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         for (i = 0; items && items[i].text; ++i)
 108                 free(items[i].text);
 109         free(items);
 110         drw_free(drw);
 111         XSync(dpy, False);
 112         XCloseDisplay(dpy);
 113 }
 114
 115 static char *
 116 cistrstr(const char *h, const char *n)
 117 {
 118         size_t i;
 119
 120         if (!n[0])
 121                 return (char *)h;
 122
 123         for (; *h; ++h) {
 124                 for (i = 0; n[i] && tolower((unsigned char)n[i]) ==
 125                             tolower((unsigned char)h[i]); ++i)
 126                         ;
 127                 if (n[i] == '\0')
 128                         return (char *)h;
 129         }
 130         return NULL;
 131 }
 132
 133 static int
 134 drawitem(struct item *item, int x, int y, int w)
 135 {
 136         if (item == sel)
 137                 drw_setscheme(drw, scheme[SchemeSel]);
 138         else if (item->out)
 139                 drw_setscheme(drw, scheme[SchemeOut]);
 140         else
 141                 drw_setscheme(drw, scheme[SchemeNorm]);
 142
 143         return drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
 144 }
 145
 146 static void
 147 drawmenu(void)
 148 {
 149         unsigned int curpos;
 150         struct item *item;
 151         int x = 0, y = 0, w;
 152
 153         drw_setscheme(drw, scheme[SchemeNorm]);
 154         drw_rect(drw, 0, 0, mw, mh, 1, 1);
 155
 156         if (prompt && *prompt) {
 157                 drw_setscheme(drw, scheme[SchemeSel]);
 158                 x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
 159         }
 160         /* draw input field */
 161         w = (lines > 0 || !matches) ? mw - x : inputw;
 162         drw_setscheme(drw, scheme[SchemeNorm]);
 163         drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 164
 165         curpos = TEXTW(text) - TEXTW(&text[cursor]);
 166         if ((curpos += lrpad / 2 - 1) < w) {
 167                 drw_setscheme(drw, scheme[SchemeNorm]);
 168                 drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
 169         }
 170
 171         if (lines > 0) {
 172                 /* draw vertical list */
 173                 for (item = curr; item != next; item = item->right)
 174                         drawitem(item, x, y += bh, mw - x);
 175         } else if (matches) {
 176                 /* draw horizontal list */
 177                 x += inputw;
 178                 w = TEXTW("<");
 179                 if (curr->left) {
 180                         drw_setscheme(drw, scheme[SchemeNorm]);
 181                         drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
 182                 }
 183                 x += w;
 184                 for (item = curr; item != next; item = item->right)
 185                         x = drawitem(item, x, 0, textw_clamp(item->text, mw - x - TEXTW(">")));
 186                 if (next) {
 187                         w = TEXTW(">");
 188                         drw_setscheme(drw, scheme[SchemeNorm]);
 189                         drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
 190                 }
 191         }
 192         drw_map(drw, win, 0, 0, mw, mh);
 193 }
 194
 195 static void
 196 grabfocus(void)
 197 {
 198         struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000  };
 199         Window focuswin;
 200         int i, revertwin;
 201
 202         for (i = 0; i < 100; ++i) {
 203                 XGetInputFocus(dpy, &focuswin, &revertwin);
 204                 if (focuswin == win)
 205                         return;
 206                 XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
 207                 nanosleep(&ts, NULL);
 208         }
 209         die("cannot grab focus");
 210 }
 211
 212 static void
 213 grabkeyboard(void)
 214 {
 215         struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000  };
 216         int i;
 217
 218         if (embed)
 219                 return;
 220         /* try to grab keyboard, we may have to wait for another process to ungrab */
 221         for (i = 0; i < 1000; i++) {
 222                 if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
 223                                   GrabModeAsync, CurrentTime) == GrabSuccess)
 224                         return;
 225                 nanosleep(&ts, NULL);
 226         }
 227         die("cannot grab keyboard");
 228 }
 229
 230 static void
 231 match(void)
 232 {
 233         static char **tokv = NULL;
 234         static int tokn = 0;
 235
 236         char buf[sizeof text], *s;
 237         int i, tokc = 0;
 238         size_t len, textsize;
 239         struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
 240
 241         strcpy(buf, text);
 242         /* separate input text into tokens to be matched individually */
 243         for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
 244                 if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
 245                         die("cannot realloc %zu bytes:", tokn * sizeof *tokv);
 246         len = tokc ? strlen(tokv[0]) : 0;
 247
 248         matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
 249         textsize = strlen(text) + 1;
 250         for (item = items; item && item->text; item++) {
 251                 for (i = 0; i < tokc; i++)
 252                         if (!fstrstr(item->text, tokv[i]))
 253                                 break;
 254                 if (i != tokc) /* not all tokens match */
 255                         continue;
 256                 /* exact matches go first, then prefixes, then substrings */
 257                 if (!tokc || !fstrncmp(text, item->text, textsize))
 258                         appenditem(item, &matches, &matchend);
 259                 else if (!fstrncmp(tokv[0], item->text, len))
 260                         appenditem(item, &lprefix, &prefixend);
 261                 else
 262                         appenditem(item, &lsubstr, &substrend);
 263         }
 264         if (lprefix) {
 265                 if (matches) {
 266                         matchend->right = lprefix;
 267                         lprefix->left = matchend;
 268                 } else
 269                         matches = lprefix;
 270                 matchend = prefixend;
 271         }
 272         if (lsubstr) {
 273                 if (matches) {
 274                         matchend->right = lsubstr;
 275                         lsubstr->left = matchend;
 276                 } else
 277                         matches = lsubstr;
 278                 matchend = substrend;
 279         }
 280         curr = sel = matches;
 281         calcoffsets();
 282 }
 283
 284 static void
 285 insert(const char *str, ssize_t n)
 286 {
 287         if (strlen(text) + n > sizeof text - 1)
 288                 return;
 289         /* move existing text out of the way, insert new text, and update cursor */
 290         memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
 291         if (n > 0)
 292                 memcpy(&text[cursor], str, n);
 293         cursor += n;
 294         match();
 295 }
 296
 297 static size_t
 298 nextrune(int inc)
 299 {
 300         ssize_t n;
 301
 302         /* return location of next utf8 rune in the given direction (+1 or -1) */
 303         for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
 304                 ;
 305         return n;
 306 }
 307
 308 static void
 309 movewordedge(int dir)
 310 {
 311         if (dir < 0) { /* move cursor to the start of the word*/
 312                 while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 313                         cursor = nextrune(-1);
 314                 while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 315                         cursor = nextrune(-1);
 316         } else { /* move cursor to the end of the word */
 317                 while (text[cursor] && strchr(worddelimiters, text[cursor]))
 318                         cursor = nextrune(+1);
 319                 while (text[cursor] && !strchr(worddelimiters, text[cursor]))
 320                         cursor = nextrune(+1);
 321         }
 322 }
 323
 324 static void
 325 keypress(XKeyEvent *ev)
 326 {
 327         char buf[32];
 328         int len;
 329         KeySym ksym;
 330         Status status;
 331
 332         len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
 333         switch (status) {
 334         default: /* XLookupNone, XBufferOverflow */
 335                 return;
 336         case XLookupChars:
 337                 goto insert;
 338         case XLookupKeySym:
 339         case XLookupBoth:
 340                 break;
 341         }
 342
 343         if (ev->state & ControlMask) {
 344                 switch(ksym) {
 345                 case XK_a: ksym = XK_Home;      break;
 346                 case XK_b: ksym = XK_Left;      break;
 347                 case XK_c: ksym = XK_Escape;    break;
 348                 case XK_d: ksym = XK_Delete;    break;
 349                 case XK_e: ksym = XK_End;       break;
 350                 case XK_f: ksym = XK_Right;     break;
 351                 case XK_g: ksym = XK_Escape;    break;
 352                 case XK_h: ksym = XK_BackSpace; break;
 353                 case XK_i: ksym = XK_Tab;       break;
 354                 case XK_j: /* fallthrough */
 355                 case XK_J: /* fallthrough */
 356                 case XK_m: /* fallthrough */
 357                 case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
 358                 case XK_n: ksym = XK_Down;      break;
 359                 case XK_p: ksym = XK_Up;        break;
 360
 361                 case XK_k: /* delete right */
 362                         text[cursor] = '\0';
 363                         match();
 364                         break;
 365                 case XK_u: /* delete left */
 366                         insert(NULL, 0 - cursor);
 367                         break;
 368                 case XK_w: /* delete word */
 369                         while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 370                                 insert(NULL, nextrune(-1) - cursor);
 371                         while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 372                                 insert(NULL, nextrune(-1) - cursor);
 373                         break;
 374                 case XK_y: /* paste selection */
 375                 case XK_Y:
 376                         XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
 377                                           utf8, utf8, win, CurrentTime);
 378                         return;
 379                 case XK_Left:
 380                 case XK_KP_Left:
 381                         movewordedge(-1);
 382                         goto draw;
 383                 case XK_Right:
 384                 case XK_KP_Right:
 385                         movewordedge(+1);
 386                         goto draw;
 387                 case XK_Return:
 388                 case XK_KP_Enter:
 389                         break;
 390                 case XK_bracketleft:
 391                         cleanup();
 392                         exit(1);
 393                 default:
 394                         return;
 395                 }
 396         } else if (ev->state & Mod1Mask) {
 397                 switch(ksym) {
 398                 case XK_b:
 399                         movewordedge(-1);
 400                         goto draw;
 401                 case XK_f:
 402                         movewordedge(+1);
 403                         goto draw;
 404                 case XK_g: ksym = XK_Home;  break;
 405                 case XK_G: ksym = XK_End;   break;
 406                 case XK_h: ksym = XK_Up;    break;
 407                 case XK_j: ksym = XK_Next;  break;
 408                 case XK_k: ksym = XK_Prior; break;
 409                 case XK_l: ksym = XK_Down;  break;
 410                 default:
 411                         return;
 412                 }
 413         }
 414
 415         switch(ksym) {
 416         default:
 417 insert:
 418                 if (!iscntrl((unsigned char)*buf))
 419                         insert(buf, len);
 420                 break;
 421         case XK_Delete:
 422         case XK_KP_Delete:
 423                 if (text[cursor] == '\0')
 424                         return;
 425                 cursor = nextrune(+1);
 426                 /* fallthrough */
 427         case XK_BackSpace:
 428                 if (cursor == 0)
 429                         return;
 430                 insert(NULL, nextrune(-1) - cursor);
 431                 break;
 432         case XK_End:
 433         case XK_KP_End:
 434                 if (text[cursor] != '\0') {
 435                         cursor = strlen(text);
 436                         break;
 437                 }
 438                 if (next) {
 439                         /* jump to end of list and position items in reverse */
 440                         curr = matchend;
 441                         calcoffsets();
 442                         curr = prev;
 443                         calcoffsets();
 444                         while (next && (curr = curr->right))
 445                                 calcoffsets();
 446                 }
 447                 sel = matchend;
 448                 break;
 449         case XK_Escape:
 450                 cleanup();
 451                 exit(1);
 452         case XK_Home:
 453         case XK_KP_Home:
 454                 if (sel == matches) {
 455                         cursor = 0;
 456                         break;
 457                 }
 458                 sel = curr = matches;
 459                 calcoffsets();
 460                 break;
 461         case XK_Left:
 462         case XK_KP_Left:
 463                 if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
 464                         cursor = nextrune(-1);
 465                         break;
 466                 }
 467                 if (lines > 0)
 468                         return;
 469                 /* fallthrough */
 470         case XK_Up:
 471         case XK_KP_Up:
 472                 if (sel && sel->left && (sel = sel->left)->right == curr) {
 473                         curr = prev;
 474                         calcoffsets();
 475                 }
 476                 break;
 477         case XK_Next:
 478         case XK_KP_Next:
 479                 if (!next)
 480                         return;
 481                 sel = curr = next;
 482                 calcoffsets();
 483                 break;
 484         case XK_Prior:
 485         case XK_KP_Prior:
 486                 if (!prev)
 487                         return;
 488                 sel = curr = prev;
 489                 calcoffsets();
 490                 break;
 491         case XK_Return:
 492         case XK_KP_Enter:
 493                 puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
 494                 if (!(ev->state & ControlMask)) {
 495                         cleanup();
 496                         exit(0);
 497                 }
 498                 if (sel)
 499                         sel->out = 1;
 500                 break;
 501         case XK_Right:
 502         case XK_KP_Right:
 503                 if (text[cursor] != '\0') {
 504                         cursor = nextrune(+1);
 505                         break;
 506                 }
 507                 if (lines > 0)
 508                         return;
 509                 /* fallthrough */
 510         case XK_Down:
 511         case XK_KP_Down:
 512                 if (sel && sel->right && (sel = sel->right) == next) {
 513                         curr = next;
 514                         calcoffsets();
 515                 }
 516                 break;
 517         case XK_Tab:
 518                 if (!sel)
 519                         return;
 520                 strncpy(text, sel->text, sizeof text - 1);
 521                 text[sizeof text - 1] = '\0';
 522                 cursor = strlen(text);
 523                 match();
 524                 break;
 525         }
 526
 527 draw:
 528         drawmenu();
 529 }
 530
 531 static void
 532 paste(void)
 533 {
 534         char *p, *q;
 535         int di;
 536         unsigned long dl;
 537         Atom da;
 538
 539         /* we have been given the current selection, now insert it into input */
 540         if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
 541                            utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
 542             == Success && p) {
 543                 insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
 544                 XFree(p);
 545         }
 546         drawmenu();
 547 }
 548
 549 static void
 550 readstdin(void)
 551 {
 552         char buf[sizeof text], *p;
 553         size_t i, size = 0;
 554
 555         /* read each line from stdin and add it to the item list */
 556         for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
 557                 if (i + 1 >= size / sizeof *items)
 558                         if (!(items = realloc(items, (size += BUFSIZ))))
 559                                 die("cannot realloc %zu bytes:", size);
 560                 if ((p = strchr(buf, '\n')))
 561                         *p = '\0';
 562                 if (!(items[i].text = strdup(buf)))
 563                         die("cannot strdup %zu bytes:", strlen(buf) + 1);
 564                 items[i].out = 0;
 565         }
 566         if (items)
 567                 items[i].text = NULL;
 568         lines = MIN(lines, i);
 569 }
 570
 571 static void
 572 run(void)
 573 {
 574         XEvent ev;
 575
 576         while (!XNextEvent(dpy, &ev)) {
 577                 if (XFilterEvent(&ev, win))
 578                         continue;
 579                 switch(ev.type) {
 580                 case DestroyNotify:
 581                         if (ev.xdestroywindow.window != win)
 582                                 break;
 583                         cleanup();
 584                         exit(1);
 585                 case Expose:
 586                         if (ev.xexpose.count == 0)
 587                                 drw_map(drw, win, 0, 0, mw, mh);
 588                         break;
 589                 case FocusIn:
 590                         /* regrab focus from parent window */
 591                         if (ev.xfocus.window != win)
 592                                 grabfocus();
 593                         break;
 594                 case KeyPress:
 595                         keypress(&ev.xkey);
 596                         break;
 597                 case SelectionNotify:
 598                         if (ev.xselection.property == utf8)
 599                                 paste();
 600                         break;
 601                 case VisibilityNotify:
 602                         if (ev.xvisibility.state != VisibilityUnobscured)
 603                                 XRaiseWindow(dpy, win);
 604                         break;
 605                 }
 606         }
 607 }
 608
 609 static void
 610 setup(void)
 611 {
 612         int x, y, i, j;
 613         unsigned int du, tmp;
 614         XSetWindowAttributes swa;
 615         XIM xim;
 616         Window w, dw, *dws;
 617         XWindowAttributes wa;
 618         XClassHint ch = {"dmenu", "dmenu"};
 619         struct item *item;
 620 #ifdef XINERAMA
 621         XineramaScreenInfo *info;
 622         Window pw;
 623         int a, di, n, area = 0;
 624 #endif
 625         /* init appearance */
 626         for (j = 0; j < SchemeLast; j++)
 627                 scheme[j] = drw_scm_create(drw, colors[j], 2);
 628
 629         clip = XInternAtom(dpy, "CLIPBOARD",   False);
 630         utf8 = XInternAtom(dpy, "UTF8_STRING", False);
 631
 632         /* calculate menu geometry */
 633         bh = drw->fonts->h + 2;
 634         lines = MAX(lines, 0);
 635         mh = (lines + 1) * bh;
 636 #ifdef XINERAMA
 637         i = 0;
 638         if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
 639                 XGetInputFocus(dpy, &w, &di);
 640                 if (mon >= 0 && mon < n)
 641                         i = mon;
 642                 else if (w != root && w != PointerRoot && w != None) {
 643                         /* find top-level window containing current input focus */
 644                         do {
 645                                 if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
 646                                         XFree(dws);
 647                         } while (w != root && w != pw);
 648                         /* find xinerama screen with which the window intersects most */
 649                         if (XGetWindowAttributes(dpy, pw, &wa))
 650                                 for (j = 0; j < n; j++)
 651                                         if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
 652                                                 area = a;
 653                                                 i = j;
 654                                         }
 655                 }
 656                 /* no focused window is on screen, so use pointer location instead */
 657                 if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
 658                         for (i = 0; i < n; i++)
 659                                 if (INTERSECT(x, y, 1, 1, info[i]) != 0)
 660                                         break;
 661
 662                 x = info[i].x_org;
 663                 y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
 664                 mw = info[i].width;
 665                 XFree(info);
 666         } else
 667 #endif
 668         {
 669                 if (!XGetWindowAttributes(dpy, parentwin, &wa))
 670                         die("could not get embedding window attributes: 0x%lx",
 671                             parentwin);
 672                 x = 0;
 673                 y = topbar ? 0 : wa.height - mh;
 674                 mw = wa.width;
 675         }
 676         promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
 677         for (item = items; item && item->text; ++item) {
 678                 if ((tmp = textw_clamp(item->text, mw/3)) > inputw) {
 679                         if ((inputw = tmp) == mw/3)
 680                                 break;
 681                 }
 682         }
 683         match();
 684
 685         /* create menu window */
 686         swa.override_redirect = True;
 687         swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
 688         swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
 689         win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
 690                             CopyFromParent, CopyFromParent, CopyFromParent,
 691                             CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
 692         XSetClassHint(dpy, win, &ch);
 693
 694
 695         /* input methods */
 696         if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL)
 697                 die("XOpenIM failed: could not open input device");
 698
 699         xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
 700                         XNClientWindow, win, XNFocusWindow, win, NULL);
 701
 702         XMapRaised(dpy, win);
 703         if (embed) {
 704                 XSelectInput(dpy, parentwin, FocusChangeMask | SubstructureNotifyMask);
 705                 if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
 706                         for (i = 0; i < du && dws[i] != win; ++i)
 707                                 XSelectInput(dpy, dws[i], FocusChangeMask);
 708                         XFree(dws);
 709                 }
 710                 grabfocus();
 711         }
 712         drw_resize(drw, mw, mh);
 713         drawmenu();
 714 }
 715
 716 static void
 717 usage(void)
 718 {
 719         fputs("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 720               "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n", stderr);
 721         exit(1);
 722 }
 723
 724 int
 725 main(int argc, char *argv[])
 726 {
 727         XWindowAttributes wa;
 728         int i, fast = 0;
 729
 730         for (i = 1; i < argc; i++)
 731                 /* these options take no arguments */
 732                 if (!strcmp(argv[i], "-v")) {      /* prints version information */
 733                         puts("dmenu-"VERSION);
 734                         exit(0);
 735                 } else if (!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
 736                         topbar = 0;
 737                 else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
 738                         fast = 1;
 739                 else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
 740                         fstrncmp = strncasecmp;
 741                         fstrstr = cistrstr;
 742                 } else if (i + 1 == argc)
 743                         usage();
 744                 /* these options take one argument */
 745                 else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
 746                         lines = atoi(argv[++i]);
 747                 else if (!strcmp(argv[i], "-m"))
 748                         mon = atoi(argv[++i]);
 749                 else if (!strcmp(argv[i], "-p"))   /* adds prompt to left of input field */
 750                         prompt = argv[++i];
 751                 else if (!strcmp(argv[i], "-fn"))  /* font or font set */
 752                         fonts[0] = argv[++i];
 753                 else if (!strcmp(argv[i], "-nb"))  /* normal background color */
 754                         colors[SchemeNorm][ColBg] = argv[++i];
 755                 else if (!strcmp(argv[i], "-nf"))  /* normal foreground color */
 756                         colors[SchemeNorm][ColFg] = argv[++i];
 757                 else if (!strcmp(argv[i], "-sb"))  /* selected background color */
 758                         colors[SchemeSel][ColBg] = argv[++i];
 759                 else if (!strcmp(argv[i], "-sf"))  /* selected foreground color */
 760                         colors[SchemeSel][ColFg] = argv[++i];
 761                 else if (!strcmp(argv[i], "-w"))   /* embedding window id */
 762                         embed = argv[++i];
 763                 else
 764                         usage();
 765
 766         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 767                 fputs("warning: no locale support\n", stderr);
 768         if (!(dpy = XOpenDisplay(NULL)))
 769                 die("cannot open display");
 770         screen = DefaultScreen(dpy);
 771         root = RootWindow(dpy, screen);
 772         if (!embed || !(parentwin = strtol(embed, NULL, 0)))
 773                 parentwin = root;
 774         if (!XGetWindowAttributes(dpy, parentwin, &wa))
 775                 die("could not get embedding window attributes: 0x%lx",
 776                     parentwin);
 777         drw = drw_create(dpy, screen, root, wa.width, wa.height);
 778         if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
 779                 die("no fonts could be loaded.");
 780         lrpad = drw->fonts->h;
 781
 782 #ifdef __OpenBSD__
 783         if (pledge("stdio rpath", NULL) == -1)
 784                 die("pledge");
 785 #endif
 786
 787         if (fast && !isatty(0)) {
 788                 grabkeyboard();
 789                 readstdin();
 790         } else {
 791                 readstdin();
 792                 grabkeyboard();
 793         }
 794         setup();
 795         run();
 796
 797         return 1; /* unreachable */
 798 }