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[] = { "screenshot.sh", NULL, NULL };
 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_CYCLESC_UP   (14)
 306 #define SWM_ARG_ID_CYCLESC_DOWN (15)
 307 #define SWM_ARG_ID_SS_ALL       (0)
 308 #define SWM_ARG_ID_SS_WINDOW    (1)
 309         char                    **argv;
 310 };
 311
 312 unsigned long
 313 name_to_color(char *colorname)
 314 {
 315         Colormap                cmap;
 316         Status                  status;
 317         XColor                  screen_def, exact_def;
 318         unsigned long           result = 0;
 319         char                    cname[32] = "#";
 320
 321         cmap = DefaultColormap(display, screens[0].idx);
 322         status = XAllocNamedColor(display, cmap, colorname,
 323             &screen_def, &exact_def);
 324         if (!status) {
 325                 strlcat(cname, colorname + 2, sizeof cname - 1);
 326                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 327                     &exact_def);
 328         }
 329         if (status)
 330                 result = screen_def.pixel;
 331         else
 332                 fprintf(stderr, "color '%s' not found.\n", colorname);
 333
 334         return (result);
 335 }
 336
 337 void
 338 setscreencolor(char *val, int i, int c)
 339 {
 340         if (i > 0 && i <= ScreenCount(display)) {
 341                 screens[i - 1].c[c].color = name_to_color(val);
 342                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 343                         errx(1, "strdup");
 344         } else if (i == -1) {
 345                 for (i = 0; i < ScreenCount(display); i++)
 346                         screens[i].c[c].color = name_to_color(val);
 347                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 348                                 errx(1, "strdup");
 349         } else
 350                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 351                     i, ScreenCount(display));
 352 }
 353
 354 int
 355 varmatch(char *var, char *name, int *index)
 356 {
 357         char                    *p, buf[5];
 358         int                     i;
 359
 360         i = strncmp(var, name, 255);
 361         if (index == NULL)
 362                 return (i);
 363
 364         *index = -1;
 365         if (i <= 0)
 366                 return (i);
 367         p = var + strlen(name);
 368         if (*p++ != '[')
 369                 return (i);
 370         bzero(buf, sizeof buf);
 371         i = 0;
 372         while (isdigit(*p) && i < sizeof buf)
 373                 buf[i++] = *p++;
 374         if (i == 0 || i >= sizeof buf || *p != ']')
 375                 return (1);
 376         *index = strtonum(buf, 0, 99, NULL);
 377         return (0);
 378 }
 379
 380 /* conf file stuff */
 381 #define SWM_CONF_WS     "\n= \t"
 382 #define SWM_CONF_FILE   "scrotwm.conf"
 383 int
 384 conf_load(char *filename)
 385 {
 386         FILE                    *config;
 387         char                    *line, *cp, *var, *val;
 388         size_t                  len, lineno = 0;
 389         int                     i, sc;
 390
 391         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 392
 393         if (filename == NULL)
 394                 return (1);
 395
 396         if ((config = fopen(filename, "r")) == NULL)
 397                 return (1);
 398
 399         for (sc = ScreenCount(display);;) {
 400                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 401                         if (feof(config))
 402                                 break;
 403                 cp = line;
 404                 cp += (long)strspn(cp, SWM_CONF_WS);
 405                 if (cp[0] == '\0') {
 406                         /* empty line */
 407                         free(line);
 408                         continue;
 409                 }
 410                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 411                         break;
 412                 cp += (long)strspn(cp, SWM_CONF_WS);
 413                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 414                         break;
 415
 416                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 417                 switch (var[0]) {
 418                 case 'b':
 419                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 420                                 bar_enabled = atoi(val);
 421                         else if (!varmatch(var, "bar_border", &i))
 422                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 423                         else if (!varmatch(var, "bar_color", &i))
 424                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 425                         else if (!varmatch(var, "bar_font_color", &i))
 426                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 427                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 428                                 asprintf(&bar_fonts[0], "%s", val);
 429                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 430                                 asprintf(&bar_argv[0], "%s", val);
 431                         else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 432                                 bar_delay = atoi(val);
 433                         else
 434                                 goto bad;
 435                         break;
 436
 437                 case 'c':
 438                         if (!varmatch(var, "color_focus", &i))
 439                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 440                         else if (!varmatch(var, "color_unfocus", &i))
 441                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 442                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 443                                 cycle_visible = atoi(val);
 444                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 445                                 cycle_visible = atoi(val);
 446                         else
 447                                 goto bad;
 448                         break;
 449
 450                 case 'd':
 451                         if (!strncmp(var, "dialog_ratio",
 452                             strlen("dialog_ratio"))) {
 453                                 dialog_ratio = atof(val);
 454                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 455                                         dialog_ratio = .6;
 456                         } else
 457                                 goto bad;
 458                         break;
 459
 460                 case 's':
 461                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 462                                 asprintf(&spawn_term[0], "%s", val);
 463                         if (!strncmp(var, "screenshot_enabled",
 464                             strlen("screenshot_enabled")))
 465                                 ss_enabled = atoi(val);
 466                         if (!strncmp(var, "screenshot_app",
 467                             strlen("screenshot_app")))
 468                                 asprintf(&spawn_screenshot[0], "%s", val);
 469                         break;
 470                 default:
 471                         goto bad;
 472                 }
 473                 free(line);
 474         }
 475
 476         fclose(config);
 477         return (0);
 478
 479 bad:
 480         errx(1, "invalid conf file entry: %s=%s", var, val);
 481 }
 482
 483 void
 484 socket_setnonblock(int fd)
 485 {
 486         int                     flags;
 487
 488         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 489                 err(1, "fcntl F_GETFL");
 490         flags |= O_NONBLOCK;
 491         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 492                 err(1, "fcntl F_SETFL");
 493 }
 494
 495 void
 496 bar_print(struct swm_region *r, char *s)
 497 {
 498         XClearWindow(display, r->bar_window);
 499         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 500         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 501             strlen(s));
 502 }
 503
 504 void
 505 bar_extra_stop(void)
 506 {
 507         if (bar_pipe[0]) {
 508                 close(bar_pipe[0]);
 509                 bzero(bar_pipe, sizeof bar_pipe);
 510         }
 511         if (bar_pid) {
 512                 kill(bar_pid, SIGTERM);
 513                 bar_pid = 0;
 514         }
 515         strlcpy(bar_ext, "", sizeof bar_ext);
 516         bar_extra = 0;
 517 }
 518
 519 void
 520 bar_update(void)
 521 {
 522         time_t                  tmt;
 523         struct tm               tm;
 524         struct swm_region       *r;
 525         int                     i, x;
 526         size_t                  len;
 527         char                    s[SWM_BAR_MAX];
 528         char                    loc[SWM_BAR_MAX];
 529         char                    *b;
 530
 531         if (bar_enabled == 0)
 532                 return;
 533
 534         if (bar_extra && bar_extra_running) {
 535                 /* ignore short reads; it'll correct itself */
 536                 while ((b = fgetln(stdin, &len)) != NULL)
 537                         if (b && b[len - 1] == '\n') {
 538                                 b[len - 1] = '\0';
 539                                 strlcpy(bar_ext, b, sizeof bar_ext);
 540                         }
 541                 if (b == NULL && errno != EAGAIN) {
 542                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 543                             errno, strerror(errno));
 544                         bar_extra_stop();
 545                 }
 546         } else
 547                 strlcpy(bar_ext, "", sizeof bar_ext);
 548
 549         time(&tmt);
 550         localtime_r(&tmt, &tm);
 551         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 552         for (i = 0; i < ScreenCount(display); i++) {
 553                 x = 1;
 554                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 555                         snprintf(loc, sizeof loc, "%s     %d:%d    %s",
 556                             s, x++, r->ws->idx + 1, bar_ext);
 557                         bar_print(r, loc);
 558                 }
 559         }
 560         XSync(display, False);
 561         alarm(bar_delay);
 562 }
 563
 564 void
 565 bar_signal(int sig)
 566 {
 567         bar_alarm = 1;
 568 }
 569
 570 void
 571 bar_toggle(struct swm_region *r, union arg *args)
 572 {
 573         struct swm_region       *tmpr;
 574         int                     i, j, sc = ScreenCount(display);
 575
 576         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 577
 578         if (bar_enabled) {
 579                 for (i = 0; i < sc; i++)
 580                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 581                                 XUnmapWindow(display, tmpr->bar_window);
 582         } else {
 583                 for (i = 0; i < sc; i++)
 584                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 585                                 XMapRaised(display, tmpr->bar_window);
 586         }
 587         bar_enabled = !bar_enabled;
 588         XSync(display, False);
 589         for (i = 0; i < sc; i++)
 590                 for (j = 0; j < SWM_WS_MAX; j++)
 591                         screens[i].ws[j].restack = 1;
 592
 593         stack();
 594         /* must be after stack */
 595         for (i = 0; i < sc; i++)
 596                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 597                         bar_update();
 598 }
 599
 600 void
 601 bar_refresh(void)
 602 {
 603         XSetWindowAttributes    wa;
 604         struct swm_region       *r;
 605         int                     i;
 606
 607         /* do this here because the conf file is in memory */
 608         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 609                 /* launch external status app */
 610                 bar_extra_running = 1;
 611                 if (pipe(bar_pipe) == -1)
 612                         err(1, "pipe error");
 613                 socket_setnonblock(bar_pipe[0]);
 614                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 615                 if (dup2(bar_pipe[0], 0) == -1)
 616                         errx(1, "dup2");
 617                 if (dup2(bar_pipe[1], 1) == -1)
 618                         errx(1, "dup2");
 619                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 620                         err(1, "could not disable SIGPIPE");
 621                 switch (bar_pid = fork()) {
 622                 case -1:
 623                         err(1, "cannot fork");
 624                         break;
 625                 case 0: /* child */
 626                         close(bar_pipe[0]);
 627                         execvp(bar_argv[0], bar_argv);
 628                         err(1, "%s external app failed", bar_argv[0]);
 629                         break;
 630                 default: /* parent */
 631                         close(bar_pipe[1]);
 632                         break;
 633                 }
 634         }
 635
 636         bzero(&wa, sizeof wa);
 637         for (i = 0; i < ScreenCount(display); i++)
 638                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 639                         wa.border_pixel =
 640                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 641                         wa.background_pixel =
 642                             screens[i].c[SWM_S_COLOR_BAR].color;
 643                         XChangeWindowAttributes(display, r->bar_window,
 644                             CWBackPixel | CWBorderPixel, &wa);
 645                 }
 646         bar_update();
 647 }
 648
 649 void
 650 bar_setup(struct swm_region *r)
 651 {
 652         int                     i;
 653
 654         for (i = 0; bar_fonts[i] != NULL; i++) {
 655                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 656                 if (bar_fs) {
 657                         bar_fidx = i;
 658                         break;
 659                 }
 660         }
 661         if (bar_fonts[i] == NULL)
 662                         errx(1, "couldn't load font");
 663         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 664
 665         r->bar_window = XCreateSimpleWindow(display,
 666             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 667             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 668             r->s->c[SWM_S_COLOR_BAR].color);
 669         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 670         XSetFont(display, bar_gc, bar_fs->fid);
 671         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 672         if (bar_enabled)
 673                 XMapRaised(display, r->bar_window);
 674         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 675
 676         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 677                 err(1, "could not install bar_signal");
 678         bar_refresh();
 679 }
 680
 681 void
 682 config_win(struct ws_win *win)
 683 {
 684         XConfigureEvent         ce;
 685
 686         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 687             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 688         ce.type = ConfigureNotify;
 689         ce.display = display;
 690         ce.event = win->id;
 691         ce.window = win->id;
 692         ce.x = win->g.x;
 693         ce.y = win->g.y;
 694         ce.width = win->g.w;
 695         ce.height = win->g.h;
 696         ce.border_width = 1; /* XXX store this! */
 697         ce.above = None;
 698         ce.override_redirect = False;
 699         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 700 }
 701
 702 int
 703 count_win(struct workspace *ws, int count_transient)
 704 {
 705         struct ws_win           *win;
 706         int                     count = 0;
 707
 708         TAILQ_FOREACH(win, &ws->winlist, entry) {
 709                 if (count_transient == 0 && win->floating)
 710                         continue;
 711                 if (count_transient == 0 && win->transient)
 712                         continue;
 713                 count++;
 714         }
 715         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 716
 717         return (count);
 718 }
 719
 720 void
 721 quit(struct swm_region *r, union arg *args)
 722 {
 723         DNPRINTF(SWM_D_MISC, "quit\n");
 724         running = 0;
 725 }
 726
 727 void
 728 unmap_all(void)
 729 {
 730         struct ws_win           *win;
 731         int                     i, j;
 732
 733         for (i = 0; i < ScreenCount(display); i++)
 734                 for (j = 0; j < SWM_WS_MAX; j++)
 735                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 736                                 XUnmapWindow(display, win->id);
 737 }
 738
 739 void
 740 restart(struct swm_region *r, union arg *args)
 741 {
 742         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 743
 744         /* disable alarm because the following code may not be interrupted */
 745         alarm(0);
 746         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 747                 errx(1, "can't disable alarm");
 748
 749         bar_extra_stop();
 750         bar_extra = 1;
 751         unmap_all();
 752         XCloseDisplay(display);
 753         execvp(start_argv[0], start_argv);
 754         fprintf(stderr, "execvp failed\n");
 755         perror(" failed");
 756         quit(NULL, NULL);
 757 }
 758
 759 struct swm_region *
 760 root_to_region(Window root)
 761 {
 762         struct swm_region       *r;
 763         Window                  rr, cr;
 764         int                     i, x, y, wx, wy;
 765         unsigned int            mask;
 766
 767         for (i = 0; i < ScreenCount(display); i++)
 768                 if (screens[i].root == root)
 769                         break;
 770
 771         if (XQueryPointer(display, screens[i].root,
 772             &rr, &cr, &x, &y, &wx, &wy, &mask) == False) {
 773                 /* if we can't query the pointer, grab the first region */
 774                 r = TAILQ_FIRST(&screens[i].rl);
 775         } else {
 776                 /* otherwise, choose a region based on pointer location */
 777                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 778                         if (x >= X(r) && x <= X(r) + WIDTH(r) &&
 779                             y >= Y(r) && y <= Y(r) + HEIGHT(r))
 780                                 break;
 781                 }
 782
 783                 if (r == NULL)
 784                         r = TAILQ_FIRST(&screens[i].rl);
 785         }
 786         return (r);
 787 }
 788
 789 struct ws_win *
 790 find_window(Window id)
 791 {
 792         struct ws_win           *win;
 793         int                     i, j;
 794
 795         for (i = 0; i < ScreenCount(display); i++)
 796                 for (j = 0; j < SWM_WS_MAX; j++)
 797                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 798                                 if (id == win->id)
 799                                         return (win);
 800         return (NULL);
 801 }
 802
 803 void
 804 spawn(struct swm_region *r, union arg *args)
 805 {
 806         char                    *ret;
 807
 808         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 809         /*
 810          * The double-fork construct avoids zombie processes and keeps the code
 811          * clean from stupid signal handlers.
 812          */
 813         if (fork() == 0) {
 814                 if (fork() == 0) {
 815                         if (display)
 816                                 close(ConnectionNumber(display));
 817                         setenv("LD_PRELOAD", SWM_LIB, 1);
 818                         if (asprintf(&ret, "%d", r->ws->idx)) {
 819                                 setenv("_SWM_WS", ret, 1);
 820                                 free(ret);
 821                         }
 822                         if (asprintf(&ret, "%d", getpid())) {
 823                                 setenv("_SWM_PID", ret, 1);
 824                                 free(ret);
 825                         }
 826                         setsid();
 827                         execvp(args->argv[0], args->argv);
 828                         fprintf(stderr, "execvp failed\n");
 829                         perror(" failed");
 830                 }
 831                 exit(0);
 832         }
 833         wait(0);
 834 }
 835
 836 void
 837 spawnmenu(struct swm_region *r, union arg *args)
 838 {
 839         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
 840
 841         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
 842         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
 843         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
 844         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
 845         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
 846
 847         spawn(r, args);
 848 }
 849
 850 void
 851 unfocus_all(void)
 852 {
 853         struct ws_win           *win;
 854         int                     i, j;
 855
 856         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
 857
 858         for (i = 0; i < ScreenCount(display); i++)
 859                 for (j = 0; j < SWM_WS_MAX; j++)
 860                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
 861                                 if (win->ws->r == NULL)
 862                                         continue;
 863                                 grabbuttons(win, 0);
 864                                 XSetWindowBorder(display, win->id,
 865                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
 866                                 win->got_focus = 0;
 867                                 win->ws->focus = NULL;
 868                                 cur_focus = NULL;
 869                         }
 870 }
 871
 872 void
 873 focus_win(struct ws_win *win)
 874 {
 875         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
 876
 877         if (win == NULL)
 878                 return;
 879
 880         unfocus_all();
 881         win->ws->focus = win;
 882         if (win->ws->r != NULL) {
 883                 cur_focus = win;
 884                 if (!win->got_focus) {
 885                         XSetWindowBorder(display, win->id,
 886                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
 887                         grabbuttons(win, 1);
 888                 }
 889                 win->got_focus = 1;
 890                 XSetInputFocus(display, win->id,
 891                     RevertToPointerRoot, CurrentTime);
 892         }
 893 }
 894
 895 void
 896 switchws(struct swm_region *r, union arg *args)
 897 {
 898         int                     wsid = args->id;
 899         struct swm_region       *this_r, *other_r;
 900         struct ws_win           *win;
 901         struct workspace        *new_ws, *old_ws;
 902
 903         this_r = r;
 904         old_ws = this_r->ws;
 905         new_ws = &this_r->s->ws[wsid];
 906
 907         DNPRINTF(SWM_D_WS, "switchws screen %d region %dx%d+%d+%d: "
 908             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
 909             old_ws->idx, wsid);
 910
 911         if (new_ws == old_ws)
 912                 return;
 913
 914         other_r = new_ws->r;
 915         if (!other_r) {
 916                 /* if the other workspace is hidden, switch windows */
 917                 /* map new window first to prevent ugly blinking */
 918                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
 919                         XMapRaised(display, win->id);
 920
 921                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
 922                         XUnmapWindow(display, win->id);
 923                 old_ws->r = NULL;
 924                 old_ws->restack = 1;
 925         } else {
 926                 other_r->ws = old_ws;
 927                 old_ws->r = other_r;
 928         }
 929         this_r->ws = new_ws;
 930         new_ws->r = this_r;
 931
 932         ignore_enter = 1;
 933         /* set focus */
 934         if (new_ws->focus)
 935                 focus_win(new_ws->focus);
 936         stack();
 937         bar_update();
 938 }
 939
 940 void
 941 cyclews(struct swm_region *r, union arg *args)
 942 {
 943         union                   arg a;
 944         struct swm_screen       *s = r->s;
 945
 946         DNPRINTF(SWM_D_WS, "cyclews id %d "
 947             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 948             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 949
 950         a.id = r->ws->idx;
 951         do {
 952                 switch (args->id) {
 953                 case SWM_ARG_ID_CYCLEWS_UP:
 954                         if (a.id < SWM_WS_MAX - 1)
 955                                 a.id++;
 956                         else
 957                                 a.id = 0;
 958                         break;
 959                 case SWM_ARG_ID_CYCLEWS_DOWN:
 960                         if (a.id > 0)
 961                                 a.id--;
 962                         else
 963                                 a.id = SWM_WS_MAX - 1;
 964                         break;
 965                 default:
 966                         return;
 967                 };
 968
 969                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
 970                         continue;
 971                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
 972                         continue;
 973
 974                 switchws(r, &a);
 975         } while (a.id != r->ws->idx);
 976 }
 977
 978 void
 979 cyclescr(struct swm_region *r, union arg *args)
 980 {
 981         struct swm_region       *rr;
 982         int                     i;
 983
 984         i = r->s->idx;
 985         switch (args->id) {
 986         case SWM_ARG_ID_CYCLESC_UP:
 987                 rr = TAILQ_NEXT(r, entry);
 988                 if (rr == NULL)
 989                         rr = TAILQ_FIRST(&screens[i].rl);
 990                 break;
 991         case SWM_ARG_ID_CYCLESC_DOWN:
 992                 rr = TAILQ_PREV(r, swm_region_list, entry);
 993                 if (rr == NULL)
 994                         rr = TAILQ_LAST(&screens[i].rl, swm_region_list);
 995                 break;
 996         default:
 997                 return;
 998         };
 999         unfocus_all();
1000         XSetInputFocus(display, PointerRoot, RevertToPointerRoot, CurrentTime);
1001         XWarpPointer(display, None, rr->s[i].root, 0, 0, 0, 0, rr->g.x,
1002             rr->g.y + bar_enabled ? bar_height : 0);
1003 }
1004
1005 void
1006 swapwin(struct swm_region *r, union arg *args)
1007 {
1008         struct ws_win           *target;
1009         struct ws_win_list      *wl;
1010
1011
1012         DNPRINTF(SWM_D_WS, "swapwin id %d "
1013             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
1014             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1015         if (cur_focus == NULL)
1016                 return;
1017
1018         wl = &cur_focus->ws->winlist;
1019
1020         switch (args->id) {
1021         case SWM_ARG_ID_SWAPPREV:
1022                 target = TAILQ_PREV(cur_focus, ws_win_list, entry);
1023                 TAILQ_REMOVE(wl, cur_focus, entry);
1024                 if (target == NULL)
1025                         TAILQ_INSERT_TAIL(wl, cur_focus, entry);
1026                 else
1027                         TAILQ_INSERT_BEFORE(target, cur_focus, entry);
1028                 break;
1029         case SWM_ARG_ID_SWAPNEXT:
1030                 target = TAILQ_NEXT(cur_focus, entry);
1031                 TAILQ_REMOVE(wl, cur_focus, entry);
1032                 if (target == NULL)
1033                         TAILQ_INSERT_HEAD(wl, cur_focus, entry);
1034                 else
1035                         TAILQ_INSERT_AFTER(wl, target, cur_focus, entry);
1036                 break;
1037         case SWM_ARG_ID_SWAPMAIN:
1038                 target = TAILQ_FIRST(wl);
1039                 if (target == cur_focus)
1040                         return;
1041                 TAILQ_REMOVE(wl, target, entry);
1042                 TAILQ_INSERT_BEFORE(cur_focus, target, entry);
1043                 TAILQ_REMOVE(wl, cur_focus, entry);
1044                 TAILQ_INSERT_HEAD(wl, cur_focus, entry);
1045                 break;
1046         default:
1047                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
1048                 return;
1049         }
1050
1051         ignore_enter = 2;
1052         stack();
1053 }
1054
1055 void
1056 focus(struct swm_region *r, union arg *args)
1057 {
1058         struct ws_win           *winfocus, *winlostfocus;
1059         struct ws_win_list      *wl;
1060
1061         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
1062         if (cur_focus == NULL)
1063                 return;
1064
1065         wl = &cur_focus->ws->winlist;
1066
1067         winlostfocus = cur_focus;
1068
1069         switch (args->id) {
1070         case SWM_ARG_ID_FOCUSPREV:
1071                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1072                 if (winfocus == NULL)
1073                         winfocus = TAILQ_LAST(wl, ws_win_list);
1074                 break;
1075
1076         case SWM_ARG_ID_FOCUSNEXT:
1077                 winfocus = TAILQ_NEXT(cur_focus, entry);
1078                 if (winfocus == NULL)
1079                         winfocus = TAILQ_FIRST(wl);
1080                 break;
1081
1082         case SWM_ARG_ID_FOCUSMAIN:
1083                 winfocus = TAILQ_FIRST(wl);
1084                 break;
1085
1086         default:
1087                 return;
1088         }
1089
1090         if (winfocus == winlostfocus || winfocus == NULL)
1091                 return;
1092
1093         XMapRaised(display, winfocus->id);
1094         focus_win(winfocus);
1095         XSync(display, False);
1096 }
1097
1098 void
1099 cycle_layout(struct swm_region *r, union arg *args)
1100 {
1101         struct workspace        *ws = r->ws;
1102
1103         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1104
1105         ws->cur_layout++;
1106         if (ws->cur_layout->l_stack == NULL)
1107                 ws->cur_layout = &layouts[0];
1108         ignore_enter = 1;
1109
1110         stack();
1111 }
1112
1113 void
1114 stack_config(struct swm_region *r, union arg *args)
1115 {
1116         struct workspace        *ws = r->ws;
1117
1118         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1119             args->id, ws->idx);
1120
1121         if (ws->cur_layout->l_config != NULL)
1122                 ws->cur_layout->l_config(ws, args->id);
1123
1124         if (args->id != SWM_ARG_ID_STACKINIT);
1125                 stack();
1126 }
1127
1128 void
1129 stack(void) {
1130         struct swm_geometry     g;
1131         struct swm_region       *r;
1132         int                     i, j;
1133
1134         DNPRINTF(SWM_D_STACK, "stack\n");
1135
1136         for (i = 0; i < ScreenCount(display); i++) {
1137                 j = 0;
1138                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1139                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1140                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1141
1142                         /* start with screen geometry, adjust for bar */
1143                         g = r->g;
1144                         g.w -= 2;
1145                         g.h -= 2;
1146                         if (bar_enabled) {
1147                                 g.y += bar_height;
1148                                 g.h -= bar_height;
1149                         }
1150
1151                         r->ws->restack = 0;
1152                         r->ws->cur_layout->l_stack(r->ws, &g);
1153                 }
1154         }
1155         XSync(display, False);
1156 }
1157
1158 void
1159 stack_floater(struct ws_win *win, struct swm_region *r)
1160 {
1161         unsigned int            mask;
1162         XWindowChanges          wc;
1163
1164         bzero(&wc, sizeof wc);
1165         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1166         wc.border_width = 1;
1167         if (win->transient) {
1168                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1169                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1170         }
1171         wc.width = win->g.w;
1172         wc.height = win->g.h;
1173         wc.x = (WIDTH(r) - win->g.w) / 2;
1174         wc.y = (HEIGHT(r) - win->g.h) / 2;
1175
1176         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1177             win->id, wc.x, wc.y, wc.width, wc.height);
1178
1179         XConfigureWindow(display, win->id, mask, &wc);
1180 }
1181
1182 #define SWAPXY(g)       do {                            \
1183         int tmp;                                        \
1184         tmp = (g)->y; (g)->y = (g)->x; (g)->x = tmp;    \
1185         tmp = (g)->h; (g)->h = (g)->w; (g)->w = tmp;    \
1186 } while (0)
1187 void
1188 stack_master(struct workspace *ws, struct swm_geometry *g, int rot, int flip)
1189 {
1190         XWindowChanges          wc;
1191         struct swm_geometry     win_g, r_g = *g;
1192         struct ws_win           *win, *winfocus;
1193         int                     i, j, w_inc, h_inc, w_base, h_base;
1194         int                     hrh, extra, h_slice, last_h = 0;
1195         int                     split, colno, winno, mwin, msize, mscale;
1196         int                     remain, missing, v_slice;;
1197         unsigned int            mask;
1198
1199         DNPRINTF(SWM_D_STACK, "stack_master: workspace: %d\n rot=%s flip=%s",
1200             ws->idx, rot ? "yes" : "no", flip ? "yes" : "no");
1201
1202         if ((winno = count_win(ws, 0)) == 0)
1203                 return;
1204
1205         if (ws->focus == NULL)
1206                 ws->focus = TAILQ_FIRST(&ws->winlist);
1207         winfocus = cur_focus ? cur_focus : ws->focus;
1208
1209         win = TAILQ_FIRST(&ws->winlist);
1210         if (rot) {
1211                 w_inc = win->sh.width_inc;
1212                 w_base = win->sh.base_width;
1213                 mwin = ws->l_state.horizontal_mwin;
1214                 mscale = ws->l_state.horizontal_msize;
1215                 SWAPXY(&r_g);
1216         } else {
1217                 w_inc = win->sh.height_inc;
1218                 w_base = win->sh.base_height;
1219                 mwin = ws->l_state.vertical_mwin;
1220                 mscale = ws->l_state.vertical_msize;
1221         }
1222         win_g = r_g;
1223
1224         h_slice = r_g.h / SWM_H_SLICE;
1225         if (mwin && winno > mwin) {
1226                 v_slice = r_g.w / SWM_V_SLICE;
1227
1228                 split = mwin;
1229                 colno = split;
1230                 msize = v_slice * mscale;
1231
1232                 if (w_inc > 1 && w_inc < v_slice) {
1233                         /* adjust for window's requested size increment */
1234                         remain = (win_g.w - w_base) % w_inc;
1235                         missing = w_inc - remain;
1236
1237                         if (missing <= extra || j == 0) {
1238                                 extra -= missing;
1239                                 win_g.w += missing;
1240                         } else {
1241                                 win_g.w -= remain;
1242                                 extra += remain;
1243                         }
1244                 }
1245
1246                 win_g.w = msize;
1247                 if (flip)
1248                         win_g.x += r_g.w - msize;
1249         } else {
1250                 colno = winno;
1251                 split = 0;
1252         }
1253         hrh = r_g.h / colno;
1254         extra = r_g.h - (colno * hrh);
1255         win_g.h = hrh - 2;
1256
1257         i = j = 0;
1258         TAILQ_FOREACH(win, &ws->winlist, entry) {
1259                 if (split && i == split) {
1260                         colno = winno - split;
1261                         hrh = (r_g.h / colno);
1262                         extra = r_g.h - (colno * hrh);
1263                         if (flip)
1264                                 win_g.x = r_g.x;
1265                         else
1266                                 win_g.x += msize + 2;
1267                         win_g.w = r_g.w - (msize + 2);
1268                         j = 0;
1269                 }
1270                 win_g.h = hrh - 2;
1271                 if (rot) {
1272                         h_inc = win->sh.width_inc;
1273                         h_base = win->sh.base_width;
1274                 } else {
1275                         h_inc = win->sh.height_inc;
1276                         h_base = win->sh.base_height;
1277                 }
1278                 if (j == colno - 1) {
1279                         win_g.h = hrh + extra;
1280                 } else if (h_inc > 1 && h_inc < h_slice) {
1281                         /* adjust for window's requested size increment */
1282                         remain = (win_g.h - h_base) % h_inc;
1283                         missing = h_inc - remain;
1284
1285                         if (missing <= extra || j == 0) {
1286                                 extra -= missing;
1287                                 win_g.h += missing;
1288                         } else {
1289                                 win_g.h -= remain;
1290                                 extra += remain;
1291                         }
1292                 }
1293
1294                 if (j == 0)
1295                         win_g.y = r_g.y;
1296                 else
1297                         win_g.y += last_h + 2;
1298
1299                 if (win->transient != 0 || win->floating != 0)
1300                         stack_floater(win, ws->r);
1301                 else {
1302                         bzero(&wc, sizeof wc);
1303                         wc.border_width = 1;
1304                         if (rot) {
1305                                 win->g.x = wc.x = win_g.y;
1306                                 win->g.y = wc.y = win_g.x;
1307                                 win->g.w = wc.width = win_g.h;
1308                                 win->g.h = wc.height = win_g.w;
1309                         } else {
1310                                 win->g.x = wc.x = win_g.x;
1311                                 win->g.y = wc.y = win_g.y;
1312                                 win->g.w = wc.width = win_g.w;
1313                                 win->g.h = wc.height = win_g.h;
1314                         }
1315                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1316                         XConfigureWindow(display, win->id, mask, &wc);
1317                         /*
1318                         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);
1319                         */
1320                 }
1321
1322                 XMapRaised(display, win->id);
1323                 last_h = win_g.h;
1324                 i++;
1325                 j++;
1326         }
1327
1328         if (winfocus)
1329                 focus_win(winfocus); /* has to be done outside of the loop */
1330 }
1331
1332 void
1333 vertical_config(struct workspace *ws, int id)
1334 {
1335         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1336
1337         switch (id) {
1338         case SWM_ARG_ID_STACKRESET:
1339         case SWM_ARG_ID_STACKINIT:
1340                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1341                 ws->l_state.vertical_mwin = 1;
1342                 break;
1343         case SWM_ARG_ID_MASTERSHRINK:
1344                 if (ws->l_state.vertical_msize > 1)
1345                         ws->l_state.vertical_msize--;
1346                 break;
1347         case SWM_ARG_ID_MASTERGROW:
1348                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1349                         ws->l_state.vertical_msize++;
1350                 break;
1351         case SWM_ARG_ID_MASTERADD:
1352                 ws->l_state.vertical_mwin++;
1353                 break;
1354         case SWM_ARG_ID_MASTERDEL:
1355                 if (ws->l_state.vertical_mwin > 0)
1356                         ws->l_state.vertical_mwin--;
1357                 break;
1358         default:
1359                 return;
1360         }
1361 }
1362
1363 void
1364 vertical_stack(struct workspace *ws, struct swm_geometry *g)
1365 {
1366         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1367
1368         stack_master(ws, g, 0, 0);
1369 }
1370
1371 void
1372 horizontal_config(struct workspace *ws, int id)
1373 {
1374         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1375
1376         switch (id) {
1377         case SWM_ARG_ID_STACKRESET:
1378         case SWM_ARG_ID_STACKINIT:
1379                 ws->l_state.horizontal_mwin = 1;
1380                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1381                 break;
1382         case SWM_ARG_ID_MASTERSHRINK:
1383                 if (ws->l_state.horizontal_msize > 1)
1384                         ws->l_state.horizontal_msize--;
1385                 break;
1386         case SWM_ARG_ID_MASTERGROW:
1387                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1388                         ws->l_state.horizontal_msize++;
1389                 break;
1390         case SWM_ARG_ID_MASTERADD:
1391                 ws->l_state.horizontal_mwin++;
1392                 break;
1393         case SWM_ARG_ID_MASTERDEL:
1394                 if (ws->l_state.horizontal_mwin > 0)
1395                         ws->l_state.horizontal_mwin--;
1396                 break;
1397         default:
1398                 return;
1399         }
1400 }
1401
1402 void
1403 horizontal_stack(struct workspace *ws, struct swm_geometry *g)
1404 {
1405         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1406
1407         stack_master(ws, g, 1, 0);
1408 }
1409
1410 /* fullscreen view */
1411 void
1412 max_stack(struct workspace *ws, struct swm_geometry *g) {
1413         XWindowChanges          wc;
1414         struct swm_geometry     gg = *g;
1415         struct ws_win           *win, *winfocus;
1416         unsigned int            mask;
1417
1418         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1419
1420         if (count_win(ws, 0) == 0)
1421                 return;
1422
1423         if (ws->focus == NULL)
1424                 ws->focus = TAILQ_FIRST(&ws->winlist);
1425         winfocus = cur_focus ? cur_focus : ws->focus;
1426
1427         TAILQ_FOREACH(win, &ws->winlist, entry) {
1428                 if (win->transient != 0 || win->floating != 0) {
1429                         if (win == ws->focus) {
1430                                 /* XXX maximize? */
1431                                 stack_floater(win, ws->r);
1432                                 XMapRaised(display, win->id);
1433                         } else
1434                                 XUnmapWindow(display, win->id);
1435                 } else {
1436                         bzero(&wc, sizeof wc);
1437                         wc.border_width = 1;
1438                         win->g.x = wc.x = gg.x;
1439                         win->g.y = wc.y = gg.y;
1440                         win->g.w = wc.width = gg.w;
1441                         win->g.h = wc.height = gg.h;
1442                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1443                         XConfigureWindow(display, win->id, mask, &wc);
1444
1445                         if (win == ws->focus) {
1446                                 XMapRaised(display, win->id);
1447                         } else
1448                                 XUnmapWindow(display, win->id);
1449                 }
1450         }
1451
1452         if (winfocus)
1453                 focus_win(winfocus); /* has to be done outside of the loop */
1454 }
1455
1456 void
1457 send_to_ws(struct swm_region *r, union arg *args)
1458 {
1459         int                     wsid = args->id;
1460         struct ws_win           *win = cur_focus;
1461         struct workspace        *ws, *nws;
1462         Atom                    ws_idx_atom = 0;
1463         unsigned char           ws_idx_str[SWM_PROPLEN];
1464
1465         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1466
1467         ws = win->ws;
1468         nws = &win->s->ws[wsid];
1469
1470         XUnmapWindow(display, win->id);
1471
1472         /* find a window to focus */
1473         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1474         if (ws->focus == NULL)
1475                 ws->focus = TAILQ_FIRST(&ws->winlist);
1476         if (ws->focus == win)
1477                 ws->focus = NULL;
1478
1479         TAILQ_REMOVE(&ws->winlist, win, entry);
1480
1481         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1482         win->ws = nws;
1483
1484         /* Try to update the window's workspace property */
1485         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1486         if (ws_idx_atom &&
1487             snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
1488                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1489                     ws_idx_str);
1490                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1491                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1492         }
1493
1494         if (count_win(nws, 1) == 1)
1495                 nws->focus = win;
1496         ws->restack = 1;
1497         nws->restack = 1;
1498
1499         stack();
1500 }
1501
1502 void
1503 wkill(struct swm_region *r, union arg *args)
1504 {
1505         DNPRINTF(SWM_D_MISC, "wkill\n");
1506         if(r->ws->focus != NULL)
1507                 XKillClient(display, r->ws->focus->id);
1508 }
1509
1510 void
1511 screenshot(struct swm_region *r, union arg *args)
1512 {
1513         union arg                       a;
1514
1515         DNPRINTF(SWM_D_MISC, "screenshot\n");
1516
1517         if (ss_enabled == 0)
1518                 return;
1519
1520         switch (args->id) {
1521         case SWM_ARG_ID_SS_ALL:
1522                 spawn_screenshot[1] = "full";
1523                 break;
1524         case SWM_ARG_ID_SS_WINDOW:
1525                 spawn_screenshot[1] = "window";
1526                 break;
1527         default:
1528                 return;
1529         }
1530         a.argv = spawn_screenshot;
1531         spawn(r, &a);
1532 }
1533
1534 /* key definitions */
1535 struct key {
1536         unsigned int            mod;
1537         KeySym                  keysym;
1538         void                    (*func)(struct swm_region *r, union arg *);
1539         union arg               args;
1540 } keys[] = {
1541         /* modifier             key     function                argument */
1542         { MODKEY,               XK_space,       cycle_layout,   {0} },
1543         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1544         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1545         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1546         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1547         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1548         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1549         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1550         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1551         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1552         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1553         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1554         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1555         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1556         { MODKEY,               XK_q,           restart,        {0} },
1557         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1558         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1559         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1560         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1561         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1562         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1563         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1564         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1565         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1566         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1567         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1568         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1569         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1570         { MODKEY | ShiftMask,   XK_Right,       cyclescr,       {.id = SWM_ARG_ID_CYCLESC_UP} },
1571         { MODKEY | ShiftMask,   XK_Left,        cyclescr,       {.id = SWM_ARG_ID_CYCLESC_DOWN} },
1572         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1573         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1574         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1575         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1576         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1577         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1578         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1579         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1580         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1581         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1582         { MODKEY,               XK_b,           bar_toggle,     {0} },
1583         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1584         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1585         { MODKEY | ShiftMask,   XK_x,           wkill,          {0} },
1586         { MODKEY,               XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_ALL} },
1587         { MODKEY | ShiftMask,   XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_WINDOW} },
1588 };
1589
1590 void
1591 click(struct swm_region *r, union arg *args)
1592 {
1593         DNPRINTF(SWM_D_MOUSE, "click: button: %d\n", args->id);
1594
1595         switch (args->id) {
1596         case Button1:
1597                 break;
1598         case Button2:
1599                 break;
1600         case Button3:
1601                 break;
1602         default:
1603                 return;
1604         }
1605 }
1606
1607 /* mouse */
1608 enum { client_click, root_click };
1609 struct button {
1610         unsigned int            action;
1611         unsigned int            mask;
1612         unsigned int            button;
1613         void                    (*func)(struct swm_region *r, union arg *);
1614         union arg               args;
1615 } buttons[] = {
1616           /* action             key             mouse button    func            args */
1617         { client_click,         MODKEY,         Button1,        click, {.id=Button1} },
1618 };
1619
1620 void
1621 updatenumlockmask(void)
1622 {
1623         unsigned int            i, j;
1624         XModifierKeymap         *modmap;
1625
1626         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1627         numlockmask = 0;
1628         modmap = XGetModifierMapping(display);
1629         for (i = 0; i < 8; i++)
1630                 for (j = 0; j < modmap->max_keypermod; j++)
1631                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1632                           == XKeysymToKeycode(display, XK_Num_Lock))
1633                                 numlockmask = (1 << i);
1634
1635         XFreeModifiermap(modmap);
1636 }
1637
1638 void
1639 grabkeys(void)
1640 {
1641         unsigned int            i, j, k;
1642         KeyCode                 code;
1643         unsigned int            modifiers[] =
1644             { 0, LockMask, numlockmask, numlockmask | LockMask };
1645
1646         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1647         updatenumlockmask();
1648
1649         for (k = 0; k < ScreenCount(display); k++) {
1650                 if (TAILQ_EMPTY(&screens[k].rl))
1651                         continue;
1652                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1653                 for (i = 0; i < LENGTH(keys); i++) {
1654                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1655                                 for (j = 0; j < LENGTH(modifiers); j++)
1656                                         XGrabKey(display, code,
1657                                             keys[i].mod | modifiers[j],
1658                                             screens[k].root, True,
1659                                             GrabModeAsync, GrabModeAsync);
1660                 }
1661         }
1662 }
1663
1664 void
1665 grabbuttons(struct ws_win *win, int focused)
1666 {
1667         unsigned int            i, j;
1668         unsigned int            modifiers[] =
1669             { 0, LockMask, numlockmask, numlockmask|LockMask };
1670
1671         updatenumlockmask();
1672         XUngrabButton(display, AnyButton, AnyModifier, win->id);
1673         if(focused) {
1674                 for (i = 0; i < LENGTH(buttons); i++)
1675                         if (buttons[i].action == client_click)
1676                                 for (j = 0; j < LENGTH(modifiers); j++)
1677                                         XGrabButton(display, buttons[i].button,
1678                                             buttons[i].mask | modifiers[j],
1679                                             win->id, False, BUTTONMASK,
1680                                             GrabModeAsync, GrabModeSync, None,
1681                                             None);
1682         } else
1683                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
1684                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
1685 }
1686
1687 void
1688 expose(XEvent *e)
1689 {
1690         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1691 }
1692
1693 void
1694 keypress(XEvent *e)
1695 {
1696         unsigned int            i;
1697         KeySym                  keysym;
1698         XKeyEvent               *ev = &e->xkey;
1699
1700         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1701
1702         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1703         for (i = 0; i < LENGTH(keys); i++)
1704                 if (keysym == keys[i].keysym
1705                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1706                    && keys[i].func)
1707                         keys[i].func(root_to_region(ev->root),
1708                             &(keys[i].args));
1709 }
1710
1711 void
1712 buttonpress(XEvent *e)
1713 {
1714         XButtonPressedEvent     *ev = &e->xbutton;
1715
1716         struct ws_win           *win;
1717         int                     i, action;
1718
1719         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
1720
1721         action = root_click;
1722         if ((win = find_window(ev->window)) == NULL)
1723                 return;
1724         else {
1725                 focus_win(win);
1726                 action = client_click;
1727         }
1728
1729         for (i = 0; i < LENGTH(buttons); i++)
1730                 if (action == buttons[i].action && buttons[i].func &&
1731                     buttons[i].button == ev->button &&
1732                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
1733                         buttons[i].func(root_to_region(ev->root),
1734                         &buttons[i].args);
1735 }
1736
1737 void
1738 set_win_state(struct ws_win *win, long state)
1739 {
1740         long                    data[] = {state, None};
1741
1742         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
1743
1744         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
1745             (unsigned char *)data, 2);
1746 }
1747
1748 struct ws_win *
1749 manage_window(Window id)
1750 {
1751         Window                  trans;
1752         struct workspace        *ws;
1753         struct ws_win           *win;
1754         XClassHint              ch;
1755         int                     format;
1756         unsigned long           nitems, bytes;
1757         Atom                    ws_idx_atom = 0, type;
1758         unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
1759         struct swm_region       *r;
1760         long                    mask;
1761
1762         if ((win = find_window(id)) != NULL)
1763                         return (win);   /* already being managed */
1764
1765         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1766                 errx(1, "calloc: failed to allocate memory for new window");
1767
1768         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1769         if (ws_idx_atom)
1770                 XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
1771                     False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
1772
1773         XGetWindowAttributes(display, id, &win->wa);
1774         r = root_to_region(win->wa.root);
1775         /* If the window was managed before, put it in the same workspace */
1776         if (prop) {
1777                 int             ws_idx;
1778                 const char      *errstr;
1779
1780                 DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
1781                 ws_idx = strtonum(prop, 0, 9, &errstr);
1782                 if (errstr)
1783                         DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
1784                             errstr, prop);
1785                 ws = &r->s->ws[ws_idx];
1786         } else
1787                 ws = r->ws;
1788
1789         win->id = id;
1790         win->ws = ws;
1791         win->s = r->s;  /* this never changes */
1792         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
1793
1794         /* make new win focused */
1795         focus_win(win);
1796
1797         XGetTransientForHint(display, win->id, &trans);
1798         if (trans) {
1799                 win->transient = trans;
1800                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
1801                     (unsigned)win->id, win->transient);
1802         }
1803         win->g.w = win->wa.width;
1804         win->g.h = win->wa.height;
1805         win->g.x = win->wa.x;
1806         win->g.y = win->wa.y;
1807
1808         XGetWMNormalHints(display, win->id, &win->sh, &mask);
1809
1810         if (ws_idx_atom && prop == NULL &&
1811             snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
1812                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1813                     ws_idx_str);
1814                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1815                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1816         }
1817         XFree(prop);
1818
1819         /*
1820         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);
1821         */
1822
1823         /* XXX make this a table */
1824         bzero(&ch, sizeof ch);
1825         if (XGetClassHint(display, win->id, &ch)) {
1826                 /*fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name); */
1827                 if (!strcmp(ch.res_class, "MPlayer") && !strcmp(ch.res_name, "xv")) {
1828                         win->floating = 1;
1829                 }
1830                 if (ch.res_class)
1831                         XFree(ch.res_class);
1832                 if (ch.res_name)
1833                         XFree(ch.res_name);
1834         }
1835
1836         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
1837             PropertyChangeMask | StructureNotifyMask);
1838
1839         set_win_state(win, NormalState);
1840
1841         return (win);
1842 }
1843
1844 void
1845 configurerequest(XEvent *e)
1846 {
1847         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1848         struct ws_win           *win;
1849         int                     new = 0;
1850         XWindowChanges          wc;
1851
1852         if ((win = find_window(ev->window)) == NULL)
1853                 new = 1;
1854
1855         if (new) {
1856                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
1857                     ev->window);
1858                 /*
1859                 fprintf(stderr, "configurerequest: new window: %lu x %d y %d w %d h %d bw %d s %d sm %d\n",
1860                     ev->window, ev->x, ev->y, ev->width, ev->height, ev->border_width, ev->above, ev->detail);
1861                 */
1862                 bzero(&wc, sizeof wc);
1863                 wc.x = ev->x;
1864                 wc.y = ev->y;
1865                 wc.width = ev->width;
1866                 wc.height = ev->height;
1867                 wc.border_width = ev->border_width;
1868                 wc.sibling = ev->above;
1869                 wc.stack_mode = ev->detail;
1870                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
1871         } else {
1872                 /*
1873                 fprintf(stderr, "configurerequest: change window: %lu\n",
1874                     ev->window);
1875                 */
1876                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
1877                     ev->window);
1878                 if (win->floating) {
1879                         if (ev->value_mask & CWX)
1880                                 win->g.x = ev->x;
1881                         if (ev->value_mask & CWY)
1882                                 win->g.y = ev->y;
1883                         if (ev->value_mask & CWWidth)
1884                                 win->g.w = ev->width;
1885                         if (ev->value_mask & CWHeight)
1886                                 win->g.h = ev->height;
1887                         if (win->ws->r != NULL) {
1888                                 /* this seems to be full screen */
1889                                 if (win->g.w > WIDTH(win->ws->r)) {
1890                                         /* kill border */
1891                                         win->g.x -= 1;
1892                                         win->g.w += 1;
1893                                 }
1894                                 if (win->g.h > HEIGHT(win->ws->r)) {
1895                                         /* kill border */
1896                                         win->g.y -= 1;
1897                                         win->g.h += 1;
1898                                 }
1899                         }
1900                         if ((ev->value_mask & (CWX|CWY)) &&
1901                             !(ev->value_mask & (CWWidth|CWHeight)))
1902                                 config_win(win);
1903                         XMoveResizeWindow(display, win->id,
1904                             win->g.x, win->g.y, win->g.w, win->g.h);
1905                 } else
1906                         config_win(win);
1907         }
1908 }
1909
1910 void
1911 configurenotify(XEvent *e)
1912 {
1913         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1914             e->xconfigure.window);
1915 }
1916
1917 void
1918 destroynotify(XEvent *e)
1919 {
1920         struct ws_win           *win;
1921         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1922         struct workspace        *ws;
1923
1924         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1925
1926         if ((win = find_window(ev->window)) != NULL) {
1927                 ws = win->ws;
1928                 /* find a window to focus */
1929                 if (ws->focus == win)
1930                         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1931                 if (ws->focus == NULL)
1932                         ws->focus = TAILQ_FIRST(&ws->winlist);
1933                 if (ws->focus == win)
1934                         ws->focus = NULL;
1935                 if (cur_focus == win)
1936                         focus_win(ws->focus);
1937
1938                 TAILQ_REMOVE(&ws->winlist, win, entry);
1939                 set_win_state(win, WithdrawnState);
1940                 free(win);
1941         }
1942         stack();
1943 }
1944
1945 void
1946 enternotify(XEvent *e)
1947 {
1948         XCrossingEvent          *ev = &e->xcrossing;
1949         struct ws_win           *win;
1950
1951         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1952
1953         if (ignore_enter) {
1954                 /* eat event(r) to prevent autofocus */
1955                 ignore_enter--;
1956                 return;
1957         }
1958
1959         if ((win = find_window(ev->window)) != NULL)
1960                 focus_win(win);
1961 }
1962
1963 void
1964 focusin(XEvent *e)
1965 {
1966         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
1967 }
1968
1969 void
1970 mappingnotify(XEvent *e)
1971 {
1972         XMappingEvent           *ev = &e->xmapping;
1973
1974         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1975
1976         XRefreshKeyboardMapping(ev);
1977         if (ev->request == MappingKeyboard)
1978                 grabkeys();
1979 }
1980
1981 void
1982 maprequest(XEvent *e)
1983 {
1984         XMapRequestEvent        *ev = &e->xmaprequest;
1985         XWindowAttributes       wa;
1986
1987         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1988             e->xmaprequest.window);
1989
1990         if (!XGetWindowAttributes(display, ev->window, &wa))
1991                 return;
1992         if (wa.override_redirect)
1993                 return;
1994         manage_window(e->xmaprequest.window);
1995         stack();
1996 }
1997
1998 void
1999 propertynotify(XEvent *e)
2000 {
2001         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
2002             e->xproperty.window);
2003 }
2004
2005 void
2006 unmapnotify(XEvent *e)
2007 {
2008         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
2009 }
2010
2011 void
2012 visibilitynotify(XEvent *e)
2013 {
2014         int                     i;
2015         struct swm_region       *r;
2016
2017         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
2018             e->xvisibility.window);
2019         if (e->xvisibility.state == VisibilityUnobscured)
2020                 for (i = 0; i < ScreenCount(display); i++)
2021                         TAILQ_FOREACH(r, &screens[i].rl, entry)
2022                                 if (e->xvisibility.window == r->bar_window)
2023                                         bar_update();
2024 }
2025
2026 void                    (*handler[LASTEvent])(XEvent *) = {
2027                                 [Expose] = expose,
2028                                 [KeyPress] = keypress,
2029                                 [ButtonPress] = buttonpress,
2030                                 [ConfigureRequest] = configurerequest,
2031                                 [ConfigureNotify] = configurenotify,
2032                                 [DestroyNotify] = destroynotify,
2033                                 [EnterNotify] = enternotify,
2034                                 [FocusIn] = focusin,
2035                                 [MappingNotify] = mappingnotify,
2036                                 [MapRequest] = maprequest,
2037                                 [PropertyNotify] = propertynotify,
2038                                 [UnmapNotify] = unmapnotify,
2039                                 [VisibilityNotify] = visibilitynotify,
2040 };
2041
2042 int
2043 xerror_start(Display *d, XErrorEvent *ee)
2044 {
2045         other_wm = 1;
2046         return (-1);
2047 }
2048
2049 int
2050 xerror(Display *d, XErrorEvent *ee)
2051 {
2052         /* fprintf(stderr, "error: %p %p\n", display, ee); */
2053         return (-1);
2054 }
2055
2056 int
2057 active_wm(void)
2058 {
2059         other_wm = 0;
2060         xerrorxlib = XSetErrorHandler(xerror_start);
2061
2062         /* this causes an error if some other window manager is running */
2063         XSelectInput(display, DefaultRootWindow(display),
2064             SubstructureRedirectMask);
2065         XSync(display, False);
2066         if (other_wm)
2067                 return (1);
2068
2069         XSetErrorHandler(xerror);
2070         XSync(display, False);
2071         return (0);
2072 }
2073
2074 long
2075 getstate(Window w)
2076 {
2077         int                     format, status;
2078         long                    result = -1;
2079         unsigned char           *p = NULL;
2080         unsigned long           n, extra;
2081         Atom                    real;
2082
2083         astate = XInternAtom(display, "WM_STATE", False);
2084         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
2085             &real, &format, &n, &extra, (unsigned char **)&p);
2086         if (status != Success)
2087                 return (-1);
2088         if (n != 0)
2089                 result = *p;
2090         XFree(p);
2091         return (result);
2092 }
2093
2094 void
2095 new_region(struct swm_screen *s, struct workspace *ws,
2096     int x, int y, int w, int h)
2097 {
2098         struct swm_region       *r;
2099
2100         DNPRINTF(SWM_D_MISC, "new region on screen %d: %dx%d (%d, %d)\n",
2101              s->idx, x, y, w, h);
2102
2103         if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
2104                 errx(1, "calloc: failed to allocate memory for screen");
2105
2106         X(r) = x;
2107         Y(r) = y;
2108         WIDTH(r) = w;
2109         HEIGHT(r) = h;
2110         r->s = s;
2111         r->ws = ws;
2112         ws->r = r;
2113         TAILQ_INSERT_TAIL(&s->rl, r, entry);
2114         bar_setup(r);
2115 }
2116
2117 void
2118 setup_screens(void)
2119 {
2120 #ifdef SWM_XRR_HAS_CRTC
2121         XRRCrtcInfo             *ci;
2122         XRRScreenResources      *sr;
2123         int                     c;
2124 #endif /* SWM_XRR_HAS_CRTC */
2125         Window                  d1, d2, *wins = NULL;
2126         XWindowAttributes       wa;
2127         struct swm_region       *r;
2128         unsigned int            no;
2129         int                     errorbase, major, minor;
2130         int                     ncrtc = 0, w = 0;
2131         int                     i, j, k;
2132         struct workspace        *ws;
2133         int                     ws_idx_atom;
2134
2135
2136         if ((screens = calloc(ScreenCount(display),
2137              sizeof(struct swm_screen))) == NULL)
2138                 errx(1, "calloc: screens");
2139
2140         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2141
2142
2143         /* map physical screens */
2144         for (i = 0; i < ScreenCount(display); i++) {
2145                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2146                 screens[i].idx = i;
2147                 TAILQ_INIT(&screens[i].rl);
2148                 screens[i].root = RootWindow(display, i);
2149
2150                 /* set default colors */
2151                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2152                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2153                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2154                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2155                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2156
2157                 /* init all workspaces */
2158                 for (j = 0; j < SWM_WS_MAX; j++) {
2159                         ws = &screens[i].ws[j];
2160                         ws->idx = j;
2161                         ws->restack = 1;
2162                         ws->focus = NULL;
2163                         ws->r = NULL;
2164                         TAILQ_INIT(&ws->winlist);
2165
2166                         for (k = 0; layouts[k].l_stack != NULL; k++)
2167                                 if (layouts[k].l_config != NULL)
2168                                         layouts[k].l_config(ws,
2169                                             SWM_ARG_ID_STACKINIT);
2170                         ws->cur_layout = &layouts[0];
2171                 }
2172
2173                 /* map virtual screens onto physical screens */
2174                 screens[i].xrandr_support = XRRQueryExtension(display,
2175                     &xrandr_eventbase, &errorbase);
2176                 if (screens[i].xrandr_support)
2177                         if (XRRQueryVersion(display, &major, &minor) &&
2178                             major < 1)
2179                                 screens[i].xrandr_support = 0;
2180
2181 #if 0   /* not ready for dynamic screen changes */
2182                 if (screens[i].xrandr_support)
2183                         XRRSelectInput(display,
2184                             screens[r->s].root,
2185                             RRScreenChangeNotifyMask);
2186 #endif
2187
2188                 /* grab existing windows (before we build the bars)*/
2189                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2190                         continue;
2191
2192 #ifdef SWM_XRR_HAS_CRTC
2193                 sr = XRRGetScreenResources(display, screens[i].root);
2194                 if (sr == NULL)
2195                         new_region(&screens[i], &screens[i].ws[w],
2196                             0, 0, DisplayWidth(display, i),
2197                             DisplayHeight(display, i));
2198                 else
2199                         ncrtc = sr->ncrtc;
2200
2201                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2202                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2203                         if (ci->noutput == 0)
2204                                 continue;
2205
2206                         if (ci != NULL && ci->mode == None)
2207                                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2208                                     DisplayWidth(display, i),
2209                                     DisplayHeight(display, i));
2210                         else
2211                                 new_region(&screens[i], &screens[i].ws[w],
2212                                     ci->x, ci->y, ci->width, ci->height);
2213                         w++;
2214                 }
2215                 if (ci)
2216                         XRRFreeCrtcInfo(ci);
2217                 XRRFreeScreenResources(sr);
2218 #else
2219                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2220                     DisplayWidth(display, i),
2221                     DisplayHeight(display, i));
2222 #endif /* SWM_XRR_HAS_CRTC */
2223
2224                 /* attach windows to a region */
2225                 /* normal windows */
2226                 if ((r = TAILQ_FIRST(&screens[i].rl)) == NULL)
2227                         errx(1, "no regions on screen %d", i);
2228
2229                 for (i = 0; i < no; i++) {
2230                         XGetWindowAttributes(display, wins[i], &wa);
2231                         if (!XGetWindowAttributes(display, wins[i], &wa) ||
2232                             wa.override_redirect ||
2233                             XGetTransientForHint(display, wins[i], &d1))
2234                                 continue;
2235
2236                         if (wa.map_state == IsViewable ||
2237                             getstate(wins[i]) == NormalState)
2238                                 manage_window(wins[i]);
2239                 }
2240                 /* transient windows */
2241                 for (i = 0; i < no; i++) {
2242                         if (!XGetWindowAttributes(display, wins[i], &wa))
2243                                 continue;
2244
2245                         if (XGetTransientForHint(display, wins[i], &d1) &&
2246                             (wa.map_state == IsViewable || getstate(wins[i]) ==
2247                             NormalState))
2248                                 manage_window(wins[i]);
2249                 }
2250                 if (wins) {
2251                         XFree(wins);
2252                         wins = NULL;
2253                 }
2254         }
2255 }
2256
2257 int
2258 main(int argc, char *argv[])
2259 {
2260         struct passwd           *pwd;
2261         char                    conf[PATH_MAX], *cfile = NULL;
2262         struct stat             sb;
2263         XEvent                  e;
2264         int                     xfd;
2265         fd_set                  rd;
2266
2267         start_argv = argv;
2268         fprintf(stderr, "Welcome to scrotwm V%s\n", SWM_VERSION);
2269         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2270                 warnx("no locale support");
2271
2272         if (!(display = XOpenDisplay(0)))
2273                 errx(1, "can not open display");
2274
2275         if (active_wm())
2276                 errx(1, "other wm running");
2277
2278         astate = XInternAtom(display, "WM_STATE", False);
2279
2280         /* look for local and global conf file */
2281         pwd = getpwuid(getuid());
2282         if (pwd == NULL)
2283                 errx(1, "invalid user %d", getuid());
2284
2285         setup_screens();
2286
2287         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2288         if (stat(conf, &sb) != -1) {
2289                 if (S_ISREG(sb.st_mode))
2290                         cfile = conf;
2291         } else {
2292                 /* try global conf file */
2293                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2294                 if (!stat(conf, &sb))
2295                         if (S_ISREG(sb.st_mode))
2296                                 cfile = conf;
2297         }
2298         if (cfile)
2299                 conf_load(cfile);
2300         bar_refresh();
2301
2302         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2303
2304         grabkeys();
2305         stack();
2306
2307         xfd = ConnectionNumber(display);
2308         while (running) {
2309                 FD_ZERO(&rd);
2310                 FD_SET(xfd, &rd);
2311                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2312                         if (errno != EINTR)
2313                                 errx(1, "select failed");
2314                 if (bar_alarm) {
2315                         bar_alarm = 0;
2316                         bar_update();
2317                 }
2318                 while(XPending(display)) {
2319                         XNextEvent(display, &e);
2320                         if (handler[e.type])
2321                                 handler[e.type](&e);
2322                 }
2323         }
2324
2325         XCloseDisplay(display);
2326
2327         return (0);
2328 }