dmenu.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <ctype.h>
   3 #include <locale.h>
   4 #include <stdarg.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <strings.h>
   9 #include <unistd.h>
  10 #include <X11/keysym.h>
  11 #include <X11/Xlib.h>
  12 #include <X11/Xutil.h>
  13 #ifdef XINERAMA
  14 #include <X11/extensions/Xinerama.h>
  15 #endif
  16
  17 /* macros */
  18 #define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
  19
  20 /* enums */
  21 enum { ColFG, ColBG, ColLast };
  22
  23 /* typedefs */
  24 typedef unsigned int uint;
  25 typedef unsigned long ulong;
  26 typedef struct {
  27         int x, y, w, h;
  28         ulong norm[ColLast];
  29         ulong sel[ColLast];
  30         Drawable drawable;
  31         GC gc;
  32         struct {
  33                 XFontStruct *xfont;
  34                 XFontSet set;
  35                 int ascent;
  36                 int descent;
  37                 int height;
  38         } font;
  39 } DC; /* draw context */
  40
  41 typedef struct Item Item;
  42 struct Item {
  43         char *text;
  44         Item *next;             /* traverses all items */
  45         Item *left, *right;     /* traverses items matching current search pattern */
  46 };
  47
  48 /* forward declarations */
  49 static void appenditem(Item *i, Item **list, Item **last);
  50 static void calcoffsets(void);
  51 static char *cistrstr(const char *s, const char *sub);
  52 static void cleanup(void);
  53 static void drawmenu(void);
  54 static void drawtext(const char *text, ulong col[ColLast]);
  55 static void *emalloc(uint size);
  56 static void eprint(const char *errstr, ...);
  57 static ulong getcolor(const char *colstr);
  58 static Bool grabkeyboard(void);
  59 static void initfont(const char *fontstr);
  60 static void kpress(XKeyEvent * e);
  61 static void match(char *pattern);
  62 static void readstdin(void);
  63 static void run(void);
  64 static void setup(Bool topbar);
  65 static int textnw(const char *text, uint len);
  66 static int textw(const char *text);
  67
  68 #include "config.h"
  69
  70 /* variables */
  71 static char *font = FONT;
  72 static char *maxname = NULL;
  73 static char *normbg = NORMBGCOLOR;
  74 static char *normfg = NORMFGCOLOR;
  75 static char *prompt = NULL;
  76 static char *selbg = SELBGCOLOR;
  77 static char *selfg = SELFGCOLOR;
  78 static char text[4096];
  79 static int cmdw = 0;
  80 static int promptw = 0;
  81 static int ret = 0;
  82 static int screen;
  83 static uint mw, mh;
  84 static uint numlockmask = 0;
  85 static Bool running = True;
  86 static Display *dpy;
  87 static DC dc = {0};
  88 static Item *allitems = NULL;   /* first of all items */
  89 static Item *item = NULL;       /* first of pattern matching items */
  90 static Item *sel = NULL;
  91 static Item *next = NULL;
  92 static Item *prev = NULL;
  93 static Item *curr = NULL;
  94 static Window root, win;
  95 static int (*fstrncmp)(const char *, const char *, size_t n) = strncmp;
  96 static char *(*fstrstr)(const char *, const char *) = strstr;
  97
  98 void
  99 appenditem(Item *i, Item **list, Item **last) {
 100         if(!(*last))
 101                 *list = i;
 102         else
 103                 (*last)->right = i;
 104         i->left = *last;
 105         i->right = NULL;
 106         *last = i;
 107 }
 108
 109 void
 110 calcoffsets(void) {
 111         int tw;
 112         uint w;
 113
 114         if(!curr)
 115                 return;
 116         w = promptw + cmdw + 2 * spaceitem;
 117         for(next = curr; next; next=next->right) {
 118                 tw = textw(next->text);
 119                 if(tw > mw / 3)
 120                         tw = mw / 3;
 121                 w += tw;
 122                 if(w > mw)
 123                         break;
 124         }
 125         w = promptw + cmdw + 2 * spaceitem;
 126         for(prev = curr; prev && prev->left; prev=prev->left) {
 127                 tw = textw(prev->left->text);
 128                 if(tw > mw / 3)
 129                         tw = mw / 3;
 130                 w += tw;
 131                 if(w > mw)
 132                         break;
 133         }
 134 }
 135
 136 char *
 137 cistrstr(const char *s, const char *sub) {
 138         int c, csub;
 139         uint len;
 140
 141         if(!sub)
 142                 return (char *)s;
 143         if((c = *sub++) != 0) {
 144                 c = tolower(c);
 145                 len = strlen(sub);
 146                 do {
 147                         do {
 148                                 if((csub = *s++) == 0)
 149                                         return (NULL);
 150                         }
 151                         while(tolower(csub) != c);
 152                 }
 153                 while(strncasecmp(s, sub, len) != 0);
 154                 s--;
 155         }
 156         return (char *)s;
 157 }
 158
 159 void
 160 cleanup(void) {
 161         Item *itm;
 162
 163         while(allitems) {
 164                 itm = allitems->next;
 165                 free(allitems->text);
 166                 free(allitems);
 167                 allitems = itm;
 168         }
 169         if(dc.font.set)
 170                 XFreeFontSet(dpy, dc.font.set);
 171         else
 172                 XFreeFont(dpy, dc.font.xfont);
 173         XFreePixmap(dpy, dc.drawable);
 174         XFreeGC(dpy, dc.gc);
 175         XDestroyWindow(dpy, win);
 176         XUngrabKeyboard(dpy, CurrentTime);
 177 }
 178
 179 void
 180 drawmenu(void) {
 181         Item *i;
 182
 183         dc.x = 0;
 184         dc.y = 0;
 185         dc.w = mw;
 186         dc.h = mh;
 187         drawtext(NULL, dc.norm);
 188         /* print prompt? */
 189         if(promptw) {
 190                 dc.w = promptw;
 191                 drawtext(prompt, dc.sel);
 192         }
 193         dc.x += promptw;
 194         dc.w = mw - promptw;
 195         /* print command */
 196         if(cmdw && item)
 197                 dc.w = cmdw;
 198         drawtext(text[0] ? text : NULL, dc.norm);
 199         dc.x += cmdw;
 200         if(curr) {
 201                 dc.w = spaceitem;
 202                 drawtext((curr && curr->left) ? "<" : NULL, dc.norm);
 203                 dc.x += dc.w;
 204                 /* determine maximum items */
 205                 for(i = curr; i != next; i=i->right) {
 206                         dc.w = textw(i->text);
 207                         if(dc.w > mw / 3)
 208                                 dc.w = mw / 3;
 209                         drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
 210                         dc.x += dc.w;
 211                 }
 212                 dc.x = mw - spaceitem;
 213                 dc.w = spaceitem;
 214                 drawtext(next ? ">" : NULL, dc.norm);
 215         }
 216         XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
 217         XFlush(dpy);
 218 }
 219
 220 void
 221 drawtext(const char *text, ulong col[ColLast]) {
 222         int x, y, w, h;
 223         static char buf[256];
 224         uint len, olen;
 225         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
 226
 227         XSetForeground(dpy, dc.gc, col[ColBG]);
 228         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 229         if(!text)
 230                 return;
 231         w = 0;
 232         olen = len = strlen(text);
 233         if(len >= sizeof buf)
 234                 len = sizeof buf - 1;
 235         memcpy(buf, text, len);
 236         buf[len] = 0;
 237         h = dc.font.ascent + dc.font.descent;
 238         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
 239         x = dc.x + (h / 2);
 240         /* shorten text if necessary */
 241         while(len && (w = textnw(buf, len)) > dc.w - h)
 242                 buf[--len] = 0;
 243         if(len < olen) {
 244                 if(len > 1)
 245                         buf[len - 1] = '.';
 246                 if(len > 2)
 247                         buf[len - 2] = '.';
 248                 if(len > 3)
 249                         buf[len - 3] = '.';
 250         }
 251         if(w > dc.w)
 252                 return; /* too long */
 253         XSetForeground(dpy, dc.gc, col[ColFG]);
 254         if(dc.font.set)
 255                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
 256         else
 257                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 258 }
 259
 260 void *
 261 emalloc(uint size) {
 262         void *res = malloc(size);
 263
 264         if(!res)
 265                 eprint("fatal: could not malloc() %u bytes\n", size);
 266         return res;
 267 }
 268
 269 void
 270 eprint(const char *errstr, ...) {
 271         va_list ap;
 272
 273         va_start(ap, errstr);
 274         vfprintf(stderr, errstr, ap);
 275         va_end(ap);
 276         exit(EXIT_FAILURE);
 277 }
 278
 279 ulong
 280 getcolor(const char *colstr) {
 281         Colormap cmap = DefaultColormap(dpy, screen);
 282         XColor color;
 283
 284         if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
 285                 eprint("error, cannot allocate color '%s'\n", colstr);
 286         return color.pixel;
 287 }
 288
 289 Bool
 290 grabkeyboard(void) {
 291         uint len;
 292
 293         for(len = 1000; len; len--) {
 294                 if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
 295                 == GrabSuccess)
 296                         break;
 297                 usleep(1000);
 298         }
 299         return len > 0;
 300 }
 301
 302 void
 303 initfont(const char *fontstr) {
 304         char *def, **missing;
 305         int i, n;
 306
 307         if(!fontstr || fontstr[0] == '\0')
 308                 eprint("error, cannot load font: '%s'\n", fontstr);
 309         missing = NULL;
 310         if(dc.font.set)
 311                 XFreeFontSet(dpy, dc.font.set);
 312         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 313         if(missing)
 314                 XFreeStringList(missing);
 315         if(dc.font.set) {
 316                 XFontSetExtents *font_extents;
 317                 XFontStruct **xfonts;
 318                 char **font_names;
 319                 dc.font.ascent = dc.font.descent = 0;
 320                 font_extents = XExtentsOfFontSet(dc.font.set);
 321                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 322                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 323                         if(dc.font.ascent < (*xfonts)->ascent)
 324                                 dc.font.ascent = (*xfonts)->ascent;
 325                         if(dc.font.descent < (*xfonts)->descent)
 326                                 dc.font.descent = (*xfonts)->descent;
 327                         xfonts++;
 328                 }
 329         }
 330         else {
 331                 if(dc.font.xfont)
 332                         XFreeFont(dpy, dc.font.xfont);
 333                 dc.font.xfont = NULL;
 334                 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
 335                 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
 336                         eprint("error, cannot load font: '%s'\n", fontstr);
 337                 dc.font.ascent = dc.font.xfont->ascent;
 338                 dc.font.descent = dc.font.xfont->descent;
 339         }
 340         dc.font.height = dc.font.ascent + dc.font.descent;
 341 }
 342
 343 void
 344 kpress(XKeyEvent * e) {
 345         char buf[32];
 346         int i, num;
 347         uint len;
 348         KeySym ksym;
 349
 350         len = strlen(text);
 351         buf[0] = 0;
 352         num = XLookupString(e, buf, sizeof buf, &ksym, 0);
 353         if(IsKeypadKey(ksym)) {
 354                 if(ksym == XK_KP_Enter)
 355                         ksym = XK_Return;
 356                 else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
 357                         ksym = (ksym - XK_KP_0) + XK_0;
 358         }
 359         if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
 360            || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
 361            || IsPrivateKeypadKey(ksym))
 362                 return;
 363         /* first check if a control mask is omitted */
 364         if(e->state & ControlMask) {
 365                 switch (ksym) {
 366                 default:        /* ignore other control sequences */
 367                         return;
 368                 case XK_bracketleft:
 369                         ksym = XK_Escape;
 370                         break;
 371                 case XK_h:
 372                 case XK_H:
 373                         ksym = XK_BackSpace;
 374                         break;
 375                 case XK_i:
 376                 case XK_I:
 377                         ksym = XK_Tab;
 378                         break;
 379                 case XK_j:
 380                 case XK_J:
 381                         ksym = XK_Return;
 382                         break;
 383                 case XK_u:
 384                 case XK_U:
 385                         text[0] = 0;
 386                         match(text);
 387                         drawmenu();
 388                         return;
 389                 case XK_w:
 390                 case XK_W:
 391                         if(len) {
 392                                 i = len - 1;
 393                                 while(i >= 0 && text[i] == ' ')
 394                                         text[i--] = 0;
 395                                 while(i >= 0 && text[i] != ' ')
 396                                         text[i--] = 0;
 397                                 match(text);
 398                                 drawmenu();
 399                         }
 400                         return;
 401                 }
 402         }
 403         if(CLEANMASK(e->state) & Mod1Mask) {
 404                 switch(ksym) {
 405                 default: return;
 406                 case XK_h:
 407                         ksym = XK_Left;
 408                         break;
 409                 case XK_l:
 410                         ksym = XK_Right;
 411                         break;
 412                 case XK_j:
 413                         ksym = XK_Next;
 414                         break;
 415                 case XK_k:
 416                         ksym = XK_Prior;
 417                         break;
 418                 case XK_g:
 419                         ksym = XK_Home;
 420                         break;
 421                 case XK_G:
 422                         ksym = XK_End;
 423                         break;
 424                 }
 425         }
 426         switch(ksym) {
 427         default:
 428                 if(num && !iscntrl((int) buf[0])) {
 429                         buf[num] = 0;
 430                         if(len > 0)
 431                                 strncat(text, buf, sizeof text);
 432                         else
 433                                 strncpy(text, buf, sizeof text);
 434                         match(text);
 435                 }
 436                 break;
 437         case XK_BackSpace:
 438                 if(len) {
 439                         text[--len] = 0;
 440                         match(text);
 441                 }
 442                 break;
 443         case XK_End:
 444                 if(!item)
 445                         return;
 446                 while(next) {
 447                         sel = curr = next;
 448                         calcoffsets();
 449                 }
 450                 while(sel && sel->right)
 451                         sel = sel->right;
 452                 break;
 453         case XK_Escape:
 454                 ret = 1;
 455                 running = False;
 456                 break;
 457         case XK_Home:
 458                 if(!item)
 459                         return;
 460                 sel = curr = item;
 461                 calcoffsets();
 462                 break;
 463         case XK_Left:
 464                 if(!(sel && sel->left))
 465                         return;
 466                 sel=sel->left;
 467                 if(sel->right == curr) {
 468                         curr = prev;
 469                         calcoffsets();
 470                 }
 471                 break;
 472         case XK_Next:
 473                 if(!next)
 474                         return;
 475                 sel = curr = next;
 476                 calcoffsets();
 477                 break;
 478         case XK_Prior:
 479                 if(!prev)
 480                         return;
 481                 sel = curr = prev;
 482                 calcoffsets();
 483                 break;
 484         case XK_Return:
 485                 if((e->state & ShiftMask) && text)
 486                         fprintf(stdout, "%s", text);
 487                 else if(sel)
 488                         fprintf(stdout, "%s", sel->text);
 489                 else if(text)
 490                         fprintf(stdout, "%s", text);
 491                 fflush(stdout);
 492                 running = False;
 493                 break;
 494         case XK_Right:
 495                 if(!(sel && sel->right))
 496                         return;
 497                 sel=sel->right;
 498                 if(sel == next) {
 499                         curr = next;
 500                         calcoffsets();
 501                 }
 502                 break;
 503         case XK_Tab:
 504                 if(!sel)
 505                         return;
 506                 strncpy(text, sel->text, sizeof text);
 507                 match(text);
 508                 break;
 509         }
 510         drawmenu();
 511 }
 512
 513 void
 514 match(char *pattern) {
 515         uint plen;
 516         Item *i, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
 517
 518         if(!pattern)
 519                 return;
 520         plen = strlen(pattern);
 521         item = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
 522         for(i = allitems; i; i = i->next)
 523                 if(!fstrncmp(pattern, i->text, plen + 1))
 524                         appenditem(i, &lexact, &exactend);
 525                 else if(!fstrncmp(pattern, i->text, plen))
 526                         appenditem(i, &lprefix, &prefixend);
 527                 else if(fstrstr(i->text, pattern))
 528                         appenditem(i, &lsubstr, &substrend);
 529         if(lexact) {
 530                 item = lexact;
 531                 itemend = exactend;
 532         }
 533         if(lprefix) {
 534                 if(itemend) {
 535                         itemend->right = lprefix;
 536                         lprefix->left = itemend;
 537                 }
 538                 else
 539                         item = lprefix;
 540                 itemend = prefixend;
 541         }
 542         if(lsubstr) {
 543                 if(itemend) {
 544                         itemend->right = lsubstr;
 545                         lsubstr->left = itemend;
 546                 }
 547                 else
 548                         item = lsubstr;
 549         }
 550         curr = prev = next = sel = item;
 551         calcoffsets();
 552 }
 553
 554 void
 555 readstdin(void) {
 556         char *p, buf[1024];
 557         uint len = 0, max = 0;
 558         Item *i, *new;
 559
 560         i = 0;
 561         while(fgets(buf, sizeof buf, stdin)) {
 562                 len = strlen(buf);
 563                 if (buf[len - 1] == '\n')
 564                         buf[len - 1] = 0;
 565                 if(!(p = strdup(buf)))
 566                         eprint("fatal: could not strdup() %u bytes\n", strlen(buf));
 567                 if(max < len) {
 568                         maxname = p;
 569                         max = len;
 570                 }
 571                 new = emalloc(sizeof(Item));
 572                 new->next = new->left = new->right = NULL;
 573                 new->text = p;
 574                 if(!i)
 575                         allitems = new;
 576                 else
 577                         i->next = new;
 578                 i = new;
 579         }
 580 }
 581
 582 void
 583 run(void) {
 584         XEvent ev;
 585
 586         /* main event loop */
 587         while(running && !XNextEvent(dpy, &ev))
 588                 switch (ev.type) {
 589                 default:        /* ignore all crap */
 590                         break;
 591                 case KeyPress:
 592                         kpress(&ev.xkey);
 593                         break;
 594                 case Expose:
 595                         if(ev.xexpose.count == 0)
 596                                 drawmenu();
 597                         break;
 598                 }
 599 }
 600
 601 void
 602 setup(Bool topbar) {
 603         int i, j, x, y;
 604         XModifierKeymap *modmap;
 605         XSetWindowAttributes wa;
 606 #if XINERAMA
 607         XineramaScreenInfo *info = NULL;
 608 #endif
 609
 610         /* init modifier map */
 611         modmap = XGetModifierMapping(dpy);
 612         for(i = 0; i < 8; i++)
 613                 for(j = 0; j < modmap->max_keypermod; j++) {
 614                         if(modmap->modifiermap[i * modmap->max_keypermod + j]
 615                         == XKeysymToKeycode(dpy, XK_Num_Lock))
 616                                 numlockmask = (1 << i);
 617                 }
 618         XFreeModifiermap(modmap);
 619
 620         /* style */
 621         dc.norm[ColBG] = getcolor(normbg);
 622         dc.norm[ColFG] = getcolor(normfg);
 623         dc.sel[ColBG] = getcolor(selbg);
 624         dc.sel[ColFG] = getcolor(selfg);
 625         initfont(font);
 626
 627         /* menu window */
 628         wa.override_redirect = 1;
 629         wa.background_pixmap = ParentRelative;
 630         wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask;
 631
 632         /* menu window geometry */
 633         mh = dc.font.height + 2;
 634 #if XINERAMA
 635         if(XineramaIsActive(dpy)) {
 636                 info = XineramaQueryScreens(dpy, &i);
 637                 x = info[0].x_org;
 638                 y = topbar ? info[0].y_org : info[0].y_org + info[0].height - mh;
 639                 mw = info[0].width;
 640                 XFree(info);
 641         }
 642         else
 643 #endif
 644         {
 645                 x = 0;
 646                 y = topbar ? 0 : DisplayHeight(dpy, screen) - mh;
 647                 mw = DisplayWidth(dpy, screen);
 648         }
 649
 650         win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
 651                         DefaultDepth(dpy, screen), CopyFromParent,
 652                         DefaultVisual(dpy, screen),
 653                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
 654
 655         /* pixmap */
 656         dc.drawable = XCreatePixmap(dpy, root, mw, mh, DefaultDepth(dpy, screen));
 657         dc.gc = XCreateGC(dpy, root, 0, 0);
 658         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
 659         if(!dc.font.set)
 660                 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
 661         if(maxname)
 662                 cmdw = textw(maxname);
 663         if(cmdw > mw / 3)
 664                 cmdw = mw / 3;
 665         if(prompt)
 666                 promptw = textw(prompt);
 667         if(promptw > mw / 5)
 668                 promptw = mw / 5;
 669         text[0] = 0;
 670         match(text);
 671         XMapRaised(dpy, win);
 672 }
 673
 674 int
 675 textnw(const char *text, uint len) {
 676         XRectangle r;
 677
 678         if(dc.font.set) {
 679                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
 680                 return r.width;
 681         }
 682         return XTextWidth(dc.font.xfont, text, len);
 683 }
 684
 685 int
 686 textw(const char *text) {
 687         return textnw(text, strlen(text)) + dc.font.height;
 688 }
 689
 690 int
 691 main(int argc, char *argv[]) {
 692         uint i;
 693         Bool topbar = True;
 694
 695         /* command line args */
 696         for(i = 1; i < argc; i++)
 697                 if(!strcmp(argv[i], "-i")) {
 698                         fstrncmp = strncasecmp;
 699                         fstrstr = cistrstr;
 700                 }
 701                 else if(!strcmp(argv[i], "-b"))
 702                         topbar = False;
 703                 else if(!strcmp(argv[i], "-fn")) {
 704                         if(++i < argc) font = argv[i];
 705                 }
 706                 else if(!strcmp(argv[i], "-nb")) {
 707                         if(++i < argc) normbg = argv[i];
 708                 }
 709                 else if(!strcmp(argv[i], "-nf")) {
 710                         if(++i < argc) normfg = argv[i];
 711                 }
 712                 else if(!strcmp(argv[i], "-p")) {
 713                         if(++i < argc) prompt = argv[i];
 714                 }
 715                 else if(!strcmp(argv[i], "-sb")) {
 716                         if(++i < argc) selbg = argv[i];
 717                 }
 718                 else if(!strcmp(argv[i], "-sf")) {
 719                         if(++i < argc) selfg = argv[i];
 720                 }
 721                 else if(!strcmp(argv[i], "-v"))
 722                         eprint("dmenu-"VERSION", © 2006-2008 dmenu engineers, see LICENSE for details\n");
 723                 else
 724                         eprint("usage: dmenu [-i] [-b] [-fn <font>] [-nb <color>] [-nf <color>]\n"
 725                                "             [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
 726         setlocale(LC_CTYPE, "");
 727         if(!(dpy = XOpenDisplay(0)))
 728                 eprint("dmenu: cannot open display\n");
 729         screen = DefaultScreen(dpy);
 730         root = RootWindow(dpy, screen);
 731
 732         if(isatty(STDIN_FILENO)) {
 733                 readstdin();
 734                 running = grabkeyboard();
 735         }
 736         else { /* prevent keypress loss */
 737                 running = grabkeyboard();
 738                 readstdin();
 739         }
 740
 741         setup(topbar);
 742         drawmenu();
 743         XSync(dpy, False);
 744         run();
 745         cleanup();
 746         XCloseDisplay(dpy);
 747         return ret;
 748 }