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_support;
 147 int                     xrandr_eventbase;
 148 int                     ignore_enter = 0;
 149 unsigned int            numlockmask = 0;
 150 Display                 *display;
 151
 152 int                     cycle_empty = 0;
 153 int                     cycle_visible = 0;
 154
 155 /* dialog windows */
 156 double                  dialog_ratio = .6;
 157 /* status bar */
 158 #define SWM_BAR_MAX     (128)
 159 char                    *bar_argv[] = { NULL, NULL };
 160 int                     bar_pipe[2];
 161 char                    bar_ext[SWM_BAR_MAX];
 162 char                    bar_vertext[SWM_BAR_MAX];
 163 int                     bar_version = 0;
 164 sig_atomic_t            bar_alarm = 0;
 165 int                     bar_delay = 30;
 166 int                     bar_enabled = 1;
 167 int                     bar_extra = 1;
 168 int                     bar_extra_running = 0;
 169 int                     bar_verbose = 1;
 170 int                     bar_height = 0;
 171 pid_t                   bar_pid;
 172 GC                      bar_gc;
 173 XGCValues               bar_gcv;
 174 int                     bar_fidx = 0;
 175 XFontStruct             *bar_fs;
 176 char                    *bar_fonts[] = {
 177                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 178                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 179                             NULL
 180 };
 181
 182 /* terminal + args */
 183 char                    *spawn_term[] = { "xterm", NULL };
 184 char                    *spawn_screenshot[] = { "screenshot.sh", NULL, NULL };
 185 char                    *spawn_lock[] = { "xlock", NULL };
 186 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL, "-nb", NULL,
 187                             "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 188
 189 #define SWM_MENU_FN     (2)
 190 #define SWM_MENU_NB     (4)
 191 #define SWM_MENU_NF     (6)
 192 #define SWM_MENU_SB     (8)
 193 #define SWM_MENU_SF     (10)
 194
 195 /* layout manager data */
 196 struct swm_geometry {
 197         int                     x;
 198         int                     y;
 199         int                     w;
 200         int                     h;
 201 };
 202
 203 struct swm_screen;
 204 struct workspace;
 205
 206 /* virtual "screens" */
 207 struct swm_region {
 208         TAILQ_ENTRY(swm_region) entry;
 209         struct swm_geometry     g;
 210         struct workspace        *ws;    /* current workspace on this region */
 211         struct swm_screen       *s;     /* screen idx */
 212         Window                  bar_window;
 213 };
 214 TAILQ_HEAD(swm_region_list, swm_region);
 215
 216 struct ws_win {
 217         TAILQ_ENTRY(ws_win)     entry;
 218         Window                  id;
 219         struct swm_geometry     g;
 220         int                     got_focus;
 221         int                     floating;
 222         int                     transient;
 223         int                     manual;
 224         unsigned long           quirks;
 225         struct workspace        *ws;    /* always valid */
 226         struct swm_screen       *s;     /* always valid, never changes */
 227         XWindowAttributes       wa;
 228         XSizeHints              sh;
 229         XClassHint              ch;
 230 };
 231 TAILQ_HEAD(ws_win_list, ws_win);
 232
 233 /* layout handlers */
 234 void    stack(void);
 235 void    vertical_config(struct workspace *, int);
 236 void    vertical_stack(struct workspace *, struct swm_geometry *);
 237 void    horizontal_config(struct workspace *, int);
 238 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 239 void    max_stack(struct workspace *, struct swm_geometry *);
 240
 241 void    grabbuttons(struct ws_win *, int);
 242
 243 struct layout {
 244         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 245         void            (*l_config)(struct workspace *, int);
 246 } layouts[] =  {
 247         /* stack,               configure */
 248         { vertical_stack,       vertical_config},
 249         { horizontal_stack,     horizontal_config},
 250         { max_stack,            NULL},
 251         { NULL,                 NULL},
 252 };
 253
 254 #define SWM_H_SLICE             (32)
 255 #define SWM_V_SLICE             (32)
 256
 257 /* define work spaces */
 258 struct workspace {
 259         int                     idx;            /* workspace index */
 260         int                     restack;        /* restack on switch */
 261         struct layout           *cur_layout;    /* current layout handlers */
 262         struct ws_win           *focus;         /* may be NULL */
 263         struct swm_region       *r;             /* may be NULL */
 264         struct ws_win_list      winlist;        /* list of windows in ws */
 265
 266         /* stacker state */
 267         struct {
 268                                 int horizontal_msize;
 269                                 int horizontal_mwin;
 270                                 int horizontal_stacks;
 271                                 int vertical_msize;
 272                                 int vertical_mwin;
 273                                 int vertical_stacks;
 274         } l_state;
 275 };
 276
 277 enum    { SWM_S_COLOR_BAR, SWM_S_COLOR_BAR_BORDER, SWM_S_COLOR_BAR_FONT,
 278           SWM_S_COLOR_FOCUS, SWM_S_COLOR_UNFOCUS, SWM_S_COLOR_MAX };
 279
 280 /* physical screen mapping */
 281 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 282 struct swm_screen {
 283         int                     idx;            /* screen index */
 284         struct swm_region_list  rl;     /* list of regions on this screen */
 285         struct swm_region_list  orl;    /* list of old regions */
 286         Window                  root;
 287         struct workspace        ws[SWM_WS_MAX];
 288
 289         /* colors */
 290         struct {
 291                 unsigned long   color;
 292                 char            *name;
 293         } c[SWM_S_COLOR_MAX];
 294 };
 295 struct swm_screen       *screens;
 296 int                     num_screens;
 297
 298 struct ws_win           *cur_focus = NULL;
 299
 300 /* args to functions */
 301 union arg {
 302         int                     id;
 303 #define SWM_ARG_ID_FOCUSNEXT    (0)
 304 #define SWM_ARG_ID_FOCUSPREV    (1)
 305 #define SWM_ARG_ID_FOCUSMAIN    (2)
 306 #define SWM_ARG_ID_SWAPNEXT     (3)
 307 #define SWM_ARG_ID_SWAPPREV     (4)
 308 #define SWM_ARG_ID_SWAPMAIN     (5)
 309 #define SWM_ARG_ID_MASTERSHRINK (6)
 310 #define SWM_ARG_ID_MASTERGROW   (7)
 311 #define SWM_ARG_ID_MASTERADD    (8)
 312 #define SWM_ARG_ID_MASTERDEL    (9)
 313 #define SWM_ARG_ID_STACKRESET   (10)
 314 #define SWM_ARG_ID_STACKINIT    (11)
 315 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 316 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 317 #define SWM_ARG_ID_CYCLESC_UP   (14)
 318 #define SWM_ARG_ID_CYCLESC_DOWN (15)
 319 #define SWM_ARG_ID_COLINC       (16)
 320 #define SWM_ARG_ID_COLDEC       (17)
 321 #define SWM_ARG_ID_ROWINC       (16)
 322 #define SWM_ARG_ID_ROWDEL       (17)
 323 #define SWM_ARG_ID_SS_ALL       (0)
 324 #define SWM_ARG_ID_SS_WINDOW    (1)
 325 #define SWM_ARG_ID_DONTCENTER   (0)
 326 #define SWM_ARG_ID_CENTER       (1)
 327         char                    **argv;
 328 };
 329
 330 /* quirks */
 331 struct quirk {
 332         char                    *class;
 333         char                    *name;
 334         unsigned long           quirk;
 335 #define SWM_Q_FLOAT             (1<<0)
 336 #define SWM_Q_TRANSSZ           (1<<1)
 337 } quirks[] = {
 338         { "MPlayer",            "xv",           SWM_Q_FLOAT },
 339         { "OpenOffice.org 2.4", "VCLSalFrame",  SWM_Q_FLOAT },
 340         { "OpenOffice.org 3.0", "VCLSalFrame",  SWM_Q_FLOAT },
 341         { "Firefox-bin",        "firefox-bin",  SWM_Q_TRANSSZ},
 342         { NULL,         NULL,           0},
 343 };
 344
 345 /* events */
 346 void                    expose(XEvent *);
 347 void                    keypress(XEvent *);
 348 void                    buttonpress(XEvent *);
 349 void                    configurerequest(XEvent *);
 350 void                    configurenotify(XEvent *);
 351 void                    destroynotify(XEvent *);
 352 void                    enternotify(XEvent *);
 353 void                    focusin(XEvent *);
 354 void                    mappingnotify(XEvent *);
 355 void                    maprequest(XEvent *);
 356 void                    propertynotify(XEvent *);
 357 void                    unmapnotify(XEvent *);
 358 void                    visibilitynotify(XEvent *);
 359
 360 void                    (*handler[LASTEvent])(XEvent *) = {
 361                                 [Expose] = expose,
 362                                 [KeyPress] = keypress,
 363                                 [ButtonPress] = buttonpress,
 364                                 [ConfigureRequest] = configurerequest,
 365                                 [ConfigureNotify] = configurenotify,
 366                                 [DestroyNotify] = destroynotify,
 367                                 [EnterNotify] = enternotify,
 368                                 [FocusIn] = focusin,
 369                                 [MappingNotify] = mappingnotify,
 370                                 [MapRequest] = maprequest,
 371                                 [PropertyNotify] = propertynotify,
 372                                 [UnmapNotify] = unmapnotify,
 373                                 [VisibilityNotify] = visibilitynotify,
 374 };
 375
 376 unsigned long
 377 name_to_color(char *colorname)
 378 {
 379         Colormap                cmap;
 380         Status                  status;
 381         XColor                  screen_def, exact_def;
 382         unsigned long           result = 0;
 383         char                    cname[32] = "#";
 384
 385         cmap = DefaultColormap(display, screens[0].idx);
 386         status = XAllocNamedColor(display, cmap, colorname,
 387             &screen_def, &exact_def);
 388         if (!status) {
 389                 strlcat(cname, colorname + 2, sizeof cname - 1);
 390                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 391                     &exact_def);
 392         }
 393         if (status)
 394                 result = screen_def.pixel;
 395         else
 396                 fprintf(stderr, "color '%s' not found.\n", colorname);
 397
 398         return (result);
 399 }
 400
 401 void
 402 setscreencolor(char *val, int i, int c)
 403 {
 404         if (i > 0 && i <= ScreenCount(display)) {
 405                 screens[i - 1].c[c].color = name_to_color(val);
 406                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 407                         errx(1, "strdup");
 408         } else if (i == -1) {
 409                 for (i = 0; i < ScreenCount(display); i++)
 410                         screens[i].c[c].color = name_to_color(val);
 411                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 412                                 errx(1, "strdup");
 413         } else
 414                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 415                     i, ScreenCount(display));
 416 }
 417
 418 void            new_region(struct swm_screen *, int, int, int, int);
 419
 420 void
 421 custom_region(char *val)
 422 {
 423         unsigned int                    sidx, x, y, w, h;
 424
 425         if (sscanf(val, "screen[%u]:%ux%u+%u+%u", &sidx, &w, &h, &x, &y) != 5)
 426                 errx(1, "invalid custom region, "
 427                     "should be 'screen[<n>]:<n>x<n>+<n>+<n>\n");
 428         if (sidx < 1 || sidx > ScreenCount(display))
 429                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 430                     sidx, ScreenCount(display));
 431         sidx--;
 432
 433         if (w < 1 || h < 1)
 434                 errx(1, "region %ux%u+%u+%u too small\n", w, h, x, y);
 435
 436         if (x  < 0 || x > DisplayWidth(display, sidx) ||
 437             y < 0 || y > DisplayHeight(display, sidx) ||
 438             w + x > DisplayWidth(display, sidx) ||
 439             h + y > DisplayHeight(display, sidx))
 440                 errx(1, "region %ux%u+%u+%u not within screen boundaries "
 441                     "(%ux%u)\n", w, h, x, y,
 442                     DisplayWidth(display, sidx), DisplayHeight(display, sidx));
 443
 444         new_region(&screens[sidx], x, y, w, h);
 445 }
 446
 447 int
 448 varmatch(char *var, char *name, int *index)
 449 {
 450         char                    *p, buf[5];
 451         int                     i;
 452
 453         i = strncmp(var, name, 255);
 454         if (index == NULL)
 455                 return (i);
 456
 457         *index = -1;
 458         if (i <= 0)
 459                 return (i);
 460         p = var + strlen(name);
 461         if (*p++ != '[')
 462                 return (i);
 463         bzero(buf, sizeof buf);
 464         i = 0;
 465         while (isdigit(*p) && i < sizeof buf)
 466                 buf[i++] = *p++;
 467         if (i == 0 || i >= sizeof buf || *p != ']')
 468                 return (1);
 469         *index = strtonum(buf, 0, 99, NULL);
 470         return (0);
 471 }
 472
 473 /* conf file stuff */
 474 #define SWM_CONF_WS     "\n= \t"
 475 #define SWM_CONF_FILE   "scrotwm.conf"
 476 int
 477 conf_load(char *filename)
 478 {
 479         FILE                    *config;
 480         char                    *line, *cp, *var, *val;
 481         size_t                  len, lineno = 0;
 482         int                     i, sc;
 483
 484         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 485
 486         if (filename == NULL)
 487                 return (1);
 488
 489         if ((config = fopen(filename, "r")) == NULL)
 490                 return (1);
 491
 492         for (sc = ScreenCount(display);;) {
 493                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 494                         if (feof(config))
 495                                 break;
 496                 cp = line;
 497                 cp += (long)strspn(cp, SWM_CONF_WS);
 498                 if (cp[0] == '\0') {
 499                         /* empty line */
 500                         free(line);
 501                         continue;
 502                 }
 503                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 504                         break;
 505                 cp += (long)strspn(cp, SWM_CONF_WS);
 506                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 507                         break;
 508
 509                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 510                 switch (var[0]) {
 511                 case 'b':
 512                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 513                                 bar_enabled = atoi(val);
 514                         else if (!varmatch(var, "bar_border", &i))
 515                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 516                         else if (!varmatch(var, "bar_color", &i))
 517                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 518                         else if (!varmatch(var, "bar_font_color", &i))
 519                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 520                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 521                                 asprintf(&bar_fonts[0], "%s", val);
 522                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 523                                 asprintf(&bar_argv[0], "%s", val);
 524                         else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 525                                 bar_delay = atoi(val);
 526                         else
 527                                 goto bad;
 528                         break;
 529
 530                 case 'c':
 531                         if (!varmatch(var, "color_focus", &i))
 532                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 533                         else if (!varmatch(var, "color_unfocus", &i))
 534                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 535                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 536                                 cycle_visible = atoi(val);
 537                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 538                                 cycle_visible = atoi(val);
 539                         else
 540                                 goto bad;
 541                         break;
 542
 543                 case 'd':
 544                         if (!strncmp(var, "dialog_ratio",
 545                             strlen("dialog_ratio"))) {
 546                                 dialog_ratio = atof(val);
 547                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 548                                         dialog_ratio = .6;
 549                         } else
 550                                 goto bad;
 551                         break;
 552
 553                 case 'r':
 554                         if (!strncmp(var, "region", strlen("region")))
 555                                 custom_region(val);
 556                         else
 557                                 goto bad;
 558                         break;
 559
 560                 case 's':
 561                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 562                                 asprintf(&spawn_term[0], "%s", val);
 563                         if (!strncmp(var, "screenshot_enabled",
 564                             strlen("screenshot_enabled")))
 565                                 ss_enabled = atoi(val);
 566                         if (!strncmp(var, "screenshot_app",
 567                             strlen("screenshot_app")))
 568                                 asprintf(&spawn_screenshot[0], "%s", val);
 569                         break;
 570                 default:
 571                         goto bad;
 572                 }
 573                 free(line);
 574         }
 575
 576         fclose(config);
 577         return (0);
 578
 579 bad:
 580         errx(1, "invalid conf file entry: %s=%s", var, val);
 581 }
 582
 583 void
 584 socket_setnonblock(int fd)
 585 {
 586         int                     flags;
 587
 588         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 589                 err(1, "fcntl F_GETFL");
 590         flags |= O_NONBLOCK;
 591         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 592                 err(1, "fcntl F_SETFL");
 593 }
 594
 595 void
 596 bar_print(struct swm_region *r, char *s)
 597 {
 598         XClearWindow(display, r->bar_window);
 599         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 600         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 601             strlen(s));
 602 }
 603
 604 void
 605 bar_extra_stop(void)
 606 {
 607         if (bar_pipe[0]) {
 608                 close(bar_pipe[0]);
 609                 bzero(bar_pipe, sizeof bar_pipe);
 610         }
 611         if (bar_pid) {
 612                 kill(bar_pid, SIGTERM);
 613                 bar_pid = 0;
 614         }
 615         strlcpy(bar_ext, "", sizeof bar_ext);
 616         bar_extra = 0;
 617 }
 618
 619 void
 620 bar_update(void)
 621 {
 622         time_t                  tmt;
 623         struct tm               tm;
 624         struct swm_region       *r;
 625         int                     i, x;
 626         size_t                  len;
 627         char                    s[SWM_BAR_MAX];
 628         char                    loc[SWM_BAR_MAX];
 629         char                    *b;
 630
 631         if (bar_enabled == 0)
 632                 return;
 633
 634         if (bar_extra && bar_extra_running) {
 635                 /* ignore short reads; it'll correct itself */
 636                 while ((b = fgetln(stdin, &len)) != NULL)
 637                         if (b && b[len - 1] == '\n') {
 638                                 b[len - 1] = '\0';
 639                                 strlcpy(bar_ext, b, sizeof bar_ext);
 640                         }
 641                 if (b == NULL && errno != EAGAIN) {
 642                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 643                             errno, strerror(errno));
 644                         bar_extra_stop();
 645                 }
 646         } else
 647                 strlcpy(bar_ext, "", sizeof bar_ext);
 648
 649         time(&tmt);
 650         localtime_r(&tmt, &tm);
 651         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 652         for (i = 0; i < ScreenCount(display); i++) {
 653                 x = 1;
 654                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 655                         snprintf(loc, sizeof loc, "%s     %d:%d    %s    %s",
 656                             s, x++, r->ws->idx + 1, bar_ext, bar_vertext);
 657                         bar_print(r, loc);
 658                 }
 659         }
 660         XSync(display, False);
 661         alarm(bar_delay);
 662 }
 663
 664 void
 665 bar_signal(int sig)
 666 {
 667         bar_alarm = 1;
 668 }
 669
 670 void
 671 bar_toggle(struct swm_region *r, union arg *args)
 672 {
 673         struct swm_region       *tmpr;
 674         int                     i, j, sc = ScreenCount(display);
 675
 676         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 677
 678         if (bar_enabled) {
 679                 for (i = 0; i < sc; i++)
 680                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 681                                 XUnmapWindow(display, tmpr->bar_window);
 682         } else {
 683                 for (i = 0; i < sc; i++)
 684                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 685                                 XMapRaised(display, tmpr->bar_window);
 686         }
 687         bar_enabled = !bar_enabled;
 688         XSync(display, False);
 689         for (i = 0; i < sc; i++)
 690                 for (j = 0; j < SWM_WS_MAX; j++)
 691                         screens[i].ws[j].restack = 1;
 692
 693         stack();
 694         /* must be after stack */
 695         for (i = 0; i < sc; i++)
 696                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 697                         bar_update();
 698 }
 699
 700 void
 701 bar_refresh(void)
 702 {
 703         XSetWindowAttributes    wa;
 704         struct swm_region       *r;
 705         int                     i;
 706
 707         /* do this here because the conf file is in memory */
 708         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 709                 /* launch external status app */
 710                 bar_extra_running = 1;
 711                 if (pipe(bar_pipe) == -1)
 712                         err(1, "pipe error");
 713                 socket_setnonblock(bar_pipe[0]);
 714                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 715                 if (dup2(bar_pipe[0], 0) == -1)
 716                         errx(1, "dup2");
 717                 if (dup2(bar_pipe[1], 1) == -1)
 718                         errx(1, "dup2");
 719                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 720                         err(1, "could not disable SIGPIPE");
 721                 switch (bar_pid = fork()) {
 722                 case -1:
 723                         err(1, "cannot fork");
 724                         break;
 725                 case 0: /* child */
 726                         close(bar_pipe[0]);
 727                         execvp(bar_argv[0], bar_argv);
 728                         err(1, "%s external app failed", bar_argv[0]);
 729                         break;
 730                 default: /* parent */
 731                         close(bar_pipe[1]);
 732                         break;
 733                 }
 734         }
 735
 736         bzero(&wa, sizeof wa);
 737         for (i = 0; i < ScreenCount(display); i++)
 738                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 739                         wa.border_pixel =
 740                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 741                         wa.background_pixel =
 742                             screens[i].c[SWM_S_COLOR_BAR].color;
 743                         XChangeWindowAttributes(display, r->bar_window,
 744                             CWBackPixel | CWBorderPixel, &wa);
 745                 }
 746         bar_update();
 747 }
 748
 749 void
 750 bar_setup(struct swm_region *r)
 751 {
 752         int                     i;
 753
 754         for (i = 0; bar_fonts[i] != NULL; i++) {
 755                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 756                 if (bar_fs) {
 757                         bar_fidx = i;
 758                         break;
 759                 }
 760         }
 761         if (bar_fonts[i] == NULL)
 762                         errx(1, "couldn't load font");
 763         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 764
 765         r->bar_window = XCreateSimpleWindow(display,
 766             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 767             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 768             r->s->c[SWM_S_COLOR_BAR].color);
 769         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 770         XSetFont(display, bar_gc, bar_fs->fid);
 771         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 772         if (bar_enabled)
 773                 XMapRaised(display, r->bar_window);
 774         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 775
 776         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 777                 err(1, "could not install bar_signal");
 778         bar_refresh();
 779 }
 780
 781 void
 782 version(struct swm_region *r, union arg *args)
 783 {
 784         bar_version = !bar_version;
 785         if (bar_version)
 786                 strlcpy(bar_vertext, cvstag, sizeof bar_vertext);
 787         else
 788                 strlcpy(bar_vertext, "", sizeof bar_vertext);
 789         bar_update();
 790 }
 791
 792 void
 793 config_win(struct ws_win *win)
 794 {
 795         XConfigureEvent         ce;
 796
 797         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 798             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 799         ce.type = ConfigureNotify;
 800         ce.display = display;
 801         ce.event = win->id;
 802         ce.window = win->id;
 803         ce.x = win->g.x;
 804         ce.y = win->g.y;
 805         ce.width = win->g.w;
 806         ce.height = win->g.h;
 807         ce.border_width = 1; /* XXX store this! */
 808         ce.above = None;
 809         ce.override_redirect = False;
 810         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 811 }
 812
 813 int
 814 count_win(struct workspace *ws, int count_transient)
 815 {
 816         struct ws_win           *win;
 817         int                     count = 0;
 818
 819         TAILQ_FOREACH(win, &ws->winlist, entry) {
 820                 if (count_transient == 0 && win->floating)
 821                         continue;
 822                 if (count_transient == 0 && win->transient)
 823                         continue;
 824                 count++;
 825         }
 826         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 827
 828         return (count);
 829 }
 830
 831 void
 832 quit(struct swm_region *r, union arg *args)
 833 {
 834         DNPRINTF(SWM_D_MISC, "quit\n");
 835         running = 0;
 836 }
 837
 838 void
 839 unmap_all(void)
 840 {
 841         struct ws_win           *win;
 842         int                     i, j;
 843
 844         for (i = 0; i < ScreenCount(display); i++)
 845                 for (j = 0; j < SWM_WS_MAX; j++)
 846                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 847                                 XUnmapWindow(display, win->id);
 848 }
 849
 850 void
 851 restart(struct swm_region *r, union arg *args)
 852 {
 853         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 854
 855         /* disable alarm because the following code may not be interrupted */
 856         alarm(0);
 857         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 858                 errx(1, "can't disable alarm");
 859
 860         bar_extra_stop();
 861         bar_extra = 1;
 862         unmap_all();
 863         XCloseDisplay(display);
 864         execvp(start_argv[0], start_argv);
 865         fprintf(stderr, "execvp failed\n");
 866         perror(" failed");
 867         quit(NULL, NULL);
 868 }
 869
 870 struct swm_region *
 871 root_to_region(Window root)
 872 {
 873         struct swm_region       *r = NULL;
 874         Window                  rr, cr;
 875         int                     i, x, y, wx, wy;
 876         unsigned int            mask;
 877
 878         for (i = 0; i < ScreenCount(display); i++)
 879                 if (screens[i].root == root)
 880                         break;
 881
 882         if (XQueryPointer(display, screens[i].root,
 883             &rr, &cr, &x, &y, &wx, &wy, &mask) != False) {
 884                 /* choose a region based on pointer location */
 885                 TAILQ_FOREACH(r, &screens[i].rl, entry)
 886                         if (x >= X(r) && x <= X(r) + WIDTH(r) &&
 887                             y >= Y(r) && y <= Y(r) + HEIGHT(r))
 888                                 break;
 889         }
 890
 891         if (r == NULL)
 892                 r = TAILQ_FIRST(&screens[i].rl);
 893
 894         return (r);
 895 }
 896
 897 struct ws_win *
 898 find_window(Window id)
 899 {
 900         struct ws_win           *win;
 901         int                     i, j;
 902
 903         for (i = 0; i < ScreenCount(display); i++)
 904                 for (j = 0; j < SWM_WS_MAX; j++)
 905                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 906                                 if (id == win->id)
 907                                         return (win);
 908         return (NULL);
 909 }
 910
 911 void
 912 spawn(struct swm_region *r, union arg *args)
 913 {
 914         char                    *ret;
 915         int                     si;
 916
 917         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 918         /*
 919          * The double-fork construct avoids zombie processes and keeps the code
 920          * clean from stupid signal handlers.
 921          */
 922         if (fork() == 0) {
 923                 if (fork() == 0) {
 924                         if (display)
 925                                 close(ConnectionNumber(display));
 926                         setenv("LD_PRELOAD", SWM_LIB, 1);
 927                         if (asprintf(&ret, "%d", r->ws->idx)) {
 928                                 setenv("_SWM_WS", ret, 1);
 929                                 free(ret);
 930                         }
 931                         if (asprintf(&ret, "%d", getpid())) {
 932                                 setenv("_SWM_PID", ret, 1);
 933                                 free(ret);
 934                         }
 935                         setsid();
 936                         /* kill stdin, mplayer, ssh-add etc. need that */
 937                         si = open("/dev/null", O_RDONLY, 0);
 938                         if (si == -1)
 939                                 err(1, "open /dev/null");
 940                         if (dup2(si, 0) == -1)
 941                                 err(1, "dup2 /dev/null");
 942                         execvp(args->argv[0], args->argv);
 943                         fprintf(stderr, "execvp failed\n");
 944                         perror(" failed");
 945                 }
 946                 exit(0);
 947         }
 948         wait(0);
 949 }
 950
 951 void
 952 spawnmenu(struct swm_region *r, union arg *args)
 953 {
 954         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
 955
 956         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
 957         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
 958         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
 959         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
 960         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
 961
 962         spawn(r, args);
 963 }
 964
 965 void
 966 unfocus_all(void)
 967 {
 968         struct ws_win           *win;
 969         int                     i, j;
 970
 971         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
 972
 973         for (i = 0; i < ScreenCount(display); i++)
 974                 for (j = 0; j < SWM_WS_MAX; j++)
 975                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
 976                                 if (win->ws->r == NULL)
 977                                         continue;
 978                                 grabbuttons(win, 0);
 979                                 XSetWindowBorder(display, win->id,
 980                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
 981                                 win->got_focus = 0;
 982                                 win->ws->focus = NULL;
 983                                 cur_focus = NULL;
 984                         }
 985 }
 986
 987 void
 988 focus_win(struct ws_win *win)
 989 {
 990         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
 991
 992         if (win == NULL)
 993                 return;
 994
 995         unfocus_all();
 996         win->ws->focus = win;
 997         if (win->ws->r != NULL) {
 998                 cur_focus = win;
 999                 if (!win->got_focus) {
1000                         XSetWindowBorder(display, win->id,
1001                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
1002                         grabbuttons(win, 1);
1003                 }
1004                 win->got_focus = 1;
1005                 XSetInputFocus(display, win->id,
1006                     RevertToPointerRoot, CurrentTime);
1007         }
1008 }
1009
1010 void
1011 switchws(struct swm_region *r, union arg *args)
1012 {
1013         int                     wsid = args->id;
1014         struct swm_region       *this_r, *other_r;
1015         struct ws_win           *win;
1016         struct workspace        *new_ws, *old_ws;
1017
1018         this_r = r;
1019         old_ws = this_r->ws;
1020         new_ws = &this_r->s->ws[wsid];
1021
1022         DNPRINTF(SWM_D_WS, "switchws screen[%d]:%dx%d+%d+%d: "
1023             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
1024             old_ws->idx, wsid);
1025
1026         if (new_ws == old_ws)
1027                 return;
1028
1029         other_r = new_ws->r;
1030         if (!other_r) {
1031                 /* if the other workspace is hidden, switch windows */
1032                 /* map new window first to prevent ugly blinking */
1033                 old_ws->r = NULL;
1034                 old_ws->restack = 1;
1035
1036                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
1037                         XMapRaised(display, win->id);
1038
1039                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
1040                         XUnmapWindow(display, win->id);
1041         } else {
1042                 other_r->ws = old_ws;
1043                 old_ws->r = other_r;
1044         }
1045         this_r->ws = new_ws;
1046         new_ws->r = this_r;
1047
1048         ignore_enter = 1;
1049         /* set focus */
1050         if (new_ws->focus)
1051                 focus_win(new_ws->focus);
1052         stack();
1053         bar_update();
1054 }
1055
1056 void
1057 cyclews(struct swm_region *r, union arg *args)
1058 {
1059         union                   arg a;
1060         struct swm_screen       *s = r->s;
1061
1062         DNPRINTF(SWM_D_WS, "cyclews id %d "
1063             "in screen[%d]:%dx%d+%d+%d ws %d\n", args->id,
1064             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1065
1066         a.id = r->ws->idx;
1067         do {
1068                 switch (args->id) {
1069                 case SWM_ARG_ID_CYCLEWS_UP:
1070                         if (a.id < SWM_WS_MAX - 1)
1071                                 a.id++;
1072                         else
1073                                 a.id = 0;
1074                         break;
1075                 case SWM_ARG_ID_CYCLEWS_DOWN:
1076                         if (a.id > 0)
1077                                 a.id--;
1078                         else
1079                                 a.id = SWM_WS_MAX - 1;
1080                         break;
1081                 default:
1082                         return;
1083                 };
1084
1085                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
1086                         continue;
1087                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
1088                         continue;
1089
1090                 switchws(r, &a);
1091         } while (a.id != r->ws->idx);
1092 }
1093
1094 void
1095 cyclescr(struct swm_region *r, union arg *args)
1096 {
1097         struct swm_region       *rr;
1098         int                     i;
1099
1100         i = r->s->idx;
1101         switch (args->id) {
1102         case SWM_ARG_ID_CYCLESC_UP:
1103                 rr = TAILQ_NEXT(r, entry);
1104                 if (rr == NULL)
1105                         rr = TAILQ_FIRST(&screens[i].rl);
1106                 break;
1107         case SWM_ARG_ID_CYCLESC_DOWN:
1108                 rr = TAILQ_PREV(r, swm_region_list, entry);
1109                 if (rr == NULL)
1110                         rr = TAILQ_LAST(&screens[i].rl, swm_region_list);
1111                 break;
1112         default:
1113                 return;
1114         };
1115         unfocus_all();
1116         XSetInputFocus(display, PointerRoot, RevertToPointerRoot, CurrentTime);
1117         XWarpPointer(display, None, rr->s[i].root, 0, 0, 0, 0, rr->g.x,
1118             rr->g.y + bar_enabled ? bar_height : 0);
1119 }
1120
1121 void
1122 swapwin(struct swm_region *r, union arg *args)
1123 {
1124         struct ws_win           *target;
1125         struct ws_win_list      *wl;
1126
1127
1128         DNPRINTF(SWM_D_WS, "swapwin id %d "
1129             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
1130             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1131         if (cur_focus == NULL)
1132                 return;
1133
1134         wl = &cur_focus->ws->winlist;
1135
1136         switch (args->id) {
1137         case SWM_ARG_ID_SWAPPREV:
1138                 target = TAILQ_PREV(cur_focus, ws_win_list, entry);
1139                 TAILQ_REMOVE(wl, cur_focus, entry);
1140                 if (target == NULL)
1141                         TAILQ_INSERT_TAIL(wl, cur_focus, entry);
1142                 else
1143                         TAILQ_INSERT_BEFORE(target, cur_focus, entry);
1144                 break;
1145         case SWM_ARG_ID_SWAPNEXT:
1146                 target = TAILQ_NEXT(cur_focus, entry);
1147                 TAILQ_REMOVE(wl, cur_focus, entry);
1148                 if (target == NULL)
1149                         TAILQ_INSERT_HEAD(wl, cur_focus, entry);
1150                 else
1151                         TAILQ_INSERT_AFTER(wl, target, cur_focus, entry);
1152                 break;
1153         case SWM_ARG_ID_SWAPMAIN:
1154                 target = TAILQ_FIRST(wl);
1155                 if (target == cur_focus)
1156                         return;
1157                 TAILQ_REMOVE(wl, target, entry);
1158                 TAILQ_INSERT_BEFORE(cur_focus, target, entry);
1159                 TAILQ_REMOVE(wl, cur_focus, entry);
1160                 TAILQ_INSERT_HEAD(wl, cur_focus, entry);
1161                 break;
1162         default:
1163                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
1164                 return;
1165         }
1166
1167         ignore_enter = 2;
1168         stack();
1169 }
1170
1171 void
1172 focus(struct swm_region *r, union arg *args)
1173 {
1174         struct ws_win           *winfocus, *winlostfocus;
1175         struct ws_win_list      *wl;
1176
1177         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
1178         if (cur_focus == NULL)
1179                 return;
1180
1181         wl = &cur_focus->ws->winlist;
1182
1183         winlostfocus = cur_focus;
1184
1185         switch (args->id) {
1186         case SWM_ARG_ID_FOCUSPREV:
1187                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1188                 if (winfocus == NULL)
1189                         winfocus = TAILQ_LAST(wl, ws_win_list);
1190                 break;
1191
1192         case SWM_ARG_ID_FOCUSNEXT:
1193                 winfocus = TAILQ_NEXT(cur_focus, entry);
1194                 if (winfocus == NULL)
1195                         winfocus = TAILQ_FIRST(wl);
1196                 break;
1197
1198         case SWM_ARG_ID_FOCUSMAIN:
1199                 winfocus = TAILQ_FIRST(wl);
1200                 break;
1201
1202         default:
1203                 return;
1204         }
1205
1206         if (winfocus == winlostfocus || winfocus == NULL)
1207                 return;
1208
1209         XMapRaised(display, winfocus->id);
1210         focus_win(winfocus);
1211         XSync(display, False);
1212 }
1213
1214 void
1215 cycle_layout(struct swm_region *r, union arg *args)
1216 {
1217         struct workspace        *ws = r->ws;
1218
1219         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1220
1221         ws->cur_layout++;
1222         if (ws->cur_layout->l_stack == NULL)
1223                 ws->cur_layout = &layouts[0];
1224         ignore_enter = 1;
1225         stack();
1226 }
1227
1228 void
1229 stack_config(struct swm_region *r, union arg *args)
1230 {
1231         struct workspace        *ws = r->ws;
1232
1233         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1234             args->id, ws->idx);
1235
1236         if (ws->cur_layout->l_config != NULL)
1237                 ws->cur_layout->l_config(ws, args->id);
1238
1239         if (args->id != SWM_ARG_ID_STACKINIT);
1240                 stack();
1241 }
1242
1243 void
1244 stack(void) {
1245         struct swm_geometry     g;
1246         struct swm_region       *r;
1247         int                     i, j;
1248
1249         DNPRINTF(SWM_D_STACK, "stack\n");
1250
1251         for (i = 0; i < ScreenCount(display); i++) {
1252                 j = 0;
1253                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1254                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1255                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1256
1257                         /* start with screen geometry, adjust for bar */
1258                         g = r->g;
1259                         g.w -= 2;
1260                         g.h -= 2;
1261                         if (bar_enabled) {
1262                                 g.y += bar_height;
1263                                 g.h -= bar_height;
1264                         }
1265
1266                         r->ws->restack = 0;
1267                         r->ws->cur_layout->l_stack(r->ws, &g);
1268                 }
1269         }
1270         XSync(display, False);
1271 }
1272
1273 void
1274 stack_floater(struct ws_win *win, struct swm_region *r)
1275 {
1276         unsigned int            mask;
1277         XWindowChanges          wc;
1278
1279         bzero(&wc, sizeof wc);
1280         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1281         wc.border_width = 1;
1282         if (win->transient && (win->quirks & SWM_Q_TRANSSZ)) {
1283                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1284                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1285         }
1286         wc.width = win->g.w;
1287         wc.height = win->g.h;
1288         if (win->manual) {
1289                 wc.x = win->g.x;
1290                 wc.y = win->g.y;
1291         } else {
1292                 wc.x = (WIDTH(r) - win->g.w) / 2;
1293                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1294         }
1295
1296         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1297             win->id, wc.x, wc.y, wc.width, wc.height);
1298
1299         XConfigureWindow(display, win->id, mask, &wc);
1300 }
1301
1302 #define SWAPXY(g)       do {                            \
1303         int tmp;                                        \
1304         tmp = (g)->y; (g)->y = (g)->x; (g)->x = tmp;    \
1305         tmp = (g)->h; (g)->h = (g)->w; (g)->w = tmp;    \
1306 } while (0)
1307 void
1308 stack_master(struct workspace *ws, struct swm_geometry *g, int rot, int flip)
1309 {
1310         XWindowChanges          wc;
1311         struct swm_geometry     win_g, r_g = *g;
1312         struct ws_win           *win, *winfocus;
1313         int                     i, j, s, w_inc, h_inc, w_base, h_base, stacks;
1314         int                     hrh, extra, h_slice, last_h = 0;
1315         int                     split, colno, winno, mwin, msize, mscale;
1316         int                     remain, missing, v_slice;;
1317         unsigned int            mask;
1318
1319         DNPRINTF(SWM_D_STACK, "stack_master: workspace: %d\n rot=%s flip=%s",
1320             ws->idx, rot ? "yes" : "no", flip ? "yes" : "no");
1321
1322         if ((winno = count_win(ws, 0)) == 0)
1323                 return;
1324
1325         if (ws->focus == NULL)
1326                 ws->focus = TAILQ_FIRST(&ws->winlist);
1327         winfocus = cur_focus ? cur_focus : ws->focus;
1328
1329         win = TAILQ_FIRST(&ws->winlist);
1330         if (rot) {
1331                 w_inc = win->sh.width_inc;
1332                 w_base = win->sh.base_width;
1333                 mwin = ws->l_state.horizontal_mwin;
1334                 mscale = ws->l_state.horizontal_msize;
1335                 stacks = ws->l_state.horizontal_stacks;
1336                 SWAPXY(&r_g);
1337         } else {
1338                 w_inc = win->sh.height_inc;
1339                 w_base = win->sh.base_height;
1340                 mwin = ws->l_state.vertical_mwin;
1341                 mscale = ws->l_state.vertical_msize;
1342                 stacks = ws->l_state.vertical_stacks;
1343         }
1344         win_g = r_g;
1345
1346         if (stacks > winno - mwin)
1347                 stacks = winno - mwin;
1348
1349         h_slice = r_g.h / SWM_H_SLICE;
1350         if (mwin && winno > mwin) {
1351                 v_slice = r_g.w / SWM_V_SLICE;
1352
1353                 split = mwin;
1354                 colno = split;
1355                 win_g.w = v_slice * mscale;
1356
1357                 if (w_inc > 1 && w_inc < v_slice) {
1358                         /* adjust for window's requested size increment */
1359                         remain = (win_g.w - w_base) % w_inc;
1360                         missing = w_inc - remain;
1361
1362                         if (missing <= extra || j == 0) {
1363                                 extra -= missing;
1364                                 win_g.w += missing;
1365                         } else {
1366                                 win_g.w -= remain;
1367                                 extra += remain;
1368                         }
1369                 }
1370
1371                 msize = win_g.w;
1372                 if (flip)
1373                         win_g.x += r_g.w - msize;
1374         } else {
1375                 if (stacks > 1) {
1376                         colno = split = (winno - mwin) / stacks;
1377                 } else {
1378                         split = 0;
1379                         colno = winno;
1380                 }
1381         }
1382         hrh = r_g.h / colno;
1383         extra = r_g.h - (colno * hrh);
1384         win_g.h = hrh - 2;
1385
1386         /*  stack all the tiled windows */
1387         i = j = 0, s = stacks;
1388         TAILQ_FOREACH(win, &ws->winlist, entry) {
1389                 if (win->transient != 0 || win->floating != 0)
1390                         continue;
1391
1392                 if (split && i == split) {
1393                         colno = (winno - split) / s;
1394                         if (stacks == 1)
1395                                 colno += (winno - split) % s;
1396                         split = split + colno;
1397                         hrh = (r_g.h / colno);
1398                         extra = r_g.h - (colno * hrh);
1399                         if (flip)
1400                                 win_g.x = r_g.x;
1401                         else
1402                                 win_g.x += win_g.w + 2;
1403                         win_g.w = (r_g.w - (msize + 2) - (stacks * 2)) / stacks;
1404                         s--;
1405                         j = 0;
1406                 }
1407                 win_g.h = hrh - 2;
1408                 if (rot) {
1409                         h_inc = win->sh.width_inc;
1410                         h_base = win->sh.base_width;
1411                 } else {
1412                         h_inc = win->sh.height_inc;
1413                         h_base = win->sh.base_height;
1414                 }
1415                 if (j == colno - 1) {
1416                         win_g.h = hrh + extra;
1417                 } else if (h_inc > 1 && h_inc < h_slice) {
1418                         /* adjust for window's requested size increment */
1419                         remain = (win_g.h - h_base) % h_inc;
1420                         missing = h_inc - remain;
1421
1422                         if (missing <= extra || j == 0) {
1423                                 extra -= missing;
1424                                 win_g.h += missing;
1425                         } else {
1426                                 win_g.h -= remain;
1427                                 extra += remain;
1428                         }
1429                 }
1430
1431                 if (j == 0)
1432                         win_g.y = r_g.y;
1433                 else
1434                         win_g.y += last_h + 2;
1435
1436                 bzero(&wc, sizeof wc);
1437                 wc.border_width = 1;
1438                 if (rot) {
1439                         win->g.x = wc.x = win_g.y;
1440                         win->g.y = wc.y = win_g.x;
1441                         win->g.w = wc.width = win_g.h;
1442                         win->g.h = wc.height = win_g.w;
1443                 } else {
1444                         win->g.x = wc.x = win_g.x;
1445                         win->g.y = wc.y = win_g.y;
1446                         win->g.w = wc.width = win_g.w;
1447                         win->g.h = wc.height = win_g.h;
1448                 }
1449                 mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1450                 XConfigureWindow(display, win->id, mask, &wc);
1451                 XMapRaised(display, win->id);
1452
1453                 last_h = win_g.h;
1454                 i++;
1455                 j++;
1456         }
1457
1458         /* now, stack all the floaters and transients */
1459         TAILQ_FOREACH(win, &ws->winlist, entry) {
1460                 if (win->transient == 0 && win->floating == 0)
1461                         continue;
1462
1463                 stack_floater(win, ws->r);
1464                 XMapRaised(display, win->id);
1465         }
1466
1467         if (winfocus)
1468                 focus_win(winfocus); /* has to be done outside of the loop */
1469 }
1470
1471 void
1472 vertical_config(struct workspace *ws, int id)
1473 {
1474         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1475
1476         switch (id) {
1477         case SWM_ARG_ID_STACKRESET:
1478         case SWM_ARG_ID_STACKINIT:
1479                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1480                 ws->l_state.vertical_mwin = 1;
1481                 ws->l_state.vertical_stacks = 1;
1482                 break;
1483         case SWM_ARG_ID_MASTERSHRINK:
1484                 if (ws->l_state.vertical_msize > 1)
1485                         ws->l_state.vertical_msize--;
1486                 break;
1487         case SWM_ARG_ID_MASTERGROW:
1488                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1489                         ws->l_state.vertical_msize++;
1490                 break;
1491         case SWM_ARG_ID_MASTERADD:
1492                 ws->l_state.vertical_mwin++;
1493                 break;
1494         case SWM_ARG_ID_MASTERDEL:
1495                 if (ws->l_state.vertical_mwin > 0)
1496                         ws->l_state.vertical_mwin--;
1497         case SWM_ARG_ID_COLINC:
1498                 ws->l_state.vertical_stacks++;
1499                 break;
1500         case SWM_ARG_ID_COLDEC:
1501                 if (ws->l_state.vertical_stacks > 1)
1502                         ws->l_state.vertical_stacks--;
1503                 break;
1504         default:
1505                 return;
1506         }
1507 }
1508
1509 void
1510 vertical_stack(struct workspace *ws, struct swm_geometry *g)
1511 {
1512         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1513
1514         stack_master(ws, g, 0, 0);
1515 }
1516
1517 void
1518 horizontal_config(struct workspace *ws, int id)
1519 {
1520         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1521
1522         switch (id) {
1523         case SWM_ARG_ID_STACKRESET:
1524         case SWM_ARG_ID_STACKINIT:
1525                 ws->l_state.horizontal_mwin = 1;
1526                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1527                 ws->l_state.horizontal_stacks = 1;
1528                 break;
1529         case SWM_ARG_ID_MASTERSHRINK:
1530                 if (ws->l_state.horizontal_msize > 1)
1531                         ws->l_state.horizontal_msize--;
1532                 break;
1533         case SWM_ARG_ID_MASTERGROW:
1534                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1535                         ws->l_state.horizontal_msize++;
1536                 break;
1537         case SWM_ARG_ID_MASTERADD:
1538                 ws->l_state.horizontal_mwin++;
1539                 break;
1540         case SWM_ARG_ID_MASTERDEL:
1541                 if (ws->l_state.horizontal_mwin > 0)
1542                         ws->l_state.horizontal_mwin--;
1543                 break;
1544         case SWM_ARG_ID_COLINC:
1545                 ws->l_state.horizontal_stacks++;
1546                 break;
1547         case SWM_ARG_ID_COLDEC:
1548                 if (ws->l_state.horizontal_stacks > 1)
1549                         ws->l_state.horizontal_stacks--;
1550         default:
1551                 return;
1552         }
1553 }
1554
1555 void
1556 horizontal_stack(struct workspace *ws, struct swm_geometry *g)
1557 {
1558         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1559
1560         stack_master(ws, g, 1, 0);
1561 }
1562
1563 /* fullscreen view */
1564 void
1565 max_stack(struct workspace *ws, struct swm_geometry *g) {
1566         XWindowChanges          wc;
1567         struct swm_geometry     gg = *g;
1568         struct ws_win           *win, *winfocus;
1569         unsigned int            mask;
1570
1571         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1572
1573         if (count_win(ws, 0) == 0)
1574                 return;
1575
1576         if (ws->focus == NULL)
1577                 ws->focus = TAILQ_FIRST(&ws->winlist);
1578         winfocus = cur_focus ? cur_focus : ws->focus;
1579
1580         TAILQ_FOREACH(win, &ws->winlist, entry) {
1581                 if (win->transient != 0 || win->floating != 0) {
1582                         if (win == ws->focus) {
1583                                 /* XXX maximize? */
1584                                 stack_floater(win, ws->r);
1585                                 XMapRaised(display, win->id);
1586                         } else
1587                                 XUnmapWindow(display, win->id);
1588                 } else {
1589                         bzero(&wc, sizeof wc);
1590                         wc.border_width = 1;
1591                         win->g.x = wc.x = gg.x;
1592                         win->g.y = wc.y = gg.y;
1593                         win->g.w = wc.width = gg.w;
1594                         win->g.h = wc.height = gg.h;
1595                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1596                         XConfigureWindow(display, win->id, mask, &wc);
1597
1598                         if (win == ws->focus) {
1599                                 XMapRaised(display, win->id);
1600                         } else
1601                                 XUnmapWindow(display, win->id);
1602                 }
1603         }
1604
1605         if (winfocus)
1606                 focus_win(winfocus); /* has to be done outside of the loop */
1607 }
1608
1609 void
1610 send_to_ws(struct swm_region *r, union arg *args)
1611 {
1612         int                     wsid = args->id;
1613         struct ws_win           *win = cur_focus;
1614         struct workspace        *ws, *nws;
1615         Atom                    ws_idx_atom = 0;
1616         unsigned char           ws_idx_str[SWM_PROPLEN];
1617
1618         if (win == NULL)
1619                 return;
1620
1621         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1622
1623         ws = win->ws;
1624         nws = &win->s->ws[wsid];
1625
1626         XUnmapWindow(display, win->id);
1627
1628         /* find a window to focus */
1629         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1630         if (ws->focus == NULL)
1631                 ws->focus = TAILQ_FIRST(&ws->winlist);
1632         if (ws->focus == win)
1633                 ws->focus = NULL;
1634
1635         TAILQ_REMOVE(&ws->winlist, win, entry);
1636
1637         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1638         win->ws = nws;
1639
1640         /* Try to update the window's workspace property */
1641         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1642         if (ws_idx_atom &&
1643             snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
1644                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1645                     ws_idx_str);
1646                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1647                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1648         }
1649
1650         if (count_win(nws, 1) == 1)
1651                 nws->focus = win;
1652         ws->restack = 1;
1653         nws->restack = 1;
1654
1655         stack();
1656 }
1657
1658 void
1659 wkill(struct swm_region *r, union arg *args)
1660 {
1661         DNPRINTF(SWM_D_MISC, "wkill\n");
1662         if(r->ws->focus != NULL)
1663                 XKillClient(display, r->ws->focus->id);
1664 }
1665
1666 void
1667 screenshot(struct swm_region *r, union arg *args)
1668 {
1669         union arg                       a;
1670
1671         DNPRINTF(SWM_D_MISC, "screenshot\n");
1672
1673         if (ss_enabled == 0)
1674                 return;
1675
1676         switch (args->id) {
1677         case SWM_ARG_ID_SS_ALL:
1678                 spawn_screenshot[1] = "full";
1679                 break;
1680         case SWM_ARG_ID_SS_WINDOW:
1681                 spawn_screenshot[1] = "window";
1682                 break;
1683         default:
1684                 return;
1685         }
1686         a.argv = spawn_screenshot;
1687         spawn(r, &a);
1688 }
1689
1690 void
1691 floating_toggle(struct swm_region *r, union arg *args)
1692 {
1693         struct ws_win   *win = cur_focus;
1694
1695         if (win == NULL)
1696                 return;
1697
1698         win->floating = !win->floating;
1699         win->manual = 0;
1700         stack();
1701         focus_win(win);
1702 }
1703
1704 /* key definitions */
1705 struct key {
1706         unsigned int            mod;
1707         KeySym                  keysym;
1708         void                    (*func)(struct swm_region *r, union arg *);
1709         union arg               args;
1710 } keys[] = {
1711         /* modifier             key     function                argument */
1712         { MODKEY,               XK_space,       cycle_layout,   {0} },
1713         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1714         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1715         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1716         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1717         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1718         { MODKEY | ShiftMask,   XK_comma,       stack_config,   {.id = SWM_ARG_ID_COLINC} },
1719         { MODKEY | ShiftMask,   XK_period,      stack_config,   {.id = SWM_ARG_ID_COLDEC} },
1720         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1721         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1722         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1723         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1724         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1725         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1726         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1727         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1728         { MODKEY,               XK_q,           restart,        {0} },
1729         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1730         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1731         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1732         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1733         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1734         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1735         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1736         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1737         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1738         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1739         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1740         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1741         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1742         { MODKEY | ShiftMask,   XK_Right,       cyclescr,       {.id = SWM_ARG_ID_CYCLESC_UP} },
1743         { MODKEY | ShiftMask,   XK_Left,        cyclescr,       {.id = SWM_ARG_ID_CYCLESC_DOWN} },
1744         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1745         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1746         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1747         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1748         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1749         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1750         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1751         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1752         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1753         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1754         { MODKEY,               XK_b,           bar_toggle,     {0} },
1755         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1756         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1757         { MODKEY | ShiftMask,   XK_x,           wkill,          {0} },
1758         { MODKEY,               XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_ALL} },
1759         { MODKEY | ShiftMask,   XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_WINDOW} },
1760         { MODKEY,               XK_t,           floating_toggle,{0} },
1761         { MODKEY | ShiftMask,   XK_v,           version,        {0} },
1762         { MODKEY | ShiftMask,   XK_Delete,      spawn,          {.argv = spawn_lock} },
1763 };
1764
1765 void
1766 resize_window(struct ws_win *win, int center)
1767 {
1768         unsigned int            mask;
1769         XWindowChanges          wc;
1770         struct swm_region       *r;
1771
1772         r = root_to_region(win->wa.root);
1773         bzero(&wc, sizeof wc);
1774         mask = CWBorderWidth | CWWidth | CWHeight;
1775         wc.border_width = 1;
1776         wc.width = win->g.w;
1777         wc.height = win->g.h;
1778         if (center == SWM_ARG_ID_CENTER) {
1779                 wc.x = (WIDTH(r) - win->g.w) / 2;
1780                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1781                 mask |= CWX | CWY;
1782         }
1783
1784         DNPRINTF(SWM_D_STACK, "resize_window: win %lu x %d y %d w %d h %d\n",
1785             win->id, wc.x, wc.y, wc.width, wc.height);
1786
1787         XConfigureWindow(display, win->id, mask, &wc);
1788         config_win(win);
1789 }
1790
1791 void
1792 resize(struct ws_win *win, union arg *args)
1793 {
1794         XEvent                  ev;
1795         Time                    time = 0;
1796
1797         DNPRINTF(SWM_D_MOUSE, "resize: win %lu floating %d trans %d\n",
1798             win->id, win->floating, win->transient);
1799
1800         if (!(win->transient != 0 || win->floating != 0))
1801                 return;
1802
1803         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
1804             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
1805                 return;
1806         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w, win->g.h);
1807         do {
1808                 XMaskEvent(display, MOUSEMASK | ExposureMask |
1809                     SubstructureRedirectMask, &ev);
1810                 switch(ev.type) {
1811                 case ConfigureRequest:
1812                 case Expose:
1813                 case MapRequest:
1814                         handler[ev.type](&ev);
1815                         break;
1816                 case MotionNotify:
1817                         if (ev.xmotion.x < 0)
1818                                 ev.xmotion.x = 0;
1819                         if (ev.xmotion.y < 0)
1820                                 ev.xmotion.y = 0;
1821                         win->g.w = ev.xmotion.x;
1822                         win->g.h = ev.xmotion.y;
1823
1824                         /* not free, don't sync more than 60 times / second */
1825                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
1826                                 time = ev.xmotion.time;
1827                                 XSync(display, False);
1828                                 resize_window(win, args->id);
1829                         }
1830                         break;
1831                 }
1832         } while (ev.type != ButtonRelease);
1833         if (time) {
1834                 XSync(display, False);
1835                 resize_window(win, args->id);
1836         }
1837         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w - 1,
1838             win->g.h - 1);
1839         XUngrabPointer(display, CurrentTime);
1840
1841         /* drain events */
1842         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
1843 }
1844
1845 void
1846 move_window(struct ws_win *win)
1847 {
1848         unsigned int            mask;
1849         XWindowChanges          wc;
1850         struct swm_region       *r;
1851
1852         r = root_to_region(win->wa.root);
1853         bzero(&wc, sizeof wc);
1854         mask = CWX | CWY;
1855         wc.x = win->g.x;
1856         wc.y = win->g.y;
1857
1858         DNPRINTF(SWM_D_STACK, "move_window: win %lu x %d y %d w %d h %d\n",
1859             win->id, wc.x, wc.y, wc.width, wc.height);
1860
1861         XConfigureWindow(display, win->id, mask, &wc);
1862         config_win(win);
1863 }
1864
1865 void
1866 move(struct ws_win *win, union arg *args)
1867 {
1868         XEvent                  ev;
1869         Time                    time = 0;
1870         int                     restack = 0;
1871
1872         DNPRINTF(SWM_D_MOUSE, "move: win %lu floating %d trans %d\n",
1873             win->id, win->floating, win->transient);
1874
1875         if (win->floating == 0) {
1876                 win->floating = 1;
1877                 win->manual = 1;
1878                 restack = 1;
1879         }
1880
1881         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
1882             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
1883                 return;
1884         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
1885         do {
1886                 XMaskEvent(display, MOUSEMASK | ExposureMask |
1887                     SubstructureRedirectMask, &ev);
1888                 switch(ev.type) {
1889                 case ConfigureRequest:
1890                 case Expose:
1891                 case MapRequest:
1892                         handler[ev.type](&ev);
1893                         break;
1894                 case MotionNotify:
1895                         win->g.x = ev.xmotion.x_root;
1896                         win->g.y = ev.xmotion.y_root;
1897
1898                         /* not free, don't sync more than 60 times / second */
1899                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
1900                                 time = ev.xmotion.time;
1901                                 XSync(display, False);
1902                                 move_window(win);
1903                         }
1904                         break;
1905                 }
1906         } while (ev.type != ButtonRelease);
1907         if (time) {
1908                 XSync(display, False);
1909                 move_window(win);
1910         }
1911         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
1912         XUngrabPointer(display, CurrentTime);
1913         if (restack)
1914                 stack();
1915
1916         /* drain events */
1917         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
1918 }
1919
1920 /* mouse */
1921 enum { client_click, root_click };
1922 struct button {
1923         unsigned int            action;
1924         unsigned int            mask;
1925         unsigned int            button;
1926         void                    (*func)(struct ws_win *, union arg *);
1927         union arg               args;
1928 } buttons[] = {
1929           /* action             key             mouse button    func            args */
1930         { client_click,         MODKEY,         Button3,        resize,         {.id = SWM_ARG_ID_DONTCENTER} },
1931         { client_click,         MODKEY | ShiftMask, Button3,    resize,         {.id = SWM_ARG_ID_CENTER} },
1932         { client_click,         MODKEY,         Button1,        move,           {0} },
1933 };
1934
1935 void
1936 updatenumlockmask(void)
1937 {
1938         unsigned int            i, j;
1939         XModifierKeymap         *modmap;
1940
1941         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1942         numlockmask = 0;
1943         modmap = XGetModifierMapping(display);
1944         for (i = 0; i < 8; i++)
1945                 for (j = 0; j < modmap->max_keypermod; j++)
1946                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1947                           == XKeysymToKeycode(display, XK_Num_Lock))
1948                                 numlockmask = (1 << i);
1949
1950         XFreeModifiermap(modmap);
1951 }
1952
1953 void
1954 grabkeys(void)
1955 {
1956         unsigned int            i, j, k;
1957         KeyCode                 code;
1958         unsigned int            modifiers[] =
1959             { 0, LockMask, numlockmask, numlockmask | LockMask };
1960
1961         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1962         updatenumlockmask();
1963
1964         for (k = 0; k < ScreenCount(display); k++) {
1965                 if (TAILQ_EMPTY(&screens[k].rl))
1966                         continue;
1967                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1968                 for (i = 0; i < LENGTH(keys); i++) {
1969                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1970                                 for (j = 0; j < LENGTH(modifiers); j++)
1971                                         XGrabKey(display, code,
1972                                             keys[i].mod | modifiers[j],
1973                                             screens[k].root, True,
1974                                             GrabModeAsync, GrabModeAsync);
1975                 }
1976         }
1977 }
1978
1979 void
1980 grabbuttons(struct ws_win *win, int focused)
1981 {
1982         unsigned int            i, j;
1983         unsigned int            modifiers[] =
1984             { 0, LockMask, numlockmask, numlockmask|LockMask };
1985
1986         updatenumlockmask();
1987         XUngrabButton(display, AnyButton, AnyModifier, win->id);
1988         if(focused) {
1989                 for (i = 0; i < LENGTH(buttons); i++)
1990                         if (buttons[i].action == client_click)
1991                                 for (j = 0; j < LENGTH(modifiers); j++)
1992                                         XGrabButton(display, buttons[i].button,
1993                                             buttons[i].mask | modifiers[j],
1994                                             win->id, False, BUTTONMASK,
1995                                             GrabModeAsync, GrabModeSync, None,
1996                                             None);
1997         } else
1998                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
1999                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
2000 }
2001
2002 void
2003 expose(XEvent *e)
2004 {
2005         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
2006 }
2007
2008 void
2009 keypress(XEvent *e)
2010 {
2011         unsigned int            i;
2012         KeySym                  keysym;
2013         XKeyEvent               *ev = &e->xkey;
2014
2015         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
2016
2017         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
2018         for (i = 0; i < LENGTH(keys); i++)
2019                 if (keysym == keys[i].keysym
2020                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
2021                    && keys[i].func)
2022                         keys[i].func(root_to_region(ev->root),
2023                             &(keys[i].args));
2024 }
2025
2026 void
2027 buttonpress(XEvent *e)
2028 {
2029         XButtonPressedEvent     *ev = &e->xbutton;
2030
2031         struct ws_win           *win;
2032         int                     i, action;
2033
2034         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
2035
2036         action = root_click;
2037         if ((win = find_window(ev->window)) == NULL)
2038                 return;
2039         else {
2040                 focus_win(win);
2041                 action = client_click;
2042         }
2043
2044         for (i = 0; i < LENGTH(buttons); i++)
2045                 if (action == buttons[i].action && buttons[i].func &&
2046                     buttons[i].button == ev->button &&
2047                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
2048                         buttons[i].func(win, &buttons[i].args);
2049 }
2050
2051 void
2052 set_win_state(struct ws_win *win, long state)
2053 {
2054         long                    data[] = {state, None};
2055
2056         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
2057
2058         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
2059             (unsigned char *)data, 2);
2060 }
2061
2062 struct ws_win *
2063 manage_window(Window id)
2064 {
2065         Window                  trans;
2066         struct workspace        *ws;
2067         struct ws_win           *win;
2068         int                     format, i, ws_idx;
2069         unsigned long           nitems, bytes;
2070         Atom                    ws_idx_atom = 0, type;
2071         unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
2072         struct swm_region       *r;
2073         long                    mask;
2074         const char              *errstr;
2075
2076         if ((win = find_window(id)) != NULL)
2077                         return (win);   /* already being managed */
2078
2079         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
2080                 errx(1, "calloc: failed to allocate memory for new window");
2081
2082         /* Get all the window data in one shot */
2083         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2084         if (ws_idx_atom)
2085                 XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
2086                     False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
2087         XGetWindowAttributes(display, id, &win->wa);
2088         XGetTransientForHint(display, id, &trans);
2089         XGetWMNormalHints(display, id, &win->sh, &mask); /* XXX function? */
2090         if (trans) {
2091                 win->transient = trans;
2092                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
2093                     (unsigned)win->id, win->transient);
2094         }
2095
2096         /*
2097          * Figure out where to put the window. If it was previously assigned to
2098          * a workspace (either by spawn() or manually moving), and isn't
2099          * transient, * put it in the same workspace
2100          */
2101         r = root_to_region(win->wa.root);
2102         if (prop && win->transient == 0) {
2103                 DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
2104                 ws_idx = strtonum(prop, 0, 9, &errstr);
2105                 if (errstr) {
2106                         DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
2107                             errstr, prop);
2108                 }
2109                 ws = &r->s->ws[ws_idx];
2110         } else
2111                 ws = r->ws;
2112
2113         /* set up the window layout */
2114         win->id = id;
2115         win->ws = ws;
2116         win->s = r->s;  /* this never changes */
2117         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
2118
2119         win->g.w = win->wa.width;
2120         win->g.h = win->wa.height;
2121         win->g.x = win->wa.x;
2122         win->g.y = win->wa.y;
2123
2124         /* Set window properties so we can remember this after reincarnation */
2125         if (ws_idx_atom && prop == NULL &&
2126             snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
2127                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
2128                     ws_idx_str);
2129                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
2130                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
2131         }
2132         XFree(prop);
2133
2134         if (XGetClassHint(display, win->id, &win->ch)) {
2135                 DNPRINTF(SWM_D_CLASS, "class: %s name: %s\n",
2136                     win->ch.res_class, win->ch.res_name);
2137                 for (i = 0; quirks[i].class != NULL && quirks[i].name != NULL &&
2138                     quirks[i].quirk != 0; i++){
2139                         if (!strcmp(win->ch.res_class, quirks[i].class) &&
2140                             !strcmp(win->ch.res_name, quirks[i].name)) {
2141                                 DNPRINTF(SWM_D_CLASS, "found: %s name: %s\n",
2142                                     win->ch.res_class, win->ch.res_name);
2143                                 if (quirks[i].quirk & SWM_Q_FLOAT)
2144                                         win->floating = 1;
2145                                 win->quirks = quirks[i].quirk;
2146                         }
2147                 }
2148         }
2149
2150         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
2151             PropertyChangeMask | StructureNotifyMask);
2152
2153         set_win_state(win, NormalState);
2154
2155         /* make new win focused */
2156         focus_win(win);
2157
2158         return (win);
2159 }
2160
2161 void
2162 unmanage_window(struct ws_win *win)
2163 {
2164         struct workspace        *ws;
2165
2166         if (win == NULL)
2167                 return;
2168
2169         DNPRINTF(SWM_D_MISC, "unmanage_window:  %lu\n", win->id);
2170
2171         /* don't unmanage if we are switching workspaces */
2172         ws = win->ws;
2173         if (ws->restack)
2174                 return;
2175
2176         /* find a window to focus */
2177         if (ws->focus == win)
2178                 ws->focus = TAILQ_PREV(win, ws_win_list, entry);
2179         if (ws->focus == NULL)
2180                 ws->focus = TAILQ_FIRST(&ws->winlist);
2181         if (ws->focus == NULL || ws->focus == win) {
2182                 ws->focus = NULL;
2183                 unfocus_all();
2184         } else
2185                 focus_win(ws->focus);
2186
2187         TAILQ_REMOVE(&win->ws->winlist, win, entry);
2188         set_win_state(win, WithdrawnState);
2189         if (win->ch.res_class)
2190                 XFree(win->ch.res_class);
2191         if (win->ch.res_name)
2192                 XFree(win->ch.res_name);
2193         free(win);
2194 }
2195
2196 void
2197 configurerequest(XEvent *e)
2198 {
2199         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
2200         struct ws_win           *win;
2201         int                     new = 0;
2202         XWindowChanges          wc;
2203
2204         if ((win = find_window(ev->window)) == NULL)
2205                 new = 1;
2206
2207         if (new) {
2208                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
2209                     ev->window);
2210                 bzero(&wc, sizeof wc);
2211                 wc.x = ev->x;
2212                 wc.y = ev->y;
2213                 wc.width = ev->width;
2214                 wc.height = ev->height;
2215                 wc.border_width = ev->border_width;
2216                 wc.sibling = ev->above;
2217                 wc.stack_mode = ev->detail;
2218                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
2219         } else {
2220                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
2221                     ev->window);
2222                 if (win->floating) {
2223                         if (ev->value_mask & CWX)
2224                                 win->g.x = ev->x;
2225                         if (ev->value_mask & CWY)
2226                                 win->g.y = ev->y;
2227                         if (ev->value_mask & CWWidth)
2228                                 win->g.w = ev->width;
2229                         if (ev->value_mask & CWHeight)
2230                                 win->g.h = ev->height;
2231                         if (win->ws->r != NULL) {
2232                                 /* this seems to be full screen */
2233                                 if (win->g.w >= WIDTH(win->ws->r)) {
2234                                         win->g.x = -1;
2235                                         win->g.w = WIDTH(win->ws->r);
2236                                         ev->value_mask |= CWX | CWWidth;
2237                                 }
2238                                 if (win->g.h >= HEIGHT(win->ws->r)) {
2239                                         /* kill border */
2240                                         win->g.y = -1;
2241                                         win->g.h = HEIGHT(win->ws->r);
2242                                         ev->value_mask |= CWY | CWHeight;
2243                                 }
2244                         }
2245                         if ((ev->value_mask & (CWX|CWY)) &&
2246                             !(ev->value_mask & (CWWidth|CWHeight)))
2247                                 config_win(win);
2248                         XMoveResizeWindow(display, win->id,
2249                             win->g.x, win->g.y, win->g.w, win->g.h);
2250                 } else
2251                         config_win(win);
2252         }
2253 }
2254
2255 void
2256 configurenotify(XEvent *e)
2257 {
2258         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
2259             e->xconfigure.window);
2260 }
2261
2262 void
2263 destroynotify(XEvent *e)
2264 {
2265         struct ws_win           *win;
2266         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2267
2268         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
2269
2270         if ((win = find_window(ev->window)) != NULL) {
2271                 unmanage_window(win);
2272                 stack();
2273         }
2274 }
2275
2276 void
2277 enternotify(XEvent *e)
2278 {
2279         XCrossingEvent          *ev = &e->xcrossing;
2280         struct ws_win           *win;
2281
2282         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
2283
2284         if (ignore_enter) {
2285                 /* eat event(r) to prevent autofocus */
2286                 ignore_enter--;
2287                 return;
2288         }
2289
2290         if ((win = find_window(ev->window)) != NULL)
2291                 focus_win(win);
2292 }
2293
2294 void
2295 focusin(XEvent *e)
2296 {
2297         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
2298 }
2299
2300 void
2301 mappingnotify(XEvent *e)
2302 {
2303         XMappingEvent           *ev = &e->xmapping;
2304
2305         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
2306
2307         XRefreshKeyboardMapping(ev);
2308         if (ev->request == MappingKeyboard)
2309                 grabkeys();
2310 }
2311
2312 void
2313 maprequest(XEvent *e)
2314 {
2315         XMapRequestEvent        *ev = &e->xmaprequest;
2316         XWindowAttributes       wa;
2317
2318         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
2319             e->xmaprequest.window);
2320
2321         if (!XGetWindowAttributes(display, ev->window, &wa))
2322                 return;
2323         if (wa.override_redirect)
2324                 return;
2325         manage_window(e->xmaprequest.window);
2326         stack();
2327 }
2328
2329 void
2330 propertynotify(XEvent *e)
2331 {
2332         struct ws_win           *win;
2333         XPropertyEvent          *ev = &e->xproperty;
2334
2335         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
2336             ev->window);
2337
2338         if (ev->state == PropertyDelete)
2339                 return; /* ignore */
2340         win = find_window(ev->window);
2341         if (win == NULL)
2342                 return;
2343
2344         switch (ev->atom) {
2345         case XA_WM_NORMAL_HINTS:
2346 #if 0
2347                 long            mask;
2348                 XGetWMNormalHints(display, win->id, &win->sh, &mask);
2349                 fprintf(stderr, "normal hints: flag 0x%x\n", win->sh.flags);
2350                 if (win->sh.flags & PMinSize) {
2351                         win->g.w = win->sh.min_width;
2352                         win->g.h = win->sh.min_height;
2353                         fprintf(stderr, "min %d %d\n", win->g.w, win->g.h);
2354                 }
2355                 XMoveResizeWindow(display, win->id,
2356                     win->g.x, win->g.y, win->g.w, win->g.h);
2357 #endif
2358                 break;
2359         default:
2360                 break;
2361         }
2362 }
2363
2364 void
2365 unmapnotify(XEvent *e)
2366 {
2367         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2368         struct ws_win           *win;
2369
2370         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
2371
2372         if ((win = find_window(ev->window)) != NULL)
2373                 if (win->transient)
2374                         unmanage_window(win);
2375 }
2376
2377 void
2378 visibilitynotify(XEvent *e)
2379 {
2380         int                     i;
2381         struct swm_region       *r;
2382
2383         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
2384             e->xvisibility.window);
2385         if (e->xvisibility.state == VisibilityUnobscured)
2386                 for (i = 0; i < ScreenCount(display); i++)
2387                         TAILQ_FOREACH(r, &screens[i].rl, entry)
2388                                 if (e->xvisibility.window == r->bar_window)
2389                                         bar_update();
2390 }
2391
2392 int
2393 xerror_start(Display *d, XErrorEvent *ee)
2394 {
2395         other_wm = 1;
2396         return (-1);
2397 }
2398
2399 int
2400 xerror(Display *d, XErrorEvent *ee)
2401 {
2402         /* fprintf(stderr, "error: %p %p\n", display, ee); */
2403         return (-1);
2404 }
2405
2406 int
2407 active_wm(void)
2408 {
2409         other_wm = 0;
2410         xerrorxlib = XSetErrorHandler(xerror_start);
2411
2412         /* this causes an error if some other window manager is running */
2413         XSelectInput(display, DefaultRootWindow(display),
2414             SubstructureRedirectMask);
2415         XSync(display, False);
2416         if (other_wm)
2417                 return (1);
2418
2419         XSetErrorHandler(xerror);
2420         XSync(display, False);
2421         return (0);
2422 }
2423
2424 long
2425 getstate(Window w)
2426 {
2427         int                     format, status;
2428         long                    result = -1;
2429         unsigned char           *p = NULL;
2430         unsigned long           n, extra;
2431         Atom                    real;
2432
2433         astate = XInternAtom(display, "WM_STATE", False);
2434         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
2435             &real, &format, &n, &extra, (unsigned char **)&p);
2436         if (status != Success)
2437                 return (-1);
2438         if (n != 0)
2439                 result = *p;
2440         XFree(p);
2441         return (result);
2442 }
2443
2444 void
2445 new_region(struct swm_screen *s, int x, int y, int w, int h)
2446 {
2447         struct swm_region       *r, *n;
2448         struct workspace        *ws = NULL;
2449         int                     i;
2450
2451         DNPRINTF(SWM_D_MISC, "new region: screen[%d]:%dx%d+%d+%d\n",
2452              s->idx, w, h, x, y);
2453
2454         /* remove any conflicting regions */
2455         n = TAILQ_FIRST(&s->rl);
2456         while (n) {
2457                 r = n;
2458                 n = TAILQ_NEXT(r, entry);
2459                 if (X(r) < (x + w) &&
2460                     (X(r) + WIDTH(r)) > x &&
2461                     Y(r) < (y + h) &&
2462                     (Y(r) + HEIGHT(r)) > y) {
2463                         XDestroyWindow(display, r->bar_window);
2464                         TAILQ_REMOVE(&s->rl, r, entry);
2465                         TAILQ_INSERT_TAIL(&s->orl, r, entry);
2466                 }
2467         }
2468
2469         /* search old regions for one to reuse */
2470
2471         /* size + location match */
2472         TAILQ_FOREACH(r, &s->orl, entry)
2473                 if (X(r) == x && Y(r) == y &&
2474                     HEIGHT(r) == h && WIDTH(r) == w)
2475                         break;
2476
2477         /* size match */
2478         TAILQ_FOREACH(r, &s->orl, entry)
2479                 if (HEIGHT(r) == h && WIDTH(r) == w)
2480                         break;
2481
2482         if (r != NULL) {
2483                 TAILQ_REMOVE(&s->orl, r, entry);
2484                 /* try to use old region's workspace */
2485                 if (r->ws->r == NULL)
2486                         ws = r->ws;
2487         } else
2488                 if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
2489                         errx(1, "calloc: failed to allocate memory for screen");
2490
2491         /* if we don't have a workspace already, find one */
2492         if (ws == NULL) {
2493                 for (i = 0; i < SWM_WS_MAX; i++)
2494                         if (s->ws[i].r == NULL) {
2495                                 ws = &s->ws[i];
2496                                 break;
2497                         }
2498         }
2499
2500         if (ws == NULL)
2501                 errx(1, "no free workspaces\n");
2502
2503         X(r) = x;
2504         Y(r) = y;
2505         WIDTH(r) = w;
2506         HEIGHT(r) = h;
2507         r->s = s;
2508         r->ws = ws;
2509         ws->r = r;
2510         TAILQ_INSERT_TAIL(&s->rl, r, entry);
2511         bar_setup(r);
2512 }
2513
2514 void
2515 scan_xrandr(int i)
2516 {
2517 #ifdef SWM_XRR_HAS_CRTC
2518         XRRCrtcInfo             *ci;
2519         XRRScreenResources      *sr;
2520         int                     c;
2521         int                     ncrtc = 0;
2522 #endif /* SWM_XRR_HAS_CRTC */
2523         struct swm_region       *r;
2524
2525
2526         if (i >= ScreenCount(display))
2527                 errx(1, "invalid screen");
2528
2529         /* remove any old regions */
2530         while ((r = TAILQ_FIRST(&screens[i].rl)) != NULL) {
2531                 r->ws->r = NULL;
2532                 XDestroyWindow(display, r->bar_window);
2533                 TAILQ_REMOVE(&screens[i].rl, r, entry);
2534                 TAILQ_INSERT_TAIL(&screens[i].orl, r, entry);
2535         }
2536
2537         /* map virtual screens onto physical screens */
2538 #ifdef SWM_XRR_HAS_CRTC
2539         if (xrandr_support) {
2540                 sr = XRRGetScreenResources(display, screens[i].root);
2541                 if (sr == NULL)
2542                         new_region(&screens[i], 0, 0,
2543                             DisplayWidth(display, i),
2544                             DisplayHeight(display, i));
2545                 else
2546                         ncrtc = sr->ncrtc;
2547
2548                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2549                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2550                         if (ci->noutput == 0)
2551                                 continue;
2552
2553                         if (ci != NULL && ci->mode == None)
2554                                 new_region(&screens[i], 0, 0,
2555                                     DisplayWidth(display, i),
2556                                     DisplayHeight(display, i));
2557                         else
2558                                 new_region(&screens[i],
2559                                     ci->x, ci->y, ci->width, ci->height);
2560                 }
2561                 if (ci)
2562                         XRRFreeCrtcInfo(ci);
2563                 XRRFreeScreenResources(sr);
2564         } else
2565 #endif /* SWM_XRR_HAS_CRTC */
2566         {
2567                 new_region(&screens[i], 0, 0, DisplayWidth(display, i),
2568                     DisplayHeight(display, i));
2569         }
2570 }
2571
2572 void
2573 screenchange(XEvent *e) {
2574         XRRScreenChangeNotifyEvent      *xe = (XRRScreenChangeNotifyEvent *)e;
2575         struct swm_region               *r;
2576         struct ws_win                   *win;
2577         int                             i;
2578
2579         DNPRINTF(SWM_D_EVENT, "screenchange: %lu\n", xe->root);
2580
2581         if (!XRRUpdateConfiguration(e))
2582                 return;
2583
2584         /* silly event doesn't include the screen index */
2585         for (i = 0; i < ScreenCount(display); i++)
2586                 if (screens[i].root == xe->root)
2587                         break;
2588         if (i >= ScreenCount(display))
2589                 errx(1, "screenchange: screen not found\n");
2590
2591         /* brute force for now, just re-enumerate the regions */
2592         scan_xrandr(i);
2593
2594         /* hide any windows that went away */
2595         TAILQ_FOREACH(r, &screens[i].rl, entry)
2596                 TAILQ_FOREACH(win, &r->ws->winlist, entry)
2597                         XUnmapWindow(display, win->id);
2598         stack();
2599 }
2600
2601 void
2602 setup_screens(void)
2603 {
2604         Window                  d1, d2, *wins = NULL;
2605         XWindowAttributes       wa;
2606         unsigned int            no;
2607         int                     i, j, k;
2608         int                     errorbase, major, minor;
2609         struct workspace        *ws;
2610         int                     ws_idx_atom;
2611
2612
2613         if ((screens = calloc(ScreenCount(display),
2614              sizeof(struct swm_screen))) == NULL)
2615                 errx(1, "calloc: screens");
2616
2617         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2618
2619         /* initial Xrandr setup */
2620         xrandr_support = XRRQueryExtension(display,
2621             &xrandr_eventbase, &errorbase);
2622         if (xrandr_support)
2623                 if (XRRQueryVersion(display, &major, &minor) && major < 1)
2624                         xrandr_support = 0;
2625
2626         /* map physical screens */
2627         for (i = 0; i < ScreenCount(display); i++) {
2628                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2629                 screens[i].idx = i;
2630                 TAILQ_INIT(&screens[i].rl);
2631                 TAILQ_INIT(&screens[i].orl);
2632                 screens[i].root = RootWindow(display, i);
2633
2634                 /* set default colors */
2635                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2636                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2637                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2638                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2639                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2640
2641                 /* init all workspaces */
2642                 /* XXX these should be dynamically allocated too */
2643                 for (j = 0; j < SWM_WS_MAX; j++) {
2644                         ws = &screens[i].ws[j];
2645                         ws->idx = j;
2646                         ws->restack = 1;
2647                         ws->focus = NULL;
2648                         ws->r = NULL;
2649                         TAILQ_INIT(&ws->winlist);
2650
2651                         for (k = 0; layouts[k].l_stack != NULL; k++)
2652                                 if (layouts[k].l_config != NULL)
2653                                         layouts[k].l_config(ws,
2654                                             SWM_ARG_ID_STACKINIT);
2655                         ws->cur_layout = &layouts[0];
2656                 }
2657                 /* grab existing windows (before we build the bars)*/
2658                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2659                         continue;
2660
2661                 scan_xrandr(i);
2662
2663                 if (xrandr_support)
2664                         XRRSelectInput(display, screens[i].root,
2665                             RRScreenChangeNotifyMask);
2666
2667                 /* attach windows to a region */
2668                 /* normal windows */
2669                 for (j = 0; j < no; j++) {
2670                         XGetWindowAttributes(display, wins[j], &wa);
2671                         if (!XGetWindowAttributes(display, wins[j], &wa) ||
2672                             wa.override_redirect ||
2673                             XGetTransientForHint(display, wins[j], &d1))
2674                                 continue;
2675
2676                         if (wa.map_state == IsViewable ||
2677                             getstate(wins[j]) == NormalState)
2678                                 manage_window(wins[j]);
2679                 }
2680                 /* transient windows */
2681                 for (j = 0; j < no; j++) {
2682                         if (!XGetWindowAttributes(display, wins[j], &wa))
2683                                 continue;
2684
2685                         if (XGetTransientForHint(display, wins[j], &d1) &&
2686                             (wa.map_state == IsViewable || getstate(wins[j]) ==
2687                             NormalState))
2688                                 manage_window(wins[j]);
2689                 }
2690                 if (wins) {
2691                         XFree(wins);
2692                         wins = NULL;
2693                 }
2694         }
2695 }
2696
2697 int
2698 main(int argc, char *argv[])
2699 {
2700         struct passwd           *pwd;
2701         char                    conf[PATH_MAX], *cfile = NULL;
2702         struct stat             sb;
2703         XEvent                  e;
2704         int                     xfd;
2705         fd_set                  rd;
2706
2707         start_argv = argv;
2708         fprintf(stderr, "Welcome to scrotwm V%s cvs tag: %s\n",
2709             SWM_VERSION, cvstag);
2710         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2711                 warnx("no locale support");
2712
2713         if (!(display = XOpenDisplay(0)))
2714                 errx(1, "can not open display");
2715
2716         if (active_wm())
2717                 errx(1, "other wm running");
2718
2719         astate = XInternAtom(display, "WM_STATE", False);
2720
2721         /* look for local and global conf file */
2722         pwd = getpwuid(getuid());
2723         if (pwd == NULL)
2724                 errx(1, "invalid user %d", getuid());
2725
2726         setup_screens();
2727
2728         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2729         if (stat(conf, &sb) != -1) {
2730                 if (S_ISREG(sb.st_mode))
2731                         cfile = conf;
2732         } else {
2733                 /* try global conf file */
2734                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2735                 if (!stat(conf, &sb))
2736                         if (S_ISREG(sb.st_mode))
2737                                 cfile = conf;
2738         }
2739         if (cfile)
2740                 conf_load(cfile);
2741         bar_refresh();
2742
2743         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2744
2745         grabkeys();
2746         stack();
2747
2748         xfd = ConnectionNumber(display);
2749         while (running) {
2750                 FD_ZERO(&rd);
2751                 FD_SET(xfd, &rd);
2752                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2753                         if (errno != EINTR)
2754                                 errx(1, "select failed");
2755                 if (bar_alarm) {
2756                         bar_alarm = 0;
2757                         bar_update();
2758                 }
2759                 while (XPending(display)) {
2760                         XNextEvent(display, &e);
2761                         if (e.type < LASTEvent) {
2762                                 if (handler[e.type])
2763                                         handler[e.type](&e);
2764                                 else
2765                                         DNPRINTF(SWM_D_EVENT,
2766                                             "unkown event: %d\n", e.type);
2767                         } else {
2768                                 switch (e.type - xrandr_eventbase) {
2769                                 case RRScreenChangeNotify:
2770                                         screenchange(&e);
2771                                         break;
2772                                 default:
2773                                         DNPRINTF(SWM_D_EVENT,
2774                                             "unkown event: %d\n", e.type);
2775                                         break;
2776                                 }
2777                         }
2778                 }
2779         }
2780
2781         XCloseDisplay(display);
2782
2783         return (0);
2784 }