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     "0.9"
  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 #define SWM_MAX_FONT_STEPS      (3)
 136
 137 #ifndef SWM_LIB
 138 #define SWM_LIB                 "/usr/X11R6/lib/swmhack.so"
 139 #endif
 140
 141 char                    **start_argv;
 142 Atom                    astate;
 143 Atom                    aprot;
 144 Atom                    adelete;
 145 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 146 int                     other_wm;
 147 int                     running = 1;
 148 int                     ss_enabled = 0;
 149 int                     xrandr_support;
 150 int                     xrandr_eventbase;
 151 int                     ignore_enter = 0;
 152 unsigned int            numlockmask = 0;
 153 Display                 *display;
 154
 155 int                     cycle_empty = 0;
 156 int                     cycle_visible = 0;
 157 int                     term_width = 0;
 158 int                     font_adjusted = 0;
 159
 160 /* dialog windows */
 161 double                  dialog_ratio = .6;
 162 /* status bar */
 163 #define SWM_BAR_MAX     (256)
 164 char                    *bar_argv[] = { NULL, NULL };
 165 int                     bar_pipe[2];
 166 char                    bar_ext[SWM_BAR_MAX];
 167 char                    bar_vertext[SWM_BAR_MAX];
 168 int                     bar_version = 0;
 169 sig_atomic_t            bar_alarm = 0;
 170 int                     bar_delay = 30;
 171 int                     bar_enabled = 1;
 172 int                     bar_extra = 1;
 173 int                     bar_extra_running = 0;
 174 int                     bar_verbose = 1;
 175 int                     bar_height = 0;
 176 pid_t                   bar_pid;
 177 GC                      bar_gc;
 178 XGCValues               bar_gcv;
 179 int                     bar_fidx = 0;
 180 XFontStruct             *bar_fs;
 181 char                    *bar_fonts[] = {
 182                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 183                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 184                             NULL
 185 };
 186
 187 /* terminal + args */
 188 char                    *spawn_term[] = { "xterm", NULL };
 189 char                    *spawn_screenshot[] = { "screenshot.sh", NULL, NULL };
 190 char                    *spawn_lock[] = { "xlock", NULL };
 191 char                    *spawn_initscr[] = { "initscreen.sh", NULL };
 192 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL, "-nb", NULL,
 193                             "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 194
 195 #define SWM_MENU_FN     (2)
 196 #define SWM_MENU_NB     (4)
 197 #define SWM_MENU_NF     (6)
 198 #define SWM_MENU_SB     (8)
 199 #define SWM_MENU_SF     (10)
 200
 201 /* layout manager data */
 202 struct swm_geometry {
 203         int                     x;
 204         int                     y;
 205         int                     w;
 206         int                     h;
 207 };
 208
 209 struct swm_screen;
 210 struct workspace;
 211
 212 /* virtual "screens" */
 213 struct swm_region {
 214         TAILQ_ENTRY(swm_region) entry;
 215         struct swm_geometry     g;
 216         struct workspace        *ws;    /* current workspace on this region */
 217         struct swm_screen       *s;     /* screen idx */
 218         Window                  bar_window;
 219 };
 220 TAILQ_HEAD(swm_region_list, swm_region);
 221
 222 struct ws_win {
 223         TAILQ_ENTRY(ws_win)     entry;
 224         Window                  id;
 225         struct swm_geometry     g;
 226         int                     got_focus;
 227         int                     floating;
 228         int                     transient;
 229         int                     manual;
 230         int                     font_size_boundary[SWM_MAX_FONT_STEPS];
 231         int                     font_steps;
 232         int                     last_inc;
 233         int                     can_delete;
 234         unsigned long           quirks;
 235         struct workspace        *ws;    /* always valid */
 236         struct swm_screen       *s;     /* always valid, never changes */
 237         XWindowAttributes       wa;
 238         XSizeHints              sh;
 239         XClassHint              ch;
 240 };
 241 TAILQ_HEAD(ws_win_list, ws_win);
 242
 243 /* layout handlers */
 244 void    stack(void);
 245 void    vertical_config(struct workspace *, int);
 246 void    vertical_stack(struct workspace *, struct swm_geometry *);
 247 void    horizontal_config(struct workspace *, int);
 248 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 249 void    max_stack(struct workspace *, struct swm_geometry *);
 250
 251 void    grabbuttons(struct ws_win *, int);
 252 void    new_region(struct swm_screen *, int, int, int, int);
 253
 254 struct layout {
 255         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 256         void            (*l_config)(struct workspace *, int);
 257 } layouts[] =  {
 258         /* stack,               configure */
 259         { vertical_stack,       vertical_config},
 260         { horizontal_stack,     horizontal_config},
 261         { max_stack,            NULL},
 262         { NULL,                 NULL},
 263 };
 264
 265 #define SWM_H_SLICE             (32)
 266 #define SWM_V_SLICE             (32)
 267
 268 /* define work spaces */
 269 struct workspace {
 270         int                     idx;            /* workspace index */
 271         int                     restack;        /* restack on switch */
 272         struct layout           *cur_layout;    /* current layout handlers */
 273         struct ws_win           *focus;         /* may be NULL */
 274         struct ws_win           *focus_prev;    /* may be NULL */
 275         struct swm_region       *r;             /* may be NULL */
 276         struct ws_win_list      winlist;        /* list of windows in ws */
 277
 278         /* stacker state */
 279         struct {
 280                                 int horizontal_msize;
 281                                 int horizontal_mwin;
 282                                 int horizontal_stacks;
 283                                 int vertical_msize;
 284                                 int vertical_mwin;
 285                                 int vertical_stacks;
 286         } l_state;
 287 };
 288
 289 enum    { SWM_S_COLOR_BAR, SWM_S_COLOR_BAR_BORDER, SWM_S_COLOR_BAR_FONT,
 290           SWM_S_COLOR_FOCUS, SWM_S_COLOR_UNFOCUS, SWM_S_COLOR_MAX };
 291
 292 /* physical screen mapping */
 293 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 294 struct swm_screen {
 295         int                     idx;            /* screen index */
 296         struct swm_region_list  rl;     /* list of regions on this screen */
 297         struct swm_region_list  orl;    /* list of old regions */
 298         Window                  root;
 299         struct workspace        ws[SWM_WS_MAX];
 300
 301         /* colors */
 302         struct {
 303                 unsigned long   color;
 304                 char            *name;
 305         } c[SWM_S_COLOR_MAX];
 306 };
 307 struct swm_screen       *screens;
 308 int                     num_screens;
 309
 310 struct ws_win           *cur_focus = NULL;
 311
 312 /* args to functions */
 313 union arg {
 314         int                     id;
 315 #define SWM_ARG_ID_FOCUSNEXT    (0)
 316 #define SWM_ARG_ID_FOCUSPREV    (1)
 317 #define SWM_ARG_ID_FOCUSMAIN    (2)
 318 #define SWM_ARG_ID_SWAPNEXT     (3)
 319 #define SWM_ARG_ID_SWAPPREV     (4)
 320 #define SWM_ARG_ID_SWAPMAIN     (5)
 321 #define SWM_ARG_ID_MASTERSHRINK (6)
 322 #define SWM_ARG_ID_MASTERGROW   (7)
 323 #define SWM_ARG_ID_MASTERADD    (8)
 324 #define SWM_ARG_ID_MASTERDEL    (9)
 325 #define SWM_ARG_ID_STACKRESET   (10)
 326 #define SWM_ARG_ID_STACKINIT    (11)
 327 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 328 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 329 #define SWM_ARG_ID_CYCLESC_UP   (14)
 330 #define SWM_ARG_ID_CYCLESC_DOWN (15)
 331 #define SWM_ARG_ID_STACKINC     (16)
 332 #define SWM_ARG_ID_STACKDEC     (17)
 333 #define SWM_ARG_ID_SS_ALL       (0)
 334 #define SWM_ARG_ID_SS_WINDOW    (1)
 335 #define SWM_ARG_ID_DONTCENTER   (0)
 336 #define SWM_ARG_ID_CENTER       (1)
 337 #define SWM_ARG_ID_KILLWINDOW   (0)
 338 #define SWM_ARG_ID_DELETEWINDOW (1)
 339         char                    **argv;
 340 };
 341
 342 /* quirks */
 343 struct quirk {
 344         char                    *class;
 345         char                    *name;
 346         unsigned long           quirk;
 347 #define SWM_Q_FLOAT             (1<<0)  /* float this window */
 348 #define SWM_Q_TRANSSZ           (1<<1)  /* transiend window size too small */
 349 #define SWM_Q_ANYWHERE          (1<<2)  /* don't position this window */
 350 #define SWM_Q_XTERM_FONTADJ     (1<<3)  /* adjust xterm fonts when resizing */
 351 #define SWM_Q_FULLSCREEN        (1<<4)  /* remove border */
 352 } quirks[] = {
 353         { "MPlayer",            "xv",           SWM_Q_FLOAT | SWM_Q_FULLSCREEN },
 354         { "OpenOffice.org 2.4", "VCLSalFrame",  SWM_Q_FLOAT },
 355         { "OpenOffice.org 3.0", "VCLSalFrame",  SWM_Q_FLOAT },
 356         { "Firefox-bin",        "firefox-bin",  SWM_Q_TRANSSZ },
 357         { "Gimp",               "gimp",         SWM_Q_FLOAT | SWM_Q_ANYWHERE },
 358         { "XTerm",              "xterm",        SWM_Q_XTERM_FONTADJ },
 359         { "xine",               "Xine Window",  SWM_Q_FLOAT | SWM_Q_ANYWHERE },
 360         { "Xitk",               "Xitk Combo",   SWM_Q_FLOAT | SWM_Q_ANYWHERE },
 361         { "xine",               "xine Panel",   SWM_Q_FLOAT | SWM_Q_ANYWHERE },
 362         { "Xitk",               "Xine Window",  SWM_Q_FLOAT | SWM_Q_ANYWHERE },
 363         { "xine",               "xine Video Fullscreen Window", SWM_Q_FULLSCREEN | SWM_Q_FLOAT },
 364         { "pcb",                "pcb",          SWM_Q_FLOAT },
 365         { NULL,                 NULL,           0},
 366 };
 367
 368 /* events */
 369 void                    expose(XEvent *);
 370 void                    keypress(XEvent *);
 371 void                    buttonpress(XEvent *);
 372 void                    configurerequest(XEvent *);
 373 void                    configurenotify(XEvent *);
 374 void                    destroynotify(XEvent *);
 375 void                    enternotify(XEvent *);
 376 void                    focusin(XEvent *);
 377 void                    mappingnotify(XEvent *);
 378 void                    maprequest(XEvent *);
 379 void                    propertynotify(XEvent *);
 380 void                    unmapnotify(XEvent *);
 381 void                    visibilitynotify(XEvent *);
 382
 383 void                    (*handler[LASTEvent])(XEvent *) = {
 384                                 [Expose] = expose,
 385                                 [KeyPress] = keypress,
 386                                 [ButtonPress] = buttonpress,
 387                                 [ConfigureRequest] = configurerequest,
 388                                 [ConfigureNotify] = configurenotify,
 389                                 [DestroyNotify] = destroynotify,
 390                                 [EnterNotify] = enternotify,
 391                                 [FocusIn] = focusin,
 392                                 [MappingNotify] = mappingnotify,
 393                                 [MapRequest] = maprequest,
 394                                 [PropertyNotify] = propertynotify,
 395                                 [UnmapNotify] = unmapnotify,
 396                                 [VisibilityNotify] = visibilitynotify,
 397 };
 398
 399 unsigned long
 400 name_to_color(char *colorname)
 401 {
 402         Colormap                cmap;
 403         Status                  status;
 404         XColor                  screen_def, exact_def;
 405         unsigned long           result = 0;
 406         char                    cname[32] = "#";
 407
 408         cmap = DefaultColormap(display, screens[0].idx);
 409         status = XAllocNamedColor(display, cmap, colorname,
 410             &screen_def, &exact_def);
 411         if (!status) {
 412                 strlcat(cname, colorname + 2, sizeof cname - 1);
 413                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 414                     &exact_def);
 415         }
 416         if (status)
 417                 result = screen_def.pixel;
 418         else
 419                 fprintf(stderr, "color '%s' not found.\n", colorname);
 420
 421         return (result);
 422 }
 423
 424 void
 425 setscreencolor(char *val, int i, int c)
 426 {
 427         if (i > 0 && i <= ScreenCount(display)) {
 428                 screens[i - 1].c[c].color = name_to_color(val);
 429                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 430                         errx(1, "strdup");
 431         } else if (i == -1) {
 432                 for (i = 0; i < ScreenCount(display); i++)
 433                         screens[i].c[c].color = name_to_color(val);
 434                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 435                                 errx(1, "strdup");
 436         } else
 437                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 438                     i, ScreenCount(display));
 439 }
 440
 441 void
 442 custom_region(char *val)
 443 {
 444         unsigned int                    sidx, x, y, w, h;
 445
 446         if (sscanf(val, "screen[%u]:%ux%u+%u+%u", &sidx, &w, &h, &x, &y) != 5)
 447                 errx(1, "invalid custom region, "
 448                     "should be 'screen[<n>]:<n>x<n>+<n>+<n>\n");
 449         if (sidx < 1 || sidx > ScreenCount(display))
 450                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 451                     sidx, ScreenCount(display));
 452         sidx--;
 453
 454         if (w < 1 || h < 1)
 455                 errx(1, "region %ux%u+%u+%u too small\n", w, h, x, y);
 456
 457         if (x  < 0 || x > DisplayWidth(display, sidx) ||
 458             y < 0 || y > DisplayHeight(display, sidx) ||
 459             w + x > DisplayWidth(display, sidx) ||
 460             h + y > DisplayHeight(display, sidx))
 461                 errx(1, "region %ux%u+%u+%u not within screen boundaries "
 462                     "(%ux%u)\n", w, h, x, y,
 463                     DisplayWidth(display, sidx), DisplayHeight(display, sidx));
 464
 465         new_region(&screens[sidx], x, y, w, h);
 466 }
 467
 468 int
 469 varmatch(char *var, char *name, int *index)
 470 {
 471         char                    *p, buf[5];
 472         int                     i;
 473
 474         i = strncmp(var, name, 255);
 475         if (index == NULL)
 476                 return (i);
 477
 478         *index = -1;
 479         if (i <= 0)
 480                 return (i);
 481         p = var + strlen(name);
 482         if (*p++ != '[')
 483                 return (i);
 484         bzero(buf, sizeof buf);
 485         i = 0;
 486         while (isdigit(*p) && i < sizeof buf)
 487                 buf[i++] = *p++;
 488         if (i == 0 || i >= sizeof buf || *p != ']')
 489                 return (1);
 490         *index = strtonum(buf, 0, 99, NULL);
 491         return (0);
 492 }
 493
 494 /* conf file stuff */
 495 #define SWM_CONF_WS     "\n= \t"
 496 #define SWM_CONF_FILE   "scrotwm.conf"
 497 int
 498 conf_load(char *filename)
 499 {
 500         FILE                    *config;
 501         char                    *line, *cp, *var, *val;
 502         size_t                  len, lineno = 0;
 503         int                     i, sc;
 504
 505         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 506
 507         if (filename == NULL)
 508                 return (1);
 509
 510         if ((config = fopen(filename, "r")) == NULL)
 511                 return (1);
 512
 513         for (sc = ScreenCount(display);;) {
 514                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 515                         if (feof(config))
 516                                 break;
 517                 cp = line;
 518                 cp += (long)strspn(cp, SWM_CONF_WS);
 519                 if (cp[0] == '\0') {
 520                         /* empty line */
 521                         free(line);
 522                         continue;
 523                 }
 524                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 525                         break;
 526                 cp += (long)strspn(cp, SWM_CONF_WS);
 527                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 528                         break;
 529
 530                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 531                 switch (var[0]) {
 532                 case 'b':
 533                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 534                                 bar_enabled = atoi(val);
 535                         else if (!varmatch(var, "bar_border", &i))
 536                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 537                         else if (!varmatch(var, "bar_color", &i))
 538                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 539                         else if (!varmatch(var, "bar_font_color", &i))
 540                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 541                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 542                                 asprintf(&bar_fonts[0], "%s", val);
 543                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 544                                 asprintf(&bar_argv[0], "%s", val);
 545                         else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 546                                 bar_delay = atoi(val);
 547                         else
 548                                 goto bad;
 549                         break;
 550
 551                 case 'c':
 552                         if (!varmatch(var, "color_focus", &i))
 553                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 554                         else if (!varmatch(var, "color_unfocus", &i))
 555                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 556                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 557                                 cycle_visible = atoi(val);
 558                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 559                                 cycle_visible = atoi(val);
 560                         else
 561                                 goto bad;
 562                         break;
 563
 564                 case 'd':
 565                         if (!strncmp(var, "dialog_ratio",
 566                             strlen("dialog_ratio"))) {
 567                                 dialog_ratio = atof(val);
 568                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 569                                         dialog_ratio = .6;
 570                         } else
 571                                 goto bad;
 572                         break;
 573
 574                 case 'r':
 575                         if (!strncmp(var, "region", strlen("region")))
 576                                 custom_region(val);
 577                         else
 578                                 goto bad;
 579                         break;
 580
 581                 case 's':
 582                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 583                                 asprintf(&spawn_term[0], "%s", val);
 584                         else if (!strncmp(var, "screenshot_enabled",
 585                             strlen("screenshot_enabled")))
 586                                 ss_enabled = atoi(val);
 587                         else if (!strncmp(var, "screenshot_app",
 588                             strlen("screenshot_app")))
 589                                 asprintf(&spawn_screenshot[0], "%s", val);
 590                         else
 591                                 goto bad;
 592                         break;
 593
 594                 case 't':
 595                         if (!strncmp(var, "term_width", strlen("term_width")))
 596                                 term_width = atoi(val);
 597                         else
 598                                 goto bad;
 599                         break;
 600
 601                 default:
 602                         goto bad;
 603                 }
 604                 free(line);
 605         }
 606
 607         fclose(config);
 608         return (0);
 609
 610 bad:
 611         errx(1, "invalid conf file entry: %s=%s", var, val);
 612 }
 613
 614 void
 615 socket_setnonblock(int fd)
 616 {
 617         int                     flags;
 618
 619         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 620                 err(1, "fcntl F_GETFL");
 621         flags |= O_NONBLOCK;
 622         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 623                 err(1, "fcntl F_SETFL");
 624 }
 625
 626 void
 627 bar_print(struct swm_region *r, char *s)
 628 {
 629         XClearWindow(display, r->bar_window);
 630         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 631         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 632             strlen(s));
 633 }
 634
 635 void
 636 bar_extra_stop(void)
 637 {
 638         if (bar_pipe[0]) {
 639                 close(bar_pipe[0]);
 640                 bzero(bar_pipe, sizeof bar_pipe);
 641         }
 642         if (bar_pid) {
 643                 kill(bar_pid, SIGTERM);
 644                 bar_pid = 0;
 645         }
 646         strlcpy(bar_ext, "", sizeof bar_ext);
 647         bar_extra = 0;
 648 }
 649
 650 void
 651 bar_update(void)
 652 {
 653         time_t                  tmt;
 654         struct tm               tm;
 655         struct swm_region       *r;
 656         int                     i, x;
 657         size_t                  len;
 658         char                    s[SWM_BAR_MAX];
 659         char                    loc[SWM_BAR_MAX];
 660         char                    *b;
 661
 662         if (bar_enabled == 0)
 663                 return;
 664         if (bar_extra && bar_extra_running) {
 665                 /* ignore short reads; it'll correct itself */
 666                 while ((b = fgetln(stdin, &len)) != NULL)
 667                         if (b && b[len - 1] == '\n') {
 668                                 b[len - 1] = '\0';
 669                                 strlcpy(bar_ext, b, sizeof bar_ext);
 670                         }
 671                 if (b == NULL && errno != EAGAIN) {
 672                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 673                             errno, strerror(errno));
 674                         bar_extra_stop();
 675                 }
 676         } else
 677                 strlcpy(bar_ext, "", sizeof bar_ext);
 678
 679         time(&tmt);
 680         localtime_r(&tmt, &tm);
 681         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 682         for (i = 0; i < ScreenCount(display); i++) {
 683                 x = 1;
 684                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 685                         snprintf(loc, sizeof loc, "%s     %d:%d    %s    %s",
 686                             s, x++, r->ws->idx + 1, bar_ext, bar_vertext);
 687                         bar_print(r, loc);
 688                 }
 689         }
 690         XSync(display, False);
 691         alarm(bar_delay);
 692 }
 693
 694 void
 695 bar_signal(int sig)
 696 {
 697         bar_alarm = 1;
 698 }
 699
 700 void
 701 bar_toggle(struct swm_region *r, union arg *args)
 702 {
 703         struct swm_region       *tmpr;
 704         int                     i, j, sc = ScreenCount(display);
 705
 706         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 707
 708         if (bar_enabled)
 709                 for (i = 0; i < sc; i++)
 710                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 711                                 XUnmapWindow(display, tmpr->bar_window);
 712         else
 713                 for (i = 0; i < sc; i++)
 714                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 715                                 XMapRaised(display, tmpr->bar_window);
 716
 717         bar_enabled = !bar_enabled;
 718         for (i = 0; i < sc; i++)
 719                 for (j = 0; j < SWM_WS_MAX; j++)
 720                         screens[i].ws[j].restack = 1;
 721
 722         stack();
 723         /* must be after stack */
 724         bar_update();
 725 }
 726
 727 void
 728 bar_refresh(void)
 729 {
 730         XSetWindowAttributes    wa;
 731         struct swm_region       *r;
 732         int                     i;
 733
 734         /* do this here because the conf file is in memory */
 735         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 736                 /* launch external status app */
 737                 bar_extra_running = 1;
 738                 if (pipe(bar_pipe) == -1)
 739                         err(1, "pipe error");
 740                 socket_setnonblock(bar_pipe[0]);
 741                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 742                 if (dup2(bar_pipe[0], 0) == -1)
 743                         errx(1, "dup2");
 744                 if (dup2(bar_pipe[1], 1) == -1)
 745                         errx(1, "dup2");
 746                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 747                         err(1, "could not disable SIGPIPE");
 748                 switch (bar_pid = fork()) {
 749                 case -1:
 750                         err(1, "cannot fork");
 751                         break;
 752                 case 0: /* child */
 753                         close(bar_pipe[0]);
 754                         execvp(bar_argv[0], bar_argv);
 755                         err(1, "%s external app failed", bar_argv[0]);
 756                         break;
 757                 default: /* parent */
 758                         close(bar_pipe[1]);
 759                         break;
 760                 }
 761         }
 762
 763         bzero(&wa, sizeof wa);
 764         for (i = 0; i < ScreenCount(display); i++)
 765                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 766                         wa.border_pixel =
 767                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 768                         wa.background_pixel =
 769                             screens[i].c[SWM_S_COLOR_BAR].color;
 770                         XChangeWindowAttributes(display, r->bar_window,
 771                             CWBackPixel | CWBorderPixel, &wa);
 772                 }
 773         bar_update();
 774 }
 775
 776 void
 777 bar_setup(struct swm_region *r)
 778 {
 779         int                     i;
 780
 781         for (i = 0; bar_fonts[i] != NULL; i++) {
 782                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 783                 if (bar_fs) {
 784                         bar_fidx = i;
 785                         break;
 786                 }
 787         }
 788         if (bar_fonts[i] == NULL)
 789                         errx(1, "couldn't load font");
 790         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 791
 792         r->bar_window = XCreateSimpleWindow(display,
 793             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 794             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 795             r->s->c[SWM_S_COLOR_BAR].color);
 796         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 797         XSetFont(display, bar_gc, bar_fs->fid);
 798         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 799         if (bar_enabled)
 800                 XMapRaised(display, r->bar_window);
 801         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 802
 803         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 804                 err(1, "could not install bar_signal");
 805         bar_refresh();
 806 }
 807
 808 void
 809 version(struct swm_region *r, union arg *args)
 810 {
 811         bar_version = !bar_version;
 812         if (bar_version)
 813                 strlcpy(bar_vertext, cvstag, sizeof bar_vertext);
 814         else
 815                 strlcpy(bar_vertext, "", sizeof bar_vertext);
 816         bar_update();
 817 }
 818
 819 void
 820 client_msg(struct ws_win *win, Atom a)
 821 {
 822         XClientMessageEvent     cm;
 823
 824         bzero(&cm, sizeof cm);
 825         cm.type = ClientMessage;
 826         cm.window = win->id;
 827         cm.message_type = aprot;
 828         cm.format = 32;
 829         cm.data.l[0] = a;
 830         cm.data.l[1] = CurrentTime;
 831         XSendEvent(display, win->id, False, 0L, (XEvent *)&cm);
 832 }
 833
 834 void
 835 config_win(struct ws_win *win)
 836 {
 837         XConfigureEvent         ce;
 838
 839         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 840             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 841         ce.type = ConfigureNotify;
 842         ce.display = display;
 843         ce.event = win->id;
 844         ce.window = win->id;
 845         ce.x = win->g.x;
 846         ce.y = win->g.y;
 847         ce.width = win->g.w;
 848         ce.height = win->g.h;
 849         ce.border_width = 1; /* XXX store this! */
 850         ce.above = None;
 851         ce.override_redirect = False;
 852         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 853 }
 854
 855 int
 856 count_win(struct workspace *ws, int count_transient)
 857 {
 858         struct ws_win           *win;
 859         int                     count = 0;
 860
 861         TAILQ_FOREACH(win, &ws->winlist, entry) {
 862                 if (count_transient == 0 && win->floating)
 863                         continue;
 864                 if (count_transient == 0 && win->transient)
 865                         continue;
 866                 count++;
 867         }
 868         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 869
 870         return (count);
 871 }
 872
 873 void
 874 quit(struct swm_region *r, union arg *args)
 875 {
 876         DNPRINTF(SWM_D_MISC, "quit\n");
 877         running = 0;
 878 }
 879
 880 void
 881 unmap_all(void)
 882 {
 883         struct ws_win           *win;
 884         int                     i, j;
 885
 886         for (i = 0; i < ScreenCount(display); i++)
 887                 for (j = 0; j < SWM_WS_MAX; j++)
 888                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 889                                 XUnmapWindow(display, win->id);
 890 }
 891
 892 void
 893 fake_keypress(struct ws_win *win, int keysym, int modifiers)
 894 {
 895         XKeyEvent event;
 896
 897         event.display = display;        /* Ignored, but what the hell */
 898         event.window = win->id;
 899         event.root = win->s->root;
 900         event.subwindow = None;
 901         event.time = CurrentTime;
 902         event.x = win->g.x;
 903         event.y = win->g.y;
 904         event.x_root = 1;
 905         event.y_root = 1;
 906         event.same_screen = True;
 907         event.keycode = XKeysymToKeycode(display, keysym);
 908         event.state = modifiers;
 909
 910         event.type = KeyPress;
 911         XSendEvent(event.display, event.window, True,
 912             KeyPressMask, (XEvent *)&event);
 913
 914         event.type = KeyRelease;
 915         XSendEvent(event.display, event.window, True,
 916             KeyPressMask, (XEvent *)&event);
 917
 918 }
 919
 920 void
 921 restart(struct swm_region *r, union arg *args)
 922 {
 923         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 924
 925         /* disable alarm because the following code may not be interrupted */
 926         alarm(0);
 927         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 928                 errx(1, "can't disable alarm");
 929
 930         bar_extra_stop();
 931         bar_extra = 1;
 932         unmap_all();
 933         XCloseDisplay(display);
 934         execvp(start_argv[0], start_argv);
 935         fprintf(stderr, "execvp failed\n");
 936         perror(" failed");
 937         quit(NULL, NULL);
 938 }
 939
 940 struct swm_region *
 941 root_to_region(Window root)
 942 {
 943         struct swm_region       *r = NULL;
 944         Window                  rr, cr;
 945         int                     i, x, y, wx, wy;
 946         unsigned int            mask;
 947
 948         for (i = 0; i < ScreenCount(display); i++)
 949                 if (screens[i].root == root)
 950                         break;
 951
 952         if (XQueryPointer(display, screens[i].root,
 953             &rr, &cr, &x, &y, &wx, &wy, &mask) != False) {
 954                 /* choose a region based on pointer location */
 955                 TAILQ_FOREACH(r, &screens[i].rl, entry)
 956                         if (x >= X(r) && x <= X(r) + WIDTH(r) &&
 957                             y >= Y(r) && y <= Y(r) + HEIGHT(r))
 958                                 break;
 959         }
 960
 961         if (r == NULL)
 962                 r = TAILQ_FIRST(&screens[i].rl);
 963
 964         return (r);
 965 }
 966
 967 struct ws_win *
 968 find_window(Window id)
 969 {
 970         struct ws_win           *win;
 971         int                     i, j;
 972
 973         for (i = 0; i < ScreenCount(display); i++)
 974                 for (j = 0; j < SWM_WS_MAX; j++)
 975                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 976                                 if (id == win->id)
 977                                         return (win);
 978         return (NULL);
 979 }
 980
 981 void
 982 spawn(struct swm_region *r, union arg *args)
 983 {
 984         char                    *ret;
 985         int                     si;
 986
 987         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 988         /*
 989          * The double-fork construct avoids zombie processes and keeps the code
 990          * clean from stupid signal handlers.
 991          */
 992         if (fork() == 0) {
 993                 if (fork() == 0) {
 994                         if (display)
 995                                 close(ConnectionNumber(display));
 996                         setenv("LD_PRELOAD", SWM_LIB, 1);
 997                         if (asprintf(&ret, "%d", r->ws->idx)) {
 998                                 setenv("_SWM_WS", ret, 1);
 999                                 free(ret);
1000                         }
1001                         if (asprintf(&ret, "%d", getpid())) {
1002                                 setenv("_SWM_PID", ret, 1);
1003                                 free(ret);
1004                         }
1005                         setsid();
1006                         /* kill stdin, mplayer, ssh-add etc. need that */
1007                         si = open("/dev/null", O_RDONLY, 0);
1008                         if (si == -1)
1009                                 err(1, "open /dev/null");
1010                         if (dup2(si, 0) == -1)
1011                                 err(1, "dup2 /dev/null");
1012                         execvp(args->argv[0], args->argv);
1013                         fprintf(stderr, "execvp failed\n");
1014                         perror(" failed");
1015                 }
1016                 exit(0);
1017         }
1018         wait(0);
1019 }
1020
1021 void
1022 spawnterm(struct swm_region *r, union arg *args)
1023 {
1024         DNPRINTF(SWM_D_MISC, "spawnterm\n");
1025
1026         if (term_width)
1027                 setenv("_SWM_XTERM_FONTADJ", "", 1);
1028         spawn(r, args);
1029 }
1030
1031 void
1032 spawnmenu(struct swm_region *r, union arg *args)
1033 {
1034         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
1035
1036         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
1037         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
1038         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
1039         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
1040         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
1041
1042         spawn(r, args);
1043 }
1044
1045 void
1046 unfocus_all(void)
1047 {
1048         struct ws_win           *win;
1049         int                     i, j;
1050
1051         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
1052
1053         for (i = 0; i < ScreenCount(display); i++)
1054                 for (j = 0; j < SWM_WS_MAX; j++)
1055                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
1056                                 if (win->ws->r == NULL)
1057                                         continue;
1058                                 grabbuttons(win, 0);
1059                                 XSetWindowBorder(display, win->id,
1060                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
1061                                 win->got_focus = 0;
1062                                 win->ws->focus = NULL;
1063                                 cur_focus = NULL;
1064                         }
1065 }
1066
1067 void
1068 focus_win(struct ws_win *win)
1069 {
1070         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
1071
1072         if (win == NULL)
1073                 return;
1074
1075         if (win->ws->focus != win && win->ws->focus != NULL)
1076                 win->ws->focus_prev = win->ws->focus;
1077
1078         unfocus_all();
1079         win->ws->focus = win;
1080         if (win->ws->r != NULL) {
1081                 cur_focus = win;
1082                 if (!win->got_focus) {
1083                         XSetWindowBorder(display, win->id,
1084                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
1085                         grabbuttons(win, 1);
1086                 }
1087                 win->got_focus = 1;
1088                 XSetInputFocus(display, win->id,
1089                     RevertToPointerRoot, CurrentTime);
1090         }
1091 }
1092
1093 void
1094 switchws(struct swm_region *r, union arg *args)
1095 {
1096         int                     wsid = args->id;
1097         struct swm_region       *this_r, *other_r;
1098         struct ws_win           *win;
1099         struct workspace        *new_ws, *old_ws;
1100
1101         this_r = r;
1102         old_ws = this_r->ws;
1103         new_ws = &this_r->s->ws[wsid];
1104
1105         DNPRINTF(SWM_D_WS, "switchws screen[%d]:%dx%d+%d+%d: "
1106             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
1107             old_ws->idx, wsid);
1108
1109         if (new_ws == old_ws)
1110                 return;
1111
1112         other_r = new_ws->r;
1113         if (!other_r) {
1114                 /* if the other workspace is hidden, switch windows */
1115                 /* map new window first to prevent ugly blinking */
1116                 old_ws->r = NULL;
1117                 old_ws->restack = 1;
1118
1119                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
1120                         XMapRaised(display, win->id);
1121
1122                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
1123                         XUnmapWindow(display, win->id);
1124         } else {
1125                 other_r->ws = old_ws;
1126                 old_ws->r = other_r;
1127         }
1128         this_r->ws = new_ws;
1129         new_ws->r = this_r;
1130
1131         ignore_enter = 1;
1132         /* set focus */
1133         if (new_ws->focus)
1134                 focus_win(new_ws->focus);
1135         stack();
1136         bar_update();
1137 }
1138
1139 void
1140 cyclews(struct swm_region *r, union arg *args)
1141 {
1142         union                   arg a;
1143         struct swm_screen       *s = r->s;
1144
1145         DNPRINTF(SWM_D_WS, "cyclews id %d "
1146             "in screen[%d]:%dx%d+%d+%d ws %d\n", args->id,
1147             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1148
1149         a.id = r->ws->idx;
1150         do {
1151                 switch (args->id) {
1152                 case SWM_ARG_ID_CYCLEWS_UP:
1153                         if (a.id < SWM_WS_MAX - 1)
1154                                 a.id++;
1155                         else
1156                                 a.id = 0;
1157                         break;
1158                 case SWM_ARG_ID_CYCLEWS_DOWN:
1159                         if (a.id > 0)
1160                                 a.id--;
1161                         else
1162                                 a.id = SWM_WS_MAX - 1;
1163                         break;
1164                 default:
1165                         return;
1166                 };
1167
1168                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
1169                         continue;
1170                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
1171                         continue;
1172
1173                 switchws(r, &a);
1174         } while (a.id != r->ws->idx);
1175 }
1176
1177 void
1178 cyclescr(struct swm_region *r, union arg *args)
1179 {
1180         struct swm_region       *rr;
1181         int                     i;
1182
1183         i = r->s->idx;
1184         switch (args->id) {
1185         case SWM_ARG_ID_CYCLESC_UP:
1186                 rr = TAILQ_NEXT(r, entry);
1187                 if (rr == NULL)
1188                         rr = TAILQ_FIRST(&screens[i].rl);
1189                 break;
1190         case SWM_ARG_ID_CYCLESC_DOWN:
1191                 rr = TAILQ_PREV(r, swm_region_list, entry);
1192                 if (rr == NULL)
1193                         rr = TAILQ_LAST(&screens[i].rl, swm_region_list);
1194                 break;
1195         default:
1196                 return;
1197         };
1198         unfocus_all();
1199         XSetInputFocus(display, PointerRoot, RevertToPointerRoot, CurrentTime);
1200         XWarpPointer(display, None, rr->s[i].root, 0, 0, 0, 0, rr->g.x,
1201             rr->g.y + bar_enabled ? bar_height : 0);
1202 }
1203
1204 void
1205 swapwin(struct swm_region *r, union arg *args)
1206 {
1207         struct ws_win           *target, *source;
1208         struct ws_win_list      *wl;
1209
1210
1211         DNPRINTF(SWM_D_WS, "swapwin id %d "
1212             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
1213             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1214         if (cur_focus == NULL)
1215                 return;
1216
1217         source = cur_focus;
1218         wl = &source->ws->winlist;
1219
1220         switch (args->id) {
1221         case SWM_ARG_ID_SWAPPREV:
1222                 target = TAILQ_PREV(source, ws_win_list, entry);
1223                 TAILQ_REMOVE(wl, cur_focus, entry);
1224                 if (target == NULL)
1225                         TAILQ_INSERT_TAIL(wl, source, entry);
1226                 else
1227                         TAILQ_INSERT_BEFORE(target, source, entry);
1228                 break;
1229         case SWM_ARG_ID_SWAPNEXT:
1230                 target = TAILQ_NEXT(source, entry);
1231                 TAILQ_REMOVE(wl, source, entry);
1232                 if (target == NULL)
1233                         TAILQ_INSERT_HEAD(wl, source, entry);
1234                 else
1235                         TAILQ_INSERT_AFTER(wl, target, source, entry);
1236                 break;
1237         case SWM_ARG_ID_SWAPMAIN:
1238                 target = TAILQ_FIRST(wl);
1239                 if (target == source) {
1240                         if (source->ws->focus_prev != NULL &&
1241                             source->ws->focus_prev != target)
1242
1243                                 source = source->ws->focus_prev;
1244                         else
1245                                 return;
1246                 }
1247                 source->ws->focus_prev = target;
1248                 TAILQ_REMOVE(wl, target, entry);
1249                 TAILQ_INSERT_BEFORE(source, target, entry);
1250                 TAILQ_REMOVE(wl, source, entry);
1251                 TAILQ_INSERT_HEAD(wl, source, entry);
1252                 break;
1253         default:
1254                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
1255                 return;
1256         }
1257
1258         ignore_enter = 1;
1259         stack();
1260 }
1261
1262 void
1263 focus(struct swm_region *r, union arg *args)
1264 {
1265         struct ws_win           *winfocus, *winlostfocus;
1266         struct ws_win_list      *wl;
1267
1268         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
1269         if (cur_focus == NULL)
1270                 return;
1271
1272         wl = &cur_focus->ws->winlist;
1273
1274         winlostfocus = cur_focus;
1275
1276         switch (args->id) {
1277         case SWM_ARG_ID_FOCUSPREV:
1278                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1279                 if (winfocus == NULL)
1280                         winfocus = TAILQ_LAST(wl, ws_win_list);
1281                 break;
1282
1283         case SWM_ARG_ID_FOCUSNEXT:
1284                 winfocus = TAILQ_NEXT(cur_focus, entry);
1285                 if (winfocus == NULL)
1286                         winfocus = TAILQ_FIRST(wl);
1287                 break;
1288
1289         case SWM_ARG_ID_FOCUSMAIN:
1290                 winfocus = TAILQ_FIRST(wl);
1291                 if (winfocus == cur_focus)
1292                         winfocus = cur_focus->ws->focus_prev;
1293                 if (winfocus == NULL)
1294                         return;
1295                 break;
1296
1297         default:
1298                 return;
1299         }
1300
1301         if (winfocus == winlostfocus || winfocus == NULL)
1302                 return;
1303
1304         XMapRaised(display, winfocus->id);
1305         focus_win(winfocus);
1306         XSync(display, False);
1307 }
1308
1309 void
1310 cycle_layout(struct swm_region *r, union arg *args)
1311 {
1312         struct workspace        *ws = r->ws;
1313
1314         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1315
1316         ws->cur_layout++;
1317         if (ws->cur_layout->l_stack == NULL)
1318                 ws->cur_layout = &layouts[0];
1319         ignore_enter = 1;
1320         stack();
1321 }
1322
1323 void
1324 stack_config(struct swm_region *r, union arg *args)
1325 {
1326         struct workspace        *ws = r->ws;
1327
1328         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1329             args->id, ws->idx);
1330
1331         if (ws->cur_layout->l_config != NULL)
1332                 ws->cur_layout->l_config(ws, args->id);
1333
1334         if (args->id != SWM_ARG_ID_STACKINIT);
1335                 stack();
1336 }
1337
1338 void
1339 stack(void) {
1340         struct swm_geometry     g;
1341         struct swm_region       *r;
1342         int                     i, j;
1343
1344         DNPRINTF(SWM_D_STACK, "stack\n");
1345
1346         for (i = 0; i < ScreenCount(display); i++) {
1347                 j = 0;
1348                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1349                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1350                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1351
1352                         /* start with screen geometry, adjust for bar */
1353                         g = r->g;
1354                         g.w -= 2;
1355                         g.h -= 2;
1356                         if (bar_enabled) {
1357                                 g.y += bar_height;
1358                                 g.h -= bar_height;
1359                         }
1360
1361                         r->ws->restack = 0;
1362                         r->ws->cur_layout->l_stack(r->ws, &g);
1363                 }
1364         }
1365         if (font_adjusted)
1366                 font_adjusted--;
1367         XSync(display, False);
1368 }
1369
1370 void
1371 stack_floater(struct ws_win *win, struct swm_region *r)
1372 {
1373         unsigned int            mask;
1374         XWindowChanges          wc;
1375
1376         bzero(&wc, sizeof wc);
1377         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1378         if ((win->quirks & SWM_Q_FULLSCREEN) && (win->g.w == WIDTH(r)) &&
1379             (win->g.h == HEIGHT(r)))
1380                 wc.border_width = 0;
1381         else
1382                 wc.border_width = 1;
1383         if (win->transient && (win->quirks & SWM_Q_TRANSSZ)) {
1384                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1385                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1386         }
1387         wc.width = win->g.w;
1388         wc.height = win->g.h;
1389         if (win->manual) {
1390                 wc.x = win->g.x;
1391                 wc.y = win->g.y;
1392         } else {
1393                 wc.x = (WIDTH(r) - win->g.w) / 2;
1394                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1395         }
1396
1397         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1398             win->id, wc.x, wc.y, wc.width, wc.height);
1399
1400         XConfigureWindow(display, win->id, mask, &wc);
1401 }
1402
1403 /*
1404  * Send keystrokes to terminal to decrease/increase the font size as the
1405  * window size changes.
1406  */
1407 void
1408 adjust_font(struct ws_win *win)
1409 {
1410         if (!(win->quirks & SWM_Q_XTERM_FONTADJ) ||
1411             win->floating || win->transient)
1412                 return;
1413
1414         if (win->sh.width_inc && win->last_inc != win->sh.width_inc &&
1415             win->g.w / win->sh.width_inc < term_width &&
1416             win->font_steps < SWM_MAX_FONT_STEPS) {
1417                 win->font_size_boundary[win->font_steps] =
1418                     (win->sh.width_inc * term_width) + win->sh.base_width;
1419                 win->font_steps++;
1420                 font_adjusted++;
1421                 win->last_inc = win->sh.width_inc;
1422                 fake_keypress(win, XK_KP_Subtract, ShiftMask);
1423         } else if (win->font_steps && win->last_inc != win->sh.width_inc &&
1424             win->g.w > win->font_size_boundary[win->font_steps - 1]) {
1425                 win->font_steps--;
1426                 font_adjusted++;
1427                 win->last_inc = win->sh.width_inc;
1428                 fake_keypress(win, XK_KP_Add, ShiftMask);
1429         }
1430 }
1431
1432 #define SWAPXY(g)       do {                            \
1433         int tmp;                                        \
1434         tmp = (g)->y; (g)->y = (g)->x; (g)->x = tmp;    \
1435         tmp = (g)->h; (g)->h = (g)->w; (g)->w = tmp;    \
1436 } while (0)
1437 void
1438 stack_master(struct workspace *ws, struct swm_geometry *g, int rot, int flip)
1439 {
1440         XWindowChanges          wc;
1441         struct swm_geometry     win_g, r_g = *g;
1442         struct ws_win           *win, *winfocus;
1443         int                     i, j, s, stacks;
1444         int                     w_inc = 1, h_inc, w_base = 1, h_base;
1445         int                     hrh, extra = 0, h_slice, last_h = 0;
1446         int                     split, colno, winno, mwin, msize, mscale;
1447         int                     remain, missing, v_slice;;
1448         unsigned int            mask;
1449
1450         DNPRINTF(SWM_D_STACK, "stack_master: workspace: %d\n rot=%s flip=%s",
1451             ws->idx, rot ? "yes" : "no", flip ? "yes" : "no");
1452
1453         if ((winno = count_win(ws, 0)) == 0)
1454                 return;
1455
1456         if (ws->focus == NULL)
1457                 ws->focus = TAILQ_FIRST(&ws->winlist);
1458         winfocus = cur_focus ? cur_focus : ws->focus;
1459
1460         TAILQ_FOREACH(win, &ws->winlist, entry)
1461                 if (win->transient == 0 && win->floating == 0)
1462                         break;
1463
1464         if (win == NULL)
1465                 goto notiles;
1466
1467         if (rot) {
1468                 w_inc = win->sh.width_inc;
1469                 w_base = win->sh.base_width;
1470                 mwin = ws->l_state.horizontal_mwin;
1471                 mscale = ws->l_state.horizontal_msize;
1472                 stacks = ws->l_state.horizontal_stacks;
1473                 SWAPXY(&r_g);
1474         } else {
1475                 w_inc = win->sh.height_inc;
1476                 w_base = win->sh.base_height;
1477                 mwin = ws->l_state.vertical_mwin;
1478                 mscale = ws->l_state.vertical_msize;
1479                 stacks = ws->l_state.vertical_stacks;
1480         }
1481         win_g = r_g;
1482
1483         if (stacks > winno - mwin)
1484                 stacks = winno - mwin;
1485         if (stacks < 1)
1486                 stacks = 1;
1487
1488         h_slice = r_g.h / SWM_H_SLICE;
1489         if (mwin && winno > mwin) {
1490                 v_slice = r_g.w / SWM_V_SLICE;
1491
1492                 split = mwin;
1493                 colno = split;
1494                 win_g.w = v_slice * mscale;
1495
1496                 if (w_inc > 1 && w_inc < v_slice) {
1497                         /* adjust for window's requested size increment */
1498                         remain = (win_g.w - w_base) % w_inc;
1499                         missing = w_inc - remain;
1500                         win_g.w -= remain;
1501                         extra += remain;
1502                 }
1503
1504                 msize = win_g.w;
1505                 if (flip)
1506                         win_g.x += r_g.w - msize;
1507         } else {
1508                 msize = -2;
1509                 colno = split = winno / stacks;
1510                 win_g.w = ((r_g.w - (stacks * 2) + 2) / stacks);
1511         }
1512         hrh = r_g.h / colno;
1513         extra = r_g.h - (colno * hrh);
1514         win_g.h = hrh - 2;
1515
1516         /*  stack all the tiled windows */
1517         i = j = 0, s = stacks;
1518         TAILQ_FOREACH(win, &ws->winlist, entry) {
1519                 if (win->transient != 0 || win->floating != 0)
1520                         continue;
1521
1522                 if (split && i == split) {
1523                         colno = (winno - mwin) / stacks;
1524                         if (s <= (winno - mwin) % stacks)
1525                                 colno++;
1526                         split = split + colno;
1527                         hrh = (r_g.h / colno);
1528                         extra = r_g.h - (colno * hrh);
1529                         if (flip)
1530                                 win_g.x = r_g.x;
1531                         else
1532                                 win_g.x += win_g.w + 2;
1533                         win_g.w = (r_g.w - msize - (stacks * 2)) / stacks;
1534                         if (s == 1)
1535                                 win_g.w += (r_g.w - msize - (stacks * 2)) %
1536                                     stacks;
1537                         s--;
1538                         j = 0;
1539                 }
1540                 win_g.h = hrh - 2;
1541                 if (rot) {
1542                         h_inc = win->sh.width_inc;
1543                         h_base = win->sh.base_width;
1544                 } else {
1545                         h_inc = win->sh.height_inc;
1546                         h_base = win->sh.base_height;
1547                 }
1548                 if (j == colno - 1) {
1549                         win_g.h = hrh + extra;
1550                 } else if (h_inc > 1 && h_inc < h_slice) {
1551                         /* adjust for window's requested size increment */
1552                         remain = (win_g.h - h_base) % h_inc;
1553                         missing = h_inc - remain;
1554
1555                         if (missing <= extra || j == 0) {
1556                                 extra -= missing;
1557                                 win_g.h += missing;
1558                         } else {
1559                                 win_g.h -= remain;
1560                                 extra += remain;
1561                         }
1562                 }
1563
1564                 if (j == 0)
1565                         win_g.y = r_g.y;
1566                 else
1567                         win_g.y += last_h + 2;
1568
1569                 bzero(&wc, sizeof wc);
1570                 wc.border_width = 1;
1571                 if (rot) {
1572                         win->g.x = wc.x = win_g.y;
1573                         win->g.y = wc.y = win_g.x;
1574                         win->g.w = wc.width = win_g.h;
1575                         win->g.h = wc.height = win_g.w;
1576                 } else {
1577                         win->g.x = wc.x = win_g.x;
1578                         win->g.y = wc.y = win_g.y;
1579                         win->g.w = wc.width = win_g.w;
1580                         win->g.h = wc.height = win_g.h;
1581                 }
1582                 adjust_font(win);
1583                 mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1584                 XConfigureWindow(display, win->id, mask, &wc);
1585                 XMapRaised(display, win->id);
1586
1587                 last_h = win_g.h;
1588                 i++;
1589                 j++;
1590         }
1591
1592  notiles:
1593         /* now, stack all the floaters and transients */
1594         TAILQ_FOREACH(win, &ws->winlist, entry) {
1595                 if (win->transient == 0 && win->floating == 0)
1596                         continue;
1597
1598                 stack_floater(win, ws->r);
1599                 XMapRaised(display, win->id);
1600         }
1601
1602         if (winfocus)
1603                 focus_win(winfocus); /* has to be done outside of the loop */
1604 }
1605
1606 void
1607 vertical_config(struct workspace *ws, int id)
1608 {
1609         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1610
1611         switch (id) {
1612         case SWM_ARG_ID_STACKRESET:
1613         case SWM_ARG_ID_STACKINIT:
1614                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1615                 ws->l_state.vertical_mwin = 1;
1616                 ws->l_state.vertical_stacks = 1;
1617                 break;
1618         case SWM_ARG_ID_MASTERSHRINK:
1619                 if (ws->l_state.vertical_msize > 1)
1620                         ws->l_state.vertical_msize--;
1621                 break;
1622         case SWM_ARG_ID_MASTERGROW:
1623                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1624                         ws->l_state.vertical_msize++;
1625                 break;
1626         case SWM_ARG_ID_MASTERADD:
1627                 ws->l_state.vertical_mwin++;
1628                 break;
1629         case SWM_ARG_ID_MASTERDEL:
1630                 if (ws->l_state.vertical_mwin > 0)
1631                         ws->l_state.vertical_mwin--;
1632                 break;
1633         case SWM_ARG_ID_STACKINC:
1634                 ws->l_state.vertical_stacks++;
1635                 break;
1636         case SWM_ARG_ID_STACKDEC:
1637                 if (ws->l_state.vertical_stacks > 1)
1638                         ws->l_state.vertical_stacks--;
1639                 break;
1640         default:
1641                 return;
1642         }
1643 }
1644
1645 void
1646 vertical_stack(struct workspace *ws, struct swm_geometry *g)
1647 {
1648         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1649
1650         stack_master(ws, g, 0, 0);
1651 }
1652
1653 void
1654 horizontal_config(struct workspace *ws, int id)
1655 {
1656         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1657
1658         switch (id) {
1659         case SWM_ARG_ID_STACKRESET:
1660         case SWM_ARG_ID_STACKINIT:
1661                 ws->l_state.horizontal_mwin = 1;
1662                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1663                 ws->l_state.horizontal_stacks = 1;
1664                 break;
1665         case SWM_ARG_ID_MASTERSHRINK:
1666                 if (ws->l_state.horizontal_msize > 1)
1667                         ws->l_state.horizontal_msize--;
1668                 break;
1669         case SWM_ARG_ID_MASTERGROW:
1670                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1671                         ws->l_state.horizontal_msize++;
1672                 break;
1673         case SWM_ARG_ID_MASTERADD:
1674                 ws->l_state.horizontal_mwin++;
1675                 break;
1676         case SWM_ARG_ID_MASTERDEL:
1677                 if (ws->l_state.horizontal_mwin > 0)
1678                         ws->l_state.horizontal_mwin--;
1679                 break;
1680         case SWM_ARG_ID_STACKINC:
1681                 ws->l_state.horizontal_stacks++;
1682                 break;
1683         case SWM_ARG_ID_STACKDEC:
1684                 if (ws->l_state.horizontal_stacks > 1)
1685                         ws->l_state.horizontal_stacks--;
1686                 break;
1687         default:
1688                 return;
1689         }
1690 }
1691
1692 void
1693 horizontal_stack(struct workspace *ws, struct swm_geometry *g)
1694 {
1695         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1696
1697         stack_master(ws, g, 1, 0);
1698 }
1699
1700 /* fullscreen view */
1701 void
1702 max_stack(struct workspace *ws, struct swm_geometry *g) {
1703         XWindowChanges          wc;
1704         struct swm_geometry     gg = *g;
1705         struct ws_win           *win, *winfocus;
1706         unsigned int            mask;
1707
1708         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1709
1710         if (count_win(ws, 0) == 0)
1711                 return;
1712
1713         if (ws->focus == NULL)
1714                 ws->focus = TAILQ_FIRST(&ws->winlist);
1715         winfocus = cur_focus ? cur_focus : ws->focus;
1716
1717         TAILQ_FOREACH(win, &ws->winlist, entry) {
1718                 if (win->transient != 0 || win->floating != 0) {
1719                         if (win == ws->focus) {
1720                                 /* XXX maximize? */
1721                                 stack_floater(win, ws->r);
1722                                 XMapRaised(display, win->id);
1723                         } else
1724                                 XUnmapWindow(display, win->id);
1725                 } else {
1726                         bzero(&wc, sizeof wc);
1727                         wc.border_width = 1;
1728                         win->g.x = wc.x = gg.x;
1729                         win->g.y = wc.y = gg.y;
1730                         win->g.w = wc.width = gg.w;
1731                         win->g.h = wc.height = gg.h;
1732                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1733                         XConfigureWindow(display, win->id, mask, &wc);
1734
1735                         if (win == ws->focus) {
1736                                 XMapRaised(display, win->id);
1737                         } else
1738                                 XUnmapWindow(display, win->id);
1739                 }
1740         }
1741
1742         if (winfocus)
1743                 focus_win(winfocus); /* has to be done outside of the loop */
1744 }
1745
1746 void
1747 send_to_ws(struct swm_region *r, union arg *args)
1748 {
1749         int                     wsid = args->id;
1750         struct ws_win           *win = cur_focus;
1751         struct workspace        *ws, *nws;
1752         Atom                    ws_idx_atom = 0;
1753         unsigned char           ws_idx_str[SWM_PROPLEN];
1754
1755         if (win == NULL)
1756                 return;
1757
1758         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1759
1760         ws = win->ws;
1761         nws = &win->s->ws[wsid];
1762
1763         XUnmapWindow(display, win->id);
1764
1765         /* find a window to focus */
1766         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1767         if (ws->focus == NULL)
1768                 ws->focus = TAILQ_FIRST(&ws->winlist);
1769         if (ws->focus == win)
1770                 ws->focus = NULL;
1771
1772         TAILQ_REMOVE(&ws->winlist, win, entry);
1773
1774         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1775         win->ws = nws;
1776
1777         /* Try to update the window's workspace property */
1778         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1779         if (ws_idx_atom &&
1780             snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
1781                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1782                     ws_idx_str);
1783                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1784                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1785         }
1786
1787         if (count_win(nws, 1) == 1)
1788                 nws->focus = win;
1789         ws->restack = 1;
1790         nws->restack = 1;
1791
1792         stack();
1793 }
1794
1795 void
1796 wkill(struct swm_region *r, union arg *args)
1797 {
1798         DNPRINTF(SWM_D_MISC, "wkill %d\n", args->id);
1799
1800         if(r->ws->focus == NULL)
1801                 return;
1802
1803         if (args->id == SWM_ARG_ID_KILLWINDOW)
1804                 XKillClient(display, r->ws->focus->id);
1805         else
1806                 if (r->ws->focus->can_delete)
1807                         client_msg(r->ws->focus, adelete);
1808 }
1809
1810 void
1811 screenshot(struct swm_region *r, union arg *args)
1812 {
1813         union arg                       a;
1814
1815         DNPRINTF(SWM_D_MISC, "screenshot\n");
1816
1817         if (ss_enabled == 0)
1818                 return;
1819
1820         switch (args->id) {
1821         case SWM_ARG_ID_SS_ALL:
1822                 spawn_screenshot[1] = "full";
1823                 break;
1824         case SWM_ARG_ID_SS_WINDOW:
1825                 spawn_screenshot[1] = "window";
1826                 break;
1827         default:
1828                 return;
1829         }
1830         a.argv = spawn_screenshot;
1831         spawn(r, &a);
1832 }
1833
1834 void
1835 floating_toggle(struct swm_region *r, union arg *args)
1836 {
1837         struct ws_win   *win = cur_focus;
1838
1839         if (win == NULL)
1840                 return;
1841
1842         win->floating = !win->floating;
1843         win->manual = 0;
1844         stack();
1845         focus_win(win);
1846 }
1847
1848 /* key definitions */
1849 struct key {
1850         unsigned int            mod;
1851         KeySym                  keysym;
1852         void                    (*func)(struct swm_region *r, union arg *);
1853         union arg               args;
1854 } keys[] = {
1855         /* modifier             key     function                argument */
1856         { MODKEY,               XK_space,       cycle_layout,   {0} },
1857         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1858         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1859         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1860         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1861         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1862         { MODKEY | ShiftMask,   XK_comma,       stack_config,   {.id = SWM_ARG_ID_STACKINC} },
1863         { MODKEY | ShiftMask,   XK_period,      stack_config,   {.id = SWM_ARG_ID_STACKDEC} },
1864         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1865         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1866         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1867         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1868         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1869         { MODKEY | ShiftMask,   XK_Return,      spawnterm,      {.argv = spawn_term} },
1870         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1871         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1872         { MODKEY,               XK_q,           restart,        {0} },
1873         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1874         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1875         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1876         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1877         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1878         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1879         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1880         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1881         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1882         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1883         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1884         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1885         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1886         { MODKEY | ShiftMask,   XK_Right,       cyclescr,       {.id = SWM_ARG_ID_CYCLESC_UP} },
1887         { MODKEY | ShiftMask,   XK_Left,        cyclescr,       {.id = SWM_ARG_ID_CYCLESC_DOWN} },
1888         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1889         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1890         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1891         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1892         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1893         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1894         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1895         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1896         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1897         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1898         { MODKEY,               XK_b,           bar_toggle,     {0} },
1899         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1900         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1901         { MODKEY | ShiftMask,   XK_x,           wkill,          {.id = SWM_ARG_ID_KILLWINDOW} },
1902         { MODKEY,               XK_x,           wkill,          {.id = SWM_ARG_ID_DELETEWINDOW} },
1903         { MODKEY,               XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_ALL} },
1904         { MODKEY | ShiftMask,   XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_WINDOW} },
1905         { MODKEY,               XK_t,           floating_toggle,{0} },
1906         { MODKEY | ShiftMask,   XK_v,           version,        {0} },
1907         { MODKEY | ShiftMask,   XK_Delete,      spawn,          {.argv = spawn_lock} },
1908         { MODKEY | ShiftMask,   XK_i,           spawn,          {.argv = spawn_initscr} },
1909 };
1910
1911 void
1912 resize_window(struct ws_win *win, int center)
1913 {
1914         unsigned int            mask;
1915         XWindowChanges          wc;
1916         struct swm_region       *r;
1917
1918         r = root_to_region(win->wa.root);
1919         bzero(&wc, sizeof wc);
1920         mask = CWBorderWidth | CWWidth | CWHeight;
1921         wc.border_width = 1;
1922         wc.width = win->g.w;
1923         wc.height = win->g.h;
1924         if (center == SWM_ARG_ID_CENTER) {
1925                 wc.x = (WIDTH(r) - win->g.w) / 2;
1926                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1927                 mask |= CWX | CWY;
1928         }
1929
1930         DNPRINTF(SWM_D_STACK, "resize_window: win %lu x %d y %d w %d h %d\n",
1931             win->id, wc.x, wc.y, wc.width, wc.height);
1932
1933         XConfigureWindow(display, win->id, mask, &wc);
1934         config_win(win);
1935 }
1936
1937 void
1938 resize(struct ws_win *win, union arg *args)
1939 {
1940         XEvent                  ev;
1941         Time                    time = 0;
1942
1943         DNPRINTF(SWM_D_MOUSE, "resize: win %lu floating %d trans %d\n",
1944             win->id, win->floating, win->transient);
1945
1946         if (!(win->transient != 0 || win->floating != 0))
1947                 return;
1948
1949         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
1950             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
1951                 return;
1952         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w, win->g.h);
1953         do {
1954                 XMaskEvent(display, MOUSEMASK | ExposureMask |
1955                     SubstructureRedirectMask, &ev);
1956                 switch(ev.type) {
1957                 case ConfigureRequest:
1958                 case Expose:
1959                 case MapRequest:
1960                         handler[ev.type](&ev);
1961                         break;
1962                 case MotionNotify:
1963                         if (ev.xmotion.x <= 1)
1964                                 ev.xmotion.x = 1;
1965                         if (ev.xmotion.y <= 1)
1966                                 ev.xmotion.y = 1;
1967                         win->g.w = ev.xmotion.x;
1968                         win->g.h = ev.xmotion.y;
1969
1970                         /* not free, don't sync more than 60 times / second */
1971                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
1972                                 time = ev.xmotion.time;
1973                                 XSync(display, False);
1974                                 resize_window(win, args->id);
1975                         }
1976                         break;
1977                 }
1978         } while (ev.type != ButtonRelease);
1979         if (time) {
1980                 XSync(display, False);
1981                 resize_window(win, args->id);
1982         }
1983         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w - 1,
1984             win->g.h - 1);
1985         XUngrabPointer(display, CurrentTime);
1986
1987         /* drain events */
1988         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
1989 }
1990
1991 void
1992 move_window(struct ws_win *win)
1993 {
1994         unsigned int            mask;
1995         XWindowChanges          wc;
1996         struct swm_region       *r;
1997
1998         r = root_to_region(win->wa.root);
1999         bzero(&wc, sizeof wc);
2000         mask = CWX | CWY;
2001         wc.x = win->g.x;
2002         wc.y = win->g.y;
2003
2004         DNPRINTF(SWM_D_STACK, "move_window: win %lu x %d y %d w %d h %d\n",
2005             win->id, wc.x, wc.y, wc.width, wc.height);
2006
2007         XConfigureWindow(display, win->id, mask, &wc);
2008         config_win(win);
2009 }
2010
2011 void
2012 move(struct ws_win *win, union arg *args)
2013 {
2014         XEvent                  ev;
2015         Time                    time = 0;
2016         int                     restack = 0;
2017
2018         DNPRINTF(SWM_D_MOUSE, "move: win %lu floating %d trans %d\n",
2019             win->id, win->floating, win->transient);
2020
2021         if (win->floating == 0) {
2022                 win->floating = 1;
2023                 win->manual = 1;
2024                 restack = 1;
2025         }
2026
2027         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
2028             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
2029                 return;
2030         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
2031         do {
2032                 XMaskEvent(display, MOUSEMASK | ExposureMask |
2033                     SubstructureRedirectMask, &ev);
2034                 switch(ev.type) {
2035                 case ConfigureRequest:
2036                 case Expose:
2037                 case MapRequest:
2038                         handler[ev.type](&ev);
2039                         break;
2040                 case MotionNotify:
2041                         win->g.x = ev.xmotion.x_root;
2042                         win->g.y = ev.xmotion.y_root;
2043
2044                         /* not free, don't sync more than 60 times / second */
2045                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
2046                                 time = ev.xmotion.time;
2047                                 XSync(display, False);
2048                                 move_window(win);
2049                         }
2050                         break;
2051                 }
2052         } while (ev.type != ButtonRelease);
2053         if (time) {
2054                 XSync(display, False);
2055                 move_window(win);
2056         }
2057         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
2058         XUngrabPointer(display, CurrentTime);
2059         if (restack)
2060                 stack();
2061
2062         /* drain events */
2063         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
2064 }
2065
2066 /* mouse */
2067 enum { client_click, root_click };
2068 struct button {
2069         unsigned int            action;
2070         unsigned int            mask;
2071         unsigned int            button;
2072         void                    (*func)(struct ws_win *, union arg *);
2073         union arg               args;
2074 } buttons[] = {
2075           /* action             key             mouse button    func            args */
2076         { client_click,         MODKEY,         Button3,        resize,         {.id = SWM_ARG_ID_DONTCENTER} },
2077         { client_click,         MODKEY | ShiftMask, Button3,    resize,         {.id = SWM_ARG_ID_CENTER} },
2078         { client_click,         MODKEY,         Button1,        move,           {0} },
2079 };
2080
2081 void
2082 updatenumlockmask(void)
2083 {
2084         unsigned int            i, j;
2085         XModifierKeymap         *modmap;
2086
2087         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
2088         numlockmask = 0;
2089         modmap = XGetModifierMapping(display);
2090         for (i = 0; i < 8; i++)
2091                 for (j = 0; j < modmap->max_keypermod; j++)
2092                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
2093                           == XKeysymToKeycode(display, XK_Num_Lock))
2094                                 numlockmask = (1 << i);
2095
2096         XFreeModifiermap(modmap);
2097 }
2098
2099 void
2100 grabkeys(void)
2101 {
2102         unsigned int            i, j, k;
2103         KeyCode                 code;
2104         unsigned int            modifiers[] =
2105             { 0, LockMask, numlockmask, numlockmask | LockMask };
2106
2107         DNPRINTF(SWM_D_MISC, "grabkeys\n");
2108         updatenumlockmask();
2109
2110         for (k = 0; k < ScreenCount(display); k++) {
2111                 if (TAILQ_EMPTY(&screens[k].rl))
2112                         continue;
2113                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
2114                 for (i = 0; i < LENGTH(keys); i++) {
2115                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
2116                                 for (j = 0; j < LENGTH(modifiers); j++)
2117                                         XGrabKey(display, code,
2118                                             keys[i].mod | modifiers[j],
2119                                             screens[k].root, True,
2120                                             GrabModeAsync, GrabModeAsync);
2121                 }
2122         }
2123 }
2124
2125 void
2126 grabbuttons(struct ws_win *win, int focused)
2127 {
2128         unsigned int            i, j;
2129         unsigned int            modifiers[] =
2130             { 0, LockMask, numlockmask, numlockmask|LockMask };
2131
2132         updatenumlockmask();
2133         XUngrabButton(display, AnyButton, AnyModifier, win->id);
2134         if(focused) {
2135                 for (i = 0; i < LENGTH(buttons); i++)
2136                         if (buttons[i].action == client_click)
2137                                 for (j = 0; j < LENGTH(modifiers); j++)
2138                                         XGrabButton(display, buttons[i].button,
2139                                             buttons[i].mask | modifiers[j],
2140                                             win->id, False, BUTTONMASK,
2141                                             GrabModeAsync, GrabModeSync, None,
2142                                             None);
2143         } else
2144                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
2145                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
2146 }
2147
2148 void
2149 expose(XEvent *e)
2150 {
2151         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
2152 }
2153
2154 void
2155 keypress(XEvent *e)
2156 {
2157         unsigned int            i;
2158         KeySym                  keysym;
2159         XKeyEvent               *ev = &e->xkey;
2160
2161         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
2162
2163         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
2164         for (i = 0; i < LENGTH(keys); i++)
2165                 if (keysym == keys[i].keysym
2166                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
2167                    && keys[i].func)
2168                         keys[i].func(root_to_region(ev->root),
2169                             &(keys[i].args));
2170 }
2171
2172 void
2173 buttonpress(XEvent *e)
2174 {
2175         XButtonPressedEvent     *ev = &e->xbutton;
2176
2177         struct ws_win           *win;
2178         int                     i, action;
2179
2180         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
2181
2182         action = root_click;
2183         if ((win = find_window(ev->window)) == NULL)
2184                 return;
2185         else {
2186                 focus_win(win);
2187                 action = client_click;
2188         }
2189
2190         for (i = 0; i < LENGTH(buttons); i++)
2191                 if (action == buttons[i].action && buttons[i].func &&
2192                     buttons[i].button == ev->button &&
2193                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
2194                         buttons[i].func(win, &buttons[i].args);
2195 }
2196
2197 void
2198 set_win_state(struct ws_win *win, long state)
2199 {
2200         long                    data[] = {state, None};
2201
2202         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
2203
2204         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
2205             (unsigned char *)data, 2);
2206 }
2207
2208 struct ws_win *
2209 manage_window(Window id)
2210 {
2211         Window                  trans;
2212         struct workspace        *ws;
2213         struct ws_win           *win;
2214         int                     format, i, ws_idx, n;
2215         unsigned long           nitems, bytes;
2216         Atom                    ws_idx_atom = 0, type;
2217         Atom                    *prot = NULL, *pp;
2218         unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
2219         struct swm_region       *r;
2220         long                    mask;
2221         const char              *errstr;
2222         XWindowChanges          wc;
2223
2224         if ((win = find_window(id)) != NULL)
2225                         return (win);   /* already being managed */
2226
2227         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
2228                 errx(1, "calloc: failed to allocate memory for new window");
2229
2230         /* Get all the window data in one shot */
2231         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2232         if (ws_idx_atom)
2233                 XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
2234                     False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
2235         XGetWindowAttributes(display, id, &win->wa);
2236         XGetTransientForHint(display, id, &trans);
2237         XGetWMNormalHints(display, id, &win->sh, &mask); /* XXX function? */
2238         if (trans) {
2239                 win->transient = trans;
2240                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
2241                     (unsigned)win->id, win->transient);
2242         }
2243         /* get supported protocols */
2244         if (XGetWMProtocols(display, id, &prot, &n)) {
2245                 for (i = 0, pp = prot; i < n; i++, pp++)
2246                         if (*pp == adelete)
2247                                 win->can_delete = 1;
2248                 if (prot)
2249                         XFree(prot);
2250         }
2251
2252         /*
2253          * Figure out where to put the window. If it was previously assigned to
2254          * a workspace (either by spawn() or manually moving), and isn't
2255          * transient, * put it in the same workspace
2256          */
2257         r = root_to_region(win->wa.root);
2258         if (prop && win->transient == 0) {
2259                 DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
2260                 ws_idx = strtonum(prop, 0, 9, &errstr);
2261                 if (errstr) {
2262                         DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
2263                             errstr, prop);
2264                 }
2265                 ws = &r->s->ws[ws_idx];
2266         } else
2267                 ws = r->ws;
2268
2269         /* set up the window layout */
2270         win->id = id;
2271         win->ws = ws;
2272         win->s = r->s;  /* this never changes */
2273         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
2274
2275         win->g.w = win->wa.width;
2276         win->g.h = win->wa.height;
2277         win->g.x = win->wa.x;
2278         win->g.y = win->wa.y;
2279
2280         /* Set window properties so we can remember this after reincarnation */
2281         if (ws_idx_atom && prop == NULL &&
2282             snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
2283                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
2284                     ws_idx_str);
2285                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
2286                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
2287         }
2288         XFree(prop);
2289
2290         if (XGetClassHint(display, win->id, &win->ch)) {
2291                 DNPRINTF(SWM_D_CLASS, "class: %s name: %s\n",
2292                     win->ch.res_class, win->ch.res_name);
2293                 for (i = 0; quirks[i].class != NULL && quirks[i].name != NULL &&
2294                     quirks[i].quirk != 0; i++){
2295                         if (!strcmp(win->ch.res_class, quirks[i].class) &&
2296                             !strcmp(win->ch.res_name, quirks[i].name)) {
2297                                 DNPRINTF(SWM_D_CLASS, "found: %s name: %s\n",
2298                                     win->ch.res_class, win->ch.res_name);
2299                                 if (quirks[i].quirk & SWM_Q_FLOAT)
2300                                         win->floating = 1;
2301                                 win->quirks = quirks[i].quirk;
2302                         }
2303                 }
2304         }
2305
2306         /* alter window position if quirky */
2307         if (win->quirks & SWM_Q_ANYWHERE) {
2308                 win->manual = 1; /* don't center the quirky windows */
2309                 bzero(&wc, sizeof wc);
2310                 mask = 0;
2311                 if (win->g.y < bar_height) {
2312                         win->g.y = wc.y = bar_height;
2313                         mask |= CWY;
2314                 }
2315                 if (win->g.w + win->g.x > WIDTH(r)) {
2316                         win->g.x = wc.x = WIDTH(win->ws->r) - win->g.w - 2;
2317                         mask |= CWX;
2318                 }
2319                 wc.border_width = 1;
2320                 mask |= CWBorderWidth;
2321                 XConfigureWindow(display, win->id, mask, &wc);
2322         }
2323
2324         /* Reset font sizes (the bruteforce way; no default keybinding). */
2325         if (win->quirks & SWM_Q_XTERM_FONTADJ) {
2326                 for (i = 0; i < SWM_MAX_FONT_STEPS; i++)
2327                         fake_keypress(win, XK_KP_Subtract, ShiftMask);
2328                 for (i = 0; i < SWM_MAX_FONT_STEPS; i++)
2329                         fake_keypress(win, XK_KP_Add, ShiftMask);
2330         }
2331
2332         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
2333             PropertyChangeMask | StructureNotifyMask);
2334
2335         set_win_state(win, NormalState);
2336
2337         /* floaters need to be mapped if they are in the current workspace */
2338         if (win->floating && (ws->idx == r->ws->idx))
2339                 XMapRaised(display, win->id);
2340
2341         /* make new win focused */
2342         focus_win(win);
2343
2344         return (win);
2345 }
2346
2347 void
2348 unmanage_window(struct ws_win *win)
2349 {
2350         struct workspace        *ws;
2351
2352         if (win == NULL)
2353                 return;
2354
2355         DNPRINTF(SWM_D_MISC, "unmanage_window:  %lu\n", win->id);
2356
2357         /* don't unmanage if we are switching workspaces */
2358         ws = win->ws;
2359         if (ws->restack)
2360                 return;
2361
2362         /* find a window to focus */
2363         if (ws->focus == win)
2364                 ws->focus = TAILQ_PREV(win, ws_win_list, entry);
2365         if (ws->focus == NULL)
2366                 ws->focus = TAILQ_FIRST(&ws->winlist);
2367         if (ws->focus == NULL || ws->focus == win) {
2368                 ws->focus = NULL;
2369                 unfocus_all();
2370         } else
2371                 focus_win(ws->focus);
2372         if (ws->focus_prev == win)
2373                 ws->focus_prev = NULL;
2374
2375         TAILQ_REMOVE(&win->ws->winlist, win, entry);
2376         set_win_state(win, WithdrawnState);
2377         if (win->ch.res_class)
2378                 XFree(win->ch.res_class);
2379         if (win->ch.res_name)
2380                 XFree(win->ch.res_name);
2381         free(win);
2382 }
2383
2384 void
2385 configurerequest(XEvent *e)
2386 {
2387         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
2388         struct ws_win           *win;
2389         int                     new = 0;
2390         XWindowChanges          wc;
2391
2392         if ((win = find_window(ev->window)) == NULL)
2393                 new = 1;
2394
2395         if (new) {
2396                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
2397                     ev->window);
2398                 bzero(&wc, sizeof wc);
2399                 wc.x = ev->x;
2400                 wc.y = ev->y;
2401                 wc.width = ev->width;
2402                 wc.height = ev->height;
2403                 wc.border_width = ev->border_width;
2404                 wc.sibling = ev->above;
2405                 wc.stack_mode = ev->detail;
2406                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
2407         } else {
2408                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
2409                     ev->window);
2410                 if (win->floating) {
2411                         if (ev->value_mask & CWX)
2412                                 win->g.x = ev->x;
2413                         if (ev->value_mask & CWY)
2414                                 win->g.y = ev->y;
2415                         if (ev->value_mask & CWWidth)
2416                                 win->g.w = ev->width;
2417                         if (ev->value_mask & CWHeight)
2418                                 win->g.h = ev->height;
2419                         if (win->ws->r != NULL) {
2420                                 /* this seems to be full screen */
2421                                 if (win->g.w >= WIDTH(win->ws->r)) {
2422                                         win->g.x = 0;
2423                                         win->g.w = WIDTH(win->ws->r);
2424                                         ev->value_mask |= CWX | CWWidth;
2425                                 }
2426                                 if (win->g.h >= HEIGHT(win->ws->r)) {
2427                                         /* kill border */
2428                                         win->g.y = 0;
2429                                         win->g.h = HEIGHT(win->ws->r);
2430                                         ev->value_mask |= CWY | CWHeight;
2431                                 }
2432                         }
2433                         if ((ev->value_mask & (CWX | CWY)) &&
2434                             !(ev->value_mask & (CWWidth | CWHeight)))
2435                                 config_win(win);
2436                         XMoveResizeWindow(display, win->id,
2437                             win->g.x, win->g.y, win->g.w, win->g.h);
2438                 } else
2439                         config_win(win);
2440         }
2441 }
2442
2443 void
2444 configurenotify(XEvent *e)
2445 {
2446         struct ws_win           *win;
2447         long                    mask;
2448
2449         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
2450             e->xconfigure.window);
2451
2452         win = find_window(e->xconfigure.window);
2453         XMapWindow(display, win->id);
2454         XGetWMNormalHints(display, win->id, &win->sh, &mask);
2455         adjust_font(win);
2456         XMapWindow(display, win->id);
2457         if (font_adjusted)
2458                 stack();
2459 }
2460
2461 void
2462 destroynotify(XEvent *e)
2463 {
2464         struct ws_win           *win;
2465         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2466
2467         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
2468
2469         if ((win = find_window(ev->window)) != NULL) {
2470                 unmanage_window(win);
2471                 stack();
2472         }
2473 }
2474
2475 void
2476 enternotify(XEvent *e)
2477 {
2478         XCrossingEvent          *ev = &e->xcrossing;
2479         struct ws_win           *win;
2480
2481         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
2482
2483         if (ignore_enter) {
2484                 /* eat event(r) to prevent autofocus */
2485                 ignore_enter--;
2486                 return;
2487         }
2488
2489         if ((win = find_window(ev->window)) != NULL)
2490                 focus_win(win);
2491 }
2492
2493 void
2494 focusin(XEvent *e)
2495 {
2496         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
2497 }
2498
2499 void
2500 mappingnotify(XEvent *e)
2501 {
2502         XMappingEvent           *ev = &e->xmapping;
2503
2504         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
2505
2506         XRefreshKeyboardMapping(ev);
2507         if (ev->request == MappingKeyboard)
2508                 grabkeys();
2509 }
2510
2511 void
2512 maprequest(XEvent *e)
2513 {
2514         XMapRequestEvent        *ev = &e->xmaprequest;
2515         XWindowAttributes       wa;
2516
2517         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
2518             e->xmaprequest.window);
2519
2520         if (!XGetWindowAttributes(display, ev->window, &wa))
2521                 return;
2522         if (wa.override_redirect)
2523                 return;
2524         manage_window(e->xmaprequest.window);
2525
2526         stack();
2527 }
2528
2529 void
2530 propertynotify(XEvent *e)
2531 {
2532         struct ws_win           *win;
2533         XPropertyEvent          *ev = &e->xproperty;
2534
2535         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
2536             ev->window);
2537
2538         if (ev->state == PropertyDelete)
2539                 return; /* ignore */
2540         win = find_window(ev->window);
2541         if (win == NULL)
2542                 return;
2543
2544         switch (ev->atom) {
2545         case XA_WM_NORMAL_HINTS:
2546 #if 0
2547                 long            mask;
2548                 XGetWMNormalHints(display, win->id, &win->sh, &mask);
2549                 fprintf(stderr, "normal hints: flag 0x%x\n", win->sh.flags);
2550                 if (win->sh.flags & PMinSize) {
2551                         win->g.w = win->sh.min_width;
2552                         win->g.h = win->sh.min_height;
2553                         fprintf(stderr, "min %d %d\n", win->g.w, win->g.h);
2554                 }
2555                 XMoveResizeWindow(display, win->id,
2556                     win->g.x, win->g.y, win->g.w, win->g.h);
2557 #endif
2558                 break;
2559         default:
2560                 break;
2561         }
2562 }
2563
2564 void
2565 unmapnotify(XEvent *e)
2566 {
2567         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2568         struct ws_win           *win;
2569
2570         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
2571
2572         if ((win = find_window(ev->window)) != NULL)
2573                 if (win->transient)
2574                         unmanage_window(win);
2575 }
2576
2577 void
2578 visibilitynotify(XEvent *e)
2579 {
2580         int                     i;
2581         struct swm_region       *r;
2582
2583         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
2584             e->xvisibility.window);
2585         if (e->xvisibility.state == VisibilityUnobscured)
2586                 for (i = 0; i < ScreenCount(display); i++)
2587                         TAILQ_FOREACH(r, &screens[i].rl, entry)
2588                                 if (e->xvisibility.window == r->bar_window)
2589                                         bar_update();
2590 }
2591
2592 int
2593 xerror_start(Display *d, XErrorEvent *ee)
2594 {
2595         other_wm = 1;
2596         return (-1);
2597 }
2598
2599 int
2600 xerror(Display *d, XErrorEvent *ee)
2601 {
2602         /* fprintf(stderr, "error: %p %p\n", display, ee); */
2603         return (-1);
2604 }
2605
2606 int
2607 active_wm(void)
2608 {
2609         other_wm = 0;
2610         xerrorxlib = XSetErrorHandler(xerror_start);
2611
2612         /* this causes an error if some other window manager is running */
2613         XSelectInput(display, DefaultRootWindow(display),
2614             SubstructureRedirectMask);
2615         XSync(display, False);
2616         if (other_wm)
2617                 return (1);
2618
2619         XSetErrorHandler(xerror);
2620         XSync(display, False);
2621         return (0);
2622 }
2623
2624 long
2625 getstate(Window w)
2626 {
2627         int                     format, status;
2628         long                    result = -1;
2629         unsigned char           *p = NULL;
2630         unsigned long           n, extra;
2631         Atom                    real;
2632
2633         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
2634             &real, &format, &n, &extra, (unsigned char **)&p);
2635         if (status != Success)
2636                 return (-1);
2637         if (n != 0)
2638                 result = *((long *)p);
2639         XFree(p);
2640         return (result);
2641 }
2642
2643 void
2644 new_region(struct swm_screen *s, int x, int y, int w, int h)
2645 {
2646         struct swm_region       *r, *n;
2647         struct workspace        *ws = NULL;
2648         int                     i;
2649
2650         DNPRINTF(SWM_D_MISC, "new region: screen[%d]:%dx%d+%d+%d\n",
2651              s->idx, w, h, x, y);
2652
2653         /* remove any conflicting regions */
2654         n = TAILQ_FIRST(&s->rl);
2655         while (n) {
2656                 r = n;
2657                 n = TAILQ_NEXT(r, entry);
2658                 if (X(r) < (x + w) &&
2659                     (X(r) + WIDTH(r)) > x &&
2660                     Y(r) < (y + h) &&
2661                     (Y(r) + HEIGHT(r)) > y) {
2662                         XDestroyWindow(display, r->bar_window);
2663                         TAILQ_REMOVE(&s->rl, r, entry);
2664                         TAILQ_INSERT_TAIL(&s->orl, r, entry);
2665                 }
2666         }
2667
2668         /* search old regions for one to reuse */
2669
2670         /* size + location match */
2671         TAILQ_FOREACH(r, &s->orl, entry)
2672                 if (X(r) == x && Y(r) == y &&
2673                     HEIGHT(r) == h && WIDTH(r) == w)
2674                         break;
2675
2676         /* size match */
2677         TAILQ_FOREACH(r, &s->orl, entry)
2678                 if (HEIGHT(r) == h && WIDTH(r) == w)
2679                         break;
2680
2681         if (r != NULL) {
2682                 TAILQ_REMOVE(&s->orl, r, entry);
2683                 /* try to use old region's workspace */
2684                 if (r->ws->r == NULL)
2685                         ws = r->ws;
2686         } else
2687                 if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
2688                         errx(1, "calloc: failed to allocate memory for screen");
2689
2690         /* if we don't have a workspace already, find one */
2691         if (ws == NULL) {
2692                 for (i = 0; i < SWM_WS_MAX; i++)
2693                         if (s->ws[i].r == NULL) {
2694                                 ws = &s->ws[i];
2695                                 break;
2696                         }
2697         }
2698
2699         if (ws == NULL)
2700                 errx(1, "no free workspaces\n");
2701
2702         X(r) = x;
2703         Y(r) = y;
2704         WIDTH(r) = w;
2705         HEIGHT(r) = h;
2706         r->s = s;
2707         r->ws = ws;
2708         ws->r = r;
2709         TAILQ_INSERT_TAIL(&s->rl, r, entry);
2710 }
2711
2712 void
2713 scan_xrandr(int i)
2714 {
2715 #ifdef SWM_XRR_HAS_CRTC
2716         XRRCrtcInfo             *ci;
2717         XRRScreenResources      *sr;
2718         int                     c;
2719         int                     ncrtc = 0;
2720 #endif /* SWM_XRR_HAS_CRTC */
2721         struct swm_region       *r;
2722
2723
2724         if (i >= ScreenCount(display))
2725                 errx(1, "invalid screen");
2726
2727         /* remove any old regions */
2728         while ((r = TAILQ_FIRST(&screens[i].rl)) != NULL) {
2729                 r->ws->r = NULL;
2730                 XDestroyWindow(display, r->bar_window);
2731                 TAILQ_REMOVE(&screens[i].rl, r, entry);
2732                 TAILQ_INSERT_TAIL(&screens[i].orl, r, entry);
2733         }
2734
2735         /* map virtual screens onto physical screens */
2736 #ifdef SWM_XRR_HAS_CRTC
2737         if (xrandr_support) {
2738                 sr = XRRGetScreenResources(display, screens[i].root);
2739                 if (sr == NULL)
2740                         new_region(&screens[i], 0, 0,
2741                             DisplayWidth(display, i),
2742                             DisplayHeight(display, i));
2743                 else
2744                         ncrtc = sr->ncrtc;
2745
2746                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2747                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2748                         if (ci->noutput == 0)
2749                                 continue;
2750
2751                         if (ci != NULL && ci->mode == None)
2752                                 new_region(&screens[i], 0, 0,
2753                                     DisplayWidth(display, i),
2754                                     DisplayHeight(display, i));
2755                         else
2756                                 new_region(&screens[i],
2757                                     ci->x, ci->y, ci->width, ci->height);
2758                 }
2759                 if (ci)
2760                         XRRFreeCrtcInfo(ci);
2761                 XRRFreeScreenResources(sr);
2762         } else
2763 #endif /* SWM_XRR_HAS_CRTC */
2764         {
2765                 new_region(&screens[i], 0, 0, DisplayWidth(display, i),
2766                     DisplayHeight(display, i));
2767         }
2768 }
2769
2770 void
2771 screenchange(XEvent *e) {
2772         XRRScreenChangeNotifyEvent      *xe = (XRRScreenChangeNotifyEvent *)e;
2773         struct swm_region               *r;
2774         struct ws_win                   *win;
2775         int                             i;
2776
2777         DNPRINTF(SWM_D_EVENT, "screenchange: %lu\n", xe->root);
2778
2779         if (!XRRUpdateConfiguration(e))
2780                 return;
2781
2782         /* silly event doesn't include the screen index */
2783         for (i = 0; i < ScreenCount(display); i++)
2784                 if (screens[i].root == xe->root)
2785                         break;
2786         if (i >= ScreenCount(display))
2787                 errx(1, "screenchange: screen not found\n");
2788
2789         /* brute force for now, just re-enumerate the regions */
2790         scan_xrandr(i);
2791
2792         /* hide any windows that went away */
2793         TAILQ_FOREACH(r, &screens[i].rl, entry)
2794                 TAILQ_FOREACH(win, &r->ws->winlist, entry)
2795                         XUnmapWindow(display, win->id);
2796
2797         /* add bars to all regions */
2798         for (i = 0; i < ScreenCount(display); i++)
2799                 TAILQ_FOREACH(r, &screens[i].rl, entry)
2800                         bar_setup(r);
2801         stack();
2802 }
2803
2804 void
2805 setup_screens(void)
2806 {
2807         Window                  d1, d2, *wins = NULL;
2808         XWindowAttributes       wa;
2809         unsigned int            no;
2810         int                     i, j, k;
2811         int                     errorbase, major, minor;
2812         struct workspace        *ws;
2813         int                     ws_idx_atom;
2814
2815
2816         if ((screens = calloc(ScreenCount(display),
2817              sizeof(struct swm_screen))) == NULL)
2818                 errx(1, "calloc: screens");
2819
2820         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2821
2822         /* initial Xrandr setup */
2823         xrandr_support = XRRQueryExtension(display,
2824             &xrandr_eventbase, &errorbase);
2825         if (xrandr_support)
2826                 if (XRRQueryVersion(display, &major, &minor) && major < 1)
2827                         xrandr_support = 0;
2828
2829         /* map physical screens */
2830         for (i = 0; i < ScreenCount(display); i++) {
2831                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2832                 screens[i].idx = i;
2833                 TAILQ_INIT(&screens[i].rl);
2834                 TAILQ_INIT(&screens[i].orl);
2835                 screens[i].root = RootWindow(display, i);
2836
2837                 /* set default colors */
2838                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2839                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2840                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2841                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2842                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2843
2844                 /* init all workspaces */
2845                 /* XXX these should be dynamically allocated too */
2846                 for (j = 0; j < SWM_WS_MAX; j++) {
2847                         ws = &screens[i].ws[j];
2848                         ws->idx = j;
2849                         ws->restack = 1;
2850                         ws->focus = NULL;
2851                         ws->r = NULL;
2852                         TAILQ_INIT(&ws->winlist);
2853
2854                         for (k = 0; layouts[k].l_stack != NULL; k++)
2855                                 if (layouts[k].l_config != NULL)
2856                                         layouts[k].l_config(ws,
2857                                             SWM_ARG_ID_STACKINIT);
2858                         ws->cur_layout = &layouts[0];
2859                 }
2860                 /* grab existing windows (before we build the bars)*/
2861                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2862                         continue;
2863
2864                 scan_xrandr(i);
2865
2866                 if (xrandr_support)
2867                         XRRSelectInput(display, screens[i].root,
2868                             RRScreenChangeNotifyMask);
2869
2870                 /* attach windows to a region */
2871                 /* normal windows */
2872                 for (j = 0; j < no; j++) {
2873                         XGetWindowAttributes(display, wins[j], &wa);
2874                         if (!XGetWindowAttributes(display, wins[j], &wa) ||
2875                             wa.override_redirect ||
2876                             XGetTransientForHint(display, wins[j], &d1))
2877                                 continue;
2878
2879                         if (wa.map_state == IsViewable ||
2880                             getstate(wins[j]) == NormalState)
2881                                 manage_window(wins[j]);
2882                 }
2883                 /* transient windows */
2884                 for (j = 0; j < no; j++) {
2885                         if (!XGetWindowAttributes(display, wins[j], &wa))
2886                                 continue;
2887
2888                         if (XGetTransientForHint(display, wins[j], &d1) &&
2889                             (wa.map_state == IsViewable || getstate(wins[j]) ==
2890                             NormalState))
2891                                 manage_window(wins[j]);
2892                 }
2893                 if (wins) {
2894                         XFree(wins);
2895                         wins = NULL;
2896                 }
2897         }
2898 }
2899
2900 int
2901 main(int argc, char *argv[])
2902 {
2903         struct passwd           *pwd;
2904         struct swm_region       *r;
2905         char                    conf[PATH_MAX], *cfile = NULL;
2906         struct stat             sb;
2907         XEvent                  e;
2908         int                     xfd, i;
2909         fd_set                  rd;
2910
2911         start_argv = argv;
2912         fprintf(stderr, "Welcome to scrotwm V%s cvs tag: %s\n",
2913             SWM_VERSION, cvstag);
2914         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2915                 warnx("no locale support");
2916
2917         if (!(display = XOpenDisplay(0)))
2918                 errx(1, "can not open display");
2919
2920         if (active_wm())
2921                 errx(1, "other wm running");
2922
2923         astate = XInternAtom(display, "WM_STATE", False);
2924         aprot = XInternAtom(display, "WM_PROTOCOLS", False);
2925         adelete = XInternAtom(display, "WM_DELETE_WINDOW", False);
2926
2927         /* look for local and global conf file */
2928         pwd = getpwuid(getuid());
2929         if (pwd == NULL)
2930                 errx(1, "invalid user %d", getuid());
2931
2932         setup_screens();
2933
2934         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2935         if (stat(conf, &sb) != -1) {
2936                 if (S_ISREG(sb.st_mode))
2937                         cfile = conf;
2938         } else {
2939                 /* try global conf file */
2940                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2941                 if (!stat(conf, &sb))
2942                         if (S_ISREG(sb.st_mode))
2943                                 cfile = conf;
2944         }
2945         if (cfile)
2946                 conf_load(cfile);
2947
2948         /* setup all bars */
2949         for (i = 0; i < ScreenCount(display); i++)
2950                 TAILQ_FOREACH(r, &screens[i].rl, entry)
2951                         bar_setup(r);
2952
2953         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2954
2955         grabkeys();
2956         stack();
2957
2958         xfd = ConnectionNumber(display);
2959         while (running) {
2960                 FD_ZERO(&rd);
2961                 FD_SET(xfd, &rd);
2962                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2963                         if (errno != EINTR)
2964                                 errx(1, "select failed");
2965                 if (bar_alarm) {
2966                         bar_alarm = 0;
2967                         bar_update();
2968                 }
2969                 while (XPending(display)) {
2970                         XNextEvent(display, &e);
2971                         if (e.type < LASTEvent) {
2972                                 if (handler[e.type])
2973                                         handler[e.type](&e);
2974                                 else
2975                                         DNPRINTF(SWM_D_EVENT,
2976                                             "win: %lu unknown event: %d\n",
2977                                             e.xany.window, e.type);
2978                         } else {
2979                                 switch (e.type - xrandr_eventbase) {
2980                                 case RRScreenChangeNotify:
2981                                         screenchange(&e);
2982                                         break;
2983                                 default:
2984                                         DNPRINTF(SWM_D_EVENT,
2985                                             "win: %lu unknown xrandr event: "
2986                                             "%d\n", e.xany.window, e.type);
2987                                         break;
2988                                 }
2989                         }
2990                 }
2991         }
2992
2993         XCloseDisplay(display);
2994
2995         return (0);
2996 }