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