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 #define IS_UTF8_1ST_CHAR(c)     ((((c) & 0xc0) == 0xc0) || !((c) & 0x80))
  23
  24 /* enums */
  25 enum { ColFG, ColBG, ColLast };
  26
  27 /* typedefs */
  28 typedef struct {
  29         int x, y, w, h;
  30         unsigned long norm[ColLast];
  31         unsigned long sel[ColLast];
  32         Drawable drawable;
  33         GC gc;
  34         struct {
  35                 XFontStruct *xfont;
  36                 XFontSet set;
  37                 int ascent;
  38                 int descent;
  39                 int height;
  40         } font;
  41 } DC; /* draw context */
  42
  43 typedef struct Item Item;
  44 struct Item {
  45         char *text;
  46         Item *next;         /* traverses all items */
  47         Item *left, *right; /* traverses items matching current search pattern */
  48 };
  49
  50 /* forward declarations */
  51 static void appenditem(Item *i, Item **list, Item **last);
  52 static void calcoffsetsh(void);
  53 static void calcoffsetsv(void);
  54 static char *cistrstr(const char *s, const char *sub);
  55 static void cleanup(void);
  56 static void drawcursor(void);
  57 static void drawmenu(void);
  58 static void drawmenuh(void);
  59 static void drawmenuv(void);
  60 static void drawtext(const char *text, unsigned long col[ColLast]);
  61 static void eprint(const char *errstr, ...);
  62 static unsigned long getcolor(const char *colstr);
  63 static Bool grabkeyboard(void);
  64 static void initfont(const char *fontstr);
  65 static void kpress(XKeyEvent * e);
  66 static void match(char *pattern);
  67 static void readstdin(void);
  68 static void run(void);
  69 static void setup(Bool topbar);
  70 static int textnw(const char *text, unsigned int len);
  71 static int textw(const char *text);
  72
  73 #include "config.h"
  74
  75 /* variables */
  76 static char *maxname = NULL;
  77 static char *prompt = NULL;
  78 static char text[4096];
  79 static int cmdw = 0;
  80 static int promptw = 0;
  81 static int ret = 0;
  82 static int cursor = 0;
  83 static int screen;
  84 static unsigned int mw, mh;
  85 static unsigned int numlockmask = 0;
  86 static Bool running = True;
  87 static Display *dpy;
  88 static DC dc;
  89 static Item *allitems = NULL;  /* first of all items */
  90 static Item *item = NULL;      /* first of pattern matching items */
  91 static Item *sel = NULL;
  92 static Item *next = NULL;
  93 static Item *prev = NULL;
  94 static Item *curr = NULL;
  95 static Window parent, win;
  96 static int (*fstrncmp)(const char *, const char *, size_t n) = strncmp;
  97 static char *(*fstrstr)(const char *, const char *) = strstr;
  98 static unsigned int lines = 0;
  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         unsigned int w;
 115
 116         if(!curr)
 117                 return;
 118         w = promptw + cmdw + 2 * spaceitem;
 119         for(next = curr; next && w < mw; next=next->right)
 120                 w += MIN(textw(next->text), mw / 3);
 121         w = promptw + cmdw + 2 * spaceitem;
 122         for(prev = curr; prev && prev->left && w < mw; prev=prev->left)
 123                 w += MIN(textw(prev->left->text), mw / 3);
 124 }
 125
 126 void
 127 calcoffsetsv(void) {
 128         unsigned int h;
 129
 130         if(!curr)
 131                 return;
 132         h = (dc.font.height + 2) * lines;
 133         for(next = curr; next && h > 0; next = next->right)
 134                 h -= dc.font.height + 2;
 135         h = (dc.font.height + 2) * lines;
 136         for(prev = curr; prev && prev->left && h > 0; prev = prev->left)
 137                 h -= dc.font.height + 2;
 138 }
 139
 140 char *
 141 cistrstr(const char *s, const char *sub) {
 142         int c, csub;
 143         unsigned int len;
 144
 145         if(!sub)
 146                 return (char *)s;
 147         if((c = *sub++) != '\0') {
 148                 c = tolower(c);
 149                 len = strlen(sub);
 150                 do {
 151                         do {
 152                                 if((csub = *s++) == '\0')
 153                                         return NULL;
 154                         }
 155                         while(tolower(csub) != c);
 156                 }
 157                 while(strncasecmp(s, sub, len) != 0);
 158                 s--;
 159         }
 160         return (char *)s;
 161 }
 162
 163 void
 164 cleanup(void) {
 165         if(dc.font.set)
 166                 XFreeFontSet(dpy, dc.font.set);
 167         else
 168                 XFreeFont(dpy, dc.font.xfont);
 169         XFreePixmap(dpy, dc.drawable);
 170         XFreeGC(dpy, dc.gc);
 171         XDestroyWindow(dpy, win);
 172         XUngrabKeyboard(dpy, CurrentTime);
 173 }
 174
 175 void
 176 drawcursor(void) {
 177         XRectangle r = { dc.x, dc.y + 2, 1, dc.font.height - 2 };
 178
 179         r.x += textnw(text, cursor) + dc.font.height / 2;
 180
 181         XSetForeground(dpy, dc.gc, dc.norm[ColFG]);
 182         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 183 }
 184
 185 void
 186 drawmenu(void) {
 187         dc.x = 0;
 188         dc.y = 0;
 189         dc.w = mw;
 190         dc.h = mh;
 191         drawtext(NULL, dc.norm);
 192         /* print prompt? */
 193         if(prompt) {
 194                 dc.w = promptw;
 195                 drawtext(prompt, dc.sel);
 196                 dc.x += dc.w;
 197         }
 198         dc.w = mw - dc.x;
 199         /* print command */
 200         if(cmdw && item && lines == 0)
 201                 dc.w = cmdw;
 202         drawtext(text[0] ? text : NULL, dc.norm);
 203         drawcursor();
 204         if(curr) {
 205                 if(lines > 0)
 206                         drawmenuv();
 207                 else
 208                         drawmenuh();
 209         }
 210         XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
 211         XFlush(dpy);
 212 }
 213
 214 void
 215 drawmenuh(void) {
 216         Item *i;
 217
 218         dc.x += cmdw;
 219         dc.w = spaceitem;
 220         drawtext(curr->left ? "<" : NULL, dc.norm);
 221         dc.x += dc.w;
 222         for(i = curr; i != next; i=i->right) {
 223                 dc.w = MIN(textw(i->text), mw / 3);
 224                 drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
 225                 dc.x += dc.w;
 226         }
 227         dc.w = spaceitem;
 228         dc.x = mw - dc.w;
 229         drawtext(next ? ">" : NULL, dc.norm);
 230 }
 231
 232 void
 233 drawmenuv(void) {
 234         Item *i;
 235
 236         dc.w = mw - dc.x;
 237         dc.h = dc.font.height + 2;
 238         dc.y = dc.h;
 239         for(i = curr; i != next; i=i->right) {
 240                 drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
 241                 dc.y += dc.h;
 242         }
 243         dc.h = mh - dc.y;
 244         drawtext(NULL, dc.norm);
 245 }
 246
 247 void
 248 drawtext(const char *text, unsigned long col[ColLast]) {
 249         char buf[256];
 250         int i, x, y, h, len, olen;
 251         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
 252
 253         XSetForeground(dpy, dc.gc, col[ColBG]);
 254         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 255         if(!text)
 256                 return;
 257         olen = strlen(text);
 258         h = dc.font.height;
 259         y = dc.y + ((h+2) / 2) - (h / 2) + dc.font.ascent;
 260         x = dc.x + (h / 2);
 261         /* shorten text if necessary */
 262         for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
 263         if(!len)
 264                 return;
 265         memcpy(buf, text, len);
 266         if(len < olen)
 267                 for(i = len; i && i > len - 3; buf[--i] = '.');
 268         XSetForeground(dpy, dc.gc, col[ColFG]);
 269         if(dc.font.set)
 270                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
 271         else
 272                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 273 }
 274
 275 void
 276 eprint(const char *errstr, ...) {
 277         va_list ap;
 278
 279         va_start(ap, errstr);
 280         vfprintf(stderr, errstr, ap);
 281         va_end(ap);
 282         exit(EXIT_FAILURE);
 283 }
 284
 285 unsigned long
 286 getcolor(const char *colstr) {
 287         Colormap cmap = DefaultColormap(dpy, screen);
 288         XColor color;
 289
 290         if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
 291                 eprint("dmenu: cannot allocate color '%s'\n", colstr);
 292         return color.pixel;
 293 }
 294
 295 Bool
 296 grabkeyboard(void) {
 297         unsigned int len;
 298
 299         for(len = 1000; len; len--) {
 300                 if(XGrabKeyboard(dpy, parent, True, GrabModeAsync, GrabModeAsync, CurrentTime)
 301                 == GrabSuccess)
 302                         break;
 303                 usleep(1000);
 304         }
 305         return len > 0;
 306 }
 307
 308 void
 309 initfont(const char *fontstr) {
 310         char *def, **missing = NULL;
 311         int i, n;
 312
 313         if(!fontstr || fontstr[0] == '\0')
 314                 eprint("dmenu: cannot load font: '%s'\n", fontstr);
 315         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 316         if(missing)
 317                 XFreeStringList(missing);
 318         if(dc.font.set) {
 319                 XFontStruct **xfonts;
 320                 char **font_names;
 321                 dc.font.ascent = dc.font.descent = 0;
 322                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 323                 for(i = 0; i < n; i++) {
 324                         dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
 325                         dc.font.descent = MAX(dc.font.descent, (*xfonts)->descent);
 326                         xfonts++;
 327                 }
 328         }
 329         else {
 330                 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
 331                 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
 332                         eprint("dmenu: cannot load font: '%s'\n", fontstr);
 333                 dc.font.ascent = dc.font.xfont->ascent;
 334                 dc.font.descent = dc.font.xfont->descent;
 335         }
 336         dc.font.height = dc.font.ascent + dc.font.descent;
 337 }
 338
 339 void
 340 kpress(XKeyEvent * e) {
 341         char buf[sizeof text];
 342         int i, num;
 343         unsigned int len;
 344         KeySym ksym;
 345
 346         len = strlen(text);
 347         num = XLookupString(e, buf, sizeof buf, &ksym, NULL);
 348         if(IsKeypadKey(ksym)) {
 349                 if(ksym == XK_KP_Enter)
 350                         ksym = XK_Return;
 351                 else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
 352                         ksym = (ksym - XK_KP_0) + XK_0;
 353         }
 354         if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
 355            || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
 356            || IsPrivateKeypadKey(ksym))
 357                 return;
 358         /* first check if a control mask is omitted */
 359         if(e->state & ControlMask) {
 360                 switch (ksym) {
 361                 default:        /* ignore other control sequences */
 362                         return;
 363                 case XK_a:
 364                 case XK_A:
 365                         ksym = XK_Home;
 366                         break;
 367                 case XK_c:
 368                 case XK_C:
 369                         ksym = XK_Escape;
 370                         break;
 371                 case XK_e:
 372                 case XK_E:
 373                         ksym = XK_End;
 374                         break;
 375                 case XK_h:
 376                 case XK_H:
 377                         ksym = XK_BackSpace;
 378                         break;
 379                 case XK_i:
 380                 case XK_I:
 381                         ksym = XK_Tab;
 382                         break;
 383                 case XK_j:
 384                 case XK_J:
 385                         ksym = XK_Return;
 386                         break;
 387                 case XK_u:
 388                 case XK_U:
 389                         memmove(text, text + cursor, sizeof text - cursor + 1);
 390                         cursor = 0;
 391                         match(text);
 392                         break;
 393                 case XK_w:
 394                 case XK_W:
 395                         if(cursor > 0) {
 396                                 i = cursor;
 397                                 while(i-- > 0 && text[i] == ' ');
 398                                 while(i-- > 0 && text[i] != ' ');
 399                                 memmove(text + i + 1, text + cursor, sizeof text - cursor + 1);
 400                                 cursor = i + 1;
 401                                 match(text);
 402                         }
 403                         break;
 404                 }
 405         }
 406         if(CLEANMASK(e->state) & Mod1Mask) {
 407                 switch(ksym) {
 408                 default: return;
 409                 case XK_h:
 410                         ksym = XK_Left;
 411                         break;
 412                 case XK_l:
 413                         ksym = XK_Right;
 414                         break;
 415                 case XK_j:
 416                         ksym = XK_Next;
 417                         break;
 418                 case XK_k:
 419                         ksym = XK_Prior;
 420                         break;
 421                 case XK_g:
 422                         ksym = XK_Home;
 423                         break;
 424                 case XK_G:
 425                         ksym = XK_End;
 426                         break;
 427                 case XK_p:
 428                         {
 429                                 FILE *fp;
 430                                 char *s;
 431                                 if(!(fp = popen("sselp", "r")))
 432                                         eprint("dmenu: cannot popen sselp\n");
 433                                 s = fgets(buf, sizeof buf, fp);
 434                                 pclose(fp);
 435                                 if(s == NULL)
 436                                         return;
 437                         }
 438                         num = strlen(buf);
 439                         if(num && buf[num-1] == '\n')
 440                                 buf[--num] = '\0';
 441                         break;
 442                 }
 443         }
 444         switch(ksym) {
 445         default:
 446                 num = MIN(num, sizeof text - cursor);
 447                 if(num && !iscntrl((int) buf[0])) {
 448                         memmove(text + cursor + num, text + cursor, sizeof text - cursor - num);
 449                         memcpy(text + cursor, buf, num);
 450                         cursor += num;
 451                         match(text);
 452                 }
 453                 break;
 454         case XK_BackSpace:
 455                 if(cursor > 0) {
 456                         for(i = 1; cursor - i > 0 && !IS_UTF8_1ST_CHAR(text[cursor - i]); i++);
 457                         memmove(text + cursor - i, text + cursor, sizeof text - cursor + i);
 458                         cursor -= i;
 459                         match(text);
 460                 }
 461                 break;
 462         case XK_Delete:
 463                 for(i = 1; cursor + i < len && !IS_UTF8_1ST_CHAR(text[cursor + i]); i++);
 464                 memmove(text + cursor, text + cursor + i, sizeof text - cursor);
 465                 match(text);
 466                 break;
 467         case XK_End:
 468                 if(cursor < len) {
 469                         cursor = len;
 470                         break;
 471                 }
 472                 while(next) {
 473                         sel = curr = next;
 474                         calcoffsets();
 475                 }
 476                 while(sel && sel->right)
 477                         sel = sel->right;
 478                 break;
 479         case XK_Escape:
 480                 ret = 1;
 481                 running = False;
 482                 break;
 483         case XK_Home:
 484                 if(sel == item) {
 485                         cursor = 0;
 486                         break;
 487                 }
 488                 sel = curr = item;
 489                 calcoffsets();
 490                 break;
 491         case XK_Left:
 492         case XK_Up:
 493                 if(sel && sel->left){
 494                         sel=sel->left;
 495                         if(sel->right == curr) {
 496                                 curr = prev;
 497                                 calcoffsets();
 498                         }
 499                 }
 500                 else if(cursor > 0) {
 501                         do {
 502                                 cursor--;
 503                         } while(cursor > 0 && !IS_UTF8_1ST_CHAR(text[cursor]));
 504                 } else
 505                         return;
 506                 break;
 507         case XK_Next:
 508                 if(!next)
 509                         return;
 510                 sel = curr = next;
 511                 calcoffsets();
 512                 break;
 513         case XK_Prior:
 514                 if(!prev)
 515                         return;
 516                 sel = curr = prev;
 517                 calcoffsets();
 518                 break;
 519         case XK_Return:
 520                 if((e->state & ShiftMask) || !sel)
 521                         fprintf(stdout, "%s", text);
 522                 else
 523                         fprintf(stdout, "%s", sel->text);
 524                 fflush(stdout);
 525                 running = False;
 526                 break;
 527         case XK_Right:
 528         case XK_Down:
 529                 if(cursor < len) {
 530                         do {
 531                                 cursor++;
 532                         } while(cursor < len && !IS_UTF8_1ST_CHAR(text[cursor]));
 533                 } else if(sel && sel->right) {
 534                         sel=sel->right;
 535                         if(sel == next) {
 536                                 curr = next;
 537                                 calcoffsets();
 538                         }
 539                 }
 540                 else
 541                         return;
 542                 break;
 543         case XK_Tab:
 544                 if(!sel)
 545                         return;
 546                 strncpy(text, sel->text, sizeof text);
 547                 cursor = strlen(text);
 548                 match(text);
 549                 break;
 550         }
 551         drawmenu();
 552 }
 553
 554 void
 555 match(char *pattern) {
 556         unsigned int plen;
 557         Item *i, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
 558
 559         if(!pattern)
 560                 return;
 561         plen = strlen(pattern);
 562         item = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
 563         for(i = allitems; i; i = i->next)
 564                 if(!fstrncmp(pattern, i->text, plen + 1))
 565                         appenditem(i, &lexact, &exactend);
 566                 else if(!fstrncmp(pattern, i->text, plen))
 567                         appenditem(i, &lprefix, &prefixend);
 568                 else if(fstrstr(i->text, pattern))
 569                         appenditem(i, &lsubstr, &substrend);
 570         if(lexact) {
 571                 item = lexact;
 572                 itemend = exactend;
 573         }
 574         if(lprefix) {
 575                 if(itemend) {
 576                         itemend->right = lprefix;
 577                         lprefix->left = itemend;
 578                 }
 579                 else
 580                         item = lprefix;
 581                 itemend = prefixend;
 582         }
 583         if(lsubstr) {
 584                 if(itemend) {
 585                         itemend->right = lsubstr;
 586                         lsubstr->left = itemend;
 587                 }
 588                 else
 589                         item = lsubstr;
 590         }
 591         curr = prev = next = sel = item;
 592         calcoffsets();
 593 }
 594
 595 void
 596 readstdin(void) {
 597         char *p, buf[sizeof text];
 598         unsigned int len = 0, max = 0;
 599         Item *i, *new;
 600
 601         i = NULL;
 602         while(fgets(buf, sizeof buf, stdin)) {
 603                 len = strlen(buf);
 604                 if(buf[len-1] == '\n')
 605                         buf[--len] = '\0';
 606                 if(!(p = strdup(buf)))
 607                         eprint("dmenu: cannot strdup %u bytes\n", len);
 608                 if(max < len || !maxname) {
 609                         maxname = p;
 610                         max = len;
 611                 }
 612                 if(!(new = malloc(sizeof *new)))
 613                         eprint("dmenu: cannot malloc %u bytes\n", sizeof *new);
 614                 new->next = new->left = new->right = NULL;
 615                 new->text = p;
 616                 if(!i)
 617                         allitems = new;
 618                 else
 619                         i->next = new;
 620                 i = new;
 621         }
 622 }
 623
 624 void
 625 run(void) {
 626         XEvent ev;
 627
 628         /* main event loop */
 629         while(running && !XNextEvent(dpy, &ev))
 630                 switch (ev.type) {
 631                 default:        /* ignore all crap */
 632                         break;
 633                 case KeyPress:
 634                         kpress(&ev.xkey);
 635                         break;
 636                 case Expose:
 637                         if(ev.xexpose.count == 0)
 638                                 drawmenu();
 639                         break;
 640                 case VisibilityNotify:
 641                         if (ev.xvisibility.state != VisibilityUnobscured)
 642                                 XRaiseWindow(dpy, win);
 643                         break;
 644                 }
 645 }
 646
 647 void
 648 setup(Bool topbar) {
 649         int i, j, x, y;
 650 #if XINERAMA
 651         int n;
 652         XineramaScreenInfo *info = NULL;
 653 #endif
 654         XModifierKeymap *modmap;
 655         XSetWindowAttributes wa;
 656         XWindowAttributes pwa;
 657
 658         /* init modifier map */
 659         modmap = XGetModifierMapping(dpy);
 660         for(i = 0; i < 8; i++)
 661                 for(j = 0; j < modmap->max_keypermod; j++) {
 662                         if(modmap->modifiermap[i * modmap->max_keypermod + j]
 663                         == XKeysymToKeycode(dpy, XK_Num_Lock))
 664                                 numlockmask = (1 << i);
 665                 }
 666         XFreeModifiermap(modmap);
 667
 668         /* style */
 669         dc.norm[ColBG] = getcolor(normbgcolor);
 670         dc.norm[ColFG] = getcolor(normfgcolor);
 671         dc.sel[ColBG] = getcolor(selbgcolor);
 672         dc.sel[ColFG] = getcolor(selfgcolor);
 673         initfont(font);
 674
 675         /* menu window */
 676         wa.override_redirect = True;
 677         wa.background_pixmap = ParentRelative;
 678         wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask | VisibilityChangeMask;
 679
 680         /* menu window geometry */
 681         mh = (dc.font.height + 2) * (lines + 1);
 682 #if XINERAMA
 683         if(parent == RootWindow(dpy, screen) && XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
 684                 i = 0;
 685                 if(n > 1) {
 686                         int di;
 687                         unsigned int dui;
 688                         Window dummy;
 689                         if(XQueryPointer(dpy, parent, &dummy, &dummy, &x, &y, &di, &di, &dui))
 690                                 for(i = 0; i < n; i++)
 691                                         if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
 692                                                 break;
 693                 }
 694                 x = info[i].x_org;
 695                 y = topbar ? info[i].y_org : info[i].y_org + info[i].height - mh;
 696                 mw = info[i].width;
 697                 XFree(info);
 698         }
 699         else
 700 #endif
 701         {
 702                 XGetWindowAttributes(dpy, parent, &pwa);
 703                 x = 0;
 704                 y = topbar ? 0 : pwa.height - mh;
 705                 mw = pwa.width;
 706         }
 707
 708         win = XCreateWindow(dpy, parent, x, y, mw, mh, 0,
 709                         DefaultDepth(dpy, screen), CopyFromParent,
 710                         DefaultVisual(dpy, screen),
 711                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
 712
 713         /* pixmap */
 714         dc.drawable = XCreatePixmap(dpy, parent, mw, mh, DefaultDepth(dpy, screen));
 715         dc.gc = XCreateGC(dpy, parent, 0, NULL);
 716         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
 717         if(!dc.font.set)
 718                 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
 719         if(maxname)
 720                 cmdw = MIN(textw(maxname), mw / 3);
 721         if(prompt)
 722                 promptw = MIN(textw(prompt), mw / 5);
 723         text[0] = '\0';
 724         match(text);
 725         XMapRaised(dpy, win);
 726 }
 727
 728 int
 729 textnw(const char *text, unsigned int len) {
 730         XRectangle r;
 731
 732         if(dc.font.set) {
 733                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
 734                 return r.width;
 735         }
 736         return XTextWidth(dc.font.xfont, text, len);
 737 }
 738
 739 int
 740 textw(const char *text) {
 741         return textnw(text, strlen(text)) + dc.font.height;
 742 }
 743
 744 int
 745 main(int argc, char *argv[]) {
 746         unsigned int i;
 747         Bool topbar = True;
 748
 749         /* command line args */
 750         for(i = 1; i < argc; i++)
 751                 if(!strcmp(argv[i], "-i")) {
 752                         fstrncmp = strncasecmp;
 753                         fstrstr = cistrstr;
 754                 }
 755                 else if(!strcmp(argv[i], "-b"))
 756                         topbar = False;
 757                 else if(!strcmp(argv[i], "-e")) {
 758                         if(++i < argc) parent = atoi(argv[i]);
 759                 }
 760                 else if(!strcmp(argv[i], "-l")) {
 761                         if(++i < argc) lines = atoi(argv[i]);
 762                         if(lines > 0)
 763                                 calcoffsets = calcoffsetsv;
 764                 }
 765                 else if(!strcmp(argv[i], "-fn")) {
 766                         if(++i < argc) font = argv[i];
 767                 }
 768                 else if(!strcmp(argv[i], "-nb")) {
 769                         if(++i < argc) normbgcolor = argv[i];
 770                 }
 771                 else if(!strcmp(argv[i], "-nf")) {
 772                         if(++i < argc) normfgcolor = argv[i];
 773                 }
 774                 else if(!strcmp(argv[i], "-p")) {
 775                         if(++i < argc) prompt = argv[i];
 776                 }
 777                 else if(!strcmp(argv[i], "-sb")) {
 778                         if(++i < argc) selbgcolor = argv[i];
 779                 }
 780                 else if(!strcmp(argv[i], "-sf")) {
 781                         if(++i < argc) selfgcolor = argv[i];
 782                 }
 783                 else if(!strcmp(argv[i], "-v"))
 784                         eprint("dmenu-"VERSION", © 2006-2010 dmenu engineers, see LICENSE for details\n");
 785                 else
 786                         eprint("usage: dmenu [-i] [-b] [-e <xid>] [-l <lines>] [-fn <font>] [-nb <color>]\n"
 787                                "             [-nf <color>] [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
 788         if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 789                 fprintf(stderr, "dmenu: warning: no locale support\n");
 790         if(!(dpy = XOpenDisplay(NULL)))
 791                 eprint("dmenu: cannot open display\n");
 792         screen = DefaultScreen(dpy);
 793         if(!parent)
 794                 parent = RootWindow(dpy, screen);
 795
 796         readstdin();
 797         running = grabkeyboard();
 798
 799         setup(topbar);
 800         drawmenu();
 801         XSync(dpy, False);
 802         run();
 803         cleanup();
 804         XCloseDisplay(dpy);
 805         return ret;
 806 }