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 int
 100 max_textw(void)
 101 {
 102         int len = 0;
 103         for (struct item *item = items; item && item->text; item++)
 104                 len = MAX(TEXTW(item->text), len);
 105         return len;
 106 }
 107
 108 static void
 109 cleanup(void)
 110 {
 111         size_t i;
 112
 113         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 114         for (i = 0; i < SchemeLast; i++)
 115                 free(scheme[i]);
 116         for (i = 0; items && items[i].text; ++i)
 117                 free(items[i].text);
 118         free(items);
 119         drw_free(drw);
 120         XSync(dpy, False);
 121         XCloseDisplay(dpy);
 122 }
 123
 124 static char *
 125 cistrstr(const char *h, const char *n)
 126 {
 127         size_t i;
 128
 129         if (!n[0])
 130                 return (char *)h;
 131
 132         for (; *h; ++h) {
 133                 for (i = 0; n[i] && tolower((unsigned char)n[i]) ==
 134                             tolower((unsigned char)h[i]); ++i)
 135                         ;
 136                 if (n[i] == '\0')
 137                         return (char *)h;
 138         }
 139         return NULL;
 140 }
 141
 142 static int
 143 drawitem(struct item *item, int x, int y, int w)
 144 {
 145         if (item == sel)
 146                 drw_setscheme(drw, scheme[SchemeSel]);
 147         else if (item->out)
 148                 drw_setscheme(drw, scheme[SchemeOut]);
 149         else
 150                 drw_setscheme(drw, scheme[SchemeNorm]);
 151
 152         return drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
 153 }
 154
 155 static void
 156 drawmenu(void)
 157 {
 158         unsigned int curpos;
 159         struct item *item;
 160         int x = 0, y = 0, w;
 161
 162         drw_setscheme(drw, scheme[SchemeNorm]);
 163         drw_rect(drw, 0, 0, mw, mh, 1, 1);
 164
 165         if (prompt && *prompt) {
 166                 drw_setscheme(drw, scheme[SchemeSel]);
 167                 x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
 168         }
 169         /* draw input field */
 170         w = (lines > 0 || !matches) ? mw - x : inputw;
 171         drw_setscheme(drw, scheme[SchemeNorm]);
 172         drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 173
 174         curpos = TEXTW(text) - TEXTW(&text[cursor]);
 175         if ((curpos += lrpad / 2 - 1) < w) {
 176                 drw_setscheme(drw, scheme[SchemeNorm]);
 177                 drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
 178         }
 179
 180         if (lines > 0) {
 181                 /* draw vertical list */
 182                 for (item = curr; item != next; item = item->right)
 183                         drawitem(item, x, y += bh, mw - x);
 184         } else if (matches) {
 185                 /* draw horizontal list */
 186                 x += inputw;
 187                 w = TEXTW("<");
 188                 if (curr->left) {
 189                         drw_setscheme(drw, scheme[SchemeNorm]);
 190                         drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
 191                 }
 192                 x += w;
 193                 for (item = curr; item != next; item = item->right)
 194                         x = drawitem(item, x, 0, textw_clamp(item->text, mw - x - TEXTW(">")));
 195                 if (next) {
 196                         w = TEXTW(">");
 197                         drw_setscheme(drw, scheme[SchemeNorm]);
 198                         drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
 199                 }
 200         }
 201         drw_map(drw, win, 0, 0, mw, mh);
 202 }
 203
 204 static void
 205 grabfocus(void)
 206 {
 207         struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000  };
 208         Window focuswin;
 209         int i, revertwin;
 210
 211         for (i = 0; i < 100; ++i) {
 212                 XGetInputFocus(dpy, &focuswin, &revertwin);
 213                 if (focuswin == win)
 214                         return;
 215                 XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
 216                 nanosleep(&ts, NULL);
 217         }
 218         die("cannot grab focus");
 219 }
 220
 221 static void
 222 grabkeyboard(void)
 223 {
 224         struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000  };
 225         int i;
 226
 227         if (embed)
 228                 return;
 229         /* try to grab keyboard, we may have to wait for another process to ungrab */
 230         for (i = 0; i < 1000; i++) {
 231                 if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
 232                                   GrabModeAsync, CurrentTime) == GrabSuccess)
 233                         return;
 234                 nanosleep(&ts, NULL);
 235         }
 236         die("cannot grab keyboard");
 237 }
 238
 239 static void
 240 match(void)
 241 {
 242         static char **tokv = NULL;
 243         static int tokn = 0;
 244
 245         char buf[sizeof text], *s;
 246         int i, tokc = 0;
 247         size_t len, textsize;
 248         struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
 249
 250         strcpy(buf, text);
 251         /* separate input text into tokens to be matched individually */
 252         for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
 253                 if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
 254                         die("cannot realloc %zu bytes:", tokn * sizeof *tokv);
 255         len = tokc ? strlen(tokv[0]) : 0;
 256
 257         matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
 258         textsize = strlen(text) + 1;
 259         for (item = items; item && item->text; item++) {
 260                 for (i = 0; i < tokc; i++)
 261                         if (!fstrstr(item->text, tokv[i]))
 262                                 break;
 263                 if (i != tokc) /* not all tokens match */
 264                         continue;
 265                 /* exact matches go first, then prefixes, then substrings */
 266                 if (!tokc || !fstrncmp(text, item->text, textsize))
 267                         appenditem(item, &matches, &matchend);
 268                 else if (!fstrncmp(tokv[0], item->text, len))
 269                         appenditem(item, &lprefix, &prefixend);
 270                 else
 271                         appenditem(item, &lsubstr, &substrend);
 272         }
 273         if (lprefix) {
 274                 if (matches) {
 275                         matchend->right = lprefix;
 276                         lprefix->left = matchend;
 277                 } else
 278                         matches = lprefix;
 279                 matchend = prefixend;
 280         }
 281         if (lsubstr) {
 282                 if (matches) {
 283                         matchend->right = lsubstr;
 284                         lsubstr->left = matchend;
 285                 } else
 286                         matches = lsubstr;
 287                 matchend = substrend;
 288         }
 289         curr = sel = matches;
 290         calcoffsets();
 291 }
 292
 293 static void
 294 insert(const char *str, ssize_t n)
 295 {
 296         if (strlen(text) + n > sizeof text - 1)
 297                 return;
 298         /* move existing text out of the way, insert new text, and update cursor */
 299         memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
 300         if (n > 0)
 301                 memcpy(&text[cursor], str, n);
 302         cursor += n;
 303         match();
 304 }
 305
 306 static size_t
 307 nextrune(int inc)
 308 {
 309         ssize_t n;
 310
 311         /* return location of next utf8 rune in the given direction (+1 or -1) */
 312         for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
 313                 ;
 314         return n;
 315 }
 316
 317 static void
 318 movewordedge(int dir)
 319 {
 320         if (dir < 0) { /* move cursor to the start of the word*/
 321                 while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 322                         cursor = nextrune(-1);
 323                 while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 324                         cursor = nextrune(-1);
 325         } else { /* move cursor to the end of the word */
 326                 while (text[cursor] && strchr(worddelimiters, text[cursor]))
 327                         cursor = nextrune(+1);
 328                 while (text[cursor] && !strchr(worddelimiters, text[cursor]))
 329                         cursor = nextrune(+1);
 330         }
 331 }
 332
 333 static void
 334 keypress(XKeyEvent *ev)
 335 {
 336         char buf[32];
 337         int len;
 338         KeySym ksym;
 339         Status status;
 340
 341         len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
 342         switch (status) {
 343         default: /* XLookupNone, XBufferOverflow */
 344                 return;
 345         case XLookupChars:
 346                 goto insert;
 347         case XLookupKeySym:
 348         case XLookupBoth:
 349                 break;
 350         }
 351
 352         if (ev->state & ControlMask) {
 353                 switch(ksym) {
 354                 case XK_a: ksym = XK_Home;      break;
 355                 case XK_b: ksym = XK_Left;      break;
 356                 case XK_c: ksym = XK_Escape;    break;
 357                 case XK_d: ksym = XK_Delete;    break;
 358                 case XK_e: ksym = XK_End;       break;
 359                 case XK_f: ksym = XK_Right;     break;
 360                 case XK_g: ksym = XK_Escape;    break;
 361                 case XK_h: ksym = XK_BackSpace; break;
 362                 case XK_i: ksym = XK_Tab;       break;
 363                 case XK_j: /* fallthrough */
 364                 case XK_J: /* fallthrough */
 365                 case XK_m: /* fallthrough */
 366                 case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
 367                 case XK_n: ksym = XK_Down;      break;
 368                 case XK_p: ksym = XK_Up;        break;
 369
 370                 case XK_k: /* delete right */
 371                         text[cursor] = '\0';
 372                         match();
 373                         break;
 374                 case XK_u: /* delete left */
 375                         insert(NULL, 0 - cursor);
 376                         break;
 377                 case XK_w: /* delete word */
 378                         while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 379                                 insert(NULL, nextrune(-1) - cursor);
 380                         while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 381                                 insert(NULL, nextrune(-1) - cursor);
 382                         break;
 383                 case XK_y: /* paste selection */
 384                 case XK_Y:
 385                         XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
 386                                           utf8, utf8, win, CurrentTime);
 387                         return;
 388                 case XK_Left:
 389                 case XK_KP_Left:
 390                         movewordedge(-1);
 391                         goto draw;
 392                 case XK_Right:
 393                 case XK_KP_Right:
 394                         movewordedge(+1);
 395                         goto draw;
 396                 case XK_Return:
 397                 case XK_KP_Enter:
 398                         break;
 399                 case XK_bracketleft:
 400                         cleanup();
 401                         exit(1);
 402                 default:
 403                         return;
 404                 }
 405         } else if (ev->state & Mod1Mask) {
 406                 switch(ksym) {
 407                 case XK_b:
 408                         movewordedge(-1);
 409                         goto draw;
 410                 case XK_f:
 411                         movewordedge(+1);
 412                         goto draw;
 413                 case XK_g: ksym = XK_Home;  break;
 414                 case XK_G: ksym = XK_End;   break;
 415                 case XK_h: ksym = XK_Up;    break;
 416                 case XK_j: ksym = XK_Next;  break;
 417                 case XK_k: ksym = XK_Prior; break;
 418                 case XK_l: ksym = XK_Down;  break;
 419                 default:
 420                         return;
 421                 }
 422         }
 423
 424         switch(ksym) {
 425         default:
 426 insert:
 427                 if (!iscntrl((unsigned char)*buf))
 428                         insert(buf, len);
 429                 break;
 430         case XK_Delete:
 431         case XK_KP_Delete:
 432                 if (text[cursor] == '\0')
 433                         return;
 434                 cursor = nextrune(+1);
 435                 /* fallthrough */
 436         case XK_BackSpace:
 437                 if (cursor == 0)
 438                         return;
 439                 insert(NULL, nextrune(-1) - cursor);
 440                 break;
 441         case XK_End:
 442         case XK_KP_End:
 443                 if (text[cursor] != '\0') {
 444                         cursor = strlen(text);
 445                         break;
 446                 }
 447                 if (next) {
 448                         /* jump to end of list and position items in reverse */
 449                         curr = matchend;
 450                         calcoffsets();
 451                         curr = prev;
 452                         calcoffsets();
 453                         while (next && (curr = curr->right))
 454                                 calcoffsets();
 455                 }
 456                 sel = matchend;
 457                 break;
 458         case XK_Escape:
 459                 cleanup();
 460                 exit(1);
 461         case XK_Home:
 462         case XK_KP_Home:
 463                 if (sel == matches) {
 464                         cursor = 0;
 465                         break;
 466                 }
 467                 sel = curr = matches;
 468                 calcoffsets();
 469                 break;
 470         case XK_Left:
 471         case XK_KP_Left:
 472                 if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
 473                         cursor = nextrune(-1);
 474                         break;
 475                 }
 476                 if (lines > 0)
 477                         return;
 478                 /* fallthrough */
 479         case XK_Up:
 480         case XK_KP_Up:
 481                 if (sel && sel->left && (sel = sel->left)->right == curr) {
 482                         curr = prev;
 483                         calcoffsets();
 484                 }
 485                 break;
 486         case XK_Next:
 487         case XK_KP_Next:
 488                 if (!next)
 489                         return;
 490                 sel = curr = next;
 491                 calcoffsets();
 492                 break;
 493         case XK_Prior:
 494         case XK_KP_Prior:
 495                 if (!prev)
 496                         return;
 497                 sel = curr = prev;
 498                 calcoffsets();
 499                 break;
 500         case XK_Return:
 501         case XK_KP_Enter:
 502                 puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
 503                 if (!(ev->state & ControlMask)) {
 504                         cleanup();
 505                         exit(0);
 506                 }
 507                 if (sel)
 508                         sel->out = 1;
 509                 break;
 510         case XK_Right:
 511         case XK_KP_Right:
 512                 if (text[cursor] != '\0') {
 513                         cursor = nextrune(+1);
 514                         break;
 515                 }
 516                 if (lines > 0)
 517                         return;
 518                 /* fallthrough */
 519         case XK_Down:
 520         case XK_KP_Down:
 521                 if (sel && sel->right && (sel = sel->right) == next) {
 522                         curr = next;
 523                         calcoffsets();
 524                 }
 525                 break;
 526         case XK_Tab:
 527                 if (!sel)
 528                         return;
 529                 strncpy(text, sel->text, sizeof text - 1);
 530                 text[sizeof text - 1] = '\0';
 531                 cursor = strlen(text);
 532                 match();
 533                 break;
 534         }
 535
 536 draw:
 537         drawmenu();
 538 }
 539
 540 static void
 541 paste(void)
 542 {
 543         char *p, *q;
 544         int di;
 545         unsigned long dl;
 546         Atom da;
 547
 548         /* we have been given the current selection, now insert it into input */
 549         if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
 550                            utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
 551             == Success && p) {
 552                 insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
 553                 XFree(p);
 554         }
 555         drawmenu();
 556 }
 557
 558 static void
 559 readstdin(void)
 560 {
 561         char buf[sizeof text], *p;
 562         size_t i, size = 0;
 563
 564         /* read each line from stdin and add it to the item list */
 565         for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
 566                 if (i + 1 >= size / sizeof *items)
 567                         if (!(items = realloc(items, (size += BUFSIZ))))
 568                                 die("cannot realloc %zu bytes:", size);
 569                 if ((p = strchr(buf, '\n')))
 570                         *p = '\0';
 571                 if (!(items[i].text = strdup(buf)))
 572                         die("cannot strdup %zu bytes:", strlen(buf) + 1);
 573                 items[i].out = 0;
 574         }
 575         if (items)
 576                 items[i].text = NULL;
 577         lines = MIN(lines, i);
 578 }
 579
 580 static void
 581 run(void)
 582 {
 583         XEvent ev;
 584
 585         while (!XNextEvent(dpy, &ev)) {
 586                 if (XFilterEvent(&ev, win))
 587                         continue;
 588                 switch(ev.type) {
 589                 case DestroyNotify:
 590                         if (ev.xdestroywindow.window != win)
 591                                 break;
 592                         cleanup();
 593                         exit(1);
 594                 case Expose:
 595                         if (ev.xexpose.count == 0)
 596                                 drw_map(drw, win, 0, 0, mw, mh);
 597                         break;
 598                 case FocusIn:
 599                         /* regrab focus from parent window */
 600                         if (ev.xfocus.window != win)
 601                                 grabfocus();
 602                         break;
 603                 case KeyPress:
 604                         keypress(&ev.xkey);
 605                         break;
 606                 case SelectionNotify:
 607                         if (ev.xselection.property == utf8)
 608                                 paste();
 609                         break;
 610                 case VisibilityNotify:
 611                         if (ev.xvisibility.state != VisibilityUnobscured)
 612                                 XRaiseWindow(dpy, win);
 613                         break;
 614                 }
 615         }
 616 }
 617
 618 static void
 619 setup(void)
 620 {
 621         int x, y, i, j;
 622         unsigned int du, tmp;
 623         XSetWindowAttributes swa;
 624         XIM xim;
 625         Window w, dw, *dws;
 626         XWindowAttributes wa;
 627         XClassHint ch = {"dmenu", "dmenu"};
 628         struct item *item;
 629 #ifdef XINERAMA
 630         XineramaScreenInfo *info;
 631         Window pw;
 632         int a, di, n, area = 0;
 633 #endif
 634         /* init appearance */
 635         for (j = 0; j < SchemeLast; j++)
 636                 scheme[j] = drw_scm_create(drw, colors[j], 2);
 637
 638         clip = XInternAtom(dpy, "CLIPBOARD",   False);
 639         utf8 = XInternAtom(dpy, "UTF8_STRING", False);
 640
 641         /* calculate menu geometry */
 642         bh = drw->fonts->h + 2;
 643         lines = MAX(lines, 0);
 644         mh = (lines + 1) * bh;
 645         promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
 646 #ifdef XINERAMA
 647         i = 0;
 648         if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
 649                 XGetInputFocus(dpy, &w, &di);
 650                 if (mon >= 0 && mon < n)
 651                         i = mon;
 652                 else if (w != root && w != PointerRoot && w != None) {
 653                         /* find top-level window containing current input focus */
 654                         do {
 655                                 if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
 656                                         XFree(dws);
 657                         } while (w != root && w != pw);
 658                         /* find xinerama screen with which the window intersects most */
 659                         if (XGetWindowAttributes(dpy, pw, &wa))
 660                                 for (j = 0; j < n; j++)
 661                                         if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
 662                                                 area = a;
 663                                                 i = j;
 664                                         }
 665                 }
 666                 /* no focused window is on screen, so use pointer location instead */
 667                 if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
 668                         for (i = 0; i < n; i++)
 669                                 if (INTERSECT(x, y, 1, 1, info[i]) != 0)
 670                                         break;
 671
 672                 if (centered) {
 673                         mw = MIN(MAX(max_textw() + promptw, min_width), info[i].width);
 674                         x = info[i].x_org + ((info[i].width  - mw) / 2);
 675                         y = info[i].y_org + ((info[i].height - mh) / 2);
 676                 } else {
 677                         x = info[i].x_org;
 678                         y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
 679                         mw = info[i].width;
 680                 }
 681
 682                 XFree(info);
 683         } else
 684 #endif
 685         {
 686                 if (!XGetWindowAttributes(dpy, parentwin, &wa))
 687                         die("could not get embedding window attributes: 0x%lx",
 688                             parentwin);
 689
 690                 if (centered) {
 691                         mw = MIN(MAX(max_textw() + promptw, min_width), wa.width);
 692                         x = (wa.width  - mw) / 2;
 693                         y = (wa.height - mh) / 2;
 694                 } else {
 695                         x = 0;
 696                         y = topbar ? 0 : wa.height - mh;
 697                         mw = wa.width;
 698                 }
 699         }
 700         for (item = items; item && item->text; ++item) {
 701                 if ((tmp = textw_clamp(item->text, mw/3)) > inputw) {
 702                         if ((inputw = tmp) == mw/3)
 703                                 break;
 704                 }
 705         }
 706         match();
 707
 708         /* create menu window */
 709         swa.override_redirect = True;
 710         swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
 711         swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
 712         win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
 713                             CopyFromParent, CopyFromParent, CopyFromParent,
 714                             CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
 715         XSetClassHint(dpy, win, &ch);
 716
 717
 718         /* input methods */
 719         if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL)
 720                 die("XOpenIM failed: could not open input device");
 721
 722         xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
 723                         XNClientWindow, win, XNFocusWindow, win, NULL);
 724
 725         XMapRaised(dpy, win);
 726         if (embed) {
 727                 XSelectInput(dpy, parentwin, FocusChangeMask | SubstructureNotifyMask);
 728                 if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
 729                         for (i = 0; i < du && dws[i] != win; ++i)
 730                                 XSelectInput(dpy, dws[i], FocusChangeMask);
 731                         XFree(dws);
 732                 }
 733                 grabfocus();
 734         }
 735         drw_resize(drw, mw, mh);
 736         drawmenu();
 737 }
 738
 739 static void
 740 usage(void)
 741 {
 742         fputs("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 743               "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n", stderr);
 744         exit(1);
 745 }
 746
 747 int
 748 main(int argc, char *argv[])
 749 {
 750         XWindowAttributes wa;
 751         int i, fast = 0;
 752
 753         for (i = 1; i < argc; i++)
 754                 /* these options take no arguments */
 755                 if (!strcmp(argv[i], "-v")) {      /* prints version information */
 756                         puts("dmenu-"VERSION);
 757                         exit(0);
 758                 } else if (!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
 759                         topbar = 0;
 760                 else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
 761                         fast = 1;
 762                 else if (!strcmp(argv[i], "-c"))   /* centers dmenu on screen */
 763                         centered = 1;
 764                 else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
 765                         fstrncmp = strncasecmp;
 766                         fstrstr = cistrstr;
 767                 } else if (i + 1 == argc)
 768                         usage();
 769                 /* these options take one argument */
 770                 else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
 771                         lines = atoi(argv[++i]);
 772                 else if (!strcmp(argv[i], "-m"))
 773                         mon = atoi(argv[++i]);
 774                 else if (!strcmp(argv[i], "-p"))   /* adds prompt to left of input field */
 775                         prompt = argv[++i];
 776                 else if (!strcmp(argv[i], "-fn"))  /* font or font set */
 777                         fonts[0] = argv[++i];
 778                 else if (!strcmp(argv[i], "-nb"))  /* normal background color */
 779                         colors[SchemeNorm][ColBg] = argv[++i];
 780                 else if (!strcmp(argv[i], "-nf"))  /* normal foreground color */
 781                         colors[SchemeNorm][ColFg] = argv[++i];
 782                 else if (!strcmp(argv[i], "-sb"))  /* selected background color */
 783                         colors[SchemeSel][ColBg] = argv[++i];
 784                 else if (!strcmp(argv[i], "-sf"))  /* selected foreground color */
 785                         colors[SchemeSel][ColFg] = argv[++i];
 786                 else if (!strcmp(argv[i], "-w"))   /* embedding window id */
 787                         embed = argv[++i];
 788                 else
 789                         usage();
 790
 791         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 792                 fputs("warning: no locale support\n", stderr);
 793         if (!(dpy = XOpenDisplay(NULL)))
 794                 die("cannot open display");
 795         screen = DefaultScreen(dpy);
 796         root = RootWindow(dpy, screen);
 797         if (!embed || !(parentwin = strtol(embed, NULL, 0)))
 798                 parentwin = root;
 799         if (!XGetWindowAttributes(dpy, parentwin, &wa))
 800                 die("could not get embedding window attributes: 0x%lx",
 801                     parentwin);
 802         drw = drw_create(dpy, screen, root, wa.width, wa.height);
 803         if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
 804                 die("no fonts could be loaded.");
 805         lrpad = drw->fonts->h;
 806
 807 #ifdef __OpenBSD__
 808         if (pledge("stdio rpath", NULL) == -1)
 809                 die("pledge");
 810 #endif
 811
 812         if (fast && !isatty(0)) {
 813                 grabkeyboard();
 814                 readstdin();
 815         } else {
 816                 readstdin();
 817                 grabkeyboard();
 818         }
 819         setup();
 820         run();
 821
 822         return 1; /* unreachable */
 823 }