dmenu.c (19760B) - raw

      1 /* See LICENSE file for copyright and license details. */
      2 #include <ctype.h>
      3 #include <locale.h>
      4 #include <stdio.h>
      5 #include <stdlib.h>
      6 #include <string.h>
      7 #include <strings.h>
      8 #include <time.h>
      9 #include <unistd.h>
     10 
     11 #include <X11/Xlib.h>
     12 #include <X11/Xatom.h>
     13 #include <X11/Xutil.h>
     14 #ifdef XINERAMA
     15 #include <X11/extensions/Xinerama.h>
     16 #endif
     17 #include <X11/Xft/Xft.h>
     18 
     19 #include "drw.h"
     20 #include "util.h"
     21 
     22 /* macros */
     23 #define INTERSECT(x,y,w,h,r)  (MAX(0, MIN((x)+(w),(r).x_org+(r).width)  - MAX((x),(r).x_org)) \
     24                              * MAX(0, MIN((y)+(h),(r).y_org+(r).height) - MAX((y),(r).y_org)))
     25 #define LENGTH(X)             (sizeof X / sizeof X[0])
     26 #define TEXTW(X)              (drw_fontset_getwidth(drw, (X)) + lrpad)
     27 
     28 /* enums */
     29 enum { SchemeNorm, SchemeSel, SchemeOut, SchemeLast }; /* color schemes */
     30 
     31 struct item {
     32 	char *text;
     33 	struct item *left, *right;
     34 	int out;
     35 };
     36 
     37 static char text[BUFSIZ] = "";
     38 static char *embed;
     39 static int bh, mw, mh;
     40 static int inputw = 0, promptw, passwd = 0;
     41 static int lrpad; /* sum of left and right padding */
     42 static size_t cursor;
     43 static struct item *items = NULL;
     44 static struct item *matches, *matchend;
     45 static struct item *prev, *curr, *next, *sel;
     46 static int mon = -1, screen;
     47 
     48 static Atom clip, utf8;
     49 static Display *dpy;
     50 static Window root, parentwin, win;
     51 static XIC xic;
     52 
     53 static Drw *drw;
     54 static Clr *scheme[SchemeLast];
     55 
     56 #include "config.h"
     57 
     58 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
     59 static char *(*fstrstr)(const char *, const char *) = strstr;
     60 
     61 static unsigned int
     62 textw_clamp(const char *str, unsigned int n)
     63 {
     64 	unsigned int w = drw_fontset_getwidth_clamp(drw, str, n) + lrpad;
     65 	return MIN(w, n);
     66 }
     67 
     68 static void
     69 appenditem(struct item *item, struct item **list, struct item **last)
     70 {
     71 	if (*last)
     72 		(*last)->right = item;
     73 	else
     74 		*list = item;
     75 
     76 	item->left = *last;
     77 	item->right = NULL;
     78 	*last = item;
     79 }
     80 
     81 static void
     82 calcoffsets(void)
     83 {
     84 	int i, n;
     85 
     86 	if (lines > 0)
     87 		n = lines * bh;
     88 	else
     89 		n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
     90 	/* calculate which items will begin the next page and previous page */
     91 	for (i = 0, next = curr; next; next = next->right)
     92 		if ((i += (lines > 0) ? bh : textw_clamp(next->text, n)) > n)
     93 			break;
     94 	for (i = 0, prev = curr; prev && prev->left; prev = prev->left)
     95 		if ((i += (lines > 0) ? bh : textw_clamp(prev->left->text, n)) > n)
     96 			break;
     97 }
     98 
     99 static void
    100 cleanup(void)
    101 {
    102 	size_t i;
    103 
    104 	XUngrabKey(dpy, AnyKey, AnyModifier, root);
    105 	for (i = 0; i < SchemeLast; i++)
    106 		free(scheme[i]);
    107 	for (i = 0; items && items[i].text; ++i)
    108 		free(items[i].text);
    109 	free(items);
    110 	drw_free(drw);
    111 	XSync(dpy, False);
    112 	XCloseDisplay(dpy);
    113 }
    114 
    115 static char *
    116 cistrstr(const char *h, const char *n)
    117 {
    118 	size_t i;
    119 
    120 	if (!n[0])
    121 		return (char *)h;
    122 
    123 	for (; *h; ++h) {
    124 		for (i = 0; n[i] && tolower((unsigned char)n[i]) ==
    125 		            tolower((unsigned char)h[i]); ++i)
    126 			;
    127 		if (n[i] == '\0')
    128 			return (char *)h;
    129 	}
    130 	return NULL;
    131 }
    132 
    133 static int
    134 drawitem(struct item *item, int x, int y, int w)
    135 {
    136 	if (item == sel)
    137 		drw_setscheme(drw, scheme[SchemeSel]);
    138 	else if (item->out)
    139 		drw_setscheme(drw, scheme[SchemeOut]);
    140 	else
    141 		drw_setscheme(drw, scheme[SchemeNorm]);
    142 
    143 	return drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
    144 }
    145 
    146 static void
    147 drawmenu(void)
    148 {
    149 	unsigned int curpos;
    150 	struct item *item;
    151 	int x = 0, y = 0, w;
    152 	char *censort;
    153 
    154 	drw_setscheme(drw, scheme[SchemeNorm]);
    155 	drw_rect(drw, 0, 0, mw, mh, 1, 1);
    156 
    157 	if (prompt && *prompt) {
    158 		drw_setscheme(drw, scheme[SchemeSel]);
    159 		x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
    160 	}
    161 	/* draw input field */
    162 	w = (lines > 0 || !matches) ? mw - x : inputw;
    163 	drw_setscheme(drw, scheme[SchemeNorm]);
    164 	if (passwd) {
    165 		censort = ecalloc(1, sizeof(text));
    166 		memset(censort, '-', strlen(text));
    167 		drw_text(drw, x, 0, w, bh, lrpad / 2, censort, 0);
    168 		free(censort);
    169 	} else drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
    170 
    171 	curpos = TEXTW(text) - TEXTW(&text[cursor]);
    172 	if ((curpos += lrpad / 2 - 1) < w) {
    173 		drw_setscheme(drw, scheme[SchemeNorm]);
    174 		drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
    175 	}
    176 
    177 	if (lines > 0) {
    178 		/* draw vertical list */
    179 		for (item = curr; item != next; item = item->right)
    180 			drawitem(item, x, y += bh, mw - x);
    181 	} else if (matches) {
    182 		/* draw horizontal list */
    183 		x += inputw;
    184 		w = TEXTW("<");
    185 		if (curr->left) {
    186 			drw_setscheme(drw, scheme[SchemeNorm]);
    187 			drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
    188 		}
    189 		x += w;
    190 		for (item = curr; item != next; item = item->right)
    191 			x = drawitem(item, x, 0, textw_clamp(item->text, mw - x - TEXTW(">")));
    192 		if (next) {
    193 			w = TEXTW(">");
    194 			drw_setscheme(drw, scheme[SchemeNorm]);
    195 			drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
    196 		}
    197 	}
    198 	drw_map(drw, win, 0, 0, mw, mh);
    199 }
    200 
    201 static void
    202 grabfocus(void)
    203 {
    204 	struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000  };
    205 	Window focuswin;
    206 	int i, revertwin;
    207 
    208 	for (i = 0; i < 100; ++i) {
    209 		XGetInputFocus(dpy, &focuswin, &revertwin);
    210 		if (focuswin == win)
    211 			return;
    212 		XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
    213 		nanosleep(&ts, NULL);
    214 	}
    215 	die("cannot grab focus");
    216 }
    217 
    218 static void
    219 grabkeyboard(void)
    220 {
    221 	struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000  };
    222 	int i;
    223 
    224 	if (embed)
    225 		return;
    226 	/* try to grab keyboard, we may have to wait for another process to ungrab */
    227 	for (i = 0; i < 1000; i++) {
    228 		if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
    229 		                  GrabModeAsync, CurrentTime) == GrabSuccess)
    230 			return;
    231 		nanosleep(&ts, NULL);
    232 	}
    233 	die("cannot grab keyboard");
    234 }
    235 
    236 static void
    237 match(void)
    238 {
    239 	static char **tokv = NULL;
    240 	static int tokn = 0;
    241 
    242 	char buf[sizeof text], *s;
    243 	int i, tokc = 0;
    244 	size_t len, textsize;
    245 	struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
    246 
    247 	strcpy(buf, text);
    248 	/* separate input text into tokens to be matched individually */
    249 	for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
    250 		if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
    251 			die("cannot realloc %zu bytes:", tokn * sizeof *tokv);
    252 	len = tokc ? strlen(tokv[0]) : 0;
    253 
    254 	matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
    255 	textsize = strlen(text) + 1;
    256 	for (item = items; item && item->text; item++) {
    257 		for (i = 0; i < tokc; i++)
    258 			if (!fstrstr(item->text, tokv[i]))
    259 				break;
    260 		if (i != tokc) /* not all tokens match */
    261 			continue;
    262 		/* exact matches go first, then prefixes, then substrings */
    263 		if (!tokc || !fstrncmp(text, item->text, textsize))
    264 			appenditem(item, &matches, &matchend);
    265 		else if (!fstrncmp(tokv[0], item->text, len))
    266 			appenditem(item, &lprefix, &prefixend);
    267 		else
    268 			appenditem(item, &lsubstr, &substrend);
    269 	}
    270 	if (lprefix) {
    271 		if (matches) {
    272 			matchend->right = lprefix;
    273 			lprefix->left = matchend;
    274 		} else
    275 			matches = lprefix;
    276 		matchend = prefixend;
    277 	}
    278 	if (lsubstr) {
    279 		if (matches) {
    280 			matchend->right = lsubstr;
    281 			lsubstr->left = matchend;
    282 		} else
    283 			matches = lsubstr;
    284 		matchend = substrend;
    285 	}
    286 	curr = sel = matches;
    287 	calcoffsets();
    288 }
    289 
    290 static void
    291 insert(const char *str, ssize_t n)
    292 {
    293 	if (strlen(text) + n > sizeof text - 1)
    294 		return;
    295 	/* move existing text out of the way, insert new text, and update cursor */
    296 	memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
    297 	if (n > 0)
    298 		memcpy(&text[cursor], str, n);
    299 	cursor += n;
    300 	match();
    301 }
    302 
    303 static size_t
    304 nextrune(int inc)
    305 {
    306 	ssize_t n;
    307 
    308 	/* return location of next utf8 rune in the given direction (+1 or -1) */
    309 	for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
    310 		;
    311 	return n;
    312 }
    313 
    314 static void
    315 movewordedge(int dir)
    316 {
    317 	if (dir < 0) { /* move cursor to the start of the word*/
    318 		while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
    319 			cursor = nextrune(-1);
    320 		while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
    321 			cursor = nextrune(-1);
    322 	} else { /* move cursor to the end of the word */
    323 		while (text[cursor] && strchr(worddelimiters, text[cursor]))
    324 			cursor = nextrune(+1);
    325 		while (text[cursor] && !strchr(worddelimiters, text[cursor]))
    326 			cursor = nextrune(+1);
    327 	}
    328 }
    329 
    330 static void
    331 keypress(XKeyEvent *ev)
    332 {
    333 	char buf[32];
    334 	int len;
    335 	KeySym ksym;
    336 	Status status;
    337 
    338 	len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
    339 	switch (status) {
    340 	default: /* XLookupNone, XBufferOverflow */
    341 		return;
    342 	case XLookupChars:
    343 		goto insert;
    344 	case XLookupKeySym:
    345 	case XLookupBoth:
    346 		break;
    347 	}
    348 
    349 	if (ev->state & ControlMask) {
    350 		switch(ksym) {
    351 		case XK_a: ksym = XK_Home;      break;
    352 		case XK_b: ksym = XK_Left;      break;
    353 		case XK_c: ksym = XK_Escape;    break;
    354 		case XK_d: ksym = XK_Delete;    break;
    355 		case XK_e: ksym = XK_End;       break;
    356 		case XK_f: ksym = XK_Right;     break;
    357 		case XK_g: ksym = XK_Escape;    break;
    358 		case XK_h: ksym = XK_BackSpace; break;
    359 		case XK_i: ksym = XK_Tab;       break;
    360 		case XK_j: /* fallthrough */
    361 		case XK_J: /* fallthrough */
    362 		case XK_m: /* fallthrough */
    363 		case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
    364 		case XK_n: ksym = XK_Down;      break;
    365 		case XK_p: ksym = XK_Up;        break;
    366 
    367 		case XK_k: /* delete right */
    368 			text[cursor] = '\0';
    369 			match();
    370 			break;
    371 		case XK_u: /* delete left */
    372 			insert(NULL, 0 - cursor);
    373 			break;
    374 		case XK_w: /* delete word */
    375 			while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
    376 				insert(NULL, nextrune(-1) - cursor);
    377 			while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
    378 				insert(NULL, nextrune(-1) - cursor);
    379 			break;
    380 		case XK_y: /* paste selection */
    381 		case XK_Y:
    382 			XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
    383 			                  utf8, utf8, win, CurrentTime);
    384 			return;
    385 		case XK_Left:
    386 		case XK_KP_Left:
    387 			movewordedge(-1);
    388 			goto draw;
    389 		case XK_Right:
    390 		case XK_KP_Right:
    391 			movewordedge(+1);
    392 			goto draw;
    393 		case XK_Return:
    394 		case XK_KP_Enter:
    395 			break;
    396 		case XK_bracketleft:
    397 			cleanup();
    398 			exit(1);
    399 		default:
    400 			return;
    401 		}
    402 	} else if (ev->state & Mod1Mask) {
    403 		switch(ksym) {
    404 		case XK_b:
    405 			movewordedge(-1);
    406 			goto draw;
    407 		case XK_f:
    408 			movewordedge(+1);
    409 			goto draw;
    410 		case XK_g: ksym = XK_Home;  break;
    411 		case XK_G: ksym = XK_End;   break;
    412 		case XK_h: ksym = XK_Up;    break;
    413 		case XK_j: ksym = XK_Next;  break;
    414 		case XK_k: ksym = XK_Prior; break;
    415 		case XK_l: ksym = XK_Down;  break;
    416 		default:
    417 			return;
    418 		}
    419 	}
    420 
    421 	switch(ksym) {
    422 	default:
    423 insert:
    424 		if (!iscntrl((unsigned char)*buf))
    425 			insert(buf, len);
    426 		break;
    427 	case XK_Delete:
    428 	case XK_KP_Delete:
    429 		if (text[cursor] == '\0')
    430 			return;
    431 		cursor = nextrune(+1);
    432 		/* fallthrough */
    433 	case XK_BackSpace:
    434 		if (cursor == 0)
    435 			return;
    436 		insert(NULL, nextrune(-1) - cursor);
    437 		break;
    438 	case XK_End:
    439 	case XK_KP_End:
    440 		if (text[cursor] != '\0') {
    441 			cursor = strlen(text);
    442 			break;
    443 		}
    444 		if (next) {
    445 			/* jump to end of list and position items in reverse */
    446 			curr = matchend;
    447 			calcoffsets();
    448 			curr = prev;
    449 			calcoffsets();
    450 			while (next && (curr = curr->right))
    451 				calcoffsets();
    452 		}
    453 		sel = matchend;
    454 		break;
    455 	case XK_Escape:
    456 		cleanup();
    457 		exit(1);
    458 	case XK_Home:
    459 	case XK_KP_Home:
    460 		if (sel == matches) {
    461 			cursor = 0;
    462 			break;
    463 		}
    464 		sel = curr = matches;
    465 		calcoffsets();
    466 		break;
    467 	case XK_Left:
    468 	case XK_KP_Left:
    469 		if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
    470 			cursor = nextrune(-1);
    471 			break;
    472 		}
    473 		if (lines > 0)
    474 			return;
    475 		/* fallthrough */
    476 	case XK_Up:
    477 	case XK_KP_Up:
    478 		if (sel && sel->left && (sel = sel->left)->right == curr) {
    479 			curr = prev;
    480 			calcoffsets();
    481 		}
    482 		break;
    483 	case XK_Next:
    484 	case XK_KP_Next:
    485 		if (!next)
    486 			return;
    487 		sel = curr = next;
    488 		calcoffsets();
    489 		break;
    490 	case XK_Prior:
    491 	case XK_KP_Prior:
    492 		if (!prev)
    493 			return;
    494 		sel = curr = prev;
    495 		calcoffsets();
    496 		break;
    497 	case XK_Return:
    498 	case XK_KP_Enter:
    499 		puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
    500 		if (!(ev->state & ControlMask)) {
    501 			cleanup();
    502 			exit(0);
    503 		}
    504 		if (sel)
    505 			sel->out = 1;
    506 		break;
    507 	case XK_Right:
    508 	case XK_KP_Right:
    509 		if (text[cursor] != '\0') {
    510 			cursor = nextrune(+1);
    511 			break;
    512 		}
    513 		if (lines > 0)
    514 			return;
    515 		/* fallthrough */
    516 	case XK_Down:
    517 	case XK_KP_Down:
    518 		if (sel && sel->right && (sel = sel->right) == next) {
    519 			curr = next;
    520 			calcoffsets();
    521 		}
    522 		break;
    523 	case XK_Tab:
    524 		if (!sel)
    525 			return;
    526 		cursor = strnlen(sel->text, sizeof text - 1);
    527 		memcpy(text, sel->text, cursor);
    528 		text[cursor] = '\0';
    529 		match();
    530 		break;
    531 	}
    532 
    533 draw:
    534 	drawmenu();
    535 }
    536 
    537 static void
    538 paste(void)
    539 {
    540 	char *p, *q;
    541 	int di;
    542 	unsigned long dl;
    543 	Atom da;
    544 
    545 	/* we have been given the current selection, now insert it into input */
    546 	if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
    547 	                   utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
    548 	    == Success && p) {
    549 		insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
    550 		XFree(p);
    551 	}
    552 	drawmenu();
    553 }
    554 
    555 static void
    556 readstdin(void)
    557 {
    558 	char *line = NULL;
    559 	size_t i, junk, size = 0;
    560 	ssize_t len;
    561 
    562 	if(passwd){
    563 	inputw = lines = 0;
    564 		return;
    565 	}
    566 
    567 	/* read each line from stdin and add it to the item list */
    568 	for (i = 0; (len = getline(&line, &junk, stdin)) != -1; i++, line = NULL) {
    569 		if (i + 1 >= size / sizeof *items)
    570 			if (!(items = realloc(items, (size += BUFSIZ))))
    571 				die("cannot realloc %zu bytes:", size);
    572 		if (line[len - 1] == '\n')
    573 			line[len - 1] = '\0';
    574 		items[i].text = line;
    575 		items[i].out = 0;
    576 	}
    577 	if (items)
    578 		items[i].text = NULL;
    579 	lines = MIN(lines, i);
    580 }
    581 
    582 static void
    583 run(void)
    584 {
    585 	XEvent ev;
    586 
    587 	while (!XNextEvent(dpy, &ev)) {
    588 		if (XFilterEvent(&ev, win))
    589 			continue;
    590 		switch(ev.type) {
    591 		case DestroyNotify:
    592 			if (ev.xdestroywindow.window != win)
    593 				break;
    594 			cleanup();
    595 			exit(1);
    596 		case Expose:
    597 			if (ev.xexpose.count == 0)
    598 				drw_map(drw, win, 0, 0, mw, mh);
    599 			break;
    600 		case FocusIn:
    601 			/* regrab focus from parent window */
    602 			if (ev.xfocus.window != win)
    603 				grabfocus();
    604 			break;
    605 		case KeyPress:
    606 			keypress(&ev.xkey);
    607 			break;
    608 		case SelectionNotify:
    609 			if (ev.xselection.property == utf8)
    610 				paste();
    611 			break;
    612 		case VisibilityNotify:
    613 			if (ev.xvisibility.state != VisibilityUnobscured)
    614 				XRaiseWindow(dpy, win);
    615 			break;
    616 		}
    617 	}
    618 }
    619 
    620 static void
    621 setup(void)
    622 {
    623 	int x, y, i, j;
    624 	unsigned int du, tmp;
    625 	XSetWindowAttributes swa;
    626 	XIM xim;
    627 	Window w, dw, *dws;
    628 	XWindowAttributes wa;
    629 	XClassHint ch = {"dmenu", "dmenu"};
    630 	struct item *item;
    631 #ifdef XINERAMA
    632 	XineramaScreenInfo *info;
    633 	Window pw;
    634 	int a, di, n, area = 0;
    635 #endif
    636 	/* init appearance */
    637 	for (j = 0; j < SchemeLast; j++)
    638 		scheme[j] = drw_scm_create(drw, colors[j], 2);
    639 
    640 	clip = XInternAtom(dpy, "CLIPBOARD",   False);
    641 	utf8 = XInternAtom(dpy, "UTF8_STRING", False);
    642 
    643 	/* calculate menu geometry */
    644 	bh = drw->fonts->h * 1.35;
    645 	lines = MAX(lines, 0);
    646 	mh = (lines + 1) * bh;
    647 #ifdef XINERAMA
    648 	i = 0;
    649 	if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
    650 		XGetInputFocus(dpy, &w, &di);
    651 		if (mon >= 0 && mon < n)
    652 			i = mon;
    653 		else if (w != root && w != PointerRoot && w != None) {
    654 			/* find top-level window containing current input focus */
    655 			do {
    656 				if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
    657 					XFree(dws);
    658 			} while (w != root && w != pw);
    659 			/* find xinerama screen with which the window intersects most */
    660 			if (XGetWindowAttributes(dpy, pw, &wa))
    661 				for (j = 0; j < n; j++)
    662 					if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
    663 						area = a;
    664 						i = j;
    665 					}
    666 		}
    667 		/* no focused window is on screen, so use pointer location instead */
    668 		if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
    669 			for (i = 0; i < n; i++)
    670 				if (INTERSECT(x, y, 1, 1, info[i]) != 0)
    671 					break;
    672 
    673 		x = info[i].x_org;
    674 		y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
    675 		mw = info[i].width;
    676 		XFree(info);
    677 	} else
    678 #endif
    679 	{
    680 		if (!XGetWindowAttributes(dpy, parentwin, &wa))
    681 			die("could not get embedding window attributes: 0x%lx",
    682 			    parentwin);
    683 		x = 0;
    684 		y = topbar ? 0 : wa.height - mh;
    685 		mw = wa.width;
    686 	}
    687 	promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
    688 	for (item = items; item && item->text; ++item) {
    689 		if ((tmp = textw_clamp(item->text, mw/3)) > inputw) {
    690 			if ((inputw = tmp) == mw/3)
    691 				break;
    692 		}
    693 	}
    694 	match();
    695 
    696 	/* create menu window */
    697 	swa.override_redirect = True;
    698 	swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
    699 	swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
    700 	win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
    701 	                    CopyFromParent, CopyFromParent, CopyFromParent,
    702 	                    CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
    703 	XSetClassHint(dpy, win, &ch);
    704 
    705 
    706 	/* input methods */
    707 	if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL)
    708 		die("XOpenIM failed: could not open input device");
    709 
    710 	xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
    711 	                XNClientWindow, win, XNFocusWindow, win, NULL);
    712 
    713 	XMapRaised(dpy, win);
    714 	if (embed) {
    715 		XSelectInput(dpy, parentwin, FocusChangeMask | SubstructureNotifyMask);
    716 		if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
    717 			for (i = 0; i < du && dws[i] != win; ++i)
    718 				XSelectInput(dpy, dws[i], FocusChangeMask);
    719 			XFree(dws);
    720 		}
    721 		grabfocus();
    722 	}
    723 	drw_resize(drw, mw, mh);
    724 	drawmenu();
    725 }
    726 
    727 static void
    728 usage(void)
    729 {
    730 	die("usage: dmenu [-bfiPv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
    731 	    "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]");
    732 }
    733 
    734 int
    735 main(int argc, char *argv[])
    736 {
    737 	XWindowAttributes wa;
    738 	int i, fast = 0;
    739 
    740 	for (i = 1; i < argc; i++)
    741 		/* these options take no arguments */
    742 		if (!strcmp(argv[i], "-v")) {      /* prints version information */
    743 			puts("dmenu-"VERSION);
    744 			exit(0);
    745 		} else if (!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
    746 			topbar = 0;
    747 		else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
    748 			fast = 1;
    749 		else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
    750 			fstrncmp = strncasecmp;
    751 			fstrstr = cistrstr;
    752 		} else if (!strcmp(argv[i], "-P"))   /* is the input a password */
    753 			passwd = 1;
    754 		else if (i + 1 == argc)
    755 			usage();
    756 		/* these options take one argument */
    757 		else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
    758 			lines = atoi(argv[++i]);
    759 		else if (!strcmp(argv[i], "-m"))
    760 			mon = atoi(argv[++i]);
    761 		else if (!strcmp(argv[i], "-p"))   /* adds prompt to left of input field */
    762 			prompt = argv[++i];
    763 		else if (!strcmp(argv[i], "-fn"))  /* font or font set */
    764 			fonts[0] = argv[++i];
    765 		else if (!strcmp(argv[i], "-nb"))  /* normal background color */
    766 			colors[SchemeNorm][ColBg] = argv[++i];
    767 		else if (!strcmp(argv[i], "-nf"))  /* normal foreground color */
    768 			colors[SchemeNorm][ColFg] = argv[++i];
    769 		else if (!strcmp(argv[i], "-sb"))  /* selected background color */
    770 			colors[SchemeSel][ColBg] = argv[++i];
    771 		else if (!strcmp(argv[i], "-sf"))  /* selected foreground color */
    772 			colors[SchemeSel][ColFg] = argv[++i];
    773 		else if (!strcmp(argv[i], "-w"))   /* embedding window id */
    774 			embed = argv[++i];
    775 		else
    776 			usage();
    777 
    778 	if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
    779 		fputs("warning: no locale support\n", stderr);
    780 	if (!(dpy = XOpenDisplay(NULL)))
    781 		die("cannot open display");
    782 	screen = DefaultScreen(dpy);
    783 	root = RootWindow(dpy, screen);
    784 	if (!embed || !(parentwin = strtol(embed, NULL, 0)))
    785 		parentwin = root;
    786 	if (!XGetWindowAttributes(dpy, parentwin, &wa))
    787 		die("could not get embedding window attributes: 0x%lx",
    788 		    parentwin);
    789 	drw = drw_create(dpy, screen, root, wa.width, wa.height);
    790 	if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
    791 		die("no fonts could be loaded.");
    792 	lrpad = drw->fonts->h;
    793 
    794 #ifdef __OpenBSD__
    795 	if (pledge("stdio rpath", NULL) == -1)
    796 		die("pledge");
    797 #endif
    798 
    799 	if (fast && !isatty(0)) {
    800 		grabkeyboard();
    801 		readstdin();
    802 	} else {
    803 		readstdin();
    804 		grabkeyboard();
    805 	}
    806 	setup();
    807 	run();
    808 
    809 	return 1; /* unreachable */
    810 }