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 static const char       *cvstag = "$scrotwm$";
  52
  53 #define SWM_VERSION     "0.6"
  54
  55 #include <stdio.h>
  56 #include <stdlib.h>
  57 #include <err.h>
  58 #include <errno.h>
  59 #include <fcntl.h>
  60 #include <locale.h>
  61 #include <unistd.h>
  62 #include <time.h>
  63 #include <signal.h>
  64 #include <string.h>
  65 #include <util.h>
  66 #include <pwd.h>
  67 #include <ctype.h>
  68
  69 #include <sys/types.h>
  70 #include <sys/time.h>
  71 #include <sys/stat.h>
  72 #include <sys/wait.h>
  73 #include <sys/queue.h>
  74 #include <sys/param.h>
  75 #include <sys/select.h>
  76
  77 #include <X11/cursorfont.h>
  78 #include <X11/keysym.h>
  79 #include <X11/Xatom.h>
  80 #include <X11/Xlib.h>
  81 #include <X11/Xproto.h>
  82 #include <X11/Xutil.h>
  83 #include <X11/extensions/Xrandr.h>
  84
  85 #if RANDR_MAJOR < 1
  86 #  error XRandR versions less than 1.0 are not supported
  87 #endif
  88
  89 #if RANDR_MAJOR >= 1
  90 #if RANDR_MINOR >= 2
  91 #define SWM_XRR_HAS_CRTC
  92 #endif
  93 #endif
  94
  95 /* #define SWM_DEBUG */
  96 #ifdef SWM_DEBUG
  97 #define DPRINTF(x...)           do { if (swm_debug) fprintf(stderr, x); } while(0)
  98 #define DNPRINTF(n,x...)        do { if (swm_debug & n) fprintf(stderr, x); } while(0)
  99 #define SWM_D_MISC              0x0001
 100 #define SWM_D_EVENT             0x0002
 101 #define SWM_D_WS                0x0004
 102 #define SWM_D_FOCUS             0x0008
 103 #define SWM_D_MOVE              0x0010
 104 #define SWM_D_STACK             0x0020
 105 #define SWM_D_MOUSE             0x0040
 106 #define SWM_D_PROP              0x0080
 107
 108 u_int32_t               swm_debug = 0
 109                             | SWM_D_MISC
 110                             | SWM_D_EVENT
 111                             | SWM_D_WS
 112                             | SWM_D_FOCUS
 113                             | SWM_D_MOVE
 114                             | SWM_D_STACK
 115                             | SWM_D_MOUSE
 116                             | SWM_D_PROP
 117                             ;
 118 #else
 119 #define DPRINTF(x...)
 120 #define DNPRINTF(n,x...)
 121 #endif
 122
 123 #define LENGTH(x)               (sizeof x / sizeof x[0])
 124 #define MODKEY                  Mod1Mask
 125 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
 126 #define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
 127 #define SWM_PROPLEN             (16)
 128 #define X(r)                    (r)->g.x
 129 #define Y(r)                    (r)->g.y
 130 #define WIDTH(r)                (r)->g.w
 131 #define HEIGHT(r)               (r)->g.h
 132
 133 #ifndef SWM_LIB
 134 #define SWM_LIB                 "/usr/X11R6/lib/swmhack.so"
 135 #endif
 136
 137 char                    **start_argv;
 138 Atom                    astate;
 139 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 140 int                     other_wm;
 141 int                     running = 1;
 142 int                     ss_enabled = 0;
 143 int                     xrandr_eventbase;
 144 int                     ignore_enter = 0;
 145 unsigned int            numlockmask = 0;
 146 Display                 *display;
 147
 148 int                     cycle_empty = 0;
 149 int                     cycle_visible = 0;
 150
 151 /* dialog windows */
 152 double                  dialog_ratio = .6;
 153 /* status bar */
 154 #define SWM_BAR_MAX     (128)
 155 char                    *bar_argv[] = { NULL, NULL };
 156 int                     bar_pipe[2];
 157 char                    bar_ext[SWM_BAR_MAX];
 158 sig_atomic_t            bar_alarm = 0;
 159 int                     bar_delay = 30;
 160 int                     bar_enabled = 1;
 161 int                     bar_extra = 1;
 162 int                     bar_extra_running = 0;
 163 int                     bar_verbose = 1;
 164 int                     bar_height = 0;
 165 pid_t                   bar_pid;
 166 GC                      bar_gc;
 167 XGCValues               bar_gcv;
 168 int                     bar_fidx = 0;
 169 XFontStruct             *bar_fs;
 170 char                    *bar_fonts[] = {
 171                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 172                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 173                             NULL
 174 };
 175
 176 /* terminal + args */
 177 char                    *spawn_term[] = { "xterm", NULL };
 178 char                    *spawn_screenshot[] = { "screenshot.sh", NULL, NULL };
 179 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL, "-nb", NULL,
 180                             "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 181
 182 #define SWM_MENU_FN     (2)
 183 #define SWM_MENU_NB     (4)
 184 #define SWM_MENU_NF     (6)
 185 #define SWM_MENU_SB     (8)
 186 #define SWM_MENU_SF     (10)
 187
 188 /* layout manager data */
 189 struct swm_geometry {
 190         int                     x;
 191         int                     y;
 192         int                     w;
 193         int                     h;
 194 };
 195
 196 struct swm_screen;
 197 struct workspace;
 198
 199 /* virtual "screens" */
 200 struct swm_region {
 201         TAILQ_ENTRY(swm_region) entry;
 202         struct swm_geometry     g;
 203         Window                  bar_window;
 204         struct workspace        *ws;    /* current workspace on this region */
 205         struct swm_screen       *s;     /* screen idx */
 206 };
 207 TAILQ_HEAD(swm_region_list, swm_region);
 208
 209 struct ws_win {
 210         TAILQ_ENTRY(ws_win)     entry;
 211         Window                  id;
 212         struct swm_geometry     g;
 213         int                     got_focus;
 214         int                     floating;
 215         int                     transient;
 216         struct workspace        *ws;    /* always valid */
 217         struct swm_screen       *s;     /* always valid, never changes */
 218         XWindowAttributes       wa;
 219         XSizeHints              sh;
 220 };
 221 TAILQ_HEAD(ws_win_list, ws_win);
 222
 223 /* layout handlers */
 224 void    stack(void);
 225 void    vertical_config(struct workspace *, int);
 226 void    vertical_stack(struct workspace *, struct swm_geometry *);
 227 void    horizontal_config(struct workspace *, int);
 228 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 229 void    max_stack(struct workspace *, struct swm_geometry *);
 230
 231 void    grabbuttons(struct ws_win *, int);
 232
 233 struct layout {
 234         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 235         void            (*l_config)(struct workspace *, int);
 236 } layouts[] =  {
 237         /* stack,               configure */
 238         { vertical_stack,       vertical_config},
 239         { horizontal_stack,     horizontal_config},
 240         { max_stack,            NULL},
 241         { NULL,                 NULL},
 242 };
 243
 244 #define SWM_H_SLICE             (32)
 245 #define SWM_V_SLICE             (32)
 246
 247 /* define work spaces */
 248 struct workspace {
 249         int                     idx;            /* workspace index */
 250         int                     restack;        /* restack on switch */
 251         struct layout           *cur_layout;    /* current layout handlers */
 252         struct ws_win           *focus;         /* may be NULL */
 253         struct swm_region       *r;             /* may be NULL */
 254         struct ws_win_list      winlist;        /* list of windows in ws */
 255
 256         /* stacker state */
 257         struct {
 258                                 int horizontal_msize;
 259                                 int horizontal_mwin;
 260                                 int vertical_msize;
 261                                 int vertical_mwin;
 262         } l_state;
 263 };
 264
 265 enum    { SWM_S_COLOR_BAR, SWM_S_COLOR_BAR_BORDER, SWM_S_COLOR_BAR_FONT,
 266           SWM_S_COLOR_FOCUS, SWM_S_COLOR_UNFOCUS, SWM_S_COLOR_MAX };
 267
 268 /* physical screen mapping */
 269 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 270 struct swm_screen {
 271         int                     idx;            /* screen index */
 272         struct swm_region_list  rl;     /* list of regions on this screen */
 273         Window                  root;
 274         int                     xrandr_support;
 275         struct workspace        ws[SWM_WS_MAX];
 276
 277         /* colors */
 278         struct {
 279                 unsigned long   color;
 280                 char            *name;
 281         } c[SWM_S_COLOR_MAX];
 282 };
 283 struct swm_screen       *screens;
 284 int                     num_screens;
 285
 286 struct ws_win           *cur_focus = NULL;
 287
 288 /* args to functions */
 289 union arg {
 290         int                     id;
 291 #define SWM_ARG_ID_FOCUSNEXT    (0)
 292 #define SWM_ARG_ID_FOCUSPREV    (1)
 293 #define SWM_ARG_ID_FOCUSMAIN    (2)
 294 #define SWM_ARG_ID_SWAPNEXT     (3)
 295 #define SWM_ARG_ID_SWAPPREV     (4)
 296 #define SWM_ARG_ID_SWAPMAIN     (5)
 297 #define SWM_ARG_ID_MASTERSHRINK (6)
 298 #define SWM_ARG_ID_MASTERGROW   (7)
 299 #define SWM_ARG_ID_MASTERADD    (8)
 300 #define SWM_ARG_ID_MASTERDEL    (9)
 301 #define SWM_ARG_ID_STACKRESET   (10)
 302 #define SWM_ARG_ID_STACKINIT    (11)
 303 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 304 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 305 #define SWM_ARG_ID_CYCLESC_UP   (14)
 306 #define SWM_ARG_ID_CYCLESC_DOWN (15)
 307 #define SWM_ARG_ID_SS_ALL       (0)
 308 #define SWM_ARG_ID_SS_WINDOW    (1)
 309         char                    **argv;
 310 };
 311
 312 unsigned long
 313 name_to_color(char *colorname)
 314 {
 315         Colormap                cmap;
 316         Status                  status;
 317         XColor                  screen_def, exact_def;
 318         unsigned long           result = 0;
 319         char                    cname[32] = "#";
 320
 321         cmap = DefaultColormap(display, screens[0].idx);
 322         status = XAllocNamedColor(display, cmap, colorname,
 323             &screen_def, &exact_def);
 324         if (!status) {
 325                 strlcat(cname, colorname + 2, sizeof cname - 1);
 326                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 327                     &exact_def);
 328         }
 329         if (status)
 330                 result = screen_def.pixel;
 331         else
 332                 fprintf(stderr, "color '%s' not found.\n", colorname);
 333
 334         return (result);
 335 }
 336
 337 void
 338 setscreencolor(char *val, int i, int c)
 339 {
 340         if (i > 0 && i <= ScreenCount(display)) {
 341                 screens[i - 1].c[c].color = name_to_color(val);
 342                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 343                         errx(1, "strdup");
 344         } else if (i == -1) {
 345                 for (i = 0; i < ScreenCount(display); i++)
 346                         screens[i].c[c].color = name_to_color(val);
 347                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 348                                 errx(1, "strdup");
 349         } else
 350                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 351                     i, ScreenCount(display));
 352 }
 353
 354 int
 355 varmatch(char *var, char *name, int *index)
 356 {
 357         char                    *p, buf[5];
 358         int                     i;
 359
 360         i = strncmp(var, name, 255);
 361         if (index == NULL)
 362                 return (i);
 363
 364         *index = -1;
 365         if (i <= 0)
 366                 return (i);
 367         p = var + strlen(name);
 368         if (*p++ != '[')
 369                 return (i);
 370         bzero(buf, sizeof buf);
 371         i = 0;
 372         while (isdigit(*p) && i < sizeof buf)
 373                 buf[i++] = *p++;
 374         if (i == 0 || i >= sizeof buf || *p != ']')
 375                 return (1);
 376         *index = strtonum(buf, 0, 99, NULL);
 377         return (0);
 378 }
 379
 380 /* conf file stuff */
 381 #define SWM_CONF_WS     "\n= \t"
 382 #define SWM_CONF_FILE   "scrotwm.conf"
 383 int
 384 conf_load(char *filename)
 385 {
 386         FILE                    *config;
 387         char                    *line, *cp, *var, *val;
 388         size_t                  len, lineno = 0;
 389         int                     i, sc;
 390
 391         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 392
 393         if (filename == NULL)
 394                 return (1);
 395
 396         if ((config = fopen(filename, "r")) == NULL)
 397                 return (1);
 398
 399         for (sc = ScreenCount(display);;) {
 400                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 401                         if (feof(config))
 402                                 break;
 403                 cp = line;
 404                 cp += (long)strspn(cp, SWM_CONF_WS);
 405                 if (cp[0] == '\0') {
 406                         /* empty line */
 407                         free(line);
 408                         continue;
 409                 }
 410                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 411                         break;
 412                 cp += (long)strspn(cp, SWM_CONF_WS);
 413                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 414                         break;
 415
 416                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 417                 switch (var[0]) {
 418                 case 'b':
 419                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 420                                 bar_enabled = atoi(val);
 421                         else if (!varmatch(var, "bar_border", &i))
 422                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 423                         else if (!varmatch(var, "bar_color", &i))
 424                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 425                         else if (!varmatch(var, "bar_font_color", &i))
 426                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 427                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 428                                 asprintf(&bar_fonts[0], "%s", val);
 429                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 430                                 asprintf(&bar_argv[0], "%s", val);
 431                         else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 432                                 bar_delay = atoi(val);
 433                         else
 434                                 goto bad;
 435                         break;
 436
 437                 case 'c':
 438                         if (!varmatch(var, "color_focus", &i))
 439                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 440                         else if (!varmatch(var, "color_unfocus", &i))
 441                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 442                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 443                                 cycle_visible = atoi(val);
 444                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 445                                 cycle_visible = atoi(val);
 446                         else
 447                                 goto bad;
 448                         break;
 449
 450                 case 'd':
 451                         if (!strncmp(var, "dialog_ratio",
 452                             strlen("dialog_ratio"))) {
 453                                 dialog_ratio = atof(val);
 454                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 455                                         dialog_ratio = .6;
 456                         } else
 457                                 goto bad;
 458                         break;
 459
 460                 case 's':
 461                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 462                                 asprintf(&spawn_term[0], "%s", val);
 463                         if (!strncmp(var, "screenshot_enabled",
 464                             strlen("screenshot_enabled")))
 465                                 ss_enabled = atoi(val);
 466                         if (!strncmp(var, "screenshot_app",
 467                             strlen("screenshot_app")))
 468                                 asprintf(&spawn_screenshot[0], "%s", val);
 469                         break;
 470                 default:
 471                         goto bad;
 472                 }
 473                 free(line);
 474         }
 475
 476         fclose(config);
 477         return (0);
 478
 479 bad:
 480         errx(1, "invalid conf file entry: %s=%s", var, val);
 481 }
 482
 483 void
 484 socket_setnonblock(int fd)
 485 {
 486         int                     flags;
 487
 488         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 489                 err(1, "fcntl F_GETFL");
 490         flags |= O_NONBLOCK;
 491         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 492                 err(1, "fcntl F_SETFL");
 493 }
 494
 495 void
 496 bar_print(struct swm_region *r, char *s)
 497 {
 498         XClearWindow(display, r->bar_window);
 499         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 500         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 501             strlen(s));
 502 }
 503
 504 void
 505 bar_extra_stop(void)
 506 {
 507         if (bar_pipe[0]) {
 508                 close(bar_pipe[0]);
 509                 bzero(bar_pipe, sizeof bar_pipe);
 510         }
 511         if (bar_pid) {
 512                 kill(bar_pid, SIGTERM);
 513                 bar_pid = 0;
 514         }
 515         strlcpy(bar_ext, "", sizeof bar_ext);
 516         bar_extra = 0;
 517 }
 518
 519 void
 520 bar_update(void)
 521 {
 522         time_t                  tmt;
 523         struct tm               tm;
 524         struct swm_region       *r;
 525         int                     i, x;
 526         size_t                  len;
 527         char                    s[SWM_BAR_MAX];
 528         char                    loc[SWM_BAR_MAX];
 529         char                    *b;
 530
 531         if (bar_enabled == 0)
 532                 return;
 533
 534         if (bar_extra && bar_extra_running) {
 535                 /* ignore short reads; it'll correct itself */
 536                 while ((b = fgetln(stdin, &len)) != NULL)
 537                         if (b && b[len - 1] == '\n') {
 538                                 b[len - 1] = '\0';
 539                                 strlcpy(bar_ext, b, sizeof bar_ext);
 540                         }
 541                 if (b == NULL && errno != EAGAIN) {
 542                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 543                             errno, strerror(errno));
 544                         bar_extra_stop();
 545                 }
 546         } else
 547                 strlcpy(bar_ext, "", sizeof bar_ext);
 548
 549         time(&tmt);
 550         localtime_r(&tmt, &tm);
 551         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 552         for (i = 0; i < ScreenCount(display); i++) {
 553                 x = 1;
 554                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 555                         snprintf(loc, sizeof loc, "%s     %d:%d    %s",
 556                             s, x++, r->ws->idx + 1, bar_ext);
 557                         bar_print(r, loc);
 558                 }
 559         }
 560         XSync(display, False);
 561         alarm(bar_delay);
 562 }
 563
 564 void
 565 bar_signal(int sig)
 566 {
 567         bar_alarm = 1;
 568 }
 569
 570 void
 571 bar_toggle(struct swm_region *r, union arg *args)
 572 {
 573         struct swm_region       *tmpr;
 574         int                     i, j, sc = ScreenCount(display);
 575
 576         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 577
 578         if (bar_enabled) {
 579                 for (i = 0; i < sc; i++)
 580                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 581                                 XUnmapWindow(display, tmpr->bar_window);
 582         } else {
 583                 for (i = 0; i < sc; i++)
 584                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 585                                 XMapRaised(display, tmpr->bar_window);
 586         }
 587         bar_enabled = !bar_enabled;
 588         XSync(display, False);
 589         for (i = 0; i < sc; i++)
 590                 for (j = 0; j < SWM_WS_MAX; j++)
 591                         screens[i].ws[j].restack = 1;
 592
 593         stack();
 594         /* must be after stack */
 595         for (i = 0; i < sc; i++)
 596                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 597                         bar_update();
 598 }
 599
 600 void
 601 bar_refresh(void)
 602 {
 603         XSetWindowAttributes    wa;
 604         struct swm_region       *r;
 605         int                     i;
 606
 607         /* do this here because the conf file is in memory */
 608         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 609                 /* launch external status app */
 610                 bar_extra_running = 1;
 611                 if (pipe(bar_pipe) == -1)
 612                         err(1, "pipe error");
 613                 socket_setnonblock(bar_pipe[0]);
 614                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 615                 if (dup2(bar_pipe[0], 0) == -1)
 616                         errx(1, "dup2");
 617                 if (dup2(bar_pipe[1], 1) == -1)
 618                         errx(1, "dup2");
 619                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 620                         err(1, "could not disable SIGPIPE");
 621                 switch (bar_pid = fork()) {
 622                 case -1:
 623                         err(1, "cannot fork");
 624                         break;
 625                 case 0: /* child */
 626                         close(bar_pipe[0]);
 627                         execvp(bar_argv[0], bar_argv);
 628                         err(1, "%s external app failed", bar_argv[0]);
 629                         break;
 630                 default: /* parent */
 631                         close(bar_pipe[1]);
 632                         break;
 633                 }
 634         }
 635
 636         bzero(&wa, sizeof wa);
 637         for (i = 0; i < ScreenCount(display); i++)
 638                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 639                         wa.border_pixel =
 640                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 641                         wa.background_pixel =
 642                             screens[i].c[SWM_S_COLOR_BAR].color;
 643                         XChangeWindowAttributes(display, r->bar_window,
 644                             CWBackPixel | CWBorderPixel, &wa);
 645                 }
 646         bar_update();
 647 }
 648
 649 void
 650 bar_setup(struct swm_region *r)
 651 {
 652         int                     i;
 653
 654         for (i = 0; bar_fonts[i] != NULL; i++) {
 655                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 656                 if (bar_fs) {
 657                         bar_fidx = i;
 658                         break;
 659                 }
 660         }
 661         if (bar_fonts[i] == NULL)
 662                         errx(1, "couldn't load font");
 663         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 664
 665         r->bar_window = XCreateSimpleWindow(display,
 666             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 667             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 668             r->s->c[SWM_S_COLOR_BAR].color);
 669         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 670         XSetFont(display, bar_gc, bar_fs->fid);
 671         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 672         if (bar_enabled)
 673                 XMapRaised(display, r->bar_window);
 674         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 675
 676         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 677                 err(1, "could not install bar_signal");
 678         bar_refresh();
 679 }
 680
 681 void
 682 config_win(struct ws_win *win)
 683 {
 684         XConfigureEvent         ce;
 685
 686         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 687             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 688         ce.type = ConfigureNotify;
 689         ce.display = display;
 690         ce.event = win->id;
 691         ce.window = win->id;
 692         ce.x = win->g.x;
 693         ce.y = win->g.y;
 694         ce.width = win->g.w;
 695         ce.height = win->g.h;
 696         ce.border_width = 1; /* XXX store this! */
 697         ce.above = None;
 698         ce.override_redirect = False;
 699         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 700 }
 701
 702 int
 703 count_win(struct workspace *ws, int count_transient)
 704 {
 705         struct ws_win           *win;
 706         int                     count = 0;
 707
 708         TAILQ_FOREACH(win, &ws->winlist, entry) {
 709                 if (count_transient == 0 && win->floating)
 710                         continue;
 711                 if (count_transient == 0 && win->transient)
 712                         continue;
 713                 count++;
 714         }
 715         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 716
 717         return (count);
 718 }
 719
 720 void
 721 quit(struct swm_region *r, union arg *args)
 722 {
 723         DNPRINTF(SWM_D_MISC, "quit\n");
 724         running = 0;
 725 }
 726
 727 void
 728 unmap_all(void)
 729 {
 730         struct ws_win           *win;
 731         int                     i, j;
 732
 733         for (i = 0; i < ScreenCount(display); i++)
 734                 for (j = 0; j < SWM_WS_MAX; j++)
 735                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 736                                 XUnmapWindow(display, win->id);
 737 }
 738
 739 void
 740 restart(struct swm_region *r, union arg *args)
 741 {
 742         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 743
 744         /* disable alarm because the following code may not be interrupted */
 745         alarm(0);
 746         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 747                 errx(1, "can't disable alarm");
 748
 749         bar_extra_stop();
 750         bar_extra = 1;
 751         unmap_all();
 752         XCloseDisplay(display);
 753         execvp(start_argv[0], start_argv);
 754         fprintf(stderr, "execvp failed\n");
 755         perror(" failed");
 756         quit(NULL, NULL);
 757 }
 758
 759 struct swm_region *
 760 root_to_region(Window root)
 761 {
 762         struct swm_region       *r;
 763         Window                  rr, cr;
 764         int                     i, x, y, wx, wy;
 765         unsigned int            mask;
 766
 767         for (i = 0; i < ScreenCount(display); i++)
 768                 if (screens[i].root == root)
 769                         break;
 770
 771         if (XQueryPointer(display, screens[i].root,
 772             &rr, &cr, &x, &y, &wx, &wy, &mask) == False) {
 773                 /* if we can't query the pointer, grab the first region */
 774                 r = TAILQ_FIRST(&screens[i].rl);
 775         } else {
 776                 /* otherwise, choose a region based on pointer location */
 777                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 778                         if (x >= X(r) && x <= X(r) + WIDTH(r) &&
 779                             y >= Y(r) && y <= Y(r) + HEIGHT(r))
 780                                 break;
 781                 }
 782
 783                 if (r == NULL)
 784                         r = TAILQ_FIRST(&screens[i].rl);
 785         }
 786         return (r);
 787 }
 788
 789 struct ws_win *
 790 find_window(Window id)
 791 {
 792         struct ws_win           *win;
 793         int                     i, j;
 794
 795         for (i = 0; i < ScreenCount(display); i++)
 796                 for (j = 0; j < SWM_WS_MAX; j++)
 797                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 798                                 if (id == win->id)
 799                                         return (win);
 800         return (NULL);
 801 }
 802
 803 void
 804 spawn(struct swm_region *r, union arg *args)
 805 {
 806         char                    *ret;
 807         int                     si;
 808
 809         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 810         /*
 811          * The double-fork construct avoids zombie processes and keeps the code
 812          * clean from stupid signal handlers.
 813          */
 814         if (fork() == 0) {
 815                 if (fork() == 0) {
 816                         if (display)
 817                                 close(ConnectionNumber(display));
 818                         setenv("LD_PRELOAD", SWM_LIB, 1);
 819                         if (asprintf(&ret, "%d", r->ws->idx)) {
 820                                 setenv("_SWM_WS", ret, 1);
 821                                 free(ret);
 822                         }
 823                         if (asprintf(&ret, "%d", getpid())) {
 824                                 setenv("_SWM_PID", ret, 1);
 825                                 free(ret);
 826                         }
 827                         setsid();
 828                         /* kill stdin, mplayer, ssh-add etc. need that */
 829                         si = open("/dev/null", O_RDONLY, 0);
 830                         if (si == -1)
 831                                 err(1, "open /dev/null");
 832                         if (dup2(si, 0) == -1)
 833                                 err(1, "dup2 /dev/null");
 834                         execvp(args->argv[0], args->argv);
 835                         fprintf(stderr, "execvp failed\n");
 836                         perror(" failed");
 837                 }
 838                 exit(0);
 839         }
 840         wait(0);
 841 }
 842
 843 void
 844 spawnmenu(struct swm_region *r, union arg *args)
 845 {
 846         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
 847
 848         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
 849         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
 850         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
 851         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
 852         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
 853
 854         spawn(r, args);
 855 }
 856
 857 void
 858 unfocus_all(void)
 859 {
 860         struct ws_win           *win;
 861         int                     i, j;
 862
 863         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
 864
 865         for (i = 0; i < ScreenCount(display); i++)
 866                 for (j = 0; j < SWM_WS_MAX; j++)
 867                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
 868                                 if (win->ws->r == NULL)
 869                                         continue;
 870                                 grabbuttons(win, 0);
 871                                 XSetWindowBorder(display, win->id,
 872                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
 873                                 win->got_focus = 0;
 874                                 win->ws->focus = NULL;
 875                                 cur_focus = NULL;
 876                         }
 877 }
 878
 879 void
 880 focus_win(struct ws_win *win)
 881 {
 882         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
 883
 884         if (win == NULL)
 885                 return;
 886
 887         unfocus_all();
 888         win->ws->focus = win;
 889         if (win->ws->r != NULL) {
 890                 cur_focus = win;
 891                 if (!win->got_focus) {
 892                         XSetWindowBorder(display, win->id,
 893                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
 894                         grabbuttons(win, 1);
 895                 }
 896                 win->got_focus = 1;
 897                 XSetInputFocus(display, win->id,
 898                     RevertToPointerRoot, CurrentTime);
 899         }
 900 }
 901
 902 void
 903 switchws(struct swm_region *r, union arg *args)
 904 {
 905         int                     wsid = args->id;
 906         struct swm_region       *this_r, *other_r;
 907         struct ws_win           *win;
 908         struct workspace        *new_ws, *old_ws;
 909
 910         this_r = r;
 911         old_ws = this_r->ws;
 912         new_ws = &this_r->s->ws[wsid];
 913
 914         DNPRINTF(SWM_D_WS, "switchws screen %d region %dx%d+%d+%d: "
 915             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
 916             old_ws->idx, wsid);
 917
 918         if (new_ws == old_ws)
 919                 return;
 920
 921         other_r = new_ws->r;
 922         if (!other_r) {
 923                 /* if the other workspace is hidden, switch windows */
 924                 /* map new window first to prevent ugly blinking */
 925                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
 926                         XMapRaised(display, win->id);
 927
 928                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
 929                         XUnmapWindow(display, win->id);
 930                 old_ws->r = NULL;
 931                 old_ws->restack = 1;
 932         } else {
 933                 other_r->ws = old_ws;
 934                 old_ws->r = other_r;
 935         }
 936         this_r->ws = new_ws;
 937         new_ws->r = this_r;
 938
 939         ignore_enter = 1;
 940         /* set focus */
 941         if (new_ws->focus)
 942                 focus_win(new_ws->focus);
 943         stack();
 944         bar_update();
 945 }
 946
 947 void
 948 cyclews(struct swm_region *r, union arg *args)
 949 {
 950         union                   arg a;
 951         struct swm_screen       *s = r->s;
 952
 953         DNPRINTF(SWM_D_WS, "cyclews id %d "
 954             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
 955             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
 956
 957         a.id = r->ws->idx;
 958         do {
 959                 switch (args->id) {
 960                 case SWM_ARG_ID_CYCLEWS_UP:
 961                         if (a.id < SWM_WS_MAX - 1)
 962                                 a.id++;
 963                         else
 964                                 a.id = 0;
 965                         break;
 966                 case SWM_ARG_ID_CYCLEWS_DOWN:
 967                         if (a.id > 0)
 968                                 a.id--;
 969                         else
 970                                 a.id = SWM_WS_MAX - 1;
 971                         break;
 972                 default:
 973                         return;
 974                 };
 975
 976                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
 977                         continue;
 978                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
 979                         continue;
 980
 981                 switchws(r, &a);
 982         } while (a.id != r->ws->idx);
 983 }
 984
 985 void
 986 cyclescr(struct swm_region *r, union arg *args)
 987 {
 988         struct swm_region       *rr;
 989         int                     i;
 990
 991         i = r->s->idx;
 992         switch (args->id) {
 993         case SWM_ARG_ID_CYCLESC_UP:
 994                 rr = TAILQ_NEXT(r, entry);
 995                 if (rr == NULL)
 996                         rr = TAILQ_FIRST(&screens[i].rl);
 997                 break;
 998         case SWM_ARG_ID_CYCLESC_DOWN:
 999                 rr = TAILQ_PREV(r, swm_region_list, entry);
1000                 if (rr == NULL)
1001                         rr = TAILQ_LAST(&screens[i].rl, swm_region_list);
1002                 break;
1003         default:
1004                 return;
1005         };
1006         unfocus_all();
1007         XSetInputFocus(display, PointerRoot, RevertToPointerRoot, CurrentTime);
1008         XWarpPointer(display, None, rr->s[i].root, 0, 0, 0, 0, rr->g.x,
1009             rr->g.y + bar_enabled ? bar_height : 0);
1010 }
1011
1012 void
1013 swapwin(struct swm_region *r, union arg *args)
1014 {
1015         struct ws_win           *target;
1016         struct ws_win_list      *wl;
1017
1018
1019         DNPRINTF(SWM_D_WS, "swapwin id %d "
1020             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
1021             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1022         if (cur_focus == NULL)
1023                 return;
1024
1025         wl = &cur_focus->ws->winlist;
1026
1027         switch (args->id) {
1028         case SWM_ARG_ID_SWAPPREV:
1029                 target = TAILQ_PREV(cur_focus, ws_win_list, entry);
1030                 TAILQ_REMOVE(wl, cur_focus, entry);
1031                 if (target == NULL)
1032                         TAILQ_INSERT_TAIL(wl, cur_focus, entry);
1033                 else
1034                         TAILQ_INSERT_BEFORE(target, cur_focus, entry);
1035                 break;
1036         case SWM_ARG_ID_SWAPNEXT:
1037                 target = TAILQ_NEXT(cur_focus, entry);
1038                 TAILQ_REMOVE(wl, cur_focus, entry);
1039                 if (target == NULL)
1040                         TAILQ_INSERT_HEAD(wl, cur_focus, entry);
1041                 else
1042                         TAILQ_INSERT_AFTER(wl, target, cur_focus, entry);
1043                 break;
1044         case SWM_ARG_ID_SWAPMAIN:
1045                 target = TAILQ_FIRST(wl);
1046                 if (target == cur_focus)
1047                         return;
1048                 TAILQ_REMOVE(wl, target, entry);
1049                 TAILQ_INSERT_BEFORE(cur_focus, target, entry);
1050                 TAILQ_REMOVE(wl, cur_focus, entry);
1051                 TAILQ_INSERT_HEAD(wl, cur_focus, entry);
1052                 break;
1053         default:
1054                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
1055                 return;
1056         }
1057
1058         ignore_enter = 2;
1059         stack();
1060 }
1061
1062 void
1063 focus(struct swm_region *r, union arg *args)
1064 {
1065         struct ws_win           *winfocus, *winlostfocus;
1066         struct ws_win_list      *wl;
1067
1068         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
1069         if (cur_focus == NULL)
1070                 return;
1071
1072         wl = &cur_focus->ws->winlist;
1073
1074         winlostfocus = cur_focus;
1075
1076         switch (args->id) {
1077         case SWM_ARG_ID_FOCUSPREV:
1078                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1079                 if (winfocus == NULL)
1080                         winfocus = TAILQ_LAST(wl, ws_win_list);
1081                 break;
1082
1083         case SWM_ARG_ID_FOCUSNEXT:
1084                 winfocus = TAILQ_NEXT(cur_focus, entry);
1085                 if (winfocus == NULL)
1086                         winfocus = TAILQ_FIRST(wl);
1087                 break;
1088
1089         case SWM_ARG_ID_FOCUSMAIN:
1090                 winfocus = TAILQ_FIRST(wl);
1091                 break;
1092
1093         default:
1094                 return;
1095         }
1096
1097         if (winfocus == winlostfocus || winfocus == NULL)
1098                 return;
1099
1100         XMapRaised(display, winfocus->id);
1101         focus_win(winfocus);
1102         XSync(display, False);
1103 }
1104
1105 void
1106 cycle_layout(struct swm_region *r, union arg *args)
1107 {
1108         struct workspace        *ws = r->ws;
1109
1110         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1111
1112         ws->cur_layout++;
1113         if (ws->cur_layout->l_stack == NULL)
1114                 ws->cur_layout = &layouts[0];
1115         ignore_enter = 1;
1116         stack();
1117 }
1118
1119 void
1120 stack_config(struct swm_region *r, union arg *args)
1121 {
1122         struct workspace        *ws = r->ws;
1123
1124         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1125             args->id, ws->idx);
1126
1127         if (ws->cur_layout->l_config != NULL)
1128                 ws->cur_layout->l_config(ws, args->id);
1129
1130         if (args->id != SWM_ARG_ID_STACKINIT);
1131                 stack();
1132 }
1133
1134 void
1135 stack(void) {
1136         struct swm_geometry     g;
1137         struct swm_region       *r;
1138         int                     i, j;
1139
1140         DNPRINTF(SWM_D_STACK, "stack\n");
1141
1142         for (i = 0; i < ScreenCount(display); i++) {
1143                 j = 0;
1144                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1145                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1146                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1147
1148                         /* start with screen geometry, adjust for bar */
1149                         g = r->g;
1150                         g.w -= 2;
1151                         g.h -= 2;
1152                         if (bar_enabled) {
1153                                 g.y += bar_height;
1154                                 g.h -= bar_height;
1155                         }
1156
1157                         r->ws->restack = 0;
1158                         r->ws->cur_layout->l_stack(r->ws, &g);
1159                 }
1160         }
1161         XSync(display, False);
1162 }
1163
1164 void
1165 stack_floater(struct ws_win *win, struct swm_region *r)
1166 {
1167         unsigned int            mask;
1168         XWindowChanges          wc;
1169
1170         bzero(&wc, sizeof wc);
1171         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1172         wc.border_width = 1;
1173         if (win->transient) {
1174                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1175                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1176         }
1177         wc.width = win->g.w;
1178         wc.height = win->g.h;
1179         wc.x = (WIDTH(r) - win->g.w) / 2;
1180         wc.y = (HEIGHT(r) - win->g.h) / 2;
1181
1182         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1183             win->id, wc.x, wc.y, wc.width, wc.height);
1184
1185         XConfigureWindow(display, win->id, mask, &wc);
1186 }
1187
1188 #define SWAPXY(g)       do {                            \
1189         int tmp;                                        \
1190         tmp = (g)->y; (g)->y = (g)->x; (g)->x = tmp;    \
1191         tmp = (g)->h; (g)->h = (g)->w; (g)->w = tmp;    \
1192 } while (0)
1193 void
1194 stack_master(struct workspace *ws, struct swm_geometry *g, int rot, int flip)
1195 {
1196         XWindowChanges          wc;
1197         struct swm_geometry     win_g, r_g = *g;
1198         struct ws_win           *win, *winfocus;
1199         int                     i, j, w_inc, h_inc, w_base, h_base;
1200         int                     hrh, extra, h_slice, last_h = 0;
1201         int                     split, colno, winno, mwin, msize, mscale;
1202         int                     remain, missing, v_slice;;
1203         unsigned int            mask;
1204
1205         DNPRINTF(SWM_D_STACK, "stack_master: workspace: %d\n rot=%s flip=%s",
1206             ws->idx, rot ? "yes" : "no", flip ? "yes" : "no");
1207
1208         if ((winno = count_win(ws, 0)) == 0)
1209                 return;
1210
1211         if (ws->focus == NULL)
1212                 ws->focus = TAILQ_FIRST(&ws->winlist);
1213         winfocus = cur_focus ? cur_focus : ws->focus;
1214
1215         win = TAILQ_FIRST(&ws->winlist);
1216         if (rot) {
1217                 w_inc = win->sh.width_inc;
1218                 w_base = win->sh.base_width;
1219                 mwin = ws->l_state.horizontal_mwin;
1220                 mscale = ws->l_state.horizontal_msize;
1221                 SWAPXY(&r_g);
1222         } else {
1223                 w_inc = win->sh.height_inc;
1224                 w_base = win->sh.base_height;
1225                 mwin = ws->l_state.vertical_mwin;
1226                 mscale = ws->l_state.vertical_msize;
1227         }
1228         win_g = r_g;
1229
1230         h_slice = r_g.h / SWM_H_SLICE;
1231         if (mwin && winno > mwin) {
1232                 v_slice = r_g.w / SWM_V_SLICE;
1233
1234                 split = mwin;
1235                 colno = split;
1236                 msize = v_slice * mscale;
1237
1238                 if (w_inc > 1 && w_inc < v_slice) {
1239                         /* adjust for window's requested size increment */
1240                         remain = (win_g.w - w_base) % w_inc;
1241                         missing = w_inc - remain;
1242
1243                         if (missing <= extra || j == 0) {
1244                                 extra -= missing;
1245                                 win_g.w += missing;
1246                         } else {
1247                                 win_g.w -= remain;
1248                                 extra += remain;
1249                         }
1250                 }
1251
1252                 win_g.w = msize;
1253                 if (flip)
1254                         win_g.x += r_g.w - msize;
1255         } else {
1256                 colno = winno;
1257                 split = 0;
1258         }
1259         hrh = r_g.h / colno;
1260         extra = r_g.h - (colno * hrh);
1261         win_g.h = hrh - 2;
1262
1263         i = j = 0;
1264         TAILQ_FOREACH(win, &ws->winlist, entry) {
1265                 if (split && i == split) {
1266                         colno = winno - split;
1267                         hrh = (r_g.h / colno);
1268                         extra = r_g.h - (colno * hrh);
1269                         if (flip)
1270                                 win_g.x = r_g.x;
1271                         else
1272                                 win_g.x += msize + 2;
1273                         win_g.w = r_g.w - (msize + 2);
1274                         j = 0;
1275                 }
1276                 win_g.h = hrh - 2;
1277                 if (rot) {
1278                         h_inc = win->sh.width_inc;
1279                         h_base = win->sh.base_width;
1280                 } else {
1281                         h_inc = win->sh.height_inc;
1282                         h_base = win->sh.base_height;
1283                 }
1284                 if (j == colno - 1) {
1285                         win_g.h = hrh + extra;
1286                 } else if (h_inc > 1 && h_inc < h_slice) {
1287                         /* adjust for window's requested size increment */
1288                         remain = (win_g.h - h_base) % h_inc;
1289                         missing = h_inc - remain;
1290
1291                         if (missing <= extra || j == 0) {
1292                                 extra -= missing;
1293                                 win_g.h += missing;
1294                         } else {
1295                                 win_g.h -= remain;
1296                                 extra += remain;
1297                         }
1298                 }
1299
1300                 if (j == 0)
1301                         win_g.y = r_g.y;
1302                 else
1303                         win_g.y += last_h + 2;
1304
1305                 if (win->transient != 0 || win->floating != 0)
1306                         stack_floater(win, ws->r);
1307                 else {
1308                         bzero(&wc, sizeof wc);
1309                         wc.border_width = 1;
1310                         if (rot) {
1311                                 win->g.x = wc.x = win_g.y;
1312                                 win->g.y = wc.y = win_g.x;
1313                                 win->g.w = wc.width = win_g.h;
1314                                 win->g.h = wc.height = win_g.w;
1315                         } else {
1316                                 win->g.x = wc.x = win_g.x;
1317                                 win->g.y = wc.y = win_g.y;
1318                                 win->g.w = wc.width = win_g.w;
1319                                 win->g.h = wc.height = win_g.h;
1320                         }
1321                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1322                         XConfigureWindow(display, win->id, mask, &wc);
1323                         /*
1324                         fprintf(stderr, "vertical_stack: win %d x %d y %d w %d h %d bw %d\n", win->id, win->g.x, win->g.y, win->g.w , win->g.h, wc.border_width);
1325                         */
1326                 }
1327
1328                 XMapRaised(display, win->id);
1329                 last_h = win_g.h;
1330                 i++;
1331                 j++;
1332         }
1333
1334         if (winfocus)
1335                 focus_win(winfocus); /* has to be done outside of the loop */
1336 }
1337
1338 void
1339 vertical_config(struct workspace *ws, int id)
1340 {
1341         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1342
1343         switch (id) {
1344         case SWM_ARG_ID_STACKRESET:
1345         case SWM_ARG_ID_STACKINIT:
1346                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1347                 ws->l_state.vertical_mwin = 1;
1348                 break;
1349         case SWM_ARG_ID_MASTERSHRINK:
1350                 if (ws->l_state.vertical_msize > 1)
1351                         ws->l_state.vertical_msize--;
1352                 break;
1353         case SWM_ARG_ID_MASTERGROW:
1354                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1355                         ws->l_state.vertical_msize++;
1356                 break;
1357         case SWM_ARG_ID_MASTERADD:
1358                 ws->l_state.vertical_mwin++;
1359                 break;
1360         case SWM_ARG_ID_MASTERDEL:
1361                 if (ws->l_state.vertical_mwin > 0)
1362                         ws->l_state.vertical_mwin--;
1363                 break;
1364         default:
1365                 return;
1366         }
1367 }
1368
1369 void
1370 vertical_stack(struct workspace *ws, struct swm_geometry *g)
1371 {
1372         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1373
1374         stack_master(ws, g, 0, 0);
1375 }
1376
1377 void
1378 horizontal_config(struct workspace *ws, int id)
1379 {
1380         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1381
1382         switch (id) {
1383         case SWM_ARG_ID_STACKRESET:
1384         case SWM_ARG_ID_STACKINIT:
1385                 ws->l_state.horizontal_mwin = 1;
1386                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1387                 break;
1388         case SWM_ARG_ID_MASTERSHRINK:
1389                 if (ws->l_state.horizontal_msize > 1)
1390                         ws->l_state.horizontal_msize--;
1391                 break;
1392         case SWM_ARG_ID_MASTERGROW:
1393                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1394                         ws->l_state.horizontal_msize++;
1395                 break;
1396         case SWM_ARG_ID_MASTERADD:
1397                 ws->l_state.horizontal_mwin++;
1398                 break;
1399         case SWM_ARG_ID_MASTERDEL:
1400                 if (ws->l_state.horizontal_mwin > 0)
1401                         ws->l_state.horizontal_mwin--;
1402                 break;
1403         default:
1404                 return;
1405         }
1406 }
1407
1408 void
1409 horizontal_stack(struct workspace *ws, struct swm_geometry *g)
1410 {
1411         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1412
1413         stack_master(ws, g, 1, 0);
1414 }
1415
1416 /* fullscreen view */
1417 void
1418 max_stack(struct workspace *ws, struct swm_geometry *g) {
1419         XWindowChanges          wc;
1420         struct swm_geometry     gg = *g;
1421         struct ws_win           *win, *winfocus;
1422         unsigned int            mask;
1423
1424         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1425
1426         if (count_win(ws, 0) == 0)
1427                 return;
1428
1429         if (ws->focus == NULL)
1430                 ws->focus = TAILQ_FIRST(&ws->winlist);
1431         winfocus = cur_focus ? cur_focus : ws->focus;
1432
1433         TAILQ_FOREACH(win, &ws->winlist, entry) {
1434                 if (win->transient != 0 || win->floating != 0) {
1435                         if (win == ws->focus) {
1436                                 /* XXX maximize? */
1437                                 stack_floater(win, ws->r);
1438                                 XMapRaised(display, win->id);
1439                         } else
1440                                 XUnmapWindow(display, win->id);
1441                 } else {
1442                         bzero(&wc, sizeof wc);
1443                         wc.border_width = 1;
1444                         win->g.x = wc.x = gg.x;
1445                         win->g.y = wc.y = gg.y;
1446                         win->g.w = wc.width = gg.w;
1447                         win->g.h = wc.height = gg.h;
1448                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1449                         XConfigureWindow(display, win->id, mask, &wc);
1450
1451                         if (win == ws->focus) {
1452                                 XMapRaised(display, win->id);
1453                         } else
1454                                 XUnmapWindow(display, win->id);
1455                 }
1456         }
1457
1458         if (winfocus)
1459                 focus_win(winfocus); /* has to be done outside of the loop */
1460 }
1461
1462 void
1463 send_to_ws(struct swm_region *r, union arg *args)
1464 {
1465         int                     wsid = args->id;
1466         struct ws_win           *win = cur_focus;
1467         struct workspace        *ws, *nws;
1468         Atom                    ws_idx_atom = 0;
1469         unsigned char           ws_idx_str[SWM_PROPLEN];
1470
1471         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1472
1473         ws = win->ws;
1474         nws = &win->s->ws[wsid];
1475
1476         XUnmapWindow(display, win->id);
1477
1478         /* find a window to focus */
1479         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1480         if (ws->focus == NULL)
1481                 ws->focus = TAILQ_FIRST(&ws->winlist);
1482         if (ws->focus == win)
1483                 ws->focus = NULL;
1484
1485         TAILQ_REMOVE(&ws->winlist, win, entry);
1486
1487         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1488         win->ws = nws;
1489
1490         /* Try to update the window's workspace property */
1491         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1492         if (ws_idx_atom &&
1493             snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
1494                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1495                     ws_idx_str);
1496                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1497                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1498         }
1499
1500         if (count_win(nws, 1) == 1)
1501                 nws->focus = win;
1502         ws->restack = 1;
1503         nws->restack = 1;
1504
1505         stack();
1506 }
1507
1508 void
1509 wkill(struct swm_region *r, union arg *args)
1510 {
1511         DNPRINTF(SWM_D_MISC, "wkill\n");
1512         if(r->ws->focus != NULL)
1513                 XKillClient(display, r->ws->focus->id);
1514 }
1515
1516 void
1517 screenshot(struct swm_region *r, union arg *args)
1518 {
1519         union arg                       a;
1520
1521         DNPRINTF(SWM_D_MISC, "screenshot\n");
1522
1523         if (ss_enabled == 0)
1524                 return;
1525
1526         switch (args->id) {
1527         case SWM_ARG_ID_SS_ALL:
1528                 spawn_screenshot[1] = "full";
1529                 break;
1530         case SWM_ARG_ID_SS_WINDOW:
1531                 spawn_screenshot[1] = "window";
1532                 break;
1533         default:
1534                 return;
1535         }
1536         a.argv = spawn_screenshot;
1537         spawn(r, &a);
1538 }
1539
1540 /* key definitions */
1541 struct key {
1542         unsigned int            mod;
1543         KeySym                  keysym;
1544         void                    (*func)(struct swm_region *r, union arg *);
1545         union arg               args;
1546 } keys[] = {
1547         /* modifier             key     function                argument */
1548         { MODKEY,               XK_space,       cycle_layout,   {0} },
1549         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1550         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1551         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1552         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1553         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1554         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1555         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1556         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1557         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1558         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1559         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1560         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1561         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1562         { MODKEY,               XK_q,           restart,        {0} },
1563         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1564         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1565         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1566         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1567         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1568         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1569         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1570         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1571         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1572         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1573         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1574         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1575         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1576         { MODKEY | ShiftMask,   XK_Right,       cyclescr,       {.id = SWM_ARG_ID_CYCLESC_UP} },
1577         { MODKEY | ShiftMask,   XK_Left,        cyclescr,       {.id = SWM_ARG_ID_CYCLESC_DOWN} },
1578         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1579         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1580         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1581         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1582         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1583         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1584         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1585         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1586         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1587         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1588         { MODKEY,               XK_b,           bar_toggle,     {0} },
1589         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1590         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1591         { MODKEY | ShiftMask,   XK_x,           wkill,          {0} },
1592         { MODKEY,               XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_ALL} },
1593         { MODKEY | ShiftMask,   XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_WINDOW} },
1594 };
1595
1596 void
1597 click(struct swm_region *r, union arg *args)
1598 {
1599         DNPRINTF(SWM_D_MOUSE, "click: button: %d\n", args->id);
1600
1601         switch (args->id) {
1602         case Button1:
1603                 break;
1604         case Button2:
1605                 break;
1606         case Button3:
1607                 break;
1608         default:
1609                 return;
1610         }
1611 }
1612
1613 /* mouse */
1614 enum { client_click, root_click };
1615 struct button {
1616         unsigned int            action;
1617         unsigned int            mask;
1618         unsigned int            button;
1619         void                    (*func)(struct swm_region *r, union arg *);
1620         union arg               args;
1621 } buttons[] = {
1622           /* action             key             mouse button    func            args */
1623         { client_click,         MODKEY,         Button1,        click, {.id=Button1} },
1624 };
1625
1626 void
1627 updatenumlockmask(void)
1628 {
1629         unsigned int            i, j;
1630         XModifierKeymap         *modmap;
1631
1632         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1633         numlockmask = 0;
1634         modmap = XGetModifierMapping(display);
1635         for (i = 0; i < 8; i++)
1636                 for (j = 0; j < modmap->max_keypermod; j++)
1637                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1638                           == XKeysymToKeycode(display, XK_Num_Lock))
1639                                 numlockmask = (1 << i);
1640
1641         XFreeModifiermap(modmap);
1642 }
1643
1644 void
1645 grabkeys(void)
1646 {
1647         unsigned int            i, j, k;
1648         KeyCode                 code;
1649         unsigned int            modifiers[] =
1650             { 0, LockMask, numlockmask, numlockmask | LockMask };
1651
1652         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1653         updatenumlockmask();
1654
1655         for (k = 0; k < ScreenCount(display); k++) {
1656                 if (TAILQ_EMPTY(&screens[k].rl))
1657                         continue;
1658                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1659                 for (i = 0; i < LENGTH(keys); i++) {
1660                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1661                                 for (j = 0; j < LENGTH(modifiers); j++)
1662                                         XGrabKey(display, code,
1663                                             keys[i].mod | modifiers[j],
1664                                             screens[k].root, True,
1665                                             GrabModeAsync, GrabModeAsync);
1666                 }
1667         }
1668 }
1669
1670 void
1671 grabbuttons(struct ws_win *win, int focused)
1672 {
1673         unsigned int            i, j;
1674         unsigned int            modifiers[] =
1675             { 0, LockMask, numlockmask, numlockmask|LockMask };
1676
1677         updatenumlockmask();
1678         XUngrabButton(display, AnyButton, AnyModifier, win->id);
1679         if(focused) {
1680                 for (i = 0; i < LENGTH(buttons); i++)
1681                         if (buttons[i].action == client_click)
1682                                 for (j = 0; j < LENGTH(modifiers); j++)
1683                                         XGrabButton(display, buttons[i].button,
1684                                             buttons[i].mask | modifiers[j],
1685                                             win->id, False, BUTTONMASK,
1686                                             GrabModeAsync, GrabModeSync, None,
1687                                             None);
1688         } else
1689                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
1690                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
1691 }
1692
1693 void
1694 expose(XEvent *e)
1695 {
1696         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1697 }
1698
1699 void
1700 keypress(XEvent *e)
1701 {
1702         unsigned int            i;
1703         KeySym                  keysym;
1704         XKeyEvent               *ev = &e->xkey;
1705
1706         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1707
1708         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1709         for (i = 0; i < LENGTH(keys); i++)
1710                 if (keysym == keys[i].keysym
1711                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1712                    && keys[i].func)
1713                         keys[i].func(root_to_region(ev->root),
1714                             &(keys[i].args));
1715 }
1716
1717 void
1718 buttonpress(XEvent *e)
1719 {
1720         XButtonPressedEvent     *ev = &e->xbutton;
1721
1722         struct ws_win           *win;
1723         int                     i, action;
1724
1725         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
1726
1727         action = root_click;
1728         if ((win = find_window(ev->window)) == NULL)
1729                 return;
1730         else {
1731                 focus_win(win);
1732                 action = client_click;
1733         }
1734
1735         for (i = 0; i < LENGTH(buttons); i++)
1736                 if (action == buttons[i].action && buttons[i].func &&
1737                     buttons[i].button == ev->button &&
1738                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
1739                         buttons[i].func(root_to_region(ev->root),
1740                         &buttons[i].args);
1741 }
1742
1743 void
1744 set_win_state(struct ws_win *win, long state)
1745 {
1746         long                    data[] = {state, None};
1747
1748         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
1749
1750         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
1751             (unsigned char *)data, 2);
1752 }
1753
1754 struct ws_win *
1755 manage_window(Window id)
1756 {
1757         Window                  trans;
1758         struct workspace        *ws;
1759         struct ws_win           *win;
1760         XClassHint              ch;
1761         int                     format;
1762         unsigned long           nitems, bytes;
1763         Atom                    ws_idx_atom = 0, type;
1764         unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
1765         struct swm_region       *r;
1766         long                    mask;
1767         int                     ws_idx;
1768         const char              *errstr;
1769
1770         if ((win = find_window(id)) != NULL)
1771                         return (win);   /* already being managed */
1772
1773         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
1774                 errx(1, "calloc: failed to allocate memory for new window");
1775
1776         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1777         if (ws_idx_atom)
1778                 XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
1779                     False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
1780
1781         XGetWindowAttributes(display, id, &win->wa);
1782         r = root_to_region(win->wa.root);
1783         /* If the window was managed before, put it in the same workspace */
1784         if (prop) {
1785                 DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
1786                 ws_idx = strtonum(prop, 0, 9, &errstr);
1787                 if (errstr)
1788                         DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
1789                             errstr, prop);
1790                 ws = &r->s->ws[ws_idx];
1791         } else
1792                 ws = r->ws;
1793
1794         win->id = id;
1795         win->ws = ws;
1796         win->s = r->s;  /* this never changes */
1797         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
1798
1799         XGetTransientForHint(display, win->id, &trans);
1800         if (trans) {
1801                 win->transient = trans;
1802                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
1803                     (unsigned)win->id, win->transient);
1804         }
1805         win->g.w = win->wa.width;
1806         win->g.h = win->wa.height;
1807         win->g.x = win->wa.x;
1808         win->g.y = win->wa.y;
1809
1810         XGetWMNormalHints(display, win->id, &win->sh, &mask);
1811
1812         if (ws_idx_atom && prop == NULL &&
1813             snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
1814                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1815                     ws_idx_str);
1816                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1817                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1818         }
1819         XFree(prop);
1820
1821         /*
1822         fprintf(stderr, "manage window: %d x %d y %d w %d h %d\n", win->id, win->g.x, win->g.y, win->g.w, win->g.h);
1823         */
1824
1825         /* XXX make this a table */
1826         bzero(&ch, sizeof ch);
1827         if (XGetClassHint(display, win->id, &ch)) {
1828                 /*fprintf(stderr, "class: %s name: %s\n", ch.res_class, ch.res_name); */
1829                 if (!strcmp(ch.res_class, "MPlayer") && !strcmp(ch.res_name, "xv")) {
1830                         win->floating = 1;
1831                 }
1832                 if (ch.res_class)
1833                         XFree(ch.res_class);
1834                 if (ch.res_name)
1835                         XFree(ch.res_name);
1836         }
1837
1838         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
1839             PropertyChangeMask | StructureNotifyMask);
1840
1841         set_win_state(win, NormalState);
1842
1843         /* make new win focused */
1844         focus_win(win);
1845
1846
1847         return (win);
1848 }
1849
1850 void
1851 configurerequest(XEvent *e)
1852 {
1853         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
1854         struct ws_win           *win;
1855         int                     new = 0;
1856         XWindowChanges          wc;
1857
1858         if ((win = find_window(ev->window)) == NULL)
1859                 new = 1;
1860
1861         if (new) {
1862                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
1863                     ev->window);
1864                 /*
1865                 fprintf(stderr, "configurerequest: new window: %lu x %d y %d w %d h %d bw %d s %d sm %d\n",
1866                     ev->window, ev->x, ev->y, ev->width, ev->height, ev->border_width, ev->above, ev->detail);
1867                 */
1868                 bzero(&wc, sizeof wc);
1869                 wc.x = ev->x;
1870                 wc.y = ev->y;
1871                 wc.width = ev->width;
1872                 wc.height = ev->height;
1873                 wc.border_width = ev->border_width;
1874                 wc.sibling = ev->above;
1875                 wc.stack_mode = ev->detail;
1876                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
1877         } else {
1878                 /*
1879                 fprintf(stderr, "configurerequest: change window: %lu\n",
1880                     ev->window);
1881                 */
1882                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
1883                     ev->window);
1884                 if (win->floating) {
1885                         if (ev->value_mask & CWX)
1886                                 win->g.x = ev->x;
1887                         if (ev->value_mask & CWY)
1888                                 win->g.y = ev->y;
1889                         if (ev->value_mask & CWWidth)
1890                                 win->g.w = ev->width;
1891                         if (ev->value_mask & CWHeight)
1892                                 win->g.h = ev->height;
1893                         if (win->ws->r != NULL) {
1894                                 /* this seems to be full screen */
1895                                 if (win->g.w > WIDTH(win->ws->r)) {
1896                                         /* kill border */
1897                                         win->g.x -= 1;
1898                                         win->g.w += 1;
1899                                 }
1900                                 if (win->g.h > HEIGHT(win->ws->r)) {
1901                                         /* kill border */
1902                                         win->g.y -= 1;
1903                                         win->g.h += 1;
1904                                 }
1905                         }
1906                         if ((ev->value_mask & (CWX|CWY)) &&
1907                             !(ev->value_mask & (CWWidth|CWHeight)))
1908                                 config_win(win);
1909                         XMoveResizeWindow(display, win->id,
1910                             win->g.x, win->g.y, win->g.w, win->g.h);
1911                 } else
1912                         config_win(win);
1913         }
1914 }
1915
1916 void
1917 configurenotify(XEvent *e)
1918 {
1919         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
1920             e->xconfigure.window);
1921 }
1922
1923 void
1924 destroynotify(XEvent *e)
1925 {
1926         struct ws_win           *win;
1927         XDestroyWindowEvent     *ev = &e->xdestroywindow;
1928         struct workspace        *ws;
1929
1930         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
1931
1932         if ((win = find_window(ev->window)) != NULL) {
1933                 ws = win->ws;
1934                 /* find a window to focus */
1935                 if (ws->focus == win)
1936                         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1937                 if (ws->focus == NULL)
1938                         ws->focus = TAILQ_FIRST(&ws->winlist);
1939                 if (ws->focus == NULL || ws->focus == win) {
1940                         ws->focus = NULL;
1941                         unfocus_all();
1942                 } else
1943                         focus_win(ws->focus);
1944                 TAILQ_REMOVE(&ws->winlist, win, entry);
1945                 set_win_state(win, WithdrawnState);
1946                 free(win);
1947                 stack();
1948         }
1949 }
1950
1951 void
1952 enternotify(XEvent *e)
1953 {
1954         XCrossingEvent          *ev = &e->xcrossing;
1955         struct ws_win           *win;
1956
1957         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
1958
1959         if (ignore_enter) {
1960                 /* eat event(r) to prevent autofocus */
1961                 ignore_enter--;
1962                 return;
1963         }
1964
1965         if ((win = find_window(ev->window)) != NULL)
1966                 focus_win(win);
1967 }
1968
1969 void
1970 focusin(XEvent *e)
1971 {
1972         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
1973 }
1974
1975 void
1976 mappingnotify(XEvent *e)
1977 {
1978         XMappingEvent           *ev = &e->xmapping;
1979
1980         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
1981
1982         XRefreshKeyboardMapping(ev);
1983         if (ev->request == MappingKeyboard)
1984                 grabkeys();
1985 }
1986
1987 void
1988 maprequest(XEvent *e)
1989 {
1990         XMapRequestEvent        *ev = &e->xmaprequest;
1991         XWindowAttributes       wa;
1992
1993         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
1994             e->xmaprequest.window);
1995
1996         if (!XGetWindowAttributes(display, ev->window, &wa))
1997                 return;
1998         if (wa.override_redirect)
1999                 return;
2000         manage_window(e->xmaprequest.window);
2001         stack();
2002 }
2003
2004 void
2005 propertynotify(XEvent *e)
2006 {
2007         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
2008             e->xproperty.window);
2009 }
2010
2011 void
2012 unmapnotify(XEvent *e)
2013 {
2014         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
2015 }
2016
2017 void
2018 visibilitynotify(XEvent *e)
2019 {
2020         int                     i;
2021         struct swm_region       *r;
2022
2023         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
2024             e->xvisibility.window);
2025         if (e->xvisibility.state == VisibilityUnobscured)
2026                 for (i = 0; i < ScreenCount(display); i++)
2027                         TAILQ_FOREACH(r, &screens[i].rl, entry)
2028                                 if (e->xvisibility.window == r->bar_window)
2029                                         bar_update();
2030 }
2031
2032 void                    (*handler[LASTEvent])(XEvent *) = {
2033                                 [Expose] = expose,
2034                                 [KeyPress] = keypress,
2035                                 [ButtonPress] = buttonpress,
2036                                 [ConfigureRequest] = configurerequest,
2037                                 [ConfigureNotify] = configurenotify,
2038                                 [DestroyNotify] = destroynotify,
2039                                 [EnterNotify] = enternotify,
2040                                 [FocusIn] = focusin,
2041                                 [MappingNotify] = mappingnotify,
2042                                 [MapRequest] = maprequest,
2043                                 [PropertyNotify] = propertynotify,
2044                                 [UnmapNotify] = unmapnotify,
2045                                 [VisibilityNotify] = visibilitynotify,
2046 };
2047
2048 int
2049 xerror_start(Display *d, XErrorEvent *ee)
2050 {
2051         other_wm = 1;
2052         return (-1);
2053 }
2054
2055 int
2056 xerror(Display *d, XErrorEvent *ee)
2057 {
2058         /* fprintf(stderr, "error: %p %p\n", display, ee); */
2059         return (-1);
2060 }
2061
2062 int
2063 active_wm(void)
2064 {
2065         other_wm = 0;
2066         xerrorxlib = XSetErrorHandler(xerror_start);
2067
2068         /* this causes an error if some other window manager is running */
2069         XSelectInput(display, DefaultRootWindow(display),
2070             SubstructureRedirectMask);
2071         XSync(display, False);
2072         if (other_wm)
2073                 return (1);
2074
2075         XSetErrorHandler(xerror);
2076         XSync(display, False);
2077         return (0);
2078 }
2079
2080 long
2081 getstate(Window w)
2082 {
2083         int                     format, status;
2084         long                    result = -1;
2085         unsigned char           *p = NULL;
2086         unsigned long           n, extra;
2087         Atom                    real;
2088
2089         astate = XInternAtom(display, "WM_STATE", False);
2090         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
2091             &real, &format, &n, &extra, (unsigned char **)&p);
2092         if (status != Success)
2093                 return (-1);
2094         if (n != 0)
2095                 result = *p;
2096         XFree(p);
2097         return (result);
2098 }
2099
2100 void
2101 new_region(struct swm_screen *s, struct workspace *ws,
2102     int x, int y, int w, int h)
2103 {
2104         struct swm_region       *r;
2105
2106         DNPRINTF(SWM_D_MISC, "new region on screen %d: %dx%d (%d, %d)\n",
2107              s->idx, x, y, w, h);
2108
2109         if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
2110                 errx(1, "calloc: failed to allocate memory for screen");
2111
2112         X(r) = x;
2113         Y(r) = y;
2114         WIDTH(r) = w;
2115         HEIGHT(r) = h;
2116         r->s = s;
2117         r->ws = ws;
2118         ws->r = r;
2119         TAILQ_INSERT_TAIL(&s->rl, r, entry);
2120         bar_setup(r);
2121 }
2122
2123 void
2124 setup_screens(void)
2125 {
2126 #ifdef SWM_XRR_HAS_CRTC
2127         XRRCrtcInfo             *ci;
2128         XRRScreenResources      *sr;
2129         int                     c;
2130 #endif /* SWM_XRR_HAS_CRTC */
2131         Window                  d1, d2, *wins = NULL;
2132         XWindowAttributes       wa;
2133         struct swm_region       *r;
2134         unsigned int            no;
2135         int                     errorbase, major, minor;
2136         int                     ncrtc = 0, w = 0;
2137         int                     i, j, k;
2138         struct workspace        *ws;
2139         int                     ws_idx_atom;
2140
2141
2142         if ((screens = calloc(ScreenCount(display),
2143              sizeof(struct swm_screen))) == NULL)
2144                 errx(1, "calloc: screens");
2145
2146         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2147
2148
2149         /* map physical screens */
2150         for (i = 0; i < ScreenCount(display); i++) {
2151                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2152                 screens[i].idx = i;
2153                 TAILQ_INIT(&screens[i].rl);
2154                 screens[i].root = RootWindow(display, i);
2155
2156                 /* set default colors */
2157                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2158                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2159                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2160                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2161                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2162
2163                 /* init all workspaces */
2164                 for (j = 0; j < SWM_WS_MAX; j++) {
2165                         ws = &screens[i].ws[j];
2166                         ws->idx = j;
2167                         ws->restack = 1;
2168                         ws->focus = NULL;
2169                         ws->r = NULL;
2170                         TAILQ_INIT(&ws->winlist);
2171
2172                         for (k = 0; layouts[k].l_stack != NULL; k++)
2173                                 if (layouts[k].l_config != NULL)
2174                                         layouts[k].l_config(ws,
2175                                             SWM_ARG_ID_STACKINIT);
2176                         ws->cur_layout = &layouts[0];
2177                 }
2178
2179                 /* map virtual screens onto physical screens */
2180                 screens[i].xrandr_support = XRRQueryExtension(display,
2181                     &xrandr_eventbase, &errorbase);
2182                 if (screens[i].xrandr_support)
2183                         if (XRRQueryVersion(display, &major, &minor) &&
2184                             major < 1)
2185                                 screens[i].xrandr_support = 0;
2186
2187 #if 0   /* not ready for dynamic screen changes */
2188                 if (screens[i].xrandr_support)
2189                         XRRSelectInput(display,
2190                             screens[r->s].root,
2191                             RRScreenChangeNotifyMask);
2192 #endif
2193
2194                 /* grab existing windows (before we build the bars)*/
2195                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2196                         continue;
2197
2198 #ifdef SWM_XRR_HAS_CRTC
2199                 sr = XRRGetScreenResources(display, screens[i].root);
2200                 if (sr == NULL)
2201                         new_region(&screens[i], &screens[i].ws[w],
2202                             0, 0, DisplayWidth(display, i),
2203                             DisplayHeight(display, i));
2204                 else
2205                         ncrtc = sr->ncrtc;
2206
2207                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2208                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2209                         if (ci->noutput == 0)
2210                                 continue;
2211
2212                         if (ci != NULL && ci->mode == None)
2213                                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2214                                     DisplayWidth(display, i),
2215                                     DisplayHeight(display, i));
2216                         else
2217                                 new_region(&screens[i], &screens[i].ws[w],
2218                                     ci->x, ci->y, ci->width, ci->height);
2219                         w++;
2220                 }
2221                 if (ci)
2222                         XRRFreeCrtcInfo(ci);
2223                 XRRFreeScreenResources(sr);
2224 #else
2225                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2226                     DisplayWidth(display, i),
2227                     DisplayHeight(display, i));
2228 #endif /* SWM_XRR_HAS_CRTC */
2229
2230                 /* attach windows to a region */
2231                 /* normal windows */
2232                 if ((r = TAILQ_FIRST(&screens[i].rl)) == NULL)
2233                         errx(1, "no regions on screen %d", i);
2234
2235                 for (i = 0; i < no; i++) {
2236                         XGetWindowAttributes(display, wins[i], &wa);
2237                         if (!XGetWindowAttributes(display, wins[i], &wa) ||
2238                             wa.override_redirect ||
2239                             XGetTransientForHint(display, wins[i], &d1))
2240                                 continue;
2241
2242                         if (wa.map_state == IsViewable ||
2243                             getstate(wins[i]) == NormalState)
2244                                 manage_window(wins[i]);
2245                 }
2246                 /* transient windows */
2247                 for (i = 0; i < no; i++) {
2248                         if (!XGetWindowAttributes(display, wins[i], &wa))
2249                                 continue;
2250
2251                         if (XGetTransientForHint(display, wins[i], &d1) &&
2252                             (wa.map_state == IsViewable || getstate(wins[i]) ==
2253                             NormalState))
2254                                 manage_window(wins[i]);
2255                 }
2256                 if (wins) {
2257                         XFree(wins);
2258                         wins = NULL;
2259                 }
2260         }
2261 }
2262
2263 int
2264 main(int argc, char *argv[])
2265 {
2266         struct passwd           *pwd;
2267         char                    conf[PATH_MAX], *cfile = NULL;
2268         struct stat             sb;
2269         XEvent                  e;
2270         int                     xfd;
2271         fd_set                  rd;
2272
2273         start_argv = argv;
2274         fprintf(stderr, "Welcome to scrotwm V%s cvs tag: %s\n",
2275             SWM_VERSION, cvstag);
2276         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2277                 warnx("no locale support");
2278
2279         if (!(display = XOpenDisplay(0)))
2280                 errx(1, "can not open display");
2281
2282         if (active_wm())
2283                 errx(1, "other wm running");
2284
2285         astate = XInternAtom(display, "WM_STATE", False);
2286
2287         /* look for local and global conf file */
2288         pwd = getpwuid(getuid());
2289         if (pwd == NULL)
2290                 errx(1, "invalid user %d", getuid());
2291
2292         setup_screens();
2293
2294         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2295         if (stat(conf, &sb) != -1) {
2296                 if (S_ISREG(sb.st_mode))
2297                         cfile = conf;
2298         } else {
2299                 /* try global conf file */
2300                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2301                 if (!stat(conf, &sb))
2302                         if (S_ISREG(sb.st_mode))
2303                                 cfile = conf;
2304         }
2305         if (cfile)
2306                 conf_load(cfile);
2307         bar_refresh();
2308
2309         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2310
2311         grabkeys();
2312         stack();
2313
2314         xfd = ConnectionNumber(display);
2315         while (running) {
2316                 FD_ZERO(&rd);
2317                 FD_SET(xfd, &rd);
2318                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2319                         if (errno != EINTR)
2320                                 errx(1, "select failed");
2321                 if (bar_alarm) {
2322                         bar_alarm = 0;
2323                         bar_update();
2324                 }
2325                 while(XPending(display)) {
2326                         XNextEvent(display, &e);
2327                         if (handler[e.type])
2328                                 handler[e.type](&e);
2329                 }
2330         }
2331
2332         XCloseDisplay(display);
2333
2334         return (0);
2335 }