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 <errno.h>
  57 #include <locale.h>
  58 #include <unistd.h>
  59 #include <time.h>
  60 #include <signal.h>
  61 #include <string.h>
  62 #include <util.h>
  63 #include <pwd.h>
  64 #include <ctype.h>
  65
  66 #include <sys/types.h>
  67 #include <sys/time.h>
  68 #include <sys/stat.h>
  69 #include <sys/wait.h>
  70 #include <sys/queue.h>
  71 #include <sys/param.h>
  72 #include <sys/select.h>
  73
  74 #include <X11/cursorfont.h>
  75 #include <X11/keysym.h>
  76 #include <X11/Xatom.h>
  77 #include <X11/Xlib.h>
  78 #include <X11/Xproto.h>
  79 #include <X11/Xutil.h>
  80 #include <X11/extensions/Xrandr.h>
  81
  82 #if RANDR_MAJOR < 1
  83 #  error XRandR versions less than 1.0 are not supported
  84 #endif
  85
  86 #if RANDR_MAJOR >= 1
  87 #if RANDR_MINOR >= 2
  88 #define SWM_XRR_HAS_CRTC
  89 #endif
  90 #endif
  91
  92 /* #define SWM_DEBUG */
  93 #ifdef SWM_DEBUG
  94 #define DPRINTF(x...)           do { if (swm_debug) fprintf(stderr, x); } while(0)
  95 #define DNPRINTF(n,x...)        do { if (swm_debug & n) fprintf(stderr, x); } while(0)
  96 #define SWM_D_MISC              0x0001
  97 #define SWM_D_EVENT             0x0002
  98 #define SWM_D_WS                0x0004
  99 #define SWM_D_FOCUS             0x0008
 100 #define SWM_D_MOVE              0x0010
 101 #define SWM_D_STACK             0x0020
 102
 103 u_int32_t               swm_debug = 0
 104                             | SWM_D_MISC
 105                             | SWM_D_EVENT
 106                             | SWM_D_WS
 107                             | SWM_D_FOCUS
 108                             | SWM_D_MOVE
 109                             | SWM_D_STACK
 110                             ;
 111 #else
 112 #define DPRINTF(x...)
 113 #define DNPRINTF(n,x...)
 114 #endif
 115
 116 #define LENGTH(x)               (sizeof x / sizeof x[0])
 117 #define MODKEY                  Mod1Mask
 118 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
 119
 120 #define X(r)            (r)->g.x
 121 #define Y(r)            (r)->g.y
 122 #define WIDTH(r)        (r)->g.w
 123 #define HEIGHT(r)       (r)->g.h
 124
 125 char                    **start_argv;
 126 Atom                    astate;
 127 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 128 int                     other_wm;
 129 int                     running = 1;
 130 int                     xrandr_eventbase;
 131 int                     ignore_enter = 0;
 132 unsigned int            numlockmask = 0;
 133 Display                 *display;
 134
 135 /* dialog windows */
 136 double                  dialog_ratio = .6;
 137 /* status bar */
 138 #define SWM_BAR_MAX     (128)
 139 sig_atomic_t            bar_alarm = 0;
 140 int                     bar_enabled = 1;
 141 int                     bar_verbose = 1;
 142 int                     bar_height = 0;
 143 GC                      bar_gc;
 144 XGCValues               bar_gcv;
 145 XFontStruct             *bar_fs;
 146 char                    *bar_fonts[] = {
 147                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 148                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 149                             NULL
 150 };
 151
 152 /* terminal + args */
 153 char                            *spawn_term[] = { "xterm", NULL };
 154 char                            *spawn_menu[] = { "dmenu_run", NULL };
 155
 156 /* layout manager data */
 157 struct swm_geometry {
 158         int                     x;
 159         int                     y;
 160         int                     w;
 161         int                     h;
 162 };
 163
 164 struct swm_screen;
 165 struct workspace;
 166
 167 /* virtual "screens" */
 168 struct swm_region {
 169         TAILQ_ENTRY(swm_region) entry;
 170         struct swm_geometry     g;
 171         Window                  bar_window;
 172         struct workspace        *ws;    /* current workspace on this region */
 173         struct swm_screen       *s;     /* screen idx */
 174 };
 175 TAILQ_HEAD(swm_region_list, swm_region);
 176
 177
 178 struct ws_win {
 179         TAILQ_ENTRY(ws_win)     entry;
 180         Window                  id;
 181         struct swm_geometry     g;
 182         int                     focus;
 183         int                     floating;
 184         int                     transient;
 185         struct workspace        *ws;    /* always valid */
 186         struct swm_screen       *s;     /* always valid, never changes */
 187         XWindowAttributes       wa;
 188 };
 189 TAILQ_HEAD(ws_win_list, ws_win);
 190
 191 /* layout handlers */
 192 void    stack(void);
 193 void    vertical_config(struct workspace *, int);
 194 void    vertical_stack(struct workspace *, struct swm_geometry *);
 195 void    horizontal_config(struct workspace *, int);
 196 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 197 void    max_stack(struct workspace *, struct swm_geometry *);
 198
 199 struct layout {
 200         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 201         void            (*l_config)(struct workspace *, int);
 202 } layouts[] =  {
 203         /* stack,               configure */
 204         { vertical_stack,       vertical_config},
 205         { horizontal_stack,     horizontal_config},
 206         { max_stack,            NULL},
 207         { NULL,                 NULL},
 208 };
 209
 210 #define SWM_H_SLICE             (32)
 211 #define SWM_V_SLICE             (32)
 212
 213 /* define work spaces */
 214 struct workspace {
 215         int                     idx;            /* workspace index */
 216         int                     restack;        /* restack on switch */
 217         struct layout           *cur_layout;    /* current layout handlers */
 218         struct ws_win           *focus;         /* may be NULL */
 219         struct swm_region       *r;             /* may be NULL */
 220         struct ws_win_list      winlist;        /* list of windows in ws */
 221
 222         /* stacker state */
 223         struct {
 224                                 int horizontal_msize;
 225                                 int horizontal_mwin;
 226                                 int vertical_msize;
 227                                 int vertical_mwin;
 228         } l_state;
 229 };
 230
 231 /* physical screen mapping */
 232 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 233 struct swm_screen {
 234         int                     idx;            /* screen index */
 235         struct swm_region_list  rl;     /* list of regions on this screen */
 236         Window                  root;
 237         int                     xrandr_support;
 238         struct workspace        ws[SWM_WS_MAX];
 239
 240         /* colors */
 241         unsigned long           bar_border;
 242         unsigned long           bar_color;
 243         unsigned long           bar_font_color;
 244         unsigned long           color_focus;            /* XXX should this be per ws? */
 245         unsigned long           color_unfocus;
 246 };
 247 struct swm_screen       *screens;
 248 int                     num_screens;
 249 Window rootclick = 0;
 250
 251 struct ws_win           *cur_focus = NULL;
 252
 253 /* args to functions */
 254 union arg {
 255         int                     id;
 256 #define SWM_ARG_ID_FOCUSNEXT    (0)
 257 #define SWM_ARG_ID_FOCUSPREV    (1)
 258 #define SWM_ARG_ID_FOCUSMAIN    (2)
 259 #define SWM_ARG_ID_SWAPNEXT     (3)
 260 #define SWM_ARG_ID_SWAPPREV     (4)
 261 #define SWM_ARG_ID_SWAPMAIN     (5)
 262 #define SWM_ARG_ID_MASTERSHRINK (6)
 263 #define SWM_ARG_ID_MASTERGROW   (7)
 264 #define SWM_ARG_ID_MASTERADD    (8)
 265 #define SWM_ARG_ID_MASTERDEL    (9)
 266 #define SWM_ARG_ID_STACKRESET   (10)
 267 #define SWM_ARG_ID_STACKINIT    (11)
 268         char                    **argv;
 269 };
 270
 271 unsigned long
 272 name_to_color(char *colorname)
 273 {
 274         Colormap                cmap;
 275         Status                  status;
 276         XColor                  screen_def, exact_def;
 277         unsigned long           result = 0;
 278         char                    cname[32] = "#";
 279
 280         cmap = DefaultColormap(display, screens[0].idx);
 281         status = XAllocNamedColor(display, cmap, colorname,
 282             &screen_def, &exact_def);
 283         if (!status) {
 284                 strlcat(cname, colorname + 2, sizeof cname - 1);
 285                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 286                     &exact_def);
 287         }
 288         if (status)
 289                 result = screen_def.pixel;
 290         else
 291                 fprintf(stderr, "color '%s' not found.\n", colorname);
 292
 293         return (result);
 294 }
 295
 296 int
 297 varmatch(char *var, char *name, int *index)
 298 {
 299         char                    *p, buf[5];
 300         int                     i;
 301
 302         i = strncmp(var, name, 255);
 303         if (index == NULL)
 304                 return (i);
 305
 306         *index = -1;
 307         if (i <= 0)
 308                 return (i);
 309         p = var + strlen(name);
 310         if (*p++ != '[')
 311                 return (i);
 312         bzero(buf, sizeof buf);
 313         i = 0;
 314         while (isdigit(*p) && i < sizeof buf)
 315                 buf[i++] = *p++;
 316         if (i == 0 || i >= sizeof buf || *p != ']')
 317                 return (1);
 318         *index = strtonum(buf, 0, 99, NULL);
 319         return (0);
 320 }
 321
 322 /* conf file stuff */
 323 #define SWM_CONF_WS     "\n= \t"
 324 #define SWM_CONF_FILE   "scrotwm.conf"
 325 int
 326 conf_load(char *filename)
 327 {
 328         FILE                    *config;
 329         char                    *line, *cp, *var, *val;
 330         size_t                  len, lineno = 0;
 331         int                     i, sc;
 332
 333         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 334
 335         if (filename == NULL)
 336                 return (1);
 337
 338         if ((config = fopen(filename, "r")) == NULL)
 339                 return (1);
 340
 341         for (sc = ScreenCount(display);;) {
 342                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 343                         if (feof(config))
 344                                 break;
 345                 cp = line;
 346                 cp += (long)strspn(cp, SWM_CONF_WS);
 347                 if (cp[0] == '\0') {
 348                         /* empty line */
 349                         free(line);
 350                         continue;
 351                 }
 352                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 353                         break;
 354                 cp += (long)strspn(cp, SWM_CONF_WS);
 355                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 356                         break;
 357
 358                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 359                 switch (var[0]) {
 360                 case 'b':
 361                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 362                                 bar_enabled = atoi(val);
 363                         else if (!varmatch(var, "bar_border", &i))
 364                                 if (i > 0 && i <= sc)
 365                                         screens[i - 1].bar_border =
 366                                             name_to_color(val);
 367                                 else if (i == -1)
 368                                         for (i = 0; i < sc; i++)
 369                                                 screens[i].bar_border =
 370                                                     name_to_color(val);
 371                                  else
 372                                         goto badidx;
 373                         else if (!varmatch(var, "bar_color", &i))
 374                                 if (i > 0 && i <= sc)
 375                                         screens[i - 1].bar_color =
 376                                             name_to_color(val);
 377                                 else if (i == -1)
 378                                         for (i = 0; i < sc; i++)
 379                                                 screens[i].bar_color =
 380                                                     name_to_color(val);
 381                                 else
 382                                         goto badidx;
 383                         else if (!varmatch(var, "bar_font_color", &i))
 384                                 if (i > 0 && i <= sc)
 385                                         screens[i - 1].bar_font_color =
 386                                                 name_to_color(val);
 387                                 else if (i == -1)
 388                                         for (i = 0; i < sc; i++)
 389                                                 screens[i].bar_font_color =
 390                                                     name_to_color(val);
 391                                 else
 392                                         goto badidx;
 393
 394                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 395                                 asprintf(&bar_fonts[0], "%s", val);
 396                         else
 397                                 goto bad;
 398                         break;
 399
 400                 case 'c':
 401                         if (!varmatch(var, "color_focus", &i))
 402                                 if (i > 0 && i <= sc)
 403                                         screens[i - 1].color_focus =
 404                                             name_to_color(val);
 405                                 else if (i == -1)
 406                                         for (i = 0; i < sc; i++)
 407                                                 screens[i].color_focus =
 408                                                     name_to_color(val);
 409                                 else
 410                                         goto badidx;
 411                         else if (!varmatch(var, "color_unfocus", &i))
 412                                 if (i > 0 && i <= sc)
 413                                         screens[i - 1].color_unfocus =
 414                                             name_to_color(val);
 415                                 else if (i == -1)
 416                                         for (i = 0; i < sc; i++)
 417                                                 screens[i].color_unfocus =
 418                                                     name_to_color(val);
 419                                 else
 420                                         goto badidx;
 421                         else
 422                                 goto bad;
 423                         break;
 424
 425                 case 'd':
 426                         if (!strncmp(var, "dialog_ratio",
 427                             strlen("dialog_ratio"))) {
 428                                 dialog_ratio = atof(val);
 429                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 430                                         dialog_ratio = .6;
 431                         } else
 432                                 goto bad;
 433                         break;
 434
 435                 case 's':
 436                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 437                                 asprintf(&spawn_term[0], "%s", val); /* XXX args? */
 438                         break;
 439                 default:
 440                         goto bad;
 441                 }
 442                 free(line);
 443         }
 444
 445         fclose(config);
 446         return (0);
 447 bad:
 448         errx(1, "invalid conf file entry: %s=%s", var, val);
 449 badidx:
 450         errx(1, "invalid screen index: %s out of bounds", var);
 451 }
 452
 453 void
 454 bar_print(struct swm_region *r, char *s)
 455 {
 456         XClearWindow(display, r->bar_window);
 457         XSetForeground(display, bar_gc, r->s->bar_font_color);
 458         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 459             strlen(s));
 460 }
 461
 462 void
 463 bar_update(void)
 464 {
 465         time_t                  tmt;
 466         struct tm               tm;
 467         struct swm_region       *r;
 468         int                     i, x;
 469         char                    s[SWM_BAR_MAX];
 470         char                    e[SWM_BAR_MAX];
 471
 472         if (bar_enabled == 0)
 473                 return;
 474
 475         time(&tmt);
 476         localtime_r(&tmt, &tm);
 477         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 478         for (i = 0; i < ScreenCount(display); i++) {
 479                 x = 1;
 480                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 481                         snprintf(e, sizeof e, "%s     %d:%d",
 482                             s, x++, r->ws->idx + 1);
 483                         bar_print(r, e);
 484                 }
 485         }
 486         XSync(display, False);
 487         alarm(60);
 488 }
 489
 490 void
 491 bar_signal(int sig)
 492 {
 493         bar_alarm = 1;
 494 }
 495
 496 void
 497 bar_toggle(struct swm_region *r, union arg *args)
 498 {
 499         struct swm_region       *tmpr;
 500         int                     i, j, sc = ScreenCount(display);
 501
 502         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 503
 504         if (bar_enabled) {
 505                 for (i = 0; i < sc; i++)
 506                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 507                                 XUnmapWindow(display, tmpr->bar_window);
 508         } else {
 509                 for (i = 0; i < sc; i++)
 510                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 511                                 XMapRaised(display, tmpr->bar_window);
 512         }
 513         bar_enabled = !bar_enabled;
 514         XSync(display, False);
 515         for (i = 0; i < sc; i++)
 516                 for (j = 0; j < SWM_WS_MAX; j++)
 517                         screens[i].ws[j].restack = 1;
 518
 519         stack();
 520         /* must be after stack */
 521         for (i = 0; i < sc; i++)
 522                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 523                         bar_update();
 524 }
 525
 526 void
 527 bar_setup(struct swm_region *r)
 528 {
 529         int                     i;
 530
 531         for (i = 0; bar_fonts[i] != NULL; i++) {
 532                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 533                 if (bar_fs)
 534                         break;
 535         }
 536         if (bar_fonts[i] == NULL)
 537                         errx(1, "couldn't load font");
 538         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 539
 540         r->bar_window = XCreateSimpleWindow(display,
 541             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 542             1, r->s->bar_border, r->s->bar_color);
 543         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 544         XSetFont(display, bar_gc, bar_fs->fid);
 545         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 546         if (bar_enabled)
 547                 XMapRaised(display, r->bar_window);
 548         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 549
 550         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 551                 err(1, "could not install bar_signal");
 552         bar_update();
 553 }
 554
 555 void
 556 bar_refresh(void)
 557 {
 558         XSetWindowAttributes    wa;
 559         struct swm_region       *r;
 560         int                     i;
 561
 562         bzero(&wa, sizeof wa);
 563         for (i = 0; i < ScreenCount(display); i++)
 564                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 565                         wa.border_pixel = screens[i].bar_border;
 566                         wa.background_pixel = screens[i].bar_color;
 567                         XChangeWindowAttributes(display, r->bar_window,
 568                             CWBackPixel | CWBorderPixel, &wa);
 569                 }
 570         bar_update();
 571 }
 572
 573 void
 574 config_win(struct ws_win *win)
 575 {
 576         XConfigureEvent         ce;
 577
 578         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 579             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 580         ce.type = ConfigureNotify;
 581         ce.display = display;
 582         ce.event = win->id;
 583         ce.window = win->id;
 584         ce.x = win->g.x;
 585         ce.y = win->g.y;
 586         ce.width = win->g.w;
 587         ce.height = win->g.h;
 588         ce.border_width = 1; /* XXX store this! */
 589         ce.above = None;
 590         ce.override_redirect = False;
 591         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 592 }
 593
 594 int
 595 count_win(struct workspace *ws, int count_transient)
 596 {
 597         struct ws_win           *win;
 598         int                     count = 0;
 599
 600         TAILQ_FOREACH(win, &ws->winlist, entry) {
 601                 if (count_transient == 0 && win->floating)
 602                         continue;
 603                 if (count_transient == 0 && win->transient)
 604                         continue;
 605                 count++;
 606         }
 607         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 608
 609         return (count);
 610 }
 611
 612 void
 613 quit(struct swm_region *r, union arg *args)
 614 {
 615         DNPRINTF(SWM_D_MISC, "quit\n");
 616         running = 0;
 617 }
 618
 619 void
 620 restart(struct swm_region *r, union arg *args)
 621 {
 622         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 623
 624         /* disable alarm because the following code may not be interrupted */
 625         alarm(0);
 626         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 627                 errx(1, "can't disable alarm");
 628
 629         XCloseDisplay(display);
 630         execvp(start_argv[0], start_argv);
 631         fprintf(stderr, "execvp failed\n");
 632         perror(" failed");
 633         quit(NULL, NULL);
 634 }
 635
 636 struct swm_region *
 637 root_to_region(Window root)
 638 {
 639         struct swm_region       *r;
 640         Window                  rr, cr;
 641         int                     i, x, y, wx, wy;
 642         unsigned int            mask;
 643
 644         for (i = 0; i < ScreenCount(display); i++)
 645                 if (screens[i].root == root)
 646                         break;
 647
 648         if (rootclick != root && /* if root was just clicked in, use cursor */
 649             cur_focus && cur_focus->ws->r && cur_focus->s == &screens[i])
 650                 r = cur_focus->ws->r;
 651         else {
 652                 if (XQueryPointer(display, screens[i].root,
 653                     &rr, &cr, &x, &y, &wx, &wy, &mask) == False) {
 654                         r = TAILQ_FIRST(&screens[i].rl);
 655                 } else {
 656                         TAILQ_FOREACH(r, &screens[i].rl, entry) {
 657                                 if (x > X(r) && x < X(r) + WIDTH(r) &&
 658                                     y > Y(r) && y < Y(r) + HEIGHT(r))
 659                                         break;
 660                         }
 661
 662                         if (r == NULL)
 663                                 r = TAILQ_FIRST(&screens[i].rl);
 664                 }
 665         }
 666         return (r);
 667 }
 668
 669 struct ws_win *
 670 find_window(Window id)
 671 {
 672         struct ws_win           *win;
 673         int                     i, j;
 674
 675         for (i = 0; i < ScreenCount(display); i++)
 676                 for (j = 0; j < SWM_WS_MAX; j++)
 677                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 678                                 if (id == win->id)
 679                                         return (win);
 680         return (NULL);
 681 }
 682
 683 void
 684 spawn(struct swm_region *r, union arg *args)
 685 {
 686         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 687         /*
 688          * The double-fork construct avoids zombie processes and keeps the code
 689          * clean from stupid signal handlers.
 690          */
 691         if (fork() == 0) {
 692                 if (fork() == 0) {
 693                         if (display)
 694                                 close(ConnectionNumber(display));
 695                         setsid();
 696                         execvp(args->argv[0], args->argv);
 697                         fprintf(stderr, "execvp failed\n");
 698                         perror(" failed");
 699                 }
 700                 exit(0);
 701         }
 702         wait(0);
 703 }
 704
 705 void
 706 unfocus_win(struct ws_win *win)
 707 {
 708         DNPRINTF(SWM_D_FOCUS, "unfocus_win: id: %lu\n", win->id);
 709         if (win->ws->r && win->focus)
 710                 XSetWindowBorder(display, win->id,
 711                     win->ws->r->s->color_unfocus);
 712         win->focus = 0;
 713         if (win->ws->focus == win)
 714                 win->ws->focus = NULL;
 715         if (cur_focus == win)
 716                 cur_focus = NULL;
 717 }
 718
 719
 720 void
 721 focus_win(struct ws_win *win)
 722 {
 723         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win->id);
 724
 725         rootclick = 0;
 726
 727         win->ws->focus = win;
 728         if (win->ws->r != NULL) {
 729                 if (cur_focus && cur_focus != win)
 730                         unfocus_win(cur_focus);
 731                 cur_focus = win;
 732                 if (!win->focus)
 733                         XSetWindowBorder(display, win->id,
 734                             win->ws->r->s->color_focus);
 735                 win->focus = 1;
 736                 XSetInputFocus(display, win->id,
 737                     RevertToPointerRoot, CurrentTime);
 738         }
 739 }
 740
 741 void
 742 switchws(struct swm_region *r, union arg *args)
 743 {
 744         int                     wsid = args->id;
 745         struct swm_region       *this_r, *other_r;
 746         struct ws_win           *win;
 747         struct workspace        *new_ws, *old_ws;
 748
 749         this_r = r;
 750         old_ws = this_r->ws;
 751         new_ws = &this_r->s->ws[wsid];
 752
 753         DNPRINTF(SWM_D_WS, "switchws screen %d region %dx%d+%d+%d: "
 754             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
 755             old_ws->idx, wsid);
 756
 757         if (new_ws == old_ws)
 758                 return;
 759
 760         other_r = new_ws->r;
 761         if (!other_r) {
 762                 /* if the other workspace is hidden, switch windows */
 763                 /* map new window first to prevent ugly blinking */
 764                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
 765                         XMapRaised(display, win->id);
 766
 767                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
 768                         XUnmapWindow(display, win->id);
 769
 770                 old_ws->r = NULL;
 771                 old_ws->restack = 1;
 772         } else {
 773                 other_r->ws = old_ws;
 774                 old_ws->r = other_r;
 775         }
 776         this_r->ws = new_ws;
 777         new_ws->r = this_r;
 778
 779         ignore_enter = 1;
 780         /* set focus */
 781         if (new_ws->focus)
 782                 focus_win(new_ws->focus);
 783         stack();
 784         bar_update();
 785 }
 786
 787 void
 788 swapwin(struct swm_region *r, union arg *args)
 789 {
 790         struct ws_win           *target;
 791         struct ws_win_list      *wl;
 792
 793
 794         DNPRINTF(SWM_D_WS, "swapwin id %d "
 795             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 796             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 797         if (cur_focus == NULL)
 798                 return;
 799
 800         wl = &cur_focus->ws->winlist;
 801
 802         switch (args->id) {
 803         case SWM_ARG_ID_SWAPPREV:
 804                 target = TAILQ_PREV(cur_focus, ws_win_list, entry);
 805                 TAILQ_REMOVE(wl, cur_focus, entry);
 806                 if (target == NULL)
 807                         TAILQ_INSERT_TAIL(wl, cur_focus, entry);
 808                 else
 809                         TAILQ_INSERT_BEFORE(target, cur_focus, entry);
 810                 break;
 811         case SWM_ARG_ID_SWAPNEXT:
 812                 target = TAILQ_NEXT(cur_focus, entry);
 813                 TAILQ_REMOVE(wl, cur_focus, entry);
 814                 if (target == NULL)
 815                         TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 816                 else
 817                         TAILQ_INSERT_AFTER(wl, target, cur_focus, entry);
 818                 break;
 819         case SWM_ARG_ID_SWAPMAIN:
 820                 target = TAILQ_FIRST(wl);
 821                 if (target == cur_focus)
 822                         return;
 823                 TAILQ_REMOVE(wl, target, entry);
 824                 TAILQ_INSERT_BEFORE(cur_focus, target, entry);
 825                 TAILQ_REMOVE(wl, cur_focus, entry);
 826                 TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 827                 break;
 828         default:
 829                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
 830                 return;
 831         }
 832
 833         ignore_enter = 2;
 834         stack();
 835 }
 836
 837 void
 838 focus(struct swm_region *r, union arg *args)
 839 {
 840         struct ws_win           *winfocus, *winlostfocus;
 841         struct ws_win_list      *wl;
 842
 843         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
 844         if (cur_focus == NULL)
 845                 return;
 846
 847         wl = &cur_focus->ws->winlist;
 848
 849         winlostfocus = cur_focus;
 850
 851         switch (args->id) {
 852         case SWM_ARG_ID_FOCUSPREV:
 853                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
 854                 if (winfocus == NULL)
 855                         winfocus = TAILQ_LAST(wl, ws_win_list);
 856                 break;
 857
 858         case SWM_ARG_ID_FOCUSNEXT:
 859                 winfocus = TAILQ_NEXT(cur_focus, entry);
 860                 if (winfocus == NULL)
 861                         winfocus = TAILQ_FIRST(wl);
 862                 break;
 863
 864         case SWM_ARG_ID_FOCUSMAIN:
 865                 winfocus = TAILQ_FIRST(wl);
 866                 break;
 867
 868         default:
 869                 return;
 870         }
 871
 872         if (winfocus == winlostfocus)
 873                 return;
 874
 875         focus_win(winfocus);
 876         XSync(display, False);
 877 }
 878
 879 void
 880 cycle_layout(struct swm_region *r, union arg *args)
 881 {
 882         struct workspace        *ws = r->ws;
 883
 884         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
 885
 886         ws->cur_layout++;
 887         if (ws->cur_layout->l_stack == NULL)
 888                 ws->cur_layout = &layouts[0];
 889         ignore_enter = 1;
 890
 891         stack();
 892 }
 893
 894 void
 895 stack_config(struct swm_region *r, union arg *args)
 896 {
 897         struct workspace        *ws = r->ws;
 898
 899         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
 900             args->id, ws->idx);
 901
 902         if (ws->cur_layout->l_config != NULL)
 903                 ws->cur_layout->l_config(ws, args->id);
 904
 905         if (args->id != SWM_ARG_ID_STACKINIT);
 906                 stack();
 907 }
 908
 909 void
 910 stack(void) {
 911         struct swm_geometry     g;
 912         struct swm_region       *r;
 913         int                     i, j;
 914
 915         DNPRINTF(SWM_D_STACK, "stack\n");
 916
 917         for (i = 0; i < ScreenCount(display); i++) {
 918                 j = 0;
 919                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 920                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
 921                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
 922
 923                         /* start with screen geometry, adjust for bar */
 924                         g = r->g;
 925                         g.w -= 2;
 926                         g.h -= 2;
 927                         if (bar_enabled) {
 928                                 g.y += bar_height;
 929                                 g.h -= bar_height;
 930                         }
 931
 932                         r->ws->restack = 0;
 933                         r->ws->cur_layout->l_stack(r->ws, &g);
 934                 }
 935         }
 936         XSync(display, False);
 937 }
 938
 939 void
 940 stack_floater(struct ws_win *win, struct swm_region *r)
 941 {
 942         unsigned int            mask;
 943         XWindowChanges          wc;
 944
 945         bzero(&wc, sizeof wc);
 946         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
 947         wc.border_width = 1;
 948         if (win->transient) {
 949                 win->g.w = (double)WIDTH(r) * dialog_ratio;
 950                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
 951         }
 952         wc.width = win->g.w;
 953         wc.height = win->g.h;
 954         wc.x = (WIDTH(r) - win->g.w) / 2;
 955         wc.y = (HEIGHT(r) - win->g.h) / 2;
 956
 957         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
 958             win->id, wc.x, wc.y, wc.width, wc.height);
 959
 960         XConfigureWindow(display, win->id, mask, &wc);
 961 }
 962
 963
 964 void
 965 vertical_config(struct workspace *ws, int id)
 966 {
 967         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
 968
 969         switch (id) {
 970         case SWM_ARG_ID_STACKRESET:
 971         case SWM_ARG_ID_STACKINIT:
 972                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
 973                 ws->l_state.vertical_mwin = 1;
 974                 break;
 975         case SWM_ARG_ID_MASTERSHRINK:
 976                 if (ws->l_state.vertical_msize > 1)
 977                         ws->l_state.vertical_msize--;
 978                 break;
 979         case SWM_ARG_ID_MASTERGROW:
 980                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
 981                         ws->l_state.vertical_msize++;
 982                 break;
 983         case SWM_ARG_ID_MASTERADD:
 984                 ws->l_state.vertical_mwin++;
 985                 break;
 986         case SWM_ARG_ID_MASTERDEL:
 987                 if (ws->l_state.vertical_mwin > 0)
 988                         ws->l_state.vertical_mwin--;
 989                 break;
 990         default:
 991                 return;
 992         }
 993 }
 994
 995 void
 996 vertical_stack(struct workspace *ws, struct swm_geometry *g) {
 997         XWindowChanges          wc;
 998         struct swm_geometry     gg = *g;
 999         struct ws_win           *win, *winfocus;
1000         int                     i, j, split, colno, hrh, winno, main_width;
1001         unsigned int            mask;
1002
1003         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1004
1005         if ((winno = count_win(ws, 0)) == 0)
1006                 return;
1007
1008         if (ws->focus == NULL)
1009                 ws->focus = TAILQ_FIRST(&ws->winlist);
1010         winfocus = cur_focus ? cur_focus : ws->focus;
1011
1012         if (ws->l_state.vertical_mwin &&
1013             winno > ws->l_state.vertical_mwin) {
1014                 split = ws->l_state.vertical_mwin;
1015                 colno = split;
1016                 main_width = (g->w / SWM_V_SLICE) *
1017                    ws->l_state.vertical_msize;
1018                 gg.w = main_width;
1019         } else {
1020                 colno = winno;
1021                 split = 0;
1022         }
1023         hrh = g->h / colno;
1024         gg.h = hrh - 2;
1025
1026         i = j = 0;
1027         TAILQ_FOREACH(win, &ws->winlist, entry) {
1028                 if (split && i == split) {
1029                         colno = winno - split;
1030                         hrh = (g->h / colno);
1031                         gg.x += main_width + 2;
1032                         gg.w = g->w - (main_width + 2);
1033                         gg.h = hrh - 2;
1034                         j = 0;
1035                 }
1036                 if (j == colno - 1)
1037                         gg.h = (hrh + (g->h - (colno * hrh)));
1038
1039                 if (j == 0)
1040                         gg.y = g->y;
1041                 else
1042                         gg.y += hrh;
1043
1044
1045                 if (win->transient != 0 || win->floating != 0)
1046                         stack_floater(win, ws->r);
1047                 else {
1048                         bzero(&wc, sizeof wc);
1049                         wc.border_width = 1;
1050                         win->g.x = wc.x = gg.x;
1051                         win->g.y = wc.y = gg.y;
1052                         win->g.w = wc.width = gg.w;
1053                         win->g.h = wc.height = gg.h;
1054                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1055                         XConfigureWindow(display, win->id, mask, &wc);
1056                 }
1057
1058                 XMapRaised(display, win->id);
1059                 i++;
1060                 j++;
1061         }
1062
1063         if (winfocus)
1064                 focus_win(winfocus); /* has to be done outside of the loop */
1065 }
1066
1067
1068 void
1069 horizontal_config(struct workspace *ws, int id)
1070 {
1071         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1072
1073         switch (id) {
1074         case SWM_ARG_ID_STACKRESET:
1075         case SWM_ARG_ID_STACKINIT:
1076                 ws->l_state.horizontal_mwin = 1;
1077                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1078                 break;
1079         case SWM_ARG_ID_MASTERSHRINK:
1080                 if (ws->l_state.horizontal_msize > 1)
1081                         ws->l_state.horizontal_msize--;
1082                 break;
1083         case SWM_ARG_ID_MASTERGROW:
1084                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1085                         ws->l_state.horizontal_msize++;
1086                 break;
1087         case SWM_ARG_ID_MASTERADD:
1088                 ws->l_state.horizontal_mwin++;
1089                 break;
1090         case SWM_ARG_ID_MASTERDEL:
1091                 if (ws->l_state.horizontal_mwin > 0)
1092                         ws->l_state.horizontal_mwin--;
1093                 break;
1094         default:
1095                 return;
1096         }
1097 }
1098
1099 void
1100 horizontal_stack(struct workspace *ws, struct swm_geometry *g) {
1101         XWindowChanges          wc;
1102         struct swm_geometry     gg = *g;
1103         struct ws_win           *win, *winfocus;
1104         int                     i, j, split, rowno, hrw, winno, main_height;
1105         unsigned int            mask;
1106
1107         DNPRINTF(SWM_D_STACK, "horizontal_stack: workspace: %d\n", ws->idx);
1108
1109         if ((winno = count_win(ws, 0)) == 0)
1110                 return;
1111
1112         if (ws->focus == NULL)
1113                 ws->focus = TAILQ_FIRST(&ws->winlist);
1114         winfocus = cur_focus ? cur_focus : ws->focus;
1115
1116         if (ws->l_state.horizontal_mwin &&
1117             winno > ws->l_state.horizontal_mwin) {
1118                 split = ws->l_state.horizontal_mwin;
1119                 rowno = split;
1120                 main_height = (g->h / SWM_V_SLICE) *
1121                    ws->l_state.horizontal_msize;
1122                 gg.h = main_height;
1123         } else {
1124                 rowno = winno;
1125                 split = 0;
1126         }
1127         hrw = g->w / rowno;
1128         gg.w = hrw - 2;
1129
1130         i = j = 0;
1131         TAILQ_FOREACH(win, &ws->winlist, entry) {
1132                 if (split && i == split) {
1133                         rowno = winno - split;
1134                         hrw = (g->w / rowno);
1135                         gg.y += main_height + 2;
1136                         gg.h = g->h - (main_height + 2);
1137                         gg.w = hrw - 2;
1138                         j = 0;
1139                 }
1140                 if (j == rowno - 1)
1141                         gg.w = (hrw + (g->w - (rowno * hrw)));
1142
1143                 if (j == 0)
1144                         gg.x = g->x;
1145                 else
1146                         gg.x += hrw;
1147
1148                 if (win->transient != 0 || win->floating != 0)
1149                         stack_floater(win, ws->r);
1150                 else {
1151                         bzero(&wc, sizeof wc);
1152                         wc.border_width = 1;
1153                         win->g.x = wc.x = gg.x;
1154                         win->g.y = wc.y = gg.y;
1155                         win->g.w = wc.width = gg.w;
1156                         win->g.h = wc.height = gg.h;
1157                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1158                         XConfigureWindow(display, win->id, mask, &wc);
1159                 }
1160
1161                 XMapRaised(display, win->id);
1162                 j++;
1163                 i++;
1164         }
1165
1166         if (winfocus)
1167                 focus_win(winfocus); /* this has to be done outside of the loop */
1168 }
1169
1170 /* fullscreen view */
1171 void
1172 max_stack(struct workspace *ws, struct swm_geometry *g) {
1173         XWindowChanges          wc;
1174         struct swm_geometry     gg = *g;
1175         struct ws_win           *win, *winfocus;
1176         unsigned int            mask;
1177
1178         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1179
1180         if (count_win(ws, 0) == 0)
1181                 return;
1182
1183         if (ws->focus == NULL)
1184                 ws->focus = TAILQ_FIRST(&ws->winlist);
1185         winfocus = cur_focus ? cur_focus : ws->focus;
1186
1187         TAILQ_FOREACH(win, &ws->winlist, entry) {
1188                 if (win->transient != 0 || win->floating != 0) {
1189                         if (win == ws->focus) {
1190                                 /* XXX maximize? */
1191                                 stack_floater(win, ws->r);
1192                                 XMapRaised(display, win->id);
1193                         } else
1194                                 XUnmapWindow(display, win->id);
1195                 } else {
1196                         bzero(&wc, sizeof wc);
1197                         wc.border_width = 1;
1198                         win->g.x = wc.x = gg.x;
1199                         win->g.y = wc.y = gg.y;
1200                         win->g.w = wc.width = gg.w;
1201                         win->g.h = wc.height = gg.h;
1202                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1203                         XConfigureWindow(display, win->id, mask, &wc);
1204
1205                         if (win == ws->focus) {
1206                                 XMapRaised(display, win->id);
1207                         } else
1208                                 XUnmapWindow(display, win->id);
1209                 }
1210         }
1211
1212         if (winfocus)
1213                 focus_win(winfocus); /* has to be done outside of the loop */
1214 }
1215
1216 void
1217 send_to_ws(struct swm_region *r, union arg *args)
1218 {
1219         int                     wsid = args->id;
1220         struct ws_win           *win = cur_focus;
1221         struct workspace        *ws, *nws;
1222
1223         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1224
1225         ws = win->ws;
1226         nws = &win->s->ws[wsid];
1227
1228         XUnmapWindow(display, win->id);
1229
1230         /* find a window to focus */
1231         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1232         if (ws->focus == NULL)
1233                 ws->focus = TAILQ_FIRST(&ws->winlist);
1234         if (ws->focus == win)
1235                 ws->focus = NULL;
1236
1237         TAILQ_REMOVE(&ws->winlist, win, entry);
1238
1239         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1240         win->ws = nws;
1241
1242         if (count_win(nws, 1) == 1)
1243                 nws->focus = win;
1244         ws->restack = 1;
1245         nws->restack = 1;
1246
1247         stack();
1248 }
1249
1250 /* key definitions */
1251 struct key {
1252         unsigned int            mod;
1253         KeySym                  keysym;
1254         void                    (*func)(struct swm_region *r, union arg *);
1255         union arg               args;
1256 } keys[] = {
1257         /* modifier             key     function                argument */
1258         { MODKEY,               XK_space,       cycle_layout,   {0} },
1259         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1260         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1261         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1262         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1263         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1264         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1265         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1266         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1267         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1268         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1269         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1270         { MODKEY,               XK_p,           spawn,          {.argv = spawn_menu} },
1271         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1272         { MODKEY,               XK_q,           restart,        {0} },
1273         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1274         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1275         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1276         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1277         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1278         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1279         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1280         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1281         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1282         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1283         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1284         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1285         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1286         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1287         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1288         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1289         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1290         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1291         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1292         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1293         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1294         { MODKEY,               XK_b,           bar_toggle,     {0} },
1295         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1296         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1297 };
1298
1299 void
1300 updatenumlockmask(void)
1301 {
1302         unsigned int            i, j;
1303         XModifierKeymap         *modmap;
1304
1305         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1306         numlockmask = 0;
1307         modmap = XGetModifierMapping(display);
1308         for (i = 0; i < 8; i++)
1309                 for (j = 0; j < modmap->max_keypermod; j++)
1310                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1311                           == XKeysymToKeycode(display, XK_Num_Lock))
1312                                 numlockmask = (1 << i);
1313
1314         XFreeModifiermap(modmap);
1315 }
1316
1317 void
1318 grabkeys(void)
1319 {
1320         unsigned int            i, j, k;
1321         KeyCode                 code;
1322         unsigned int            modifiers[] =
1323             { 0, LockMask, numlockmask, numlockmask | LockMask };
1324
1325         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1326         updatenumlockmask();
1327
1328         for (k = 0; k < ScreenCount(display); k++) {
1329                 if (TAILQ_EMPTY(&screens[k].rl))
1330                         continue;
1331                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1332                 for (i = 0; i < LENGTH(keys); i++) {
1333                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1334                                 for (j = 0; j < LENGTH(modifiers); j++)
1335                                         XGrabKey(display, code,
1336                                             keys[i].mod | modifiers[j],
1337                                             screens[k].root, True,
1338                                             GrabModeAsync, GrabModeAsync);
1339                 }
1340         }
1341 }
1342 void
1343 expose(XEvent *e)
1344 {
1345         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1346 }
1347
1348 void
1349 keypress(XEvent *e)
1350 {
1351         unsigned int            i;
1352         KeySym                  keysym;
1353         XKeyEvent               *ev = &e->xkey;
1354
1355         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1356
1357         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1358         for (i = 0; i < LENGTH(keys); i++)
1359                 if (keysym == keys[i].keysym
1360                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1361                    && keys[i].func)
1362                         keys[i].func(root_to_region(ev->root),
1363                             &(keys[i].args));
1364 }
1365
1366 void
1367 buttonpress(XEvent *e)
1368 {
1369         XButtonPressedEvent     *ev = &e->xbutton;
1370 #ifdef SWM_CLICKTOFOCUS
1371         struct ws_win           *win;
1372         struct workspace        *ws;
1373         struct swm_region       *r;
1374 #endif
1375
1376         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
1377
1378         if (ev->window == ev->root) {
1379                 rootclick = ev->root;
1380                 return;
1381         }
1382         if (ev->window == cur_focus->id)
1383                 return;
1384 #ifdef SWM_CLICKTOFOCUS
1385         r = root_to_region(ev->root);
1386         ws = r->ws;
1387         TAILQ_FOREACH(win, &ws->winlist, entry)
1388                 if (win->id == ev->window) {
1389                         /* focus in the clicked window */
1390                         XSetWindowBorder(display, ev->window, 0xff0000);
1391                         XSetWindowBorder(display, ws->focus->id, 0x888888);
1392                         XSetInputFocus(display, ev->window, RevertToPointerRoot,
1393                             CurrentTime);
1394                         ws->focus = win;
1395                         XSync(display, False);
1396                         break;
1397         }
1398 #endif
1399 }
1400
1401 void
1402 set_win_state(struct ws_win *win, long state)
1403 {
1404         long                    data[] = {state, None};
1405
1406         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
1407
1408         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
1409             (unsigned char *)data, 2);
1410 }
1411
1412 struct ws_win *
1413 manage_window(Window id, struct workspace *ws)
1414 {
1415         Window                  trans;
1416         struct ws_win           *win;
1417         XClassHint              ch;
1418
1419         TAILQ_FOREACH(win, &ws->winlist, entry) {
1420                 if (win->id == id)
1421                         return (win);   /* already being managed */
1422         }
1423
1424         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1425                 errx(1, "calloc: failed to allocate memory for new window");
1426
1427         win->id = id;
1428         win->ws = ws;
1429         win->s = ws->r->s;      /* this never changes */
1430         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
1431
1432         /* make new win focused */
1433         focus_win(win);
1434
1435         XGetTransientForHint(display, win->id, &trans);
1436         if (trans) {
1437                 win->transient = trans;
1438                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
1439                     (unsigned)win->id, win->transient);
1440         }
1441         XGetWindowAttributes(display, id, &win->wa);
1442         win->g.w = win->wa.width;
1443         win->g.h = win->wa.height;
1444         win->g.x = win->wa.x;
1445         win->g.y = win->wa.y;
1446
1447         /* XXX make this a table */
1448         bzero(&ch, sizeof ch);
1449         if (XGetClassHint(display, win->id, &ch)) {
1450                 /*fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name); */
1451                 if (!strcmp(ch.res_class, "MPlayer") && !strcmp(ch.res_name, "xv")) {
1452                         win->floating = 1;
1453                 }
1454                 if (ch.res_class)
1455                         XFree(ch.res_class);
1456                 if (ch.res_name)
1457                         XFree(ch.res_name);
1458         }
1459
1460         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
1461             PropertyChangeMask | StructureNotifyMask);
1462
1463         set_win_state(win, NormalState);
1464
1465         return (win);
1466 }
1467
1468 void
1469 configurerequest(XEvent *e)
1470 {
1471         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1472         struct ws_win           *win;
1473         int                     new = 1;
1474         XWindowChanges          wc;
1475
1476         if ((win = find_window(ev->window)) == NULL)
1477                 new = 1;
1478
1479         if (new) {
1480                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
1481                     ev->window);
1482                 bzero(&wc, sizeof wc);
1483                 wc.x = ev->x;
1484                 wc.y = ev->y;
1485                 wc.width = ev->width;
1486                 wc.height = ev->height;
1487                 wc.border_width = ev->border_width;
1488                 wc.sibling = ev->above;
1489                 wc.stack_mode = ev->detail;
1490                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
1491         } else {
1492                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
1493                     ev->window);
1494                 if (win->floating) {
1495                         if (ev->value_mask & CWX)
1496                                 win->g.x = ev->x;
1497                         if (ev->value_mask & CWY)
1498                                 win->g.y = ev->y;
1499                         if (ev->value_mask & CWWidth)
1500                                 win->g.w = ev->width;
1501                         if (ev->value_mask & CWHeight)
1502                                 win->g.h = ev->height;
1503                         if (win->ws->r != NULL) {
1504                                 /* this seems to be full screen */
1505                                 if (win->g.w > WIDTH(win->ws->r)) {
1506                                         /* kill border */
1507                                         win->g.x -= 1;
1508                                         win->g.w += 1;
1509                                 }
1510                                 if (win->g.h > HEIGHT(win->ws->r)) {
1511                                         /* kill border */
1512                                         win->g.y -= 1;
1513                                         win->g.h += 1;
1514                                 }
1515                         }
1516                         if ((ev->value_mask & (CWX|CWY)) &&
1517                             !(ev->value_mask & (CWWidth|CWHeight)))
1518                                 config_win(win);
1519                         XMoveResizeWindow(display, win->id,
1520                             win->g.x, win->g.y, win->g.w, win->g.h);
1521                 } else
1522                         config_win(win);
1523         }
1524 }
1525
1526 void
1527 configurenotify(XEvent *e)
1528 {
1529         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1530             e->xconfigure.window);
1531 }
1532
1533 void
1534 destroynotify(XEvent *e)
1535 {
1536         struct ws_win           *win;
1537         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1538
1539         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1540
1541         if ((win = find_window(ev->window)) != NULL) {
1542                 struct workspace *ws = win->ws;
1543                 /* find a window to focus */
1544                 if (ws->focus == win)
1545                         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1546                 if (ws->focus == NULL)
1547                         ws->focus = TAILQ_FIRST(&ws->winlist);
1548                 if (ws->focus == win)
1549                         ws->focus = NULL;
1550                 if (cur_focus == win) {
1551                         if (ws->focus == NULL)
1552                                 unfocus_win(win); /* XXX focus another ws? */
1553                         else
1554                                 focus_win(ws->focus);
1555                 }
1556
1557                 TAILQ_REMOVE(&ws->winlist, win, entry);
1558                 set_win_state(win, WithdrawnState);
1559                 free(win);
1560         }
1561         stack();
1562 }
1563
1564 void
1565 enternotify(XEvent *e)
1566 {
1567         XCrossingEvent          *ev = &e->xcrossing;
1568         struct ws_win           *win;
1569         int                     i, j;
1570
1571         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1572
1573         if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) &&
1574             ev->window != ev->root)
1575                 return;
1576         if (ignore_enter) {
1577                 /* eat event(r) to prevent autofocus */
1578                 ignore_enter--;
1579                 return;
1580         }
1581         /* brute force for now */
1582         for (i = 0; i < ScreenCount(display); i++) {
1583                 for (j = 0; j < SWM_WS_MAX; j++) {
1584                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist , entry) {
1585                                 if (win->id == ev->window)
1586                                         focus_win(win);
1587                         }
1588                 }
1589         }
1590 }
1591
1592 void
1593 focusin(XEvent *e)
1594 {
1595         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
1596
1597         /* XXX this probably needs better handling now.
1598         if (ev->window == ev->root)
1599                 return;
1600         */
1601         /*
1602          * kill grab for now so that we can cut and paste , this screws up
1603          * click to focus
1604          */
1605         /*
1606         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu grabbing\n", ev->window);
1607         XGrabButton(display, Button1, AnyModifier, ev->window, False,
1608             ButtonPress, GrabModeAsync, GrabModeSync, None, None);
1609         */
1610 }
1611
1612 void
1613 mappingnotify(XEvent *e)
1614 {
1615         XMappingEvent           *ev = &e->xmapping;
1616
1617         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1618
1619         XRefreshKeyboardMapping(ev);
1620         if (ev->request == MappingKeyboard)
1621                 grabkeys();
1622 }
1623
1624 void
1625 maprequest(XEvent *e)
1626 {
1627         XMapRequestEvent        *ev = &e->xmaprequest;
1628         XWindowAttributes       wa;
1629         struct swm_region       *r;
1630
1631         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1632             e->xmaprequest.window);
1633
1634         if (!XGetWindowAttributes(display, ev->window, &wa))
1635                 return;
1636         if (wa.override_redirect)
1637                 return;
1638         r = root_to_region(wa.root);
1639         manage_window(e->xmaprequest.window, r->ws);
1640         stack();
1641 }
1642
1643 void
1644 propertynotify(XEvent *e)
1645 {
1646         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
1647             e->xproperty.window);
1648 }
1649
1650 void
1651 unmapnotify(XEvent *e)
1652 {
1653         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
1654 }
1655
1656 void
1657 visibilitynotify(XEvent *e)
1658 {
1659         int                     i;
1660         struct swm_region       *r;
1661
1662         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
1663             e->xvisibility.window);
1664         if (e->xvisibility.state == VisibilityUnobscured)
1665                 for (i = 0; i < ScreenCount(display); i++)
1666                         TAILQ_FOREACH(r, &screens[i].rl, entry)
1667                                 if (e->xvisibility.window == r->bar_window)
1668                                         bar_update();
1669 }
1670
1671 void                    (*handler[LASTEvent])(XEvent *) = {
1672                                 [Expose] = expose,
1673                                 [KeyPress] = keypress,
1674                                 [ButtonPress] = buttonpress,
1675                                 [ConfigureRequest] = configurerequest,
1676                                 [ConfigureNotify] = configurenotify,
1677                                 [DestroyNotify] = destroynotify,
1678                                 [EnterNotify] = enternotify,
1679                                 [FocusIn] = focusin,
1680                                 [MappingNotify] = mappingnotify,
1681                                 [MapRequest] = maprequest,
1682                                 [PropertyNotify] = propertynotify,
1683                                 [UnmapNotify] = unmapnotify,
1684                                 [VisibilityNotify] = visibilitynotify,
1685 };
1686
1687 int
1688 xerror_start(Display *d, XErrorEvent *ee)
1689 {
1690         other_wm = 1;
1691         return (-1);
1692 }
1693
1694 int
1695 xerror(Display *d, XErrorEvent *ee)
1696 {
1697         /* fprintf(stderr, "error: %p %p\n", display, ee); */
1698         return (-1);
1699 }
1700
1701 int
1702 active_wm(void)
1703 {
1704         other_wm = 0;
1705         xerrorxlib = XSetErrorHandler(xerror_start);
1706
1707         /* this causes an error if some other window manager is running */
1708         XSelectInput(display, DefaultRootWindow(display),
1709             SubstructureRedirectMask);
1710         XSync(display, False);
1711         if (other_wm)
1712                 return (1);
1713
1714         XSetErrorHandler(xerror);
1715         XSync(display, False);
1716         return (0);
1717 }
1718
1719 long
1720 getstate(Window w)
1721 {
1722         int                     format, status;
1723         long                    result = -1;
1724         unsigned char           *p = NULL;
1725         unsigned long           n, extra;
1726         Atom                    real;
1727
1728         astate = XInternAtom(display, "WM_STATE", False);
1729         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
1730             &real, &format, &n, &extra, (unsigned char **)&p);
1731         if (status != Success)
1732                 return (-1);
1733         if (n != 0)
1734                 result = *p;
1735         XFree(p);
1736         return (result);
1737 }
1738
1739 void
1740 new_region(struct swm_screen *s, struct workspace *ws,
1741     int x, int y, int w, int h)
1742 {
1743         struct swm_region       *r;
1744
1745         DNPRINTF(SWM_D_MISC, "new region on screen %d: %dx%d (%d, %d)\n",
1746              s->idx, x, y, w, h);
1747
1748         if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
1749                 errx(1, "calloc: failed to allocate memory for screen");
1750
1751         X(r) = x;
1752         Y(r) = y;
1753         WIDTH(r) = w;
1754         HEIGHT(r) = h;
1755         r->s = s;
1756         r->ws = ws;
1757         ws->r = r;
1758         TAILQ_INSERT_TAIL(&s->rl, r, entry);
1759         bar_setup(r);
1760 }
1761
1762 void
1763 setup_screens(void)
1764 {
1765 #ifdef SWM_XRR_HAS_CRTC
1766         XRRCrtcInfo             *ci;
1767         XRRScreenResources      *sr;
1768         int                     c;
1769 #endif /* SWM_XRR_HAS_CRTC */
1770         Window                  d1, d2, *wins = NULL;
1771         XWindowAttributes       wa;
1772         struct swm_region       *r;
1773         unsigned int            no;
1774         int                     errorbase, major, minor;
1775         int                     ncrtc = 0, w = 0;
1776         int                     i, j, k;
1777         struct workspace        *ws;
1778
1779         if ((screens = calloc(ScreenCount(display),
1780              sizeof(struct swm_screen))) == NULL)
1781                 errx(1, "calloc: screens");
1782
1783         /* map physical screens */
1784         for (i = 0; i < ScreenCount(display); i++) {
1785                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
1786                 screens[i].idx = i;
1787                 TAILQ_INIT(&screens[i].rl);
1788                 screens[i].root = RootWindow(display, i);
1789                 XGetWindowAttributes(display, screens[i].root, &wa);
1790                 XSelectInput(display, screens[i].root,
1791                     ButtonPressMask | wa.your_event_mask);
1792
1793                 /* set default colors */
1794                 screens[i].color_focus = name_to_color("red");
1795                 screens[i].color_unfocus = name_to_color("rgb:88/88/88");
1796                 screens[i].bar_border = name_to_color("rgb:00/80/80");
1797                 screens[i].bar_color = name_to_color("black");
1798                 screens[i].bar_font_color = name_to_color("rgb:a0/a0/a0");
1799
1800                 /* init all workspaces */
1801                 for (j = 0; j < SWM_WS_MAX; j++) {
1802                         ws = &screens[i].ws[j];
1803                         ws->idx = j;
1804                         ws->restack = 1;
1805                         ws->focus = NULL;
1806                         ws->r = NULL;
1807                         TAILQ_INIT(&ws->winlist);
1808
1809                         for (k = 0; layouts[k].l_stack != NULL; k++)
1810                                 if (layouts[k].l_config != NULL)
1811                                         layouts[k].l_config(ws,
1812                                             SWM_ARG_ID_STACKINIT);
1813                         ws->cur_layout = &layouts[0];
1814                 }
1815
1816                 /* map virtual screens onto physical screens */
1817                 screens[i].xrandr_support = XRRQueryExtension(display,
1818                     &xrandr_eventbase, &errorbase);
1819                 if (screens[i].xrandr_support)
1820                         if (XRRQueryVersion(display, &major, &minor) &&
1821                             major < 1)
1822                                 screens[i].xrandr_support = 0;
1823
1824 #if 0   /* not ready for dynamic screen changes */
1825                 if (screens[i].xrandr_support)
1826                         XRRSelectInput(display,
1827                             screens[r->s].root,
1828                             RRScreenChangeNotifyMask);
1829 #endif
1830
1831                 /* grab existing windows (before we build the bars)*/
1832                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
1833                         continue;
1834
1835 #ifdef SWM_XRR_HAS_CRTC
1836                 sr = XRRGetScreenResources(display, screens[i].root);
1837                 if (sr == NULL)
1838                         new_region(&screens[i], &screens[i].ws[w],
1839                             0, 0, DisplayWidth(display, i),
1840                             DisplayHeight(display, i));
1841                 else
1842                         ncrtc = sr->ncrtc;
1843
1844                 for (c = 0; c < ncrtc; c++) {
1845                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
1846                         if (ci->noutput == 0)
1847                                 continue;
1848
1849                         if (ci != NULL && ci->mode == None)
1850                                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
1851                                     DisplayWidth(display, i),
1852                                     DisplayHeight(display, i));
1853                         else
1854                                 new_region(&screens[i], &screens[i].ws[w],
1855                                     ci->x, ci->y, ci->width, ci->height);
1856                         w++;
1857                 }
1858                 XRRFreeCrtcInfo(ci);
1859                 XRRFreeScreenResources(sr);
1860 #else
1861                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
1862                     DisplayWidth(display, i),
1863                     DisplayHeight(display, i));
1864 #endif /* SWM_XRR_HAS_CRTC */
1865
1866                 /* attach windows to a region */
1867                 /* normal windows */
1868                 if ((r = TAILQ_FIRST(&screens[i].rl)) == NULL)
1869                         errx(1, "no regions on screen %d", i);
1870
1871                 for (i = 0; i < no; i++) {
1872                         XGetWindowAttributes(display, wins[i], &wa);
1873                         if (!XGetWindowAttributes(display, wins[i], &wa) ||
1874                             wa.override_redirect ||
1875                             XGetTransientForHint(display, wins[i], &d1))
1876                                 continue;
1877
1878                         if (wa.map_state == IsViewable ||
1879                             getstate(wins[i]) == NormalState)
1880                                 manage_window(wins[i], r->ws);
1881                 }
1882                 /* transient windows */
1883                 for (i = 0; i < no; i++) {
1884                         if (!XGetWindowAttributes(display, wins[i], &wa))
1885                                 continue;
1886
1887                         if (XGetTransientForHint(display, wins[i], &d1) &&
1888                             (wa.map_state == IsViewable || getstate(wins[i]) ==
1889                             NormalState))
1890                                 manage_window(wins[i], r->ws);
1891                 }
1892                 if (wins) {
1893                         XFree(wins);
1894                         wins = NULL;
1895                 }
1896         }
1897 }
1898
1899 int
1900 main(int argc, char *argv[])
1901 {
1902         struct passwd           *pwd;
1903         char                    conf[PATH_MAX], *cfile = NULL;
1904         struct stat             sb;
1905         XEvent                  e;
1906         int                     xfd;
1907         fd_set                  rd;
1908
1909         start_argv = argv;
1910         fprintf(stderr, "Welcome to scrotwm V%s\n", SWM_VERSION);
1911         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
1912                 warnx("no locale support");
1913
1914         if (!(display = XOpenDisplay(0)))
1915                 errx(1, "can not open display");
1916
1917         if (active_wm())
1918                 errx(1, "other wm running");
1919
1920         astate = XInternAtom(display, "WM_STATE", False);
1921
1922         /* look for local and global conf file */
1923         pwd = getpwuid(getuid());
1924         if (pwd == NULL)
1925                 errx(1, "invalid user %d", getuid());
1926
1927         setup_screens();
1928
1929         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
1930         if (stat(conf, &sb) != -1) {
1931                 if (S_ISREG(sb.st_mode))
1932                         cfile = conf;
1933         } else {
1934                 /* try global conf file */
1935                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
1936                 if (!stat(conf, &sb))
1937                         if (S_ISREG(sb.st_mode))
1938                                 cfile = conf;
1939         }
1940         if (cfile)
1941                 conf_load(cfile);
1942         bar_refresh();
1943
1944         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
1945
1946         grabkeys();
1947         stack();
1948
1949         xfd = ConnectionNumber(display);
1950         while (running) {
1951                 FD_SET(xfd, &rd);
1952                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
1953                         if (errno != EINTR)
1954                                 errx(1, "select failed");
1955                 if (bar_alarm) {
1956                         bar_alarm = 0;
1957                         bar_update();
1958                 }
1959                 while(XPending(display)) {
1960                         XNextEvent(display, &e);
1961                         if (handler[e.type])
1962                                 handler[e.type](&e);
1963                 }
1964         }
1965
1966         XCloseDisplay(display);
1967
1968         return (0);
1969 }