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                     ss_enabled = 0;
 143 int                     xrandr_eventbase;
 144 int                     ignore_enter = 0;
 145 unsigned int            numlockmask = 0;
 146 Display                 *display;
 147
 148 int                     cycle_empty = 0;
 149 int                     cycle_visible = 0;
 150
 151 /* dialog windows */
 152 double                  dialog_ratio = .6;
 153 /* status bar */
 154 #define SWM_BAR_MAX     (128)
 155 char                    *bar_argv[] = { NULL, NULL };
 156 int                     bar_pipe[2];
 157 char                    bar_ext[SWM_BAR_MAX];
 158 sig_atomic_t            bar_alarm = 0;
 159 int                     bar_delay = 30;
 160 int                     bar_enabled = 1;
 161 int                     bar_extra = 1;
 162 int                     bar_extra_running = 0;
 163 int                     bar_verbose = 1;
 164 int                     bar_height = 0;
 165 pid_t                   bar_pid;
 166 GC                      bar_gc;
 167 XGCValues               bar_gcv;
 168 int                     bar_fidx = 0;
 169 XFontStruct             *bar_fs;
 170 char                    *bar_fonts[] = {
 171                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 172                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 173                             NULL
 174 };
 175
 176 /* terminal + args */
 177 char                    *spawn_term[] = { "xterm", NULL };
 178 char                    *spawn_screenshot[] = { "scrot", NULL, NULL }; /* XXX get from conf */
 179 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL,
 180                             "-nb", NULL, "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 181
 182 #define SWM_MENU_FN     (2)
 183 #define SWM_MENU_NB     (4)
 184 #define SWM_MENU_NF     (6)
 185 #define SWM_MENU_SB     (8)
 186 #define SWM_MENU_SF     (10)
 187
 188 /* layout manager data */
 189 struct swm_geometry {
 190         int                     x;
 191         int                     y;
 192         int                     w;
 193         int                     h;
 194 };
 195
 196 struct swm_screen;
 197 struct workspace;
 198
 199 /* virtual "screens" */
 200 struct swm_region {
 201         TAILQ_ENTRY(swm_region) entry;
 202         struct swm_geometry     g;
 203         Window                  bar_window;
 204         struct workspace        *ws;    /* current workspace on this region */
 205         struct swm_screen       *s;     /* screen idx */
 206 };
 207 TAILQ_HEAD(swm_region_list, swm_region);
 208
 209 struct ws_win {
 210         TAILQ_ENTRY(ws_win)     entry;
 211         Window                  id;
 212         struct swm_geometry     g;
 213         int                     got_focus;
 214         int                     floating;
 215         int                     transient;
 216         struct workspace        *ws;    /* always valid */
 217         struct swm_screen       *s;     /* always valid, never changes */
 218         XWindowAttributes       wa;
 219         XSizeHints              sh;
 220 };
 221 TAILQ_HEAD(ws_win_list, ws_win);
 222
 223 /* layout handlers */
 224 void    stack(void);
 225 void    vertical_config(struct workspace *, int);
 226 void    vertical_stack(struct workspace *, struct swm_geometry *);
 227 void    horizontal_config(struct workspace *, int);
 228 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 229 void    max_stack(struct workspace *, struct swm_geometry *);
 230
 231 void    grabbuttons(struct ws_win *, int);
 232
 233 struct layout {
 234         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 235         void            (*l_config)(struct workspace *, int);
 236 } layouts[] =  {
 237         /* stack,               configure */
 238         { vertical_stack,       vertical_config},
 239         { horizontal_stack,     horizontal_config},
 240         { max_stack,            NULL},
 241         { NULL,                 NULL},
 242 };
 243
 244 #define SWM_H_SLICE             (32)
 245 #define SWM_V_SLICE             (32)
 246
 247 /* define work spaces */
 248 struct workspace {
 249         int                     idx;            /* workspace index */
 250         int                     restack;        /* restack on switch */
 251         struct layout           *cur_layout;    /* current layout handlers */
 252         struct ws_win           *focus;         /* may be NULL */
 253         struct swm_region       *r;             /* may be NULL */
 254         struct ws_win_list      winlist;        /* list of windows in ws */
 255
 256         /* stacker state */
 257         struct {
 258                                 int horizontal_msize;
 259                                 int horizontal_mwin;
 260                                 int vertical_msize;
 261                                 int vertical_mwin;
 262         } l_state;
 263 };
 264
 265 enum    { SWM_S_COLOR_BAR, SWM_S_COLOR_BAR_BORDER, SWM_S_COLOR_BAR_FONT,
 266           SWM_S_COLOR_FOCUS, SWM_S_COLOR_UNFOCUS, SWM_S_COLOR_MAX };
 267
 268 /* physical screen mapping */
 269 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 270 struct swm_screen {
 271         int                     idx;            /* screen index */
 272         struct swm_region_list  rl;     /* list of regions on this screen */
 273         Window                  root;
 274         int                     xrandr_support;
 275         struct workspace        ws[SWM_WS_MAX];
 276
 277         /* colors */
 278         struct {
 279                 unsigned long   color;
 280                 char            *name;
 281         } c[SWM_S_COLOR_MAX];
 282 };
 283 struct swm_screen       *screens;
 284 int                     num_screens;
 285
 286 struct ws_win           *cur_focus = NULL;
 287
 288 /* args to functions */
 289 union arg {
 290         int                     id;
 291 #define SWM_ARG_ID_FOCUSNEXT    (0)
 292 #define SWM_ARG_ID_FOCUSPREV    (1)
 293 #define SWM_ARG_ID_FOCUSMAIN    (2)
 294 #define SWM_ARG_ID_SWAPNEXT     (3)
 295 #define SWM_ARG_ID_SWAPPREV     (4)
 296 #define SWM_ARG_ID_SWAPMAIN     (5)
 297 #define SWM_ARG_ID_MASTERSHRINK (6)
 298 #define SWM_ARG_ID_MASTERGROW   (7)
 299 #define SWM_ARG_ID_MASTERADD    (8)
 300 #define SWM_ARG_ID_MASTERDEL    (9)
 301 #define SWM_ARG_ID_STACKRESET   (10)
 302 #define SWM_ARG_ID_STACKINIT    (11)
 303 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 304 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 305 #define SWM_ARG_ID_SS_ALL       (0)
 306 #define SWM_ARG_ID_SS_WINDOW    (1)
 307         char                    **argv;
 308 };
 309
 310 unsigned long
 311 name_to_color(char *colorname)
 312 {
 313         Colormap                cmap;
 314         Status                  status;
 315         XColor                  screen_def, exact_def;
 316         unsigned long           result = 0;
 317         char                    cname[32] = "#";
 318
 319         cmap = DefaultColormap(display, screens[0].idx);
 320         status = XAllocNamedColor(display, cmap, colorname,
 321             &screen_def, &exact_def);
 322         if (!status) {
 323                 strlcat(cname, colorname + 2, sizeof cname - 1);
 324                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 325                     &exact_def);
 326         }
 327         if (status)
 328                 result = screen_def.pixel;
 329         else
 330                 fprintf(stderr, "color '%s' not found.\n", colorname);
 331
 332         return (result);
 333 }
 334
 335 void
 336 setscreencolor(char *val, int i, int c)
 337 {
 338         if (i > 0 && i <= ScreenCount(display)) {
 339                 screens[i - 1].c[c].color = name_to_color(val);
 340                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 341                         errx(1, "strdup");
 342         } else if (i == -1) {
 343                 for (i = 0; i < ScreenCount(display); i++)
 344                         screens[i].c[c].color = name_to_color(val);
 345                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 346                                 errx(1, "strdup");
 347         } else
 348                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 349                     i, ScreenCount(display));
 350 }
 351
 352 int
 353 varmatch(char *var, char *name, int *index)
 354 {
 355         char                    *p, buf[5];
 356         int                     i;
 357
 358         i = strncmp(var, name, 255);
 359         if (index == NULL)
 360                 return (i);
 361
 362         *index = -1;
 363         if (i <= 0)
 364                 return (i);
 365         p = var + strlen(name);
 366         if (*p++ != '[')
 367                 return (i);
 368         bzero(buf, sizeof buf);
 369         i = 0;
 370         while (isdigit(*p) && i < sizeof buf)
 371                 buf[i++] = *p++;
 372         if (i == 0 || i >= sizeof buf || *p != ']')
 373                 return (1);
 374         *index = strtonum(buf, 0, 99, NULL);
 375         return (0);
 376 }
 377
 378 /* conf file stuff */
 379 #define SWM_CONF_WS     "\n= \t"
 380 #define SWM_CONF_FILE   "scrotwm.conf"
 381 int
 382 conf_load(char *filename)
 383 {
 384         FILE                    *config;
 385         char                    *line, *cp, *var, *val;
 386         size_t                  len, lineno = 0;
 387         int                     i, sc;
 388
 389         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 390
 391         if (filename == NULL)
 392                 return (1);
 393
 394         if ((config = fopen(filename, "r")) == NULL)
 395                 return (1);
 396
 397         for (sc = ScreenCount(display);;) {
 398                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 399                         if (feof(config))
 400                                 break;
 401                 cp = line;
 402                 cp += (long)strspn(cp, SWM_CONF_WS);
 403                 if (cp[0] == '\0') {
 404                         /* empty line */
 405                         free(line);
 406                         continue;
 407                 }
 408                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 409                         break;
 410                 cp += (long)strspn(cp, SWM_CONF_WS);
 411                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 412                         break;
 413
 414                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 415                 switch (var[0]) {
 416                 case 'b':
 417                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 418                                 bar_enabled = atoi(val);
 419                         else if (!varmatch(var, "bar_border", &i))
 420                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 421                         else if (!varmatch(var, "bar_color", &i))
 422                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 423                         else if (!varmatch(var, "bar_font_color", &i))
 424                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 425                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 426                                 asprintf(&bar_fonts[0], "%s", val);
 427                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 428                                 asprintf(&bar_argv[0], "%s", val);
 429                         else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 430                                 bar_delay = atoi(val);
 431                         else
 432                                 goto bad;
 433                         break;
 434
 435                 case 'c':
 436                         if (!varmatch(var, "color_focus", &i))
 437                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 438                         else if (!varmatch(var, "color_unfocus", &i))
 439                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 440                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 441                                 cycle_visible = atoi(val);
 442                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 443                                 cycle_visible = atoi(val);
 444                         else
 445                                 goto bad;
 446                         break;
 447
 448                 case 'd':
 449                         if (!strncmp(var, "dialog_ratio",
 450                             strlen("dialog_ratio"))) {
 451                                 dialog_ratio = atof(val);
 452                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 453                                         dialog_ratio = .6;
 454                         } else
 455                                 goto bad;
 456                         break;
 457
 458                 case 's':
 459                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 460                                 asprintf(&spawn_term[0], "%s", val); /* XXX args? */
 461                         if (!strncmp(var, "screenshot_enabled",
 462                             strlen("screenshot_enabled")))
 463                                 ss_enabled = atoi(val);
 464                         break;
 465                 default:
 466                         goto bad;
 467                 }
 468                 free(line);
 469         }
 470
 471         fclose(config);
 472         return (0);
 473
 474 bad:
 475         errx(1, "invalid conf file entry: %s=%s", var, val);
 476 }
 477
 478 void
 479 socket_setnonblock(int fd)
 480 {
 481         int                     flags;
 482
 483         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 484                 err(1, "fcntl F_GETFL");
 485         flags |= O_NONBLOCK;
 486         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 487                 err(1, "fcntl F_SETFL");
 488 }
 489
 490 void
 491 bar_print(struct swm_region *r, char *s)
 492 {
 493         XClearWindow(display, r->bar_window);
 494         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 495         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 496             strlen(s));
 497 }
 498
 499 void
 500 bar_extra_stop(void)
 501 {
 502         if (bar_pipe[0]) {
 503                 close(bar_pipe[0]);
 504                 bzero(bar_pipe, sizeof bar_pipe);
 505         }
 506         if (bar_pid) {
 507                 kill(bar_pid, SIGTERM);
 508                 bar_pid = 0;
 509         }
 510         strlcpy(bar_ext, "", sizeof bar_ext);
 511         bar_extra = 0;
 512 }
 513
 514 void
 515 bar_update(void)
 516 {
 517         time_t                  tmt;
 518         struct tm               tm;
 519         struct swm_region       *r;
 520         int                     i, x;
 521         size_t                  len;
 522         char                    s[SWM_BAR_MAX];
 523         char                    loc[SWM_BAR_MAX];
 524         char                    *b;
 525
 526         if (bar_enabled == 0)
 527                 return;
 528
 529         if (bar_extra && bar_extra_running) {
 530                 /* ignore short reads; it'll correct itself */
 531                 while ((b = fgetln(stdin, &len)) != NULL)
 532                         if (b && b[len - 1] == '\n') {
 533                                 b[len - 1] = '\0';
 534                                 strlcpy(bar_ext, b, sizeof bar_ext);
 535                         }
 536                 if (b == NULL && errno != EAGAIN) {
 537                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 538                             errno, strerror(errno));
 539                         bar_extra_stop();
 540                 }
 541         } else
 542                 strlcpy(bar_ext, "", sizeof bar_ext);
 543
 544         time(&tmt);
 545         localtime_r(&tmt, &tm);
 546         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 547         for (i = 0; i < ScreenCount(display); i++) {
 548                 x = 1;
 549                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 550                         snprintf(loc, sizeof loc, "%s     %d:%d    %s",
 551                             s, x++, r->ws->idx + 1, bar_ext);
 552                         bar_print(r, loc);
 553                 }
 554         }
 555         XSync(display, False);
 556         alarm(bar_delay);
 557 }
 558
 559 void
 560 bar_signal(int sig)
 561 {
 562         bar_alarm = 1;
 563 }
 564
 565 void
 566 bar_toggle(struct swm_region *r, union arg *args)
 567 {
 568         struct swm_region       *tmpr;
 569         int                     i, j, sc = ScreenCount(display);
 570
 571         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 572
 573         if (bar_enabled) {
 574                 for (i = 0; i < sc; i++)
 575                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 576                                 XUnmapWindow(display, tmpr->bar_window);
 577         } else {
 578                 for (i = 0; i < sc; i++)
 579                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 580                                 XMapRaised(display, tmpr->bar_window);
 581         }
 582         bar_enabled = !bar_enabled;
 583         XSync(display, False);
 584         for (i = 0; i < sc; i++)
 585                 for (j = 0; j < SWM_WS_MAX; j++)
 586                         screens[i].ws[j].restack = 1;
 587
 588         stack();
 589         /* must be after stack */
 590         for (i = 0; i < sc; i++)
 591                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 592                         bar_update();
 593 }
 594
 595 void
 596 bar_refresh(void)
 597 {
 598         XSetWindowAttributes    wa;
 599         struct swm_region       *r;
 600         int                     i;
 601
 602         /* do this here because the conf file is in memory */
 603         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 604                 /* launch external status app */
 605                 bar_extra_running = 1;
 606                 if (pipe(bar_pipe) == -1)
 607                         err(1, "pipe error");
 608                 socket_setnonblock(bar_pipe[0]);
 609                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 610                 if (dup2(bar_pipe[0], 0) == -1)
 611                         errx(1, "dup2");
 612                 if (dup2(bar_pipe[1], 1) == -1)
 613                         errx(1, "dup2");
 614                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 615                         err(1, "could not disable SIGPIPE");
 616                 switch (bar_pid = fork()) {
 617                 case -1:
 618                         err(1, "cannot fork");
 619                         break;
 620                 case 0: /* child */
 621                         close(bar_pipe[0]);
 622                         execvp(bar_argv[0], bar_argv);
 623                         err(1, "%s external app failed", bar_argv[0]);
 624                         break;
 625                 default: /* parent */
 626                         close(bar_pipe[1]);
 627                         break;
 628                 }
 629         }
 630
 631         bzero(&wa, sizeof wa);
 632         for (i = 0; i < ScreenCount(display); i++)
 633                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 634                         wa.border_pixel =
 635                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 636                         wa.background_pixel =
 637                             screens[i].c[SWM_S_COLOR_BAR].color;
 638                         XChangeWindowAttributes(display, r->bar_window,
 639                             CWBackPixel | CWBorderPixel, &wa);
 640                 }
 641         bar_update();
 642 }
 643
 644 void
 645 bar_setup(struct swm_region *r)
 646 {
 647         int                     i;
 648
 649         for (i = 0; bar_fonts[i] != NULL; i++) {
 650                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 651                 if (bar_fs) {
 652                         bar_fidx = i;
 653                         break;
 654                 }
 655         }
 656         if (bar_fonts[i] == NULL)
 657                         errx(1, "couldn't load font");
 658         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 659
 660         r->bar_window = XCreateSimpleWindow(display,
 661             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 662             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 663             r->s->c[SWM_S_COLOR_BAR].color);
 664         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 665         XSetFont(display, bar_gc, bar_fs->fid);
 666         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 667         if (bar_enabled)
 668                 XMapRaised(display, r->bar_window);
 669         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 670
 671         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 672                 err(1, "could not install bar_signal");
 673         bar_refresh();
 674 }
 675
 676 void
 677 config_win(struct ws_win *win)
 678 {
 679         XConfigureEvent         ce;
 680
 681         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 682             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 683         ce.type = ConfigureNotify;
 684         ce.display = display;
 685         ce.event = win->id;
 686         ce.window = win->id;
 687         ce.x = win->g.x;
 688         ce.y = win->g.y;
 689         ce.width = win->g.w;
 690         ce.height = win->g.h;
 691         ce.border_width = 1; /* XXX store this! */
 692         ce.above = None;
 693         ce.override_redirect = False;
 694         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 695 }
 696
 697 int
 698 count_win(struct workspace *ws, int count_transient)
 699 {
 700         struct ws_win           *win;
 701         int                     count = 0;
 702
 703         TAILQ_FOREACH(win, &ws->winlist, entry) {
 704                 if (count_transient == 0 && win->floating)
 705                         continue;
 706                 if (count_transient == 0 && win->transient)
 707                         continue;
 708                 count++;
 709         }
 710         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 711
 712         return (count);
 713 }
 714
 715 void
 716 quit(struct swm_region *r, union arg *args)
 717 {
 718         DNPRINTF(SWM_D_MISC, "quit\n");
 719         running = 0;
 720 }
 721
 722 void
 723 restart(struct swm_region *r, union arg *args)
 724 {
 725         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 726
 727         /* disable alarm because the following code may not be interrupted */
 728         alarm(0);
 729         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 730                 errx(1, "can't disable alarm");
 731
 732         bar_extra_stop();
 733         bar_extra = 1;
 734         XCloseDisplay(display);
 735         execvp(start_argv[0], start_argv);
 736         fprintf(stderr, "execvp failed\n");
 737         perror(" failed");
 738         quit(NULL, NULL);
 739 }
 740
 741 struct swm_region *
 742 root_to_region(Window root)
 743 {
 744         struct swm_region       *r;
 745         Window                  rr, cr;
 746         int                     i, x, y, wx, wy;
 747         unsigned int            mask;
 748
 749         for (i = 0; i < ScreenCount(display); i++)
 750                 if (screens[i].root == root)
 751                         break;
 752
 753         if (XQueryPointer(display, screens[i].root,
 754             &rr, &cr, &x, &y, &wx, &wy, &mask) == False) {
 755                 /* if we can't query the pointer, grab the first region */
 756                 r = TAILQ_FIRST(&screens[i].rl);
 757         } else {
 758                 /* otherwise, choose a region based on pointer location */
 759                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 760                         if (x >= X(r) && x <= X(r) + WIDTH(r) &&
 761                             y >= Y(r) && y <= Y(r) + HEIGHT(r))
 762                                 break;
 763                 }
 764
 765                 if (r == NULL)
 766                         r = TAILQ_FIRST(&screens[i].rl);
 767         }
 768         return (r);
 769 }
 770
 771 struct ws_win *
 772 find_window(Window id)
 773 {
 774         struct ws_win           *win;
 775         int                     i, j;
 776
 777         for (i = 0; i < ScreenCount(display); i++)
 778                 for (j = 0; j < SWM_WS_MAX; j++)
 779                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 780                                 if (id == win->id)
 781                                         return (win);
 782         return (NULL);
 783 }
 784
 785 void
 786 spawn(struct swm_region *r, union arg *args)
 787 {
 788         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 789         /*
 790          * The double-fork construct avoids zombie processes and keeps the code
 791          * clean from stupid signal handlers.
 792          */
 793         if (fork() == 0) {
 794                 if (fork() == 0) {
 795                         char *ret;
 796                         if (display)
 797                                 close(ConnectionNumber(display));
 798                         setenv("LD_PRELOAD", SWM_LIB, 1);
 799                         if (asprintf(&ret, "%d", r->ws->idx))
 800                                 setenv("_SWM_WS", ret, 1);
 801                         if (asprintf(&ret, "%d", getpid()))
 802                                 setenv("_SWM_PID", ret, 1);
 803                         setsid();
 804                         execvp(args->argv[0], args->argv);
 805                         fprintf(stderr, "execvp failed\n");
 806                         perror(" failed");
 807                 }
 808                 exit(0);
 809         }
 810         wait(0);
 811 }
 812
 813 void
 814 spawnmenu(struct swm_region *r, union arg *args)
 815 {
 816         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
 817
 818         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
 819         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
 820         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
 821         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
 822         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
 823
 824         spawn(r, args);
 825 }
 826
 827 void
 828 unfocus_all(void)
 829 {
 830         struct ws_win           *win;
 831         int                     i, j;
 832
 833         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
 834
 835         for (i = 0; i < ScreenCount(display); i++)
 836                 for (j = 0; j < SWM_WS_MAX; j++)
 837                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
 838                                 if (win->ws->r == NULL)
 839                                         continue;
 840                                 grabbuttons(win, 0);
 841                                 XSetWindowBorder(display, win->id,
 842                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
 843                                 win->got_focus = 0;
 844                                 win->ws->focus = NULL;
 845                                 cur_focus = NULL;
 846                         }
 847 }
 848
 849 void
 850 focus_win(struct ws_win *win)
 851 {
 852         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
 853
 854         if (win == NULL)
 855                 return;
 856
 857         unfocus_all();
 858         win->ws->focus = win;
 859         if (win->ws->r != NULL) {
 860                 cur_focus = win;
 861                 if (!win->got_focus) {
 862                         XSetWindowBorder(display, win->id,
 863                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
 864                         grabbuttons(win, 1);
 865                 }
 866                 win->got_focus = 1;
 867                 XSetInputFocus(display, win->id,
 868                     RevertToPointerRoot, CurrentTime);
 869         }
 870 }
 871
 872 void
 873 switchws(struct swm_region *r, union arg *args)
 874 {
 875         int                     wsid = args->id;
 876         struct swm_region       *this_r, *other_r;
 877         struct ws_win           *win;
 878         struct workspace        *new_ws, *old_ws;
 879
 880         this_r = r;
 881         old_ws = this_r->ws;
 882         new_ws = &this_r->s->ws[wsid];
 883
 884         DNPRINTF(SWM_D_WS, "switchws screen %d region %dx%d+%d+%d: "
 885             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
 886             old_ws->idx, wsid);
 887
 888         if (new_ws == old_ws)
 889                 return;
 890
 891         other_r = new_ws->r;
 892         if (!other_r) {
 893                 /* if the other workspace is hidden, switch windows */
 894                 /* map new window first to prevent ugly blinking */
 895                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
 896                         XMapRaised(display, win->id);
 897
 898                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
 899                         XUnmapWindow(display, win->id);
 900
 901                 old_ws->r = NULL;
 902                 old_ws->restack = 1;
 903         } else {
 904                 other_r->ws = old_ws;
 905                 old_ws->r = other_r;
 906         }
 907         this_r->ws = new_ws;
 908         new_ws->r = this_r;
 909
 910         ignore_enter = 1;
 911         /* set focus */
 912         if (new_ws->focus)
 913                 focus_win(new_ws->focus);
 914         stack();
 915         bar_update();
 916 }
 917
 918 void
 919 cyclews(struct swm_region *r, union arg *args)
 920 {
 921         union                   arg a;
 922         struct swm_screen       *s = r->s;
 923
 924         DNPRINTF(SWM_D_WS, "cyclews id %d "
 925             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 926             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 927
 928         a.id = r->ws->idx;
 929
 930         do {
 931                 switch (args->id) {
 932                 case SWM_ARG_ID_CYCLEWS_UP:
 933                         if (a.id < SWM_WS_MAX - 1)
 934                                 a.id++;
 935                         else
 936                                 a.id = 0;
 937                         break;
 938                 case SWM_ARG_ID_CYCLEWS_DOWN:
 939                         if (a.id > 0)
 940                                 a.id--;
 941                         else
 942                                 a.id = SWM_WS_MAX - 1;
 943                         break;
 944                 default:
 945                         return;
 946                 };
 947
 948                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
 949                         continue;
 950                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
 951                         continue;
 952
 953                 switchws(r, &a);
 954         } while (a.id != r->ws->idx);
 955 }
 956
 957 void
 958 swapwin(struct swm_region *r, union arg *args)
 959 {
 960         struct ws_win           *target;
 961         struct ws_win_list      *wl;
 962
 963
 964         DNPRINTF(SWM_D_WS, "swapwin id %d "
 965             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 966             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 967         if (cur_focus == NULL)
 968                 return;
 969
 970         wl = &cur_focus->ws->winlist;
 971
 972         switch (args->id) {
 973         case SWM_ARG_ID_SWAPPREV:
 974                 target = TAILQ_PREV(cur_focus, ws_win_list, entry);
 975                 TAILQ_REMOVE(wl, cur_focus, entry);
 976                 if (target == NULL)
 977                         TAILQ_INSERT_TAIL(wl, cur_focus, entry);
 978                 else
 979                         TAILQ_INSERT_BEFORE(target, cur_focus, entry);
 980                 break;
 981         case SWM_ARG_ID_SWAPNEXT:
 982                 target = TAILQ_NEXT(cur_focus, entry);
 983                 TAILQ_REMOVE(wl, cur_focus, entry);
 984                 if (target == NULL)
 985                         TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 986                 else
 987                         TAILQ_INSERT_AFTER(wl, target, cur_focus, entry);
 988                 break;
 989         case SWM_ARG_ID_SWAPMAIN:
 990                 target = TAILQ_FIRST(wl);
 991                 if (target == cur_focus)
 992                         return;
 993                 TAILQ_REMOVE(wl, target, entry);
 994                 TAILQ_INSERT_BEFORE(cur_focus, target, entry);
 995                 TAILQ_REMOVE(wl, cur_focus, entry);
 996                 TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 997                 break;
 998         default:
 999                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
1000                 return;
1001         }
1002
1003         ignore_enter = 2;
1004         stack();
1005 }
1006
1007 void
1008 focus(struct swm_region *r, union arg *args)
1009 {
1010         struct ws_win           *winfocus, *winlostfocus;
1011         struct ws_win_list      *wl;
1012
1013         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
1014         if (cur_focus == NULL)
1015                 return;
1016
1017         wl = &cur_focus->ws->winlist;
1018
1019         winlostfocus = cur_focus;
1020
1021         switch (args->id) {
1022         case SWM_ARG_ID_FOCUSPREV:
1023                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1024                 if (winfocus == NULL)
1025                         winfocus = TAILQ_LAST(wl, ws_win_list);
1026                 break;
1027
1028         case SWM_ARG_ID_FOCUSNEXT:
1029                 winfocus = TAILQ_NEXT(cur_focus, entry);
1030                 if (winfocus == NULL)
1031                         winfocus = TAILQ_FIRST(wl);
1032                 break;
1033
1034         case SWM_ARG_ID_FOCUSMAIN:
1035                 winfocus = TAILQ_FIRST(wl);
1036                 break;
1037
1038         default:
1039                 return;
1040         }
1041
1042         if (winfocus == winlostfocus)
1043                 return;
1044
1045         XMapRaised(display, winfocus->id);
1046         focus_win(winfocus);
1047         XSync(display, False);
1048 }
1049
1050 void
1051 cycle_layout(struct swm_region *r, union arg *args)
1052 {
1053         struct workspace        *ws = r->ws;
1054
1055         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1056
1057         ws->cur_layout++;
1058         if (ws->cur_layout->l_stack == NULL)
1059                 ws->cur_layout = &layouts[0];
1060         ignore_enter = 1;
1061
1062         stack();
1063 }
1064
1065 void
1066 stack_config(struct swm_region *r, union arg *args)
1067 {
1068         struct workspace        *ws = r->ws;
1069
1070         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1071             args->id, ws->idx);
1072
1073         if (ws->cur_layout->l_config != NULL)
1074                 ws->cur_layout->l_config(ws, args->id);
1075
1076         if (args->id != SWM_ARG_ID_STACKINIT);
1077                 stack();
1078 }
1079
1080 void
1081 stack(void) {
1082         struct swm_geometry     g;
1083         struct swm_region       *r;
1084         int                     i, j;
1085
1086         DNPRINTF(SWM_D_STACK, "stack\n");
1087
1088         for (i = 0; i < ScreenCount(display); i++) {
1089                 j = 0;
1090                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1091                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1092                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1093
1094                         /* start with screen geometry, adjust for bar */
1095                         g = r->g;
1096                         g.w -= 2;
1097                         g.h -= 2;
1098                         if (bar_enabled) {
1099                                 g.y += bar_height;
1100                                 g.h -= bar_height;
1101                         }
1102
1103                         r->ws->restack = 0;
1104                         r->ws->cur_layout->l_stack(r->ws, &g);
1105                 }
1106         }
1107         XSync(display, False);
1108 }
1109
1110 void
1111 stack_floater(struct ws_win *win, struct swm_region *r)
1112 {
1113         unsigned int            mask;
1114         XWindowChanges          wc;
1115
1116         bzero(&wc, sizeof wc);
1117         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1118         wc.border_width = 1;
1119         if (win->transient) {
1120                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1121                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1122         }
1123         wc.width = win->g.w;
1124         wc.height = win->g.h;
1125         wc.x = (WIDTH(r) - win->g.w) / 2;
1126         wc.y = (HEIGHT(r) - win->g.h) / 2;
1127
1128         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1129             win->id, wc.x, wc.y, wc.width, wc.height);
1130
1131         XConfigureWindow(display, win->id, mask, &wc);
1132 }
1133
1134 #define SWAPXY(g)       do {                            \
1135         int tmp;                                        \
1136         tmp = (g)->y; (g)->y = (g)->x; (g)->x = tmp;    \
1137         tmp = (g)->h; (g)->h = (g)->w; (g)->w = tmp;    \
1138 } while (0)
1139 void
1140 stack_master(struct workspace *ws, struct swm_geometry *g, int rot, int flip)
1141 {
1142         XWindowChanges          wc;
1143         struct swm_geometry     win_g, r_g = *g;
1144         struct ws_win           *win, *winfocus;
1145         int                     i, j, w_inc, h_inc, w_base, h_base;
1146         int                     hrh, extra, h_slice, last_h = 0;
1147         int                     split, colno, winno, mwin, msize, mscale;
1148         int                     remain, missing, v_slice;;
1149         unsigned int            mask;
1150
1151         DNPRINTF(SWM_D_STACK, "stack_master: workspace: %d\n rot=%s flip=%s",
1152             ws->idx, rot ? "yes" : "no", flip ? "yes" : "no");
1153
1154         if ((winno = count_win(ws, 0)) == 0)
1155                 return;
1156
1157         if (ws->focus == NULL)
1158                 ws->focus = TAILQ_FIRST(&ws->winlist);
1159         winfocus = cur_focus ? cur_focus : ws->focus;
1160
1161         win = TAILQ_FIRST(&ws->winlist);
1162         if (rot) {
1163                 w_inc = win->sh.width_inc;
1164                 w_base = win->sh.base_width;
1165                 mwin = ws->l_state.horizontal_mwin;
1166                 mscale = ws->l_state.horizontal_msize;
1167                 SWAPXY(&r_g);
1168         } else {
1169                 w_inc = win->sh.height_inc;
1170                 w_base = win->sh.base_height;
1171                 mwin = ws->l_state.vertical_mwin;
1172                 mscale = ws->l_state.vertical_msize;
1173         }
1174         win_g = r_g;
1175
1176         h_slice = r_g.h / SWM_H_SLICE;
1177         if (mwin && winno > mwin) {
1178                 v_slice = r_g.w / SWM_V_SLICE;
1179
1180                 split = mwin;
1181                 colno = split;
1182                 msize = v_slice * mscale;
1183
1184                 if (w_inc > 1 && w_inc < v_slice) {
1185                         /* adjust for window's requested size increment */
1186                         remain = (win_g.w - w_base) % w_inc;
1187                         missing = w_inc - remain;
1188
1189                         if (missing <= extra || j == 0) {
1190                                 extra -= missing;
1191                                 win_g.w += missing;
1192                         } else {
1193                                 win_g.w -= remain;
1194                                 extra += remain;
1195                         }
1196                 }
1197
1198                 win_g.w = msize;
1199                 if (flip)
1200                         win_g.x += r_g.w - msize;
1201         } else {
1202                 colno = winno;
1203                 split = 0;
1204         }
1205         hrh = r_g.h / colno;
1206         extra = r_g.h - (colno * hrh);
1207         win_g.h = hrh - 2;
1208
1209         i = j = 0;
1210         TAILQ_FOREACH(win, &ws->winlist, entry) {
1211                 if (split && i == split) {
1212                         colno = winno - split;
1213                         hrh = (r_g.h / colno);
1214                         extra = r_g.h - (colno * hrh);
1215                         if (flip)
1216                                 win_g.x = r_g.x;
1217                         else
1218                                 win_g.x += msize + 2;
1219                         win_g.w = r_g.w - (msize + 2);
1220                         j = 0;
1221                 }
1222                 win_g.h = hrh - 2;
1223                 if (rot) {
1224                         h_inc = win->sh.width_inc;
1225                         h_base = win->sh.base_width;
1226                 } else {
1227                         h_inc = win->sh.height_inc;
1228                         h_base = win->sh.base_height;
1229                 }
1230                 if (j == colno - 1) {
1231                         win_g.h = hrh + extra;
1232                 } else if (h_inc > 1 && h_inc < h_slice) {
1233                         /* adjust for window's requested size increment */
1234                         remain = (win_g.h - h_base) % h_inc;
1235                         missing = h_inc - remain;
1236
1237                         if (missing <= extra || j == 0) {
1238                                 extra -= missing;
1239                                 win_g.h += missing;
1240                         } else {
1241                                 win_g.h -= remain;
1242                                 extra += remain;
1243                         }
1244                 }
1245
1246                 if (j == 0)
1247                         win_g.y = r_g.y;
1248                 else
1249                         win_g.y += last_h + 2;
1250
1251                 if (win->transient != 0 || win->floating != 0)
1252                         stack_floater(win, ws->r);
1253                 else {
1254                         bzero(&wc, sizeof wc);
1255                         wc.border_width = 1;
1256                         if (rot) {
1257                                 win->g.x = wc.x = win_g.y;
1258                                 win->g.y = wc.y = win_g.x;
1259                                 win->g.w = wc.width = win_g.h;
1260                                 win->g.h = wc.height = win_g.w;
1261                         } else {
1262                                 win->g.x = wc.x = win_g.x;
1263                                 win->g.y = wc.y = win_g.y;
1264                                 win->g.w = wc.width = win_g.w;
1265                                 win->g.h = wc.height = win_g.h;
1266                         }
1267                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1268                         XConfigureWindow(display, win->id, mask, &wc);
1269                         /*
1270                         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);
1271                         */
1272                 }
1273
1274                 XMapRaised(display, win->id);
1275                 last_h = win_g.h;
1276                 i++;
1277                 j++;
1278         }
1279
1280         if (winfocus)
1281                 focus_win(winfocus); /* has to be done outside of the loop */
1282 }
1283
1284 void
1285 vertical_config(struct workspace *ws, int id)
1286 {
1287         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1288
1289         switch (id) {
1290         case SWM_ARG_ID_STACKRESET:
1291         case SWM_ARG_ID_STACKINIT:
1292                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1293                 ws->l_state.vertical_mwin = 1;
1294                 break;
1295         case SWM_ARG_ID_MASTERSHRINK:
1296                 if (ws->l_state.vertical_msize > 1)
1297                         ws->l_state.vertical_msize--;
1298                 break;
1299         case SWM_ARG_ID_MASTERGROW:
1300                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1301                         ws->l_state.vertical_msize++;
1302                 break;
1303         case SWM_ARG_ID_MASTERADD:
1304                 ws->l_state.vertical_mwin++;
1305                 break;
1306         case SWM_ARG_ID_MASTERDEL:
1307                 if (ws->l_state.vertical_mwin > 0)
1308                         ws->l_state.vertical_mwin--;
1309                 break;
1310         default:
1311                 return;
1312         }
1313 }
1314
1315 void
1316 vertical_stack(struct workspace *ws, struct swm_geometry *g)
1317 {
1318         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1319
1320         stack_master(ws, g, 0, 0);
1321 }
1322
1323 void
1324 horizontal_config(struct workspace *ws, int id)
1325 {
1326         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1327
1328         switch (id) {
1329         case SWM_ARG_ID_STACKRESET:
1330         case SWM_ARG_ID_STACKINIT:
1331                 ws->l_state.horizontal_mwin = 1;
1332                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1333                 break;
1334         case SWM_ARG_ID_MASTERSHRINK:
1335                 if (ws->l_state.horizontal_msize > 1)
1336                         ws->l_state.horizontal_msize--;
1337                 break;
1338         case SWM_ARG_ID_MASTERGROW:
1339                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1340                         ws->l_state.horizontal_msize++;
1341                 break;
1342         case SWM_ARG_ID_MASTERADD:
1343                 ws->l_state.horizontal_mwin++;
1344                 break;
1345         case SWM_ARG_ID_MASTERDEL:
1346                 if (ws->l_state.horizontal_mwin > 0)
1347                         ws->l_state.horizontal_mwin--;
1348                 break;
1349         default:
1350                 return;
1351         }
1352 }
1353
1354 void
1355 horizontal_stack(struct workspace *ws, struct swm_geometry *g)
1356 {
1357         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1358
1359         stack_master(ws, g, 1, 0);
1360 }
1361
1362 /* fullscreen view */
1363 void
1364 max_stack(struct workspace *ws, struct swm_geometry *g) {
1365         XWindowChanges          wc;
1366         struct swm_geometry     gg = *g;
1367         struct ws_win           *win, *winfocus;
1368         unsigned int            mask;
1369
1370         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1371
1372         if (count_win(ws, 0) == 0)
1373                 return;
1374
1375         if (ws->focus == NULL)
1376                 ws->focus = TAILQ_FIRST(&ws->winlist);
1377         winfocus = cur_focus ? cur_focus : ws->focus;
1378
1379         TAILQ_FOREACH(win, &ws->winlist, entry) {
1380                 if (win->transient != 0 || win->floating != 0) {
1381                         if (win == ws->focus) {
1382                                 /* XXX maximize? */
1383                                 stack_floater(win, ws->r);
1384                                 XMapRaised(display, win->id);
1385                         } else
1386                                 XUnmapWindow(display, win->id);
1387                 } else {
1388                         bzero(&wc, sizeof wc);
1389                         wc.border_width = 1;
1390                         win->g.x = wc.x = gg.x;
1391                         win->g.y = wc.y = gg.y;
1392                         win->g.w = wc.width = gg.w;
1393                         win->g.h = wc.height = gg.h;
1394                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1395                         XConfigureWindow(display, win->id, mask, &wc);
1396
1397                         if (win == ws->focus) {
1398                                 XMapRaised(display, win->id);
1399                         } else
1400                                 XUnmapWindow(display, win->id);
1401                 }
1402         }
1403
1404         if (winfocus)
1405                 focus_win(winfocus); /* has to be done outside of the loop */
1406 }
1407
1408 void
1409 send_to_ws(struct swm_region *r, union arg *args)
1410 {
1411         int                     wsid = args->id;
1412         struct ws_win           *win = cur_focus;
1413         struct workspace        *ws, *nws;
1414         Atom                    ws_idx_atom = 0;
1415         unsigned char           ws_idx_str[SWM_PROPLEN];
1416
1417         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1418
1419         ws = win->ws;
1420         nws = &win->s->ws[wsid];
1421
1422         XUnmapWindow(display, win->id);
1423
1424         /* find a window to focus */
1425         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1426         if (ws->focus == NULL)
1427                 ws->focus = TAILQ_FIRST(&ws->winlist);
1428         if (ws->focus == win)
1429                 ws->focus = NULL;
1430
1431         TAILQ_REMOVE(&ws->winlist, win, entry);
1432
1433         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1434         win->ws = nws;
1435
1436         /* Try to update the window's workspace property */
1437         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1438         if (ws_idx_atom &&
1439             snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
1440                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1441                     ws_idx_str);
1442                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1443                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1444         }
1445
1446         if (count_win(nws, 1) == 1)
1447                 nws->focus = win;
1448         ws->restack = 1;
1449         nws->restack = 1;
1450
1451         stack();
1452 }
1453
1454 void
1455 wkill(struct swm_region *r, union arg *args)
1456 {
1457         DNPRINTF(SWM_D_MISC, "wkill\n");
1458         if(r->ws->focus != NULL)
1459                 XKillClient(display, r->ws->focus->id);
1460 }
1461
1462 void
1463 screenshot(struct swm_region *r, union arg *args)
1464 {
1465         union arg                       a;
1466
1467         DNPRINTF(SWM_D_MISC, "screenshot\n");
1468
1469         if (ss_enabled == 0)
1470                 return;
1471
1472         switch (args->id) {
1473         case SWM_ARG_ID_SS_ALL:
1474                 spawn_screenshot[1] = "-m";
1475                 break;
1476         case SWM_ARG_ID_SS_WINDOW:
1477                 spawn_screenshot[1] = "-s"; /* XXX doesn't work with scrot */
1478                 break;
1479         default:
1480                 return;
1481         }
1482         a.argv = spawn_screenshot;
1483         spawn(r, &a);
1484 }
1485
1486 /* key definitions */
1487 struct key {
1488         unsigned int            mod;
1489         KeySym                  keysym;
1490         void                    (*func)(struct swm_region *r, union arg *);
1491         union arg               args;
1492 } keys[] = {
1493         /* modifier             key     function                argument */
1494         { MODKEY,               XK_space,       cycle_layout,   {0} },
1495         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1496         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1497         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1498         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1499         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1500         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1501         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1502         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1503         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1504         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1505         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1506         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1507         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1508         { MODKEY,               XK_q,           restart,        {0} },
1509         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1510         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1511         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1512         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1513         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1514         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1515         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1516         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1517         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1518         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1519         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1520         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1521         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1522         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1523         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1524         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1525         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1526         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1527         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1528         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1529         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1530         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1531         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1532         { MODKEY,               XK_b,           bar_toggle,     {0} },
1533         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1534         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1535         { MODKEY | ShiftMask,   XK_x,           wkill,          {0} },
1536         { MODKEY,               XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_ALL} },
1537         { MODKEY | ShiftMask,   XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_WINDOW} },
1538 };
1539
1540 void
1541 click(struct swm_region *r, union arg *args)
1542 {
1543         DNPRINTF(SWM_D_MOUSE, "click: button: %d\n", args->id);
1544
1545         switch (args->id) {
1546         case Button1:
1547                 break;
1548         case Button2:
1549                 break;
1550         case Button3:
1551                 break;
1552         default:
1553                 return;
1554         }
1555 }
1556
1557 /* mouse */
1558 enum { client_click, root_click };
1559 struct button {
1560         unsigned int            action;
1561         unsigned int            mask;
1562         unsigned int            button;
1563         void                    (*func)(struct swm_region *r, union arg *);
1564         union arg               args;
1565 } buttons[] = {
1566           /* action             key             mouse button    func            args */
1567         { client_click,         MODKEY,         Button1,        click, {.id=Button1} },
1568 };
1569
1570 void
1571 updatenumlockmask(void)
1572 {
1573         unsigned int            i, j;
1574         XModifierKeymap         *modmap;
1575
1576         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1577         numlockmask = 0;
1578         modmap = XGetModifierMapping(display);
1579         for (i = 0; i < 8; i++)
1580                 for (j = 0; j < modmap->max_keypermod; j++)
1581                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1582                           == XKeysymToKeycode(display, XK_Num_Lock))
1583                                 numlockmask = (1 << i);
1584
1585         XFreeModifiermap(modmap);
1586 }
1587
1588 void
1589 grabkeys(void)
1590 {
1591         unsigned int            i, j, k;
1592         KeyCode                 code;
1593         unsigned int            modifiers[] =
1594             { 0, LockMask, numlockmask, numlockmask | LockMask };
1595
1596         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1597         updatenumlockmask();
1598
1599         for (k = 0; k < ScreenCount(display); k++) {
1600                 if (TAILQ_EMPTY(&screens[k].rl))
1601                         continue;
1602                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1603                 for (i = 0; i < LENGTH(keys); i++) {
1604                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1605                                 for (j = 0; j < LENGTH(modifiers); j++)
1606                                         XGrabKey(display, code,
1607                                             keys[i].mod | modifiers[j],
1608                                             screens[k].root, True,
1609                                             GrabModeAsync, GrabModeAsync);
1610                 }
1611         }
1612 }
1613
1614 void
1615 grabbuttons(struct ws_win *win, int focused)
1616 {
1617         unsigned int            i, j;
1618         unsigned int            modifiers[] =
1619             { 0, LockMask, numlockmask, numlockmask|LockMask };
1620
1621         updatenumlockmask();
1622         XUngrabButton(display, AnyButton, AnyModifier, win->id);
1623         if(focused) {
1624                 for (i = 0; i < LENGTH(buttons); i++)
1625                         if (buttons[i].action == client_click)
1626                                 for (j = 0; j < LENGTH(modifiers); j++)
1627                                         XGrabButton(display, buttons[i].button,
1628                                             buttons[i].mask | modifiers[j],
1629                                             win->id, False, BUTTONMASK,
1630                                             GrabModeAsync, GrabModeSync, None,
1631                                             None);
1632         } else
1633                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
1634                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
1635 }
1636
1637 void
1638 expose(XEvent *e)
1639 {
1640         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1641 }
1642
1643 void
1644 keypress(XEvent *e)
1645 {
1646         unsigned int            i;
1647         KeySym                  keysym;
1648         XKeyEvent               *ev = &e->xkey;
1649
1650         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1651
1652         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1653         for (i = 0; i < LENGTH(keys); i++)
1654                 if (keysym == keys[i].keysym
1655                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1656                    && keys[i].func)
1657                         keys[i].func(root_to_region(ev->root),
1658                             &(keys[i].args));
1659 }
1660
1661 void
1662 buttonpress(XEvent *e)
1663 {
1664         XButtonPressedEvent     *ev = &e->xbutton;
1665
1666         struct ws_win           *win;
1667         int                     i, action;
1668
1669         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
1670
1671         action = root_click;
1672         if ((win = find_window(ev->window)) == NULL)
1673                 return;
1674         else {
1675                 focus_win(win);
1676                 action = client_click;
1677         }
1678
1679         for (i = 0; i < LENGTH(buttons); i++)
1680                 if (action == buttons[i].action && buttons[i].func &&
1681                     buttons[i].button == ev->button &&
1682                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
1683                         buttons[i].func(root_to_region(ev->root),
1684                         &buttons[i].args);
1685 }
1686
1687 void
1688 set_win_state(struct ws_win *win, long state)
1689 {
1690         long                    data[] = {state, None};
1691
1692         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
1693
1694         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
1695             (unsigned char *)data, 2);
1696 }
1697
1698 struct ws_win *
1699 manage_window(Window id)
1700 {
1701         Window                  trans;
1702         struct workspace        *ws;
1703         struct ws_win           *win;
1704         XClassHint              ch;
1705         int                     format;
1706         unsigned long           nitems, bytes;
1707         Atom                    ws_idx_atom = 0, type;
1708         unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
1709         struct swm_region       *r;
1710         long                    mask;
1711
1712         if ((win = find_window(id)) != NULL)
1713                         return (win);   /* already being managed */
1714
1715         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1716                 errx(1, "calloc: failed to allocate memory for new window");
1717
1718         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1719         if (ws_idx_atom)
1720                 XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
1721                     False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
1722
1723         XGetWindowAttributes(display, id, &win->wa);
1724         r = root_to_region(win->wa.root);
1725         /* If the window was managed before, put it in the same workspace */
1726         if (prop) {
1727                 int             ws_idx;
1728                 const char      *errstr;
1729
1730                 DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
1731                 ws_idx = strtonum(prop, 0, 9, &errstr);
1732                 if (errstr)
1733                         DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
1734                             errstr, prop);
1735                 ws = &r->s->ws[ws_idx];
1736         } else
1737                 ws = r->ws;
1738
1739         win->id = id;
1740         win->ws = ws;
1741         win->s = r->s;  /* this never changes */
1742         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
1743
1744         /* make new win focused */
1745         focus_win(win);
1746
1747         XGetTransientForHint(display, win->id, &trans);
1748         if (trans) {
1749                 win->transient = trans;
1750                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
1751                     (unsigned)win->id, win->transient);
1752         }
1753         win->g.w = win->wa.width;
1754         win->g.h = win->wa.height;
1755         win->g.x = win->wa.x;
1756         win->g.y = win->wa.y;
1757
1758         XGetWMNormalHints(display, win->id, &win->sh, &mask);
1759
1760         if (ws_idx_atom && prop == NULL &&
1761             snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
1762                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1763                     ws_idx_str);
1764                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1765                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1766         }
1767         XFree(prop);
1768
1769         /*
1770         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);
1771         */
1772
1773         /* XXX make this a table */
1774         bzero(&ch, sizeof ch);
1775         if (XGetClassHint(display, win->id, &ch)) {
1776                 /*fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name); */
1777                 if (!strcmp(ch.res_class, "MPlayer") && !strcmp(ch.res_name, "xv")) {
1778                         win->floating = 1;
1779                 }
1780                 if (ch.res_class)
1781                         XFree(ch.res_class);
1782                 if (ch.res_name)
1783                         XFree(ch.res_name);
1784         }
1785
1786         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
1787             PropertyChangeMask | StructureNotifyMask);
1788
1789         set_win_state(win, NormalState);
1790
1791         return (win);
1792 }
1793
1794 void
1795 configurerequest(XEvent *e)
1796 {
1797         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1798         struct ws_win           *win;
1799         int                     new = 0;
1800         XWindowChanges          wc;
1801
1802         if ((win = find_window(ev->window)) == NULL)
1803                 new = 1;
1804
1805         if (new) {
1806                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
1807                     ev->window);
1808                 /*
1809                 fprintf(stderr, "configurerequest: new window: %lu x %d y %d w %d h %d bw %d s %d sm %d\n",
1810                     ev->window, ev->x, ev->y, ev->width, ev->height, ev->border_width, ev->above, ev->detail);
1811                 */
1812                 bzero(&wc, sizeof wc);
1813                 wc.x = ev->x;
1814                 wc.y = ev->y;
1815                 wc.width = ev->width;
1816                 wc.height = ev->height;
1817                 wc.border_width = ev->border_width;
1818                 wc.sibling = ev->above;
1819                 wc.stack_mode = ev->detail;
1820                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
1821         } else {
1822                 /*
1823                 fprintf(stderr, "configurerequest: change window: %lu\n",
1824                     ev->window);
1825                 */
1826                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
1827                     ev->window);
1828                 if (win->floating) {
1829                         if (ev->value_mask & CWX)
1830                                 win->g.x = ev->x;
1831                         if (ev->value_mask & CWY)
1832                                 win->g.y = ev->y;
1833                         if (ev->value_mask & CWWidth)
1834                                 win->g.w = ev->width;
1835                         if (ev->value_mask & CWHeight)
1836                                 win->g.h = ev->height;
1837                         if (win->ws->r != NULL) {
1838                                 /* this seems to be full screen */
1839                                 if (win->g.w > WIDTH(win->ws->r)) {
1840                                         /* kill border */
1841                                         win->g.x -= 1;
1842                                         win->g.w += 1;
1843                                 }
1844                                 if (win->g.h > HEIGHT(win->ws->r)) {
1845                                         /* kill border */
1846                                         win->g.y -= 1;
1847                                         win->g.h += 1;
1848                                 }
1849                         }
1850                         if ((ev->value_mask & (CWX|CWY)) &&
1851                             !(ev->value_mask & (CWWidth|CWHeight)))
1852                                 config_win(win);
1853                         XMoveResizeWindow(display, win->id,
1854                             win->g.x, win->g.y, win->g.w, win->g.h);
1855                 } else
1856                         config_win(win);
1857         }
1858 }
1859
1860 void
1861 configurenotify(XEvent *e)
1862 {
1863         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1864             e->xconfigure.window);
1865 }
1866
1867 void
1868 destroynotify(XEvent *e)
1869 {
1870         struct ws_win           *win;
1871         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1872         struct workspace        *ws;
1873
1874         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1875
1876         if ((win = find_window(ev->window)) != NULL) {
1877                 ws = win->ws;
1878                 /* find a window to focus */
1879                 if (ws->focus == win)
1880                         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1881                 if (ws->focus == NULL)
1882                         ws->focus = TAILQ_FIRST(&ws->winlist);
1883                 if (ws->focus == win)
1884                         ws->focus = NULL;
1885                 if (cur_focus == win)
1886                         focus_win(ws->focus);
1887
1888                 TAILQ_REMOVE(&ws->winlist, win, entry);
1889                 set_win_state(win, WithdrawnState);
1890                 free(win);
1891         }
1892         stack();
1893 }
1894
1895 void
1896 enternotify(XEvent *e)
1897 {
1898         XCrossingEvent          *ev = &e->xcrossing;
1899         struct ws_win           *win;
1900
1901         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1902
1903         if (ignore_enter) {
1904                 /* eat event(r) to prevent autofocus */
1905                 ignore_enter--;
1906                 return;
1907         }
1908
1909         if ((win = find_window(ev->window)) != NULL)
1910                 focus_win(win);
1911 }
1912
1913 void
1914 focusin(XEvent *e)
1915 {
1916         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
1917 }
1918
1919 void
1920 mappingnotify(XEvent *e)
1921 {
1922         XMappingEvent           *ev = &e->xmapping;
1923
1924         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1925
1926         XRefreshKeyboardMapping(ev);
1927         if (ev->request == MappingKeyboard)
1928                 grabkeys();
1929 }
1930
1931 void
1932 maprequest(XEvent *e)
1933 {
1934         XMapRequestEvent        *ev = &e->xmaprequest;
1935         XWindowAttributes       wa;
1936
1937         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1938             e->xmaprequest.window);
1939
1940         if (!XGetWindowAttributes(display, ev->window, &wa))
1941                 return;
1942         if (wa.override_redirect)
1943                 return;
1944         manage_window(e->xmaprequest.window);
1945         stack();
1946 }
1947
1948 void
1949 propertynotify(XEvent *e)
1950 {
1951         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
1952             e->xproperty.window);
1953 }
1954
1955 void
1956 unmapnotify(XEvent *e)
1957 {
1958         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
1959 }
1960
1961 void
1962 visibilitynotify(XEvent *e)
1963 {
1964         int                     i;
1965         struct swm_region       *r;
1966
1967         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
1968             e->xvisibility.window);
1969         if (e->xvisibility.state == VisibilityUnobscured)
1970                 for (i = 0; i < ScreenCount(display); i++)
1971                         TAILQ_FOREACH(r, &screens[i].rl, entry)
1972                                 if (e->xvisibility.window == r->bar_window)
1973                                         bar_update();
1974 }
1975
1976 void                    (*handler[LASTEvent])(XEvent *) = {
1977                                 [Expose] = expose,
1978                                 [KeyPress] = keypress,
1979                                 [ButtonPress] = buttonpress,
1980                                 [ConfigureRequest] = configurerequest,
1981                                 [ConfigureNotify] = configurenotify,
1982                                 [DestroyNotify] = destroynotify,
1983                                 [EnterNotify] = enternotify,
1984                                 [FocusIn] = focusin,
1985                                 [MappingNotify] = mappingnotify,
1986                                 [MapRequest] = maprequest,
1987                                 [PropertyNotify] = propertynotify,
1988                                 [UnmapNotify] = unmapnotify,
1989                                 [VisibilityNotify] = visibilitynotify,
1990 };
1991
1992 int
1993 xerror_start(Display *d, XErrorEvent *ee)
1994 {
1995         other_wm = 1;
1996         return (-1);
1997 }
1998
1999 int
2000 xerror(Display *d, XErrorEvent *ee)
2001 {
2002         /* fprintf(stderr, "error: %p %p\n", display, ee); */
2003         return (-1);
2004 }
2005
2006 int
2007 active_wm(void)
2008 {
2009         other_wm = 0;
2010         xerrorxlib = XSetErrorHandler(xerror_start);
2011
2012         /* this causes an error if some other window manager is running */
2013         XSelectInput(display, DefaultRootWindow(display),
2014             SubstructureRedirectMask);
2015         XSync(display, False);
2016         if (other_wm)
2017                 return (1);
2018
2019         XSetErrorHandler(xerror);
2020         XSync(display, False);
2021         return (0);
2022 }
2023
2024 long
2025 getstate(Window w)
2026 {
2027         int                     format, status;
2028         long                    result = -1;
2029         unsigned char           *p = NULL;
2030         unsigned long           n, extra;
2031         Atom                    real;
2032
2033         astate = XInternAtom(display, "WM_STATE", False);
2034         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
2035             &real, &format, &n, &extra, (unsigned char **)&p);
2036         if (status != Success)
2037                 return (-1);
2038         if (n != 0)
2039                 result = *p;
2040         XFree(p);
2041         return (result);
2042 }
2043
2044 void
2045 new_region(struct swm_screen *s, struct workspace *ws,
2046     int x, int y, int w, int h)
2047 {
2048         struct swm_region       *r;
2049
2050         DNPRINTF(SWM_D_MISC, "new region on screen %d: %dx%d (%d, %d)\n",
2051              s->idx, x, y, w, h);
2052
2053         if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
2054                 errx(1, "calloc: failed to allocate memory for screen");
2055
2056         X(r) = x;
2057         Y(r) = y;
2058         WIDTH(r) = w;
2059         HEIGHT(r) = h;
2060         r->s = s;
2061         r->ws = ws;
2062         ws->r = r;
2063         TAILQ_INSERT_TAIL(&s->rl, r, entry);
2064         bar_setup(r);
2065 }
2066
2067 void
2068 setup_screens(void)
2069 {
2070 #ifdef SWM_XRR_HAS_CRTC
2071         XRRCrtcInfo             *ci;
2072         XRRScreenResources      *sr;
2073         int                     c;
2074 #endif /* SWM_XRR_HAS_CRTC */
2075         Window                  d1, d2, *wins = NULL;
2076         XWindowAttributes       wa;
2077         struct swm_region       *r;
2078         unsigned int            no;
2079         int                     errorbase, major, minor;
2080         int                     ncrtc = 0, w = 0;
2081         int                     i, j, k;
2082         struct workspace        *ws;
2083         int                     ws_idx_atom;
2084
2085
2086         if ((screens = calloc(ScreenCount(display),
2087              sizeof(struct swm_screen))) == NULL)
2088                 errx(1, "calloc: screens");
2089
2090         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2091
2092
2093         /* map physical screens */
2094         for (i = 0; i < ScreenCount(display); i++) {
2095                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2096                 screens[i].idx = i;
2097                 TAILQ_INIT(&screens[i].rl);
2098                 screens[i].root = RootWindow(display, i);
2099
2100                 /* set default colors */
2101                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2102                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2103                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2104                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2105                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2106
2107                 /* init all workspaces */
2108                 for (j = 0; j < SWM_WS_MAX; j++) {
2109                         ws = &screens[i].ws[j];
2110                         ws->idx = j;
2111                         ws->restack = 1;
2112                         ws->focus = NULL;
2113                         ws->r = NULL;
2114                         TAILQ_INIT(&ws->winlist);
2115
2116                         for (k = 0; layouts[k].l_stack != NULL; k++)
2117                                 if (layouts[k].l_config != NULL)
2118                                         layouts[k].l_config(ws,
2119                                             SWM_ARG_ID_STACKINIT);
2120                         ws->cur_layout = &layouts[0];
2121                 }
2122
2123                 /* map virtual screens onto physical screens */
2124                 screens[i].xrandr_support = XRRQueryExtension(display,
2125                     &xrandr_eventbase, &errorbase);
2126                 if (screens[i].xrandr_support)
2127                         if (XRRQueryVersion(display, &major, &minor) &&
2128                             major < 1)
2129                                 screens[i].xrandr_support = 0;
2130
2131 #if 0   /* not ready for dynamic screen changes */
2132                 if (screens[i].xrandr_support)
2133                         XRRSelectInput(display,
2134                             screens[r->s].root,
2135                             RRScreenChangeNotifyMask);
2136 #endif
2137
2138                 /* grab existing windows (before we build the bars)*/
2139                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2140                         continue;
2141
2142 #ifdef SWM_XRR_HAS_CRTC
2143                 sr = XRRGetScreenResources(display, screens[i].root);
2144                 if (sr == NULL)
2145                         new_region(&screens[i], &screens[i].ws[w],
2146                             0, 0, DisplayWidth(display, i),
2147                             DisplayHeight(display, i));
2148                 else
2149                         ncrtc = sr->ncrtc;
2150
2151                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2152                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2153                         if (ci->noutput == 0)
2154                                 continue;
2155
2156                         if (ci != NULL && ci->mode == None)
2157                                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2158                                     DisplayWidth(display, i),
2159                                     DisplayHeight(display, i));
2160                         else
2161                                 new_region(&screens[i], &screens[i].ws[w],
2162                                     ci->x, ci->y, ci->width, ci->height);
2163                         w++;
2164                 }
2165                 if (ci)
2166                         XRRFreeCrtcInfo(ci);
2167                 XRRFreeScreenResources(sr);
2168 #else
2169                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2170                     DisplayWidth(display, i),
2171                     DisplayHeight(display, i));
2172 #endif /* SWM_XRR_HAS_CRTC */
2173
2174                 /* attach windows to a region */
2175                 /* normal windows */
2176                 if ((r = TAILQ_FIRST(&screens[i].rl)) == NULL)
2177                         errx(1, "no regions on screen %d", i);
2178
2179                 for (i = 0; i < no; i++) {
2180                         XGetWindowAttributes(display, wins[i], &wa);
2181                         if (!XGetWindowAttributes(display, wins[i], &wa) ||
2182                             wa.override_redirect ||
2183                             XGetTransientForHint(display, wins[i], &d1))
2184                                 continue;
2185
2186                         if (wa.map_state == IsViewable ||
2187                             getstate(wins[i]) == NormalState)
2188                                 manage_window(wins[i]);
2189                 }
2190                 /* transient windows */
2191                 for (i = 0; i < no; i++) {
2192                         if (!XGetWindowAttributes(display, wins[i], &wa))
2193                                 continue;
2194
2195                         if (XGetTransientForHint(display, wins[i], &d1) &&
2196                             (wa.map_state == IsViewable || getstate(wins[i]) ==
2197                             NormalState))
2198                                 manage_window(wins[i]);
2199                 }
2200                 if (wins) {
2201                         XFree(wins);
2202                         wins = NULL;
2203                 }
2204         }
2205 }
2206
2207 int
2208 main(int argc, char *argv[])
2209 {
2210         struct passwd           *pwd;
2211         char                    conf[PATH_MAX], *cfile = NULL;
2212         struct stat             sb;
2213         XEvent                  e;
2214         int                     xfd;
2215         fd_set                  rd;
2216
2217         start_argv = argv;
2218         fprintf(stderr, "Welcome to scrotwm V%s\n", SWM_VERSION);
2219         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2220                 warnx("no locale support");
2221
2222         if (!(display = XOpenDisplay(0)))
2223                 errx(1, "can not open display");
2224
2225         if (active_wm())
2226                 errx(1, "other wm running");
2227
2228         astate = XInternAtom(display, "WM_STATE", False);
2229
2230         /* look for local and global conf file */
2231         pwd = getpwuid(getuid());
2232         if (pwd == NULL)
2233                 errx(1, "invalid user %d", getuid());
2234
2235         setup_screens();
2236
2237         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2238         if (stat(conf, &sb) != -1) {
2239                 if (S_ISREG(sb.st_mode))
2240                         cfile = conf;
2241         } else {
2242                 /* try global conf file */
2243                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2244                 if (!stat(conf, &sb))
2245                         if (S_ISREG(sb.st_mode))
2246                                 cfile = conf;
2247         }
2248         if (cfile)
2249                 conf_load(cfile);
2250         bar_refresh();
2251
2252         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2253
2254         grabkeys();
2255         stack();
2256
2257         xfd = ConnectionNumber(display);
2258         while (running) {
2259                 FD_ZERO(&rd);
2260                 FD_SET(xfd, &rd);
2261                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2262                         if (errno != EINTR)
2263                                 errx(1, "select failed");
2264                 if (bar_alarm) {
2265                         bar_alarm = 0;
2266                         bar_update();
2267                 }
2268                 while(XPending(display)) {
2269                         XNextEvent(display, &e);
2270                         if (handler[e.type])
2271                                 handler[e.type](&e);
2272                 }
2273         }
2274
2275         XCloseDisplay(display);
2276
2277         return (0);
2278 }