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My dmenu build
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dmenu-rinri/dmenu.c

543 linhas
12 KiB
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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 MIN(a,b)                ((a) < (b) ? (a) : (b))

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

  18. 

  19. typedef struct Item Item;

  20. struct Item {

  21. 	char *text;

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

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

  24. };

  25. 

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

  27. static void calcoffsets(void);

  28. static void drawmenu(void);

  29. static char *fstrstr(const char *s, const char *sub);

  30. static void grabkeyboard(void);

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

  32. static void keypress(XKeyEvent *ev);

  33. static void match(void);

  34. static size_t nextrune(int incr);

  35. static void paste(void);

  36. static void readstdin(void);

  37. static void run(void);

  38. static void setup(void);

  39. static void usage(void);

  40. 

  41. static char text[BUFSIZ];

  42. static int bh, mw, mh;

  43. static int inputw = 0;

  44. static int lines = 0;

  45. static int monitor = -1;

  46. static int promptw;

  47. static size_t cursor = 0;

  48. static const char *font = NULL;

  49. static const char *prompt = NULL;

  50. static const char *normbgcolor = "#cccccc";

  51. static const char *normfgcolor = "#000000";

  52. static const char *selbgcolor  = "#0066ff";

  53. static const char *selfgcolor  = "#ffffff";

  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 *items = NULL;

  60. static Item *matches, *sel;

  61. static Item *prev, *curr, *next;

  62. static Window root, win;

  63. 

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

  65. 

  66. int

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

  68. 	int i;

  69. 

  70. 	progname = "dmenu";

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

  72. 		/* single flags */

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

  74. 			fputs("dmenu-"VERSION", © 2006-2011 dmenu engineers, see LICENSE for details\n", stdout);

  75. 			exit(EXIT_SUCCESS);

  76. 		}

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

  78. 			topbar = False;

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

  80. 			fstrncmp = strncasecmp;

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

  82. 			usage();

  83. 		/* double flags */

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

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

  86. 		else if(!strcmp(argv[i], "-m"))

  87. 			monitor = atoi(argv[++i]);

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

  89. 			prompt = argv[++i];

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

  91. 			font = argv[++i];

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

  93. 			normbgcolor = argv[++i];

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

  95. 			normfgcolor = argv[++i];

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

  97. 			selbgcolor = argv[++i];

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

  99. 			selfgcolor = argv[++i];

  100. 		else

  101. 			usage();

  102. 

  103. 	dc = initdc();

  104. 	initfont(dc, font);

  105. 	readstdin();

  106. 	setup();

  107. 	run();

  108. 

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

  110. }

  111. 

  112. void

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

  114. 	if(!*last)

  115. 		*list = item;

  116. 	else

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

  118. 	item->left = *last;

  119. 	item->right = NULL;

  120. 	*last = item;

  121. }

  122. 

  123. void

  124. calcoffsets(void) {

  125. 	unsigned int i, n;

  126. 

  127. 	if(lines > 0)

  128. 		n = lines * bh;

  129. 	else

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

  131. 

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

  133. 		if((i += (lines > 0) ? bh : MIN(textw(dc, next->text), n)) > n)

  134. 			break;

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

  136. 		if((i += (lines > 0) ? bh : MIN(textw(dc, prev->left->text), n)) > n)

  137. 			break;

  138. }

  139. 

  140. void

  141. drawmenu(void) {

  142. 	int curpos;

  143. 	Item *item;

  144. 

  145. 	dc->x = 0;

  146. 	dc->y = 0;

  147. 	dc->h = bh;

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

  149. 

  150. 	if(prompt) {

  151. 		dc->w = promptw;

  152. 		drawtext(dc, prompt, selcol);

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

  154. 	}

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

  156. 	drawtext(dc, text, normcol);

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

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

  159. 

  160. 	if(lines > 0) {

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

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

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

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

  165. 		}

  166. 	}

  167. 	else if(matches) {

  168. 		dc->x += inputw;

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

  170. 		if(curr->left)

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

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

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

  174. 			dc->w = MIN(textw(dc, item->text), mw - dc->x - textw(dc, ">"));

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

  176. 		}

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

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

  179. 		if(next)

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

  181. 	}

  182. 	mapdc(dc, win, mw, mh);

  183. }

  184. 

  185. char *

  186. fstrstr(const char *s, const char *sub) {

  187. 	size_t len;

  188. 

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

  190. 		if(!fstrncmp(s, sub, len))

  191. 			return (char *)s;

  192. 	return NULL;

  193. }

  194. 

  195. void

  196. grabkeyboard(void) {

  197. 	int i;

  198. 

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

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

  201. 			return;

  202. 		usleep(1000);

  203. 	}

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

  205. }

  206. 

  207. void

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

  209. 	if(strlen(text) + n > sizeof text - 1)

  210. 		return;

  211. 	memmove(text + cursor + n, text + cursor, sizeof text - cursor - MAX(n, 0));

  212. 	if(n > 0)

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

  214. 	cursor += n;

  215. 	match();

  216. }

  217. 

  218. void

  219. keypress(XKeyEvent *ev) {

  220. 	char buf[32];

  221. 	size_t len;

  222. 	KeySym ksym;

  223. 

  224. 	len = strlen(text);

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

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

  227. 		switch(tolower(ksym)) {

  228. 		default:

  229. 			return;

  230. 		case XK_a:

  231. 			ksym = XK_Home;

  232. 			break;

  233. 		case XK_b:

  234. 			ksym = XK_Left;

  235. 			break;

  236. 		case XK_c:

  237. 			ksym = XK_Escape;

  238. 			break;

  239. 		case XK_d:

  240. 			ksym = XK_Delete;

  241. 			break;

  242. 		case XK_e:

  243. 			ksym = XK_End;

  244. 			break;

  245. 		case XK_f:

  246. 			ksym = XK_Right;

  247. 			break;

  248. 		case XK_h:

  249. 			ksym = XK_BackSpace;

  250. 			break;

  251. 		case XK_i:

  252. 			ksym = XK_Tab;

  253. 			break;

  254. 		case XK_j:

  255. 			ksym = XK_Return;

  256. 			break;

  257. 		case XK_k:  /* delete right */

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

  259. 			match();

  260. 			break;

  261. 		case XK_n:

  262. 			ksym = XK_Down;

  263. 			break;

  264. 		case XK_p:

  265. 			ksym = XK_Up;

  266. 			break;

  267. 		case XK_u:  /* delete left */

  268. 			insert(NULL, 0 - cursor);

  269. 			break;

  270. 		case XK_w:  /* delete word */

  271. 			while(cursor > 0 && text[nextrune(-1)] == ' ')

  272. 				insert(NULL, nextrune(-1) - cursor);

  273. 			while(cursor > 0 && text[nextrune(-1)] != ' ')

  274. 				insert(NULL, nextrune(-1) - cursor);

  275. 			break;

  276. 		case XK_y:  /* paste selection */

  277. 			XConvertSelection(dc->dpy, XA_PRIMARY, utf8, utf8, win, CurrentTime);

  278. 			return;

  279. 		}

  280. 	}

  281. 	switch(ksym) {

  282. 	default:

  283. 		if(!iscntrl(*buf))

  284. 			insert(buf, strlen(buf));

  285. 		break;

  286. 	case XK_Delete:

  287. 		if(cursor == len)

  288. 			return;

  289. 		cursor = nextrune(+1);

  290. 	case XK_BackSpace:

  291. 		if(cursor > 0)

  292. 			insert(NULL, nextrune(-1) - cursor);

  293. 		break;

  294. 	case XK_End:

  295. 		if(cursor < len) {

  296. 			cursor = len;

  297. 			break;

  298. 		}

  299. 		while(next) {

  300. 			sel = curr = next;

  301. 			calcoffsets();

  302. 		}

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

  304. 			sel = sel->right;

  305. 		break;

  306. 	case XK_Escape:

  307. 		exit(EXIT_FAILURE);

  308. 	case XK_Home:

  309. 		if(sel == matches) {

  310. 			cursor = 0;

  311. 			break;

  312. 		}

  313. 		sel = curr = matches;

  314. 		calcoffsets();

  315. 		break;

  316. 	case XK_Left:

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

  318. 			cursor = nextrune(-1);

  319. 			break;

  320. 		}

  321. 		else if(lines > 0)

  322. 			return;

  323. 	case XK_Up:

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

  325. 			curr = prev;

  326. 			calcoffsets();

  327. 		}

  328. 		break;

  329. 	case XK_Next:

  330. 		if(!next)

  331. 			return;

  332. 		sel = curr = next;

  333. 		calcoffsets();

  334. 		break;

  335. 	case XK_Prior:

  336. 		if(!prev)

  337. 			return;

  338. 		sel = curr = prev;

  339. 		calcoffsets();

  340. 		break;

  341. 	case XK_Return:

  342. 	case XK_KP_Enter:

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

  344. 		fflush(stdout);

  345. 		exit(EXIT_SUCCESS);

  346. 	case XK_Right:

  347. 		if(cursor < len) {

  348. 			cursor = nextrune(+1);

  349. 			break;

  350. 		}

  351. 		else if(lines > 0)

  352. 			return;

  353. 	case XK_Down:

  354. 		if(sel && sel->right && (sel = sel->right) == next) {

  355. 			curr = next;

  356. 			calcoffsets();

  357. 		}

  358. 		break;

  359. 	case XK_Tab:

  360. 		if(!sel)

  361. 			return;

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

  363. 		cursor = strlen(text);

  364. 		match();

  365. 		break;

  366. 	}

  367. 	drawmenu();

  368. }

  369. 

  370. void

  371. match(void) {

  372. 	size_t len;

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

  374. 

  375. 	len = strlen(text);

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

  377. 	for(item = items; item; item = item->next)

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

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

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

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

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

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

  384. 

  385. 	if(lexact) {

  386. 		matches = lexact;

  387. 		itemend = exactend;

  388. 	}

  389. 	if(lprefix) {

  390. 		if(itemend) {

  391. 			itemend->right = lprefix;

  392. 			lprefix->left = itemend;

  393. 		}

  394. 		else

  395. 			matches = lprefix;

  396. 		itemend = prefixend;

  397. 	}

  398. 	if(lsubstr) {

  399. 		if(itemend) {

  400. 			itemend->right = lsubstr;

  401. 			lsubstr->left = itemend;

  402. 		}

  403. 		else

  404. 			matches = lsubstr;

  405. 	}

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

  407. 	calcoffsets();

  408. }

  409. 

  410. size_t

  411. nextrune(int incr) {

  412. 	size_t n, len;

  413. 

  414. 	len = strlen(text);

  415. 	for(n = cursor + incr; n >= 0 && n < len && (text[n] & 0xc0) == 0x80; n += incr);

  416. 	return n;

  417. }

  418. 

  419. void

  420. paste(void) {

  421. 	char *p, *q;

  422. 	int di;

  423. 	unsigned long dl;

  424. 	Atom da;

  425. 

  426. 	XGetWindowProperty(dc->dpy, win, utf8, 0, (sizeof text / 4) + 1, False,

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

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

  429. 	XFree(p);

  430. 	drawmenu();

  431. }

  432. 

  433. void

  434. readstdin(void) {

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

  436. 	Item *item, **end;

  437. 

  438. 	for(end = &items; fgets(buf, sizeof buf, stdin); *end = item, end = &item->next) {

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

  440. 			*p = '\0';

  441. 		if(!(item = malloc(sizeof *item)))

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

  443. 		if(!(item->text = strdup(buf)))

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

  445. 		item->next = item->left = item->right = NULL;

  446. 		inputw = MAX(inputw, textw(dc, item->text));

  447. 	}

  448. }

  449. 

  450. void

  451. run(void) {

  452. 	XEvent ev;

  453. 

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

  455. 		switch(ev.type) {

  456. 		case Expose:

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

  458. 				drawmenu();

  459. 			break;

  460. 		case KeyPress:

  461. 			keypress(&ev.xkey);

  462. 			break;

  463. 		case SelectionNotify:

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

  465. 				paste();

  466. 			break;

  467. 		case VisibilityNotify:

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

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

  470. 			break;

  471. 		}

  472. }

  473. 

  474. void

  475. setup(void) {

  476. 	int x, y, screen;

  477. 	XSetWindowAttributes wa;

  478. #ifdef XINERAMA

  479. 	int n;

  480. 	XineramaScreenInfo *info;

  481. #endif

  482. 

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

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

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

  486. 

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

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

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

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

  491. 

  492. 	/* menu geometry */

  493. 	bh = dc->font.height + 2;

  494. 	lines = MAX(lines, 0);

  495. 	mh = (lines + 1) * bh;

  496. #ifdef XINERAMA

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

  498. 		int i, di;

  499. 		unsigned int du;

  500. 		Window dw;

  501. 

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

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

  504. 			if((monitor == info[i].screen_number)

  505. 			|| (monitor < 0 && INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height)))

  506. 				break;

  507. 		x = info[i].x_org;

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

  509. 		mw = info[i].width;

  510. 		XFree(info);

  511. 	}

  512. 	else

  513. #endif

  514. 	{

  515. 		x = 0;

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

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

  518. 	}

  519. 	/* menu window */

  520. 	wa.override_redirect = True;

  521. 	wa.background_pixmap = ParentRelative;

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

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

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

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

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

  527. 

  528. 	grabkeyboard();

  529. 	resizedc(dc, mw, mh);

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

  531. 	promptw = prompt ? textw(dc, prompt) : 0;

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

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

  534. 	match();

  535. }

  536. 

  537. void

  538. usage(void) {

  539. 	fputs("usage: dmenu [-b] [-i] [-l lines] [-m monitor] [-p prompt] [-fn font]\n"

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

  541. 	exit(EXIT_FAILURE);

  542. }