scrotwm.c

   1 /* $scrotwm$ */
   2 /*
   3  * Copyright (c) 2009 Marco Peereboom <marco@peereboom.us>
   4  * Copyright (c) 2009 Ryan McBride <mcbride@countersiege.com>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 /*
  19  * Much code and ideas taken from dwm under the following license:
  20  * MIT/X Consortium License
  21  *
  22  * 2006-2008 Anselm R Garbe <garbeam at gmail dot com>
  23  * 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
  24  * 2006-2007 Jukka Salmi <jukka at salmi dot ch>
  25  * 2007 Premysl Hruby <dfenze at gmail dot com>
  26  * 2007 Szabolcs Nagy <nszabolcs at gmail dot com>
  27  * 2007 Christof Musik <christof at sendfax dot de>
  28  * 2007-2008 Enno Gottox Boland <gottox at s01 dot de>
  29  * 2007-2008 Peter Hartlich <sgkkr at hartlich dot com>
  30  * 2008 Martin Hurton <martin dot hurton at gmail dot com>
  31  *
  32  * Permission is hereby granted, free of charge, to any person obtaining a
  33  * copy of this software and associated documentation files (the "Software"),
  34  * to deal in the Software without restriction, including without limitation
  35  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  36  * and/or sell copies of the Software, and to permit persons to whom the
  37  * Software is furnished to do so, subject to the following conditions:
  38  *
  39  * The above copyright notice and this permission notice shall be included in
  40  * all copies or substantial portions of the Software.
  41  *
  42  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  43  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  44  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  45  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  46  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  47  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  48  * DEALINGS IN THE SOFTWARE.
  49  */
  50
  51 #define SWM_VERSION     "0.5"
  52
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <err.h>
  56 #include <errno.h>
  57 #include <locale.h>
  58 #include <unistd.h>
  59 #include <time.h>
  60 #include <signal.h>
  61 #include <string.h>
  62 #include <util.h>
  63 #include <pwd.h>
  64
  65 #include <sys/types.h>
  66 #include <sys/time.h>
  67 #include <sys/stat.h>
  68 #include <sys/wait.h>
  69 #include <sys/queue.h>
  70 #include <sys/param.h>
  71 #include <sys/select.h>
  72
  73 #include <X11/cursorfont.h>
  74 #include <X11/keysym.h>
  75 #include <X11/Xatom.h>
  76 #include <X11/Xlib.h>
  77 #include <X11/Xproto.h>
  78 #include <X11/Xutil.h>
  79 #include <X11/extensions/Xrandr.h>
  80
  81 #if RANDR_MAJOR < 1
  82 #  error XRandR versions less than 1.0 are not supported
  83 #endif
  84
  85 #if RANDR_MAJOR >= 1
  86 #if RANDR_MINOR >= 2
  87 #define SWM_XRR_HAS_CRTC
  88 #endif
  89 #endif
  90
  91 /* #define SWM_DEBUG */
  92 #ifdef SWM_DEBUG
  93 #define DPRINTF(x...)           do { if (swm_debug) fprintf(stderr, x); } while(0)
  94 #define DNPRINTF(n,x...)        do { if (swm_debug & n) fprintf(stderr, x); } while(0)
  95 #define SWM_D_MISC              0x0001
  96 #define SWM_D_EVENT             0x0002
  97 #define SWM_D_WS                0x0004
  98 #define SWM_D_FOCUS             0x0008
  99 #define SWM_D_MOVE              0x0010
 100 #define SWM_D_STACK             0x0020
 101
 102 u_int32_t               swm_debug = 0
 103                             | SWM_D_MISC
 104                             | SWM_D_EVENT
 105                             | SWM_D_WS
 106                             | SWM_D_FOCUS
 107                             | SWM_D_MOVE
 108                             | SWM_D_STACK
 109                             ;
 110 #else
 111 #define DPRINTF(x...)
 112 #define DNPRINTF(n,x...)
 113 #endif
 114
 115 #define LENGTH(x)               (sizeof x / sizeof x[0])
 116 #define MODKEY                  Mod1Mask
 117 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
 118
 119 #define X(r)            (r)->g.x
 120 #define Y(r)            (r)->g.y
 121 #define WIDTH(r)        (r)->g.w
 122 #define HEIGHT(r)       (r)->g.h
 123
 124 char                    **start_argv;
 125 Atom                    astate;
 126 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 127 int                     other_wm;
 128 int                     running = 1;
 129 int                     xrandr_eventbase;
 130 int                     ignore_enter = 0;
 131 unsigned int            numlockmask = 0;
 132 Display                 *display;
 133
 134 /* dialog windows */
 135 double                  dialog_ratio = .6;
 136 /* status bar */
 137 #define SWM_BAR_MAX     (128)
 138 sig_atomic_t            bar_alarm = 0;
 139 int                     bar_enabled = 1;
 140 int                     bar_verbose = 1;
 141 int                     bar_height = 0;
 142 GC                      bar_gc;
 143 XGCValues               bar_gcv;
 144 XFontStruct             *bar_fs;
 145 char                    *bar_fonts[] = {
 146                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 147                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 148                             NULL
 149 };
 150
 151 /* terminal + args */
 152 char                            *spawn_term[] = { "xterm", NULL };
 153 char                            *spawn_menu[] = { "dmenu_run", NULL };
 154
 155 /* layout manager data */
 156 struct swm_geometry {
 157         int                     x;
 158         int                     y;
 159         int                     w;
 160         int                     h;
 161 };
 162
 163 struct swm_screen;
 164 struct workspace;
 165
 166 /* virtual "screens" */
 167 struct swm_region {
 168         TAILQ_ENTRY(swm_region) entry;
 169         struct swm_geometry     g;
 170         Window                  bar_window;
 171         struct workspace        *ws;    /* current workspace on this region */
 172         struct swm_screen       *s;     /* screen idx */
 173 };
 174 TAILQ_HEAD(swm_region_list, swm_region);
 175
 176
 177 struct ws_win {
 178         TAILQ_ENTRY(ws_win)     entry;
 179         Window                  id;
 180         struct swm_geometry     g;
 181         int                     focus;
 182         int                     floating;
 183         int                     transient;
 184         struct workspace        *ws;    /* always valid */
 185         struct swm_screen       *s;     /* always valid, never changes */
 186         XWindowAttributes       wa;
 187 };
 188 TAILQ_HEAD(ws_win_list, ws_win);
 189
 190 /* layout handlers */
 191 void    stack(void);
 192 void    vertical_init(struct workspace *);
 193 void    vertical_resize(struct workspace *, int);
 194 void    vertical_stack(struct workspace *, struct swm_geometry *);
 195 void    horizontal_init(struct workspace *);
 196 void    horizontal_resize(struct workspace *, int);
 197 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 198 void    max_init(struct workspace *);
 199 void    max_stack(struct workspace *, struct swm_geometry *);
 200
 201 struct layout {
 202         void            (*l_init)(struct workspace *);  /* init/reset */
 203         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 204         void            (*l_resize)(struct workspace *, int);
 205 } layouts[] =  {
 206         /* init                 stack,                  resize */
 207         { vertical_init,        vertical_stack,         vertical_resize},
 208         { horizontal_init,      horizontal_stack,       horizontal_resize},
 209         { NULL,                 max_stack,              NULL},
 210         { NULL,                 NULL,                   NULL},
 211 };
 212
 213 #define SWM_H_SLICE             (32)
 214 #define SWM_V_SLICE             (32)
 215
 216
 217 /* define work spaces */
 218 struct workspace {
 219         int                     idx;            /* workspace index */
 220         int                     restack;        /* restack on switch */
 221         struct layout           *cur_layout;    /* current layout handlers */
 222         struct ws_win           *focus;         /* may be NULL */
 223         struct swm_region       *r;             /* may be NULL */
 224         struct ws_win_list      winlist;        /* list of windows in ws */
 225
 226         /* stacker state */
 227         struct {
 228                                 int horizontal_msize;
 229                                 int vertical_msize;
 230         } l_state;
 231 };
 232
 233 /* physical screen mapping */
 234 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 235 struct swm_screen {
 236         int                     idx;            /* screen index */
 237         struct swm_region_list  rl;     /* list of regions on this screen */
 238         Window                  root;
 239         int                     xrandr_support;
 240         struct workspace        ws[SWM_WS_MAX];
 241
 242         /* colors */
 243         unsigned long           bar_border;
 244         unsigned long           bar_color;
 245         unsigned long           bar_font_color;
 246         unsigned long           color_focus;            /* XXX should this be per ws? */
 247         unsigned long           color_unfocus;
 248         char                    bar_text[SWM_BAR_MAX];
 249 };
 250 struct swm_screen       *screens;
 251 int                     num_screens;
 252 Window rootclick = 0;
 253
 254 struct ws_win           *cur_focus = NULL;
 255
 256 /* args to functions */
 257 union arg {
 258         int                     id;
 259 #define SWM_ARG_ID_FOCUSNEXT    (0)
 260 #define SWM_ARG_ID_FOCUSPREV    (1)
 261 #define SWM_ARG_ID_FOCUSMAIN    (2)
 262 #define SWM_ARG_ID_SWAPNEXT     (3)
 263 #define SWM_ARG_ID_SWAPPREV     (4)
 264 #define SWM_ARG_ID_SWAPMAIN     (5)
 265 #define SWM_ARG_ID_MASTERSHRINK (6)
 266 #define SWM_ARG_ID_MASTERGROW   (7)
 267         char                    **argv;
 268 };
 269
 270 unsigned long
 271 name_to_color(char *colorname)
 272 {
 273         Colormap                cmap;
 274         Status                  status;
 275         XColor                  screen_def, exact_def;
 276         unsigned long           result = 0;
 277         char                    cname[32] = "#";
 278
 279         cmap = DefaultColormap(display, screens[0].idx);
 280         status = XAllocNamedColor(display, cmap, colorname,
 281             &screen_def, &exact_def);
 282         if (!status) {
 283                 strlcat(cname, colorname + 2, sizeof cname - 1);
 284                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 285                     &exact_def);
 286         }
 287         if (status)
 288                 result = screen_def.pixel;
 289         else
 290                 fprintf(stderr, "color '%s' not found.\n", colorname);
 291
 292         return (result);
 293 }
 294
 295 /* conf file stuff */
 296 #define SWM_CONF_WS     "\n= \t"
 297 #define SWM_CONF_FILE   "scrotwm.conf"
 298 int
 299 conf_load(char *filename)
 300 {
 301         FILE                    *config;
 302         char                    *line, *cp, *var, *val;
 303         size_t                  len, lineno = 0;
 304         int                     i;
 305
 306         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 307
 308         if (filename == NULL)
 309                 return (1);
 310
 311         if ((config = fopen(filename, "r")) == NULL)
 312                 return (1);
 313
 314         for (;;) {
 315                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 316                         if (feof(config))
 317                                 break;
 318                 cp = line;
 319                 cp += (long)strspn(cp, SWM_CONF_WS);
 320                 if (cp[0] == '\0') {
 321                         /* empty line */
 322                         free(line);
 323                         continue;
 324                 }
 325                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 326                         break;
 327                 cp += (long)strspn(cp, SWM_CONF_WS);
 328                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 329                         break;
 330
 331                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 332                 switch (var[0]) {
 333                 case 'b':
 334                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 335                                 bar_enabled = atoi(val);
 336                         else if (!strncmp(var, "bar_border",
 337                             strlen("bar_border")))
 338                                 for (i = 0; i < ScreenCount(display); i++)
 339                                         screens[i].bar_border = name_to_color(val);
 340                         else if (!strncmp(var, "bar_color",
 341                             strlen("bar_color")))
 342                                 for (i = 0; i < ScreenCount(display); i++)
 343                                         screens[i].bar_color = name_to_color(val);
 344                         else if (!strncmp(var, "bar_font_color",
 345                             strlen("bar_font_color")))
 346                                 for (i = 0; i < ScreenCount(display); i++)
 347                                         screens[i].bar_font_color = name_to_color(val);
 348                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 349                                 asprintf(&bar_fonts[0], "%s", val);
 350                         else
 351                                 goto bad;
 352                         break;
 353
 354                 case 'c':
 355                         if (!strncmp(var, "color_focus", strlen("color_focus")))
 356                                 for (i = 0; i < ScreenCount(display); i++)
 357                                         screens[i].color_focus = name_to_color(val);
 358                         else if (!strncmp(var, "color_unfocus",
 359                             strlen("color_unfocus")))
 360                                 for (i = 0; i < ScreenCount(display); i++)
 361                                         screens[i].color_unfocus = name_to_color(val);
 362                         else
 363                                 goto bad;
 364                         break;
 365
 366                 case 'd':
 367                         if (!strncmp(var, "dialog_ratio",
 368                             strlen("dialog_ratio"))) {
 369                                 dialog_ratio = atof(val);
 370                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 371                                         dialog_ratio = .6;
 372                         } else
 373                                 goto bad;
 374                         break;
 375
 376                 case 's':
 377                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 378                                 asprintf(&spawn_term[0], "%s", val); /* XXX args? */
 379                         break;
 380                 default:
 381                         goto bad;
 382                 }
 383                 free(line);
 384         }
 385
 386         fclose(config);
 387         return (0);
 388 bad:
 389         errx(1, "invalid conf file entry: %s=%s", var, val);
 390 }
 391
 392 void
 393 bar_print(struct swm_region *r, char *s, int erase)
 394 {
 395         if (erase) {
 396                 XSetForeground(display, bar_gc, r->s->bar_color);
 397                 XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent,
 398                     r->s->bar_text, strlen(r->s->bar_text));
 399         }
 400
 401         strlcpy(r->s->bar_text, s, sizeof r->s->bar_text);
 402         XSetForeground(display, bar_gc, r->s->bar_font_color);
 403         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent,
 404             r->s->bar_text, strlen(r->s->bar_text));
 405 }
 406
 407 void
 408 bar_update(void)
 409 {
 410         time_t                  tmt;
 411         struct tm               tm;
 412         struct swm_region       *r;
 413         int                     i;
 414         char                    s[SWM_BAR_MAX];
 415
 416         if (bar_enabled == 0)
 417                 return;
 418
 419         /* draw new text */
 420         time(&tmt);
 421         localtime_r(&tmt, &tm);
 422         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 423         for (i = 0; i < ScreenCount(display); i++)
 424                 TAILQ_FOREACH(r, &screens[i].rl, entry)
 425                         bar_print(r, s, 1);
 426
 427         XSync(display, False);
 428         alarm(60);
 429 }
 430
 431 void
 432 bar_signal(int sig)
 433 {
 434         bar_alarm = 1;
 435 }
 436
 437 void
 438 bar_toggle(struct swm_region *r, union arg *args)
 439 {
 440         struct swm_region       *tmpr;
 441         int                     i, j;
 442
 443         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 444
 445         if (bar_enabled) {
 446                 for (i = 0; i < ScreenCount(display); i++)
 447                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 448                                 XUnmapWindow(display, tmpr->bar_window);
 449         } else {
 450                 for (i = 0; i < ScreenCount(display); i++)
 451                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 452                                 XMapRaised(display, tmpr->bar_window);
 453         }
 454         bar_enabled = !bar_enabled;
 455         XSync(display, False);
 456         for (i = 0; i < ScreenCount(display); i++)
 457                 for (j = 0; j < SWM_WS_MAX; j++)
 458                         screens[i].ws[j].restack = 1;
 459
 460         stack();
 461         /* must be after stack */
 462         for (i = 0; i < ScreenCount(display); i++)
 463                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 464                         bar_update();
 465 }
 466
 467 void
 468 bar_setup(struct swm_region *r)
 469 {
 470         int                     i;
 471
 472         for (i = 0; bar_fonts[i] != NULL; i++) {
 473                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 474                 if (bar_fs)
 475                         break;
 476         }
 477         if (bar_fonts[i] == NULL)
 478                         errx(1, "couldn't load font");
 479         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 480
 481         r->bar_window = XCreateSimpleWindow(display,
 482             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 483             1, r->s->bar_border, r->s->bar_color);
 484         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 485         XSetFont(display, bar_gc, bar_fs->fid);
 486         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 487         if (bar_enabled)
 488                 XMapRaised(display, r->bar_window);
 489         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 490
 491         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 492                 err(1, "could not install bar_signal");
 493         bar_update();
 494 }
 495
 496 void
 497 config_win(struct ws_win *win)
 498 {
 499         XConfigureEvent         ce;
 500
 501         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 502             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 503         ce.type = ConfigureNotify;
 504         ce.display = display;
 505         ce.event = win->id;
 506         ce.window = win->id;
 507         ce.x = win->g.x;
 508         ce.y = win->g.y;
 509         ce.width = win->g.w;
 510         ce.height = win->g.h;
 511         ce.border_width = 1; /* XXX store this! */
 512         ce.above = None;
 513         ce.override_redirect = False;
 514         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 515 }
 516
 517 int
 518 count_win(struct workspace *ws, int count_transient)
 519 {
 520         struct ws_win           *win;
 521         int                     count = 0;
 522
 523         TAILQ_FOREACH(win, &ws->winlist, entry) {
 524                 if (count_transient == 0 && win->floating)
 525                         continue;
 526                 if (count_transient == 0 && win->transient)
 527                         continue;
 528                 count++;
 529         }
 530         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 531
 532         return (count);
 533 }
 534
 535 void
 536 quit(struct swm_region *r, union arg *args)
 537 {
 538         DNPRINTF(SWM_D_MISC, "quit\n");
 539         running = 0;
 540 }
 541
 542 void
 543 restart(struct swm_region *r, union arg *args)
 544 {
 545         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 546
 547         /* disable alarm because the following code may not be interrupted */
 548         alarm(0);
 549         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 550                 errx(1, "can't disable alarm");
 551
 552         XCloseDisplay(display);
 553         execvp(start_argv[0], start_argv);
 554         fprintf(stderr, "execvp failed\n");
 555         perror(" failed");
 556         quit(NULL, NULL);
 557 }
 558
 559 struct swm_region *
 560 root_to_region(Window root)
 561 {
 562         struct swm_region       *r;
 563         Window                  rr, cr;
 564         int                     i, x, y, wx, wy;
 565         unsigned int            mask;
 566
 567         for (i = 0; i < ScreenCount(display); i++)
 568                 if (screens[i].root == root)
 569                         break;
 570
 571         if (rootclick != root && /* if root was just clicked in, use cursor */
 572             cur_focus && cur_focus->ws->r && cur_focus->s == &screens[i])
 573                 r = cur_focus->ws->r;
 574         else {
 575                 if (XQueryPointer(display, screens[i].root,
 576                     &rr, &cr, &x, &y, &wx, &wy, &mask) == False) {
 577                         r = TAILQ_FIRST(&screens[i].rl);
 578                 } else {
 579                         TAILQ_FOREACH(r, &screens[i].rl, entry) {
 580                                 if (x > X(r) && x < X(r) + WIDTH(r) &&
 581                                     y > Y(r) && y < Y(r) + HEIGHT(r))
 582                                         break;
 583                         }
 584
 585                         if (r == NULL)
 586                                 r = TAILQ_FIRST(&screens[i].rl);
 587                 }
 588         }
 589         return (r);
 590 }
 591
 592 struct ws_win *
 593 find_window(Window id)
 594 {
 595         struct ws_win           *win;
 596         int                     i, j;
 597
 598         for (i = 0; i < ScreenCount(display); i++)
 599                 for (j = 0; j < SWM_WS_MAX; j++)
 600                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 601                                 if (id == win->id)
 602                                         return (win);
 603         return (NULL);
 604 }
 605
 606 void
 607 spawn(struct swm_region *r, union arg *args)
 608 {
 609         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 610         /*
 611          * The double-fork construct avoids zombie processes and keeps the code
 612          * clean from stupid signal handlers.
 613          */
 614         if (fork() == 0) {
 615                 if (fork() == 0) {
 616                         if (display)
 617                                 close(ConnectionNumber(display));
 618                         setsid();
 619                         execvp(args->argv[0], args->argv);
 620                         fprintf(stderr, "execvp failed\n");
 621                         perror(" failed");
 622                 }
 623                 exit(0);
 624         }
 625         wait(0);
 626 }
 627
 628 void
 629 unfocus_win(struct ws_win *win)
 630 {
 631         DNPRINTF(SWM_D_FOCUS, "unfocus_win: id: %lu\n", win->id);
 632         if (win->ws->r && win->focus)
 633                 XSetWindowBorder(display, win->id,
 634                     win->ws->r->s->color_unfocus);
 635         win->focus = 0;
 636         if (win->ws->focus == win)
 637                 win->ws->focus = NULL;
 638         if (cur_focus == win)
 639                 cur_focus = NULL;
 640 }
 641
 642
 643 void
 644 focus_win(struct ws_win *win)
 645 {
 646         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win->id);
 647
 648         rootclick = 0;
 649
 650         win->ws->focus = win;
 651         if (win->ws->r != NULL) {
 652                 if (cur_focus && cur_focus != win)
 653                         unfocus_win(cur_focus);
 654                 cur_focus = win;
 655                 if (!win->focus)
 656                         XSetWindowBorder(display, win->id,
 657                             win->ws->r->s->color_focus);
 658                 win->focus = 1;
 659                 XSetInputFocus(display, win->id,
 660                     RevertToPointerRoot, CurrentTime);
 661         }
 662 }
 663
 664 void
 665 switchws(struct swm_region *r, union arg *args)
 666 {
 667         int                     wsid = args->id;
 668         struct swm_region       *this_r, *other_r;
 669         struct ws_win           *win;
 670         struct workspace        *new_ws, *old_ws;
 671
 672         this_r = r;
 673         old_ws = this_r->ws;
 674         new_ws = &this_r->s->ws[wsid];
 675
 676         DNPRINTF(SWM_D_WS, "switchws screen %d region %dx%d+%d+%d: "
 677             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
 678             old_ws->idx, wsid);
 679
 680         if (new_ws == old_ws)
 681                 return;
 682
 683         other_r = new_ws->r;
 684         if (!other_r) {
 685                 /* if the other workspace is hidden, switch windows */
 686                 /* map new window first to prevent ugly blinking */
 687                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
 688                         XMapRaised(display, win->id);
 689
 690                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
 691                         XUnmapWindow(display, win->id);
 692
 693                 old_ws->r = NULL;
 694                 old_ws->restack = 1;
 695         } else {
 696                 other_r->ws = old_ws;
 697                 old_ws->r = other_r;
 698         }
 699         this_r->ws = new_ws;
 700         new_ws->r = this_r;
 701
 702         ignore_enter = 1;
 703         /* set focus */
 704         if (new_ws->focus)
 705                 focus_win(new_ws->focus);
 706         stack();
 707 }
 708
 709 void
 710 swapwin(struct swm_region *r, union arg *args)
 711 {
 712         struct ws_win           *target;
 713         struct ws_win_list      *wl;
 714
 715
 716         DNPRINTF(SWM_D_WS, "swapwin id %d "
 717             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 718             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 719         if (cur_focus == NULL)
 720                 return;
 721
 722         wl = &cur_focus->ws->winlist;
 723
 724         switch (args->id) {
 725         case SWM_ARG_ID_SWAPPREV:
 726                 target = TAILQ_PREV(cur_focus, ws_win_list, entry);
 727                 TAILQ_REMOVE(wl, cur_focus, entry);
 728                 if (target == NULL)
 729                         TAILQ_INSERT_TAIL(wl, cur_focus, entry);
 730                 else
 731                         TAILQ_INSERT_BEFORE(target, cur_focus, entry);
 732                 break;
 733         case SWM_ARG_ID_SWAPNEXT:
 734                 target = TAILQ_NEXT(cur_focus, entry);
 735                 TAILQ_REMOVE(wl, cur_focus, entry);
 736                 if (target == NULL)
 737                         TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 738                 else
 739                         TAILQ_INSERT_AFTER(wl, target, cur_focus, entry);
 740                 break;
 741         case SWM_ARG_ID_SWAPMAIN:
 742                 target = TAILQ_FIRST(wl);
 743                 if (target == cur_focus)
 744                         return;
 745                 TAILQ_REMOVE(wl, target, entry);
 746                 TAILQ_INSERT_BEFORE(cur_focus, target, entry);
 747                 TAILQ_REMOVE(wl, cur_focus, entry);
 748                 TAILQ_INSERT_HEAD(wl, cur_focus, entry);
 749                 break;
 750         default:
 751                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
 752                 return;
 753         }
 754
 755         ignore_enter = 2;
 756         stack();
 757 }
 758
 759 void
 760 focus(struct swm_region *r, union arg *args)
 761 {
 762         struct ws_win           *winfocus, *winlostfocus;
 763         struct ws_win_list      *wl;
 764
 765         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
 766         if (cur_focus == NULL)
 767                 return;
 768
 769         wl = &cur_focus->ws->winlist;
 770
 771         winlostfocus = cur_focus;
 772
 773         switch (args->id) {
 774         case SWM_ARG_ID_FOCUSPREV:
 775                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
 776                 if (winfocus == NULL)
 777                         winfocus = TAILQ_LAST(wl, ws_win_list);
 778                 break;
 779
 780         case SWM_ARG_ID_FOCUSNEXT:
 781                 winfocus = TAILQ_NEXT(cur_focus, entry);
 782                 if (winfocus == NULL)
 783                         winfocus = TAILQ_FIRST(wl);
 784                 break;
 785
 786         case SWM_ARG_ID_FOCUSMAIN:
 787                 winfocus = TAILQ_FIRST(wl);
 788                 break;
 789
 790         default:
 791                 return;
 792         }
 793
 794         if (winfocus == winlostfocus)
 795                 return;
 796
 797         focus_win(winfocus);
 798         XSync(display, False);
 799 }
 800
 801 void
 802 cycle_layout(struct swm_region *r, union arg *args)
 803 {
 804         struct workspace        *ws = r->ws;
 805
 806         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
 807
 808         ws->cur_layout++;
 809         if (ws->cur_layout->l_stack == NULL)
 810                 ws->cur_layout = &layouts[0];
 811         ignore_enter = 1;
 812
 813         stack();
 814 }
 815
 816 void
 817 resize_master(struct swm_region *r, union arg *args)
 818 {
 819         struct workspace        *ws = r->ws;
 820
 821         DNPRINTF(SWM_D_STACK, "resize_master for workspace %d (id %d\n",
 822             args->id, ws->idx);
 823
 824         if (ws->cur_layout->l_resize != NULL)
 825                 ws->cur_layout->l_resize(ws, args->id);
 826 }
 827
 828 void
 829 stack_reset(struct swm_region *r, union arg *args)
 830 {
 831         struct workspace        *ws = r->ws;
 832
 833         DNPRINTF(SWM_D_STACK, "stack_reset: ws %d\n", ws->idx);
 834
 835         if (ws->cur_layout->l_init != NULL) {
 836                 ws->cur_layout->l_init(ws);
 837                 stack();
 838         }
 839 }
 840
 841 void
 842 stack(void) {
 843         struct swm_geometry     g;
 844         struct swm_region       *r;
 845         int                     i, j;
 846
 847         DNPRINTF(SWM_D_STACK, "stack\n");
 848
 849         for (i = 0; i < ScreenCount(display); i++) {
 850                 j = 0;
 851                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 852                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
 853                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
 854
 855                         /* start with screen geometry, adjust for bar */
 856                         g = r->g;
 857                         g.w -= 2;
 858                         g.h -= 2;
 859                         if (bar_enabled) {
 860                                 g.y += bar_height;
 861                                 g.h -= bar_height;
 862                         }
 863
 864                         r->ws->restack = 0;
 865                         r->ws->cur_layout->l_stack(r->ws, &g);
 866                 }
 867         }
 868         XSync(display, False);
 869 }
 870
 871 void
 872 stack_floater(struct ws_win *win, struct swm_region *r)
 873 {
 874         unsigned int            mask;
 875         XWindowChanges          wc;
 876
 877         bzero(&wc, sizeof wc);
 878         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
 879         wc.border_width = 1;
 880         if (win->transient) {
 881                 win->g.w = (double)WIDTH(r) * dialog_ratio;
 882                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
 883         }
 884         wc.width = win->g.w;
 885         wc.height = win->g.h;
 886         wc.x = (WIDTH(r) - win->g.w) / 2;
 887         wc.y = (HEIGHT(r) - win->g.h) / 2;
 888
 889         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
 890             win->id, wc.x, wc.y, wc.width, wc.height);
 891
 892         XConfigureWindow(display, win->id, mask, &wc);
 893 }
 894
 895 int vertical_msize[SWM_WS_MAX];
 896
 897 void
 898 vertical_init(struct workspace *ws)
 899 {
 900         DNPRINTF(SWM_D_MISC, "vertical_init: workspace: %d\n", ws->idx);
 901
 902         ws->l_state.vertical_msize = SWM_V_SLICE / 2;
 903 }
 904
 905 void
 906 vertical_resize(struct workspace *ws, int id)
 907 {
 908         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
 909
 910         switch (id) {
 911         case SWM_ARG_ID_MASTERSHRINK:
 912                 ws->l_state.vertical_msize--;
 913                 if (ws->l_state.vertical_msize < 1)
 914                         ws->l_state.vertical_msize = 1;
 915                 break;
 916         case SWM_ARG_ID_MASTERGROW:
 917                 ws->l_state.vertical_msize++;
 918                 if (ws->l_state.vertical_msize > SWM_V_SLICE - 1)
 919                         ws->l_state.vertical_msize = SWM_V_SLICE - 1;
 920                 break;
 921         default:
 922                 return;
 923         }
 924         stack();
 925 }
 926
 927 void
 928 vertical_stack(struct workspace *ws, struct swm_geometry *g) {
 929         XWindowChanges          wc;
 930         struct swm_geometry     gg = *g;
 931         struct ws_win           *win, *winfocus;
 932         int                     i, hrh, winno, main_width;
 933         unsigned int            mask;
 934
 935         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
 936
 937         if ((winno = count_win(ws, 0)) == 0)
 938                 return;
 939
 940         if (ws->focus == NULL)
 941                 ws->focus = TAILQ_FIRST(&ws->winlist);
 942         winfocus = cur_focus ? cur_focus : ws->focus;
 943
 944         if (winno > 1) {
 945                 main_width = (g->w / SWM_V_SLICE) *
 946                    ws->l_state.vertical_msize;
 947                 gg.w = main_width;
 948         }
 949
 950         if (winno > 2)
 951                 hrh = g->h / (winno - 1);
 952         else
 953                 hrh = 0;
 954
 955         i = 0;
 956         TAILQ_FOREACH(win, &ws->winlist, entry) {
 957                 if (i == 1) {
 958                         gg.x += main_width + 2;
 959                         gg.w = g->w - (main_width + 2);
 960                 }
 961                 if (i != 0 && hrh != 0) {
 962                         /* correct the last window for lost pixels */
 963                         if (win == TAILQ_LAST(&ws->winlist, ws_win_list)) {
 964                                 gg.h = hrh + (g->h - (i * hrh));
 965                                 gg.y += hrh;
 966                         } else {
 967                                 gg.h = hrh - 2;
 968                                 /* leave first right hand window at y = 0 */
 969                                 if (i > 1)
 970                                         gg.y += gg.h + 2;
 971                         }
 972                 }
 973
 974                 if (win->transient != 0 || win->floating != 0)
 975                         stack_floater(win, ws->r);
 976                 else {
 977                         bzero(&wc, sizeof wc);
 978                         wc.border_width = 1;
 979                         win->g.x = wc.x = gg.x;
 980                         win->g.y = wc.y = gg.y;
 981                         win->g.w = wc.width = gg.w;
 982                         win->g.h = wc.height = gg.h;
 983                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
 984                         XConfigureWindow(display, win->id, mask, &wc);
 985                 }
 986
 987                 XMapRaised(display, win->id);
 988                 i++;
 989         }
 990
 991         if (winfocus)
 992                 focus_win(winfocus); /* has to be done outside of the loop */
 993 }
 994
 995
 996 void
 997 horizontal_init(struct workspace *ws)
 998 {
 999         DNPRINTF(SWM_D_STACK, "horizontal_init: workspace: %d\n", ws->idx);
1000
1001         ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1002 }
1003
1004 void
1005 horizontal_resize(struct workspace *ws, int id)
1006 {
1007         DNPRINTF(SWM_D_STACK, "horizontal_resize: workspace: %d\n", ws->idx);
1008
1009         switch (id) {
1010         case SWM_ARG_ID_MASTERSHRINK:
1011                 ws->l_state.horizontal_msize--;
1012                 if (ws->l_state.horizontal_msize < 1)
1013                         ws->l_state.horizontal_msize = 1;
1014                 break;
1015         case SWM_ARG_ID_MASTERGROW:
1016                 ws->l_state.horizontal_msize++;
1017                 if (ws->l_state.horizontal_msize > SWM_H_SLICE - 1)
1018                         ws->l_state.horizontal_msize = SWM_H_SLICE - 1;
1019                 break;
1020         default:
1021                 return;
1022         }
1023         stack();
1024 }
1025
1026 void
1027 horizontal_stack(struct workspace *ws, struct swm_geometry *g) {
1028         XWindowChanges          wc;
1029         struct swm_geometry     gg = *g;
1030         struct ws_win           *win, *winfocus;
1031         int                     i, hrw, winno, main_height;
1032         unsigned int            mask;
1033
1034         DNPRINTF(SWM_D_STACK, "horizontal_stack: workspace: %d\n", ws->idx);
1035
1036         if ((winno = count_win(ws, 0)) == 0)
1037                 return;
1038
1039         if (ws->focus == NULL)
1040                 ws->focus = TAILQ_FIRST(&ws->winlist);
1041         winfocus = cur_focus ? cur_focus : ws->focus;
1042
1043         if (winno > 1) {
1044                 main_height = (g->h / SWM_H_SLICE) *
1045                     ws->l_state.horizontal_msize;
1046                 gg.h = main_height;
1047         }
1048
1049         if (winno > 2)
1050                 hrw = g->w / (winno - 1);
1051         else
1052                 hrw = 0;
1053
1054         i = 0;
1055         TAILQ_FOREACH(win, &ws->winlist, entry) {
1056                 if (i == 1) {
1057                         gg.y += main_height + 2;
1058                         gg.h = g->h - (main_height + 2);
1059                 }
1060                 if (i != 0 && hrw != 0) {
1061                         /* correct the last window for lost pixels */
1062                         if (win == TAILQ_LAST(&ws->winlist, ws_win_list)) {
1063                                 gg.w = hrw + (g->w - (i * hrw));
1064                                 gg.x += hrw;
1065                         } else {
1066                                 gg.w = hrw - 2;
1067                                 /* leave first bottom window at x = 0 */
1068                                 if (i > 1)
1069                                         gg.x += gg.w + 2;
1070                         }
1071                 }
1072
1073                 if (win->transient != 0 || win->floating != 0)
1074                         stack_floater(win, ws->r);
1075                 else {
1076                         bzero(&wc, sizeof wc);
1077                         wc.border_width = 1;
1078                         win->g.x = wc.x = gg.x;
1079                         win->g.y = wc.y = gg.y;
1080                         win->g.w = wc.width = gg.w;
1081                         win->g.h = wc.height = gg.h;
1082                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1083                         XConfigureWindow(display, win->id, mask, &wc);
1084                 }
1085
1086                 XMapRaised(display, win->id);
1087                 i++;
1088         }
1089
1090         if (winfocus)
1091                 focus_win(winfocus); /* this has to be done outside of the loop */
1092 }
1093
1094 /* fullscreen view */
1095 void
1096 max_stack(struct workspace *ws, struct swm_geometry *g) {
1097         XWindowChanges          wc;
1098         struct swm_geometry     gg = *g;
1099         struct ws_win           *win, *winfocus;
1100         unsigned int            mask;
1101
1102         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1103
1104         if (count_win(ws, 0) == 0)
1105                 return;
1106
1107         if (ws->focus == NULL)
1108                 ws->focus = TAILQ_FIRST(&ws->winlist);
1109         winfocus = cur_focus ? cur_focus : ws->focus;
1110
1111         TAILQ_FOREACH(win, &ws->winlist, entry) {
1112                 if (win->transient != 0 || win->floating != 0) {
1113                         if (win == ws->focus) {
1114                                 /* XXX maximize? */
1115                                 stack_floater(win, ws->r);
1116                                 XMapRaised(display, win->id);
1117                         } else
1118                                 XUnmapWindow(display, win->id);
1119                 } else {
1120                         bzero(&wc, sizeof wc);
1121                         wc.border_width = 1;
1122                         win->g.x = wc.x = gg.x;
1123                         win->g.y = wc.y = gg.y;
1124                         win->g.w = wc.width = gg.w;
1125                         win->g.h = wc.height = gg.h;
1126                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1127                         XConfigureWindow(display, win->id, mask, &wc);
1128
1129                         if (win == ws->focus) {
1130                                 XMapRaised(display, win->id);
1131                         } else
1132                                 XUnmapWindow(display, win->id);
1133                 }
1134         }
1135
1136         if (winfocus)
1137                 focus_win(winfocus); /* has to be done outside of the loop */
1138 }
1139
1140 void
1141 send_to_ws(struct swm_region *r, union arg *args)
1142 {
1143         int                     wsid = args->id;
1144         struct ws_win           *win = cur_focus;
1145         struct workspace        *ws, *nws;
1146
1147         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1148
1149         ws = win->ws;
1150         nws = &win->s->ws[wsid];
1151
1152         XUnmapWindow(display, win->id);
1153
1154         /* find a window to focus */
1155         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1156         if (ws->focus == NULL)
1157                 ws->focus = TAILQ_FIRST(&ws->winlist);
1158         if (ws->focus == win)
1159                 ws->focus = NULL;
1160
1161         TAILQ_REMOVE(&ws->winlist, win, entry);
1162
1163         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1164         win->ws = nws;
1165
1166         if (count_win(nws, 1) == 1)
1167                 nws->focus = win;
1168         ws->restack = 1;
1169         nws->restack = 1;
1170
1171         stack();
1172 }
1173
1174 /* key definitions */
1175 struct key {
1176         unsigned int            mod;
1177         KeySym                  keysym;
1178         void                    (*func)(struct swm_region *r, union arg *);
1179         union arg               args;
1180 } keys[] = {
1181         /* modifier             key     function                argument */
1182         { MODKEY,               XK_space,       cycle_layout,   {0} },
1183         { MODKEY | ShiftMask,   XK_space,       stack_reset,    {0} },
1184         { MODKEY,               XK_h,           resize_master,  {.id = SWM_ARG_ID_MASTERSHRINK} },
1185         { MODKEY,               XK_l,           resize_master,  {.id = SWM_ARG_ID_MASTERGROW} },
1186         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1187         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1188         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1189         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1190         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1191         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1192         { MODKEY,               XK_p,           spawn,          {.argv = spawn_menu} },
1193         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1194         { MODKEY,               XK_q,           restart,        {0} },
1195         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1196         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1197         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1198         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1199         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1200         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1201         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1202         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1203         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1204         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1205         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1206         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1207         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1208         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1209         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1210         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1211         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1212         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1213         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1214         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1215         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1216         { MODKEY,               XK_b,           bar_toggle,     {0} },
1217         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1218         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1219 };
1220
1221 void
1222 updatenumlockmask(void)
1223 {
1224         unsigned int            i, j;
1225         XModifierKeymap         *modmap;
1226
1227         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1228         numlockmask = 0;
1229         modmap = XGetModifierMapping(display);
1230         for (i = 0; i < 8; i++)
1231                 for (j = 0; j < modmap->max_keypermod; j++)
1232                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1233                           == XKeysymToKeycode(display, XK_Num_Lock))
1234                                 numlockmask = (1 << i);
1235
1236         XFreeModifiermap(modmap);
1237 }
1238
1239 void
1240 grabkeys(void)
1241 {
1242         unsigned int            i, j, k;
1243         KeyCode                 code;
1244         unsigned int            modifiers[] =
1245             { 0, LockMask, numlockmask, numlockmask | LockMask };
1246
1247         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1248         updatenumlockmask();
1249
1250         for (k = 0; k < ScreenCount(display); k++) {
1251                 if (TAILQ_EMPTY(&screens[k].rl))
1252                         continue;
1253                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1254                 for (i = 0; i < LENGTH(keys); i++) {
1255                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1256                                 for (j = 0; j < LENGTH(modifiers); j++)
1257                                         XGrabKey(display, code,
1258                                             keys[i].mod | modifiers[j],
1259                                             screens[k].root, True,
1260                                             GrabModeAsync, GrabModeAsync);
1261                 }
1262         }
1263 }
1264 void
1265 expose(XEvent *e)
1266 {
1267         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1268 }
1269
1270 void
1271 keypress(XEvent *e)
1272 {
1273         unsigned int            i;
1274         KeySym                  keysym;
1275         XKeyEvent               *ev = &e->xkey;
1276
1277         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1278
1279         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1280         for (i = 0; i < LENGTH(keys); i++)
1281                 if (keysym == keys[i].keysym
1282                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1283                    && keys[i].func)
1284                         keys[i].func(root_to_region(ev->root),
1285                             &(keys[i].args));
1286 }
1287
1288 void
1289 buttonpress(XEvent *e)
1290 {
1291         XButtonPressedEvent     *ev = &e->xbutton;
1292 #ifdef SWM_CLICKTOFOCUS
1293         struct ws_win           *win;
1294         struct workspace        *ws;
1295         struct swm_region       *r;
1296 #endif
1297
1298         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
1299
1300         if (ev->window == ev->root) {
1301                 rootclick = ev->root;
1302                 return;
1303         }
1304         if (ev->window == cur_focus->id)
1305                 return;
1306 #ifdef SWM_CLICKTOFOCUS
1307         r = root_to_region(ev->root);
1308         ws = r->ws;
1309         TAILQ_FOREACH(win, &ws->winlist, entry)
1310                 if (win->id == ev->window) {
1311                         /* focus in the clicked window */
1312                         XSetWindowBorder(display, ev->window, 0xff0000);
1313                         XSetWindowBorder(display, ws->focus->id, 0x888888);
1314                         XSetInputFocus(display, ev->window, RevertToPointerRoot,
1315                             CurrentTime);
1316                         ws->focus = win;
1317                         XSync(display, False);
1318                         break;
1319         }
1320 #endif
1321 }
1322
1323 void
1324 set_win_state(struct ws_win *win, long state)
1325 {
1326         long                    data[] = {state, None};
1327
1328         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
1329
1330         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
1331             (unsigned char *)data, 2);
1332 }
1333
1334 struct ws_win *
1335 manage_window(Window id, struct workspace *ws)
1336 {
1337         Window                  trans;
1338         struct ws_win           *win;
1339         XClassHint              ch;
1340
1341         TAILQ_FOREACH(win, &ws->winlist, entry) {
1342                 if (win->id == id)
1343                         return (win);   /* already being managed */
1344         }
1345
1346         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1347                 errx(1, "calloc: failed to allocate memory for new window");
1348
1349         win->id = id;
1350         win->ws = ws;
1351         win->s = ws->r->s;      /* this never changes */
1352         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
1353
1354         /* make new win focused */
1355         focus_win(win);
1356
1357         XGetTransientForHint(display, win->id, &trans);
1358         if (trans) {
1359                 win->transient = trans;
1360                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
1361                     (unsigned)win->id, win->transient);
1362         }
1363         XGetWindowAttributes(display, id, &win->wa);
1364         win->g.w = win->wa.width;
1365         win->g.h = win->wa.height;
1366         win->g.x = win->wa.x;
1367         win->g.y = win->wa.y;
1368
1369         /* XXX make this a table */
1370         bzero(&ch, sizeof ch);
1371         if (XGetClassHint(display, win->id, &ch)) {
1372                 /*fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name); */
1373                 if (!strcmp(ch.res_class, "MPlayer") && !strcmp(ch.res_name, "xv")) {
1374                         win->floating = 1;
1375                 }
1376                 if (ch.res_class)
1377                         XFree(ch.res_class);
1378                 if (ch.res_name)
1379                         XFree(ch.res_name);
1380         }
1381
1382         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
1383             PropertyChangeMask | StructureNotifyMask);
1384
1385         set_win_state(win, NormalState);
1386
1387         return (win);
1388 }
1389
1390 void
1391 configurerequest(XEvent *e)
1392 {
1393         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1394         struct ws_win           *win;
1395         int                     new = 1;
1396         XWindowChanges          wc;
1397
1398         if ((win = find_window(ev->window)) == NULL)
1399                 new = 1;
1400
1401         if (new) {
1402                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
1403                     ev->window);
1404                 bzero(&wc, sizeof wc);
1405                 wc.x = ev->x;
1406                 wc.y = ev->y;
1407                 wc.width = ev->width;
1408                 wc.height = ev->height;
1409                 wc.border_width = ev->border_width;
1410                 wc.sibling = ev->above;
1411                 wc.stack_mode = ev->detail;
1412                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
1413         } else {
1414                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
1415                     ev->window);
1416                 if (win->floating) {
1417                         if (ev->value_mask & CWX)
1418                                 win->g.x = ev->x;
1419                         if (ev->value_mask & CWY)
1420                                 win->g.y = ev->y;
1421                         if (ev->value_mask & CWWidth)
1422                                 win->g.w = ev->width;
1423                         if (ev->value_mask & CWHeight)
1424                                 win->g.h = ev->height;
1425                         if (win->ws->r != NULL) {
1426                                 /* this seems to be full screen */
1427                                 if (win->g.w > WIDTH(win->ws->r)) {
1428                                         /* kill border */
1429                                         win->g.x -= 1;
1430                                         win->g.w += 1;
1431                                 }
1432                                 if (win->g.h > HEIGHT(win->ws->r)) {
1433                                         /* kill border */
1434                                         win->g.y -= 1;
1435                                         win->g.h += 1;
1436                                 }
1437                         }
1438                         if ((ev->value_mask & (CWX|CWY)) &&
1439                             !(ev->value_mask & (CWWidth|CWHeight)))
1440                                 config_win(win);
1441                         XMoveResizeWindow(display, win->id,
1442                             win->g.x, win->g.y, win->g.w, win->g.h);
1443                 } else
1444                         config_win(win);
1445         }
1446 }
1447
1448 void
1449 configurenotify(XEvent *e)
1450 {
1451         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1452             e->xconfigure.window);
1453 }
1454
1455 void
1456 destroynotify(XEvent *e)
1457 {
1458         struct ws_win           *win;
1459         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1460
1461         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1462
1463         if ((win = find_window(ev->window)) != NULL) {
1464                 struct workspace *ws = win->ws;
1465                 /* find a window to focus */
1466                 if (ws->focus == win)
1467                         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1468                 if (ws->focus == NULL)
1469                         ws->focus = TAILQ_FIRST(&ws->winlist);
1470                 if (ws->focus == win)
1471                         ws->focus = NULL;
1472                 if (cur_focus == win) {
1473                         if (ws->focus == NULL)
1474                                 unfocus_win(win); /* XXX focus another ws? */
1475                         else
1476                                 focus_win(ws->focus);
1477                 }
1478
1479                 TAILQ_REMOVE(&ws->winlist, win, entry);
1480                 set_win_state(win, WithdrawnState);
1481                 free(win);
1482         }
1483         stack();
1484 }
1485
1486 void
1487 enternotify(XEvent *e)
1488 {
1489         XCrossingEvent          *ev = &e->xcrossing;
1490         struct ws_win           *win;
1491         int                     i, j;
1492
1493         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1494
1495         if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) &&
1496             ev->window != ev->root)
1497                 return;
1498         if (ignore_enter) {
1499                 /* eat event(r) to prevent autofocus */
1500                 ignore_enter--;
1501                 return;
1502         }
1503         /* brute force for now */
1504         for (i = 0; i < ScreenCount(display); i++) {
1505                 for (j = 0; j < SWM_WS_MAX; j++) {
1506                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist , entry) {
1507                                 if (win->id == ev->window)
1508                                         focus_win(win);
1509                         }
1510                 }
1511         }
1512 }
1513
1514 void
1515 focusin(XEvent *e)
1516 {
1517         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
1518
1519         /* XXX this probably needs better handling now.
1520         if (ev->window == ev->root)
1521                 return;
1522         */
1523         /*
1524          * kill grab for now so that we can cut and paste , this screws up
1525          * click to focus
1526          */
1527         /*
1528         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu grabbing\n", ev->window);
1529         XGrabButton(display, Button1, AnyModifier, ev->window, False,
1530             ButtonPress, GrabModeAsync, GrabModeSync, None, None);
1531         */
1532 }
1533
1534 void
1535 mappingnotify(XEvent *e)
1536 {
1537         XMappingEvent           *ev = &e->xmapping;
1538
1539         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1540
1541         XRefreshKeyboardMapping(ev);
1542         if (ev->request == MappingKeyboard)
1543                 grabkeys();
1544 }
1545
1546 void
1547 maprequest(XEvent *e)
1548 {
1549         XMapRequestEvent        *ev = &e->xmaprequest;
1550         XWindowAttributes       wa;
1551         struct swm_region       *r;
1552
1553         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1554             e->xmaprequest.window);
1555
1556         if (!XGetWindowAttributes(display, ev->window, &wa))
1557                 return;
1558         if (wa.override_redirect)
1559                 return;
1560         r = root_to_region(wa.root);
1561         manage_window(e->xmaprequest.window, r->ws);
1562         stack();
1563 }
1564
1565 void
1566 propertynotify(XEvent *e)
1567 {
1568         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
1569             e->xproperty.window);
1570 }
1571
1572 void
1573 unmapnotify(XEvent *e)
1574 {
1575         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
1576 }
1577
1578 void
1579 visibilitynotify(XEvent *e)
1580 {
1581         int                     i;
1582         struct swm_region       *r;
1583
1584         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
1585             e->xvisibility.window);
1586         if (e->xvisibility.state == VisibilityUnobscured)
1587                 for (i = 0; i < ScreenCount(display); i++)
1588                         TAILQ_FOREACH(r, &screens[i].rl, entry)
1589                                 if (e->xvisibility.window == r->bar_window)
1590                                         bar_update();
1591 }
1592
1593 void                    (*handler[LASTEvent])(XEvent *) = {
1594                                 [Expose] = expose,
1595                                 [KeyPress] = keypress,
1596                                 [ButtonPress] = buttonpress,
1597                                 [ConfigureRequest] = configurerequest,
1598                                 [ConfigureNotify] = configurenotify,
1599                                 [DestroyNotify] = destroynotify,
1600                                 [EnterNotify] = enternotify,
1601                                 [FocusIn] = focusin,
1602                                 [MappingNotify] = mappingnotify,
1603                                 [MapRequest] = maprequest,
1604                                 [PropertyNotify] = propertynotify,
1605                                 [UnmapNotify] = unmapnotify,
1606                                 [VisibilityNotify] = visibilitynotify,
1607 };
1608
1609 int
1610 xerror_start(Display *d, XErrorEvent *ee)
1611 {
1612         other_wm = 1;
1613         return (-1);
1614 }
1615
1616 int
1617 xerror(Display *d, XErrorEvent *ee)
1618 {
1619         /* fprintf(stderr, "error: %p %p\n", display, ee); */
1620         return (-1);
1621 }
1622
1623 int
1624 active_wm(void)
1625 {
1626         other_wm = 0;
1627         xerrorxlib = XSetErrorHandler(xerror_start);
1628
1629         /* this causes an error if some other window manager is running */
1630         XSelectInput(display, DefaultRootWindow(display),
1631             SubstructureRedirectMask);
1632         XSync(display, False);
1633         if (other_wm)
1634                 return (1);
1635
1636         XSetErrorHandler(xerror);
1637         XSync(display, False);
1638         return (0);
1639 }
1640
1641 long
1642 getstate(Window w)
1643 {
1644         int                     format, status;
1645         long                    result = -1;
1646         unsigned char           *p = NULL;
1647         unsigned long           n, extra;
1648         Atom                    real;
1649
1650         astate = XInternAtom(display, "WM_STATE", False);
1651         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
1652             &real, &format, &n, &extra, (unsigned char **)&p);
1653         if (status != Success)
1654                 return (-1);
1655         if (n != 0)
1656                 result = *p;
1657         XFree(p);
1658         return (result);
1659 }
1660
1661 void
1662 new_region(struct swm_screen *s, struct workspace *ws,
1663     int x, int y, int w, int h)
1664 {
1665         struct swm_region       *r;
1666
1667         DNPRINTF(SWM_D_MISC, "new region on screen %d: %dx%d (%d, %d)\n",
1668              s->idx, x, y, w, h);
1669
1670         if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
1671                 errx(1, "calloc: failed to allocate memory for screen");
1672
1673         X(r) = x;
1674         Y(r) = y;
1675         WIDTH(r) = w;
1676         HEIGHT(r) = h;
1677         r->s = s;
1678         r->ws = ws;
1679         ws->r = r;
1680         TAILQ_INSERT_TAIL(&s->rl, r, entry);
1681         bar_setup(r);
1682 }
1683
1684 void
1685 setup_screens(void)
1686 {
1687 #ifdef SWM_XRR_HAS_CRTC
1688         XRRCrtcInfo             *ci;
1689         XRRScreenResources      *sr;
1690         int                     c;
1691 #endif /* SWM_XRR_HAS_CRTC */
1692         Window                  d1, d2, *wins = NULL;
1693         XWindowAttributes       wa;
1694         struct swm_region       *r;
1695         unsigned int            no;
1696         int                     errorbase, major, minor;
1697         int                     ncrtc = 0, w = 0;
1698         int                     i, j, k;
1699         struct workspace        *ws;
1700
1701         if ((screens = calloc(ScreenCount(display),
1702              sizeof(struct swm_screen))) == NULL)
1703                 errx(1, "calloc: screens");
1704
1705         /* map physical screens */
1706         for (i = 0; i < ScreenCount(display); i++) {
1707                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
1708                 screens[i].idx = i;
1709                 TAILQ_INIT(&screens[i].rl);
1710                 screens[i].root = RootWindow(display, i);
1711                 XGetWindowAttributes(display, screens[i].root, &wa);
1712                 XSelectInput(display, screens[i].root,
1713                     ButtonPressMask | wa.your_event_mask);
1714
1715                 /* set default colors */
1716                 screens[i].color_focus = name_to_color("red");
1717                 screens[i].color_unfocus = name_to_color("rgb:88/88/88");
1718                 screens[i].bar_border = name_to_color("rgb:00/80/80");
1719                 screens[i].bar_color = name_to_color("black");
1720                 screens[i].bar_font_color = name_to_color("rgb:a0/a0/a0");
1721
1722                 /* init all workspaces */
1723                 for (j = 0; j < SWM_WS_MAX; j++) {
1724                         ws = &screens[i].ws[j];
1725                         ws->idx = j;
1726                         ws->restack = 1;
1727                         ws->focus = NULL;
1728                         ws->r = NULL;
1729                         TAILQ_INIT(&ws->winlist);
1730
1731                         for (k = 0; layouts[k].l_stack != NULL; k++)
1732                                 if (layouts[k].l_init != NULL)
1733                                         layouts[k].l_init(ws);
1734                         ws->cur_layout = &layouts[0];
1735                 }
1736
1737                 /* map virtual screens onto physical screens */
1738                 screens[i].xrandr_support = XRRQueryExtension(display,
1739                     &xrandr_eventbase, &errorbase);
1740                 if (screens[i].xrandr_support)
1741                         if (XRRQueryVersion(display, &major, &minor) &&
1742                             major < 1)
1743                                 screens[i].xrandr_support = 0;
1744
1745 #if 0   /* not ready for dynamic screen changes */
1746                 if (screens[i].xrandr_support)
1747                         XRRSelectInput(display,
1748                             screens[r->s].root,
1749                             RRScreenChangeNotifyMask);
1750 #endif
1751
1752                 /* grab existing windows (before we build the bars)*/
1753                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
1754                         continue;
1755
1756 #ifdef SWM_XRR_HAS_CRTC
1757                 sr = XRRGetScreenResources(display, screens[i].root);
1758                 if (sr == NULL)
1759                         new_region(&screens[i], &screens[i].ws[w],
1760                             0, 0, DisplayWidth(display, i),
1761                             DisplayHeight(display, i));
1762                 else
1763                         ncrtc = sr->ncrtc;
1764
1765                 for (c = 0; c < ncrtc; c++) {
1766                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
1767                         if (ci->noutput == 0)
1768                                 continue;
1769
1770                         if (ci != NULL && ci->mode == None)
1771                                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
1772                                     DisplayWidth(display, i),
1773                                     DisplayHeight(display, i));
1774                         else
1775                                 new_region(&screens[i], &screens[i].ws[w],
1776                                     ci->x, ci->y, ci->width, ci->height);
1777                         w++;
1778                 }
1779                 XRRFreeCrtcInfo(ci);
1780                 XRRFreeScreenResources(sr);
1781 #else
1782                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
1783                     DisplayWidth(display, i),
1784                     DisplayHeight(display, i));
1785 #endif /* SWM_XRR_HAS_CRTC */
1786
1787                 /* attach windows to a region */
1788                 /* normal windows */
1789                 if ((r = TAILQ_FIRST(&screens[i].rl)) == NULL)
1790                         errx(1, "no regions on screen %d", i);
1791
1792                 for (i = 0; i < no; i++) {
1793                         XGetWindowAttributes(display, wins[i], &wa);
1794                         if (!XGetWindowAttributes(display, wins[i], &wa) ||
1795                             wa.override_redirect ||
1796                             XGetTransientForHint(display, wins[i], &d1))
1797                                 continue;
1798
1799                         if (wa.map_state == IsViewable ||
1800                             getstate(wins[i]) == NormalState)
1801                                 manage_window(wins[i], r->ws);
1802                 }
1803                 /* transient windows */
1804                 for (i = 0; i < no; i++) {
1805                         if (!XGetWindowAttributes(display, wins[i], &wa))
1806                                 continue;
1807
1808                         if (XGetTransientForHint(display, wins[i], &d1) &&
1809                             (wa.map_state == IsViewable || getstate(wins[i]) ==
1810                             NormalState))
1811                                 manage_window(wins[i], r->ws);
1812                 }
1813                 if (wins) {
1814                         XFree(wins);
1815                         wins = NULL;
1816                 }
1817         }
1818 }
1819
1820 int
1821 main(int argc, char *argv[])
1822 {
1823         struct passwd           *pwd;
1824         char                    conf[PATH_MAX], *cfile = NULL;
1825         struct stat             sb;
1826         XEvent                  e;
1827         int                     xfd;
1828         fd_set                  rd;
1829
1830         start_argv = argv;
1831         fprintf(stderr, "Welcome to scrotwm V%s\n", SWM_VERSION);
1832         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
1833                 warnx("no locale support");
1834
1835         if (!(display = XOpenDisplay(0)))
1836                 errx(1, "can not open display");
1837
1838         if (active_wm())
1839                 errx(1, "other wm running");
1840
1841         astate = XInternAtom(display, "WM_STATE", False);
1842
1843         /* look for local and global conf file */
1844         pwd = getpwuid(getuid());
1845         if (pwd == NULL)
1846                 errx(1, "invalid user %d", getuid());
1847
1848         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
1849         if (stat(conf, &sb) != -1) {
1850                 if (S_ISREG(sb.st_mode))
1851                         cfile = conf;
1852         } else {
1853                 /* try global conf file */
1854                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
1855                 if (!stat(conf, &sb))
1856                         if (S_ISREG(sb.st_mode))
1857                                 cfile = conf;
1858         }
1859         if (cfile)
1860                 conf_load(cfile);
1861
1862         setup_screens();
1863
1864         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
1865
1866         grabkeys();
1867         stack();
1868
1869         xfd = ConnectionNumber(display);
1870         while (running) {
1871                 FD_SET(xfd, &rd);
1872                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
1873                         if (errno != EINTR)
1874                                 errx(1, "select failed");
1875                 if (bar_alarm) {
1876                         bar_alarm = 0;
1877                         bar_update();
1878                 }
1879                 while(XPending(display)) {
1880                         XNextEvent(display, &e);
1881                         if (handler[e.type])
1882                                 handler[e.type](&e);
1883                 }
1884         }
1885
1886         XCloseDisplay(display);
1887
1888         return (0);
1889 }