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