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 TEXTW(X)              (drw_fontset_getwidth(drw, (X)) + lrpad)
  26
  27 /* enums */
  28 enum { SchemeNorm, SchemeSel, SchemeOut, SchemeLast }; /* color schemes */
  29
  30 struct item {
  31         char *text;
  32         struct item *left, *right;
  33         int out;
  34 };
  35
  36 static char text[BUFSIZ] = "";
  37 static char *embed;
  38 static int bh, mw, mh;
  39 static int inputw = 0, promptw;
  40 static int lrpad; /* sum of left and right padding */
  41 static size_t cursor;
  42 static struct item *items = NULL;
  43 static struct item *matches, *matchend;
  44 static struct item *prev, *curr, *next, *sel;
  45 static int mon = -1, screen;
  46
  47 static Atom clip, utf8;
  48 static Display *dpy;
  49 static Window root, parentwin, win;
  50 static XIC xic;
  51
  52 static Drw *drw;
  53 static Clr *scheme[SchemeLast];
  54
  55 #include "config.h"
  56
  57 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
  58 static char *(*fstrstr)(const char *, const char *) = strstr;
  59
  60 static unsigned int
  61 textw_clamp(const char *str, unsigned int n)
  62 {
  63         unsigned int w = drw_fontset_getwidth_clamp(drw, str, n) + lrpad;
  64         return MIN(w, n);
  65 }
  66
  67 static void
  68 appenditem(struct item *item, struct item **list, struct item **last)
  69 {
  70         if (*last)
  71                 (*last)->right = item;
  72         else
  73                 *list = item;
  74
  75         item->left = *last;
  76         item->right = NULL;
  77         *last = item;
  78 }
  79
  80 static void
  81 calcoffsets(void)
  82 {
  83         int i, n;
  84
  85         if (lines > 0)
  86                 n = lines * bh;
  87         else
  88                 n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
  89         /* calculate which items will begin the next page and previous page */
  90         for (i = 0, next = curr; next; next = next->right)
  91                 if ((i += (lines > 0) ? bh : textw_clamp(next->text, n)) > n)
  92                         break;
  93         for (i = 0, prev = curr; prev && prev->left; prev = prev->left)
  94                 if ((i += (lines > 0) ? bh : textw_clamp(prev->left->text, n)) > n)
  95                         break;
  96 }
  97
  98 static void
  99 cleanup(void)
 100 {
 101         size_t i;
 102
 103         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 104         for (i = 0; i < SchemeLast; i++)
 105                 free(scheme[i]);
 106         for (i = 0; items && items[i].text; ++i)
 107                 free(items[i].text);
 108         free(items);
 109         drw_free(drw);
 110         XSync(dpy, False);
 111         XCloseDisplay(dpy);
 112 }
 113
 114 static char *
 115 cistrstr(const char *h, const char *n)
 116 {
 117         size_t i;
 118
 119         if (!n[0])
 120                 return (char *)h;
 121
 122         for (; *h; ++h) {
 123                 for (i = 0; n[i] && tolower((unsigned char)n[i]) ==
 124                             tolower((unsigned char)h[i]); ++i)
 125                         ;
 126                 if (n[i] == '\0')
 127                         return (char *)h;
 128         }
 129         return NULL;
 130 }
 131
 132 static int
 133 drawitem(struct item *item, int x, int y, int w)
 134 {
 135         if (item == sel)
 136                 drw_setscheme(drw, scheme[SchemeSel]);
 137         else if (item->out)
 138                 drw_setscheme(drw, scheme[SchemeOut]);
 139         else
 140                 drw_setscheme(drw, scheme[SchemeNorm]);
 141
 142         return drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
 143 }
 144
 145 static void
 146 drawmenu(void)
 147 {
 148         unsigned int curpos;
 149         struct item *item;
 150         int x = 0, y = 0, w;
 151
 152         drw_setscheme(drw, scheme[SchemeNorm]);
 153         drw_rect(drw, 0, 0, mw, mh, 1, 1);
 154
 155         if (prompt && *prompt) {
 156                 drw_setscheme(drw, scheme[SchemeSel]);
 157                 x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
 158         }
 159         /* draw input field */
 160         w = (lines > 0 || !matches) ? mw - x : inputw;
 161         drw_setscheme(drw, scheme[SchemeNorm]);
 162         drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 163
 164         curpos = TEXTW(text) - TEXTW(&text[cursor]);
 165         if ((curpos += lrpad / 2 - 1) < w) {
 166                 drw_setscheme(drw, scheme[SchemeNorm]);
 167                 drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
 168         }
 169
 170         if (lines > 0) {
 171                 /* draw vertical list */
 172                 for (item = curr; item != next; item = item->right)
 173                         drawitem(item, x, y += bh, mw - x);
 174         } else if (matches) {
 175                 /* draw horizontal list */
 176                 x += inputw;
 177                 w = TEXTW("<");
 178                 if (curr->left) {
 179                         drw_setscheme(drw, scheme[SchemeNorm]);
 180                         drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
 181                 }
 182                 x += w;
 183                 for (item = curr; item != next; item = item->right)
 184                         x = drawitem(item, x, 0, textw_clamp(item->text, mw - x - TEXTW(">")));
 185                 if (next) {
 186                         w = TEXTW(">");
 187                         drw_setscheme(drw, scheme[SchemeNorm]);
 188                         drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
 189                 }
 190         }
 191         drw_map(drw, win, 0, 0, mw, mh);
 192 }
 193
 194 static void
 195 grabfocus(void)
 196 {
 197         struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000  };
 198         Window focuswin;
 199         int i, revertwin;
 200
 201         for (i = 0; i < 100; ++i) {
 202                 XGetInputFocus(dpy, &focuswin, &revertwin);
 203                 if (focuswin == win)
 204                         return;
 205                 XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
 206                 nanosleep(&ts, NULL);
 207         }
 208         die("cannot grab focus");
 209 }
 210
 211 static void
 212 grabkeyboard(void)
 213 {
 214         struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000  };
 215         int i;
 216
 217         if (embed)
 218                 return;
 219         /* try to grab keyboard, we may have to wait for another process to ungrab */
 220         for (i = 0; i < 1000; i++) {
 221                 if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
 222                                   GrabModeAsync, CurrentTime) == GrabSuccess)
 223                         return;
 224                 nanosleep(&ts, NULL);
 225         }
 226         die("cannot grab keyboard");
 227 }
 228
 229 static void
 230 match(void)
 231 {
 232         static char **tokv = NULL;
 233         static int tokn = 0;
 234
 235         char buf[sizeof text], *s;
 236         int i, tokc = 0;
 237         size_t len, textsize;
 238         struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
 239
 240         strcpy(buf, text);
 241         /* separate input text into tokens to be matched individually */
 242         for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
 243                 if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
 244                         die("cannot realloc %zu bytes:", tokn * sizeof *tokv);
 245         len = tokc ? strlen(tokv[0]) : 0;
 246
 247         matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
 248         textsize = strlen(text) + 1;
 249         for (item = items; item && item->text; item++) {
 250                 for (i = 0; i < tokc; i++)
 251                         if (!fstrstr(item->text, tokv[i]))
 252                                 break;
 253                 if (i != tokc) /* not all tokens match */
 254                         continue;
 255                 /* exact matches go first, then prefixes, then substrings */
 256                 if (!tokc || !fstrncmp(text, item->text, textsize))
 257                         appenditem(item, &matches, &matchend);
 258                 else if (!fstrncmp(tokv[0], item->text, len))
 259                         appenditem(item, &lprefix, &prefixend);
 260                 else
 261                         appenditem(item, &lsubstr, &substrend);
 262         }
 263         if (lprefix) {
 264                 if (matches) {
 265                         matchend->right = lprefix;
 266                         lprefix->left = matchend;
 267                 } else
 268                         matches = lprefix;
 269                 matchend = prefixend;
 270         }
 271         if (lsubstr) {
 272                 if (matches) {
 273                         matchend->right = lsubstr;
 274                         lsubstr->left = matchend;
 275                 } else
 276                         matches = lsubstr;
 277                 matchend = substrend;
 278         }
 279         curr = sel = matches;
 280         calcoffsets();
 281 }
 282
 283 static void
 284 insert(const char *str, ssize_t n)
 285 {
 286         if (strlen(text) + n > sizeof text - 1)
 287                 return;
 288         /* move existing text out of the way, insert new text, and update cursor */
 289         memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
 290         if (n > 0)
 291                 memcpy(&text[cursor], str, n);
 292         cursor += n;
 293         match();
 294 }
 295
 296 static size_t
 297 nextrune(int inc)
 298 {
 299         ssize_t n;
 300
 301         /* return location of next utf8 rune in the given direction (+1 or -1) */
 302         for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
 303                 ;
 304         return n;
 305 }
 306
 307 static void
 308 movewordedge(int dir)
 309 {
 310         if (dir < 0) { /* move cursor to the start of the word*/
 311                 while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 312                         cursor = nextrune(-1);
 313                 while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 314                         cursor = nextrune(-1);
 315         } else { /* move cursor to the end of the word */
 316                 while (text[cursor] && strchr(worddelimiters, text[cursor]))
 317                         cursor = nextrune(+1);
 318                 while (text[cursor] && !strchr(worddelimiters, text[cursor]))
 319                         cursor = nextrune(+1);
 320         }
 321 }
 322
 323 static void
 324 keypress(XKeyEvent *ev)
 325 {
 326         char buf[64];
 327         int len;
 328         KeySym ksym = NoSymbol;
 329         Status status;
 330
 331         len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
 332         switch (status) {
 333         default: /* XLookupNone, XBufferOverflow */
 334                 return;
 335         case XLookupChars: /* composed string from input method */
 336                 goto insert;
 337         case XLookupKeySym:
 338         case XLookupBoth: /* a KeySym and a string are returned: use keysym */
 339                 break;
 340         }
 341
 342         if (ev->state & ControlMask) {
 343                 switch(ksym) {
 344                 case XK_a: ksym = XK_Home;      break;
 345                 case XK_b: ksym = XK_Left;      break;
 346                 case XK_c: ksym = XK_Escape;    break;
 347                 case XK_d: ksym = XK_Delete;    break;
 348                 case XK_e: ksym = XK_End;       break;
 349                 case XK_f: ksym = XK_Right;     break;
 350                 case XK_g: ksym = XK_Escape;    break;
 351                 case XK_h: ksym = XK_BackSpace; break;
 352                 case XK_i: ksym = XK_Tab;       break;
 353                 case XK_j: /* fallthrough */
 354                 case XK_J: /* fallthrough */
 355                 case XK_m: /* fallthrough */
 356                 case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
 357                 case XK_n: ksym = XK_Down;      break;
 358                 case XK_p: ksym = XK_Up;        break;
 359
 360                 case XK_k: /* delete right */
 361                         text[cursor] = '\0';
 362                         match();
 363                         break;
 364                 case XK_u: /* delete left */
 365                         insert(NULL, 0 - cursor);
 366                         break;
 367                 case XK_w: /* delete word */
 368                         while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 369                                 insert(NULL, nextrune(-1) - cursor);
 370                         while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 371                                 insert(NULL, nextrune(-1) - cursor);
 372                         break;
 373                 case XK_y: /* paste selection */
 374                 case XK_Y:
 375                         XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
 376                                           utf8, utf8, win, CurrentTime);
 377                         return;
 378                 case XK_Left:
 379                 case XK_KP_Left:
 380                         movewordedge(-1);
 381                         goto draw;
 382                 case XK_Right:
 383                 case XK_KP_Right:
 384                         movewordedge(+1);
 385                         goto draw;
 386                 case XK_Return:
 387                 case XK_KP_Enter:
 388                         break;
 389                 case XK_bracketleft:
 390                         cleanup();
 391                         exit(1);
 392                 default:
 393                         return;
 394                 }
 395         } else if (ev->state & Mod1Mask) {
 396                 switch(ksym) {
 397                 case XK_b:
 398                         movewordedge(-1);
 399                         goto draw;
 400                 case XK_f:
 401                         movewordedge(+1);
 402                         goto draw;
 403                 case XK_g: ksym = XK_Home;  break;
 404                 case XK_G: ksym = XK_End;   break;
 405                 case XK_h: ksym = XK_Up;    break;
 406                 case XK_j: ksym = XK_Next;  break;
 407                 case XK_k: ksym = XK_Prior; break;
 408                 case XK_l: ksym = XK_Down;  break;
 409                 default:
 410                         return;
 411                 }
 412         }
 413
 414         switch(ksym) {
 415         default:
 416 insert:
 417                 if (!iscntrl((unsigned char)*buf))
 418                         insert(buf, len);
 419                 break;
 420         case XK_Delete:
 421         case XK_KP_Delete:
 422                 if (text[cursor] == '\0')
 423                         return;
 424                 cursor = nextrune(+1);
 425                 /* fallthrough */
 426         case XK_BackSpace:
 427                 if (cursor == 0)
 428                         return;
 429                 insert(NULL, nextrune(-1) - cursor);
 430                 break;
 431         case XK_End:
 432         case XK_KP_End:
 433                 if (text[cursor] != '\0') {
 434                         cursor = strlen(text);
 435                         break;
 436                 }
 437                 if (next) {
 438                         /* jump to end of list and position items in reverse */
 439                         curr = matchend;
 440                         calcoffsets();
 441                         curr = prev;
 442                         calcoffsets();
 443                         while (next && (curr = curr->right))
 444                                 calcoffsets();
 445                 }
 446                 sel = matchend;
 447                 break;
 448         case XK_Escape:
 449                 cleanup();
 450                 exit(1);
 451         case XK_Home:
 452         case XK_KP_Home:
 453                 if (sel == matches) {
 454                         cursor = 0;
 455                         break;
 456                 }
 457                 sel = curr = matches;
 458                 calcoffsets();
 459                 break;
 460         case XK_Left:
 461         case XK_KP_Left:
 462                 if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
 463                         cursor = nextrune(-1);
 464                         break;
 465                 }
 466                 if (lines > 0)
 467                         return;
 468                 /* fallthrough */
 469         case XK_Up:
 470         case XK_KP_Up:
 471                 if (sel && sel->left && (sel = sel->left)->right == curr) {
 472                         curr = prev;
 473                         calcoffsets();
 474                 }
 475                 break;
 476         case XK_Next:
 477         case XK_KP_Next:
 478                 if (!next)
 479                         return;
 480                 sel = curr = next;
 481                 calcoffsets();
 482                 break;
 483         case XK_Prior:
 484         case XK_KP_Prior:
 485                 if (!prev)
 486                         return;
 487                 sel = curr = prev;
 488                 calcoffsets();
 489                 break;
 490         case XK_Return:
 491         case XK_KP_Enter:
 492                 puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
 493                 if (!(ev->state & ControlMask)) {
 494                         cleanup();
 495                         exit(0);
 496                 }
 497                 if (sel)
 498                         sel->out = 1;
 499                 break;
 500         case XK_Right:
 501         case XK_KP_Right:
 502                 if (text[cursor] != '\0') {
 503                         cursor = nextrune(+1);
 504                         break;
 505                 }
 506                 if (lines > 0)
 507                         return;
 508                 /* fallthrough */
 509         case XK_Down:
 510         case XK_KP_Down:
 511                 if (sel && sel->right && (sel = sel->right) == next) {
 512                         curr = next;
 513                         calcoffsets();
 514                 }
 515                 break;
 516         case XK_Tab:
 517                 if (!sel)
 518                         return;
 519                 cursor = strnlen(sel->text, sizeof text - 1);
 520                 memcpy(text, sel->text, cursor);
 521                 text[cursor] = '\0';
 522                 match();
 523                 break;
 524         }
 525
 526 draw:
 527         drawmenu();
 528 }
 529
 530 static void
 531 paste(void)
 532 {
 533         char *p, *q;
 534         int di;
 535         unsigned long dl;
 536         Atom da;
 537
 538         /* we have been given the current selection, now insert it into input */
 539         if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
 540                            utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
 541             == Success && p) {
 542                 insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
 543                 XFree(p);
 544         }
 545         drawmenu();
 546 }
 547
 548 static void
 549 readstdin(void)
 550 {
 551         char *line = NULL;
 552         size_t i, itemsiz = 0, linesiz = 0;
 553         ssize_t len;
 554
 555         /* read each line from stdin and add it to the item list */
 556         for (i = 0; (len = getline(&line, &linesiz, stdin)) != -1; i++) {
 557                 if (i + 1 >= itemsiz) {
 558                         itemsiz += 256;
 559                         if (!(items = realloc(items, itemsiz * sizeof(*items))))
 560                                 die("cannot realloc %zu bytes:", itemsiz * sizeof(*items));
 561                 }
 562                 if (line[len - 1] == '\n')
 563                         line[len - 1] = '\0';
 564                 if (!(items[i].text = strdup(line)))
 565                         die("strdup:");
 566
 567                 items[i].out = 0;
 568         }
 569         free(line);
 570         if (items)
 571                 items[i].text = NULL;
 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 = mw / 3; /* input width: ~33% of monitor width */
 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, root, 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                 XReparentWindow(dpy, win, parentwin, x, y);
 703                 XSelectInput(dpy, parentwin, FocusChangeMask | SubstructureNotifyMask);
 704                 if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
 705                         for (i = 0; i < du && dws[i] != win; ++i)
 706                                 XSelectInput(dpy, dws[i], FocusChangeMask);
 707                         XFree(dws);
 708                 }
 709                 grabfocus();
 710         }
 711         drw_resize(drw, mw, mh);
 712         drawmenu();
 713 }
 714
 715 static void
 716 usage(void)
 717 {
 718         die("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 719             "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]");
 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 }