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