dmenu.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <ctype.h>
   3 #include <locale.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <strings.h>
   8 #include <time.h>
   9 #include <unistd.h>
  10
  11 #include <X11/Xlib.h>
  12 #include <X11/Xatom.h>
  13 #include <X11/Xutil.h>
  14 #ifdef XINERAMA
  15 #include <X11/extensions/Xinerama.h>
  16 #endif
  17 #include <X11/Xft/Xft.h>
  18
  19 #include "drw.h"
  20 #include "util.h"
  21
  22 /* macros */
  23 #define INTERSECT(x,y,w,h,r)  (MAX(0, MIN((x)+(w),(r).x_org+(r).width)  - MAX((x),(r).x_org)) \
  24                              * MAX(0, MIN((y)+(h),(r).y_org+(r).height) - MAX((y),(r).y_org)))
  25 #define LENGTH(X)             (sizeof X / sizeof X[0])
  26 #define TEXTW(X)              (drw_fontset_getwidth(drw, (X)) + lrpad)
  27
  28 /* enums */
  29 enum { SchemeNorm, SchemeSel, SchemeOut, SchemeLast }; /* color schemes */
  30
  31 struct item {
  32         char *text;
  33         struct item *left, *right;
  34         int out;
  35 };
  36
  37 static char text[BUFSIZ] = "";
  38 static char *embed;
  39 static int bh, mw, mh;
  40 static int inputw = 0, promptw;
  41 static int lrpad; /* sum of left and right padding */
  42 static size_t cursor;
  43 static struct item *items = NULL;
  44 static struct item *matches, *matchend;
  45 static struct item *prev, *curr, *next, *sel;
  46 static int mon = -1, screen;
  47
  48 static Atom clip, utf8;
  49 static Display *dpy;
  50 static Window root, parentwin, win;
  51 static XIC xic;
  52
  53 static Drw *drw;
  54 static Clr *scheme[SchemeLast];
  55
  56 #include "config.h"
  57
  58 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
  59 static char *(*fstrstr)(const char *, const char *) = strstr;
  60
  61 static void
  62 appenditem(struct item *item, struct item **list, struct item **last)
  63 {
  64         if (*last)
  65                 (*last)->right = item;
  66         else
  67                 *list = item;
  68
  69         item->left = *last;
  70         item->right = NULL;
  71         *last = item;
  72 }
  73
  74 static void
  75 calcoffsets(void)
  76 {
  77         int i, n;
  78
  79         if (lines > 0)
  80                 n = lines * bh;
  81         else
  82                 n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
  83         /* calculate which items will begin the next page and previous page */
  84         for (i = 0, next = curr; next; next = next->right)
  85                 if ((i += (lines > 0) ? bh : MIN(TEXTW(next->text), n)) > n)
  86                         break;
  87         for (i = 0, prev = curr; prev && prev->left; prev = prev->left)
  88                 if ((i += (lines > 0) ? bh : MIN(TEXTW(prev->left->text), n)) > n)
  89                         break;
  90 }
  91
  92 static void
  93 cleanup(void)
  94 {
  95         size_t i;
  96
  97         XUngrabKey(dpy, AnyKey, AnyModifier, root);
  98         for (i = 0; i < SchemeLast; i++)
  99                 free(scheme[i]);
 100         drw_free(drw);
 101         XSync(dpy, False);
 102         XCloseDisplay(dpy);
 103 }
 104
 105 static char *
 106 cistrstr(const char *s, const char *sub)
 107 {
 108         size_t len;
 109
 110         for (len = strlen(sub); *s; s++)
 111                 if (!strncasecmp(s, sub, len))
 112                         return (char *)s;
 113         return NULL;
 114 }
 115
 116 static int
 117 drawitem(struct item *item, int x, int y, int w)
 118 {
 119         if (item == sel)
 120                 drw_setscheme(drw, scheme[SchemeSel]);
 121         else if (item->out)
 122                 drw_setscheme(drw, scheme[SchemeOut]);
 123         else
 124                 drw_setscheme(drw, scheme[SchemeNorm]);
 125
 126         return drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
 127 }
 128
 129 static void
 130 drawmenu(void)
 131 {
 132         unsigned int curpos;
 133         struct item *item;
 134         int x = 0, y = 0, w;
 135
 136         drw_setscheme(drw, scheme[SchemeNorm]);
 137         drw_rect(drw, 0, 0, mw, mh, 1, 1);
 138
 139         if (prompt && *prompt) {
 140                 drw_setscheme(drw, scheme[SchemeSel]);
 141                 x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
 142         }
 143         /* draw input field */
 144         w = (lines > 0 || !matches) ? mw - x : inputw;
 145         drw_setscheme(drw, scheme[SchemeNorm]);
 146         drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 147
 148         curpos = TEXTW(text) - TEXTW(&text[cursor]);
 149         if ((curpos += lrpad / 2 - 1) < w) {
 150                 drw_setscheme(drw, scheme[SchemeNorm]);
 151                 drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
 152         }
 153
 154         if (lines > 0) {
 155                 /* draw vertical list */
 156                 for (item = curr; item != next; item = item->right)
 157                         drawitem(item, x, y += bh, mw - x);
 158         } else if (matches) {
 159                 /* draw horizontal list */
 160                 x += inputw;
 161                 w = TEXTW("<");
 162                 if (curr->left) {
 163                         drw_setscheme(drw, scheme[SchemeNorm]);
 164                         drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
 165                 }
 166                 x += w;
 167                 for (item = curr; item != next; item = item->right)
 168                         x = drawitem(item, x, 0, MIN(TEXTW(item->text), mw - x - TEXTW(">")));
 169                 if (next) {
 170                         w = TEXTW(">");
 171                         drw_setscheme(drw, scheme[SchemeNorm]);
 172                         drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
 173                 }
 174         }
 175         drw_map(drw, win, 0, 0, mw, mh);
 176 }
 177
 178 static void
 179 grabfocus(void)
 180 {
 181         struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000  };
 182         Window focuswin;
 183         int i, revertwin;
 184
 185         for (i = 0; i < 100; ++i) {
 186                 XGetInputFocus(dpy, &focuswin, &revertwin);
 187                 if (focuswin == win)
 188                         return;
 189                 XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
 190                 nanosleep(&ts, NULL);
 191         }
 192         die("cannot grab focus");
 193 }
 194
 195 static void
 196 grabkeyboard(void)
 197 {
 198         struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000  };
 199         int i;
 200
 201         if (embed)
 202                 return;
 203         /* try to grab keyboard, we may have to wait for another process to ungrab */
 204         for (i = 0; i < 1000; i++) {
 205                 if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
 206                                   GrabModeAsync, CurrentTime) == GrabSuccess)
 207                         return;
 208                 nanosleep(&ts, NULL);
 209         }
 210         die("cannot grab keyboard");
 211 }
 212
 213 static void
 214 match(void)
 215 {
 216         static char **tokv = NULL;
 217         static int tokn = 0;
 218
 219         char buf[sizeof text], *s;
 220         int i, tokc = 0;
 221         size_t len, textsize;
 222         struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
 223
 224         strcpy(buf, text);
 225         /* separate input text into tokens to be matched individually */
 226         for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
 227                 if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
 228                         die("cannot realloc %u bytes:", tokn * sizeof *tokv);
 229         len = tokc ? strlen(tokv[0]) : 0;
 230
 231         matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
 232         textsize = strlen(text) + 1;
 233         for (item = items; item && item->text; item++) {
 234                 for (i = 0; i < tokc; i++)
 235                         if (!fstrstr(item->text, tokv[i]))
 236                                 break;
 237                 if (i != tokc) /* not all tokens match */
 238                         continue;
 239                 /* exact matches go first, then prefixes, then substrings */
 240                 if (!tokc || !fstrncmp(text, item->text, textsize))
 241                         appenditem(item, &matches, &matchend);
 242                 else if (!fstrncmp(tokv[0], item->text, len))
 243                         appenditem(item, &lprefix, &prefixend);
 244                 else
 245                         appenditem(item, &lsubstr, &substrend);
 246         }
 247         if (lprefix) {
 248                 if (matches) {
 249                         matchend->right = lprefix;
 250                         lprefix->left = matchend;
 251                 } else
 252                         matches = lprefix;
 253                 matchend = prefixend;
 254         }
 255         if (lsubstr) {
 256                 if (matches) {
 257                         matchend->right = lsubstr;
 258                         lsubstr->left = matchend;
 259                 } else
 260                         matches = lsubstr;
 261                 matchend = substrend;
 262         }
 263         curr = sel = matches;
 264         calcoffsets();
 265 }
 266
 267 static void
 268 insert(const char *str, ssize_t n)
 269 {
 270         if (strlen(text) + n > sizeof text - 1)
 271                 return;
 272         /* move existing text out of the way, insert new text, and update cursor */
 273         memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
 274         if (n > 0)
 275                 memcpy(&text[cursor], str, n);
 276         cursor += n;
 277         match();
 278 }
 279
 280 static size_t
 281 nextrune(int inc)
 282 {
 283         ssize_t n;
 284
 285         /* return location of next utf8 rune in the given direction (+1 or -1) */
 286         for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
 287                 ;
 288         return n;
 289 }
 290
 291 static void
 292 movewordedge(int dir)
 293 {
 294         if (dir < 0) { /* move cursor to the start of the word*/
 295                 while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 296                         cursor = nextrune(-1);
 297                 while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 298                         cursor = nextrune(-1);
 299         } else { /* move cursor to the end of the word */
 300                 while (text[cursor] && strchr(worddelimiters, text[cursor]))
 301                         cursor = nextrune(+1);
 302                 while (text[cursor] && !strchr(worddelimiters, text[cursor]))
 303                         cursor = nextrune(+1);
 304         }
 305 }
 306
 307 static void
 308 keypress(XKeyEvent *ev)
 309 {
 310         char buf[32];
 311         int len;
 312         KeySym ksym;
 313         Status status;
 314
 315         len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
 316         switch (status) {
 317         default: /* XLookupNone, XBufferOverflow */
 318                 return;
 319         case XLookupChars:
 320                 goto insert;
 321         case XLookupKeySym:
 322         case XLookupBoth:
 323                 break;
 324         }
 325
 326         if (ev->state & ControlMask) {
 327                 switch(ksym) {
 328                 case XK_a: ksym = XK_Home;      break;
 329                 case XK_b: ksym = XK_Left;      break;
 330                 case XK_c: ksym = XK_Escape;    break;
 331                 case XK_d: ksym = XK_Delete;    break;
 332                 case XK_e: ksym = XK_End;       break;
 333                 case XK_f: ksym = XK_Right;     break;
 334                 case XK_g: ksym = XK_Escape;    break;
 335                 case XK_h: ksym = XK_BackSpace; break;
 336                 case XK_i: ksym = XK_Tab;       break;
 337                 case XK_j: /* fallthrough */
 338                 case XK_J: /* fallthrough */
 339                 case XK_m: /* fallthrough */
 340                 case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
 341                 case XK_n: ksym = XK_Down;      break;
 342                 case XK_p: ksym = XK_Up;        break;
 343
 344                 case XK_k: /* delete right */
 345                         text[cursor] = '\0';
 346                         match();
 347                         break;
 348                 case XK_u: /* delete left */
 349                         insert(NULL, 0 - cursor);
 350                         break;
 351                 case XK_w: /* delete word */
 352                         while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 353                                 insert(NULL, nextrune(-1) - cursor);
 354                         while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 355                                 insert(NULL, nextrune(-1) - cursor);
 356                         break;
 357                 case XK_y: /* paste selection */
 358                 case XK_Y:
 359                         XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
 360                                           utf8, utf8, win, CurrentTime);
 361                         return;
 362                 case XK_Left:
 363                 case XK_KP_Left:
 364                         movewordedge(-1);
 365                         goto draw;
 366                 case XK_Right:
 367                 case XK_KP_Right:
 368                         movewordedge(+1);
 369                         goto draw;
 370                 case XK_Return:
 371                 case XK_KP_Enter:
 372                         break;
 373                 case XK_bracketleft:
 374                         cleanup();
 375                         exit(1);
 376                 default:
 377                         return;
 378                 }
 379         } else if (ev->state & Mod1Mask) {
 380                 switch(ksym) {
 381                 case XK_b:
 382                         movewordedge(-1);
 383                         goto draw;
 384                 case XK_f:
 385                         movewordedge(+1);
 386                         goto draw;
 387                 case XK_g: ksym = XK_Home;  break;
 388                 case XK_G: ksym = XK_End;   break;
 389                 case XK_h: ksym = XK_Up;    break;
 390                 case XK_j: ksym = XK_Next;  break;
 391                 case XK_k: ksym = XK_Prior; break;
 392                 case XK_l: ksym = XK_Down;  break;
 393                 default:
 394                         return;
 395                 }
 396         }
 397
 398         switch(ksym) {
 399         default:
 400 insert:
 401                 if (!iscntrl(*buf))
 402                         insert(buf, len);
 403                 break;
 404         case XK_Delete:
 405         case XK_KP_Delete:
 406                 if (text[cursor] == '\0')
 407                         return;
 408                 cursor = nextrune(+1);
 409                 /* fallthrough */
 410         case XK_BackSpace:
 411                 if (cursor == 0)
 412                         return;
 413                 insert(NULL, nextrune(-1) - cursor);
 414                 break;
 415         case XK_End:
 416         case XK_KP_End:
 417                 if (text[cursor] != '\0') {
 418                         cursor = strlen(text);
 419                         break;
 420                 }
 421                 if (next) {
 422                         /* jump to end of list and position items in reverse */
 423                         curr = matchend;
 424                         calcoffsets();
 425                         curr = prev;
 426                         calcoffsets();
 427                         while (next && (curr = curr->right))
 428                                 calcoffsets();
 429                 }
 430                 sel = matchend;
 431                 break;
 432         case XK_Escape:
 433                 cleanup();
 434                 exit(1);
 435         case XK_Home:
 436         case XK_KP_Home:
 437                 if (sel == matches) {
 438                         cursor = 0;
 439                         break;
 440                 }
 441                 sel = curr = matches;
 442                 calcoffsets();
 443                 break;
 444         case XK_Left:
 445         case XK_KP_Left:
 446                 if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
 447                         cursor = nextrune(-1);
 448                         break;
 449                 }
 450                 if (lines > 0)
 451                         return;
 452                 /* fallthrough */
 453         case XK_Up:
 454         case XK_KP_Up:
 455                 if (sel && sel->left && (sel = sel->left)->right == curr) {
 456                         curr = prev;
 457                         calcoffsets();
 458                 }
 459                 break;
 460         case XK_Next:
 461         case XK_KP_Next:
 462                 if (!next)
 463                         return;
 464                 sel = curr = next;
 465                 calcoffsets();
 466                 break;
 467         case XK_Prior:
 468         case XK_KP_Prior:
 469                 if (!prev)
 470                         return;
 471                 sel = curr = prev;
 472                 calcoffsets();
 473                 break;
 474         case XK_Return:
 475         case XK_KP_Enter:
 476                 puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
 477                 if (!(ev->state & ControlMask)) {
 478                         cleanup();
 479                         exit(0);
 480                 }
 481                 if (sel)
 482                         sel->out = 1;
 483                 break;
 484         case XK_Right:
 485         case XK_KP_Right:
 486                 if (text[cursor] != '\0') {
 487                         cursor = nextrune(+1);
 488                         break;
 489                 }
 490                 if (lines > 0)
 491                         return;
 492                 /* fallthrough */
 493         case XK_Down:
 494         case XK_KP_Down:
 495                 if (sel && sel->right && (sel = sel->right) == next) {
 496                         curr = next;
 497                         calcoffsets();
 498                 }
 499                 break;
 500         case XK_Tab:
 501                 if (!sel)
 502                         return;
 503                 strncpy(text, sel->text, sizeof text - 1);
 504                 text[sizeof text - 1] = '\0';
 505                 cursor = strlen(text);
 506                 match();
 507                 break;
 508         }
 509
 510 draw:
 511         drawmenu();
 512 }
 513
 514 static void
 515 paste(void)
 516 {
 517         char *p, *q;
 518         int di;
 519         unsigned long dl;
 520         Atom da;
 521
 522         /* we have been given the current selection, now insert it into input */
 523         if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
 524                            utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
 525             == Success && p) {
 526                 insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
 527                 XFree(p);
 528         }
 529         drawmenu();
 530 }
 531
 532 static void
 533 readstdin(void)
 534 {
 535         char buf[sizeof text], *p;
 536         size_t i, imax = 0, size = 0;
 537         unsigned int tmpmax = 0;
 538
 539         /* read each line from stdin and add it to the item list */
 540         for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
 541                 if (i + 1 >= size / sizeof *items)
 542                         if (!(items = realloc(items, (size += BUFSIZ))))
 543                                 die("cannot realloc %u bytes:", size);
 544                 if ((p = strchr(buf, '\n')))
 545                         *p = '\0';
 546                 if (!(items[i].text = strdup(buf)))
 547                         die("cannot strdup %u bytes:", strlen(buf) + 1);
 548                 items[i].out = 0;
 549                 drw_font_getexts(drw->fonts, buf, strlen(buf), &tmpmax, NULL);
 550                 if (tmpmax > inputw) {
 551                         inputw = tmpmax;
 552                         imax = i;
 553                 }
 554         }
 555         if (items)
 556                 items[i].text = NULL;
 557         inputw = items ? TEXTW(items[imax].text) : 0;
 558         lines = MIN(lines, i);
 559 }
 560
 561 static void
 562 run(void)
 563 {
 564         XEvent ev;
 565
 566         while (!XNextEvent(dpy, &ev)) {
 567                 if (XFilterEvent(&ev, win))
 568                         continue;
 569                 switch(ev.type) {
 570                 case DestroyNotify:
 571                         if (ev.xdestroywindow.window != win)
 572                                 break;
 573                         cleanup();
 574                         exit(1);
 575                 case Expose:
 576                         if (ev.xexpose.count == 0)
 577                                 drw_map(drw, win, 0, 0, mw, mh);
 578                         break;
 579                 case FocusIn:
 580                         /* regrab focus from parent window */
 581                         if (ev.xfocus.window != win)
 582                                 grabfocus();
 583                         break;
 584                 case KeyPress:
 585                         keypress(&ev.xkey);
 586                         break;
 587                 case SelectionNotify:
 588                         if (ev.xselection.property == utf8)
 589                                 paste();
 590                         break;
 591                 case VisibilityNotify:
 592                         if (ev.xvisibility.state != VisibilityUnobscured)
 593                                 XRaiseWindow(dpy, win);
 594                         break;
 595                 }
 596         }
 597 }
 598
 599 static void
 600 setup(void)
 601 {
 602         int x, y, i, j;
 603         unsigned int du;
 604         XSetWindowAttributes swa;
 605         XIM xim;
 606         Window w, dw, *dws;
 607         XWindowAttributes wa;
 608         XClassHint ch = {"dmenu", "dmenu"};
 609 #ifdef XINERAMA
 610         XineramaScreenInfo *info;
 611         Window pw;
 612         int a, di, n, area = 0;
 613 #endif
 614         /* init appearance */
 615         for (j = 0; j < SchemeLast; j++)
 616                 scheme[j] = drw_scm_create(drw, colors[j], 2);
 617
 618         clip = XInternAtom(dpy, "CLIPBOARD",   False);
 619         utf8 = XInternAtom(dpy, "UTF8_STRING", False);
 620
 621         /* calculate menu geometry */
 622         bh = drw->fonts->h + 2;
 623         lines = MAX(lines, 0);
 624         mh = (lines + 1) * bh;
 625 #ifdef XINERAMA
 626         i = 0;
 627         if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
 628                 XGetInputFocus(dpy, &w, &di);
 629                 if (mon >= 0 && mon < n)
 630                         i = mon;
 631                 else if (w != root && w != PointerRoot && w != None) {
 632                         /* find top-level window containing current input focus */
 633                         do {
 634                                 if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
 635                                         XFree(dws);
 636                         } while (w != root && w != pw);
 637                         /* find xinerama screen with which the window intersects most */
 638                         if (XGetWindowAttributes(dpy, pw, &wa))
 639                                 for (j = 0; j < n; j++)
 640                                         if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
 641                                                 area = a;
 642                                                 i = j;
 643                                         }
 644                 }
 645                 /* no focused window is on screen, so use pointer location instead */
 646                 if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
 647                         for (i = 0; i < n; i++)
 648                                 if (INTERSECT(x, y, 1, 1, info[i]))
 649                                         break;
 650
 651                 x = info[i].x_org;
 652                 y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
 653                 mw = info[i].width;
 654                 XFree(info);
 655         } else
 656 #endif
 657         {
 658                 if (!XGetWindowAttributes(dpy, parentwin, &wa))
 659                         die("could not get embedding window attributes: 0x%lx",
 660                             parentwin);
 661                 x = 0;
 662                 y = topbar ? 0 : wa.height - mh;
 663                 mw = wa.width;
 664         }
 665         promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
 666         inputw = MIN(inputw, mw/3);
 667         match();
 668
 669         /* create menu window */
 670         swa.override_redirect = True;
 671         swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
 672         swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
 673         win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
 674                             CopyFromParent, CopyFromParent, CopyFromParent,
 675                             CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
 676         XSetClassHint(dpy, win, &ch);
 677
 678
 679         /* input methods */
 680         if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL)
 681                 die("XOpenIM failed: could not open input device");
 682
 683         xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
 684                         XNClientWindow, win, XNFocusWindow, win, NULL);
 685
 686         XMapRaised(dpy, win);
 687         if (embed) {
 688                 XSelectInput(dpy, parentwin, FocusChangeMask | SubstructureNotifyMask);
 689                 if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
 690                         for (i = 0; i < du && dws[i] != win; ++i)
 691                                 XSelectInput(dpy, dws[i], FocusChangeMask);
 692                         XFree(dws);
 693                 }
 694                 grabfocus();
 695         }
 696         drw_resize(drw, mw, mh);
 697         drawmenu();
 698 }
 699
 700 static void
 701 usage(void)
 702 {
 703         fputs("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 704               "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n", stderr);
 705         exit(1);
 706 }
 707
 708 int
 709 main(int argc, char *argv[])
 710 {
 711         XWindowAttributes wa;
 712         int i, fast = 0;
 713
 714         for (i = 1; i < argc; i++)
 715                 /* these options take no arguments */
 716                 if (!strcmp(argv[i], "-v")) {      /* prints version information */
 717                         puts("dmenu-"VERSION);
 718                         exit(0);
 719                 } else if (!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
 720                         topbar = 0;
 721                 else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
 722                         fast = 1;
 723                 else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
 724                         fstrncmp = strncasecmp;
 725                         fstrstr = cistrstr;
 726                 } else if (i + 1 == argc)
 727                         usage();
 728                 /* these options take one argument */
 729                 else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
 730                         lines = atoi(argv[++i]);
 731                 else if (!strcmp(argv[i], "-m"))
 732                         mon = atoi(argv[++i]);
 733                 else if (!strcmp(argv[i], "-p"))   /* adds prompt to left of input field */
 734                         prompt = argv[++i];
 735                 else if (!strcmp(argv[i], "-fn"))  /* font or font set */
 736                         fonts[0] = argv[++i];
 737                 else if (!strcmp(argv[i], "-nb"))  /* normal background color */
 738                         colors[SchemeNorm][ColBg] = argv[++i];
 739                 else if (!strcmp(argv[i], "-nf"))  /* normal foreground color */
 740                         colors[SchemeNorm][ColFg] = argv[++i];
 741                 else if (!strcmp(argv[i], "-sb"))  /* selected background color */
 742                         colors[SchemeSel][ColBg] = argv[++i];
 743                 else if (!strcmp(argv[i], "-sf"))  /* selected foreground color */
 744                         colors[SchemeSel][ColFg] = argv[++i];
 745                 else if (!strcmp(argv[i], "-w"))   /* embedding window id */
 746                         embed = argv[++i];
 747                 else
 748                         usage();
 749
 750         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 751                 fputs("warning: no locale support\n", stderr);
 752         if (!(dpy = XOpenDisplay(NULL)))
 753                 die("cannot open display");
 754         screen = DefaultScreen(dpy);
 755         root = RootWindow(dpy, screen);
 756         if (!embed || !(parentwin = strtol(embed, NULL, 0)))
 757                 parentwin = root;
 758         if (!XGetWindowAttributes(dpy, parentwin, &wa))
 759                 die("could not get embedding window attributes: 0x%lx",
 760                     parentwin);
 761         drw = drw_create(dpy, screen, root, wa.width, wa.height);
 762         if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
 763                 die("no fonts could be loaded.");
 764         lrpad = drw->fonts->h;
 765
 766 #ifdef __OpenBSD__
 767         if (pledge("stdio rpath", NULL) == -1)
 768                 die("pledge");
 769 #endif
 770
 771         if (fast && !isatty(0)) {
 772                 grabkeyboard();
 773                 readstdin();
 774         } else {
 775                 readstdin();
 776                 grabkeyboard();
 777         }
 778         setup();
 779         run();
 780
 781         return 1; /* unreachable */
 782 }