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 {
 109         size_t i;
 110
 111         if (!n[0])
 112                 return (char *)h;
 113
 114         for (; *h; ++h) {
 115                 for (i = 0; n[i] && tolower((unsigned char)n[i]) ==
 116                             tolower((unsigned char)h[i]); ++i)
 117                         ;
 118                 if (n[i] == '\0')
 119                         return (char *)h;
 120         }
 121         return NULL;
 122 }
 123
 124 static int
 125 drawitem(struct item *item, int x, int y, int w)
 126 {
 127         if (item == sel)
 128                 drw_setscheme(drw, scheme[SchemeSel]);
 129         else if (item->out)
 130                 drw_setscheme(drw, scheme[SchemeOut]);
 131         else
 132                 drw_setscheme(drw, scheme[SchemeNorm]);
 133
 134         return drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
 135 }
 136
 137 static void
 138 drawmenu(void)
 139 {
 140         unsigned int curpos;
 141         struct item *item;
 142         int x = 0, y = 0, w;
 143
 144         drw_setscheme(drw, scheme[SchemeNorm]);
 145         drw_rect(drw, 0, 0, mw, mh, 1, 1);
 146
 147         if (prompt && *prompt) {
 148                 drw_setscheme(drw, scheme[SchemeSel]);
 149                 x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
 150         }
 151         /* draw input field */
 152         w = (lines > 0 || !matches) ? mw - x : inputw;
 153         drw_setscheme(drw, scheme[SchemeNorm]);
 154         drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 155
 156         curpos = TEXTW(text) - TEXTW(&text[cursor]);
 157         if ((curpos += lrpad / 2 - 1) < w) {
 158                 drw_setscheme(drw, scheme[SchemeNorm]);
 159                 drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
 160         }
 161
 162         if (lines > 0) {
 163                 /* draw vertical list */
 164                 for (item = curr; item != next; item = item->right)
 165                         drawitem(item, x, y += bh, mw - x);
 166         } else if (matches) {
 167                 /* draw horizontal list */
 168                 x += inputw;
 169                 w = TEXTW("<");
 170                 if (curr->left) {
 171                         drw_setscheme(drw, scheme[SchemeNorm]);
 172                         drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
 173                 }
 174                 x += w;
 175                 for (item = curr; item != next; item = item->right)
 176                         x = drawitem(item, x, 0, MIN(TEXTW(item->text), mw - x - TEXTW(">")));
 177                 if (next) {
 178                         w = TEXTW(">");
 179                         drw_setscheme(drw, scheme[SchemeNorm]);
 180                         drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
 181                 }
 182         }
 183         drw_map(drw, win, 0, 0, mw, mh);
 184 }
 185
 186 static void
 187 grabfocus(void)
 188 {
 189         struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000  };
 190         Window focuswin;
 191         int i, revertwin;
 192
 193         for (i = 0; i < 100; ++i) {
 194                 XGetInputFocus(dpy, &focuswin, &revertwin);
 195                 if (focuswin == win)
 196                         return;
 197                 XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
 198                 nanosleep(&ts, NULL);
 199         }
 200         die("cannot grab focus");
 201 }
 202
 203 static void
 204 grabkeyboard(void)
 205 {
 206         struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000  };
 207         int i;
 208
 209         if (embed)
 210                 return;
 211         /* try to grab keyboard, we may have to wait for another process to ungrab */
 212         for (i = 0; i < 1000; i++) {
 213                 if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
 214                                   GrabModeAsync, CurrentTime) == GrabSuccess)
 215                         return;
 216                 nanosleep(&ts, NULL);
 217         }
 218         die("cannot grab keyboard");
 219 }
 220
 221 static void
 222 match(void)
 223 {
 224         static char **tokv = NULL;
 225         static int tokn = 0;
 226
 227         char buf[sizeof text], *s;
 228         int i, tokc = 0;
 229         size_t len, textsize;
 230         struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
 231
 232         strcpy(buf, text);
 233         /* separate input text into tokens to be matched individually */
 234         for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
 235                 if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
 236                         die("cannot realloc %u bytes:", tokn * sizeof *tokv);
 237         len = tokc ? strlen(tokv[0]) : 0;
 238
 239         matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
 240         textsize = strlen(text) + 1;
 241         for (item = items; item && item->text; item++) {
 242                 for (i = 0; i < tokc; i++)
 243                         if (!fstrstr(item->text, tokv[i]))
 244                                 break;
 245                 if (i != tokc) /* not all tokens match */
 246                         continue;
 247                 /* exact matches go first, then prefixes, then substrings */
 248                 if (!tokc || !fstrncmp(text, item->text, textsize))
 249                         appenditem(item, &matches, &matchend);
 250                 else if (!fstrncmp(tokv[0], item->text, len))
 251                         appenditem(item, &lprefix, &prefixend);
 252                 else
 253                         appenditem(item, &lsubstr, &substrend);
 254         }
 255         if (lprefix) {
 256                 if (matches) {
 257                         matchend->right = lprefix;
 258                         lprefix->left = matchend;
 259                 } else
 260                         matches = lprefix;
 261                 matchend = prefixend;
 262         }
 263         if (lsubstr) {
 264                 if (matches) {
 265                         matchend->right = lsubstr;
 266                         lsubstr->left = matchend;
 267                 } else
 268                         matches = lsubstr;
 269                 matchend = substrend;
 270         }
 271         curr = sel = matches;
 272         calcoffsets();
 273 }
 274
 275 static void
 276 insert(const char *str, ssize_t n)
 277 {
 278         if (strlen(text) + n > sizeof text - 1)
 279                 return;
 280         /* move existing text out of the way, insert new text, and update cursor */
 281         memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
 282         if (n > 0)
 283                 memcpy(&text[cursor], str, n);
 284         cursor += n;
 285         match();
 286 }
 287
 288 static size_t
 289 nextrune(int inc)
 290 {
 291         ssize_t n;
 292
 293         /* return location of next utf8 rune in the given direction (+1 or -1) */
 294         for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
 295                 ;
 296         return n;
 297 }
 298
 299 static void
 300 movewordedge(int dir)
 301 {
 302         if (dir < 0) { /* move cursor to the start of the word*/
 303                 while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 304                         cursor = nextrune(-1);
 305                 while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 306                         cursor = nextrune(-1);
 307         } else { /* move cursor to the end of the word */
 308                 while (text[cursor] && strchr(worddelimiters, text[cursor]))
 309                         cursor = nextrune(+1);
 310                 while (text[cursor] && !strchr(worddelimiters, text[cursor]))
 311                         cursor = nextrune(+1);
 312         }
 313 }
 314
 315 static void
 316 keypress(XKeyEvent *ev)
 317 {
 318         char buf[32];
 319         int len;
 320         KeySym ksym;
 321         Status status;
 322
 323         len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
 324         switch (status) {
 325         default: /* XLookupNone, XBufferOverflow */
 326                 return;
 327         case XLookupChars:
 328                 goto insert;
 329         case XLookupKeySym:
 330         case XLookupBoth:
 331                 break;
 332         }
 333
 334         if (ev->state & ControlMask) {
 335                 switch(ksym) {
 336                 case XK_a: ksym = XK_Home;      break;
 337                 case XK_b: ksym = XK_Left;      break;
 338                 case XK_c: ksym = XK_Escape;    break;
 339                 case XK_d: ksym = XK_Delete;    break;
 340                 case XK_e: ksym = XK_End;       break;
 341                 case XK_f: ksym = XK_Right;     break;
 342                 case XK_g: ksym = XK_Escape;    break;
 343                 case XK_h: ksym = XK_BackSpace; break;
 344                 case XK_i: ksym = XK_Tab;       break;
 345                 case XK_j: /* fallthrough */
 346                 case XK_J: /* fallthrough */
 347                 case XK_m: /* fallthrough */
 348                 case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
 349                 case XK_n: ksym = XK_Down;      break;
 350                 case XK_p: ksym = XK_Up;        break;
 351
 352                 case XK_k: /* delete right */
 353                         text[cursor] = '\0';
 354                         match();
 355                         break;
 356                 case XK_u: /* delete left */
 357                         insert(NULL, 0 - cursor);
 358                         break;
 359                 case XK_w: /* delete word */
 360                         while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 361                                 insert(NULL, nextrune(-1) - cursor);
 362                         while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 363                                 insert(NULL, nextrune(-1) - cursor);
 364                         break;
 365                 case XK_y: /* paste selection */
 366                 case XK_Y:
 367                         XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
 368                                           utf8, utf8, win, CurrentTime);
 369                         return;
 370                 case XK_Left:
 371                 case XK_KP_Left:
 372                         movewordedge(-1);
 373                         goto draw;
 374                 case XK_Right:
 375                 case XK_KP_Right:
 376                         movewordedge(+1);
 377                         goto draw;
 378                 case XK_Return:
 379                 case XK_KP_Enter:
 380                         break;
 381                 case XK_bracketleft:
 382                         cleanup();
 383                         exit(1);
 384                 default:
 385                         return;
 386                 }
 387         } else if (ev->state & Mod1Mask) {
 388                 switch(ksym) {
 389                 case XK_b:
 390                         movewordedge(-1);
 391                         goto draw;
 392                 case XK_f:
 393                         movewordedge(+1);
 394                         goto draw;
 395                 case XK_g: ksym = XK_Home;  break;
 396                 case XK_G: ksym = XK_End;   break;
 397                 case XK_h: ksym = XK_Up;    break;
 398                 case XK_j: ksym = XK_Next;  break;
 399                 case XK_k: ksym = XK_Prior; break;
 400                 case XK_l: ksym = XK_Down;  break;
 401                 default:
 402                         return;
 403                 }
 404         }
 405
 406         switch(ksym) {
 407         default:
 408 insert:
 409                 if (!iscntrl(*buf))
 410                         insert(buf, len);
 411                 break;
 412         case XK_Delete:
 413         case XK_KP_Delete:
 414                 if (text[cursor] == '\0')
 415                         return;
 416                 cursor = nextrune(+1);
 417                 /* fallthrough */
 418         case XK_BackSpace:
 419                 if (cursor == 0)
 420                         return;
 421                 insert(NULL, nextrune(-1) - cursor);
 422                 break;
 423         case XK_End:
 424         case XK_KP_End:
 425                 if (text[cursor] != '\0') {
 426                         cursor = strlen(text);
 427                         break;
 428                 }
 429                 if (next) {
 430                         /* jump to end of list and position items in reverse */
 431                         curr = matchend;
 432                         calcoffsets();
 433                         curr = prev;
 434                         calcoffsets();
 435                         while (next && (curr = curr->right))
 436                                 calcoffsets();
 437                 }
 438                 sel = matchend;
 439                 break;
 440         case XK_Escape:
 441                 cleanup();
 442                 exit(1);
 443         case XK_Home:
 444         case XK_KP_Home:
 445                 if (sel == matches) {
 446                         cursor = 0;
 447                         break;
 448                 }
 449                 sel = curr = matches;
 450                 calcoffsets();
 451                 break;
 452         case XK_Left:
 453         case XK_KP_Left:
 454                 if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
 455                         cursor = nextrune(-1);
 456                         break;
 457                 }
 458                 if (lines > 0)
 459                         return;
 460                 /* fallthrough */
 461         case XK_Up:
 462         case XK_KP_Up:
 463                 if (sel && sel->left && (sel = sel->left)->right == curr) {
 464                         curr = prev;
 465                         calcoffsets();
 466                 }
 467                 break;
 468         case XK_Next:
 469         case XK_KP_Next:
 470                 if (!next)
 471                         return;
 472                 sel = curr = next;
 473                 calcoffsets();
 474                 break;
 475         case XK_Prior:
 476         case XK_KP_Prior:
 477                 if (!prev)
 478                         return;
 479                 sel = curr = prev;
 480                 calcoffsets();
 481                 break;
 482         case XK_Return:
 483         case XK_KP_Enter:
 484                 puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
 485                 if (!(ev->state & ControlMask)) {
 486                         cleanup();
 487                         exit(0);
 488                 }
 489                 if (sel)
 490                         sel->out = 1;
 491                 break;
 492         case XK_Right:
 493         case XK_KP_Right:
 494                 if (text[cursor] != '\0') {
 495                         cursor = nextrune(+1);
 496                         break;
 497                 }
 498                 if (lines > 0)
 499                         return;
 500                 /* fallthrough */
 501         case XK_Down:
 502         case XK_KP_Down:
 503                 if (sel && sel->right && (sel = sel->right) == next) {
 504                         curr = next;
 505                         calcoffsets();
 506                 }
 507                 break;
 508         case XK_Tab:
 509                 if (!sel)
 510                         return;
 511                 strncpy(text, sel->text, sizeof text - 1);
 512                 text[sizeof text - 1] = '\0';
 513                 cursor = strlen(text);
 514                 match();
 515                 break;
 516         }
 517
 518 draw:
 519         drawmenu();
 520 }
 521
 522 static void
 523 paste(void)
 524 {
 525         char *p, *q;
 526         int di;
 527         unsigned long dl;
 528         Atom da;
 529
 530         /* we have been given the current selection, now insert it into input */
 531         if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
 532                            utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
 533             == Success && p) {
 534                 insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
 535                 XFree(p);
 536         }
 537         drawmenu();
 538 }
 539
 540 static void
 541 readstdin(void)
 542 {
 543         char buf[sizeof text], *p;
 544         size_t i, imax = 0, size = 0;
 545         unsigned int tmpmax = 0;
 546
 547         /* read each line from stdin and add it to the item list */
 548         for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
 549                 if (i + 1 >= size / sizeof *items)
 550                         if (!(items = realloc(items, (size += BUFSIZ))))
 551                                 die("cannot realloc %u bytes:", size);
 552                 if ((p = strchr(buf, '\n')))
 553                         *p = '\0';
 554                 if (!(items[i].text = strdup(buf)))
 555                         die("cannot strdup %u bytes:", strlen(buf) + 1);
 556                 items[i].out = 0;
 557                 drw_font_getexts(drw->fonts, buf, strlen(buf), &tmpmax, NULL);
 558                 if (tmpmax > inputw) {
 559                         inputw = tmpmax;
 560                         imax = i;
 561                 }
 562         }
 563         if (items)
 564                 items[i].text = NULL;
 565         inputw = items ? TEXTW(items[imax].text) : 0;
 566         lines = MIN(lines, i);
 567 }
 568
 569 static void
 570 run(void)
 571 {
 572         XEvent ev;
 573
 574         while (!XNextEvent(dpy, &ev)) {
 575                 if (XFilterEvent(&ev, win))
 576                         continue;
 577                 switch(ev.type) {
 578                 case DestroyNotify:
 579                         if (ev.xdestroywindow.window != win)
 580                                 break;
 581                         cleanup();
 582                         exit(1);
 583                 case Expose:
 584                         if (ev.xexpose.count == 0)
 585                                 drw_map(drw, win, 0, 0, mw, mh);
 586                         break;
 587                 case FocusIn:
 588                         /* regrab focus from parent window */
 589                         if (ev.xfocus.window != win)
 590                                 grabfocus();
 591                         break;
 592                 case KeyPress:
 593                         keypress(&ev.xkey);
 594                         break;
 595                 case SelectionNotify:
 596                         if (ev.xselection.property == utf8)
 597                                 paste();
 598                         break;
 599                 case VisibilityNotify:
 600                         if (ev.xvisibility.state != VisibilityUnobscured)
 601                                 XRaiseWindow(dpy, win);
 602                         break;
 603                 }
 604         }
 605 }
 606
 607 static void
 608 setup(void)
 609 {
 610         int x, y, i, j;
 611         unsigned int du;
 612         XSetWindowAttributes swa;
 613         XIM xim;
 614         Window w, dw, *dws;
 615         XWindowAttributes wa;
 616         XClassHint ch = {"dmenu", "dmenu"};
 617 #ifdef XINERAMA
 618         XineramaScreenInfo *info;
 619         Window pw;
 620         int a, di, n, area = 0;
 621 #endif
 622         /* init appearance */
 623         for (j = 0; j < SchemeLast; j++)
 624                 scheme[j] = drw_scm_create(drw, colors[j], 2);
 625
 626         clip = XInternAtom(dpy, "CLIPBOARD",   False);
 627         utf8 = XInternAtom(dpy, "UTF8_STRING", False);
 628
 629         /* calculate menu geometry */
 630         bh = drw->fonts->h + 2;
 631         lines = MAX(lines, 0);
 632         mh = (lines + 1) * bh;
 633 #ifdef XINERAMA
 634         i = 0;
 635         if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
 636                 XGetInputFocus(dpy, &w, &di);
 637                 if (mon >= 0 && mon < n)
 638                         i = mon;
 639                 else if (w != root && w != PointerRoot && w != None) {
 640                         /* find top-level window containing current input focus */
 641                         do {
 642                                 if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
 643                                         XFree(dws);
 644                         } while (w != root && w != pw);
 645                         /* find xinerama screen with which the window intersects most */
 646                         if (XGetWindowAttributes(dpy, pw, &wa))
 647                                 for (j = 0; j < n; j++)
 648                                         if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
 649                                                 area = a;
 650                                                 i = j;
 651                                         }
 652                 }
 653                 /* no focused window is on screen, so use pointer location instead */
 654                 if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
 655                         for (i = 0; i < n; i++)
 656                                 if (INTERSECT(x, y, 1, 1, info[i]))
 657                                         break;
 658
 659                 x = info[i].x_org;
 660                 y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
 661                 mw = info[i].width;
 662                 XFree(info);
 663         } else
 664 #endif
 665         {
 666                 if (!XGetWindowAttributes(dpy, parentwin, &wa))
 667                         die("could not get embedding window attributes: 0x%lx",
 668                             parentwin);
 669                 x = 0;
 670                 y = topbar ? 0 : wa.height - mh;
 671                 mw = wa.width;
 672         }
 673         promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
 674         inputw = MIN(inputw, mw/3);
 675         match();
 676
 677         /* create menu window */
 678         swa.override_redirect = True;
 679         swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
 680         swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
 681         win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
 682                             CopyFromParent, CopyFromParent, CopyFromParent,
 683                             CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
 684         XSetClassHint(dpy, win, &ch);
 685
 686
 687         /* input methods */
 688         if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL)
 689                 die("XOpenIM failed: could not open input device");
 690
 691         xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
 692                         XNClientWindow, win, XNFocusWindow, win, NULL);
 693
 694         XMapRaised(dpy, win);
 695         if (embed) {
 696                 XSelectInput(dpy, parentwin, FocusChangeMask | SubstructureNotifyMask);
 697                 if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
 698                         for (i = 0; i < du && dws[i] != win; ++i)
 699                                 XSelectInput(dpy, dws[i], FocusChangeMask);
 700                         XFree(dws);
 701                 }
 702                 grabfocus();
 703         }
 704         drw_resize(drw, mw, mh);
 705         drawmenu();
 706 }
 707
 708 static void
 709 usage(void)
 710 {
 711         fputs("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 712               "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n", stderr);
 713         exit(1);
 714 }
 715
 716 int
 717 main(int argc, char *argv[])
 718 {
 719         XWindowAttributes wa;
 720         int i, fast = 0;
 721
 722         for (i = 1; i < argc; i++)
 723                 /* these options take no arguments */
 724                 if (!strcmp(argv[i], "-v")) {      /* prints version information */
 725                         puts("dmenu-"VERSION);
 726                         exit(0);
 727                 } else if (!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
 728                         topbar = 0;
 729                 else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
 730                         fast = 1;
 731                 else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
 732                         fstrncmp = strncasecmp;
 733                         fstrstr = cistrstr;
 734                 } else if (i + 1 == argc)
 735                         usage();
 736                 /* these options take one argument */
 737                 else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
 738                         lines = atoi(argv[++i]);
 739                 else if (!strcmp(argv[i], "-m"))
 740                         mon = atoi(argv[++i]);
 741                 else if (!strcmp(argv[i], "-p"))   /* adds prompt to left of input field */
 742                         prompt = argv[++i];
 743                 else if (!strcmp(argv[i], "-fn"))  /* font or font set */
 744                         fonts[0] = argv[++i];
 745                 else if (!strcmp(argv[i], "-nb"))  /* normal background color */
 746                         colors[SchemeNorm][ColBg] = argv[++i];
 747                 else if (!strcmp(argv[i], "-nf"))  /* normal foreground color */
 748                         colors[SchemeNorm][ColFg] = argv[++i];
 749                 else if (!strcmp(argv[i], "-sb"))  /* selected background color */
 750                         colors[SchemeSel][ColBg] = argv[++i];
 751                 else if (!strcmp(argv[i], "-sf"))  /* selected foreground color */
 752                         colors[SchemeSel][ColFg] = argv[++i];
 753                 else if (!strcmp(argv[i], "-w"))   /* embedding window id */
 754                         embed = argv[++i];
 755                 else
 756                         usage();
 757
 758         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 759                 fputs("warning: no locale support\n", stderr);
 760         if (!(dpy = XOpenDisplay(NULL)))
 761                 die("cannot open display");
 762         screen = DefaultScreen(dpy);
 763         root = RootWindow(dpy, screen);
 764         if (!embed || !(parentwin = strtol(embed, NULL, 0)))
 765                 parentwin = root;
 766         if (!XGetWindowAttributes(dpy, parentwin, &wa))
 767                 die("could not get embedding window attributes: 0x%lx",
 768                     parentwin);
 769         drw = drw_create(dpy, screen, root, wa.width, wa.height);
 770         if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
 771                 die("no fonts could be loaded.");
 772         lrpad = drw->fonts->h;
 773
 774 #ifdef __OpenBSD__
 775         if (pledge("stdio rpath", NULL) == -1)
 776                 die("pledge");
 777 #endif
 778
 779         if (fast && !isatty(0)) {
 780                 grabkeyboard();
 781                 readstdin();
 782         } else {
 783                 readstdin();
 784                 grabkeyboard();
 785         }
 786         setup();
 787         run();
 788
 789         return 1; /* unreachable */
 790 }