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 unsigned int
  62 textw_clamp(const char *str, unsigned int n)
  63 {
  64         unsigned int w = drw_fontset_getwidth_clamp(drw, str, n) + lrpad;
  65         return MIN(w, n);
  66 }
  67
  68 static void
  69 appenditem(struct item *item, struct item **list, struct item **last)
  70 {
  71         if (*last)
  72                 (*last)->right = item;
  73         else
  74                 *list = item;
  75
  76         item->left = *last;
  77         item->right = NULL;
  78         *last = item;
  79 }
  80
  81 static void
  82 calcoffsets(void)
  83 {
  84         int i, n;
  85
  86         if (lines > 0)
  87                 n = lines * bh;
  88         else
  89                 n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
  90         /* calculate which items will begin the next page and previous page */
  91         for (i = 0, next = curr; next; next = next->right)
  92                 if ((i += (lines > 0) ? bh : textw_clamp(next->text, n)) > n)
  93                         break;
  94         for (i = 0, prev = curr; prev && prev->left; prev = prev->left)
  95                 if ((i += (lines > 0) ? bh : textw_clamp(prev->left->text, n)) > n)
  96                         break;
  97 }
  98
  99 static void
 100 cleanup(void)
 101 {
 102         size_t i;
 103
 104         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 105         for (i = 0; i < SchemeLast; i++)
 106                 free(scheme[i]);
 107         drw_free(drw);
 108         XSync(dpy, False);
 109         XCloseDisplay(dpy);
 110 }
 111
 112 static char *
 113 cistrstr(const char *h, const char *n)
 114 {
 115         size_t i;
 116
 117         if (!n[0])
 118                 return (char *)h;
 119
 120         for (; *h; ++h) {
 121                 for (i = 0; n[i] && tolower((unsigned char)n[i]) ==
 122                             tolower((unsigned char)h[i]); ++i)
 123                         ;
 124                 if (n[i] == '\0')
 125                         return (char *)h;
 126         }
 127         return NULL;
 128 }
 129
 130 static int
 131 drawitem(struct item *item, int x, int y, int w)
 132 {
 133         if (item == sel)
 134                 drw_setscheme(drw, scheme[SchemeSel]);
 135         else if (item->out)
 136                 drw_setscheme(drw, scheme[SchemeOut]);
 137         else
 138                 drw_setscheme(drw, scheme[SchemeNorm]);
 139
 140         return drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
 141 }
 142
 143 static void
 144 drawmenu(void)
 145 {
 146         unsigned int curpos;
 147         struct item *item;
 148         int x = 0, y = 0, w;
 149
 150         drw_setscheme(drw, scheme[SchemeNorm]);
 151         drw_rect(drw, 0, 0, mw, mh, 1, 1);
 152
 153         if (prompt && *prompt) {
 154                 drw_setscheme(drw, scheme[SchemeSel]);
 155                 x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
 156         }
 157         /* draw input field */
 158         w = (lines > 0 || !matches) ? mw - x : inputw;
 159         drw_setscheme(drw, scheme[SchemeNorm]);
 160         drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 161
 162         curpos = TEXTW(text) - TEXTW(&text[cursor]);
 163         if ((curpos += lrpad / 2 - 1) < w) {
 164                 drw_setscheme(drw, scheme[SchemeNorm]);
 165                 drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
 166         }
 167
 168         if (lines > 0) {
 169                 /* draw vertical list */
 170                 for (item = curr; item != next; item = item->right)
 171                         drawitem(item, x, y += bh, mw - x);
 172         } else if (matches) {
 173                 /* draw horizontal list */
 174                 x += inputw;
 175                 w = TEXTW("<");
 176                 if (curr->left) {
 177                         drw_setscheme(drw, scheme[SchemeNorm]);
 178                         drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
 179                 }
 180                 x += w;
 181                 for (item = curr; item != next; item = item->right)
 182                         x = drawitem(item, x, 0, textw_clamp(item->text, mw - x - TEXTW(">")));
 183                 if (next) {
 184                         w = TEXTW(">");
 185                         drw_setscheme(drw, scheme[SchemeNorm]);
 186                         drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
 187                 }
 188         }
 189         drw_map(drw, win, 0, 0, mw, mh);
 190 }
 191
 192 static void
 193 grabfocus(void)
 194 {
 195         struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000  };
 196         Window focuswin;
 197         int i, revertwin;
 198
 199         for (i = 0; i < 100; ++i) {
 200                 XGetInputFocus(dpy, &focuswin, &revertwin);
 201                 if (focuswin == win)
 202                         return;
 203                 XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
 204                 nanosleep(&ts, NULL);
 205         }
 206         die("cannot grab focus");
 207 }
 208
 209 static void
 210 grabkeyboard(void)
 211 {
 212         struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000  };
 213         int i;
 214
 215         if (embed)
 216                 return;
 217         /* try to grab keyboard, we may have to wait for another process to ungrab */
 218         for (i = 0; i < 1000; i++) {
 219                 if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
 220                                   GrabModeAsync, CurrentTime) == GrabSuccess)
 221                         return;
 222                 nanosleep(&ts, NULL);
 223         }
 224         die("cannot grab keyboard");
 225 }
 226
 227 static void
 228 match(void)
 229 {
 230         static char **tokv = NULL;
 231         static int tokn = 0;
 232
 233         char buf[sizeof text], *s;
 234         int i, tokc = 0;
 235         size_t len, textsize;
 236         struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
 237
 238         strcpy(buf, text);
 239         /* separate input text into tokens to be matched individually */
 240         for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
 241                 if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
 242                         die("cannot realloc %u bytes:", tokn * sizeof *tokv);
 243         len = tokc ? strlen(tokv[0]) : 0;
 244
 245         matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
 246         textsize = strlen(text) + 1;
 247         for (item = items; item && item->text; item++) {
 248                 for (i = 0; i < tokc; i++)
 249                         if (!fstrstr(item->text, tokv[i]))
 250                                 break;
 251                 if (i != tokc) /* not all tokens match */
 252                         continue;
 253                 /* exact matches go first, then prefixes, then substrings */
 254                 if (!tokc || !fstrncmp(text, item->text, textsize))
 255                         appenditem(item, &matches, &matchend);
 256                 else if (!fstrncmp(tokv[0], item->text, len))
 257                         appenditem(item, &lprefix, &prefixend);
 258                 else
 259                         appenditem(item, &lsubstr, &substrend);
 260         }
 261         if (lprefix) {
 262                 if (matches) {
 263                         matchend->right = lprefix;
 264                         lprefix->left = matchend;
 265                 } else
 266                         matches = lprefix;
 267                 matchend = prefixend;
 268         }
 269         if (lsubstr) {
 270                 if (matches) {
 271                         matchend->right = lsubstr;
 272                         lsubstr->left = matchend;
 273                 } else
 274                         matches = lsubstr;
 275                 matchend = substrend;
 276         }
 277         curr = sel = matches;
 278         calcoffsets();
 279 }
 280
 281 static void
 282 insert(const char *str, ssize_t n)
 283 {
 284         if (strlen(text) + n > sizeof text - 1)
 285                 return;
 286         /* move existing text out of the way, insert new text, and update cursor */
 287         memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
 288         if (n > 0)
 289                 memcpy(&text[cursor], str, n);
 290         cursor += n;
 291         match();
 292 }
 293
 294 static size_t
 295 nextrune(int inc)
 296 {
 297         ssize_t n;
 298
 299         /* return location of next utf8 rune in the given direction (+1 or -1) */
 300         for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
 301                 ;
 302         return n;
 303 }
 304
 305 static void
 306 movewordedge(int dir)
 307 {
 308         if (dir < 0) { /* move cursor to the start of the word*/
 309                 while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 310                         cursor = nextrune(-1);
 311                 while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 312                         cursor = nextrune(-1);
 313         } else { /* move cursor to the end of the word */
 314                 while (text[cursor] && strchr(worddelimiters, text[cursor]))
 315                         cursor = nextrune(+1);
 316                 while (text[cursor] && !strchr(worddelimiters, text[cursor]))
 317                         cursor = nextrune(+1);
 318         }
 319 }
 320
 321 static void
 322 keypress(XKeyEvent *ev)
 323 {
 324         char buf[32];
 325         int len;
 326         KeySym ksym;
 327         Status status;
 328
 329         len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
 330         switch (status) {
 331         default: /* XLookupNone, XBufferOverflow */
 332                 return;
 333         case XLookupChars:
 334                 goto insert;
 335         case XLookupKeySym:
 336         case XLookupBoth:
 337                 break;
 338         }
 339
 340         if (ev->state & ControlMask) {
 341                 switch(ksym) {
 342                 case XK_a: ksym = XK_Home;      break;
 343                 case XK_b: ksym = XK_Left;      break;
 344                 case XK_c: ksym = XK_Escape;    break;
 345                 case XK_d: ksym = XK_Delete;    break;
 346                 case XK_e: ksym = XK_End;       break;
 347                 case XK_f: ksym = XK_Right;     break;
 348                 case XK_g: ksym = XK_Escape;    break;
 349                 case XK_h: ksym = XK_BackSpace; break;
 350                 case XK_i: ksym = XK_Tab;       break;
 351                 case XK_j: /* fallthrough */
 352                 case XK_J: /* fallthrough */
 353                 case XK_m: /* fallthrough */
 354                 case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
 355                 case XK_n: ksym = XK_Down;      break;
 356                 case XK_p: ksym = XK_Up;        break;
 357
 358                 case XK_k: /* delete right */
 359                         text[cursor] = '\0';
 360                         match();
 361                         break;
 362                 case XK_u: /* delete left */
 363                         insert(NULL, 0 - cursor);
 364                         break;
 365                 case XK_w: /* delete word */
 366                         while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 367                                 insert(NULL, nextrune(-1) - cursor);
 368                         while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 369                                 insert(NULL, nextrune(-1) - cursor);
 370                         break;
 371                 case XK_y: /* paste selection */
 372                 case XK_Y:
 373                         XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
 374                                           utf8, utf8, win, CurrentTime);
 375                         return;
 376                 case XK_Left:
 377                 case XK_KP_Left:
 378                         movewordedge(-1);
 379                         goto draw;
 380                 case XK_Right:
 381                 case XK_KP_Right:
 382                         movewordedge(+1);
 383                         goto draw;
 384                 case XK_Return:
 385                 case XK_KP_Enter:
 386                         break;
 387                 case XK_bracketleft:
 388                         cleanup();
 389                         exit(1);
 390                 default:
 391                         return;
 392                 }
 393         } else if (ev->state & Mod1Mask) {
 394                 switch(ksym) {
 395                 case XK_b:
 396                         movewordedge(-1);
 397                         goto draw;
 398                 case XK_f:
 399                         movewordedge(+1);
 400                         goto draw;
 401                 case XK_g: ksym = XK_Home;  break;
 402                 case XK_G: ksym = XK_End;   break;
 403                 case XK_h: ksym = XK_Up;    break;
 404                 case XK_j: ksym = XK_Next;  break;
 405                 case XK_k: ksym = XK_Prior; break;
 406                 case XK_l: ksym = XK_Down;  break;
 407                 default:
 408                         return;
 409                 }
 410         }
 411
 412         switch(ksym) {
 413         default:
 414 insert:
 415                 if (!iscntrl(*buf))
 416                         insert(buf, len);
 417                 break;
 418         case XK_Delete:
 419         case XK_KP_Delete:
 420                 if (text[cursor] == '\0')
 421                         return;
 422                 cursor = nextrune(+1);
 423                 /* fallthrough */
 424         case XK_BackSpace:
 425                 if (cursor == 0)
 426                         return;
 427                 insert(NULL, nextrune(-1) - cursor);
 428                 break;
 429         case XK_End:
 430         case XK_KP_End:
 431                 if (text[cursor] != '\0') {
 432                         cursor = strlen(text);
 433                         break;
 434                 }
 435                 if (next) {
 436                         /* jump to end of list and position items in reverse */
 437                         curr = matchend;
 438                         calcoffsets();
 439                         curr = prev;
 440                         calcoffsets();
 441                         while (next && (curr = curr->right))
 442                                 calcoffsets();
 443                 }
 444                 sel = matchend;
 445                 break;
 446         case XK_Escape:
 447                 cleanup();
 448                 exit(1);
 449         case XK_Home:
 450         case XK_KP_Home:
 451                 if (sel == matches) {
 452                         cursor = 0;
 453                         break;
 454                 }
 455                 sel = curr = matches;
 456                 calcoffsets();
 457                 break;
 458         case XK_Left:
 459         case XK_KP_Left:
 460                 if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
 461                         cursor = nextrune(-1);
 462                         break;
 463                 }
 464                 if (lines > 0)
 465                         return;
 466                 /* fallthrough */
 467         case XK_Up:
 468         case XK_KP_Up:
 469                 if (sel && sel->left && (sel = sel->left)->right == curr) {
 470                         curr = prev;
 471                         calcoffsets();
 472                 }
 473                 break;
 474         case XK_Next:
 475         case XK_KP_Next:
 476                 if (!next)
 477                         return;
 478                 sel = curr = next;
 479                 calcoffsets();
 480                 break;
 481         case XK_Prior:
 482         case XK_KP_Prior:
 483                 if (!prev)
 484                         return;
 485                 sel = curr = prev;
 486                 calcoffsets();
 487                 break;
 488         case XK_Return:
 489         case XK_KP_Enter:
 490                 puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
 491                 if (!(ev->state & ControlMask)) {
 492                         cleanup();
 493                         exit(0);
 494                 }
 495                 if (sel)
 496                         sel->out = 1;
 497                 break;
 498         case XK_Right:
 499         case XK_KP_Right:
 500                 if (text[cursor] != '\0') {
 501                         cursor = nextrune(+1);
 502                         break;
 503                 }
 504                 if (lines > 0)
 505                         return;
 506                 /* fallthrough */
 507         case XK_Down:
 508         case XK_KP_Down:
 509                 if (sel && sel->right && (sel = sel->right) == next) {
 510                         curr = next;
 511                         calcoffsets();
 512                 }
 513                 break;
 514         case XK_Tab:
 515                 if (!sel)
 516                         return;
 517                 strncpy(text, sel->text, sizeof text - 1);
 518                 text[sizeof text - 1] = '\0';
 519                 cursor = strlen(text);
 520                 match();
 521                 break;
 522         }
 523
 524 draw:
 525         drawmenu();
 526 }
 527
 528 static void
 529 paste(void)
 530 {
 531         char *p, *q;
 532         int di;
 533         unsigned long dl;
 534         Atom da;
 535
 536         /* we have been given the current selection, now insert it into input */
 537         if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
 538                            utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
 539             == Success && p) {
 540                 insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
 541                 XFree(p);
 542         }
 543         drawmenu();
 544 }
 545
 546 static void
 547 readstdin(void)
 548 {
 549         char buf[sizeof text], *p;
 550         size_t i, imax = 0, size = 0;
 551         unsigned int tmpmax = 0;
 552
 553         /* read each line from stdin and add it to the item list */
 554         for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
 555                 if (i + 1 >= size / sizeof *items)
 556                         if (!(items = realloc(items, (size += BUFSIZ))))
 557                                 die("cannot realloc %u bytes:", size);
 558                 if ((p = strchr(buf, '\n')))
 559                         *p = '\0';
 560                 if (!(items[i].text = strdup(buf)))
 561                         die("cannot strdup %u bytes:", strlen(buf) + 1);
 562                 items[i].out = 0;
 563                 drw_font_getexts(drw->fonts, buf, strlen(buf), &tmpmax, NULL);
 564                 if (tmpmax > inputw) {
 565                         inputw = tmpmax;
 566                         imax = i;
 567                 }
 568         }
 569         if (items)
 570                 items[i].text = NULL;
 571         inputw = items ? TEXTW(items[imax].text) : 0;
 572         lines = MIN(lines, i);
 573 }
 574
 575 static void
 576 run(void)
 577 {
 578         XEvent ev;
 579
 580         while (!XNextEvent(dpy, &ev)) {
 581                 if (XFilterEvent(&ev, win))
 582                         continue;
 583                 switch(ev.type) {
 584                 case DestroyNotify:
 585                         if (ev.xdestroywindow.window != win)
 586                                 break;
 587                         cleanup();
 588                         exit(1);
 589                 case Expose:
 590                         if (ev.xexpose.count == 0)
 591                                 drw_map(drw, win, 0, 0, mw, mh);
 592                         break;
 593                 case FocusIn:
 594                         /* regrab focus from parent window */
 595                         if (ev.xfocus.window != win)
 596                                 grabfocus();
 597                         break;
 598                 case KeyPress:
 599                         keypress(&ev.xkey);
 600                         break;
 601                 case SelectionNotify:
 602                         if (ev.xselection.property == utf8)
 603                                 paste();
 604                         break;
 605                 case VisibilityNotify:
 606                         if (ev.xvisibility.state != VisibilityUnobscured)
 607                                 XRaiseWindow(dpy, win);
 608                         break;
 609                 }
 610         }
 611 }
 612
 613 static void
 614 setup(void)
 615 {
 616         int x, y, i, j;
 617         unsigned int du;
 618         XSetWindowAttributes swa;
 619         XIM xim;
 620         Window w, dw, *dws;
 621         XWindowAttributes wa;
 622         XClassHint ch = {"dmenu", "dmenu"};
 623 #ifdef XINERAMA
 624         XineramaScreenInfo *info;
 625         Window pw;
 626         int a, di, n, area = 0;
 627 #endif
 628         /* init appearance */
 629         for (j = 0; j < SchemeLast; j++)
 630                 scheme[j] = drw_scm_create(drw, colors[j], 2);
 631
 632         clip = XInternAtom(dpy, "CLIPBOARD",   False);
 633         utf8 = XInternAtom(dpy, "UTF8_STRING", False);
 634
 635         /* calculate menu geometry */
 636         bh = drw->fonts->h + 2;
 637         lines = MAX(lines, 0);
 638         mh = (lines + 1) * bh;
 639 #ifdef XINERAMA
 640         i = 0;
 641         if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
 642                 XGetInputFocus(dpy, &w, &di);
 643                 if (mon >= 0 && mon < n)
 644                         i = mon;
 645                 else if (w != root && w != PointerRoot && w != None) {
 646                         /* find top-level window containing current input focus */
 647                         do {
 648                                 if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
 649                                         XFree(dws);
 650                         } while (w != root && w != pw);
 651                         /* find xinerama screen with which the window intersects most */
 652                         if (XGetWindowAttributes(dpy, pw, &wa))
 653                                 for (j = 0; j < n; j++)
 654                                         if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
 655                                                 area = a;
 656                                                 i = j;
 657                                         }
 658                 }
 659                 /* no focused window is on screen, so use pointer location instead */
 660                 if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
 661                         for (i = 0; i < n; i++)
 662                                 if (INTERSECT(x, y, 1, 1, info[i]) != 0)
 663                                         break;
 664
 665                 x = info[i].x_org;
 666                 y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
 667                 mw = info[i].width;
 668                 XFree(info);
 669         } else
 670 #endif
 671         {
 672                 if (!XGetWindowAttributes(dpy, parentwin, &wa))
 673                         die("could not get embedding window attributes: 0x%lx",
 674                             parentwin);
 675                 x = 0;
 676                 y = topbar ? 0 : wa.height - mh;
 677                 mw = wa.width;
 678         }
 679         promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
 680         inputw = MIN(inputw, mw/3);
 681         match();
 682
 683         /* create menu window */
 684         swa.override_redirect = True;
 685         swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
 686         swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
 687         win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
 688                             CopyFromParent, CopyFromParent, CopyFromParent,
 689                             CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
 690         XSetClassHint(dpy, win, &ch);
 691
 692
 693         /* input methods */
 694         if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL)
 695                 die("XOpenIM failed: could not open input device");
 696
 697         xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
 698                         XNClientWindow, win, XNFocusWindow, win, NULL);
 699
 700         XMapRaised(dpy, win);
 701         if (embed) {
 702                 XSelectInput(dpy, parentwin, FocusChangeMask | SubstructureNotifyMask);
 703                 if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
 704                         for (i = 0; i < du && dws[i] != win; ++i)
 705                                 XSelectInput(dpy, dws[i], FocusChangeMask);
 706                         XFree(dws);
 707                 }
 708                 grabfocus();
 709         }
 710         drw_resize(drw, mw, mh);
 711         drawmenu();
 712 }
 713
 714 static void
 715 usage(void)
 716 {
 717         fputs("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 718               "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n", stderr);
 719         exit(1);
 720 }
 721
 722 int
 723 main(int argc, char *argv[])
 724 {
 725         XWindowAttributes wa;
 726         int i, fast = 0;
 727
 728         for (i = 1; i < argc; i++)
 729                 /* these options take no arguments */
 730                 if (!strcmp(argv[i], "-v")) {      /* prints version information */
 731                         puts("dmenu-"VERSION);
 732                         exit(0);
 733                 } else if (!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
 734                         topbar = 0;
 735                 else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
 736                         fast = 1;
 737                 else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
 738                         fstrncmp = strncasecmp;
 739                         fstrstr = cistrstr;
 740                 } else if (i + 1 == argc)
 741                         usage();
 742                 /* these options take one argument */
 743                 else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
 744                         lines = atoi(argv[++i]);
 745                 else if (!strcmp(argv[i], "-m"))
 746                         mon = atoi(argv[++i]);
 747                 else if (!strcmp(argv[i], "-p"))   /* adds prompt to left of input field */
 748                         prompt = argv[++i];
 749                 else if (!strcmp(argv[i], "-fn"))  /* font or font set */
 750                         fonts[0] = argv[++i];
 751                 else if (!strcmp(argv[i], "-nb"))  /* normal background color */
 752                         colors[SchemeNorm][ColBg] = argv[++i];
 753                 else if (!strcmp(argv[i], "-nf"))  /* normal foreground color */
 754                         colors[SchemeNorm][ColFg] = argv[++i];
 755                 else if (!strcmp(argv[i], "-sb"))  /* selected background color */
 756                         colors[SchemeSel][ColBg] = argv[++i];
 757                 else if (!strcmp(argv[i], "-sf"))  /* selected foreground color */
 758                         colors[SchemeSel][ColFg] = argv[++i];
 759                 else if (!strcmp(argv[i], "-w"))   /* embedding window id */
 760                         embed = argv[++i];
 761                 else
 762                         usage();
 763
 764         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 765                 fputs("warning: no locale support\n", stderr);
 766         if (!(dpy = XOpenDisplay(NULL)))
 767                 die("cannot open display");
 768         screen = DefaultScreen(dpy);
 769         root = RootWindow(dpy, screen);
 770         if (!embed || !(parentwin = strtol(embed, NULL, 0)))
 771                 parentwin = root;
 772         if (!XGetWindowAttributes(dpy, parentwin, &wa))
 773                 die("could not get embedding window attributes: 0x%lx",
 774                     parentwin);
 775         drw = drw_create(dpy, screen, root, wa.width, wa.height);
 776         if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
 777                 die("no fonts could be loaded.");
 778         lrpad = drw->fonts->h;
 779
 780 #ifdef __OpenBSD__
 781         if (pledge("stdio rpath", NULL) == -1)
 782                 die("pledge");
 783 #endif
 784
 785         if (fast && !isatty(0)) {
 786                 grabkeyboard();
 787                 readstdin();
 788         } else {
 789                 readstdin();
 790                 grabkeyboard();
 791         }
 792         setup();
 793         run();
 794
 795         return 1; /* unreachable */
 796 }