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 #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
  20 #define MIN(a, b)               ((a) < (b) ? (a) : (b))
  21 #define MAX(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 calcoffsetsh(void);
  52 static void calcoffsetsv(void);
  53 static char *cistrstr(const char *s, const char *sub);
  54 static void cleanup(void);
  55 static void drawcursor(void);
  56 static void drawmenu(void);
  57 static void drawmenuh(void);
  58 static void drawmenuv(void);
  59 static void drawtext(const char *text, unsigned long col[ColLast]);
  60 static void eprint(const char *errstr, ...);
  61 static unsigned long getcolor(const char *colstr);
  62 static Bool grabkeyboard(void);
  63 static void initfont(const char *fontstr);
  64 static void kpress(XKeyEvent * e);
  65 static void match(char *pattern);
  66 static void readstdin(void);
  67 static void run(void);
  68 static void setup(Bool topbar);
  69 static int textnw(const char *text, unsigned int len);
  70 static int textw(const char *text);
  71
  72 #include "config.h"
  73
  74 /* variables */
  75 static char *maxname = NULL;
  76 static char *prompt = NULL;
  77 static char text[4096];
  78 static int cmdw = 0;
  79 static int promptw = 0;
  80 static int ret = 0;
  81 static int cursor = 0;
  82 static int screen;
  83 static unsigned int mw, mh;
  84 static unsigned int numlockmask = 0;
  85 static Bool running = True;
  86 static Display *dpy;
  87 static DC dc;
  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 static Bool vlist = False;
  98 static unsigned int lines = 5;
  99 static void (*calcoffsets)(void) = calcoffsetsh;
 100
 101 void
 102 appenditem(Item *i, Item **list, Item **last) {
 103         if(!(*last))
 104                 *list = i;
 105         else
 106                 (*last)->right = i;
 107         i->left = *last;
 108         i->right = NULL;
 109         *last = i;
 110 }
 111
 112 void
 113 calcoffsetsh(void) {
 114         int tw;
 115         unsigned int w;
 116
 117         if(!curr)
 118                 return;
 119         w = promptw + cmdw + 2 * spaceitem;
 120         for(next = curr; next; next=next->right) {
 121                 tw = textw(next->text);
 122                 if(tw > mw / 3)
 123                         tw = mw / 3;
 124                 w += tw;
 125                 if(w > mw)
 126                         break;
 127         }
 128         w = promptw + cmdw + 2 * spaceitem;
 129         for(prev = curr; prev && prev->left; prev=prev->left) {
 130                 tw = textw(prev->left->text);
 131                 if(tw > mw / 3)
 132                         tw = mw / 3;
 133                 w += tw;
 134                 if(w > mw)
 135                         break;
 136         }
 137 }
 138
 139 void
 140 calcoffsetsv(void) {
 141         static unsigned int w;
 142
 143         if(!curr)
 144                 return;
 145         w = (dc.font.height + 2) * (lines + 1);
 146         for(next = curr; next; next=next->right) {
 147                 w -= dc.font.height + 2;
 148                 if(w <= 0)
 149                         break;
 150         }
 151         w = (dc.font.height + 2) * (lines + 1);
 152         for(prev = curr; prev && prev->left; prev=prev->left) {
 153                 w -= dc.font.height + 2;
 154                 if(w <= 0)
 155                         break;
 156         }
 157 }
 158
 159 char *
 160 cistrstr(const char *s, const char *sub) {
 161         int c, csub;
 162         unsigned int len;
 163
 164         if(!sub)
 165                 return (char *)s;
 166         if((c = *sub++) != 0) {
 167                 c = tolower(c);
 168                 len = strlen(sub);
 169                 do {
 170                         do {
 171                                 if((csub = *s++) == 0)
 172                                         return NULL;
 173                         }
 174                         while(tolower(csub) != c);
 175                 }
 176                 while(strncasecmp(s, sub, len) != 0);
 177                 s--;
 178         }
 179         return (char *)s;
 180 }
 181
 182 void
 183 cleanup(void) {
 184         Item *itm;
 185
 186         while(allitems) {
 187                 itm = allitems->next;
 188                 free(allitems->text);
 189                 free(allitems);
 190                 allitems = itm;
 191         }
 192         if(dc.font.set)
 193                 XFreeFontSet(dpy, dc.font.set);
 194         else
 195                 XFreeFont(dpy, dc.font.xfont);
 196         XFreePixmap(dpy, dc.drawable);
 197         XFreeGC(dpy, dc.gc);
 198         XDestroyWindow(dpy, win);
 199         XUngrabKeyboard(dpy, CurrentTime);
 200 }
 201
 202 void
 203 drawcursor(void) {
 204         XRectangle r = { dc.x, dc.y + 2, 1, dc.font.height - 2 };
 205
 206         r.x += textnw(text, cursor) + dc.font.height / 2;
 207
 208         XSetForeground(dpy, dc.gc, dc.norm[ColFG]);
 209         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 210 }
 211
 212 void
 213 drawmenu(void) {
 214         dc.x = 0;
 215         dc.y = 0;
 216         dc.w = mw;
 217         dc.h = mh;
 218         drawtext(NULL, dc.norm);
 219         /* print prompt? */
 220         if(promptw) {
 221                 dc.w = promptw;
 222                 drawtext(prompt, dc.sel);
 223         }
 224         dc.x += promptw;
 225         dc.w = mw - promptw;
 226         /* print command */
 227         if(cmdw && item)
 228                 dc.w = cmdw;
 229         drawtext(text[0] ? text : NULL, dc.norm);
 230         drawcursor();
 231         dc.x += cmdw;
 232         if(curr) {
 233                 if(vlist)
 234                         drawmenuv();
 235                 else
 236                         drawmenuh();
 237         }
 238         XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
 239         XFlush(dpy);
 240 }
 241
 242 void
 243 drawmenuh(void) {
 244         Item *i;
 245
 246         dc.w = spaceitem;
 247         drawtext((curr && curr->left) ? "<" : NULL, dc.norm);
 248         dc.x += dc.w;
 249         /* determine maximum items */
 250         for(i = curr; i != next; i=i->right) {
 251                 dc.w = MIN(textw(i->text), mw / 3);
 252                 drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
 253                 dc.x += dc.w;
 254         }
 255         dc.x = mw - spaceitem;
 256         dc.w = spaceitem;
 257         drawtext(next ? ">" : NULL, dc.norm);
 258 }
 259
 260 void
 261 drawmenuv(void) {
 262         Item *i;
 263
 264         dc.x = 0;
 265         dc.w = mw;
 266         dc.y += dc.font.height + 2;
 267         /* determine maximum items */
 268         for(i = curr; i != next; i=i->right) {
 269                 drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
 270                 dc.y += dc.font.height + 2;
 271         }
 272         drawtext(NULL, dc.norm);
 273 }
 274
 275 void
 276 drawtext(const char *text, unsigned long col[ColLast]) {
 277         char buf[256];
 278         int i, x, y, h, len, olen;
 279         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
 280
 281         XSetForeground(dpy, dc.gc, col[ColBG]);
 282         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 283         if(!text)
 284                 return;
 285         olen = strlen(text);
 286         h = dc.font.height;
 287         y = dc.y + ((h+2) / 2) - (h / 2) + dc.font.ascent;
 288         x = dc.x + (h / 2);
 289         /* shorten text if necessary */
 290         for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
 291         if(!len)
 292                 return;
 293         memcpy(buf, text, len);
 294         if(len < olen)
 295                 for(i = len; i && i > len - 3; buf[--i] = '.');
 296         XSetForeground(dpy, dc.gc, col[ColFG]);
 297         if(dc.font.set)
 298                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
 299         else
 300                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 301 }
 302
 303 void
 304 eprint(const char *errstr, ...) {
 305         va_list ap;
 306
 307         va_start(ap, errstr);
 308         vfprintf(stderr, errstr, ap);
 309         va_end(ap);
 310         exit(EXIT_FAILURE);
 311 }
 312
 313 unsigned long
 314 getcolor(const char *colstr) {
 315         Colormap cmap = DefaultColormap(dpy, screen);
 316         XColor color;
 317
 318         if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
 319                 eprint("error, cannot allocate color '%s'\n", colstr);
 320         return color.pixel;
 321 }
 322
 323 Bool
 324 grabkeyboard(void) {
 325         unsigned int len;
 326
 327         for(len = 1000; len; len--) {
 328                 if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
 329                 == GrabSuccess)
 330                         break;
 331                 usleep(1000);
 332         }
 333         return len > 0;
 334 }
 335
 336 void
 337 initfont(const char *fontstr) {
 338         char *def, **missing;
 339         int i, n;
 340
 341         if(!fontstr || fontstr[0] == '\0')
 342                 eprint("error, cannot load font: '%s'\n", fontstr);
 343         missing = NULL;
 344         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 345         if(missing)
 346                 XFreeStringList(missing);
 347         if(dc.font.set) {
 348                 XFontSetExtents *font_extents;
 349                 XFontStruct **xfonts;
 350                 char **font_names;
 351                 dc.font.ascent = dc.font.descent = 0;
 352                 font_extents = XExtentsOfFontSet(dc.font.set);
 353                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 354                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 355                         if(dc.font.ascent < (*xfonts)->ascent)
 356                                 dc.font.ascent = (*xfonts)->ascent;
 357                         if(dc.font.descent < (*xfonts)->descent)
 358                                 dc.font.descent = (*xfonts)->descent;
 359                         xfonts++;
 360                 }
 361         }
 362         else {
 363                 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
 364                 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
 365                         eprint("error, cannot load font: '%s'\n", fontstr);
 366                 dc.font.ascent = dc.font.xfont->ascent;
 367                 dc.font.descent = dc.font.xfont->descent;
 368         }
 369         dc.font.height = dc.font.ascent + dc.font.descent;
 370 }
 371
 372 void
 373 kpress(XKeyEvent * e) {
 374         char buf[sizeof text];
 375         int i, num;
 376         unsigned int len;
 377         KeySym ksym;
 378
 379         len = strlen(text);
 380         buf[0] = 0;
 381         num = XLookupString(e, buf, sizeof buf, &ksym, NULL);
 382         if(IsKeypadKey(ksym)) {
 383                 if(ksym == XK_KP_Enter)
 384                         ksym = XK_Return;
 385                 else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
 386                         ksym = (ksym - XK_KP_0) + XK_0;
 387         }
 388         if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
 389            || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
 390            || IsPrivateKeypadKey(ksym))
 391                 return;
 392         /* first check if a control mask is omitted */
 393         if(e->state & ControlMask) {
 394                 switch (ksym) {
 395                 default:        /* ignore other control sequences */
 396                         return;
 397                 case XK_c:
 398                 case XK_C:
 399                         ksym = XK_Escape;
 400                         break;
 401                 case XK_h:
 402                 case XK_H:
 403                         ksym = XK_BackSpace;
 404                         break;
 405                 case XK_i:
 406                 case XK_I:
 407                         ksym = XK_Tab;
 408                         break;
 409                 case XK_j:
 410                 case XK_J:
 411                         ksym = XK_Return;
 412                         break;
 413                 case XK_u:
 414                 case XK_U:
 415                         text[0] = 0;
 416                         match(text);
 417                         break;
 418                 case XK_w:
 419                 case XK_W:
 420                         if(cursor > 0) {
 421                                 i = cursor;
 422                                 while(i-- > 0 && text[i] == ' ');
 423                                 while(i-- > 0 && text[i] != ' ');
 424                                 memmove(text + i + 1, text + cursor, sizeof text - cursor);
 425                                 cursor = i + 1;
 426                                 match(text);
 427                         }
 428                         break;
 429                 }
 430         }
 431         if(CLEANMASK(e->state) & Mod1Mask) {
 432                 switch(ksym) {
 433                 default: return;
 434                 case XK_h:
 435                         ksym = XK_Left;
 436                         break;
 437                 case XK_l:
 438                         ksym = XK_Right;
 439                         break;
 440                 case XK_j:
 441                         ksym = XK_Next;
 442                         break;
 443                 case XK_k:
 444                         ksym = XK_Prior;
 445                         break;
 446                 case XK_g:
 447                         ksym = XK_Home;
 448                         break;
 449                 case XK_G:
 450                         ksym = XK_End;
 451                         break;
 452                 case XK_p:
 453                         {
 454                                 FILE *fp;
 455                                 char *c;
 456                                 if(!(fp = (FILE*)popen("sselp", "r")))
 457                                         eprint("dmenu: Could not popen sselp\n");
 458                                 c = fgets(buf, sizeof buf, fp);
 459                                 pclose(fp);
 460                                 if(c == NULL)
 461                                         return;
 462                         }
 463                         num = strlen(buf);
 464                         if(num && buf[num-1] == '\n')
 465                                 buf[--num] = '\0';
 466                         break;
 467                 }
 468         }
 469         switch(ksym) {
 470         default:
 471                 num = MIN(num, sizeof text - cursor);
 472                 if(num && !iscntrl((int) buf[0])) {
 473                         memmove(text + cursor + num, text + cursor, sizeof text - cursor - num);
 474                         memcpy(text + cursor, buf, num);
 475                         cursor+=num;
 476                         match(text);
 477                 }
 478                 break;
 479         case XK_BackSpace:
 480                 if(cursor > 0) {
 481                         memmove(text + cursor - 1, text + cursor, sizeof text - cursor + 1);
 482                         cursor--;
 483                         match(text);
 484                 }
 485                 break;
 486         case XK_Delete:
 487                 memmove(text + cursor, text + cursor + 1, sizeof text - cursor);
 488                 match(text);
 489                 break;
 490         case XK_End:
 491                 if(cursor < len) {
 492                         cursor = len;
 493                         break;
 494                 }
 495                 while(next) {
 496                         sel = curr = next;
 497                         calcoffsets();
 498                 }
 499                 while(sel && sel->right)
 500                         sel = sel->right;
 501                 break;
 502         case XK_Escape:
 503                 ret = 1;
 504                 running = False;
 505                 break;
 506         case XK_Home:
 507                 if(sel == item) {
 508                         cursor = 0;
 509                         break;
 510                 }
 511                 sel = curr = item;
 512                 calcoffsets();
 513                 break;
 514         case XK_Left:
 515         case XK_Up:
 516                 if(sel && sel->left){
 517                         sel=sel->left;
 518                         if(sel->right == curr) {
 519                                 curr = prev;
 520                                 calcoffsets();
 521                         }
 522                 }
 523                 else if(cursor > 0)
 524                         cursor--;
 525                 else
 526                         return;
 527                 break;
 528         case XK_Next:
 529                 if(!next)
 530                         return;
 531                 sel = curr = next;
 532                 calcoffsets();
 533                 break;
 534         case XK_Prior:
 535                 if(!prev)
 536                         return;
 537                 sel = curr = prev;
 538                 calcoffsets();
 539                 break;
 540         case XK_Return:
 541                 if((e->state & ShiftMask) || !sel)
 542                         fprintf(stdout, "%s", text);
 543                 else
 544                         fprintf(stdout, "%s", sel->text);
 545                 fflush(stdout);
 546                 running = False;
 547                 break;
 548         case XK_Right:
 549         case XK_Down:
 550                 if(cursor < len)
 551                         cursor++;
 552                 else if(sel && sel->right) {
 553                         sel=sel->right;
 554                         if(sel == next) {
 555                                 curr = next;
 556                                 calcoffsets();
 557                         }
 558                 }
 559                 else
 560                         return;
 561                 break;
 562         case XK_Tab:
 563                 if(!sel)
 564                         return;
 565                 strncpy(text, sel->text, sizeof text);
 566                 cursor = strlen(text);
 567                 match(text);
 568                 break;
 569         }
 570         drawmenu();
 571 }
 572
 573 void
 574 match(char *pattern) {
 575         unsigned int plen;
 576         Item *i, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
 577
 578         if(!pattern)
 579                 return;
 580         plen = strlen(pattern);
 581         item = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
 582         for(i = allitems; i; i = i->next)
 583                 if(!fstrncmp(pattern, i->text, plen + 1))
 584                         appenditem(i, &lexact, &exactend);
 585                 else if(!fstrncmp(pattern, i->text, plen))
 586                         appenditem(i, &lprefix, &prefixend);
 587                 else if(fstrstr(i->text, pattern))
 588                         appenditem(i, &lsubstr, &substrend);
 589         if(lexact) {
 590                 item = lexact;
 591                 itemend = exactend;
 592         }
 593         if(lprefix) {
 594                 if(itemend) {
 595                         itemend->right = lprefix;
 596                         lprefix->left = itemend;
 597                 }
 598                 else
 599                         item = lprefix;
 600                 itemend = prefixend;
 601         }
 602         if(lsubstr) {
 603                 if(itemend) {
 604                         itemend->right = lsubstr;
 605                         lsubstr->left = itemend;
 606                 }
 607                 else
 608                         item = lsubstr;
 609         }
 610         curr = prev = next = sel = item;
 611         calcoffsets();
 612 }
 613
 614 void
 615 readstdin(void) {
 616         char *p, buf[1024];
 617         unsigned int len = 0, max = 0;
 618         Item *i, *new;
 619
 620         i = NULL;
 621         while(fgets(buf, sizeof buf, stdin)) {
 622                 len = strlen(buf);
 623                 if(buf[len-1] == '\n')
 624                         buf[--len] = '\0';
 625                 if(!(p = strdup(buf)))
 626                         eprint("fatal: could not strdup() %u bytes\n", len);
 627                 if(max < len) {
 628                         maxname = p;
 629                         max = len;
 630                 }
 631                 if(!(new = (Item *)malloc(sizeof(Item))))
 632                         eprint("fatal: could not malloc() %u bytes\n", sizeof(Item));
 633                 new->next = new->left = new->right = NULL;
 634                 new->text = p;
 635                 if(!i)
 636                         allitems = new;
 637                 else
 638                         i->next = new;
 639                 i = new;
 640         }
 641 }
 642
 643 void
 644 run(void) {
 645         XEvent ev;
 646
 647         /* main event loop */
 648         while(running && !XNextEvent(dpy, &ev))
 649                 switch (ev.type) {
 650                 default:        /* ignore all crap */
 651                         break;
 652                 case KeyPress:
 653                         kpress(&ev.xkey);
 654                         break;
 655                 case Expose:
 656                         if(ev.xexpose.count == 0)
 657                                 drawmenu();
 658                         break;
 659                 }
 660 }
 661
 662 void
 663 setup(Bool topbar) {
 664         int i, j, x, y;
 665 #if XINERAMA
 666         int n;
 667         XineramaScreenInfo *info = NULL;
 668 #endif
 669         XModifierKeymap *modmap;
 670         XSetWindowAttributes wa;
 671
 672         /* init modifier map */
 673         modmap = XGetModifierMapping(dpy);
 674         for(i = 0; i < 8; i++)
 675                 for(j = 0; j < modmap->max_keypermod; j++) {
 676                         if(modmap->modifiermap[i * modmap->max_keypermod + j]
 677                         == XKeysymToKeycode(dpy, XK_Num_Lock))
 678                                 numlockmask = (1 << i);
 679                 }
 680         XFreeModifiermap(modmap);
 681
 682         /* style */
 683         dc.norm[ColBG] = getcolor(normbgcolor);
 684         dc.norm[ColFG] = getcolor(normfgcolor);
 685         dc.sel[ColBG] = getcolor(selbgcolor);
 686         dc.sel[ColFG] = getcolor(selfgcolor);
 687         initfont(font);
 688
 689         /* menu window */
 690         wa.override_redirect = True;
 691         wa.background_pixmap = ParentRelative;
 692         wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask;
 693
 694         /* menu window geometry */
 695         mh = dc.font.height + 2;
 696         mh = vlist ? mh * (lines+1) : mh;
 697 #if XINERAMA
 698         if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
 699                 i = 0;
 700                 if(n > 1) {
 701                         int di;
 702                         unsigned int dui;
 703                         Window dummy;
 704                         if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
 705                                 for(i = 0; i < n; i++)
 706                                         if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
 707                                                 break;
 708                 }
 709                 x = info[i].x_org;
 710                 y = topbar ? info[i].y_org : info[i].y_org + info[i].height - mh;
 711                 mw = info[i].width;
 712                 XFree(info);
 713         }
 714         else
 715 #endif
 716         {
 717                 x = 0;
 718                 y = topbar ? 0 : DisplayHeight(dpy, screen) - mh;
 719                 mw = DisplayWidth(dpy, screen);
 720         }
 721
 722         win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
 723                         DefaultDepth(dpy, screen), CopyFromParent,
 724                         DefaultVisual(dpy, screen),
 725                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
 726
 727         /* pixmap */
 728         dc.drawable = XCreatePixmap(dpy, root, mw, mh, DefaultDepth(dpy, screen));
 729         dc.gc = XCreateGC(dpy, root, 0, NULL);
 730         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
 731         if(!dc.font.set)
 732                 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
 733         if(maxname)
 734                 cmdw = MIN(textw(maxname), mw / 3);
 735         if(prompt)
 736                 promptw = MIN(textw(prompt), mw / 5);
 737         text[0] = 0;
 738         match(text);
 739         XMapRaised(dpy, win);
 740 }
 741
 742 int
 743 textnw(const char *text, unsigned int len) {
 744         XRectangle r;
 745
 746         if(dc.font.set) {
 747                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
 748                 return r.width;
 749         }
 750         return XTextWidth(dc.font.xfont, text, len);
 751 }
 752
 753 int
 754 textw(const char *text) {
 755         return textnw(text, strlen(text)) + dc.font.height;
 756 }
 757
 758 int
 759 main(int argc, char *argv[]) {
 760         unsigned int i;
 761         Bool topbar = True;
 762
 763         /* command line args */
 764         for(i = 1; i < argc; i++)
 765                 if(!strcmp(argv[i], "-i")) {
 766                         fstrncmp = strncasecmp;
 767                         fstrstr = cistrstr;
 768                 }
 769                 else if(!strcmp(argv[i], "-b"))
 770                         topbar = False;
 771                 else if(!strcmp(argv[i], "-e")) {
 772                         if(++i < argc) root = atoi(argv[i]);
 773                 }
 774                 else if(!strcmp(argv[i], "-l")) {
 775                         vlist = True;
 776                         calcoffsets = calcoffsetsv;
 777                         if(++i < argc) lines = atoi(argv[i]);
 778                 }
 779                 else if(!strcmp(argv[i], "-fn")) {
 780                         if(++i < argc) font = argv[i];
 781                 }
 782                 else if(!strcmp(argv[i], "-nb")) {
 783                         if(++i < argc) normbgcolor = argv[i];
 784                 }
 785                 else if(!strcmp(argv[i], "-nf")) {
 786                         if(++i < argc) normfgcolor = argv[i];
 787                 }
 788                 else if(!strcmp(argv[i], "-p")) {
 789                         if(++i < argc) prompt = argv[i];
 790                 }
 791                 else if(!strcmp(argv[i], "-sb")) {
 792                         if(++i < argc) selbgcolor = argv[i];
 793                 }
 794                 else if(!strcmp(argv[i], "-sf")) {
 795                         if(++i < argc) selfgcolor = argv[i];
 796                 }
 797                 else if(!strcmp(argv[i], "-v"))
 798                         eprint("dmenu-"VERSION", © 2006-2010 dmenu engineers, see LICENSE for details\n");
 799                 else
 800                         eprint("usage: dmenu [-i] [-b] [-l <lines>] [-fn <font>] [-nb <color>] [-nf <color>]\n"
 801                                "             [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
 802         if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 803                 fprintf(stderr, "warning: no locale support\n");
 804         if(!(dpy = XOpenDisplay(NULL)))
 805                 eprint("dmenu: cannot open display\n");
 806         screen = DefaultScreen(dpy);
 807         if(!root)
 808                 root = RootWindow(dpy, screen);
 809
 810         if(isatty(STDIN_FILENO)) {
 811                 readstdin();
 812                 running = grabkeyboard();
 813         }
 814         else { /* prevent keypress loss */
 815                 running = grabkeyboard();
 816                 readstdin();
 817         }
 818
 819         setup(topbar);
 820         drawmenu();
 821         XSync(dpy, False);
 822         run();
 823         cleanup();
 824         XCloseDisplay(dpy);
 825         return ret;
 826 }