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