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     "0.8"
  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_initscr[] = { "initscreen.sh", NULL };
 187 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL, "-nb", NULL,
 188                             "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 189
 190 #define SWM_MENU_FN     (2)
 191 #define SWM_MENU_NB     (4)
 192 #define SWM_MENU_NF     (6)
 193 #define SWM_MENU_SB     (8)
 194 #define SWM_MENU_SF     (10)
 195
 196 /* layout manager data */
 197 struct swm_geometry {
 198         int                     x;
 199         int                     y;
 200         int                     w;
 201         int                     h;
 202 };
 203
 204 struct swm_screen;
 205 struct workspace;
 206
 207 /* virtual "screens" */
 208 struct swm_region {
 209         TAILQ_ENTRY(swm_region) entry;
 210         struct swm_geometry     g;
 211         struct workspace        *ws;    /* current workspace on this region */
 212         struct swm_screen       *s;     /* screen idx */
 213         Window                  bar_window;
 214 };
 215 TAILQ_HEAD(swm_region_list, swm_region);
 216
 217 struct ws_win {
 218         TAILQ_ENTRY(ws_win)     entry;
 219         Window                  id;
 220         struct swm_geometry     g;
 221         int                     got_focus;
 222         int                     floating;
 223         int                     transient;
 224         int                     manual;
 225         unsigned long           quirks;
 226         struct workspace        *ws;    /* always valid */
 227         struct swm_screen       *s;     /* always valid, never changes */
 228         XWindowAttributes       wa;
 229         XSizeHints              sh;
 230         XClassHint              ch;
 231 };
 232 TAILQ_HEAD(ws_win_list, ws_win);
 233
 234 /* layout handlers */
 235 void    stack(void);
 236 void    vertical_config(struct workspace *, int);
 237 void    vertical_stack(struct workspace *, struct swm_geometry *);
 238 void    horizontal_config(struct workspace *, int);
 239 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 240 void    max_stack(struct workspace *, struct swm_geometry *);
 241
 242 void    grabbuttons(struct ws_win *, int);
 243
 244 struct layout {
 245         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 246         void            (*l_config)(struct workspace *, int);
 247 } layouts[] =  {
 248         /* stack,               configure */
 249         { vertical_stack,       vertical_config},
 250         { horizontal_stack,     horizontal_config},
 251         { max_stack,            NULL},
 252         { NULL,                 NULL},
 253 };
 254
 255 #define SWM_H_SLICE             (32)
 256 #define SWM_V_SLICE             (32)
 257
 258 /* define work spaces */
 259 struct workspace {
 260         int                     idx;            /* workspace index */
 261         int                     restack;        /* restack on switch */
 262         struct layout           *cur_layout;    /* current layout handlers */
 263         struct ws_win           *focus;         /* may be NULL */
 264         struct ws_win           *focus_prev;    /* may be NULL */
 265         struct swm_region       *r;             /* may be NULL */
 266         struct ws_win_list      winlist;        /* list of windows in ws */
 267
 268         /* stacker state */
 269         struct {
 270                                 int horizontal_msize;
 271                                 int horizontal_mwin;
 272                                 int horizontal_stacks;
 273                                 int vertical_msize;
 274                                 int vertical_mwin;
 275                                 int vertical_stacks;
 276         } l_state;
 277 };
 278
 279 enum    { SWM_S_COLOR_BAR, SWM_S_COLOR_BAR_BORDER, SWM_S_COLOR_BAR_FONT,
 280           SWM_S_COLOR_FOCUS, SWM_S_COLOR_UNFOCUS, SWM_S_COLOR_MAX };
 281
 282 /* physical screen mapping */
 283 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 284 struct swm_screen {
 285         int                     idx;            /* screen index */
 286         struct swm_region_list  rl;     /* list of regions on this screen */
 287         struct swm_region_list  orl;    /* list of old regions */
 288         Window                  root;
 289         struct workspace        ws[SWM_WS_MAX];
 290
 291         /* colors */
 292         struct {
 293                 unsigned long   color;
 294                 char            *name;
 295         } c[SWM_S_COLOR_MAX];
 296 };
 297 struct swm_screen       *screens;
 298 int                     num_screens;
 299
 300 struct ws_win           *cur_focus = NULL;
 301
 302 /* args to functions */
 303 union arg {
 304         int                     id;
 305 #define SWM_ARG_ID_FOCUSNEXT    (0)
 306 #define SWM_ARG_ID_FOCUSPREV    (1)
 307 #define SWM_ARG_ID_FOCUSMAIN    (2)
 308 #define SWM_ARG_ID_SWAPNEXT     (3)
 309 #define SWM_ARG_ID_SWAPPREV     (4)
 310 #define SWM_ARG_ID_SWAPMAIN     (5)
 311 #define SWM_ARG_ID_MASTERSHRINK (6)
 312 #define SWM_ARG_ID_MASTERGROW   (7)
 313 #define SWM_ARG_ID_MASTERADD    (8)
 314 #define SWM_ARG_ID_MASTERDEL    (9)
 315 #define SWM_ARG_ID_STACKRESET   (10)
 316 #define SWM_ARG_ID_STACKINIT    (11)
 317 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 318 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 319 #define SWM_ARG_ID_CYCLESC_UP   (14)
 320 #define SWM_ARG_ID_CYCLESC_DOWN (15)
 321 #define SWM_ARG_ID_STACKINC     (16)
 322 #define SWM_ARG_ID_STACKDEC     (17)
 323 #define SWM_ARG_ID_SS_ALL       (0)
 324 #define SWM_ARG_ID_SS_WINDOW    (1)
 325 #define SWM_ARG_ID_DONTCENTER   (0)
 326 #define SWM_ARG_ID_CENTER       (1)
 327         char                    **argv;
 328 };
 329
 330 /* quirks */
 331 struct quirk {
 332         char                    *class;
 333         char                    *name;
 334         unsigned long           quirk;
 335 #define SWM_Q_FLOAT             (1<<0)  /* float this window */
 336 #define SWM_Q_TRANSSZ           (1<<1)  /* transiend window size too small */
 337 #define SWM_Q_ANYWHERE          (1<<2)  /* don't position this window */
 338 } quirks[] = {
 339         { "MPlayer",            "xv",           SWM_Q_FLOAT },
 340         { "OpenOffice.org 2.4", "VCLSalFrame",  SWM_Q_FLOAT },
 341         { "OpenOffice.org 3.0", "VCLSalFrame",  SWM_Q_FLOAT },
 342         { "Firefox-bin",        "firefox-bin",  SWM_Q_TRANSSZ},
 343         { "Gimp",               "gimp",         SWM_Q_FLOAT | SWM_Q_ANYWHERE},
 344         { NULL,                 NULL,           0},
 345 };
 346
 347 /* events */
 348 void                    expose(XEvent *);
 349 void                    keypress(XEvent *);
 350 void                    buttonpress(XEvent *);
 351 void                    configurerequest(XEvent *);
 352 void                    configurenotify(XEvent *);
 353 void                    destroynotify(XEvent *);
 354 void                    enternotify(XEvent *);
 355 void                    focusin(XEvent *);
 356 void                    mappingnotify(XEvent *);
 357 void                    maprequest(XEvent *);
 358 void                    propertynotify(XEvent *);
 359 void                    unmapnotify(XEvent *);
 360 void                    visibilitynotify(XEvent *);
 361
 362 void                    (*handler[LASTEvent])(XEvent *) = {
 363                                 [Expose] = expose,
 364                                 [KeyPress] = keypress,
 365                                 [ButtonPress] = buttonpress,
 366                                 [ConfigureRequest] = configurerequest,
 367                                 [ConfigureNotify] = configurenotify,
 368                                 [DestroyNotify] = destroynotify,
 369                                 [EnterNotify] = enternotify,
 370                                 [FocusIn] = focusin,
 371                                 [MappingNotify] = mappingnotify,
 372                                 [MapRequest] = maprequest,
 373                                 [PropertyNotify] = propertynotify,
 374                                 [UnmapNotify] = unmapnotify,
 375                                 [VisibilityNotify] = visibilitynotify,
 376 };
 377
 378 unsigned long
 379 name_to_color(char *colorname)
 380 {
 381         Colormap                cmap;
 382         Status                  status;
 383         XColor                  screen_def, exact_def;
 384         unsigned long           result = 0;
 385         char                    cname[32] = "#";
 386
 387         cmap = DefaultColormap(display, screens[0].idx);
 388         status = XAllocNamedColor(display, cmap, colorname,
 389             &screen_def, &exact_def);
 390         if (!status) {
 391                 strlcat(cname, colorname + 2, sizeof cname - 1);
 392                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 393                     &exact_def);
 394         }
 395         if (status)
 396                 result = screen_def.pixel;
 397         else
 398                 fprintf(stderr, "color '%s' not found.\n", colorname);
 399
 400         return (result);
 401 }
 402
 403 void
 404 setscreencolor(char *val, int i, int c)
 405 {
 406         if (i > 0 && i <= ScreenCount(display)) {
 407                 screens[i - 1].c[c].color = name_to_color(val);
 408                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 409                         errx(1, "strdup");
 410         } else if (i == -1) {
 411                 for (i = 0; i < ScreenCount(display); i++)
 412                         screens[i].c[c].color = name_to_color(val);
 413                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 414                                 errx(1, "strdup");
 415         } else
 416                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 417                     i, ScreenCount(display));
 418 }
 419
 420 void            new_region(struct swm_screen *, int, int, int, int);
 421
 422 void
 423 custom_region(char *val)
 424 {
 425         unsigned int                    sidx, x, y, w, h;
 426
 427         if (sscanf(val, "screen[%u]:%ux%u+%u+%u", &sidx, &w, &h, &x, &y) != 5)
 428                 errx(1, "invalid custom region, "
 429                     "should be 'screen[<n>]:<n>x<n>+<n>+<n>\n");
 430         if (sidx < 1 || sidx > ScreenCount(display))
 431                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 432                     sidx, ScreenCount(display));
 433         sidx--;
 434
 435         if (w < 1 || h < 1)
 436                 errx(1, "region %ux%u+%u+%u too small\n", w, h, x, y);
 437
 438         if (x  < 0 || x > DisplayWidth(display, sidx) ||
 439             y < 0 || y > DisplayHeight(display, sidx) ||
 440             w + x > DisplayWidth(display, sidx) ||
 441             h + y > DisplayHeight(display, sidx))
 442                 errx(1, "region %ux%u+%u+%u not within screen boundaries "
 443                     "(%ux%u)\n", w, h, x, y,
 444                     DisplayWidth(display, sidx), DisplayHeight(display, sidx));
 445
 446         new_region(&screens[sidx], x, y, w, h);
 447 }
 448
 449 int
 450 varmatch(char *var, char *name, int *index)
 451 {
 452         char                    *p, buf[5];
 453         int                     i;
 454
 455         i = strncmp(var, name, 255);
 456         if (index == NULL)
 457                 return (i);
 458
 459         *index = -1;
 460         if (i <= 0)
 461                 return (i);
 462         p = var + strlen(name);
 463         if (*p++ != '[')
 464                 return (i);
 465         bzero(buf, sizeof buf);
 466         i = 0;
 467         while (isdigit(*p) && i < sizeof buf)
 468                 buf[i++] = *p++;
 469         if (i == 0 || i >= sizeof buf || *p != ']')
 470                 return (1);
 471         *index = strtonum(buf, 0, 99, NULL);
 472         return (0);
 473 }
 474
 475 /* conf file stuff */
 476 #define SWM_CONF_WS     "\n= \t"
 477 #define SWM_CONF_FILE   "scrotwm.conf"
 478 int
 479 conf_load(char *filename)
 480 {
 481         FILE                    *config;
 482         char                    *line, *cp, *var, *val;
 483         size_t                  len, lineno = 0;
 484         int                     i, sc;
 485
 486         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 487
 488         if (filename == NULL)
 489                 return (1);
 490
 491         if ((config = fopen(filename, "r")) == NULL)
 492                 return (1);
 493
 494         for (sc = ScreenCount(display);;) {
 495                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 496                         if (feof(config))
 497                                 break;
 498                 cp = line;
 499                 cp += (long)strspn(cp, SWM_CONF_WS);
 500                 if (cp[0] == '\0') {
 501                         /* empty line */
 502                         free(line);
 503                         continue;
 504                 }
 505                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 506                         break;
 507                 cp += (long)strspn(cp, SWM_CONF_WS);
 508                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 509                         break;
 510
 511                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 512                 switch (var[0]) {
 513                 case 'b':
 514                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 515                                 bar_enabled = atoi(val);
 516                         else if (!varmatch(var, "bar_border", &i))
 517                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 518                         else if (!varmatch(var, "bar_color", &i))
 519                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 520                         else if (!varmatch(var, "bar_font_color", &i))
 521                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 522                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 523                                 asprintf(&bar_fonts[0], "%s", val);
 524                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 525                                 asprintf(&bar_argv[0], "%s", val);
 526                         else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 527                                 bar_delay = atoi(val);
 528                         else
 529                                 goto bad;
 530                         break;
 531
 532                 case 'c':
 533                         if (!varmatch(var, "color_focus", &i))
 534                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 535                         else if (!varmatch(var, "color_unfocus", &i))
 536                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 537                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 538                                 cycle_visible = atoi(val);
 539                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 540                                 cycle_visible = atoi(val);
 541                         else
 542                                 goto bad;
 543                         break;
 544
 545                 case 'd':
 546                         if (!strncmp(var, "dialog_ratio",
 547                             strlen("dialog_ratio"))) {
 548                                 dialog_ratio = atof(val);
 549                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 550                                         dialog_ratio = .6;
 551                         } else
 552                                 goto bad;
 553                         break;
 554
 555                 case 'r':
 556                         if (!strncmp(var, "region", strlen("region")))
 557                                 custom_region(val);
 558                         else
 559                                 goto bad;
 560                         break;
 561
 562                 case 's':
 563                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 564                                 asprintf(&spawn_term[0], "%s", val);
 565                         if (!strncmp(var, "screenshot_enabled",
 566                             strlen("screenshot_enabled")))
 567                                 ss_enabled = atoi(val);
 568                         if (!strncmp(var, "screenshot_app",
 569                             strlen("screenshot_app")))
 570                                 asprintf(&spawn_screenshot[0], "%s", val);
 571                         break;
 572                 default:
 573                         goto bad;
 574                 }
 575                 free(line);
 576         }
 577
 578         fclose(config);
 579         return (0);
 580
 581 bad:
 582         errx(1, "invalid conf file entry: %s=%s", var, val);
 583 }
 584
 585 void
 586 socket_setnonblock(int fd)
 587 {
 588         int                     flags;
 589
 590         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 591                 err(1, "fcntl F_GETFL");
 592         flags |= O_NONBLOCK;
 593         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 594                 err(1, "fcntl F_SETFL");
 595 }
 596
 597 void
 598 bar_print(struct swm_region *r, char *s)
 599 {
 600         XClearWindow(display, r->bar_window);
 601         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 602         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 603             strlen(s));
 604 }
 605
 606 void
 607 bar_extra_stop(void)
 608 {
 609         if (bar_pipe[0]) {
 610                 close(bar_pipe[0]);
 611                 bzero(bar_pipe, sizeof bar_pipe);
 612         }
 613         if (bar_pid) {
 614                 kill(bar_pid, SIGTERM);
 615                 bar_pid = 0;
 616         }
 617         strlcpy(bar_ext, "", sizeof bar_ext);
 618         bar_extra = 0;
 619 }
 620
 621 void
 622 bar_update(void)
 623 {
 624         time_t                  tmt;
 625         struct tm               tm;
 626         struct swm_region       *r;
 627         int                     i, x;
 628         size_t                  len;
 629         char                    s[SWM_BAR_MAX];
 630         char                    loc[SWM_BAR_MAX];
 631         char                    *b;
 632
 633         if (bar_enabled == 0)
 634                 return;
 635
 636         if (bar_extra && bar_extra_running) {
 637                 /* ignore short reads; it'll correct itself */
 638                 while ((b = fgetln(stdin, &len)) != NULL)
 639                         if (b && b[len - 1] == '\n') {
 640                                 b[len - 1] = '\0';
 641                                 strlcpy(bar_ext, b, sizeof bar_ext);
 642                         }
 643                 if (b == NULL && errno != EAGAIN) {
 644                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 645                             errno, strerror(errno));
 646                         bar_extra_stop();
 647                 }
 648         } else
 649                 strlcpy(bar_ext, "", sizeof bar_ext);
 650
 651         time(&tmt);
 652         localtime_r(&tmt, &tm);
 653         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 654         for (i = 0; i < ScreenCount(display); i++) {
 655                 x = 1;
 656                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 657                         snprintf(loc, sizeof loc, "%s     %d:%d    %s    %s",
 658                             s, x++, r->ws->idx + 1, bar_ext, bar_vertext);
 659                         bar_print(r, loc);
 660                 }
 661         }
 662         XSync(display, False);
 663         alarm(bar_delay);
 664 }
 665
 666 void
 667 bar_signal(int sig)
 668 {
 669         bar_alarm = 1;
 670 }
 671
 672 void
 673 bar_toggle(struct swm_region *r, union arg *args)
 674 {
 675         struct swm_region       *tmpr;
 676         int                     i, j, sc = ScreenCount(display);
 677
 678         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 679
 680         if (bar_enabled) {
 681                 for (i = 0; i < sc; i++)
 682                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 683                                 XUnmapWindow(display, tmpr->bar_window);
 684         } else {
 685                 for (i = 0; i < sc; i++)
 686                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 687                                 XMapRaised(display, tmpr->bar_window);
 688         }
 689         bar_enabled = !bar_enabled;
 690         XSync(display, False);
 691         for (i = 0; i < sc; i++)
 692                 for (j = 0; j < SWM_WS_MAX; j++)
 693                         screens[i].ws[j].restack = 1;
 694
 695         stack();
 696         /* must be after stack */
 697         for (i = 0; i < sc; i++)
 698                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 699                         bar_update();
 700 }
 701
 702 void
 703 bar_refresh(void)
 704 {
 705         XSetWindowAttributes    wa;
 706         struct swm_region       *r;
 707         int                     i;
 708
 709         /* do this here because the conf file is in memory */
 710         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 711                 /* launch external status app */
 712                 bar_extra_running = 1;
 713                 if (pipe(bar_pipe) == -1)
 714                         err(1, "pipe error");
 715                 socket_setnonblock(bar_pipe[0]);
 716                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 717                 if (dup2(bar_pipe[0], 0) == -1)
 718                         errx(1, "dup2");
 719                 if (dup2(bar_pipe[1], 1) == -1)
 720                         errx(1, "dup2");
 721                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 722                         err(1, "could not disable SIGPIPE");
 723                 switch (bar_pid = fork()) {
 724                 case -1:
 725                         err(1, "cannot fork");
 726                         break;
 727                 case 0: /* child */
 728                         close(bar_pipe[0]);
 729                         execvp(bar_argv[0], bar_argv);
 730                         err(1, "%s external app failed", bar_argv[0]);
 731                         break;
 732                 default: /* parent */
 733                         close(bar_pipe[1]);
 734                         break;
 735                 }
 736         }
 737
 738         bzero(&wa, sizeof wa);
 739         for (i = 0; i < ScreenCount(display); i++)
 740                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 741                         wa.border_pixel =
 742                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 743                         wa.background_pixel =
 744                             screens[i].c[SWM_S_COLOR_BAR].color;
 745                         XChangeWindowAttributes(display, r->bar_window,
 746                             CWBackPixel | CWBorderPixel, &wa);
 747                 }
 748         bar_update();
 749 }
 750
 751 void
 752 bar_setup(struct swm_region *r)
 753 {
 754         int                     i;
 755
 756         for (i = 0; bar_fonts[i] != NULL; i++) {
 757                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 758                 if (bar_fs) {
 759                         bar_fidx = i;
 760                         break;
 761                 }
 762         }
 763         if (bar_fonts[i] == NULL)
 764                         errx(1, "couldn't load font");
 765         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 766
 767         r->bar_window = XCreateSimpleWindow(display,
 768             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 769             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 770             r->s->c[SWM_S_COLOR_BAR].color);
 771         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 772         XSetFont(display, bar_gc, bar_fs->fid);
 773         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 774         if (bar_enabled)
 775                 XMapRaised(display, r->bar_window);
 776         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 777
 778         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 779                 err(1, "could not install bar_signal");
 780         bar_refresh();
 781 }
 782
 783 void
 784 version(struct swm_region *r, union arg *args)
 785 {
 786         bar_version = !bar_version;
 787         if (bar_version)
 788                 strlcpy(bar_vertext, cvstag, sizeof bar_vertext);
 789         else
 790                 strlcpy(bar_vertext, "", sizeof bar_vertext);
 791         bar_update();
 792 }
 793
 794 void
 795 config_win(struct ws_win *win)
 796 {
 797         XConfigureEvent         ce;
 798
 799         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 800             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 801         ce.type = ConfigureNotify;
 802         ce.display = display;
 803         ce.event = win->id;
 804         ce.window = win->id;
 805         ce.x = win->g.x;
 806         ce.y = win->g.y;
 807         ce.width = win->g.w;
 808         ce.height = win->g.h;
 809         ce.border_width = 1; /* XXX store this! */
 810         ce.above = None;
 811         ce.override_redirect = False;
 812         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 813 }
 814
 815 int
 816 count_win(struct workspace *ws, int count_transient)
 817 {
 818         struct ws_win           *win;
 819         int                     count = 0;
 820
 821         TAILQ_FOREACH(win, &ws->winlist, entry) {
 822                 if (count_transient == 0 && win->floating)
 823                         continue;
 824                 if (count_transient == 0 && win->transient)
 825                         continue;
 826                 count++;
 827         }
 828         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 829
 830         return (count);
 831 }
 832
 833 void
 834 quit(struct swm_region *r, union arg *args)
 835 {
 836         DNPRINTF(SWM_D_MISC, "quit\n");
 837         running = 0;
 838 }
 839
 840 void
 841 unmap_all(void)
 842 {
 843         struct ws_win           *win;
 844         int                     i, j;
 845
 846         for (i = 0; i < ScreenCount(display); i++)
 847                 for (j = 0; j < SWM_WS_MAX; j++)
 848                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 849                                 XUnmapWindow(display, win->id);
 850 }
 851
 852 void
 853 restart(struct swm_region *r, union arg *args)
 854 {
 855         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 856
 857         /* disable alarm because the following code may not be interrupted */
 858         alarm(0);
 859         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 860                 errx(1, "can't disable alarm");
 861
 862         bar_extra_stop();
 863         bar_extra = 1;
 864         unmap_all();
 865         XCloseDisplay(display);
 866         execvp(start_argv[0], start_argv);
 867         fprintf(stderr, "execvp failed\n");
 868         perror(" failed");
 869         quit(NULL, NULL);
 870 }
 871
 872 struct swm_region *
 873 root_to_region(Window root)
 874 {
 875         struct swm_region       *r = NULL;
 876         Window                  rr, cr;
 877         int                     i, x, y, wx, wy;
 878         unsigned int            mask;
 879
 880         for (i = 0; i < ScreenCount(display); i++)
 881                 if (screens[i].root == root)
 882                         break;
 883
 884         if (XQueryPointer(display, screens[i].root,
 885             &rr, &cr, &x, &y, &wx, &wy, &mask) != False) {
 886                 /* choose a region based on pointer location */
 887                 TAILQ_FOREACH(r, &screens[i].rl, entry)
 888                         if (x >= X(r) && x <= X(r) + WIDTH(r) &&
 889                             y >= Y(r) && y <= Y(r) + HEIGHT(r))
 890                                 break;
 891         }
 892
 893         if (r == NULL)
 894                 r = TAILQ_FIRST(&screens[i].rl);
 895
 896         return (r);
 897 }
 898
 899 struct ws_win *
 900 find_window(Window id)
 901 {
 902         struct ws_win           *win;
 903         int                     i, j;
 904
 905         for (i = 0; i < ScreenCount(display); i++)
 906                 for (j = 0; j < SWM_WS_MAX; j++)
 907                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 908                                 if (id == win->id)
 909                                         return (win);
 910         return (NULL);
 911 }
 912
 913 void
 914 spawn(struct swm_region *r, union arg *args)
 915 {
 916         char                    *ret;
 917         int                     si;
 918
 919         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 920         /*
 921          * The double-fork construct avoids zombie processes and keeps the code
 922          * clean from stupid signal handlers.
 923          */
 924         if (fork() == 0) {
 925                 if (fork() == 0) {
 926                         if (display)
 927                                 close(ConnectionNumber(display));
 928                         setenv("LD_PRELOAD", SWM_LIB, 1);
 929                         if (asprintf(&ret, "%d", r->ws->idx)) {
 930                                 setenv("_SWM_WS", ret, 1);
 931                                 free(ret);
 932                         }
 933                         if (asprintf(&ret, "%d", getpid())) {
 934                                 setenv("_SWM_PID", ret, 1);
 935                                 free(ret);
 936                         }
 937                         setsid();
 938                         /* kill stdin, mplayer, ssh-add etc. need that */
 939                         si = open("/dev/null", O_RDONLY, 0);
 940                         if (si == -1)
 941                                 err(1, "open /dev/null");
 942                         if (dup2(si, 0) == -1)
 943                                 err(1, "dup2 /dev/null");
 944                         execvp(args->argv[0], args->argv);
 945                         fprintf(stderr, "execvp failed\n");
 946                         perror(" failed");
 947                 }
 948                 exit(0);
 949         }
 950         wait(0);
 951 }
 952
 953 void
 954 spawnmenu(struct swm_region *r, union arg *args)
 955 {
 956         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
 957
 958         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
 959         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
 960         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
 961         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
 962         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
 963
 964         spawn(r, args);
 965 }
 966
 967 void
 968 unfocus_all(void)
 969 {
 970         struct ws_win           *win;
 971         int                     i, j;
 972
 973         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
 974
 975         for (i = 0; i < ScreenCount(display); i++)
 976                 for (j = 0; j < SWM_WS_MAX; j++)
 977                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
 978                                 if (win->ws->r == NULL)
 979                                         continue;
 980                                 grabbuttons(win, 0);
 981                                 XSetWindowBorder(display, win->id,
 982                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
 983                                 win->got_focus = 0;
 984                                 win->ws->focus = NULL;
 985                                 cur_focus = NULL;
 986                         }
 987 }
 988
 989 void
 990 focus_win(struct ws_win *win)
 991 {
 992         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
 993
 994         if (win == NULL)
 995                 return;
 996
 997         if (win->ws->focus != win && win->ws->focus != NULL)
 998                 win->ws->focus_prev = win->ws->focus;
 999
1000         unfocus_all();
1001         win->ws->focus = win;
1002         if (win->ws->r != NULL) {
1003                 cur_focus = win;
1004                 if (!win->got_focus) {
1005                         XSetWindowBorder(display, win->id,
1006                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
1007                         grabbuttons(win, 1);
1008                 }
1009                 win->got_focus = 1;
1010                 XSetInputFocus(display, win->id,
1011                     RevertToPointerRoot, CurrentTime);
1012         }
1013 }
1014
1015 void
1016 switchws(struct swm_region *r, union arg *args)
1017 {
1018         int                     wsid = args->id;
1019         struct swm_region       *this_r, *other_r;
1020         struct ws_win           *win;
1021         struct workspace        *new_ws, *old_ws;
1022
1023         this_r = r;
1024         old_ws = this_r->ws;
1025         new_ws = &this_r->s->ws[wsid];
1026
1027         DNPRINTF(SWM_D_WS, "switchws screen[%d]:%dx%d+%d+%d: "
1028             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
1029             old_ws->idx, wsid);
1030
1031         if (new_ws == old_ws)
1032                 return;
1033
1034         other_r = new_ws->r;
1035         if (!other_r) {
1036                 /* if the other workspace is hidden, switch windows */
1037                 /* map new window first to prevent ugly blinking */
1038                 old_ws->r = NULL;
1039                 old_ws->restack = 1;
1040
1041                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
1042                         XMapRaised(display, win->id);
1043
1044                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
1045                         XUnmapWindow(display, win->id);
1046         } else {
1047                 other_r->ws = old_ws;
1048                 old_ws->r = other_r;
1049         }
1050         this_r->ws = new_ws;
1051         new_ws->r = this_r;
1052
1053         ignore_enter = 1;
1054         /* set focus */
1055         if (new_ws->focus)
1056                 focus_win(new_ws->focus);
1057         stack();
1058         bar_update();
1059 }
1060
1061 void
1062 cyclews(struct swm_region *r, union arg *args)
1063 {
1064         union                   arg a;
1065         struct swm_screen       *s = r->s;
1066
1067         DNPRINTF(SWM_D_WS, "cyclews id %d "
1068             "in screen[%d]:%dx%d+%d+%d ws %d\n", args->id,
1069             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1070
1071         a.id = r->ws->idx;
1072         do {
1073                 switch (args->id) {
1074                 case SWM_ARG_ID_CYCLEWS_UP:
1075                         if (a.id < SWM_WS_MAX - 1)
1076                                 a.id++;
1077                         else
1078                                 a.id = 0;
1079                         break;
1080                 case SWM_ARG_ID_CYCLEWS_DOWN:
1081                         if (a.id > 0)
1082                                 a.id--;
1083                         else
1084                                 a.id = SWM_WS_MAX - 1;
1085                         break;
1086                 default:
1087                         return;
1088                 };
1089
1090                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
1091                         continue;
1092                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
1093                         continue;
1094
1095                 switchws(r, &a);
1096         } while (a.id != r->ws->idx);
1097 }
1098
1099 void
1100 cyclescr(struct swm_region *r, union arg *args)
1101 {
1102         struct swm_region       *rr;
1103         int                     i;
1104
1105         i = r->s->idx;
1106         switch (args->id) {
1107         case SWM_ARG_ID_CYCLESC_UP:
1108                 rr = TAILQ_NEXT(r, entry);
1109                 if (rr == NULL)
1110                         rr = TAILQ_FIRST(&screens[i].rl);
1111                 break;
1112         case SWM_ARG_ID_CYCLESC_DOWN:
1113                 rr = TAILQ_PREV(r, swm_region_list, entry);
1114                 if (rr == NULL)
1115                         rr = TAILQ_LAST(&screens[i].rl, swm_region_list);
1116                 break;
1117         default:
1118                 return;
1119         };
1120         unfocus_all();
1121         XSetInputFocus(display, PointerRoot, RevertToPointerRoot, CurrentTime);
1122         XWarpPointer(display, None, rr->s[i].root, 0, 0, 0, 0, rr->g.x,
1123             rr->g.y + bar_enabled ? bar_height : 0);
1124 }
1125
1126 void
1127 swapwin(struct swm_region *r, union arg *args)
1128 {
1129         struct ws_win           *target, *source;
1130         struct ws_win_list      *wl;
1131
1132
1133         DNPRINTF(SWM_D_WS, "swapwin id %d "
1134             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
1135             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1136         if (cur_focus == NULL)
1137                 return;
1138
1139         source = cur_focus;
1140         wl = &source->ws->winlist;
1141
1142         switch (args->id) {
1143         case SWM_ARG_ID_SWAPPREV:
1144                 target = TAILQ_PREV(source, ws_win_list, entry);
1145                 TAILQ_REMOVE(wl, cur_focus, entry);
1146                 if (target == NULL)
1147                         TAILQ_INSERT_TAIL(wl, source, entry);
1148                 else
1149                         TAILQ_INSERT_BEFORE(target, source, entry);
1150                 break;
1151         case SWM_ARG_ID_SWAPNEXT:
1152                 target = TAILQ_NEXT(source, entry);
1153                 TAILQ_REMOVE(wl, source, entry);
1154                 if (target == NULL)
1155                         TAILQ_INSERT_HEAD(wl, source, entry);
1156                 else
1157                         TAILQ_INSERT_AFTER(wl, target, source, entry);
1158                 break;
1159         case SWM_ARG_ID_SWAPMAIN:
1160                 target = TAILQ_FIRST(wl);
1161                 if (target == source) {
1162                         if (source->ws->focus_prev != NULL &&
1163                             source->ws->focus_prev != target)
1164
1165                                 source = source->ws->focus_prev;
1166                         else
1167                                 return;
1168                 }
1169                 source->ws->focus_prev = target;
1170                 TAILQ_REMOVE(wl, target, entry);
1171                 TAILQ_INSERT_BEFORE(source, target, entry);
1172                 TAILQ_REMOVE(wl, source, entry);
1173                 TAILQ_INSERT_HEAD(wl, source, entry);
1174                 break;
1175         default:
1176                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
1177                 return;
1178         }
1179
1180         ignore_enter = 1;
1181         stack();
1182 }
1183
1184 void
1185 focus(struct swm_region *r, union arg *args)
1186 {
1187         struct ws_win           *winfocus, *winlostfocus;
1188         struct ws_win_list      *wl;
1189
1190         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
1191         if (cur_focus == NULL)
1192                 return;
1193
1194         wl = &cur_focus->ws->winlist;
1195
1196         winlostfocus = cur_focus;
1197
1198         switch (args->id) {
1199         case SWM_ARG_ID_FOCUSPREV:
1200                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1201                 if (winfocus == NULL)
1202                         winfocus = TAILQ_LAST(wl, ws_win_list);
1203                 break;
1204
1205         case SWM_ARG_ID_FOCUSNEXT:
1206                 winfocus = TAILQ_NEXT(cur_focus, entry);
1207                 if (winfocus == NULL)
1208                         winfocus = TAILQ_FIRST(wl);
1209                 break;
1210
1211         case SWM_ARG_ID_FOCUSMAIN:
1212                 winfocus = TAILQ_FIRST(wl);
1213                 break;
1214
1215         default:
1216                 return;
1217         }
1218
1219         if (winfocus == winlostfocus || winfocus == NULL)
1220                 return;
1221
1222         XMapRaised(display, winfocus->id);
1223         focus_win(winfocus);
1224         XSync(display, False);
1225 }
1226
1227 void
1228 cycle_layout(struct swm_region *r, union arg *args)
1229 {
1230         struct workspace        *ws = r->ws;
1231
1232         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1233
1234         ws->cur_layout++;
1235         if (ws->cur_layout->l_stack == NULL)
1236                 ws->cur_layout = &layouts[0];
1237         ignore_enter = 1;
1238         stack();
1239 }
1240
1241 void
1242 stack_config(struct swm_region *r, union arg *args)
1243 {
1244         struct workspace        *ws = r->ws;
1245
1246         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1247             args->id, ws->idx);
1248
1249         if (ws->cur_layout->l_config != NULL)
1250                 ws->cur_layout->l_config(ws, args->id);
1251
1252         if (args->id != SWM_ARG_ID_STACKINIT);
1253                 stack();
1254 }
1255
1256 void
1257 stack(void) {
1258         struct swm_geometry     g;
1259         struct swm_region       *r;
1260         int                     i, j;
1261
1262         DNPRINTF(SWM_D_STACK, "stack\n");
1263
1264         for (i = 0; i < ScreenCount(display); i++) {
1265                 j = 0;
1266                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1267                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1268                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1269
1270                         /* start with screen geometry, adjust for bar */
1271                         g = r->g;
1272                         g.w -= 2;
1273                         g.h -= 2;
1274                         if (bar_enabled) {
1275                                 g.y += bar_height;
1276                                 g.h -= bar_height;
1277                         }
1278
1279                         r->ws->restack = 0;
1280                         r->ws->cur_layout->l_stack(r->ws, &g);
1281                 }
1282         }
1283         XSync(display, False);
1284 }
1285
1286 void
1287 stack_floater(struct ws_win *win, struct swm_region *r)
1288 {
1289         unsigned int            mask;
1290         XWindowChanges          wc;
1291
1292         bzero(&wc, sizeof wc);
1293         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1294         wc.border_width = 1;
1295         if (win->transient && (win->quirks & SWM_Q_TRANSSZ)) {
1296                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1297                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1298         }
1299         wc.width = win->g.w;
1300         wc.height = win->g.h;
1301         if (win->manual) {
1302                 wc.x = win->g.x;
1303                 wc.y = win->g.y;
1304         } else {
1305                 wc.x = (WIDTH(r) - win->g.w) / 2;
1306                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1307         }
1308
1309         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1310             win->id, wc.x, wc.y, wc.width, wc.height);
1311
1312         XConfigureWindow(display, win->id, mask, &wc);
1313 }
1314
1315 #define SWAPXY(g)       do {                            \
1316         int tmp;                                        \
1317         tmp = (g)->y; (g)->y = (g)->x; (g)->x = tmp;    \
1318         tmp = (g)->h; (g)->h = (g)->w; (g)->w = tmp;    \
1319 } while (0)
1320 void
1321 stack_master(struct workspace *ws, struct swm_geometry *g, int rot, int flip)
1322 {
1323         XWindowChanges          wc;
1324         struct swm_geometry     win_g, r_g = *g;
1325         struct ws_win           *win, *winfocus;
1326         int                     i, j, s, w_inc, h_inc, w_base, h_base, stacks;
1327         int                     hrh, extra, h_slice, last_h = 0;
1328         int                     split, colno, winno, mwin, msize, mscale;
1329         int                     remain, missing, v_slice;;
1330         unsigned int            mask;
1331
1332         DNPRINTF(SWM_D_STACK, "stack_master: workspace: %d\n rot=%s flip=%s",
1333             ws->idx, rot ? "yes" : "no", flip ? "yes" : "no");
1334
1335         if ((winno = count_win(ws, 0)) == 0)
1336                 return;
1337
1338         if (ws->focus == NULL)
1339                 ws->focus = TAILQ_FIRST(&ws->winlist);
1340         winfocus = cur_focus ? cur_focus : ws->focus;
1341
1342         win = TAILQ_FIRST(&ws->winlist);
1343         if (rot) {
1344                 w_inc = win->sh.width_inc;
1345                 w_base = win->sh.base_width;
1346                 mwin = ws->l_state.horizontal_mwin;
1347                 mscale = ws->l_state.horizontal_msize;
1348                 stacks = ws->l_state.horizontal_stacks;
1349                 SWAPXY(&r_g);
1350         } else {
1351                 w_inc = win->sh.height_inc;
1352                 w_base = win->sh.base_height;
1353                 mwin = ws->l_state.vertical_mwin;
1354                 mscale = ws->l_state.vertical_msize;
1355                 stacks = ws->l_state.vertical_stacks;
1356         }
1357         win_g = r_g;
1358
1359         if (stacks > winno - mwin)
1360                 stacks = winno - mwin;
1361         if (stacks < 1)
1362                 stacks = 1;
1363
1364         h_slice = r_g.h / SWM_H_SLICE;
1365         if (mwin && winno > mwin) {
1366                 v_slice = r_g.w / SWM_V_SLICE;
1367
1368                 split = mwin;
1369                 colno = split;
1370                 win_g.w = v_slice * mscale;
1371
1372                 if (w_inc > 1 && w_inc < v_slice) {
1373                         /* adjust for window's requested size increment */
1374                         remain = (win_g.w - w_base) % w_inc;
1375                         missing = w_inc - remain;
1376
1377                         if (missing <= extra || j == 0) {
1378                                 extra -= missing;
1379                                 win_g.w += missing;
1380                         } else {
1381                                 win_g.w -= remain;
1382                                 extra += remain;
1383                         }
1384                 }
1385
1386                 msize = win_g.w;
1387                 if (flip)
1388                         win_g.x += r_g.w - msize;
1389         } else {
1390                 msize = -2;
1391                 colno = split = winno / stacks;
1392                 win_g.w = ((r_g.w - (stacks * 2) + 2) / stacks);
1393         }
1394         hrh = r_g.h / colno;
1395         extra = r_g.h - (colno * hrh);
1396         win_g.h = hrh - 2;
1397
1398         /*  stack all the tiled windows */
1399         i = j = 0, s = stacks;
1400         TAILQ_FOREACH(win, &ws->winlist, entry) {
1401                 if (win->transient != 0 || win->floating != 0)
1402                         continue;
1403
1404                 if (split && i == split) {
1405                         colno = (winno - mwin) / stacks;
1406                         if (s <= (winno - mwin) % stacks)
1407                                 colno++;
1408                         split = split + colno;
1409                         hrh = (r_g.h / colno);
1410                         extra = r_g.h - (colno * hrh);
1411                         if (flip)
1412                                 win_g.x = r_g.x;
1413                         else
1414                                 win_g.x += win_g.w + 2;
1415                         win_g.w = (r_g.w - msize - (stacks * 2)) / stacks;
1416                         if (s == 1)
1417                                 win_g.w += (r_g.w - msize - (stacks * 2)) %
1418                                     stacks;
1419                         s--;
1420                         j = 0;
1421                 }
1422                 win_g.h = hrh - 2;
1423                 if (rot) {
1424                         h_inc = win->sh.width_inc;
1425                         h_base = win->sh.base_width;
1426                 } else {
1427                         h_inc = win->sh.height_inc;
1428                         h_base = win->sh.base_height;
1429                 }
1430                 if (j == colno - 1) {
1431                         win_g.h = hrh + extra;
1432                 } else if (h_inc > 1 && h_inc < h_slice) {
1433                         /* adjust for window's requested size increment */
1434                         remain = (win_g.h - h_base) % h_inc;
1435                         missing = h_inc - remain;
1436
1437                         if (missing <= extra || j == 0) {
1438                                 extra -= missing;
1439                                 win_g.h += missing;
1440                         } else {
1441                                 win_g.h -= remain;
1442                                 extra += remain;
1443                         }
1444                 }
1445
1446                 if (j == 0)
1447                         win_g.y = r_g.y;
1448                 else
1449                         win_g.y += last_h + 2;
1450
1451                 bzero(&wc, sizeof wc);
1452                 wc.border_width = 1;
1453                 if (rot) {
1454                         win->g.x = wc.x = win_g.y;
1455                         win->g.y = wc.y = win_g.x;
1456                         win->g.w = wc.width = win_g.h;
1457                         win->g.h = wc.height = win_g.w;
1458                 } else {
1459                         win->g.x = wc.x = win_g.x;
1460                         win->g.y = wc.y = win_g.y;
1461                         win->g.w = wc.width = win_g.w;
1462                         win->g.h = wc.height = win_g.h;
1463                 }
1464                 mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1465                 XConfigureWindow(display, win->id, mask, &wc);
1466                 XMapRaised(display, win->id);
1467
1468                 last_h = win_g.h;
1469                 i++;
1470                 j++;
1471         }
1472
1473         /* now, stack all the floaters and transients */
1474         TAILQ_FOREACH(win, &ws->winlist, entry) {
1475                 if (win->transient == 0 && win->floating == 0)
1476                         continue;
1477
1478                 stack_floater(win, ws->r);
1479                 XMapRaised(display, win->id);
1480         }
1481
1482         if (winfocus)
1483                 focus_win(winfocus); /* has to be done outside of the loop */
1484 }
1485
1486 void
1487 vertical_config(struct workspace *ws, int id)
1488 {
1489         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1490
1491         switch (id) {
1492         case SWM_ARG_ID_STACKRESET:
1493         case SWM_ARG_ID_STACKINIT:
1494                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1495                 ws->l_state.vertical_mwin = 1;
1496                 ws->l_state.vertical_stacks = 1;
1497                 break;
1498         case SWM_ARG_ID_MASTERSHRINK:
1499                 if (ws->l_state.vertical_msize > 1)
1500                         ws->l_state.vertical_msize--;
1501                 break;
1502         case SWM_ARG_ID_MASTERGROW:
1503                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1504                         ws->l_state.vertical_msize++;
1505                 break;
1506         case SWM_ARG_ID_MASTERADD:
1507                 ws->l_state.vertical_mwin++;
1508                 break;
1509         case SWM_ARG_ID_MASTERDEL:
1510                 if (ws->l_state.vertical_mwin > 0)
1511                         ws->l_state.vertical_mwin--;
1512                 break;
1513         case SWM_ARG_ID_STACKINC:
1514                 ws->l_state.vertical_stacks++;
1515                 break;
1516         case SWM_ARG_ID_STACKDEC:
1517                 if (ws->l_state.vertical_stacks > 1)
1518                         ws->l_state.vertical_stacks--;
1519                 break;
1520         default:
1521                 return;
1522         }
1523 }
1524
1525 void
1526 vertical_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, 0, 0);
1531 }
1532
1533 void
1534 horizontal_config(struct workspace *ws, int id)
1535 {
1536         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1537
1538         switch (id) {
1539         case SWM_ARG_ID_STACKRESET:
1540         case SWM_ARG_ID_STACKINIT:
1541                 ws->l_state.horizontal_mwin = 1;
1542                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1543                 ws->l_state.horizontal_stacks = 1;
1544                 break;
1545         case SWM_ARG_ID_MASTERSHRINK:
1546                 if (ws->l_state.horizontal_msize > 1)
1547                         ws->l_state.horizontal_msize--;
1548                 break;
1549         case SWM_ARG_ID_MASTERGROW:
1550                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1551                         ws->l_state.horizontal_msize++;
1552                 break;
1553         case SWM_ARG_ID_MASTERADD:
1554                 ws->l_state.horizontal_mwin++;
1555                 break;
1556         case SWM_ARG_ID_MASTERDEL:
1557                 if (ws->l_state.horizontal_mwin > 0)
1558                         ws->l_state.horizontal_mwin--;
1559                 break;
1560         case SWM_ARG_ID_STACKINC:
1561                 ws->l_state.horizontal_stacks++;
1562                 break;
1563         case SWM_ARG_ID_STACKDEC:
1564                 if (ws->l_state.horizontal_stacks > 1)
1565                         ws->l_state.horizontal_stacks--;
1566                 break;
1567         default:
1568                 return;
1569         }
1570 }
1571
1572 void
1573 horizontal_stack(struct workspace *ws, struct swm_geometry *g)
1574 {
1575         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1576
1577         stack_master(ws, g, 1, 0);
1578 }
1579
1580 /* fullscreen view */
1581 void
1582 max_stack(struct workspace *ws, struct swm_geometry *g) {
1583         XWindowChanges          wc;
1584         struct swm_geometry     gg = *g;
1585         struct ws_win           *win, *winfocus;
1586         unsigned int            mask;
1587
1588         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1589
1590         if (count_win(ws, 0) == 0)
1591                 return;
1592
1593         if (ws->focus == NULL)
1594                 ws->focus = TAILQ_FIRST(&ws->winlist);
1595         winfocus = cur_focus ? cur_focus : ws->focus;
1596
1597         TAILQ_FOREACH(win, &ws->winlist, entry) {
1598                 if (win->transient != 0 || win->floating != 0) {
1599                         if (win == ws->focus) {
1600                                 /* XXX maximize? */
1601                                 stack_floater(win, ws->r);
1602                                 XMapRaised(display, win->id);
1603                         } else
1604                                 XUnmapWindow(display, win->id);
1605                 } else {
1606                         bzero(&wc, sizeof wc);
1607                         wc.border_width = 1;
1608                         win->g.x = wc.x = gg.x;
1609                         win->g.y = wc.y = gg.y;
1610                         win->g.w = wc.width = gg.w;
1611                         win->g.h = wc.height = gg.h;
1612                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1613                         XConfigureWindow(display, win->id, mask, &wc);
1614
1615                         if (win == ws->focus) {
1616                                 XMapRaised(display, win->id);
1617                         } else
1618                                 XUnmapWindow(display, win->id);
1619                 }
1620         }
1621
1622         if (winfocus)
1623                 focus_win(winfocus); /* has to be done outside of the loop */
1624 }
1625
1626 void
1627 send_to_ws(struct swm_region *r, union arg *args)
1628 {
1629         int                     wsid = args->id;
1630         struct ws_win           *win = cur_focus;
1631         struct workspace        *ws, *nws;
1632         Atom                    ws_idx_atom = 0;
1633         unsigned char           ws_idx_str[SWM_PROPLEN];
1634
1635         if (win == NULL)
1636                 return;
1637
1638         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1639
1640         ws = win->ws;
1641         nws = &win->s->ws[wsid];
1642
1643         XUnmapWindow(display, win->id);
1644
1645         /* find a window to focus */
1646         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1647         if (ws->focus == NULL)
1648                 ws->focus = TAILQ_FIRST(&ws->winlist);
1649         if (ws->focus == win)
1650                 ws->focus = NULL;
1651
1652         TAILQ_REMOVE(&ws->winlist, win, entry);
1653
1654         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1655         win->ws = nws;
1656
1657         /* Try to update the window's workspace property */
1658         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1659         if (ws_idx_atom &&
1660             snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
1661                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1662                     ws_idx_str);
1663                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1664                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1665         }
1666
1667         if (count_win(nws, 1) == 1)
1668                 nws->focus = win;
1669         ws->restack = 1;
1670         nws->restack = 1;
1671
1672         stack();
1673 }
1674
1675 void
1676 wkill(struct swm_region *r, union arg *args)
1677 {
1678         DNPRINTF(SWM_D_MISC, "wkill\n");
1679         if(r->ws->focus != NULL)
1680                 XKillClient(display, r->ws->focus->id);
1681 }
1682
1683 void
1684 screenshot(struct swm_region *r, union arg *args)
1685 {
1686         union arg                       a;
1687
1688         DNPRINTF(SWM_D_MISC, "screenshot\n");
1689
1690         if (ss_enabled == 0)
1691                 return;
1692
1693         switch (args->id) {
1694         case SWM_ARG_ID_SS_ALL:
1695                 spawn_screenshot[1] = "full";
1696                 break;
1697         case SWM_ARG_ID_SS_WINDOW:
1698                 spawn_screenshot[1] = "window";
1699                 break;
1700         default:
1701                 return;
1702         }
1703         a.argv = spawn_screenshot;
1704         spawn(r, &a);
1705 }
1706
1707 void
1708 floating_toggle(struct swm_region *r, union arg *args)
1709 {
1710         struct ws_win   *win = cur_focus;
1711
1712         if (win == NULL)
1713                 return;
1714
1715         win->floating = !win->floating;
1716         win->manual = 0;
1717         stack();
1718         focus_win(win);
1719 }
1720
1721 /* key definitions */
1722 struct key {
1723         unsigned int            mod;
1724         KeySym                  keysym;
1725         void                    (*func)(struct swm_region *r, union arg *);
1726         union arg               args;
1727 } keys[] = {
1728         /* modifier             key     function                argument */
1729         { MODKEY,               XK_space,       cycle_layout,   {0} },
1730         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1731         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1732         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1733         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1734         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1735         { MODKEY | ShiftMask,   XK_comma,       stack_config,   {.id = SWM_ARG_ID_STACKINC} },
1736         { MODKEY | ShiftMask,   XK_period,      stack_config,   {.id = SWM_ARG_ID_STACKDEC} },
1737         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1738         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1739         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1740         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1741         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1742         { MODKEY | ShiftMask,   XK_Return,      spawn,          {.argv = spawn_term} },
1743         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1744         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1745         { MODKEY,               XK_q,           restart,        {0} },
1746         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1747         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1748         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1749         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1750         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1751         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1752         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1753         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1754         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1755         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1756         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1757         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1758         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1759         { MODKEY | ShiftMask,   XK_Right,       cyclescr,       {.id = SWM_ARG_ID_CYCLESC_UP} },
1760         { MODKEY | ShiftMask,   XK_Left,        cyclescr,       {.id = SWM_ARG_ID_CYCLESC_DOWN} },
1761         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1762         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1763         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1764         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1765         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1766         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1767         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1768         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1769         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1770         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1771         { MODKEY,               XK_b,           bar_toggle,     {0} },
1772         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1773         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1774         { MODKEY | ShiftMask,   XK_x,           wkill,          {0} },
1775         { MODKEY,               XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_ALL} },
1776         { MODKEY | ShiftMask,   XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_WINDOW} },
1777         { MODKEY,               XK_t,           floating_toggle,{0} },
1778         { MODKEY | ShiftMask,   XK_v,           version,        {0} },
1779         { MODKEY | ShiftMask,   XK_Delete,      spawn,          {.argv = spawn_lock} },
1780         { MODKEY | ShiftMask,   XK_i,           spawn,          {.argv = spawn_initscr} },
1781 };
1782
1783 void
1784 resize_window(struct ws_win *win, int center)
1785 {
1786         unsigned int            mask;
1787         XWindowChanges          wc;
1788         struct swm_region       *r;
1789
1790         r = root_to_region(win->wa.root);
1791         bzero(&wc, sizeof wc);
1792         mask = CWBorderWidth | CWWidth | CWHeight;
1793         wc.border_width = 1;
1794         wc.width = win->g.w;
1795         wc.height = win->g.h;
1796         if (center == SWM_ARG_ID_CENTER) {
1797                 wc.x = (WIDTH(r) - win->g.w) / 2;
1798                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1799                 mask |= CWX | CWY;
1800         }
1801
1802         DNPRINTF(SWM_D_STACK, "resize_window: win %lu x %d y %d w %d h %d\n",
1803             win->id, wc.x, wc.y, wc.width, wc.height);
1804
1805         XConfigureWindow(display, win->id, mask, &wc);
1806         config_win(win);
1807 }
1808
1809 void
1810 resize(struct ws_win *win, union arg *args)
1811 {
1812         XEvent                  ev;
1813         Time                    time = 0;
1814
1815         DNPRINTF(SWM_D_MOUSE, "resize: win %lu floating %d trans %d\n",
1816             win->id, win->floating, win->transient);
1817
1818         if (!(win->transient != 0 || win->floating != 0))
1819                 return;
1820
1821         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
1822             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
1823                 return;
1824         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w, win->g.h);
1825         do {
1826                 XMaskEvent(display, MOUSEMASK | ExposureMask |
1827                     SubstructureRedirectMask, &ev);
1828                 switch(ev.type) {
1829                 case ConfigureRequest:
1830                 case Expose:
1831                 case MapRequest:
1832                         handler[ev.type](&ev);
1833                         break;
1834                 case MotionNotify:
1835                         if (ev.xmotion.x < 0)
1836                                 ev.xmotion.x = 0;
1837                         if (ev.xmotion.y < 0)
1838                                 ev.xmotion.y = 0;
1839                         win->g.w = ev.xmotion.x;
1840                         win->g.h = ev.xmotion.y;
1841
1842                         /* not free, don't sync more than 60 times / second */
1843                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
1844                                 time = ev.xmotion.time;
1845                                 XSync(display, False);
1846                                 resize_window(win, args->id);
1847                         }
1848                         break;
1849                 }
1850         } while (ev.type != ButtonRelease);
1851         if (time) {
1852                 XSync(display, False);
1853                 resize_window(win, args->id);
1854         }
1855         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w - 1,
1856             win->g.h - 1);
1857         XUngrabPointer(display, CurrentTime);
1858
1859         /* drain events */
1860         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
1861 }
1862
1863 void
1864 move_window(struct ws_win *win)
1865 {
1866         unsigned int            mask;
1867         XWindowChanges          wc;
1868         struct swm_region       *r;
1869
1870         r = root_to_region(win->wa.root);
1871         bzero(&wc, sizeof wc);
1872         mask = CWX | CWY;
1873         wc.x = win->g.x;
1874         wc.y = win->g.y;
1875
1876         DNPRINTF(SWM_D_STACK, "move_window: win %lu x %d y %d w %d h %d\n",
1877             win->id, wc.x, wc.y, wc.width, wc.height);
1878
1879         XConfigureWindow(display, win->id, mask, &wc);
1880         config_win(win);
1881 }
1882
1883 void
1884 move(struct ws_win *win, union arg *args)
1885 {
1886         XEvent                  ev;
1887         Time                    time = 0;
1888         int                     restack = 0;
1889
1890         DNPRINTF(SWM_D_MOUSE, "move: win %lu floating %d trans %d\n",
1891             win->id, win->floating, win->transient);
1892
1893         if (win->floating == 0) {
1894                 win->floating = 1;
1895                 win->manual = 1;
1896                 restack = 1;
1897         }
1898
1899         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
1900             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
1901                 return;
1902         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
1903         do {
1904                 XMaskEvent(display, MOUSEMASK | ExposureMask |
1905                     SubstructureRedirectMask, &ev);
1906                 switch(ev.type) {
1907                 case ConfigureRequest:
1908                 case Expose:
1909                 case MapRequest:
1910                         handler[ev.type](&ev);
1911                         break;
1912                 case MotionNotify:
1913                         win->g.x = ev.xmotion.x_root;
1914                         win->g.y = ev.xmotion.y_root;
1915
1916                         /* not free, don't sync more than 60 times / second */
1917                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
1918                                 time = ev.xmotion.time;
1919                                 XSync(display, False);
1920                                 move_window(win);
1921                         }
1922                         break;
1923                 }
1924         } while (ev.type != ButtonRelease);
1925         if (time) {
1926                 XSync(display, False);
1927                 move_window(win);
1928         }
1929         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
1930         XUngrabPointer(display, CurrentTime);
1931         if (restack)
1932                 stack();
1933
1934         /* drain events */
1935         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
1936 }
1937
1938 /* mouse */
1939 enum { client_click, root_click };
1940 struct button {
1941         unsigned int            action;
1942         unsigned int            mask;
1943         unsigned int            button;
1944         void                    (*func)(struct ws_win *, union arg *);
1945         union arg               args;
1946 } buttons[] = {
1947           /* action             key             mouse button    func            args */
1948         { client_click,         MODKEY,         Button3,        resize,         {.id = SWM_ARG_ID_DONTCENTER} },
1949         { client_click,         MODKEY | ShiftMask, Button3,    resize,         {.id = SWM_ARG_ID_CENTER} },
1950         { client_click,         MODKEY,         Button1,        move,           {0} },
1951 };
1952
1953 void
1954 updatenumlockmask(void)
1955 {
1956         unsigned int            i, j;
1957         XModifierKeymap         *modmap;
1958
1959         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
1960         numlockmask = 0;
1961         modmap = XGetModifierMapping(display);
1962         for (i = 0; i < 8; i++)
1963                 for (j = 0; j < modmap->max_keypermod; j++)
1964                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
1965                           == XKeysymToKeycode(display, XK_Num_Lock))
1966                                 numlockmask = (1 << i);
1967
1968         XFreeModifiermap(modmap);
1969 }
1970
1971 void
1972 grabkeys(void)
1973 {
1974         unsigned int            i, j, k;
1975         KeyCode                 code;
1976         unsigned int            modifiers[] =
1977             { 0, LockMask, numlockmask, numlockmask | LockMask };
1978
1979         DNPRINTF(SWM_D_MISC, "grabkeys\n");
1980         updatenumlockmask();
1981
1982         for (k = 0; k < ScreenCount(display); k++) {
1983                 if (TAILQ_EMPTY(&screens[k].rl))
1984                         continue;
1985                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
1986                 for (i = 0; i < LENGTH(keys); i++) {
1987                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
1988                                 for (j = 0; j < LENGTH(modifiers); j++)
1989                                         XGrabKey(display, code,
1990                                             keys[i].mod | modifiers[j],
1991                                             screens[k].root, True,
1992                                             GrabModeAsync, GrabModeAsync);
1993                 }
1994         }
1995 }
1996
1997 void
1998 grabbuttons(struct ws_win *win, int focused)
1999 {
2000         unsigned int            i, j;
2001         unsigned int            modifiers[] =
2002             { 0, LockMask, numlockmask, numlockmask|LockMask };
2003
2004         updatenumlockmask();
2005         XUngrabButton(display, AnyButton, AnyModifier, win->id);
2006         if(focused) {
2007                 for (i = 0; i < LENGTH(buttons); i++)
2008                         if (buttons[i].action == client_click)
2009                                 for (j = 0; j < LENGTH(modifiers); j++)
2010                                         XGrabButton(display, buttons[i].button,
2011                                             buttons[i].mask | modifiers[j],
2012                                             win->id, False, BUTTONMASK,
2013                                             GrabModeAsync, GrabModeSync, None,
2014                                             None);
2015         } else
2016                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
2017                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
2018 }
2019
2020 void
2021 expose(XEvent *e)
2022 {
2023         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
2024 }
2025
2026 void
2027 keypress(XEvent *e)
2028 {
2029         unsigned int            i;
2030         KeySym                  keysym;
2031         XKeyEvent               *ev = &e->xkey;
2032
2033         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
2034
2035         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
2036         for (i = 0; i < LENGTH(keys); i++)
2037                 if (keysym == keys[i].keysym
2038                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
2039                    && keys[i].func)
2040                         keys[i].func(root_to_region(ev->root),
2041                             &(keys[i].args));
2042 }
2043
2044 void
2045 buttonpress(XEvent *e)
2046 {
2047         XButtonPressedEvent     *ev = &e->xbutton;
2048
2049         struct ws_win           *win;
2050         int                     i, action;
2051
2052         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
2053
2054         action = root_click;
2055         if ((win = find_window(ev->window)) == NULL)
2056                 return;
2057         else {
2058                 focus_win(win);
2059                 action = client_click;
2060         }
2061
2062         for (i = 0; i < LENGTH(buttons); i++)
2063                 if (action == buttons[i].action && buttons[i].func &&
2064                     buttons[i].button == ev->button &&
2065                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
2066                         buttons[i].func(win, &buttons[i].args);
2067 }
2068
2069 void
2070 set_win_state(struct ws_win *win, long state)
2071 {
2072         long                    data[] = {state, None};
2073
2074         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
2075
2076         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
2077             (unsigned char *)data, 2);
2078 }
2079
2080 struct ws_win *
2081 manage_window(Window id)
2082 {
2083         Window                  trans;
2084         struct workspace        *ws;
2085         struct ws_win           *win;
2086         int                     format, i, ws_idx;
2087         unsigned long           nitems, bytes;
2088         Atom                    ws_idx_atom = 0, type;
2089         unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
2090         struct swm_region       *r;
2091         long                    mask;
2092         const char              *errstr;
2093         XWindowChanges          wc;
2094
2095         if ((win = find_window(id)) != NULL)
2096                         return (win);   /* already being managed */
2097
2098         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
2099                 errx(1, "calloc: failed to allocate memory for new window");
2100
2101         /* Get all the window data in one shot */
2102         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2103         if (ws_idx_atom)
2104                 XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
2105                     False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
2106         XGetWindowAttributes(display, id, &win->wa);
2107         XGetTransientForHint(display, id, &trans);
2108         XGetWMNormalHints(display, id, &win->sh, &mask); /* XXX function? */
2109         if (trans) {
2110                 win->transient = trans;
2111                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
2112                     (unsigned)win->id, win->transient);
2113         }
2114
2115         /*
2116          * Figure out where to put the window. If it was previously assigned to
2117          * a workspace (either by spawn() or manually moving), and isn't
2118          * transient, * put it in the same workspace
2119          */
2120         r = root_to_region(win->wa.root);
2121         if (prop && win->transient == 0) {
2122                 DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
2123                 ws_idx = strtonum(prop, 0, 9, &errstr);
2124                 if (errstr) {
2125                         DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
2126                             errstr, prop);
2127                 }
2128                 ws = &r->s->ws[ws_idx];
2129         } else
2130                 ws = r->ws;
2131
2132         /* set up the window layout */
2133         win->id = id;
2134         win->ws = ws;
2135         win->s = r->s;  /* this never changes */
2136         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
2137
2138         win->g.w = win->wa.width;
2139         win->g.h = win->wa.height;
2140         win->g.x = win->wa.x;
2141         win->g.y = win->wa.y;
2142
2143         /* Set window properties so we can remember this after reincarnation */
2144         if (ws_idx_atom && prop == NULL &&
2145             snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
2146                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
2147                     ws_idx_str);
2148                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
2149                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
2150         }
2151         XFree(prop);
2152
2153         if (XGetClassHint(display, win->id, &win->ch)) {
2154                 DNPRINTF(SWM_D_CLASS, "class: %s name: %s\n",
2155                     win->ch.res_class, win->ch.res_name);
2156                 for (i = 0; quirks[i].class != NULL && quirks[i].name != NULL &&
2157                     quirks[i].quirk != 0; i++){
2158                         if (!strcmp(win->ch.res_class, quirks[i].class) &&
2159                             !strcmp(win->ch.res_name, quirks[i].name)) {
2160                                 DNPRINTF(SWM_D_CLASS, "found: %s name: %s\n",
2161                                     win->ch.res_class, win->ch.res_name);
2162                                 if (quirks[i].quirk & SWM_Q_FLOAT)
2163                                         win->floating = 1;
2164                                 win->quirks = quirks[i].quirk;
2165                         }
2166                 }
2167         }
2168
2169         /* alter window position if quirky */
2170         if (win->quirks & SWM_Q_ANYWHERE) {
2171                 win->manual = 1; /* don't center the quirky windows */
2172                 bzero(&wc, sizeof wc);
2173                 mask = 0;
2174                 if (win->g.y < bar_height) {
2175                         win->g.y = wc.y = bar_height;
2176                         mask |= CWY;
2177                 }
2178                 if (win->g.w + win->g.x > WIDTH(r)) {
2179                         win->g.x = wc.x = WIDTH(win->ws->r) - win->g.w - 2;
2180                         mask |= CWX;
2181                 }
2182                 wc.border_width = 1;
2183                 mask |= CWBorderWidth;
2184                 XConfigureWindow(display, win->id, mask, &wc);
2185         }
2186
2187         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
2188             PropertyChangeMask | StructureNotifyMask);
2189
2190         set_win_state(win, NormalState);
2191
2192         /* floaters need to be mapped if they are in the current workspace */
2193         if (win->floating && (ws->idx == r->ws->idx))
2194                 XMapRaised(display, win->id);
2195
2196         /* make new win focused */
2197         focus_win(win);
2198
2199         return (win);
2200 }
2201
2202 void
2203 unmanage_window(struct ws_win *win)
2204 {
2205         struct workspace        *ws;
2206
2207         if (win == NULL)
2208                 return;
2209
2210         DNPRINTF(SWM_D_MISC, "unmanage_window:  %lu\n", win->id);
2211
2212         /* don't unmanage if we are switching workspaces */
2213         ws = win->ws;
2214         if (ws->restack)
2215                 return;
2216
2217         /* find a window to focus */
2218         if (ws->focus == win)
2219                 ws->focus = TAILQ_PREV(win, ws_win_list, entry);
2220         if (ws->focus == NULL)
2221                 ws->focus = TAILQ_FIRST(&ws->winlist);
2222         if (ws->focus == NULL || ws->focus == win) {
2223                 ws->focus = NULL;
2224                 unfocus_all();
2225         } else
2226                 focus_win(ws->focus);
2227         if (ws->focus_prev == win)
2228                 ws->focus_prev = NULL;
2229
2230         TAILQ_REMOVE(&win->ws->winlist, win, entry);
2231         set_win_state(win, WithdrawnState);
2232         if (win->ch.res_class)
2233                 XFree(win->ch.res_class);
2234         if (win->ch.res_name)
2235                 XFree(win->ch.res_name);
2236         free(win);
2237 }
2238
2239 void
2240 configurerequest(XEvent *e)
2241 {
2242         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
2243         struct ws_win           *win;
2244         int                     new = 0;
2245         XWindowChanges          wc;
2246
2247         if ((win = find_window(ev->window)) == NULL)
2248                 new = 1;
2249
2250         if (new) {
2251                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
2252                     ev->window);
2253                 bzero(&wc, sizeof wc);
2254                 wc.x = ev->x;
2255                 wc.y = ev->y;
2256                 wc.width = ev->width;
2257                 wc.height = ev->height;
2258                 wc.border_width = ev->border_width;
2259                 wc.sibling = ev->above;
2260                 wc.stack_mode = ev->detail;
2261                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
2262         } else {
2263                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
2264                     ev->window);
2265                 if (win->floating) {
2266                         if (ev->value_mask & CWX)
2267                                 win->g.x = ev->x;
2268                         if (ev->value_mask & CWY)
2269                                 win->g.y = ev->y;
2270                         if (ev->value_mask & CWWidth)
2271                                 win->g.w = ev->width;
2272                         if (ev->value_mask & CWHeight)
2273                                 win->g.h = ev->height;
2274                         if (win->ws->r != NULL) {
2275                                 /* this seems to be full screen */
2276                                 if (win->g.w >= WIDTH(win->ws->r)) {
2277                                         win->g.x = -1;
2278                                         win->g.w = WIDTH(win->ws->r);
2279                                         ev->value_mask |= CWX | CWWidth;
2280                                 }
2281                                 if (win->g.h >= HEIGHT(win->ws->r)) {
2282                                         /* kill border */
2283                                         win->g.y = -1;
2284                                         win->g.h = HEIGHT(win->ws->r);
2285                                         ev->value_mask |= CWY | CWHeight;
2286                                 }
2287                         }
2288                         if ((ev->value_mask & (CWX | CWY)) &&
2289                             !(ev->value_mask & (CWWidth | CWHeight)))
2290                                 config_win(win);
2291                         XMoveResizeWindow(display, win->id,
2292                             win->g.x, win->g.y, win->g.w, win->g.h);
2293                 } else
2294                         config_win(win);
2295         }
2296 }
2297
2298 void
2299 configurenotify(XEvent *e)
2300 {
2301         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
2302             e->xconfigure.window);
2303 }
2304
2305 void
2306 destroynotify(XEvent *e)
2307 {
2308         struct ws_win           *win;
2309         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2310
2311         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
2312
2313         if ((win = find_window(ev->window)) != NULL) {
2314                 unmanage_window(win);
2315                 stack();
2316         }
2317 }
2318
2319 void
2320 enternotify(XEvent *e)
2321 {
2322         XCrossingEvent          *ev = &e->xcrossing;
2323         struct ws_win           *win;
2324
2325         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
2326
2327         if (ignore_enter) {
2328                 /* eat event(r) to prevent autofocus */
2329                 ignore_enter--;
2330                 return;
2331         }
2332
2333         if ((win = find_window(ev->window)) != NULL)
2334                 focus_win(win);
2335 }
2336
2337 void
2338 focusin(XEvent *e)
2339 {
2340         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
2341 }
2342
2343 void
2344 mappingnotify(XEvent *e)
2345 {
2346         XMappingEvent           *ev = &e->xmapping;
2347
2348         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
2349
2350         XRefreshKeyboardMapping(ev);
2351         if (ev->request == MappingKeyboard)
2352                 grabkeys();
2353 }
2354
2355 void
2356 maprequest(XEvent *e)
2357 {
2358         XMapRequestEvent        *ev = &e->xmaprequest;
2359         XWindowAttributes       wa;
2360
2361         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
2362             e->xmaprequest.window);
2363
2364         if (!XGetWindowAttributes(display, ev->window, &wa))
2365                 return;
2366         if (wa.override_redirect)
2367                 return;
2368         manage_window(e->xmaprequest.window);
2369
2370         stack();
2371 }
2372
2373 void
2374 propertynotify(XEvent *e)
2375 {
2376         struct ws_win           *win;
2377         XPropertyEvent          *ev = &e->xproperty;
2378
2379         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
2380             ev->window);
2381
2382         if (ev->state == PropertyDelete)
2383                 return; /* ignore */
2384         win = find_window(ev->window);
2385         if (win == NULL)
2386                 return;
2387
2388         switch (ev->atom) {
2389         case XA_WM_NORMAL_HINTS:
2390 #if 0
2391                 long            mask;
2392                 XGetWMNormalHints(display, win->id, &win->sh, &mask);
2393                 fprintf(stderr, "normal hints: flag 0x%x\n", win->sh.flags);
2394                 if (win->sh.flags & PMinSize) {
2395                         win->g.w = win->sh.min_width;
2396                         win->g.h = win->sh.min_height;
2397                         fprintf(stderr, "min %d %d\n", win->g.w, win->g.h);
2398                 }
2399                 XMoveResizeWindow(display, win->id,
2400                     win->g.x, win->g.y, win->g.w, win->g.h);
2401 #endif
2402                 break;
2403         default:
2404                 break;
2405         }
2406 }
2407
2408 void
2409 unmapnotify(XEvent *e)
2410 {
2411         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2412         struct ws_win           *win;
2413
2414         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
2415
2416         if ((win = find_window(ev->window)) != NULL)
2417                 if (win->transient)
2418                         unmanage_window(win);
2419 }
2420
2421 void
2422 visibilitynotify(XEvent *e)
2423 {
2424         int                     i;
2425         struct swm_region       *r;
2426
2427         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
2428             e->xvisibility.window);
2429         if (e->xvisibility.state == VisibilityUnobscured)
2430                 for (i = 0; i < ScreenCount(display); i++)
2431                         TAILQ_FOREACH(r, &screens[i].rl, entry)
2432                                 if (e->xvisibility.window == r->bar_window)
2433                                         bar_update();
2434 }
2435
2436 int
2437 xerror_start(Display *d, XErrorEvent *ee)
2438 {
2439         other_wm = 1;
2440         return (-1);
2441 }
2442
2443 int
2444 xerror(Display *d, XErrorEvent *ee)
2445 {
2446         /* fprintf(stderr, "error: %p %p\n", display, ee); */
2447         return (-1);
2448 }
2449
2450 int
2451 active_wm(void)
2452 {
2453         other_wm = 0;
2454         xerrorxlib = XSetErrorHandler(xerror_start);
2455
2456         /* this causes an error if some other window manager is running */
2457         XSelectInput(display, DefaultRootWindow(display),
2458             SubstructureRedirectMask);
2459         XSync(display, False);
2460         if (other_wm)
2461                 return (1);
2462
2463         XSetErrorHandler(xerror);
2464         XSync(display, False);
2465         return (0);
2466 }
2467
2468 long
2469 getstate(Window w)
2470 {
2471         int                     format, status;
2472         long                    result = -1;
2473         unsigned char           *p = NULL;
2474         unsigned long           n, extra;
2475         Atom                    real;
2476
2477         astate = XInternAtom(display, "WM_STATE", False);
2478         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
2479             &real, &format, &n, &extra, (unsigned char **)&p);
2480         if (status != Success)
2481                 return (-1);
2482         if (n != 0)
2483                 result = *p;
2484         XFree(p);
2485         return (result);
2486 }
2487
2488 void
2489 new_region(struct swm_screen *s, int x, int y, int w, int h)
2490 {
2491         struct swm_region       *r, *n;
2492         struct workspace        *ws = NULL;
2493         int                     i;
2494
2495         DNPRINTF(SWM_D_MISC, "new region: screen[%d]:%dx%d+%d+%d\n",
2496              s->idx, w, h, x, y);
2497
2498         /* remove any conflicting regions */
2499         n = TAILQ_FIRST(&s->rl);
2500         while (n) {
2501                 r = n;
2502                 n = TAILQ_NEXT(r, entry);
2503                 if (X(r) < (x + w) &&
2504                     (X(r) + WIDTH(r)) > x &&
2505                     Y(r) < (y + h) &&
2506                     (Y(r) + HEIGHT(r)) > y) {
2507                         XDestroyWindow(display, r->bar_window);
2508                         TAILQ_REMOVE(&s->rl, r, entry);
2509                         TAILQ_INSERT_TAIL(&s->orl, r, entry);
2510                 }
2511         }
2512
2513         /* search old regions for one to reuse */
2514
2515         /* size + location match */
2516         TAILQ_FOREACH(r, &s->orl, entry)
2517                 if (X(r) == x && Y(r) == y &&
2518                     HEIGHT(r) == h && WIDTH(r) == w)
2519                         break;
2520
2521         /* size match */
2522         TAILQ_FOREACH(r, &s->orl, entry)
2523                 if (HEIGHT(r) == h && WIDTH(r) == w)
2524                         break;
2525
2526         if (r != NULL) {
2527                 TAILQ_REMOVE(&s->orl, r, entry);
2528                 /* try to use old region's workspace */
2529                 if (r->ws->r == NULL)
2530                         ws = r->ws;
2531         } else
2532                 if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
2533                         errx(1, "calloc: failed to allocate memory for screen");
2534
2535         /* if we don't have a workspace already, find one */
2536         if (ws == NULL) {
2537                 for (i = 0; i < SWM_WS_MAX; i++)
2538                         if (s->ws[i].r == NULL) {
2539                                 ws = &s->ws[i];
2540                                 break;
2541                         }
2542         }
2543
2544         if (ws == NULL)
2545                 errx(1, "no free workspaces\n");
2546
2547         X(r) = x;
2548         Y(r) = y;
2549         WIDTH(r) = w;
2550         HEIGHT(r) = h;
2551         r->s = s;
2552         r->ws = ws;
2553         ws->r = r;
2554         TAILQ_INSERT_TAIL(&s->rl, r, entry);
2555         bar_setup(r);
2556 }
2557
2558 void
2559 scan_xrandr(int i)
2560 {
2561 #ifdef SWM_XRR_HAS_CRTC
2562         XRRCrtcInfo             *ci;
2563         XRRScreenResources      *sr;
2564         int                     c;
2565         int                     ncrtc = 0;
2566 #endif /* SWM_XRR_HAS_CRTC */
2567         struct swm_region       *r;
2568
2569
2570         if (i >= ScreenCount(display))
2571                 errx(1, "invalid screen");
2572
2573         /* remove any old regions */
2574         while ((r = TAILQ_FIRST(&screens[i].rl)) != NULL) {
2575                 r->ws->r = NULL;
2576                 XDestroyWindow(display, r->bar_window);
2577                 TAILQ_REMOVE(&screens[i].rl, r, entry);
2578                 TAILQ_INSERT_TAIL(&screens[i].orl, r, entry);
2579         }
2580
2581         /* map virtual screens onto physical screens */
2582 #ifdef SWM_XRR_HAS_CRTC
2583         if (xrandr_support) {
2584                 sr = XRRGetScreenResources(display, screens[i].root);
2585                 if (sr == NULL)
2586                         new_region(&screens[i], 0, 0,
2587                             DisplayWidth(display, i),
2588                             DisplayHeight(display, i));
2589                 else
2590                         ncrtc = sr->ncrtc;
2591
2592                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2593                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2594                         if (ci->noutput == 0)
2595                                 continue;
2596
2597                         if (ci != NULL && ci->mode == None)
2598                                 new_region(&screens[i], 0, 0,
2599                                     DisplayWidth(display, i),
2600                                     DisplayHeight(display, i));
2601                         else
2602                                 new_region(&screens[i],
2603                                     ci->x, ci->y, ci->width, ci->height);
2604                 }
2605                 if (ci)
2606                         XRRFreeCrtcInfo(ci);
2607                 XRRFreeScreenResources(sr);
2608         } else
2609 #endif /* SWM_XRR_HAS_CRTC */
2610         {
2611                 new_region(&screens[i], 0, 0, DisplayWidth(display, i),
2612                     DisplayHeight(display, i));
2613         }
2614 }
2615
2616 void
2617 screenchange(XEvent *e) {
2618         XRRScreenChangeNotifyEvent      *xe = (XRRScreenChangeNotifyEvent *)e;
2619         struct swm_region               *r;
2620         struct ws_win                   *win;
2621         int                             i;
2622
2623         DNPRINTF(SWM_D_EVENT, "screenchange: %lu\n", xe->root);
2624
2625         if (!XRRUpdateConfiguration(e))
2626                 return;
2627
2628         /* silly event doesn't include the screen index */
2629         for (i = 0; i < ScreenCount(display); i++)
2630                 if (screens[i].root == xe->root)
2631                         break;
2632         if (i >= ScreenCount(display))
2633                 errx(1, "screenchange: screen not found\n");
2634
2635         /* brute force for now, just re-enumerate the regions */
2636         scan_xrandr(i);
2637
2638         /* hide any windows that went away */
2639         TAILQ_FOREACH(r, &screens[i].rl, entry)
2640                 TAILQ_FOREACH(win, &r->ws->winlist, entry)
2641                         XUnmapWindow(display, win->id);
2642         stack();
2643 }
2644
2645 void
2646 setup_screens(void)
2647 {
2648         Window                  d1, d2, *wins = NULL;
2649         XWindowAttributes       wa;
2650         unsigned int            no;
2651         int                     i, j, k;
2652         int                     errorbase, major, minor;
2653         struct workspace        *ws;
2654         int                     ws_idx_atom;
2655
2656
2657         if ((screens = calloc(ScreenCount(display),
2658              sizeof(struct swm_screen))) == NULL)
2659                 errx(1, "calloc: screens");
2660
2661         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2662
2663         /* initial Xrandr setup */
2664         xrandr_support = XRRQueryExtension(display,
2665             &xrandr_eventbase, &errorbase);
2666         if (xrandr_support)
2667                 if (XRRQueryVersion(display, &major, &minor) && major < 1)
2668                         xrandr_support = 0;
2669
2670         /* map physical screens */
2671         for (i = 0; i < ScreenCount(display); i++) {
2672                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2673                 screens[i].idx = i;
2674                 TAILQ_INIT(&screens[i].rl);
2675                 TAILQ_INIT(&screens[i].orl);
2676                 screens[i].root = RootWindow(display, i);
2677
2678                 /* set default colors */
2679                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2680                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2681                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2682                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2683                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2684
2685                 /* init all workspaces */
2686                 /* XXX these should be dynamically allocated too */
2687                 for (j = 0; j < SWM_WS_MAX; j++) {
2688                         ws = &screens[i].ws[j];
2689                         ws->idx = j;
2690                         ws->restack = 1;
2691                         ws->focus = NULL;
2692                         ws->r = NULL;
2693                         TAILQ_INIT(&ws->winlist);
2694
2695                         for (k = 0; layouts[k].l_stack != NULL; k++)
2696                                 if (layouts[k].l_config != NULL)
2697                                         layouts[k].l_config(ws,
2698                                             SWM_ARG_ID_STACKINIT);
2699                         ws->cur_layout = &layouts[0];
2700                 }
2701                 /* grab existing windows (before we build the bars)*/
2702                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2703                         continue;
2704
2705                 scan_xrandr(i);
2706
2707                 if (xrandr_support)
2708                         XRRSelectInput(display, screens[i].root,
2709                             RRScreenChangeNotifyMask);
2710
2711                 /* attach windows to a region */
2712                 /* normal windows */
2713                 for (j = 0; j < no; j++) {
2714                         XGetWindowAttributes(display, wins[j], &wa);
2715                         if (!XGetWindowAttributes(display, wins[j], &wa) ||
2716                             wa.override_redirect ||
2717                             XGetTransientForHint(display, wins[j], &d1))
2718                                 continue;
2719
2720                         if (wa.map_state == IsViewable ||
2721                             getstate(wins[j]) == NormalState)
2722                                 manage_window(wins[j]);
2723                 }
2724                 /* transient windows */
2725                 for (j = 0; j < no; j++) {
2726                         if (!XGetWindowAttributes(display, wins[j], &wa))
2727                                 continue;
2728
2729                         if (XGetTransientForHint(display, wins[j], &d1) &&
2730                             (wa.map_state == IsViewable || getstate(wins[j]) ==
2731                             NormalState))
2732                                 manage_window(wins[j]);
2733                 }
2734                 if (wins) {
2735                         XFree(wins);
2736                         wins = NULL;
2737                 }
2738         }
2739 }
2740
2741 int
2742 main(int argc, char *argv[])
2743 {
2744         struct passwd           *pwd;
2745         char                    conf[PATH_MAX], *cfile = NULL;
2746         struct stat             sb;
2747         XEvent                  e;
2748         int                     xfd;
2749         fd_set                  rd;
2750
2751         start_argv = argv;
2752         fprintf(stderr, "Welcome to scrotwm V%s cvs tag: %s\n",
2753             SWM_VERSION, cvstag);
2754         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2755                 warnx("no locale support");
2756
2757         if (!(display = XOpenDisplay(0)))
2758                 errx(1, "can not open display");
2759
2760         if (active_wm())
2761                 errx(1, "other wm running");
2762
2763         astate = XInternAtom(display, "WM_STATE", False);
2764
2765         /* look for local and global conf file */
2766         pwd = getpwuid(getuid());
2767         if (pwd == NULL)
2768                 errx(1, "invalid user %d", getuid());
2769
2770         setup_screens();
2771
2772         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2773         if (stat(conf, &sb) != -1) {
2774                 if (S_ISREG(sb.st_mode))
2775                         cfile = conf;
2776         } else {
2777                 /* try global conf file */
2778                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2779                 if (!stat(conf, &sb))
2780                         if (S_ISREG(sb.st_mode))
2781                                 cfile = conf;
2782         }
2783         if (cfile)
2784                 conf_load(cfile);
2785         bar_refresh();
2786
2787         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2788
2789         grabkeys();
2790         stack();
2791
2792         xfd = ConnectionNumber(display);
2793         while (running) {
2794                 FD_ZERO(&rd);
2795                 FD_SET(xfd, &rd);
2796                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2797                         if (errno != EINTR)
2798                                 errx(1, "select failed");
2799                 if (bar_alarm) {
2800                         bar_alarm = 0;
2801                         bar_update();
2802                 }
2803                 while (XPending(display)) {
2804                         XNextEvent(display, &e);
2805                         if (e.type < LASTEvent) {
2806                                 if (handler[e.type])
2807                                         handler[e.type](&e);
2808                                 else
2809                                         DNPRINTF(SWM_D_EVENT,
2810                                             "win: %lu unknown event: %d\n",
2811                                             e.xany.window, e.type);
2812                         } else {
2813                                 switch (e.type - xrandr_eventbase) {
2814                                 case RRScreenChangeNotify:
2815                                         screenchange(&e);
2816                                         break;
2817                                 default:
2818                                         DNPRINTF(SWM_D_EVENT,
2819                                             "win: %lu unknown xrandr event: "
2820                                             "%d\n", e.xany.window, e.type);
2821                                         break;
2822                                 }
2823                         }
2824                 }
2825         }
2826
2827         XCloseDisplay(display);
2828
2829         return (0);
2830 }