scrotwm.c

   1 /* $scrotwm$ */
   2 /*
   3  * Copyright (c) 2009 Marco Peereboom <marco@peereboom.us>
   4  * Copyright (c) 2009 Ryan McBride <mcbride@countersiege.com>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 /*
  19  * Much code and ideas taken from dwm under the following license:
  20  * MIT/X Consortium License
  21  *
  22  * 2006-2008 Anselm R Garbe <garbeam at gmail dot com>
  23  * 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
  24  * 2006-2007 Jukka Salmi <jukka at salmi dot ch>
  25  * 2007 Premysl Hruby <dfenze at gmail dot com>
  26  * 2007 Szabolcs Nagy <nszabolcs at gmail dot com>
  27  * 2007 Christof Musik <christof at sendfax dot de>
  28  * 2007-2008 Enno Gottox Boland <gottox at s01 dot de>
  29  * 2007-2008 Peter Hartlich <sgkkr at hartlich dot com>
  30  * 2008 Martin Hurton <martin dot hurton at gmail dot com>
  31  *
  32  * Permission is hereby granted, free of charge, to any person obtaining a
  33  * copy of this software and associated documentation files (the "Software"),
  34  * to deal in the Software without restriction, including without limitation
  35  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  36  * and/or sell copies of the Software, and to permit persons to whom the
  37  * Software is furnished to do so, subject to the following conditions:
  38  *
  39  * The above copyright notice and this permission notice shall be included in
  40  * all copies or substantial portions of the Software.
  41  *
  42  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  43  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  44  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  45  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  46  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  47  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  48  * DEALINGS IN THE SOFTWARE.
  49  */
  50
  51 static const char       *cvstag = "$scrotwm$";
  52
  53 #define SWM_VERSION     "0.8"
  54
  55 #include <stdio.h>
  56 #include <stdlib.h>
  57 #include <err.h>
  58 #include <errno.h>
  59 #include <fcntl.h>
  60 #include <locale.h>
  61 #include <unistd.h>
  62 #include <time.h>
  63 #include <signal.h>
  64 #include <string.h>
  65 #include <util.h>
  66 #include <pwd.h>
  67 #include <ctype.h>
  68
  69 #include <sys/types.h>
  70 #include <sys/time.h>
  71 #include <sys/stat.h>
  72 #include <sys/wait.h>
  73 #include <sys/queue.h>
  74 #include <sys/param.h>
  75 #include <sys/select.h>
  76
  77 #include <X11/cursorfont.h>
  78 #include <X11/keysym.h>
  79 #include <X11/Xatom.h>
  80 #include <X11/Xlib.h>
  81 #include <X11/Xproto.h>
  82 #include <X11/Xutil.h>
  83 #include <X11/extensions/Xrandr.h>
  84
  85 #if RANDR_MAJOR < 1
  86 #  error XRandR versions less than 1.0 are not supported
  87 #endif
  88
  89 #if RANDR_MAJOR >= 1
  90 #if RANDR_MINOR >= 2
  91 #define SWM_XRR_HAS_CRTC
  92 #endif
  93 #endif
  94
  95 /* #define SWM_DEBUG */
  96 #ifdef SWM_DEBUG
  97 #define DPRINTF(x...)           do { if (swm_debug) fprintf(stderr, x); } while(0)
  98 #define DNPRINTF(n,x...)        do { if (swm_debug & n) fprintf(stderr, x); } while(0)
  99 #define SWM_D_MISC              0x0001
 100 #define SWM_D_EVENT             0x0002
 101 #define SWM_D_WS                0x0004
 102 #define SWM_D_FOCUS             0x0008
 103 #define SWM_D_MOVE              0x0010
 104 #define SWM_D_STACK             0x0020
 105 #define SWM_D_MOUSE             0x0040
 106 #define SWM_D_PROP              0x0080
 107 #define SWM_D_CLASS             0x0100
 108
 109 u_int32_t               swm_debug = 0
 110                             | SWM_D_MISC
 111                             | SWM_D_EVENT
 112                             | SWM_D_WS
 113                             | SWM_D_FOCUS
 114                             | SWM_D_MOVE
 115                             | SWM_D_STACK
 116                             | SWM_D_MOUSE
 117                             | SWM_D_PROP
 118                             | SWM_D_CLASS
 119                             ;
 120 #else
 121 #define DPRINTF(x...)
 122 #define DNPRINTF(n,x...)
 123 #endif
 124
 125 #define LENGTH(x)               (sizeof x / sizeof x[0])
 126 #define MODKEY                  Mod1Mask
 127 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
 128 #define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
 129 #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
 130 #define SWM_PROPLEN             (16)
 131 #define X(r)                    (r)->g.x
 132 #define Y(r)                    (r)->g.y
 133 #define WIDTH(r)                (r)->g.w
 134 #define HEIGHT(r)               (r)->g.h
 135 #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 int                     (*xerrorxlib)(Display *, XErrorEvent *);
 144 int                     other_wm;
 145 int                     running = 1;
 146 int                     ss_enabled = 0;
 147 int                     xrandr_support;
 148 int                     xrandr_eventbase;
 149 int                     ignore_enter = 0;
 150 unsigned int            numlockmask = 0;
 151 Display                 *display;
 152
 153 int                     cycle_empty = 0;
 154 int                     cycle_visible = 0;
 155 int                     term_width = 0;
 156 int                     font_adjusted = 0;
 157
 158 /* dialog windows */
 159 double                  dialog_ratio = .6;
 160 /* status bar */
 161 #define SWM_BAR_MAX     (128)
 162 char                    *bar_argv[] = { NULL, NULL };
 163 int                     bar_pipe[2];
 164 char                    bar_ext[SWM_BAR_MAX];
 165 char                    bar_vertext[SWM_BAR_MAX];
 166 int                     bar_version = 0;
 167 sig_atomic_t            bar_alarm = 0;
 168 int                     bar_delay = 30;
 169 int                     bar_enabled = 1;
 170 int                     bar_extra = 1;
 171 int                     bar_extra_running = 0;
 172 int                     bar_verbose = 1;
 173 int                     bar_height = 0;
 174 pid_t                   bar_pid;
 175 GC                      bar_gc;
 176 XGCValues               bar_gcv;
 177 int                     bar_fidx = 0;
 178 XFontStruct             *bar_fs;
 179 char                    *bar_fonts[] = {
 180                             "-*-terminus-*-*-*-*-*-*-*-*-*-*-*-*",
 181                             "-*-times-medium-r-*-*-*-*-*-*-*-*-*-*",
 182                             NULL
 183 };
 184
 185 /* terminal + args */
 186 char                    *spawn_term[] = { "xterm", NULL };
 187 char                    *spawn_screenshot[] = { "screenshot.sh", NULL, NULL };
 188 char                    *spawn_lock[] = { "xlock", NULL };
 189 char                    *spawn_initscr[] = { "initscreen.sh", NULL };
 190 char                    *spawn_menu[] = { "dmenu_run", "-fn", NULL, "-nb", NULL,
 191                             "-nf", NULL, "-sb", NULL, "-sf", NULL, NULL };
 192
 193 #define SWM_MENU_FN     (2)
 194 #define SWM_MENU_NB     (4)
 195 #define SWM_MENU_NF     (6)
 196 #define SWM_MENU_SB     (8)
 197 #define SWM_MENU_SF     (10)
 198
 199 /* layout manager data */
 200 struct swm_geometry {
 201         int                     x;
 202         int                     y;
 203         int                     w;
 204         int                     h;
 205 };
 206
 207 struct swm_screen;
 208 struct workspace;
 209
 210 /* virtual "screens" */
 211 struct swm_region {
 212         TAILQ_ENTRY(swm_region) entry;
 213         struct swm_geometry     g;
 214         struct workspace        *ws;    /* current workspace on this region */
 215         struct swm_screen       *s;     /* screen idx */
 216         Window                  bar_window;
 217 };
 218 TAILQ_HEAD(swm_region_list, swm_region);
 219
 220 struct ws_win {
 221         TAILQ_ENTRY(ws_win)     entry;
 222         Window                  id;
 223         struct swm_geometry     g;
 224         int                     got_focus;
 225         int                     floating;
 226         int                     transient;
 227         int                     manual;
 228         int                     font_size_boundary[SWM_MAX_FONT_STEPS];
 229         int                     font_steps;
 230         int                     last_inc;
 231         unsigned long           quirks;
 232         struct workspace        *ws;    /* always valid */
 233         struct swm_screen       *s;     /* always valid, never changes */
 234         XWindowAttributes       wa;
 235         XSizeHints              sh;
 236         XClassHint              ch;
 237 };
 238 TAILQ_HEAD(ws_win_list, ws_win);
 239
 240 /* layout handlers */
 241 void    stack(void);
 242 void    vertical_config(struct workspace *, int);
 243 void    vertical_stack(struct workspace *, struct swm_geometry *);
 244 void    horizontal_config(struct workspace *, int);
 245 void    horizontal_stack(struct workspace *, struct swm_geometry *);
 246 void    max_stack(struct workspace *, struct swm_geometry *);
 247
 248 void    grabbuttons(struct ws_win *, int);
 249
 250 struct layout {
 251         void            (*l_stack)(struct workspace *, struct swm_geometry *);
 252         void            (*l_config)(struct workspace *, int);
 253 } layouts[] =  {
 254         /* stack,               configure */
 255         { vertical_stack,       vertical_config},
 256         { horizontal_stack,     horizontal_config},
 257         { max_stack,            NULL},
 258         { NULL,                 NULL},
 259 };
 260
 261 #define SWM_H_SLICE             (32)
 262 #define SWM_V_SLICE             (32)
 263
 264 /* define work spaces */
 265 struct workspace {
 266         int                     idx;            /* workspace index */
 267         int                     restack;        /* restack on switch */
 268         struct layout           *cur_layout;    /* current layout handlers */
 269         struct ws_win           *focus;         /* may be NULL */
 270         struct ws_win           *focus_prev;    /* may be NULL */
 271         struct swm_region       *r;             /* may be NULL */
 272         struct ws_win_list      winlist;        /* list of windows in ws */
 273
 274         /* stacker state */
 275         struct {
 276                                 int horizontal_msize;
 277                                 int horizontal_mwin;
 278                                 int horizontal_stacks;
 279                                 int vertical_msize;
 280                                 int vertical_mwin;
 281                                 int vertical_stacks;
 282         } l_state;
 283 };
 284
 285 enum    { SWM_S_COLOR_BAR, SWM_S_COLOR_BAR_BORDER, SWM_S_COLOR_BAR_FONT,
 286           SWM_S_COLOR_FOCUS, SWM_S_COLOR_UNFOCUS, SWM_S_COLOR_MAX };
 287
 288 /* physical screen mapping */
 289 #define SWM_WS_MAX              (10)            /* XXX Too small? */
 290 struct swm_screen {
 291         int                     idx;            /* screen index */
 292         struct swm_region_list  rl;     /* list of regions on this screen */
 293         struct swm_region_list  orl;    /* list of old regions */
 294         Window                  root;
 295         struct workspace        ws[SWM_WS_MAX];
 296
 297         /* colors */
 298         struct {
 299                 unsigned long   color;
 300                 char            *name;
 301         } c[SWM_S_COLOR_MAX];
 302 };
 303 struct swm_screen       *screens;
 304 int                     num_screens;
 305
 306 struct ws_win           *cur_focus = NULL;
 307
 308 /* args to functions */
 309 union arg {
 310         int                     id;
 311 #define SWM_ARG_ID_FOCUSNEXT    (0)
 312 #define SWM_ARG_ID_FOCUSPREV    (1)
 313 #define SWM_ARG_ID_FOCUSMAIN    (2)
 314 #define SWM_ARG_ID_SWAPNEXT     (3)
 315 #define SWM_ARG_ID_SWAPPREV     (4)
 316 #define SWM_ARG_ID_SWAPMAIN     (5)
 317 #define SWM_ARG_ID_MASTERSHRINK (6)
 318 #define SWM_ARG_ID_MASTERGROW   (7)
 319 #define SWM_ARG_ID_MASTERADD    (8)
 320 #define SWM_ARG_ID_MASTERDEL    (9)
 321 #define SWM_ARG_ID_STACKRESET   (10)
 322 #define SWM_ARG_ID_STACKINIT    (11)
 323 #define SWM_ARG_ID_CYCLEWS_UP   (12)
 324 #define SWM_ARG_ID_CYCLEWS_DOWN (13)
 325 #define SWM_ARG_ID_CYCLESC_UP   (14)
 326 #define SWM_ARG_ID_CYCLESC_DOWN (15)
 327 #define SWM_ARG_ID_STACKINC     (16)
 328 #define SWM_ARG_ID_STACKDEC     (17)
 329 #define SWM_ARG_ID_SS_ALL       (0)
 330 #define SWM_ARG_ID_SS_WINDOW    (1)
 331 #define SWM_ARG_ID_DONTCENTER   (0)
 332 #define SWM_ARG_ID_CENTER       (1)
 333         char                    **argv;
 334 };
 335
 336 /* quirks */
 337 struct quirk {
 338         char                    *class;
 339         char                    *name;
 340         unsigned long           quirk;
 341 #define SWM_Q_FLOAT             (1<<0)  /* float this window */
 342 #define SWM_Q_TRANSSZ           (1<<1)  /* transiend window size too small */
 343 #define SWM_Q_ANYWHERE          (1<<2)  /* don't position this window */
 344 #define SWM_Q_XTERM_FONTADJ     (1<<3)  /* adjust xterm fonts when resizing */
 345 } quirks[] = {
 346         { "MPlayer",            "xv",           SWM_Q_FLOAT },
 347         { "OpenOffice.org 2.4", "VCLSalFrame",  SWM_Q_FLOAT },
 348         { "OpenOffice.org 3.0", "VCLSalFrame",  SWM_Q_FLOAT },
 349         { "Firefox-bin",        "firefox-bin",  SWM_Q_TRANSSZ},
 350         { "Gimp",               "gimp",         SWM_Q_FLOAT | SWM_Q_ANYWHERE},
 351         { "XTerm",              "xterm",        SWM_Q_XTERM_FONTADJ},
 352         { NULL,                 NULL,           0},
 353 };
 354
 355 /* events */
 356 void                    expose(XEvent *);
 357 void                    keypress(XEvent *);
 358 void                    buttonpress(XEvent *);
 359 void                    configurerequest(XEvent *);
 360 void                    configurenotify(XEvent *);
 361 void                    destroynotify(XEvent *);
 362 void                    enternotify(XEvent *);
 363 void                    focusin(XEvent *);
 364 void                    mappingnotify(XEvent *);
 365 void                    maprequest(XEvent *);
 366 void                    propertynotify(XEvent *);
 367 void                    unmapnotify(XEvent *);
 368 void                    visibilitynotify(XEvent *);
 369
 370 void                    (*handler[LASTEvent])(XEvent *) = {
 371                                 [Expose] = expose,
 372                                 [KeyPress] = keypress,
 373                                 [ButtonPress] = buttonpress,
 374                                 [ConfigureRequest] = configurerequest,
 375                                 [ConfigureNotify] = configurenotify,
 376                                 [DestroyNotify] = destroynotify,
 377                                 [EnterNotify] = enternotify,
 378                                 [FocusIn] = focusin,
 379                                 [MappingNotify] = mappingnotify,
 380                                 [MapRequest] = maprequest,
 381                                 [PropertyNotify] = propertynotify,
 382                                 [UnmapNotify] = unmapnotify,
 383                                 [VisibilityNotify] = visibilitynotify,
 384 };
 385
 386 unsigned long
 387 name_to_color(char *colorname)
 388 {
 389         Colormap                cmap;
 390         Status                  status;
 391         XColor                  screen_def, exact_def;
 392         unsigned long           result = 0;
 393         char                    cname[32] = "#";
 394
 395         cmap = DefaultColormap(display, screens[0].idx);
 396         status = XAllocNamedColor(display, cmap, colorname,
 397             &screen_def, &exact_def);
 398         if (!status) {
 399                 strlcat(cname, colorname + 2, sizeof cname - 1);
 400                 status = XAllocNamedColor(display, cmap, cname, &screen_def,
 401                     &exact_def);
 402         }
 403         if (status)
 404                 result = screen_def.pixel;
 405         else
 406                 fprintf(stderr, "color '%s' not found.\n", colorname);
 407
 408         return (result);
 409 }
 410
 411 void
 412 setscreencolor(char *val, int i, int c)
 413 {
 414         if (i > 0 && i <= ScreenCount(display)) {
 415                 screens[i - 1].c[c].color = name_to_color(val);
 416                 if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 417                         errx(1, "strdup");
 418         } else if (i == -1) {
 419                 for (i = 0; i < ScreenCount(display); i++)
 420                         screens[i].c[c].color = name_to_color(val);
 421                         if ((screens[i - 1].c[c].name = strdup(val)) == NULL)
 422                                 errx(1, "strdup");
 423         } else
 424                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 425                     i, ScreenCount(display));
 426 }
 427
 428 void            new_region(struct swm_screen *, int, int, int, int);
 429
 430 void
 431 custom_region(char *val)
 432 {
 433         unsigned int                    sidx, x, y, w, h;
 434
 435         if (sscanf(val, "screen[%u]:%ux%u+%u+%u", &sidx, &w, &h, &x, &y) != 5)
 436                 errx(1, "invalid custom region, "
 437                     "should be 'screen[<n>]:<n>x<n>+<n>+<n>\n");
 438         if (sidx < 1 || sidx > ScreenCount(display))
 439                 errx(1, "invalid screen index: %d out of bounds (maximum %d)\n",
 440                     sidx, ScreenCount(display));
 441         sidx--;
 442
 443         if (w < 1 || h < 1)
 444                 errx(1, "region %ux%u+%u+%u too small\n", w, h, x, y);
 445
 446         if (x  < 0 || x > DisplayWidth(display, sidx) ||
 447             y < 0 || y > DisplayHeight(display, sidx) ||
 448             w + x > DisplayWidth(display, sidx) ||
 449             h + y > DisplayHeight(display, sidx))
 450                 errx(1, "region %ux%u+%u+%u not within screen boundaries "
 451                     "(%ux%u)\n", w, h, x, y,
 452                     DisplayWidth(display, sidx), DisplayHeight(display, sidx));
 453
 454         new_region(&screens[sidx], x, y, w, h);
 455 }
 456
 457 int
 458 varmatch(char *var, char *name, int *index)
 459 {
 460         char                    *p, buf[5];
 461         int                     i;
 462
 463         i = strncmp(var, name, 255);
 464         if (index == NULL)
 465                 return (i);
 466
 467         *index = -1;
 468         if (i <= 0)
 469                 return (i);
 470         p = var + strlen(name);
 471         if (*p++ != '[')
 472                 return (i);
 473         bzero(buf, sizeof buf);
 474         i = 0;
 475         while (isdigit(*p) && i < sizeof buf)
 476                 buf[i++] = *p++;
 477         if (i == 0 || i >= sizeof buf || *p != ']')
 478                 return (1);
 479         *index = strtonum(buf, 0, 99, NULL);
 480         return (0);
 481 }
 482
 483 /* conf file stuff */
 484 #define SWM_CONF_WS     "\n= \t"
 485 #define SWM_CONF_FILE   "scrotwm.conf"
 486 int
 487 conf_load(char *filename)
 488 {
 489         FILE                    *config;
 490         char                    *line, *cp, *var, *val;
 491         size_t                  len, lineno = 0;
 492         int                     i, sc;
 493
 494         DNPRINTF(SWM_D_MISC, "conf_load: filename %s\n", filename);
 495
 496         if (filename == NULL)
 497                 return (1);
 498
 499         if ((config = fopen(filename, "r")) == NULL)
 500                 return (1);
 501
 502         for (sc = ScreenCount(display);;) {
 503                 if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL)
 504                         if (feof(config))
 505                                 break;
 506                 cp = line;
 507                 cp += (long)strspn(cp, SWM_CONF_WS);
 508                 if (cp[0] == '\0') {
 509                         /* empty line */
 510                         free(line);
 511                         continue;
 512                 }
 513                 if ((var = strsep(&cp, SWM_CONF_WS)) == NULL || cp == NULL)
 514                         break;
 515                 cp += (long)strspn(cp, SWM_CONF_WS);
 516                 if ((val = strsep(&cp, SWM_CONF_WS)) == NULL)
 517                         break;
 518
 519                 DNPRINTF(SWM_D_MISC, "conf_load: %s=%s\n",var ,val);
 520                 switch (var[0]) {
 521                 case 'b':
 522                         if (!strncmp(var, "bar_enabled", strlen("bar_enabled")))
 523                                 bar_enabled = atoi(val);
 524                         else if (!varmatch(var, "bar_border", &i))
 525                                 setscreencolor(val, i, SWM_S_COLOR_BAR_BORDER);
 526                         else if (!varmatch(var, "bar_color", &i))
 527                                 setscreencolor(val, i, SWM_S_COLOR_BAR);
 528                         else if (!varmatch(var, "bar_font_color", &i))
 529                                 setscreencolor(val, i, SWM_S_COLOR_BAR_FONT);
 530                         else if (!strncmp(var, "bar_font", strlen("bar_font")))
 531                                 asprintf(&bar_fonts[0], "%s", val);
 532                         else if (!strncmp(var, "bar_action", strlen("bar_action")))
 533                                 asprintf(&bar_argv[0], "%s", val);
 534                         else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
 535                                 bar_delay = atoi(val);
 536                         else
 537                                 goto bad;
 538                         break;
 539
 540                 case 'c':
 541                         if (!varmatch(var, "color_focus", &i))
 542                                 setscreencolor(val, i, SWM_S_COLOR_FOCUS);
 543                         else if (!varmatch(var, "color_unfocus", &i))
 544                                 setscreencolor(val, i, SWM_S_COLOR_UNFOCUS);
 545                         else if (!strncmp(var, "cycle_empty", strlen("cycle_empty")))
 546                                 cycle_visible = atoi(val);
 547                         else if (!strncmp(var, "cycle_visible", strlen("cycle_visible")))
 548                                 cycle_visible = atoi(val);
 549                         else
 550                                 goto bad;
 551                         break;
 552
 553                 case 'd':
 554                         if (!strncmp(var, "dialog_ratio",
 555                             strlen("dialog_ratio"))) {
 556                                 dialog_ratio = atof(val);
 557                                 if (dialog_ratio > 1.0 || dialog_ratio <= .3)
 558                                         dialog_ratio = .6;
 559                         } else
 560                                 goto bad;
 561                         break;
 562
 563                 case 'r':
 564                         if (!strncmp(var, "region", strlen("region")))
 565                                 custom_region(val);
 566                         else
 567                                 goto bad;
 568                         break;
 569
 570                 case 's':
 571                         if (!strncmp(var, "spawn_term", strlen("spawn_term")))
 572                                 asprintf(&spawn_term[0], "%s", val);
 573                         else if (!strncmp(var, "screenshot_enabled",
 574                             strlen("screenshot_enabled")))
 575                                 ss_enabled = atoi(val);
 576                         else if (!strncmp(var, "screenshot_app",
 577                             strlen("screenshot_app")))
 578                                 asprintf(&spawn_screenshot[0], "%s", val);
 579                         else
 580                                 goto bad;
 581                         break;
 582
 583                 case 't':
 584                         if (!strncmp(var, "term_width", strlen("term_width")))
 585                                 term_width = atoi(val);
 586                         else
 587                                 goto bad;
 588                         break;
 589
 590                 default:
 591                         goto bad;
 592                 }
 593                 free(line);
 594         }
 595
 596         fclose(config);
 597         return (0);
 598
 599 bad:
 600         errx(1, "invalid conf file entry: %s=%s", var, val);
 601 }
 602
 603 void
 604 socket_setnonblock(int fd)
 605 {
 606         int                     flags;
 607
 608         if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
 609                 err(1, "fcntl F_GETFL");
 610         flags |= O_NONBLOCK;
 611         if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
 612                 err(1, "fcntl F_SETFL");
 613 }
 614
 615 void
 616 bar_print(struct swm_region *r, char *s)
 617 {
 618         XClearWindow(display, r->bar_window);
 619         XSetForeground(display, bar_gc, r->s->c[SWM_S_COLOR_BAR_FONT].color);
 620         XDrawString(display, r->bar_window, bar_gc, 4, bar_fs->ascent, s,
 621             strlen(s));
 622 }
 623
 624 void
 625 bar_extra_stop(void)
 626 {
 627         if (bar_pipe[0]) {
 628                 close(bar_pipe[0]);
 629                 bzero(bar_pipe, sizeof bar_pipe);
 630         }
 631         if (bar_pid) {
 632                 kill(bar_pid, SIGTERM);
 633                 bar_pid = 0;
 634         }
 635         strlcpy(bar_ext, "", sizeof bar_ext);
 636         bar_extra = 0;
 637 }
 638
 639 void
 640 bar_update(void)
 641 {
 642         time_t                  tmt;
 643         struct tm               tm;
 644         struct swm_region       *r;
 645         int                     i, x;
 646         size_t                  len;
 647         char                    s[SWM_BAR_MAX];
 648         char                    loc[SWM_BAR_MAX];
 649         char                    *b;
 650
 651         if (bar_enabled == 0)
 652                 return;
 653
 654         if (bar_extra && bar_extra_running) {
 655                 /* ignore short reads; it'll correct itself */
 656                 while ((b = fgetln(stdin, &len)) != NULL)
 657                         if (b && b[len - 1] == '\n') {
 658                                 b[len - 1] = '\0';
 659                                 strlcpy(bar_ext, b, sizeof bar_ext);
 660                         }
 661                 if (b == NULL && errno != EAGAIN) {
 662                         fprintf(stderr, "bar_extra failed: errno: %d %s\n",
 663                             errno, strerror(errno));
 664                         bar_extra_stop();
 665                 }
 666         } else
 667                 strlcpy(bar_ext, "", sizeof bar_ext);
 668
 669         time(&tmt);
 670         localtime_r(&tmt, &tm);
 671         strftime(s, sizeof s, "%a %b %d %R %Z %Y", &tm);
 672         for (i = 0; i < ScreenCount(display); i++) {
 673                 x = 1;
 674                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 675                         snprintf(loc, sizeof loc, "%s     %d:%d    %s    %s",
 676                             s, x++, r->ws->idx + 1, bar_ext, bar_vertext);
 677                         bar_print(r, loc);
 678                 }
 679         }
 680         XSync(display, False);
 681         alarm(bar_delay);
 682 }
 683
 684 void
 685 bar_signal(int sig)
 686 {
 687         bar_alarm = 1;
 688 }
 689
 690 void
 691 bar_toggle(struct swm_region *r, union arg *args)
 692 {
 693         struct swm_region       *tmpr;
 694         int                     i, j, sc = ScreenCount(display);
 695
 696         DNPRINTF(SWM_D_MISC, "bar_toggle\n");
 697
 698         if (bar_enabled) {
 699                 for (i = 0; i < sc; i++)
 700                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 701                                 XUnmapWindow(display, tmpr->bar_window);
 702         } else {
 703                 for (i = 0; i < sc; i++)
 704                         TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 705                                 XMapRaised(display, tmpr->bar_window);
 706         }
 707         bar_enabled = !bar_enabled;
 708         XSync(display, False);
 709         for (i = 0; i < sc; i++)
 710                 for (j = 0; j < SWM_WS_MAX; j++)
 711                         screens[i].ws[j].restack = 1;
 712
 713         stack();
 714         /* must be after stack */
 715         for (i = 0; i < sc; i++)
 716                 TAILQ_FOREACH(tmpr, &screens[i].rl, entry)
 717                         bar_update();
 718 }
 719
 720 void
 721 bar_refresh(void)
 722 {
 723         XSetWindowAttributes    wa;
 724         struct swm_region       *r;
 725         int                     i;
 726
 727         /* do this here because the conf file is in memory */
 728         if (bar_extra && bar_extra_running == 0 && bar_argv[0]) {
 729                 /* launch external status app */
 730                 bar_extra_running = 1;
 731                 if (pipe(bar_pipe) == -1)
 732                         err(1, "pipe error");
 733                 socket_setnonblock(bar_pipe[0]);
 734                 socket_setnonblock(bar_pipe[1]); /* XXX hmmm, really? */
 735                 if (dup2(bar_pipe[0], 0) == -1)
 736                         errx(1, "dup2");
 737                 if (dup2(bar_pipe[1], 1) == -1)
 738                         errx(1, "dup2");
 739                 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 740                         err(1, "could not disable SIGPIPE");
 741                 switch (bar_pid = fork()) {
 742                 case -1:
 743                         err(1, "cannot fork");
 744                         break;
 745                 case 0: /* child */
 746                         close(bar_pipe[0]);
 747                         execvp(bar_argv[0], bar_argv);
 748                         err(1, "%s external app failed", bar_argv[0]);
 749                         break;
 750                 default: /* parent */
 751                         close(bar_pipe[1]);
 752                         break;
 753                 }
 754         }
 755
 756         bzero(&wa, sizeof wa);
 757         for (i = 0; i < ScreenCount(display); i++)
 758                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
 759                         wa.border_pixel =
 760                             screens[i].c[SWM_S_COLOR_BAR_BORDER].color;
 761                         wa.background_pixel =
 762                             screens[i].c[SWM_S_COLOR_BAR].color;
 763                         XChangeWindowAttributes(display, r->bar_window,
 764                             CWBackPixel | CWBorderPixel, &wa);
 765                 }
 766         bar_update();
 767 }
 768
 769 void
 770 bar_setup(struct swm_region *r)
 771 {
 772         int                     i;
 773
 774         for (i = 0; bar_fonts[i] != NULL; i++) {
 775                 bar_fs = XLoadQueryFont(display, bar_fonts[i]);
 776                 if (bar_fs) {
 777                         bar_fidx = i;
 778                         break;
 779                 }
 780         }
 781         if (bar_fonts[i] == NULL)
 782                         errx(1, "couldn't load font");
 783         bar_height = bar_fs->ascent + bar_fs->descent + 3;
 784
 785         r->bar_window = XCreateSimpleWindow(display,
 786             r->s->root, X(r), Y(r), WIDTH(r) - 2, bar_height - 2,
 787             1, r->s->c[SWM_S_COLOR_BAR_BORDER].color,
 788             r->s->c[SWM_S_COLOR_BAR].color);
 789         bar_gc = XCreateGC(display, r->bar_window, 0, &bar_gcv);
 790         XSetFont(display, bar_gc, bar_fs->fid);
 791         XSelectInput(display, r->bar_window, VisibilityChangeMask);
 792         if (bar_enabled)
 793                 XMapRaised(display, r->bar_window);
 794         DNPRINTF(SWM_D_MISC, "bar_setup: bar_window %lu\n", r->bar_window);
 795
 796         if (signal(SIGALRM, bar_signal) == SIG_ERR)
 797                 err(1, "could not install bar_signal");
 798         bar_refresh();
 799 }
 800
 801 void
 802 version(struct swm_region *r, union arg *args)
 803 {
 804         bar_version = !bar_version;
 805         if (bar_version)
 806                 strlcpy(bar_vertext, cvstag, sizeof bar_vertext);
 807         else
 808                 strlcpy(bar_vertext, "", sizeof bar_vertext);
 809         bar_update();
 810 }
 811
 812 void
 813 config_win(struct ws_win *win)
 814 {
 815         XConfigureEvent         ce;
 816
 817         DNPRINTF(SWM_D_MISC, "config_win: win %lu x %d y %d w %d h %d\n",
 818             win->id, win->g.x, win->g.y, win->g.w, win->g.h);
 819         ce.type = ConfigureNotify;
 820         ce.display = display;
 821         ce.event = win->id;
 822         ce.window = win->id;
 823         ce.x = win->g.x;
 824         ce.y = win->g.y;
 825         ce.width = win->g.w;
 826         ce.height = win->g.h;
 827         ce.border_width = 1; /* XXX store this! */
 828         ce.above = None;
 829         ce.override_redirect = False;
 830         XSendEvent(display, win->id, False, StructureNotifyMask, (XEvent *)&ce);
 831 }
 832
 833 int
 834 count_win(struct workspace *ws, int count_transient)
 835 {
 836         struct ws_win           *win;
 837         int                     count = 0;
 838
 839         TAILQ_FOREACH(win, &ws->winlist, entry) {
 840                 if (count_transient == 0 && win->floating)
 841                         continue;
 842                 if (count_transient == 0 && win->transient)
 843                         continue;
 844                 count++;
 845         }
 846         DNPRINTF(SWM_D_MISC, "count_win: %d\n", count);
 847
 848         return (count);
 849 }
 850
 851 void
 852 quit(struct swm_region *r, union arg *args)
 853 {
 854         DNPRINTF(SWM_D_MISC, "quit\n");
 855         running = 0;
 856 }
 857
 858 void
 859 unmap_all(void)
 860 {
 861         struct ws_win           *win;
 862         int                     i, j;
 863
 864         for (i = 0; i < ScreenCount(display); i++)
 865                 for (j = 0; j < SWM_WS_MAX; j++)
 866                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 867                                 XUnmapWindow(display, win->id);
 868 }
 869
 870 void
 871 fake_keypress(struct ws_win *win, int keysym, int modifiers)
 872 {
 873         XKeyEvent event;
 874
 875         event.display = display;        /* Ignored, but what the hell */
 876         event.window = win->id;
 877         event.root = win->s->root;
 878         event.subwindow = None;
 879         event.time = CurrentTime;
 880         event.x = win->g.x;
 881         event.y = win->g.y;
 882         event.x_root = 1;
 883         event.y_root = 1;
 884         event.same_screen = True;
 885         event.keycode = XKeysymToKeycode(display, keysym);
 886         event.state = modifiers;
 887
 888         event.type = KeyPress;
 889         XSendEvent(event.display, event.window, True,
 890             KeyPressMask, (XEvent *)&event);
 891
 892         event.type = KeyRelease;
 893         XSendEvent(event.display, event.window, True,
 894             KeyPressMask, (XEvent *)&event);
 895
 896 }
 897
 898 void
 899 restart(struct swm_region *r, union arg *args)
 900 {
 901         DNPRINTF(SWM_D_MISC, "restart: %s\n", start_argv[0]);
 902
 903         /* disable alarm because the following code may not be interrupted */
 904         alarm(0);
 905         if (signal(SIGALRM, SIG_IGN) == SIG_ERR)
 906                 errx(1, "can't disable alarm");
 907
 908         bar_extra_stop();
 909         bar_extra = 1;
 910         unmap_all();
 911         XCloseDisplay(display);
 912         execvp(start_argv[0], start_argv);
 913         fprintf(stderr, "execvp failed\n");
 914         perror(" failed");
 915         quit(NULL, NULL);
 916 }
 917
 918 struct swm_region *
 919 root_to_region(Window root)
 920 {
 921         struct swm_region       *r = NULL;
 922         Window                  rr, cr;
 923         int                     i, x, y, wx, wy;
 924         unsigned int            mask;
 925
 926         for (i = 0; i < ScreenCount(display); i++)
 927                 if (screens[i].root == root)
 928                         break;
 929
 930         if (XQueryPointer(display, screens[i].root,
 931             &rr, &cr, &x, &y, &wx, &wy, &mask) != False) {
 932                 /* choose a region based on pointer location */
 933                 TAILQ_FOREACH(r, &screens[i].rl, entry)
 934                         if (x >= X(r) && x <= X(r) + WIDTH(r) &&
 935                             y >= Y(r) && y <= Y(r) + HEIGHT(r))
 936                                 break;
 937         }
 938
 939         if (r == NULL)
 940                 r = TAILQ_FIRST(&screens[i].rl);
 941
 942         return (r);
 943 }
 944
 945 struct ws_win *
 946 find_window(Window id)
 947 {
 948         struct ws_win           *win;
 949         int                     i, j;
 950
 951         for (i = 0; i < ScreenCount(display); i++)
 952                 for (j = 0; j < SWM_WS_MAX; j++)
 953                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry)
 954                                 if (id == win->id)
 955                                         return (win);
 956         return (NULL);
 957 }
 958
 959 void
 960 spawn(struct swm_region *r, union arg *args)
 961 {
 962         char                    *ret;
 963         int                     si;
 964
 965         DNPRINTF(SWM_D_MISC, "spawn: %s\n", args->argv[0]);
 966         /*
 967          * The double-fork construct avoids zombie processes and keeps the code
 968          * clean from stupid signal handlers.
 969          */
 970         if (fork() == 0) {
 971                 if (fork() == 0) {
 972                         if (display)
 973                                 close(ConnectionNumber(display));
 974                         setenv("LD_PRELOAD", SWM_LIB, 1);
 975                         if (asprintf(&ret, "%d", r->ws->idx)) {
 976                                 setenv("_SWM_WS", ret, 1);
 977                                 free(ret);
 978                         }
 979                         if (asprintf(&ret, "%d", getpid())) {
 980                                 setenv("_SWM_PID", ret, 1);
 981                                 free(ret);
 982                         }
 983                         setsid();
 984                         /* kill stdin, mplayer, ssh-add etc. need that */
 985                         si = open("/dev/null", O_RDONLY, 0);
 986                         if (si == -1)
 987                                 err(1, "open /dev/null");
 988                         if (dup2(si, 0) == -1)
 989                                 err(1, "dup2 /dev/null");
 990                         execvp(args->argv[0], args->argv);
 991                         fprintf(stderr, "execvp failed\n");
 992                         perror(" failed");
 993                 }
 994                 exit(0);
 995         }
 996         wait(0);
 997 }
 998
 999 void
1000 spawnterm(struct swm_region *r, union arg *args)
1001 {
1002         DNPRINTF(SWM_D_MISC, "spawnterm\n");
1003
1004         if (term_width)
1005                 setenv("_SWM_XTERM_FONTADJ", "", 1);
1006         spawn(r, args);
1007 }
1008
1009 void
1010 spawnmenu(struct swm_region *r, union arg *args)
1011 {
1012         DNPRINTF(SWM_D_MISC, "spawnmenu\n");
1013
1014         spawn_menu[SWM_MENU_FN] = bar_fonts[bar_fidx];
1015         spawn_menu[SWM_MENU_NB] = r->s->c[SWM_S_COLOR_BAR].name;
1016         spawn_menu[SWM_MENU_NF] = r->s->c[SWM_S_COLOR_BAR_FONT].name;
1017         spawn_menu[SWM_MENU_SB] = r->s->c[SWM_S_COLOR_BAR_BORDER].name;
1018         spawn_menu[SWM_MENU_SF] = r->s->c[SWM_S_COLOR_BAR].name;
1019
1020         spawn(r, args);
1021 }
1022
1023 void
1024 unfocus_all(void)
1025 {
1026         struct ws_win           *win;
1027         int                     i, j;
1028
1029         DNPRINTF(SWM_D_FOCUS, "unfocus_all:\n");
1030
1031         for (i = 0; i < ScreenCount(display); i++)
1032                 for (j = 0; j < SWM_WS_MAX; j++)
1033                         TAILQ_FOREACH(win, &screens[i].ws[j].winlist, entry) {
1034                                 if (win->ws->r == NULL)
1035                                         continue;
1036                                 grabbuttons(win, 0);
1037                                 XSetWindowBorder(display, win->id,
1038                                     win->ws->r->s->c[SWM_S_COLOR_UNFOCUS].color);
1039                                 win->got_focus = 0;
1040                                 win->ws->focus = NULL;
1041                                 cur_focus = NULL;
1042                         }
1043 }
1044
1045 void
1046 focus_win(struct ws_win *win)
1047 {
1048         DNPRINTF(SWM_D_FOCUS, "focus_win: id: %lu\n", win ? win->id : 0);
1049
1050         if (win == NULL)
1051                 return;
1052
1053         if (win->ws->focus != win && win->ws->focus != NULL)
1054                 win->ws->focus_prev = win->ws->focus;
1055
1056         unfocus_all();
1057         win->ws->focus = win;
1058         if (win->ws->r != NULL) {
1059                 cur_focus = win;
1060                 if (!win->got_focus) {
1061                         XSetWindowBorder(display, win->id,
1062                             win->ws->r->s->c[SWM_S_COLOR_FOCUS].color);
1063                         grabbuttons(win, 1);
1064                 }
1065                 win->got_focus = 1;
1066                 XSetInputFocus(display, win->id,
1067                     RevertToPointerRoot, CurrentTime);
1068         }
1069 }
1070
1071 void
1072 switchws(struct swm_region *r, union arg *args)
1073 {
1074         int                     wsid = args->id;
1075         struct swm_region       *this_r, *other_r;
1076         struct ws_win           *win;
1077         struct workspace        *new_ws, *old_ws;
1078
1079         this_r = r;
1080         old_ws = this_r->ws;
1081         new_ws = &this_r->s->ws[wsid];
1082
1083         DNPRINTF(SWM_D_WS, "switchws screen[%d]:%dx%d+%d+%d: "
1084             "%d -> %d\n", r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r),
1085             old_ws->idx, wsid);
1086
1087         if (new_ws == old_ws)
1088                 return;
1089
1090         other_r = new_ws->r;
1091         if (!other_r) {
1092                 /* if the other workspace is hidden, switch windows */
1093                 /* map new window first to prevent ugly blinking */
1094                 old_ws->r = NULL;
1095                 old_ws->restack = 1;
1096
1097                 TAILQ_FOREACH(win, &new_ws->winlist, entry)
1098                         XMapRaised(display, win->id);
1099
1100                 TAILQ_FOREACH(win, &old_ws->winlist, entry)
1101                         XUnmapWindow(display, win->id);
1102         } else {
1103                 other_r->ws = old_ws;
1104                 old_ws->r = other_r;
1105         }
1106         this_r->ws = new_ws;
1107         new_ws->r = this_r;
1108
1109         ignore_enter = 1;
1110         /* set focus */
1111         if (new_ws->focus)
1112                 focus_win(new_ws->focus);
1113         stack();
1114         bar_update();
1115 }
1116
1117 void
1118 cyclews(struct swm_region *r, union arg *args)
1119 {
1120         union                   arg a;
1121         struct swm_screen       *s = r->s;
1122
1123         DNPRINTF(SWM_D_WS, "cyclews id %d "
1124             "in screen[%d]:%dx%d+%d+%d ws %d\n", args->id,
1125             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1126
1127         a.id = r->ws->idx;
1128         do {
1129                 switch (args->id) {
1130                 case SWM_ARG_ID_CYCLEWS_UP:
1131                         if (a.id < SWM_WS_MAX - 1)
1132                                 a.id++;
1133                         else
1134                                 a.id = 0;
1135                         break;
1136                 case SWM_ARG_ID_CYCLEWS_DOWN:
1137                         if (a.id > 0)
1138                                 a.id--;
1139                         else
1140                                 a.id = SWM_WS_MAX - 1;
1141                         break;
1142                 default:
1143                         return;
1144                 };
1145
1146                 if (cycle_empty == 0 && TAILQ_EMPTY(&s->ws[a.id].winlist))
1147                         continue;
1148                 if (cycle_visible == 0 && s->ws[a.id].r != NULL)
1149                         continue;
1150
1151                 switchws(r, &a);
1152         } while (a.id != r->ws->idx);
1153 }
1154
1155 void
1156 cyclescr(struct swm_region *r, union arg *args)
1157 {
1158         struct swm_region       *rr;
1159         int                     i;
1160
1161         i = r->s->idx;
1162         switch (args->id) {
1163         case SWM_ARG_ID_CYCLESC_UP:
1164                 rr = TAILQ_NEXT(r, entry);
1165                 if (rr == NULL)
1166                         rr = TAILQ_FIRST(&screens[i].rl);
1167                 break;
1168         case SWM_ARG_ID_CYCLESC_DOWN:
1169                 rr = TAILQ_PREV(r, swm_region_list, entry);
1170                 if (rr == NULL)
1171                         rr = TAILQ_LAST(&screens[i].rl, swm_region_list);
1172                 break;
1173         default:
1174                 return;
1175         };
1176         unfocus_all();
1177         XSetInputFocus(display, PointerRoot, RevertToPointerRoot, CurrentTime);
1178         XWarpPointer(display, None, rr->s[i].root, 0, 0, 0, 0, rr->g.x,
1179             rr->g.y + bar_enabled ? bar_height : 0);
1180 }
1181
1182 void
1183 swapwin(struct swm_region *r, union arg *args)
1184 {
1185         struct ws_win           *target, *source;
1186         struct ws_win_list      *wl;
1187
1188
1189         DNPRINTF(SWM_D_WS, "swapwin id %d "
1190             "in screen %d region %dx%d+%d+%d ws %d\n", args->id,
1191             r->s->idx, WIDTH(r), HEIGHT(r), X(r), Y(r), r->ws->idx);
1192         if (cur_focus == NULL)
1193                 return;
1194
1195         source = cur_focus;
1196         wl = &source->ws->winlist;
1197
1198         switch (args->id) {
1199         case SWM_ARG_ID_SWAPPREV:
1200                 target = TAILQ_PREV(source, ws_win_list, entry);
1201                 TAILQ_REMOVE(wl, cur_focus, entry);
1202                 if (target == NULL)
1203                         TAILQ_INSERT_TAIL(wl, source, entry);
1204                 else
1205                         TAILQ_INSERT_BEFORE(target, source, entry);
1206                 break;
1207         case SWM_ARG_ID_SWAPNEXT:
1208                 target = TAILQ_NEXT(source, entry);
1209                 TAILQ_REMOVE(wl, source, entry);
1210                 if (target == NULL)
1211                         TAILQ_INSERT_HEAD(wl, source, entry);
1212                 else
1213                         TAILQ_INSERT_AFTER(wl, target, source, entry);
1214                 break;
1215         case SWM_ARG_ID_SWAPMAIN:
1216                 target = TAILQ_FIRST(wl);
1217                 if (target == source) {
1218                         if (source->ws->focus_prev != NULL &&
1219                             source->ws->focus_prev != target)
1220
1221                                 source = source->ws->focus_prev;
1222                         else
1223                                 return;
1224                 }
1225                 source->ws->focus_prev = target;
1226                 TAILQ_REMOVE(wl, target, entry);
1227                 TAILQ_INSERT_BEFORE(source, target, entry);
1228                 TAILQ_REMOVE(wl, source, entry);
1229                 TAILQ_INSERT_HEAD(wl, source, entry);
1230                 break;
1231         default:
1232                 DNPRINTF(SWM_D_MOVE, "invalid id: %d\n", args->id);
1233                 return;
1234         }
1235
1236         ignore_enter = 1;
1237         stack();
1238 }
1239
1240 void
1241 focus(struct swm_region *r, union arg *args)
1242 {
1243         struct ws_win           *winfocus, *winlostfocus;
1244         struct ws_win_list      *wl;
1245
1246         DNPRINTF(SWM_D_FOCUS, "focus: id %d\n", args->id);
1247         if (cur_focus == NULL)
1248                 return;
1249
1250         wl = &cur_focus->ws->winlist;
1251
1252         winlostfocus = cur_focus;
1253
1254         switch (args->id) {
1255         case SWM_ARG_ID_FOCUSPREV:
1256                 winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
1257                 if (winfocus == NULL)
1258                         winfocus = TAILQ_LAST(wl, ws_win_list);
1259                 break;
1260
1261         case SWM_ARG_ID_FOCUSNEXT:
1262                 winfocus = TAILQ_NEXT(cur_focus, entry);
1263                 if (winfocus == NULL)
1264                         winfocus = TAILQ_FIRST(wl);
1265                 break;
1266
1267         case SWM_ARG_ID_FOCUSMAIN:
1268                 winfocus = TAILQ_FIRST(wl);
1269                 break;
1270
1271         default:
1272                 return;
1273         }
1274
1275         if (winfocus == winlostfocus || winfocus == NULL)
1276                 return;
1277
1278         XMapRaised(display, winfocus->id);
1279         focus_win(winfocus);
1280         XSync(display, False);
1281 }
1282
1283 void
1284 cycle_layout(struct swm_region *r, union arg *args)
1285 {
1286         struct workspace        *ws = r->ws;
1287
1288         DNPRINTF(SWM_D_EVENT, "cycle_layout: workspace: %d\n", ws->idx);
1289
1290         ws->cur_layout++;
1291         if (ws->cur_layout->l_stack == NULL)
1292                 ws->cur_layout = &layouts[0];
1293         ignore_enter = 1;
1294         stack();
1295 }
1296
1297 void
1298 stack_config(struct swm_region *r, union arg *args)
1299 {
1300         struct workspace        *ws = r->ws;
1301
1302         DNPRINTF(SWM_D_STACK, "stack_config for workspace %d (id %d\n",
1303             args->id, ws->idx);
1304
1305         if (ws->cur_layout->l_config != NULL)
1306                 ws->cur_layout->l_config(ws, args->id);
1307
1308         if (args->id != SWM_ARG_ID_STACKINIT);
1309                 stack();
1310 }
1311
1312 void
1313 stack(void) {
1314         struct swm_geometry     g;
1315         struct swm_region       *r;
1316         int                     i, j;
1317
1318         DNPRINTF(SWM_D_STACK, "stack\n");
1319
1320         for (i = 0; i < ScreenCount(display); i++) {
1321                 j = 0;
1322                 TAILQ_FOREACH(r, &screens[i].rl, entry) {
1323                         DNPRINTF(SWM_D_STACK, "stacking workspace %d "
1324                             "(screen %d, region %d)\n", r->ws->idx, i, j++);
1325
1326                         /* start with screen geometry, adjust for bar */
1327                         g = r->g;
1328                         g.w -= 2;
1329                         g.h -= 2;
1330                         if (bar_enabled) {
1331                                 g.y += bar_height;
1332                                 g.h -= bar_height;
1333                         }
1334
1335                         r->ws->restack = 0;
1336                         r->ws->cur_layout->l_stack(r->ws, &g);
1337                 }
1338         }
1339         if (font_adjusted)
1340                 font_adjusted--;
1341         XSync(display, False);
1342 }
1343
1344 void
1345 stack_floater(struct ws_win *win, struct swm_region *r)
1346 {
1347         unsigned int            mask;
1348         XWindowChanges          wc;
1349
1350         bzero(&wc, sizeof wc);
1351         mask = CWX | CWY | CWBorderWidth | CWWidth | CWHeight;
1352         wc.border_width = 1;
1353         if (win->transient && (win->quirks & SWM_Q_TRANSSZ)) {
1354                 win->g.w = (double)WIDTH(r) * dialog_ratio;
1355                 win->g.h = (double)HEIGHT(r) * dialog_ratio;
1356         }
1357         wc.width = win->g.w;
1358         wc.height = win->g.h;
1359         if (win->manual) {
1360                 wc.x = win->g.x;
1361                 wc.y = win->g.y;
1362         } else {
1363                 wc.x = (WIDTH(r) - win->g.w) / 2;
1364                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1365         }
1366
1367         DNPRINTF(SWM_D_STACK, "stack_floater: win %lu x %d y %d w %d h %d\n",
1368             win->id, wc.x, wc.y, wc.width, wc.height);
1369
1370         XConfigureWindow(display, win->id, mask, &wc);
1371 }
1372
1373 /*
1374  * Send keystrokes to terminal to decrease/increase the font size as the
1375  * window size changes.
1376  */
1377 void
1378 adjust_font(struct ws_win *win)
1379 {
1380         if (!(win->quirks & SWM_Q_XTERM_FONTADJ) ||
1381             win->floating || win->transient)
1382                 return;
1383
1384         if (win->sh.width_inc && win->last_inc != win->sh.width_inc &&
1385             win->g.w / win->sh.width_inc < term_width &&
1386             win->font_steps < SWM_MAX_FONT_STEPS) {
1387                 win->font_size_boundary[win->font_steps] =
1388                     (win->sh.width_inc * term_width) + win->sh.base_width;
1389                 win->font_steps++;
1390                 font_adjusted++;
1391                 win->last_inc = win->sh.width_inc;
1392                 fake_keypress(win, XK_KP_Subtract, ShiftMask);
1393         } else if (win->font_steps && win->last_inc != win->sh.width_inc &&
1394             win->g.w > win->font_size_boundary[win->font_steps - 1]) {
1395                 win->font_steps--;
1396                 font_adjusted++;
1397                 win->last_inc = win->sh.width_inc;
1398                 fake_keypress(win, XK_KP_Add, ShiftMask);
1399         }
1400 }
1401
1402 #define SWAPXY(g)       do {                            \
1403         int tmp;                                        \
1404         tmp = (g)->y; (g)->y = (g)->x; (g)->x = tmp;    \
1405         tmp = (g)->h; (g)->h = (g)->w; (g)->w = tmp;    \
1406 } while (0)
1407 void
1408 stack_master(struct workspace *ws, struct swm_geometry *g, int rot, int flip)
1409 {
1410         XWindowChanges          wc;
1411         struct swm_geometry     win_g, r_g = *g;
1412         struct ws_win           *win, *winfocus;
1413         int                     i, j, s, w_inc, h_inc, w_base, h_base, stacks;
1414         int                     hrh, extra, h_slice, last_h = 0;
1415         int                     split, colno, winno, mwin, msize, mscale;
1416         int                     remain, missing, v_slice;;
1417         unsigned int            mask;
1418
1419         DNPRINTF(SWM_D_STACK, "stack_master: workspace: %d\n rot=%s flip=%s",
1420             ws->idx, rot ? "yes" : "no", flip ? "yes" : "no");
1421
1422         if ((winno = count_win(ws, 0)) == 0)
1423                 return;
1424
1425         if (ws->focus == NULL)
1426                 ws->focus = TAILQ_FIRST(&ws->winlist);
1427         winfocus = cur_focus ? cur_focus : ws->focus;
1428
1429         win = TAILQ_FIRST(&ws->winlist);
1430         if (rot) {
1431                 w_inc = win->sh.width_inc;
1432                 w_base = win->sh.base_width;
1433                 mwin = ws->l_state.horizontal_mwin;
1434                 mscale = ws->l_state.horizontal_msize;
1435                 stacks = ws->l_state.horizontal_stacks;
1436                 SWAPXY(&r_g);
1437         } else {
1438                 w_inc = win->sh.height_inc;
1439                 w_base = win->sh.base_height;
1440                 mwin = ws->l_state.vertical_mwin;
1441                 mscale = ws->l_state.vertical_msize;
1442                 stacks = ws->l_state.vertical_stacks;
1443         }
1444         win_g = r_g;
1445
1446         if (stacks > winno - mwin)
1447                 stacks = winno - mwin;
1448         if (stacks < 1)
1449                 stacks = 1;
1450
1451         h_slice = r_g.h / SWM_H_SLICE;
1452         if (mwin && winno > mwin) {
1453                 v_slice = r_g.w / SWM_V_SLICE;
1454
1455                 split = mwin;
1456                 colno = split;
1457                 win_g.w = v_slice * mscale;
1458
1459                 if (w_inc > 1 && w_inc < v_slice) {
1460                         /* adjust for window's requested size increment */
1461                         remain = (win_g.w - w_base) % w_inc;
1462                         missing = w_inc - remain;
1463
1464                         if (missing <= extra || j == 0) {
1465                                 extra -= missing;
1466                                 win_g.w += missing;
1467                         } else {
1468                                 win_g.w -= remain;
1469                                 extra += remain;
1470                         }
1471                 }
1472
1473                 msize = win_g.w;
1474                 if (flip)
1475                         win_g.x += r_g.w - msize;
1476         } else {
1477                 msize = -2;
1478                 colno = split = winno / stacks;
1479                 win_g.w = ((r_g.w - (stacks * 2) + 2) / stacks);
1480         }
1481         hrh = r_g.h / colno;
1482         extra = r_g.h - (colno * hrh);
1483         win_g.h = hrh - 2;
1484
1485         /*  stack all the tiled windows */
1486         i = j = 0, s = stacks;
1487         TAILQ_FOREACH(win, &ws->winlist, entry) {
1488                 if (win->transient != 0 || win->floating != 0)
1489                         continue;
1490
1491                 if (split && i == split) {
1492                         colno = (winno - mwin) / stacks;
1493                         if (s <= (winno - mwin) % stacks)
1494                                 colno++;
1495                         split = split + colno;
1496                         hrh = (r_g.h / colno);
1497                         extra = r_g.h - (colno * hrh);
1498                         if (flip)
1499                                 win_g.x = r_g.x;
1500                         else
1501                                 win_g.x += win_g.w + 2;
1502                         win_g.w = (r_g.w - msize - (stacks * 2)) / stacks;
1503                         if (s == 1)
1504                                 win_g.w += (r_g.w - msize - (stacks * 2)) %
1505                                     stacks;
1506                         s--;
1507                         j = 0;
1508                 }
1509                 win_g.h = hrh - 2;
1510                 if (rot) {
1511                         h_inc = win->sh.width_inc;
1512                         h_base = win->sh.base_width;
1513                 } else {
1514                         h_inc = win->sh.height_inc;
1515                         h_base = win->sh.base_height;
1516                 }
1517                 if (j == colno - 1) {
1518                         win_g.h = hrh + extra;
1519                 } else if (h_inc > 1 && h_inc < h_slice) {
1520                         /* adjust for window's requested size increment */
1521                         remain = (win_g.h - h_base) % h_inc;
1522                         missing = h_inc - remain;
1523
1524                         if (missing <= extra || j == 0) {
1525                                 extra -= missing;
1526                                 win_g.h += missing;
1527                         } else {
1528                                 win_g.h -= remain;
1529                                 extra += remain;
1530                         }
1531                 }
1532
1533                 if (j == 0)
1534                         win_g.y = r_g.y;
1535                 else
1536                         win_g.y += last_h + 2;
1537
1538                 bzero(&wc, sizeof wc);
1539                 wc.border_width = 1;
1540                 if (rot) {
1541                         win->g.x = wc.x = win_g.y;
1542                         win->g.y = wc.y = win_g.x;
1543                         win->g.w = wc.width = win_g.h;
1544                         win->g.h = wc.height = win_g.w;
1545                 } else {
1546                         win->g.x = wc.x = win_g.x;
1547                         win->g.y = wc.y = win_g.y;
1548                         win->g.w = wc.width = win_g.w;
1549                         win->g.h = wc.height = win_g.h;
1550                 }
1551                 adjust_font(win);
1552                 mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1553                 XConfigureWindow(display, win->id, mask, &wc);
1554                 XMapRaised(display, win->id);
1555
1556                 last_h = win_g.h;
1557                 i++;
1558                 j++;
1559         }
1560
1561         /* now, stack all the floaters and transients */
1562         TAILQ_FOREACH(win, &ws->winlist, entry) {
1563                 if (win->transient == 0 && win->floating == 0)
1564                         continue;
1565
1566                 stack_floater(win, ws->r);
1567                 XMapRaised(display, win->id);
1568         }
1569
1570         if (winfocus)
1571                 focus_win(winfocus); /* has to be done outside of the loop */
1572 }
1573
1574 void
1575 vertical_config(struct workspace *ws, int id)
1576 {
1577         DNPRINTF(SWM_D_STACK, "vertical_resize: workspace: %d\n", ws->idx);
1578
1579         switch (id) {
1580         case SWM_ARG_ID_STACKRESET:
1581         case SWM_ARG_ID_STACKINIT:
1582                 ws->l_state.vertical_msize = SWM_V_SLICE / 2;
1583                 ws->l_state.vertical_mwin = 1;
1584                 ws->l_state.vertical_stacks = 1;
1585                 break;
1586         case SWM_ARG_ID_MASTERSHRINK:
1587                 if (ws->l_state.vertical_msize > 1)
1588                         ws->l_state.vertical_msize--;
1589                 break;
1590         case SWM_ARG_ID_MASTERGROW:
1591                 if (ws->l_state.vertical_msize < SWM_V_SLICE - 1)
1592                         ws->l_state.vertical_msize++;
1593                 break;
1594         case SWM_ARG_ID_MASTERADD:
1595                 ws->l_state.vertical_mwin++;
1596                 break;
1597         case SWM_ARG_ID_MASTERDEL:
1598                 if (ws->l_state.vertical_mwin > 0)
1599                         ws->l_state.vertical_mwin--;
1600                 break;
1601         case SWM_ARG_ID_STACKINC:
1602                 ws->l_state.vertical_stacks++;
1603                 break;
1604         case SWM_ARG_ID_STACKDEC:
1605                 if (ws->l_state.vertical_stacks > 1)
1606                         ws->l_state.vertical_stacks--;
1607                 break;
1608         default:
1609                 return;
1610         }
1611 }
1612
1613 void
1614 vertical_stack(struct workspace *ws, struct swm_geometry *g)
1615 {
1616         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1617
1618         stack_master(ws, g, 0, 0);
1619 }
1620
1621 void
1622 horizontal_config(struct workspace *ws, int id)
1623 {
1624         DNPRINTF(SWM_D_STACK, "horizontal_config: workspace: %d\n", ws->idx);
1625
1626         switch (id) {
1627         case SWM_ARG_ID_STACKRESET:
1628         case SWM_ARG_ID_STACKINIT:
1629                 ws->l_state.horizontal_mwin = 1;
1630                 ws->l_state.horizontal_msize = SWM_H_SLICE / 2;
1631                 ws->l_state.horizontal_stacks = 1;
1632                 break;
1633         case SWM_ARG_ID_MASTERSHRINK:
1634                 if (ws->l_state.horizontal_msize > 1)
1635                         ws->l_state.horizontal_msize--;
1636                 break;
1637         case SWM_ARG_ID_MASTERGROW:
1638                 if (ws->l_state.horizontal_msize < SWM_H_SLICE - 1)
1639                         ws->l_state.horizontal_msize++;
1640                 break;
1641         case SWM_ARG_ID_MASTERADD:
1642                 ws->l_state.horizontal_mwin++;
1643                 break;
1644         case SWM_ARG_ID_MASTERDEL:
1645                 if (ws->l_state.horizontal_mwin > 0)
1646                         ws->l_state.horizontal_mwin--;
1647                 break;
1648         case SWM_ARG_ID_STACKINC:
1649                 ws->l_state.horizontal_stacks++;
1650                 break;
1651         case SWM_ARG_ID_STACKDEC:
1652                 if (ws->l_state.horizontal_stacks > 1)
1653                         ws->l_state.horizontal_stacks--;
1654                 break;
1655         default:
1656                 return;
1657         }
1658 }
1659
1660 void
1661 horizontal_stack(struct workspace *ws, struct swm_geometry *g)
1662 {
1663         DNPRINTF(SWM_D_STACK, "vertical_stack: workspace: %d\n", ws->idx);
1664
1665         stack_master(ws, g, 1, 0);
1666 }
1667
1668 /* fullscreen view */
1669 void
1670 max_stack(struct workspace *ws, struct swm_geometry *g) {
1671         XWindowChanges          wc;
1672         struct swm_geometry     gg = *g;
1673         struct ws_win           *win, *winfocus;
1674         unsigned int            mask;
1675
1676         DNPRINTF(SWM_D_STACK, "max_stack: workspace: %d\n", ws->idx);
1677
1678         if (count_win(ws, 0) == 0)
1679                 return;
1680
1681         if (ws->focus == NULL)
1682                 ws->focus = TAILQ_FIRST(&ws->winlist);
1683         winfocus = cur_focus ? cur_focus : ws->focus;
1684
1685         TAILQ_FOREACH(win, &ws->winlist, entry) {
1686                 if (win->transient != 0 || win->floating != 0) {
1687                         if (win == ws->focus) {
1688                                 /* XXX maximize? */
1689                                 stack_floater(win, ws->r);
1690                                 XMapRaised(display, win->id);
1691                         } else
1692                                 XUnmapWindow(display, win->id);
1693                 } else {
1694                         bzero(&wc, sizeof wc);
1695                         wc.border_width = 1;
1696                         win->g.x = wc.x = gg.x;
1697                         win->g.y = wc.y = gg.y;
1698                         win->g.w = wc.width = gg.w;
1699                         win->g.h = wc.height = gg.h;
1700                         mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
1701                         XConfigureWindow(display, win->id, mask, &wc);
1702
1703                         if (win == ws->focus) {
1704                                 XMapRaised(display, win->id);
1705                         } else
1706                                 XUnmapWindow(display, win->id);
1707                 }
1708         }
1709
1710         if (winfocus)
1711                 focus_win(winfocus); /* has to be done outside of the loop */
1712 }
1713
1714 void
1715 send_to_ws(struct swm_region *r, union arg *args)
1716 {
1717         int                     wsid = args->id;
1718         struct ws_win           *win = cur_focus;
1719         struct workspace        *ws, *nws;
1720         Atom                    ws_idx_atom = 0;
1721         unsigned char           ws_idx_str[SWM_PROPLEN];
1722
1723         if (win == NULL)
1724                 return;
1725
1726         DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
1727
1728         ws = win->ws;
1729         nws = &win->s->ws[wsid];
1730
1731         XUnmapWindow(display, win->id);
1732
1733         /* find a window to focus */
1734         ws->focus = TAILQ_PREV(win, ws_win_list, entry);
1735         if (ws->focus == NULL)
1736                 ws->focus = TAILQ_FIRST(&ws->winlist);
1737         if (ws->focus == win)
1738                 ws->focus = NULL;
1739
1740         TAILQ_REMOVE(&ws->winlist, win, entry);
1741
1742         TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
1743         win->ws = nws;
1744
1745         /* Try to update the window's workspace property */
1746         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
1747         if (ws_idx_atom &&
1748             snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
1749                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
1750                     ws_idx_str);
1751                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
1752                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
1753         }
1754
1755         if (count_win(nws, 1) == 1)
1756                 nws->focus = win;
1757         ws->restack = 1;
1758         nws->restack = 1;
1759
1760         stack();
1761 }
1762
1763 void
1764 wkill(struct swm_region *r, union arg *args)
1765 {
1766         DNPRINTF(SWM_D_MISC, "wkill\n");
1767         if(r->ws->focus != NULL)
1768                 XKillClient(display, r->ws->focus->id);
1769 }
1770
1771 void
1772 screenshot(struct swm_region *r, union arg *args)
1773 {
1774         union arg                       a;
1775
1776         DNPRINTF(SWM_D_MISC, "screenshot\n");
1777
1778         if (ss_enabled == 0)
1779                 return;
1780
1781         switch (args->id) {
1782         case SWM_ARG_ID_SS_ALL:
1783                 spawn_screenshot[1] = "full";
1784                 break;
1785         case SWM_ARG_ID_SS_WINDOW:
1786                 spawn_screenshot[1] = "window";
1787                 break;
1788         default:
1789                 return;
1790         }
1791         a.argv = spawn_screenshot;
1792         spawn(r, &a);
1793 }
1794
1795 void
1796 floating_toggle(struct swm_region *r, union arg *args)
1797 {
1798         struct ws_win   *win = cur_focus;
1799
1800         if (win == NULL)
1801                 return;
1802
1803         win->floating = !win->floating;
1804         win->manual = 0;
1805         stack();
1806         focus_win(win);
1807 }
1808
1809 /* key definitions */
1810 struct key {
1811         unsigned int            mod;
1812         KeySym                  keysym;
1813         void                    (*func)(struct swm_region *r, union arg *);
1814         union arg               args;
1815 } keys[] = {
1816         /* modifier             key     function                argument */
1817         { MODKEY,               XK_space,       cycle_layout,   {0} },
1818         { MODKEY | ShiftMask,   XK_space,       stack_config,   {.id = SWM_ARG_ID_STACKRESET} },
1819         { MODKEY,               XK_h,           stack_config,   {.id = SWM_ARG_ID_MASTERSHRINK} },
1820         { MODKEY,               XK_l,           stack_config,   {.id = SWM_ARG_ID_MASTERGROW} },
1821         { MODKEY,               XK_comma,       stack_config,   {.id = SWM_ARG_ID_MASTERADD} },
1822         { MODKEY,               XK_period,      stack_config,   {.id = SWM_ARG_ID_MASTERDEL} },
1823         { MODKEY | ShiftMask,   XK_comma,       stack_config,   {.id = SWM_ARG_ID_STACKINC} },
1824         { MODKEY | ShiftMask,   XK_period,      stack_config,   {.id = SWM_ARG_ID_STACKDEC} },
1825         { MODKEY,               XK_Return,      swapwin,        {.id = SWM_ARG_ID_SWAPMAIN} },
1826         { MODKEY,               XK_j,           focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1827         { MODKEY,               XK_k,           focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1828         { MODKEY | ShiftMask,   XK_j,           swapwin,        {.id = SWM_ARG_ID_SWAPNEXT} },
1829         { MODKEY | ShiftMask,   XK_k,           swapwin,        {.id = SWM_ARG_ID_SWAPPREV} },
1830         { MODKEY | ShiftMask,   XK_Return,      spawnterm,      {.argv = spawn_term} },
1831         { MODKEY,               XK_p,           spawnmenu,      {.argv = spawn_menu} },
1832         { MODKEY | ShiftMask,   XK_q,           quit,           {0} },
1833         { MODKEY,               XK_q,           restart,        {0} },
1834         { MODKEY,               XK_m,           focus,          {.id = SWM_ARG_ID_FOCUSMAIN} },
1835         { MODKEY,               XK_1,           switchws,       {.id = 0} },
1836         { MODKEY,               XK_2,           switchws,       {.id = 1} },
1837         { MODKEY,               XK_3,           switchws,       {.id = 2} },
1838         { MODKEY,               XK_4,           switchws,       {.id = 3} },
1839         { MODKEY,               XK_5,           switchws,       {.id = 4} },
1840         { MODKEY,               XK_6,           switchws,       {.id = 5} },
1841         { MODKEY,               XK_7,           switchws,       {.id = 6} },
1842         { MODKEY,               XK_8,           switchws,       {.id = 7} },
1843         { MODKEY,               XK_9,           switchws,       {.id = 8} },
1844         { MODKEY,               XK_0,           switchws,       {.id = 9} },
1845         { MODKEY,               XK_Right,       cyclews,        {.id = SWM_ARG_ID_CYCLEWS_UP} },
1846         { MODKEY,               XK_Left,        cyclews,        {.id = SWM_ARG_ID_CYCLEWS_DOWN} },
1847         { MODKEY | ShiftMask,   XK_Right,       cyclescr,       {.id = SWM_ARG_ID_CYCLESC_UP} },
1848         { MODKEY | ShiftMask,   XK_Left,        cyclescr,       {.id = SWM_ARG_ID_CYCLESC_DOWN} },
1849         { MODKEY | ShiftMask,   XK_1,           send_to_ws,     {.id = 0} },
1850         { MODKEY | ShiftMask,   XK_2,           send_to_ws,     {.id = 1} },
1851         { MODKEY | ShiftMask,   XK_3,           send_to_ws,     {.id = 2} },
1852         { MODKEY | ShiftMask,   XK_4,           send_to_ws,     {.id = 3} },
1853         { MODKEY | ShiftMask,   XK_5,           send_to_ws,     {.id = 4} },
1854         { MODKEY | ShiftMask,   XK_6,           send_to_ws,     {.id = 5} },
1855         { MODKEY | ShiftMask,   XK_7,           send_to_ws,     {.id = 6} },
1856         { MODKEY | ShiftMask,   XK_8,           send_to_ws,     {.id = 7} },
1857         { MODKEY | ShiftMask,   XK_9,           send_to_ws,     {.id = 8} },
1858         { MODKEY | ShiftMask,   XK_0,           send_to_ws,     {.id = 9} },
1859         { MODKEY,               XK_b,           bar_toggle,     {0} },
1860         { MODKEY,               XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSNEXT} },
1861         { MODKEY | ShiftMask,   XK_Tab,         focus,          {.id = SWM_ARG_ID_FOCUSPREV} },
1862         { MODKEY | ShiftMask,   XK_x,           wkill,          {0} },
1863         { MODKEY,               XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_ALL} },
1864         { MODKEY | ShiftMask,   XK_s,           screenshot,     {.id = SWM_ARG_ID_SS_WINDOW} },
1865         { MODKEY,               XK_t,           floating_toggle,{0} },
1866         { MODKEY | ShiftMask,   XK_v,           version,        {0} },
1867         { MODKEY | ShiftMask,   XK_Delete,      spawn,          {.argv = spawn_lock} },
1868         { MODKEY | ShiftMask,   XK_i,           spawn,          {.argv = spawn_initscr} },
1869 };
1870
1871 void
1872 resize_window(struct ws_win *win, int center)
1873 {
1874         unsigned int            mask;
1875         XWindowChanges          wc;
1876         struct swm_region       *r;
1877
1878         r = root_to_region(win->wa.root);
1879         bzero(&wc, sizeof wc);
1880         mask = CWBorderWidth | CWWidth | CWHeight;
1881         wc.border_width = 1;
1882         wc.width = win->g.w;
1883         wc.height = win->g.h;
1884         if (center == SWM_ARG_ID_CENTER) {
1885                 wc.x = (WIDTH(r) - win->g.w) / 2;
1886                 wc.y = (HEIGHT(r) - win->g.h) / 2;
1887                 mask |= CWX | CWY;
1888         }
1889
1890         DNPRINTF(SWM_D_STACK, "resize_window: win %lu x %d y %d w %d h %d\n",
1891             win->id, wc.x, wc.y, wc.width, wc.height);
1892
1893         XConfigureWindow(display, win->id, mask, &wc);
1894         config_win(win);
1895 }
1896
1897 void
1898 resize(struct ws_win *win, union arg *args)
1899 {
1900         XEvent                  ev;
1901         Time                    time = 0;
1902
1903         DNPRINTF(SWM_D_MOUSE, "resize: win %lu floating %d trans %d\n",
1904             win->id, win->floating, win->transient);
1905
1906         if (!(win->transient != 0 || win->floating != 0))
1907                 return;
1908
1909         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
1910             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
1911                 return;
1912         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w, win->g.h);
1913         do {
1914                 XMaskEvent(display, MOUSEMASK | ExposureMask |
1915                     SubstructureRedirectMask, &ev);
1916                 switch(ev.type) {
1917                 case ConfigureRequest:
1918                 case Expose:
1919                 case MapRequest:
1920                         handler[ev.type](&ev);
1921                         break;
1922                 case MotionNotify:
1923                         if (ev.xmotion.x < 0)
1924                                 ev.xmotion.x = 0;
1925                         if (ev.xmotion.y < 0)
1926                                 ev.xmotion.y = 0;
1927                         win->g.w = ev.xmotion.x;
1928                         win->g.h = ev.xmotion.y;
1929
1930                         /* not free, don't sync more than 60 times / second */
1931                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
1932                                 time = ev.xmotion.time;
1933                                 XSync(display, False);
1934                                 resize_window(win, args->id);
1935                         }
1936                         break;
1937                 }
1938         } while (ev.type != ButtonRelease);
1939         if (time) {
1940                 XSync(display, False);
1941                 resize_window(win, args->id);
1942         }
1943         XWarpPointer(display, None, win->id, 0, 0, 0, 0, win->g.w - 1,
1944             win->g.h - 1);
1945         XUngrabPointer(display, CurrentTime);
1946
1947         /* drain events */
1948         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
1949 }
1950
1951 void
1952 move_window(struct ws_win *win)
1953 {
1954         unsigned int            mask;
1955         XWindowChanges          wc;
1956         struct swm_region       *r;
1957
1958         r = root_to_region(win->wa.root);
1959         bzero(&wc, sizeof wc);
1960         mask = CWX | CWY;
1961         wc.x = win->g.x;
1962         wc.y = win->g.y;
1963
1964         DNPRINTF(SWM_D_STACK, "move_window: win %lu x %d y %d w %d h %d\n",
1965             win->id, wc.x, wc.y, wc.width, wc.height);
1966
1967         XConfigureWindow(display, win->id, mask, &wc);
1968         config_win(win);
1969 }
1970
1971 void
1972 move(struct ws_win *win, union arg *args)
1973 {
1974         XEvent                  ev;
1975         Time                    time = 0;
1976         int                     restack = 0;
1977
1978         DNPRINTF(SWM_D_MOUSE, "move: win %lu floating %d trans %d\n",
1979             win->id, win->floating, win->transient);
1980
1981         if (win->floating == 0) {
1982                 win->floating = 1;
1983                 win->manual = 1;
1984                 restack = 1;
1985         }
1986
1987         if (XGrabPointer(display, win->id, False, MOUSEMASK, GrabModeAsync,
1988             GrabModeAsync, None, None /* cursor */, CurrentTime) != GrabSuccess)
1989                 return;
1990         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
1991         do {
1992                 XMaskEvent(display, MOUSEMASK | ExposureMask |
1993                     SubstructureRedirectMask, &ev);
1994                 switch(ev.type) {
1995                 case ConfigureRequest:
1996                 case Expose:
1997                 case MapRequest:
1998                         handler[ev.type](&ev);
1999                         break;
2000                 case MotionNotify:
2001                         win->g.x = ev.xmotion.x_root;
2002                         win->g.y = ev.xmotion.y_root;
2003
2004                         /* not free, don't sync more than 60 times / second */
2005                         if ((ev.xmotion.time - time) > (1000 / 60) ) {
2006                                 time = ev.xmotion.time;
2007                                 XSync(display, False);
2008                                 move_window(win);
2009                         }
2010                         break;
2011                 }
2012         } while (ev.type != ButtonRelease);
2013         if (time) {
2014                 XSync(display, False);
2015                 move_window(win);
2016         }
2017         XWarpPointer(display, None, win->id, 0, 0, 0, 0, 0, 0);
2018         XUngrabPointer(display, CurrentTime);
2019         if (restack)
2020                 stack();
2021
2022         /* drain events */
2023         while (XCheckMaskEvent(display, EnterWindowMask, &ev));
2024 }
2025
2026 /* mouse */
2027 enum { client_click, root_click };
2028 struct button {
2029         unsigned int            action;
2030         unsigned int            mask;
2031         unsigned int            button;
2032         void                    (*func)(struct ws_win *, union arg *);
2033         union arg               args;
2034 } buttons[] = {
2035           /* action             key             mouse button    func            args */
2036         { client_click,         MODKEY,         Button3,        resize,         {.id = SWM_ARG_ID_DONTCENTER} },
2037         { client_click,         MODKEY | ShiftMask, Button3,    resize,         {.id = SWM_ARG_ID_CENTER} },
2038         { client_click,         MODKEY,         Button1,        move,           {0} },
2039 };
2040
2041 void
2042 updatenumlockmask(void)
2043 {
2044         unsigned int            i, j;
2045         XModifierKeymap         *modmap;
2046
2047         DNPRINTF(SWM_D_MISC, "updatenumlockmask\n");
2048         numlockmask = 0;
2049         modmap = XGetModifierMapping(display);
2050         for (i = 0; i < 8; i++)
2051                 for (j = 0; j < modmap->max_keypermod; j++)
2052                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
2053                           == XKeysymToKeycode(display, XK_Num_Lock))
2054                                 numlockmask = (1 << i);
2055
2056         XFreeModifiermap(modmap);
2057 }
2058
2059 void
2060 grabkeys(void)
2061 {
2062         unsigned int            i, j, k;
2063         KeyCode                 code;
2064         unsigned int            modifiers[] =
2065             { 0, LockMask, numlockmask, numlockmask | LockMask };
2066
2067         DNPRINTF(SWM_D_MISC, "grabkeys\n");
2068         updatenumlockmask();
2069
2070         for (k = 0; k < ScreenCount(display); k++) {
2071                 if (TAILQ_EMPTY(&screens[k].rl))
2072                         continue;
2073                 XUngrabKey(display, AnyKey, AnyModifier, screens[k].root);
2074                 for (i = 0; i < LENGTH(keys); i++) {
2075                         if ((code = XKeysymToKeycode(display, keys[i].keysym)))
2076                                 for (j = 0; j < LENGTH(modifiers); j++)
2077                                         XGrabKey(display, code,
2078                                             keys[i].mod | modifiers[j],
2079                                             screens[k].root, True,
2080                                             GrabModeAsync, GrabModeAsync);
2081                 }
2082         }
2083 }
2084
2085 void
2086 grabbuttons(struct ws_win *win, int focused)
2087 {
2088         unsigned int            i, j;
2089         unsigned int            modifiers[] =
2090             { 0, LockMask, numlockmask, numlockmask|LockMask };
2091
2092         updatenumlockmask();
2093         XUngrabButton(display, AnyButton, AnyModifier, win->id);
2094         if(focused) {
2095                 for (i = 0; i < LENGTH(buttons); i++)
2096                         if (buttons[i].action == client_click)
2097                                 for (j = 0; j < LENGTH(modifiers); j++)
2098                                         XGrabButton(display, buttons[i].button,
2099                                             buttons[i].mask | modifiers[j],
2100                                             win->id, False, BUTTONMASK,
2101                                             GrabModeAsync, GrabModeSync, None,
2102                                             None);
2103         } else
2104                 XGrabButton(display, AnyButton, AnyModifier, win->id, False,
2105                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
2106 }
2107
2108 void
2109 expose(XEvent *e)
2110 {
2111         DNPRINTF(SWM_D_EVENT, "expose: window: %lu\n", e->xexpose.window);
2112 }
2113
2114 void
2115 keypress(XEvent *e)
2116 {
2117         unsigned int            i;
2118         KeySym                  keysym;
2119         XKeyEvent               *ev = &e->xkey;
2120
2121         DNPRINTF(SWM_D_EVENT, "keypress: window: %lu\n", ev->window);
2122
2123         keysym = XKeycodeToKeysym(display, (KeyCode)ev->keycode, 0);
2124         for (i = 0; i < LENGTH(keys); i++)
2125                 if (keysym == keys[i].keysym
2126                    && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
2127                    && keys[i].func)
2128                         keys[i].func(root_to_region(ev->root),
2129                             &(keys[i].args));
2130 }
2131
2132 void
2133 buttonpress(XEvent *e)
2134 {
2135         XButtonPressedEvent     *ev = &e->xbutton;
2136
2137         struct ws_win           *win;
2138         int                     i, action;
2139
2140         DNPRINTF(SWM_D_EVENT, "buttonpress: window: %lu\n", ev->window);
2141
2142         action = root_click;
2143         if ((win = find_window(ev->window)) == NULL)
2144                 return;
2145         else {
2146                 focus_win(win);
2147                 action = client_click;
2148         }
2149
2150         for (i = 0; i < LENGTH(buttons); i++)
2151                 if (action == buttons[i].action && buttons[i].func &&
2152                     buttons[i].button == ev->button &&
2153                     CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
2154                         buttons[i].func(win, &buttons[i].args);
2155 }
2156
2157 void
2158 set_win_state(struct ws_win *win, long state)
2159 {
2160         long                    data[] = {state, None};
2161
2162         DNPRINTF(SWM_D_EVENT, "set_win_state: window: %lu\n", win->id);
2163
2164         XChangeProperty(display, win->id, astate, astate, 32, PropModeReplace,
2165             (unsigned char *)data, 2);
2166 }
2167
2168 struct ws_win *
2169 manage_window(Window id)
2170 {
2171         Window                  trans;
2172         struct workspace        *ws;
2173         struct ws_win           *win;
2174         int                     format, i, ws_idx;
2175         unsigned long           nitems, bytes;
2176         Atom                    ws_idx_atom = 0, type;
2177         unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
2178         struct swm_region       *r;
2179         long                    mask;
2180         const char              *errstr;
2181         XWindowChanges          wc;
2182
2183         if ((win = find_window(id)) != NULL)
2184                         return (win);   /* already being managed */
2185
2186         if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
2187                 errx(1, "calloc: failed to allocate memory for new window");
2188
2189         /* Get all the window data in one shot */
2190         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2191         if (ws_idx_atom)
2192                 XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
2193                     False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
2194         XGetWindowAttributes(display, id, &win->wa);
2195         XGetTransientForHint(display, id, &trans);
2196         XGetWMNormalHints(display, id, &win->sh, &mask); /* XXX function? */
2197         if (trans) {
2198                 win->transient = trans;
2199                 DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
2200                     (unsigned)win->id, win->transient);
2201         }
2202
2203         /*
2204          * Figure out where to put the window. If it was previously assigned to
2205          * a workspace (either by spawn() or manually moving), and isn't
2206          * transient, * put it in the same workspace
2207          */
2208         r = root_to_region(win->wa.root);
2209         if (prop && win->transient == 0) {
2210                 DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
2211                 ws_idx = strtonum(prop, 0, 9, &errstr);
2212                 if (errstr) {
2213                         DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
2214                             errstr, prop);
2215                 }
2216                 ws = &r->s->ws[ws_idx];
2217         } else
2218                 ws = r->ws;
2219
2220         /* set up the window layout */
2221         win->id = id;
2222         win->ws = ws;
2223         win->s = r->s;  /* this never changes */
2224         TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
2225
2226         win->g.w = win->wa.width;
2227         win->g.h = win->wa.height;
2228         win->g.x = win->wa.x;
2229         win->g.y = win->wa.y;
2230
2231         /* Set window properties so we can remember this after reincarnation */
2232         if (ws_idx_atom && prop == NULL &&
2233             snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
2234                 DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
2235                     ws_idx_str);
2236                 XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
2237                     PropModeReplace, ws_idx_str, SWM_PROPLEN);
2238         }
2239         XFree(prop);
2240
2241         if (XGetClassHint(display, win->id, &win->ch)) {
2242                 DNPRINTF(SWM_D_CLASS, "class: %s name: %s\n",
2243                     win->ch.res_class, win->ch.res_name);
2244                 for (i = 0; quirks[i].class != NULL && quirks[i].name != NULL &&
2245                     quirks[i].quirk != 0; i++){
2246                         if (!strcmp(win->ch.res_class, quirks[i].class) &&
2247                             !strcmp(win->ch.res_name, quirks[i].name)) {
2248                                 DNPRINTF(SWM_D_CLASS, "found: %s name: %s\n",
2249                                     win->ch.res_class, win->ch.res_name);
2250                                 if (quirks[i].quirk & SWM_Q_FLOAT)
2251                                         win->floating = 1;
2252                                 win->quirks = quirks[i].quirk;
2253                         }
2254                 }
2255         }
2256
2257         /* alter window position if quirky */
2258         if (win->quirks & SWM_Q_ANYWHERE) {
2259                 win->manual = 1; /* don't center the quirky windows */
2260                 bzero(&wc, sizeof wc);
2261                 mask = 0;
2262                 if (win->g.y < bar_height) {
2263                         win->g.y = wc.y = bar_height;
2264                         mask |= CWY;
2265                 }
2266                 if (win->g.w + win->g.x > WIDTH(r)) {
2267                         win->g.x = wc.x = WIDTH(win->ws->r) - win->g.w - 2;
2268                         mask |= CWX;
2269                 }
2270                 wc.border_width = 1;
2271                 mask |= CWBorderWidth;
2272                 XConfigureWindow(display, win->id, mask, &wc);
2273         }
2274
2275         XSelectInput(display, id, EnterWindowMask | FocusChangeMask |
2276             PropertyChangeMask | StructureNotifyMask);
2277
2278         set_win_state(win, NormalState);
2279
2280         /* floaters need to be mapped if they are in the current workspace */
2281         if (win->floating && (ws->idx == r->ws->idx))
2282                 XMapRaised(display, win->id);
2283
2284         /* make new win focused */
2285         focus_win(win);
2286
2287         return (win);
2288 }
2289
2290 void
2291 unmanage_window(struct ws_win *win)
2292 {
2293         struct workspace        *ws;
2294
2295         if (win == NULL)
2296                 return;
2297
2298         DNPRINTF(SWM_D_MISC, "unmanage_window:  %lu\n", win->id);
2299
2300         /* don't unmanage if we are switching workspaces */
2301         ws = win->ws;
2302         if (ws->restack)
2303                 return;
2304
2305         /* find a window to focus */
2306         if (ws->focus == win)
2307                 ws->focus = TAILQ_PREV(win, ws_win_list, entry);
2308         if (ws->focus == NULL)
2309                 ws->focus = TAILQ_FIRST(&ws->winlist);
2310         if (ws->focus == NULL || ws->focus == win) {
2311                 ws->focus = NULL;
2312                 unfocus_all();
2313         } else
2314                 focus_win(ws->focus);
2315         if (ws->focus_prev == win)
2316                 ws->focus_prev = NULL;
2317
2318         TAILQ_REMOVE(&win->ws->winlist, win, entry);
2319         set_win_state(win, WithdrawnState);
2320         if (win->ch.res_class)
2321                 XFree(win->ch.res_class);
2322         if (win->ch.res_name)
2323                 XFree(win->ch.res_name);
2324         free(win);
2325 }
2326
2327 void
2328 configurerequest(XEvent *e)
2329 {
2330         XConfigureRequestEvent  *ev = &e->xconfigurerequest;
2331         struct ws_win           *win;
2332         int                     new = 0;
2333         XWindowChanges          wc;
2334
2335         if ((win = find_window(ev->window)) == NULL)
2336                 new = 1;
2337
2338         if (new) {
2339                 DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
2340                     ev->window);
2341                 bzero(&wc, sizeof wc);
2342                 wc.x = ev->x;
2343                 wc.y = ev->y;
2344                 wc.width = ev->width;
2345                 wc.height = ev->height;
2346                 wc.border_width = ev->border_width;
2347                 wc.sibling = ev->above;
2348                 wc.stack_mode = ev->detail;
2349                 XConfigureWindow(display, ev->window, ev->value_mask, &wc);
2350         } else {
2351                 DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
2352                     ev->window);
2353                 if (win->floating) {
2354                         if (ev->value_mask & CWX)
2355                                 win->g.x = ev->x;
2356                         if (ev->value_mask & CWY)
2357                                 win->g.y = ev->y;
2358                         if (ev->value_mask & CWWidth)
2359                                 win->g.w = ev->width;
2360                         if (ev->value_mask & CWHeight)
2361                                 win->g.h = ev->height;
2362                         if (win->ws->r != NULL) {
2363                                 /* this seems to be full screen */
2364                                 if (win->g.w >= WIDTH(win->ws->r)) {
2365                                         win->g.x = -1;
2366                                         win->g.w = WIDTH(win->ws->r);
2367                                         ev->value_mask |= CWX | CWWidth;
2368                                 }
2369                                 if (win->g.h >= HEIGHT(win->ws->r)) {
2370                                         /* kill border */
2371                                         win->g.y = -1;
2372                                         win->g.h = HEIGHT(win->ws->r);
2373                                         ev->value_mask |= CWY | CWHeight;
2374                                 }
2375                         }
2376                         if ((ev->value_mask & (CWX | CWY)) &&
2377                             !(ev->value_mask & (CWWidth | CWHeight)))
2378                                 config_win(win);
2379                         XMoveResizeWindow(display, win->id,
2380                             win->g.x, win->g.y, win->g.w, win->g.h);
2381                 } else
2382                         config_win(win);
2383         }
2384 }
2385
2386 void
2387 configurenotify(XEvent *e)
2388 {
2389         struct ws_win           *win;
2390         long                    mask;
2391
2392         DNPRINTF(SWM_D_EVENT, "configurenotify: window: %lu\n",
2393             e->xconfigure.window);
2394
2395         win = find_window(e->xconfigure.window);
2396         XMapWindow(display, win->id);
2397         XGetWMNormalHints(display, win->id, &win->sh, &mask);
2398         adjust_font(win);
2399         XMapWindow(display, win->id);
2400         if (font_adjusted)
2401                 stack();
2402 }
2403
2404 void
2405 destroynotify(XEvent *e)
2406 {
2407         struct ws_win           *win;
2408         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2409
2410         DNPRINTF(SWM_D_EVENT, "destroynotify: window %lu\n", ev->window);
2411
2412         if ((win = find_window(ev->window)) != NULL) {
2413                 unmanage_window(win);
2414                 stack();
2415         }
2416 }
2417
2418 void
2419 enternotify(XEvent *e)
2420 {
2421         XCrossingEvent          *ev = &e->xcrossing;
2422         struct ws_win           *win;
2423
2424         DNPRINTF(SWM_D_EVENT, "enternotify: window: %lu\n", ev->window);
2425
2426         if (ignore_enter) {
2427                 /* eat event(r) to prevent autofocus */
2428                 ignore_enter--;
2429                 return;
2430         }
2431
2432         if ((win = find_window(ev->window)) != NULL)
2433                 focus_win(win);
2434 }
2435
2436 void
2437 focusin(XEvent *e)
2438 {
2439         DNPRINTF(SWM_D_EVENT, "focusin: window: %lu\n", e->xfocus.window);
2440 }
2441
2442 void
2443 mappingnotify(XEvent *e)
2444 {
2445         XMappingEvent           *ev = &e->xmapping;
2446
2447         DNPRINTF(SWM_D_EVENT, "mappingnotify: window: %lu\n", ev->window);
2448
2449         XRefreshKeyboardMapping(ev);
2450         if (ev->request == MappingKeyboard)
2451                 grabkeys();
2452 }
2453
2454 void
2455 maprequest(XEvent *e)
2456 {
2457         XMapRequestEvent        *ev = &e->xmaprequest;
2458         XWindowAttributes       wa;
2459
2460         DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
2461             e->xmaprequest.window);
2462
2463         if (!XGetWindowAttributes(display, ev->window, &wa))
2464                 return;
2465         if (wa.override_redirect)
2466                 return;
2467         manage_window(e->xmaprequest.window);
2468
2469         stack();
2470 }
2471
2472 void
2473 propertynotify(XEvent *e)
2474 {
2475         struct ws_win           *win;
2476         XPropertyEvent          *ev = &e->xproperty;
2477
2478         DNPRINTF(SWM_D_EVENT, "propertynotify: window: %lu\n",
2479             ev->window);
2480
2481         if (ev->state == PropertyDelete)
2482                 return; /* ignore */
2483         win = find_window(ev->window);
2484         if (win == NULL)
2485                 return;
2486
2487         switch (ev->atom) {
2488         case XA_WM_NORMAL_HINTS:
2489 #if 0
2490                 long            mask;
2491                 XGetWMNormalHints(display, win->id, &win->sh, &mask);
2492                 fprintf(stderr, "normal hints: flag 0x%x\n", win->sh.flags);
2493                 if (win->sh.flags & PMinSize) {
2494                         win->g.w = win->sh.min_width;
2495                         win->g.h = win->sh.min_height;
2496                         fprintf(stderr, "min %d %d\n", win->g.w, win->g.h);
2497                 }
2498                 XMoveResizeWindow(display, win->id,
2499                     win->g.x, win->g.y, win->g.w, win->g.h);
2500 #endif
2501                 break;
2502         default:
2503                 break;
2504         }
2505 }
2506
2507 void
2508 unmapnotify(XEvent *e)
2509 {
2510         XDestroyWindowEvent     *ev = &e->xdestroywindow;
2511         struct ws_win           *win;
2512
2513         DNPRINTF(SWM_D_EVENT, "unmapnotify: window: %lu\n", e->xunmap.window);
2514
2515         if ((win = find_window(ev->window)) != NULL)
2516                 if (win->transient)
2517                         unmanage_window(win);
2518 }
2519
2520 void
2521 visibilitynotify(XEvent *e)
2522 {
2523         int                     i;
2524         struct swm_region       *r;
2525
2526         DNPRINTF(SWM_D_EVENT, "visibilitynotify: window: %lu\n",
2527             e->xvisibility.window);
2528         if (e->xvisibility.state == VisibilityUnobscured)
2529                 for (i = 0; i < ScreenCount(display); i++)
2530                         TAILQ_FOREACH(r, &screens[i].rl, entry)
2531                                 if (e->xvisibility.window == r->bar_window)
2532                                         bar_update();
2533 }
2534
2535 int
2536 xerror_start(Display *d, XErrorEvent *ee)
2537 {
2538         other_wm = 1;
2539         return (-1);
2540 }
2541
2542 int
2543 xerror(Display *d, XErrorEvent *ee)
2544 {
2545         /* fprintf(stderr, "error: %p %p\n", display, ee); */
2546         return (-1);
2547 }
2548
2549 int
2550 active_wm(void)
2551 {
2552         other_wm = 0;
2553         xerrorxlib = XSetErrorHandler(xerror_start);
2554
2555         /* this causes an error if some other window manager is running */
2556         XSelectInput(display, DefaultRootWindow(display),
2557             SubstructureRedirectMask);
2558         XSync(display, False);
2559         if (other_wm)
2560                 return (1);
2561
2562         XSetErrorHandler(xerror);
2563         XSync(display, False);
2564         return (0);
2565 }
2566
2567 long
2568 getstate(Window w)
2569 {
2570         int                     format, status;
2571         long                    result = -1;
2572         unsigned char           *p = NULL;
2573         unsigned long           n, extra;
2574         Atom                    real;
2575
2576         astate = XInternAtom(display, "WM_STATE", False);
2577         status = XGetWindowProperty(display, w, astate, 0L, 2L, False, astate,
2578             &real, &format, &n, &extra, (unsigned char **)&p);
2579         if (status != Success)
2580                 return (-1);
2581         if (n != 0)
2582                 result = *p;
2583         XFree(p);
2584         return (result);
2585 }
2586
2587 void
2588 new_region(struct swm_screen *s, int x, int y, int w, int h)
2589 {
2590         struct swm_region       *r, *n;
2591         struct workspace        *ws = NULL;
2592         int                     i;
2593
2594         DNPRINTF(SWM_D_MISC, "new region: screen[%d]:%dx%d+%d+%d\n",
2595              s->idx, w, h, x, y);
2596
2597         /* remove any conflicting regions */
2598         n = TAILQ_FIRST(&s->rl);
2599         while (n) {
2600                 r = n;
2601                 n = TAILQ_NEXT(r, entry);
2602                 if (X(r) < (x + w) &&
2603                     (X(r) + WIDTH(r)) > x &&
2604                     Y(r) < (y + h) &&
2605                     (Y(r) + HEIGHT(r)) > y) {
2606                         XDestroyWindow(display, r->bar_window);
2607                         TAILQ_REMOVE(&s->rl, r, entry);
2608                         TAILQ_INSERT_TAIL(&s->orl, r, entry);
2609                 }
2610         }
2611
2612         /* search old regions for one to reuse */
2613
2614         /* size + location match */
2615         TAILQ_FOREACH(r, &s->orl, entry)
2616                 if (X(r) == x && Y(r) == y &&
2617                     HEIGHT(r) == h && WIDTH(r) == w)
2618                         break;
2619
2620         /* size match */
2621         TAILQ_FOREACH(r, &s->orl, entry)
2622                 if (HEIGHT(r) == h && WIDTH(r) == w)
2623                         break;
2624
2625         if (r != NULL) {
2626                 TAILQ_REMOVE(&s->orl, r, entry);
2627                 /* try to use old region's workspace */
2628                 if (r->ws->r == NULL)
2629                         ws = r->ws;
2630         } else
2631                 if ((r = calloc(1, sizeof(struct swm_region))) == NULL)
2632                         errx(1, "calloc: failed to allocate memory for screen");
2633
2634         /* if we don't have a workspace already, find one */
2635         if (ws == NULL) {
2636                 for (i = 0; i < SWM_WS_MAX; i++)
2637                         if (s->ws[i].r == NULL) {
2638                                 ws = &s->ws[i];
2639                                 break;
2640                         }
2641         }
2642
2643         if (ws == NULL)
2644                 errx(1, "no free workspaces\n");
2645
2646         X(r) = x;
2647         Y(r) = y;
2648         WIDTH(r) = w;
2649         HEIGHT(r) = h;
2650         r->s = s;
2651         r->ws = ws;
2652         ws->r = r;
2653         TAILQ_INSERT_TAIL(&s->rl, r, entry);
2654         bar_setup(r);
2655 }
2656
2657 void
2658 scan_xrandr(int i)
2659 {
2660 #ifdef SWM_XRR_HAS_CRTC
2661         XRRCrtcInfo             *ci;
2662         XRRScreenResources      *sr;
2663         int                     c;
2664         int                     ncrtc = 0;
2665 #endif /* SWM_XRR_HAS_CRTC */
2666         struct swm_region       *r;
2667
2668
2669         if (i >= ScreenCount(display))
2670                 errx(1, "invalid screen");
2671
2672         /* remove any old regions */
2673         while ((r = TAILQ_FIRST(&screens[i].rl)) != NULL) {
2674                 r->ws->r = NULL;
2675                 XDestroyWindow(display, r->bar_window);
2676                 TAILQ_REMOVE(&screens[i].rl, r, entry);
2677                 TAILQ_INSERT_TAIL(&screens[i].orl, r, entry);
2678         }
2679
2680         /* map virtual screens onto physical screens */
2681 #ifdef SWM_XRR_HAS_CRTC
2682         if (xrandr_support) {
2683                 sr = XRRGetScreenResources(display, screens[i].root);
2684                 if (sr == NULL)
2685                         new_region(&screens[i], 0, 0,
2686                             DisplayWidth(display, i),
2687                             DisplayHeight(display, i));
2688                 else
2689                         ncrtc = sr->ncrtc;
2690
2691                 for (c = 0, ci = NULL; c < ncrtc; c++) {
2692                         ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
2693                         if (ci->noutput == 0)
2694                                 continue;
2695
2696                         if (ci != NULL && ci->mode == None)
2697                                 new_region(&screens[i], 0, 0,
2698                                     DisplayWidth(display, i),
2699                                     DisplayHeight(display, i));
2700                         else
2701                                 new_region(&screens[i],
2702                                     ci->x, ci->y, ci->width, ci->height);
2703                 }
2704                 if (ci)
2705                         XRRFreeCrtcInfo(ci);
2706                 XRRFreeScreenResources(sr);
2707         } else
2708 #endif /* SWM_XRR_HAS_CRTC */
2709         {
2710                 new_region(&screens[i], 0, 0, DisplayWidth(display, i),
2711                     DisplayHeight(display, i));
2712         }
2713 }
2714
2715 void
2716 screenchange(XEvent *e) {
2717         XRRScreenChangeNotifyEvent      *xe = (XRRScreenChangeNotifyEvent *)e;
2718         struct swm_region               *r;
2719         struct ws_win                   *win;
2720         int                             i;
2721
2722         DNPRINTF(SWM_D_EVENT, "screenchange: %lu\n", xe->root);
2723
2724         if (!XRRUpdateConfiguration(e))
2725                 return;
2726
2727         /* silly event doesn't include the screen index */
2728         for (i = 0; i < ScreenCount(display); i++)
2729                 if (screens[i].root == xe->root)
2730                         break;
2731         if (i >= ScreenCount(display))
2732                 errx(1, "screenchange: screen not found\n");
2733
2734         /* brute force for now, just re-enumerate the regions */
2735         scan_xrandr(i);
2736
2737         /* hide any windows that went away */
2738         TAILQ_FOREACH(r, &screens[i].rl, entry)
2739                 TAILQ_FOREACH(win, &r->ws->winlist, entry)
2740                         XUnmapWindow(display, win->id);
2741         stack();
2742 }
2743
2744 void
2745 setup_screens(void)
2746 {
2747         Window                  d1, d2, *wins = NULL;
2748         XWindowAttributes       wa;
2749         unsigned int            no;
2750         int                     i, j, k;
2751         int                     errorbase, major, minor;
2752         struct workspace        *ws;
2753         int                     ws_idx_atom;
2754
2755
2756         if ((screens = calloc(ScreenCount(display),
2757              sizeof(struct swm_screen))) == NULL)
2758                 errx(1, "calloc: screens");
2759
2760         ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
2761
2762         /* initial Xrandr setup */
2763         xrandr_support = XRRQueryExtension(display,
2764             &xrandr_eventbase, &errorbase);
2765         if (xrandr_support)
2766                 if (XRRQueryVersion(display, &major, &minor) && major < 1)
2767                         xrandr_support = 0;
2768
2769         /* map physical screens */
2770         for (i = 0; i < ScreenCount(display); i++) {
2771                 DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
2772                 screens[i].idx = i;
2773                 TAILQ_INIT(&screens[i].rl);
2774                 TAILQ_INIT(&screens[i].orl);
2775                 screens[i].root = RootWindow(display, i);
2776
2777                 /* set default colors */
2778                 setscreencolor("red", i + 1, SWM_S_COLOR_FOCUS);
2779                 setscreencolor("rgb:88/88/88", i + 1, SWM_S_COLOR_UNFOCUS);
2780                 setscreencolor("rgb:00/80/80", i + 1, SWM_S_COLOR_BAR_BORDER);
2781                 setscreencolor("black", i + 1, SWM_S_COLOR_BAR);
2782                 setscreencolor("rgb:a0/a0/a0", i + 1, SWM_S_COLOR_BAR_FONT);
2783
2784                 /* init all workspaces */
2785                 /* XXX these should be dynamically allocated too */
2786                 for (j = 0; j < SWM_WS_MAX; j++) {
2787                         ws = &screens[i].ws[j];
2788                         ws->idx = j;
2789                         ws->restack = 1;
2790                         ws->focus = NULL;
2791                         ws->r = NULL;
2792                         TAILQ_INIT(&ws->winlist);
2793
2794                         for (k = 0; layouts[k].l_stack != NULL; k++)
2795                                 if (layouts[k].l_config != NULL)
2796                                         layouts[k].l_config(ws,
2797                                             SWM_ARG_ID_STACKINIT);
2798                         ws->cur_layout = &layouts[0];
2799                 }
2800                 /* grab existing windows (before we build the bars)*/
2801                 if (!XQueryTree(display, screens[i].root, &d1, &d2, &wins, &no))
2802                         continue;
2803
2804                 scan_xrandr(i);
2805
2806                 if (xrandr_support)
2807                         XRRSelectInput(display, screens[i].root,
2808                             RRScreenChangeNotifyMask);
2809
2810                 /* attach windows to a region */
2811                 /* normal windows */
2812                 for (j = 0; j < no; j++) {
2813                         XGetWindowAttributes(display, wins[j], &wa);
2814                         if (!XGetWindowAttributes(display, wins[j], &wa) ||
2815                             wa.override_redirect ||
2816                             XGetTransientForHint(display, wins[j], &d1))
2817                                 continue;
2818
2819                         if (wa.map_state == IsViewable ||
2820                             getstate(wins[j]) == NormalState)
2821                                 manage_window(wins[j]);
2822                 }
2823                 /* transient windows */
2824                 for (j = 0; j < no; j++) {
2825                         if (!XGetWindowAttributes(display, wins[j], &wa))
2826                                 continue;
2827
2828                         if (XGetTransientForHint(display, wins[j], &d1) &&
2829                             (wa.map_state == IsViewable || getstate(wins[j]) ==
2830                             NormalState))
2831                                 manage_window(wins[j]);
2832                 }
2833                 if (wins) {
2834                         XFree(wins);
2835                         wins = NULL;
2836                 }
2837         }
2838 }
2839
2840 int
2841 main(int argc, char *argv[])
2842 {
2843         struct passwd           *pwd;
2844         char                    conf[PATH_MAX], *cfile = NULL;
2845         struct stat             sb;
2846         XEvent                  e;
2847         int                     xfd;
2848         fd_set                  rd;
2849
2850         start_argv = argv;
2851         fprintf(stderr, "Welcome to scrotwm V%s cvs tag: %s\n",
2852             SWM_VERSION, cvstag);
2853         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2854                 warnx("no locale support");
2855
2856         if (!(display = XOpenDisplay(0)))
2857                 errx(1, "can not open display");
2858
2859         if (active_wm())
2860                 errx(1, "other wm running");
2861
2862         astate = XInternAtom(display, "WM_STATE", False);
2863
2864         /* look for local and global conf file */
2865         pwd = getpwuid(getuid());
2866         if (pwd == NULL)
2867                 errx(1, "invalid user %d", getuid());
2868
2869         setup_screens();
2870
2871         snprintf(conf, sizeof conf, "%s/.%s", pwd->pw_dir, SWM_CONF_FILE);
2872         if (stat(conf, &sb) != -1) {
2873                 if (S_ISREG(sb.st_mode))
2874                         cfile = conf;
2875         } else {
2876                 /* try global conf file */
2877                 snprintf(conf, sizeof conf, "/etc/%s", SWM_CONF_FILE);
2878                 if (!stat(conf, &sb))
2879                         if (S_ISREG(sb.st_mode))
2880                                 cfile = conf;
2881         }
2882         if (cfile)
2883                 conf_load(cfile);
2884         bar_refresh();
2885
2886         /* ws[0].focus = TAILQ_FIRST(&ws[0].winlist); */
2887
2888         grabkeys();
2889         stack();
2890
2891         xfd = ConnectionNumber(display);
2892         while (running) {
2893                 FD_ZERO(&rd);
2894                 FD_SET(xfd, &rd);
2895                 if (select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
2896                         if (errno != EINTR)
2897                                 errx(1, "select failed");
2898                 if (bar_alarm) {
2899                         bar_alarm = 0;
2900                         bar_update();
2901                 }
2902                 while (XPending(display)) {
2903                         XNextEvent(display, &e);
2904                         if (e.type < LASTEvent) {
2905                                 if (handler[e.type])
2906                                         handler[e.type](&e);
2907                                 else
2908                                         DNPRINTF(SWM_D_EVENT,
2909                                             "win: %lu unknown event: %d\n",
2910                                             e.xany.window, e.type);
2911                         } else {
2912                                 switch (e.type - xrandr_eventbase) {
2913                                 case RRScreenChangeNotify:
2914                                         screenchange(&e);
2915                                         break;
2916                                 default:
2917                                         DNPRINTF(SWM_D_EVENT,
2918                                             "win: %lu unknown xrandr event: "
2919                                             "%d\n", e.xany.window, e.type);
2920                                         break;
2921                                 }
2922                         }
2923                 }
2924         }
2925
2926         XCloseDisplay(display);
2927
2928         return (0);
2929 }