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     "0.7"
  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 #define SWM_D_CLASS             0x0100
 108
 109 u_int32_t               swm_debug = 0
 110                             | SWM_D_MISC
 111                             | SWM_D_EVENT
 112                             | SWM_D_WS
 113                             | SWM_D_FOCUS
 114                             | SWM_D_MOVE
 115                             | SWM_D_STACK
 116                             | SWM_D_MOUSE
 117                             | SWM_D_PROP
 118                             | SWM_D_CLASS
 119                             ;
 120 #else
 121 #define DPRINTF(x...)
 122 #define DNPRINTF(n,x...)
 123 #endif
 124
 125 #define LENGTH(x)               (sizeof x / sizeof x[0])
 126 #define MODKEY                  Mod1Mask
 127 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
 128 #define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
 129 #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
 130 #define SWM_PROPLEN             (16)
 131 #define X(r)                    (r)->g.x
 132 #define Y(r)                    (r)->g.y
 133 #define WIDTH(r)                (r)->g.w
 134 #define HEIGHT(r)               (r)->g.h
 135
 136 #ifndef SWM_LIB
 137 #define SWM_LIB                 "/usr/X11R6/lib/swmhack.so"
 138 #endif
 139
 140 char                    **start_argv;
 141 Atom                    astate;
 142 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 143 int                     other_wm;
 144 int                     running = 1;
 145 int                     ss_enabled = 0;
 146 int                     xrandr_eventbase;
 147 int                     ignore_enter = 0;
 148 unsigned int            numlockmask = 0;
 149 Display                 *display;
 150
 151 int                     cycle_empty = 0;
 152 int                     cycle_visible = 0;
 153
 154 /* dialog windows */
 155 double                  dialog_ratio = .6;
 156 /* status bar */
 157 #define SWM_BAR_MAX     (128)
 158 char                    *bar_argv[] = { NULL, NULL };
 159 int                     bar_pipe[2];
 160 char                    bar_ext[SWM_BAR_MAX];
 161 char                    bar_vertext[SWM_BAR_MAX];
 162 int                     bar_version = 0;
 163 sig_atomic_t            bar_alarm = 0;
 164 int                     bar_delay = 30;
 165 int                     bar_enabled = 1;
 166 int                     bar_extra = 1;
 167 int                     bar_extra_running = 0;
 168 int                     bar_verbose = 1;
 169 int                     bar_height = 0;
 170 pid_t                   bar_pid;
 171 GC                      bar_gc;
 172 XGCValues               bar_gcv;
 173 int                     bar_fidx = 0;
 174 XFontStruct             *bar_fs;
 175 char                    *bar_fonts[] = {
 176                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 177                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 178                             NULL
 179 };
 180
 181 /* terminal + args */
 182 char                    *spawn_term[] = { "xterm", NULL };
 183 char                    *spawn_screenshot[] = { "screenshot.sh", NULL, NULL };
 184 char                    *spawn_lock[] = { "xlock", NULL };
 185 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL, "-nb", NULL,
 186                             "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 187
 188 #define SWM_MENU_FN     (2)
 189 #define SWM_MENU_NB     (4)
 190 #define SWM_MENU_NF     (6)
 191 #define SWM_MENU_SB     (8)
 192 #define SWM_MENU_SF     (10)
 193
 194 /* layout manager data */
 195 struct swm_geometry {
 196         int                     x;
 197         int                     y;
 198         int                     w;
 199         int                     h;
 200 };
 201
 202 struct swm_screen;
 203 struct workspace;
 204
 205 /* virtual "screens" */
 206 struct swm_region {
 207         TAILQ_ENTRY(swm_region) entry;
 208         struct swm_geometry     g;
 209         struct workspace        *ws;    /* current workspace on this region */
 210         struct swm_screen       *s;     /* screen idx */
 211         Window                  bar_window;
 212 };
 213 TAILQ_HEAD(swm_region_list, swm_region);
 214
 215 struct ws_win {
 216         TAILQ_ENTRY(ws_win)     entry;
 217         Window                  id;
 218         struct swm_geometry     g;
 219         int                     got_focus;
 220         int                     floating;
 221         int                     transient;
 222         int                     manual;
 223         struct workspace        *ws;    /* always valid */
 224         struct swm_screen       *s;     /* always valid, never changes */
 225         XWindowAttributes       wa;
 226         XSizeHints              sh;
 227         XClassHint              ch;
 228 };
 229 TAILQ_HEAD(ws_win_list, ws_win);
 230
 231 /* layout handlers */
 232 void    stack(void);
 233 void    vertical_config(struct workspace *, int);
 234 void    vertical_stack(struct workspace *, struct swm_geometry *);
 235 void    horizontal_config(struct workspace *, int);
 236 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 237 void    max_stack(struct workspace *, struct swm_geometry *);
 238
 239 void    grabbuttons(struct ws_win *, int);
 240
 241 struct layout {
 242         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 243         void            (*l_config)(struct workspace *, int);
 244 } layouts[] =  {
 245         /* stack,               configure */
 246         { vertical_stack,       vertical_config},
 247         { horizontal_stack,     horizontal_config},
 248         { max_stack,            NULL},
 249         { NULL,                 NULL},
 250 };
 251
 252 #define SWM_H_SLICE             (32)
 253 #define SWM_V_SLICE             (32)
 254
 255 /* define work spaces */
 256 struct workspace {
 257         int                     idx;            /* workspace index */
 258         int                     restack;        /* restack on switch */
 259         struct layout           *cur_layout;    /* current layout handlers */
 260         struct ws_win           *focus;         /* may be NULL */
 261         struct swm_region       *r;             /* may be NULL */
 262         struct ws_win_list      winlist;        /* list of windows in ws */
 263
 264         /* stacker state */
 265         struct {
 266                                 int horizontal_msize;
 267                                 int horizontal_mwin;
 268                                 int vertical_msize;
 269                                 int vertical_mwin;
 270         } l_state;
 271 };
 272
 273 enum    { SWM_S_COLOR_BAR, SWM_S_COLOR_BAR_BORDER, SWM_S_COLOR_BAR_FONT,
 274           SWM_S_COLOR_FOCUS, SWM_S_COLOR_UNFOCUS, SWM_S_COLOR_MAX };
 275
 276 /* physical screen mapping */
 277 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 278 struct swm_screen {
 279         int                     idx;            /* screen index */
 280         struct swm_region_list  rl;     /* list of regions on this screen */
 281         Window                  root;
 282         int                     xrandr_support;
 283         struct workspace        ws[SWM_WS_MAX];
 284
 285         /* colors */
 286         struct {
 287                 unsigned long   color;
 288                 char            *name;
 289         } c[SWM_S_COLOR_MAX];
 290 };
 291 struct swm_screen       *screens;
 292 int                     num_screens;
 293
 294 struct ws_win           *cur_focus = NULL;
 295
 296 /* args to functions */
 297 union arg {
 298         int                     id;
 299 #define SWM_ARG_ID_FOCUSNEXT    (0)
 300 #define SWM_ARG_ID_FOCUSPREV    (1)
 301 #define SWM_ARG_ID_FOCUSMAIN    (2)
 302 #define SWM_ARG_ID_SWAPNEXT     (3)
 303 #define SWM_ARG_ID_SWAPPREV     (4)
 304 #define SWM_ARG_ID_SWAPMAIN     (5)
 305 #define SWM_ARG_ID_MASTERSHRINK (6)
 306 #define SWM_ARG_ID_MASTERGROW   (7)
 307 #define SWM_ARG_ID_MASTERADD    (8)
 308 #define SWM_ARG_ID_MASTERDEL    (9)
 309 #define SWM_ARG_ID_STACKRESET   (10)
 310 #define SWM_ARG_ID_STACKINIT    (11)
 311 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 312 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 313 #define SWM_ARG_ID_CYCLESC_UP   (14)
 314 #define SWM_ARG_ID_CYCLESC_DOWN (15)
 315 #define SWM_ARG_ID_SS_ALL       (0)
 316 #define SWM_ARG_ID_SS_WINDOW    (1)
 317 #define SWM_ARG_ID_DONTCENTER   (0)
 318 #define SWM_ARG_ID_CENTER       (1)
 319         char                    **argv;
 320 };
 321
 322 /* quirks */
 323 struct quirk {
 324         char                    *class;
 325         char                    *name;
 326         unsigned long           quirk;
 327 #define SWM_Q_FLOAT             (1<<0)
 328 } quirks[] = {
 329         { "MPlayer",            "xv",           SWM_Q_FLOAT },
 330         { "OpenOffice.org 2.4", "VCLSalFrame",  SWM_Q_FLOAT },
 331         { NULL,         NULL,           0},
 332 };
 333
 334 /* events */
 335 void                    expose(XEvent *);
 336 void                    keypress(XEvent *);
 337 void                    buttonpress(XEvent *);
 338 void                    configurerequest(XEvent *);
 339 void                    configurenotify(XEvent *);
 340 void                    destroynotify(XEvent *);
 341 void                    enternotify(XEvent *);
 342 void                    focusin(XEvent *);
 343 void                    mappingnotify(XEvent *);
 344 void                    maprequest(XEvent *);
 345 void                    propertynotify(XEvent *);
 346 void                    unmapnotify(XEvent *);
 347 void                    visibilitynotify(XEvent *);
 348
 349 void                    (*handler[LASTEvent])(XEvent *) = {
 350                                 [Expose] = expose,
 351                                 [KeyPress] = keypress,
 352                                 [ButtonPress] = buttonpress,
 353                                 [ConfigureRequest] = configurerequest,
 354                                 [ConfigureNotify] = configurenotify,
 355                                 [DestroyNotify] = destroynotify,
 356                                 [EnterNotify] = enternotify,
 357                                 [FocusIn] = focusin,
 358                                 [MappingNotify] = mappingnotify,
 359                                 [MapRequest] = maprequest,
 360                                 [PropertyNotify] = propertynotify,
 361                                 [UnmapNotify] = unmapnotify,
 362                                 [VisibilityNotify] = visibilitynotify,
 363 };
 364
 365 unsigned long
 366 name_to_color(char *colorname)
 367 {
 368         Colormap                cmap;
 369         Status                  status;
 370         XColor                  screen_def, exact_def;
 371         unsigned long           result = 0;
 372         char                    cname[32] = "#";
 373
 374         cmap = DefaultColormap(display, screens[0].idx);
 375         status = XAllocNamedColor(display, cmap, colorname,
 376             &screen_def, &exact_def);
 377         if (!status) {
 378                 strlcat(cname, colorname + 2, sizeof cname - 1);
 379                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 380                     &exact_def);
 381         }
 382         if (status)
 383                 result = screen_def.pixel;
 384         else
 385                 fprintf(stderr, "color '%s' not found.\n", colorname);
 386
 387         return (result);
 388 }
 389
 390 void
 391 setscreencolor(char *val, int i, int c)
 392 {
 393         if (i > 0 && i <= ScreenCount(display)) {
 394                 screens[i - 1].c[c].color = name_to_color(val);
 395                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 396                         errx(1, "strdup");
 397         } else if (i == -1) {
 398                 for (i = 0; i < ScreenCount(display); i++)
 399                         screens[i].c[c].color = name_to_color(val);
 400                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 401                                 errx(1, "strdup");
 402         } else
 403                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 404                     i, ScreenCount(display));
 405 }
 406
 407 void            new_region(struct swm_screen *, struct workspace *,
 408                             int, int, int, int);
 409
 410 void
 411 custom_region(char *val)
 412 {
 413         unsigned int                    sidx, x, y, w, h;
 414
 415         if (sscanf(val, "screen[%u]:%ux%u+%u+%u", &sidx, &w, &h, &x, &y) != 5)
 416                 errx(1, "invalid custom region, "
 417                     "should be 'screen[<n>]:<n>x<n>+<n>+<n>\n");
 418         if (sidx < 1 || sidx > ScreenCount(display))
 419                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 420                     sidx, ScreenCount(display));
 421         sidx--;
 422
 423         if (w < 1 || h < 1)
 424                 errx(1, "region %ux%u+%u+%u too small\n", w, h, x, y);
 425
 426         if (x  < 0 || x > DisplayWidth(display, sidx) ||
 427             y < 0 || y > DisplayHeight(display, sidx) ||
 428             w + x > DisplayWidth(display, sidx) ||
 429             h + y > DisplayHeight(display, sidx))
 430                 errx(1, "region %ux%u+%u+%u not within screen boundaries "
 431                     "(%ux%u)\n", w, h, x, y,
 432                     DisplayWidth(display, sidx), DisplayHeight(display, sidx));
 433
 434         new_region(&screens[sidx], NULL, x, y, w, h);
 435 }
 436
 437 int
 438 varmatch(char *var, char *name, int *index)
 439 {
 440         char                    *p, buf[5];
 441         int                     i;
 442
 443         i = strncmp(var, name, 255);
 444         if (index == NULL)
 445                 return (i);
 446
 447         *index = -1;
 448         if (i <= 0)
 449                 return (i);
 450         p = var + strlen(name);
 451         if (*p++ != '[')
 452                 return (i);
 453         bzero(buf, sizeof buf);
 454         i = 0;
 455         while (isdigit(*p) && i < sizeof buf)
 456                 buf[i++] = *p++;
 457         if (i == 0 || i >= sizeof buf || *p != ']')
 458                 return (1);
 459         *index = strtonum(buf, 0, 99, NULL);
 460         return (0);
 461 }
 462
 463 /* conf file stuff */
 464 #define SWM_CONF_WS     "\n= \t"
 465 #define SWM_CONF_FILE   "scrotwm.conf"
 466 int
 467 conf_load(char *filename)
 468 {
 469         FILE                    *config;
 470         char                    *line, *cp, *var, *val;
 471         size_t                  len, lineno = 0;
 472         int                     i, sc;
 473
 474         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 475
 476         if (filename == NULL)
 477                 return (1);
 478
 479         if ((config = fopen(filename, "r")) == NULL)
 480                 return (1);
 481
 482         for (sc = ScreenCount(display);;) {
 483                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 484                         if (feof(config))
 485                                 break;
 486                 cp = line;
 487                 cp += (long)strspn(cp, SWM_CONF_WS);
 488                 if (cp[0] == '\0') {
 489                         /* empty line */
 490                         free(line);
 491                         continue;
 492                 }
 493                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 494                         break;
 495                 cp += (long)strspn(cp, SWM_CONF_WS);
 496                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 497                         break;
 498
 499                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 500                 switch (var[0]) {
 501                 case 'b':
 502                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 503                                 bar_enabled = atoi(val);
 504                         else if (!varmatch(var, "bar_border", &i))
 505                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 506                         else if (!varmatch(var, "bar_color", &i))
 507                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 508                         else if (!varmatch(var, "bar_font_color", &i))
 509                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 510                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 511                                 asprintf(&bar_fonts[0], "%s", val);
 512                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 513                                 asprintf(&bar_argv[0], "%s", val);
 514                         else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 515                                 bar_delay = atoi(val);
 516                         else
 517                                 goto bad;
 518                         break;
 519
 520                 case 'c':
 521                         if (!varmatch(var, "color_focus", &i))
 522                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 523                         else if (!varmatch(var, "color_unfocus", &i))
 524                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 525                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 526                                 cycle_visible = atoi(val);
 527                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 528                                 cycle_visible = atoi(val);
 529                         else
 530                                 goto bad;
 531                         break;
 532
 533                 case 'd':
 534                         if (!strncmp(var, "dialog_ratio",
 535                             strlen("dialog_ratio"))) {
 536                                 dialog_ratio = atof(val);
 537                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 538                                         dialog_ratio = .6;
 539                         } else
 540                                 goto bad;
 541                         break;
 542
 543                 case 'r':
 544                         if (!strncmp(var, "region", strlen("region")))
 545                                 custom_region(val);
 546                         else
 547                                 goto bad;
 548                         break;
 549
 550                 case 's':
 551                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 552                                 asprintf(&spawn_term[0], "%s", val);
 553                         if (!strncmp(var, "screenshot_enabled",
 554                             strlen("screenshot_enabled")))
 555                                 ss_enabled = atoi(val);
 556                         if (!strncmp(var, "screenshot_app",
 557                             strlen("screenshot_app")))
 558                                 asprintf(&spawn_screenshot[0], "%s", val);
 559                         break;
 560                 default:
 561                         goto bad;
 562                 }
 563                 free(line);
 564         }
 565
 566         fclose(config);
 567         return (0);
 568
 569 bad:
 570         errx(1, "invalid conf file entry: %s=%s", var, val);
 571 }
 572
 573 void
 574 socket_setnonblock(int fd)
 575 {
 576         int                     flags;
 577
 578         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 579                 err(1, "fcntl F_GETFL");
 580         flags |= O_NONBLOCK;
 581         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 582                 err(1, "fcntl F_SETFL");
 583 }
 584
 585 void
 586 bar_print(struct swm_region *r, char *s)
 587 {
 588         XClearWindow(display, r->bar_window);
 589         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 590         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 591             strlen(s));
 592 }
 593
 594 void
 595 bar_extra_stop(void)
 596 {
 597         if (bar_pipe[0]) {
 598                 close(bar_pipe[0]);
 599                 bzero(bar_pipe, sizeof bar_pipe);
 600         }
 601         if (bar_pid) {
 602                 kill(bar_pid, SIGTERM);
 603                 bar_pid = 0;
 604         }
 605         strlcpy(bar_ext, "", sizeof bar_ext);
 606         bar_extra = 0;
 607 }
 608
 609 void
 610 bar_update(void)
 611 {
 612         time_t                  tmt;
 613         struct tm               tm;
 614         struct swm_region       *r;
 615         int                     i, x;
 616         size_t                  len;
 617         char                    s[SWM_BAR_MAX];
 618         char                    loc[SWM_BAR_MAX];
 619         char                    *b;
 620
 621         if (bar_enabled == 0)
 622                 return;
 623
 624         if (bar_extra && bar_extra_running) {
 625                 /* ignore short reads; it'll correct itself */
 626                 while ((b = fgetln(stdin, &len)) != NULL)
 627                         if (b && b[len - 1] == '\n') {
 628                                 b[len - 1] = '\0';
 629                                 strlcpy(bar_ext, b, sizeof bar_ext);
 630                         }
 631                 if (b == NULL && errno != EAGAIN) {
 632                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 633                             errno, strerror(errno));
 634                         bar_extra_stop();
 635                 }
 636         } else
 637                 strlcpy(bar_ext, "", sizeof bar_ext);
 638
 639         time(&tmt);
 640         localtime_r(&tmt, &tm);
 641         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 642         for (i = 0; i < ScreenCount(display); i++) {
 643                 x = 1;
 644                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 645                         snprintf(loc, sizeof loc, "%s     %d:%d    %s    %s",
 646                             s, x++, r->ws->idx + 1, bar_ext, bar_vertext);
 647                         bar_print(r, loc);
 648                 }
 649         }
 650         XSync(display, False);
 651         alarm(bar_delay);
 652 }
 653
 654 void
 655 bar_signal(int sig)
 656 {
 657         bar_alarm = 1;
 658 }
 659
 660 void
 661 bar_toggle(struct swm_region *r, union arg *args)
 662 {
 663         struct swm_region       *tmpr;
 664         int                     i, j, sc = ScreenCount(display);
 665
 666         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 667
 668         if (bar_enabled) {
 669                 for (i = 0; i < sc; i++)
 670                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 671                                 XUnmapWindow(display, tmpr->bar_window);
 672         } else {
 673                 for (i = 0; i < sc; i++)
 674                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 675                                 XMapRaised(display, tmpr->bar_window);
 676         }
 677         bar_enabled = !bar_enabled;
 678         XSync(display, False);
 679         for (i = 0; i < sc; i++)
 680                 for (j = 0; j < SWM_WS_MAX; j++)
 681                         screens[i].ws[j].restack = 1;
 682
 683         stack();
 684         /* must be after stack */
 685         for (i = 0; i < sc; i++)
 686                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 687                         bar_update();
 688 }
 689
 690 void
 691 bar_refresh(void)
 692 {
 693         XSetWindowAttributes    wa;
 694         struct swm_region       *r;
 695         int                     i;
 696
 697         /* do this here because the conf file is in memory */
 698         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 699                 /* launch external status app */
 700                 bar_extra_running = 1;
 701                 if (pipe(bar_pipe) == -1)
 702                         err(1, "pipe error");
 703                 socket_setnonblock(bar_pipe[0]);
 704                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 705                 if (dup2(bar_pipe[0], 0) == -1)
 706                         errx(1, "dup2");
 707                 if (dup2(bar_pipe[1], 1) == -1)
 708                         errx(1, "dup2");
 709                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 710                         err(1, "could not disable SIGPIPE");
 711                 switch (bar_pid = fork()) {
 712                 case -1:
 713                         err(1, "cannot fork");
 714                         break;
 715                 case 0: /* child */
 716                         close(bar_pipe[0]);
 717                         execvp(bar_argv[0], bar_argv);
 718                         err(1, "%s external app failed", bar_argv[0]);
 719                         break;
 720                 default: /* parent */
 721                         close(bar_pipe[1]);
 722                         break;
 723                 }
 724         }
 725
 726         bzero(&wa, sizeof wa);
 727         for (i = 0; i < ScreenCount(display); i++)
 728                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 729                         wa.border_pixel =
 730                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 731                         wa.background_pixel =
 732                             screens[i].c[SWM_S_COLOR_BAR].color;
 733                         XChangeWindowAttributes(display, r->bar_window,
 734                             CWBackPixel | CWBorderPixel, &wa);
 735                 }
 736         bar_update();
 737 }
 738
 739 void
 740 bar_setup(struct swm_region *r)
 741 {
 742         int                     i;
 743
 744         for (i = 0; bar_fonts[i] != NULL; i++) {
 745                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 746                 if (bar_fs) {
 747                         bar_fidx = i;
 748                         break;
 749                 }
 750         }
 751         if (bar_fonts[i] == NULL)
 752                         errx(1, "couldn't load font");
 753         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 754
 755         r->bar_window = XCreateSimpleWindow(display,
 756             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 757             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 758             r->s->c[SWM_S_COLOR_BAR].color);
 759         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 760         XSetFont(display, bar_gc, bar_fs->fid);
 761         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 762         if (bar_enabled)
 763                 XMapRaised(display, r->bar_window);
 764         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 765
 766         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 767                 err(1, "could not install bar_signal");
 768         bar_refresh();
 769 }
 770
 771 void
 772 version(struct swm_region *r, union arg *args)
 773 {
 774         bar_version = !bar_version;
 775         if (bar_version)
 776                 strlcpy(bar_vertext, cvstag, sizeof bar_vertext);
 777         else
 778                 strlcpy(bar_vertext, "", sizeof bar_vertext);
 779         bar_update();
 780 }
 781
 782 void
 783 config_win(struct ws_win *win)
 784 {
 785         XConfigureEvent         ce;
 786
 787         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 788             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 789         ce.type = ConfigureNotify;
 790         ce.display = display;
 791         ce.event = win->id;
 792         ce.window = win->id;
 793         ce.x = win->g.x;
 794         ce.y = win->g.y;
 795         ce.width = win->g.w;
 796         ce.height = win->g.h;
 797         ce.border_width = 1; /* XXX store this! */
 798         ce.above = None;
 799         ce.override_redirect = False;
 800         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 801 }
 802
 803 int
 804 count_win(struct workspace *ws, int count_transient)
 805 {
 806         struct ws_win           *win;
 807         int                     count = 0;
 808
 809         TAILQ_FOREACH(win, &ws->winlist, entry) {
 810                 if (count_transient == 0 && win->floating)
 811                         continue;
 812                 if (count_transient == 0 && win->transient)
 813                         continue;
 814                 count++;
 815         }
 816         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 817
 818         return (count);
 819 }
 820
 821 void
 822 quit(struct swm_region *r, union arg *args)
 823 {
 824         DNPRINTF(SWM_D_MISC, "quit\n");
 825         running = 0;
 826 }
 827
 828 void
 829 unmap_all(void)
 830 {
 831         struct ws_win           *win;
 832         int                     i, j;
 833
 834         for (i = 0; i < ScreenCount(display); i++)
 835                 for (j = 0; j < SWM_WS_MAX; j++)
 836                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 837                                 XUnmapWindow(display, win->id);
 838 }
 839
 840 void
 841 restart(struct swm_region *r, union arg *args)
 842 {
 843         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 844
 845         /* disable alarm because the following code may not be interrupted */
 846         alarm(0);
 847         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 848                 errx(1, "can't disable alarm");
 849
 850         bar_extra_stop();
 851         bar_extra = 1;
 852         unmap_all();
 853         XCloseDisplay(display);
 854         execvp(start_argv[0], start_argv);
 855         fprintf(stderr, "execvp failed\n");
 856         perror(" failed");
 857         quit(NULL, NULL);
 858 }
 859
 860 struct swm_region *
 861 root_to_region(Window root)
 862 {
 863         struct swm_region       *r;
 864         Window                  rr, cr;
 865         int                     i, x, y, wx, wy;
 866         unsigned int            mask;
 867
 868         for (i = 0; i < ScreenCount(display); i++)
 869                 if (screens[i].root == root)
 870                         break;
 871
 872         if (XQueryPointer(display, screens[i].root,
 873             &rr, &cr, &x, &y, &wx, &wy, &mask) == False) {
 874                 /* if we can't query the pointer, grab the first region */
 875                 r = TAILQ_FIRST(&screens[i].rl);
 876         } else {
 877                 /* otherwise, choose a region based on pointer location */
 878                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 879                         if (x >= X(r) && x <= X(r) + WIDTH(r) &&
 880                             y >= Y(r) && y <= Y(r) + HEIGHT(r))
 881                                 break;
 882                 }
 883
 884                 if (r == NULL)
 885                         r = TAILQ_FIRST(&screens[i].rl);
 886         }
 887         return (r);
 888 }
 889
 890 struct ws_win *
 891 find_window(Window id)
 892 {
 893         struct ws_win           *win;
 894         int                     i, j;
 895
 896         for (i = 0; i < ScreenCount(display); i++)
 897                 for (j = 0; j < SWM_WS_MAX; j++)
 898                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 899                                 if (id == win->id)
 900                                         return (win);
 901         return (NULL);
 902 }
 903
 904 void
 905 spawn(struct swm_region *r, union arg *args)
 906 {
 907         char                    *ret;
 908         int                     si;
 909
 910         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 911         /*
 912          * The double-fork construct avoids zombie processes and keeps the code
 913          * clean from stupid signal handlers.
 914          */
 915         if (fork() == 0) {
 916                 if (fork() == 0) {
 917                         if (display)
 918                                 close(ConnectionNumber(display));
 919                         setenv("LD_PRELOAD", SWM_LIB, 1);
 920                         if (asprintf(&ret, "%d", r->ws->idx)) {
 921                                 setenv("_SWM_WS", ret, 1);
 922                                 free(ret);
 923                         }
 924                         if (asprintf(&ret, "%d", getpid())) {
 925                                 setenv("_SWM_PID", ret, 1);
 926                                 free(ret);
 927                         }
 928                         setsid();
 929                         /* kill stdin, mplayer, ssh-add etc. need that */
 930                         si = open("/dev/null", O_RDONLY, 0);
 931                         if (si == -1)
 932                                 err(1, "open /dev/null");
 933                         if (dup2(si, 0) == -1)
 934                                 err(1, "dup2 /dev/null");
 935                         execvp(args->argv[0], args->argv);
 936                         fprintf(stderr, "execvp failed\n");
 937                         perror(" failed");
 938                 }
 939                 exit(0);
 940         }
 941         wait(0);
 942 }
 943
 944 void
 945 spawnmenu(struct swm_region *r, union arg *args)
 946 {
 947         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
 948
 949         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
 950         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
 951         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
 952         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
 953         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
 954
 955         spawn(r, args);
 956 }
 957
 958 void
 959 unfocus_all(void)
 960 {
 961         struct ws_win           *win;
 962         int                     i, j;
 963
 964         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
 965
 966         for (i = 0; i < ScreenCount(display); i++)
 967                 for (j = 0; j < SWM_WS_MAX; j++)
 968                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
 969                                 if (win->ws->r == NULL)
 970                                         continue;
 971                                 grabbuttons(win, 0);
 972                                 XSetWindowBorder(display, win->id,
 973                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
 974                                 win->got_focus = 0;
 975                                 win->ws->focus = NULL;
 976                                 cur_focus = NULL;
 977                         }
 978 }
 979
 980 void
 981 focus_win(struct ws_win *win)
 982 {
 983         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
 984
 985         if (win == NULL)
 986                 return;
 987
 988         unfocus_all();
 989         win->ws->focus = win;
 990         if (win->ws->r != NULL) {
 991                 cur_focus = win;
 992                 if (!win->got_focus) {
 993                         XSetWindowBorder(display, win->id,
 994                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
 995                         grabbuttons(win, 1);
 996                 }
 997                 win->got_focus = 1;
 998                 XSetInputFocus(display, win->id,
 999                     RevertToPointerRoot, CurrentTime);
1000         }
1001 }
1002
1003 void
1004 switchws(struct swm_region *r, union arg *args)
1005 {
1006         int                     wsid = args->id;
1007         struct swm_region       *this_r, *other_r;
1008         struct ws_win           *win;
1009         struct workspace        *new_ws, *old_ws;
1010
1011         this_r = r;
1012         old_ws = this_r->ws;
1013         new_ws = &this_r->s->ws[wsid];
1014
1015         DNPRINTF(SWM_D_WS, "switchws screen[%d]:%dx%d+%d+%d: "
1016             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
1017             old_ws->idx, wsid);
1018
1019         if (new_ws == old_ws)
1020                 return;
1021
1022         other_r = new_ws->r;
1023         if (!other_r) {
1024                 /* if the other workspace is hidden, switch windows */
1025                 /* map new window first to prevent ugly blinking */
1026                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
1027                         XMapRaised(display, win->id);
1028
1029                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
1030                         XUnmapWindow(display, win->id);
1031                 old_ws->r = NULL;
1032                 old_ws->restack = 1;
1033         } else {
1034                 other_r->ws = old_ws;
1035                 old_ws->r = other_r;
1036         }
1037         this_r->ws = new_ws;
1038         new_ws->r = this_r;
1039
1040         ignore_enter = 1;
1041         /* set focus */
1042         if (new_ws->focus)
1043                 focus_win(new_ws->focus);
1044         stack();
1045         bar_update();
1046 }
1047
1048 void
1049 cyclews(struct swm_region *r, union arg *args)
1050 {
1051         union                   arg a;
1052         struct swm_screen       *s = r->s;
1053
1054         DNPRINTF(SWM_D_WS, "cyclews id %d "
1055             "in screen[%d]:%dx%d+%d+%d ws %d\n", args->id,
1056             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1057
1058         a.id = r->ws->idx;
1059         do {
1060                 switch (args->id) {
1061                 case SWM_ARG_ID_CYCLEWS_UP:
1062                         if (a.id < SWM_WS_MAX - 1)
1063                                 a.id++;
1064                         else
1065                                 a.id = 0;
1066                         break;
1067                 case SWM_ARG_ID_CYCLEWS_DOWN:
1068                         if (a.id > 0)
1069                                 a.id--;
1070                         else
1071                                 a.id = SWM_WS_MAX - 1;
1072                         break;
1073                 default:
1074                         return;
1075                 };
1076
1077                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
1078                         continue;
1079                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
1080                         continue;
1081
1082                 switchws(r, &a);
1083         } while (a.id != r->ws->idx);
1084 }
1085
1086 void
1087 cyclescr(struct swm_region *r, union arg *args)
1088 {
1089         struct swm_region       *rr;
1090         int                     i;
1091
1092         i = r->s->idx;
1093         switch (args->id) {
1094         case SWM_ARG_ID_CYCLESC_UP:
1095                 rr = TAILQ_NEXT(r, entry);
1096                 if (rr == NULL)
1097                         rr = TAILQ_FIRST(&screens[i].rl);
1098                 break;
1099         case SWM_ARG_ID_CYCLESC_DOWN:
1100                 rr = TAILQ_PREV(r, swm_region_list, entry);
1101                 if (rr == NULL)
1102                         rr = TAILQ_LAST(&screens[i].rl, swm_region_list);
1103                 break;
1104         default:
1105                 return;
1106         };
1107         unfocus_all();
1108         XSetInputFocus(display, PointerRoot, RevertToPointerRoot, CurrentTime);
1109         XWarpPointer(display, None, rr->s[i].root, 0, 0, 0, 0, rr->g.x,
1110             rr->g.y + bar_enabled ? bar_height : 0);
1111 }
1112
1113 void
1114 swapwin(struct swm_region *r, union arg *args)
1115 {
1116         struct ws_win           *target;
1117         struct ws_win_list      *wl;
1118
1119
1120         DNPRINTF(SWM_D_WS, "swapwin id %d "
1121             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
1122             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1123         if (cur_focus == NULL)
1124                 return;
1125
1126         wl = &cur_focus->ws->winlist;
1127
1128         switch (args->id) {
1129         case SWM_ARG_ID_SWAPPREV:
1130                 target = TAILQ_PREV(cur_focus, ws_win_list, entry);
1131                 TAILQ_REMOVE(wl, cur_focus, entry);
1132                 if (target == NULL)
1133                         TAILQ_INSERT_TAIL(wl, cur_focus, entry);
1134                 else
1135                         TAILQ_INSERT_BEFORE(target, cur_focus, entry);
1136                 break;
1137         case SWM_ARG_ID_SWAPNEXT:
1138                 target = TAILQ_NEXT(cur_focus, entry);
1139                 TAILQ_REMOVE(wl, cur_focus, entry);
1140                 if (target == NULL)
1141                         TAILQ_INSERT_HEAD(wl, cur_focus, entry);
1142                 else
1143                         TAILQ_INSERT_AFTER(wl, target, cur_focus, entry);
1144                 break;
1145         case SWM_ARG_ID_SWAPMAIN:
1146                 target = TAILQ_FIRST(wl);
1147                 if (target == cur_focus)
1148                         return;
1149                 TAILQ_REMOVE(wl, target, entry);
1150                 TAILQ_INSERT_BEFORE(cur_focus, target, entry);
1151                 TAILQ_REMOVE(wl, cur_focus, entry);
1152                 TAILQ_INSERT_HEAD(wl, cur_focus, entry);
1153                 break;
1154         default:
1155                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
1156                 return;
1157         }
1158
1159         ignore_enter = 2;
1160         stack();
1161 }
1162
1163 void
1164 focus(struct swm_region *r, union arg *args)
1165 {
1166         struct ws_win           *winfocus, *winlostfocus;
1167         struct ws_win_list      *wl;
1168
1169         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
1170         if (cur_focus == NULL)
1171                 return;
1172
1173         wl = &cur_focus->ws->winlist;
1174
1175         winlostfocus = cur_focus;
1176
1177         switch (args->id) {
1178         case SWM_ARG_ID_FOCUSPREV:
1179                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1180                 if (winfocus == NULL)
1181                         winfocus = TAILQ_LAST(wl, ws_win_list);
1182                 break;
1183
1184         case SWM_ARG_ID_FOCUSNEXT:
1185                 winfocus = TAILQ_NEXT(cur_focus, entry);
1186                 if (winfocus == NULL)
1187                         winfocus = TAILQ_FIRST(wl);
1188                 break;
1189
1190         case SWM_ARG_ID_FOCUSMAIN:
1191                 winfocus = TAILQ_FIRST(wl);
1192                 break;
1193
1194         default:
1195                 return;
1196         }
1197
1198         if (winfocus == winlostfocus || winfocus == NULL)
1199                 return;
1200
1201         XMapRaised(display, winfocus->id);
1202         focus_win(winfocus);
1203         XSync(display, False);
1204 }
1205
1206 void
1207 cycle_layout(struct swm_region *r, union arg *args)
1208 {
1209         struct workspace        *ws = r->ws;
1210
1211         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1212
1213         ws->cur_layout++;
1214         if (ws->cur_layout->l_stack == NULL)
1215                 ws->cur_layout = &layouts[0];
1216         ignore_enter = 1;
1217         stack();
1218 }
1219
1220 void
1221 stack_config(struct swm_region *r, union arg *args)
1222 {
1223         struct workspace        *ws = r->ws;
1224
1225         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1226             args->id, ws->idx);
1227
1228         if (ws->cur_layout->l_config != NULL)
1229                 ws->cur_layout->l_config(ws, args->id);
1230
1231         if (args->id != SWM_ARG_ID_STACKINIT);
1232                 stack();
1233 }
1234
1235 void
1236 stack(void) {
1237         struct swm_geometry     g;
1238         struct swm_region       *r;
1239         int                     i, j;
1240
1241         DNPRINTF(SWM_D_STACK, "stack\n");
1242
1243         for (i = 0; i < ScreenCount(display); i++) {
1244                 j = 0;
1245                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1246                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1247                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1248
1249                         /* start with screen geometry, adjust for bar */
1250                         g = r->g;
1251                         g.w -= 2;
1252                         g.h -= 2;
1253                         if (bar_enabled) {
1254                                 g.y += bar_height;
1255                                 g.h -= bar_height;
1256                         }
1257
1258                         r->ws->restack = 0;
1259                         r->ws->cur_layout->l_stack(r->ws, &g);
1260                 }
1261         }
1262         XSync(display, False);
1263 }
1264
1265 void
1266 stack_floater(struct ws_win *win, struct swm_region *r)
1267 {
1268         unsigned int            mask;
1269         XWindowChanges          wc;
1270
1271         bzero(&wc, sizeof wc);
1272         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1273         wc.border_width = 1;
1274         if (win->transient) {
1275                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1276                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1277         }
1278         wc.width = win->g.w;
1279         wc.height = win->g.h;
1280         if (win->manual) {
1281                 wc.x = win->g.x;
1282                 wc.y = win->g.y;
1283         } else {
1284                 wc.x = (WIDTH(r) - win->g.w) / 2;
1285                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1286         }
1287
1288         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1289             win->id, wc.x, wc.y, wc.width, wc.height);
1290
1291         XConfigureWindow(display, win->id, mask, &wc);
1292 }
1293
1294 #define SWAPXY(g)       do {                            \
1295         int tmp;                                        \
1296         tmp = (g)->y; (g)->y = (g)->x; (g)->x = tmp;    \
1297         tmp = (g)->h; (g)->h = (g)->w; (g)->w = tmp;    \
1298 } while (0)
1299 void
1300 stack_master(struct workspace *ws, struct swm_geometry *g, int rot, int flip)
1301 {
1302         XWindowChanges          wc;
1303         struct swm_geometry     win_g, r_g = *g;
1304         struct ws_win           *win, *winfocus;
1305         int                     i, j, w_inc, h_inc, w_base, h_base;
1306         int                     hrh, extra, h_slice, last_h = 0;
1307         int                     split, colno, winno, mwin, msize, mscale;
1308         int                     remain, missing, v_slice;;
1309         unsigned int            mask;
1310
1311         DNPRINTF(SWM_D_STACK, "stack_master: workspace: %d\n rot=%s flip=%s",
1312             ws->idx, rot ? "yes" : "no", flip ? "yes" : "no");
1313
1314         if ((winno = count_win(ws, 0)) == 0)
1315                 return;
1316
1317         if (ws->focus == NULL)
1318                 ws->focus = TAILQ_FIRST(&ws->winlist);
1319         winfocus = cur_focus ? cur_focus : ws->focus;
1320
1321         win = TAILQ_FIRST(&ws->winlist);
1322         if (rot) {
1323                 w_inc = win->sh.width_inc;
1324                 w_base = win->sh.base_width;
1325                 mwin = ws->l_state.horizontal_mwin;
1326                 mscale = ws->l_state.horizontal_msize;
1327                 SWAPXY(&r_g);
1328         } else {
1329                 w_inc = win->sh.height_inc;
1330                 w_base = win->sh.base_height;
1331                 mwin = ws->l_state.vertical_mwin;
1332                 mscale = ws->l_state.vertical_msize;
1333         }
1334         win_g = r_g;
1335
1336         h_slice = r_g.h / SWM_H_SLICE;
1337         if (mwin && winno > mwin) {
1338                 v_slice = r_g.w / SWM_V_SLICE;
1339
1340                 split = mwin;
1341                 colno = split;
1342                 msize = v_slice * mscale;
1343
1344                 if (w_inc > 1 && w_inc < v_slice) {
1345                         /* adjust for window's requested size increment */
1346                         remain = (win_g.w - w_base) % w_inc;
1347                         missing = w_inc - remain;
1348
1349                         if (missing <= extra || j == 0) {
1350                                 extra -= missing;
1351                                 win_g.w += missing;
1352                         } else {
1353                                 win_g.w -= remain;
1354                                 extra += remain;
1355                         }
1356                 }
1357
1358                 win_g.w = msize;
1359                 if (flip)
1360                         win_g.x += r_g.w - msize;
1361         } else {
1362                 colno = winno;
1363                 split = 0;
1364         }
1365         hrh = r_g.h / colno;
1366         extra = r_g.h - (colno * hrh);
1367         win_g.h = hrh - 2;
1368
1369         /*  stack all the tiled windows */
1370         i = j = 0;
1371         TAILQ_FOREACH(win, &ws->winlist, entry) {
1372                 if (win->transient != 0 || win->floating != 0)
1373                         continue;
1374
1375                 if (split && i == split) {
1376                         colno = winno - split;
1377                         hrh = (r_g.h / colno);
1378                         extra = r_g.h - (colno * hrh);
1379                         if (flip)
1380                                 win_g.x = r_g.x;
1381                         else
1382                                 win_g.x += msize + 2;
1383                         win_g.w = r_g.w - (msize + 2);
1384                         j = 0;
1385                 }
1386                 win_g.h = hrh - 2;
1387                 if (rot) {
1388                         h_inc = win->sh.width_inc;
1389                         h_base = win->sh.base_width;
1390                 } else {
1391                         h_inc = win->sh.height_inc;
1392                         h_base = win->sh.base_height;
1393                 }
1394                 if (j == colno - 1) {
1395                         win_g.h = hrh + extra;
1396                 } else if (h_inc > 1 && h_inc < h_slice) {
1397                         /* adjust for window's requested size increment */
1398                         remain = (win_g.h - h_base) % h_inc;
1399                         missing = h_inc - remain;
1400
1401                         if (missing <= extra || j == 0) {
1402                                 extra -= missing;
1403                                 win_g.h += missing;
1404                         } else {
1405                                 win_g.h -= remain;
1406                                 extra += remain;
1407                         }
1408                 }
1409
1410                 if (j == 0)
1411                         win_g.y = r_g.y;
1412                 else
1413                         win_g.y += last_h + 2;
1414
1415                 bzero(&wc, sizeof wc);
1416                 wc.border_width = 1;
1417                 if (rot) {
1418                         win->g.x = wc.x = win_g.y;
1419                         win->g.y = wc.y = win_g.x;
1420                         win->g.w = wc.width = win_g.h;
1421                         win->g.h = wc.height = win_g.w;
1422                 } else {
1423                         win->g.x = wc.x = win_g.x;
1424                         win->g.y = wc.y = win_g.y;
1425                         win->g.w = wc.width = win_g.w;
1426                         win->g.h = wc.height = win_g.h;
1427                 }
1428                 mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1429                 XConfigureWindow(display, win->id, mask, &wc);
1430                 XMapRaised(display, win->id);
1431                 /*
1432                 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);
1433                 */
1434
1435                 last_h = win_g.h;
1436                 i++;
1437                 j++;
1438         }
1439
1440         /* now, stack all the floaters and transients */
1441         TAILQ_FOREACH(win, &ws->winlist, entry) {
1442                 if (win->transient == 0 && win->floating == 0)
1443                         continue;
1444
1445                 stack_floater(win, ws->r);
1446                 XMapRaised(display, win->id);
1447         }
1448
1449         if (winfocus)
1450                 focus_win(winfocus); /* has to be done outside of the loop */
1451 }
1452
1453 void
1454 vertical_config(struct workspace *ws, int id)
1455 {
1456         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1457
1458         switch (id) {
1459         case SWM_ARG_ID_STACKRESET:
1460         case SWM_ARG_ID_STACKINIT:
1461                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1462                 ws->l_state.vertical_mwin = 1;
1463                 break;
1464         case SWM_ARG_ID_MASTERSHRINK:
1465                 if (ws->l_state.vertical_msize > 1)
1466                         ws->l_state.vertical_msize--;
1467                 break;
1468         case SWM_ARG_ID_MASTERGROW:
1469                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1470                         ws->l_state.vertical_msize++;
1471                 break;
1472         case SWM_ARG_ID_MASTERADD:
1473                 ws->l_state.vertical_mwin++;
1474                 break;
1475         case SWM_ARG_ID_MASTERDEL:
1476                 if (ws->l_state.vertical_mwin > 0)
1477                         ws->l_state.vertical_mwin--;
1478                 break;
1479         default:
1480                 return;
1481         }
1482 }
1483
1484 void
1485 vertical_stack(struct workspace *ws, struct swm_geometry *g)
1486 {
1487         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1488
1489         stack_master(ws, g, 0, 0);
1490 }
1491
1492 void
1493 horizontal_config(struct workspace *ws, int id)
1494 {
1495         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1496
1497         switch (id) {
1498         case SWM_ARG_ID_STACKRESET:
1499         case SWM_ARG_ID_STACKINIT:
1500                 ws->l_state.horizontal_mwin = 1;
1501                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1502                 break;
1503         case SWM_ARG_ID_MASTERSHRINK:
1504                 if (ws->l_state.horizontal_msize > 1)
1505                         ws->l_state.horizontal_msize--;
1506                 break;
1507         case SWM_ARG_ID_MASTERGROW:
1508                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1509                         ws->l_state.horizontal_msize++;
1510                 break;
1511         case SWM_ARG_ID_MASTERADD:
1512                 ws->l_state.horizontal_mwin++;
1513                 break;
1514         case SWM_ARG_ID_MASTERDEL:
1515                 if (ws->l_state.horizontal_mwin > 0)
1516                         ws->l_state.horizontal_mwin--;
1517                 break;
1518         default:
1519                 return;
1520         }
1521 }
1522
1523 void
1524 horizontal_stack(struct workspace *ws, struct swm_geometry *g)
1525 {
1526         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1527
1528         stack_master(ws, g, 1, 0);
1529 }
1530
1531 /* fullscreen view */
1532 void
1533 max_stack(struct workspace *ws, struct swm_geometry *g) {
1534         XWindowChanges          wc;
1535         struct swm_geometry     gg = *g;
1536         struct ws_win           *win, *winfocus;
1537         unsigned int            mask;
1538
1539         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1540
1541         if (count_win(ws, 0) == 0)
1542                 return;
1543
1544         if (ws->focus == NULL)
1545                 ws->focus = TAILQ_FIRST(&ws->winlist);
1546         winfocus = cur_focus ? cur_focus : ws->focus;
1547
1548         TAILQ_FOREACH(win, &ws->winlist, entry) {
1549                 if (win->transient != 0 || win->floating != 0) {
1550                         if (win == ws->focus) {
1551                                 /* XXX maximize? */
1552                                 stack_floater(win, ws->r);
1553                                 XMapRaised(display, win->id);
1554                         } else
1555                                 XUnmapWindow(display, win->id);
1556                 } else {
1557                         bzero(&wc, sizeof wc);
1558                         wc.border_width = 1;
1559                         win->g.x = wc.x = gg.x;
1560                         win->g.y = wc.y = gg.y;
1561                         win->g.w = wc.width = gg.w;
1562                         win->g.h = wc.height = gg.h;
1563                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1564                         XConfigureWindow(display, win->id, mask, &wc);
1565
1566                         if (win == ws->focus) {
1567                                 XMapRaised(display, win->id);
1568                         } else
1569                                 XUnmapWindow(display, win->id);
1570                 }
1571         }
1572
1573         if (winfocus)
1574                 focus_win(winfocus); /* has to be done outside of the loop */
1575 }
1576
1577 void
1578 send_to_ws(struct swm_region *r, union arg *args)
1579 {
1580         int                     wsid = args->id;
1581         struct ws_win           *win = cur_focus;
1582         struct workspace        *ws, *nws;
1583         Atom                    ws_idx_atom = 0;
1584         unsigned char           ws_idx_str[SWM_PROPLEN];
1585
1586         if (win == NULL)
1587                 return;
1588
1589         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1590
1591         ws = win->ws;
1592         nws = &win->s->ws[wsid];
1593
1594         XUnmapWindow(display, win->id);
1595
1596         /* find a window to focus */
1597         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1598         if (ws->focus == NULL)
1599                 ws->focus = TAILQ_FIRST(&ws->winlist);
1600         if (ws->focus == win)
1601                 ws->focus = NULL;
1602
1603         TAILQ_REMOVE(&ws->winlist, win, entry);
1604
1605         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1606         win->ws = nws;
1607
1608         /* Try to update the window's workspace property */
1609         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1610         if (ws_idx_atom &&
1611             snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
1612                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1613                     ws_idx_str);
1614                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1615                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1616         }
1617
1618         if (count_win(nws, 1) == 1)
1619                 nws->focus = win;
1620         ws->restack = 1;
1621         nws->restack = 1;
1622
1623         stack();
1624 }
1625
1626 void
1627 wkill(struct swm_region *r, union arg *args)
1628 {
1629         DNPRINTF(SWM_D_MISC, "wkill\n");
1630         if(r->ws->focus != NULL)
1631                 XKillClient(display, r->ws->focus->id);
1632 }
1633
1634 void
1635 screenshot(struct swm_region *r, union arg *args)
1636 {
1637         union arg                       a;
1638
1639         DNPRINTF(SWM_D_MISC, "screenshot\n");
1640
1641         if (ss_enabled == 0)
1642                 return;
1643
1644         switch (args->id) {
1645         case SWM_ARG_ID_SS_ALL:
1646                 spawn_screenshot[1] = "full";
1647                 break;
1648         case SWM_ARG_ID_SS_WINDOW:
1649                 spawn_screenshot[1] = "window";
1650                 break;
1651         default:
1652                 return;
1653         }
1654         a.argv = spawn_screenshot;
1655         spawn(r, &a);
1656 }
1657
1658 void
1659 floating_toggle(struct swm_region *r, union arg *args)
1660 {
1661         struct ws_win   *win = cur_focus;
1662
1663         if (win == NULL)
1664                 return;
1665
1666         win->floating = !win->floating;
1667         win->manual = 0;
1668         stack();
1669         focus_win(win);
1670 }
1671
1672 /* key definitions */
1673 struct key {
1674         unsigned int            mod;
1675         KeySym                  keysym;
1676         void                    (*func)(struct swm_region *r, union arg *);
1677         union arg               args;
1678 } keys[] = {
1679         /* modifier             key     function                argument */
1680         { MODKEY,               XK_space,       cycle_layout,   {0} },
1681         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1682         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1683         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1684         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1685         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1686         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1687         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1688         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1689         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1690         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1691         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1692         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1693         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1694         { MODKEY,               XK_q,           restart,        {0} },
1695         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1696         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1697         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1698         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1699         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1700         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1701         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1702         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1703         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1704         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1705         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1706         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1707         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1708         { MODKEY | ShiftMask,   XK_Right,       cyclescr,       {.id = SWM_ARG_ID_CYCLESC_UP} },
1709         { MODKEY | ShiftMask,   XK_Left,        cyclescr,       {.id = SWM_ARG_ID_CYCLESC_DOWN} },
1710         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1711         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1712         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1713         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1714         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1715         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1716         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1717         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1718         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1719         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1720         { MODKEY,               XK_b,           bar_toggle,     {0} },
1721         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1722         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1723         { MODKEY | ShiftMask,   XK_x,           wkill,          {0} },
1724         { MODKEY,               XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_ALL} },
1725         { MODKEY | ShiftMask,   XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_WINDOW} },
1726         { MODKEY,               XK_t,           floating_toggle,{0} },
1727         { MODKEY | ShiftMask,   XK_v,           version,        {0} },
1728         { MODKEY | ShiftMask,   XK_Delete,      spawn,          {.argv = spawn_lock} },
1729 };
1730
1731 void
1732 resize_window(struct ws_win *win, int center)
1733 {
1734         unsigned int            mask;
1735         XWindowChanges          wc;
1736         struct swm_region       *r;
1737
1738         r = root_to_region(win->wa.root);
1739         bzero(&wc, sizeof wc);
1740         mask = CWBorderWidth | CWWidth | CWHeight;
1741         wc.border_width = 1;
1742         wc.width = win->g.w;
1743         wc.height = win->g.h;
1744         if (center == SWM_ARG_ID_CENTER) {
1745                 wc.x = (WIDTH(r) - win->g.w) / 2;
1746                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1747                 mask |= CWX | CWY;
1748         }
1749
1750         DNPRINTF(SWM_D_STACK, "resize_window: win %lu x %d y %d w %d h %d\n",
1751             win->id, wc.x, wc.y, wc.width, wc.height);
1752
1753         XConfigureWindow(display, win->id, mask, &wc);
1754         config_win(win);
1755 }
1756
1757 void
1758 resize(struct ws_win *win, union arg *args)
1759 {
1760         XEvent                  ev;
1761         Time                    time = 0;
1762
1763         DNPRINTF(SWM_D_MOUSE, "resize: win %lu floating %d trans %d\n",
1764             win->id, win->floating, win->transient);
1765
1766         if (!(win->transient != 0 || win->floating != 0))
1767                 return;
1768
1769         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
1770             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
1771                 return;
1772         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w, win->g.h);
1773         do {
1774                 XMaskEvent(display, MOUSEMASK | ExposureMask |
1775                     SubstructureRedirectMask, &ev);
1776                 switch(ev.type) {
1777                 case ConfigureRequest:
1778                 case Expose:
1779                 case MapRequest:
1780                         handler[ev.type](&ev);
1781                         break;
1782                 case MotionNotify:
1783                         if (ev.xmotion.x < 0)
1784                                 ev.xmotion.x = 0;
1785                         if (ev.xmotion.y < 0)
1786                                 ev.xmotion.y = 0;
1787                         win->g.w = ev.xmotion.x;
1788                         win->g.h = ev.xmotion.y;
1789
1790                         /* not free, don't sync more than 60 times / second */
1791                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
1792                                 time = ev.xmotion.time;
1793                                 XSync(display, False);
1794                                 resize_window(win, args->id);
1795                         }
1796                         break;
1797                 }
1798         } while (ev.type != ButtonRelease);
1799         if (time) {
1800                 XSync(display, False);
1801                 resize_window(win, args->id);
1802         }
1803         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w - 1,
1804             win->g.h - 1);
1805         XUngrabPointer(display, CurrentTime);
1806
1807         /* drain events */
1808         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
1809 }
1810
1811 void
1812 move_window(struct ws_win *win)
1813 {
1814         unsigned int            mask;
1815         XWindowChanges          wc;
1816         struct swm_region       *r;
1817
1818         r = root_to_region(win->wa.root);
1819         bzero(&wc, sizeof wc);
1820         mask = CWX | CWY;
1821         wc.x = win->g.x;
1822         wc.y = win->g.y;
1823
1824         DNPRINTF(SWM_D_STACK, "move_window: win %lu x %d y %d w %d h %d\n",
1825             win->id, wc.x, wc.y, wc.width, wc.height);
1826
1827         XConfigureWindow(display, win->id, mask, &wc);
1828         config_win(win);
1829 }
1830
1831 void
1832 move(struct ws_win *win, union arg *args)
1833 {
1834         XEvent                  ev;
1835         Time                    time = 0;
1836         int                     restack = 0;
1837
1838         DNPRINTF(SWM_D_MOUSE, "move: win %lu floating %d trans %d\n",
1839             win->id, win->floating, win->transient);
1840
1841         if (win->floating == 0) {
1842                 win->floating = 1;
1843                 win->manual = 1;
1844                 restack = 1;
1845         }
1846
1847         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
1848             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
1849                 return;
1850         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
1851         do {
1852                 XMaskEvent(display, MOUSEMASK | ExposureMask |
1853                     SubstructureRedirectMask, &ev);
1854                 switch(ev.type) {
1855                 case ConfigureRequest:
1856                 case Expose:
1857                 case MapRequest:
1858                         handler[ev.type](&ev);
1859                         break;
1860                 case MotionNotify:
1861                         win->g.x = ev.xmotion.x_root;
1862                         win->g.y = ev.xmotion.y_root;
1863
1864                         /* not free, don't sync more than 60 times / second */
1865                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
1866                                 time = ev.xmotion.time;
1867                                 XSync(display, False);
1868                                 move_window(win);
1869                         }
1870                         break;
1871                 }
1872         } while (ev.type != ButtonRelease);
1873         if (time) {
1874                 XSync(display, False);
1875                 move_window(win);
1876         }
1877         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
1878         XUngrabPointer(display, CurrentTime);
1879         if (restack)
1880                 stack();
1881
1882         /* drain events */
1883         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
1884 }
1885
1886 /* mouse */
1887 enum { client_click, root_click };
1888 struct button {
1889         unsigned int            action;
1890         unsigned int            mask;
1891         unsigned int            button;
1892         void                    (*func)(struct ws_win *, union arg *);
1893         union arg               args;
1894 } buttons[] = {
1895           /* action             key             mouse button    func            args */
1896         { client_click,         MODKEY,         Button3,        resize,         {.id = SWM_ARG_ID_DONTCENTER} },
1897         { client_click,         MODKEY | ShiftMask, Button3,    resize,         {.id = SWM_ARG_ID_CENTER} },
1898         { client_click,         MODKEY,         Button1,        move,           {0} },
1899 };
1900
1901 void
1902 updatenumlockmask(void)
1903 {
1904         unsigned int            i, j;
1905         XModifierKeymap         *modmap;
1906
1907         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1908         numlockmask = 0;
1909         modmap = XGetModifierMapping(display);
1910         for (i = 0; i < 8; i++)
1911                 for (j = 0; j < modmap->max_keypermod; j++)
1912                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1913                           == XKeysymToKeycode(display, XK_Num_Lock))
1914                                 numlockmask = (1 << i);
1915
1916         XFreeModifiermap(modmap);
1917 }
1918
1919 void
1920 grabkeys(void)
1921 {
1922         unsigned int            i, j, k;
1923         KeyCode                 code;
1924         unsigned int            modifiers[] =
1925             { 0, LockMask, numlockmask, numlockmask | LockMask };
1926
1927         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1928         updatenumlockmask();
1929
1930         for (k = 0; k < ScreenCount(display); k++) {
1931                 if (TAILQ_EMPTY(&screens[k].rl))
1932                         continue;
1933                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1934                 for (i = 0; i < LENGTH(keys); i++) {
1935                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1936                                 for (j = 0; j < LENGTH(modifiers); j++)
1937                                         XGrabKey(display, code,
1938                                             keys[i].mod | modifiers[j],
1939                                             screens[k].root, True,
1940                                             GrabModeAsync, GrabModeAsync);
1941                 }
1942         }
1943 }
1944
1945 void
1946 grabbuttons(struct ws_win *win, int focused)
1947 {
1948         unsigned int            i, j;
1949         unsigned int            modifiers[] =
1950             { 0, LockMask, numlockmask, numlockmask|LockMask };
1951
1952         updatenumlockmask();
1953         XUngrabButton(display, AnyButton, AnyModifier, win->id);
1954         if(focused) {
1955                 for (i = 0; i < LENGTH(buttons); i++)
1956                         if (buttons[i].action == client_click)
1957                                 for (j = 0; j < LENGTH(modifiers); j++)
1958                                         XGrabButton(display, buttons[i].button,
1959                                             buttons[i].mask | modifiers[j],
1960                                             win->id, False, BUTTONMASK,
1961                                             GrabModeAsync, GrabModeSync, None,
1962                                             None);
1963         } else
1964                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
1965                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
1966 }
1967
1968 void
1969 expose(XEvent *e)
1970 {
1971         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
1972 }
1973
1974 void
1975 keypress(XEvent *e)
1976 {
1977         unsigned int            i;
1978         KeySym                  keysym;
1979         XKeyEvent               *ev = &e->xkey;
1980
1981         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
1982
1983         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
1984         for (i = 0; i < LENGTH(keys); i++)
1985                 if (keysym == keys[i].keysym
1986                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1987                    && keys[i].func)
1988                         keys[i].func(root_to_region(ev->root),
1989                             &(keys[i].args));
1990 }
1991
1992 void
1993 buttonpress(XEvent *e)
1994 {
1995         XButtonPressedEvent     *ev = &e->xbutton;
1996
1997         struct ws_win           *win;
1998         int                     i, action;
1999
2000         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
2001
2002         action = root_click;
2003         if ((win = find_window(ev->window)) == NULL)
2004                 return;
2005         else {
2006                 focus_win(win);
2007                 action = client_click;
2008         }
2009
2010         for (i = 0; i < LENGTH(buttons); i++)
2011                 if (action == buttons[i].action && buttons[i].func &&
2012                     buttons[i].button == ev->button &&
2013                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
2014                         buttons[i].func(win, &buttons[i].args);
2015 }
2016
2017 void
2018 set_win_state(struct ws_win *win, long state)
2019 {
2020         long                    data[] = {state, None};
2021
2022         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
2023
2024         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
2025             (unsigned char *)data, 2);
2026 }
2027
2028 struct ws_win *
2029 manage_window(Window id)
2030 {
2031         Window                  trans;
2032         struct workspace        *ws;
2033         struct ws_win           *win;
2034         int                     format, i, ws_idx;
2035         unsigned long           nitems, bytes;
2036         Atom                    ws_idx_atom = 0, type;
2037         unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
2038         struct swm_region       *r;
2039         long                    mask;
2040         const char              *errstr;
2041
2042         if ((win = find_window(id)) != NULL)
2043                         return (win);   /* already being managed */
2044
2045         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
2046                 errx(1, "calloc: failed to allocate memory for new window");
2047
2048         /* Get all the window data in one shot */
2049         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2050         if (ws_idx_atom)
2051                 XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
2052                     False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
2053         XGetWindowAttributes(display, id, &win->wa);
2054         XGetTransientForHint(display, id, &trans);
2055         XGetWMNormalHints(display, id, &win->sh, &mask); /* XXX function? */
2056         if (trans) {
2057                 win->transient = trans;
2058                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
2059                     (unsigned)win->id, win->transient);
2060         }
2061
2062         /*
2063          * Figure out where to put the window. If it was previously assigned to
2064          * a workspace (either by spawn() or manually moving), and isn't
2065          * transient, * put it in the same workspace
2066          */
2067         r = root_to_region(win->wa.root);
2068         if (prop && win->transient == 0) {
2069                 DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
2070                 ws_idx = strtonum(prop, 0, 9, &errstr);
2071                 if (errstr) {
2072                         DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
2073                             errstr, prop);
2074                 }
2075                 ws = &r->s->ws[ws_idx];
2076         } else
2077                 ws = r->ws;
2078
2079         /* set up the window layout */
2080         win->id = id;
2081         win->ws = ws;
2082         win->s = r->s;  /* this never changes */
2083         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
2084
2085         win->g.w = win->wa.width;
2086         win->g.h = win->wa.height;
2087         win->g.x = win->wa.x;
2088         win->g.y = win->wa.y;
2089
2090         /* Set window properties so we can remember this after reincarnation */
2091         if (ws_idx_atom && prop == NULL &&
2092             snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
2093                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
2094                     ws_idx_str);
2095                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
2096                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
2097         }
2098         XFree(prop);
2099
2100         /*
2101         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);
2102         */
2103
2104         if (XGetClassHint(display, win->id, &win->ch)) {
2105                 DNPRINTF(SWM_D_CLASS, "class: %s name: %s\n",
2106                     win->ch.res_class, win->ch.res_name);
2107                 for (i = 0; quirks[i].class != NULL && quirks[i].name != NULL &&
2108                     quirks[i].quirk != 0; i++){
2109                         if (!strcmp(win->ch.res_class, quirks[i].class) &&
2110                             !strcmp(win->ch.res_name, quirks[i].name)) {
2111                                 DNPRINTF(SWM_D_CLASS, "found: %s name: %s\n",
2112                                     win->ch.res_class, win->ch.res_name);
2113                                 if (quirks[i].quirk & SWM_Q_FLOAT)
2114                                         win->floating = 1;
2115                         }
2116                 }
2117         }
2118
2119         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
2120             PropertyChangeMask | StructureNotifyMask);
2121
2122         set_win_state(win, NormalState);
2123
2124         /* make new win focused */
2125         focus_win(win);
2126
2127         return (win);
2128 }
2129
2130 void
2131 configurerequest(XEvent *e)
2132 {
2133         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
2134         struct ws_win           *win;
2135         int                     new = 0;
2136         XWindowChanges          wc;
2137
2138         if ((win = find_window(ev->window)) == NULL)
2139                 new = 1;
2140
2141         if (new) {
2142                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
2143                     ev->window);
2144                 /*
2145                 fprintf(stderr, "configurerequest: new window: %lu x %d y %d w %d h %d bw %d s %d sm %d\n",
2146                     ev->window, ev->x, ev->y, ev->width, ev->height, ev->border_width, ev->above, ev->detail);
2147                 */
2148                 bzero(&wc, sizeof wc);
2149                 wc.x = ev->x;
2150                 wc.y = ev->y;
2151                 wc.width = ev->width;
2152                 wc.height = ev->height;
2153                 wc.border_width = ev->border_width;
2154                 wc.sibling = ev->above;
2155                 wc.stack_mode = ev->detail;
2156                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
2157         } else {
2158                 /*
2159                 fprintf(stderr, "configurerequest: change window: %lu\n",
2160                     ev->window);
2161                 */
2162                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
2163                     ev->window);
2164                 if (win->floating) {
2165                         if (ev->value_mask & CWX)
2166                                 win->g.x = ev->x;
2167                         if (ev->value_mask & CWY)
2168                                 win->g.y = ev->y;
2169                         if (ev->value_mask & CWWidth)
2170                                 win->g.w = ev->width;
2171                         if (ev->value_mask & CWHeight)
2172                                 win->g.h = ev->height;
2173                         if (win->ws->r != NULL) {
2174                                 /* this seems to be full screen */
2175                                 if (win->g.w >= WIDTH(win->ws->r)) {
2176                                         win->g.x = -1;
2177                                         win->g.w = WIDTH(win->ws->r);
2178                                         ev->value_mask |= CWX | CWWidth;
2179                                 }
2180                                 if (win->g.h >= HEIGHT(win->ws->r)) {
2181                                         /* kill border */
2182                                         win->g.y = -1;
2183                                         win->g.h = HEIGHT(win->ws->r);
2184                                         ev->value_mask |= CWY | CWHeight;
2185                                 }
2186                         }
2187                         if ((ev->value_mask & (CWX|CWY)) &&
2188                             !(ev->value_mask & (CWWidth|CWHeight)))
2189                                 config_win(win);
2190                         XMoveResizeWindow(display, win->id,
2191                             win->g.x, win->g.y, win->g.w, win->g.h);
2192                 } else
2193                         config_win(win);
2194         }
2195 }
2196
2197 void
2198 configurenotify(XEvent *e)
2199 {
2200         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
2201             e->xconfigure.window);
2202 }
2203
2204 void
2205 destroynotify(XEvent *e)
2206 {
2207         struct ws_win           *win;
2208         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2209         struct workspace        *ws;
2210
2211         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
2212
2213         if ((win = find_window(ev->window)) != NULL) {
2214                 ws = win->ws;
2215                 /* find a window to focus */
2216                 if (ws->focus == win)
2217                         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
2218                 if (ws->focus == NULL)
2219                         ws->focus = TAILQ_FIRST(&ws->winlist);
2220                 if (ws->focus == NULL || ws->focus == win) {
2221                         ws->focus = NULL;
2222                         unfocus_all();
2223                 } else
2224                         focus_win(ws->focus);
2225                 TAILQ_REMOVE(&ws->winlist, win, entry);
2226                 set_win_state(win, WithdrawnState);
2227                 if (win->ch.res_class)
2228                         XFree(win->ch.res_class);
2229                 if (win->ch.res_name)
2230                         XFree(win->ch.res_name);
2231                 free(win);
2232                 stack();
2233         }
2234 }
2235
2236 void
2237 enternotify(XEvent *e)
2238 {
2239         XCrossingEvent          *ev = &e->xcrossing;
2240         struct ws_win           *win;
2241
2242         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
2243
2244         if (ignore_enter) {
2245                 /* eat event(r) to prevent autofocus */
2246                 ignore_enter--;
2247                 return;
2248         }
2249
2250         if ((win = find_window(ev->window)) != NULL)
2251                 focus_win(win);
2252 }
2253
2254 void
2255 focusin(XEvent *e)
2256 {
2257         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
2258 }
2259
2260 void
2261 mappingnotify(XEvent *e)
2262 {
2263         XMappingEvent           *ev = &e->xmapping;
2264
2265         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
2266
2267         XRefreshKeyboardMapping(ev);
2268         if (ev->request == MappingKeyboard)
2269                 grabkeys();
2270 }
2271
2272 void
2273 maprequest(XEvent *e)
2274 {
2275         XMapRequestEvent        *ev = &e->xmaprequest;
2276         XWindowAttributes       wa;
2277
2278         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
2279             e->xmaprequest.window);
2280
2281         if (!XGetWindowAttributes(display, ev->window, &wa))
2282                 return;
2283         if (wa.override_redirect)
2284                 return;
2285         manage_window(e->xmaprequest.window);
2286         stack();
2287 }
2288
2289 void
2290 propertynotify(XEvent *e)
2291 {
2292         struct ws_win           *win;
2293         XPropertyEvent          *ev = &e->xproperty;
2294
2295         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
2296             ev->window);
2297
2298         if (ev->state == PropertyDelete)
2299                 return; /* ignore */
2300         win = find_window(ev->window);
2301         if (win == NULL)
2302                 return;
2303
2304         switch (ev->atom) {
2305         case XA_WM_NORMAL_HINTS:
2306 #if 0
2307                 long            mask;
2308                 XGetWMNormalHints(display, win->id, &win->sh, &mask);
2309                 fprintf(stderr, "normal hints: flag 0x%x\n", win->sh.flags);
2310                 if (win->sh.flags & PMinSize) {
2311                         win->g.w = win->sh.min_width;
2312                         win->g.h = win->sh.min_height;
2313                         fprintf(stderr, "min %d %d\n", win->g.w, win->g.h);
2314                 }
2315                 XMoveResizeWindow(display, win->id,
2316                     win->g.x, win->g.y, win->g.w, win->g.h);
2317 #endif
2318                 break;
2319         default:
2320                 break;
2321         }
2322 }
2323
2324 void
2325 unmapnotify(XEvent *e)
2326 {
2327         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
2328 }
2329
2330 void
2331 visibilitynotify(XEvent *e)
2332 {
2333         int                     i;
2334         struct swm_region       *r;
2335
2336         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
2337             e->xvisibility.window);
2338         if (e->xvisibility.state == VisibilityUnobscured)
2339                 for (i = 0; i < ScreenCount(display); i++)
2340                         TAILQ_FOREACH(r, &screens[i].rl, entry)
2341                                 if (e->xvisibility.window == r->bar_window)
2342                                         bar_update();
2343 }
2344
2345 int
2346 xerror_start(Display *d, XErrorEvent *ee)
2347 {
2348         other_wm = 1;
2349         return (-1);
2350 }
2351
2352 int
2353 xerror(Display *d, XErrorEvent *ee)
2354 {
2355         /* fprintf(stderr, "error: %p %p\n", display, ee); */
2356         return (-1);
2357 }
2358
2359 int
2360 active_wm(void)
2361 {
2362         other_wm = 0;
2363         xerrorxlib = XSetErrorHandler(xerror_start);
2364
2365         /* this causes an error if some other window manager is running */
2366         XSelectInput(display, DefaultRootWindow(display),
2367             SubstructureRedirectMask);
2368         XSync(display, False);
2369         if (other_wm)
2370                 return (1);
2371
2372         XSetErrorHandler(xerror);
2373         XSync(display, False);
2374         return (0);
2375 }
2376
2377 long
2378 getstate(Window w)
2379 {
2380         int                     format, status;
2381         long                    result = -1;
2382         unsigned char           *p = NULL;
2383         unsigned long           n, extra;
2384         Atom                    real;
2385
2386         astate = XInternAtom(display, "WM_STATE", False);
2387         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
2388             &real, &format, &n, &extra, (unsigned char **)&p);
2389         if (status != Success)
2390                 return (-1);
2391         if (n != 0)
2392                 result = *p;
2393         XFree(p);
2394         return (result);
2395 }
2396
2397 void
2398 remove_region(struct swm_region *r)
2399 {
2400         struct swm_screen       *s = r->s;
2401         struct ws_win           *win;
2402
2403         DNPRINTF(SWM_D_MISC, "removing region: screen[%d]:%dx%d+%d+%d\n",
2404              s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r));
2405
2406         TAILQ_FOREACH(win, &r->ws->winlist, entry)
2407                 XUnmapWindow(display, win->id);
2408         r->ws->r = NULL;
2409
2410         XDestroyWindow(display, r->bar_window);
2411         TAILQ_REMOVE(&s->rl, r, entry);
2412         free(r);
2413 }
2414
2415 void
2416 new_region(struct swm_screen *s, struct workspace *ws,
2417     int x, int y, int w, int h)
2418 {
2419         struct swm_region       *r, *n;
2420         int                     i;
2421
2422         DNPRINTF(SWM_D_MISC, "new region: screen[%d]:%dx%d+%d+%d\n",
2423              s->idx, w, h, x, y);
2424
2425         /* remove any conflicting regions */
2426         n = TAILQ_FIRST(&s->rl);
2427         while (n) {
2428                 r = n;
2429                 n = TAILQ_NEXT(r, entry);
2430                 if (X(r) < (x + w) &&
2431                     (X(r) + WIDTH(r)) > x &&
2432                     Y(r) < (y + h) &&
2433                     (Y(r) + HEIGHT(r)) > y) {
2434                         if (ws == NULL)
2435                                 ws = r->ws;
2436                         remove_region(r);
2437                 }
2438         }
2439
2440         /* pick an appropriate workspace */
2441         if (ws == NULL) {
2442                 for (i = 0; i < SWM_WS_MAX; i++)
2443                         if (s->ws[i].r == NULL) {
2444                                 ws = &s->ws[i];
2445                                 break;
2446                         }
2447
2448                 if (ws == NULL)
2449                         errx(1, "no free regions\n");
2450         }
2451
2452         if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
2453                 errx(1, "calloc: failed to allocate memory for screen");
2454
2455         X(r) = x;
2456         Y(r) = y;
2457         WIDTH(r) = w;
2458         HEIGHT(r) = h;
2459         r->s = s;
2460         r->ws = ws;
2461         ws->r = r;
2462         TAILQ_INSERT_TAIL(&s->rl, r, entry);
2463         bar_setup(r);
2464 }
2465
2466 void
2467 setup_screens(void)
2468 {
2469 #ifdef SWM_XRR_HAS_CRTC
2470         XRRCrtcInfo             *ci;
2471         XRRScreenResources      *sr;
2472         int                     c;
2473 #endif /* SWM_XRR_HAS_CRTC */
2474         Window                  d1, d2, *wins = NULL;
2475         XWindowAttributes       wa;
2476         struct swm_region       *r;
2477         unsigned int            no;
2478         int                     errorbase, major, minor;
2479         int                     ncrtc = 0, w = 0;
2480         int                     i, j, k;
2481         struct workspace        *ws;
2482         int                     ws_idx_atom;
2483
2484
2485         if ((screens = calloc(ScreenCount(display),
2486              sizeof(struct swm_screen))) == NULL)
2487                 errx(1, "calloc: screens");
2488
2489         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2490
2491
2492         /* map physical screens */
2493         for (i = 0; i < ScreenCount(display); i++) {
2494                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2495                 screens[i].idx = i;
2496                 TAILQ_INIT(&screens[i].rl);
2497                 screens[i].root = RootWindow(display, i);
2498
2499                 /* set default colors */
2500                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2501                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2502                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2503                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2504                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2505
2506                 /* init all workspaces */
2507                 for (j = 0; j < SWM_WS_MAX; j++) {
2508                         ws = &screens[i].ws[j];
2509                         ws->idx = j;
2510                         ws->restack = 1;
2511                         ws->focus = NULL;
2512                         ws->r = NULL;
2513                         TAILQ_INIT(&ws->winlist);
2514
2515                         for (k = 0; layouts[k].l_stack != NULL; k++)
2516                                 if (layouts[k].l_config != NULL)
2517                                         layouts[k].l_config(ws,
2518                                             SWM_ARG_ID_STACKINIT);
2519                         ws->cur_layout = &layouts[0];
2520                 }
2521
2522                 /* map virtual screens onto physical screens */
2523                 screens[i].xrandr_support = XRRQueryExtension(display,
2524                     &xrandr_eventbase, &errorbase);
2525                 if (screens[i].xrandr_support)
2526                         if (XRRQueryVersion(display, &major, &minor) &&
2527                             major < 1)
2528                                 screens[i].xrandr_support = 0;
2529
2530 #if 0   /* not ready for dynamic screen changes */
2531                 if (screens[i].xrandr_support)
2532                         XRRSelectInput(display,
2533                             screens[r->s].root,
2534                             RRScreenChangeNotifyMask);
2535 #endif
2536
2537                 /* grab existing windows (before we build the bars)*/
2538                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2539                         continue;
2540
2541 #ifdef SWM_XRR_HAS_CRTC
2542                 sr = XRRGetScreenResources(display, screens[i].root);
2543                 if (sr == NULL)
2544                         new_region(&screens[i], &screens[i].ws[w],
2545                             0, 0, DisplayWidth(display, i),
2546                             DisplayHeight(display, i));
2547                 else
2548                         ncrtc = sr->ncrtc;
2549
2550                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2551                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2552                         if (ci->noutput == 0)
2553                                 continue;
2554
2555                         if (ci != NULL && ci->mode == None)
2556                                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2557                                     DisplayWidth(display, i),
2558                                     DisplayHeight(display, i));
2559                         else
2560                                 new_region(&screens[i], &screens[i].ws[w],
2561                                     ci->x, ci->y, ci->width, ci->height);
2562                         w++;
2563                 }
2564                 if (ci)
2565                         XRRFreeCrtcInfo(ci);
2566                 XRRFreeScreenResources(sr);
2567 #else
2568                 new_region(&screens[i], &screens[i].ws[w], 0, 0,
2569                     DisplayWidth(display, i),
2570                     DisplayHeight(display, i));
2571 #endif /* SWM_XRR_HAS_CRTC */
2572
2573                 /* attach windows to a region */
2574                 /* normal windows */
2575                 if ((r = TAILQ_FIRST(&screens[i].rl)) == NULL)
2576                         errx(1, "no regions on screen %d", i);
2577
2578                 for (i = 0; i < no; i++) {
2579                         XGetWindowAttributes(display, wins[i], &wa);
2580                         if (!XGetWindowAttributes(display, wins[i], &wa) ||
2581                             wa.override_redirect ||
2582                             XGetTransientForHint(display, wins[i], &d1))
2583                                 continue;
2584
2585                         if (wa.map_state == IsViewable ||
2586                             getstate(wins[i]) == NormalState)
2587                                 manage_window(wins[i]);
2588                 }
2589                 /* transient windows */
2590                 for (i = 0; i < no; i++) {
2591                         if (!XGetWindowAttributes(display, wins[i], &wa))
2592                                 continue;
2593
2594                         if (XGetTransientForHint(display, wins[i], &d1) &&
2595                             (wa.map_state == IsViewable || getstate(wins[i]) ==
2596                             NormalState))
2597                                 manage_window(wins[i]);
2598                 }
2599                 if (wins) {
2600                         XFree(wins);
2601                         wins = NULL;
2602                 }
2603         }
2604 }
2605
2606 int
2607 main(int argc, char *argv[])
2608 {
2609         struct passwd           *pwd;
2610         char                    conf[PATH_MAX], *cfile = NULL;
2611         struct stat             sb;
2612         XEvent                  e;
2613         int                     xfd;
2614         fd_set                  rd;
2615
2616         start_argv = argv;
2617         fprintf(stderr, "Welcome to scrotwm V%s cvs tag: %s\n",
2618             SWM_VERSION, cvstag);
2619         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2620                 warnx("no locale support");
2621
2622         if (!(display = XOpenDisplay(0)))
2623                 errx(1, "can not open display");
2624
2625         if (active_wm())
2626                 errx(1, "other wm running");
2627
2628         astate = XInternAtom(display, "WM_STATE", False);
2629
2630         /* look for local and global conf file */
2631         pwd = getpwuid(getuid());
2632         if (pwd == NULL)
2633                 errx(1, "invalid user %d", getuid());
2634
2635         setup_screens();
2636
2637         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2638         if (stat(conf, &sb) != -1) {
2639                 if (S_ISREG(sb.st_mode))
2640                         cfile = conf;
2641         } else {
2642                 /* try global conf file */
2643                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2644                 if (!stat(conf, &sb))
2645                         if (S_ISREG(sb.st_mode))
2646                                 cfile = conf;
2647         }
2648         if (cfile)
2649                 conf_load(cfile);
2650         bar_refresh();
2651
2652         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2653
2654         grabkeys();
2655         stack();
2656
2657         xfd = ConnectionNumber(display);
2658         while (running) {
2659                 FD_ZERO(&rd);
2660                 FD_SET(xfd, &rd);
2661                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2662                         if (errno != EINTR)
2663                                 errx(1, "select failed");
2664                 if (bar_alarm) {
2665                         bar_alarm = 0;
2666                         bar_update();
2667                 }
2668                 while(XPending(display)) {
2669                         XNextEvent(display, &e);
2670                         if (handler[e.type])
2671                                 handler[e.type](&e);
2672                 }
2673         }
2674
2675         XCloseDisplay(display);
2676
2677         return (0);
2678 }