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My dmenu build
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dmenu-rinri/dmenu.c

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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. 

  15. #define INRECT(x,y,rx,ry,rw,rh) ((x) >= (rx) && (x) < (rx)+(rw) && (y) >= (ry) && (y) < (ry)+(rh))

  16. #define LINEH                   (dc->font.height + 2)

  17. #define MIN(a,b)                ((a) < (b) ? (a) : (b))

  18. #define MAX(a,b)                ((a) > (b) ? (a) : (b))

  19. #define UTF8_CODEPOINT(c)       (((c) & 0xc0) != 0x80)

  20. 

  21. typedef struct Item Item;

  22. struct Item {

  23. 	char *text;

  24. 	Item *next;          /* traverses all items */

  25. 	Item *left, *right;  /* traverses matching items */

  26. };

  27. 

  28. static void appenditem(Item *item, Item **list, Item **last);

  29. static void calcoffsets(void);

  30. static char *cistrstr(const char *s, const char *sub);

  31. static void drawmenu(void);

  32. static void grabkeyboard(void);

  33. static void insert(const char *s, ssize_t n);

  34. static void keypress(XKeyEvent *ev);

  35. static void match(void);

  36. static void paste(void);

  37. static void readstdin(void);

  38. static void run(void);

  39. static void setup(void);

  40. static void usage(void);

  41. 

  42. static char text[BUFSIZ];

  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 int inputw = 0;

  51. static unsigned int lines = 0;

  52. static unsigned int mw, mh;

  53. static unsigned int promptw;

  54. static unsigned long normcol[ColLast];

  55. static unsigned long selcol[ColLast];

  56. static Atom utf8;

  57. static Bool topbar = True;

  58. static DC *dc;

  59. static Item *allitems, *matches;

  60. static Item *curr, *prev, *next, *sel;

  61. static Window root, win;

  62. 

  63. static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;

  64. static char *(*fstrstr)(const char *, const char *) = strstr;

  65. 

  66. void

  67. appenditem(Item *item, Item **list, Item **last) {

  68. 	if(!*last)

  69. 		*list = item;

  70. 	else

  71. 		(*last)->right = item;

  72. 	item->left = *last;

  73. 	item->right = NULL;

  74. 	*last = item;

  75. }

  76. 

  77. void

  78. calcoffsets(void) {

  79. 	unsigned int i, n;

  80. 

  81. 	if(lines > 0)

  82. 		n = lines * LINEH;

  83. 	else

  84. 		n = mw - (promptw + inputw + textw(dc, "<") + textw(dc, ">"));

  85. 

  86. 	for(i = 0, next = curr; next; next = next->right)

  87. 		if((i += (lines > 0) ? LINEH : MIN(textw(dc, next->text), mw/3)) > n)

  88. 			break;

  89. 	for(i = 0, prev = curr; prev && prev->left; prev = prev->left)

  90. 		if((i += (lines > 0) ? LINEH : MIN(textw(dc, prev->left->text), mw/3)) > n)

  91. 			break;

  92. }

  93. 

  94. char *

  95. cistrstr(const char *s, const char *sub) {

  96. 	size_t len;

  97. 

  98. 	for(len = strlen(sub); *s; s++)

  99. 		if(!strncasecmp(s, sub, len))

  100. 			return (char *)s;

  101. 	return NULL;

  102. }

  103. 

  104. void

  105. drawmenu(void) {

  106. 	int curpos;

  107. 	Item *item;

  108. 

  109. 	dc->x = 0;

  110. 	dc->y = 0;

  111. 	dc->h = LINEH;

  112. 	drawrect(dc, 0, 0, mw, mh, BG(dc, normcol));

  113. 

  114. 	if(prompt) {

  115. 		dc->w = promptw;

  116. 		drawtext(dc, prompt, selcol);

  117. 		dc->x = dc->w;

  118. 	}

  119. 	dc->w = (lines > 0 || !matches) ? mw - dc->x : inputw;

  120. 	drawtext(dc, text, normcol);

  121. 	if((curpos = textnw(dc, text, cursor) + dc->h/2 - 2) < dc->w)

  122. 		drawrect(dc, curpos, 2, 1, dc->h - 4, FG(dc, normcol));

  123. 

  124. 	if(lines > 0) {

  125. 		dc->w = mw - dc->x;

  126. 		for(item = curr; item != next; item = item->right) {

  127. 			dc->y += dc->h;

  128. 			drawtext(dc, item->text, (item == sel) ? selcol : normcol);

  129. 		}

  130. 	}

  131. 	else if(matches) {

  132. 		dc->x += inputw;

  133. 		dc->w = textw(dc, "<");

  134. 		if(curr->left)

  135. 			drawtext(dc, "<", normcol);

  136. 		for(item = curr; item != next; item = item->right) {

  137. 			dc->x += dc->w;

  138. 			dc->w = MIN(textw(dc, item->text), mw/3);

  139. 			drawtext(dc, item->text, (item == sel) ? selcol : normcol);

  140. 		}

  141. 		dc->w = textw(dc, ">");

  142. 		dc->x = mw - dc->w;

  143. 		if(next)

  144. 			drawtext(dc, ">", normcol);

  145. 	}

  146. 	commitdraw(dc, win);

  147. }

  148. 

  149. void

  150. grabkeyboard(void) {

  151. 	int i;

  152. 

  153. 	for(i = 0; i < 1000; i++) {

  154. 		if(!XGrabKeyboard(dc->dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime))

  155. 			return;

  156. 		usleep(1000);

  157. 	}

  158. 	eprintf("cannot grab keyboard\n");

  159. }

  160. 

  161. void

  162. insert(const char *s, ssize_t n) {

  163. 	memmove(text + cursor + n, text + cursor, sizeof text - cursor - n);

  164. 	if(n > 0)

  165. 		memcpy(text + cursor, s, n);

  166. 	cursor += n;

  167. 	match();

  168. }

  169. 

  170. void

  171. keypress(XKeyEvent *ev) {

  172. 	char buf[32];

  173. 	int n;

  174. 	size_t len;

  175. 	KeySym ksym;

  176. 

  177. 	len = strlen(text);

  178. 	XLookupString(ev, buf, sizeof buf, &ksym, NULL);

  179. 	if(ev->state & ControlMask) {

  180. 		switch(tolower(ksym)) {

  181. 		default:

  182. 			return;

  183. 		case XK_a:

  184. 			ksym = XK_Home;

  185. 			break;

  186. 		case XK_b:

  187. 			ksym = XK_Left;

  188. 			break;

  189. 		case XK_c:

  190. 			ksym = XK_Escape;

  191. 			break;

  192. 		case XK_d:

  193. 			ksym = XK_Delete;

  194. 			break;

  195. 		case XK_e:

  196. 			ksym = XK_End;

  197. 			break;

  198. 		case XK_f:

  199. 			ksym = XK_Right;

  200. 			break;

  201. 		case XK_h:

  202. 			ksym = XK_BackSpace;

  203. 			break;

  204. 		case XK_i:

  205. 			ksym = XK_Tab;

  206. 			break;

  207. 		case XK_j:

  208. 			ksym = XK_Return;

  209. 			break;

  210. 		case XK_k:  /* delete right */

  211. 			text[cursor] = '\0';

  212. 			match();

  213. 			break;

  214. 		case XK_n:

  215. 			ksym = XK_Down;

  216. 			break;

  217. 		case XK_p:

  218. 			ksym = XK_Up;

  219. 			break;

  220. 		case XK_u:  /* delete left */

  221. 			insert(NULL, -cursor);

  222. 			break;

  223. 		case XK_w:  /* delete word */

  224. 			if(cursor == 0)

  225. 				return;

  226. 			n = 0;

  227. 			while(cursor - n++ > 0 && text[cursor - n] == ' ');

  228. 			while(cursor - n++ > 0 && text[cursor - n] != ' ');

  229. 			insert(NULL, 1-n);

  230. 			break;

  231. 		case XK_y:  /* paste selection */

  232. 			XConvertSelection(dc->dpy, XA_PRIMARY, utf8, None, win, CurrentTime);

  233. 			return;

  234. 		}

  235. 	}

  236. 	switch(ksym) {

  237. 	default:

  238. 		if(isprint(*buf))

  239. 			insert(buf, MIN(strlen(buf), sizeof text - cursor));

  240. 		break;

  241. 	case XK_BackSpace:

  242. 		if(cursor == 0)

  243. 			return;

  244. 		for(n = 1; cursor - n > 0 && !UTF8_CODEPOINT(text[cursor - n]); n++);

  245. 		insert(NULL, -n);

  246. 		break;

  247. 	case XK_Delete:

  248. 		if(cursor == len)

  249. 			return;

  250. 		for(n = 1; cursor + n < len && !UTF8_CODEPOINT(text[cursor + n]); n++);

  251. 		cursor += n;

  252. 		insert(NULL, -n);

  253. 		break;

  254. 	case XK_End:

  255. 		if(cursor < len) {

  256. 			cursor = len;

  257. 			break;

  258. 		}

  259. 		while(next) {

  260. 			sel = curr = next;

  261. 			calcoffsets();

  262. 		}

  263. 		while(sel && sel->right)

  264. 			sel = sel->right;

  265. 		break;

  266. 	case XK_Escape:

  267. 		exit(EXIT_FAILURE);

  268. 	case XK_Home:

  269. 		if(sel == matches) {

  270. 			cursor = 0;

  271. 			break;

  272. 		}

  273. 		sel = curr = matches;

  274. 		calcoffsets();

  275. 		break;

  276. 	case XK_Left:

  277. 		if(cursor > 0 && (!sel || !sel->left || lines > 0)) {

  278. 			while(cursor-- > 0 && !UTF8_CODEPOINT(text[cursor]));

  279. 			break;

  280. 		}

  281. 		else if(lines > 0)

  282. 			return;

  283. 	case XK_Up:

  284. 		if(!sel || !sel->left)

  285. 			return;

  286. 		if((sel = sel->left)->right == curr) {

  287. 			curr = prev;

  288. 			calcoffsets();

  289. 		}

  290. 		break;

  291. 	case XK_Next:

  292. 		if(!next)

  293. 			return;

  294. 		sel = curr = next;

  295. 		calcoffsets();

  296. 		break;

  297. 	case XK_Prior:

  298. 		if(!prev)

  299. 			return;

  300. 		sel = curr = prev;

  301. 		calcoffsets();

  302. 		break;

  303. 	case XK_Return:

  304. 	case XK_KP_Enter:

  305. 		fputs((sel && !(ev->state & ShiftMask)) ? sel->text : text, stdout);

  306. 		fflush(stdout);

  307. 		exit(EXIT_SUCCESS);

  308. 	case XK_Right:

  309. 		if(cursor < len) {

  310. 			while(cursor++ < len && !UTF8_CODEPOINT(text[cursor]));

  311. 			break;

  312. 		}

  313. 		else if(lines > 0)

  314. 			return;

  315. 	case XK_Down:

  316. 		if(!sel || !sel->right)

  317. 			return;

  318. 		if((sel = sel->right) == next) {

  319. 			curr = next;

  320. 			calcoffsets();

  321. 		}

  322. 		break;

  323. 	case XK_Tab:

  324. 		if(!sel)

  325. 			return;

  326. 		strncpy(text, sel->text, sizeof text);

  327. 		cursor = strlen(text);

  328. 		match();

  329. 		break;

  330. 	}

  331. 	drawmenu();

  332. }

  333. 

  334. void

  335. match(void) {

  336. 	size_t len;

  337. 	Item *item, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;

  338. 

  339. 	len = strlen(text);

  340. 	matches = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;

  341. 	for(item = allitems; item; item = item->next)

  342. 		if(!fstrncmp(text, item->text, len + 1))

  343. 			appenditem(item, &lexact, &exactend);

  344. 		else if(!fstrncmp(text, item->text, len))

  345. 			appenditem(item, &lprefix, &prefixend);

  346. 		else if(fstrstr(item->text, text))

  347. 			appenditem(item, &lsubstr, &substrend);

  348. 	if(lexact) {

  349. 		matches = lexact;

  350. 		itemend = exactend;

  351. 	}

  352. 	if(lprefix) {

  353. 		if(itemend) {

  354. 			itemend->right = lprefix;

  355. 			lprefix->left = itemend;

  356. 		}

  357. 		else

  358. 			matches = lprefix;

  359. 		itemend = prefixend;

  360. 	}

  361. 	if(lsubstr) {

  362. 		if(itemend) {

  363. 			itemend->right = lsubstr;

  364. 			lsubstr->left = itemend;

  365. 		}

  366. 		else

  367. 			matches = lsubstr;

  368. 	}

  369. 	curr = prev = next = sel = matches;

  370. 	calcoffsets();

  371. }

  372. 

  373. void

  374. paste(void) {

  375. 	char *p, *q;

  376. 	int di;

  377. 	unsigned long dl;

  378. 	Atom da;

  379. 

  380. 	XGetWindowProperty(dc->dpy, win, utf8, 0, sizeof text - cursor, True,

  381. 	                   utf8, &da, &di, &dl, &dl, (unsigned char **)&p);

  382. 	insert(p, (q = strchr(p, '\n')) ? q-p : strlen(p));

  383. 	XFree(p);

  384. 	drawmenu();

  385. }

  386. 

  387. void

  388. readstdin(void) {

  389. 	char buf[sizeof text], *p;

  390. 	Item *item, *new;

  391. 

  392. 	allitems = NULL;

  393. 	for(item = NULL; fgets(buf, sizeof buf, stdin); item = new) {

  394. 		if((p = strchr(buf, '\n')))

  395. 			*p = '\0';

  396. 		if(!(new = malloc(sizeof *new)))

  397. 			eprintf("cannot malloc %u bytes\n", sizeof *new);

  398. 		if(!(new->text = strdup(buf)))

  399. 			eprintf("cannot strdup %u bytes\n", strlen(buf)+1);

  400. 		inputw = MAX(inputw, textw(dc, new->text));

  401. 		new->next = new->left = new->right = NULL;

  402. 		if(item)

  403. 			item->next = new;

  404. 		else

  405. 			allitems = new;

  406. 	}

  407. }

  408. 

  409. void

  410. run(void) {

  411. 	XEvent ev;

  412. 

  413. 	while(!XNextEvent(dc->dpy, &ev))

  414. 		switch(ev.type) {

  415. 		case Expose:

  416. 			if(ev.xexpose.count == 0)

  417. 				drawmenu();

  418. 			break;

  419. 		case KeyPress:

  420. 			keypress(&ev.xkey);

  421. 			break;

  422. 		case SelectionNotify:

  423. 			if(ev.xselection.property == utf8)

  424. 				paste();

  425. 			break;

  426. 		case VisibilityNotify:

  427. 			if(ev.xvisibility.state != VisibilityUnobscured)

  428. 				XRaiseWindow(dc->dpy, win);

  429. 			break;

  430. 		}

  431. }

  432. 

  433. void

  434. setup(void) {

  435. 	int x, y, screen;

  436. 	XSetWindowAttributes wa;

  437. #ifdef XINERAMA

  438. 	int n;

  439. 	XineramaScreenInfo *info;

  440. #endif

  441. 

  442. 	screen = DefaultScreen(dc->dpy);

  443. 	root = RootWindow(dc->dpy, screen);

  444. 	utf8 = XInternAtom(dc->dpy, "UTF8_STRING", False);

  445. 

  446. 	normcol[ColBG] = getcolor(dc, normbgcolor);

  447. 	normcol[ColFG] = getcolor(dc, normfgcolor);

  448. 	selcol[ColBG] = getcolor(dc, selbgcolor);

  449. 	selcol[ColFG] = getcolor(dc, selfgcolor);

  450. 

  451. 	/* menu geometry */

  452. 	mh = (lines + 1) * LINEH;

  453. #ifdef XINERAMA

  454. 	if((info = XineramaQueryScreens(dc->dpy, &n))) {

  455. 		int i, di;

  456. 		unsigned int du;

  457. 		Window dw;

  458. 

  459. 		XQueryPointer(dc->dpy, root, &dw, &dw, &x, &y, &di, &di, &du);

  460. 		for(i = 0; i < n; i++)

  461. 			if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))

  462. 				break;

  463. 		x = info[i].x_org;

  464. 		y = info[i].y_org + (topbar ? 0 : info[i].height - mh);

  465. 		mw = info[i].width;

  466. 		XFree(info);

  467. 	}

  468. 	else

  469. #endif

  470. 	{

  471. 		x = 0;

  472. 		y = topbar ? 0 : DisplayHeight(dc->dpy, screen) - mh;

  473. 		mw = DisplayWidth(dc->dpy, screen);

  474. 	}

  475. 	/* menu window */

  476. 	wa.override_redirect = True;

  477. 	wa.background_pixmap = ParentRelative;

  478. 	wa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;

  479. 	win = XCreateWindow(dc->dpy, root, x, y, mw, mh, 0,

  480. 	                    DefaultDepth(dc->dpy, screen), CopyFromParent,

  481. 	                    DefaultVisual(dc->dpy, screen),

  482. 	                    CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);

  483. 

  484. 	grabkeyboard();

  485. 	setcanvas(dc, mw, mh);

  486. 	inputw = MIN(inputw, mw/3);

  487. 	promptw = prompt ? MIN(textw(dc, prompt), mw/5) : 0;

  488. 	XMapRaised(dc->dpy, win);

  489. 	text[0] = '\0';

  490. 	match();

  491. }

  492. 

  493. void

  494. usage(void) {

  495. 	fputs("usage: dmenu [-b] [-i] [-l lines] [-p prompt] [-fn font] [-nb color]\n"

  496. 	      "             [-nf color] [-sb color] [-sf color] [-v]\n", stderr);

  497. 	exit(EXIT_FAILURE);

  498. }

  499. 

  500. int

  501. main(int argc, char *argv[]) {

  502. 	int i;

  503. 

  504. 	progname = "dmenu";

  505. 	for(i = 1; i < argc; i++)

  506. 		/* single flags */

  507. 		if(!strcmp(argv[i], "-v")) {

  508. 			fputs("dmenu-"VERSION", © 2006-2010 dmenu engineers, see LICENSE for details\n", stdout);

  509. 			exit(EXIT_SUCCESS);

  510. 		}

  511. 		else if(!strcmp(argv[i], "-b"))

  512. 			topbar = False;

  513. 		else if(!strcmp(argv[i], "-i")) {

  514. 			fstrncmp = strncasecmp;

  515. 			fstrstr = cistrstr;

  516. 		}

  517. 		else if(i == argc-1)

  518. 			usage();

  519. 		/* double flags */

  520. 		else if(!strcmp(argv[i], "-l"))

  521. 			lines = atoi(argv[++i]);

  522. 		else if(!strcmp(argv[i], "-p"))

  523. 			prompt = argv[++i];

  524. 		else if(!strcmp(argv[i], "-fn"))

  525. 			font = argv[++i];

  526. 		else if(!strcmp(argv[i], "-nb"))

  527. 			normbgcolor = argv[++i];

  528. 		else if(!strcmp(argv[i], "-nf"))

  529. 			normfgcolor = argv[++i];

  530. 		else if(!strcmp(argv[i], "-sb"))

  531. 			selbgcolor = argv[++i];

  532. 		else if(!strcmp(argv[i], "-sf"))

  533. 			selfgcolor = argv[++i];

  534. 		else

  535. 			usage();

  536. 

  537. 	dc = initdraw();

  538. 	initfont(dc, font);

  539. 	readstdin();

  540. 	setup();

  541. 	run();

  542. 

  543. 	return EXIT_FAILURE;  /* should not reach */

  544. }