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[dmenu.git] / 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 drawmenu(void);
56 static void drawmenuh(void);
57 static void drawmenuv(void);
58 static void drawtext(const char *text, unsigned long col[ColLast]);
59 static void eprint(const char *errstr, ...);
60 static unsigned long getcolor(const char *colstr);
61 static Bool grabkeyboard(void);
62 static void initfont(const char *fontstr);
63 static void kpress(XKeyEvent * e);
64 static void match(char *pattern);
65 static void readstdin(void);
66 static void run(void);
67 static void setup(Bool topbar);
68 static int textnw(const char *text, unsigned int len);
69 static int textw(const char *text);
70
71 #include "config.h"
72
73 /* variables */
74 static char *maxname = NULL;
75 static char *prompt = NULL;
76 static char text[4096];
77 static int cmdw = 0;
78 static int promptw = 0;
79 static int ret = 0;
80 static int cursor = 0;
81 static int screen;
82 static unsigned int mw, mh;
83 static unsigned int numlockmask = 0;
84 static Bool running = True;
85 static Display *dpy;
86 static DC dc;
87 static Item *allitems = NULL; /* first of all items */
88 static Item *item = NULL; /* first of pattern matching items */
89 static Item *sel = NULL;
90 static Item *next = NULL;
91 static Item *prev = NULL;
92 static Item *curr = NULL;
93 static Window root, win;
94 static int (*fstrncmp)(const char *, const char *, size_t n) = strncmp;
95 static char *(*fstrstr)(const char *, const char *) = strstr;
96 static Bool vlist = False;
97 static unsigned int lines = 5;
98 static void (*calcoffsets)(void) = calcoffsetsh;
99
100 void
101 appenditem(Item *i, Item **list, Item **last) {
102 if(!(*last))
103 *list = i;
104 else
105 (*last)->right = i;
106 i->left = *last;
107 i->right = NULL;
108 *last = i;
109 }
110
111 void
112 calcoffsetsh(void) {
113 int tw;
114 unsigned int w;
115
116 if(!curr)
117 return;
118 w = promptw + cmdw + 2 * spaceitem;
119 for(next = curr; next; next=next->right) {
120 tw = textw(next->text);
121 if(tw > mw / 3)
122 tw = mw / 3;
123 w += tw;
124 if(w > mw)
125 break;
126 }
127 w = promptw + cmdw + 2 * spaceitem;
128 for(prev = curr; prev && prev->left; prev=prev->left) {
129 tw = textw(prev->left->text);
130 if(tw > mw / 3)
131 tw = mw / 3;
132 w += tw;
133 if(w > mw)
134 break;
135 }
136 }
137
138 void
139 calcoffsetsv(void) {
140 static unsigned int w;
141
142 if(!curr)
143 return;
144 w = (dc.font.height + 2) * (lines + 1);
145 for(next = curr; next; next=next->right) {
146 w -= dc.font.height + 2;
147 if(w <= 0)
148 break;
149 }
150 w = (dc.font.height + 2) * (lines + 1);
151 for(prev = curr; prev && prev->left; prev=prev->left) {
152 w -= dc.font.height + 2;
153 if(w <= 0)
154 break;
155 }
156 }
157
158 char *
159 cistrstr(const char *s, const char *sub) {
160 int c, csub;
161 unsigned int len;
162
163 if(!sub)
164 return (char *)s;
165 if((c = *sub++) != 0) {
166 c = tolower(c);
167 len = strlen(sub);
168 do {
169 do {
170 if((csub = *s++) == 0)
171 return NULL;
172 }
173 while(tolower(csub) != c);
174 }
175 while(strncasecmp(s, sub, len) != 0);
176 s--;
177 }
178 return (char *)s;
179 }
180
181 void
182 cleanup(void) {
183 Item *itm;
184
185 while(allitems) {
186 itm = allitems->next;
187 free(allitems->text);
188 free(allitems);
189 allitems = itm;
190 }
191 if(dc.font.set)
192 XFreeFontSet(dpy, dc.font.set);
193 else
194 XFreeFont(dpy, dc.font.xfont);
195 XFreePixmap(dpy, dc.drawable);
196 XFreeGC(dpy, dc.gc);
197 XDestroyWindow(dpy, win);
198 XUngrabKeyboard(dpy, CurrentTime);
199 }
200
201 void
202 drawcursor(void) {
203 XRectangle r = { dc.x, dc.y + 2, 1, dc.font.height - 2 };
204
205 r.x += textnw(text, cursor) + dc.font.height / 2;
206
207 XSetForeground(dpy, dc.gc, dc.norm[ColFG]);
208 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
209 }
210
211 void
212 drawmenu(void) {
213 dc.x = 0;
214 dc.y = 0;
215 dc.w = mw;
216 dc.h = mh;
217 drawtext(NULL, dc.norm);
218 /* print prompt? */
219 if(promptw) {
220 dc.w = promptw;
221 drawtext(prompt, dc.sel);
222 }
223 dc.x += promptw;
224 dc.w = mw - promptw;
225 /* print command */
226 if(cmdw && item)
227 dc.w = cmdw;
228 drawtext(text[0] ? text : NULL, dc.norm);
229 drawcursor();
230 dc.x += cmdw;
231 if(curr) {
232 if(vlist)
233 drawmenuv();
234 else
235 drawmenuh();
236 }
237 XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
238 XFlush(dpy);
239 }
240
241 void
242 drawmenuh(void) {
243 Item *i;
244
245 dc.w = spaceitem;
246 drawtext((curr && curr->left) ? "<" : NULL, dc.norm);
247 dc.x += dc.w;
248 /* determine maximum items */
249 for(i = curr; i != next; i=i->right) {
250 dc.w = textw(i->text);
251 if(dc.w > mw / 3)
252 dc.w = mw / 3;
253 drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
254 dc.x += dc.w;
255 }
256 dc.x = mw - spaceitem;
257 dc.w = spaceitem;
258 drawtext(next ? ">" : NULL, dc.norm);
259 }
260
261 void
262 drawmenuv(void) {
263 Item *i;
264
265 dc.x = 0;
266 dc.w = mw;
267 dc.y += dc.font.height + 2;
268 /* determine maximum items */
269 for(i = curr; i != next; i=i->right) {
270 drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
271 dc.y += dc.font.height + 2;
272 }
273 drawtext(NULL, dc.norm);
274 }
275
276 void
277 drawtext(const char *text, unsigned long col[ColLast]) {
278 char buf[256];
279 int i, x, y, h, len, olen;
280 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
281
282 XSetForeground(dpy, dc.gc, col[ColBG]);
283 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
284 if(!text)
285 return;
286 olen = strlen(text);
287 h = dc.font.height;
288 y = dc.y + ((h+2) / 2) - (h / 2) + dc.font.ascent;
289 x = dc.x + (h / 2);
290 /* shorten text if necessary */
291 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
292 if(!len)
293 return;
294 memcpy(buf, text, len);
295 if(len < olen)
296 for(i = len; i && i > len - 3; buf[--i] = '.');
297 XSetForeground(dpy, dc.gc, col[ColFG]);
298 if(dc.font.set)
299 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
300 else
301 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
302 }
303
304 void
305 eprint(const char *errstr, ...) {
306 va_list ap;
307
308 va_start(ap, errstr);
309 vfprintf(stderr, errstr, ap);
310 va_end(ap);
311 exit(EXIT_FAILURE);
312 }
313
314 unsigned long
315 getcolor(const char *colstr) {
316 Colormap cmap = DefaultColormap(dpy, screen);
317 XColor color;
318
319 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
320 eprint("error, cannot allocate color '%s'\n", colstr);
321 return color.pixel;
322 }
323
324 Bool
325 grabkeyboard(void) {
326 unsigned int len;
327
328 for(len = 1000; len; len--) {
329 if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
330 == GrabSuccess)
331 break;
332 usleep(1000);
333 }
334 return len > 0;
335 }
336
337 void
338 initfont(const char *fontstr) {
339 char *def, **missing;
340 int i, n;
341
342 if(!fontstr || fontstr[0] == '\0')
343 eprint("error, cannot load font: '%s'\n", fontstr);
344 missing = NULL;
345 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
346 if(missing)
347 XFreeStringList(missing);
348 if(dc.font.set) {
349 XFontSetExtents *font_extents;
350 XFontStruct **xfonts;
351 char **font_names;
352 dc.font.ascent = dc.font.descent = 0;
353 font_extents = XExtentsOfFontSet(dc.font.set);
354 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
355 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
356 if(dc.font.ascent < (*xfonts)->ascent)
357 dc.font.ascent = (*xfonts)->ascent;
358 if(dc.font.descent < (*xfonts)->descent)
359 dc.font.descent = (*xfonts)->descent;
360 xfonts++;
361 }
362 }
363 else {
364 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
365 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
366 eprint("error, cannot load font: '%s'\n", fontstr);
367 dc.font.ascent = dc.font.xfont->ascent;
368 dc.font.descent = dc.font.xfont->descent;
369 }
370 dc.font.height = dc.font.ascent + dc.font.descent;
371 }
372
373 void
374 kpress(XKeyEvent * e) {
375 char buf[32];
376 int i, num;
377 unsigned int len;
378 KeySym ksym;
379
380 len = strlen(text);
381 buf[0] = 0;
382 num = XLookupString(e, buf, sizeof buf, &ksym, NULL);
383 if(IsKeypadKey(ksym)) {
384 if(ksym == XK_KP_Enter)
385 ksym = XK_Return;
386 else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
387 ksym = (ksym - XK_KP_0) + XK_0;
388 }
389 if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
390 || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
391 || IsPrivateKeypadKey(ksym))
392 return;
393 /* first check if a control mask is omitted */
394 if(e->state & ControlMask) {
395 switch (ksym) {
396 default: /* ignore other control sequences */
397 return;
398 case XK_bracketleft:
399 ksym = XK_Escape;
400 break;
401 case XK_h:
402 case XK_H:
403 ksym = XK_BackSpace;
404 break;
405 case XK_i:
406 case XK_I:
407 ksym = XK_Tab;
408 break;
409 case XK_j:
410 case XK_J:
411 ksym = XK_Return;
412 break;
413 case XK_u:
414 case XK_U:
415 text[0] = 0;
416 match(text);
417 drawmenu();
418 break;
419 case XK_w:
420 case XK_W:
421 if(len) {
422 i = len - 1;
423 while(i >= 0 && text[i] == ' ')
424 text[i--] = 0;
425 while(i >= 0 && text[i] != ' ')
426 text[i--] = 0;
427 match(text);
428 drawmenu();
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 *c;
458 if(!(fp = (FILE*)popen("sselp", "r")))
459 eprint("dmenu: Could not popen sselp\n");
460 c = fgets(text + len, sizeof(text) - len, fp);
461 pclose(fp);
462 if(c == NULL)
463 return;
464 }
465 len = strlen(text);
466 if(len && text[len-1] == '\n')
467 text[--len] = '\0';
468 match(text);
469 drawmenu();
470 return;
471 }
472 }
473 switch(ksym) {
474 default:
475 if(num && !iscntrl((int) buf[0])) {
476 buf[num] = 0;
477 memmove(text + cursor + num, text + cursor, sizeof text - cursor);
478 strncpy(text + cursor, buf, sizeof text - cursor);
479 cursor+=num;
480 match(text);
481 }
482 break;
483 case XK_BackSpace:
484 if(cursor > 0) {
485 memmove(text + cursor + -1, text + cursor, sizeof text - cursor);
486 cursor--;
487 match(text);
488 }
489 break;
490 case XK_End:
491 if(!item)
492 return;
493 while(next) {
494 sel = curr = next;
495 calcoffsets();
496 }
497 while(sel && sel->right)
498 sel = sel->right;
499 break;
500 case XK_Escape:
501 ret = 1;
502 running = False;
503 break;
504 case XK_Home:
505 if(!item)
506 return;
507 sel = curr = item;
508 calcoffsets();
509 break;
510 case XK_Left:
511 case XK_Up:
512 if(sel && sel->left){
513 sel=sel->left;
514 if(sel->right == curr) {
515 curr = prev;
516 calcoffsets();
517 }
518 }
519 else if(cursor > 0)
520 cursor--;
521 else
522 return;
523 break;
524 case XK_Next:
525 if(!next)
526 return;
527 sel = curr = next;
528 calcoffsets();
529 break;
530 case XK_Prior:
531 if(!prev)
532 return;
533 sel = curr = prev;
534 calcoffsets();
535 break;
536 case XK_Return:
537 if((e->state & ShiftMask) && *text)
538 fprintf(stdout, "%s", text);
539 else if(sel)
540 fprintf(stdout, "%s", sel->text);
541 else if(*text)
542 fprintf(stdout, "%s", text);
543 fflush(stdout);
544 running = False;
545 break;
546 case XK_Right:
547 case XK_Down:
548 if(cursor < len)
549 cursor++;
550 else if(sel && sel->right) {
551 sel=sel->right;
552 if(sel == next) {
553 curr = next;
554 calcoffsets();
555 }
556 }
557 else
558 return;
559 break;
560 case XK_Tab:
561 if(!sel)
562 return;
563 strncpy(text, sel->text, sizeof text);
564 cursor = strlen(text);
565 match(text);
566 break;
567 }
568 len = strlen(text);
569 cursor = MIN(cursor, len);
570 cursor = MAX(cursor, 0);
571 drawmenu();
572 }
573
574 void
575 match(char *pattern) {
576 unsigned int plen;
577 Item *i, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
578
579 if(!pattern)
580 return;
581 plen = strlen(pattern);
582 item = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
583 for(i = allitems; i; i = i->next)
584 if(!fstrncmp(pattern, i->text, plen + 1))
585 appenditem(i, &lexact, &exactend);
586 else if(!fstrncmp(pattern, i->text, plen))
587 appenditem(i, &lprefix, &prefixend);
588 else if(fstrstr(i->text, pattern))
589 appenditem(i, &lsubstr, &substrend);
590 if(lexact) {
591 item = lexact;
592 itemend = exactend;
593 }
594 if(lprefix) {
595 if(itemend) {
596 itemend->right = lprefix;
597 lprefix->left = itemend;
598 }
599 else
600 item = lprefix;
601 itemend = prefixend;
602 }
603 if(lsubstr) {
604 if(itemend) {
605 itemend->right = lsubstr;
606 lsubstr->left = itemend;
607 }
608 else
609 item = lsubstr;
610 }
611 curr = prev = next = sel = item;
612 calcoffsets();
613 }
614
615 void
616 readstdin(void) {
617 char *p, buf[1024];
618 unsigned int len = 0, max = 0;
619 Item *i, *new;
620
621 i = 0;
622 while(fgets(buf, sizeof buf, stdin)) {
623 len = strlen(buf);
624 if (buf[len - 1] == '\n')
625 buf[len - 1] = 0;
626 if(!(p = strdup(buf)))
627 eprint("fatal: could not strdup() %u bytes\n", strlen(buf));
628 if(max < len) {
629 maxname = p;
630 max = len;
631 }
632 if(!(new = (Item *)malloc(sizeof(Item))))
633 eprint("fatal: could not malloc() %u bytes\n", sizeof(Item));
634 new->next = new->left = new->right = NULL;
635 new->text = p;
636 if(!i)
637 allitems = new;
638 else
639 i->next = new;
640 i = new;
641 }
642 }
643
644 void
645 run(void) {
646 XEvent ev;
647
648 /* main event loop */
649 while(running && !XNextEvent(dpy, &ev))
650 switch (ev.type) {
651 default: /* ignore all crap */
652 break;
653 case KeyPress:
654 kpress(&ev.xkey);
655 break;
656 case Expose:
657 if(ev.xexpose.count == 0)
658 drawmenu();
659 break;
660 }
661 }
662
663 void
664 setup(Bool topbar) {
665 int i, j, x, y;
666 #if XINERAMA
667 int n;
668 XineramaScreenInfo *info = NULL;
669 #endif
670 XModifierKeymap *modmap;
671 XSetWindowAttributes wa;
672
673 /* init modifier map */
674 modmap = XGetModifierMapping(dpy);
675 for(i = 0; i < 8; i++)
676 for(j = 0; j < modmap->max_keypermod; j++) {
677 if(modmap->modifiermap[i * modmap->max_keypermod + j]
678 == XKeysymToKeycode(dpy, XK_Num_Lock))
679 numlockmask = (1 << i);
680 }
681 XFreeModifiermap(modmap);
682
683 /* style */
684 dc.norm[ColBG] = getcolor(normbgcolor);
685 dc.norm[ColFG] = getcolor(normfgcolor);
686 dc.sel[ColBG] = getcolor(selbgcolor);
687 dc.sel[ColFG] = getcolor(selfgcolor);
688 initfont(font);
689
690 /* menu window */
691 wa.override_redirect = True;
692 wa.background_pixmap = ParentRelative;
693 wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask;
694
695 /* menu window geometry */
696 mh = dc.font.height + 2;
697 mh = vlist ? mh * (lines+1) : mh;
698 #if XINERAMA
699 if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
700 i = 0;
701 if(n > 1) {
702 int di;
703 unsigned int dui;
704 Window dummy;
705 if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
706 for(i = 0; i < n; i++)
707 if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
708 break;
709 }
710 x = info[i].x_org;
711 y = topbar ? info[i].y_org : info[i].y_org + info[i].height - mh;
712 mw = info[i].width;
713 XFree(info);
714 }
715 else
716 #endif
717 {
718 x = 0;
719 y = topbar ? 0 : DisplayHeight(dpy, screen) - mh;
720 mw = DisplayWidth(dpy, screen);
721 }
722
723 win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
724 DefaultDepth(dpy, screen), CopyFromParent,
725 DefaultVisual(dpy, screen),
726 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
727
728 /* pixmap */
729 dc.drawable = XCreatePixmap(dpy, root, mw, mh, DefaultDepth(dpy, screen));
730 dc.gc = XCreateGC(dpy, root, 0, NULL);
731 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
732 if(!dc.font.set)
733 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
734 if(maxname)
735 cmdw = textw(maxname);
736 if(cmdw > mw / 3)
737 cmdw = mw / 3;
738 if(prompt)
739 promptw = textw(prompt);
740 if(promptw > mw / 5)
741 promptw = mw / 5;
742 text[0] = 0;
743 match(text);
744 XMapRaised(dpy, win);
745 }
746
747 int
748 textnw(const char *text, unsigned int len) {
749 XRectangle r;
750
751 if(dc.font.set) {
752 XmbTextExtents(dc.font.set, text, len, NULL, &r);
753 return r.width;
754 }
755 return XTextWidth(dc.font.xfont, text, len);
756 }
757
758 int
759 textw(const char *text) {
760 return textnw(text, strlen(text)) + dc.font.height;
761 }
762
763 int
764 main(int argc, char *argv[]) {
765 unsigned int i;
766 Bool topbar = True;
767
768 /* command line args */
769 for(i = 1; i < argc; i++)
770 if(!strcmp(argv[i], "-i")) {
771 fstrncmp = strncasecmp;
772 fstrstr = cistrstr;
773 }
774 else if(!strcmp(argv[i], "-b"))
775 topbar = False;
776 else if(!strcmp(argv[i], "-l")) {
777 vlist = True;
778 calcoffsets = calcoffsetsv;
779 if(++i < argc) lines = atoi(argv[i]);
780 }
781 else if(!strcmp(argv[i], "-fn")) {
782 if(++i < argc) font = argv[i];
783 }
784 else if(!strcmp(argv[i], "-nb")) {
785 if(++i < argc) normbgcolor = argv[i];
786 }
787 else if(!strcmp(argv[i], "-nf")) {
788 if(++i < argc) normfgcolor = argv[i];
789 }
790 else if(!strcmp(argv[i], "-p")) {
791 if(++i < argc) prompt = argv[i];
792 }
793 else if(!strcmp(argv[i], "-sb")) {
794 if(++i < argc) selbgcolor = argv[i];
795 }
796 else if(!strcmp(argv[i], "-sf")) {
797 if(++i < argc) selfgcolor = argv[i];
798 }
799 else if(!strcmp(argv[i], "-v"))
800 eprint("dmenu-"VERSION", © 2006-2009 dmenu engineers, see LICENSE for details\n");
801 else
802 eprint("usage: dmenu [-i] [-b] [-l <lines>] [-fn <font>] [-nb <color>] [-nf <color>]\n"
803 " [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
804 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
805 fprintf(stderr, "warning: no locale support\n");
806 if(!(dpy = XOpenDisplay(NULL)))
807 eprint("dmenu: cannot open display\n");
808 screen = DefaultScreen(dpy);
809 root = RootWindow(dpy, screen);
810
811 if(isatty(STDIN_FILENO)) {
812 readstdin();
813 running = grabkeyboard();
814 }
815 else { /* prevent keypress loss */
816 running = grabkeyboard();
817 readstdin();
818 }
819
820 setup(topbar);
821 drawmenu();
822 XSync(dpy, False);
823 run();
824 cleanup();
825 XCloseDisplay(dpy);
826 return ret;
827 }