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 #define SWM_D_PROP              0x0080
 105
 106
 107 u_int32_t               swm_debug = 0
 108                             | SWM_D_MISC
 109                             | SWM_D_EVENT
 110                             | SWM_D_WS
 111                             | SWM_D_FOCUS
 112                             | SWM_D_MOVE
 113                             | SWM_D_STACK
 114                             | SWM_D_PROP
 115                             ;
 116 #else
 117 #define DPRINTF(x...)
 118 #define DNPRINTF(n,x...)
 119 #endif
 120
 121 #define LENGTH(x)               (sizeof x / sizeof x[0])
 122 #define MODKEY                  Mod1Mask
 123 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
 124 #define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
 125
 126 #define X(r)            (r)->g.x
 127 #define Y(r)            (r)->g.y
 128 #define WIDTH(r)        (r)->g.w
 129 #define HEIGHT(r)       (r)->g.h
 130
 131 #ifndef SWM_LIB
 132 #define SWM_LIB         "/usr/X11R6/lib/swmhack.so"
 133 #endif
 134
 135 #define SWM_PROPLEN     (16)
 136
 137 char                    **start_argv;
 138 Atom                    astate;
 139 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 140 int                     other_wm;
 141 int                     running = 1;
 142 int                     xrandr_eventbase;
 143 int                     ignore_enter = 0;
 144 unsigned int            numlockmask = 0;
 145 Display                 *display;
 146
 147 int                     cycle_empty = 0;
 148 int                     cycle_visible = 0;
 149
 150 /* dialog windows */
 151 double                  dialog_ratio = .6;
 152 /* status bar */
 153 #define SWM_BAR_MAX     (128)
 154 char                    *bar_argv[] = { NULL, NULL };
 155 int                     bar_pipe[2];
 156 char                    bar_ext[SWM_BAR_MAX];
 157 sig_atomic_t            bar_alarm = 0;
 158 int                     bar_delay = 30;
 159 int                     bar_enabled = 1;
 160 int                     bar_extra = 1;
 161 int                     bar_extra_running = 0;
 162 int                     bar_verbose = 1;
 163 int                     bar_height = 0;
 164 pid_t                   bar_pid;
 165 GC                      bar_gc;
 166 XGCValues               bar_gcv;
 167 int                     bar_fidx = 0;
 168 XFontStruct             *bar_fs;
 169 char                    *bar_fonts[] = {
 170                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 171                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 172                             NULL
 173 };
 174
 175 /* terminal + args */
 176 char                    *spawn_term[] = { "xterm", NULL };
 177 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL,
 178                             "-nb", NULL, "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 179
 180 #define SWM_MENU_FN     (2)
 181 #define SWM_MENU_NB     (4)
 182 #define SWM_MENU_NF     (6)
 183 #define SWM_MENU_SB     (8)
 184 #define SWM_MENU_SF     (10)
 185
 186 /* layout manager data */
 187 struct swm_geometry {
 188         int                     x;
 189         int                     y;
 190         int                     w;
 191         int                     h;
 192 };
 193
 194 struct swm_screen;
 195 struct workspace;
 196
 197 /* virtual "screens" */
 198 struct swm_region {
 199         TAILQ_ENTRY(swm_region) entry;
 200         struct swm_geometry     g;
 201         Window                  bar_window;
 202         struct workspace        *ws;    /* current workspace on this region */
 203         struct swm_screen       *s;     /* screen idx */
 204 };
 205 TAILQ_HEAD(swm_region_list, swm_region);
 206
 207 struct ws_win {
 208         TAILQ_ENTRY(ws_win)     entry;
 209         Window                  id;
 210         struct swm_geometry     g;
 211         int                     got_focus;
 212         int                     floating;
 213         int                     transient;
 214         struct workspace        *ws;    /* always valid */
 215         struct swm_screen       *s;     /* always valid, never changes */
 216         XWindowAttributes       wa;
 217 };
 218 TAILQ_HEAD(ws_win_list, ws_win);
 219
 220 /* layout handlers */
 221 void    stack(void);
 222 void    vertical_config(struct workspace *, int);
 223 void    vertical_stack(struct workspace *, struct swm_geometry *);
 224 void    horizontal_config(struct workspace *, int);
 225 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 226 void    max_stack(struct workspace *, struct swm_geometry *);
 227
 228 void    grabbuttons(struct ws_win *, int);
 229
 230 struct layout {
 231         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 232         void            (*l_config)(struct workspace *, int);
 233 } layouts[] =  {
 234         /* stack,               configure */
 235         { vertical_stack,       vertical_config},
 236         { horizontal_stack,     horizontal_config},
 237         { max_stack,            NULL},
 238         { NULL,                 NULL},
 239 };
 240
 241 #define SWM_H_SLICE             (32)
 242 #define SWM_V_SLICE             (32)
 243
 244 /* define work spaces */
 245 struct workspace {
 246         int                     idx;            /* workspace index */
 247         int                     restack;        /* restack on switch */
 248         struct layout           *cur_layout;    /* current layout handlers */
 249         struct ws_win           *focus;         /* may be NULL */
 250         struct swm_region       *r;             /* may be NULL */
 251         struct ws_win_list      winlist;        /* list of windows in ws */
 252
 253         /* stacker state */
 254         struct {
 255                                 int horizontal_msize;
 256                                 int horizontal_mwin;
 257                                 int vertical_msize;
 258                                 int vertical_mwin;
 259         } l_state;
 260 };
 261
 262 enum    { SWM_S_COLOR_BAR, SWM_S_COLOR_BAR_BORDER, SWM_S_COLOR_BAR_FONT,
 263           SWM_S_COLOR_FOCUS, SWM_S_COLOR_UNFOCUS, SWM_S_COLOR_MAX };
 264
 265 /* physical screen mapping */
 266 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 267 struct swm_screen {
 268         int                     idx;            /* screen index */
 269         struct swm_region_list  rl;     /* list of regions on this screen */
 270         Window                  root;
 271         int                     xrandr_support;
 272         struct workspace        ws[SWM_WS_MAX];
 273
 274         /* colors */
 275         struct {
 276                 unsigned long   color;
 277                 char            *name;
 278         } c[SWM_S_COLOR_MAX];
 279 };
 280 struct swm_screen       *screens;
 281 int                     num_screens;
 282
 283 struct ws_win           *cur_focus = NULL;
 284
 285 /* args to functions */
 286 union arg {
 287         int                     id;
 288 #define SWM_ARG_ID_FOCUSNEXT    (0)
 289 #define SWM_ARG_ID_FOCUSPREV    (1)
 290 #define SWM_ARG_ID_FOCUSMAIN    (2)
 291 #define SWM_ARG_ID_SWAPNEXT     (3)
 292 #define SWM_ARG_ID_SWAPPREV     (4)
 293 #define SWM_ARG_ID_SWAPMAIN     (5)
 294 #define SWM_ARG_ID_MASTERSHRINK (6)
 295 #define SWM_ARG_ID_MASTERGROW   (7)
 296 #define SWM_ARG_ID_MASTERADD    (8)
 297 #define SWM_ARG_ID_MASTERDEL    (9)
 298 #define SWM_ARG_ID_STACKRESET   (10)
 299 #define SWM_ARG_ID_STACKINIT    (11)
 300 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 301 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 302         char                    **argv;
 303 };
 304
 305 unsigned long
 306 name_to_color(char *colorname)
 307 {
 308         Colormap                cmap;
 309         Status                  status;
 310         XColor                  screen_def, exact_def;
 311         unsigned long           result = 0;
 312         char                    cname[32] = "#";
 313
 314         cmap = DefaultColormap(display, screens[0].idx);
 315         status = XAllocNamedColor(display, cmap, colorname,
 316             &screen_def, &exact_def);
 317         if (!status) {
 318                 strlcat(cname, colorname + 2, sizeof cname - 1);
 319                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 320                     &exact_def);
 321         }
 322         if (status)
 323                 result = screen_def.pixel;
 324         else
 325                 fprintf(stderr, "color '%s' not found.\n", colorname);
 326
 327         return (result);
 328 }
 329
 330 void
 331 setscreencolor(char *val, int i, int c)
 332 {
 333         if (i > 0 && i <= ScreenCount(display)) {
 334                 screens[i - 1].c[c].color = name_to_color(val);
 335                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 336                         errx(1, "strdup");
 337         } else if (i == -1) {
 338                 for (i = 0; i < ScreenCount(display); i++)
 339                         screens[i].c[c].color = name_to_color(val);
 340                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 341                                 errx(1, "strdup");
 342         } else
 343                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 344                     i, ScreenCount(display));
 345 }
 346
 347 int
 348 varmatch(char *var, char *name, int *index)
 349 {
 350         char                    *p, buf[5];
 351         int                     i;
 352
 353         i = strncmp(var, name, 255);
 354         if (index == NULL)
 355                 return (i);
 356
 357         *index = -1;
 358         if (i <= 0)
 359                 return (i);
 360         p = var + strlen(name);
 361         if (*p++ != '[')
 362                 return (i);
 363         bzero(buf, sizeof buf);
 364         i = 0;
 365         while (isdigit(*p) && i < sizeof buf)
 366                 buf[i++] = *p++;
 367         if (i == 0 || i >= sizeof buf || *p != ']')
 368                 return (1);
 369         *index = strtonum(buf, 0, 99, NULL);
 370         return (0);
 371 }
 372
 373 /* conf file stuff */
 374 #define SWM_CONF_WS     "\n= \t"
 375 #define SWM_CONF_FILE   "scrotwm.conf"
 376 int
 377 conf_load(char *filename)
 378 {
 379         FILE                    *config;
 380         char                    *line, *cp, *var, *val;
 381         size_t                  len, lineno = 0;
 382         int                     i, sc;
 383
 384         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 385
 386         if (filename == NULL)
 387                 return (1);
 388
 389         if ((config = fopen(filename, "r")) == NULL)
 390                 return (1);
 391
 392         for (sc = ScreenCount(display);;) {
 393                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 394                         if (feof(config))
 395                                 break;
 396                 cp = line;
 397                 cp += (long)strspn(cp, SWM_CONF_WS);
 398                 if (cp[0] == '\0') {
 399                         /* empty line */
 400                         free(line);
 401                         continue;
 402                 }
 403                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 404                         break;
 405                 cp += (long)strspn(cp, SWM_CONF_WS);
 406                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 407                         break;
 408
 409                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 410                 switch (var[0]) {
 411                 case 'b':
 412                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 413                                 bar_enabled = atoi(val);
 414                         else if (!varmatch(var, "bar_border", &i))
 415                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 416                         else if (!varmatch(var, "bar_color", &i))
 417                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 418                         else if (!varmatch(var, "bar_font_color", &i))
 419                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 420                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 421                                 asprintf(&bar_fonts[0], "%s", val);
 422                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 423                                 asprintf(&bar_argv[0], "%s", val);
 424                         else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 425                                 bar_delay = atoi(val);
 426                         else
 427                                 goto bad;
 428                         break;
 429
 430                 case 'c':
 431                         if (!varmatch(var, "color_focus", &i))
 432                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 433                         else if (!varmatch(var, "color_unfocus", &i))
 434                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 435                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 436                                 cycle_visible = atoi(val);
 437                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 438                                 cycle_visible = atoi(val);
 439                         else
 440                                 goto bad;
 441                         break;
 442
 443                 case 'd':
 444                         if (!strncmp(var, "dialog_ratio",
 445                             strlen("dialog_ratio"))) {
 446                                 dialog_ratio = atof(val);
 447                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 448                                         dialog_ratio = .6;
 449                         } else
 450                                 goto bad;
 451                         break;
 452
 453                 case 's':
 454                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 455                                 asprintf(&spawn_term[0], "%s", val); /* XXX args? */
 456                         break;
 457                 default:
 458                         goto bad;
 459                 }
 460                 free(line);
 461         }
 462
 463         fclose(config);
 464         return (0);
 465
 466 bad:
 467         errx(1, "invalid conf file entry: %s=%s", var, val);
 468 }
 469
 470 void
 471 socket_setnonblock(int fd)
 472 {
 473         int                     flags;
 474
 475         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 476                 err(1, "fcntl F_GETFL");
 477         flags |= O_NONBLOCK;
 478         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 479                 err(1, "fcntl F_SETFL");
 480 }
 481
 482 void
 483 bar_print(struct swm_region *r, char *s)
 484 {
 485         XClearWindow(display, r->bar_window);
 486         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 487         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 488             strlen(s));
 489 }
 490
 491 void
 492 bar_extra_stop(void)
 493 {
 494         if (bar_pipe[0]) {
 495                 close(bar_pipe[0]);
 496                 bzero(bar_pipe, sizeof bar_pipe);
 497         }
 498         if (bar_pid) {
 499                 kill(bar_pid, SIGTERM);
 500                 bar_pid = 0;
 501         }
 502         strlcpy(bar_ext, "", sizeof bar_ext);
 503         bar_extra = 0;
 504 }
 505
 506 void
 507 bar_update(void)
 508 {
 509         time_t                  tmt;
 510         struct tm               tm;
 511         struct swm_region       *r;
 512         int                     i, x;
 513         size_t                  len;
 514         char                    s[SWM_BAR_MAX];
 515         char                    loc[SWM_BAR_MAX];
 516         char                    *b;
 517
 518         if (bar_enabled == 0)
 519                 return;
 520
 521         if (bar_extra && bar_extra_running) {
 522                 /* ignore short reads; it'll correct itself */
 523                 while ((b = fgetln(stdin, &len)) != NULL)
 524                         if (b && b[len - 1] == '\n') {
 525                                 b[len - 1] = '\0';
 526                                 strlcpy(bar_ext, b, sizeof bar_ext);
 527                         }
 528                 if (b == NULL && errno != EAGAIN) {
 529                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 530                             errno, strerror(errno));
 531                         bar_extra_stop();
 532                 }
 533         } else
 534                 strlcpy(bar_ext, "", sizeof bar_ext);
 535
 536         time(&tmt);
 537         localtime_r(&tmt, &tm);
 538         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 539         for (i = 0; i < ScreenCount(display); i++) {
 540                 x = 1;
 541                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 542                         snprintf(loc, sizeof loc, "%s     %d:%d    %s",
 543                             s, x++, r->ws->idx + 1, bar_ext);
 544                         bar_print(r, loc);
 545                 }
 546         }
 547         XSync(display, False);
 548         alarm(bar_delay);
 549 }
 550
 551 void
 552 bar_signal(int sig)
 553 {
 554         bar_alarm = 1;
 555 }
 556
 557 void
 558 bar_toggle(struct swm_region *r, union arg *args)
 559 {
 560         struct swm_region       *tmpr;
 561         int                     i, j, sc = ScreenCount(display);
 562
 563         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 564
 565         if (bar_enabled) {
 566                 for (i = 0; i < sc; i++)
 567                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 568                                 XUnmapWindow(display, tmpr->bar_window);
 569         } else {
 570                 for (i = 0; i < sc; i++)
 571                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 572                                 XMapRaised(display, tmpr->bar_window);
 573         }
 574         bar_enabled = !bar_enabled;
 575         XSync(display, False);
 576         for (i = 0; i < sc; i++)
 577                 for (j = 0; j < SWM_WS_MAX; j++)
 578                         screens[i].ws[j].restack = 1;
 579
 580         stack();
 581         /* must be after stack */
 582         for (i = 0; i < sc; i++)
 583                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 584                         bar_update();
 585 }
 586
 587 void
 588 bar_refresh(void)
 589 {
 590         XSetWindowAttributes    wa;
 591         struct swm_region       *r;
 592         int                     i;
 593
 594         /* do this here because the conf file is in memory */
 595         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 596                 /* launch external status app */
 597                 bar_extra_running = 1;
 598                 if (pipe(bar_pipe) == -1)
 599                         err(1, "pipe error");
 600                 socket_setnonblock(bar_pipe[0]);
 601                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 602                 if (dup2(bar_pipe[0], 0) == -1)
 603                         errx(1, "dup2");
 604                 if (dup2(bar_pipe[1], 1) == -1)
 605                         errx(1, "dup2");
 606                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 607                         err(1, "could not disable SIGPIPE");
 608                 switch (bar_pid = fork()) {
 609                 case -1:
 610                         err(1, "cannot fork");
 611                         break;
 612                 case 0: /* child */
 613                         close(bar_pipe[0]);
 614                         execvp(bar_argv[0], bar_argv);
 615                         err(1, "%s external app failed", bar_argv[0]);
 616                         break;
 617                 default: /* parent */
 618                         close(bar_pipe[1]);
 619                         break;
 620                 }
 621         }
 622
 623         bzero(&wa, sizeof wa);
 624         for (i = 0; i < ScreenCount(display); i++)
 625                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 626                         wa.border_pixel =
 627                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 628                         wa.background_pixel =
 629                             screens[i].c[SWM_S_COLOR_BAR].color;
 630                         XChangeWindowAttributes(display, r->bar_window,
 631                             CWBackPixel | CWBorderPixel, &wa);
 632                 }
 633         bar_update();
 634 }
 635
 636 void
 637 bar_setup(struct swm_region *r)
 638 {
 639         int                     i;
 640
 641         for (i = 0; bar_fonts[i] != NULL; i++) {
 642                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 643                 if (bar_fs) {
 644                         bar_fidx = i;
 645                         break;
 646                 }
 647         }
 648         if (bar_fonts[i] == NULL)
 649                         errx(1, "couldn't load font");
 650         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 651
 652         r->bar_window = XCreateSimpleWindow(display,
 653             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 654             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 655             r->s->c[SWM_S_COLOR_BAR].color);
 656         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 657         XSetFont(display, bar_gc, bar_fs->fid);
 658         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 659         if (bar_enabled)
 660                 XMapRaised(display, r->bar_window);
 661         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 662
 663         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 664                 err(1, "could not install bar_signal");
 665         bar_refresh();
 666 }
 667
 668 void
 669 config_win(struct ws_win *win)
 670 {
 671         XConfigureEvent         ce;
 672
 673         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 674             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 675         ce.type = ConfigureNotify;
 676         ce.display = display;
 677         ce.event = win->id;
 678         ce.window = win->id;
 679         ce.x = win->g.x;
 680         ce.y = win->g.y;
 681         ce.width = win->g.w;
 682         ce.height = win->g.h;
 683         ce.border_width = 1; /* XXX store this! */
 684         ce.above = None;
 685         ce.override_redirect = False;
 686         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 687 }
 688
 689 int
 690 count_win(struct workspace *ws, int count_transient)
 691 {
 692         struct ws_win           *win;
 693         int                     count = 0;
 694
 695         TAILQ_FOREACH(win, &ws->winlist, entry) {
 696                 if (count_transient == 0 && win->floating)
 697                         continue;
 698                 if (count_transient == 0 && win->transient)
 699                         continue;
 700                 count++;
 701         }
 702         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 703
 704         return (count);
 705 }
 706
 707 void
 708 quit(struct swm_region *r, union arg *args)
 709 {
 710         DNPRINTF(SWM_D_MISC, "quit\n");
 711         running = 0;
 712 }
 713
 714 void
 715 restart(struct swm_region *r, union arg *args)
 716 {
 717         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 718
 719         /* disable alarm because the following code may not be interrupted */
 720         alarm(0);
 721         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 722                 errx(1, "can't disable alarm");
 723
 724         bar_extra_stop();
 725         bar_extra = 1;
 726         XCloseDisplay(display);
 727         execvp(start_argv[0], start_argv);
 728         fprintf(stderr, "execvp failed\n");
 729         perror(" failed");
 730         quit(NULL, NULL);
 731 }
 732
 733 struct swm_region *
 734 root_to_region(Window root)
 735 {
 736         struct swm_region       *r;
 737         Window                  rr, cr;
 738         int                     i, x, y, wx, wy;
 739         unsigned int            mask;
 740
 741         for (i = 0; i < ScreenCount(display); i++)
 742                 if (screens[i].root == root)
 743                         break;
 744
 745         if (XQueryPointer(display, screens[i].root,
 746             &rr, &cr, &x, &y, &wx, &wy, &mask) == False) {
 747                 /* if we can't query the pointer, grab the first region */
 748                 r = TAILQ_FIRST(&screens[i].rl);
 749         } else {
 750                 /* otherwise, choose a region based on pointer location */
 751                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 752                         if (x >= X(r) && x <= X(r) + WIDTH(r) &&
 753                             y >= Y(r) && y <= Y(r) + HEIGHT(r))
 754                                 break;
 755                 }
 756
 757                 if (r == NULL)
 758                         r = TAILQ_FIRST(&screens[i].rl);
 759         }
 760         return (r);
 761 }
 762
 763 struct ws_win *
 764 find_window(Window id)
 765 {
 766         struct ws_win           *win;
 767         int                     i, j;
 768
 769         for (i = 0; i < ScreenCount(display); i++)
 770                 for (j = 0; j < SWM_WS_MAX; j++)
 771                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 772                                 if (id == win->id)
 773                                         return (win);
 774         return (NULL);
 775 }
 776
 777 void
 778 spawn(struct swm_region *r, union arg *args)
 779 {
 780         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 781         /*
 782          * The double-fork construct avoids zombie processes and keeps the code
 783          * clean from stupid signal handlers.
 784          */
 785         if (fork() == 0) {
 786                 if (fork() == 0) {
 787                         char *ret;
 788                         if (display)
 789                                 close(ConnectionNumber(display));
 790                         setenv("LD_PRELOAD", SWM_LIB, 1);
 791                         if (asprintf(&ret, "%d", r->ws->idx))
 792                                 setenv("_SWM_WS", ret, 1);
 793                         if (asprintf(&ret, "%d", getpid()))
 794                                 setenv("_SWM_PID", ret, 1);
 795                         setsid();
 796                         execvp(args->argv[0], args->argv);
 797                         fprintf(stderr, "execvp failed\n");
 798                         perror(" failed");
 799                 }
 800                 exit(0);
 801         }
 802         wait(0);
 803 }
 804
 805 void
 806 spawnmenu(struct swm_region *r, union arg *args)
 807 {
 808         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
 809
 810         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
 811         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
 812         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
 813         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
 814         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
 815
 816         spawn(r, args);
 817 }
 818
 819 void
 820 unfocus_all(void)
 821 {
 822         struct ws_win           *win;
 823         int                     i, j;
 824
 825         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
 826
 827         for (i = 0; i < ScreenCount(display); i++)
 828                 for (j = 0; j < SWM_WS_MAX; j++)
 829                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
 830                                 if (win->ws->r == NULL)
 831                                         continue;
 832                                 grabbuttons(win, 0);
 833                                 XSetWindowBorder(display, win->id,
 834                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
 835                                 win->got_focus = 0;
 836                                 win->ws->focus = NULL;
 837                                 cur_focus = NULL;
 838                         }
 839 }
 840
 841 void
 842 focus_win(struct ws_win *win)
 843 {
 844         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
 845
 846         if (win == NULL)
 847                 return;
 848
 849         unfocus_all();
 850         win->ws->focus = win;
 851         if (win->ws->r != NULL) {
 852                 cur_focus = win;
 853                 if (!win->got_focus) {
 854                         XSetWindowBorder(display, win->id,
 855                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
 856                         grabbuttons(win, 1);
 857                 }
 858                 win->got_focus = 1;
 859                 XSetInputFocus(display, win->id,
 860                     RevertToPointerRoot, CurrentTime);
 861         }
 862 }
 863
 864 void
 865 switchws(struct swm_region *r, union arg *args)
 866 {
 867         int                     wsid = args->id;
 868         struct swm_region       *this_r, *other_r;
 869         struct ws_win           *win;
 870         struct workspace        *new_ws, *old_ws;
 871
 872         this_r = r;
 873         old_ws = this_r->ws;
 874         new_ws = &this_r->s->ws[wsid];
 875
 876         DNPRINTF(SWM_D_WS, "switchws screen %d region %dx%d+%d+%d: "
 877             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
 878             old_ws->idx, wsid);
 879
 880         if (new_ws == old_ws)
 881                 return;
 882
 883         other_r = new_ws->r;
 884         if (!other_r) {
 885                 /* if the other workspace is hidden, switch windows */
 886                 /* map new window first to prevent ugly blinking */
 887                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
 888                         XMapRaised(display, win->id);
 889
 890                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
 891                         XUnmapWindow(display, win->id);
 892
 893                 old_ws->r = NULL;
 894                 old_ws->restack = 1;
 895         } else {
 896                 other_r->ws = old_ws;
 897                 old_ws->r = other_r;
 898         }
 899         this_r->ws = new_ws;
 900         new_ws->r = this_r;
 901
 902         ignore_enter = 1;
 903         /* set focus */
 904         if (new_ws->focus)
 905                 focus_win(new_ws->focus);
 906         stack();
 907         bar_update();
 908 }
 909
 910 void
 911 cyclews(struct swm_region *r, union arg *args)
 912 {
 913         union                   arg a;
 914         struct swm_screen       *s = r->s;
 915
 916         DNPRINTF(SWM_D_WS, "cyclews id %d "
 917             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 918             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 919
 920         a.id = r->ws->idx;
 921
 922         do {
 923                 switch (args->id) {
 924                 case SWM_ARG_ID_CYCLEWS_UP:
 925                         if (a.id < SWM_WS_MAX - 1)
 926                                 a.id++;
 927                         else
 928                                 a.id = 0;
 929                         break;
 930                 case SWM_ARG_ID_CYCLEWS_DOWN:
 931                         if (a.id > 0)
 932                                 a.id--;
 933                         else
 934                                 a.id = SWM_WS_MAX - 1;
 935                         break;
 936                 default:
 937                         return;
 938                 };
 939
 940                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
 941                         continue;
 942                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
 943                         continue;
 944
 945                 switchws(r, &a);
 946         } while (a.id != r->ws->idx);
 947 }
 948
 949 void
 950 swapwin(struct swm_region *r, union arg *args)
 951 {
 952         struct ws_win           *target;
 953         struct ws_win_list      *wl;
 954
 955
 956         DNPRINTF(SWM_D_WS, "swapwin id %d "
 957             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 958             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 959         if (cur_focus == NULL)
 960                 return;
 961
 962         wl = &cur_focus->ws->winlist;
 963
 964         switch (args->id) {
 965         case SWM_ARG_ID_SWAPPREV:
 966                 target = TAILQ_PREV(cur_focus, ws_win_list, entry);
 967                 TAILQ_REMOVE(wl, cur_focus, entry);
 968                 if (target == NULL)
 969                         TAILQ_INSERT_TAIL(wl, cur_focus, entry);
 970                 else
 971                         TAILQ_INSERT_BEFORE(target, cur_focus, entry);
 972                 break;
 973         case SWM_ARG_ID_SWAPNEXT:
 974                 target = TAILQ_NEXT(cur_focus, entry);
 975                 TAILQ_REMOVE(wl, cur_focus, entry);
 976                 if (target == NULL)
 977                         TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 978                 else
 979                         TAILQ_INSERT_AFTER(wl, target, cur_focus, entry);
 980                 break;
 981         case SWM_ARG_ID_SWAPMAIN:
 982                 target = TAILQ_FIRST(wl);
 983                 if (target == cur_focus)
 984                         return;
 985                 TAILQ_REMOVE(wl, target, entry);
 986                 TAILQ_INSERT_BEFORE(cur_focus, target, entry);
 987                 TAILQ_REMOVE(wl, cur_focus, entry);
 988                 TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 989                 break;
 990         default:
 991                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
 992                 return;
 993         }
 994
 995         ignore_enter = 2;
 996         stack();
 997 }
 998
 999 void
1000 focus(struct swm_region *r, union arg *args)
1001 {
1002         struct ws_win           *winfocus, *winlostfocus;
1003         struct ws_win_list      *wl;
1004
1005         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
1006         if (cur_focus == NULL)
1007                 return;
1008
1009         wl = &cur_focus->ws->winlist;
1010
1011         winlostfocus = cur_focus;
1012
1013         switch (args->id) {
1014         case SWM_ARG_ID_FOCUSPREV:
1015                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1016                 if (winfocus == NULL)
1017                         winfocus = TAILQ_LAST(wl, ws_win_list);
1018                 break;
1019
1020         case SWM_ARG_ID_FOCUSNEXT:
1021                 winfocus = TAILQ_NEXT(cur_focus, entry);
1022                 if (winfocus == NULL)
1023                         winfocus = TAILQ_FIRST(wl);
1024                 break;
1025
1026         case SWM_ARG_ID_FOCUSMAIN:
1027                 winfocus = TAILQ_FIRST(wl);
1028                 break;
1029
1030         default:
1031                 return;
1032         }
1033
1034         if (winfocus == winlostfocus)
1035                 return;
1036
1037         focus_win(winfocus);
1038         XSync(display, False);
1039 }
1040
1041 void
1042 cycle_layout(struct swm_region *r, union arg *args)
1043 {
1044         struct workspace        *ws = r->ws;
1045
1046         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1047
1048         ws->cur_layout++;
1049         if (ws->cur_layout->l_stack == NULL)
1050                 ws->cur_layout = &layouts[0];
1051         ignore_enter = 1;
1052
1053         stack();
1054 }
1055
1056 void
1057 stack_config(struct swm_region *r, union arg *args)
1058 {
1059         struct workspace        *ws = r->ws;
1060
1061         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1062             args->id, ws->idx);
1063
1064         if (ws->cur_layout->l_config != NULL)
1065                 ws->cur_layout->l_config(ws, args->id);
1066
1067         if (args->id != SWM_ARG_ID_STACKINIT);
1068                 stack();
1069 }
1070
1071 void
1072 stack(void) {
1073         struct swm_geometry     g;
1074         struct swm_region       *r;
1075         int                     i, j;
1076
1077         DNPRINTF(SWM_D_STACK, "stack\n");
1078
1079         for (i = 0; i < ScreenCount(display); i++) {
1080                 j = 0;
1081                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1082                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1083                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1084
1085                         /* start with screen geometry, adjust for bar */
1086                         g = r->g;
1087                         g.w -= 2;
1088                         g.h -= 2;
1089                         if (bar_enabled) {
1090                                 g.y += bar_height;
1091                                 g.h -= bar_height;
1092                         }
1093
1094                         r->ws->restack = 0;
1095                         r->ws->cur_layout->l_stack(r->ws, &g);
1096                 }
1097         }
1098         XSync(display, False);
1099 }
1100
1101 void
1102 stack_floater(struct ws_win *win, struct swm_region *r)
1103 {
1104         unsigned int            mask;
1105         XWindowChanges          wc;
1106
1107         bzero(&wc, sizeof wc);
1108         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1109         wc.border_width = 1;
1110         if (win->transient) {
1111                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1112                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1113         }
1114         wc.width = win->g.w;
1115         wc.height = win->g.h;
1116         wc.x = (WIDTH(r) - win->g.w) / 2;
1117         wc.y = (HEIGHT(r) - win->g.h) / 2;
1118
1119         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1120             win->id, wc.x, wc.y, wc.width, wc.height);
1121
1122         XConfigureWindow(display, win->id, mask, &wc);
1123 }
1124
1125 void
1126 vertical_config(struct workspace *ws, int id)
1127 {
1128         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1129
1130         switch (id) {
1131         case SWM_ARG_ID_STACKRESET:
1132         case SWM_ARG_ID_STACKINIT:
1133                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1134                 ws->l_state.vertical_mwin = 1;
1135                 break;
1136         case SWM_ARG_ID_MASTERSHRINK:
1137                 if (ws->l_state.vertical_msize > 1)
1138                         ws->l_state.vertical_msize--;
1139                 break;
1140         case SWM_ARG_ID_MASTERGROW:
1141                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1142                         ws->l_state.vertical_msize++;
1143                 break;
1144         case SWM_ARG_ID_MASTERADD:
1145                 ws->l_state.vertical_mwin++;
1146                 break;
1147         case SWM_ARG_ID_MASTERDEL:
1148                 if (ws->l_state.vertical_mwin > 0)
1149                         ws->l_state.vertical_mwin--;
1150                 break;
1151         default:
1152                 return;
1153         }
1154 }
1155
1156 void
1157 vertical_stack(struct workspace *ws, struct swm_geometry *g) {
1158         XWindowChanges          wc;
1159         struct swm_geometry     gg = *g;
1160         struct ws_win           *win, *winfocus;
1161         int                     i, j, split, colno, hrh, winno, main_width;
1162         unsigned int            mask;
1163
1164         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1165
1166         if ((winno = count_win(ws, 0)) == 0)
1167                 return;
1168
1169         if (ws->focus == NULL)
1170                 ws->focus = TAILQ_FIRST(&ws->winlist);
1171         winfocus = cur_focus ? cur_focus : ws->focus;
1172
1173         if (ws->l_state.vertical_mwin &&
1174             winno > ws->l_state.vertical_mwin) {
1175                 split = ws->l_state.vertical_mwin;
1176                 colno = split;
1177                 main_width = (g->w / SWM_V_SLICE) *
1178                    ws->l_state.vertical_msize;
1179                 gg.w = main_width;
1180         } else {
1181                 colno = winno;
1182                 split = 0;
1183         }
1184         hrh = g->h / colno;
1185         gg.h = hrh - 2;
1186
1187         i = j = 0;
1188         TAILQ_FOREACH(win, &ws->winlist, entry) {
1189                 if (split && i == split) {
1190                         colno = winno - split;
1191                         hrh = (g->h / colno);
1192                         gg.x += main_width + 2;
1193                         gg.w = g->w - (main_width + 2);
1194                         gg.h = hrh - 2;
1195                         j = 0;
1196                 }
1197                 if (j == colno - 1)
1198                         gg.h = (hrh + (g->h - (colno * hrh)));
1199
1200                 if (j == 0)
1201                         gg.y = g->y;
1202                 else
1203                         gg.y += hrh;
1204
1205
1206                 if (win->transient != 0 || win->floating != 0)
1207                         stack_floater(win, ws->r);
1208                 else {
1209                         bzero(&wc, sizeof wc);
1210                         wc.border_width = 1;
1211                         win->g.x = wc.x = gg.x;
1212                         win->g.y = wc.y = gg.y;
1213                         win->g.w = wc.width = gg.w;
1214                         win->g.h = wc.height = gg.h;
1215                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1216                         XConfigureWindow(display, win->id, mask, &wc);
1217                         /*
1218                         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);
1219                         */
1220                 }
1221
1222                 XMapRaised(display, win->id);
1223                 i++;
1224                 j++;
1225         }
1226
1227         if (winfocus)
1228                 focus_win(winfocus); /* has to be done outside of the loop */
1229 }
1230
1231 void
1232 horizontal_config(struct workspace *ws, int id)
1233 {
1234         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1235
1236         switch (id) {
1237         case SWM_ARG_ID_STACKRESET:
1238         case SWM_ARG_ID_STACKINIT:
1239                 ws->l_state.horizontal_mwin = 1;
1240                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1241                 break;
1242         case SWM_ARG_ID_MASTERSHRINK:
1243                 if (ws->l_state.horizontal_msize > 1)
1244                         ws->l_state.horizontal_msize--;
1245                 break;
1246         case SWM_ARG_ID_MASTERGROW:
1247                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1248                         ws->l_state.horizontal_msize++;
1249                 break;
1250         case SWM_ARG_ID_MASTERADD:
1251                 ws->l_state.horizontal_mwin++;
1252                 break;
1253         case SWM_ARG_ID_MASTERDEL:
1254                 if (ws->l_state.horizontal_mwin > 0)
1255                         ws->l_state.horizontal_mwin--;
1256                 break;
1257         default:
1258                 return;
1259         }
1260 }
1261
1262 void
1263 horizontal_stack(struct workspace *ws, struct swm_geometry *g) {
1264         XWindowChanges          wc;
1265         struct swm_geometry     gg = *g;
1266         struct ws_win           *win, *winfocus;
1267         int                     i, j, split, rowno, hrw, winno, main_height;
1268         unsigned int            mask;
1269
1270         DNPRINTF(SWM_D_STACK, "horizontal_stack: workspace: %d\n", ws->idx);
1271
1272         if ((winno = count_win(ws, 0)) == 0)
1273                 return;
1274
1275         if (ws->focus == NULL)
1276                 ws->focus = TAILQ_FIRST(&ws->winlist);
1277         winfocus = cur_focus ? cur_focus : ws->focus;
1278
1279         if (ws->l_state.horizontal_mwin &&
1280             winno > ws->l_state.horizontal_mwin) {
1281                 split = ws->l_state.horizontal_mwin;
1282                 rowno = split;
1283                 main_height = (g->h / SWM_V_SLICE) *
1284                    ws->l_state.horizontal_msize;
1285                 gg.h = main_height;
1286         } else {
1287                 rowno = winno;
1288                 split = 0;
1289         }
1290         hrw = g->w / rowno;
1291         gg.w = hrw - 2;
1292
1293         i = j = 0;
1294         TAILQ_FOREACH(win, &ws->winlist, entry) {
1295                 if (split && i == split) {
1296                         rowno = winno - split;
1297                         hrw = (g->w / rowno);
1298                         gg.y += main_height + 2;
1299                         gg.h = g->h - (main_height + 2);
1300                         gg.w = hrw - 2;
1301                         j = 0;
1302                 }
1303                 if (j == rowno - 1)
1304                         gg.w = (hrw + (g->w - (rowno * hrw)));
1305
1306                 if (j == 0)
1307                         gg.x = g->x;
1308                 else
1309                         gg.x += hrw;
1310
1311                 if (win->transient != 0 || win->floating != 0)
1312                         stack_floater(win, ws->r);
1313                 else {
1314                         bzero(&wc, sizeof wc);
1315                         wc.border_width = 1;
1316                         win->g.x = wc.x = gg.x;
1317                         win->g.y = wc.y = gg.y;
1318                         win->g.w = wc.width = gg.w;
1319                         win->g.h = wc.height = gg.h;
1320                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1321                         XConfigureWindow(display, win->id, mask, &wc);
1322                 }
1323
1324                 XMapRaised(display, win->id);
1325                 j++;
1326                 i++;
1327         }
1328
1329         if (winfocus)
1330                 focus_win(winfocus); /* this has to be done outside of the loop */
1331 }
1332
1333 /* fullscreen view */
1334 void
1335 max_stack(struct workspace *ws, struct swm_geometry *g) {
1336         XWindowChanges          wc;
1337         struct swm_geometry     gg = *g;
1338         struct ws_win           *win, *winfocus;
1339         unsigned int            mask;
1340
1341         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1342
1343         if (count_win(ws, 0) == 0)
1344                 return;
1345
1346         if (ws->focus == NULL)
1347                 ws->focus = TAILQ_FIRST(&ws->winlist);
1348         winfocus = cur_focus ? cur_focus : ws->focus;
1349
1350         TAILQ_FOREACH(win, &ws->winlist, entry) {
1351                 if (win->transient != 0 || win->floating != 0) {
1352                         if (win == ws->focus) {
1353                                 /* XXX maximize? */
1354                                 stack_floater(win, ws->r);
1355                                 XMapRaised(display, win->id);
1356                         } else
1357                                 XUnmapWindow(display, win->id);
1358                 } else {
1359                         bzero(&wc, sizeof wc);
1360                         wc.border_width = 1;
1361                         win->g.x = wc.x = gg.x;
1362                         win->g.y = wc.y = gg.y;
1363                         win->g.w = wc.width = gg.w;
1364                         win->g.h = wc.height = gg.h;
1365                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1366                         XConfigureWindow(display, win->id, mask, &wc);
1367
1368                         if (win == ws->focus) {
1369                                 XMapRaised(display, win->id);
1370                         } else
1371                                 XUnmapWindow(display, win->id);
1372                 }
1373         }
1374
1375         if (winfocus)
1376                 focus_win(winfocus); /* has to be done outside of the loop */
1377 }
1378
1379 void
1380 send_to_ws(struct swm_region *r, union arg *args)
1381 {
1382         int                     wsid = args->id;
1383         struct ws_win           *win = cur_focus;
1384         struct workspace        *ws, *nws;
1385         Atom                    ws_idx_atom = 0;
1386         unsigned char           ws_idx_str[SWM_PROPLEN];
1387
1388         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1389
1390         ws = win->ws;
1391         nws = &win->s->ws[wsid];
1392
1393         XUnmapWindow(display, win->id);
1394
1395         /* find a window to focus */
1396         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1397         if (ws->focus == NULL)
1398                 ws->focus = TAILQ_FIRST(&ws->winlist);
1399         if (ws->focus == win)
1400                 ws->focus = NULL;
1401
1402         TAILQ_REMOVE(&ws->winlist, win, entry);
1403
1404         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1405         win->ws = nws;
1406
1407         /* Try to update the window's workspace property */
1408         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1409         if (ws_idx_atom &&
1410             snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
1411                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1412                     ws_idx_str);
1413                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1414                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1415         }
1416
1417         if (count_win(nws, 1) == 1)
1418                 nws->focus = win;
1419         ws->restack = 1;
1420         nws->restack = 1;
1421
1422         stack();
1423 }
1424
1425 void
1426 wkill(struct swm_region *r, union arg *args)
1427 {
1428         DNPRINTF(SWM_D_MISC, "wkill\n");
1429         if(r->ws->focus != NULL)
1430                 XKillClient(display, r->ws->focus->id);
1431 }
1432
1433 /* key definitions */
1434 struct key {
1435         unsigned int            mod;
1436         KeySym                  keysym;
1437         void                    (*func)(struct swm_region *r, union arg *);
1438         union arg               args;
1439 } keys[] = {
1440         /* modifier             key     function                argument */
1441         { MODKEY,               XK_space,       cycle_layout,   {0} },
1442         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1443         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1444         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1445         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1446         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1447         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1448         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1449         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1450         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1451         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1452         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1453         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1454         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1455         { MODKEY,               XK_q,           restart,        {0} },
1456         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1457         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1458         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1459         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1460         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1461         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1462         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1463         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1464         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1465         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1466         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1467         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1468         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1469         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1470         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1471         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1472         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1473         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1474         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1475         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1476         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1477         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1478         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1479         { MODKEY,               XK_b,           bar_toggle,     {0} },
1480         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1481         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1482         { MODKEY | ShiftMask,   XK_x,           wkill,          {0} },
1483 };
1484
1485 void
1486 click(struct swm_region *r, union arg *args)
1487 {
1488         DNPRINTF(SWM_D_MOUSE, "click: button: %d\n", args->id);
1489
1490         switch (args->id) {
1491         case Button1:
1492                 break;
1493         case Button2:
1494                 break;
1495         case Button3:
1496                 break;
1497         default:
1498                 return;
1499         }
1500 }
1501
1502 /* mouse */
1503 enum { client_click, root_click };
1504 struct button {
1505         unsigned int            action;
1506         unsigned int            mask;
1507         unsigned int            button;
1508         void                    (*func)(struct swm_region *r, union arg *);
1509         union arg               args;
1510 } buttons[] = {
1511           /* action             key             mouse button    func            args */
1512         { client_click,         MODKEY,         Button1,        click, {.id=Button1} },
1513 };
1514
1515 void
1516 updatenumlockmask(void)
1517 {
1518         unsigned int            i, j;
1519         XModifierKeymap         *modmap;
1520
1521         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1522         numlockmask = 0;
1523         modmap = XGetModifierMapping(display);
1524         for (i = 0; i < 8; i++)
1525                 for (j = 0; j < modmap->max_keypermod; j++)
1526                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1527                           == XKeysymToKeycode(display, XK_Num_Lock))
1528                                 numlockmask = (1 << i);
1529
1530         XFreeModifiermap(modmap);
1531 }
1532
1533 void
1534 grabkeys(void)
1535 {
1536         unsigned int            i, j, k;
1537         KeyCode                 code;
1538         unsigned int            modifiers[] =
1539             { 0, LockMask, numlockmask, numlockmask | LockMask };
1540
1541         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1542         updatenumlockmask();
1543
1544         for (k = 0; k < ScreenCount(display); k++) {
1545                 if (TAILQ_EMPTY(&screens[k].rl))
1546                         continue;
1547                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1548                 for (i = 0; i < LENGTH(keys); i++) {
1549                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1550                                 for (j = 0; j < LENGTH(modifiers); j++)
1551                                         XGrabKey(display, code,
1552                                             keys[i].mod | modifiers[j],
1553                                             screens[k].root, True,
1554                                             GrabModeAsync, GrabModeAsync);
1555                 }
1556         }
1557 }
1558
1559 void
1560 grabbuttons(struct ws_win *win, int focused)
1561 {
1562         unsigned int            i, j;
1563         unsigned int            modifiers[] =
1564             { 0, LockMask, numlockmask, numlockmask|LockMask };
1565
1566         updatenumlockmask();
1567         XUngrabButton(display, AnyButton, AnyModifier, win->id);
1568         if(focused) {
1569                 for (i = 0; i < LENGTH(buttons); i++)
1570                         if (buttons[i].action == client_click)
1571                                 for (j = 0; j < LENGTH(modifiers); j++)
1572                                         XGrabButton(display, buttons[i].button,
1573                                             buttons[i].mask | modifiers[j],
1574                                             win->id, False, BUTTONMASK,
1575                                             GrabModeAsync, GrabModeSync, None,
1576                                             None);
1577         } else
1578                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
1579                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
1580 }
1581
1582 void
1583 expose(XEvent *e)
1584 {
1585         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1586 }
1587
1588 void
1589 keypress(XEvent *e)
1590 {
1591         unsigned int            i;
1592         KeySym                  keysym;
1593         XKeyEvent               *ev = &e->xkey;
1594
1595         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1596
1597         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1598         for (i = 0; i < LENGTH(keys); i++)
1599                 if (keysym == keys[i].keysym
1600                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1601                    && keys[i].func)
1602                         keys[i].func(root_to_region(ev->root),
1603                             &(keys[i].args));
1604 }
1605
1606 void
1607 buttonpress(XEvent *e)
1608 {
1609         XButtonPressedEvent     *ev = &e->xbutton;
1610
1611         struct ws_win           *win;
1612         int                     i, action;
1613
1614         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
1615
1616         action = root_click;
1617         if ((win = find_window(ev->window)) == NULL)
1618                 return;
1619         else {
1620                 focus_win(win);
1621                 action = client_click;
1622         }
1623
1624         for (i = 0; i < LENGTH(buttons); i++)
1625                 if (action == buttons[i].action && buttons[i].func &&
1626                     buttons[i].button == ev->button &&
1627                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
1628                         buttons[i].func(root_to_region(ev->root),
1629                         &buttons[i].args);
1630 }
1631
1632 void
1633 set_win_state(struct ws_win *win, long state)
1634 {
1635         long                    data[] = {state, None};
1636
1637         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
1638
1639         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
1640             (unsigned char *)data, 2);
1641 }
1642
1643 struct ws_win *
1644 manage_window(Window id)
1645 {
1646         Window                  trans;
1647         struct workspace        *ws;
1648         struct ws_win           *win;
1649         XClassHint              ch;
1650         int                     format;
1651         unsigned long           nitems, bytes;
1652         Atom                    ws_idx_atom = 0, type;
1653         unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
1654         struct swm_region       *r;
1655
1656         if ((win = find_window(id)) != NULL)
1657                         return (win);   /* already being managed */
1658
1659         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1660                 errx(1, "calloc: failed to allocate memory for new window");
1661
1662         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1663         if (ws_idx_atom)
1664                 XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
1665                     False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
1666
1667         XGetWindowAttributes(display, id, &win->wa);
1668         r = root_to_region(win->wa.root);
1669         /* If the window was managed before, put it in the same workspace */
1670         if (prop) {
1671                 int             ws_idx;
1672                 const char      *errstr;
1673
1674                 DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
1675                 ws_idx = strtonum(prop, 0, 9, &errstr);
1676                 if (errstr)
1677                         DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
1678                             errstr, prop);
1679                 ws = &r->s->ws[ws_idx];
1680         } else
1681                 ws = r->ws;
1682
1683         win->id = id;
1684         win->ws = ws;
1685         win->s = r->s;  /* this never changes */
1686         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
1687
1688         /* make new win focused */
1689         focus_win(win);
1690
1691         XGetTransientForHint(display, win->id, &trans);
1692         if (trans) {
1693                 win->transient = trans;
1694                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
1695                     (unsigned)win->id, win->transient);
1696         }
1697         win->g.w = win->wa.width;
1698         win->g.h = win->wa.height;
1699         win->g.x = win->wa.x;
1700         win->g.y = win->wa.y;
1701
1702         if (ws_idx_atom && prop == NULL &&
1703             snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
1704                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1705                     ws_idx_str);
1706                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1707                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1708         }
1709         XFree(prop);
1710
1711         /*
1712         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);
1713         */
1714
1715         /* XXX make this a table */
1716         bzero(&ch, sizeof ch);
1717         if (XGetClassHint(display, win->id, &ch)) {
1718                 /*fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name); */
1719                 if (!strcmp(ch.res_class, "MPlayer") && !strcmp(ch.res_name, "xv")) {
1720                         win->floating = 1;
1721                 }
1722                 if (ch.res_class)
1723                         XFree(ch.res_class);
1724                 if (ch.res_name)
1725                         XFree(ch.res_name);
1726         }
1727
1728         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
1729             PropertyChangeMask | StructureNotifyMask);
1730
1731         set_win_state(win, NormalState);
1732
1733         return (win);
1734 }
1735
1736 void
1737 configurerequest(XEvent *e)
1738 {
1739         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1740         struct ws_win           *win;
1741         int                     new = 0;
1742         XWindowChanges          wc;
1743
1744         if ((win = find_window(ev->window)) == NULL)
1745                 new = 1;
1746
1747         if (new) {
1748                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
1749                     ev->window);
1750                 /*
1751                 fprintf(stderr, "configurerequest: new window: %lu x %d y %d w %d h %d bw %d s %d sm %d\n",
1752                     ev->window, ev->x, ev->y, ev->width, ev->height, ev->border_width, ev->above, ev->detail);
1753                 */
1754                 bzero(&wc, sizeof wc);
1755                 wc.x = ev->x;
1756                 wc.y = ev->y;
1757                 wc.width = ev->width;
1758                 wc.height = ev->height;
1759                 wc.border_width = ev->border_width;
1760                 wc.sibling = ev->above;
1761                 wc.stack_mode = ev->detail;
1762                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
1763         } else {
1764                 /*
1765                 fprintf(stderr, "configurerequest: change window: %lu\n",
1766                     ev->window);
1767                 */
1768                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
1769                     ev->window);
1770                 if (win->floating) {
1771                         if (ev->value_mask & CWX)
1772                                 win->g.x = ev->x;
1773                         if (ev->value_mask & CWY)
1774                                 win->g.y = ev->y;
1775                         if (ev->value_mask & CWWidth)
1776                                 win->g.w = ev->width;
1777                         if (ev->value_mask & CWHeight)
1778                                 win->g.h = ev->height;
1779                         if (win->ws->r != NULL) {
1780                                 /* this seems to be full screen */
1781                                 if (win->g.w > WIDTH(win->ws->r)) {
1782                                         /* kill border */
1783                                         win->g.x -= 1;
1784                                         win->g.w += 1;
1785                                 }
1786                                 if (win->g.h > HEIGHT(win->ws->r)) {
1787                                         /* kill border */
1788                                         win->g.y -= 1;
1789                                         win->g.h += 1;
1790                                 }
1791                         }
1792                         if ((ev->value_mask & (CWX|CWY)) &&
1793                             !(ev->value_mask & (CWWidth|CWHeight)))
1794                                 config_win(win);
1795                         XMoveResizeWindow(display, win->id,
1796                             win->g.x, win->g.y, win->g.w, win->g.h);
1797                 } else
1798                         config_win(win);
1799         }
1800 }
1801
1802 void
1803 configurenotify(XEvent *e)
1804 {
1805         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1806             e->xconfigure.window);
1807 }
1808
1809 void
1810 destroynotify(XEvent *e)
1811 {
1812         struct ws_win           *win;
1813         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1814         struct workspace        *ws;
1815
1816         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1817
1818         if ((win = find_window(ev->window)) != NULL) {
1819                 ws = win->ws;
1820                 /* find a window to focus */
1821                 if (ws->focus == win)
1822                         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1823                 if (ws->focus == NULL)
1824                         ws->focus = TAILQ_FIRST(&ws->winlist);
1825                 if (ws->focus == win)
1826                         ws->focus = NULL;
1827                 if (cur_focus == win)
1828                         focus_win(ws->focus);
1829
1830                 TAILQ_REMOVE(&ws->winlist, win, entry);
1831                 set_win_state(win, WithdrawnState);
1832                 free(win);
1833         }
1834         stack();
1835 }
1836
1837 void
1838 enternotify(XEvent *e)
1839 {
1840         XCrossingEvent          *ev = &e->xcrossing;
1841         struct ws_win           *win;
1842
1843         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1844
1845         if (ignore_enter) {
1846                 /* eat event(r) to prevent autofocus */
1847                 ignore_enter--;
1848                 return;
1849         }
1850
1851         if ((win = find_window(ev->window)) != NULL)
1852                 focus_win(win);
1853 }
1854
1855 void
1856 focusin(XEvent *e)
1857 {
1858         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
1859 }
1860
1861 void
1862 mappingnotify(XEvent *e)
1863 {
1864         XMappingEvent           *ev = &e->xmapping;
1865
1866         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1867
1868         XRefreshKeyboardMapping(ev);
1869         if (ev->request == MappingKeyboard)
1870                 grabkeys();
1871 }
1872
1873 void
1874 maprequest(XEvent *e)
1875 {
1876         XMapRequestEvent        *ev = &e->xmaprequest;
1877         XWindowAttributes       wa;
1878
1879         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1880             e->xmaprequest.window);
1881
1882         if (!XGetWindowAttributes(display, ev->window, &wa))
1883                 return;
1884         if (wa.override_redirect)
1885                 return;
1886         manage_window(e->xmaprequest.window);
1887         stack();
1888 }
1889
1890 void
1891 propertynotify(XEvent *e)
1892 {
1893         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
1894             e->xproperty.window);
1895 }
1896
1897 void
1898 unmapnotify(XEvent *e)
1899 {
1900         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
1901 }
1902
1903 void
1904 visibilitynotify(XEvent *e)
1905 {
1906         int                     i;
1907         struct swm_region       *r;
1908
1909         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
1910             e->xvisibility.window);
1911         if (e->xvisibility.state == VisibilityUnobscured)
1912                 for (i = 0; i < ScreenCount(display); i++)
1913                         TAILQ_FOREACH(r, &screens[i].rl, entry)
1914                                 if (e->xvisibility.window == r->bar_window)
1915                                         bar_update();
1916 }
1917
1918 void                    (*handler[LASTEvent])(XEvent *) = {
1919                                 [Expose] = expose,
1920                                 [KeyPress] = keypress,
1921                                 [ButtonPress] = buttonpress,
1922                                 [ConfigureRequest] = configurerequest,
1923                                 [ConfigureNotify] = configurenotify,
1924                                 [DestroyNotify] = destroynotify,
1925                                 [EnterNotify] = enternotify,
1926                                 [FocusIn] = focusin,
1927                                 [MappingNotify] = mappingnotify,
1928                                 [MapRequest] = maprequest,
1929                                 [PropertyNotify] = propertynotify,
1930                                 [UnmapNotify] = unmapnotify,
1931                                 [VisibilityNotify] = visibilitynotify,
1932 };
1933
1934 int
1935 xerror_start(Display *d, XErrorEvent *ee)
1936 {
1937         other_wm = 1;
1938         return (-1);
1939 }
1940
1941 int
1942 xerror(Display *d, XErrorEvent *ee)
1943 {
1944         /* fprintf(stderr, "error: %p %p\n", display, ee); */
1945         return (-1);
1946 }
1947
1948 int
1949 active_wm(void)
1950 {
1951         other_wm = 0;
1952         xerrorxlib = XSetErrorHandler(xerror_start);
1953
1954         /* this causes an error if some other window manager is running */
1955         XSelectInput(display, DefaultRootWindow(display),
1956             SubstructureRedirectMask);
1957         XSync(display, False);
1958         if (other_wm)
1959                 return (1);
1960
1961         XSetErrorHandler(xerror);
1962         XSync(display, False);
1963         return (0);
1964 }
1965
1966 long
1967 getstate(Window w)
1968 {
1969         int                     format, status;
1970         long                    result = -1;
1971         unsigned char           *p = NULL;
1972         unsigned long           n, extra;
1973         Atom                    real;
1974
1975         astate = XInternAtom(display, "WM_STATE", False);
1976         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
1977             &real, &format, &n, &extra, (unsigned char **)&p);
1978         if (status != Success)
1979                 return (-1);
1980         if (n != 0)
1981                 result = *p;
1982         XFree(p);
1983         return (result);
1984 }
1985
1986 void
1987 new_region(struct swm_screen *s, struct workspace *ws,
1988     int x, int y, int w, int h)
1989 {
1990         struct swm_region       *r;
1991
1992         DNPRINTF(SWM_D_MISC, "new region on screen %d: %dx%d (%d, %d)\n",
1993              s->idx, x, y, w, h);
1994
1995         if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
1996                 errx(1, "calloc: failed to allocate memory for screen");
1997
1998         X(r) = x;
1999         Y(r) = y;
2000         WIDTH(r) = w;
2001         HEIGHT(r) = h;
2002         r->s = s;
2003         r->ws = ws;
2004         ws->r = r;
2005         TAILQ_INSERT_TAIL(&s->rl, r, entry);
2006         bar_setup(r);
2007 }
2008
2009 void
2010 setup_screens(void)
2011 {
2012 #ifdef SWM_XRR_HAS_CRTC
2013         XRRCrtcInfo             *ci;
2014         XRRScreenResources      *sr;
2015         int                     c;
2016 #endif /* SWM_XRR_HAS_CRTC */
2017         Window                  d1, d2, *wins = NULL;
2018         XWindowAttributes       wa;
2019         struct swm_region       *r;
2020         unsigned int            no;
2021         int                     errorbase, major, minor;
2022         int                     ncrtc = 0, w = 0;
2023         int                     i, j, k;
2024         struct workspace        *ws;
2025         int                     ws_idx_atom;
2026
2027
2028         if ((screens = calloc(ScreenCount(display),
2029              sizeof(struct swm_screen))) == NULL)
2030                 errx(1, "calloc: screens");
2031
2032         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2033
2034
2035         /* map physical screens */
2036         for (i = 0; i < ScreenCount(display); i++) {
2037                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2038                 screens[i].idx = i;
2039                 TAILQ_INIT(&screens[i].rl);
2040                 screens[i].root = RootWindow(display, i);
2041
2042                 /* set default colors */
2043                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2044                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2045                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2046                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2047                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2048
2049                 /* init all workspaces */
2050                 for (j = 0; j < SWM_WS_MAX; j++) {
2051                         ws = &screens[i].ws[j];
2052                         ws->idx = j;
2053                         ws->restack = 1;
2054                         ws->focus = NULL;
2055                         ws->r = NULL;
2056                         TAILQ_INIT(&ws->winlist);
2057
2058                         for (k = 0; layouts[k].l_stack != NULL; k++)
2059                                 if (layouts[k].l_config != NULL)
2060                                         layouts[k].l_config(ws,
2061                                             SWM_ARG_ID_STACKINIT);
2062                         ws->cur_layout = &layouts[0];
2063                 }
2064
2065                 /* map virtual screens onto physical screens */
2066                 screens[i].xrandr_support = XRRQueryExtension(display,
2067                     &xrandr_eventbase, &errorbase);
2068                 if (screens[i].xrandr_support)
2069                         if (XRRQueryVersion(display, &major, &minor) &&
2070                             major < 1)
2071                                 screens[i].xrandr_support = 0;
2072
2073 #if 0   /* not ready for dynamic screen changes */
2074                 if (screens[i].xrandr_support)
2075                         XRRSelectInput(display,
2076                             screens[r->s].root,
2077                             RRScreenChangeNotifyMask);
2078 #endif
2079
2080                 /* grab existing windows (before we build the bars)*/
2081                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2082                         continue;
2083
2084 #ifdef SWM_XRR_HAS_CRTC
2085                 sr = XRRGetScreenResources(display, screens[i].root);
2086                 if (sr == NULL)
2087                         new_region(&screens[i], &screens[i].ws[w],
2088                             0, 0, DisplayWidth(display, i),
2089                             DisplayHeight(display, i));
2090                 else
2091                         ncrtc = sr->ncrtc;
2092
2093                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2094                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2095                         if (ci->noutput == 0)
2096                                 continue;
2097
2098                         if (ci != NULL && ci->mode == None)
2099                                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2100                                     DisplayWidth(display, i),
2101                                     DisplayHeight(display, i));
2102                         else
2103                                 new_region(&screens[i], &screens[i].ws[w],
2104                                     ci->x, ci->y, ci->width, ci->height);
2105                         w++;
2106                 }
2107                 if (ci)
2108                         XRRFreeCrtcInfo(ci);
2109                 XRRFreeScreenResources(sr);
2110 #else
2111                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2112                     DisplayWidth(display, i),
2113                     DisplayHeight(display, i));
2114 #endif /* SWM_XRR_HAS_CRTC */
2115
2116                 /* attach windows to a region */
2117                 /* normal windows */
2118                 if ((r = TAILQ_FIRST(&screens[i].rl)) == NULL)
2119                         errx(1, "no regions on screen %d", i);
2120
2121                 for (i = 0; i < no; i++) {
2122                         XGetWindowAttributes(display, wins[i], &wa);
2123                         if (!XGetWindowAttributes(display, wins[i], &wa) ||
2124                             wa.override_redirect ||
2125                             XGetTransientForHint(display, wins[i], &d1))
2126                                 continue;
2127
2128                         if (wa.map_state == IsViewable ||
2129                             getstate(wins[i]) == NormalState)
2130                                 manage_window(wins[i]);
2131                 }
2132                 /* transient windows */
2133                 for (i = 0; i < no; i++) {
2134                         if (!XGetWindowAttributes(display, wins[i], &wa))
2135                                 continue;
2136
2137                         if (XGetTransientForHint(display, wins[i], &d1) &&
2138                             (wa.map_state == IsViewable || getstate(wins[i]) ==
2139                             NormalState))
2140                                 manage_window(wins[i]);
2141                 }
2142                 if (wins) {
2143                         XFree(wins);
2144                         wins = NULL;
2145                 }
2146         }
2147 }
2148
2149 int
2150 main(int argc, char *argv[])
2151 {
2152         struct passwd           *pwd;
2153         char                    conf[PATH_MAX], *cfile = NULL;
2154         struct stat             sb;
2155         XEvent                  e;
2156         int                     xfd;
2157         fd_set                  rd;
2158
2159         start_argv = argv;
2160         fprintf(stderr, "Welcome to scrotwm V%s\n", SWM_VERSION);
2161         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2162                 warnx("no locale support");
2163
2164         if (!(display = XOpenDisplay(0)))
2165                 errx(1, "can not open display");
2166
2167         if (active_wm())
2168                 errx(1, "other wm running");
2169
2170         astate = XInternAtom(display, "WM_STATE", False);
2171
2172         /* look for local and global conf file */
2173         pwd = getpwuid(getuid());
2174         if (pwd == NULL)
2175                 errx(1, "invalid user %d", getuid());
2176
2177         setup_screens();
2178
2179         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2180         if (stat(conf, &sb) != -1) {
2181                 if (S_ISREG(sb.st_mode))
2182                         cfile = conf;
2183         } else {
2184                 /* try global conf file */
2185                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2186                 if (!stat(conf, &sb))
2187                         if (S_ISREG(sb.st_mode))
2188                                 cfile = conf;
2189         }
2190         if (cfile)
2191                 conf_load(cfile);
2192         bar_refresh();
2193
2194         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2195
2196         grabkeys();
2197         stack();
2198
2199         xfd = ConnectionNumber(display);
2200         while (running) {
2201                 FD_ZERO(&rd);
2202                 FD_SET(xfd, &rd);
2203                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2204                         if (errno != EINTR)
2205                                 errx(1, "select failed");
2206                 if (bar_alarm) {
2207                         bar_alarm = 0;
2208                         bar_update();
2209                 }
2210                 while(XPending(display)) {
2211                         XNextEvent(display, &e);
2212                         if (handler[e.type])
2213                                 handler[e.type](&e);
2214                 }
2215         }
2216
2217         XCloseDisplay(display);
2218
2219         return (0);
2220 }