scrotwm.c

   1 /* $scrotwm$ */
   2 /*
   3  * Copyright (c) 2009 Marco Peereboom <marco@peereboom.us>
   4  * Copyright (c) 2009 Ryan McBride <mcbride@countersiege.com>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 /*
  19  * Much code and ideas taken from dwm under the following license:
  20  * MIT/X Consortium License
  21  *
  22  * 2006-2008 Anselm R Garbe <garbeam at gmail dot com>
  23  * 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
  24  * 2006-2007 Jukka Salmi <jukka at salmi dot ch>
  25  * 2007 Premysl Hruby <dfenze at gmail dot com>
  26  * 2007 Szabolcs Nagy <nszabolcs at gmail dot com>
  27  * 2007 Christof Musik <christof at sendfax dot de>
  28  * 2007-2008 Enno Gottox Boland <gottox at s01 dot de>
  29  * 2007-2008 Peter Hartlich <sgkkr at hartlich dot com>
  30  * 2008 Martin Hurton <martin dot hurton at gmail dot com>
  31  *
  32  * Permission is hereby granted, free of charge, to any person obtaining a
  33  * copy of this software and associated documentation files (the "Software"),
  34  * to deal in the Software without restriction, including without limitation
  35  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  36  * and/or sell copies of the Software, and to permit persons to whom the
  37  * Software is furnished to do so, subject to the following conditions:
  38  *
  39  * The above copyright notice and this permission notice shall be included in
  40  * all copies or substantial portions of the Software.
  41  *
  42  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  43  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  44  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  45  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  46  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  47  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  48  * DEALINGS IN THE SOFTWARE.
  49  */
  50
  51 #define SWM_VERSION     "0.5"
  52
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <err.h>
  56 #include <errno.h>
  57 #include <locale.h>
  58 #include <unistd.h>
  59 #include <time.h>
  60 #include <signal.h>
  61 #include <string.h>
  62 #include <util.h>
  63 #include <pwd.h>
  64 #include <ctype.h>
  65
  66 #include <sys/types.h>
  67 #include <sys/time.h>
  68 #include <sys/stat.h>
  69 #include <sys/wait.h>
  70 #include <sys/queue.h>
  71 #include <sys/param.h>
  72 #include <sys/select.h>
  73
  74 #include <X11/cursorfont.h>
  75 #include <X11/keysym.h>
  76 #include <X11/Xatom.h>
  77 #include <X11/Xlib.h>
  78 #include <X11/Xproto.h>
  79 #include <X11/Xutil.h>
  80 #include <X11/extensions/Xrandr.h>
  81
  82 #if RANDR_MAJOR < 1
  83 #  error XRandR versions less than 1.0 are not supported
  84 #endif
  85
  86 #if RANDR_MAJOR >= 1
  87 #if RANDR_MINOR >= 2
  88 #define SWM_XRR_HAS_CRTC
  89 #endif
  90 #endif
  91
  92 /* #define SWM_DEBUG */
  93 #ifdef SWM_DEBUG
  94 #define DPRINTF(x...)           do { if (swm_debug) fprintf(stderr, x); } while(0)
  95 #define DNPRINTF(n,x...)        do { if (swm_debug & n) fprintf(stderr, x); } while(0)
  96 #define SWM_D_MISC              0x0001
  97 #define SWM_D_EVENT             0x0002
  98 #define SWM_D_WS                0x0004
  99 #define SWM_D_FOCUS             0x0008
 100 #define SWM_D_MOVE              0x0010
 101 #define SWM_D_STACK             0x0020
 102
 103 u_int32_t               swm_debug = 0
 104                             | SWM_D_MISC
 105                             | SWM_D_EVENT
 106                             | SWM_D_WS
 107                             | SWM_D_FOCUS
 108                             | SWM_D_MOVE
 109                             | SWM_D_STACK
 110                             ;
 111 #else
 112 #define DPRINTF(x...)
 113 #define DNPRINTF(n,x...)
 114 #endif
 115
 116 #define LENGTH(x)               (sizeof x / sizeof x[0])
 117 #define MODKEY                  Mod1Mask
 118 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
 119
 120 #define X(r)            (r)->g.x
 121 #define Y(r)            (r)->g.y
 122 #define WIDTH(r)        (r)->g.w
 123 #define HEIGHT(r)       (r)->g.h
 124
 125 char                    **start_argv;
 126 Atom                    astate;
 127 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 128 int                     other_wm;
 129 int                     running = 1;
 130 int                     xrandr_eventbase;
 131 int                     ignore_enter = 0;
 132 unsigned int            numlockmask = 0;
 133 Display                 *display;
 134
 135 int                     cycle_empty = 0;
 136 int                     cycle_visible = 0;
 137
 138 /* dialog windows */
 139 double                  dialog_ratio = .6;
 140 /* status bar */
 141 #define SWM_BAR_MAX     (128)
 142 sig_atomic_t            bar_alarm = 0;
 143 int                     bar_enabled = 1;
 144 int                     bar_verbose = 1;
 145 int                     bar_height = 0;
 146 GC                      bar_gc;
 147 XGCValues               bar_gcv;
 148 XFontStruct             *bar_fs;
 149 char                    *bar_fonts[] = {
 150                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 151                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 152                             NULL
 153 };
 154
 155 /* terminal + args */
 156 char                            *spawn_term[] = { "xterm", NULL };
 157 char                            *spawn_menu[] = { "dmenu_run", NULL };
 158
 159 /* layout manager data */
 160 struct swm_geometry {
 161         int                     x;
 162         int                     y;
 163         int                     w;
 164         int                     h;
 165 };
 166
 167 struct swm_screen;
 168 struct workspace;
 169
 170 /* virtual "screens" */
 171 struct swm_region {
 172         TAILQ_ENTRY(swm_region) entry;
 173         struct swm_geometry     g;
 174         Window                  bar_window;
 175         struct workspace        *ws;    /* current workspace on this region */
 176         struct swm_screen       *s;     /* screen idx */
 177 };
 178 TAILQ_HEAD(swm_region_list, swm_region);
 179
 180
 181 struct ws_win {
 182         TAILQ_ENTRY(ws_win)     entry;
 183         Window                  id;
 184         struct swm_geometry     g;
 185         int                     got_focus;
 186         int                     floating;
 187         int                     transient;
 188         struct workspace        *ws;    /* always valid */
 189         struct swm_screen       *s;     /* always valid, never changes */
 190         XWindowAttributes       wa;
 191 };
 192 TAILQ_HEAD(ws_win_list, ws_win);
 193
 194 /* layout handlers */
 195 void    stack(void);
 196 void    vertical_config(struct workspace *, int);
 197 void    vertical_stack(struct workspace *, struct swm_geometry *);
 198 void    horizontal_config(struct workspace *, int);
 199 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 200 void    max_stack(struct workspace *, struct swm_geometry *);
 201
 202 struct layout {
 203         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 204         void            (*l_config)(struct workspace *, int);
 205 } layouts[] =  {
 206         /* stack,               configure */
 207         { vertical_stack,       vertical_config},
 208         { horizontal_stack,     horizontal_config},
 209         { max_stack,            NULL},
 210         { NULL,                 NULL},
 211 };
 212
 213 #define SWM_H_SLICE             (32)
 214 #define SWM_V_SLICE             (32)
 215
 216 /* define work spaces */
 217 struct workspace {
 218         int                     idx;            /* workspace index */
 219         int                     restack;        /* restack on switch */
 220         struct layout           *cur_layout;    /* current layout handlers */
 221         struct ws_win           *focus;         /* may be NULL */
 222         struct swm_region       *r;             /* may be NULL */
 223         struct ws_win_list      winlist;        /* list of windows in ws */
 224
 225         /* stacker state */
 226         struct {
 227                                 int horizontal_msize;
 228                                 int horizontal_mwin;
 229                                 int vertical_msize;
 230                                 int vertical_mwin;
 231         } l_state;
 232 };
 233
 234 /* physical screen mapping */
 235 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 236 struct swm_screen {
 237         int                     idx;            /* screen index */
 238         struct swm_region_list  rl;     /* list of regions on this screen */
 239         Window                  root;
 240         int                     xrandr_support;
 241         struct workspace        ws[SWM_WS_MAX];
 242
 243         /* colors */
 244         unsigned long           bar_border;
 245         unsigned long           bar_color;
 246         unsigned long           bar_font_color;
 247         unsigned long           color_focus;            /* XXX should this be per ws? */
 248         unsigned long           color_unfocus;
 249 };
 250 struct swm_screen       *screens;
 251 int                     num_screens;
 252 Window rootclick = 0;
 253
 254 struct ws_win           *cur_focus = NULL;
 255
 256 /* args to functions */
 257 union arg {
 258         int                     id;
 259 #define SWM_ARG_ID_FOCUSNEXT    (0)
 260 #define SWM_ARG_ID_FOCUSPREV    (1)
 261 #define SWM_ARG_ID_FOCUSMAIN    (2)
 262 #define SWM_ARG_ID_SWAPNEXT     (3)
 263 #define SWM_ARG_ID_SWAPPREV     (4)
 264 #define SWM_ARG_ID_SWAPMAIN     (5)
 265 #define SWM_ARG_ID_MASTERSHRINK (6)
 266 #define SWM_ARG_ID_MASTERGROW   (7)
 267 #define SWM_ARG_ID_MASTERADD    (8)
 268 #define SWM_ARG_ID_MASTERDEL    (9)
 269 #define SWM_ARG_ID_STACKRESET   (10)
 270 #define SWM_ARG_ID_STACKINIT    (11)
 271 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 272 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 273         char                    **argv;
 274 };
 275
 276 unsigned long
 277 name_to_color(char *colorname)
 278 {
 279         Colormap                cmap;
 280         Status                  status;
 281         XColor                  screen_def, exact_def;
 282         unsigned long           result = 0;
 283         char                    cname[32] = "#";
 284
 285         cmap = DefaultColormap(display, screens[0].idx);
 286         status = XAllocNamedColor(display, cmap, colorname,
 287             &screen_def, &exact_def);
 288         if (!status) {
 289                 strlcat(cname, colorname + 2, sizeof cname - 1);
 290                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 291                     &exact_def);
 292         }
 293         if (status)
 294                 result = screen_def.pixel;
 295         else
 296                 fprintf(stderr, "color '%s' not found.\n", colorname);
 297
 298         return (result);
 299 }
 300
 301 int
 302 varmatch(char *var, char *name, int *index)
 303 {
 304         char                    *p, buf[5];
 305         int                     i;
 306
 307         i = strncmp(var, name, 255);
 308         if (index == NULL)
 309                 return (i);
 310
 311         *index = -1;
 312         if (i <= 0)
 313                 return (i);
 314         p = var + strlen(name);
 315         if (*p++ != '[')
 316                 return (i);
 317         bzero(buf, sizeof buf);
 318         i = 0;
 319         while (isdigit(*p) && i < sizeof buf)
 320                 buf[i++] = *p++;
 321         if (i == 0 || i >= sizeof buf || *p != ']')
 322                 return (1);
 323         *index = strtonum(buf, 0, 99, NULL);
 324         return (0);
 325 }
 326
 327 /* conf file stuff */
 328 #define SWM_CONF_WS     "\n= \t"
 329 #define SWM_CONF_FILE   "scrotwm.conf"
 330 int
 331 conf_load(char *filename)
 332 {
 333         FILE                    *config;
 334         char                    *line, *cp, *var, *val;
 335         size_t                  len, lineno = 0;
 336         int                     i, sc;
 337
 338         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 339
 340         if (filename == NULL)
 341                 return (1);
 342
 343         if ((config = fopen(filename, "r")) == NULL)
 344                 return (1);
 345
 346         for (sc = ScreenCount(display);;) {
 347                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 348                         if (feof(config))
 349                                 break;
 350                 cp = line;
 351                 cp += (long)strspn(cp, SWM_CONF_WS);
 352                 if (cp[0] == '\0') {
 353                         /* empty line */
 354                         free(line);
 355                         continue;
 356                 }
 357                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 358                         break;
 359                 cp += (long)strspn(cp, SWM_CONF_WS);
 360                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 361                         break;
 362
 363                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 364                 switch (var[0]) {
 365                 case 'b':
 366                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 367                                 bar_enabled = atoi(val);
 368                         else if (!varmatch(var, "bar_border", &i))
 369                                 if (i > 0 && i <= sc)
 370                                         screens[i - 1].bar_border =
 371                                             name_to_color(val);
 372                                 else if (i == -1)
 373                                         for (i = 0; i < sc; i++)
 374                                                 screens[i].bar_border =
 375                                                     name_to_color(val);
 376                                  else
 377                                         goto badidx;
 378                         else if (!varmatch(var, "bar_color", &i))
 379                                 if (i > 0 && i <= sc)
 380                                         screens[i - 1].bar_color =
 381                                             name_to_color(val);
 382                                 else if (i == -1)
 383                                         for (i = 0; i < sc; i++)
 384                                                 screens[i].bar_color =
 385                                                     name_to_color(val);
 386                                 else
 387                                         goto badidx;
 388                         else if (!varmatch(var, "bar_font_color", &i))
 389                                 if (i > 0 && i <= sc)
 390                                         screens[i - 1].bar_font_color =
 391                                                 name_to_color(val);
 392                                 else if (i == -1)
 393                                         for (i = 0; i < sc; i++)
 394                                                 screens[i].bar_font_color =
 395                                                     name_to_color(val);
 396                                 else
 397                                         goto badidx;
 398
 399                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 400                                 asprintf(&bar_fonts[0], "%s", val);
 401                         else
 402                                 goto bad;
 403                         break;
 404
 405                 case 'c':
 406                         if (!varmatch(var, "color_focus", &i))
 407                                 if (i > 0 && i <= sc)
 408                                         screens[i - 1].color_focus =
 409                                             name_to_color(val);
 410                                 else if (i == -1)
 411                                         for (i = 0; i < sc; i++)
 412                                                 screens[i].color_focus =
 413                                                     name_to_color(val);
 414                                 else
 415                                         goto badidx;
 416                         else if (!varmatch(var, "color_unfocus", &i))
 417                                 if (i > 0 && i <= sc)
 418                                         screens[i - 1].color_unfocus =
 419                                             name_to_color(val);
 420                                 else if (i == -1)
 421                                         for (i = 0; i < sc; i++)
 422                                                 screens[i].color_unfocus =
 423                                                     name_to_color(val);
 424                                 else
 425                                         goto badidx;
 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 bad:
 457         errx(1, "invalid conf file entry: %s=%s", var, val);
 458 badidx:
 459         errx(1, "invalid screen index: %s out of bounds", var);
 460 }
 461
 462 void
 463 bar_print(struct swm_region *r, char *s)
 464 {
 465         XClearWindow(display, r->bar_window);
 466         XSetForeground(display, bar_gc, r->s->bar_font_color);
 467         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 468             strlen(s));
 469 }
 470
 471 void
 472 bar_update(void)
 473 {
 474         time_t                  tmt;
 475         struct tm               tm;
 476         struct swm_region       *r;
 477         int                     i, x;
 478         char                    s[SWM_BAR_MAX];
 479         char                    e[SWM_BAR_MAX];
 480
 481         if (bar_enabled == 0)
 482                 return;
 483
 484         time(&tmt);
 485         localtime_r(&tmt, &tm);
 486         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 487         for (i = 0; i < ScreenCount(display); i++) {
 488                 x = 1;
 489                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 490                         snprintf(e, sizeof e, "%s     %d:%d",
 491                             s, x++, r->ws->idx + 1);
 492                         bar_print(r, e);
 493                 }
 494         }
 495         XSync(display, False);
 496         alarm(60);
 497 }
 498
 499 void
 500 bar_signal(int sig)
 501 {
 502         bar_alarm = 1;
 503 }
 504
 505 void
 506 bar_toggle(struct swm_region *r, union arg *args)
 507 {
 508         struct swm_region       *tmpr;
 509         int                     i, j, sc = ScreenCount(display);
 510
 511         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 512
 513         if (bar_enabled) {
 514                 for (i = 0; i < sc; i++)
 515                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 516                                 XUnmapWindow(display, tmpr->bar_window);
 517         } else {
 518                 for (i = 0; i < sc; i++)
 519                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 520                                 XMapRaised(display, tmpr->bar_window);
 521         }
 522         bar_enabled = !bar_enabled;
 523         XSync(display, False);
 524         for (i = 0; i < sc; i++)
 525                 for (j = 0; j < SWM_WS_MAX; j++)
 526                         screens[i].ws[j].restack = 1;
 527
 528         stack();
 529         /* must be after stack */
 530         for (i = 0; i < sc; i++)
 531                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 532                         bar_update();
 533 }
 534
 535 void
 536 bar_setup(struct swm_region *r)
 537 {
 538         int                     i;
 539
 540         for (i = 0; bar_fonts[i] != NULL; i++) {
 541                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 542                 if (bar_fs)
 543                         break;
 544         }
 545         if (bar_fonts[i] == NULL)
 546                         errx(1, "couldn't load font");
 547         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 548
 549         r->bar_window = XCreateSimpleWindow(display,
 550             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 551             1, r->s->bar_border, r->s->bar_color);
 552         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 553         XSetFont(display, bar_gc, bar_fs->fid);
 554         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 555         if (bar_enabled)
 556                 XMapRaised(display, r->bar_window);
 557         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 558
 559         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 560                 err(1, "could not install bar_signal");
 561         bar_update();
 562 }
 563
 564 void
 565 bar_refresh(void)
 566 {
 567         XSetWindowAttributes    wa;
 568         struct swm_region       *r;
 569         int                     i;
 570
 571         bzero(&wa, sizeof wa);
 572         for (i = 0; i < ScreenCount(display); i++)
 573                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 574                         wa.border_pixel = screens[i].bar_border;
 575                         wa.background_pixel = screens[i].bar_color;
 576                         XChangeWindowAttributes(display, r->bar_window,
 577                             CWBackPixel | CWBorderPixel, &wa);
 578                 }
 579         bar_update();
 580 }
 581
 582 void
 583 config_win(struct ws_win *win)
 584 {
 585         XConfigureEvent         ce;
 586
 587         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 588             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 589         ce.type = ConfigureNotify;
 590         ce.display = display;
 591         ce.event = win->id;
 592         ce.window = win->id;
 593         ce.x = win->g.x;
 594         ce.y = win->g.y;
 595         ce.width = win->g.w;
 596         ce.height = win->g.h;
 597         ce.border_width = 1; /* XXX store this! */
 598         ce.above = None;
 599         ce.override_redirect = False;
 600         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 601 }
 602
 603 int
 604 count_win(struct workspace *ws, int count_transient)
 605 {
 606         struct ws_win           *win;
 607         int                     count = 0;
 608
 609         TAILQ_FOREACH(win, &ws->winlist, entry) {
 610                 if (count_transient == 0 && win->floating)
 611                         continue;
 612                 if (count_transient == 0 && win->transient)
 613                         continue;
 614                 count++;
 615         }
 616         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 617
 618         return (count);
 619 }
 620
 621 void
 622 quit(struct swm_region *r, union arg *args)
 623 {
 624         DNPRINTF(SWM_D_MISC, "quit\n");
 625         running = 0;
 626 }
 627
 628 void
 629 restart(struct swm_region *r, union arg *args)
 630 {
 631         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 632
 633         /* disable alarm because the following code may not be interrupted */
 634         alarm(0);
 635         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 636                 errx(1, "can't disable alarm");
 637
 638         XCloseDisplay(display);
 639         execvp(start_argv[0], start_argv);
 640         fprintf(stderr, "execvp failed\n");
 641         perror(" failed");
 642         quit(NULL, NULL);
 643 }
 644
 645 struct swm_region *
 646 root_to_region(Window root)
 647 {
 648         struct swm_region       *r;
 649         Window                  rr, cr;
 650         int                     i, x, y, wx, wy;
 651         unsigned int            mask;
 652
 653         for (i = 0; i < ScreenCount(display); i++)
 654                 if (screens[i].root == root)
 655                         break;
 656
 657         if (rootclick != root && /* if root was just clicked in, use cursor */
 658             cur_focus && cur_focus->ws->r && cur_focus->s == &screens[i])
 659                 r = cur_focus->ws->r;
 660         else {
 661                 if (XQueryPointer(display, screens[i].root,
 662                     &rr, &cr, &x, &y, &wx, &wy, &mask) == False) {
 663                         r = TAILQ_FIRST(&screens[i].rl);
 664                 } else {
 665                         TAILQ_FOREACH(r, &screens[i].rl, entry) {
 666                                 if (x > X(r) && x < X(r) + WIDTH(r) &&
 667                                     y > Y(r) && y < Y(r) + HEIGHT(r))
 668                                         break;
 669                         }
 670
 671                         if (r == NULL)
 672                                 r = TAILQ_FIRST(&screens[i].rl);
 673                 }
 674         }
 675         return (r);
 676 }
 677
 678 struct ws_win *
 679 find_window(Window id)
 680 {
 681         struct ws_win           *win;
 682         int                     i, j;
 683
 684         for (i = 0; i < ScreenCount(display); i++)
 685                 for (j = 0; j < SWM_WS_MAX; j++)
 686                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 687                                 if (id == win->id)
 688                                         return (win);
 689         return (NULL);
 690 }
 691
 692 void
 693 spawn(struct swm_region *r, union arg *args)
 694 {
 695         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 696         /*
 697          * The double-fork construct avoids zombie processes and keeps the code
 698          * clean from stupid signal handlers.
 699          */
 700         if (fork() == 0) {
 701                 if (fork() == 0) {
 702                         if (display)
 703                                 close(ConnectionNumber(display));
 704                         setsid();
 705                         execvp(args->argv[0], args->argv);
 706                         fprintf(stderr, "execvp failed\n");
 707                         perror(" failed");
 708                 }
 709                 exit(0);
 710         }
 711         wait(0);
 712 }
 713
 714 void
 715 unfocus_all(void)
 716 {
 717         struct ws_win           *win;
 718         int                     i, j;
 719
 720         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
 721
 722         for (i = 0; i < ScreenCount(display); i++)
 723                 for (j = 0; j < SWM_WS_MAX; j++)
 724                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
 725                                 if (win->ws->r == NULL)
 726                                         continue;
 727                                 XSetWindowBorder(display, win->id,
 728                                     win->ws->r->s->color_unfocus);
 729                                 win->got_focus = 0;
 730                                 win->ws->focus = NULL;
 731                                 cur_focus = NULL;
 732                         }
 733 }
 734
 735 void
 736 focus_win(struct ws_win *win)
 737 {
 738         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
 739
 740         if (win == NULL)
 741                 return;
 742
 743         rootclick = 0;
 744         unfocus_all();
 745         win->ws->focus = win;
 746         if (win->ws->r != NULL) {
 747                 cur_focus = win;
 748                 if (!win->got_focus)
 749                         XSetWindowBorder(display, win->id,
 750                             win->ws->r->s->color_focus);
 751                 win->got_focus = 1;
 752                 XSetInputFocus(display, win->id,
 753                     RevertToPointerRoot, CurrentTime);
 754         }
 755 }
 756
 757 void
 758 switchws(struct swm_region *r, union arg *args)
 759 {
 760         int                     wsid = args->id;
 761         struct swm_region       *this_r, *other_r;
 762         struct ws_win           *win;
 763         struct workspace        *new_ws, *old_ws;
 764
 765         this_r = r;
 766         old_ws = this_r->ws;
 767         new_ws = &this_r->s->ws[wsid];
 768
 769         DNPRINTF(SWM_D_WS, "switchws screen %d region %dx%d+%d+%d: "
 770             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
 771             old_ws->idx, wsid);
 772
 773         if (new_ws == old_ws)
 774                 return;
 775
 776         other_r = new_ws->r;
 777         if (!other_r) {
 778                 /* if the other workspace is hidden, switch windows */
 779                 /* map new window first to prevent ugly blinking */
 780                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
 781                         XMapRaised(display, win->id);
 782
 783                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
 784                         XUnmapWindow(display, win->id);
 785
 786                 old_ws->r = NULL;
 787                 old_ws->restack = 1;
 788         } else {
 789                 other_r->ws = old_ws;
 790                 old_ws->r = other_r;
 791         }
 792         this_r->ws = new_ws;
 793         new_ws->r = this_r;
 794
 795         ignore_enter = 1;
 796         /* set focus */
 797         if (new_ws->focus)
 798                 focus_win(new_ws->focus);
 799         stack();
 800         bar_update();
 801 }
 802
 803 void
 804 cyclews(struct swm_region *r, union arg *args)
 805 {
 806         union                   arg a;
 807         struct swm_screen       *s = r->s;
 808
 809         DNPRINTF(SWM_D_WS, "cyclews id %d "
 810             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 811             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 812
 813         a.id = r->ws->idx;
 814
 815         do {
 816                 switch (args->id) {
 817                 case SWM_ARG_ID_CYCLEWS_UP:
 818                         if (a.id < SWM_WS_MAX - 1)
 819                                 a.id++;
 820                         else
 821                                 a.id = 0;
 822                         break;
 823                 case SWM_ARG_ID_CYCLEWS_DOWN:
 824                         if (a.id > 0)
 825                                 a.id--;
 826                         else
 827                                 a.id = SWM_WS_MAX - 1;
 828                         break;
 829                 default:
 830                         return;
 831                 };
 832
 833                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
 834                         continue;
 835                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
 836                         continue;
 837
 838                 switchws(r, &a);
 839         } while (a.id != r->ws->idx);
 840 }
 841
 842 void
 843 swapwin(struct swm_region *r, union arg *args)
 844 {
 845         struct ws_win           *target;
 846         struct ws_win_list      *wl;
 847
 848
 849         DNPRINTF(SWM_D_WS, "swapwin id %d "
 850             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 851             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 852         if (cur_focus == NULL)
 853                 return;
 854
 855         wl = &cur_focus->ws->winlist;
 856
 857         switch (args->id) {
 858         case SWM_ARG_ID_SWAPPREV:
 859                 target = TAILQ_PREV(cur_focus, ws_win_list, entry);
 860                 TAILQ_REMOVE(wl, cur_focus, entry);
 861                 if (target == NULL)
 862                         TAILQ_INSERT_TAIL(wl, cur_focus, entry);
 863                 else
 864                         TAILQ_INSERT_BEFORE(target, cur_focus, entry);
 865                 break;
 866         case SWM_ARG_ID_SWAPNEXT:
 867                 target = TAILQ_NEXT(cur_focus, entry);
 868                 TAILQ_REMOVE(wl, cur_focus, entry);
 869                 if (target == NULL)
 870                         TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 871                 else
 872                         TAILQ_INSERT_AFTER(wl, target, cur_focus, entry);
 873                 break;
 874         case SWM_ARG_ID_SWAPMAIN:
 875                 target = TAILQ_FIRST(wl);
 876                 if (target == cur_focus)
 877                         return;
 878                 TAILQ_REMOVE(wl, target, entry);
 879                 TAILQ_INSERT_BEFORE(cur_focus, target, entry);
 880                 TAILQ_REMOVE(wl, cur_focus, entry);
 881                 TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 882                 break;
 883         default:
 884                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
 885                 return;
 886         }
 887
 888         ignore_enter = 2;
 889         stack();
 890 }
 891
 892 void
 893 focus(struct swm_region *r, union arg *args)
 894 {
 895         struct ws_win           *winfocus, *winlostfocus;
 896         struct ws_win_list      *wl;
 897
 898         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
 899         if (cur_focus == NULL)
 900                 return;
 901
 902         wl = &cur_focus->ws->winlist;
 903
 904         winlostfocus = cur_focus;
 905
 906         switch (args->id) {
 907         case SWM_ARG_ID_FOCUSPREV:
 908                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
 909                 if (winfocus == NULL)
 910                         winfocus = TAILQ_LAST(wl, ws_win_list);
 911                 break;
 912
 913         case SWM_ARG_ID_FOCUSNEXT:
 914                 winfocus = TAILQ_NEXT(cur_focus, entry);
 915                 if (winfocus == NULL)
 916                         winfocus = TAILQ_FIRST(wl);
 917                 break;
 918
 919         case SWM_ARG_ID_FOCUSMAIN:
 920                 winfocus = TAILQ_FIRST(wl);
 921                 break;
 922
 923         default:
 924                 return;
 925         }
 926
 927         if (winfocus == winlostfocus)
 928                 return;
 929
 930         focus_win(winfocus);
 931         XSync(display, False);
 932 }
 933
 934 void
 935 cycle_layout(struct swm_region *r, union arg *args)
 936 {
 937         struct workspace        *ws = r->ws;
 938
 939         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
 940
 941         ws->cur_layout++;
 942         if (ws->cur_layout->l_stack == NULL)
 943                 ws->cur_layout = &layouts[0];
 944         ignore_enter = 1;
 945
 946         stack();
 947 }
 948
 949 void
 950 stack_config(struct swm_region *r, union arg *args)
 951 {
 952         struct workspace        *ws = r->ws;
 953
 954         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
 955             args->id, ws->idx);
 956
 957         if (ws->cur_layout->l_config != NULL)
 958                 ws->cur_layout->l_config(ws, args->id);
 959
 960         if (args->id != SWM_ARG_ID_STACKINIT);
 961                 stack();
 962 }
 963
 964 void
 965 stack(void) {
 966         struct swm_geometry     g;
 967         struct swm_region       *r;
 968         int                     i, j;
 969
 970         DNPRINTF(SWM_D_STACK, "stack\n");
 971
 972         for (i = 0; i < ScreenCount(display); i++) {
 973                 j = 0;
 974                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 975                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
 976                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
 977
 978                         /* start with screen geometry, adjust for bar */
 979                         g = r->g;
 980                         g.w -= 2;
 981                         g.h -= 2;
 982                         if (bar_enabled) {
 983                                 g.y += bar_height;
 984                                 g.h -= bar_height;
 985                         }
 986
 987                         r->ws->restack = 0;
 988                         r->ws->cur_layout->l_stack(r->ws, &g);
 989                 }
 990         }
 991         XSync(display, False);
 992 }
 993
 994 void
 995 stack_floater(struct ws_win *win, struct swm_region *r)
 996 {
 997         unsigned int            mask;
 998         XWindowChanges          wc;
 999
1000         bzero(&wc, sizeof wc);
1001         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1002         wc.border_width = 1;
1003         if (win->transient) {
1004                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1005                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1006         }
1007         wc.width = win->g.w;
1008         wc.height = win->g.h;
1009         wc.x = (WIDTH(r) - win->g.w) / 2;
1010         wc.y = (HEIGHT(r) - win->g.h) / 2;
1011
1012         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1013             win->id, wc.x, wc.y, wc.width, wc.height);
1014
1015         XConfigureWindow(display, win->id, mask, &wc);
1016 }
1017
1018
1019 void
1020 vertical_config(struct workspace *ws, int id)
1021 {
1022         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1023
1024         switch (id) {
1025         case SWM_ARG_ID_STACKRESET:
1026         case SWM_ARG_ID_STACKINIT:
1027                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1028                 ws->l_state.vertical_mwin = 1;
1029                 break;
1030         case SWM_ARG_ID_MASTERSHRINK:
1031                 if (ws->l_state.vertical_msize > 1)
1032                         ws->l_state.vertical_msize--;
1033                 break;
1034         case SWM_ARG_ID_MASTERGROW:
1035                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1036                         ws->l_state.vertical_msize++;
1037                 break;
1038         case SWM_ARG_ID_MASTERADD:
1039                 ws->l_state.vertical_mwin++;
1040                 break;
1041         case SWM_ARG_ID_MASTERDEL:
1042                 if (ws->l_state.vertical_mwin > 0)
1043                         ws->l_state.vertical_mwin--;
1044                 break;
1045         default:
1046                 return;
1047         }
1048 }
1049
1050 void
1051 vertical_stack(struct workspace *ws, struct swm_geometry *g) {
1052         XWindowChanges          wc;
1053         struct swm_geometry     gg = *g;
1054         struct ws_win           *win, *winfocus;
1055         int                     i, j, split, colno, hrh, winno, main_width;
1056         unsigned int            mask;
1057
1058         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1059
1060         if ((winno = count_win(ws, 0)) == 0)
1061                 return;
1062
1063         if (ws->focus == NULL)
1064                 ws->focus = TAILQ_FIRST(&ws->winlist);
1065         winfocus = cur_focus ? cur_focus : ws->focus;
1066
1067         if (ws->l_state.vertical_mwin &&
1068             winno > ws->l_state.vertical_mwin) {
1069                 split = ws->l_state.vertical_mwin;
1070                 colno = split;
1071                 main_width = (g->w / SWM_V_SLICE) *
1072                    ws->l_state.vertical_msize;
1073                 gg.w = main_width;
1074         } else {
1075                 colno = winno;
1076                 split = 0;
1077         }
1078         hrh = g->h / colno;
1079         gg.h = hrh - 2;
1080
1081         i = j = 0;
1082         TAILQ_FOREACH(win, &ws->winlist, entry) {
1083                 if (split && i == split) {
1084                         colno = winno - split;
1085                         hrh = (g->h / colno);
1086                         gg.x += main_width + 2;
1087                         gg.w = g->w - (main_width + 2);
1088                         gg.h = hrh - 2;
1089                         j = 0;
1090                 }
1091                 if (j == colno - 1)
1092                         gg.h = (hrh + (g->h - (colno * hrh)));
1093
1094                 if (j == 0)
1095                         gg.y = g->y;
1096                 else
1097                         gg.y += hrh;
1098
1099
1100                 if (win->transient != 0 || win->floating != 0)
1101                         stack_floater(win, ws->r);
1102                 else {
1103                         bzero(&wc, sizeof wc);
1104                         wc.border_width = 1;
1105                         win->g.x = wc.x = gg.x;
1106                         win->g.y = wc.y = gg.y;
1107                         win->g.w = wc.width = gg.w;
1108                         win->g.h = wc.height = gg.h;
1109                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1110                         XConfigureWindow(display, win->id, mask, &wc);
1111                 }
1112
1113                 XMapRaised(display, win->id);
1114                 i++;
1115                 j++;
1116         }
1117
1118         if (winfocus)
1119                 focus_win(winfocus); /* has to be done outside of the loop */
1120 }
1121
1122
1123 void
1124 horizontal_config(struct workspace *ws, int id)
1125 {
1126         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1127
1128         switch (id) {
1129         case SWM_ARG_ID_STACKRESET:
1130         case SWM_ARG_ID_STACKINIT:
1131                 ws->l_state.horizontal_mwin = 1;
1132                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1133                 break;
1134         case SWM_ARG_ID_MASTERSHRINK:
1135                 if (ws->l_state.horizontal_msize > 1)
1136                         ws->l_state.horizontal_msize--;
1137                 break;
1138         case SWM_ARG_ID_MASTERGROW:
1139                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1140                         ws->l_state.horizontal_msize++;
1141                 break;
1142         case SWM_ARG_ID_MASTERADD:
1143                 ws->l_state.horizontal_mwin++;
1144                 break;
1145         case SWM_ARG_ID_MASTERDEL:
1146                 if (ws->l_state.horizontal_mwin > 0)
1147                         ws->l_state.horizontal_mwin--;
1148                 break;
1149         default:
1150                 return;
1151         }
1152 }
1153
1154 void
1155 horizontal_stack(struct workspace *ws, struct swm_geometry *g) {
1156         XWindowChanges          wc;
1157         struct swm_geometry     gg = *g;
1158         struct ws_win           *win, *winfocus;
1159         int                     i, j, split, rowno, hrw, winno, main_height;
1160         unsigned int            mask;
1161
1162         DNPRINTF(SWM_D_STACK, "horizontal_stack: workspace: %d\n", ws->idx);
1163
1164         if ((winno = count_win(ws, 0)) == 0)
1165                 return;
1166
1167         if (ws->focus == NULL)
1168                 ws->focus = TAILQ_FIRST(&ws->winlist);
1169         winfocus = cur_focus ? cur_focus : ws->focus;
1170
1171         if (ws->l_state.horizontal_mwin &&
1172             winno > ws->l_state.horizontal_mwin) {
1173                 split = ws->l_state.horizontal_mwin;
1174                 rowno = split;
1175                 main_height = (g->h / SWM_V_SLICE) *
1176                    ws->l_state.horizontal_msize;
1177                 gg.h = main_height;
1178         } else {
1179                 rowno = winno;
1180                 split = 0;
1181         }
1182         hrw = g->w / rowno;
1183         gg.w = hrw - 2;
1184
1185         i = j = 0;
1186         TAILQ_FOREACH(win, &ws->winlist, entry) {
1187                 if (split && i == split) {
1188                         rowno = winno - split;
1189                         hrw = (g->w / rowno);
1190                         gg.y += main_height + 2;
1191                         gg.h = g->h - (main_height + 2);
1192                         gg.w = hrw - 2;
1193                         j = 0;
1194                 }
1195                 if (j == rowno - 1)
1196                         gg.w = (hrw + (g->w - (rowno * hrw)));
1197
1198                 if (j == 0)
1199                         gg.x = g->x;
1200                 else
1201                         gg.x += hrw;
1202
1203                 if (win->transient != 0 || win->floating != 0)
1204                         stack_floater(win, ws->r);
1205                 else {
1206                         bzero(&wc, sizeof wc);
1207                         wc.border_width = 1;
1208                         win->g.x = wc.x = gg.x;
1209                         win->g.y = wc.y = gg.y;
1210                         win->g.w = wc.width = gg.w;
1211                         win->g.h = wc.height = gg.h;
1212                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1213                         XConfigureWindow(display, win->id, mask, &wc);
1214                 }
1215
1216                 XMapRaised(display, win->id);
1217                 j++;
1218                 i++;
1219         }
1220
1221         if (winfocus)
1222                 focus_win(winfocus); /* this has to be done outside of the loop */
1223 }
1224
1225 /* fullscreen view */
1226 void
1227 max_stack(struct workspace *ws, struct swm_geometry *g) {
1228         XWindowChanges          wc;
1229         struct swm_geometry     gg = *g;
1230         struct ws_win           *win, *winfocus;
1231         unsigned int            mask;
1232
1233         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1234
1235         if (count_win(ws, 0) == 0)
1236                 return;
1237
1238         if (ws->focus == NULL)
1239                 ws->focus = TAILQ_FIRST(&ws->winlist);
1240         winfocus = cur_focus ? cur_focus : ws->focus;
1241
1242         TAILQ_FOREACH(win, &ws->winlist, entry) {
1243                 if (win->transient != 0 || win->floating != 0) {
1244                         if (win == ws->focus) {
1245                                 /* XXX maximize? */
1246                                 stack_floater(win, ws->r);
1247                                 XMapRaised(display, win->id);
1248                         } else
1249                                 XUnmapWindow(display, win->id);
1250                 } else {
1251                         bzero(&wc, sizeof wc);
1252                         wc.border_width = 1;
1253                         win->g.x = wc.x = gg.x;
1254                         win->g.y = wc.y = gg.y;
1255                         win->g.w = wc.width = gg.w;
1256                         win->g.h = wc.height = gg.h;
1257                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1258                         XConfigureWindow(display, win->id, mask, &wc);
1259
1260                         if (win == ws->focus) {
1261                                 XMapRaised(display, win->id);
1262                         } else
1263                                 XUnmapWindow(display, win->id);
1264                 }
1265         }
1266
1267         if (winfocus)
1268                 focus_win(winfocus); /* has to be done outside of the loop */
1269 }
1270
1271 void
1272 send_to_ws(struct swm_region *r, union arg *args)
1273 {
1274         int                     wsid = args->id;
1275         struct ws_win           *win = cur_focus;
1276         struct workspace        *ws, *nws;
1277
1278         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1279
1280         ws = win->ws;
1281         nws = &win->s->ws[wsid];
1282
1283         XUnmapWindow(display, win->id);
1284
1285         /* find a window to focus */
1286         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1287         if (ws->focus == NULL)
1288                 ws->focus = TAILQ_FIRST(&ws->winlist);
1289         if (ws->focus == win)
1290                 ws->focus = NULL;
1291
1292         TAILQ_REMOVE(&ws->winlist, win, entry);
1293
1294         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1295         win->ws = nws;
1296
1297         if (count_win(nws, 1) == 1)
1298                 nws->focus = win;
1299         ws->restack = 1;
1300         nws->restack = 1;
1301
1302         stack();
1303 }
1304
1305 /* key definitions */
1306 struct key {
1307         unsigned int            mod;
1308         KeySym                  keysym;
1309         void                    (*func)(struct swm_region *r, union arg *);
1310         union arg               args;
1311 } keys[] = {
1312         /* modifier             key     function                argument */
1313         { MODKEY,               XK_space,       cycle_layout,   {0} },
1314         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1315         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1316         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1317         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1318         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1319         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1320         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1321         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1322         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1323         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1324         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1325         { MODKEY,               XK_p,           spawn,          {.argv = spawn_menu} },
1326         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1327         { MODKEY,               XK_q,           restart,        {0} },
1328         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1329         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1330         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1331         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1332         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1333         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1334         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1335         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1336         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1337         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1338         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1339         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1340         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1341         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1342         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1343         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1344         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1345         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1346         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1347         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1348         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1349         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1350         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1351         { MODKEY,               XK_b,           bar_toggle,     {0} },
1352         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1353         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1354 };
1355
1356 #if 0
1357 /* mouse */
1358 enum { client_click, root_click };
1359 struct button {
1360         unsigned int            click;
1361         unsigned int            mask;
1362         unsigned int            button;
1363         void                    (*func)(struct swm_region *r, union arg *);
1364         union arg               args;
1365 } buttons[] = {
1366           /* action             key             mouse button    func            args */
1367         { client_click,         MODKEY,         Button2,        NULL, {0} },
1368 };
1369 #endif
1370
1371 void
1372 updatenumlockmask(void)
1373 {
1374         unsigned int            i, j;
1375         XModifierKeymap         *modmap;
1376
1377         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1378         numlockmask = 0;
1379         modmap = XGetModifierMapping(display);
1380         for (i = 0; i < 8; i++)
1381                 for (j = 0; j < modmap->max_keypermod; j++)
1382                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1383                           == XKeysymToKeycode(display, XK_Num_Lock))
1384                                 numlockmask = (1 << i);
1385
1386         XFreeModifiermap(modmap);
1387 }
1388
1389 void
1390 grabkeys(void)
1391 {
1392         unsigned int            i, j, k;
1393         KeyCode                 code;
1394         unsigned int            modifiers[] =
1395             { 0, LockMask, numlockmask, numlockmask | LockMask };
1396
1397         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1398         updatenumlockmask();
1399
1400         for (k = 0; k < ScreenCount(display); k++) {
1401                 if (TAILQ_EMPTY(&screens[k].rl))
1402                         continue;
1403                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1404                 for (i = 0; i < LENGTH(keys); i++) {
1405                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1406                                 for (j = 0; j < LENGTH(modifiers); j++)
1407                                         XGrabKey(display, code,
1408                                             keys[i].mod | modifiers[j],
1409                                             screens[k].root, True,
1410                                             GrabModeAsync, GrabModeAsync);
1411                 }
1412         }
1413 }
1414 void
1415 expose(XEvent *e)
1416 {
1417         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1418 }
1419
1420 void
1421 keypress(XEvent *e)
1422 {
1423         unsigned int            i;
1424         KeySym                  keysym;
1425         XKeyEvent               *ev = &e->xkey;
1426
1427         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1428
1429         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1430         for (i = 0; i < LENGTH(keys); i++)
1431                 if (keysym == keys[i].keysym
1432                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1433                    && keys[i].func)
1434                         keys[i].func(root_to_region(ev->root),
1435                             &(keys[i].args));
1436 }
1437
1438 void
1439 buttonpress(XEvent *e)
1440 {
1441         XButtonPressedEvent     *ev = &e->xbutton;
1442 #ifdef SWM_CLICKTOFOCUS
1443         struct ws_win           *win;
1444         struct workspace        *ws;
1445         struct swm_region       *r;
1446 #endif
1447
1448         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
1449
1450         if (ev->window == ev->root) {
1451                 rootclick = ev->root;
1452                 return;
1453         }
1454         if (ev->window == cur_focus->id)
1455                 return;
1456 #ifdef SWM_CLICKTOFOCUS
1457         r = root_to_region(ev->root);
1458         ws = r->ws;
1459         TAILQ_FOREACH(win, &ws->winlist, entry)
1460                 if (win->id == ev->window) {
1461                         /* focus in the clicked window */
1462                         XSetWindowBorder(display, ev->window, 0xff0000);
1463                         XSetWindowBorder(display, ws->focus->id, 0x888888);
1464                         XSetInputFocus(display, ev->window, RevertToPointerRoot,
1465                             CurrentTime);
1466                         ws->focus = win;
1467                         XSync(display, False);
1468                         break;
1469         }
1470 #endif
1471 }
1472
1473 void
1474 set_win_state(struct ws_win *win, long state)
1475 {
1476         long                    data[] = {state, None};
1477
1478         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
1479
1480         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
1481             (unsigned char *)data, 2);
1482 }
1483
1484 struct ws_win *
1485 manage_window(Window id, struct workspace *ws)
1486 {
1487         Window                  trans;
1488         struct ws_win           *win;
1489         XClassHint              ch;
1490
1491         TAILQ_FOREACH(win, &ws->winlist, entry) {
1492                 if (win->id == id)
1493                         return (win);   /* already being managed */
1494         }
1495
1496         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1497                 errx(1, "calloc: failed to allocate memory for new window");
1498
1499         win->id = id;
1500         win->ws = ws;
1501         win->s = ws->r->s;      /* this never changes */
1502         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
1503
1504         /* make new win focused */
1505         focus_win(win);
1506
1507         XGetTransientForHint(display, win->id, &trans);
1508         if (trans) {
1509                 win->transient = trans;
1510                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
1511                     (unsigned)win->id, win->transient);
1512         }
1513         XGetWindowAttributes(display, id, &win->wa);
1514         win->g.w = win->wa.width;
1515         win->g.h = win->wa.height;
1516         win->g.x = win->wa.x;
1517         win->g.y = win->wa.y;
1518
1519         /* XXX make this a table */
1520         bzero(&ch, sizeof ch);
1521         if (XGetClassHint(display, win->id, &ch)) {
1522                 /*fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name); */
1523                 if (!strcmp(ch.res_class, "MPlayer") && !strcmp(ch.res_name, "xv")) {
1524                         win->floating = 1;
1525                 }
1526                 if (ch.res_class)
1527                         XFree(ch.res_class);
1528                 if (ch.res_name)
1529                         XFree(ch.res_name);
1530         }
1531
1532         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
1533             PropertyChangeMask | StructureNotifyMask);
1534
1535         set_win_state(win, NormalState);
1536
1537         return (win);
1538 }
1539
1540 void
1541 configurerequest(XEvent *e)
1542 {
1543         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1544         struct ws_win           *win;
1545         int                     new = 1;
1546         XWindowChanges          wc;
1547
1548         if ((win = find_window(ev->window)) == NULL)
1549                 new = 1;
1550
1551         if (new) {
1552                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
1553                     ev->window);
1554                 bzero(&wc, sizeof wc);
1555                 wc.x = ev->x;
1556                 wc.y = ev->y;
1557                 wc.width = ev->width;
1558                 wc.height = ev->height;
1559                 wc.border_width = ev->border_width;
1560                 wc.sibling = ev->above;
1561                 wc.stack_mode = ev->detail;
1562                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
1563         } else {
1564                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
1565                     ev->window);
1566                 if (win->floating) {
1567                         if (ev->value_mask & CWX)
1568                                 win->g.x = ev->x;
1569                         if (ev->value_mask & CWY)
1570                                 win->g.y = ev->y;
1571                         if (ev->value_mask & CWWidth)
1572                                 win->g.w = ev->width;
1573                         if (ev->value_mask & CWHeight)
1574                                 win->g.h = ev->height;
1575                         if (win->ws->r != NULL) {
1576                                 /* this seems to be full screen */
1577                                 if (win->g.w > WIDTH(win->ws->r)) {
1578                                         /* kill border */
1579                                         win->g.x -= 1;
1580                                         win->g.w += 1;
1581                                 }
1582                                 if (win->g.h > HEIGHT(win->ws->r)) {
1583                                         /* kill border */
1584                                         win->g.y -= 1;
1585                                         win->g.h += 1;
1586                                 }
1587                         }
1588                         if ((ev->value_mask & (CWX|CWY)) &&
1589                             !(ev->value_mask & (CWWidth|CWHeight)))
1590                                 config_win(win);
1591                         XMoveResizeWindow(display, win->id,
1592                             win->g.x, win->g.y, win->g.w, win->g.h);
1593                 } else
1594                         config_win(win);
1595         }
1596 }
1597
1598 void
1599 configurenotify(XEvent *e)
1600 {
1601         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1602             e->xconfigure.window);
1603 }
1604
1605 void
1606 destroynotify(XEvent *e)
1607 {
1608         struct ws_win           *win;
1609         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1610         struct workspace        *ws;
1611
1612         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1613
1614         if ((win = find_window(ev->window)) != NULL) {
1615                 ws = win->ws;
1616                 /* find a window to focus */
1617                 if (ws->focus == win)
1618                         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1619                 if (ws->focus == NULL)
1620                         ws->focus = TAILQ_FIRST(&ws->winlist);
1621                 if (ws->focus == win)
1622                         ws->focus = NULL;
1623                 if (cur_focus == win)
1624                         focus_win(ws->focus);
1625
1626                 TAILQ_REMOVE(&ws->winlist, win, entry);
1627                 set_win_state(win, WithdrawnState);
1628                 free(win);
1629         }
1630         stack();
1631 }
1632
1633 void
1634 enternotify(XEvent *e)
1635 {
1636         XCrossingEvent          *ev = &e->xcrossing;
1637         struct ws_win           *win;
1638
1639         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1640
1641         if (ignore_enter) {
1642                 /* eat event(r) to prevent autofocus */
1643                 ignore_enter--;
1644                 return;
1645         }
1646
1647         if ((win = find_window(ev->window)) != NULL)
1648                 focus_win(win);
1649 }
1650
1651 void
1652 focusin(XEvent *e)
1653 {
1654         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
1655
1656         /* XXX this probably needs better handling now.
1657         if (ev->window == ev->root)
1658                 return;
1659         */
1660         /*
1661          * kill grab for now so that we can cut and paste , this screws up
1662          * click to focus
1663          */
1664         /*
1665         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu grabbing\n", ev->window);
1666         XGrabButton(display, Button1, AnyModifier, ev->window, False,
1667             ButtonPress, GrabModeAsync, GrabModeSync, None, None);
1668         */
1669 }
1670
1671 void
1672 mappingnotify(XEvent *e)
1673 {
1674         XMappingEvent           *ev = &e->xmapping;
1675
1676         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1677
1678         XRefreshKeyboardMapping(ev);
1679         if (ev->request == MappingKeyboard)
1680                 grabkeys();
1681 }
1682
1683 void
1684 maprequest(XEvent *e)
1685 {
1686         XMapRequestEvent        *ev = &e->xmaprequest;
1687         XWindowAttributes       wa;
1688         struct swm_region       *r;
1689
1690         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1691             e->xmaprequest.window);
1692
1693         if (!XGetWindowAttributes(display, ev->window, &wa))
1694                 return;
1695         if (wa.override_redirect)
1696                 return;
1697         r = root_to_region(wa.root);
1698         manage_window(e->xmaprequest.window, r->ws);
1699         stack();
1700 }
1701
1702 void
1703 propertynotify(XEvent *e)
1704 {
1705         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
1706             e->xproperty.window);
1707 }
1708
1709 void
1710 unmapnotify(XEvent *e)
1711 {
1712         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
1713 }
1714
1715 void
1716 visibilitynotify(XEvent *e)
1717 {
1718         int                     i;
1719         struct swm_region       *r;
1720
1721         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
1722             e->xvisibility.window);
1723         if (e->xvisibility.state == VisibilityUnobscured)
1724                 for (i = 0; i < ScreenCount(display); i++)
1725                         TAILQ_FOREACH(r, &screens[i].rl, entry)
1726                                 if (e->xvisibility.window == r->bar_window)
1727                                         bar_update();
1728 }
1729
1730 void                    (*handler[LASTEvent])(XEvent *) = {
1731                                 [Expose] = expose,
1732                                 [KeyPress] = keypress,
1733                                 [ButtonPress] = buttonpress,
1734                                 [ConfigureRequest] = configurerequest,
1735                                 [ConfigureNotify] = configurenotify,
1736                                 [DestroyNotify] = destroynotify,
1737                                 [EnterNotify] = enternotify,
1738                                 [FocusIn] = focusin,
1739                                 [MappingNotify] = mappingnotify,
1740                                 [MapRequest] = maprequest,
1741                                 [PropertyNotify] = propertynotify,
1742                                 [UnmapNotify] = unmapnotify,
1743                                 [VisibilityNotify] = visibilitynotify,
1744 };
1745
1746 int
1747 xerror_start(Display *d, XErrorEvent *ee)
1748 {
1749         other_wm = 1;
1750         return (-1);
1751 }
1752
1753 int
1754 xerror(Display *d, XErrorEvent *ee)
1755 {
1756         /* fprintf(stderr, "error: %p %p\n", display, ee); */
1757         return (-1);
1758 }
1759
1760 int
1761 active_wm(void)
1762 {
1763         other_wm = 0;
1764         xerrorxlib = XSetErrorHandler(xerror_start);
1765
1766         /* this causes an error if some other window manager is running */
1767         XSelectInput(display, DefaultRootWindow(display),
1768             SubstructureRedirectMask);
1769         XSync(display, False);
1770         if (other_wm)
1771                 return (1);
1772
1773         XSetErrorHandler(xerror);
1774         XSync(display, False);
1775         return (0);
1776 }
1777
1778 long
1779 getstate(Window w)
1780 {
1781         int                     format, status;
1782         long                    result = -1;
1783         unsigned char           *p = NULL;
1784         unsigned long           n, extra;
1785         Atom                    real;
1786
1787         astate = XInternAtom(display, "WM_STATE", False);
1788         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
1789             &real, &format, &n, &extra, (unsigned char **)&p);
1790         if (status != Success)
1791                 return (-1);
1792         if (n != 0)
1793                 result = *p;
1794         XFree(p);
1795         return (result);
1796 }
1797
1798 void
1799 new_region(struct swm_screen *s, struct workspace *ws,
1800     int x, int y, int w, int h)
1801 {
1802         struct swm_region       *r;
1803
1804         DNPRINTF(SWM_D_MISC, "new region on screen %d: %dx%d (%d, %d)\n",
1805              s->idx, x, y, w, h);
1806
1807         if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
1808                 errx(1, "calloc: failed to allocate memory for screen");
1809
1810         X(r) = x;
1811         Y(r) = y;
1812         WIDTH(r) = w;
1813         HEIGHT(r) = h;
1814         r->s = s;
1815         r->ws = ws;
1816         ws->r = r;
1817         TAILQ_INSERT_TAIL(&s->rl, r, entry);
1818         bar_setup(r);
1819 }
1820
1821 void
1822 setup_screens(void)
1823 {
1824 #ifdef SWM_XRR_HAS_CRTC
1825         XRRCrtcInfo             *ci;
1826         XRRScreenResources      *sr;
1827         int                     c;
1828 #endif /* SWM_XRR_HAS_CRTC */
1829         Window                  d1, d2, *wins = NULL;
1830         XWindowAttributes       wa;
1831         struct swm_region       *r;
1832         unsigned int            no;
1833         int                     errorbase, major, minor;
1834         int                     ncrtc = 0, w = 0;
1835         int                     i, j, k;
1836         struct workspace        *ws;
1837
1838         if ((screens = calloc(ScreenCount(display),
1839              sizeof(struct swm_screen))) == NULL)
1840                 errx(1, "calloc: screens");
1841
1842         /* map physical screens */
1843         for (i = 0; i < ScreenCount(display); i++) {
1844                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
1845                 screens[i].idx = i;
1846                 TAILQ_INIT(&screens[i].rl);
1847                 screens[i].root = RootWindow(display, i);
1848                 XGetWindowAttributes(display, screens[i].root, &wa);
1849                 XSelectInput(display, screens[i].root,
1850                     EnterWindowMask | ButtonPressMask | wa.your_event_mask);
1851
1852                 /* set default colors */
1853                 screens[i].color_focus = name_to_color("red");
1854                 screens[i].color_unfocus = name_to_color("rgb:88/88/88");
1855                 screens[i].bar_border = name_to_color("rgb:00/80/80");
1856                 screens[i].bar_color = name_to_color("black");
1857                 screens[i].bar_font_color = name_to_color("rgb:a0/a0/a0");
1858
1859                 /* init all workspaces */
1860                 for (j = 0; j < SWM_WS_MAX; j++) {
1861                         ws = &screens[i].ws[j];
1862                         ws->idx = j;
1863                         ws->restack = 1;
1864                         ws->focus = NULL;
1865                         ws->r = NULL;
1866                         TAILQ_INIT(&ws->winlist);
1867
1868                         for (k = 0; layouts[k].l_stack != NULL; k++)
1869                                 if (layouts[k].l_config != NULL)
1870                                         layouts[k].l_config(ws,
1871                                             SWM_ARG_ID_STACKINIT);
1872                         ws->cur_layout = &layouts[0];
1873                 }
1874
1875                 /* map virtual screens onto physical screens */
1876                 screens[i].xrandr_support = XRRQueryExtension(display,
1877                     &xrandr_eventbase, &errorbase);
1878                 if (screens[i].xrandr_support)
1879                         if (XRRQueryVersion(display, &major, &minor) &&
1880                             major < 1)
1881                                 screens[i].xrandr_support = 0;
1882
1883 #if 0   /* not ready for dynamic screen changes */
1884                 if (screens[i].xrandr_support)
1885                         XRRSelectInput(display,
1886                             screens[r->s].root,
1887                             RRScreenChangeNotifyMask);
1888 #endif
1889
1890                 /* grab existing windows (before we build the bars)*/
1891                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
1892                         continue;
1893
1894 #ifdef SWM_XRR_HAS_CRTC
1895                 sr = XRRGetScreenResources(display, screens[i].root);
1896                 if (sr == NULL)
1897                         new_region(&screens[i], &screens[i].ws[w],
1898                             0, 0, DisplayWidth(display, i),
1899                             DisplayHeight(display, i));
1900                 else
1901                         ncrtc = sr->ncrtc;
1902
1903                 for (c = 0; c < ncrtc; c++) {
1904                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
1905                         if (ci->noutput == 0)
1906                                 continue;
1907
1908                         if (ci != NULL && ci->mode == None)
1909                                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
1910                                     DisplayWidth(display, i),
1911                                     DisplayHeight(display, i));
1912                         else
1913                                 new_region(&screens[i], &screens[i].ws[w],
1914                                     ci->x, ci->y, ci->width, ci->height);
1915                         w++;
1916                 }
1917                 XRRFreeCrtcInfo(ci);
1918                 XRRFreeScreenResources(sr);
1919 #else
1920                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
1921                     DisplayWidth(display, i),
1922                     DisplayHeight(display, i));
1923 #endif /* SWM_XRR_HAS_CRTC */
1924
1925                 /* attach windows to a region */
1926                 /* normal windows */
1927                 if ((r = TAILQ_FIRST(&screens[i].rl)) == NULL)
1928                         errx(1, "no regions on screen %d", i);
1929
1930                 for (i = 0; i < no; i++) {
1931                         XGetWindowAttributes(display, wins[i], &wa);
1932                         if (!XGetWindowAttributes(display, wins[i], &wa) ||
1933                             wa.override_redirect ||
1934                             XGetTransientForHint(display, wins[i], &d1))
1935                                 continue;
1936
1937                         if (wa.map_state == IsViewable ||
1938                             getstate(wins[i]) == NormalState)
1939                                 manage_window(wins[i], r->ws);
1940                 }
1941                 /* transient windows */
1942                 for (i = 0; i < no; i++) {
1943                         if (!XGetWindowAttributes(display, wins[i], &wa))
1944                                 continue;
1945
1946                         if (XGetTransientForHint(display, wins[i], &d1) &&
1947                             (wa.map_state == IsViewable || getstate(wins[i]) ==
1948                             NormalState))
1949                                 manage_window(wins[i], r->ws);
1950                 }
1951                 if (wins) {
1952                         XFree(wins);
1953                         wins = NULL;
1954                 }
1955         }
1956 }
1957
1958 int
1959 main(int argc, char *argv[])
1960 {
1961         struct passwd           *pwd;
1962         char                    conf[PATH_MAX], *cfile = NULL;
1963         struct stat             sb;
1964         XEvent                  e;
1965         int                     xfd;
1966         fd_set                  rd;
1967
1968         start_argv = argv;
1969         fprintf(stderr, "Welcome to scrotwm V%s\n", SWM_VERSION);
1970         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
1971                 warnx("no locale support");
1972
1973         if (!(display = XOpenDisplay(0)))
1974                 errx(1, "can not open display");
1975
1976         if (active_wm())
1977                 errx(1, "other wm running");
1978
1979         astate = XInternAtom(display, "WM_STATE", False);
1980
1981         /* look for local and global conf file */
1982         pwd = getpwuid(getuid());
1983         if (pwd == NULL)
1984                 errx(1, "invalid user %d", getuid());
1985
1986         setup_screens();
1987
1988         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
1989         if (stat(conf, &sb) != -1) {
1990                 if (S_ISREG(sb.st_mode))
1991                         cfile = conf;
1992         } else {
1993                 /* try global conf file */
1994                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
1995                 if (!stat(conf, &sb))
1996                         if (S_ISREG(sb.st_mode))
1997                                 cfile = conf;
1998         }
1999         if (cfile)
2000                 conf_load(cfile);
2001         bar_refresh();
2002
2003         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2004
2005         grabkeys();
2006         stack();
2007
2008         xfd = ConnectionNumber(display);
2009         while (running) {
2010                 FD_SET(xfd, &rd);
2011                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2012                         if (errno != EINTR)
2013                                 errx(1, "select failed");
2014                 if (bar_alarm) {
2015                         bar_alarm = 0;
2016                         bar_update();
2017                 }
2018                 while(XPending(display)) {
2019                         XNextEvent(display, &e);
2020                         if (handler[e.type])
2021                                 handler[e.type](&e);
2022                 }
2023         }
2024
2025         XCloseDisplay(display);
2026
2027         return (0);
2028 }