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 *h, const char *n)
 107 {
 108         size_t i;
 109
 110         if (!n[0])
 111                 return (char *)h;
 112
 113         for (; *h; ++h) {
 114                 for (i = 0; n[i] && tolower((unsigned char)n[i]) ==
 115                             tolower((unsigned char)h[i]); ++i)
 116                         ;
 117                 if (n[i] == '\0')
 118                         return (char *)h;
 119         }
 120         return NULL;
 121 }
 122
 123 static int
 124 drawitem(struct item *item, int x, int y, int w)
 125 {
 126         if (item == sel)
 127                 drw_setscheme(drw, scheme[SchemeSel]);
 128         else if (item->out)
 129                 drw_setscheme(drw, scheme[SchemeOut]);
 130         else
 131                 drw_setscheme(drw, scheme[SchemeNorm]);
 132
 133         return drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
 134 }
 135
 136 static void
 137 drawmenu(void)
 138 {
 139         unsigned int curpos;
 140         struct item *item;
 141         int x = 0, y = 0, w;
 142
 143         drw_setscheme(drw, scheme[SchemeNorm]);
 144         drw_rect(drw, 0, 0, mw, mh, 1, 1);
 145
 146         if (prompt && *prompt) {
 147                 drw_setscheme(drw, scheme[SchemeSel]);
 148                 x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
 149         }
 150         /* draw input field */
 151         w = (lines > 0 || !matches) ? mw - x : inputw;
 152         drw_setscheme(drw, scheme[SchemeNorm]);
 153         drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 154
 155         curpos = TEXTW(text) - TEXTW(&text[cursor]);
 156         if ((curpos += lrpad / 2 - 1) < w) {
 157                 drw_setscheme(drw, scheme[SchemeNorm]);
 158                 drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
 159         }
 160
 161         if (lines > 0) {
 162                 /* draw vertical list */
 163                 for (item = curr; item != next; item = item->right)
 164                         drawitem(item, x, y += bh, mw - x);
 165         } else if (matches) {
 166                 /* draw horizontal list */
 167                 x += inputw;
 168                 w = TEXTW("<");
 169                 if (curr->left) {
 170                         drw_setscheme(drw, scheme[SchemeNorm]);
 171                         drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
 172                 }
 173                 x += w;
 174                 for (item = curr; item != next; item = item->right)
 175                         x = drawitem(item, x, 0, MIN(TEXTW(item->text), mw - x - TEXTW(">")));
 176                 if (next) {
 177                         w = TEXTW(">");
 178                         drw_setscheme(drw, scheme[SchemeNorm]);
 179                         drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
 180                 }
 181         }
 182         drw_map(drw, win, 0, 0, mw, mh);
 183 }
 184
 185 static void
 186 grabfocus(void)
 187 {
 188         struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000  };
 189         Window focuswin;
 190         int i, revertwin;
 191
 192         for (i = 0; i < 100; ++i) {
 193                 XGetInputFocus(dpy, &focuswin, &revertwin);
 194                 if (focuswin == win)
 195                         return;
 196                 XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
 197                 nanosleep(&ts, NULL);
 198         }
 199         die("cannot grab focus");
 200 }
 201
 202 static void
 203 grabkeyboard(void)
 204 {
 205         struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000  };
 206         int i;
 207
 208         if (embed)
 209                 return;
 210         /* try to grab keyboard, we may have to wait for another process to ungrab */
 211         for (i = 0; i < 1000; i++) {
 212                 if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
 213                                   GrabModeAsync, CurrentTime) == GrabSuccess)
 214                         return;
 215                 nanosleep(&ts, NULL);
 216         }
 217         die("cannot grab keyboard");
 218 }
 219
 220 static void
 221 match(void)
 222 {
 223         static char **tokv = NULL;
 224         static int tokn = 0;
 225
 226         char buf[sizeof text], *s;
 227         int i, tokc = 0;
 228         size_t len, textsize;
 229         struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
 230
 231         strcpy(buf, text);
 232         /* separate input text into tokens to be matched individually */
 233         for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
 234                 if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
 235                         die("cannot realloc %u bytes:", tokn * sizeof *tokv);
 236         len = tokc ? strlen(tokv[0]) : 0;
 237
 238         matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
 239         textsize = strlen(text) + 1;
 240         for (item = items; item && item->text; item++) {
 241                 for (i = 0; i < tokc; i++)
 242                         if (!fstrstr(item->text, tokv[i]))
 243                                 break;
 244                 if (i != tokc) /* not all tokens match */
 245                         continue;
 246                 /* exact matches go first, then prefixes, then substrings */
 247                 if (!tokc || !fstrncmp(text, item->text, textsize))
 248                         appenditem(item, &matches, &matchend);
 249                 else if (!fstrncmp(tokv[0], item->text, len))
 250                         appenditem(item, &lprefix, &prefixend);
 251                 else
 252                         appenditem(item, &lsubstr, &substrend);
 253         }
 254         if (lprefix) {
 255                 if (matches) {
 256                         matchend->right = lprefix;
 257                         lprefix->left = matchend;
 258                 } else
 259                         matches = lprefix;
 260                 matchend = prefixend;
 261         }
 262         if (lsubstr) {
 263                 if (matches) {
 264                         matchend->right = lsubstr;
 265                         lsubstr->left = matchend;
 266                 } else
 267                         matches = lsubstr;
 268                 matchend = substrend;
 269         }
 270         curr = sel = matches;
 271         calcoffsets();
 272 }
 273
 274 static void
 275 insert(const char *str, ssize_t n)
 276 {
 277         if (strlen(text) + n > sizeof text - 1)
 278                 return;
 279         /* move existing text out of the way, insert new text, and update cursor */
 280         memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
 281         if (n > 0)
 282                 memcpy(&text[cursor], str, n);
 283         cursor += n;
 284         match();
 285 }
 286
 287 static size_t
 288 nextrune(int inc)
 289 {
 290         ssize_t n;
 291
 292         /* return location of next utf8 rune in the given direction (+1 or -1) */
 293         for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
 294                 ;
 295         return n;
 296 }
 297
 298 static void
 299 movewordedge(int dir)
 300 {
 301         if (dir < 0) { /* move cursor to the start of the word*/
 302                 while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 303                         cursor = nextrune(-1);
 304                 while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 305                         cursor = nextrune(-1);
 306         } else { /* move cursor to the end of the word */
 307                 while (text[cursor] && strchr(worddelimiters, text[cursor]))
 308                         cursor = nextrune(+1);
 309                 while (text[cursor] && !strchr(worddelimiters, text[cursor]))
 310                         cursor = nextrune(+1);
 311         }
 312 }
 313
 314 static void
 315 keypress(XKeyEvent *ev)
 316 {
 317         char buf[32];
 318         int len;
 319         KeySym ksym;
 320         Status status;
 321
 322         len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
 323         switch (status) {
 324         default: /* XLookupNone, XBufferOverflow */
 325                 return;
 326         case XLookupChars:
 327                 goto insert;
 328         case XLookupKeySym:
 329         case XLookupBoth:
 330                 break;
 331         }
 332
 333         if (ev->state & ControlMask) {
 334                 switch(ksym) {
 335                 case XK_a: ksym = XK_Home;      break;
 336                 case XK_b: ksym = XK_Left;      break;
 337                 case XK_c: ksym = XK_Escape;    break;
 338                 case XK_d: ksym = XK_Delete;    break;
 339                 case XK_e: ksym = XK_End;       break;
 340                 case XK_f: ksym = XK_Right;     break;
 341                 case XK_g: ksym = XK_Escape;    break;
 342                 case XK_h: ksym = XK_BackSpace; break;
 343                 case XK_i: ksym = XK_Tab;       break;
 344                 case XK_j: /* fallthrough */
 345                 case XK_J: /* fallthrough */
 346                 case XK_m: /* fallthrough */
 347                 case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
 348                 case XK_n: ksym = XK_Down;      break;
 349                 case XK_p: ksym = XK_Up;        break;
 350
 351                 case XK_k: /* delete right */
 352                         text[cursor] = '\0';
 353                         match();
 354                         break;
 355                 case XK_u: /* delete left */
 356                         insert(NULL, 0 - cursor);
 357                         break;
 358                 case XK_w: /* delete word */
 359                         while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 360                                 insert(NULL, nextrune(-1) - cursor);
 361                         while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 362                                 insert(NULL, nextrune(-1) - cursor);
 363                         break;
 364                 case XK_y: /* paste selection */
 365                 case XK_Y:
 366                         XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
 367                                           utf8, utf8, win, CurrentTime);
 368                         return;
 369                 case XK_Left:
 370                 case XK_KP_Left:
 371                         movewordedge(-1);
 372                         goto draw;
 373                 case XK_Right:
 374                 case XK_KP_Right:
 375                         movewordedge(+1);
 376                         goto draw;
 377                 case XK_Return:
 378                 case XK_KP_Enter:
 379                         break;
 380                 case XK_bracketleft:
 381                         cleanup();
 382                         exit(1);
 383                 default:
 384                         return;
 385                 }
 386         } else if (ev->state & Mod1Mask) {
 387                 switch(ksym) {
 388                 case XK_b:
 389                         movewordedge(-1);
 390                         goto draw;
 391                 case XK_f:
 392                         movewordedge(+1);
 393                         goto draw;
 394                 case XK_g: ksym = XK_Home;  break;
 395                 case XK_G: ksym = XK_End;   break;
 396                 case XK_h: ksym = XK_Up;    break;
 397                 case XK_j: ksym = XK_Next;  break;
 398                 case XK_k: ksym = XK_Prior; break;
 399                 case XK_l: ksym = XK_Down;  break;
 400                 default:
 401                         return;
 402                 }
 403         }
 404
 405         switch(ksym) {
 406         default:
 407 insert:
 408                 if (!iscntrl(*buf))
 409                         insert(buf, len);
 410                 break;
 411         case XK_Delete:
 412         case XK_KP_Delete:
 413                 if (text[cursor] == '\0')
 414                         return;
 415                 cursor = nextrune(+1);
 416                 /* fallthrough */
 417         case XK_BackSpace:
 418                 if (cursor == 0)
 419                         return;
 420                 insert(NULL, nextrune(-1) - cursor);
 421                 break;
 422         case XK_End:
 423         case XK_KP_End:
 424                 if (text[cursor] != '\0') {
 425                         cursor = strlen(text);
 426                         break;
 427                 }
 428                 if (next) {
 429                         /* jump to end of list and position items in reverse */
 430                         curr = matchend;
 431                         calcoffsets();
 432                         curr = prev;
 433                         calcoffsets();
 434                         while (next && (curr = curr->right))
 435                                 calcoffsets();
 436                 }
 437                 sel = matchend;
 438                 break;
 439         case XK_Escape:
 440                 cleanup();
 441                 exit(1);
 442         case XK_Home:
 443         case XK_KP_Home:
 444                 if (sel == matches) {
 445                         cursor = 0;
 446                         break;
 447                 }
 448                 sel = curr = matches;
 449                 calcoffsets();
 450                 break;
 451         case XK_Left:
 452         case XK_KP_Left:
 453                 if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
 454                         cursor = nextrune(-1);
 455                         break;
 456                 }
 457                 if (lines > 0)
 458                         return;
 459                 /* fallthrough */
 460         case XK_Up:
 461         case XK_KP_Up:
 462                 if (sel && sel->left && (sel = sel->left)->right == curr) {
 463                         curr = prev;
 464                         calcoffsets();
 465                 }
 466                 break;
 467         case XK_Next:
 468         case XK_KP_Next:
 469                 if (!next)
 470                         return;
 471                 sel = curr = next;
 472                 calcoffsets();
 473                 break;
 474         case XK_Prior:
 475         case XK_KP_Prior:
 476                 if (!prev)
 477                         return;
 478                 sel = curr = prev;
 479                 calcoffsets();
 480                 break;
 481         case XK_Return:
 482         case XK_KP_Enter:
 483                 puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
 484                 if (!(ev->state & ControlMask)) {
 485                         cleanup();
 486                         exit(0);
 487                 }
 488                 if (sel)
 489                         sel->out = 1;
 490                 break;
 491         case XK_Right:
 492         case XK_KP_Right:
 493                 if (text[cursor] != '\0') {
 494                         cursor = nextrune(+1);
 495                         break;
 496                 }
 497                 if (lines > 0)
 498                         return;
 499                 /* fallthrough */
 500         case XK_Down:
 501         case XK_KP_Down:
 502                 if (sel && sel->right && (sel = sel->right) == next) {
 503                         curr = next;
 504                         calcoffsets();
 505                 }
 506                 break;
 507         case XK_Tab:
 508                 if (!sel)
 509                         return;
 510                 strncpy(text, sel->text, sizeof text - 1);
 511                 text[sizeof text - 1] = '\0';
 512                 cursor = strlen(text);
 513                 match();
 514                 break;
 515         }
 516
 517 draw:
 518         drawmenu();
 519 }
 520
 521 static void
 522 paste(void)
 523 {
 524         char *p, *q;
 525         int di;
 526         unsigned long dl;
 527         Atom da;
 528
 529         /* we have been given the current selection, now insert it into input */
 530         if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
 531                            utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
 532             == Success && p) {
 533                 insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
 534                 XFree(p);
 535         }
 536         drawmenu();
 537 }
 538
 539 static void
 540 readstdin(void)
 541 {
 542         char buf[sizeof text], *p;
 543         size_t i, imax = 0, size = 0;
 544         unsigned int tmpmax = 0;
 545
 546         /* read each line from stdin and add it to the item list */
 547         for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
 548                 if (i + 1 >= size / sizeof *items)
 549                         if (!(items = realloc(items, (size += BUFSIZ))))
 550                                 die("cannot realloc %u bytes:", size);
 551                 if ((p = strchr(buf, '\n')))
 552                         *p = '\0';
 553                 if (!(items[i].text = strdup(buf)))
 554                         die("cannot strdup %u bytes:", strlen(buf) + 1);
 555                 items[i].out = 0;
 556                 drw_font_getexts(drw->fonts, buf, strlen(buf), &tmpmax, NULL);
 557                 if (tmpmax > inputw) {
 558                         inputw = tmpmax;
 559                         imax = i;
 560                 }
 561         }
 562         if (items)
 563                 items[i].text = NULL;
 564         inputw = items ? TEXTW(items[imax].text) : 0;
 565         lines = MIN(lines, i);
 566 }
 567
 568 static void
 569 run(void)
 570 {
 571         XEvent ev;
 572
 573         while (!XNextEvent(dpy, &ev)) {
 574                 if (XFilterEvent(&ev, win))
 575                         continue;
 576                 switch(ev.type) {
 577                 case DestroyNotify:
 578                         if (ev.xdestroywindow.window != win)
 579                                 break;
 580                         cleanup();
 581                         exit(1);
 582                 case Expose:
 583                         if (ev.xexpose.count == 0)
 584                                 drw_map(drw, win, 0, 0, mw, mh);
 585                         break;
 586                 case FocusIn:
 587                         /* regrab focus from parent window */
 588                         if (ev.xfocus.window != win)
 589                                 grabfocus();
 590                         break;
 591                 case KeyPress:
 592                         keypress(&ev.xkey);
 593                         break;
 594                 case SelectionNotify:
 595                         if (ev.xselection.property == utf8)
 596                                 paste();
 597                         break;
 598                 case VisibilityNotify:
 599                         if (ev.xvisibility.state != VisibilityUnobscured)
 600                                 XRaiseWindow(dpy, win);
 601                         break;
 602                 }
 603         }
 604 }
 605
 606 static void
 607 setup(void)
 608 {
 609         int x, y, i, j;
 610         unsigned int du;
 611         XSetWindowAttributes swa;
 612         XIM xim;
 613         Window w, dw, *dws;
 614         XWindowAttributes wa;
 615         XClassHint ch = {"dmenu", "dmenu"};
 616 #ifdef XINERAMA
 617         XineramaScreenInfo *info;
 618         Window pw;
 619         int a, di, n, area = 0;
 620 #endif
 621         /* init appearance */
 622         for (j = 0; j < SchemeLast; j++)
 623                 scheme[j] = drw_scm_create(drw, colors[j], 2);
 624
 625         clip = XInternAtom(dpy, "CLIPBOARD",   False);
 626         utf8 = XInternAtom(dpy, "UTF8_STRING", False);
 627
 628         /* calculate menu geometry */
 629         bh = drw->fonts->h + 2;
 630         lines = MAX(lines, 0);
 631         mh = (lines + 1) * bh;
 632 #ifdef XINERAMA
 633         i = 0;
 634         if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
 635                 XGetInputFocus(dpy, &w, &di);
 636                 if (mon >= 0 && mon < n)
 637                         i = mon;
 638                 else if (w != root && w != PointerRoot && w != None) {
 639                         /* find top-level window containing current input focus */
 640                         do {
 641                                 if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
 642                                         XFree(dws);
 643                         } while (w != root && w != pw);
 644                         /* find xinerama screen with which the window intersects most */
 645                         if (XGetWindowAttributes(dpy, pw, &wa))
 646                                 for (j = 0; j < n; j++)
 647                                         if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
 648                                                 area = a;
 649                                                 i = j;
 650                                         }
 651                 }
 652                 /* no focused window is on screen, so use pointer location instead */
 653                 if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
 654                         for (i = 0; i < n; i++)
 655                                 if (INTERSECT(x, y, 1, 1, info[i]) != 0)
 656                                         break;
 657
 658                 x = info[i].x_org;
 659                 y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
 660                 mw = info[i].width;
 661                 XFree(info);
 662         } else
 663 #endif
 664         {
 665                 if (!XGetWindowAttributes(dpy, parentwin, &wa))
 666                         die("could not get embedding window attributes: 0x%lx",
 667                             parentwin);
 668                 x = 0;
 669                 y = topbar ? 0 : wa.height - mh;
 670                 mw = wa.width;
 671         }
 672         promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
 673         inputw = MIN(inputw, mw/3);
 674         match();
 675
 676         /* create menu window */
 677         swa.override_redirect = True;
 678         swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
 679         swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
 680         win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
 681                             CopyFromParent, CopyFromParent, CopyFromParent,
 682                             CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
 683         XSetClassHint(dpy, win, &ch);
 684
 685
 686         /* input methods */
 687         if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL)
 688                 die("XOpenIM failed: could not open input device");
 689
 690         xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
 691                         XNClientWindow, win, XNFocusWindow, win, NULL);
 692
 693         XMapRaised(dpy, win);
 694         if (embed) {
 695                 XSelectInput(dpy, parentwin, FocusChangeMask | SubstructureNotifyMask);
 696                 if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
 697                         for (i = 0; i < du && dws[i] != win; ++i)
 698                                 XSelectInput(dpy, dws[i], FocusChangeMask);
 699                         XFree(dws);
 700                 }
 701                 grabfocus();
 702         }
 703         drw_resize(drw, mw, mh);
 704         drawmenu();
 705 }
 706
 707 static void
 708 usage(void)
 709 {
 710         fputs("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 711               "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n", stderr);
 712         exit(1);
 713 }
 714
 715 int
 716 main(int argc, char *argv[])
 717 {
 718         XWindowAttributes wa;
 719         int i, fast = 0;
 720
 721         for (i = 1; i < argc; i++)
 722                 /* these options take no arguments */
 723                 if (!strcmp(argv[i], "-v")) {      /* prints version information */
 724                         puts("dmenu-"VERSION);
 725                         exit(0);
 726                 } else if (!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
 727                         topbar = 0;
 728                 else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
 729                         fast = 1;
 730                 else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
 731                         fstrncmp = strncasecmp;
 732                         fstrstr = cistrstr;
 733                 } else if (i + 1 == argc)
 734                         usage();
 735                 /* these options take one argument */
 736                 else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
 737                         lines = atoi(argv[++i]);
 738                 else if (!strcmp(argv[i], "-m"))
 739                         mon = atoi(argv[++i]);
 740                 else if (!strcmp(argv[i], "-p"))   /* adds prompt to left of input field */
 741                         prompt = argv[++i];
 742                 else if (!strcmp(argv[i], "-fn"))  /* font or font set */
 743                         fonts[0] = argv[++i];
 744                 else if (!strcmp(argv[i], "-nb"))  /* normal background color */
 745                         colors[SchemeNorm][ColBg] = argv[++i];
 746                 else if (!strcmp(argv[i], "-nf"))  /* normal foreground color */
 747                         colors[SchemeNorm][ColFg] = argv[++i];
 748                 else if (!strcmp(argv[i], "-sb"))  /* selected background color */
 749                         colors[SchemeSel][ColBg] = argv[++i];
 750                 else if (!strcmp(argv[i], "-sf"))  /* selected foreground color */
 751                         colors[SchemeSel][ColFg] = argv[++i];
 752                 else if (!strcmp(argv[i], "-w"))   /* embedding window id */
 753                         embed = argv[++i];
 754                 else
 755                         usage();
 756
 757         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 758                 fputs("warning: no locale support\n", stderr);
 759         if (!(dpy = XOpenDisplay(NULL)))
 760                 die("cannot open display");
 761         screen = DefaultScreen(dpy);
 762         root = RootWindow(dpy, screen);
 763         if (!embed || !(parentwin = strtol(embed, NULL, 0)))
 764                 parentwin = root;
 765         if (!XGetWindowAttributes(dpy, parentwin, &wa))
 766                 die("could not get embedding window attributes: 0x%lx",
 767                     parentwin);
 768         drw = drw_create(dpy, screen, root, wa.width, wa.height);
 769         if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
 770                 die("no fonts could be loaded.");
 771         lrpad = drw->fonts->h;
 772
 773 #ifdef __OpenBSD__
 774         if (pledge("stdio rpath", NULL) == -1)
 775                 die("pledge");
 776 #endif
 777
 778         if (fast && !isatty(0)) {
 779                 grabkeyboard();
 780                 readstdin();
 781         } else {
 782                 readstdin();
 783                 grabkeyboard();
 784         }
 785         setup();
 786         run();
 787
 788         return 1; /* unreachable */
 789 }