dmenu.c

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