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