dmenu.c - dmenu - Dmenu fork with xft fonts.
(HTM) git clone git://r-36.net/dmenu
(DIR) Log
(DIR) Files
(DIR) Refs
(DIR) README
(DIR) LICENSE
---
dmenu.c (16967B)
---
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
10 #include <X11/Xlib.h>
11 #include <X11/Xatom.h>
12 #include <X11/Xutil.h>
13 #ifdef XINERAMA
14 #include <X11/extensions/Xinerama.h>
15 #endif
16 #include <X11/Xft/Xft.h>
17
18 #include "drw.h"
19 #include "util.h"
20
21 /* macros */
22 #define INTERSECT(x,y,w,h,r) (MAX(0, MIN((x)+(w),(r).x_org+(r).width) - MAX((x),(r).x_org)) \
23 * MAX(0, MIN((y)+(h),(r).y_org+(r).height) - MAX((y),(r).y_org)))
24 #define LENGTH(X) (sizeof X / sizeof X[0])
25 #define TEXTNW(X,N) (drw_font_getexts_width(drw->fonts[0], (X), (N)))
26 #define TEXTW(X) (drw_text(drw, 0, 0, 0, 0, (X), 0) + drw->fonts[0]->h)
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 int bh, mw, mh;
39 static int sw, sh; /* X display screen geometry width, height */
40 static int inputw, promptw;
41 static size_t cursor;
42 static struct item *items = NULL;
43 static struct item *matches, *matchend;
44 static struct item *prev, *curr, *next, *sel;
45 static int mon = -1, screen;
46
47 static Atom clip, utf8;
48 static Display *dpy;
49 static Window root, win;
50 static XIC xic;
51
52 static ClrScheme scheme[SchemeLast];
53 static Drw *drw;
54
55 #include "config.h"
56
57 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
58 static char *(*fstrstr)(const char *, const char *) = strstr;
59
60 static void
61 appenditem(struct item *item, struct item **list, struct item **last)
62 {
63 if (*last)
64 (*last)->right = item;
65 else
66 *list = item;
67
68 item->left = *last;
69 item->right = NULL;
70 *last = item;
71 }
72
73 static void
74 calcoffsets(void)
75 {
76 int i, n;
77
78 if (lines > 0)
79 n = lines * bh;
80 else
81 n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
82 /* calculate which items will begin the next page and previous page */
83 for (i = 0, next = curr; next; next = next->right)
84 if ((i += (lines > 0) ? bh : MIN(TEXTW(next->text), n)) > n)
85 break;
86 for (i = 0, prev = curr; prev && prev->left; prev = prev->left)
87 if ((i += (lines > 0) ? bh : MIN(TEXTW(prev->left->text), n)) > n)
88 break;
89 }
90
91 static void
92 cleanup(void)
93 {
94 size_t i;
95
96 XUngrabKey(dpy, AnyKey, AnyModifier, root);
97 for (i = 0; i < SchemeLast; i++) {
98 drw_clr_free(scheme[i].bg);
99 drw_clr_free(scheme[i].fg);
100 }
101 drw_free(drw);
102 XSync(dpy, False);
103 XCloseDisplay(dpy);
104 }
105
106 static char *
107 cistrstr(const char *s, const char *sub)
108 {
109 size_t len;
110
111 for (len = strlen(sub); *s; s++)
112 if (!strncasecmp(s, sub, len))
113 return (char *)s;
114 return NULL;
115 }
116
117 static void
118 drawmenu(void)
119 {
120 int curpos;
121 struct item *item;
122 int x = 0, y = 0, h = bh, w;
123
124 drw_setscheme(drw, &scheme[SchemeNorm]);
125 drw_rect(drw, 0, 0, mw, mh, 1, 1, 1);
126
127 if (prompt && *prompt) {
128 drw_setscheme(drw, &scheme[SchemeSel]);
129 drw_text(drw, x, 0, promptw, bh, prompt, 0);
130 x += promptw;
131 }
132 /* draw input field */
133 w = (lines > 0 || !matches) ? mw - x : inputw;
134 drw_setscheme(drw, &scheme[SchemeNorm]);
135 drw_text(drw, x, 0, w, bh, text, 0);
136
137 if ((curpos = TEXTNW(text, cursor) + bh / 2 - 2) < w) {
138 drw_setscheme(drw, &scheme[SchemeNorm]);
139 drw_rect(drw, x + curpos + 2, 2, 1, bh - 4, 1, 1, 0);
140 }
141
142 if (lines > 0) {
143 /* draw vertical list */
144 w = mw - x;
145 for (item = curr; item != next; item = item->right) {
146 y += h;
147 if (item == sel)
148 drw_setscheme(drw, &scheme[SchemeSel]);
149 else if (item->out)
150 drw_setscheme(drw, &scheme[SchemeOut]);
151 else
152 drw_setscheme(drw, &scheme[SchemeNorm]);
153
154 drw_text(drw, x, y, w, bh, item->text, 0);
155 }
156 } else if (matches) {
157 /* draw horizontal list */
158 x += inputw;
159 w = TEXTW("<");
160 if (curr->left) {
161 drw_setscheme(drw, &scheme[SchemeNorm]);
162 drw_text(drw, x, 0, w, bh, "<", 0);
163 }
164 for (item = curr; item != next; item = item->right) {
165 x += w;
166 w = MIN(TEXTW(item->text), mw - x - TEXTW(">"));
167
168 if (item == sel)
169 drw_setscheme(drw, &scheme[SchemeSel]);
170 else if (item->out)
171 drw_setscheme(drw, &scheme[SchemeOut]);
172 else
173 drw_setscheme(drw, &scheme[SchemeNorm]);
174 drw_text(drw, x, 0, w, bh, item->text, 0);
175 }
176 w = TEXTW(">");
177 x = mw - w;
178 if (next) {
179 drw_setscheme(drw, &scheme[SchemeNorm]);
180 drw_text(drw, x, 0, w, bh, ">", 0);
181 }
182 }
183 drw_map(drw, win, 0, 0, mw, mh);
184 }
185
186 static void
187 grabkeyboard(void)
188 {
189 struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000 };
190 int i;
191
192 /* try to grab keyboard, we may have to wait for another process to ungrab */
193 for (i = 0; i < 1000; i++) {
194 if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True,
195 GrabModeAsync, GrabModeAsync, CurrentTime) == GrabSuccess)
196 return;
197 nanosleep(&ts, NULL);
198 }
199 die("cannot grab keyboard\n");
200 }
201
202 static void
203 match(void)
204 {
205 static char **tokv = NULL;
206 static int tokn = 0;
207
208 char buf[sizeof text], *s;
209 int i, tokc = 0;
210 size_t len, textsize;
211 struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
212
213 strcpy(buf, text);
214 /* separate input text into tokens to be matched individually */
215 for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
216 if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
217 die("cannot realloc %u bytes\n", tokn * sizeof *tokv);
218 len = tokc ? strlen(tokv[0]) : 0;
219
220 matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
221 textsize = strlen(text);
222 for (item = items; item && item->text; item++) {
223 for (i = 0; i < tokc; i++)
224 if (!fstrstr(item->text, tokv[i]))
225 break;
226 if (i != tokc) /* not all tokens match */
227 continue;
228 /* exact matches go first, then prefixes, then substrings */
229 if (!tokc || !fstrncmp(text, item->text, textsize))
230 appenditem(item, &matches, &matchend);
231 else if (!fstrncmp(tokv[0], item->text, len))
232 appenditem(item, &lprefix, &prefixend);
233 else
234 appenditem(item, &lsubstr, &substrend);
235 }
236 if (lprefix) {
237 if (matches) {
238 matchend->right = lprefix;
239 lprefix->left = matchend;
240 } else
241 matches = lprefix;
242 matchend = prefixend;
243 }
244 if (lsubstr) {
245 if (matches) {
246 matchend->right = lsubstr;
247 lsubstr->left = matchend;
248 } else
249 matches = lsubstr;
250 matchend = substrend;
251 }
252 curr = sel = matches;
253 calcoffsets();
254 }
255
256 static void
257 insert(const char *str, ssize_t n)
258 {
259 if (strlen(text) + n > sizeof text - 1)
260 return;
261 /* move existing text out of the way, insert new text, and update cursor */
262 memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
263 if (n > 0)
264 memcpy(&text[cursor], str, n);
265 cursor += n;
266 match();
267 }
268
269 static size_t
270 nextrune(int inc)
271 {
272 ssize_t n;
273
274 /* return location of next utf8 rune in the given direction (+1 or -1) */
275 for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
276 ;
277 return n;
278 }
279
280 static void
281 keypress(XKeyEvent *ev)
282 {
283 char buf[32];
284 int len;
285 KeySym ksym = NoSymbol;
286 Status status;
287
288 len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
289 if (status == XBufferOverflow)
290 return;
291 if (ev->state & ControlMask)
292 switch(ksym) {
293 case XK_a: ksym = XK_Home; break;
294 case XK_b: ksym = XK_Left; break;
295 case XK_c: ksym = XK_Escape; break;
296 case XK_d: ksym = XK_Delete; break;
297 case XK_e: ksym = XK_End; break;
298 case XK_f: ksym = XK_Right; break;
299 case XK_g: ksym = XK_Escape; break;
300 case XK_h: ksym = XK_BackSpace; break;
301 case XK_i: ksym = XK_Tab; break;
302 case XK_j: /* fallthrough */
303 case XK_J: /* fallthrough */
304 case XK_m: /* fallthrough */
305 case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
306 case XK_n: ksym = XK_Down; break;
307 case XK_p: ksym = XK_Up; break;
308
309 case XK_k: /* delete right */
310 text[cursor] = '\0';
311 match();
312 break;
313 case XK_u: /* delete left */
314 insert(NULL, 0 - cursor);
315 break;
316 case XK_w: /* delete word */
317 while (cursor > 0 && strchr(worddelimiters,
318 text[nextrune(-1)]))
319 insert(NULL, nextrune(-1) - cursor);
320 while (cursor > 0 && !strchr(worddelimiters,
321 text[nextrune(-1)]))
322 insert(NULL, nextrune(-1) - cursor);
323 break;
324 case XK_y: /* paste selection */
325 case XK_Y:
326 XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
327 utf8, utf8, win, CurrentTime);
328 return;
329 case XK_Return:
330 case XK_KP_Enter:
331 break;
332 case XK_bracketleft:
333 cleanup();
334 exit(1);
335 default:
336 return;
337 }
338 else if (ev->state & Mod1Mask)
339 switch(ksym) {
340 case XK_g: ksym = XK_Home; break;
341 case XK_G: ksym = XK_End; break;
342 case XK_h: ksym = XK_Up; break;
343 case XK_j: ksym = XK_Next; break;
344 case XK_k: ksym = XK_Prior; break;
345 case XK_l: ksym = XK_Down; break;
346 default:
347 return;
348 }
349 switch(ksym) {
350 default:
351 if (!iscntrl(*buf))
352 insert(buf, len);
353 break;
354 case XK_Delete:
355 if (text[cursor] == '\0')
356 return;
357 cursor = nextrune(+1);
358 /* fallthrough */
359 case XK_BackSpace:
360 if (cursor == 0)
361 return;
362 insert(NULL, nextrune(-1) - cursor);
363 break;
364 case XK_End:
365 if (text[cursor] != '\0') {
366 cursor = strlen(text);
367 break;
368 }
369 if (next) {
370 /* jump to end of list and position items in reverse */
371 curr = matchend;
372 calcoffsets();
373 curr = prev;
374 calcoffsets();
375 while (next && (curr = curr->right))
376 calcoffsets();
377 }
378 sel = matchend;
379 break;
380 case XK_Escape:
381 cleanup();
382 exit(1);
383 case XK_Home:
384 if (sel == matches) {
385 cursor = 0;
386 break;
387 }
388 sel = curr = matches;
389 calcoffsets();
390 break;
391 case XK_Left:
392 if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
393 cursor = nextrune(-1);
394 break;
395 }
396 if (lines > 0)
397 return;
398 /* fallthrough */
399 case XK_Up:
400 if (sel && sel->left && (sel = sel->left)->right == curr) {
401 curr = prev;
402 calcoffsets();
403 }
404 break;
405 case XK_Next:
406 if (!next)
407 return;
408 sel = curr = next;
409 calcoffsets();
410 break;
411 case XK_Prior:
412 if (!prev)
413 return;
414 sel = curr = prev;
415 calcoffsets();
416 break;
417 case XK_Return:
418 case XK_KP_Enter:
419 puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
420 if (!(ev->state & ControlMask)) {
421 cleanup();
422 exit(0);
423 }
424 if (sel)
425 sel->out = 1;
426 break;
427 case XK_Right:
428 if (text[cursor] != '\0') {
429 cursor = nextrune(+1);
430 break;
431 }
432 if (lines > 0)
433 return;
434 /* fallthrough */
435 case XK_Down:
436 if (sel && sel->right && (sel = sel->right) == next) {
437 curr = next;
438 calcoffsets();
439 }
440 break;
441 case XK_Tab:
442 if (!sel)
443 return;
444 strncpy(text, sel->text, sizeof text - 1);
445 text[sizeof text - 1] = '\0';
446 cursor = strlen(text);
447 match();
448 break;
449 }
450 drawmenu();
451 }
452
453 static void
454 paste(void)
455 {
456 char *p, *q;
457 int di;
458 unsigned long dl;
459 Atom da;
460
461 /* we have been given the current selection, now insert it into input */
462 XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
463 utf8, &da, &di, &dl, &dl, (unsigned char **)&p);
464 insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
465 XFree(p);
466 drawmenu();
467 }
468
469 static void
470 readstdin(void)
471 {
472 char buf[sizeof text], *p, *maxstr = NULL;
473 size_t i, max = 0, size = 0;
474
475 /* read each line from stdin and add it to the item list */
476 for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
477 if (i + 1 >= size / sizeof *items)
478 if (!(items = realloc(items, (size += BUFSIZ))))
479 die("cannot realloc %u bytes:", size);
480 if ((p = strchr(buf, '\n')))
481 *p = '\0';
482 if (!(items[i].text = strdup(buf)))
483 die("cannot strdup %u bytes:", strlen(buf) + 1);
484 items[i].out = 0;
485 if (strlen(items[i].text) > max)
486 max = strlen(maxstr = items[i].text);
487 }
488 if (items)
489 items[i].text = NULL;
490 inputw = maxstr ? TEXTW(maxstr) : 0;
491 lines = MIN(lines, i);
492 }
493
494 static void
495 run(void)
496 {
497 XEvent ev;
498
499 while (!XNextEvent(dpy, &ev)) {
500 if (XFilterEvent(&ev, win))
501 continue;
502 switch(ev.type) {
503 case Expose:
504 if (ev.xexpose.count == 0)
505 drw_map(drw, win, 0, 0, mw, mh);
506 break;
507 case KeyPress:
508 keypress(&ev.xkey);
509 break;
510 case SelectionNotify:
511 if (ev.xselection.property == utf8)
512 paste();
513 break;
514 case VisibilityNotify:
515 if (ev.xvisibility.state != VisibilityUnobscured)
516 XRaiseWindow(dpy, win);
517 break;
518 }
519 }
520 }
521
522 static void
523 setup(void)
524 {
525 int x, y;
526 XSetWindowAttributes swa;
527 XIM xim;
528 #ifdef XINERAMA
529 XineramaScreenInfo *info;
530 Window w, pw, dw, *dws;
531 XWindowAttributes wa;
532 int a, j, di, n, i = 0, area = 0;
533 unsigned int du;
534 #endif
535
536 /* init appearance */
537 scheme[SchemeNorm].bg = drw_clr_create(drw, normbgcolor);
538 scheme[SchemeNorm].fg = drw_clr_create(drw, normfgcolor);
539 scheme[SchemeSel].bg = drw_clr_create(drw, selbgcolor);
540 scheme[SchemeSel].fg = drw_clr_create(drw, selfgcolor);
541 scheme[SchemeOut].bg = drw_clr_create(drw, outbgcolor);
542 scheme[SchemeOut].fg = drw_clr_create(drw, outfgcolor);
543
544 clip = XInternAtom(dpy, "CLIPBOARD", False);
545 utf8 = XInternAtom(dpy, "UTF8_STRING", False);
546
547 /* calculate menu geometry */
548 bh = drw->fonts[0]->h + 2;
549 lines = MAX(lines, 0);
550 mh = (lines + 1) * bh;
551 #ifdef XINERAMA
552 if ((info = XineramaQueryScreens(dpy, &n))) {
553 XGetInputFocus(dpy, &w, &di);
554 if (mon != -1 && mon < n)
555 i = mon;
556 else if (w != root && w != PointerRoot && w != None) {
557 /* find top-level window containing current input focus */
558 do {
559 if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
560 XFree(dws);
561 } while (w != root && w != pw);
562 /* find xinerama screen with which the window intersects most */
563 if (XGetWindowAttributes(dpy, pw, &wa))
564 for (j = 0; j < n; j++)
565 if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
566 area = a;
567 i = j;
568 }
569 }
570 /* no focused window is on screen, so use pointer location instead */
571 if (mon == -1 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
572 for (i = 0; i < n; i++)
573 if (INTERSECT(x, y, 1, 1, info[i]))
574 break;
575
576 x = info[i].x_org;
577 y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
578 mw = info[i].width;
579 XFree(info);
580 } else
581 #endif
582 {
583 x = 0;
584 y = topbar ? 0 : sh - mh;
585 mw = sw;
586 }
587 promptw = (prompt && *prompt) ? TEXTW(prompt) : 0;
588 inputw = MIN(inputw, mw/3);
589 match();
590
591 /* create menu window */
592 swa.override_redirect = True;
593 swa.background_pixel = scheme[SchemeNorm].bg->pix;
594 swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
595 win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
596 DefaultDepth(dpy, screen), CopyFromParent,
597 DefaultVisual(dpy, screen),
598 CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
599
600 /* open input methods */
601 xim = XOpenIM(dpy, NULL, NULL, NULL);
602 xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
603 XNClientWindow, win, XNFocusWindow, win, NULL);
604
605 XMapRaised(dpy, win);
606 drw_resize(drw, mw, mh);
607 drawmenu();
608 }
609
610 static void
611 usage(void)
612 {
613 fputs("usage: dmenu [-b] [-f] [-i] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
614 " [-nb color] [-nf color] [-sb color] [-sf color] [-v]\n", stderr);
615 exit(1);
616 }
617
618 int
619 main(int argc, char *argv[])
620 {
621 int i, fast = 0;
622
623 for (i = 1; i < argc; i++)
624 /* these options take no arguments */
625 if (!strcmp(argv[i], "-v")) { /* prints version information */
626 puts("dmenu-"VERSION);
627 exit(0);
628 } else if (!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
629 topbar = 0;
630 else if (!strcmp(argv[i], "-f")) /* grabs keyboard before reading stdin */
631 fast = 1;
632 else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
633 fstrncmp = strncasecmp;
634 fstrstr = cistrstr;
635 } else if (i + 1 == argc)
636 usage();
637 /* these options take one argument */
638 else if (!strcmp(argv[i], "-l")) /* number of lines in vertical list */
639 lines = atoi(argv[++i]);
640 else if (!strcmp(argv[i], "-m"))
641 mon = atoi(argv[++i]);
642 else if (!strcmp(argv[i], "-p")) /* adds prompt to left of input field */
643 prompt = argv[++i];
644 else if (!strcmp(argv[i], "-fn")) /* font or font set */
645 fonts[0] = argv[++i];
646 else if (!strcmp(argv[i], "-nb")) /* normal background color */
647 normbgcolor = argv[++i];
648 else if (!strcmp(argv[i], "-nf")) /* normal foreground color */
649 normfgcolor = argv[++i];
650 else if (!strcmp(argv[i], "-sb")) /* selected background color */
651 selbgcolor = argv[++i];
652 else if (!strcmp(argv[i], "-sf")) /* selected foreground color */
653 selfgcolor = argv[++i];
654 else
655 usage();
656
657 if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
658 fputs("warning: no locale support\n", stderr);
659 if (!(dpy = XOpenDisplay(NULL)))
660 die("cannot open display\n");
661 screen = DefaultScreen(dpy);
662 root = RootWindow(dpy, screen);
663 sw = DisplayWidth(dpy, screen);
664 sh = DisplayHeight(dpy, screen);
665 drw = drw_create(dpy, screen, root, sw, sh);
666 drw_load_fonts(drw, fonts, LENGTH(fonts));
667 if (!drw->fontcount)
668 die("no fonts could be loaded.\n");
669 drw_setscheme(drw, &scheme[SchemeNorm]);
670
671 if (fast) {
672 grabkeyboard();
673 readstdin();
674 } else {
675 readstdin();
676 grabkeyboard();
677 }
678 setup();
679 run();
680
681 return 1; /* unreachable */
682 }