scrotwm.c

   1 /* $scrotwm$ */
   2 /*
   3  * Copyright (c) 2009 Marco Peereboom <marco@peereboom.us>
   4  * Copyright (c) 2009 Ryan McBride <mcbride@countersiege.com>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 /*
  19  * Much code and ideas taken from dwm under the following license:
  20  * MIT/X Consortium License
  21  *
  22  * 2006-2008 Anselm R Garbe <garbeam at gmail dot com>
  23  * 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
  24  * 2006-2007 Jukka Salmi <jukka at salmi dot ch>
  25  * 2007 Premysl Hruby <dfenze at gmail dot com>
  26  * 2007 Szabolcs Nagy <nszabolcs at gmail dot com>
  27  * 2007 Christof Musik <christof at sendfax dot de>
  28  * 2007-2008 Enno Gottox Boland <gottox at s01 dot de>
  29  * 2007-2008 Peter Hartlich <sgkkr at hartlich dot com>
  30  * 2008 Martin Hurton <martin dot hurton at gmail dot com>
  31  *
  32  * Permission is hereby granted, free of charge, to any person obtaining a
  33  * copy of this software and associated documentation files (the "Software"),
  34  * to deal in the Software without restriction, including without limitation
  35  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  36  * and/or sell copies of the Software, and to permit persons to whom the
  37  * Software is furnished to do so, subject to the following conditions:
  38  *
  39  * The above copyright notice and this permission notice shall be included in
  40  * all copies or substantial portions of the Software.
  41  *
  42  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  43  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  44  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  45  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  46  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  47  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  48  * DEALINGS IN THE SOFTWARE.
  49  */
  50
  51 #define SWM_VERSION     "0.5"
  52
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <err.h>
  56 #include <locale.h>
  57 #include <unistd.h>
  58 #include <time.h>
  59 #include <signal.h>
  60 #include <string.h>
  61 #include <util.h>
  62 #include <pwd.h>
  63
  64 #include <sys/types.h>
  65 #include <sys/stat.h>
  66 #include <sys/wait.h>
  67 #include <sys/queue.h>
  68 #include <sys/param.h>
  69
  70 #include <X11/cursorfont.h>
  71 #include <X11/keysym.h>
  72 #include <X11/Xatom.h>
  73 #include <X11/Xlib.h>
  74 #include <X11/Xproto.h>
  75 #include <X11/Xutil.h>
  76
  77 /* #define SWM_DEBUG */
  78 #ifdef SWM_DEBUG
  79 #define DPRINTF(x...)           do { if (swm_debug) fprintf(stderr, x); } while(0)
  80 #define DNPRINTF(n,x...)        do { if (swm_debug & n) fprintf(stderr, x); } while(0)
  81 #define SWM_D_MISC              0x0001
  82 #define SWM_D_EVENT             0x0002
  83 #define SWM_D_WS                0x0004
  84 #define SWM_D_FOCUS             0x0008
  85 #define SWM_D_MOVE              0x0010
  86
  87 u_int32_t               swm_debug = 0
  88                             | SWM_D_MISC
  89                             | SWM_D_EVENT
  90                             | SWM_D_WS
  91                             | SWM_D_FOCUS
  92                             | SWM_D_MOVE
  93                             ;
  94 #else
  95 #define DPRINTF(x...)
  96 #define DNPRINTF(n,x...)
  97 #endif
  98
  99 #define LENGTH(x)               (sizeof x / sizeof x[0])
 100 #define MODKEY                  Mod1Mask
 101 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
 102
 103 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 104 int                     other_wm;
 105 int                     screen;
 106 int                     width, height;
 107 int                     running = 1;
 108 int                     ignore_enter = 0;
 109 unsigned int            numlockmask = 0;
 110 unsigned long           color_focus = 0xff0000; /* XXX should this be per ws? */
 111 unsigned long           color_unfocus = 0x888888;
 112 Display                 *display;
 113 Window                  root;
 114
 115 /* status bar */
 116 int                     bar_enabled = 1;
 117 int                     bar_height = 0;
 118 unsigned long           bar_border = 0x008080;
 119 unsigned long           bar_color = 0x000000;
 120 unsigned long           bar_font_color = 0xa0a0a0;
 121 Window                  bar_window;
 122 GC                      bar_gc;
 123 XGCValues               bar_gcv;
 124 XFontStruct             *bar_fs;
 125 char                    bar_text[128];
 126 char                    *bar_fonts[] = {
 127                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 128                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 129                             NULL
 130 };
 131
 132 /* terminal + args */
 133 char                            *spawn_term[] = { "xterm", NULL };
 134 char                            *spawn_menu[] = { "dmenu_run", NULL };
 135 char                            *spawn_scrotwm[] = { "scrotwm", NULL };
 136
 137 /* layout manager data */
 138 void    stack(void);
 139 void    vertical_init(void);
 140 void    vertical_stack(void);
 141 void    horizontal_init(void);
 142 void    horizontal_stack(void);
 143 void    max_init(void);
 144 void    max_stack(void);
 145
 146 struct layout {
 147         void                    (*l_init)(void);        /* init/reset */
 148         void                    (*l_stack)(void);       /* restack windows */
 149 } layouts[] =  {
 150         /* init                 stack */
 151         { vertical_init,        vertical_stack},
 152         { horizontal_init,      horizontal_stack},
 153         /* XXX not working yet
 154          * { max_init,          max_stack},
 155          */
 156         { NULL,                 NULL},
 157 };
 158
 159 struct ws_win {
 160         TAILQ_ENTRY(ws_win)     entry;
 161         Window                  id;
 162         int                     x;
 163         int                     y;
 164         int                     width;
 165         int                     height;
 166         int                     floating;
 167         int                     transient;
 168         XWindowAttributes       wa;
 169 };
 170
 171 TAILQ_HEAD(ws_win_list, ws_win);
 172
 173 /* define work spaces */
 174 #define SWM_WS_MAX              (10)
 175 struct workspace {
 176         int                     visible;        /* workspace visible */
 177         int                     restack;        /* restack on switch */
 178         struct layout           *cur_layout;    /* current layout handlers */
 179         struct ws_win           *focus;         /* which win has focus */
 180         struct ws_win_list      winlist;        /* list of windows in ws */
 181 } ws[SWM_WS_MAX];
 182 int                     current_ws = 0;
 183
 184 /* args to functions */
 185 union arg {
 186         int                     id;
 187 #define SWM_ARG_ID_FOCUSNEXT    (0)
 188 #define SWM_ARG_ID_FOCUSPREV    (1)
 189 #define SWM_ARG_ID_FOCUSMAIN    (2)
 190 #define SWM_ARG_ID_SWAPNEXT     (3)
 191 #define SWM_ARG_ID_SWAPPREV     (4)
 192 #define SWM_ARG_ID_SWAPMAIN     (5)
 193         char                    **argv;
 194 };
 195
 196
 197
 198 #define SWM_CONF_WS     "\n= \t"
 199 #define SWM_CONF_FILE   "scrotwm.conf"
 200 int
 201 conf_load(char *filename)
 202 {
 203         FILE                    *config;
 204         char                    *line, *cp, *var, *val;
 205         size_t                   len, lineno = 0;
 206
 207         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 208
 209         if (filename == NULL)
 210                 return (1);
 211
 212         if ((config = fopen(filename, "r")) == NULL)
 213                 return (1);
 214
 215         for (;;) {
 216                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 217                         if (feof(config))
 218                                 break;
 219                 cp = line;
 220                 cp += (long)strspn(cp, SWM_CONF_WS);
 221                 if (cp[0] == '\0') {
 222                         /* empty line */
 223                         free(line);
 224                         continue;
 225                 }
 226                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 227                         break;
 228                 cp += (long)strspn(cp, SWM_CONF_WS);
 229                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 230                         break;
 231
 232                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 233                 switch (var[0]) {
 234                 case 'b':
 235                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 236                                 bar_enabled = atoi(val);
 237                         else if (!strncmp(var, "bar_border",
 238                             strlen("bar_border")))
 239                                 bar_border = strtol(val, NULL, 16);
 240                         else if (!strncmp(var, "bar_color",
 241                             strlen("bar_color")))
 242                                 bar_color = strtol(val, NULL, 16);
 243                         else if (!strncmp(var, "bar_font_color",
 244                             strlen("bar_font_color")))
 245                                 bar_font_color = strtol(val, NULL, 16);
 246                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 247                                 asprintf(&bar_fonts[0], "%s", val);
 248                         else
 249                                 goto bad;
 250                         break;
 251
 252                 case 'c':
 253                         if (!strncmp(var, "color_focus", strlen("color_focus")))
 254                                 color_focus = strtol(val, NULL, 16);
 255                         else if (!strncmp(var, "color_unfocus",
 256                             strlen("color_unfocus")))
 257                                 color_unfocus = strtol(val, NULL, 16);
 258                         else
 259                                 goto bad;
 260                         break;
 261
 262                 case 's':
 263                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 264                                 asprintf(&spawn_term[0], "%s", val); /* XXX args? */
 265                         break;
 266                 default:
 267                         goto bad;
 268                 }
 269                 free(line);
 270         }
 271
 272         fclose(config);
 273         return (0);
 274 bad:
 275         errx(1, "invalid conf file entry: %s=%s", var, val);
 276 }
 277
 278 void
 279 bar_print(void)
 280 {
 281         time_t                  tmt;
 282         struct tm               tm;
 283
 284         if (bar_enabled == 0)
 285                 return;
 286
 287         /* clear old text */
 288         XSetForeground(display, bar_gc, bar_color);
 289         XDrawString(display, bar_window, bar_gc, 4, bar_fs->ascent, bar_text,
 290             strlen(bar_text));
 291
 292         /* draw new text */
 293         time(&tmt);
 294         localtime_r(&tmt, &tm);
 295         strftime(bar_text, sizeof bar_text, "%a %b %d %R %Z %Y", &tm);
 296         XSetForeground(display, bar_gc, bar_font_color);
 297         XDrawString(display, bar_window, bar_gc, 4, bar_fs->ascent, bar_text,
 298             strlen(bar_text));
 299         XSync(display, False);
 300
 301         alarm(60);
 302 }
 303
 304 void
 305 bar_signal(int sig)
 306 {
 307         /* XXX yeah yeah byte me */
 308         bar_print();
 309 }
 310
 311 void
 312 bar_toggle(union arg *args)
 313 {
 314         int i;
 315
 316         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 317
 318         if (bar_enabled) {
 319                 bar_enabled = 0;
 320                 height += bar_height; /* correct screen height */
 321                 XUnmapWindow(display, bar_window);
 322         } else {
 323                 bar_enabled = 1;
 324                 height -= bar_height; /* correct screen height */
 325                 XMapWindow(display, bar_window);
 326         }
 327         XSync(display, False);
 328         for (i = 0; i < SWM_WS_MAX; i++)
 329                 ws[i].restack = 1;
 330
 331         stack();
 332         bar_print(); /* must be after stack */
 333 }
 334
 335 void
 336 bar_setup(void)
 337 {
 338         int                     i;
 339
 340         for (i = 0; bar_fonts[i] != NULL; i++) {
 341                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 342                 if (bar_fs)
 343                         break;
 344         }
 345         if (bar_fonts[i] == NULL)
 346                         errx(1, "couldn't load font");
 347         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 348
 349         bar_window = XCreateSimpleWindow(display, root, 0, 0, width,
 350             bar_height - 2, 1, bar_border, bar_color);
 351         bar_gc = XCreateGC(display, bar_window, 0, &bar_gcv);
 352         XSetFont(display, bar_gc, bar_fs->fid);
 353         XSelectInput(display, bar_window, VisibilityChangeMask);
 354         if (bar_enabled) {
 355                 height -= bar_height; /* correct screen height */
 356                 XMapWindow(display, bar_window);
 357         }
 358         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %d\n", (int)bar_window);
 359
 360         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 361                 err(1, "could not install bar_signal");
 362         bar_print();
 363 }
 364
 365 int
 366 count_win(int wsid, int count_transient)
 367 {
 368         struct ws_win           *win;
 369         int                     count = 0;
 370
 371         TAILQ_FOREACH (win, &ws[wsid].winlist, entry) {
 372                 if (count_transient == 0 && win->transient)
 373                         continue;
 374                 count++;
 375         }
 376         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 377
 378         return (count);
 379 }
 380 void
 381 quit(union arg *args)
 382 {
 383         DNPRINTF(SWM_D_MISC, "quit\n");
 384         running = 0;
 385 }
 386
 387
 388 void
 389 restart(union arg *args)
 390 {
 391         XCloseDisplay(display);
 392         execvp(args->argv[0], args->argv);
 393         fprintf(stderr, "execvp failed\n");
 394         perror(" failed");
 395         quit(NULL);
 396 }
 397
 398 void
 399 spawn(union arg *args)
 400 {
 401         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 402         /*
 403          * The double-fork construct avoids zombie processes and keeps the code
 404          * clean from stupid signal handlers.
 405          */
 406         if(fork() == 0) {
 407                 if(fork() == 0) {
 408                         if(display)
 409                                 close(ConnectionNumber(display));
 410                         setsid();
 411                         execvp(args->argv[0], args->argv);
 412                         fprintf(stderr, "execvp failed\n");
 413                         perror(" failed");
 414                 }
 415                 exit(0);
 416         }
 417         wait(0);
 418 }
 419
 420 void
 421 focus_win(struct ws_win *win)
 422 {
 423         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win->id);
 424         XSetWindowBorder(display, win->id, color_focus);
 425         XSetInputFocus(display, win->id, RevertToPointerRoot, CurrentTime);
 426         ws[current_ws].focus = win;
 427 }
 428
 429 void
 430 unfocus_win(struct ws_win *win)
 431 {
 432         DNPRINTF(SWM_D_FOCUS, "unfocus_win: id: %lu\n", win->id);
 433         XSetWindowBorder(display, win->id, color_unfocus);
 434         if (ws[current_ws].focus == win)
 435                 ws[current_ws].focus = NULL;
 436 }
 437
 438 void
 439 switchws(union arg *args)
 440 {
 441         int                     wsid = args->id;
 442         struct ws_win           *win;
 443
 444         DNPRINTF(SWM_D_WS, "switchws: %d\n", wsid + 1);
 445
 446         if (wsid == current_ws)
 447                 return;
 448
 449         /* map new window first to prevent ugly blinking */
 450         TAILQ_FOREACH (win, &ws[wsid].winlist, entry)
 451                 XMapRaised(display, win->id);
 452         ws[wsid].visible = 1;
 453
 454         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry)
 455                 XUnmapWindow(display, win->id);
 456         ws[current_ws].visible = 0;
 457
 458         current_ws = wsid;
 459
 460         ignore_enter = 1;
 461         if (ws[wsid].restack) {
 462                 stack();
 463                 bar_print();
 464         } else {
 465                 if (ws[wsid].focus != NULL)
 466                         focus_win(ws[wsid].focus);
 467                 XSync(display, False);
 468         }
 469 }
 470
 471 void
 472 swapwin(union arg *args)
 473 {
 474         struct ws_win           *target;
 475
 476         DNPRINTF(SWM_D_MOVE, "swapwin: id %d\n", args->id);
 477         if (ws[current_ws].focus == NULL)
 478                 return;
 479
 480         switch (args->id) {
 481         case SWM_ARG_ID_SWAPPREV:
 482                 target = TAILQ_PREV(ws[current_ws].focus, ws_win_list, entry);
 483                 TAILQ_REMOVE(&ws[current_ws].winlist,
 484                     ws[current_ws].focus, entry);
 485                 if (target == NULL)
 486                         TAILQ_INSERT_TAIL(&ws[current_ws].winlist,
 487                             ws[current_ws].focus, entry);
 488                 else
 489                         TAILQ_INSERT_BEFORE(target, ws[current_ws].focus,
 490                             entry);
 491                 break;
 492         case SWM_ARG_ID_SWAPNEXT:
 493                 target = TAILQ_NEXT(ws[current_ws].focus, entry);
 494                 TAILQ_REMOVE(&ws[current_ws].winlist,
 495                     ws[current_ws].focus, entry);
 496                 if (target == NULL)
 497                         TAILQ_INSERT_HEAD(&ws[current_ws].winlist,
 498                             ws[current_ws].focus, entry);
 499                 else
 500                         TAILQ_INSERT_AFTER(&ws[current_ws].winlist, target,
 501                             ws[current_ws].focus, entry);
 502                 break;
 503         case SWM_ARG_ID_SWAPMAIN:
 504                 target = TAILQ_FIRST(&ws[current_ws].winlist);
 505                 if (target == ws[current_ws].focus)
 506                         return;
 507                 TAILQ_REMOVE(&ws[current_ws].winlist, target, entry);
 508                 TAILQ_INSERT_BEFORE(ws[current_ws].focus, target, entry);
 509                 TAILQ_REMOVE(&ws[current_ws].winlist,
 510                     ws[current_ws].focus, entry);
 511                 TAILQ_INSERT_HEAD(&ws[current_ws].winlist,
 512                     ws[current_ws].focus, entry);
 513                 break;
 514         default:
 515                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
 516                 return;
 517         }
 518
 519         ignore_enter = 2;
 520         stack();
 521 }
 522
 523 void
 524 focus(union arg *args)
 525 {
 526         struct ws_win           *winfocus, *winlostfocus;
 527
 528         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
 529         if (ws[current_ws].focus == NULL)
 530                 return;
 531
 532         winlostfocus = ws[current_ws].focus;
 533
 534         switch (args->id) {
 535         case SWM_ARG_ID_FOCUSPREV:
 536                 winfocus = TAILQ_PREV(ws[current_ws].focus, ws_win_list, entry);
 537                 if (winfocus == NULL)
 538                         winfocus =
 539                             TAILQ_LAST(&ws[current_ws].winlist, ws_win_list);
 540                 break;
 541
 542         case SWM_ARG_ID_FOCUSNEXT:
 543                 winfocus = TAILQ_NEXT(ws[current_ws].focus, entry);
 544                 if (winfocus == NULL)
 545                         winfocus = TAILQ_FIRST(&ws[current_ws].winlist);
 546                 break;
 547
 548         case SWM_ARG_ID_FOCUSMAIN:
 549                 winfocus = TAILQ_FIRST(&ws[current_ws].winlist);
 550                 break;
 551
 552         default:
 553                 return;
 554         }
 555
 556         if (winfocus == winlostfocus)
 557                 return;
 558
 559         unfocus_win(winlostfocus);
 560         focus_win(winfocus);
 561         XSync(display, False);
 562 }
 563
 564 void
 565 cycle_layout(union arg *args)
 566 {
 567         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", current_ws);
 568
 569         ws[current_ws].cur_layout++;
 570         if (ws[current_ws].cur_layout->l_stack == NULL)
 571                 ws[current_ws].cur_layout = &layouts[0];
 572         stack();
 573 }
 574
 575 void
 576 stack(void) {
 577         DNPRINTF(SWM_D_EVENT, "stack: workspace: %d\n", current_ws);
 578
 579         ws[current_ws].restack = 0;
 580
 581         ws[current_ws].cur_layout->l_stack();
 582
 583         XSync(display, False);
 584 }
 585
 586 void
 587 vertical_init(void)
 588 {
 589         DNPRINTF(SWM_D_EVENT, "vertical_init: workspace: %d\n", current_ws);
 590 }
 591
 592 /* I know this sucks but it works well enough */
 593 void
 594 vertical_stack(void) {
 595         XWindowChanges          wc;
 596         struct ws_win           wf, *win, *winfocus = &wf;
 597         int                     i, h, w, x, y, hrh, winno;
 598         int floater = 0;
 599         unsigned int mask;
 600
 601         DNPRINTF(SWM_D_EVENT, "vertical_stack: workspace: %d\n", current_ws);
 602
 603         winfocus->id = root;
 604
 605         winno = count_win(current_ws, 0);
 606         if (winno == 0)
 607                 return;
 608
 609         if (winno > 1)
 610                 w = width / 2;
 611         else
 612                 w = width;
 613
 614         if (winno > 2)
 615                 hrh = height / (winno - 1);
 616         else
 617                 hrh = 0;
 618
 619         x = 0;
 620         y = bar_enabled ? bar_height : 0;
 621         h = height;
 622         i = 0;
 623         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
 624                 if (i == 1) {
 625                         x += w + 2;
 626                         w -= 2;
 627                 }
 628                 if (i != 0 && hrh != 0) {
 629                         /* correct the last window for lost pixels */
 630                         if (win == TAILQ_LAST(&ws[current_ws].winlist,
 631                             ws_win_list)) {
 632                                 h = height - (i * hrh);
 633                                 if (h == 0)
 634                                         h = hrh;
 635                                 else
 636                                         h += hrh;
 637                                 y += hrh;
 638                         } else {
 639                                 h = hrh - 2;
 640                                 /* leave first right hand window at y = 0 */
 641                                 if (i > 1)
 642                                         y += h + 2;
 643                         }
 644                 }
 645
 646                 if (win->transient != 0 || win->floating != 0)
 647                         floater = 1;
 648                 else
 649                         floater = 0;
 650
 651                 bzero(&wc, sizeof wc);
 652                 wc.border_width = 1;
 653                 if (floater == 0) {
 654                         win->x = wc.x = x;
 655                         win->y = wc.y = y;
 656                         win->width = wc.width = w;
 657                         win->height = wc.height = h;
 658                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
 659                 } else {
 660                         /* make sure we don't clobber the screen */
 661                         if (win->wa.width > width)
 662                                 win->wa.width = width;
 663                         if (win->wa.height > height)
 664                                 win->wa.width = height;
 665                         win->x = wc.x = (width - win->wa.width) / 2;
 666                         win->y = wc.y = (height - win->wa.height) / 2;
 667                         mask = CWX | CWY | CWBorderWidth;
 668                 }
 669                 XConfigureWindow(display, win->id, mask, &wc);
 670
 671                 if (win == ws[current_ws].focus)
 672                         winfocus = win;
 673                 else
 674                         unfocus_win(win);
 675                 XMapRaised(display, win->id);
 676                 i++;
 677         }
 678
 679         focus_win(winfocus); /* this has to be done outside of the loop */
 680 }
 681
 682 void
 683 horizontal_init(void)
 684 {
 685         DNPRINTF(SWM_D_EVENT, "horizontal_init: workspace: %d\n", current_ws);
 686 }
 687
 688 void
 689 horizontal_stack(void) {
 690         XWindowChanges          wc;
 691         struct ws_win           wf, *win, *winfocus = &wf;
 692         int                     i, h, w, x, y, hrw, winno;
 693         int floater = 0;
 694         unsigned int mask;
 695
 696         DNPRINTF(SWM_D_EVENT, "horizontal_stack: workspace: %d\n", current_ws);
 697
 698         winfocus->id = root;
 699
 700         winno = count_win(current_ws, 0);
 701         if (winno == 0)
 702                 return;
 703
 704         if (winno > 1)
 705                 h = height / 2;
 706         else
 707                 h = height;
 708
 709         if (winno > 2)
 710                 hrw = width / (winno - 1);
 711         else
 712                 hrw = 0;
 713
 714         x = 0;
 715         y = bar_enabled ? bar_height : 0;
 716         w = width;
 717         i = 0;
 718         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
 719                 if (i == 1) {
 720                         y += h + 2;
 721                         h -= 2;
 722                 }
 723                 if (i != 0 && hrw != 0) {
 724                         /* correct the last window for lost pixels */
 725                         if (win == TAILQ_LAST(&ws[current_ws].winlist,
 726                             ws_win_list)) {
 727                                 w = width - (i * hrw);
 728                                 if (w == 0)
 729                                         w = hrw;
 730                                 else
 731                                         w += hrw;
 732                                 x += hrw;
 733                         } else {
 734                                 w = hrw - 2;
 735                                 /* leave first bottom window at x = 0 */
 736                                 if (i > 1)
 737                                         x += w + 2;
 738                         }
 739                 }
 740
 741                 if (win->transient != 0 || win->floating != 0)
 742                         floater = 1;
 743                 else
 744                         floater = 0;
 745
 746                 bzero(&wc, sizeof wc);
 747                 wc.border_width = 1;
 748                 if (floater == 0) {
 749                         win->x = wc.x = x;
 750                         win->y = wc.y = y;
 751                         win->width = wc.width = w;
 752                         win->height = wc.height = h;
 753                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
 754                 } else {
 755                         /* make sure we don't clobber the screen */
 756                         if (win->wa.width > width)
 757                                 win->wa.width = width;
 758                         if (win->wa.height > height)
 759                                 win->wa.width = height;
 760                         win->x = wc.x = (width - win->wa.width) / 2;
 761                         win->y = wc.y = (height - win->wa.height) / 2;
 762                         mask = CWX | CWY | CWBorderWidth;
 763                 }
 764                 XConfigureWindow(display, win->id, mask, &wc);
 765
 766                 if (win == ws[current_ws].focus)
 767                         winfocus = win;
 768                 else
 769                         unfocus_win(win);
 770                 XMapRaised(display, win->id);
 771                 i++;
 772         }
 773
 774         focus_win(winfocus); /* this has to be done outside of the loop */
 775 }
 776
 777 /* fullscreen view */
 778 void
 779 max_init(void)
 780 {
 781         DNPRINTF(SWM_D_EVENT, "max_init: workspace: %d\n", current_ws);
 782 }
 783
 784 void
 785 max_stack(void) {
 786         XWindowChanges          wc;
 787         struct ws_win           wf, *win, *winfocus = &wf;
 788         int                     i, h, w, x, y, winno;
 789         unsigned int mask;
 790
 791         DNPRINTF(SWM_D_EVENT, "max_stack: workspace: %d\n", current_ws);
 792
 793         winfocus->id = root;
 794
 795         winno = count_win(current_ws, 0);
 796         if (winno == 0)
 797                 return;
 798
 799         x = 0;
 800         y = bar_enabled ? bar_height : 0;
 801         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
 802                 if (i == 1 && win->transient == 0 && win->floating != 0) {
 803                         h = height - 2;
 804                         w = width - 2;
 805
 806                         winfocus = win;
 807
 808                         bzero(&wc, sizeof wc);
 809                         wc.border_width = 1;
 810                         win->x = wc.x = x;
 811                         win->y = wc.y = y;
 812                         win->width = wc.width = w;
 813                         win->height = wc.height = h;
 814                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
 815                         XConfigureWindow(display, win->id, mask, &wc);
 816
 817                         XMapRaised(display, win->id);
 818                 } else {
 819                         /* hide all but the master window */
 820                         XUnmapWindow(display, win->id);
 821                 }
 822                 i++;
 823         }
 824
 825         focus_win(winfocus); /* this has to be done outside of the loop */
 826 }
 827
 828 void
 829 send_to_ws(union arg *args)
 830 {
 831         int                     wsid = args->id;
 832         struct ws_win           *win = ws[current_ws].focus;
 833
 834         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
 835
 836         XUnmapWindow(display, win->id);
 837
 838         /* find a window to focus */
 839         ws[current_ws].focus = TAILQ_PREV(win, ws_win_list, entry);
 840         if (ws[current_ws].focus == NULL)
 841                 ws[current_ws].focus = TAILQ_FIRST(&ws[current_ws].winlist);
 842         if (ws[current_ws].focus == win)
 843                 ws[current_ws].focus = NULL;
 844
 845         TAILQ_REMOVE(&ws[current_ws].winlist, win, entry);
 846
 847         TAILQ_INSERT_TAIL(&ws[wsid].winlist, win, entry);
 848         if (count_win(wsid, 1) == 0)
 849                 ws[wsid].focus = win;
 850         ws[wsid].restack = 1;
 851
 852         stack();
 853 }
 854
 855 /* key definitions */
 856 struct key {
 857         unsigned int            mod;
 858         KeySym                  keysym;
 859         void                    (*func)(union arg *);
 860         union arg               args;
 861 } keys[] = {
 862         /* modifier             key     function                argument */
 863         /* XXX alt-c is temporary, until I figure out how to grab spacebar */
 864         { MODKEY,               XK_c,           cycle_layout,   {0} },
 865         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
 866         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
 867         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
 868         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
 869         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
 870         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
 871         { MODKEY,               XK_p,           spawn,          {.argv = spawn_menu} },
 872         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
 873         { MODKEY,               XK_q,           restart,        {.argv = spawn_scrotwm } },
 874         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
 875         { MODKEY,               XK_1,           switchws,       {.id = 0} },
 876         { MODKEY,               XK_2,           switchws,       {.id = 1} },
 877         { MODKEY,               XK_3,           switchws,       {.id = 2} },
 878         { MODKEY,               XK_4,           switchws,       {.id = 3} },
 879         { MODKEY,               XK_5,           switchws,       {.id = 4} },
 880         { MODKEY,               XK_6,           switchws,       {.id = 5} },
 881         { MODKEY,               XK_7,           switchws,       {.id = 6} },
 882         { MODKEY,               XK_8,           switchws,       {.id = 7} },
 883         { MODKEY,               XK_9,           switchws,       {.id = 8} },
 884         { MODKEY,               XK_0,           switchws,       {.id = 9} },
 885         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
 886         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
 887         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
 888         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
 889         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
 890         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
 891         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
 892         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
 893         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
 894         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
 895         { MODKEY,               XK_b,           bar_toggle,     {0} },
 896         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
 897         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
 898 };
 899
 900 void
 901 updatenumlockmask(void)
 902 {
 903         unsigned int            i, j;
 904         XModifierKeymap         *modmap;
 905
 906         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
 907         numlockmask = 0;
 908         modmap = XGetModifierMapping(display);
 909         for (i = 0; i < 8; i++)
 910                 for (j = 0; j < modmap->max_keypermod; j++)
 911                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
 912                           == XKeysymToKeycode(display, XK_Num_Lock))
 913                                 numlockmask = (1 << i);
 914
 915         XFreeModifiermap(modmap);
 916 }
 917
 918 void
 919 grabkeys(void)
 920 {
 921         unsigned int            i, j;
 922         KeyCode                 code;
 923         unsigned int            modifiers[] =
 924             { 0, LockMask, numlockmask, numlockmask | LockMask };
 925
 926         DNPRINTF(SWM_D_MISC, "grabkeys\n");
 927         updatenumlockmask();
 928
 929         XUngrabKey(display, AnyKey, AnyModifier, root);
 930         for(i = 0; i < LENGTH(keys); i++) {
 931                 if((code = XKeysymToKeycode(display, keys[i].keysym)))
 932                         for(j = 0; j < LENGTH(modifiers); j++)
 933                                 XGrabKey(display, code,
 934                                     keys[i].mod | modifiers[j], root,
 935                                     True, GrabModeAsync, GrabModeAsync);
 936         }
 937 }
 938 void
 939 expose(XEvent *e)
 940 {
 941         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
 942 }
 943
 944 void
 945 keypress(XEvent *e)
 946 {
 947         unsigned int            i;
 948         KeySym                  keysym;
 949         XKeyEvent               *ev = &e->xkey;
 950
 951         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
 952
 953         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
 954         for(i = 0; i < LENGTH(keys); i++)
 955                 if(keysym == keys[i].keysym
 956                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
 957                    && keys[i].func)
 958                         keys[i].func(&(keys[i].args));
 959 }
 960
 961 void
 962 buttonpress(XEvent *e)
 963 {
 964         XButtonPressedEvent     *ev = &e->xbutton;
 965 #ifdef SWM_CLICKTOFOCUS
 966         struct ws_win           *win;
 967 #endif
 968
 969
 970         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
 971
 972         if (ev->window == root)
 973                 return;
 974         if (ev->window == ws[current_ws].focus->id)
 975                 return;
 976 #ifdef SWM_CLICKTOFOCUS
 977         TAILQ_FOREACH(win, &ws[current_ws].winlist, entry)
 978                 if (win->id == ev->window) {
 979                         /* focus in the clicked window */
 980                         XSetWindowBorder(display, ev->window, 0xff0000);
 981                         XSetWindowBorder(display,
 982                             ws[current_ws].focus->id, 0x888888);
 983                         XSetInputFocus(display, ev->window, RevertToPointerRoot,
 984                             CurrentTime);
 985                         ws[current_ws].focus = win;
 986                         XSync(display, False);
 987                         break;
 988         }
 989 #endif
 990 }
 991
 992 struct ws_win *
 993 manage_window(Window id)
 994 {
 995         struct ws_win           *win;
 996
 997         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
 998                 if (win->id == id)
 999                         return (win);   /* already being managed */
1000         }
1001
1002         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1003                 errx(1, "calloc: failed to allocate memory for new window");
1004
1005         win->id = id;
1006         TAILQ_INSERT_TAIL(&ws[current_ws].winlist, win, entry);
1007
1008         XSelectInput(display, id, ButtonPressMask | EnterWindowMask |
1009             FocusChangeMask | ExposureMask);
1010
1011         return win;
1012 }
1013
1014
1015 void
1016 configurerequest(XEvent *e)
1017 {
1018         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1019         Window                  trans;
1020         struct ws_win           *win;
1021
1022         DNPRINTF(SWM_D_EVENT, "configurerequest: window: %lu\n", ev->window);
1023
1024
1025         win = manage_window(ev->window);
1026         ws[current_ws].focus = win; /* make new win focused */
1027
1028         XGetTransientForHint(display, win->id, &trans);
1029         if (trans) {
1030                 win->transient = trans;
1031                 DNPRINTF(SWM_D_MISC, "configurerequest: win %u transient %u\n",
1032                     (unsigned)win->id, win->transient);
1033         }
1034         XGetWindowAttributes(display, win->id, &win->wa);
1035 #if 0
1036         XClassHint ch = { 0 };
1037         if(XGetClassHint(display, win->id, &ch)) {
1038                 fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name);
1039                 if (!strcmp(ch.res_class, "Gvim") && !strcmp(ch.res_name, "gvim")) {
1040                         win->floating = 0;
1041                 }
1042                 if(ch.res_class)
1043                         XFree(ch.res_class);
1044                 if(ch.res_name)
1045                         XFree(ch.res_name);
1046         }
1047 #endif
1048         stack();
1049 }
1050
1051 void
1052 configurenotify(XEvent *e)
1053 {
1054         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1055             e->xconfigure.window);
1056 }
1057
1058 void
1059 destroynotify(XEvent *e)
1060 {
1061         struct ws_win           *win;
1062         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1063
1064         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1065
1066         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
1067                 if (ev->window == win->id) {
1068                         /* find a window to focus */
1069                         ws[current_ws].focus = TAILQ_PREV(win,
1070                             ws_win_list, entry);
1071                         if (ws[current_ws].focus == NULL)
1072                                 ws[current_ws].focus =
1073                                     TAILQ_FIRST(&ws[current_ws].winlist);
1074                         if (win == ws[current_ws].focus)
1075                                 ws[current_ws].focus = NULL;
1076
1077                         TAILQ_REMOVE(&ws[current_ws].winlist, win, entry);
1078                         free(win);
1079                         break;
1080                 }
1081         }
1082
1083         stack();
1084 }
1085
1086 void
1087 enternotify(XEvent *e)
1088 {
1089         XCrossingEvent          *ev = &e->xcrossing;
1090         struct ws_win           *win;
1091
1092         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1093
1094         if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) &&
1095             ev->window != root)
1096                 return;
1097         if (ignore_enter) {
1098                 /* eat event(s) to prevent autofocus */
1099                 ignore_enter--;
1100                 return;
1101         }
1102         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
1103                 if (win->id == ev->window)
1104                         focus_win(win);
1105                 else
1106                         unfocus_win(win);
1107         }
1108 }
1109
1110 void
1111 focusin(XEvent *e)
1112 {
1113         XFocusChangeEvent       *ev = &e->xfocus;
1114
1115         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", ev->window);
1116
1117         XSync(display, False); /* not sure this helps redrawing graphic apps */
1118
1119         if (ev->window == root)
1120                 return;
1121         /*
1122          * kill grab for now so that we can cut and paste , this screws up
1123          * click to focus
1124          */
1125         /*
1126         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu grabbing\n", ev->window);
1127         XGrabButton(display, Button1, AnyModifier, ev->window, False,
1128             ButtonPress, GrabModeAsync, GrabModeSync, None, None);
1129         */
1130 }
1131
1132 void
1133 mappingnotify(XEvent *e)
1134 {
1135         XMappingEvent           *ev = &e->xmapping;
1136
1137         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1138
1139         XRefreshKeyboardMapping(ev);
1140         if(ev->request == MappingKeyboard)
1141                 grabkeys();
1142 }
1143
1144 void
1145 maprequest(XEvent *e)
1146 {
1147         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1148             e->xmaprequest.window);
1149
1150         manage_window(e->xmaprequest.window);
1151         stack();
1152 }
1153
1154 void
1155 propertynotify(XEvent *e)
1156 {
1157         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
1158             e->xproperty.window);
1159 }
1160
1161 void
1162 unmapnotify(XEvent *e)
1163 {
1164         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
1165 }
1166
1167 void
1168 visibilitynotify(XEvent *e)
1169 {
1170         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n", e->xvisibility.window);
1171
1172         if (e->xvisibility.window == bar_window &&
1173             e->xvisibility.state == VisibilityUnobscured)
1174                 bar_print();
1175 }
1176
1177 void                    (*handler[LASTEvent])(XEvent *) = {
1178                                 [Expose] = expose,
1179                                 [KeyPress] = keypress,
1180                                 [ButtonPress] = buttonpress,
1181                                 [ConfigureRequest] = configurerequest,
1182                                 [ConfigureNotify] = configurenotify,
1183                                 [DestroyNotify] = destroynotify,
1184                                 [EnterNotify] = enternotify,
1185                                 [FocusIn] = focusin,
1186                                 [MappingNotify] = mappingnotify,
1187                                 [MapRequest] = maprequest,
1188                                 [PropertyNotify] = propertynotify,
1189                                 [UnmapNotify] = unmapnotify,
1190                                 [VisibilityNotify] = visibilitynotify,
1191 };
1192
1193 int
1194 xerror_start(Display *d, XErrorEvent *ee)
1195 {
1196         other_wm = 1;
1197         return (-1);
1198 }
1199
1200 int
1201 xerror(Display *d, XErrorEvent *ee)
1202 {
1203         fprintf(stderr, "error: %p %p\n", display, ee);
1204
1205         return (-1);
1206 }
1207
1208 int
1209 active_wm(void)
1210 {
1211         other_wm = 0;
1212         xerrorxlib = XSetErrorHandler(xerror_start);
1213
1214         /* this causes an error if some other window manager is running */
1215         XSelectInput(display, DefaultRootWindow(display),
1216             SubstructureRedirectMask);
1217         XSync(display, False);
1218         if(other_wm)
1219                 return (1);
1220
1221         XSetErrorHandler(xerror);
1222         XSync(display, False);
1223         return (0);
1224 }
1225
1226 int
1227 main(int argc, char *argv[])
1228 {
1229         struct passwd           *pwd;
1230         char                    conf[PATH_MAX], *cfile = NULL;
1231         struct stat             sb;
1232         XEvent                  e;
1233         unsigned int            i, num;
1234         Window                  d1, d2, *wins = NULL;
1235         XWindowAttributes       wa;
1236
1237         fprintf(stderr, "Welcome to scrotwm V%s\n", SWM_VERSION);
1238         if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
1239                 warnx("no locale support");
1240
1241         if(!(display = XOpenDisplay(0)))
1242                 errx(1, "can not open display");
1243
1244         if (active_wm())
1245                 errx(1, "other wm running");
1246
1247         screen = DefaultScreen(display);
1248         root = RootWindow(display, screen);
1249         width = DisplayWidth(display, screen) - 2;
1250         height = DisplayHeight(display, screen) - 2;
1251
1252         /* look for local and global conf file */
1253         pwd = getpwuid(getuid());
1254         if (pwd == NULL)
1255                 errx(1, "invalid user %d", getuid());
1256
1257         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
1258         if (stat(conf, &sb) != -1) {
1259                 if (S_ISREG(sb.st_mode))
1260                         cfile = conf;
1261         } else {
1262                 /* try global conf file */
1263                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
1264                 if (!stat(conf, &sb))
1265                         if (S_ISREG(sb.st_mode))
1266                                 cfile = conf;
1267         }
1268         if (cfile)
1269                 conf_load(cfile);
1270
1271         /* init all workspaces */
1272         for (i = 0; i < SWM_WS_MAX; i++) {
1273                 ws[i].visible = 0;
1274                 ws[i].restack = 1;
1275                 ws[i].focus = NULL;
1276                 TAILQ_INIT(&ws[i].winlist);
1277                 ws[i].cur_layout = &layouts[0];
1278         }
1279         /* make work space 1 active */
1280         ws[0].visible = 1;
1281
1282         /* grab existing windows */
1283         if (XQueryTree(display, root, &d1, &d2, &wins, &num)) {
1284                 for (i = 0; i < num; i++) {
1285                         if (!XGetWindowAttributes(display, wins[i], &wa)
1286                             || wa.override_redirect ||
1287                             XGetTransientForHint(display, wins[i], &d1))
1288                                 continue;
1289                         manage_window(wins[i]);
1290                 }
1291                 if(wins)
1292                         XFree(wins);
1293         }
1294         ws[0].focus = TAILQ_FIRST(&ws[0].winlist);
1295
1296         /* setup status bar */
1297         bar_setup();
1298
1299         XSelectInput(display, root, SubstructureRedirectMask |
1300             SubstructureNotifyMask | ButtonPressMask | KeyPressMask |
1301             EnterWindowMask | LeaveWindowMask | StructureNotifyMask |
1302             FocusChangeMask | PropertyChangeMask | ExposureMask);
1303
1304         grabkeys();
1305         stack();
1306
1307         while (running) {
1308                 XNextEvent(display, &e);
1309                 if (handler[e.type])
1310                         handler[e.type](&e);
1311         }
1312
1313         XCloseDisplay(display);
1314
1315         return (0);
1316 }