         _XA_WINDOWMAKER_COMMAND = atom[14];
 581         _XA_WINDOWMAKER_ICON_SIZE = atom[15];
 582         _XA_WINDOWMAKER_ICON_TILE = atom[16];
 583
 584         _XA_GNUSTEP_WM_ATTR = atom[17];
 585         _XA_GNUSTEP_WM_MINIATURIZE_WINDOW = atom[18];
 586         _XA_GNUSTEP_TITLEBAR_STATE = atom[19];
 587
 588         _XA_WM_IGNORE_FOCUS_EVENTS = atom[20];
 589
 590 #ifdef XDND
 591         wXDNDInitializeAtoms();
 592 #endif
 593
 594         /* cursors */
 595         wCursor[WCUR_NORMAL] = None;    /* inherit from root */
 596         wCursor[WCUR_ROOT] = XCreateFontCursor(dpy, XC_left_ptr);
 597         wCursor[WCUR_ARROW] = XCreateFontCursor(dpy, XC_top_left_arrow);
 598         wCursor[WCUR_MOVE] = XCreateFontCursor(dpy, XC_fleur);
 599         wCursor[WCUR_RESIZE] = XCreateFontCursor(dpy, XC_sizing);
 600         wCursor[WCUR_TOPLEFTRESIZE] = XCreateFontCursor(dpy, XC_top_left_corner);
 601         wCursor[WCUR_TOPRIGHTRESIZE] = XCreateFontCursor(dpy, XC_top_right_corner);
 602         wCursor[WCUR_BOTTOMLEFTRESIZE] = XCreateFontCursor(dpy, XC_bottom_left_corner);
 603         wCursor[WCUR_BOTTOMRIGHTRESIZE] = XCreateFontCursor(dpy, XC_bottom_right_corner);
 604         wCursor[WCUR_VERTICALRESIZE] = XCreateFontCursor(dpy, XC_sb_v_double_arrow);
 605         wCursor[WCUR_HORIZONRESIZE] = XCreateFontCursor(dpy, XC_sb_h_double_arrow);
 606         wCursor[WCUR_WAIT] = XCreateFontCursor(dpy, XC_watch);
 607         wCursor[WCUR_QUESTION] = XCreateFontCursor(dpy, XC_question_arrow);
 608         wCursor[WCUR_TEXT] = XCreateFontCursor(dpy, XC_xterm);  /* odd name??? */
 609         wCursor[WCUR_SELECT] = XCreateFontCursor(dpy, XC_cross);
 610         {
 611                 Pixmap cur = XCreatePixmap(dpy, DefaultRootWindow(dpy), 16, 16, 1);
 612                 GC gc = XCreateGC(dpy, cur, 0, NULL);
 613                 XColor black;
 614                 memset(&black, 0, sizeof(XColor));
 615                 XSetForeground(dpy, gc, 0);
 616                 XFillRectangle(dpy, cur, gc, 0, 0, 16, 16);
 617                 XFreeGC(dpy, gc);
 618                 wCursor[WCUR_EMPTY] = XCreatePixmapCursor(dpy, cur, cur, &black, &black, 0, 0);
 619                 XFreePixmap(dpy, cur);
 620         }
 621
 622         /* emergency exit... */
 623         sig_action.sa_handler = handleSig;
 624         sigemptyset(&sig_action.sa_mask);
 625
 626         sig_action.sa_flags = SA_RESTART;
 627         sigaction(SIGQUIT, &sig_action, NULL);
 628         /* instead of catching these, we let the default handler abort the
 629          * program. The new monitor process will take appropriate action
 630          * when it detects the crash.
 631          sigaction(SIGSEGV, &sig_action, NULL);
 632          sigaction(SIGBUS, &sig_action, NULL);
 633          sigaction(SIGFPE, &sig_action, NULL);
 634          sigaction(SIGABRT, &sig_action, NULL);
 635          */
 636
 637         sig_action.sa_handler = handleExitSig;
 638
 639         /* Here we set SA_RESTART for safety, because SIGUSR1 may not be handled
 640          * immediately. -Dan */
 641         sig_action.sa_flags = SA_RESTART;
 642         sigaction(SIGTERM, &sig_action, NULL);
 643         sigaction(SIGINT, &sig_action, NULL);
 644         sigaction(SIGHUP, &sig_action, NULL);
 645         sigaction(SIGUSR1, &sig_action, NULL);
 646         sigaction(SIGUSR2, &sig_action, NULL);
 647
 648         /* ignore dead pipe */
 649         /* Because POSIX mandates that only signal with handlers are reset
 650          * accross an exec*(), we do not want to propagate ignoring SIGPIPEs
 651          * to children. Hence the dummy handler.
 652          * Philippe Troin <phil@fifi.org>
 653          */
 654         sig_action.sa_handler = &dummyHandler;
 655         sig_action.sa_flags = SA_RESTART;
 656         sigaction(SIGPIPE, &sig_action, NULL);
 657
 658         /* handle dead children */
 659         sig_action.sa_handler = buryChild;
 660         sig_action.sa_flags = SA_NOCLDSTOP | SA_RESTART;
 661         sigaction(SIGCHLD, &sig_action, NULL);
 662
 663         /* Now we unblock all signals, that may have been blocked by the parent
 664          * who exec()-ed us. This can happen for example if Window Maker crashes
 665          * and restarts itself or another window manager from the signal handler.
 666          * In this case, the new proccess inherits the blocked signal mask and
 667          * will no longer react to that signal, until unblocked.
 668          * This is because the signal handler of the proccess who crashed (parent)
 669          * didn't return, and the signal remained blocked. -Dan
 670          */
 671         sigfillset(&sig_action.sa_mask);
 672         sigprocmask(SIG_UNBLOCK, &sig_action.sa_mask, NULL);
 673
 674         /* handle X shutdowns a such */
 675         XSetIOErrorHandler(handleXIO);
 676
 677         /* set hook for out event dispatcher in WINGs event dispatcher */
 678         WMHookEventHandler(DispatchEvent);
 679
 680         /* initialize defaults stuff */
 681         WDWindowMaker = wDefaultsInitDomain("WindowMaker", True);
 682         if (!WDWindowMaker->dictionary) {
 683                 wwarning(_("could not read domain \"%s\" from defaults database"), "WindowMaker");
 684         }
 685
 686         /* read defaults that don't change until a restart and are
 687          * screen independent */
 688         wReadStaticDefaults(WDWindowMaker ? WDWindowMaker->dictionary : NULL);
 689
 690         /* check sanity of some values */
 691         if (wPreferences.icon_size < 16) {
 692                 wwarning(_("icon size is configured to %i, but it's too small. Using 16, instead\n"),
 693                          wPreferences.icon_size);
 694                 wPreferences.icon_size = 16;
 695         }
 696
 697         /* init other domains */
 698         WDRootMenu = wDefaultsInitDomain("WMRootMenu", False);
 699         if (!WDRootMenu->dictionary) {
 700                 wwarning(_("could not read domain \"%s\" from defaults database"), "WMRootMenu");
 701         }
 702         wDefaultsMergeGlobalMenus(WDRootMenu);
 703
 704         WDWindowAttributes = wDefaultsInitDomain("WMWindowAttributes", True);
 705         if (!WDWindowAttributes->dictionary) {
 706                 wwarning(_("could not read domain \"%s\" from defaults database"), "WMWindowAttributes");
 707         }
 708
 709         XSetErrorHandler((XErrorHandler) catchXError);
 710
 711 #ifdef SHAPE
 712         /* ignore j */
 713         wShapeSupported = XShapeQueryExtension(dpy, &wShapeEventBase, &j);
 714 #endif
 715
 716 #ifdef KEEP_XKB_LOCK_STATUS
 717         wXkbSupported = XkbQueryExtension(dpy, NULL, &wXkbEventBase, NULL, NULL, NULL);
 718         if (wPreferences.modelock && !wXkbSupported) {
 719                 wwarning(_("XKB is not supported. KbdModeLock is automatically disabled."));
 720                 wPreferences.modelock = 0;
 721         }
 722 #endif
 723
 724         if (defaultScreenOnly) {
 725                 max = 1;
 726         } else {
 727                 max = ScreenCount(dpy);
 728         }
 729         wScreen = wmalloc(sizeof(WScreen *) * max);
 730
 731         wScreenCount = 0;
 732
 733         /* manage the screens */
 734         for (j = 0; j < max; j++) {
 735                 if (defaultScreenOnly || max == 1) {
 736                         wScreen[wScreenCount] = wScreenInit(DefaultScreen(dpy));
 737                         if (!wScreen[wScreenCount]) {
 738                                 wfatal(_("it seems that there is already a window manager running"));
 739                                 Exit(1);
 740                         }
 741                 } else {
 742                         wScreen[wScreenCount] = wScreenInit(j);
 743                         if (!wScreen[wScreenCount]) {
 744                                 wwarning(_("could not manage screen %i"), j);
 745                                 continue;
 746                         }
 747                 }
 748                 wScreenCount++;
 749         }
 750
 751         InitializeSwitchMenu();
 752
 753         /* initialize/restore state for the screens */
 754         for (j = 0; j < wScreenCount; j++) {
 755                 int lastDesktop;
 756
 757                 lastDesktop = wNETWMGetCurrentDesktopFromHint(wScreen[j]);
 758
 759                 wScreenRestoreState(wScreen[j]);
 760
 761                 /* manage all windows that were already here before us */
 762                 if (!wPreferences.flags.nodock && wScreen[j]->dock)
 763                         wScreen[j]->last_dock = wScreen[j]->dock;
 764
 765                 manageAllWindows(wScreen[j], wPreferences.flags.restarting == 2);
 766
 767                 /* restore saved menus */
 768                 wMenuRestoreState(wScreen[j]);
 769
 770                 /* If we're not restarting, restore session */
 771                 if (wPreferences.flags.restarting == 0 && !wPreferences.flags.norestore)
 772                         wSessionRestoreState(wScreen[j]);
 773
 774                 if (!wPreferences.flags.noautolaunch) {
 775                         /* auto-launch apps */
 776                         if (!wPreferences.flags.nodock && wScreen[j]->dock) {
 777                                 wScreen[j]->last_dock = wScreen[j]->dock;
 778                                 wDockDoAutoLaunch(wScreen[j]->dock, 0);
 779                         }
 780                         /* auto-launch apps in clip */
 781                         if (!wPreferences.flags.noclip) {
 782                                 int i;
 783                                 for (i = 0; i < wScreen[j]->workspace_count; i++) {
 784                                         if (wScreen[j]->workspaces[i]->clip) {
 785                                                 wScreen[j]->last_dock = wScreen[j]->workspaces[i]->clip;
 786                                                 wDockDoAutoLaunch(wScreen[j]->workspaces[i]->clip, i);
 787                                         }
 788                                 }
 789                         }
 790                 }
 791
 792                 /* go to workspace where we were before restart */
 793                 if (lastDesktop >= 0) {
 794                         wWorkspaceForceChange(wScreen[j], lastDesktop);
 795                 } else {
 796                         wSessionRestoreLastWorkspace(wScreen[j]);
 797                 }
 798         }
 799
 800         if (wScreenCount == 0) {
 801                 wfatal(_("could not manage any screen"));
 802                 Exit(1);
 803         }
 804
 805 }
 806
 807 static Bool windowInList(Window window, Window * list, int count)
 808 {
 809         for (; count >= 0; count--) {
 810                 if (window == list[count])
 811                         return True;
 812         }
 813         return False;
 814 }
 815
 816 /*
 817  *-----------------------------------------------------------------------
 818  * manageAllWindows--
 819  *      Manages all windows in the screen.
 820  *
 821  * Notes:
 822  *      Called when the wm is being started.
 823  *      No events can be processed while the windows are being
 824  * reparented/managed.
 825  *-----------------------------------------------------------------------
 826  */
 827 static void manageAllWindows(WScreen * scr, int crashRecovery)
 828 {
 829         Window root, parent;
 830         Window *children;
 831         unsigned int nchildren;
 832         unsigned int i, j;
 833         WWindow *wwin;
 834
 835         XGrabServer(dpy);
 836         XQueryTree(dpy, scr->root_win, &root, &parent, &children, &nchildren);
 837
 838         scr->flags.startup = 1;
 839
 840         /* first remove all icon windows */
 841         for (i = 0; i < nchildren; i++) {
 842                 XWMHints *wmhints;
 843
 844                 if (children[i] == None)
 845                         continue;
 846
 847                 wmhints = XGetWMHints(dpy, children[i]);
 848                 if (wmhints && (wmhints->flags & IconWindowHint)) {
 849                         for (j = 0; j < nchildren; j++) {
 850                                 if (children[j] == wmhints->icon_window) {
 851                                         XFree(wmhints);
 852                                         wmhints = NULL;
 853                                         children[j] = None;
 854                                         break;
 855                                 }
 856                         }
 857                 }
 858                 if (wmhints) {
 859                         XFree(wmhints);
 860                 }
 861         }
 862
 863         for (i = 0; i < nchildren; i++) {
 864                 if (children[i] == None)
 865                         continue;
 866
 867                 wwin = wManageWindow(scr, children[i]);
 868                 if (wwin) {
 869                         /* apply states got from WSavedState */
 870                         /* shaded + minimized is not restored correctly */
 871                         if (wwin->flags.shaded) {
 872                                 wwin->flags.shaded = 0;
 873                                 wShadeWindow(wwin);
 874                         }
 875                         if (wwin->flags.miniaturized
 876                             && (wwin->transient_for == None
 877                                 || wwin->transient_for == scr->root_win
 878                                 || !windowInList(wwin->transient_for, children, nchildren))) {
 879
 880                                 wwin->flags.skip_next_animation = 1;
 881                                 wwin->flags.miniaturized = 0;
 882                                 wIconifyWindow(wwin);
 883                         } else {
 884                                 wClientSetState(wwin, NormalState, None);
 885                         }
 886                         if (crashRecovery) {
 887                                 int border;
 888
 889                                 border = (!HAS_BORDER(wwin) ? 0 : FRAME_BORDER_WIDTH);
 890
 891                                 wWindowMove(wwin, wwin->frame_x - border,
 892                                             wwin->frame_y - border -
 893                                             (wwin->frame->titlebar ? wwin->frame->titlebar->height : 0));
 894                         }
 895                 }
 896         }
 897         XUngrabServer(dpy);
 898
 899         /* hide apps */
 900         wwin = scr->focused_window;
 901         while (wwin) {
 902                 if (wwin->flags.hidden) {
 903                         WApplication *wapp = wApplicationOf(wwin->main_window);
 904
 905                         if (wapp) {
 906                                 wwin->flags.hidden = 0;
 907                                 wHideApplication(wapp);
 908                         } else {
 909                                 wwin->flags.hidden = 0;
 910                         }
 911                 }
 912                 wwin = wwin->prev;
 913         }
 914
 915         XFree(children);
 916         scr->flags.startup = 0;
 917         scr->flags.startup2 = 1;
 918
 919         while (XPending(dpy)) {
 920                 XEvent ev;
 921                 WMNextEvent(dpy, &ev);
 922                 WMHandleEvent(&ev);
 923         }
 924         wWorkspaceForceChange(scr, 0);
 925         if (!wPreferences.flags.noclip)
 926                 wDockShowIcons(scr->workspaces[scr->current_workspace]->clip);
 927         scr->flags.startup2 = 0;
 928 }