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 <fcntl.h>
  58 #include <locale.h>
  59 #include <unistd.h>
  60 #include <time.h>
  61 #include <signal.h>
  62 #include <string.h>
  63 #include <util.h>
  64 #include <pwd.h>
  65 #include <ctype.h>
  66
  67 #include <sys/types.h>
  68 #include <sys/time.h>
  69 #include <sys/stat.h>
  70 #include <sys/wait.h>
  71 #include <sys/queue.h>
  72 #include <sys/param.h>
  73 #include <sys/select.h>
  74
  75 #include <X11/cursorfont.h>
  76 #include <X11/keysym.h>
  77 #include <X11/Xatom.h>
  78 #include <X11/Xlib.h>
  79 #include <X11/Xproto.h>
  80 #include <X11/Xutil.h>
  81 #include <X11/extensions/Xrandr.h>
  82
  83 #if RANDR_MAJOR < 1
  84 #  error XRandR versions less than 1.0 are not supported
  85 #endif
  86
  87 #if RANDR_MAJOR >= 1
  88 #if RANDR_MINOR >= 2
  89 #define SWM_XRR_HAS_CRTC
  90 #endif
  91 #endif
  92
  93 /* #define SWM_DEBUG */
  94 #ifdef SWM_DEBUG
  95 #define DPRINTF(x...)           do { if (swm_debug) fprintf(stderr, x); } while(0)
  96 #define DNPRINTF(n,x...)        do { if (swm_debug & n) fprintf(stderr, x); } while(0)
  97 #define SWM_D_MISC              0x0001
  98 #define SWM_D_EVENT             0x0002
  99 #define SWM_D_WS                0x0004
 100 #define SWM_D_FOCUS             0x0008
 101 #define SWM_D_MOVE              0x0010
 102 #define SWM_D_STACK             0x0020
 103 #define SWM_D_MOUSE             0x0040
 104
 105 u_int32_t               swm_debug = 0
 106                             | SWM_D_MISC
 107                             | SWM_D_EVENT
 108                             | SWM_D_WS
 109                             | SWM_D_FOCUS
 110                             | SWM_D_MOVE
 111                             | SWM_D_STACK
 112                             ;
 113 #else
 114 #define DPRINTF(x...)
 115 #define DNPRINTF(n,x...)
 116 #endif
 117
 118 #define LENGTH(x)               (sizeof x / sizeof x[0])
 119 #define MODKEY                  Mod1Mask
 120 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
 121 #define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
 122
 123 #define X(r)            (r)->g.x
 124 #define Y(r)            (r)->g.y
 125 #define WIDTH(r)        (r)->g.w
 126 #define HEIGHT(r)       (r)->g.h
 127
 128 char                    **start_argv;
 129 Atom                    astate;
 130 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 131 int                     other_wm;
 132 int                     running = 1;
 133 int                     xrandr_eventbase;
 134 int                     ignore_enter = 0;
 135 unsigned int            numlockmask = 0;
 136 Display                 *display;
 137
 138 int                     cycle_empty = 0;
 139 int                     cycle_visible = 0;
 140
 141 /* dialog windows */
 142 double                  dialog_ratio = .6;
 143 /* status bar */
 144 #define SWM_BAR_MAX     (128)
 145 char                    *bar_argv[] = { NULL, NULL };
 146 int                     bar_pipe[2];
 147 char                    bar_ext[SWM_BAR_MAX];
 148 sig_atomic_t            bar_alarm = 0;
 149 int                     bar_enabled = 1;
 150 int                     bar_extra = 1;
 151 int                     bar_extra_running = 0;
 152 int                     bar_verbose = 1;
 153 int                     bar_height = 0;
 154 pid_t                   bar_pid;
 155 GC                      bar_gc;
 156 XGCValues               bar_gcv;
 157 int                     bar_fidx = 0;
 158 XFontStruct             *bar_fs;
 159 char                    *bar_fonts[] = {
 160                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 161                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 162                             NULL
 163 };
 164
 165 /* terminal + args */
 166 char                    *spawn_term[] = { "xterm", NULL };
 167 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL,
 168                             "-nb", NULL, "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 169
 170 #define SWM_MENU_FN     (2)
 171 #define SWM_MENU_NB     (4)
 172 #define SWM_MENU_NF     (6)
 173 #define SWM_MENU_SB     (8)
 174 #define SWM_MENU_SF     (10)
 175
 176 /* layout manager data */
 177 struct swm_geometry {
 178         int                     x;
 179         int                     y;
 180         int                     w;
 181         int                     h;
 182 };
 183
 184 struct swm_screen;
 185 struct workspace;
 186
 187 /* virtual "screens" */
 188 struct swm_region {
 189         TAILQ_ENTRY(swm_region) entry;
 190         struct swm_geometry     g;
 191         Window                  bar_window;
 192         struct workspace        *ws;    /* current workspace on this region */
 193         struct swm_screen       *s;     /* screen idx */
 194 };
 195 TAILQ_HEAD(swm_region_list, swm_region);
 196
 197
 198 struct ws_win {
 199         TAILQ_ENTRY(ws_win)     entry;
 200         Window                  id;
 201         struct swm_geometry     g;
 202         int                     got_focus;
 203         int                     floating;
 204         int                     transient;
 205         struct workspace        *ws;    /* always valid */
 206         struct swm_screen       *s;     /* always valid, never changes */
 207         XWindowAttributes       wa;
 208 };
 209 TAILQ_HEAD(ws_win_list, ws_win);
 210
 211 /* layout handlers */
 212 void    stack(void);
 213 void    vertical_config(struct workspace *, int);
 214 void    vertical_stack(struct workspace *, struct swm_geometry *);
 215 void    horizontal_config(struct workspace *, int);
 216 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 217 void    max_stack(struct workspace *, struct swm_geometry *);
 218
 219 void    grabbuttons(struct ws_win *, int);
 220
 221 struct layout {
 222         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 223         void            (*l_config)(struct workspace *, int);
 224 } layouts[] =  {
 225         /* stack,               configure */
 226         { vertical_stack,       vertical_config},
 227         { horizontal_stack,     horizontal_config},
 228         { max_stack,            NULL},
 229         { NULL,                 NULL},
 230 };
 231
 232 #define SWM_H_SLICE             (32)
 233 #define SWM_V_SLICE             (32)
 234
 235 /* define work spaces */
 236 struct workspace {
 237         int                     idx;            /* workspace index */
 238         int                     restack;        /* restack on switch */
 239         struct layout           *cur_layout;    /* current layout handlers */
 240         struct ws_win           *focus;         /* may be NULL */
 241         struct swm_region       *r;             /* may be NULL */
 242         struct ws_win_list      winlist;        /* list of windows in ws */
 243
 244         /* stacker state */
 245         struct {
 246                                 int horizontal_msize;
 247                                 int horizontal_mwin;
 248                                 int vertical_msize;
 249                                 int vertical_mwin;
 250         } l_state;
 251 };
 252
 253 enum    { SWM_S_COLOR_BAR, SWM_S_COLOR_BAR_BORDER, SWM_S_COLOR_BAR_FONT,
 254           SWM_S_COLOR_FOCUS, SWM_S_COLOR_UNFOCUS, SWM_S_COLOR_MAX };
 255
 256 /* physical screen mapping */
 257 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 258 struct swm_screen {
 259         int                     idx;            /* screen index */
 260         struct swm_region_list  rl;     /* list of regions on this screen */
 261         Window                  root;
 262         int                     xrandr_support;
 263         struct workspace        ws[SWM_WS_MAX];
 264
 265         /* colors */
 266         struct {
 267                 unsigned long   color;
 268                 char            *name;
 269         } c[SWM_S_COLOR_MAX];
 270 };
 271 struct swm_screen       *screens;
 272 int                     num_screens;
 273
 274 struct ws_win           *cur_focus = NULL;
 275
 276 /* args to functions */
 277 union arg {
 278         int                     id;
 279 #define SWM_ARG_ID_FOCUSNEXT    (0)
 280 #define SWM_ARG_ID_FOCUSPREV    (1)
 281 #define SWM_ARG_ID_FOCUSMAIN    (2)
 282 #define SWM_ARG_ID_SWAPNEXT     (3)
 283 #define SWM_ARG_ID_SWAPPREV     (4)
 284 #define SWM_ARG_ID_SWAPMAIN     (5)
 285 #define SWM_ARG_ID_MASTERSHRINK (6)
 286 #define SWM_ARG_ID_MASTERGROW   (7)
 287 #define SWM_ARG_ID_MASTERADD    (8)
 288 #define SWM_ARG_ID_MASTERDEL    (9)
 289 #define SWM_ARG_ID_STACKRESET   (10)
 290 #define SWM_ARG_ID_STACKINIT    (11)
 291 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 292 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 293         char                    **argv;
 294 };
 295
 296 unsigned long
 297 name_to_color(char *colorname)
 298 {
 299         Colormap                cmap;
 300         Status                  status;
 301         XColor                  screen_def, exact_def;
 302         unsigned long           result = 0;
 303         char                    cname[32] = "#";
 304
 305         cmap = DefaultColormap(display, screens[0].idx);
 306         status = XAllocNamedColor(display, cmap, colorname,
 307             &screen_def, &exact_def);
 308         if (!status) {
 309                 strlcat(cname, colorname + 2, sizeof cname - 1);
 310                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 311                     &exact_def);
 312         }
 313         if (status)
 314                 result = screen_def.pixel;
 315         else
 316                 fprintf(stderr, "color '%s' not found.\n", colorname);
 317
 318         return (result);
 319 }
 320
 321 void
 322 setscreencolor(char *val, int i, int c)
 323 {
 324         if (i > 0 && i <= ScreenCount(display)) {
 325                 screens[i - 1].c[c].color = name_to_color(val);
 326                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 327                         errx(1, "strdup");
 328         } else if (i == -1) {
 329                 for (i = 0; i < ScreenCount(display); i++)
 330                         screens[i].c[c].color = name_to_color(val);
 331                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 332                                 errx(1, "strdup");
 333         } else
 334                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 335                     i, ScreenCount(display));
 336 }
 337
 338 int
 339 varmatch(char *var, char *name, int *index)
 340 {
 341         char                    *p, buf[5];
 342         int                     i;
 343
 344         i = strncmp(var, name, 255);
 345         if (index == NULL)
 346                 return (i);
 347
 348         *index = -1;
 349         if (i <= 0)
 350                 return (i);
 351         p = var + strlen(name);
 352         if (*p++ != '[')
 353                 return (i);
 354         bzero(buf, sizeof buf);
 355         i = 0;
 356         while (isdigit(*p) && i < sizeof buf)
 357                 buf[i++] = *p++;
 358         if (i == 0 || i >= sizeof buf || *p != ']')
 359                 return (1);
 360         *index = strtonum(buf, 0, 99, NULL);
 361         return (0);
 362 }
 363
 364 /* conf file stuff */
 365 #define SWM_CONF_WS     "\n= \t"
 366 #define SWM_CONF_FILE   "scrotwm.conf"
 367 int
 368 conf_load(char *filename)
 369 {
 370         FILE                    *config;
 371         char                    *line, *cp, *var, *val;
 372         size_t                  len, lineno = 0;
 373         int                     i, sc;
 374
 375         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 376
 377         if (filename == NULL)
 378                 return (1);
 379
 380         if ((config = fopen(filename, "r")) == NULL)
 381                 return (1);
 382
 383         for (sc = ScreenCount(display);;) {
 384                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 385                         if (feof(config))
 386                                 break;
 387                 cp = line;
 388                 cp += (long)strspn(cp, SWM_CONF_WS);
 389                 if (cp[0] == '\0') {
 390                         /* empty line */
 391                         free(line);
 392                         continue;
 393                 }
 394                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 395                         break;
 396                 cp += (long)strspn(cp, SWM_CONF_WS);
 397                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 398                         break;
 399
 400                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 401                 switch (var[0]) {
 402                 case 'b':
 403                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 404                                 bar_enabled = atoi(val);
 405                         else if (!varmatch(var, "bar_border", &i))
 406                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 407                         else if (!varmatch(var, "bar_color", &i))
 408                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 409                         else if (!varmatch(var, "bar_font_color", &i))
 410                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 411                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 412                                 asprintf(&bar_fonts[0], "%s", val);
 413                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 414                                 asprintf(&bar_argv[0], "%s", val);
 415                         else
 416                                 goto bad;
 417                         break;
 418
 419                 case 'c':
 420                         if (!varmatch(var, "color_focus", &i))
 421                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 422                         else if (!varmatch(var, "color_unfocus", &i))
 423                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 424                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 425                                 cycle_visible = atoi(val);
 426                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 427                                 cycle_visible = atoi(val);
 428                         else
 429                                 goto bad;
 430                         break;
 431
 432                 case 'd':
 433                         if (!strncmp(var, "dialog_ratio",
 434                             strlen("dialog_ratio"))) {
 435                                 dialog_ratio = atof(val);
 436                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 437                                         dialog_ratio = .6;
 438                         } else
 439                                 goto bad;
 440                         break;
 441
 442                 case 's':
 443                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 444                                 asprintf(&spawn_term[0], "%s", val); /* XXX args? */
 445                         break;
 446                 default:
 447                         goto bad;
 448                 }
 449                 free(line);
 450         }
 451
 452         fclose(config);
 453         return (0);
 454
 455 bad:
 456         errx(1, "invalid conf file entry: %s=%s", var, val);
 457 }
 458
 459 void
 460 socket_setnonblock(int fd)
 461 {
 462         int                     flags;
 463
 464         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 465                 err(1, "fcntl F_GETFL");
 466         flags |= O_NONBLOCK;
 467         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 468                 err(1, "fcntl F_SETFL");
 469 }
 470
 471 void
 472 bar_print(struct swm_region *r, char *s)
 473 {
 474         XClearWindow(display, r->bar_window);
 475         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 476         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 477             strlen(s));
 478 }
 479
 480 void
 481 bar_extra_stop(void)
 482 {
 483         if (bar_pipe[0]) {
 484                 close(bar_pipe[0]);
 485                 bzero(bar_pipe, sizeof bar_pipe);
 486         }
 487         if (bar_pid) {
 488                 kill(bar_pid, SIGTERM);
 489                 bar_pid = 0;
 490         }
 491         strlcpy(bar_ext, "", sizeof bar_ext);
 492         bar_extra = 0;
 493 }
 494
 495 void
 496 bar_update(void)
 497 {
 498         time_t                  tmt;
 499         struct tm               tm;
 500         struct swm_region       *r;
 501         int                     i, x;
 502         size_t                  len;
 503         char                    s[SWM_BAR_MAX];
 504         char                    loc[SWM_BAR_MAX];
 505         char                    *b;
 506
 507         if (bar_enabled == 0)
 508                 return;
 509
 510         if (bar_extra && bar_extra_running) {
 511                 /* ignore short reads; it'll correct itself */
 512                 while ((b = fgetln(stdin, &len)) != NULL)
 513                         if (b && b[len - 1] == '\n') {
 514                                 b[len - 1] = '\0';
 515                                 strlcpy(bar_ext, b, sizeof bar_ext);
 516                         }
 517                 if (b == NULL && errno != EAGAIN) {
 518                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 519                             errno, strerror(errno));
 520                         bar_extra_stop();
 521                 }
 522         } else
 523                 strlcpy(bar_ext, "", sizeof bar_ext);
 524
 525         time(&tmt);
 526         localtime_r(&tmt, &tm);
 527         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 528         for (i = 0; i < ScreenCount(display); i++) {
 529                 x = 1;
 530                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 531                         snprintf(loc, sizeof loc, "%s     %d:%d    %s",
 532                             s, x++, r->ws->idx + 1, bar_ext);
 533                         bar_print(r, loc);
 534                 }
 535         }
 536         XSync(display, False);
 537
 538         alarm(60);
 539 }
 540
 541 void
 542 bar_signal(int sig)
 543 {
 544         bar_alarm = 1;
 545 }
 546
 547 void
 548 bar_toggle(struct swm_region *r, union arg *args)
 549 {
 550         struct swm_region       *tmpr;
 551         int                     i, j, sc = ScreenCount(display);
 552
 553         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 554
 555         if (bar_enabled) {
 556                 for (i = 0; i < sc; i++)
 557                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 558                                 XUnmapWindow(display, tmpr->bar_window);
 559         } else {
 560                 for (i = 0; i < sc; i++)
 561                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 562                                 XMapRaised(display, tmpr->bar_window);
 563         }
 564         bar_enabled = !bar_enabled;
 565         XSync(display, False);
 566         for (i = 0; i < sc; i++)
 567                 for (j = 0; j < SWM_WS_MAX; j++)
 568                         screens[i].ws[j].restack = 1;
 569
 570         stack();
 571         /* must be after stack */
 572         for (i = 0; i < sc; i++)
 573                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 574                         bar_update();
 575 }
 576
 577 void
 578 bar_refresh(void)
 579 {
 580         XSetWindowAttributes    wa;
 581         struct swm_region       *r;
 582         int                     i;
 583
 584         /* do this here because the conf file is in memory */
 585         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 586                 /* launch external status app */
 587                 bar_extra_running = 1;
 588                 if (pipe(bar_pipe) == -1)
 589                         err(1, "pipe error");
 590                 socket_setnonblock(bar_pipe[0]);
 591                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 592                 if (dup2(bar_pipe[0], 0) == -1)
 593                         errx(1, "dup2");
 594                 if (dup2(bar_pipe[1], 1) == -1)
 595                         errx(1, "dup2");
 596                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 597                         err(1, "could not disable SIGPIPE");
 598                 switch (bar_pid = fork()) {
 599                 case -1:
 600                         err(1, "cannot fork");
 601                         break;
 602                 case 0: /* child */
 603                         close(bar_pipe[0]);
 604                         execvp(bar_argv[0], bar_argv);
 605                         err(1, "%s external app failed", bar_argv[0]);
 606                         break;
 607                 default: /* parent */
 608                         close(bar_pipe[1]);
 609                         break;
 610                 }
 611         }
 612
 613         bzero(&wa, sizeof wa);
 614         for (i = 0; i < ScreenCount(display); i++)
 615                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 616                         wa.border_pixel =
 617                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 618                         wa.background_pixel =
 619                             screens[i].c[SWM_S_COLOR_BAR].color;
 620                         XChangeWindowAttributes(display, r->bar_window,
 621                             CWBackPixel | CWBorderPixel, &wa);
 622                 }
 623         bar_update();
 624 }
 625
 626 void
 627 bar_setup(struct swm_region *r)
 628 {
 629         int                     i;
 630
 631         for (i = 0; bar_fonts[i] != NULL; i++) {
 632                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 633                 if (bar_fs) {
 634                         bar_fidx = i;
 635                         break;
 636                 }
 637         }
 638         if (bar_fonts[i] == NULL)
 639                         errx(1, "couldn't load font");
 640         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 641
 642         r->bar_window = XCreateSimpleWindow(display,
 643             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 644             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 645             r->s->c[SWM_S_COLOR_BAR].color);
 646         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 647         XSetFont(display, bar_gc, bar_fs->fid);
 648         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 649         if (bar_enabled)
 650                 XMapRaised(display, r->bar_window);
 651         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 652
 653         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 654                 err(1, "could not install bar_signal");
 655         bar_refresh();
 656 }
 657
 658 void
 659 config_win(struct ws_win *win)
 660 {
 661         XConfigureEvent         ce;
 662
 663         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 664             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 665         ce.type = ConfigureNotify;
 666         ce.display = display;
 667         ce.event = win->id;
 668         ce.window = win->id;
 669         ce.x = win->g.x;
 670         ce.y = win->g.y;
 671         ce.width = win->g.w;
 672         ce.height = win->g.h;
 673         ce.border_width = 1; /* XXX store this! */
 674         ce.above = None;
 675         ce.override_redirect = False;
 676         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 677 }
 678
 679 int
 680 count_win(struct workspace *ws, int count_transient)
 681 {
 682         struct ws_win           *win;
 683         int                     count = 0;
 684
 685         TAILQ_FOREACH(win, &ws->winlist, entry) {
 686                 if (count_transient == 0 && win->floating)
 687                         continue;
 688                 if (count_transient == 0 && win->transient)
 689                         continue;
 690                 count++;
 691         }
 692         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 693
 694         return (count);
 695 }
 696
 697 void
 698 quit(struct swm_region *r, union arg *args)
 699 {
 700         DNPRINTF(SWM_D_MISC, "quit\n");
 701         running = 0;
 702 }
 703
 704 void
 705 restart(struct swm_region *r, union arg *args)
 706 {
 707         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 708
 709         /* disable alarm because the following code may not be interrupted */
 710         alarm(0);
 711         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 712                 errx(1, "can't disable alarm");
 713
 714         bar_extra_stop();
 715         bar_extra = 1;
 716         XCloseDisplay(display);
 717         execvp(start_argv[0], start_argv);
 718         fprintf(stderr, "execvp failed\n");
 719         perror(" failed");
 720         quit(NULL, NULL);
 721 }
 722
 723 struct swm_region *
 724 root_to_region(Window root)
 725 {
 726         struct swm_region       *r;
 727         Window                  rr, cr;
 728         int                     i, x, y, wx, wy;
 729         unsigned int            mask;
 730
 731         for (i = 0; i < ScreenCount(display); i++)
 732                 if (screens[i].root == root)
 733                         break;
 734
 735         if (XQueryPointer(display, screens[i].root,
 736             &rr, &cr, &x, &y, &wx, &wy, &mask) == False) {
 737                 /* if we can't query the pointer, grab the first region */
 738                 r = TAILQ_FIRST(&screens[i].rl);
 739         } else {
 740                 /* otherwise, choose a region based on pointer location */
 741                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 742                         if (x > X(r) && x < X(r) + WIDTH(r) &&
 743                             y > Y(r) && y < Y(r) + HEIGHT(r))
 744                                 break;
 745                 }
 746
 747                 if (r == NULL)
 748                         r = TAILQ_FIRST(&screens[i].rl);
 749         }
 750         return (r);
 751 }
 752
 753 struct ws_win *
 754 find_window(Window id)
 755 {
 756         struct ws_win           *win;
 757         int                     i, j;
 758
 759         for (i = 0; i < ScreenCount(display); i++)
 760                 for (j = 0; j < SWM_WS_MAX; j++)
 761                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 762                                 if (id == win->id)
 763                                         return (win);
 764         return (NULL);
 765 }
 766
 767 void
 768 spawn(struct swm_region *r, union arg *args)
 769 {
 770         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 771         /*
 772          * The double-fork construct avoids zombie processes and keeps the code
 773          * clean from stupid signal handlers.
 774          */
 775         if (fork() == 0) {
 776                 if (fork() == 0) {
 777                         if (display)
 778                                 close(ConnectionNumber(display));
 779                         setsid();
 780                         execvp(args->argv[0], args->argv);
 781                         fprintf(stderr, "execvp failed\n");
 782                         perror(" failed");
 783                 }
 784                 exit(0);
 785         }
 786         wait(0);
 787 }
 788
 789
 790 void
 791 spawnmenu(struct swm_region *r, union arg *args)
 792 {
 793         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
 794
 795         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
 796         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
 797         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
 798         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
 799         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
 800
 801         spawn(r, args);
 802 }
 803
 804 void
 805 unfocus_all(void)
 806 {
 807         struct ws_win           *win;
 808         int                     i, j;
 809
 810         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
 811
 812         for (i = 0; i < ScreenCount(display); i++)
 813                 for (j = 0; j < SWM_WS_MAX; j++)
 814                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
 815                                 if (win->ws->r == NULL)
 816                                         continue;
 817                                 grabbuttons(win, 0);
 818                                 XSetWindowBorder(display, win->id,
 819                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
 820                                 win->got_focus = 0;
 821                                 win->ws->focus = NULL;
 822                                 cur_focus = NULL;
 823                         }
 824 }
 825
 826 void
 827 focus_win(struct ws_win *win)
 828 {
 829         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
 830
 831         if (win == NULL)
 832                 return;
 833
 834         unfocus_all();
 835         win->ws->focus = win;
 836         if (win->ws->r != NULL) {
 837                 cur_focus = win;
 838                 if (!win->got_focus) {
 839                         XSetWindowBorder(display, win->id,
 840                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
 841                         grabbuttons(win, 1);
 842                 }
 843                 win->got_focus = 1;
 844                 XSetInputFocus(display, win->id,
 845                     RevertToPointerRoot, CurrentTime);
 846         }
 847 }
 848
 849 void
 850 switchws(struct swm_region *r, union arg *args)
 851 {
 852         int                     wsid = args->id;
 853         struct swm_region       *this_r, *other_r;
 854         struct ws_win           *win;
 855         struct workspace        *new_ws, *old_ws;
 856
 857         this_r = r;
 858         old_ws = this_r->ws;
 859         new_ws = &this_r->s->ws[wsid];
 860
 861         DNPRINTF(SWM_D_WS, "switchws screen %d region %dx%d+%d+%d: "
 862             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
 863             old_ws->idx, wsid);
 864
 865         if (new_ws == old_ws)
 866                 return;
 867
 868         other_r = new_ws->r;
 869         if (!other_r) {
 870                 /* if the other workspace is hidden, switch windows */
 871                 /* map new window first to prevent ugly blinking */
 872                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
 873                         XMapRaised(display, win->id);
 874
 875                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
 876                         XUnmapWindow(display, win->id);
 877
 878                 old_ws->r = NULL;
 879                 old_ws->restack = 1;
 880         } else {
 881                 other_r->ws = old_ws;
 882                 old_ws->r = other_r;
 883         }
 884         this_r->ws = new_ws;
 885         new_ws->r = this_r;
 886
 887         ignore_enter = 1;
 888         /* set focus */
 889         if (new_ws->focus)
 890                 focus_win(new_ws->focus);
 891         stack();
 892         bar_update();
 893 }
 894
 895 void
 896 cyclews(struct swm_region *r, union arg *args)
 897 {
 898         union                   arg a;
 899         struct swm_screen       *s = r->s;
 900
 901         DNPRINTF(SWM_D_WS, "cyclews id %d "
 902             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 903             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 904
 905         a.id = r->ws->idx;
 906
 907         do {
 908                 switch (args->id) {
 909                 case SWM_ARG_ID_CYCLEWS_UP:
 910                         if (a.id < SWM_WS_MAX - 1)
 911                                 a.id++;
 912                         else
 913                                 a.id = 0;
 914                         break;
 915                 case SWM_ARG_ID_CYCLEWS_DOWN:
 916                         if (a.id > 0)
 917                                 a.id--;
 918                         else
 919                                 a.id = SWM_WS_MAX - 1;
 920                         break;
 921                 default:
 922                         return;
 923                 };
 924
 925                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
 926                         continue;
 927                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
 928                         continue;
 929
 930                 switchws(r, &a);
 931         } while (a.id != r->ws->idx);
 932 }
 933
 934 void
 935 swapwin(struct swm_region *r, union arg *args)
 936 {
 937         struct ws_win           *target;
 938         struct ws_win_list      *wl;
 939
 940
 941         DNPRINTF(SWM_D_WS, "swapwin id %d "
 942             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 943             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 944         if (cur_focus == NULL)
 945                 return;
 946
 947         wl = &cur_focus->ws->winlist;
 948
 949         switch (args->id) {
 950         case SWM_ARG_ID_SWAPPREV:
 951                 target = TAILQ_PREV(cur_focus, ws_win_list, entry);
 952                 TAILQ_REMOVE(wl, cur_focus, entry);
 953                 if (target == NULL)
 954                         TAILQ_INSERT_TAIL(wl, cur_focus, entry);
 955                 else
 956                         TAILQ_INSERT_BEFORE(target, cur_focus, entry);
 957                 break;
 958         case SWM_ARG_ID_SWAPNEXT:
 959                 target = TAILQ_NEXT(cur_focus, entry);
 960                 TAILQ_REMOVE(wl, cur_focus, entry);
 961                 if (target == NULL)
 962                         TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 963                 else
 964                         TAILQ_INSERT_AFTER(wl, target, cur_focus, entry);
 965                 break;
 966         case SWM_ARG_ID_SWAPMAIN:
 967                 target = TAILQ_FIRST(wl);
 968                 if (target == cur_focus)
 969                         return;
 970                 TAILQ_REMOVE(wl, target, entry);
 971                 TAILQ_INSERT_BEFORE(cur_focus, target, entry);
 972                 TAILQ_REMOVE(wl, cur_focus, entry);
 973                 TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 974                 break;
 975         default:
 976                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
 977                 return;
 978         }
 979
 980         ignore_enter = 2;
 981         stack();
 982 }
 983
 984 void
 985 focus(struct swm_region *r, union arg *args)
 986 {
 987         struct ws_win           *winfocus, *winlostfocus;
 988         struct ws_win_list      *wl;
 989
 990         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
 991         if (cur_focus == NULL)
 992                 return;
 993
 994         wl = &cur_focus->ws->winlist;
 995
 996         winlostfocus = cur_focus;
 997
 998         switch (args->id) {
 999         case SWM_ARG_ID_FOCUSPREV:
1000                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1001                 if (winfocus == NULL)
1002                         winfocus = TAILQ_LAST(wl, ws_win_list);
1003                 break;
1004
1005         case SWM_ARG_ID_FOCUSNEXT:
1006                 winfocus = TAILQ_NEXT(cur_focus, entry);
1007                 if (winfocus == NULL)
1008                         winfocus = TAILQ_FIRST(wl);
1009                 break;
1010
1011         case SWM_ARG_ID_FOCUSMAIN:
1012                 winfocus = TAILQ_FIRST(wl);
1013                 break;
1014
1015         default:
1016                 return;
1017         }
1018
1019         if (winfocus == winlostfocus)
1020                 return;
1021
1022         focus_win(winfocus);
1023         XSync(display, False);
1024 }
1025
1026 void
1027 cycle_layout(struct swm_region *r, union arg *args)
1028 {
1029         struct workspace        *ws = r->ws;
1030
1031         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1032
1033         ws->cur_layout++;
1034         if (ws->cur_layout->l_stack == NULL)
1035                 ws->cur_layout = &layouts[0];
1036         ignore_enter = 1;
1037
1038         stack();
1039 }
1040
1041 void
1042 stack_config(struct swm_region *r, union arg *args)
1043 {
1044         struct workspace        *ws = r->ws;
1045
1046         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1047             args->id, ws->idx);
1048
1049         if (ws->cur_layout->l_config != NULL)
1050                 ws->cur_layout->l_config(ws, args->id);
1051
1052         if (args->id != SWM_ARG_ID_STACKINIT);
1053                 stack();
1054 }
1055
1056 void
1057 stack(void) {
1058         struct swm_geometry     g;
1059         struct swm_region       *r;
1060         int                     i, j;
1061
1062         DNPRINTF(SWM_D_STACK, "stack\n");
1063
1064         for (i = 0; i < ScreenCount(display); i++) {
1065                 j = 0;
1066                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1067                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1068                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1069
1070                         /* start with screen geometry, adjust for bar */
1071                         g = r->g;
1072                         g.w -= 2;
1073                         g.h -= 2;
1074                         if (bar_enabled) {
1075                                 g.y += bar_height;
1076                                 g.h -= bar_height;
1077                         }
1078
1079                         r->ws->restack = 0;
1080                         r->ws->cur_layout->l_stack(r->ws, &g);
1081                 }
1082         }
1083         XSync(display, False);
1084 }
1085
1086 void
1087 stack_floater(struct ws_win *win, struct swm_region *r)
1088 {
1089         unsigned int            mask;
1090         XWindowChanges          wc;
1091
1092         bzero(&wc, sizeof wc);
1093         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1094         wc.border_width = 1;
1095         if (win->transient) {
1096                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1097                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1098         }
1099         wc.width = win->g.w;
1100         wc.height = win->g.h;
1101         wc.x = (WIDTH(r) - win->g.w) / 2;
1102         wc.y = (HEIGHT(r) - win->g.h) / 2;
1103
1104         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1105             win->id, wc.x, wc.y, wc.width, wc.height);
1106
1107         XConfigureWindow(display, win->id, mask, &wc);
1108 }
1109
1110
1111 void
1112 vertical_config(struct workspace *ws, int id)
1113 {
1114         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1115
1116         switch (id) {
1117         case SWM_ARG_ID_STACKRESET:
1118         case SWM_ARG_ID_STACKINIT:
1119                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1120                 ws->l_state.vertical_mwin = 1;
1121                 break;
1122         case SWM_ARG_ID_MASTERSHRINK:
1123                 if (ws->l_state.vertical_msize > 1)
1124                         ws->l_state.vertical_msize--;
1125                 break;
1126         case SWM_ARG_ID_MASTERGROW:
1127                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1128                         ws->l_state.vertical_msize++;
1129                 break;
1130         case SWM_ARG_ID_MASTERADD:
1131                 ws->l_state.vertical_mwin++;
1132                 break;
1133         case SWM_ARG_ID_MASTERDEL:
1134                 if (ws->l_state.vertical_mwin > 0)
1135                         ws->l_state.vertical_mwin--;
1136                 break;
1137         default:
1138                 return;
1139         }
1140 }
1141
1142 void
1143 vertical_stack(struct workspace *ws, struct swm_geometry *g) {
1144         XWindowChanges          wc;
1145         struct swm_geometry     gg = *g;
1146         struct ws_win           *win, *winfocus;
1147         int                     i, j, split, colno, hrh, winno, main_width;
1148         unsigned int            mask;
1149
1150         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1151
1152         if ((winno = count_win(ws, 0)) == 0)
1153                 return;
1154
1155         if (ws->focus == NULL)
1156                 ws->focus = TAILQ_FIRST(&ws->winlist);
1157         winfocus = cur_focus ? cur_focus : ws->focus;
1158
1159         if (ws->l_state.vertical_mwin &&
1160             winno > ws->l_state.vertical_mwin) {
1161                 split = ws->l_state.vertical_mwin;
1162                 colno = split;
1163                 main_width = (g->w / SWM_V_SLICE) *
1164                    ws->l_state.vertical_msize;
1165                 gg.w = main_width;
1166         } else {
1167                 colno = winno;
1168                 split = 0;
1169         }
1170         hrh = g->h / colno;
1171         gg.h = hrh - 2;
1172
1173         i = j = 0;
1174         TAILQ_FOREACH(win, &ws->winlist, entry) {
1175                 if (split && i == split) {
1176                         colno = winno - split;
1177                         hrh = (g->h / colno);
1178                         gg.x += main_width + 2;
1179                         gg.w = g->w - (main_width + 2);
1180                         gg.h = hrh - 2;
1181                         j = 0;
1182                 }
1183                 if (j == colno - 1)
1184                         gg.h = (hrh + (g->h - (colno * hrh)));
1185
1186                 if (j == 0)
1187                         gg.y = g->y;
1188                 else
1189                         gg.y += hrh;
1190
1191
1192                 if (win->transient != 0 || win->floating != 0)
1193                         stack_floater(win, ws->r);
1194                 else {
1195                         bzero(&wc, sizeof wc);
1196                         wc.border_width = 1;
1197                         win->g.x = wc.x = gg.x;
1198                         win->g.y = wc.y = gg.y;
1199                         win->g.w = wc.width = gg.w;
1200                         win->g.h = wc.height = gg.h;
1201                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1202                         XConfigureWindow(display, win->id, mask, &wc);
1203                 }
1204
1205                 XMapRaised(display, win->id);
1206                 i++;
1207                 j++;
1208         }
1209
1210         if (winfocus)
1211                 focus_win(winfocus); /* has to be done outside of the loop */
1212 }
1213
1214
1215 void
1216 horizontal_config(struct workspace *ws, int id)
1217 {
1218         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1219
1220         switch (id) {
1221         case SWM_ARG_ID_STACKRESET:
1222         case SWM_ARG_ID_STACKINIT:
1223                 ws->l_state.horizontal_mwin = 1;
1224                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1225                 break;
1226         case SWM_ARG_ID_MASTERSHRINK:
1227                 if (ws->l_state.horizontal_msize > 1)
1228                         ws->l_state.horizontal_msize--;
1229                 break;
1230         case SWM_ARG_ID_MASTERGROW:
1231                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1232                         ws->l_state.horizontal_msize++;
1233                 break;
1234         case SWM_ARG_ID_MASTERADD:
1235                 ws->l_state.horizontal_mwin++;
1236                 break;
1237         case SWM_ARG_ID_MASTERDEL:
1238                 if (ws->l_state.horizontal_mwin > 0)
1239                         ws->l_state.horizontal_mwin--;
1240                 break;
1241         default:
1242                 return;
1243         }
1244 }
1245
1246 void
1247 horizontal_stack(struct workspace *ws, struct swm_geometry *g) {
1248         XWindowChanges          wc;
1249         struct swm_geometry     gg = *g;
1250         struct ws_win           *win, *winfocus;
1251         int                     i, j, split, rowno, hrw, winno, main_height;
1252         unsigned int            mask;
1253
1254         DNPRINTF(SWM_D_STACK, "horizontal_stack: workspace: %d\n", ws->idx);
1255
1256         if ((winno = count_win(ws, 0)) == 0)
1257                 return;
1258
1259         if (ws->focus == NULL)
1260                 ws->focus = TAILQ_FIRST(&ws->winlist);
1261         winfocus = cur_focus ? cur_focus : ws->focus;
1262
1263         if (ws->l_state.horizontal_mwin &&
1264             winno > ws->l_state.horizontal_mwin) {
1265                 split = ws->l_state.horizontal_mwin;
1266                 rowno = split;
1267                 main_height = (g->h / SWM_V_SLICE) *
1268                    ws->l_state.horizontal_msize;
1269                 gg.h = main_height;
1270         } else {
1271                 rowno = winno;
1272                 split = 0;
1273         }
1274         hrw = g->w / rowno;
1275         gg.w = hrw - 2;
1276
1277         i = j = 0;
1278         TAILQ_FOREACH(win, &ws->winlist, entry) {
1279                 if (split && i == split) {
1280                         rowno = winno - split;
1281                         hrw = (g->w / rowno);
1282                         gg.y += main_height + 2;
1283                         gg.h = g->h - (main_height + 2);
1284                         gg.w = hrw - 2;
1285                         j = 0;
1286                 }
1287                 if (j == rowno - 1)
1288                         gg.w = (hrw + (g->w - (rowno * hrw)));
1289
1290                 if (j == 0)
1291                         gg.x = g->x;
1292                 else
1293                         gg.x += hrw;
1294
1295                 if (win->transient != 0 || win->floating != 0)
1296                         stack_floater(win, ws->r);
1297                 else {
1298                         bzero(&wc, sizeof wc);
1299                         wc.border_width = 1;
1300                         win->g.x = wc.x = gg.x;
1301                         win->g.y = wc.y = gg.y;
1302                         win->g.w = wc.width = gg.w;
1303                         win->g.h = wc.height = gg.h;
1304                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1305                         XConfigureWindow(display, win->id, mask, &wc);
1306                 }
1307
1308                 XMapRaised(display, win->id);
1309                 j++;
1310                 i++;
1311         }
1312
1313         if (winfocus)
1314                 focus_win(winfocus); /* this has to be done outside of the loop */
1315 }
1316
1317 /* fullscreen view */
1318 void
1319 max_stack(struct workspace *ws, struct swm_geometry *g) {
1320         XWindowChanges          wc;
1321         struct swm_geometry     gg = *g;
1322         struct ws_win           *win, *winfocus;
1323         unsigned int            mask;
1324
1325         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1326
1327         if (count_win(ws, 0) == 0)
1328                 return;
1329
1330         if (ws->focus == NULL)
1331                 ws->focus = TAILQ_FIRST(&ws->winlist);
1332         winfocus = cur_focus ? cur_focus : ws->focus;
1333
1334         TAILQ_FOREACH(win, &ws->winlist, entry) {
1335                 if (win->transient != 0 || win->floating != 0) {
1336                         if (win == ws->focus) {
1337                                 /* XXX maximize? */
1338                                 stack_floater(win, ws->r);
1339                                 XMapRaised(display, win->id);
1340                         } else
1341                                 XUnmapWindow(display, win->id);
1342                 } else {
1343                         bzero(&wc, sizeof wc);
1344                         wc.border_width = 1;
1345                         win->g.x = wc.x = gg.x;
1346                         win->g.y = wc.y = gg.y;
1347                         win->g.w = wc.width = gg.w;
1348                         win->g.h = wc.height = gg.h;
1349                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1350                         XConfigureWindow(display, win->id, mask, &wc);
1351
1352                         if (win == ws->focus) {
1353                                 XMapRaised(display, win->id);
1354                         } else
1355                                 XUnmapWindow(display, win->id);
1356                 }
1357         }
1358
1359         if (winfocus)
1360                 focus_win(winfocus); /* has to be done outside of the loop */
1361 }
1362
1363 void
1364 send_to_ws(struct swm_region *r, union arg *args)
1365 {
1366         int                     wsid = args->id;
1367         struct ws_win           *win = cur_focus;
1368         struct workspace        *ws, *nws;
1369
1370         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1371
1372         ws = win->ws;
1373         nws = &win->s->ws[wsid];
1374
1375         XUnmapWindow(display, win->id);
1376
1377         /* find a window to focus */
1378         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1379         if (ws->focus == NULL)
1380                 ws->focus = TAILQ_FIRST(&ws->winlist);
1381         if (ws->focus == win)
1382                 ws->focus = NULL;
1383
1384         TAILQ_REMOVE(&ws->winlist, win, entry);
1385
1386         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1387         win->ws = nws;
1388
1389         if (count_win(nws, 1) == 1)
1390                 nws->focus = win;
1391         ws->restack = 1;
1392         nws->restack = 1;
1393
1394         stack();
1395 }
1396
1397 void
1398 wkill(struct swm_region *r, union arg *args)
1399 {
1400         DNPRINTF(SWM_D_MISC, "wkill\n");
1401         if(r->ws->focus != NULL)
1402                 XKillClient(display, r->ws->focus->id);
1403 }
1404
1405 /* key definitions */
1406 struct key {
1407         unsigned int            mod;
1408         KeySym                  keysym;
1409         void                    (*func)(struct swm_region *r, union arg *);
1410         union arg               args;
1411 } keys[] = {
1412         /* modifier             key     function                argument */
1413         { MODKEY,               XK_space,       cycle_layout,   {0} },
1414         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1415         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1416         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1417         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1418         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1419         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1420         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1421         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1422         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1423         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1424         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1425         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1426         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1427         { MODKEY,               XK_q,           restart,        {0} },
1428         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1429         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1430         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1431         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1432         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1433         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1434         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1435         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1436         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1437         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1438         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1439         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1440         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1441         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1442         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1443         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1444         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1445         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1446         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1447         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1448         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1449         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1450         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1451         { MODKEY,               XK_b,           bar_toggle,     {0} },
1452         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1453         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1454         { MODKEY | ShiftMask,   XK_x,           wkill,          {0} },
1455 };
1456
1457 void
1458 click(struct swm_region *r, union arg *args)
1459 {
1460         DNPRINTF(SWM_D_MOUSE, "click: button: %d\n", args->id);
1461
1462         switch (args->id) {
1463         case Button1:
1464                 break;
1465         case Button2:
1466                 break;
1467         case Button3:
1468                 break;
1469         default:
1470                 return;
1471         }
1472 }
1473
1474 /* mouse */
1475 enum { client_click, root_click };
1476 struct button {
1477         unsigned int            action;
1478         unsigned int            mask;
1479         unsigned int            button;
1480         void                    (*func)(struct swm_region *r, union arg *);
1481         union arg               args;
1482 } buttons[] = {
1483           /* action             key             mouse button    func            args */
1484         { client_click,         MODKEY,         Button1,        click, {.id=Button1} },
1485 };
1486
1487 void
1488 updatenumlockmask(void)
1489 {
1490         unsigned int            i, j;
1491         XModifierKeymap         *modmap;
1492
1493         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1494         numlockmask = 0;
1495         modmap = XGetModifierMapping(display);
1496         for (i = 0; i < 8; i++)
1497                 for (j = 0; j < modmap->max_keypermod; j++)
1498                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1499                           == XKeysymToKeycode(display, XK_Num_Lock))
1500                                 numlockmask = (1 << i);
1501
1502         XFreeModifiermap(modmap);
1503 }
1504
1505 void
1506 grabkeys(void)
1507 {
1508         unsigned int            i, j, k;
1509         KeyCode                 code;
1510         unsigned int            modifiers[] =
1511             { 0, LockMask, numlockmask, numlockmask | LockMask };
1512
1513         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1514         updatenumlockmask();
1515
1516         for (k = 0; k < ScreenCount(display); k++) {
1517                 if (TAILQ_EMPTY(&screens[k].rl))
1518                         continue;
1519                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1520                 for (i = 0; i < LENGTH(keys); i++) {
1521                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1522                                 for (j = 0; j < LENGTH(modifiers); j++)
1523                                         XGrabKey(display, code,
1524                                             keys[i].mod | modifiers[j],
1525                                             screens[k].root, True,
1526                                             GrabModeAsync, GrabModeAsync);
1527                 }
1528         }
1529 }
1530
1531 void
1532 grabbuttons(struct ws_win *win, int focused)
1533 {
1534         unsigned int            i, j;
1535         unsigned int            modifiers[] =
1536             { 0, LockMask, numlockmask, numlockmask|LockMask };
1537
1538         updatenumlockmask();
1539         XUngrabButton(display, AnyButton, AnyModifier, win->id);
1540         if(focused) {
1541                 for (i = 0; i < LENGTH(buttons); i++)
1542                         if (buttons[i].action == client_click)
1543                                 for (j = 0; j < LENGTH(modifiers); j++)
1544                                         XGrabButton(display, buttons[i].button,
1545                                             buttons[i].mask | modifiers[j],
1546                                             win->id, False, BUTTONMASK,
1547                                             GrabModeAsync, GrabModeSync, None,
1548                                             None);
1549         } else
1550                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
1551                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
1552 }
1553
1554 void
1555 expose(XEvent *e)
1556 {
1557         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1558 }
1559
1560 void
1561 keypress(XEvent *e)
1562 {
1563         unsigned int            i;
1564         KeySym                  keysym;
1565         XKeyEvent               *ev = &e->xkey;
1566
1567         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1568
1569         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1570         for (i = 0; i < LENGTH(keys); i++)
1571                 if (keysym == keys[i].keysym
1572                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1573                    && keys[i].func)
1574                         keys[i].func(root_to_region(ev->root),
1575                             &(keys[i].args));
1576 }
1577
1578 void
1579 buttonpress(XEvent *e)
1580 {
1581         XButtonPressedEvent     *ev = &e->xbutton;
1582
1583         struct ws_win           *win;
1584         int                     i, action;
1585
1586         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
1587
1588         action = root_click;
1589         if ((win = find_window(ev->window)) == NULL)
1590                 return;
1591         else {
1592                 focus_win(win);
1593                 action = client_click;
1594         }
1595
1596         for (i = 0; i < LENGTH(buttons); i++)
1597                 if (action == buttons[i].action && buttons[i].func &&
1598                     buttons[i].button == ev->button &&
1599                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
1600                         buttons[i].func(root_to_region(ev->root),
1601                         &buttons[i].args);
1602 }
1603
1604 void
1605 set_win_state(struct ws_win *win, long state)
1606 {
1607         long                    data[] = {state, None};
1608
1609         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
1610
1611         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
1612             (unsigned char *)data, 2);
1613 }
1614
1615 struct ws_win *
1616 manage_window(Window id, struct workspace *ws)
1617 {
1618         Window                  trans;
1619         struct ws_win           *win;
1620         XClassHint              ch;
1621
1622         TAILQ_FOREACH(win, &ws->winlist, entry) {
1623                 if (win->id == id)
1624                         return (win);   /* already being managed */
1625         }
1626
1627         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1628                 errx(1, "calloc: failed to allocate memory for new window");
1629
1630         win->id = id;
1631         win->ws = ws;
1632         win->s = ws->r->s;      /* this never changes */
1633         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
1634
1635         /* make new win focused */
1636         focus_win(win);
1637
1638         XGetTransientForHint(display, win->id, &trans);
1639         if (trans) {
1640                 win->transient = trans;
1641                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
1642                     (unsigned)win->id, win->transient);
1643         }
1644         XGetWindowAttributes(display, id, &win->wa);
1645         win->g.w = win->wa.width;
1646         win->g.h = win->wa.height;
1647         win->g.x = win->wa.x;
1648         win->g.y = win->wa.y;
1649
1650         /* XXX make this a table */
1651         bzero(&ch, sizeof ch);
1652         if (XGetClassHint(display, win->id, &ch)) {
1653                 /*fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name); */
1654                 if (!strcmp(ch.res_class, "MPlayer") && !strcmp(ch.res_name, "xv")) {
1655                         win->floating = 1;
1656                 }
1657                 if (ch.res_class)
1658                         XFree(ch.res_class);
1659                 if (ch.res_name)
1660                         XFree(ch.res_name);
1661         }
1662
1663         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
1664             PropertyChangeMask | StructureNotifyMask);
1665
1666         set_win_state(win, NormalState);
1667
1668         return (win);
1669 }
1670
1671 void
1672 configurerequest(XEvent *e)
1673 {
1674         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1675         struct ws_win           *win;
1676         int                     new = 1;
1677         XWindowChanges          wc;
1678
1679         if ((win = find_window(ev->window)) == NULL)
1680                 new = 1;
1681
1682         if (new) {
1683                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
1684                     ev->window);
1685                 bzero(&wc, sizeof wc);
1686                 wc.x = ev->x;
1687                 wc.y = ev->y;
1688                 wc.width = ev->width;
1689                 wc.height = ev->height;
1690                 wc.border_width = ev->border_width;
1691                 wc.sibling = ev->above;
1692                 wc.stack_mode = ev->detail;
1693                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
1694         } else {
1695                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
1696                     ev->window);
1697                 if (win->floating) {
1698                         if (ev->value_mask & CWX)
1699                                 win->g.x = ev->x;
1700                         if (ev->value_mask & CWY)
1701                                 win->g.y = ev->y;
1702                         if (ev->value_mask & CWWidth)
1703                                 win->g.w = ev->width;
1704                         if (ev->value_mask & CWHeight)
1705                                 win->g.h = ev->height;
1706                         if (win->ws->r != NULL) {
1707                                 /* this seems to be full screen */
1708                                 if (win->g.w > WIDTH(win->ws->r)) {
1709                                         /* kill border */
1710                                         win->g.x -= 1;
1711                                         win->g.w += 1;
1712                                 }
1713                                 if (win->g.h > HEIGHT(win->ws->r)) {
1714                                         /* kill border */
1715                                         win->g.y -= 1;
1716                                         win->g.h += 1;
1717                                 }
1718                         }
1719                         if ((ev->value_mask & (CWX|CWY)) &&
1720                             !(ev->value_mask & (CWWidth|CWHeight)))
1721                                 config_win(win);
1722                         XMoveResizeWindow(display, win->id,
1723                             win->g.x, win->g.y, win->g.w, win->g.h);
1724                 } else
1725                         config_win(win);
1726         }
1727 }
1728
1729 void
1730 configurenotify(XEvent *e)
1731 {
1732         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1733             e->xconfigure.window);
1734 }
1735
1736 void
1737 destroynotify(XEvent *e)
1738 {
1739         struct ws_win           *win;
1740         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1741         struct workspace        *ws;
1742
1743         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1744
1745         if ((win = find_window(ev->window)) != NULL) {
1746                 ws = win->ws;
1747                 /* find a window to focus */
1748                 if (ws->focus == win)
1749                         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1750                 if (ws->focus == NULL)
1751                         ws->focus = TAILQ_FIRST(&ws->winlist);
1752                 if (ws->focus == win)
1753                         ws->focus = NULL;
1754                 if (cur_focus == win)
1755                         focus_win(ws->focus);
1756
1757                 TAILQ_REMOVE(&ws->winlist, win, entry);
1758                 set_win_state(win, WithdrawnState);
1759                 free(win);
1760         }
1761         stack();
1762 }
1763
1764 void
1765 enternotify(XEvent *e)
1766 {
1767         XCrossingEvent          *ev = &e->xcrossing;
1768         struct ws_win           *win;
1769
1770         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1771
1772         if (ignore_enter) {
1773                 /* eat event(r) to prevent autofocus */
1774                 ignore_enter--;
1775                 return;
1776         }
1777
1778         if ((win = find_window(ev->window)) != NULL)
1779                 focus_win(win);
1780 }
1781
1782 void
1783 focusin(XEvent *e)
1784 {
1785         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
1786 }
1787
1788 void
1789 mappingnotify(XEvent *e)
1790 {
1791         XMappingEvent           *ev = &e->xmapping;
1792
1793         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1794
1795         XRefreshKeyboardMapping(ev);
1796         if (ev->request == MappingKeyboard)
1797                 grabkeys();
1798 }
1799
1800 void
1801 maprequest(XEvent *e)
1802 {
1803         XMapRequestEvent        *ev = &e->xmaprequest;
1804         XWindowAttributes       wa;
1805         struct swm_region       *r;
1806
1807         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1808             e->xmaprequest.window);
1809
1810         if (!XGetWindowAttributes(display, ev->window, &wa))
1811                 return;
1812         if (wa.override_redirect)
1813                 return;
1814         r = root_to_region(wa.root);
1815         manage_window(e->xmaprequest.window, r->ws);
1816         stack();
1817 }
1818
1819 void
1820 propertynotify(XEvent *e)
1821 {
1822         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
1823             e->xproperty.window);
1824 }
1825
1826 void
1827 unmapnotify(XEvent *e)
1828 {
1829         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
1830 }
1831
1832 void
1833 visibilitynotify(XEvent *e)
1834 {
1835         int                     i;
1836         struct swm_region       *r;
1837
1838         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
1839             e->xvisibility.window);
1840         if (e->xvisibility.state == VisibilityUnobscured)
1841                 for (i = 0; i < ScreenCount(display); i++)
1842                         TAILQ_FOREACH(r, &screens[i].rl, entry)
1843                                 if (e->xvisibility.window == r->bar_window)
1844                                         bar_update();
1845 }
1846
1847 void                    (*handler[LASTEvent])(XEvent *) = {
1848                                 [Expose] = expose,
1849                                 [KeyPress] = keypress,
1850                                 [ButtonPress] = buttonpress,
1851                                 [ConfigureRequest] = configurerequest,
1852                                 [ConfigureNotify] = configurenotify,
1853                                 [DestroyNotify] = destroynotify,
1854                                 [EnterNotify] = enternotify,
1855                                 [FocusIn] = focusin,
1856                                 [MappingNotify] = mappingnotify,
1857                                 [MapRequest] = maprequest,
1858                                 [PropertyNotify] = propertynotify,
1859                                 [UnmapNotify] = unmapnotify,
1860                                 [VisibilityNotify] = visibilitynotify,
1861 };
1862
1863 int
1864 xerror_start(Display *d, XErrorEvent *ee)
1865 {
1866         other_wm = 1;
1867         return (-1);
1868 }
1869
1870 int
1871 xerror(Display *d, XErrorEvent *ee)
1872 {
1873         /* fprintf(stderr, "error: %p %p\n", display, ee); */
1874         return (-1);
1875 }
1876
1877 int
1878 active_wm(void)
1879 {
1880         other_wm = 0;
1881         xerrorxlib = XSetErrorHandler(xerror_start);
1882
1883         /* this causes an error if some other window manager is running */
1884         XSelectInput(display, DefaultRootWindow(display),
1885             SubstructureRedirectMask);
1886         XSync(display, False);
1887         if (other_wm)
1888                 return (1);
1889
1890         XSetErrorHandler(xerror);
1891         XSync(display, False);
1892         return (0);
1893 }
1894
1895 long
1896 getstate(Window w)
1897 {
1898         int                     format, status;
1899         long                    result = -1;
1900         unsigned char           *p = NULL;
1901         unsigned long           n, extra;
1902         Atom                    real;
1903
1904         astate = XInternAtom(display, "WM_STATE", False);
1905         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
1906             &real, &format, &n, &extra, (unsigned char **)&p);
1907         if (status != Success)
1908                 return (-1);
1909         if (n != 0)
1910                 result = *p;
1911         XFree(p);
1912         return (result);
1913 }
1914
1915 void
1916 new_region(struct swm_screen *s, struct workspace *ws,
1917     int x, int y, int w, int h)
1918 {
1919         struct swm_region       *r;
1920
1921         DNPRINTF(SWM_D_MISC, "new region on screen %d: %dx%d (%d, %d)\n",
1922              s->idx, x, y, w, h);
1923
1924         if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
1925                 errx(1, "calloc: failed to allocate memory for screen");
1926
1927         X(r) = x;
1928         Y(r) = y;
1929         WIDTH(r) = w;
1930         HEIGHT(r) = h;
1931         r->s = s;
1932         r->ws = ws;
1933         ws->r = r;
1934         TAILQ_INSERT_TAIL(&s->rl, r, entry);
1935         bar_setup(r);
1936 }
1937
1938 void
1939 setup_screens(void)
1940 {
1941 #ifdef SWM_XRR_HAS_CRTC
1942         XRRCrtcInfo             *ci;
1943         XRRScreenResources      *sr;
1944         int                     c;
1945 #endif /* SWM_XRR_HAS_CRTC */
1946         Window                  d1, d2, *wins = NULL;
1947         XWindowAttributes       wa;
1948         struct swm_region       *r;
1949         unsigned int            no;
1950         int                     errorbase, major, minor;
1951         int                     ncrtc = 0, w = 0;
1952         int                     i, j, k;
1953         struct workspace        *ws;
1954
1955         if ((screens = calloc(ScreenCount(display),
1956              sizeof(struct swm_screen))) == NULL)
1957                 errx(1, "calloc: screens");
1958
1959         /* map physical screens */
1960         for (i = 0; i < ScreenCount(display); i++) {
1961                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
1962                 screens[i].idx = i;
1963                 TAILQ_INIT(&screens[i].rl);
1964                 screens[i].root = RootWindow(display, i);
1965
1966                 /* set default colors */
1967                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
1968                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
1969                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
1970                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
1971                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
1972
1973                 /* init all workspaces */
1974                 for (j = 0; j < SWM_WS_MAX; j++) {
1975                         ws = &screens[i].ws[j];
1976                         ws->idx = j;
1977                         ws->restack = 1;
1978                         ws->focus = NULL;
1979                         ws->r = NULL;
1980                         TAILQ_INIT(&ws->winlist);
1981
1982                         for (k = 0; layouts[k].l_stack != NULL; k++)
1983                                 if (layouts[k].l_config != NULL)
1984                                         layouts[k].l_config(ws,
1985                                             SWM_ARG_ID_STACKINIT);
1986                         ws->cur_layout = &layouts[0];
1987                 }
1988
1989                 /* map virtual screens onto physical screens */
1990                 screens[i].xrandr_support = XRRQueryExtension(display,
1991                     &xrandr_eventbase, &errorbase);
1992                 if (screens[i].xrandr_support)
1993                         if (XRRQueryVersion(display, &major, &minor) &&
1994                             major < 1)
1995                                 screens[i].xrandr_support = 0;
1996
1997 #if 0   /* not ready for dynamic screen changes */
1998                 if (screens[i].xrandr_support)
1999                         XRRSelectInput(display,
2000                             screens[r->s].root,
2001                             RRScreenChangeNotifyMask);
2002 #endif
2003
2004                 /* grab existing windows (before we build the bars)*/
2005                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2006                         continue;
2007
2008 #ifdef SWM_XRR_HAS_CRTC
2009                 sr = XRRGetScreenResources(display, screens[i].root);
2010                 if (sr == NULL)
2011                         new_region(&screens[i], &screens[i].ws[w],
2012                             0, 0, DisplayWidth(display, i),
2013                             DisplayHeight(display, i));
2014                 else
2015                         ncrtc = sr->ncrtc;
2016
2017                 for (c = 0; c < ncrtc; c++) {
2018                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2019                         if (ci->noutput == 0)
2020                                 continue;
2021
2022                         if (ci != NULL && ci->mode == None)
2023                                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2024                                     DisplayWidth(display, i),
2025                                     DisplayHeight(display, i));
2026                         else
2027                                 new_region(&screens[i], &screens[i].ws[w],
2028                                     ci->x, ci->y, ci->width, ci->height);
2029                         w++;
2030                 }
2031                 XRRFreeCrtcInfo(ci);
2032                 XRRFreeScreenResources(sr);
2033 #else
2034                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2035                     DisplayWidth(display, i),
2036                     DisplayHeight(display, i));
2037 #endif /* SWM_XRR_HAS_CRTC */
2038
2039                 /* attach windows to a region */
2040                 /* normal windows */
2041                 if ((r = TAILQ_FIRST(&screens[i].rl)) == NULL)
2042                         errx(1, "no regions on screen %d", i);
2043
2044                 for (i = 0; i < no; i++) {
2045                         XGetWindowAttributes(display, wins[i], &wa);
2046                         if (!XGetWindowAttributes(display, wins[i], &wa) ||
2047                             wa.override_redirect ||
2048                             XGetTransientForHint(display, wins[i], &d1))
2049                                 continue;
2050
2051                         if (wa.map_state == IsViewable ||
2052                             getstate(wins[i]) == NormalState)
2053                                 manage_window(wins[i], r->ws);
2054                 }
2055                 /* transient windows */
2056                 for (i = 0; i < no; i++) {
2057                         if (!XGetWindowAttributes(display, wins[i], &wa))
2058                                 continue;
2059
2060                         if (XGetTransientForHint(display, wins[i], &d1) &&
2061                             (wa.map_state == IsViewable || getstate(wins[i]) ==
2062                             NormalState))
2063                                 manage_window(wins[i], r->ws);
2064                 }
2065                 if (wins) {
2066                         XFree(wins);
2067                         wins = NULL;
2068                 }
2069         }
2070 }
2071
2072 int
2073 main(int argc, char *argv[])
2074 {
2075         struct passwd           *pwd;
2076         char                    conf[PATH_MAX], *cfile = NULL;
2077         struct stat             sb;
2078         XEvent                  e;
2079         int                     xfd;
2080         fd_set                  rd;
2081
2082         start_argv = argv;
2083         fprintf(stderr, "Welcome to scrotwm V%s\n", SWM_VERSION);
2084         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2085                 warnx("no locale support");
2086
2087         if (!(display = XOpenDisplay(0)))
2088                 errx(1, "can not open display");
2089
2090         if (active_wm())
2091                 errx(1, "other wm running");
2092
2093         astate = XInternAtom(display, "WM_STATE", False);
2094
2095         /* look for local and global conf file */
2096         pwd = getpwuid(getuid());
2097         if (pwd == NULL)
2098                 errx(1, "invalid user %d", getuid());
2099
2100         setup_screens();
2101
2102         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2103         if (stat(conf, &sb) != -1) {
2104                 if (S_ISREG(sb.st_mode))
2105                         cfile = conf;
2106         } else {
2107                 /* try global conf file */
2108                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2109                 if (!stat(conf, &sb))
2110                         if (S_ISREG(sb.st_mode))
2111                                 cfile = conf;
2112         }
2113         if (cfile)
2114                 conf_load(cfile);
2115         bar_refresh();
2116
2117         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2118
2119         grabkeys();
2120         stack();
2121
2122         xfd = ConnectionNumber(display);
2123         while (running) {
2124                 FD_ZERO(&rd);
2125                 FD_SET(xfd, &rd);
2126                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2127                         if (errno != EINTR)
2128                                 errx(1, "select failed");
2129                 if (bar_alarm) {
2130                         bar_alarm = 0;
2131                         bar_update();
2132                 }
2133                 while(XPending(display)) {
2134                         XNextEvent(display, &e);
2135                         if (handler[e.type])
2136                                 handler[e.type](&e);
2137                 }
2138         }
2139
2140         XCloseDisplay(display);
2141
2142         return (0);
2143 }