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