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 <locale.h>
  57 #include <unistd.h>
  58 #include <time.h>
  59 #include <signal.h>
  60 #include <string.h>
  61 #include <util.h>
  62 #include <pwd.h>
  63
  64 #include <sys/types.h>
  65 #include <sys/stat.h>
  66 #include <sys/wait.h>
  67 #include <sys/queue.h>
  68 #include <sys/param.h>
  69
  70 #include <X11/cursorfont.h>
  71 #include <X11/keysym.h>
  72 #include <X11/Xatom.h>
  73 #include <X11/Xlib.h>
  74 #include <X11/Xproto.h>
  75 #include <X11/Xutil.h>
  76
  77 /* #define SWM_DEBUG */
  78 #ifdef SWM_DEBUG
  79 #define DPRINTF(x...)           do { if (swm_debug) fprintf(stderr, x); } while(0)
  80 #define DNPRINTF(n,x...)        do { if (swm_debug & n) fprintf(stderr, x); } while(0)
  81 #define SWM_D_MISC              0x0001
  82 #define SWM_D_EVENT             0x0002
  83 #define SWM_D_WS                0x0004
  84 #define SWM_D_FOCUS             0x0008
  85 #define SWM_D_MOVE              0x0010
  86
  87 u_int32_t               swm_debug = 0
  88                             | SWM_D_MISC
  89                             | SWM_D_EVENT
  90                             | SWM_D_WS
  91                             | SWM_D_FOCUS
  92                             | SWM_D_MOVE
  93                             ;
  94 #else
  95 #define DPRINTF(x...)
  96 #define DNPRINTF(n,x...)
  97 #endif
  98
  99 #define LENGTH(x)               (sizeof x / sizeof x[0])
 100 #define MODKEY                  Mod1Mask
 101 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
 102
 103 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 104 int                     other_wm;
 105 int                     screen;
 106 int                     running = 1;
 107 int                     ignore_enter = 0;
 108 unsigned int            numlockmask = 0;
 109 unsigned long           color_focus = 0xff0000; /* XXX should this be per ws? */
 110 unsigned long           color_unfocus = 0x888888;
 111 Display                 *display;
 112 Window                  root;
 113
 114 /* status bar */
 115 int                     bar_enabled = 1;
 116 int                     bar_height = 0;
 117 unsigned long           bar_border = 0x008080;
 118 unsigned long           bar_color = 0x000000;
 119 unsigned long           bar_font_color = 0xa0a0a0;
 120 Window                  bar_window;
 121 GC                      bar_gc;
 122 XGCValues               bar_gcv;
 123 XFontStruct             *bar_fs;
 124 char                    bar_text[128];
 125 char                    *bar_fonts[] = {
 126                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 127                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 128                             NULL
 129 };
 130
 131 /* terminal + args */
 132 char                            *spawn_term[] = { "xterm", NULL };
 133 char                            *spawn_menu[] = { "dmenu_run", NULL };
 134 char                            *spawn_scrotwm[] = { "scrotwm", NULL };
 135
 136 /* layout manager data */
 137 struct swm_geometry {
 138         int                     x;
 139         int                     y;
 140         int                     w;
 141         int                     h;
 142 };
 143
 144
 145 struct ws_win {
 146         TAILQ_ENTRY(ws_win)     entry;
 147         Window                  id;
 148         struct swm_geometry     g;
 149         int                     floating;
 150         int                     transient;
 151         XWindowAttributes       wa;
 152         XSizeHints              sh;
 153 };
 154 TAILQ_HEAD(ws_win_list, ws_win);
 155
 156 /* layout handlers */
 157 void    stack(void);
 158 void    vertical_init(int);
 159 void    vertical_resize(int);
 160 void    vertical_stack(struct swm_geometry *);
 161 void    horizontal_init(int);
 162 void    horizontal_resize(int);
 163 void    horizontal_stack(struct swm_geometry *);
 164 void    max_init(int);
 165 void    max_focus(struct ws_win *);
 166 void    max_stack(struct swm_geometry *);
 167
 168 struct layout {
 169         void                    (*l_init)(int); /* init/reset */
 170         void                    (*l_stack)(struct swm_geometry *);
 171         void                    (*l_resize)(int);
 172         void                    (*l_focus)(struct ws_win *);
 173 } layouts[] =  {
 174         /* init                 stack,                  resize */
 175         { vertical_init,        vertical_stack,         vertical_resize,        NULL},
 176         { horizontal_init,      horizontal_stack,       horizontal_resize,      NULL},
 177         { NULL,                 max_stack,              NULL,                   max_focus},
 178         { NULL,                 NULL,                   NULL,                   NULL},
 179 };
 180
 181
 182 /* define work spaces */
 183 #define SWM_WS_MAX              (10)
 184 struct workspace {
 185         int                     visible;        /* workspace visible */
 186         int                     restack;        /* restack on switch */
 187         struct swm_geometry     g;
 188         struct layout           *cur_layout;    /* current layout handlers */
 189         struct ws_win           *focus;         /* which win has focus */
 190         struct ws_win_list      winlist;        /* list of windows in ws */
 191 } ws[SWM_WS_MAX];
 192 int                     current_ws = 0;
 193
 194 /* args to functions */
 195 union arg {
 196         int                     id;
 197 #define SWM_ARG_ID_FOCUSNEXT    (0)
 198 #define SWM_ARG_ID_FOCUSPREV    (1)
 199 #define SWM_ARG_ID_FOCUSMAIN    (2)
 200 #define SWM_ARG_ID_SWAPNEXT     (3)
 201 #define SWM_ARG_ID_SWAPPREV     (4)
 202 #define SWM_ARG_ID_SWAPMAIN     (5)
 203 #define SWM_ARG_ID_MASTERSHRINK (6)
 204 #define SWM_ARG_ID_MASTERGROW   (7)
 205         char                    **argv;
 206 };
 207
 208 /* conf file stuff */
 209 #define SWM_CONF_WS     "\n= \t"
 210 #define SWM_CONF_FILE   "scrotwm.conf"
 211 int
 212 conf_load(char *filename)
 213 {
 214         FILE                    *config;
 215         char                    *line, *cp, *var, *val;
 216         size_t                   len, lineno = 0;
 217
 218         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 219
 220         if (filename == NULL)
 221                 return (1);
 222
 223         if ((config = fopen(filename, "r")) == NULL)
 224                 return (1);
 225
 226         for (;;) {
 227                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 228                         if (feof(config))
 229                                 break;
 230                 cp = line;
 231                 cp += (long)strspn(cp, SWM_CONF_WS);
 232                 if (cp[0] == '\0') {
 233                         /* empty line */
 234                         free(line);
 235                         continue;
 236                 }
 237                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 238                         break;
 239                 cp += (long)strspn(cp, SWM_CONF_WS);
 240                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 241                         break;
 242
 243                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 244                 switch (var[0]) {
 245                 case 'b':
 246                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 247                                 bar_enabled = atoi(val);
 248                         else if (!strncmp(var, "bar_border",
 249                             strlen("bar_border")))
 250                                 bar_border = strtol(val, NULL, 16);
 251                         else if (!strncmp(var, "bar_color",
 252                             strlen("bar_color")))
 253                                 bar_color = strtol(val, NULL, 16);
 254                         else if (!strncmp(var, "bar_font_color",
 255                             strlen("bar_font_color")))
 256                                 bar_font_color = strtol(val, NULL, 16);
 257                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 258                                 asprintf(&bar_fonts[0], "%s", val);
 259                         else
 260                                 goto bad;
 261                         break;
 262
 263                 case 'c':
 264                         if (!strncmp(var, "color_focus", strlen("color_focus")))
 265                                 color_focus = strtol(val, NULL, 16);
 266                         else if (!strncmp(var, "color_unfocus",
 267                             strlen("color_unfocus")))
 268                                 color_unfocus = strtol(val, NULL, 16);
 269                         else
 270                                 goto bad;
 271                         break;
 272
 273                 case 's':
 274                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 275                                 asprintf(&spawn_term[0], "%s", val); /* XXX args? */
 276                         break;
 277                 default:
 278                         goto bad;
 279                 }
 280                 free(line);
 281         }
 282
 283         fclose(config);
 284         return (0);
 285 bad:
 286         errx(1, "invalid conf file entry: %s=%s", var, val);
 287 }
 288
 289 void
 290 bar_print(void)
 291 {
 292         time_t                  tmt;
 293         struct tm               tm;
 294
 295         if (bar_enabled == 0)
 296                 return;
 297
 298         /* clear old text */
 299         XSetForeground(display, bar_gc, bar_color);
 300         XDrawString(display, bar_window, bar_gc, 4, bar_fs->ascent, bar_text,
 301             strlen(bar_text));
 302
 303         /* draw new text */
 304         time(&tmt);
 305         localtime_r(&tmt, &tm);
 306         strftime(bar_text, sizeof bar_text, "%a %b %d %R %Z %Y", &tm);
 307         XSetForeground(display, bar_gc, bar_font_color);
 308         XDrawString(display, bar_window, bar_gc, 4, bar_fs->ascent, bar_text,
 309             strlen(bar_text));
 310         XSync(display, False);
 311
 312         alarm(60);
 313 }
 314
 315 void
 316 bar_signal(int sig)
 317 {
 318         /* XXX yeah yeah byte me */
 319         bar_print();
 320 }
 321
 322 void
 323 bar_toggle(union arg *args)
 324 {
 325         int i;
 326
 327         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 328
 329         if (bar_enabled) {
 330                 bar_enabled = 0;
 331                 XUnmapWindow(display, bar_window);
 332         } else {
 333                 bar_enabled = 1;
 334                 XMapRaised(display, bar_window);
 335         }
 336         XSync(display, False);
 337         for (i = 0; i < SWM_WS_MAX; i++)
 338                 ws[i].restack = 1;
 339
 340         stack();
 341         bar_print(); /* must be after stack */
 342 }
 343
 344 void
 345 bar_setup(void)
 346 {
 347         int                     i;
 348
 349         for (i = 0; bar_fonts[i] != NULL; i++) {
 350                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 351                 if (bar_fs)
 352                         break;
 353         }
 354         if (bar_fonts[i] == NULL)
 355                         errx(1, "couldn't load font");
 356         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 357
 358         bar_window = XCreateSimpleWindow(display, root, 0, 0,
 359             ws[current_ws].g.w, bar_height - 2, 1, bar_border, bar_color);
 360         bar_gc = XCreateGC(display, bar_window, 0, &bar_gcv);
 361         XSetFont(display, bar_gc, bar_fs->fid);
 362         XSelectInput(display, bar_window, VisibilityChangeMask);
 363         if (bar_enabled) {
 364                 XMapRaised(display, bar_window);
 365         }
 366         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %d\n", (int)bar_window);
 367
 368         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 369                 err(1, "could not install bar_signal");
 370         bar_print();
 371 }
 372
 373 void
 374 config_win(struct ws_win *win)
 375 {
 376         XConfigureEvent         ce;
 377
 378         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 379             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 380         ce.type = ConfigureNotify;
 381         ce.display = display;
 382         ce.event = win->id;
 383         ce.window = win->id;
 384         ce.x = win->g.x;
 385         ce.y = win->g.y;
 386         ce.width = win->g.w;
 387         ce.height = win->g.h;
 388         ce.border_width = 1; /* XXX store this! */
 389         ce.above = None;
 390         ce.override_redirect = False;
 391         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 392 }
 393
 394 int
 395 count_win(int wsid, int count_transient)
 396 {
 397         struct ws_win           *win;
 398         int                     count = 0;
 399
 400         TAILQ_FOREACH (win, &ws[wsid].winlist, entry) {
 401                 if (count_transient == 0 && win->floating)
 402                         continue;
 403                 if (count_transient == 0 && win->transient)
 404                         continue;
 405                 count++;
 406         }
 407         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 408
 409         return (count);
 410 }
 411 void
 412 quit(union arg *args)
 413 {
 414         DNPRINTF(SWM_D_MISC, "quit\n");
 415         running = 0;
 416 }
 417
 418
 419 void
 420 restart(union arg *args)
 421 {
 422         XCloseDisplay(display);
 423         execvp(args->argv[0], args->argv);
 424         fprintf(stderr, "execvp failed\n");
 425         perror(" failed");
 426         quit(NULL);
 427 }
 428
 429 void
 430 spawn(union arg *args)
 431 {
 432         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 433         /*
 434          * The double-fork construct avoids zombie processes and keeps the code
 435          * clean from stupid signal handlers.
 436          */
 437         if(fork() == 0) {
 438                 if(fork() == 0) {
 439                         if(display)
 440                                 close(ConnectionNumber(display));
 441                         setsid();
 442                         execvp(args->argv[0], args->argv);
 443                         fprintf(stderr, "execvp failed\n");
 444                         perror(" failed");
 445                 }
 446                 exit(0);
 447         }
 448         wait(0);
 449 }
 450
 451 void
 452 focus_win(struct ws_win *win)
 453 {
 454         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win->id);
 455         XSetWindowBorder(display, win->id, color_focus);
 456         XSetInputFocus(display, win->id, RevertToPointerRoot, CurrentTime);
 457         ws[current_ws].focus = win;
 458 }
 459
 460 void
 461 unfocus_win(struct ws_win *win)
 462 {
 463         DNPRINTF(SWM_D_FOCUS, "unfocus_win: id: %lu\n", win->id);
 464         XSetWindowBorder(display, win->id, color_unfocus);
 465         if (ws[current_ws].focus == win)
 466                 ws[current_ws].focus = NULL;
 467 }
 468
 469 void
 470 switchws(union arg *args)
 471 {
 472         int                     wsid = args->id;
 473         struct ws_win           *win;
 474
 475         DNPRINTF(SWM_D_WS, "switchws: %d\n", wsid + 1);
 476
 477         if (wsid == current_ws)
 478                 return;
 479
 480         /* map new window first to prevent ugly blinking */
 481         TAILQ_FOREACH (win, &ws[wsid].winlist, entry)
 482                 XMapRaised(display, win->id);
 483         ws[wsid].visible = 1;
 484
 485         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry)
 486                 XUnmapWindow(display, win->id);
 487         ws[current_ws].visible = 0;
 488
 489         current_ws = wsid;
 490
 491         ignore_enter = 1;
 492         if (ws[wsid].restack) {
 493                 stack();
 494                 bar_print();
 495         } else {
 496                 if (ws[wsid].focus != NULL)
 497                         focus_win(ws[wsid].focus);
 498                 XSync(display, False);
 499         }
 500 }
 501
 502 void
 503 swapwin(union arg *args)
 504 {
 505         struct ws_win           *target;
 506
 507         DNPRINTF(SWM_D_MOVE, "swapwin: id %d\n", args->id);
 508         if (ws[current_ws].focus == NULL)
 509                 return;
 510
 511         switch (args->id) {
 512         case SWM_ARG_ID_SWAPPREV:
 513                 target = TAILQ_PREV(ws[current_ws].focus, ws_win_list, entry);
 514                 TAILQ_REMOVE(&ws[current_ws].winlist,
 515                     ws[current_ws].focus, entry);
 516                 if (target == NULL)
 517                         TAILQ_INSERT_TAIL(&ws[current_ws].winlist,
 518                             ws[current_ws].focus, entry);
 519                 else
 520                         TAILQ_INSERT_BEFORE(target, ws[current_ws].focus,
 521                             entry);
 522                 break;
 523         case SWM_ARG_ID_SWAPNEXT:
 524                 target = TAILQ_NEXT(ws[current_ws].focus, entry);
 525                 TAILQ_REMOVE(&ws[current_ws].winlist,
 526                     ws[current_ws].focus, entry);
 527                 if (target == NULL)
 528                         TAILQ_INSERT_HEAD(&ws[current_ws].winlist,
 529                             ws[current_ws].focus, entry);
 530                 else
 531                         TAILQ_INSERT_AFTER(&ws[current_ws].winlist, target,
 532                             ws[current_ws].focus, entry);
 533                 break;
 534         case SWM_ARG_ID_SWAPMAIN:
 535                 target = TAILQ_FIRST(&ws[current_ws].winlist);
 536                 if (target == ws[current_ws].focus)
 537                         return;
 538                 TAILQ_REMOVE(&ws[current_ws].winlist, target, entry);
 539                 TAILQ_INSERT_BEFORE(ws[current_ws].focus, target, entry);
 540                 TAILQ_REMOVE(&ws[current_ws].winlist,
 541                     ws[current_ws].focus, entry);
 542                 TAILQ_INSERT_HEAD(&ws[current_ws].winlist,
 543                     ws[current_ws].focus, entry);
 544                 break;
 545         default:
 546                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
 547                 return;
 548         }
 549
 550         ignore_enter = 2;
 551         stack();
 552 }
 553
 554 void
 555 focus(union arg *args)
 556 {
 557         struct ws_win           *winfocus, *winlostfocus;
 558
 559         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
 560         if (ws[current_ws].focus == NULL)
 561                 return;
 562
 563         winlostfocus = ws[current_ws].focus;
 564
 565         switch (args->id) {
 566         case SWM_ARG_ID_FOCUSPREV:
 567                 winfocus = TAILQ_PREV(ws[current_ws].focus, ws_win_list, entry);
 568                 if (winfocus == NULL)
 569                         winfocus =
 570                             TAILQ_LAST(&ws[current_ws].winlist, ws_win_list);
 571                 break;
 572
 573         case SWM_ARG_ID_FOCUSNEXT:
 574                 winfocus = TAILQ_NEXT(ws[current_ws].focus, entry);
 575                 if (winfocus == NULL)
 576                         winfocus = TAILQ_FIRST(&ws[current_ws].winlist);
 577                 break;
 578
 579         case SWM_ARG_ID_FOCUSMAIN:
 580                 winfocus = TAILQ_FIRST(&ws[current_ws].winlist);
 581                 break;
 582
 583         default:
 584                 return;
 585         }
 586
 587         if (winfocus == winlostfocus)
 588                 return;
 589
 590         unfocus_win(winlostfocus);
 591         focus_win(winfocus);
 592         /* XXX if we hook in focus_win(), we get a nasty cycle */
 593         if (ws[current_ws].cur_layout->l_focus != NULL)
 594                 ws[current_ws].cur_layout->l_focus(winfocus);
 595         XSync(display, False);
 596 }
 597
 598 void
 599 cycle_layout(union arg *args)
 600 {
 601         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", current_ws);
 602
 603         ws[current_ws].cur_layout++;
 604         if (ws[current_ws].cur_layout->l_stack == NULL)
 605                 ws[current_ws].cur_layout = &layouts[0];
 606
 607         stack();
 608 }
 609
 610 void
 611 resize_master(union arg *args)
 612 {
 613         DNPRINTF(SWM_D_EVENT, "resize_master: id %d\n", args->id);
 614
 615         if (ws[current_ws].cur_layout->l_resize != NULL)
 616                 ws[current_ws].cur_layout->l_resize(args->id);
 617 }
 618
 619 void
 620 stack_reset(union arg *args)
 621 {
 622         DNPRINTF(SWM_D_EVENT, "stack_reset: ws %d\n", current_ws);
 623
 624         if (ws[current_ws].cur_layout->l_init != NULL) {
 625                 ws[current_ws].cur_layout->l_init(current_ws);
 626                 stack();
 627         }
 628 }
 629
 630 void
 631 stack(void) {
 632         struct swm_geometry g;
 633         DNPRINTF(SWM_D_EVENT, "stack: workspace: %d\n", current_ws);
 634
 635         /* start with workspace geometry, adjust for bar */
 636         g = ws[current_ws].g;
 637         if (bar_enabled) {
 638                 g.y += bar_height;
 639                 g.h -= bar_height;
 640         }
 641
 642         ws[current_ws].restack = 0;
 643         ws[current_ws].cur_layout->l_stack(&g);
 644         XSync(display, False);
 645 }
 646
 647 void
 648 stack_floater(struct ws_win *win)
 649 {
 650         unsigned int            mask;
 651         XWindowChanges          wc;
 652
 653 #if 0
 654         bzero(&wc, sizeof wc);
 655         wc.border_width = 1;
 656         mask = CWX | CWY | CWBorderWidth;
 657
 658         win->g.w = wc.width = win->wa.width;
 659         win->g.h = wc.height = win->wa.height;
 660         win->g.x = wc.x = (ws[current_ws].g.w - win->wa.width) / 2;
 661         win->g.y = wc.y = (ws[current_ws].g.h - win->wa.height) / 2;
 662
 663         DNPRINTF(SWM_D_EVENT, "stack_floater: win %d x %d y %d w %d h %d\n",
 664             win, wc.x, wc.y, wc.width, wc.height);
 665
 666         XConfigureWindow(display, win->id, mask, &wc);
 667 return;
 668 #endif
 669         bzero(&wc, sizeof wc);
 670         wc.border_width = 1;
 671         mask = CWX | CWY | CWBorderWidth;
 672
 673         /* use obsolete width height */
 674         if (win->sh.flags & USPosition) {
 675                 win->g.w = wc.width = win->sh.width;
 676                 win->g.h = wc.height = win->sh.height;
 677                 mask |= CWWidth | CWHeight;
 678         }
 679
 680         /* try min max */
 681         if (win->sh.flags & PMinSize) {
 682                 /* some hints are retarded */
 683                 if (win->sh.min_width < ws[current_ws].g.w / 10)
 684                         win->sh.min_width = ws[current_ws].g.w / 3;
 685                 if (win->sh.min_height < ws[current_ws].g.h / 10)
 686                         win->sh.height = ws[current_ws].g.h / 3;
 687
 688                 win->g.w = wc.width = win->sh.min_width * 2;
 689                 win->g.h = wc.height = win->sh.min_height * 2;
 690                 mask |= CWWidth | CWHeight;
 691         }
 692         if (win->sh.flags & PMaxSize) {
 693                 /* potentially override min values */
 694                 if (win->sh.max_width < ws[current_ws].g.w) {
 695                         win->g.w = wc.width = win->sh.max_width;
 696                         mask |= CWWidth;
 697                 }
 698                 if (win->sh.max_height < ws[current_ws].g.h) {
 699                         win->g.h = wc.height = win->sh.max_height;
 700                         mask |= CWHeight;
 701                 }
 702         }
 703
 704         /* make sure we don't clobber the screen */
 705         if ((mask & CWWidth) && win->wa.width > ws[current_ws].g.w)
 706                 win->wa.width = ws[current_ws].g.w - 4;
 707         if ((mask & CWHeight) && win->wa.height > ws[current_ws].g.h)
 708                 win->wa.height = ws[current_ws].g.h - 4;
 709
 710         /* supposed to be obsolete */
 711         if (win->sh.flags & USPosition) {
 712                 win->g.x = wc.x = win->sh.x;
 713                 win->g.y = wc.y = win->sh.y;
 714         } else {
 715                 win->g.x = wc.x = (ws[current_ws].g.w - win->wa.width) / 2;
 716                 win->g.y = wc.y = (ws[current_ws].g.h - win->wa.height) / 2;
 717         }
 718         DNPRINTF(SWM_D_EVENT, "stack_floater: win %d x %d y %d w %d h %d\n",
 719             win, wc.x, wc.y, wc.width, wc.height);
 720
 721         XConfigureWindow(display, win->id, mask, &wc);
 722 }
 723
 724
 725 int vertical_msize[SWM_WS_MAX];
 726
 727 void
 728 vertical_init(int ws_idx)
 729 {
 730         DNPRINTF(SWM_D_MISC, "vertical_init: workspace: %d\n", current_ws);
 731
 732         vertical_msize[ws_idx] = ws[ws_idx].g.w / 2;
 733 }
 734
 735 void
 736 vertical_resize(int id)
 737 {
 738         DNPRINTF(SWM_D_MISC, "vertical_resize: workspace: %d\n", current_ws);
 739
 740         switch (id) {
 741         case SWM_ARG_ID_MASTERSHRINK:
 742                 vertical_msize[current_ws] -= ws[current_ws].g.w / 32;
 743                 if ( vertical_msize[current_ws] < ws[current_ws].g.w / 16)
 744                         vertical_msize[current_ws] = ws[current_ws].g.w / 16;
 745                 break;
 746         case SWM_ARG_ID_MASTERGROW:
 747                 vertical_msize[current_ws] += ws[current_ws].g.w / 32;
 748                 if ( vertical_msize[current_ws] >
 749                    (ws[current_ws].g.w - (ws[current_ws].g.w / 16)))
 750                         vertical_msize[current_ws] =
 751                             ws[current_ws].g.w - ws[current_ws].g.w / 16;
 752                 break;
 753         default:
 754                 return;
 755         }
 756         stack();
 757 }
 758
 759 void
 760 vertical_stack(struct swm_geometry *g) {
 761         XWindowChanges          wc;
 762         struct swm_geometry     gg = *g;
 763         struct ws_win           wf, *win, *winfocus = &wf;
 764         int                     i, hrh, winno;
 765         unsigned int            mask;
 766
 767         DNPRINTF(SWM_D_EVENT, "vertical_stack: workspace: %d\n", current_ws);
 768
 769         winfocus->id = root;
 770
 771         winno = count_win(current_ws, 0);
 772         if (winno == 0)
 773                 return;
 774
 775         if (winno > 1)
 776                 gg.w = vertical_msize[current_ws];
 777
 778         if (winno > 2)
 779                 hrh = g->h / (winno - 1);
 780         else
 781                 hrh = 0;
 782
 783         i = 0;
 784         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
 785                 if (i == 1) {
 786                         gg.x += vertical_msize[current_ws] + 2;
 787                         gg.w = g->w - (vertical_msize[current_ws] + 2);
 788                 }
 789                 if (i != 0 && hrh != 0) {
 790                         /* correct the last window for lost pixels */
 791                         if (win == TAILQ_LAST(&ws[current_ws].winlist,
 792                             ws_win_list)) {
 793                                 gg.h = hrh + (g->h - (i * hrh));
 794                                 gg.y += hrh;
 795                         } else {
 796                                 gg.h = hrh - 2;
 797                                 /* leave first right hand window at y = 0 */
 798                                 if (i > 1)
 799                                         gg.y += gg.h + 2;
 800                         }
 801                 }
 802
 803                 if (win->transient != 0 || win->floating != 0)
 804                         stack_floater(win);
 805                 else {
 806                         bzero(&wc, sizeof wc);
 807                         wc.border_width = 1;
 808                         win->g.x = wc.x = gg.x;
 809                         win->g.y = wc.y = gg.y;
 810                         win->g.w = wc.width = gg.w;
 811                         win->g.h = wc.height = gg.h;
 812                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
 813                         XConfigureWindow(display, win->id, mask, &wc);
 814                 }
 815
 816                 if (win == ws[current_ws].focus)
 817                         winfocus = win;
 818                 else
 819                         unfocus_win(win);
 820                 XMapRaised(display, win->id);
 821                 i++;
 822         }
 823
 824         focus_win(winfocus); /* this has to be done outside of the loop */
 825 }
 826
 827 int horizontal_msize[SWM_WS_MAX];
 828
 829 void
 830 horizontal_init(int ws_idx)
 831 {
 832         DNPRINTF(SWM_D_MISC, "horizontal_init: workspace: %d\n", current_ws);
 833
 834         horizontal_msize[ws_idx] = ws[ws_idx].g.h / 2;
 835 }
 836
 837 void
 838 horizontal_resize(int id)
 839 {
 840         DNPRINTF(SWM_D_MISC, "horizontal_resize: workspace: %d\n", current_ws);
 841
 842         switch (id) {
 843         case SWM_ARG_ID_MASTERSHRINK:
 844                 horizontal_msize[current_ws] -= ws[current_ws].g.h / 32;
 845                 if ( horizontal_msize[current_ws] < ws[current_ws].g.h / 16)
 846                         horizontal_msize[current_ws] = ws[current_ws].g.h / 16;
 847                 break;
 848         case SWM_ARG_ID_MASTERGROW:
 849                 horizontal_msize[current_ws] += ws[current_ws].g.h / 32;
 850                 if ( horizontal_msize[current_ws] >
 851                    (ws[current_ws].g.h - (ws[current_ws].g.h / 16)))
 852                         horizontal_msize[current_ws] =
 853                             ws[current_ws].g.h - ws[current_ws].g.h / 16;
 854                 break;
 855         default:
 856                 return;
 857         }
 858         stack();
 859 }
 860
 861 void
 862 horizontal_stack(struct swm_geometry *g) {
 863         XWindowChanges          wc;
 864         struct swm_geometry     gg = *g;
 865         struct ws_win           wf, *win, *winfocus = &wf;
 866         int                     i, hrw, winno;
 867         unsigned int            mask;
 868
 869         DNPRINTF(SWM_D_EVENT, "horizontal_stack: workspace: %d\n", current_ws);
 870
 871         winfocus->id = root;
 872
 873         winno = count_win(current_ws, 0);
 874         if (winno == 0)
 875                 return;
 876
 877         if (winno > 1)
 878                 gg.h = horizontal_msize[current_ws];
 879
 880         if (winno > 2)
 881                 hrw = g->w / (winno - 1);
 882         else
 883                 hrw = 0;
 884
 885         i = 0;
 886         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
 887                 if (i == 1) {
 888                         gg.y += horizontal_msize[current_ws] + 2;
 889                         gg.h = g->h - (horizontal_msize[current_ws] + 2);
 890                 }
 891                 if (i != 0 && hrw != 0) {
 892                         /* correct the last window for lost pixels */
 893                         if (win == TAILQ_LAST(&ws[current_ws].winlist,
 894                             ws_win_list)) {
 895                                 gg.w = hrw + (g->w - (i * hrw));
 896                                 gg.x += hrw;
 897                         } else {
 898                                 gg.w = hrw - 2;
 899                                 /* leave first bottom window at x = 0 */
 900                                 if (i > 1)
 901                                         gg.x += gg.w + 2;
 902                         }
 903                 }
 904
 905                 if (win->transient != 0 || win->floating != 0)
 906                         stack_floater(win);
 907                 else {
 908                         bzero(&wc, sizeof wc);
 909                         wc.border_width = 1;
 910                         win->g.x = wc.x = gg.x;
 911                         win->g.y = wc.y = gg.y;
 912                         win->g.w = wc.width = gg.w;
 913                         win->g.h = wc.height = gg.h;
 914                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
 915                         XConfigureWindow(display, win->id, mask, &wc);
 916                 }
 917
 918                 if (win == ws[current_ws].focus)
 919                         winfocus = win;
 920                 else
 921                         unfocus_win(win);
 922                 XMapRaised(display, win->id);
 923                 i++;
 924         }
 925
 926         focus_win(winfocus); /* this has to be done outside of the loop */
 927 }
 928
 929 void
 930 max_focus(struct ws_win *fwin)
 931 {
 932         struct ws_win *win;
 933
 934         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
 935                 if (win->transient == 0 && win->floating == 0 && win == fwin)
 936                         XMapRaised(display, win->id);
 937                 else
 938                         XUnmapWindow(display, win->id);
 939         }
 940 }
 941
 942 /* fullscreen view */
 943 void
 944 max_stack(struct swm_geometry *g) {
 945         XWindowChanges          wc;
 946         struct swm_geometry     gg = *g;
 947         struct ws_win           *win, *winfocus;
 948         int                     i, found = 0, winno;
 949         unsigned int mask;
 950
 951         DNPRINTF(SWM_D_EVENT, "max_stack: workspace: %d\n", current_ws);
 952
 953         winno = count_win(current_ws, 0);
 954         if (winno == 0)
 955                 return;
 956
 957         winfocus = TAILQ_FIRST(&ws[current_ws].winlist);
 958
 959         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
 960                 if (win->transient != 0 || win->floating != 0) {
 961                         stack_floater(win);
 962                 } else {
 963                         bzero(&wc, sizeof wc);
 964                         wc.border_width = 1;
 965                         win->g.x = wc.x = gg.x;
 966                         win->g.y = wc.y = gg.y;
 967                         win->g.w = wc.width = gg.w;
 968                         win->g.h = wc.height = gg.h;
 969                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
 970                         XConfigureWindow(display, win->id, mask, &wc);
 971
 972                         if (!found) {
 973                                 found = 1;
 974                                 XMapRaised(display, win->id);
 975                         } else {
 976                                 /* hide all but the master window */
 977                                 XUnmapWindow(display, win->id);
 978                         }
 979                 }
 980                 if (win == ws[current_ws].focus)
 981                         winfocus = win;
 982                 else
 983                         unfocus_win(win);
 984                 i++;
 985         }
 986
 987         focus_win(winfocus); /* this has to be done outside of the loop */
 988 }
 989
 990 void
 991 send_to_ws(union arg *args)
 992 {
 993         int                     wsid = args->id;
 994         struct ws_win           *win = ws[current_ws].focus;
 995
 996         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
 997
 998         XUnmapWindow(display, win->id);
 999
1000         /* find a window to focus */
1001         ws[current_ws].focus = TAILQ_PREV(win, ws_win_list, entry);
1002         if (ws[current_ws].focus == NULL)
1003                 ws[current_ws].focus = TAILQ_FIRST(&ws[current_ws].winlist);
1004         if (ws[current_ws].focus == win)
1005                 ws[current_ws].focus = NULL;
1006
1007         TAILQ_REMOVE(&ws[current_ws].winlist, win, entry);
1008
1009         TAILQ_INSERT_TAIL(&ws[wsid].winlist, win, entry);
1010         if (count_win(wsid, 1) == 1)
1011                 ws[wsid].focus = win;
1012         ws[wsid].restack = 1;
1013
1014         stack();
1015 }
1016
1017 /* key definitions */
1018 struct key {
1019         unsigned int            mod;
1020         KeySym                  keysym;
1021         void                    (*func)(union arg *);
1022         union arg               args;
1023 } keys[] = {
1024         /* modifier             key     function                argument */
1025         { MODKEY,               XK_space,       cycle_layout,   {0} },
1026         { MODKEY | ShiftMask,   XK_space,       stack_reset,    {0} },
1027         { MODKEY,               XK_h,           resize_master,  {.id = SWM_ARG_ID_MASTERSHRINK} },
1028         { MODKEY,               XK_l,           resize_master,  {.id = SWM_ARG_ID_MASTERGROW} },
1029         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1030         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1031         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1032         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1033         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1034         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1035         { MODKEY,               XK_p,           spawn,          {.argv = spawn_menu} },
1036         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1037         { MODKEY,               XK_q,           restart,        {.argv = spawn_scrotwm } },
1038         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1039         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1040         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1041         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1042         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1043         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1044         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1045         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1046         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1047         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1048         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1049         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1050         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1051         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1052         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1053         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1054         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1055         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1056         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1057         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1058         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1059         { MODKEY,               XK_b,           bar_toggle,     {0} },
1060         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1061         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1062 };
1063
1064 void
1065 updatenumlockmask(void)
1066 {
1067         unsigned int            i, j;
1068         XModifierKeymap         *modmap;
1069
1070         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1071         numlockmask = 0;
1072         modmap = XGetModifierMapping(display);
1073         for (i = 0; i < 8; i++)
1074                 for (j = 0; j < modmap->max_keypermod; j++)
1075                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1076                           == XKeysymToKeycode(display, XK_Num_Lock))
1077                                 numlockmask = (1 << i);
1078
1079         XFreeModifiermap(modmap);
1080 }
1081
1082 void
1083 grabkeys(void)
1084 {
1085         unsigned int            i, j;
1086         KeyCode                 code;
1087         unsigned int            modifiers[] =
1088             { 0, LockMask, numlockmask, numlockmask | LockMask };
1089
1090         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1091         updatenumlockmask();
1092
1093         XUngrabKey(display, AnyKey, AnyModifier, root);
1094         for(i = 0; i < LENGTH(keys); i++) {
1095                 if((code = XKeysymToKeycode(display, keys[i].keysym)))
1096                         for(j = 0; j < LENGTH(modifiers); j++)
1097                                 XGrabKey(display, code,
1098                                     keys[i].mod | modifiers[j], root,
1099                                     True, GrabModeAsync, GrabModeAsync);
1100         }
1101 }
1102 void
1103 expose(XEvent *e)
1104 {
1105         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1106 }
1107
1108 void
1109 keypress(XEvent *e)
1110 {
1111         unsigned int            i;
1112         KeySym                  keysym;
1113         XKeyEvent               *ev = &e->xkey;
1114
1115         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1116
1117         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1118         for(i = 0; i < LENGTH(keys); i++)
1119                 if(keysym == keys[i].keysym
1120                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1121                    && keys[i].func)
1122                         keys[i].func(&(keys[i].args));
1123 }
1124
1125 void
1126 buttonpress(XEvent *e)
1127 {
1128         XButtonPressedEvent     *ev = &e->xbutton;
1129 #ifdef SWM_CLICKTOFOCUS
1130         struct ws_win           *win;
1131 #endif
1132
1133
1134         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
1135
1136         if (ev->window == root)
1137                 return;
1138         if (ev->window == ws[current_ws].focus->id)
1139                 return;
1140 #ifdef SWM_CLICKTOFOCUS
1141         TAILQ_FOREACH(win, &ws[current_ws].winlist, entry)
1142                 if (win->id == ev->window) {
1143                         /* focus in the clicked window */
1144                         XSetWindowBorder(display, ev->window, 0xff0000);
1145                         XSetWindowBorder(display,
1146                             ws[current_ws].focus->id, 0x888888);
1147                         XSetInputFocus(display, ev->window, RevertToPointerRoot,
1148                             CurrentTime);
1149                         ws[current_ws].focus = win;
1150                         XSync(display, False);
1151                         break;
1152         }
1153 #endif
1154 }
1155
1156 struct ws_win *
1157 manage_window(Window id)
1158 {
1159         Window                  trans;
1160         struct ws_win           *win;
1161         XClassHint              ch;
1162
1163         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
1164                 if (win->id == id)
1165                         return (win);   /* already being managed */
1166         }
1167
1168         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1169                 errx(1, "calloc: failed to allocate memory for new window");
1170
1171         win->id = id;
1172         TAILQ_INSERT_TAIL(&ws[current_ws].winlist, win, entry);
1173         ws[current_ws].focus = win; /* make new win focused */
1174
1175         XGetTransientForHint(display, win->id, &trans);
1176         if (trans) {
1177                 win->transient = trans;
1178                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
1179                     (unsigned)win->id, win->transient);
1180         }
1181         XGetWindowAttributes(display, win->id, &win->wa);
1182         XGetNormalHints(display, win->id, &win->sh);
1183
1184         /* XXX */
1185         bzero(&ch, sizeof ch);
1186         if(XGetClassHint(display, win->id, &ch)) {
1187                 /*fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name); */
1188                 if (!strcmp(ch.res_class, "MPlayer") && !strcmp(ch.res_name, "xv")) {
1189                         win->floating = 1;
1190                 }
1191                 if(ch.res_class)
1192                         XFree(ch.res_class);
1193                 if(ch.res_name)
1194                         XFree(ch.res_name);
1195         }
1196
1197         XSelectInput(display, id, ButtonPressMask | EnterWindowMask |
1198             FocusChangeMask | ExposureMask);
1199
1200         return (win);
1201 }
1202
1203 void
1204 configurerequest(XEvent *e)
1205 {
1206         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1207         struct ws_win           *win;
1208         int                     new = 1;
1209         XWindowChanges          wc;
1210
1211         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
1212                 if (win->id == ev->window) {
1213                         new = 0;
1214                         break;
1215                 }
1216         }
1217
1218         if (new) {
1219                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
1220                     ev->window);
1221                 bzero(&wc, sizeof wc);
1222                 wc.x = ev->x;
1223                 wc.y = ev->y;
1224                 wc.width = ev->width;
1225                 wc.height = ev->height;
1226                 wc.border_width = ev->border_width;
1227                 wc.sibling = ev->above;
1228                 wc.stack_mode = ev->detail;
1229                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
1230         } else {
1231                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
1232                     ev->window);
1233                 config_win(win);
1234         }
1235 }
1236
1237 void
1238 configurenotify(XEvent *e)
1239 {
1240         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1241             e->xconfigure.window);
1242 }
1243
1244 void
1245 destroynotify(XEvent *e)
1246 {
1247         struct ws_win           *win;
1248         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1249
1250         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1251
1252         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
1253                 if (ev->window == win->id) {
1254                         /* find a window to focus */
1255                         ws[current_ws].focus = TAILQ_PREV(win,
1256                             ws_win_list, entry);
1257                         if (ws[current_ws].focus == NULL)
1258                                 ws[current_ws].focus =
1259                                     TAILQ_FIRST(&ws[current_ws].winlist);
1260                         if (win == ws[current_ws].focus)
1261                                 ws[current_ws].focus = NULL;
1262
1263                         TAILQ_REMOVE(&ws[current_ws].winlist, win, entry);
1264                         free(win);
1265                         break;
1266                 }
1267         }
1268
1269         stack();
1270 }
1271
1272 void
1273 enternotify(XEvent *e)
1274 {
1275         XCrossingEvent          *ev = &e->xcrossing;
1276         struct ws_win           *win;
1277
1278         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1279
1280         if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) &&
1281             ev->window != root)
1282                 return;
1283         if (ignore_enter) {
1284                 /* eat event(s) to prevent autofocus */
1285                 ignore_enter--;
1286                 return;
1287         }
1288         TAILQ_FOREACH (win, &ws[current_ws].winlist, entry) {
1289                 if (win->id == ev->window)
1290                         focus_win(win);
1291                 else
1292                         unfocus_win(win);
1293         }
1294 }
1295
1296 void
1297 focusin(XEvent *e)
1298 {
1299         XFocusChangeEvent       *ev = &e->xfocus;
1300
1301         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", ev->window);
1302
1303         if (ev->window == root)
1304                 return;
1305         /*
1306          * kill grab for now so that we can cut and paste , this screws up
1307          * click to focus
1308          */
1309         /*
1310         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu grabbing\n", ev->window);
1311         XGrabButton(display, Button1, AnyModifier, ev->window, False,
1312             ButtonPress, GrabModeAsync, GrabModeSync, None, None);
1313         */
1314 }
1315
1316 void
1317 mappingnotify(XEvent *e)
1318 {
1319         XMappingEvent           *ev = &e->xmapping;
1320
1321         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1322
1323         XRefreshKeyboardMapping(ev);
1324         if(ev->request == MappingKeyboard)
1325                 grabkeys();
1326 }
1327
1328 void
1329 maprequest(XEvent *e)
1330 {
1331         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1332             e->xmaprequest.window);
1333
1334         manage_window(e->xmaprequest.window);
1335         stack();
1336 }
1337
1338 void
1339 propertynotify(XEvent *e)
1340 {
1341         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
1342             e->xproperty.window);
1343 }
1344
1345 void
1346 unmapnotify(XEvent *e)
1347 {
1348         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
1349 }
1350
1351 void
1352 visibilitynotify(XEvent *e)
1353 {
1354         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n", e->xvisibility.window);
1355
1356         if (e->xvisibility.window == bar_window &&
1357             e->xvisibility.state == VisibilityUnobscured)
1358                 bar_print();
1359 }
1360
1361 void                    (*handler[LASTEvent])(XEvent *) = {
1362                                 [Expose] = expose,
1363                                 [KeyPress] = keypress,
1364                                 [ButtonPress] = buttonpress,
1365                                 [ConfigureRequest] = configurerequest,
1366                                 [ConfigureNotify] = configurenotify,
1367                                 [DestroyNotify] = destroynotify,
1368                                 [EnterNotify] = enternotify,
1369                                 [FocusIn] = focusin,
1370                                 [MappingNotify] = mappingnotify,
1371                                 [MapRequest] = maprequest,
1372                                 [PropertyNotify] = propertynotify,
1373                                 [UnmapNotify] = unmapnotify,
1374                                 [VisibilityNotify] = visibilitynotify,
1375 };
1376
1377 int
1378 xerror_start(Display *d, XErrorEvent *ee)
1379 {
1380         other_wm = 1;
1381         return (-1);
1382 }
1383
1384 int
1385 xerror(Display *d, XErrorEvent *ee)
1386 {
1387         fprintf(stderr, "error: %p %p\n", display, ee);
1388
1389         return (-1);
1390 }
1391
1392 int
1393 active_wm(void)
1394 {
1395         other_wm = 0;
1396         xerrorxlib = XSetErrorHandler(xerror_start);
1397
1398         /* this causes an error if some other window manager is running */
1399         XSelectInput(display, DefaultRootWindow(display),
1400             SubstructureRedirectMask);
1401         XSync(display, False);
1402         if(other_wm)
1403                 return (1);
1404
1405         XSetErrorHandler(xerror);
1406         XSync(display, False);
1407         return (0);
1408 }
1409
1410 int
1411 main(int argc, char *argv[])
1412 {
1413         struct passwd           *pwd;
1414         char                    conf[PATH_MAX], *cfile = NULL;
1415         struct stat             sb;
1416         XEvent                  e;
1417         unsigned int            i, j, num;
1418         Window                  d1, d2, *wins = NULL;
1419         XWindowAttributes       wa;
1420
1421         fprintf(stderr, "Welcome to scrotwm V%s\n", SWM_VERSION);
1422         if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
1423                 warnx("no locale support");
1424
1425         if(!(display = XOpenDisplay(0)))
1426                 errx(1, "can not open display");
1427
1428         if (active_wm())
1429                 errx(1, "other wm running");
1430
1431         screen = DefaultScreen(display);
1432         root = RootWindow(display, screen);
1433
1434         /* look for local and global conf file */
1435         pwd = getpwuid(getuid());
1436         if (pwd == NULL)
1437                 errx(1, "invalid user %d", getuid());
1438
1439         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
1440         if (stat(conf, &sb) != -1) {
1441                 if (S_ISREG(sb.st_mode))
1442                         cfile = conf;
1443         } else {
1444                 /* try global conf file */
1445                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
1446                 if (!stat(conf, &sb))
1447                         if (S_ISREG(sb.st_mode))
1448                                 cfile = conf;
1449         }
1450         if (cfile)
1451                 conf_load(cfile);
1452
1453         /* init all workspaces */
1454         for (i = 0; i < SWM_WS_MAX; i++) {
1455                 ws[i].visible = 0;
1456                 ws[i].restack = 1;
1457                 ws[i].focus = NULL;
1458                 ws[i].g.x = 0;
1459                 ws[i].g.y = 0;
1460                 ws[i].g.w = DisplayWidth(display, screen) - 2;
1461                 ws[i].g.h = DisplayHeight(display, screen) - 2;
1462                 TAILQ_INIT(&ws[i].winlist);
1463
1464                 for (j = 0; layouts[j].l_stack != NULL; j++) {
1465                         if (layouts[j].l_init != NULL)
1466                                 layouts[j].l_init(i);
1467                 }
1468                 ws[i].cur_layout = &layouts[0];
1469         }
1470         /* make work space 1 active */
1471         ws[0].visible = 1;
1472
1473         /* grab existing windows */
1474         if (XQueryTree(display, root, &d1, &d2, &wins, &num)) {
1475                 for (i = 0; i < num; i++) {
1476                         if (!XGetWindowAttributes(display, wins[i], &wa)
1477                             || wa.override_redirect ||
1478                             XGetTransientForHint(display, wins[i], &d1))
1479                                 continue;
1480                         manage_window(wins[i]);
1481                 }
1482                 if(wins)
1483                         XFree(wins);
1484         }
1485         ws[0].focus = TAILQ_FIRST(&ws[0].winlist);
1486
1487         /* setup status bar */
1488         bar_setup();
1489
1490         XSelectInput(display, root, SubstructureRedirectMask |
1491             SubstructureNotifyMask | ButtonPressMask | KeyPressMask |
1492             EnterWindowMask | LeaveWindowMask | StructureNotifyMask |
1493             FocusChangeMask | PropertyChangeMask | ExposureMask);
1494
1495         grabkeys();
1496         stack();
1497
1498         while (running) {
1499                 XNextEvent(display, &e);
1500                 if (handler[e.type])
1501                         handler[e.type](&e);
1502         }
1503
1504         XCloseDisplay(display);
1505
1506         return (0);
1507 }