dmenu for lunch applications in dwm
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  1. /* See LICENSE file for copyright and license details. */
  2. #include <ctype.h>
  3. #include <stdio.h>
  4. #include <stdlib.h>
  5. #include <string.h>
  6. #include <unistd.h>
  7. #include <X11/Xlib.h>
  8. #include <X11/Xatom.h>
  9. #include <X11/Xutil.h>
  10. #ifdef XINERAMA
  11. #include <X11/extensions/Xinerama.h>
  12. #endif
  13. #include "draw.h"
  14. #define INRECT(x,y,rx,ry,rw,rh) ((x) >= (rx) && (x) < (rx)+(rw) && (y) >= (ry) && (y) < (ry)+(rh))
  15. #define MIN(a,b) ((a) < (b) ? (a) : (b))
  16. #define MAX(a,b) ((a) > (b) ? (a) : (b))
  17. typedef struct Item Item;
  18. struct Item {
  19. char *text;
  20. Item *next; /* traverses all items */
  21. Item *left, *right; /* traverses matching items */
  22. };
  23. static void appenditem(Item *item, Item **list, Item **last);
  24. static void calcoffsets(void);
  25. static void drawmenu(void);
  26. static char *fstrstr(const char *s, const char *sub);
  27. static void grabkeyboard(void);
  28. static void insert(const char *s, ssize_t n);
  29. static void keypress(XKeyEvent *ev);
  30. static void match(void);
  31. static size_t nextrune(int incr);
  32. static void paste(void);
  33. static void readstdin(void);
  34. static void run(void);
  35. static void setup(void);
  36. static void usage(void);
  37. static char text[BUFSIZ];
  38. static int bh, mw, mh;
  39. static int inputw = 0;
  40. static int lines = 0;
  41. static int monitor = -1;
  42. static int promptw;
  43. static size_t cursor = 0;
  44. static const char *font = NULL;
  45. static const char *prompt = NULL;
  46. static const char *normbgcolor = "#cccccc";
  47. static const char *normfgcolor = "#000000";
  48. static const char *selbgcolor = "#0066ff";
  49. static const char *selfgcolor = "#ffffff";
  50. static unsigned long normcol[ColLast];
  51. static unsigned long selcol[ColLast];
  52. static Atom utf8;
  53. static Bool topbar = True;
  54. static DC *dc;
  55. static Item *items = NULL;
  56. static Item *matches, *sel;
  57. static Item *prev, *curr, *next;
  58. static Window root, win;
  59. static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
  60. int
  61. main(int argc, char *argv[]) {
  62. int i;
  63. progname = "dmenu";
  64. for(i = 1; i < argc; i++)
  65. /* single flags */
  66. if(!strcmp(argv[i], "-v")) {
  67. fputs("dmenu-"VERSION", © 2006-2010 dmenu engineers, see LICENSE for details\n", stdout);
  68. exit(EXIT_SUCCESS);
  69. }
  70. else if(!strcmp(argv[i], "-b"))
  71. topbar = False;
  72. else if(!strcmp(argv[i], "-i"))
  73. fstrncmp = strncasecmp;
  74. else if(i == argc-1)
  75. usage();
  76. /* double flags */
  77. else if(!strcmp(argv[i], "-l"))
  78. lines = atoi(argv[++i]);
  79. else if(!strcmp(argv[i], "-m"))
  80. monitor = atoi(argv[++i]);
  81. else if(!strcmp(argv[i], "-p"))
  82. prompt = argv[++i];
  83. else if(!strcmp(argv[i], "-fn"))
  84. font = argv[++i];
  85. else if(!strcmp(argv[i], "-nb"))
  86. normbgcolor = argv[++i];
  87. else if(!strcmp(argv[i], "-nf"))
  88. normfgcolor = argv[++i];
  89. else if(!strcmp(argv[i], "-sb"))
  90. selbgcolor = argv[++i];
  91. else if(!strcmp(argv[i], "-sf"))
  92. selfgcolor = argv[++i];
  93. else
  94. usage();
  95. dc = initdc();
  96. initfont(dc, font);
  97. readstdin();
  98. setup();
  99. run();
  100. return EXIT_FAILURE; /* should not reach */
  101. }
  102. void
  103. appenditem(Item *item, Item **list, Item **last) {
  104. if(!*last)
  105. *list = item;
  106. else
  107. (*last)->right = item;
  108. item->left = *last;
  109. item->right = NULL;
  110. *last = item;
  111. }
  112. void
  113. calcoffsets(void) {
  114. unsigned int i, n;
  115. if(lines > 0)
  116. n = lines * bh;
  117. else
  118. n = mw - (promptw + inputw + textw(dc, "<") + textw(dc, ">"));
  119. for(i = 0, next = curr; next; next = next->right)
  120. if((i += (lines > 0) ? bh : MIN(textw(dc, next->text), n)) > n)
  121. break;
  122. for(i = 0, prev = curr; prev && prev->left; prev = prev->left)
  123. if((i += (lines > 0) ? bh : MIN(textw(dc, prev->left->text), n)) > n)
  124. break;
  125. }
  126. void
  127. drawmenu(void) {
  128. int curpos;
  129. Item *item;
  130. dc->x = 0;
  131. dc->y = 0;
  132. dc->h = bh;
  133. drawrect(dc, 0, 0, mw, mh, True, BG(dc, normcol));
  134. if(prompt) {
  135. dc->w = promptw;
  136. drawtext(dc, prompt, selcol);
  137. dc->x = dc->w;
  138. }
  139. dc->w = (lines > 0 || !matches) ? mw - dc->x : inputw;
  140. drawtext(dc, text, normcol);
  141. if((curpos = textnw(dc, text, cursor) + dc->h/2 - 2) < dc->w)
  142. drawrect(dc, curpos, 2, 1, dc->h - 4, True, FG(dc, normcol));
  143. if(lines > 0) {
  144. dc->w = mw - dc->x;
  145. for(item = curr; item != next; item = item->right) {
  146. dc->y += dc->h;
  147. drawtext(dc, item->text, (item == sel) ? selcol : normcol);
  148. }
  149. }
  150. else if(matches) {
  151. dc->x += inputw;
  152. dc->w = textw(dc, "<");
  153. if(curr->left)
  154. drawtext(dc, "<", normcol);
  155. for(item = curr; item != next; item = item->right) {
  156. dc->x += dc->w;
  157. dc->w = MIN(textw(dc, item->text), mw - dc->x - textw(dc, ">"));
  158. drawtext(dc, item->text, (item == sel) ? selcol : normcol);
  159. }
  160. dc->w = textw(dc, ">");
  161. dc->x = mw - dc->w;
  162. if(next)
  163. drawtext(dc, ">", normcol);
  164. }
  165. mapdc(dc, win, mw, mh);
  166. }
  167. char *
  168. fstrstr(const char *s, const char *sub) {
  169. size_t len;
  170. for(len = strlen(sub); *s; s++)
  171. if(!fstrncmp(s, sub, len))
  172. return (char *)s;
  173. return NULL;
  174. }
  175. void
  176. grabkeyboard(void) {
  177. int i;
  178. for(i = 0; i < 1000; i++) {
  179. if(!XGrabKeyboard(dc->dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime))
  180. return;
  181. usleep(1000);
  182. }
  183. eprintf("cannot grab keyboard\n");
  184. }
  185. void
  186. insert(const char *s, ssize_t n) {
  187. if(strlen(text) + n > sizeof text - 1)
  188. return;
  189. memmove(text + cursor + n, text + cursor, sizeof text - cursor - MAX(n, 0));
  190. if(n > 0)
  191. memcpy(text + cursor, s, n);
  192. cursor += n;
  193. match();
  194. }
  195. void
  196. keypress(XKeyEvent *ev) {
  197. char buf[32];
  198. size_t len;
  199. KeySym ksym;
  200. len = strlen(text);
  201. XLookupString(ev, buf, sizeof buf, &ksym, NULL);
  202. if(ev->state & ControlMask) {
  203. switch(tolower(ksym)) {
  204. default:
  205. return;
  206. case XK_a:
  207. ksym = XK_Home;
  208. break;
  209. case XK_b:
  210. ksym = XK_Left;
  211. break;
  212. case XK_c:
  213. ksym = XK_Escape;
  214. break;
  215. case XK_d:
  216. ksym = XK_Delete;
  217. break;
  218. case XK_e:
  219. ksym = XK_End;
  220. break;
  221. case XK_f:
  222. ksym = XK_Right;
  223. break;
  224. case XK_h:
  225. ksym = XK_BackSpace;
  226. break;
  227. case XK_i:
  228. ksym = XK_Tab;
  229. break;
  230. case XK_j:
  231. ksym = XK_Return;
  232. break;
  233. case XK_k: /* delete right */
  234. text[cursor] = '\0';
  235. match();
  236. break;
  237. case XK_n:
  238. ksym = XK_Down;
  239. break;
  240. case XK_p:
  241. ksym = XK_Up;
  242. break;
  243. case XK_u: /* delete left */
  244. insert(NULL, 0 - cursor);
  245. break;
  246. case XK_w: /* delete word */
  247. while(cursor > 0 && text[nextrune(-1)] == ' ')
  248. insert(NULL, nextrune(-1) - cursor);
  249. while(cursor > 0 && text[nextrune(-1)] != ' ')
  250. insert(NULL, nextrune(-1) - cursor);
  251. break;
  252. case XK_y: /* paste selection */
  253. XConvertSelection(dc->dpy, XA_PRIMARY, utf8, utf8, win, CurrentTime);
  254. return;
  255. }
  256. }
  257. switch(ksym) {
  258. default:
  259. if(!iscntrl(*buf))
  260. insert(buf, strlen(buf));
  261. break;
  262. case XK_Delete:
  263. if(cursor == len)
  264. return;
  265. cursor = nextrune(+1);
  266. case XK_BackSpace:
  267. if(cursor > 0)
  268. insert(NULL, nextrune(-1) - cursor);
  269. break;
  270. case XK_End:
  271. if(cursor < len) {
  272. cursor = len;
  273. break;
  274. }
  275. while(next) {
  276. sel = curr = next;
  277. calcoffsets();
  278. }
  279. while(sel && sel->right)
  280. sel = sel->right;
  281. break;
  282. case XK_Escape:
  283. exit(EXIT_FAILURE);
  284. case XK_Home:
  285. if(sel == matches) {
  286. cursor = 0;
  287. break;
  288. }
  289. sel = curr = matches;
  290. calcoffsets();
  291. break;
  292. case XK_Left:
  293. if(cursor > 0 && (!sel || !sel->left || lines > 0)) {
  294. cursor = nextrune(-1);
  295. break;
  296. }
  297. else if(lines > 0)
  298. return;
  299. case XK_Up:
  300. if(sel && sel->left && (sel = sel->left)->right == curr) {
  301. curr = prev;
  302. calcoffsets();
  303. }
  304. break;
  305. case XK_Next:
  306. if(!next)
  307. return;
  308. sel = curr = next;
  309. calcoffsets();
  310. break;
  311. case XK_Prior:
  312. if(!prev)
  313. return;
  314. sel = curr = prev;
  315. calcoffsets();
  316. break;
  317. case XK_Return:
  318. case XK_KP_Enter:
  319. fputs((sel && !(ev->state & ShiftMask)) ? sel->text : text, stdout);
  320. fflush(stdout);
  321. exit(EXIT_SUCCESS);
  322. case XK_Right:
  323. if(cursor < len) {
  324. cursor = nextrune(+1);
  325. break;
  326. }
  327. else if(lines > 0)
  328. return;
  329. case XK_Down:
  330. if(sel && sel->right && (sel = sel->right) == next) {
  331. curr = next;
  332. calcoffsets();
  333. }
  334. break;
  335. case XK_Tab:
  336. if(!sel)
  337. return;
  338. strncpy(text, sel->text, sizeof text);
  339. cursor = strlen(text);
  340. match();
  341. break;
  342. }
  343. drawmenu();
  344. }
  345. void
  346. match(void) {
  347. size_t len;
  348. Item *item, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
  349. len = strlen(text);
  350. matches = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
  351. for(item = items; item; item = item->next)
  352. if(!fstrncmp(text, item->text, len + 1))
  353. appenditem(item, &lexact, &exactend);
  354. else if(!fstrncmp(text, item->text, len))
  355. appenditem(item, &lprefix, &prefixend);
  356. else if(fstrstr(item->text, text))
  357. appenditem(item, &lsubstr, &substrend);
  358. if(lexact) {
  359. matches = lexact;
  360. itemend = exactend;
  361. }
  362. if(lprefix) {
  363. if(itemend) {
  364. itemend->right = lprefix;
  365. lprefix->left = itemend;
  366. }
  367. else
  368. matches = lprefix;
  369. itemend = prefixend;
  370. }
  371. if(lsubstr) {
  372. if(itemend) {
  373. itemend->right = lsubstr;
  374. lsubstr->left = itemend;
  375. }
  376. else
  377. matches = lsubstr;
  378. }
  379. curr = prev = next = sel = matches;
  380. calcoffsets();
  381. }
  382. size_t
  383. nextrune(int incr) {
  384. size_t n, len;
  385. len = strlen(text);
  386. for(n = cursor + incr; n >= 0 && n < len && (text[n] & 0xc0) == 0x80; n += incr);
  387. return n;
  388. }
  389. void
  390. paste(void) {
  391. char *p, *q;
  392. int di;
  393. unsigned long dl;
  394. Atom da;
  395. XGetWindowProperty(dc->dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
  396. utf8, &da, &di, &dl, &dl, (unsigned char **)&p);
  397. insert(p, (q = strchr(p, '\n')) ? q-p : strlen(p));
  398. XFree(p);
  399. drawmenu();
  400. }
  401. void
  402. readstdin(void) {
  403. char buf[sizeof text], *p;
  404. Item *item, **end;
  405. for(end = &items; fgets(buf, sizeof buf, stdin); *end = item, end = &item->next) {
  406. if((p = strchr(buf, '\n')))
  407. *p = '\0';
  408. if(!(item = malloc(sizeof *item)))
  409. eprintf("cannot malloc %u bytes\n", sizeof *item);
  410. if(!(item->text = strdup(buf)))
  411. eprintf("cannot strdup %u bytes\n", strlen(buf)+1);
  412. item->next = item->left = item->right = NULL;
  413. inputw = MAX(inputw, textw(dc, item->text));
  414. }
  415. }
  416. void
  417. run(void) {
  418. XEvent ev;
  419. while(!XNextEvent(dc->dpy, &ev))
  420. switch(ev.type) {
  421. case Expose:
  422. if(ev.xexpose.count == 0)
  423. drawmenu();
  424. break;
  425. case KeyPress:
  426. keypress(&ev.xkey);
  427. break;
  428. case SelectionNotify:
  429. if(ev.xselection.property == utf8)
  430. paste();
  431. break;
  432. case VisibilityNotify:
  433. if(ev.xvisibility.state != VisibilityUnobscured)
  434. XRaiseWindow(dc->dpy, win);
  435. break;
  436. }
  437. }
  438. void
  439. setup(void) {
  440. int x, y, screen;
  441. XSetWindowAttributes wa;
  442. #ifdef XINERAMA
  443. int n;
  444. XineramaScreenInfo *info;
  445. #endif
  446. screen = DefaultScreen(dc->dpy);
  447. root = RootWindow(dc->dpy, screen);
  448. utf8 = XInternAtom(dc->dpy, "UTF8_STRING", False);
  449. normcol[ColBG] = getcolor(dc, normbgcolor);
  450. normcol[ColFG] = getcolor(dc, normfgcolor);
  451. selcol[ColBG] = getcolor(dc, selbgcolor);
  452. selcol[ColFG] = getcolor(dc, selfgcolor);
  453. /* menu geometry */
  454. bh = dc->font.height + 2;
  455. lines = MAX(lines, 0);
  456. mh = (lines + 1) * bh;
  457. #ifdef XINERAMA
  458. if((info = XineramaQueryScreens(dc->dpy, &n))) {
  459. int i, di;
  460. unsigned int du;
  461. Window dw;
  462. XQueryPointer(dc->dpy, root, &dw, &dw, &x, &y, &di, &di, &du);
  463. for(i = 0; i < n; i++)
  464. if((monitor == info[i].screen_number)
  465. || (monitor < 0 && INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height)))
  466. break;
  467. x = info[i].x_org;
  468. y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
  469. mw = info[i].width;
  470. XFree(info);
  471. }
  472. else
  473. #endif
  474. {
  475. x = 0;
  476. y = topbar ? 0 : DisplayHeight(dc->dpy, screen) - mh;
  477. mw = DisplayWidth(dc->dpy, screen);
  478. }
  479. /* menu window */
  480. wa.override_redirect = True;
  481. wa.background_pixmap = ParentRelative;
  482. wa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
  483. win = XCreateWindow(dc->dpy, root, x, y, mw, mh, 0,
  484. DefaultDepth(dc->dpy, screen), CopyFromParent,
  485. DefaultVisual(dc->dpy, screen),
  486. CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
  487. grabkeyboard();
  488. resizedc(dc, mw, mh);
  489. inputw = MIN(inputw, mw/3);
  490. promptw = prompt ? textw(dc, prompt) : 0;
  491. XMapRaised(dc->dpy, win);
  492. text[0] = '\0';
  493. match();
  494. }
  495. void
  496. usage(void) {
  497. fputs("usage: dmenu [-b] [-i] [-l lines] [-m monitor] [-p prompt] [-fn font]\n"
  498. " [-nb color] [-nf color] [-sb color] [-sf color] [-v]\n", stderr);
  499. exit(EXIT_FAILURE);
  500. }