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     "0.9.1"
  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 int                     clock_enabled = 1;
 177 pid_t                   bar_pid;
 178 GC                      bar_gc;
 179 XGCValues               bar_gcv;
 180 int                     bar_fidx = 0;
 181 XFontStruct             *bar_fs;
 182 char                    *bar_fonts[] = {
 183                             "-*-terminus-medium-*-*-*-*-*-*-*-*-*-*-*",
 184                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 185                             NULL
 186 };
 187
 188 /* terminal + args */
 189 char                    *spawn_term[] = { "xterm", NULL };
 190 char                    *spawn_screenshot[] = { "screenshot.sh", NULL, NULL };
 191 char                    *spawn_lock[] = { "xlock", NULL };
 192 char                    *spawn_initscr[] = { "initscreen.sh", NULL };
 193 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL, "-nb", NULL,
 194                             "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 195
 196 #define SWM_MENU_FN     (2)
 197 #define SWM_MENU_NB     (4)
 198 #define SWM_MENU_NF     (6)
 199 #define SWM_MENU_SB     (8)
 200 #define SWM_MENU_SF     (10)
 201
 202 /* layout manager data */
 203 struct swm_geometry {
 204         int                     x;
 205         int                     y;
 206         int                     w;
 207         int                     h;
 208 };
 209
 210 struct swm_screen;
 211 struct workspace;
 212
 213 /* virtual "screens" */
 214 struct swm_region {
 215         TAILQ_ENTRY(swm_region) entry;
 216         struct swm_geometry     g;
 217         struct workspace        *ws;    /* current workspace on this region */
 218         struct swm_screen       *s;     /* screen idx */
 219         Window                  bar_window;
 220 };
 221 TAILQ_HEAD(swm_region_list, swm_region);
 222
 223 struct ws_win {
 224         TAILQ_ENTRY(ws_win)     entry;
 225         Window                  id;
 226         struct swm_geometry     g;
 227         int                     got_focus;
 228         int                     floating;
 229         int                     transient;
 230         int                     manual;
 231         int                     font_size_boundary[SWM_MAX_FONT_STEPS];
 232         int                     font_steps;
 233         int                     last_inc;
 234         int                     can_delete;
 235         unsigned long           quirks;
 236         struct workspace        *ws;    /* always valid */
 237         struct swm_screen       *s;     /* always valid, never changes */
 238         XWindowAttributes       wa;
 239         XSizeHints              sh;
 240         XClassHint              ch;
 241 };
 242 TAILQ_HEAD(ws_win_list, ws_win);
 243
 244 /* layout handlers */
 245 void    stack(void);
 246 void    vertical_config(struct workspace *, int);
 247 void    vertical_stack(struct workspace *, struct swm_geometry *);
 248 void    horizontal_config(struct workspace *, int);
 249 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 250 void    max_stack(struct workspace *, struct swm_geometry *);
 251
 252 void    grabbuttons(struct ws_win *, int);
 253 void    new_region(struct swm_screen *, int, int, int, int);
 254 void    update_modkey(unsigned int);
 255
 256 struct layout {
 257         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 258         void            (*l_config)(struct workspace *, int);
 259 } layouts[] =  {
 260         /* stack,               configure */
 261         { vertical_stack,       vertical_config},
 262         { horizontal_stack,     horizontal_config},
 263         { max_stack,            NULL},
 264         { NULL,                 NULL},
 265 };
 266
 267 #define SWM_H_SLICE             (32)
 268 #define SWM_V_SLICE             (32)
 269
 270 /* define work spaces */
 271 struct workspace {
 272         int                     idx;            /* workspace index */
 273         int                     restack;        /* restack on switch */
 274         struct layout           *cur_layout;    /* current layout handlers */
 275         struct ws_win           *focus;         /* may be NULL */
 276         struct ws_win           *focus_prev;    /* may be NULL */
 277         struct swm_region       *r;             /* may be NULL */
 278         struct ws_win_list      winlist;        /* list of windows in ws */
 279
 280         /* stacker state */
 281         struct {
 282                                 int horizontal_msize;
 283                                 int horizontal_mwin;
 284                                 int horizontal_stacks;
 285                                 int vertical_msize;
 286                                 int vertical_mwin;
 287                                 int vertical_stacks;
 288         } l_state;
 289 };
 290
 291 enum    { SWM_S_COLOR_BAR, SWM_S_COLOR_BAR_BORDER, SWM_S_COLOR_BAR_FONT,
 292           SWM_S_COLOR_FOCUS, SWM_S_COLOR_UNFOCUS, SWM_S_COLOR_MAX };
 293
 294 /* physical screen mapping */
 295 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 296 struct swm_screen {
 297         int                     idx;            /* screen index */
 298         struct swm_region_list  rl;     /* list of regions on this screen */
 299         struct swm_region_list  orl;    /* list of old regions */
 300         Window                  root;
 301         struct workspace        ws[SWM_WS_MAX];
 302
 303         /* colors */
 304         struct {
 305                 unsigned long   color;
 306                 char            *name;
 307         } c[SWM_S_COLOR_MAX];
 308 };
 309 struct swm_screen       *screens;
 310 int                     num_screens;
 311
 312 struct ws_win           *cur_focus = NULL;
 313
 314 /* args to functions */
 315 union arg {
 316         int                     id;
 317 #define SWM_ARG_ID_FOCUSNEXT    (0)
 318 #define SWM_ARG_ID_FOCUSPREV    (1)
 319 #define SWM_ARG_ID_FOCUSMAIN    (2)
 320 #define SWM_ARG_ID_SWAPNEXT     (3)
 321 #define SWM_ARG_ID_SWAPPREV     (4)
 322 #define SWM_ARG_ID_SWAPMAIN     (5)
 323 #define SWM_ARG_ID_MASTERSHRINK (6)
 324 #define SWM_ARG_ID_MASTERGROW   (7)
 325 #define SWM_ARG_ID_MASTERADD    (8)
 326 #define SWM_ARG_ID_MASTERDEL    (9)
 327 #define SWM_ARG_ID_STACKRESET   (10)
 328 #define SWM_ARG_ID_STACKINIT    (11)
 329 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 330 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 331 #define SWM_ARG_ID_CYCLESC_UP   (14)
 332 #define SWM_ARG_ID_CYCLESC_DOWN (15)
 333 #define SWM_ARG_ID_STACKINC     (16)
 334 #define SWM_ARG_ID_STACKDEC     (17)
 335 #define SWM_ARG_ID_SS_ALL       (0)
 336 #define SWM_ARG_ID_SS_WINDOW    (1)
 337 #define SWM_ARG_ID_DONTCENTER   (0)
 338 #define SWM_ARG_ID_CENTER       (1)
 339 #define SWM_ARG_ID_KILLWINDOW   (0)
 340 #define SWM_ARG_ID_DELETEWINDOW (1)
 341         char                    **argv;
 342 };
 343
 344 /* quirks */
 345 struct quirk {
 346         char                    *class;
 347         char                    *name;
 348         unsigned long           quirk;
 349 #define SWM_Q_FLOAT             (1<<0)  /* float this window */
 350 #define SWM_Q_TRANSSZ           (1<<1)  /* transiend window size too small */
 351 #define SWM_Q_ANYWHERE          (1<<2)  /* don't position this window */
 352 #define SWM_Q_XTERM_FONTADJ     (1<<3)  /* adjust xterm fonts when resizing */
 353 #define SWM_Q_FULLSCREEN        (1<<4)  /* remove border */
 354 } quirks[] = {
 355         { "MPlayer",            "xv",           SWM_Q_FLOAT | SWM_Q_FULLSCREEN },
 356         { "OpenOffice.org 2.4", "VCLSalFrame",  SWM_Q_FLOAT },
 357         { "OpenOffice.org 3.0", "VCLSalFrame",  SWM_Q_FLOAT },
 358         { "Firefox-bin",        "firefox-bin",  SWM_Q_TRANSSZ },
 359         { "Firefox",            "Dialog",       SWM_Q_FLOAT },
 360         { "Gimp",               "gimp",         SWM_Q_FLOAT | SWM_Q_ANYWHERE },
 361         { "XTerm",              "xterm",        SWM_Q_XTERM_FONTADJ },
 362         { "xine",               "Xine Window",  SWM_Q_FLOAT | SWM_Q_ANYWHERE },
 363         { "Xitk",               "Xitk Combo",   SWM_Q_FLOAT | SWM_Q_ANYWHERE },
 364         { "xine",               "xine Panel",   SWM_Q_FLOAT | SWM_Q_ANYWHERE },
 365         { "Xitk",               "Xine Window",  SWM_Q_FLOAT | SWM_Q_ANYWHERE },
 366         { "xine",               "xine Video Fullscreen Window", SWM_Q_FULLSCREEN | SWM_Q_FLOAT },
 367         { "pcb",                "pcb",          SWM_Q_FLOAT },
 368         { NULL,                 NULL,           0},
 369 };
 370
 371 /* events */
 372 void                    expose(XEvent *);
 373 void                    keypress(XEvent *);
 374 void                    buttonpress(XEvent *);
 375 void                    configurerequest(XEvent *);
 376 void                    configurenotify(XEvent *);
 377 void                    destroynotify(XEvent *);
 378 void                    enternotify(XEvent *);
 379 void                    focusin(XEvent *);
 380 void                    mappingnotify(XEvent *);
 381 void                    maprequest(XEvent *);
 382 void                    propertynotify(XEvent *);
 383 void                    unmapnotify(XEvent *);
 384 void                    visibilitynotify(XEvent *);
 385
 386 void                    (*handler[LASTEvent])(XEvent *) = {
 387                                 [Expose] = expose,
 388                                 [KeyPress] = keypress,
 389                                 [ButtonPress] = buttonpress,
 390                                 [ConfigureRequest] = configurerequest,
 391                                 [ConfigureNotify] = configurenotify,
 392                                 [DestroyNotify] = destroynotify,
 393                                 [EnterNotify] = enternotify,
 394                                 [FocusIn] = focusin,
 395                                 [MappingNotify] = mappingnotify,
 396                                 [MapRequest] = maprequest,
 397                                 [PropertyNotify] = propertynotify,
 398                                 [UnmapNotify] = unmapnotify,
 399                                 [VisibilityNotify] = visibilitynotify,
 400 };
 401
 402 unsigned long
 403 name_to_color(char *colorname)
 404 {
 405         Colormap                cmap;
 406         Status                  status;
 407         XColor                  screen_def, exact_def;
 408         unsigned long           result = 0;
 409         char                    cname[32] = "#";
 410
 411         cmap = DefaultColormap(display, screens[0].idx);
 412         status = XAllocNamedColor(display, cmap, colorname,
 413             &screen_def, &exact_def);
 414         if (!status) {
 415                 strlcat(cname, colorname + 2, sizeof cname - 1);
 416                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 417                     &exact_def);
 418         }
 419         if (status)
 420                 result = screen_def.pixel;
 421         else
 422                 fprintf(stderr, "color '%s' not found.\n", colorname);
 423
 424         return (result);
 425 }
 426
 427 void
 428 setscreencolor(char *val, int i, int c)
 429 {
 430         if (i > 0 && i <= ScreenCount(display)) {
 431                 screens[i - 1].c[c].color = name_to_color(val);
 432                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 433                         errx(1, "strdup");
 434         } else if (i == -1) {
 435                 for (i = 0; i < ScreenCount(display); i++)
 436                         screens[i].c[c].color = name_to_color(val);
 437                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 438                                 errx(1, "strdup");
 439         } else
 440                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 441                     i, ScreenCount(display));
 442 }
 443
 444 void
 445 custom_region(char *val)
 446 {
 447         unsigned int                    sidx, x, y, w, h;
 448
 449         if (sscanf(val, "screen[%u]:%ux%u+%u+%u", &sidx, &w, &h, &x, &y) != 5)
 450                 errx(1, "invalid custom region, "
 451                     "should be 'screen[<n>]:<n>x<n>+<n>+<n>\n");
 452         if (sidx < 1 || sidx > ScreenCount(display))
 453                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 454                     sidx, ScreenCount(display));
 455         sidx--;
 456
 457         if (w < 1 || h < 1)
 458                 errx(1, "region %ux%u+%u+%u too small\n", w, h, x, y);
 459
 460         if (x  < 0 || x > DisplayWidth(display, sidx) ||
 461             y < 0 || y > DisplayHeight(display, sidx) ||
 462             w + x > DisplayWidth(display, sidx) ||
 463             h + y > DisplayHeight(display, sidx))
 464                 errx(1, "region %ux%u+%u+%u not within screen boundaries "
 465                     "(%ux%u)\n", w, h, x, y,
 466                     DisplayWidth(display, sidx), DisplayHeight(display, sidx));
 467
 468         new_region(&screens[sidx], x, y, w, h);
 469 }
 470
 471 int
 472 varmatch(char *var, char *name, int *index)
 473 {
 474         char                    *p, buf[5];
 475         int                     i;
 476
 477         i = strncmp(var, name, 255);
 478         if (index == NULL)
 479                 return (i);
 480
 481         *index = -1;
 482         if (i <= 0)
 483                 return (i);
 484         p = var + strlen(name);
 485         if (*p++ != '[')
 486                 return (i);
 487         bzero(buf, sizeof buf);
 488         i = 0;
 489         while (isdigit(*p) && i < sizeof buf)
 490                 buf[i++] = *p++;
 491         if (i == 0 || i >= sizeof buf || *p != ']')
 492                 return (1);
 493         *index = strtonum(buf, 0, 99, NULL);
 494         return (0);
 495 }
 496
 497 /* conf file stuff */
 498 #define SWM_CONF_WS     "\n= \t"
 499 #define SWM_CONF_FILE   "scrotwm.conf"
 500 int
 501 conf_load(char *filename)
 502 {
 503         FILE                    *config;
 504         char                    *line, *cp, *var, *val;
 505         size_t                  len, lineno = 0;
 506         int                     i, sc;
 507         unsigned int            modkey;
 508
 509         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 510
 511         if (filename == NULL)
 512                 return (1);
 513
 514         if ((config = fopen(filename, "r")) == NULL)
 515                 return (1);
 516
 517         for (sc = ScreenCount(display);;) {
 518                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 519                         if (feof(config))
 520                                 break;
 521                 cp = line;
 522                 cp += (long)strspn(cp, SWM_CONF_WS);
 523                 if (cp[0] == '\0') {
 524                         /* empty line */
 525                         free(line);
 526                         continue;
 527                 }
 528                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 529                         break;
 530                 cp += (long)strspn(cp, SWM_CONF_WS);
 531                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 532                         break;
 533
 534                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 535                 switch (var[0]) {
 536                 case 'b':
 537                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 538                                 bar_enabled = atoi(val);
 539                         else if (!varmatch(var, "bar_border", &i))
 540                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 541                         else if (!varmatch(var, "bar_color", &i))
 542                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 543                         else if (!varmatch(var, "bar_font_color", &i))
 544                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 545                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 546                                 asprintf(&bar_fonts[0], "%s", val);
 547                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 548                                 asprintf(&bar_argv[0], "%s", val);
 549                         else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 550                                 bar_delay = atoi(val);
 551                         else
 552                                 goto bad;
 553                         break;
 554
 555                 case 'c':
 556                         if (!strncmp(var, "clock_enabled", strlen("clock_enabled")))
 557                                 clock_enabled = atoi(val);
 558                         else if (!varmatch(var, "color_focus", &i))
 559                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 560                         else if (!varmatch(var, "color_unfocus", &i))
 561                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 562                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 563                                 cycle_visible = atoi(val);
 564                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 565                                 cycle_visible = atoi(val);
 566                         else
 567                                 goto bad;
 568                         break;
 569
 570                 case 'd':
 571                         if (!strncmp(var, "dialog_ratio",
 572                             strlen("dialog_ratio"))) {
 573                                 dialog_ratio = atof(val);
 574                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 575                                         dialog_ratio = .6;
 576                         } else
 577                                 goto bad;
 578                         break;
 579
 580                 case 'm':
 581                         if (!strncmp(var, "modkey", strlen("modkey"))) {
 582                                 modkey = MODKEY;
 583                                 if (!strncmp(val, "Mod2", strlen("Mod2")))
 584                                         modkey = Mod2Mask;
 585                                 else if (!strncmp(val, "Mod3", strlen("Mod3")))
 586                                         modkey = Mod3Mask;
 587                                 else if (!strncmp(val, "Mod4", strlen("Mod4")))
 588                                         modkey = Mod4Mask;
 589                                 else
 590                                         modkey = Mod1Mask;
 591                                 update_modkey(modkey);
 592                         } else
 593                                 goto bad;
 594                         break;
 595
 596                 case 'r':
 597                         if (!strncmp(var, "region", strlen("region")))
 598                                 custom_region(val);
 599                         else
 600                                 goto bad;
 601                         break;
 602
 603                 case 's':
 604                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 605                                 asprintf(&spawn_term[0], "%s", val);
 606                         else if (!strncmp(var, "screenshot_enabled",
 607                             strlen("screenshot_enabled")))
 608                                 ss_enabled = atoi(val);
 609                         else if (!strncmp(var, "screenshot_app",
 610                             strlen("screenshot_app")))
 611                                 asprintf(&spawn_screenshot[0], "%s", val);
 612                         else
 613                                 goto bad;
 614                         break;
 615
 616                 case 't':
 617                         if (!strncmp(var, "term_width", strlen("term_width")))
 618                                 term_width = atoi(val);
 619                         else
 620                                 goto bad;
 621                         break;
 622
 623                 default:
 624                         goto bad;
 625                 }
 626                 free(line);
 627         }
 628
 629         fclose(config);
 630         return (0);
 631
 632 bad:
 633         errx(1, "invalid conf file entry: %s=%s", var, val);
 634 }
 635
 636 void
 637 socket_setnonblock(int fd)
 638 {
 639         int                     flags;
 640
 641         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 642                 err(1, "fcntl F_GETFL");
 643         flags |= O_NONBLOCK;
 644         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 645                 err(1, "fcntl F_SETFL");
 646 }
 647
 648 void
 649 bar_print(struct swm_region *r, char *s)
 650 {
 651         XClearWindow(display, r->bar_window);
 652         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 653         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 654             strlen(s));
 655 }
 656
 657 void
 658 bar_extra_stop(void)
 659 {
 660         if (bar_pipe[0]) {
 661                 close(bar_pipe[0]);
 662                 bzero(bar_pipe, sizeof bar_pipe);
 663         }
 664         if (bar_pid) {
 665                 kill(bar_pid, SIGTERM);
 666                 bar_pid = 0;
 667         }
 668         strlcpy(bar_ext, "", sizeof bar_ext);
 669         bar_extra = 0;
 670 }
 671
 672 void
 673 bar_update(void)
 674 {
 675         time_t                  tmt;
 676         struct tm               tm;
 677         struct swm_region       *r;
 678         int                     i, x;
 679         size_t                  len;
 680         char                    s[SWM_BAR_MAX];
 681         char                    loc[SWM_BAR_MAX];
 682         char                    *b;
 683
 684         if (bar_enabled == 0)
 685                 return;
 686         if (bar_extra && bar_extra_running) {
 687                 /* ignore short reads; it'll correct itself */
 688                 while ((b = fgetln(stdin, &len)) != NULL)
 689                         if (b && b[len - 1] == '\n') {
 690                                 b[len - 1] = '\0';
 691                                 strlcpy(bar_ext, b, sizeof bar_ext);
 692                         }
 693                 if (b == NULL && errno != EAGAIN) {
 694                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 695                             errno, strerror(errno));
 696                         bar_extra_stop();
 697                 }
 698         } else
 699                 strlcpy(bar_ext, "", sizeof bar_ext);
 700
 701         if (clock_enabled == 0)
 702                 strlcpy(s, "", sizeof s);
 703         else {
 704                 time(&tmt);
 705                 localtime_r(&tmt, &tm);
 706                 strftime(s, sizeof s, "%a %b %d %R %Z %Y    ", &tm);
 707         }
 708         for (i = 0; i < ScreenCount(display); i++) {
 709                 x = 1;
 710                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 711                         snprintf(loc, sizeof loc, "%d:%d    %s%s    %s",
 712                             x++, r->ws->idx + 1, s, bar_ext, bar_vertext);
 713                         bar_print(r, loc);
 714                 }
 715         }
 716         XSync(display, False);
 717         alarm(bar_delay);
 718 }
 719
 720 void
 721 bar_signal(int sig)
 722 {
 723         bar_alarm = 1;
 724 }
 725
 726 void
 727 bar_toggle(struct swm_region *r, union arg *args)
 728 {
 729         struct swm_region       *tmpr;
 730         int                     i, j, sc = ScreenCount(display);
 731
 732         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 733
 734         if (bar_enabled)
 735                 for (i = 0; i < sc; i++)
 736                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 737                                 XUnmapWindow(display, tmpr->bar_window);
 738         else
 739                 for (i = 0; i < sc; i++)
 740                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 741                                 XMapRaised(display, tmpr->bar_window);
 742
 743         bar_enabled = !bar_enabled;
 744         for (i = 0; i < sc; i++)
 745                 for (j = 0; j < SWM_WS_MAX; j++)
 746                         screens[i].ws[j].restack = 1;
 747
 748         stack();
 749         /* must be after stack */
 750         bar_update();
 751 }
 752
 753 void
 754 bar_refresh(void)
 755 {
 756         XSetWindowAttributes    wa;
 757         struct swm_region       *r;
 758         int                     i;
 759
 760         /* do this here because the conf file is in memory */
 761         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 762                 /* launch external status app */
 763                 bar_extra_running = 1;
 764                 if (pipe(bar_pipe) == -1)
 765                         err(1, "pipe error");
 766                 socket_setnonblock(bar_pipe[0]);
 767                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 768                 if (dup2(bar_pipe[0], 0) == -1)
 769                         errx(1, "dup2");
 770                 if (dup2(bar_pipe[1], 1) == -1)
 771                         errx(1, "dup2");
 772                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 773                         err(1, "could not disable SIGPIPE");
 774                 switch (bar_pid = fork()) {
 775                 case -1:
 776                         err(1, "cannot fork");
 777                         break;
 778                 case 0: /* child */
 779                         close(bar_pipe[0]);
 780                         execvp(bar_argv[0], bar_argv);
 781                         err(1, "%s external app failed", bar_argv[0]);
 782                         break;
 783                 default: /* parent */
 784                         close(bar_pipe[1]);
 785                         break;
 786                 }
 787         }
 788
 789         bzero(&wa, sizeof wa);
 790         for (i = 0; i < ScreenCount(display); i++)
 791                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 792                         wa.border_pixel =
 793                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 794                         wa.background_pixel =
 795                             screens[i].c[SWM_S_COLOR_BAR].color;
 796                         XChangeWindowAttributes(display, r->bar_window,
 797                             CWBackPixel | CWBorderPixel, &wa);
 798                 }
 799         bar_update();
 800 }
 801
 802 void
 803 bar_setup(struct swm_region *r)
 804 {
 805         int                     i;
 806
 807         for (i = 0; bar_fonts[i] != NULL; i++) {
 808                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 809                 if (bar_fs) {
 810                         bar_fidx = i;
 811                         break;
 812                 }
 813         }
 814         if (bar_fonts[i] == NULL)
 815                         errx(1, "couldn't load font");
 816         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 817
 818         r->bar_window = XCreateSimpleWindow(display,
 819             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 820             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 821             r->s->c[SWM_S_COLOR_BAR].color);
 822         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 823         XSetFont(display, bar_gc, bar_fs->fid);
 824         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 825         if (bar_enabled)
 826                 XMapRaised(display, r->bar_window);
 827         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 828
 829         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 830                 err(1, "could not install bar_signal");
 831         bar_refresh();
 832 }
 833
 834 void
 835 version(struct swm_region *r, union arg *args)
 836 {
 837         bar_version = !bar_version;
 838         if (bar_version)
 839                 strlcpy(bar_vertext, cvstag, sizeof bar_vertext);
 840         else
 841                 strlcpy(bar_vertext, "", sizeof bar_vertext);
 842         bar_update();
 843 }
 844
 845 void
 846 client_msg(struct ws_win *win, Atom a)
 847 {
 848         XClientMessageEvent     cm;
 849
 850         bzero(&cm, sizeof cm);
 851         cm.type = ClientMessage;
 852         cm.window = win->id;
 853         cm.message_type = aprot;
 854         cm.format = 32;
 855         cm.data.l[0] = a;
 856         cm.data.l[1] = CurrentTime;
 857         XSendEvent(display, win->id, False, 0L, (XEvent *)&cm);
 858 }
 859
 860 void
 861 config_win(struct ws_win *win)
 862 {
 863         XConfigureEvent         ce;
 864
 865         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 866             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 867         ce.type = ConfigureNotify;
 868         ce.display = display;
 869         ce.event = win->id;
 870         ce.window = win->id;
 871         ce.x = win->g.x;
 872         ce.y = win->g.y;
 873         ce.width = win->g.w;
 874         ce.height = win->g.h;
 875         ce.border_width = 1; /* XXX store this! */
 876         ce.above = None;
 877         ce.override_redirect = False;
 878         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 879 }
 880
 881 int
 882 count_win(struct workspace *ws, int count_transient)
 883 {
 884         struct ws_win           *win;
 885         int                     count = 0;
 886
 887         TAILQ_FOREACH(win, &ws->winlist, entry) {
 888                 if (count_transient == 0 && win->floating)
 889                         continue;
 890                 if (count_transient == 0 && win->transient)
 891                         continue;
 892                 count++;
 893         }
 894         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 895
 896         return (count);
 897 }
 898
 899 void
 900 quit(struct swm_region *r, union arg *args)
 901 {
 902         DNPRINTF(SWM_D_MISC, "quit\n");
 903         running = 0;
 904 }
 905
 906 void
 907 unmap_all(void)
 908 {
 909         struct ws_win           *win;
 910         int                     i, j;
 911
 912         for (i = 0; i < ScreenCount(display); i++)
 913                 for (j = 0; j < SWM_WS_MAX; j++)
 914                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 915                                 XUnmapWindow(display, win->id);
 916 }
 917
 918 void
 919 fake_keypress(struct ws_win *win, int keysym, int modifiers)
 920 {
 921         XKeyEvent event;
 922
 923         event.display = display;        /* Ignored, but what the hell */
 924         event.window = win->id;
 925         event.root = win->s->root;
 926         event.subwindow = None;
 927         event.time = CurrentTime;
 928         event.x = win->g.x;
 929         event.y = win->g.y;
 930         event.x_root = 1;
 931         event.y_root = 1;
 932         event.same_screen = True;
 933         event.keycode = XKeysymToKeycode(display, keysym);
 934         event.state = modifiers;
 935
 936         event.type = KeyPress;
 937         XSendEvent(event.display, event.window, True,
 938             KeyPressMask, (XEvent *)&event);
 939
 940         event.type = KeyRelease;
 941         XSendEvent(event.display, event.window, True,
 942             KeyPressMask, (XEvent *)&event);
 943
 944 }
 945
 946 void
 947 restart(struct swm_region *r, union arg *args)
 948 {
 949         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 950
 951         /* disable alarm because the following code may not be interrupted */
 952         alarm(0);
 953         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 954                 errx(1, "can't disable alarm");
 955
 956         bar_extra_stop();
 957         bar_extra = 1;
 958         unmap_all();
 959         XCloseDisplay(display);
 960         execvp(start_argv[0], start_argv);
 961         fprintf(stderr, "execvp failed\n");
 962         perror(" failed");
 963         quit(NULL, NULL);
 964 }
 965
 966 struct swm_region *
 967 root_to_region(Window root)
 968 {
 969         struct swm_region       *r = NULL;
 970         Window                  rr, cr;
 971         int                     i, x, y, wx, wy;
 972         unsigned int            mask;
 973
 974         for (i = 0; i < ScreenCount(display); i++)
 975                 if (screens[i].root == root)
 976                         break;
 977
 978         if (XQueryPointer(display, screens[i].root,
 979             &rr, &cr, &x, &y, &wx, &wy, &mask) != False) {
 980                 /* choose a region based on pointer location */
 981                 TAILQ_FOREACH(r, &screens[i].rl, entry)
 982                         if (x >= X(r) && x <= X(r) + WIDTH(r) &&
 983                             y >= Y(r) && y <= Y(r) + HEIGHT(r))
 984                                 break;
 985         }
 986
 987         if (r == NULL)
 988                 r = TAILQ_FIRST(&screens[i].rl);
 989
 990         return (r);
 991 }
 992
 993 struct ws_win *
 994 find_window(Window id)
 995 {
 996         struct ws_win           *win;
 997         int                     i, j;
 998
 999         for (i = 0; i < ScreenCount(display); i++)
1000                 for (j = 0; j < SWM_WS_MAX; j++)
1001                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
1002                                 if (id == win->id)
1003                                         return (win);
1004         return (NULL);
1005 }
1006
1007 void
1008 spawn(struct swm_region *r, union arg *args)
1009 {
1010         char                    *ret;
1011         int                     si;
1012
1013         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
1014         /*
1015          * The double-fork construct avoids zombie processes and keeps the code
1016          * clean from stupid signal handlers.
1017          */
1018         if (fork() == 0) {
1019                 if (fork() == 0) {
1020                         if (display)
1021                                 close(ConnectionNumber(display));
1022                         setenv("LD_PRELOAD", SWM_LIB, 1);
1023                         if (asprintf(&ret, "%d", r->ws->idx)) {
1024                                 setenv("_SWM_WS", ret, 1);
1025                                 free(ret);
1026                         }
1027                         if (asprintf(&ret, "%d", getpid())) {
1028                                 setenv("_SWM_PID", ret, 1);
1029                                 free(ret);
1030                         }
1031                         setsid();
1032                         /* kill stdin, mplayer, ssh-add etc. need that */
1033                         si = open("/dev/null", O_RDONLY, 0);
1034                         if (si == -1)
1035                                 err(1, "open /dev/null");
1036                         if (dup2(si, 0) == -1)
1037                                 err(1, "dup2 /dev/null");
1038                         execvp(args->argv[0], args->argv);
1039                         fprintf(stderr, "execvp failed\n");
1040                         perror(" failed");
1041                 }
1042                 exit(0);
1043         }
1044         wait(0);
1045 }
1046
1047 void
1048 spawnterm(struct swm_region *r, union arg *args)
1049 {
1050         DNPRINTF(SWM_D_MISC, "spawnterm\n");
1051
1052         if (term_width)
1053                 setenv("_SWM_XTERM_FONTADJ", "", 1);
1054         spawn(r, args);
1055 }
1056
1057 void
1058 spawnmenu(struct swm_region *r, union arg *args)
1059 {
1060         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
1061
1062         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
1063         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
1064         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
1065         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
1066         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
1067
1068         spawn(r, args);
1069 }
1070
1071 void
1072 unfocus_all(void)
1073 {
1074         struct ws_win           *win;
1075         int                     i, j;
1076
1077         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
1078
1079         for (i = 0; i < ScreenCount(display); i++)
1080                 for (j = 0; j < SWM_WS_MAX; j++)
1081                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
1082                                 if (win->ws->r == NULL)
1083                                         continue;
1084                                 grabbuttons(win, 0);
1085                                 XSetWindowBorder(display, win->id,
1086                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
1087                                 win->got_focus = 0;
1088                                 win->ws->focus = NULL;
1089                                 cur_focus = NULL;
1090                         }
1091 }
1092
1093 void
1094 focus_win(struct ws_win *win)
1095 {
1096         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
1097
1098         if (win == NULL)
1099                 return;
1100
1101         if (win->ws->focus != win && win->ws->focus != NULL)
1102                 win->ws->focus_prev = win->ws->focus;
1103
1104         unfocus_all();
1105         win->ws->focus = win;
1106         if (win->ws->r != NULL) {
1107                 cur_focus = win;
1108                 if (!win->got_focus) {
1109                         XSetWindowBorder(display, win->id,
1110                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
1111                         grabbuttons(win, 1);
1112                 }
1113                 win->got_focus = 1;
1114                 XSetInputFocus(display, win->id,
1115                     RevertToPointerRoot, CurrentTime);
1116         }
1117 }
1118
1119 void
1120 switchws(struct swm_region *r, union arg *args)
1121 {
1122         int                     wsid = args->id;
1123         struct swm_region       *this_r, *other_r;
1124         struct ws_win           *win;
1125         struct workspace        *new_ws, *old_ws;
1126
1127         this_r = r;
1128         old_ws = this_r->ws;
1129         new_ws = &this_r->s->ws[wsid];
1130
1131         DNPRINTF(SWM_D_WS, "switchws screen[%d]:%dx%d+%d+%d: "
1132             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
1133             old_ws->idx, wsid);
1134
1135         if (new_ws == old_ws)
1136                 return;
1137
1138         other_r = new_ws->r;
1139         if (!other_r) {
1140                 /* if the other workspace is hidden, switch windows */
1141                 /* map new window first to prevent ugly blinking */
1142                 old_ws->r = NULL;
1143                 old_ws->restack = 1;
1144
1145                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
1146                         XMapRaised(display, win->id);
1147
1148                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
1149                         XUnmapWindow(display, win->id);
1150         } else {
1151                 other_r->ws = old_ws;
1152                 old_ws->r = other_r;
1153         }
1154         this_r->ws = new_ws;
1155         new_ws->r = this_r;
1156
1157         ignore_enter = 1;
1158         /* set focus */
1159         if (new_ws->focus)
1160                 focus_win(new_ws->focus);
1161         stack();
1162         bar_update();
1163 }
1164
1165 void
1166 cyclews(struct swm_region *r, union arg *args)
1167 {
1168         union                   arg a;
1169         struct swm_screen       *s = r->s;
1170
1171         DNPRINTF(SWM_D_WS, "cyclews id %d "
1172             "in screen[%d]:%dx%d+%d+%d ws %d\n", args->id,
1173             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1174
1175         a.id = r->ws->idx;
1176         do {
1177                 switch (args->id) {
1178                 case SWM_ARG_ID_CYCLEWS_UP:
1179                         if (a.id < SWM_WS_MAX - 1)
1180                                 a.id++;
1181                         else
1182                                 a.id = 0;
1183                         break;
1184                 case SWM_ARG_ID_CYCLEWS_DOWN:
1185                         if (a.id > 0)
1186                                 a.id--;
1187                         else
1188                                 a.id = SWM_WS_MAX - 1;
1189                         break;
1190                 default:
1191                         return;
1192                 };
1193
1194                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
1195                         continue;
1196                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
1197                         continue;
1198
1199                 switchws(r, &a);
1200         } while (a.id != r->ws->idx);
1201 }
1202
1203 void
1204 cyclescr(struct swm_region *r, union arg *args)
1205 {
1206         struct swm_region       *rr;
1207         int                     i;
1208
1209         i = r->s->idx;
1210         switch (args->id) {
1211         case SWM_ARG_ID_CYCLESC_UP:
1212                 rr = TAILQ_NEXT(r, entry);
1213                 if (rr == NULL)
1214                         rr = TAILQ_FIRST(&screens[i].rl);
1215                 break;
1216         case SWM_ARG_ID_CYCLESC_DOWN:
1217                 rr = TAILQ_PREV(r, swm_region_list, entry);
1218                 if (rr == NULL)
1219                         rr = TAILQ_LAST(&screens[i].rl, swm_region_list);
1220                 break;
1221         default:
1222                 return;
1223         };
1224         unfocus_all();
1225         XSetInputFocus(display, PointerRoot, RevertToPointerRoot, CurrentTime);
1226         XWarpPointer(display, None, rr->s[i].root, 0, 0, 0, 0, rr->g.x,
1227             rr->g.y + bar_enabled ? bar_height : 0);
1228 }
1229
1230 void
1231 swapwin(struct swm_region *r, union arg *args)
1232 {
1233         struct ws_win           *target, *source;
1234         struct ws_win_list      *wl;
1235
1236
1237         DNPRINTF(SWM_D_WS, "swapwin id %d "
1238             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
1239             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1240         if (cur_focus == NULL)
1241                 return;
1242
1243         source = cur_focus;
1244         wl = &source->ws->winlist;
1245
1246         switch (args->id) {
1247         case SWM_ARG_ID_SWAPPREV:
1248                 target = TAILQ_PREV(source, ws_win_list, entry);
1249                 TAILQ_REMOVE(wl, cur_focus, entry);
1250                 if (target == NULL)
1251                         TAILQ_INSERT_TAIL(wl, source, entry);
1252                 else
1253                         TAILQ_INSERT_BEFORE(target, source, entry);
1254                 break;
1255         case SWM_ARG_ID_SWAPNEXT:
1256                 target = TAILQ_NEXT(source, entry);
1257                 TAILQ_REMOVE(wl, source, entry);
1258                 if (target == NULL)
1259                         TAILQ_INSERT_HEAD(wl, source, entry);
1260                 else
1261                         TAILQ_INSERT_AFTER(wl, target, source, entry);
1262                 break;
1263         case SWM_ARG_ID_SWAPMAIN:
1264                 target = TAILQ_FIRST(wl);
1265                 if (target == source) {
1266                         if (source->ws->focus_prev != NULL &&
1267                             source->ws->focus_prev != target)
1268
1269                                 source = source->ws->focus_prev;
1270                         else
1271                                 return;
1272                 }
1273                 source->ws->focus_prev = target;
1274                 TAILQ_REMOVE(wl, target, entry);
1275                 TAILQ_INSERT_BEFORE(source, target, entry);
1276                 TAILQ_REMOVE(wl, source, entry);
1277                 TAILQ_INSERT_HEAD(wl, source, entry);
1278                 break;
1279         default:
1280                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
1281                 return;
1282         }
1283
1284         ignore_enter = 1;
1285         stack();
1286 }
1287
1288 void
1289 focus(struct swm_region *r, union arg *args)
1290 {
1291         struct ws_win           *winfocus, *winlostfocus;
1292         struct ws_win_list      *wl;
1293
1294         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
1295         if (cur_focus == NULL)
1296                 return;
1297
1298         wl = &cur_focus->ws->winlist;
1299
1300         winlostfocus = cur_focus;
1301
1302         switch (args->id) {
1303         case SWM_ARG_ID_FOCUSPREV:
1304                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1305                 if (winfocus == NULL)
1306                         winfocus = TAILQ_LAST(wl, ws_win_list);
1307                 break;
1308
1309         case SWM_ARG_ID_FOCUSNEXT:
1310                 winfocus = TAILQ_NEXT(cur_focus, entry);
1311                 if (winfocus == NULL)
1312                         winfocus = TAILQ_FIRST(wl);
1313                 break;
1314
1315         case SWM_ARG_ID_FOCUSMAIN:
1316                 winfocus = TAILQ_FIRST(wl);
1317                 if (winfocus == cur_focus)
1318                         winfocus = cur_focus->ws->focus_prev;
1319                 if (winfocus == NULL)
1320                         return;
1321                 break;
1322
1323         default:
1324                 return;
1325         }
1326
1327         if (winfocus == winlostfocus || winfocus == NULL)
1328                 return;
1329
1330         XMapRaised(display, winfocus->id);
1331         focus_win(winfocus);
1332         XSync(display, False);
1333 }
1334
1335 void
1336 cycle_layout(struct swm_region *r, union arg *args)
1337 {
1338         struct workspace        *ws = r->ws;
1339
1340         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1341
1342         ws->cur_layout++;
1343         if (ws->cur_layout->l_stack == NULL)
1344                 ws->cur_layout = &layouts[0];
1345         ignore_enter = 1;
1346         stack();
1347 }
1348
1349 void
1350 stack_config(struct swm_region *r, union arg *args)
1351 {
1352         struct workspace        *ws = r->ws;
1353
1354         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1355             args->id, ws->idx);
1356
1357         if (ws->cur_layout->l_config != NULL)
1358                 ws->cur_layout->l_config(ws, args->id);
1359
1360         if (args->id != SWM_ARG_ID_STACKINIT);
1361                 stack();
1362 }
1363
1364 void
1365 stack(void) {
1366         struct swm_geometry     g;
1367         struct swm_region       *r;
1368         int                     i, j;
1369
1370         DNPRINTF(SWM_D_STACK, "stack\n");
1371
1372         for (i = 0; i < ScreenCount(display); i++) {
1373                 j = 0;
1374                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1375                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1376                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1377
1378                         /* start with screen geometry, adjust for bar */
1379                         g = r->g;
1380                         g.w -= 2;
1381                         g.h -= 2;
1382                         if (bar_enabled) {
1383                                 g.y += bar_height;
1384                                 g.h -= bar_height;
1385                         }
1386
1387                         r->ws->restack = 0;
1388                         r->ws->cur_layout->l_stack(r->ws, &g);
1389                 }
1390         }
1391         if (font_adjusted)
1392                 font_adjusted--;
1393         XSync(display, False);
1394 }
1395
1396 void
1397 stack_floater(struct ws_win *win, struct swm_region *r)
1398 {
1399         unsigned int            mask;
1400         XWindowChanges          wc;
1401
1402         bzero(&wc, sizeof wc);
1403         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1404         if ((win->quirks & SWM_Q_FULLSCREEN) && (win->g.w == WIDTH(r)) &&
1405             (win->g.h == HEIGHT(r)))
1406                 wc.border_width = 0;
1407         else
1408                 wc.border_width = 1;
1409         if (win->transient && (win->quirks & SWM_Q_TRANSSZ)) {
1410                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1411                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1412         }
1413         wc.width = win->g.w;
1414         wc.height = win->g.h;
1415         if (win->manual) {
1416                 wc.x = win->g.x;
1417                 wc.y = win->g.y;
1418         } else {
1419                 wc.x = (WIDTH(r) - win->g.w) / 2;
1420                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1421         }
1422
1423         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1424             win->id, wc.x, wc.y, wc.width, wc.height);
1425
1426         XConfigureWindow(display, win->id, mask, &wc);
1427 }
1428
1429 /*
1430  * Send keystrokes to terminal to decrease/increase the font size as the
1431  * window size changes.
1432  */
1433 void
1434 adjust_font(struct ws_win *win)
1435 {
1436         if (!(win->quirks & SWM_Q_XTERM_FONTADJ) ||
1437             win->floating || win->transient)
1438                 return;
1439
1440         if (win->sh.width_inc && win->last_inc != win->sh.width_inc &&
1441             win->g.w / win->sh.width_inc < term_width &&
1442             win->font_steps < SWM_MAX_FONT_STEPS) {
1443                 win->font_size_boundary[win->font_steps] =
1444                     (win->sh.width_inc * term_width) + win->sh.base_width;
1445                 win->font_steps++;
1446                 font_adjusted++;
1447                 win->last_inc = win->sh.width_inc;
1448                 fake_keypress(win, XK_KP_Subtract, ShiftMask);
1449         } else if (win->font_steps && win->last_inc != win->sh.width_inc &&
1450             win->g.w > win->font_size_boundary[win->font_steps - 1]) {
1451                 win->font_steps--;
1452                 font_adjusted++;
1453                 win->last_inc = win->sh.width_inc;
1454                 fake_keypress(win, XK_KP_Add, ShiftMask);
1455         }
1456 }
1457
1458 #define SWAPXY(g)       do {                            \
1459         int tmp;                                        \
1460         tmp = (g)->y; (g)->y = (g)->x; (g)->x = tmp;    \
1461         tmp = (g)->h; (g)->h = (g)->w; (g)->w = tmp;    \
1462 } while (0)
1463 void
1464 stack_master(struct workspace *ws, struct swm_geometry *g, int rot, int flip)
1465 {
1466         XWindowChanges          wc;
1467         struct swm_geometry     win_g, r_g = *g;
1468         struct ws_win           *win, *winfocus;
1469         int                     i, j, s, stacks;
1470         int                     w_inc = 1, h_inc, w_base = 1, h_base;
1471         int                     hrh, extra = 0, h_slice, last_h = 0;
1472         int                     split, colno, winno, mwin, msize, mscale;
1473         int                     remain, missing, v_slice;;
1474         unsigned int            mask;
1475
1476         DNPRINTF(SWM_D_STACK, "stack_master: workspace: %d\n rot=%s flip=%s",
1477             ws->idx, rot ? "yes" : "no", flip ? "yes" : "no");
1478
1479         if ((winno = count_win(ws, 0)) == 0)
1480                 return;
1481
1482         if (ws->focus == NULL)
1483                 ws->focus = TAILQ_FIRST(&ws->winlist);
1484         winfocus = cur_focus ? cur_focus : ws->focus;
1485
1486         TAILQ_FOREACH(win, &ws->winlist, entry)
1487                 if (win->transient == 0 && win->floating == 0)
1488                         break;
1489
1490         if (win == NULL)
1491                 goto notiles;
1492
1493         if (rot) {
1494                 w_inc = win->sh.width_inc;
1495                 w_base = win->sh.base_width;
1496                 mwin = ws->l_state.horizontal_mwin;
1497                 mscale = ws->l_state.horizontal_msize;
1498                 stacks = ws->l_state.horizontal_stacks;
1499                 SWAPXY(&r_g);
1500         } else {
1501                 w_inc = win->sh.height_inc;
1502                 w_base = win->sh.base_height;
1503                 mwin = ws->l_state.vertical_mwin;
1504                 mscale = ws->l_state.vertical_msize;
1505                 stacks = ws->l_state.vertical_stacks;
1506         }
1507         win_g = r_g;
1508
1509         if (stacks > winno - mwin)
1510                 stacks = winno - mwin;
1511         if (stacks < 1)
1512                 stacks = 1;
1513
1514         h_slice = r_g.h / SWM_H_SLICE;
1515         if (mwin && winno > mwin) {
1516                 v_slice = r_g.w / SWM_V_SLICE;
1517
1518                 split = mwin;
1519                 colno = split;
1520                 win_g.w = v_slice * mscale;
1521
1522                 if (w_inc > 1 && w_inc < v_slice) {
1523                         /* adjust for window's requested size increment */
1524                         remain = (win_g.w - w_base) % w_inc;
1525                         missing = w_inc - remain;
1526                         win_g.w -= remain;
1527                         extra += remain;
1528                 }
1529
1530                 msize = win_g.w;
1531                 if (flip)
1532                         win_g.x += r_g.w - msize;
1533         } else {
1534                 msize = -2;
1535                 colno = split = winno / stacks;
1536                 win_g.w = ((r_g.w - (stacks * 2) + 2) / stacks);
1537         }
1538         hrh = r_g.h / colno;
1539         extra = r_g.h - (colno * hrh);
1540         win_g.h = hrh - 2;
1541
1542         /*  stack all the tiled windows */
1543         i = j = 0, s = stacks;
1544         TAILQ_FOREACH(win, &ws->winlist, entry) {
1545                 if (win->transient != 0 || win->floating != 0)
1546                         continue;
1547
1548                 if (split && i == split) {
1549                         colno = (winno - mwin) / stacks;
1550                         if (s <= (winno - mwin) % stacks)
1551                                 colno++;
1552                         split = split + colno;
1553                         hrh = (r_g.h / colno);
1554                         extra = r_g.h - (colno * hrh);
1555                         if (flip)
1556                                 win_g.x = r_g.x;
1557                         else
1558                                 win_g.x += win_g.w + 2;
1559                         win_g.w = (r_g.w - msize - (stacks * 2)) / stacks;
1560                         if (s == 1)
1561                                 win_g.w += (r_g.w - msize - (stacks * 2)) %
1562                                     stacks;
1563                         s--;
1564                         j = 0;
1565                 }
1566                 win_g.h = hrh - 2;
1567                 if (rot) {
1568                         h_inc = win->sh.width_inc;
1569                         h_base = win->sh.base_width;
1570                 } else {
1571                         h_inc = win->sh.height_inc;
1572                         h_base = win->sh.base_height;
1573                 }
1574                 if (j == colno - 1) {
1575                         win_g.h = hrh + extra;
1576                 } else if (h_inc > 1 && h_inc < h_slice) {
1577                         /* adjust for window's requested size increment */
1578                         remain = (win_g.h - h_base) % h_inc;
1579                         missing = h_inc - remain;
1580
1581                         if (missing <= extra || j == 0) {
1582                                 extra -= missing;
1583                                 win_g.h += missing;
1584                         } else {
1585                                 win_g.h -= remain;
1586                                 extra += remain;
1587                         }
1588                 }
1589
1590                 if (j == 0)
1591                         win_g.y = r_g.y;
1592                 else
1593                         win_g.y += last_h + 2;
1594
1595                 bzero(&wc, sizeof wc);
1596                 wc.border_width = 1;
1597                 if (rot) {
1598                         win->g.x = wc.x = win_g.y;
1599                         win->g.y = wc.y = win_g.x;
1600                         win->g.w = wc.width = win_g.h;
1601                         win->g.h = wc.height = win_g.w;
1602                 } else {
1603                         win->g.x = wc.x = win_g.x;
1604                         win->g.y = wc.y = win_g.y;
1605                         win->g.w = wc.width = win_g.w;
1606                         win->g.h = wc.height = win_g.h;
1607                 }
1608                 adjust_font(win);
1609                 mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1610                 XConfigureWindow(display, win->id, mask, &wc);
1611                 XMapRaised(display, win->id);
1612
1613                 last_h = win_g.h;
1614                 i++;
1615                 j++;
1616         }
1617
1618  notiles:
1619         /* now, stack all the floaters and transients */
1620         TAILQ_FOREACH(win, &ws->winlist, entry) {
1621                 if (win->transient == 0 && win->floating == 0)
1622                         continue;
1623
1624                 stack_floater(win, ws->r);
1625                 XMapRaised(display, win->id);
1626         }
1627
1628         if (winfocus)
1629                 focus_win(winfocus); /* has to be done outside of the loop */
1630 }
1631
1632 void
1633 vertical_config(struct workspace *ws, int id)
1634 {
1635         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1636
1637         switch (id) {
1638         case SWM_ARG_ID_STACKRESET:
1639         case SWM_ARG_ID_STACKINIT:
1640                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1641                 ws->l_state.vertical_mwin = 1;
1642                 ws->l_state.vertical_stacks = 1;
1643                 break;
1644         case SWM_ARG_ID_MASTERSHRINK:
1645                 if (ws->l_state.vertical_msize > 1)
1646                         ws->l_state.vertical_msize--;
1647                 break;
1648         case SWM_ARG_ID_MASTERGROW:
1649                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1650                         ws->l_state.vertical_msize++;
1651                 break;
1652         case SWM_ARG_ID_MASTERADD:
1653                 ws->l_state.vertical_mwin++;
1654                 break;
1655         case SWM_ARG_ID_MASTERDEL:
1656                 if (ws->l_state.vertical_mwin > 0)
1657                         ws->l_state.vertical_mwin--;
1658                 break;
1659         case SWM_ARG_ID_STACKINC:
1660                 ws->l_state.vertical_stacks++;
1661                 break;
1662         case SWM_ARG_ID_STACKDEC:
1663                 if (ws->l_state.vertical_stacks > 1)
1664                         ws->l_state.vertical_stacks--;
1665                 break;
1666         default:
1667                 return;
1668         }
1669 }
1670
1671 void
1672 vertical_stack(struct workspace *ws, struct swm_geometry *g)
1673 {
1674         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1675
1676         stack_master(ws, g, 0, 0);
1677 }
1678
1679 void
1680 horizontal_config(struct workspace *ws, int id)
1681 {
1682         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1683
1684         switch (id) {
1685         case SWM_ARG_ID_STACKRESET:
1686         case SWM_ARG_ID_STACKINIT:
1687                 ws->l_state.horizontal_mwin = 1;
1688                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1689                 ws->l_state.horizontal_stacks = 1;
1690                 break;
1691         case SWM_ARG_ID_MASTERSHRINK:
1692                 if (ws->l_state.horizontal_msize > 1)
1693                         ws->l_state.horizontal_msize--;
1694                 break;
1695         case SWM_ARG_ID_MASTERGROW:
1696                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1697                         ws->l_state.horizontal_msize++;
1698                 break;
1699         case SWM_ARG_ID_MASTERADD:
1700                 ws->l_state.horizontal_mwin++;
1701                 break;
1702         case SWM_ARG_ID_MASTERDEL:
1703                 if (ws->l_state.horizontal_mwin > 0)
1704                         ws->l_state.horizontal_mwin--;
1705                 break;
1706         case SWM_ARG_ID_STACKINC:
1707                 ws->l_state.horizontal_stacks++;
1708                 break;
1709         case SWM_ARG_ID_STACKDEC:
1710                 if (ws->l_state.horizontal_stacks > 1)
1711                         ws->l_state.horizontal_stacks--;
1712                 break;
1713         default:
1714                 return;
1715         }
1716 }
1717
1718 void
1719 horizontal_stack(struct workspace *ws, struct swm_geometry *g)
1720 {
1721         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1722
1723         stack_master(ws, g, 1, 0);
1724 }
1725
1726 /* fullscreen view */
1727 void
1728 max_stack(struct workspace *ws, struct swm_geometry *g) {
1729         XWindowChanges          wc;
1730         struct swm_geometry     gg = *g;
1731         struct ws_win           *win, *winfocus;
1732         unsigned int            mask;
1733
1734         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1735
1736         if (count_win(ws, 0) == 0)
1737                 return;
1738
1739         if (ws->focus == NULL)
1740                 ws->focus = TAILQ_FIRST(&ws->winlist);
1741         winfocus = cur_focus ? cur_focus : ws->focus;
1742
1743         TAILQ_FOREACH(win, &ws->winlist, entry) {
1744                 if (win->transient != 0 || win->floating != 0) {
1745                         if (win == ws->focus) {
1746                                 /* XXX maximize? */
1747                                 stack_floater(win, ws->r);
1748                                 XMapRaised(display, win->id);
1749                         } else
1750                                 XUnmapWindow(display, win->id);
1751                 } else {
1752                         bzero(&wc, sizeof wc);
1753                         wc.border_width = 1;
1754                         win->g.x = wc.x = gg.x;
1755                         win->g.y = wc.y = gg.y;
1756                         win->g.w = wc.width = gg.w;
1757                         win->g.h = wc.height = gg.h;
1758                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1759                         XConfigureWindow(display, win->id, mask, &wc);
1760
1761                         if (win == ws->focus) {
1762                                 XMapRaised(display, win->id);
1763                         } else
1764                                 XUnmapWindow(display, win->id);
1765                 }
1766         }
1767
1768         if (winfocus)
1769                 focus_win(winfocus); /* has to be done outside of the loop */
1770 }
1771
1772 void
1773 send_to_ws(struct swm_region *r, union arg *args)
1774 {
1775         int                     wsid = args->id;
1776         struct ws_win           *win = cur_focus;
1777         struct workspace        *ws, *nws;
1778         Atom                    ws_idx_atom = 0;
1779         unsigned char           ws_idx_str[SWM_PROPLEN];
1780
1781         if (win == NULL)
1782                 return;
1783
1784         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1785
1786         ws = win->ws;
1787         nws = &win->s->ws[wsid];
1788
1789         XUnmapWindow(display, win->id);
1790
1791         /* find a window to focus */
1792         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1793         if (ws->focus == NULL)
1794                 ws->focus = TAILQ_FIRST(&ws->winlist);
1795         if (ws->focus == win)
1796                 ws->focus = NULL;
1797
1798         TAILQ_REMOVE(&ws->winlist, win, entry);
1799
1800         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1801         win->ws = nws;
1802
1803         /* Try to update the window's workspace property */
1804         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1805         if (ws_idx_atom &&
1806             snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
1807                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1808                     ws_idx_str);
1809                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1810                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1811         }
1812
1813         if (count_win(nws, 1) == 1)
1814                 nws->focus = win;
1815         ws->restack = 1;
1816         nws->restack = 1;
1817
1818         stack();
1819 }
1820
1821 void
1822 wkill(struct swm_region *r, union arg *args)
1823 {
1824         DNPRINTF(SWM_D_MISC, "wkill %d\n", args->id);
1825
1826         if(r->ws->focus == NULL)
1827                 return;
1828
1829         if (args->id == SWM_ARG_ID_KILLWINDOW)
1830                 XKillClient(display, r->ws->focus->id);
1831         else
1832                 if (r->ws->focus->can_delete)
1833                         client_msg(r->ws->focus, adelete);
1834 }
1835
1836 void
1837 screenshot(struct swm_region *r, union arg *args)
1838 {
1839         union arg                       a;
1840
1841         DNPRINTF(SWM_D_MISC, "screenshot\n");
1842
1843         if (ss_enabled == 0)
1844                 return;
1845
1846         switch (args->id) {
1847         case SWM_ARG_ID_SS_ALL:
1848                 spawn_screenshot[1] = "full";
1849                 break;
1850         case SWM_ARG_ID_SS_WINDOW:
1851                 spawn_screenshot[1] = "window";
1852                 break;
1853         default:
1854                 return;
1855         }
1856         a.argv = spawn_screenshot;
1857         spawn(r, &a);
1858 }
1859
1860 void
1861 floating_toggle(struct swm_region *r, union arg *args)
1862 {
1863         struct ws_win   *win = cur_focus;
1864
1865         if (win == NULL)
1866                 return;
1867
1868         win->floating = !win->floating;
1869         win->manual = 0;
1870         stack();
1871         focus_win(win);
1872 }
1873
1874 /* key definitions */
1875 struct key {
1876         unsigned int            mod;
1877         KeySym                  keysym;
1878         void                    (*func)(struct swm_region *r, union arg *);
1879         union arg               args;
1880 } keys[] = {
1881         /* modifier             key     function                argument */
1882         { MODKEY,               XK_space,       cycle_layout,   {0} },
1883         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1884         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1885         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1886         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1887         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1888         { MODKEY | ShiftMask,   XK_comma,       stack_config,   {.id = SWM_ARG_ID_STACKINC} },
1889         { MODKEY | ShiftMask,   XK_period,      stack_config,   {.id = SWM_ARG_ID_STACKDEC} },
1890         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1891         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1892         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1893         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1894         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1895         { MODKEY | ShiftMask,   XK_Return,      spawnterm,      {.argv = spawn_term} },
1896         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1897         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1898         { MODKEY,               XK_q,           restart,        {0} },
1899         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1900         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1901         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1902         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1903         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1904         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1905         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1906         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1907         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1908         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1909         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1910         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1911         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1912         { MODKEY | ShiftMask,   XK_Right,       cyclescr,       {.id = SWM_ARG_ID_CYCLESC_UP} },
1913         { MODKEY | ShiftMask,   XK_Left,        cyclescr,       {.id = SWM_ARG_ID_CYCLESC_DOWN} },
1914         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1915         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1916         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1917         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1918         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1919         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1920         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1921         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1922         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1923         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1924         { MODKEY,               XK_b,           bar_toggle,     {0} },
1925         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1926         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1927         { MODKEY | ShiftMask,   XK_x,           wkill,          {.id = SWM_ARG_ID_KILLWINDOW} },
1928         { MODKEY,               XK_x,           wkill,          {.id = SWM_ARG_ID_DELETEWINDOW} },
1929         { MODKEY,               XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_ALL} },
1930         { MODKEY | ShiftMask,   XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_WINDOW} },
1931         { MODKEY,               XK_t,           floating_toggle,{0} },
1932         { MODKEY | ShiftMask,   XK_v,           version,        {0} },
1933         { MODKEY | ShiftMask,   XK_Delete,      spawn,          {.argv = spawn_lock} },
1934         { MODKEY | ShiftMask,   XK_i,           spawn,          {.argv = spawn_initscr} },
1935 };
1936
1937 void
1938 resize_window(struct ws_win *win, int center)
1939 {
1940         unsigned int            mask;
1941         XWindowChanges          wc;
1942         struct swm_region       *r;
1943
1944         r = root_to_region(win->wa.root);
1945         bzero(&wc, sizeof wc);
1946         mask = CWBorderWidth | CWWidth | CWHeight;
1947         wc.border_width = 1;
1948         wc.width = win->g.w;
1949         wc.height = win->g.h;
1950         if (center == SWM_ARG_ID_CENTER) {
1951                 wc.x = (WIDTH(r) - win->g.w) / 2;
1952                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1953                 mask |= CWX | CWY;
1954         }
1955
1956         DNPRINTF(SWM_D_STACK, "resize_window: win %lu x %d y %d w %d h %d\n",
1957             win->id, wc.x, wc.y, wc.width, wc.height);
1958
1959         XConfigureWindow(display, win->id, mask, &wc);
1960         config_win(win);
1961 }
1962
1963 void
1964 resize(struct ws_win *win, union arg *args)
1965 {
1966         XEvent                  ev;
1967         Time                    time = 0;
1968
1969         DNPRINTF(SWM_D_MOUSE, "resize: win %lu floating %d trans %d\n",
1970             win->id, win->floating, win->transient);
1971
1972         if (!(win->transient != 0 || win->floating != 0))
1973                 return;
1974
1975         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
1976             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
1977                 return;
1978         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w, win->g.h);
1979         do {
1980                 XMaskEvent(display, MOUSEMASK | ExposureMask |
1981                     SubstructureRedirectMask, &ev);
1982                 switch(ev.type) {
1983                 case ConfigureRequest:
1984                 case Expose:
1985                 case MapRequest:
1986                         handler[ev.type](&ev);
1987                         break;
1988                 case MotionNotify:
1989                         if (ev.xmotion.x <= 1)
1990                                 ev.xmotion.x = 1;
1991                         if (ev.xmotion.y <= 1)
1992                                 ev.xmotion.y = 1;
1993                         win->g.w = ev.xmotion.x;
1994                         win->g.h = ev.xmotion.y;
1995
1996                         /* not free, don't sync more than 60 times / second */
1997                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
1998                                 time = ev.xmotion.time;
1999                                 XSync(display, False);
2000                                 resize_window(win, args->id);
2001                         }
2002                         break;
2003                 }
2004         } while (ev.type != ButtonRelease);
2005         if (time) {
2006                 XSync(display, False);
2007                 resize_window(win, args->id);
2008         }
2009         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w - 1,
2010             win->g.h - 1);
2011         XUngrabPointer(display, CurrentTime);
2012
2013         /* drain events */
2014         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
2015 }
2016
2017 void
2018 move_window(struct ws_win *win)
2019 {
2020         unsigned int            mask;
2021         XWindowChanges          wc;
2022         struct swm_region       *r;
2023
2024         r = root_to_region(win->wa.root);
2025         bzero(&wc, sizeof wc);
2026         mask = CWX | CWY;
2027         wc.x = win->g.x;
2028         wc.y = win->g.y;
2029
2030         DNPRINTF(SWM_D_STACK, "move_window: win %lu x %d y %d w %d h %d\n",
2031             win->id, wc.x, wc.y, wc.width, wc.height);
2032
2033         XConfigureWindow(display, win->id, mask, &wc);
2034         config_win(win);
2035 }
2036
2037 void
2038 move(struct ws_win *win, union arg *args)
2039 {
2040         XEvent                  ev;
2041         Time                    time = 0;
2042         int                     restack = 0;
2043
2044         DNPRINTF(SWM_D_MOUSE, "move: win %lu floating %d trans %d\n",
2045             win->id, win->floating, win->transient);
2046
2047         if (win->floating == 0) {
2048                 win->floating = 1;
2049                 win->manual = 1;
2050                 restack = 1;
2051         }
2052
2053         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
2054             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
2055                 return;
2056         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
2057         do {
2058                 XMaskEvent(display, MOUSEMASK | ExposureMask |
2059                     SubstructureRedirectMask, &ev);
2060                 switch(ev.type) {
2061                 case ConfigureRequest:
2062                 case Expose:
2063                 case MapRequest:
2064                         handler[ev.type](&ev);
2065                         break;
2066                 case MotionNotify:
2067                         win->g.x = ev.xmotion.x_root;
2068                         win->g.y = ev.xmotion.y_root;
2069
2070                         /* not free, don't sync more than 60 times / second */
2071                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
2072                                 time = ev.xmotion.time;
2073                                 XSync(display, False);
2074                                 move_window(win);
2075                         }
2076                         break;
2077                 }
2078         } while (ev.type != ButtonRelease);
2079         if (time) {
2080                 XSync(display, False);
2081                 move_window(win);
2082         }
2083         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
2084         XUngrabPointer(display, CurrentTime);
2085         if (restack)
2086                 stack();
2087
2088         /* drain events */
2089         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
2090 }
2091
2092 /* mouse */
2093 enum { client_click, root_click };
2094 struct button {
2095         unsigned int            action;
2096         unsigned int            mask;
2097         unsigned int            button;
2098         void                    (*func)(struct ws_win *, union arg *);
2099         union arg               args;
2100 } buttons[] = {
2101           /* action             key             mouse button    func            args */
2102         { client_click,         MODKEY,         Button3,        resize,         {.id = SWM_ARG_ID_DONTCENTER} },
2103         { client_click,         MODKEY | ShiftMask, Button3,    resize,         {.id = SWM_ARG_ID_CENTER} },
2104         { client_click,         MODKEY,         Button1,        move,           {0} },
2105 };
2106
2107 void
2108 update_modkey(unsigned int mod)
2109 {
2110         int                     i;
2111
2112         for (i = 0; i < LENGTH(keys); i++)
2113                 if (keys[i].mod & ShiftMask)
2114                         keys[i].mod = mod | ShiftMask;
2115                 else
2116                         keys[i].mod = mod;
2117
2118         for (i = 0; i < LENGTH(buttons); i++)
2119                 if (buttons[i].mask & ShiftMask)
2120                         buttons[i].mask = mod | ShiftMask;
2121                 else
2122                         buttons[i].mask = mod;
2123 }
2124
2125 void
2126 updatenumlockmask(void)
2127 {
2128         unsigned int            i, j;
2129         XModifierKeymap         *modmap;
2130
2131         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
2132         numlockmask = 0;
2133         modmap = XGetModifierMapping(display);
2134         for (i = 0; i < 8; i++)
2135                 for (j = 0; j < modmap->max_keypermod; j++)
2136                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
2137                           == XKeysymToKeycode(display, XK_Num_Lock))
2138                                 numlockmask = (1 << i);
2139
2140         XFreeModifiermap(modmap);
2141 }
2142
2143 void
2144 grabkeys(void)
2145 {
2146         unsigned int            i, j, k;
2147         KeyCode                 code;
2148         unsigned int            modifiers[] =
2149             { 0, LockMask, numlockmask, numlockmask | LockMask };
2150
2151         DNPRINTF(SWM_D_MISC, "grabkeys\n");
2152         updatenumlockmask();
2153
2154         for (k = 0; k < ScreenCount(display); k++) {
2155                 if (TAILQ_EMPTY(&screens[k].rl))
2156                         continue;
2157                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
2158                 for (i = 0; i < LENGTH(keys); i++) {
2159                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
2160                                 for (j = 0; j < LENGTH(modifiers); j++)
2161                                         XGrabKey(display, code,
2162                                             keys[i].mod | modifiers[j],
2163                                             screens[k].root, True,
2164                                             GrabModeAsync, GrabModeAsync);
2165                 }
2166         }
2167 }
2168
2169 void
2170 grabbuttons(struct ws_win *win, int focused)
2171 {
2172         unsigned int            i, j;
2173         unsigned int            modifiers[] =
2174             { 0, LockMask, numlockmask, numlockmask|LockMask };
2175
2176         updatenumlockmask();
2177         XUngrabButton(display, AnyButton, AnyModifier, win->id);
2178         if(focused) {
2179                 for (i = 0; i < LENGTH(buttons); i++)
2180                         if (buttons[i].action == client_click)
2181                                 for (j = 0; j < LENGTH(modifiers); j++)
2182                                         XGrabButton(display, buttons[i].button,
2183                                             buttons[i].mask | modifiers[j],
2184                                             win->id, False, BUTTONMASK,
2185                                             GrabModeAsync, GrabModeSync, None,
2186                                             None);
2187         } else
2188                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
2189                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
2190 }
2191
2192 void
2193 expose(XEvent *e)
2194 {
2195         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
2196 }
2197
2198 void
2199 keypress(XEvent *e)
2200 {
2201         unsigned int            i;
2202         KeySym                  keysym;
2203         XKeyEvent               *ev = &e->xkey;
2204
2205         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
2206
2207         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
2208         for (i = 0; i < LENGTH(keys); i++)
2209                 if (keysym == keys[i].keysym
2210                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
2211                    && keys[i].func)
2212                         keys[i].func(root_to_region(ev->root),
2213                             &(keys[i].args));
2214 }
2215
2216 void
2217 buttonpress(XEvent *e)
2218 {
2219         XButtonPressedEvent     *ev = &e->xbutton;
2220
2221         struct ws_win           *win;
2222         int                     i, action;
2223
2224         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
2225
2226         action = root_click;
2227         if ((win = find_window(ev->window)) == NULL)
2228                 return;
2229         else {
2230                 focus_win(win);
2231                 action = client_click;
2232         }
2233
2234         for (i = 0; i < LENGTH(buttons); i++)
2235                 if (action == buttons[i].action && buttons[i].func &&
2236                     buttons[i].button == ev->button &&
2237                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
2238                         buttons[i].func(win, &buttons[i].args);
2239 }
2240
2241 void
2242 set_win_state(struct ws_win *win, long state)
2243 {
2244         long                    data[] = {state, None};
2245
2246         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
2247
2248         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
2249             (unsigned char *)data, 2);
2250 }
2251
2252 struct ws_win *
2253 manage_window(Window id)
2254 {
2255         Window                  trans;
2256         struct workspace        *ws;
2257         struct ws_win           *win;
2258         int                     format, i, ws_idx, n;
2259         unsigned long           nitems, bytes;
2260         Atom                    ws_idx_atom = 0, type;
2261         Atom                    *prot = NULL, *pp;
2262         unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
2263         struct swm_region       *r;
2264         long                    mask;
2265         const char              *errstr;
2266         XWindowChanges          wc;
2267
2268         if ((win = find_window(id)) != NULL)
2269                         return (win);   /* already being managed */
2270
2271         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
2272                 errx(1, "calloc: failed to allocate memory for new window");
2273
2274         /* Get all the window data in one shot */
2275         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2276         if (ws_idx_atom)
2277                 XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
2278                     False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
2279         XGetWindowAttributes(display, id, &win->wa);
2280         XGetTransientForHint(display, id, &trans);
2281         XGetWMNormalHints(display, id, &win->sh, &mask); /* XXX function? */
2282         if (trans) {
2283                 win->transient = trans;
2284                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
2285                     (unsigned)win->id, win->transient);
2286         }
2287         /* get supported protocols */
2288         if (XGetWMProtocols(display, id, &prot, &n)) {
2289                 for (i = 0, pp = prot; i < n; i++, pp++)
2290                         if (*pp == adelete)
2291                                 win->can_delete = 1;
2292                 if (prot)
2293                         XFree(prot);
2294         }
2295
2296         /*
2297          * Figure out where to put the window. If it was previously assigned to
2298          * a workspace (either by spawn() or manually moving), and isn't
2299          * transient, * put it in the same workspace
2300          */
2301         r = root_to_region(win->wa.root);
2302         if (prop && win->transient == 0) {
2303                 DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
2304                 ws_idx = strtonum(prop, 0, 9, &errstr);
2305                 if (errstr) {
2306                         DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
2307                             errstr, prop);
2308                 }
2309                 ws = &r->s->ws[ws_idx];
2310         } else
2311                 ws = r->ws;
2312
2313         /* set up the window layout */
2314         win->id = id;
2315         win->ws = ws;
2316         win->s = r->s;  /* this never changes */
2317         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
2318
2319         win->g.w = win->wa.width;
2320         win->g.h = win->wa.height;
2321         win->g.x = win->wa.x;
2322         win->g.y = win->wa.y;
2323
2324         /* Set window properties so we can remember this after reincarnation */
2325         if (ws_idx_atom && prop == NULL &&
2326             snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
2327                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
2328                     ws_idx_str);
2329                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
2330                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
2331         }
2332         XFree(prop);
2333
2334         if (XGetClassHint(display, win->id, &win->ch)) {
2335                 DNPRINTF(SWM_D_CLASS, "class: %s name: %s\n",
2336                     win->ch.res_class, win->ch.res_name);
2337                 for (i = 0; quirks[i].class != NULL && quirks[i].name != NULL &&
2338                     quirks[i].quirk != 0; i++){
2339                         if (!strcmp(win->ch.res_class, quirks[i].class) &&
2340                             !strcmp(win->ch.res_name, quirks[i].name)) {
2341                                 DNPRINTF(SWM_D_CLASS, "found: %s name: %s\n",
2342                                     win->ch.res_class, win->ch.res_name);
2343                                 if (quirks[i].quirk & SWM_Q_FLOAT)
2344                                         win->floating = 1;
2345                                 win->quirks = quirks[i].quirk;
2346                         }
2347                 }
2348         }
2349
2350         /* alter window position if quirky */
2351         if (win->quirks & SWM_Q_ANYWHERE) {
2352                 win->manual = 1; /* don't center the quirky windows */
2353                 bzero(&wc, sizeof wc);
2354                 mask = 0;
2355                 if (win->g.y < bar_height) {
2356                         win->g.y = wc.y = bar_height;
2357                         mask |= CWY;
2358                 }
2359                 if (win->g.w + win->g.x > WIDTH(r)) {
2360                         win->g.x = wc.x = WIDTH(win->ws->r) - win->g.w - 2;
2361                         mask |= CWX;
2362                 }
2363                 wc.border_width = 1;
2364                 mask |= CWBorderWidth;
2365                 XConfigureWindow(display, win->id, mask, &wc);
2366         }
2367
2368         /* Reset font sizes (the bruteforce way; no default keybinding). */
2369         if (win->quirks & SWM_Q_XTERM_FONTADJ) {
2370                 for (i = 0; i < SWM_MAX_FONT_STEPS; i++)
2371                         fake_keypress(win, XK_KP_Subtract, ShiftMask);
2372                 for (i = 0; i < SWM_MAX_FONT_STEPS; i++)
2373                         fake_keypress(win, XK_KP_Add, ShiftMask);
2374         }
2375
2376         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
2377             PropertyChangeMask | StructureNotifyMask);
2378
2379         set_win_state(win, NormalState);
2380
2381         /* floaters need to be mapped if they are in the current workspace */
2382         if (win->floating && (ws->idx == r->ws->idx))
2383                 XMapRaised(display, win->id);
2384
2385         /* make new win focused */
2386         focus_win(win);
2387
2388         return (win);
2389 }
2390
2391 void
2392 unmanage_window(struct ws_win *win)
2393 {
2394         struct workspace        *ws;
2395
2396         if (win == NULL)
2397                 return;
2398
2399         DNPRINTF(SWM_D_MISC, "unmanage_window:  %lu\n", win->id);
2400
2401         /* don't unmanage if we are switching workspaces */
2402         ws = win->ws;
2403         if (ws->restack)
2404                 return;
2405
2406         /* find a window to focus */
2407         if (ws->focus == win)
2408                 ws->focus = TAILQ_PREV(win, ws_win_list, entry);
2409         if (ws->focus == NULL)
2410                 ws->focus = TAILQ_FIRST(&ws->winlist);
2411         if (ws->focus == NULL || ws->focus == win) {
2412                 ws->focus = NULL;
2413                 unfocus_all();
2414         } else
2415                 focus_win(ws->focus);
2416         if (ws->focus_prev == win)
2417                 ws->focus_prev = NULL;
2418
2419         TAILQ_REMOVE(&win->ws->winlist, win, entry);
2420         set_win_state(win, WithdrawnState);
2421         if (win->ch.res_class)
2422                 XFree(win->ch.res_class);
2423         if (win->ch.res_name)
2424                 XFree(win->ch.res_name);
2425         free(win);
2426 }
2427
2428 void
2429 configurerequest(XEvent *e)
2430 {
2431         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
2432         struct ws_win           *win;
2433         int                     new = 0;
2434         XWindowChanges          wc;
2435
2436         if ((win = find_window(ev->window)) == NULL)
2437                 new = 1;
2438
2439         if (new) {
2440                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
2441                     ev->window);
2442                 bzero(&wc, sizeof wc);
2443                 wc.x = ev->x;
2444                 wc.y = ev->y;
2445                 wc.width = ev->width;
2446                 wc.height = ev->height;
2447                 wc.border_width = ev->border_width;
2448                 wc.sibling = ev->above;
2449                 wc.stack_mode = ev->detail;
2450                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
2451         } else {
2452                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
2453                     ev->window);
2454                 if (win->floating) {
2455                         if (ev->value_mask & CWX)
2456                                 win->g.x = ev->x;
2457                         if (ev->value_mask & CWY)
2458                                 win->g.y = ev->y;
2459                         if (ev->value_mask & CWWidth)
2460                                 win->g.w = ev->width;
2461                         if (ev->value_mask & CWHeight)
2462                                 win->g.h = ev->height;
2463                         if (win->ws->r != NULL) {
2464                                 /* this seems to be full screen */
2465                                 if (win->g.w >= WIDTH(win->ws->r)) {
2466                                         win->g.x = 0;
2467                                         win->g.w = WIDTH(win->ws->r);
2468                                         ev->value_mask |= CWX | CWWidth;
2469                                 }
2470                                 if (win->g.h >= HEIGHT(win->ws->r)) {
2471                                         /* kill border */
2472                                         win->g.y = 0;
2473                                         win->g.h = HEIGHT(win->ws->r);
2474                                         ev->value_mask |= CWY | CWHeight;
2475                                 }
2476                         }
2477                         if ((ev->value_mask & (CWX | CWY)) &&
2478                             !(ev->value_mask & (CWWidth | CWHeight)))
2479                                 config_win(win);
2480                         XMoveResizeWindow(display, win->id,
2481                             win->g.x, win->g.y, win->g.w, win->g.h);
2482                 } else
2483                         config_win(win);
2484         }
2485 }
2486
2487 void
2488 configurenotify(XEvent *e)
2489 {
2490         struct ws_win           *win;
2491         long                    mask;
2492
2493         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
2494             e->xconfigure.window);
2495
2496         XMapWindow(display, e->xconfigure.window);
2497         win = find_window(e->xconfigure.window);
2498         if (win) {
2499                 XGetWMNormalHints(display, win->id, &win->sh, &mask);
2500                 adjust_font(win);
2501                 XMapWindow(display, win->id);
2502                 if (font_adjusted)
2503                         stack();
2504         }
2505 }
2506
2507 void
2508 destroynotify(XEvent *e)
2509 {
2510         struct ws_win           *win;
2511         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2512
2513         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
2514
2515         if ((win = find_window(ev->window)) != NULL) {
2516                 unmanage_window(win);
2517                 stack();
2518         }
2519 }
2520
2521 void
2522 enternotify(XEvent *e)
2523 {
2524         XCrossingEvent          *ev = &e->xcrossing;
2525         struct ws_win           *win;
2526
2527         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
2528
2529         if (ignore_enter) {
2530                 /* eat event(r) to prevent autofocus */
2531                 ignore_enter--;
2532                 return;
2533         }
2534
2535         if ((win = find_window(ev->window)) != NULL)
2536                 focus_win(win);
2537 }
2538
2539 void
2540 focusin(XEvent *e)
2541 {
2542         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
2543 }
2544
2545 void
2546 mappingnotify(XEvent *e)
2547 {
2548         XMappingEvent           *ev = &e->xmapping;
2549
2550         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
2551
2552         XRefreshKeyboardMapping(ev);
2553         if (ev->request == MappingKeyboard)
2554                 grabkeys();
2555 }
2556
2557 void
2558 maprequest(XEvent *e)
2559 {
2560         XMapRequestEvent        *ev = &e->xmaprequest;
2561         XWindowAttributes       wa;
2562
2563         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
2564             e->xmaprequest.window);
2565
2566         if (!XGetWindowAttributes(display, ev->window, &wa))
2567                 return;
2568         if (wa.override_redirect)
2569                 return;
2570         manage_window(e->xmaprequest.window);
2571
2572         stack();
2573 }
2574
2575 void
2576 propertynotify(XEvent *e)
2577 {
2578         struct ws_win           *win;
2579         XPropertyEvent          *ev = &e->xproperty;
2580
2581         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
2582             ev->window);
2583
2584         if (ev->state == PropertyDelete)
2585                 return; /* ignore */
2586         win = find_window(ev->window);
2587         if (win == NULL)
2588                 return;
2589
2590         switch (ev->atom) {
2591         case XA_WM_NORMAL_HINTS:
2592 #if 0
2593                 long            mask;
2594                 XGetWMNormalHints(display, win->id, &win->sh, &mask);
2595                 fprintf(stderr, "normal hints: flag 0x%x\n", win->sh.flags);
2596                 if (win->sh.flags & PMinSize) {
2597                         win->g.w = win->sh.min_width;
2598                         win->g.h = win->sh.min_height;
2599                         fprintf(stderr, "min %d %d\n", win->g.w, win->g.h);
2600                 }
2601                 XMoveResizeWindow(display, win->id,
2602                     win->g.x, win->g.y, win->g.w, win->g.h);
2603 #endif
2604                 break;
2605         default:
2606                 break;
2607         }
2608 }
2609
2610 void
2611 unmapnotify(XEvent *e)
2612 {
2613         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2614         struct ws_win           *win;
2615
2616         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
2617
2618         if ((win = find_window(ev->window)) != NULL)
2619                 if (win->transient)
2620                         unmanage_window(win);
2621 }
2622
2623 void
2624 visibilitynotify(XEvent *e)
2625 {
2626         int                     i;
2627         struct swm_region       *r;
2628
2629         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
2630             e->xvisibility.window);
2631         if (e->xvisibility.state == VisibilityUnobscured)
2632                 for (i = 0; i < ScreenCount(display); i++)
2633                         TAILQ_FOREACH(r, &screens[i].rl, entry)
2634                                 if (e->xvisibility.window == r->bar_window)
2635                                         bar_update();
2636 }
2637
2638 int
2639 xerror_start(Display *d, XErrorEvent *ee)
2640 {
2641         other_wm = 1;
2642         return (-1);
2643 }
2644
2645 int
2646 xerror(Display *d, XErrorEvent *ee)
2647 {
2648         /* fprintf(stderr, "error: %p %p\n", display, ee); */
2649         return (-1);
2650 }
2651
2652 int
2653 active_wm(void)
2654 {
2655         other_wm = 0;
2656         xerrorxlib = XSetErrorHandler(xerror_start);
2657
2658         /* this causes an error if some other window manager is running */
2659         XSelectInput(display, DefaultRootWindow(display),
2660             SubstructureRedirectMask);
2661         XSync(display, False);
2662         if (other_wm)
2663                 return (1);
2664
2665         XSetErrorHandler(xerror);
2666         XSync(display, False);
2667         return (0);
2668 }
2669
2670 long
2671 getstate(Window w)
2672 {
2673         int                     format, status;
2674         long                    result = -1;
2675         unsigned char           *p = NULL;
2676         unsigned long           n, extra;
2677         Atom                    real;
2678
2679         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
2680             &real, &format, &n, &extra, (unsigned char **)&p);
2681         if (status != Success)
2682                 return (-1);
2683         if (n != 0)
2684                 result = *((long *)p);
2685         XFree(p);
2686         return (result);
2687 }
2688
2689 void
2690 new_region(struct swm_screen *s, int x, int y, int w, int h)
2691 {
2692         struct swm_region       *r, *n;
2693         struct workspace        *ws = NULL;
2694         int                     i;
2695
2696         DNPRINTF(SWM_D_MISC, "new region: screen[%d]:%dx%d+%d+%d\n",
2697              s->idx, w, h, x, y);
2698
2699         /* remove any conflicting regions */
2700         n = TAILQ_FIRST(&s->rl);
2701         while (n) {
2702                 r = n;
2703                 n = TAILQ_NEXT(r, entry);
2704                 if (X(r) < (x + w) &&
2705                     (X(r) + WIDTH(r)) > x &&
2706                     Y(r) < (y + h) &&
2707                     (Y(r) + HEIGHT(r)) > y) {
2708                         XDestroyWindow(display, r->bar_window);
2709                         TAILQ_REMOVE(&s->rl, r, entry);
2710                         TAILQ_INSERT_TAIL(&s->orl, r, entry);
2711                 }
2712         }
2713
2714         /* search old regions for one to reuse */
2715
2716         /* size + location match */
2717         TAILQ_FOREACH(r, &s->orl, entry)
2718                 if (X(r) == x && Y(r) == y &&
2719                     HEIGHT(r) == h && WIDTH(r) == w)
2720                         break;
2721
2722         /* size match */
2723         TAILQ_FOREACH(r, &s->orl, entry)
2724                 if (HEIGHT(r) == h && WIDTH(r) == w)
2725                         break;
2726
2727         if (r != NULL) {
2728                 TAILQ_REMOVE(&s->orl, r, entry);
2729                 /* try to use old region's workspace */
2730                 if (r->ws->r == NULL)
2731                         ws = r->ws;
2732         } else
2733                 if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
2734                         errx(1, "calloc: failed to allocate memory for screen");
2735
2736         /* if we don't have a workspace already, find one */
2737         if (ws == NULL) {
2738                 for (i = 0; i < SWM_WS_MAX; i++)
2739                         if (s->ws[i].r == NULL) {
2740                                 ws = &s->ws[i];
2741                                 break;
2742                         }
2743         }
2744
2745         if (ws == NULL)
2746                 errx(1, "no free workspaces\n");
2747
2748         X(r) = x;
2749         Y(r) = y;
2750         WIDTH(r) = w;
2751         HEIGHT(r) = h;
2752         r->s = s;
2753         r->ws = ws;
2754         ws->r = r;
2755         TAILQ_INSERT_TAIL(&s->rl, r, entry);
2756 }
2757
2758 void
2759 scan_xrandr(int i)
2760 {
2761 #ifdef SWM_XRR_HAS_CRTC
2762         XRRCrtcInfo             *ci;
2763         XRRScreenResources      *sr;
2764         int                     c;
2765         int                     ncrtc = 0;
2766 #endif /* SWM_XRR_HAS_CRTC */
2767         struct swm_region       *r;
2768
2769
2770         if (i >= ScreenCount(display))
2771                 errx(1, "invalid screen");
2772
2773         /* remove any old regions */
2774         while ((r = TAILQ_FIRST(&screens[i].rl)) != NULL) {
2775                 r->ws->r = NULL;
2776                 XDestroyWindow(display, r->bar_window);
2777                 TAILQ_REMOVE(&screens[i].rl, r, entry);
2778                 TAILQ_INSERT_TAIL(&screens[i].orl, r, entry);
2779         }
2780
2781         /* map virtual screens onto physical screens */
2782 #ifdef SWM_XRR_HAS_CRTC
2783         if (xrandr_support) {
2784                 sr = XRRGetScreenResources(display, screens[i].root);
2785                 if (sr == NULL)
2786                         new_region(&screens[i], 0, 0,
2787                             DisplayWidth(display, i),
2788                             DisplayHeight(display, i));
2789                 else
2790                         ncrtc = sr->ncrtc;
2791
2792                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2793                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2794                         if (ci->noutput == 0)
2795                                 continue;
2796
2797                         if (ci != NULL && ci->mode == None)
2798                                 new_region(&screens[i], 0, 0,
2799                                     DisplayWidth(display, i),
2800                                     DisplayHeight(display, i));
2801                         else
2802                                 new_region(&screens[i],
2803                                     ci->x, ci->y, ci->width, ci->height);
2804                 }
2805                 if (ci)
2806                         XRRFreeCrtcInfo(ci);
2807                 XRRFreeScreenResources(sr);
2808         } else
2809 #endif /* SWM_XRR_HAS_CRTC */
2810         {
2811                 new_region(&screens[i], 0, 0, DisplayWidth(display, i),
2812                     DisplayHeight(display, i));
2813         }
2814 }
2815
2816 void
2817 screenchange(XEvent *e) {
2818         XRRScreenChangeNotifyEvent      *xe = (XRRScreenChangeNotifyEvent *)e;
2819         struct swm_region               *r;
2820         struct ws_win                   *win;
2821         int                             i;
2822
2823         DNPRINTF(SWM_D_EVENT, "screenchange: %lu\n", xe->root);
2824
2825         if (!XRRUpdateConfiguration(e))
2826                 return;
2827
2828         /* silly event doesn't include the screen index */
2829         for (i = 0; i < ScreenCount(display); i++)
2830                 if (screens[i].root == xe->root)
2831                         break;
2832         if (i >= ScreenCount(display))
2833                 errx(1, "screenchange: screen not found\n");
2834
2835         /* brute force for now, just re-enumerate the regions */
2836         scan_xrandr(i);
2837
2838         /* hide any windows that went away */
2839         TAILQ_FOREACH(r, &screens[i].rl, entry)
2840                 TAILQ_FOREACH(win, &r->ws->winlist, entry)
2841                         XUnmapWindow(display, win->id);
2842
2843         /* add bars to all regions */
2844         for (i = 0; i < ScreenCount(display); i++)
2845                 TAILQ_FOREACH(r, &screens[i].rl, entry)
2846                         bar_setup(r);
2847         stack();
2848 }
2849
2850 void
2851 setup_screens(void)
2852 {
2853         Window                  d1, d2, *wins = NULL;
2854         XWindowAttributes       wa;
2855         unsigned int            no;
2856         int                     i, j, k;
2857         int                     errorbase, major, minor;
2858         struct workspace        *ws;
2859         int                     ws_idx_atom;
2860
2861
2862         if ((screens = calloc(ScreenCount(display),
2863              sizeof(struct swm_screen))) == NULL)
2864                 errx(1, "calloc: screens");
2865
2866         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2867
2868         /* initial Xrandr setup */
2869         xrandr_support = XRRQueryExtension(display,
2870             &xrandr_eventbase, &errorbase);
2871         if (xrandr_support)
2872                 if (XRRQueryVersion(display, &major, &minor) && major < 1)
2873                         xrandr_support = 0;
2874
2875         /* map physical screens */
2876         for (i = 0; i < ScreenCount(display); i++) {
2877                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2878                 screens[i].idx = i;
2879                 TAILQ_INIT(&screens[i].rl);
2880                 TAILQ_INIT(&screens[i].orl);
2881                 screens[i].root = RootWindow(display, i);
2882
2883                 /* set default colors */
2884                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2885                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2886                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2887                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2888                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2889
2890                 /* init all workspaces */
2891                 /* XXX these should be dynamically allocated too */
2892                 for (j = 0; j < SWM_WS_MAX; j++) {
2893                         ws = &screens[i].ws[j];
2894                         ws->idx = j;
2895                         ws->restack = 1;
2896                         ws->focus = NULL;
2897                         ws->r = NULL;
2898                         TAILQ_INIT(&ws->winlist);
2899
2900                         for (k = 0; layouts[k].l_stack != NULL; k++)
2901                                 if (layouts[k].l_config != NULL)
2902                                         layouts[k].l_config(ws,
2903                                             SWM_ARG_ID_STACKINIT);
2904                         ws->cur_layout = &layouts[0];
2905                 }
2906                 /* grab existing windows (before we build the bars)*/
2907                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2908                         continue;
2909
2910                 scan_xrandr(i);
2911
2912                 if (xrandr_support)
2913                         XRRSelectInput(display, screens[i].root,
2914                             RRScreenChangeNotifyMask);
2915
2916                 /* attach windows to a region */
2917                 /* normal windows */
2918                 for (j = 0; j < no; j++) {
2919                         XGetWindowAttributes(display, wins[j], &wa);
2920                         if (!XGetWindowAttributes(display, wins[j], &wa) ||
2921                             wa.override_redirect ||
2922                             XGetTransientForHint(display, wins[j], &d1))
2923                                 continue;
2924
2925                         if (wa.map_state == IsViewable ||
2926                             getstate(wins[j]) == NormalState)
2927                                 manage_window(wins[j]);
2928                 }
2929                 /* transient windows */
2930                 for (j = 0; j < no; j++) {
2931                         if (!XGetWindowAttributes(display, wins[j], &wa))
2932                                 continue;
2933
2934                         if (XGetTransientForHint(display, wins[j], &d1) &&
2935                             (wa.map_state == IsViewable || getstate(wins[j]) ==
2936                             NormalState))
2937                                 manage_window(wins[j]);
2938                 }
2939                 if (wins) {
2940                         XFree(wins);
2941                         wins = NULL;
2942                 }
2943         }
2944 }
2945
2946 void
2947 workaround(void)
2948 {
2949         int                     i;
2950         Atom                    netwmcheck, netwmname, utf8_string;
2951         Window                  root;
2952
2953         /* work around sun jdk bugs, code from wmname */
2954         netwmcheck = XInternAtom(display, "_NET_SUPPORTING_WM_CHECK", False);
2955         netwmname = XInternAtom(display, "_NET_WM_NAME", False);
2956         utf8_string = XInternAtom(display, "UTF8_STRING", False);
2957         for (i = 0; i < ScreenCount(display); i++) {
2958                 root = screens[i].root;
2959                 XChangeProperty(display, root, netwmcheck, XA_WINDOW, 32,
2960                     PropModeReplace, (unsigned char *)&root, 1);
2961                 XChangeProperty(display, root, netwmname, utf8_string, 8,
2962                     PropModeReplace, "LG3D", strlen("LG3D"));
2963         }
2964 }
2965
2966 int
2967 main(int argc, char *argv[])
2968 {
2969         struct passwd           *pwd;
2970         struct swm_region       *r;
2971         char                    conf[PATH_MAX], *cfile = NULL;
2972         struct stat             sb;
2973         XEvent                  e;
2974         int                     xfd, i;
2975         fd_set                  rd;
2976
2977         start_argv = argv;
2978         fprintf(stderr, "Welcome to scrotwm V%s cvs tag: %s\n",
2979             SWM_VERSION, cvstag);
2980         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2981                 warnx("no locale support");
2982
2983         if (!(display = XOpenDisplay(0)))
2984                 errx(1, "can not open display");
2985
2986         if (active_wm())
2987                 errx(1, "other wm running");
2988
2989         astate = XInternAtom(display, "WM_STATE", False);
2990         aprot = XInternAtom(display, "WM_PROTOCOLS", False);
2991         adelete = XInternAtom(display, "WM_DELETE_WINDOW", False);
2992
2993         /* look for local and global conf file */
2994         pwd = getpwuid(getuid());
2995         if (pwd == NULL)
2996                 errx(1, "invalid user %d", getuid());
2997
2998         setup_screens();
2999
3000         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
3001         if (stat(conf, &sb) != -1) {
3002                 if (S_ISREG(sb.st_mode))
3003                         cfile = conf;
3004         } else {
3005                 /* try global conf file */
3006                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
3007                 if (!stat(conf, &sb))
3008                         if (S_ISREG(sb.st_mode))
3009                                 cfile = conf;
3010         }
3011         if (cfile)
3012                 conf_load(cfile);
3013
3014         /* setup all bars */
3015         for (i = 0; i < ScreenCount(display); i++)
3016                 TAILQ_FOREACH(r, &screens[i].rl, entry)
3017                         bar_setup(r);
3018
3019         /* set some values to work around bad programs */
3020         workaround();
3021
3022         grabkeys();
3023         stack();
3024
3025         xfd = ConnectionNumber(display);
3026         while (running) {
3027                 FD_ZERO(&rd);
3028                 FD_SET(xfd, &rd);
3029                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
3030                         if (errno != EINTR)
3031                                 errx(1, "select failed");
3032                 if (bar_alarm) {
3033                         bar_alarm = 0;
3034                         bar_update();
3035                 }
3036                 while (XPending(display)) {
3037                         XNextEvent(display, &e);
3038                         if (e.type < LASTEvent) {
3039                                 if (handler[e.type])
3040                                         handler[e.type](&e);
3041                                 else
3042                                         DNPRINTF(SWM_D_EVENT,
3043                                             "win: %lu unknown event: %d\n",
3044                                             e.xany.window, e.type);
3045                         } else {
3046                                 switch (e.type - xrandr_eventbase) {
3047                                 case RRScreenChangeNotify:
3048                                         screenchange(&e);
3049                                         break;
3050                                 default:
3051                                         DNPRINTF(SWM_D_EVENT,
3052                                             "win: %lu unknown xrandr event: "
3053                                             "%d\n", e.xany.window, e.type);
3054                                         break;
3055                                 }
3056                         }
3057                 }
3058         }
3059
3060         XCloseDisplay(display);
3061
3062         return (0);
3063 }