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_delay = 30;
 150 int                     bar_enabled = 1;
 151 int                     bar_extra = 1;
 152 int                     bar_extra_running = 0;
 153 int                     bar_verbose = 1;
 154 int                     bar_height = 0;
 155 pid_t                   bar_pid;
 156 GC                      bar_gc;
 157 XGCValues               bar_gcv;
 158 int                     bar_fidx = 0;
 159 XFontStruct             *bar_fs;
 160 char                    *bar_fonts[] = {
 161                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 162                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 163                             NULL
 164 };
 165
 166 /* terminal + args */
 167 char                    *spawn_term[] = { "xterm", NULL };
 168 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL,
 169                             "-nb", NULL, "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 170
 171 #define SWM_MENU_FN     (2)
 172 #define SWM_MENU_NB     (4)
 173 #define SWM_MENU_NF     (6)
 174 #define SWM_MENU_SB     (8)
 175 #define SWM_MENU_SF     (10)
 176
 177 /* layout manager data */
 178 struct swm_geometry {
 179         int                     x;
 180         int                     y;
 181         int                     w;
 182         int                     h;
 183 };
 184
 185 struct swm_screen;
 186 struct workspace;
 187
 188 /* virtual "screens" */
 189 struct swm_region {
 190         TAILQ_ENTRY(swm_region) entry;
 191         struct swm_geometry     g;
 192         Window                  bar_window;
 193         struct workspace        *ws;    /* current workspace on this region */
 194         struct swm_screen       *s;     /* screen idx */
 195 };
 196 TAILQ_HEAD(swm_region_list, swm_region);
 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 if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 416                                 bar_delay = atoi(val);
 417                         else
 418                                 goto bad;
 419                         break;
 420
 421                 case 'c':
 422                         if (!varmatch(var, "color_focus", &i))
 423                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 424                         else if (!varmatch(var, "color_unfocus", &i))
 425                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 426                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 427                                 cycle_visible = atoi(val);
 428                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 429                                 cycle_visible = atoi(val);
 430                         else
 431                                 goto bad;
 432                         break;
 433
 434                 case 'd':
 435                         if (!strncmp(var, "dialog_ratio",
 436                             strlen("dialog_ratio"))) {
 437                                 dialog_ratio = atof(val);
 438                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 439                                         dialog_ratio = .6;
 440                         } else
 441                                 goto bad;
 442                         break;
 443
 444                 case 's':
 445                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 446                                 asprintf(&spawn_term[0], "%s", val); /* XXX args? */
 447                         break;
 448                 default:
 449                         goto bad;
 450                 }
 451                 free(line);
 452         }
 453
 454         fclose(config);
 455         return (0);
 456
 457 bad:
 458         errx(1, "invalid conf file entry: %s=%s", var, val);
 459 }
 460
 461 void
 462 socket_setnonblock(int fd)
 463 {
 464         int                     flags;
 465
 466         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 467                 err(1, "fcntl F_GETFL");
 468         flags |= O_NONBLOCK;
 469         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 470                 err(1, "fcntl F_SETFL");
 471 }
 472
 473 void
 474 bar_print(struct swm_region *r, char *s)
 475 {
 476         XClearWindow(display, r->bar_window);
 477         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 478         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 479             strlen(s));
 480 }
 481
 482 void
 483 bar_extra_stop(void)
 484 {
 485         if (bar_pipe[0]) {
 486                 close(bar_pipe[0]);
 487                 bzero(bar_pipe, sizeof bar_pipe);
 488         }
 489         if (bar_pid) {
 490                 kill(bar_pid, SIGTERM);
 491                 bar_pid = 0;
 492         }
 493         strlcpy(bar_ext, "", sizeof bar_ext);
 494         bar_extra = 0;
 495 }
 496
 497 void
 498 bar_update(void)
 499 {
 500         time_t                  tmt;
 501         struct tm               tm;
 502         struct swm_region       *r;
 503         int                     i, x;
 504         size_t                  len;
 505         char                    s[SWM_BAR_MAX];
 506         char                    loc[SWM_BAR_MAX];
 507         char                    *b;
 508
 509         if (bar_enabled == 0)
 510                 return;
 511
 512         if (bar_extra && bar_extra_running) {
 513                 /* ignore short reads; it'll correct itself */
 514                 while ((b = fgetln(stdin, &len)) != NULL)
 515                         if (b && b[len - 1] == '\n') {
 516                                 b[len - 1] = '\0';
 517                                 strlcpy(bar_ext, b, sizeof bar_ext);
 518                         }
 519                 if (b == NULL && errno != EAGAIN) {
 520                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 521                             errno, strerror(errno));
 522                         bar_extra_stop();
 523                 }
 524         } else
 525                 strlcpy(bar_ext, "", sizeof bar_ext);
 526
 527         time(&tmt);
 528         localtime_r(&tmt, &tm);
 529         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 530         for (i = 0; i < ScreenCount(display); i++) {
 531                 x = 1;
 532                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 533                         snprintf(loc, sizeof loc, "%s     %d:%d    %s",
 534                             s, x++, r->ws->idx + 1, bar_ext);
 535                         bar_print(r, loc);
 536                 }
 537         }
 538         XSync(display, False);
 539         alarm(bar_delay);
 540 }
 541
 542 void
 543 bar_signal(int sig)
 544 {
 545         bar_alarm = 1;
 546 }
 547
 548 void
 549 bar_toggle(struct swm_region *r, union arg *args)
 550 {
 551         struct swm_region       *tmpr;
 552         int                     i, j, sc = ScreenCount(display);
 553
 554         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 555
 556         if (bar_enabled) {
 557                 for (i = 0; i < sc; i++)
 558                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 559                                 XUnmapWindow(display, tmpr->bar_window);
 560         } else {
 561                 for (i = 0; i < sc; i++)
 562                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 563                                 XMapRaised(display, tmpr->bar_window);
 564         }
 565         bar_enabled = !bar_enabled;
 566         XSync(display, False);
 567         for (i = 0; i < sc; i++)
 568                 for (j = 0; j < SWM_WS_MAX; j++)
 569                         screens[i].ws[j].restack = 1;
 570
 571         stack();
 572         /* must be after stack */
 573         for (i = 0; i < sc; i++)
 574                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 575                         bar_update();
 576 }
 577
 578 void
 579 bar_refresh(void)
 580 {
 581         XSetWindowAttributes    wa;
 582         struct swm_region       *r;
 583         int                     i;
 584
 585         /* do this here because the conf file is in memory */
 586         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 587                 /* launch external status app */
 588                 bar_extra_running = 1;
 589                 if (pipe(bar_pipe) == -1)
 590                         err(1, "pipe error");
 591                 socket_setnonblock(bar_pipe[0]);
 592                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 593                 if (dup2(bar_pipe[0], 0) == -1)
 594                         errx(1, "dup2");
 595                 if (dup2(bar_pipe[1], 1) == -1)
 596                         errx(1, "dup2");
 597                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 598                         err(1, "could not disable SIGPIPE");
 599                 switch (bar_pid = fork()) {
 600                 case -1:
 601                         err(1, "cannot fork");
 602                         break;
 603                 case 0: /* child */
 604                         close(bar_pipe[0]);
 605                         execvp(bar_argv[0], bar_argv);
 606                         err(1, "%s external app failed", bar_argv[0]);
 607                         break;
 608                 default: /* parent */
 609                         close(bar_pipe[1]);
 610                         break;
 611                 }
 612         }
 613
 614         bzero(&wa, sizeof wa);
 615         for (i = 0; i < ScreenCount(display); i++)
 616                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 617                         wa.border_pixel =
 618                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 619                         wa.background_pixel =
 620                             screens[i].c[SWM_S_COLOR_BAR].color;
 621                         XChangeWindowAttributes(display, r->bar_window,
 622                             CWBackPixel | CWBorderPixel, &wa);
 623                 }
 624         bar_update();
 625 }
 626
 627 void
 628 bar_setup(struct swm_region *r)
 629 {
 630         int                     i;
 631
 632         for (i = 0; bar_fonts[i] != NULL; i++) {
 633                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 634                 if (bar_fs) {
 635                         bar_fidx = i;
 636                         break;
 637                 }
 638         }
 639         if (bar_fonts[i] == NULL)
 640                         errx(1, "couldn't load font");
 641         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 642
 643         r->bar_window = XCreateSimpleWindow(display,
 644             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 645             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 646             r->s->c[SWM_S_COLOR_BAR].color);
 647         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 648         XSetFont(display, bar_gc, bar_fs->fid);
 649         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 650         if (bar_enabled)
 651                 XMapRaised(display, r->bar_window);
 652         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 653
 654         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 655                 err(1, "could not install bar_signal");
 656         bar_refresh();
 657 }
 658
 659 void
 660 config_win(struct ws_win *win)
 661 {
 662         XConfigureEvent         ce;
 663
 664         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 665             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 666         ce.type = ConfigureNotify;
 667         ce.display = display;
 668         ce.event = win->id;
 669         ce.window = win->id;
 670         ce.x = win->g.x;
 671         ce.y = win->g.y;
 672         ce.width = win->g.w;
 673         ce.height = win->g.h;
 674         ce.border_width = 1; /* XXX store this! */
 675         ce.above = None;
 676         ce.override_redirect = False;
 677         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 678 }
 679
 680 int
 681 count_win(struct workspace *ws, int count_transient)
 682 {
 683         struct ws_win           *win;
 684         int                     count = 0;
 685
 686         TAILQ_FOREACH(win, &ws->winlist, entry) {
 687                 if (count_transient == 0 && win->floating)
 688                         continue;
 689                 if (count_transient == 0 && win->transient)
 690                         continue;
 691                 count++;
 692         }
 693         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 694
 695         return (count);
 696 }
 697
 698 void
 699 quit(struct swm_region *r, union arg *args)
 700 {
 701         DNPRINTF(SWM_D_MISC, "quit\n");
 702         running = 0;
 703 }
 704
 705 void
 706 restart(struct swm_region *r, union arg *args)
 707 {
 708         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 709
 710         /* disable alarm because the following code may not be interrupted */
 711         alarm(0);
 712         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 713                 errx(1, "can't disable alarm");
 714
 715         bar_extra_stop();
 716         bar_extra = 1;
 717         XCloseDisplay(display);
 718         execvp(start_argv[0], start_argv);
 719         fprintf(stderr, "execvp failed\n");
 720         perror(" failed");
 721         quit(NULL, NULL);
 722 }
 723
 724 struct swm_region *
 725 root_to_region(Window root)
 726 {
 727         struct swm_region       *r;
 728         Window                  rr, cr;
 729         int                     i, x, y, wx, wy;
 730         unsigned int            mask;
 731
 732         for (i = 0; i < ScreenCount(display); i++)
 733                 if (screens[i].root == root)
 734                         break;
 735
 736         if (XQueryPointer(display, screens[i].root,
 737             &rr, &cr, &x, &y, &wx, &wy, &mask) == False) {
 738                 /* if we can't query the pointer, grab the first region */
 739                 r = TAILQ_FIRST(&screens[i].rl);
 740         } else {
 741                 /* otherwise, choose a region based on pointer location */
 742                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 743                         if (x > X(r) && x < X(r) + WIDTH(r) &&
 744                             y > Y(r) && y < Y(r) + HEIGHT(r))
 745                                 break;
 746                 }
 747
 748                 if (r == NULL)
 749                         r = TAILQ_FIRST(&screens[i].rl);
 750         }
 751         return (r);
 752 }
 753
 754 struct ws_win *
 755 find_window(Window id)
 756 {
 757         struct ws_win           *win;
 758         int                     i, j;
 759
 760         for (i = 0; i < ScreenCount(display); i++)
 761                 for (j = 0; j < SWM_WS_MAX; j++)
 762                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 763                                 if (id == win->id)
 764                                         return (win);
 765         return (NULL);
 766 }
 767
 768 void
 769 spawn(struct swm_region *r, union arg *args)
 770 {
 771         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 772         /*
 773          * The double-fork construct avoids zombie processes and keeps the code
 774          * clean from stupid signal handlers.
 775          */
 776         if (fork() == 0) {
 777                 if (fork() == 0) {
 778                         if (display)
 779                                 close(ConnectionNumber(display));
 780                         setsid();
 781                         execvp(args->argv[0], args->argv);
 782                         fprintf(stderr, "execvp failed\n");
 783                         perror(" failed");
 784                 }
 785                 exit(0);
 786         }
 787         wait(0);
 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 void
1111 vertical_config(struct workspace *ws, int id)
1112 {
1113         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1114
1115         switch (id) {
1116         case SWM_ARG_ID_STACKRESET:
1117         case SWM_ARG_ID_STACKINIT:
1118                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1119                 ws->l_state.vertical_mwin = 1;
1120                 break;
1121         case SWM_ARG_ID_MASTERSHRINK:
1122                 if (ws->l_state.vertical_msize > 1)
1123                         ws->l_state.vertical_msize--;
1124                 break;
1125         case SWM_ARG_ID_MASTERGROW:
1126                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1127                         ws->l_state.vertical_msize++;
1128                 break;
1129         case SWM_ARG_ID_MASTERADD:
1130                 ws->l_state.vertical_mwin++;
1131                 break;
1132         case SWM_ARG_ID_MASTERDEL:
1133                 if (ws->l_state.vertical_mwin > 0)
1134                         ws->l_state.vertical_mwin--;
1135                 break;
1136         default:
1137                 return;
1138         }
1139 }
1140
1141 void
1142 vertical_stack(struct workspace *ws, struct swm_geometry *g) {
1143         XWindowChanges          wc;
1144         struct swm_geometry     gg = *g;
1145         struct ws_win           *win, *winfocus;
1146         int                     i, j, split, colno, hrh, winno, main_width;
1147         unsigned int            mask;
1148
1149         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1150
1151         if ((winno = count_win(ws, 0)) == 0)
1152                 return;
1153
1154         if (ws->focus == NULL)
1155                 ws->focus = TAILQ_FIRST(&ws->winlist);
1156         winfocus = cur_focus ? cur_focus : ws->focus;
1157
1158         if (ws->l_state.vertical_mwin &&
1159             winno > ws->l_state.vertical_mwin) {
1160                 split = ws->l_state.vertical_mwin;
1161                 colno = split;
1162                 main_width = (g->w / SWM_V_SLICE) *
1163                    ws->l_state.vertical_msize;
1164                 gg.w = main_width;
1165         } else {
1166                 colno = winno;
1167                 split = 0;
1168         }
1169         hrh = g->h / colno;
1170         gg.h = hrh - 2;
1171
1172         i = j = 0;
1173         TAILQ_FOREACH(win, &ws->winlist, entry) {
1174                 if (split && i == split) {
1175                         colno = winno - split;
1176                         hrh = (g->h / colno);
1177                         gg.x += main_width + 2;
1178                         gg.w = g->w - (main_width + 2);
1179                         gg.h = hrh - 2;
1180                         j = 0;
1181                 }
1182                 if (j == colno - 1)
1183                         gg.h = (hrh + (g->h - (colno * hrh)));
1184
1185                 if (j == 0)
1186                         gg.y = g->y;
1187                 else
1188                         gg.y += hrh;
1189
1190
1191                 if (win->transient != 0 || win->floating != 0)
1192                         stack_floater(win, ws->r);
1193                 else {
1194                         bzero(&wc, sizeof wc);
1195                         wc.border_width = 1;
1196                         win->g.x = wc.x = gg.x;
1197                         win->g.y = wc.y = gg.y;
1198                         win->g.w = wc.width = gg.w;
1199                         win->g.h = wc.height = gg.h;
1200                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1201                         XConfigureWindow(display, win->id, mask, &wc);
1202                         /*
1203                         fprintf(stderr, "vertical_stack: win %d x %d y %d w %d h %d bw %d\n", win->id, win->g.x, win->g.y, win->g.w , win->g.h, wc.border_width);
1204                         */
1205                 }
1206
1207                 XMapRaised(display, win->id);
1208                 i++;
1209                 j++;
1210         }
1211
1212         if (winfocus)
1213                 focus_win(winfocus); /* has to be done outside of the loop */
1214 }
1215
1216 void
1217 horizontal_config(struct workspace *ws, int id)
1218 {
1219         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1220
1221         switch (id) {
1222         case SWM_ARG_ID_STACKRESET:
1223         case SWM_ARG_ID_STACKINIT:
1224                 ws->l_state.horizontal_mwin = 1;
1225                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1226                 break;
1227         case SWM_ARG_ID_MASTERSHRINK:
1228                 if (ws->l_state.horizontal_msize > 1)
1229                         ws->l_state.horizontal_msize--;
1230                 break;
1231         case SWM_ARG_ID_MASTERGROW:
1232                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1233                         ws->l_state.horizontal_msize++;
1234                 break;
1235         case SWM_ARG_ID_MASTERADD:
1236                 ws->l_state.horizontal_mwin++;
1237                 break;
1238         case SWM_ARG_ID_MASTERDEL:
1239                 if (ws->l_state.horizontal_mwin > 0)
1240                         ws->l_state.horizontal_mwin--;
1241                 break;
1242         default:
1243                 return;
1244         }
1245 }
1246
1247 void
1248 horizontal_stack(struct workspace *ws, struct swm_geometry *g) {
1249         XWindowChanges          wc;
1250         struct swm_geometry     gg = *g;
1251         struct ws_win           *win, *winfocus;
1252         int                     i, j, split, rowno, hrw, winno, main_height;
1253         unsigned int            mask;
1254
1255         DNPRINTF(SWM_D_STACK, "horizontal_stack: workspace: %d\n", ws->idx);
1256
1257         if ((winno = count_win(ws, 0)) == 0)
1258                 return;
1259
1260         if (ws->focus == NULL)
1261                 ws->focus = TAILQ_FIRST(&ws->winlist);
1262         winfocus = cur_focus ? cur_focus : ws->focus;
1263
1264         if (ws->l_state.horizontal_mwin &&
1265             winno > ws->l_state.horizontal_mwin) {
1266                 split = ws->l_state.horizontal_mwin;
1267                 rowno = split;
1268                 main_height = (g->h / SWM_V_SLICE) *
1269                    ws->l_state.horizontal_msize;
1270                 gg.h = main_height;
1271         } else {
1272                 rowno = winno;
1273                 split = 0;
1274         }
1275         hrw = g->w / rowno;
1276         gg.w = hrw - 2;
1277
1278         i = j = 0;
1279         TAILQ_FOREACH(win, &ws->winlist, entry) {
1280                 if (split && i == split) {
1281                         rowno = winno - split;
1282                         hrw = (g->w / rowno);
1283                         gg.y += main_height + 2;
1284                         gg.h = g->h - (main_height + 2);
1285                         gg.w = hrw - 2;
1286                         j = 0;
1287                 }
1288                 if (j == rowno - 1)
1289                         gg.w = (hrw + (g->w - (rowno * hrw)));
1290
1291                 if (j == 0)
1292                         gg.x = g->x;
1293                 else
1294                         gg.x += hrw;
1295
1296                 if (win->transient != 0 || win->floating != 0)
1297                         stack_floater(win, ws->r);
1298                 else {
1299                         bzero(&wc, sizeof wc);
1300                         wc.border_width = 1;
1301                         win->g.x = wc.x = gg.x;
1302                         win->g.y = wc.y = gg.y;
1303                         win->g.w = wc.width = gg.w;
1304                         win->g.h = wc.height = gg.h;
1305                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1306                         XConfigureWindow(display, win->id, mask, &wc);
1307                 }
1308
1309                 XMapRaised(display, win->id);
1310                 j++;
1311                 i++;
1312         }
1313
1314         if (winfocus)
1315                 focus_win(winfocus); /* this has to be done outside of the loop */
1316 }
1317
1318 /* fullscreen view */
1319 void
1320 max_stack(struct workspace *ws, struct swm_geometry *g) {
1321         XWindowChanges          wc;
1322         struct swm_geometry     gg = *g;
1323         struct ws_win           *win, *winfocus;
1324         unsigned int            mask;
1325
1326         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1327
1328         if (count_win(ws, 0) == 0)
1329                 return;
1330
1331         if (ws->focus == NULL)
1332                 ws->focus = TAILQ_FIRST(&ws->winlist);
1333         winfocus = cur_focus ? cur_focus : ws->focus;
1334
1335         TAILQ_FOREACH(win, &ws->winlist, entry) {
1336                 if (win->transient != 0 || win->floating != 0) {
1337                         if (win == ws->focus) {
1338                                 /* XXX maximize? */
1339                                 stack_floater(win, ws->r);
1340                                 XMapRaised(display, win->id);
1341                         } else
1342                                 XUnmapWindow(display, win->id);
1343                 } else {
1344                         bzero(&wc, sizeof wc);
1345                         wc.border_width = 1;
1346                         win->g.x = wc.x = gg.x;
1347                         win->g.y = wc.y = gg.y;
1348                         win->g.w = wc.width = gg.w;
1349                         win->g.h = wc.height = gg.h;
1350                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1351                         XConfigureWindow(display, win->id, mask, &wc);
1352
1353                         if (win == ws->focus) {
1354                                 XMapRaised(display, win->id);
1355                         } else
1356                                 XUnmapWindow(display, win->id);
1357                 }
1358         }
1359
1360         if (winfocus)
1361                 focus_win(winfocus); /* has to be done outside of the loop */
1362 }
1363
1364 void
1365 send_to_ws(struct swm_region *r, union arg *args)
1366 {
1367         int                     wsid = args->id;
1368         struct ws_win           *win = cur_focus;
1369         struct workspace        *ws, *nws;
1370         Atom                    ws_idx_atom = 0;
1371         unsigned char           ws_idx_str[1];
1372
1373         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1374
1375         ws = win->ws;
1376         nws = &win->s->ws[wsid];
1377
1378         XUnmapWindow(display, win->id);
1379
1380         /* find a window to focus */
1381         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1382         if (ws->focus == NULL)
1383                 ws->focus = TAILQ_FIRST(&ws->winlist);
1384         if (ws->focus == win)
1385                 ws->focus = NULL;
1386
1387         TAILQ_REMOVE(&ws->winlist, win, entry);
1388
1389         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1390         win->ws = nws;
1391
1392         /* Try to update the window's workspace property */
1393         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1394         ws_idx_str[0] = (unsigned char)nws->idx;
1395         XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1396             PropModeReplace, ws_idx_str, 1);
1397
1398         if (count_win(nws, 1) == 1)
1399                 nws->focus = win;
1400         ws->restack = 1;
1401         nws->restack = 1;
1402
1403         stack();
1404 }
1405
1406 void
1407 wkill(struct swm_region *r, union arg *args)
1408 {
1409         DNPRINTF(SWM_D_MISC, "wkill\n");
1410         if(r->ws->focus != NULL)
1411                 XKillClient(display, r->ws->focus->id);
1412 }
1413
1414 /* key definitions */
1415 struct key {
1416         unsigned int            mod;
1417         KeySym                  keysym;
1418         void                    (*func)(struct swm_region *r, union arg *);
1419         union arg               args;
1420 } keys[] = {
1421         /* modifier             key     function                argument */
1422         { MODKEY,               XK_space,       cycle_layout,   {0} },
1423         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1424         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1425         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1426         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1427         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1428         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1429         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1430         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1431         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1432         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1433         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1434         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1435         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1436         { MODKEY,               XK_q,           restart,        {0} },
1437         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1438         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1439         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1440         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1441         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1442         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1443         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1444         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1445         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1446         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1447         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1448         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1449         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1450         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1451         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1452         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1453         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1454         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1455         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1456         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1457         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1458         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1459         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1460         { MODKEY,               XK_b,           bar_toggle,     {0} },
1461         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1462         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1463         { MODKEY | ShiftMask,   XK_x,           wkill,          {0} },
1464 };
1465
1466 void
1467 click(struct swm_region *r, union arg *args)
1468 {
1469         DNPRINTF(SWM_D_MOUSE, "click: button: %d\n", args->id);
1470
1471         switch (args->id) {
1472         case Button1:
1473                 break;
1474         case Button2:
1475                 break;
1476         case Button3:
1477                 break;
1478         default:
1479                 return;
1480         }
1481 }
1482
1483 /* mouse */
1484 enum { client_click, root_click };
1485 struct button {
1486         unsigned int            action;
1487         unsigned int            mask;
1488         unsigned int            button;
1489         void                    (*func)(struct swm_region *r, union arg *);
1490         union arg               args;
1491 } buttons[] = {
1492           /* action             key             mouse button    func            args */
1493         { client_click,         MODKEY,         Button1,        click, {.id=Button1} },
1494 };
1495
1496 void
1497 updatenumlockmask(void)
1498 {
1499         unsigned int            i, j;
1500         XModifierKeymap         *modmap;
1501
1502         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1503         numlockmask = 0;
1504         modmap = XGetModifierMapping(display);
1505         for (i = 0; i < 8; i++)
1506                 for (j = 0; j < modmap->max_keypermod; j++)
1507                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1508                           == XKeysymToKeycode(display, XK_Num_Lock))
1509                                 numlockmask = (1 << i);
1510
1511         XFreeModifiermap(modmap);
1512 }
1513
1514 void
1515 grabkeys(void)
1516 {
1517         unsigned int            i, j, k;
1518         KeyCode                 code;
1519         unsigned int            modifiers[] =
1520             { 0, LockMask, numlockmask, numlockmask | LockMask };
1521
1522         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1523         updatenumlockmask();
1524
1525         for (k = 0; k < ScreenCount(display); k++) {
1526                 if (TAILQ_EMPTY(&screens[k].rl))
1527                         continue;
1528                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1529                 for (i = 0; i < LENGTH(keys); i++) {
1530                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1531                                 for (j = 0; j < LENGTH(modifiers); j++)
1532                                         XGrabKey(display, code,
1533                                             keys[i].mod | modifiers[j],
1534                                             screens[k].root, True,
1535                                             GrabModeAsync, GrabModeAsync);
1536                 }
1537         }
1538 }
1539
1540 void
1541 grabbuttons(struct ws_win *win, int focused)
1542 {
1543         unsigned int            i, j;
1544         unsigned int            modifiers[] =
1545             { 0, LockMask, numlockmask, numlockmask|LockMask };
1546
1547         updatenumlockmask();
1548         XUngrabButton(display, AnyButton, AnyModifier, win->id);
1549         if(focused) {
1550                 for (i = 0; i < LENGTH(buttons); i++)
1551                         if (buttons[i].action == client_click)
1552                                 for (j = 0; j < LENGTH(modifiers); j++)
1553                                         XGrabButton(display, buttons[i].button,
1554                                             buttons[i].mask | modifiers[j],
1555                                             win->id, False, BUTTONMASK,
1556                                             GrabModeAsync, GrabModeSync, None,
1557                                             None);
1558         } else
1559                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
1560                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
1561 }
1562
1563 void
1564 expose(XEvent *e)
1565 {
1566         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1567 }
1568
1569 void
1570 keypress(XEvent *e)
1571 {
1572         unsigned int            i;
1573         KeySym                  keysym;
1574         XKeyEvent               *ev = &e->xkey;
1575
1576         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1577
1578         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1579         for (i = 0; i < LENGTH(keys); i++)
1580                 if (keysym == keys[i].keysym
1581                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1582                    && keys[i].func)
1583                         keys[i].func(root_to_region(ev->root),
1584                             &(keys[i].args));
1585 }
1586
1587 void
1588 buttonpress(XEvent *e)
1589 {
1590         XButtonPressedEvent     *ev = &e->xbutton;
1591
1592         struct ws_win           *win;
1593         int                     i, action;
1594
1595         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
1596
1597         action = root_click;
1598         if ((win = find_window(ev->window)) == NULL)
1599                 return;
1600         else {
1601                 focus_win(win);
1602                 action = client_click;
1603         }
1604
1605         for (i = 0; i < LENGTH(buttons); i++)
1606                 if (action == buttons[i].action && buttons[i].func &&
1607                     buttons[i].button == ev->button &&
1608                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
1609                         buttons[i].func(root_to_region(ev->root),
1610                         &buttons[i].args);
1611 }
1612
1613 void
1614 set_win_state(struct ws_win *win, long state)
1615 {
1616         long                    data[] = {state, None};
1617
1618         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
1619
1620         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
1621             (unsigned char *)data, 2);
1622 }
1623
1624 struct ws_win *
1625 manage_window(Window id)
1626 {
1627         Window                  trans;
1628         struct workspace        *ws;
1629         struct ws_win           *win;
1630         XClassHint              ch;
1631         int                     format;
1632         unsigned long           nitems, bytes;
1633         Atom                    ws_idx_atom = 0, type;
1634         unsigned char           ws_idx_str[1], *prop = NULL;
1635         struct swm_region       *r;
1636
1637         if ((win = find_window(id)) != NULL)
1638                         return (win);   /* already being managed */
1639
1640         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1641                 errx(1, "calloc: failed to allocate memory for new window");
1642
1643         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1644         if (ws_idx_atom)
1645                 XGetWindowProperty(display, id, ws_idx_atom, 0, 1, False, XA_STRING,
1646                     &type, &format, &nitems, &bytes, &prop);
1647
1648         XGetWindowAttributes(display, id, &win->wa);
1649         r = root_to_region(win->wa.root);
1650         /* If the window was managed before, put it in the same workspace */
1651         if (prop)
1652                 ws = &r->s->ws[prop[0]];
1653         else
1654                 ws = r->ws;
1655
1656         win->id = id;
1657         win->ws = ws;
1658         win->s = r->s;  /* this never changes */
1659         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
1660
1661         /* make new win focused */
1662         focus_win(win);
1663
1664         XGetTransientForHint(display, win->id, &trans);
1665         if (trans) {
1666                 win->transient = trans;
1667                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
1668                     (unsigned)win->id, win->transient);
1669         }
1670         win->g.w = win->wa.width;
1671         win->g.h = win->wa.height;
1672         win->g.x = win->wa.x;
1673         win->g.y = win->wa.y;
1674
1675         if (ws_idx_atom && prop == NULL) {
1676                 /* set the window's workspace property if it wasn't there */
1677                 ws_idx_str[0] = (unsigned char)ws->idx;
1678                 XChangeProperty(display, id, ws_idx_atom, XA_STRING, 1,
1679                     PropModeReplace, ws_idx_str, 1);
1680         }
1681
1682         /*
1683         fprintf(stderr, "manage window: %d x %d y %d w %d h %d\n", win->id, win->g.x, win->g.y, win->g.w, win->g.h);
1684         */
1685
1686         /* XXX make this a table */
1687         bzero(&ch, sizeof ch);
1688         if (XGetClassHint(display, win->id, &ch)) {
1689                 /*fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name); */
1690                 if (!strcmp(ch.res_class, "MPlayer") && !strcmp(ch.res_name, "xv")) {
1691                         win->floating = 1;
1692                 }
1693                 if (ch.res_class)
1694                         XFree(ch.res_class);
1695                 if (ch.res_name)
1696                         XFree(ch.res_name);
1697         }
1698
1699         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
1700             PropertyChangeMask | StructureNotifyMask);
1701
1702         set_win_state(win, NormalState);
1703
1704         return (win);
1705 }
1706
1707 void
1708 configurerequest(XEvent *e)
1709 {
1710         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1711         struct ws_win           *win;
1712         int                     new = 0;
1713         XWindowChanges          wc;
1714
1715         if ((win = find_window(ev->window)) == NULL)
1716                 new = 1;
1717
1718         if (new) {
1719                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
1720                     ev->window);
1721                 /*
1722                 fprintf(stderr, "configurerequest: new window: %lu x %d y %d w %d h %d bw %d s %d sm %d\n",
1723                     ev->window, ev->x, ev->y, ev->width, ev->height, ev->border_width, ev->above, ev->detail);
1724                 */
1725                 bzero(&wc, sizeof wc);
1726                 wc.x = ev->x;
1727                 wc.y = ev->y;
1728                 wc.width = ev->width;
1729                 wc.height = ev->height;
1730                 wc.border_width = ev->border_width;
1731                 wc.sibling = ev->above;
1732                 wc.stack_mode = ev->detail;
1733                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
1734         } else {
1735                 /*
1736                 fprintf(stderr, "configurerequest: change window: %lu\n",
1737                     ev->window);
1738                 */
1739                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
1740                     ev->window);
1741                 if (win->floating) {
1742                         if (ev->value_mask & CWX)
1743                                 win->g.x = ev->x;
1744                         if (ev->value_mask & CWY)
1745                                 win->g.y = ev->y;
1746                         if (ev->value_mask & CWWidth)
1747                                 win->g.w = ev->width;
1748                         if (ev->value_mask & CWHeight)
1749                                 win->g.h = ev->height;
1750                         if (win->ws->r != NULL) {
1751                                 /* this seems to be full screen */
1752                                 if (win->g.w > WIDTH(win->ws->r)) {
1753                                         /* kill border */
1754                                         win->g.x -= 1;
1755                                         win->g.w += 1;
1756                                 }
1757                                 if (win->g.h > HEIGHT(win->ws->r)) {
1758                                         /* kill border */
1759                                         win->g.y -= 1;
1760                                         win->g.h += 1;
1761                                 }
1762                         }
1763                         if ((ev->value_mask & (CWX|CWY)) &&
1764                             !(ev->value_mask & (CWWidth|CWHeight)))
1765                                 config_win(win);
1766                         XMoveResizeWindow(display, win->id,
1767                             win->g.x, win->g.y, win->g.w, win->g.h);
1768                 } else
1769                         config_win(win);
1770         }
1771 }
1772
1773 void
1774 configurenotify(XEvent *e)
1775 {
1776         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1777             e->xconfigure.window);
1778 }
1779
1780 void
1781 destroynotify(XEvent *e)
1782 {
1783         struct ws_win           *win;
1784         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1785         struct workspace        *ws;
1786
1787         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1788
1789         if ((win = find_window(ev->window)) != NULL) {
1790                 ws = win->ws;
1791                 /* find a window to focus */
1792                 if (ws->focus == win)
1793                         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1794                 if (ws->focus == NULL)
1795                         ws->focus = TAILQ_FIRST(&ws->winlist);
1796                 if (ws->focus == win)
1797                         ws->focus = NULL;
1798                 if (cur_focus == win)
1799                         focus_win(ws->focus);
1800
1801                 TAILQ_REMOVE(&ws->winlist, win, entry);
1802                 set_win_state(win, WithdrawnState);
1803                 free(win);
1804         }
1805         stack();
1806 }
1807
1808 void
1809 enternotify(XEvent *e)
1810 {
1811         XCrossingEvent          *ev = &e->xcrossing;
1812         struct ws_win           *win;
1813
1814         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1815
1816         if (ignore_enter) {
1817                 /* eat event(r) to prevent autofocus */
1818                 ignore_enter--;
1819                 return;
1820         }
1821
1822         if ((win = find_window(ev->window)) != NULL)
1823                 focus_win(win);
1824 }
1825
1826 void
1827 focusin(XEvent *e)
1828 {
1829         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
1830 }
1831
1832 void
1833 mappingnotify(XEvent *e)
1834 {
1835         XMappingEvent           *ev = &e->xmapping;
1836
1837         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1838
1839         XRefreshKeyboardMapping(ev);
1840         if (ev->request == MappingKeyboard)
1841                 grabkeys();
1842 }
1843
1844 void
1845 maprequest(XEvent *e)
1846 {
1847         XMapRequestEvent        *ev = &e->xmaprequest;
1848         XWindowAttributes       wa;
1849
1850         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1851             e->xmaprequest.window);
1852
1853         if (!XGetWindowAttributes(display, ev->window, &wa))
1854                 return;
1855         if (wa.override_redirect)
1856                 return;
1857         manage_window(e->xmaprequest.window);
1858         stack();
1859 }
1860
1861 void
1862 propertynotify(XEvent *e)
1863 {
1864         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
1865             e->xproperty.window);
1866 }
1867
1868 void
1869 unmapnotify(XEvent *e)
1870 {
1871         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
1872 }
1873
1874 void
1875 visibilitynotify(XEvent *e)
1876 {
1877         int                     i;
1878         struct swm_region       *r;
1879
1880         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
1881             e->xvisibility.window);
1882         if (e->xvisibility.state == VisibilityUnobscured)
1883                 for (i = 0; i < ScreenCount(display); i++)
1884                         TAILQ_FOREACH(r, &screens[i].rl, entry)
1885                                 if (e->xvisibility.window == r->bar_window)
1886                                         bar_update();
1887 }
1888
1889 void                    (*handler[LASTEvent])(XEvent *) = {
1890                                 [Expose] = expose,
1891                                 [KeyPress] = keypress,
1892                                 [ButtonPress] = buttonpress,
1893                                 [ConfigureRequest] = configurerequest,
1894                                 [ConfigureNotify] = configurenotify,
1895                                 [DestroyNotify] = destroynotify,
1896                                 [EnterNotify] = enternotify,
1897                                 [FocusIn] = focusin,
1898                                 [MappingNotify] = mappingnotify,
1899                                 [MapRequest] = maprequest,
1900                                 [PropertyNotify] = propertynotify,
1901                                 [UnmapNotify] = unmapnotify,
1902                                 [VisibilityNotify] = visibilitynotify,
1903 };
1904
1905 int
1906 xerror_start(Display *d, XErrorEvent *ee)
1907 {
1908         other_wm = 1;
1909         return (-1);
1910 }
1911
1912 int
1913 xerror(Display *d, XErrorEvent *ee)
1914 {
1915         /* fprintf(stderr, "error: %p %p\n", display, ee); */
1916         return (-1);
1917 }
1918
1919 int
1920 active_wm(void)
1921 {
1922         other_wm = 0;
1923         xerrorxlib = XSetErrorHandler(xerror_start);
1924
1925         /* this causes an error if some other window manager is running */
1926         XSelectInput(display, DefaultRootWindow(display),
1927             SubstructureRedirectMask);
1928         XSync(display, False);
1929         if (other_wm)
1930                 return (1);
1931
1932         XSetErrorHandler(xerror);
1933         XSync(display, False);
1934         return (0);
1935 }
1936
1937 long
1938 getstate(Window w)
1939 {
1940         int                     format, status;
1941         long                    result = -1;
1942         unsigned char           *p = NULL;
1943         unsigned long           n, extra;
1944         Atom                    real;
1945
1946         astate = XInternAtom(display, "WM_STATE", False);
1947         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
1948             &real, &format, &n, &extra, (unsigned char **)&p);
1949         if (status != Success)
1950                 return (-1);
1951         if (n != 0)
1952                 result = *p;
1953         XFree(p);
1954         return (result);
1955 }
1956
1957 void
1958 new_region(struct swm_screen *s, struct workspace *ws,
1959     int x, int y, int w, int h)
1960 {
1961         struct swm_region       *r;
1962
1963         DNPRINTF(SWM_D_MISC, "new region on screen %d: %dx%d (%d, %d)\n",
1964              s->idx, x, y, w, h);
1965
1966         if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
1967                 errx(1, "calloc: failed to allocate memory for screen");
1968
1969         X(r) = x;
1970         Y(r) = y;
1971         WIDTH(r) = w;
1972         HEIGHT(r) = h;
1973         r->s = s;
1974         r->ws = ws;
1975         ws->r = r;
1976         TAILQ_INSERT_TAIL(&s->rl, r, entry);
1977         bar_setup(r);
1978 }
1979
1980 void
1981 setup_screens(void)
1982 {
1983 #ifdef SWM_XRR_HAS_CRTC
1984         XRRCrtcInfo             *ci;
1985         XRRScreenResources      *sr;
1986         int                     c;
1987 #endif /* SWM_XRR_HAS_CRTC */
1988         Window                  d1, d2, *wins = NULL;
1989         XWindowAttributes       wa;
1990         struct swm_region       *r;
1991         unsigned int            no;
1992         int                     errorbase, major, minor;
1993         int                     ncrtc = 0, w = 0;
1994         int                     i, j, k;
1995         struct workspace        *ws;
1996         int                     ws_idx_atom;
1997
1998
1999         if ((screens = calloc(ScreenCount(display),
2000              sizeof(struct swm_screen))) == NULL)
2001                 errx(1, "calloc: screens");
2002
2003         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2004
2005
2006         /* map physical screens */
2007         for (i = 0; i < ScreenCount(display); i++) {
2008                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2009                 screens[i].idx = i;
2010                 TAILQ_INIT(&screens[i].rl);
2011                 screens[i].root = RootWindow(display, i);
2012
2013                 /* set default colors */
2014                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2015                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2016                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2017                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2018                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2019
2020                 /* init all workspaces */
2021                 for (j = 0; j < SWM_WS_MAX; j++) {
2022                         ws = &screens[i].ws[j];
2023                         ws->idx = j;
2024                         ws->restack = 1;
2025                         ws->focus = NULL;
2026                         ws->r = NULL;
2027                         TAILQ_INIT(&ws->winlist);
2028
2029                         for (k = 0; layouts[k].l_stack != NULL; k++)
2030                                 if (layouts[k].l_config != NULL)
2031                                         layouts[k].l_config(ws,
2032                                             SWM_ARG_ID_STACKINIT);
2033                         ws->cur_layout = &layouts[0];
2034                 }
2035
2036                 /* map virtual screens onto physical screens */
2037                 screens[i].xrandr_support = XRRQueryExtension(display,
2038                     &xrandr_eventbase, &errorbase);
2039                 if (screens[i].xrandr_support)
2040                         if (XRRQueryVersion(display, &major, &minor) &&
2041                             major < 1)
2042                                 screens[i].xrandr_support = 0;
2043
2044 #if 0   /* not ready for dynamic screen changes */
2045                 if (screens[i].xrandr_support)
2046                         XRRSelectInput(display,
2047                             screens[r->s].root,
2048                             RRScreenChangeNotifyMask);
2049 #endif
2050
2051                 /* grab existing windows (before we build the bars)*/
2052                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2053                         continue;
2054
2055 #ifdef SWM_XRR_HAS_CRTC
2056                 sr = XRRGetScreenResources(display, screens[i].root);
2057                 if (sr == NULL)
2058                         new_region(&screens[i], &screens[i].ws[w],
2059                             0, 0, DisplayWidth(display, i),
2060                             DisplayHeight(display, i));
2061                 else
2062                         ncrtc = sr->ncrtc;
2063
2064                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2065                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2066                         if (ci->noutput == 0)
2067                                 continue;
2068
2069                         if (ci != NULL && ci->mode == None)
2070                                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2071                                     DisplayWidth(display, i),
2072                                     DisplayHeight(display, i));
2073                         else
2074                                 new_region(&screens[i], &screens[i].ws[w],
2075                                     ci->x, ci->y, ci->width, ci->height);
2076                         w++;
2077                 }
2078                 if (ci)
2079                         XRRFreeCrtcInfo(ci);
2080                 XRRFreeScreenResources(sr);
2081 #else
2082                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2083                     DisplayWidth(display, i),
2084                     DisplayHeight(display, i));
2085 #endif /* SWM_XRR_HAS_CRTC */
2086
2087                 /* attach windows to a region */
2088                 /* normal windows */
2089                 if ((r = TAILQ_FIRST(&screens[i].rl)) == NULL)
2090                         errx(1, "no regions on screen %d", i);
2091
2092                 for (i = 0; i < no; i++) {
2093                         XGetWindowAttributes(display, wins[i], &wa);
2094                         if (!XGetWindowAttributes(display, wins[i], &wa) ||
2095                             wa.override_redirect ||
2096                             XGetTransientForHint(display, wins[i], &d1))
2097                                 continue;
2098
2099                         if (wa.map_state == IsViewable ||
2100                             getstate(wins[i]) == NormalState)
2101                                 manage_window(wins[i]);
2102                 }
2103                 /* transient windows */
2104                 for (i = 0; i < no; i++) {
2105                         if (!XGetWindowAttributes(display, wins[i], &wa))
2106                                 continue;
2107
2108                         if (XGetTransientForHint(display, wins[i], &d1) &&
2109                             (wa.map_state == IsViewable || getstate(wins[i]) ==
2110                             NormalState))
2111                                 manage_window(wins[i]);
2112                 }
2113                 if (wins) {
2114                         XFree(wins);
2115                         wins = NULL;
2116                 }
2117         }
2118 }
2119
2120 int
2121 main(int argc, char *argv[])
2122 {
2123         struct passwd           *pwd;
2124         char                    conf[PATH_MAX], *cfile = NULL;
2125         struct stat             sb;
2126         XEvent                  e;
2127         int                     xfd;
2128         fd_set                  rd;
2129
2130         start_argv = argv;
2131         fprintf(stderr, "Welcome to scrotwm V%s\n", SWM_VERSION);
2132         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2133                 warnx("no locale support");
2134
2135         if (!(display = XOpenDisplay(0)))
2136                 errx(1, "can not open display");
2137
2138         if (active_wm())
2139                 errx(1, "other wm running");
2140
2141         astate = XInternAtom(display, "WM_STATE", False);
2142
2143         /* look for local and global conf file */
2144         pwd = getpwuid(getuid());
2145         if (pwd == NULL)
2146                 errx(1, "invalid user %d", getuid());
2147
2148         setup_screens();
2149
2150         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2151         if (stat(conf, &sb) != -1) {
2152                 if (S_ISREG(sb.st_mode))
2153                         cfile = conf;
2154         } else {
2155                 /* try global conf file */
2156                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2157                 if (!stat(conf, &sb))
2158                         if (S_ISREG(sb.st_mode))
2159                                 cfile = conf;
2160         }
2161         if (cfile)
2162                 conf_load(cfile);
2163         bar_refresh();
2164
2165         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2166
2167         grabkeys();
2168         stack();
2169
2170         xfd = ConnectionNumber(display);
2171         while (running) {
2172                 FD_ZERO(&rd);
2173                 FD_SET(xfd, &rd);
2174                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2175                         if (errno != EINTR)
2176                                 errx(1, "select failed");
2177                 if (bar_alarm) {
2178                         bar_alarm = 0;
2179                         bar_update();
2180                 }
2181                 while(XPending(display)) {
2182                         XNextEvent(display, &e);
2183                         if (handler[e.type])
2184                                 handler[e.type](&e);
2185                 }
2186         }
2187
2188         XCloseDisplay(display);
2189
2190         return (0);
2191 }