st

simple terminal
git clone git://git.suckless.org/st
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x.c (45061B)


      1 /* See LICENSE for license details. */
      2 #include <errno.h>
      3 #include <math.h>
      4 #include <limits.h>
      5 #include <locale.h>
      6 #include <signal.h>
      7 #include <sys/select.h>
      8 #include <time.h>
      9 #include <unistd.h>
     10 #include <libgen.h>
     11 #include <X11/Xatom.h>
     12 #include <X11/Xlib.h>
     13 #include <X11/cursorfont.h>
     14 #include <X11/keysym.h>
     15 #include <X11/Xft/Xft.h>
     16 #include <X11/XKBlib.h>
     17 
     18 static char *argv0;
     19 #include "arg.h"
     20 #include "st.h"
     21 #include "win.h"
     22 
     23 /* types used in config.h */
     24 typedef struct {
     25 	uint mod;
     26 	KeySym keysym;
     27 	void (*func)(const Arg *);
     28 	const Arg arg;
     29 } Shortcut;
     30 
     31 typedef struct {
     32 	uint b;
     33 	uint mask;
     34 	char *s;
     35 } MouseShortcut;
     36 
     37 typedef struct {
     38 	KeySym k;
     39 	uint mask;
     40 	char *s;
     41 	/* three-valued logic variables: 0 indifferent, 1 on, -1 off */
     42 	signed char appkey;    /* application keypad */
     43 	signed char appcursor; /* application cursor */
     44 } Key;
     45 
     46 /* X modifiers */
     47 #define XK_ANY_MOD    UINT_MAX
     48 #define XK_NO_MOD     0
     49 #define XK_SWITCH_MOD (1<<13)
     50 
     51 /* function definitions used in config.h */
     52 static void clipcopy(const Arg *);
     53 static void clippaste(const Arg *);
     54 static void numlock(const Arg *);
     55 static void selpaste(const Arg *);
     56 static void zoom(const Arg *);
     57 static void zoomabs(const Arg *);
     58 static void zoomreset(const Arg *);
     59 
     60 /* config.h for applying patches and the configuration. */
     61 #include "config.h"
     62 
     63 /* XEMBED messages */
     64 #define XEMBED_FOCUS_IN  4
     65 #define XEMBED_FOCUS_OUT 5
     66 
     67 /* macros */
     68 #define IS_SET(flag)		((win.mode & (flag)) != 0)
     69 #define TRUERED(x)		(((x) & 0xff0000) >> 8)
     70 #define TRUEGREEN(x)		(((x) & 0xff00))
     71 #define TRUEBLUE(x)		(((x) & 0xff) << 8)
     72 
     73 typedef XftDraw *Draw;
     74 typedef XftColor Color;
     75 typedef XftGlyphFontSpec GlyphFontSpec;
     76 
     77 /* Purely graphic info */
     78 typedef struct {
     79 	int tw, th; /* tty width and height */
     80 	int w, h; /* window width and height */
     81 	int ch; /* char height */
     82 	int cw; /* char width  */
     83 	int mode; /* window state/mode flags */
     84 	int cursor; /* cursor style */
     85 } TermWindow;
     86 
     87 typedef struct {
     88 	Display *dpy;
     89 	Colormap cmap;
     90 	Window win;
     91 	Drawable buf;
     92 	GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
     93 	Atom xembed, wmdeletewin, netwmname, netwmpid;
     94 	XIM xim;
     95 	XIC xic;
     96 	Draw draw;
     97 	Visual *vis;
     98 	XSetWindowAttributes attrs;
     99 	int scr;
    100 	int isfixed; /* is fixed geometry? */
    101 	int l, t; /* left and top offset */
    102 	int gm; /* geometry mask */
    103 } XWindow;
    104 
    105 typedef struct {
    106 	Atom xtarget;
    107 	char *primary, *clipboard;
    108 	struct timespec tclick1;
    109 	struct timespec tclick2;
    110 } XSelection;
    111 
    112 /* Font structure */
    113 #define Font Font_
    114 typedef struct {
    115 	int height;
    116 	int width;
    117 	int ascent;
    118 	int descent;
    119 	int badslant;
    120 	int badweight;
    121 	short lbearing;
    122 	short rbearing;
    123 	XftFont *match;
    124 	FcFontSet *set;
    125 	FcPattern *pattern;
    126 } Font;
    127 
    128 /* Drawing Context */
    129 typedef struct {
    130 	Color *col;
    131 	size_t collen;
    132 	Font font, bfont, ifont, ibfont;
    133 	GC gc;
    134 } DC;
    135 
    136 static inline ushort sixd_to_16bit(int);
    137 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
    138 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
    139 static void xdrawglyph(Glyph, int, int);
    140 static void xclear(int, int, int, int);
    141 static int xgeommasktogravity(int);
    142 static void ximopen(Display *);
    143 static void ximinstantiate(Display *, XPointer, XPointer);
    144 static void ximdestroy(XIM, XPointer, XPointer);
    145 static void xinit(int, int);
    146 static void cresize(int, int);
    147 static void xresize(int, int);
    148 static void xhints(void);
    149 static int xloadcolor(int, const char *, Color *);
    150 static int xloadfont(Font *, FcPattern *);
    151 static void xloadfonts(char *, double);
    152 static void xunloadfont(Font *);
    153 static void xunloadfonts(void);
    154 static void xsetenv(void);
    155 static void xseturgency(int);
    156 static int evcol(XEvent *);
    157 static int evrow(XEvent *);
    158 
    159 static void expose(XEvent *);
    160 static void visibility(XEvent *);
    161 static void unmap(XEvent *);
    162 static void kpress(XEvent *);
    163 static void cmessage(XEvent *);
    164 static void resize(XEvent *);
    165 static void focus(XEvent *);
    166 static void brelease(XEvent *);
    167 static void bpress(XEvent *);
    168 static void bmotion(XEvent *);
    169 static void propnotify(XEvent *);
    170 static void selnotify(XEvent *);
    171 static void selclear_(XEvent *);
    172 static void selrequest(XEvent *);
    173 static void setsel(char *, Time);
    174 static void mousesel(XEvent *, int);
    175 static void mousereport(XEvent *);
    176 static char *kmap(KeySym, uint);
    177 static int match(uint, uint);
    178 
    179 static void run(void);
    180 static void usage(void);
    181 
    182 static void (*handler[LASTEvent])(XEvent *) = {
    183 	[KeyPress] = kpress,
    184 	[ClientMessage] = cmessage,
    185 	[ConfigureNotify] = resize,
    186 	[VisibilityNotify] = visibility,
    187 	[UnmapNotify] = unmap,
    188 	[Expose] = expose,
    189 	[FocusIn] = focus,
    190 	[FocusOut] = focus,
    191 	[MotionNotify] = bmotion,
    192 	[ButtonPress] = bpress,
    193 	[ButtonRelease] = brelease,
    194 /*
    195  * Uncomment if you want the selection to disappear when you select something
    196  * different in another window.
    197  */
    198 /*	[SelectionClear] = selclear_, */
    199 	[SelectionNotify] = selnotify,
    200 /*
    201  * PropertyNotify is only turned on when there is some INCR transfer happening
    202  * for the selection retrieval.
    203  */
    204 	[PropertyNotify] = propnotify,
    205 	[SelectionRequest] = selrequest,
    206 };
    207 
    208 /* Globals */
    209 static DC dc;
    210 static XWindow xw;
    211 static XSelection xsel;
    212 static TermWindow win;
    213 
    214 /* Font Ring Cache */
    215 enum {
    216 	FRC_NORMAL,
    217 	FRC_ITALIC,
    218 	FRC_BOLD,
    219 	FRC_ITALICBOLD
    220 };
    221 
    222 typedef struct {
    223 	XftFont *font;
    224 	int flags;
    225 	Rune unicodep;
    226 } Fontcache;
    227 
    228 /* Fontcache is an array now. A new font will be appended to the array. */
    229 static Fontcache *frc = NULL;
    230 static int frclen = 0;
    231 static int frccap = 0;
    232 static char *usedfont = NULL;
    233 static double usedfontsize = 0;
    234 static double defaultfontsize = 0;
    235 
    236 static char *opt_class = NULL;
    237 static char **opt_cmd  = NULL;
    238 static char *opt_embed = NULL;
    239 static char *opt_font  = NULL;
    240 static char *opt_io    = NULL;
    241 static char *opt_line  = NULL;
    242 static char *opt_name  = NULL;
    243 static char *opt_title = NULL;
    244 
    245 static int oldbutton = 3; /* button event on startup: 3 = release */
    246 
    247 void
    248 clipcopy(const Arg *dummy)
    249 {
    250 	Atom clipboard;
    251 
    252 	free(xsel.clipboard);
    253 	xsel.clipboard = NULL;
    254 
    255 	if (xsel.primary != NULL) {
    256 		xsel.clipboard = xstrdup(xsel.primary);
    257 		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
    258 		XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
    259 	}
    260 }
    261 
    262 void
    263 clippaste(const Arg *dummy)
    264 {
    265 	Atom clipboard;
    266 
    267 	clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
    268 	XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
    269 			xw.win, CurrentTime);
    270 }
    271 
    272 void
    273 selpaste(const Arg *dummy)
    274 {
    275 	XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
    276 			xw.win, CurrentTime);
    277 }
    278 
    279 void
    280 numlock(const Arg *dummy)
    281 {
    282 	win.mode ^= MODE_NUMLOCK;
    283 }
    284 
    285 void
    286 zoom(const Arg *arg)
    287 {
    288 	Arg larg;
    289 
    290 	larg.f = usedfontsize + arg->f;
    291 	zoomabs(&larg);
    292 }
    293 
    294 void
    295 zoomabs(const Arg *arg)
    296 {
    297 	xunloadfonts();
    298 	xloadfonts(usedfont, arg->f);
    299 	cresize(0, 0);
    300 	redraw();
    301 	xhints();
    302 }
    303 
    304 void
    305 zoomreset(const Arg *arg)
    306 {
    307 	Arg larg;
    308 
    309 	if (defaultfontsize > 0) {
    310 		larg.f = defaultfontsize;
    311 		zoomabs(&larg);
    312 	}
    313 }
    314 
    315 int
    316 evcol(XEvent *e)
    317 {
    318 	int x = e->xbutton.x - borderpx;
    319 	LIMIT(x, 0, win.tw - 1);
    320 	return x / win.cw;
    321 }
    322 
    323 int
    324 evrow(XEvent *e)
    325 {
    326 	int y = e->xbutton.y - borderpx;
    327 	LIMIT(y, 0, win.th - 1);
    328 	return y / win.ch;
    329 }
    330 
    331 void
    332 mousesel(XEvent *e, int done)
    333 {
    334 	int type, seltype = SEL_REGULAR;
    335 	uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
    336 
    337 	for (type = 1; type < LEN(selmasks); ++type) {
    338 		if (match(selmasks[type], state)) {
    339 			seltype = type;
    340 			break;
    341 		}
    342 	}
    343 	selextend(evcol(e), evrow(e), seltype, done);
    344 	if (done)
    345 		setsel(getsel(), e->xbutton.time);
    346 }
    347 
    348 void
    349 mousereport(XEvent *e)
    350 {
    351 	int len, x = evcol(e), y = evrow(e),
    352 	    button = e->xbutton.button, state = e->xbutton.state;
    353 	char buf[40];
    354 	static int ox, oy;
    355 
    356 	/* from urxvt */
    357 	if (e->xbutton.type == MotionNotify) {
    358 		if (x == ox && y == oy)
    359 			return;
    360 		if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
    361 			return;
    362 		/* MOUSE_MOTION: no reporting if no button is pressed */
    363 		if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
    364 			return;
    365 
    366 		button = oldbutton + 32;
    367 		ox = x;
    368 		oy = y;
    369 	} else {
    370 		if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
    371 			button = 3;
    372 		} else {
    373 			button -= Button1;
    374 			if (button >= 3)
    375 				button += 64 - 3;
    376 		}
    377 		if (e->xbutton.type == ButtonPress) {
    378 			oldbutton = button;
    379 			ox = x;
    380 			oy = y;
    381 		} else if (e->xbutton.type == ButtonRelease) {
    382 			oldbutton = 3;
    383 			/* MODE_MOUSEX10: no button release reporting */
    384 			if (IS_SET(MODE_MOUSEX10))
    385 				return;
    386 			if (button == 64 || button == 65)
    387 				return;
    388 		}
    389 	}
    390 
    391 	if (!IS_SET(MODE_MOUSEX10)) {
    392 		button += ((state & ShiftMask  ) ? 4  : 0)
    393 			+ ((state & Mod4Mask   ) ? 8  : 0)
    394 			+ ((state & ControlMask) ? 16 : 0);
    395 	}
    396 
    397 	if (IS_SET(MODE_MOUSESGR)) {
    398 		len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
    399 				button, x+1, y+1,
    400 				e->xbutton.type == ButtonRelease ? 'm' : 'M');
    401 	} else if (x < 223 && y < 223) {
    402 		len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
    403 				32+button, 32+x+1, 32+y+1);
    404 	} else {
    405 		return;
    406 	}
    407 
    408 	ttywrite(buf, len, 0);
    409 }
    410 
    411 void
    412 bpress(XEvent *e)
    413 {
    414 	struct timespec now;
    415 	MouseShortcut *ms;
    416 	int snap;
    417 
    418 	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
    419 		mousereport(e);
    420 		return;
    421 	}
    422 
    423 	for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
    424 		if (e->xbutton.button == ms->b
    425 				&& match(ms->mask, e->xbutton.state)) {
    426 			ttywrite(ms->s, strlen(ms->s), 1);
    427 			return;
    428 		}
    429 	}
    430 
    431 	if (e->xbutton.button == Button1) {
    432 		/*
    433 		 * If the user clicks below predefined timeouts specific
    434 		 * snapping behaviour is exposed.
    435 		 */
    436 		clock_gettime(CLOCK_MONOTONIC, &now);
    437 		if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
    438 			snap = SNAP_LINE;
    439 		} else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
    440 			snap = SNAP_WORD;
    441 		} else {
    442 			snap = 0;
    443 		}
    444 		xsel.tclick2 = xsel.tclick1;
    445 		xsel.tclick1 = now;
    446 
    447 		selstart(evcol(e), evrow(e), snap);
    448 	}
    449 }
    450 
    451 void
    452 propnotify(XEvent *e)
    453 {
    454 	XPropertyEvent *xpev;
    455 	Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
    456 
    457 	xpev = &e->xproperty;
    458 	if (xpev->state == PropertyNewValue &&
    459 			(xpev->atom == XA_PRIMARY ||
    460 			 xpev->atom == clipboard)) {
    461 		selnotify(e);
    462 	}
    463 }
    464 
    465 void
    466 selnotify(XEvent *e)
    467 {
    468 	ulong nitems, ofs, rem;
    469 	int format;
    470 	uchar *data, *last, *repl;
    471 	Atom type, incratom, property = None;
    472 
    473 	incratom = XInternAtom(xw.dpy, "INCR", 0);
    474 
    475 	ofs = 0;
    476 	if (e->type == SelectionNotify)
    477 		property = e->xselection.property;
    478 	else if (e->type == PropertyNotify)
    479 		property = e->xproperty.atom;
    480 
    481 	if (property == None)
    482 		return;
    483 
    484 	do {
    485 		if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
    486 					BUFSIZ/4, False, AnyPropertyType,
    487 					&type, &format, &nitems, &rem,
    488 					&data)) {
    489 			fprintf(stderr, "Clipboard allocation failed\n");
    490 			return;
    491 		}
    492 
    493 		if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
    494 			/*
    495 			 * If there is some PropertyNotify with no data, then
    496 			 * this is the signal of the selection owner that all
    497 			 * data has been transferred. We won't need to receive
    498 			 * PropertyNotify events anymore.
    499 			 */
    500 			MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
    501 			XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
    502 					&xw.attrs);
    503 		}
    504 
    505 		if (type == incratom) {
    506 			/*
    507 			 * Activate the PropertyNotify events so we receive
    508 			 * when the selection owner does send us the next
    509 			 * chunk of data.
    510 			 */
    511 			MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
    512 			XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
    513 					&xw.attrs);
    514 
    515 			/*
    516 			 * Deleting the property is the transfer start signal.
    517 			 */
    518 			XDeleteProperty(xw.dpy, xw.win, (int)property);
    519 			continue;
    520 		}
    521 
    522 		/*
    523 		 * As seen in getsel:
    524 		 * Line endings are inconsistent in the terminal and GUI world
    525 		 * copy and pasting. When receiving some selection data,
    526 		 * replace all '\n' with '\r'.
    527 		 * FIXME: Fix the computer world.
    528 		 */
    529 		repl = data;
    530 		last = data + nitems * format / 8;
    531 		while ((repl = memchr(repl, '\n', last - repl))) {
    532 			*repl++ = '\r';
    533 		}
    534 
    535 		if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
    536 			ttywrite("\033[200~", 6, 0);
    537 		ttywrite((char *)data, nitems * format / 8, 1);
    538 		if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
    539 			ttywrite("\033[201~", 6, 0);
    540 		XFree(data);
    541 		/* number of 32-bit chunks returned */
    542 		ofs += nitems * format / 32;
    543 	} while (rem > 0);
    544 
    545 	/*
    546 	 * Deleting the property again tells the selection owner to send the
    547 	 * next data chunk in the property.
    548 	 */
    549 	XDeleteProperty(xw.dpy, xw.win, (int)property);
    550 }
    551 
    552 void
    553 xclipcopy(void)
    554 {
    555 	clipcopy(NULL);
    556 }
    557 
    558 void
    559 selclear_(XEvent *e)
    560 {
    561 	selclear();
    562 }
    563 
    564 void
    565 selrequest(XEvent *e)
    566 {
    567 	XSelectionRequestEvent *xsre;
    568 	XSelectionEvent xev;
    569 	Atom xa_targets, string, clipboard;
    570 	char *seltext;
    571 
    572 	xsre = (XSelectionRequestEvent *) e;
    573 	xev.type = SelectionNotify;
    574 	xev.requestor = xsre->requestor;
    575 	xev.selection = xsre->selection;
    576 	xev.target = xsre->target;
    577 	xev.time = xsre->time;
    578 	if (xsre->property == None)
    579 		xsre->property = xsre->target;
    580 
    581 	/* reject */
    582 	xev.property = None;
    583 
    584 	xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
    585 	if (xsre->target == xa_targets) {
    586 		/* respond with the supported type */
    587 		string = xsel.xtarget;
    588 		XChangeProperty(xsre->display, xsre->requestor, xsre->property,
    589 				XA_ATOM, 32, PropModeReplace,
    590 				(uchar *) &string, 1);
    591 		xev.property = xsre->property;
    592 	} else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
    593 		/*
    594 		 * xith XA_STRING non ascii characters may be incorrect in the
    595 		 * requestor. It is not our problem, use utf8.
    596 		 */
    597 		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
    598 		if (xsre->selection == XA_PRIMARY) {
    599 			seltext = xsel.primary;
    600 		} else if (xsre->selection == clipboard) {
    601 			seltext = xsel.clipboard;
    602 		} else {
    603 			fprintf(stderr,
    604 				"Unhandled clipboard selection 0x%lx\n",
    605 				xsre->selection);
    606 			return;
    607 		}
    608 		if (seltext != NULL) {
    609 			XChangeProperty(xsre->display, xsre->requestor,
    610 					xsre->property, xsre->target,
    611 					8, PropModeReplace,
    612 					(uchar *)seltext, strlen(seltext));
    613 			xev.property = xsre->property;
    614 		}
    615 	}
    616 
    617 	/* all done, send a notification to the listener */
    618 	if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
    619 		fprintf(stderr, "Error sending SelectionNotify event\n");
    620 }
    621 
    622 void
    623 setsel(char *str, Time t)
    624 {
    625 	if (!str)
    626 		return;
    627 
    628 	free(xsel.primary);
    629 	xsel.primary = str;
    630 
    631 	XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
    632 	if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
    633 		selclear();
    634 }
    635 
    636 void
    637 xsetsel(char *str)
    638 {
    639 	setsel(str, CurrentTime);
    640 }
    641 
    642 void
    643 brelease(XEvent *e)
    644 {
    645 	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
    646 		mousereport(e);
    647 		return;
    648 	}
    649 
    650 	if (e->xbutton.button == Button2)
    651 		selpaste(NULL);
    652 	else if (e->xbutton.button == Button1)
    653 		mousesel(e, 1);
    654 }
    655 
    656 void
    657 bmotion(XEvent *e)
    658 {
    659 	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
    660 		mousereport(e);
    661 		return;
    662 	}
    663 
    664 	mousesel(e, 0);
    665 }
    666 
    667 void
    668 cresize(int width, int height)
    669 {
    670 	int col, row;
    671 
    672 	if (width != 0)
    673 		win.w = width;
    674 	if (height != 0)
    675 		win.h = height;
    676 
    677 	col = (win.w - 2 * borderpx) / win.cw;
    678 	row = (win.h - 2 * borderpx) / win.ch;
    679 	col = MAX(1, col);
    680 	row = MAX(1, row);
    681 
    682 	tresize(col, row);
    683 	xresize(col, row);
    684 	ttyresize(win.tw, win.th);
    685 }
    686 
    687 void
    688 xresize(int col, int row)
    689 {
    690 	win.tw = col * win.cw;
    691 	win.th = row * win.ch;
    692 
    693 	XFreePixmap(xw.dpy, xw.buf);
    694 	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
    695 			DefaultDepth(xw.dpy, xw.scr));
    696 	XftDrawChange(xw.draw, xw.buf);
    697 	xclear(0, 0, win.w, win.h);
    698 
    699 	/* resize to new width */
    700 	xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
    701 }
    702 
    703 ushort
    704 sixd_to_16bit(int x)
    705 {
    706 	return x == 0 ? 0 : 0x3737 + 0x2828 * x;
    707 }
    708 
    709 int
    710 xloadcolor(int i, const char *name, Color *ncolor)
    711 {
    712 	XRenderColor color = { .alpha = 0xffff };
    713 
    714 	if (!name) {
    715 		if (BETWEEN(i, 16, 255)) { /* 256 color */
    716 			if (i < 6*6*6+16) { /* same colors as xterm */
    717 				color.red   = sixd_to_16bit( ((i-16)/36)%6 );
    718 				color.green = sixd_to_16bit( ((i-16)/6) %6 );
    719 				color.blue  = sixd_to_16bit( ((i-16)/1) %6 );
    720 			} else { /* greyscale */
    721 				color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
    722 				color.green = color.blue = color.red;
    723 			}
    724 			return XftColorAllocValue(xw.dpy, xw.vis,
    725 			                          xw.cmap, &color, ncolor);
    726 		} else
    727 			name = colorname[i];
    728 	}
    729 
    730 	return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
    731 }
    732 
    733 void
    734 xloadcols(void)
    735 {
    736 	int i;
    737 	static int loaded;
    738 	Color *cp;
    739 
    740 	if (loaded) {
    741 		for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
    742 			XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
    743 	} else {
    744 		dc.collen = MAX(LEN(colorname), 256);
    745 		dc.col = xmalloc(dc.collen * sizeof(Color));
    746 	}
    747 
    748 	for (i = 0; i < dc.collen; i++)
    749 		if (!xloadcolor(i, NULL, &dc.col[i])) {
    750 			if (colorname[i])
    751 				die("could not allocate color '%s'\n", colorname[i]);
    752 			else
    753 				die("could not allocate color %d\n", i);
    754 		}
    755 	loaded = 1;
    756 }
    757 
    758 int
    759 xsetcolorname(int x, const char *name)
    760 {
    761 	Color ncolor;
    762 
    763 	if (!BETWEEN(x, 0, dc.collen))
    764 		return 1;
    765 
    766 	if (!xloadcolor(x, name, &ncolor))
    767 		return 1;
    768 
    769 	XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
    770 	dc.col[x] = ncolor;
    771 
    772 	return 0;
    773 }
    774 
    775 /*
    776  * Absolute coordinates.
    777  */
    778 void
    779 xclear(int x1, int y1, int x2, int y2)
    780 {
    781 	XftDrawRect(xw.draw,
    782 			&dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
    783 			x1, y1, x2-x1, y2-y1);
    784 }
    785 
    786 void
    787 xhints(void)
    788 {
    789 	XClassHint class = {opt_name ? opt_name : termname,
    790 	                    opt_class ? opt_class : termname};
    791 	XWMHints wm = {.flags = InputHint, .input = 1};
    792 	XSizeHints *sizeh;
    793 
    794 	sizeh = XAllocSizeHints();
    795 
    796 	sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
    797 	sizeh->height = win.h;
    798 	sizeh->width = win.w;
    799 	sizeh->height_inc = win.ch;
    800 	sizeh->width_inc = win.cw;
    801 	sizeh->base_height = 2 * borderpx;
    802 	sizeh->base_width = 2 * borderpx;
    803 	sizeh->min_height = win.ch + 2 * borderpx;
    804 	sizeh->min_width = win.cw + 2 * borderpx;
    805 	if (xw.isfixed) {
    806 		sizeh->flags |= PMaxSize;
    807 		sizeh->min_width = sizeh->max_width = win.w;
    808 		sizeh->min_height = sizeh->max_height = win.h;
    809 	}
    810 	if (xw.gm & (XValue|YValue)) {
    811 		sizeh->flags |= USPosition | PWinGravity;
    812 		sizeh->x = xw.l;
    813 		sizeh->y = xw.t;
    814 		sizeh->win_gravity = xgeommasktogravity(xw.gm);
    815 	}
    816 
    817 	XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
    818 			&class);
    819 	XFree(sizeh);
    820 }
    821 
    822 int
    823 xgeommasktogravity(int mask)
    824 {
    825 	switch (mask & (XNegative|YNegative)) {
    826 	case 0:
    827 		return NorthWestGravity;
    828 	case XNegative:
    829 		return NorthEastGravity;
    830 	case YNegative:
    831 		return SouthWestGravity;
    832 	}
    833 
    834 	return SouthEastGravity;
    835 }
    836 
    837 int
    838 xloadfont(Font *f, FcPattern *pattern)
    839 {
    840 	FcPattern *configured;
    841 	FcPattern *match;
    842 	FcResult result;
    843 	XGlyphInfo extents;
    844 	int wantattr, haveattr;
    845 
    846 	/*
    847 	 * Manually configure instead of calling XftMatchFont
    848 	 * so that we can use the configured pattern for
    849 	 * "missing glyph" lookups.
    850 	 */
    851 	configured = FcPatternDuplicate(pattern);
    852 	if (!configured)
    853 		return 1;
    854 
    855 	FcConfigSubstitute(NULL, configured, FcMatchPattern);
    856 	XftDefaultSubstitute(xw.dpy, xw.scr, configured);
    857 
    858 	match = FcFontMatch(NULL, configured, &result);
    859 	if (!match) {
    860 		FcPatternDestroy(configured);
    861 		return 1;
    862 	}
    863 
    864 	if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
    865 		FcPatternDestroy(configured);
    866 		FcPatternDestroy(match);
    867 		return 1;
    868 	}
    869 
    870 	if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
    871 	    XftResultMatch)) {
    872 		/*
    873 		 * Check if xft was unable to find a font with the appropriate
    874 		 * slant but gave us one anyway. Try to mitigate.
    875 		 */
    876 		if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
    877 		    &haveattr) != XftResultMatch) || haveattr < wantattr) {
    878 			f->badslant = 1;
    879 			fputs("font slant does not match\n", stderr);
    880 		}
    881 	}
    882 
    883 	if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
    884 	    XftResultMatch)) {
    885 		if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
    886 		    &haveattr) != XftResultMatch) || haveattr != wantattr) {
    887 			f->badweight = 1;
    888 			fputs("font weight does not match\n", stderr);
    889 		}
    890 	}
    891 
    892 	XftTextExtentsUtf8(xw.dpy, f->match,
    893 		(const FcChar8 *) ascii_printable,
    894 		strlen(ascii_printable), &extents);
    895 
    896 	f->set = NULL;
    897 	f->pattern = configured;
    898 
    899 	f->ascent = f->match->ascent;
    900 	f->descent = f->match->descent;
    901 	f->lbearing = 0;
    902 	f->rbearing = f->match->max_advance_width;
    903 
    904 	f->height = f->ascent + f->descent;
    905 	f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
    906 
    907 	return 0;
    908 }
    909 
    910 void
    911 xloadfonts(char *fontstr, double fontsize)
    912 {
    913 	FcPattern *pattern;
    914 	double fontval;
    915 
    916 	if (fontstr[0] == '-')
    917 		pattern = XftXlfdParse(fontstr, False, False);
    918 	else
    919 		pattern = FcNameParse((FcChar8 *)fontstr);
    920 
    921 	if (!pattern)
    922 		die("can't open font %s\n", fontstr);
    923 
    924 	if (fontsize > 1) {
    925 		FcPatternDel(pattern, FC_PIXEL_SIZE);
    926 		FcPatternDel(pattern, FC_SIZE);
    927 		FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
    928 		usedfontsize = fontsize;
    929 	} else {
    930 		if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
    931 				FcResultMatch) {
    932 			usedfontsize = fontval;
    933 		} else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
    934 				FcResultMatch) {
    935 			usedfontsize = -1;
    936 		} else {
    937 			/*
    938 			 * Default font size is 12, if none given. This is to
    939 			 * have a known usedfontsize value.
    940 			 */
    941 			FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
    942 			usedfontsize = 12;
    943 		}
    944 		defaultfontsize = usedfontsize;
    945 	}
    946 
    947 	if (xloadfont(&dc.font, pattern))
    948 		die("can't open font %s\n", fontstr);
    949 
    950 	if (usedfontsize < 0) {
    951 		FcPatternGetDouble(dc.font.match->pattern,
    952 		                   FC_PIXEL_SIZE, 0, &fontval);
    953 		usedfontsize = fontval;
    954 		if (fontsize == 0)
    955 			defaultfontsize = fontval;
    956 	}
    957 
    958 	/* Setting character width and height. */
    959 	win.cw = ceilf(dc.font.width * cwscale);
    960 	win.ch = ceilf(dc.font.height * chscale);
    961 
    962 	FcPatternDel(pattern, FC_SLANT);
    963 	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
    964 	if (xloadfont(&dc.ifont, pattern))
    965 		die("can't open font %s\n", fontstr);
    966 
    967 	FcPatternDel(pattern, FC_WEIGHT);
    968 	FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
    969 	if (xloadfont(&dc.ibfont, pattern))
    970 		die("can't open font %s\n", fontstr);
    971 
    972 	FcPatternDel(pattern, FC_SLANT);
    973 	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
    974 	if (xloadfont(&dc.bfont, pattern))
    975 		die("can't open font %s\n", fontstr);
    976 
    977 	FcPatternDestroy(pattern);
    978 }
    979 
    980 void
    981 xunloadfont(Font *f)
    982 {
    983 	XftFontClose(xw.dpy, f->match);
    984 	FcPatternDestroy(f->pattern);
    985 	if (f->set)
    986 		FcFontSetDestroy(f->set);
    987 }
    988 
    989 void
    990 xunloadfonts(void)
    991 {
    992 	/* Free the loaded fonts in the font cache.  */
    993 	while (frclen > 0)
    994 		XftFontClose(xw.dpy, frc[--frclen].font);
    995 
    996 	xunloadfont(&dc.font);
    997 	xunloadfont(&dc.bfont);
    998 	xunloadfont(&dc.ifont);
    999 	xunloadfont(&dc.ibfont);
   1000 }
   1001 
   1002 void
   1003 ximopen(Display *dpy)
   1004 {
   1005 	XIMCallback destroy = { .client_data = NULL, .callback = ximdestroy };
   1006 
   1007 	if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
   1008 		XSetLocaleModifiers("@im=local");
   1009 		if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
   1010 			XSetLocaleModifiers("@im=");
   1011 			if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL)
   1012 				die("XOpenIM failed. Could not open input device.\n");
   1013 		}
   1014 	}
   1015 	if (XSetIMValues(xw.xim, XNDestroyCallback, &destroy, NULL) != NULL)
   1016 		die("XSetIMValues failed. Could not set input method value.\n");
   1017 	xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
   1018 				XNClientWindow, xw.win, XNFocusWindow, xw.win, NULL);
   1019 	if (xw.xic == NULL)
   1020 		die("XCreateIC failed. Could not obtain input method.\n");
   1021 }
   1022 
   1023 void
   1024 ximinstantiate(Display *dpy, XPointer client, XPointer call)
   1025 {
   1026 	ximopen(dpy);
   1027 	XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
   1028 					ximinstantiate, NULL);
   1029 }
   1030 
   1031 void
   1032 ximdestroy(XIM xim, XPointer client, XPointer call)
   1033 {
   1034 	xw.xim = NULL;
   1035 	XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
   1036 					ximinstantiate, NULL);
   1037 }
   1038 
   1039 void
   1040 xinit(int cols, int rows)
   1041 {
   1042 	XGCValues gcvalues;
   1043 	Cursor cursor;
   1044 	Window parent;
   1045 	pid_t thispid = getpid();
   1046 	XColor xmousefg, xmousebg;
   1047 
   1048 	if (!(xw.dpy = XOpenDisplay(NULL)))
   1049 		die("can't open display\n");
   1050 	xw.scr = XDefaultScreen(xw.dpy);
   1051 	xw.vis = XDefaultVisual(xw.dpy, xw.scr);
   1052 
   1053 	/* font */
   1054 	if (!FcInit())
   1055 		die("could not init fontconfig.\n");
   1056 
   1057 	usedfont = (opt_font == NULL)? font : opt_font;
   1058 	xloadfonts(usedfont, 0);
   1059 
   1060 	/* colors */
   1061 	xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
   1062 	xloadcols();
   1063 
   1064 	/* adjust fixed window geometry */
   1065 	win.w = 2 * borderpx + cols * win.cw;
   1066 	win.h = 2 * borderpx + rows * win.ch;
   1067 	if (xw.gm & XNegative)
   1068 		xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
   1069 	if (xw.gm & YNegative)
   1070 		xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
   1071 
   1072 	/* Events */
   1073 	xw.attrs.background_pixel = dc.col[defaultbg].pixel;
   1074 	xw.attrs.border_pixel = dc.col[defaultbg].pixel;
   1075 	xw.attrs.bit_gravity = NorthWestGravity;
   1076 	xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
   1077 		| ExposureMask | VisibilityChangeMask | StructureNotifyMask
   1078 		| ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
   1079 	xw.attrs.colormap = xw.cmap;
   1080 
   1081 	if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
   1082 		parent = XRootWindow(xw.dpy, xw.scr);
   1083 	xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
   1084 			win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
   1085 			xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
   1086 			| CWEventMask | CWColormap, &xw.attrs);
   1087 
   1088 	memset(&gcvalues, 0, sizeof(gcvalues));
   1089 	gcvalues.graphics_exposures = False;
   1090 	dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
   1091 			&gcvalues);
   1092 	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
   1093 			DefaultDepth(xw.dpy, xw.scr));
   1094 	XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
   1095 	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
   1096 
   1097 	/* font spec buffer */
   1098 	xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
   1099 
   1100 	/* Xft rendering context */
   1101 	xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
   1102 
   1103 	/* input methods */
   1104 	ximopen(xw.dpy);
   1105 
   1106 	/* white cursor, black outline */
   1107 	cursor = XCreateFontCursor(xw.dpy, mouseshape);
   1108 	XDefineCursor(xw.dpy, xw.win, cursor);
   1109 
   1110 	if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
   1111 		xmousefg.red   = 0xffff;
   1112 		xmousefg.green = 0xffff;
   1113 		xmousefg.blue  = 0xffff;
   1114 	}
   1115 
   1116 	if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
   1117 		xmousebg.red   = 0x0000;
   1118 		xmousebg.green = 0x0000;
   1119 		xmousebg.blue  = 0x0000;
   1120 	}
   1121 
   1122 	XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
   1123 
   1124 	xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
   1125 	xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
   1126 	xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
   1127 	XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
   1128 
   1129 	xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
   1130 	XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
   1131 			PropModeReplace, (uchar *)&thispid, 1);
   1132 
   1133 	win.mode = MODE_NUMLOCK;
   1134 	resettitle();
   1135 	XMapWindow(xw.dpy, xw.win);
   1136 	xhints();
   1137 	XSync(xw.dpy, False);
   1138 
   1139 	clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
   1140 	clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
   1141 	xsel.primary = NULL;
   1142 	xsel.clipboard = NULL;
   1143 	xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
   1144 	if (xsel.xtarget == None)
   1145 		xsel.xtarget = XA_STRING;
   1146 }
   1147 
   1148 int
   1149 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
   1150 {
   1151 	float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
   1152 	ushort mode, prevmode = USHRT_MAX;
   1153 	Font *font = &dc.font;
   1154 	int frcflags = FRC_NORMAL;
   1155 	float runewidth = win.cw;
   1156 	Rune rune;
   1157 	FT_UInt glyphidx;
   1158 	FcResult fcres;
   1159 	FcPattern *fcpattern, *fontpattern;
   1160 	FcFontSet *fcsets[] = { NULL };
   1161 	FcCharSet *fccharset;
   1162 	int i, f, numspecs = 0;
   1163 
   1164 	for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
   1165 		/* Fetch rune and mode for current glyph. */
   1166 		rune = glyphs[i].u;
   1167 		mode = glyphs[i].mode;
   1168 
   1169 		/* Skip dummy wide-character spacing. */
   1170 		if (mode == ATTR_WDUMMY)
   1171 			continue;
   1172 
   1173 		/* Determine font for glyph if different from previous glyph. */
   1174 		if (prevmode != mode) {
   1175 			prevmode = mode;
   1176 			font = &dc.font;
   1177 			frcflags = FRC_NORMAL;
   1178 			runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
   1179 			if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
   1180 				font = &dc.ibfont;
   1181 				frcflags = FRC_ITALICBOLD;
   1182 			} else if (mode & ATTR_ITALIC) {
   1183 				font = &dc.ifont;
   1184 				frcflags = FRC_ITALIC;
   1185 			} else if (mode & ATTR_BOLD) {
   1186 				font = &dc.bfont;
   1187 				frcflags = FRC_BOLD;
   1188 			}
   1189 			yp = winy + font->ascent;
   1190 		}
   1191 
   1192 		/* Lookup character index with default font. */
   1193 		glyphidx = XftCharIndex(xw.dpy, font->match, rune);
   1194 		if (glyphidx) {
   1195 			specs[numspecs].font = font->match;
   1196 			specs[numspecs].glyph = glyphidx;
   1197 			specs[numspecs].x = (short)xp;
   1198 			specs[numspecs].y = (short)yp;
   1199 			xp += runewidth;
   1200 			numspecs++;
   1201 			continue;
   1202 		}
   1203 
   1204 		/* Fallback on font cache, search the font cache for match. */
   1205 		for (f = 0; f < frclen; f++) {
   1206 			glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
   1207 			/* Everything correct. */
   1208 			if (glyphidx && frc[f].flags == frcflags)
   1209 				break;
   1210 			/* We got a default font for a not found glyph. */
   1211 			if (!glyphidx && frc[f].flags == frcflags
   1212 					&& frc[f].unicodep == rune) {
   1213 				break;
   1214 			}
   1215 		}
   1216 
   1217 		/* Nothing was found. Use fontconfig to find matching font. */
   1218 		if (f >= frclen) {
   1219 			if (!font->set)
   1220 				font->set = FcFontSort(0, font->pattern,
   1221 				                       1, 0, &fcres);
   1222 			fcsets[0] = font->set;
   1223 
   1224 			/*
   1225 			 * Nothing was found in the cache. Now use
   1226 			 * some dozen of Fontconfig calls to get the
   1227 			 * font for one single character.
   1228 			 *
   1229 			 * Xft and fontconfig are design failures.
   1230 			 */
   1231 			fcpattern = FcPatternDuplicate(font->pattern);
   1232 			fccharset = FcCharSetCreate();
   1233 
   1234 			FcCharSetAddChar(fccharset, rune);
   1235 			FcPatternAddCharSet(fcpattern, FC_CHARSET,
   1236 					fccharset);
   1237 			FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
   1238 
   1239 			FcConfigSubstitute(0, fcpattern,
   1240 					FcMatchPattern);
   1241 			FcDefaultSubstitute(fcpattern);
   1242 
   1243 			fontpattern = FcFontSetMatch(0, fcsets, 1,
   1244 					fcpattern, &fcres);
   1245 
   1246 			/* Allocate memory for the new cache entry. */
   1247 			if (frclen >= frccap) {
   1248 				frccap += 16;
   1249 				frc = xrealloc(frc, frccap * sizeof(Fontcache));
   1250 			}
   1251 
   1252 			frc[frclen].font = XftFontOpenPattern(xw.dpy,
   1253 					fontpattern);
   1254 			if (!frc[frclen].font)
   1255 				die("XftFontOpenPattern failed seeking fallback font: %s\n",
   1256 					strerror(errno));
   1257 			frc[frclen].flags = frcflags;
   1258 			frc[frclen].unicodep = rune;
   1259 
   1260 			glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
   1261 
   1262 			f = frclen;
   1263 			frclen++;
   1264 
   1265 			FcPatternDestroy(fcpattern);
   1266 			FcCharSetDestroy(fccharset);
   1267 		}
   1268 
   1269 		specs[numspecs].font = frc[f].font;
   1270 		specs[numspecs].glyph = glyphidx;
   1271 		specs[numspecs].x = (short)xp;
   1272 		specs[numspecs].y = (short)yp;
   1273 		xp += runewidth;
   1274 		numspecs++;
   1275 	}
   1276 
   1277 	return numspecs;
   1278 }
   1279 
   1280 void
   1281 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
   1282 {
   1283 	int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
   1284 	int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
   1285 	    width = charlen * win.cw;
   1286 	Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
   1287 	XRenderColor colfg, colbg;
   1288 	XRectangle r;
   1289 
   1290 	/* Fallback on color display for attributes not supported by the font */
   1291 	if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
   1292 		if (dc.ibfont.badslant || dc.ibfont.badweight)
   1293 			base.fg = defaultattr;
   1294 	} else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
   1295 	    (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
   1296 		base.fg = defaultattr;
   1297 	}
   1298 
   1299 	if (IS_TRUECOL(base.fg)) {
   1300 		colfg.alpha = 0xffff;
   1301 		colfg.red = TRUERED(base.fg);
   1302 		colfg.green = TRUEGREEN(base.fg);
   1303 		colfg.blue = TRUEBLUE(base.fg);
   1304 		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
   1305 		fg = &truefg;
   1306 	} else {
   1307 		fg = &dc.col[base.fg];
   1308 	}
   1309 
   1310 	if (IS_TRUECOL(base.bg)) {
   1311 		colbg.alpha = 0xffff;
   1312 		colbg.green = TRUEGREEN(base.bg);
   1313 		colbg.red = TRUERED(base.bg);
   1314 		colbg.blue = TRUEBLUE(base.bg);
   1315 		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
   1316 		bg = &truebg;
   1317 	} else {
   1318 		bg = &dc.col[base.bg];
   1319 	}
   1320 
   1321 	/* Change basic system colors [0-7] to bright system colors [8-15] */
   1322 	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
   1323 		fg = &dc.col[base.fg + 8];
   1324 
   1325 	if (IS_SET(MODE_REVERSE)) {
   1326 		if (fg == &dc.col[defaultfg]) {
   1327 			fg = &dc.col[defaultbg];
   1328 		} else {
   1329 			colfg.red = ~fg->color.red;
   1330 			colfg.green = ~fg->color.green;
   1331 			colfg.blue = ~fg->color.blue;
   1332 			colfg.alpha = fg->color.alpha;
   1333 			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
   1334 					&revfg);
   1335 			fg = &revfg;
   1336 		}
   1337 
   1338 		if (bg == &dc.col[defaultbg]) {
   1339 			bg = &dc.col[defaultfg];
   1340 		} else {
   1341 			colbg.red = ~bg->color.red;
   1342 			colbg.green = ~bg->color.green;
   1343 			colbg.blue = ~bg->color.blue;
   1344 			colbg.alpha = bg->color.alpha;
   1345 			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
   1346 					&revbg);
   1347 			bg = &revbg;
   1348 		}
   1349 	}
   1350 
   1351 	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
   1352 		colfg.red = fg->color.red / 2;
   1353 		colfg.green = fg->color.green / 2;
   1354 		colfg.blue = fg->color.blue / 2;
   1355 		colfg.alpha = fg->color.alpha;
   1356 		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
   1357 		fg = &revfg;
   1358 	}
   1359 
   1360 	if (base.mode & ATTR_REVERSE) {
   1361 		temp = fg;
   1362 		fg = bg;
   1363 		bg = temp;
   1364 	}
   1365 
   1366 	if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
   1367 		fg = bg;
   1368 
   1369 	if (base.mode & ATTR_INVISIBLE)
   1370 		fg = bg;
   1371 
   1372 	/* Intelligent cleaning up of the borders. */
   1373 	if (x == 0) {
   1374 		xclear(0, (y == 0)? 0 : winy, borderpx,
   1375 			winy + win.ch +
   1376 			((winy + win.ch >= borderpx + win.th)? win.h : 0));
   1377 	}
   1378 	if (winx + width >= borderpx + win.tw) {
   1379 		xclear(winx + width, (y == 0)? 0 : winy, win.w,
   1380 			((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
   1381 	}
   1382 	if (y == 0)
   1383 		xclear(winx, 0, winx + width, borderpx);
   1384 	if (winy + win.ch >= borderpx + win.th)
   1385 		xclear(winx, winy + win.ch, winx + width, win.h);
   1386 
   1387 	/* Clean up the region we want to draw to. */
   1388 	XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
   1389 
   1390 	/* Set the clip region because Xft is sometimes dirty. */
   1391 	r.x = 0;
   1392 	r.y = 0;
   1393 	r.height = win.ch;
   1394 	r.width = width;
   1395 	XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
   1396 
   1397 	/* Render the glyphs. */
   1398 	XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
   1399 
   1400 	/* Render underline and strikethrough. */
   1401 	if (base.mode & ATTR_UNDERLINE) {
   1402 		XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
   1403 				width, 1);
   1404 	}
   1405 
   1406 	if (base.mode & ATTR_STRUCK) {
   1407 		XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
   1408 				width, 1);
   1409 	}
   1410 
   1411 	/* Reset clip to none. */
   1412 	XftDrawSetClip(xw.draw, 0);
   1413 }
   1414 
   1415 void
   1416 xdrawglyph(Glyph g, int x, int y)
   1417 {
   1418 	int numspecs;
   1419 	XftGlyphFontSpec spec;
   1420 
   1421 	numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
   1422 	xdrawglyphfontspecs(&spec, g, numspecs, x, y);
   1423 }
   1424 
   1425 void
   1426 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
   1427 {
   1428 	Color drawcol;
   1429 
   1430 	/* remove the old cursor */
   1431 	if (selected(ox, oy))
   1432 		og.mode ^= ATTR_REVERSE;
   1433 	xdrawglyph(og, ox, oy);
   1434 
   1435 	if (IS_SET(MODE_HIDE))
   1436 		return;
   1437 
   1438 	/*
   1439 	 * Select the right color for the right mode.
   1440 	 */
   1441 	g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
   1442 
   1443 	if (IS_SET(MODE_REVERSE)) {
   1444 		g.mode |= ATTR_REVERSE;
   1445 		g.bg = defaultfg;
   1446 		if (selected(cx, cy)) {
   1447 			drawcol = dc.col[defaultcs];
   1448 			g.fg = defaultrcs;
   1449 		} else {
   1450 			drawcol = dc.col[defaultrcs];
   1451 			g.fg = defaultcs;
   1452 		}
   1453 	} else {
   1454 		if (selected(cx, cy)) {
   1455 			g.fg = defaultfg;
   1456 			g.bg = defaultrcs;
   1457 		} else {
   1458 			g.fg = defaultbg;
   1459 			g.bg = defaultcs;
   1460 		}
   1461 		drawcol = dc.col[g.bg];
   1462 	}
   1463 
   1464 	/* draw the new one */
   1465 	if (IS_SET(MODE_FOCUSED)) {
   1466 		switch (win.cursor) {
   1467 		case 7: /* st extension: snowman (U+2603) */
   1468 			g.u = 0x2603;
   1469 		case 0: /* Blinking Block */
   1470 		case 1: /* Blinking Block (Default) */
   1471 		case 2: /* Steady Block */
   1472 			xdrawglyph(g, cx, cy);
   1473 			break;
   1474 		case 3: /* Blinking Underline */
   1475 		case 4: /* Steady Underline */
   1476 			XftDrawRect(xw.draw, &drawcol,
   1477 					borderpx + cx * win.cw,
   1478 					borderpx + (cy + 1) * win.ch - \
   1479 						cursorthickness,
   1480 					win.cw, cursorthickness);
   1481 			break;
   1482 		case 5: /* Blinking bar */
   1483 		case 6: /* Steady bar */
   1484 			XftDrawRect(xw.draw, &drawcol,
   1485 					borderpx + cx * win.cw,
   1486 					borderpx + cy * win.ch,
   1487 					cursorthickness, win.ch);
   1488 			break;
   1489 		}
   1490 	} else {
   1491 		XftDrawRect(xw.draw, &drawcol,
   1492 				borderpx + cx * win.cw,
   1493 				borderpx + cy * win.ch,
   1494 				win.cw - 1, 1);
   1495 		XftDrawRect(xw.draw, &drawcol,
   1496 				borderpx + cx * win.cw,
   1497 				borderpx + cy * win.ch,
   1498 				1, win.ch - 1);
   1499 		XftDrawRect(xw.draw, &drawcol,
   1500 				borderpx + (cx + 1) * win.cw - 1,
   1501 				borderpx + cy * win.ch,
   1502 				1, win.ch - 1);
   1503 		XftDrawRect(xw.draw, &drawcol,
   1504 				borderpx + cx * win.cw,
   1505 				borderpx + (cy + 1) * win.ch - 1,
   1506 				win.cw, 1);
   1507 	}
   1508 }
   1509 
   1510 void
   1511 xsetenv(void)
   1512 {
   1513 	char buf[sizeof(long) * 8 + 1];
   1514 
   1515 	snprintf(buf, sizeof(buf), "%lu", xw.win);
   1516 	setenv("WINDOWID", buf, 1);
   1517 }
   1518 
   1519 void
   1520 xsettitle(char *p)
   1521 {
   1522 	XTextProperty prop;
   1523 	DEFAULT(p, opt_title);
   1524 
   1525 	Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
   1526 			&prop);
   1527 	XSetWMName(xw.dpy, xw.win, &prop);
   1528 	XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
   1529 	XFree(prop.value);
   1530 }
   1531 
   1532 int
   1533 xstartdraw(void)
   1534 {
   1535 	return IS_SET(MODE_VISIBLE);
   1536 }
   1537 
   1538 void
   1539 xdrawline(Line line, int x1, int y1, int x2)
   1540 {
   1541 	int i, x, ox, numspecs;
   1542 	Glyph base, new;
   1543 	XftGlyphFontSpec *specs = xw.specbuf;
   1544 
   1545 	numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
   1546 	i = ox = 0;
   1547 	for (x = x1; x < x2 && i < numspecs; x++) {
   1548 		new = line[x];
   1549 		if (new.mode == ATTR_WDUMMY)
   1550 			continue;
   1551 		if (selected(x, y1))
   1552 			new.mode ^= ATTR_REVERSE;
   1553 		if (i > 0 && ATTRCMP(base, new)) {
   1554 			xdrawglyphfontspecs(specs, base, i, ox, y1);
   1555 			specs += i;
   1556 			numspecs -= i;
   1557 			i = 0;
   1558 		}
   1559 		if (i == 0) {
   1560 			ox = x;
   1561 			base = new;
   1562 		}
   1563 		i++;
   1564 	}
   1565 	if (i > 0)
   1566 		xdrawglyphfontspecs(specs, base, i, ox, y1);
   1567 }
   1568 
   1569 void
   1570 xfinishdraw(void)
   1571 {
   1572 	XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
   1573 			win.h, 0, 0);
   1574 	XSetForeground(xw.dpy, dc.gc,
   1575 			dc.col[IS_SET(MODE_REVERSE)?
   1576 				defaultfg : defaultbg].pixel);
   1577 }
   1578 
   1579 void
   1580 xximspot(int x, int y)
   1581 {
   1582 	XPoint spot = { borderpx + x * win.cw, borderpx + (y + 1) * win.ch };
   1583 	XVaNestedList attr = XVaCreateNestedList(0, XNSpotLocation, &spot, NULL);
   1584 
   1585 	XSetICValues(xw.xic, XNPreeditAttributes, attr, NULL);
   1586 	XFree(attr);
   1587 }
   1588 
   1589 void
   1590 expose(XEvent *ev)
   1591 {
   1592 	redraw();
   1593 }
   1594 
   1595 void
   1596 visibility(XEvent *ev)
   1597 {
   1598 	XVisibilityEvent *e = &ev->xvisibility;
   1599 
   1600 	MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
   1601 }
   1602 
   1603 void
   1604 unmap(XEvent *ev)
   1605 {
   1606 	win.mode &= ~MODE_VISIBLE;
   1607 }
   1608 
   1609 void
   1610 xsetpointermotion(int set)
   1611 {
   1612 	MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
   1613 	XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
   1614 }
   1615 
   1616 void
   1617 xsetmode(int set, unsigned int flags)
   1618 {
   1619 	int mode = win.mode;
   1620 	MODBIT(win.mode, set, flags);
   1621 	if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
   1622 		redraw();
   1623 }
   1624 
   1625 int
   1626 xsetcursor(int cursor)
   1627 {
   1628 	DEFAULT(cursor, 1);
   1629 	if (!BETWEEN(cursor, 0, 6))
   1630 		return 1;
   1631 	win.cursor = cursor;
   1632 	return 0;
   1633 }
   1634 
   1635 void
   1636 xseturgency(int add)
   1637 {
   1638 	XWMHints *h = XGetWMHints(xw.dpy, xw.win);
   1639 
   1640 	MODBIT(h->flags, add, XUrgencyHint);
   1641 	XSetWMHints(xw.dpy, xw.win, h);
   1642 	XFree(h);
   1643 }
   1644 
   1645 void
   1646 xbell(void)
   1647 {
   1648 	if (!(IS_SET(MODE_FOCUSED)))
   1649 		xseturgency(1);
   1650 	if (bellvolume)
   1651 		XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
   1652 }
   1653 
   1654 void
   1655 focus(XEvent *ev)
   1656 {
   1657 	XFocusChangeEvent *e = &ev->xfocus;
   1658 
   1659 	if (e->mode == NotifyGrab)
   1660 		return;
   1661 
   1662 	if (ev->type == FocusIn) {
   1663 		XSetICFocus(xw.xic);
   1664 		win.mode |= MODE_FOCUSED;
   1665 		xseturgency(0);
   1666 		if (IS_SET(MODE_FOCUS))
   1667 			ttywrite("\033[I", 3, 0);
   1668 	} else {
   1669 		XUnsetICFocus(xw.xic);
   1670 		win.mode &= ~MODE_FOCUSED;
   1671 		if (IS_SET(MODE_FOCUS))
   1672 			ttywrite("\033[O", 3, 0);
   1673 	}
   1674 }
   1675 
   1676 int
   1677 match(uint mask, uint state)
   1678 {
   1679 	return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
   1680 }
   1681 
   1682 char*
   1683 kmap(KeySym k, uint state)
   1684 {
   1685 	Key *kp;
   1686 	int i;
   1687 
   1688 	/* Check for mapped keys out of X11 function keys. */
   1689 	for (i = 0; i < LEN(mappedkeys); i++) {
   1690 		if (mappedkeys[i] == k)
   1691 			break;
   1692 	}
   1693 	if (i == LEN(mappedkeys)) {
   1694 		if ((k & 0xFFFF) < 0xFD00)
   1695 			return NULL;
   1696 	}
   1697 
   1698 	for (kp = key; kp < key + LEN(key); kp++) {
   1699 		if (kp->k != k)
   1700 			continue;
   1701 
   1702 		if (!match(kp->mask, state))
   1703 			continue;
   1704 
   1705 		if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
   1706 			continue;
   1707 		if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
   1708 			continue;
   1709 
   1710 		if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
   1711 			continue;
   1712 
   1713 		return kp->s;
   1714 	}
   1715 
   1716 	return NULL;
   1717 }
   1718 
   1719 void
   1720 kpress(XEvent *ev)
   1721 {
   1722 	XKeyEvent *e = &ev->xkey;
   1723 	KeySym ksym;
   1724 	char buf[32], *customkey;
   1725 	int len;
   1726 	Rune c;
   1727 	Status status;
   1728 	Shortcut *bp;
   1729 
   1730 	if (IS_SET(MODE_KBDLOCK))
   1731 		return;
   1732 
   1733 	len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
   1734 	/* 1. shortcuts */
   1735 	for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
   1736 		if (ksym == bp->keysym && match(bp->mod, e->state)) {
   1737 			bp->func(&(bp->arg));
   1738 			return;
   1739 		}
   1740 	}
   1741 
   1742 	/* 2. custom keys from config.h */
   1743 	if ((customkey = kmap(ksym, e->state))) {
   1744 		ttywrite(customkey, strlen(customkey), 1);
   1745 		return;
   1746 	}
   1747 
   1748 	/* 3. composed string from input method */
   1749 	if (len == 0)
   1750 		return;
   1751 	if (len == 1 && e->state & Mod1Mask) {
   1752 		if (IS_SET(MODE_8BIT)) {
   1753 			if (*buf < 0177) {
   1754 				c = *buf | 0x80;
   1755 				len = utf8encode(c, buf);
   1756 			}
   1757 		} else {
   1758 			buf[1] = buf[0];
   1759 			buf[0] = '\033';
   1760 			len = 2;
   1761 		}
   1762 	}
   1763 	ttywrite(buf, len, 1);
   1764 }
   1765 
   1766 void
   1767 cmessage(XEvent *e)
   1768 {
   1769 	/*
   1770 	 * See xembed specs
   1771 	 *  http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
   1772 	 */
   1773 	if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
   1774 		if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
   1775 			win.mode |= MODE_FOCUSED;
   1776 			xseturgency(0);
   1777 		} else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
   1778 			win.mode &= ~MODE_FOCUSED;
   1779 		}
   1780 	} else if (e->xclient.data.l[0] == xw.wmdeletewin) {
   1781 		ttyhangup();
   1782 		exit(0);
   1783 	}
   1784 }
   1785 
   1786 void
   1787 resize(XEvent *e)
   1788 {
   1789 	if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
   1790 		return;
   1791 
   1792 	cresize(e->xconfigure.width, e->xconfigure.height);
   1793 }
   1794 
   1795 void
   1796 run(void)
   1797 {
   1798 	XEvent ev;
   1799 	int w = win.w, h = win.h;
   1800 	fd_set rfd;
   1801 	int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
   1802 	int ttyfd;
   1803 	struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
   1804 	long deltatime;
   1805 
   1806 	/* Waiting for window mapping */
   1807 	do {
   1808 		XNextEvent(xw.dpy, &ev);
   1809 		/*
   1810 		 * This XFilterEvent call is required because of XOpenIM. It
   1811 		 * does filter out the key event and some client message for
   1812 		 * the input method too.
   1813 		 */
   1814 		if (XFilterEvent(&ev, None))
   1815 			continue;
   1816 		if (ev.type == ConfigureNotify) {
   1817 			w = ev.xconfigure.width;
   1818 			h = ev.xconfigure.height;
   1819 		}
   1820 	} while (ev.type != MapNotify);
   1821 
   1822 	ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
   1823 	cresize(w, h);
   1824 
   1825 	clock_gettime(CLOCK_MONOTONIC, &last);
   1826 	lastblink = last;
   1827 
   1828 	for (xev = actionfps;;) {
   1829 		FD_ZERO(&rfd);
   1830 		FD_SET(ttyfd, &rfd);
   1831 		FD_SET(xfd, &rfd);
   1832 
   1833 		if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
   1834 			if (errno == EINTR)
   1835 				continue;
   1836 			die("select failed: %s\n", strerror(errno));
   1837 		}
   1838 		if (FD_ISSET(ttyfd, &rfd)) {
   1839 			ttyread();
   1840 			if (blinktimeout) {
   1841 				blinkset = tattrset(ATTR_BLINK);
   1842 				if (!blinkset)
   1843 					MODBIT(win.mode, 0, MODE_BLINK);
   1844 			}
   1845 		}
   1846 
   1847 		if (FD_ISSET(xfd, &rfd))
   1848 			xev = actionfps;
   1849 
   1850 		clock_gettime(CLOCK_MONOTONIC, &now);
   1851 		drawtimeout.tv_sec = 0;
   1852 		drawtimeout.tv_nsec =  (1000 * 1E6)/ xfps;
   1853 		tv = &drawtimeout;
   1854 
   1855 		dodraw = 0;
   1856 		if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
   1857 			tsetdirtattr(ATTR_BLINK);
   1858 			win.mode ^= MODE_BLINK;
   1859 			lastblink = now;
   1860 			dodraw = 1;
   1861 		}
   1862 		deltatime = TIMEDIFF(now, last);
   1863 		if (deltatime > 1000 / (xev ? xfps : actionfps)) {
   1864 			dodraw = 1;
   1865 			last = now;
   1866 		}
   1867 
   1868 		if (dodraw) {
   1869 			while (XPending(xw.dpy)) {
   1870 				XNextEvent(xw.dpy, &ev);
   1871 				if (XFilterEvent(&ev, None))
   1872 					continue;
   1873 				if (handler[ev.type])
   1874 					(handler[ev.type])(&ev);
   1875 			}
   1876 
   1877 			draw();
   1878 			XFlush(xw.dpy);
   1879 
   1880 			if (xev && !FD_ISSET(xfd, &rfd))
   1881 				xev--;
   1882 			if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
   1883 				if (blinkset) {
   1884 					if (TIMEDIFF(now, lastblink) \
   1885 							> blinktimeout) {
   1886 						drawtimeout.tv_nsec = 1000;
   1887 					} else {
   1888 						drawtimeout.tv_nsec = (1E6 * \
   1889 							(blinktimeout - \
   1890 							TIMEDIFF(now,
   1891 								lastblink)));
   1892 					}
   1893 					drawtimeout.tv_sec = \
   1894 					    drawtimeout.tv_nsec / 1E9;
   1895 					drawtimeout.tv_nsec %= (long)1E9;
   1896 				} else {
   1897 					tv = NULL;
   1898 				}
   1899 			}
   1900 		}
   1901 	}
   1902 }
   1903 
   1904 void
   1905 usage(void)
   1906 {
   1907 	die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
   1908 	    " [-n name] [-o file]\n"
   1909 	    "          [-T title] [-t title] [-w windowid]"
   1910 	    " [[-e] command [args ...]]\n"
   1911 	    "       %s [-aiv] [-c class] [-f font] [-g geometry]"
   1912 	    " [-n name] [-o file]\n"
   1913 	    "          [-T title] [-t title] [-w windowid] -l line"
   1914 	    " [stty_args ...]\n", argv0, argv0);
   1915 }
   1916 
   1917 int
   1918 main(int argc, char *argv[])
   1919 {
   1920 	xw.l = xw.t = 0;
   1921 	xw.isfixed = False;
   1922 	win.cursor = cursorshape;
   1923 
   1924 	ARGBEGIN {
   1925 	case 'a':
   1926 		allowaltscreen = 0;
   1927 		break;
   1928 	case 'c':
   1929 		opt_class = EARGF(usage());
   1930 		break;
   1931 	case 'e':
   1932 		if (argc > 0)
   1933 			--argc, ++argv;
   1934 		goto run;
   1935 	case 'f':
   1936 		opt_font = EARGF(usage());
   1937 		break;
   1938 	case 'g':
   1939 		xw.gm = XParseGeometry(EARGF(usage()),
   1940 				&xw.l, &xw.t, &cols, &rows);
   1941 		break;
   1942 	case 'i':
   1943 		xw.isfixed = 1;
   1944 		break;
   1945 	case 'o':
   1946 		opt_io = EARGF(usage());
   1947 		break;
   1948 	case 'l':
   1949 		opt_line = EARGF(usage());
   1950 		break;
   1951 	case 'n':
   1952 		opt_name = EARGF(usage());
   1953 		break;
   1954 	case 't':
   1955 	case 'T':
   1956 		opt_title = EARGF(usage());
   1957 		break;
   1958 	case 'w':
   1959 		opt_embed = EARGF(usage());
   1960 		break;
   1961 	case 'v':
   1962 		die("%s " VERSION "\n", argv0);
   1963 		break;
   1964 	default:
   1965 		usage();
   1966 	} ARGEND;
   1967 
   1968 run:
   1969 	if (argc > 0) /* eat all remaining arguments */
   1970 		opt_cmd = argv;
   1971 
   1972 	if (!opt_title)
   1973 		opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
   1974 
   1975 	setlocale(LC_CTYPE, "");
   1976 	XSetLocaleModifiers("");
   1977 	cols = MAX(cols, 1);
   1978 	rows = MAX(rows, 1);
   1979 	tnew(cols, rows);
   1980 	xinit(cols, rows);
   1981 	xsetenv();
   1982 	selinit();
   1983 	run();
   1984 
   1985 	return 0;
   1986 }