src/rt/x10.c

/* Copyright (c) 1987 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  x10.c - driver for X-windows version 10.4
 *
 *     5/7/87
 */

#include  <stdio.h>

#include  <sys/ioctl.h>

#include  <X/Xlib.h>
#include  <X/cursors/bcross.cursor>
#include  <X/cursors/bcross_mask.cursor>

#include  "color.h"

#include  "driver.h"

#include  "xtwind.h"

#define GAMMA           2.0             /* exponent for color correction */

#define BORWIDTH        5               /* border width */
#define BARHEIGHT       25              /* menu bar size */
#define COMHEIGHT       (COMLH*COMCH)   /* command line height (pixels) */

#define COMFN           "8x13"          /* command line font name */
#define COMLH           3               /* number of command lines */
#define COMCW           8               /* approx. character width (pixels) */
#define COMCH           13              /* approx. character height (pixels) */

#ifndef WFLUSH
#define WFLUSH          30              /* flush after this many rays */
#endif

#define  hashcolr(c)    ((67*(c)[RED]+59*(c)[GRN]+71*(c)[BLU])%ncolors)

#define  checkinp()     while (XPending() > 0) getevent()

#define  levptr(etype)  ((etype *)&thisevent)

static char  *clientname;               /* calling client's name */

static XEvent  thisevent;               /* current event */

static int  colres = 128;               /* color resolution */
static COLR  colrmap[256];              /* our color mapping */

static int  ncolors = 0;                /* color table size */
static COLR  *colrtbl;                  /* our color table */
static int  *pixval;                    /* associated pixel values */

static Display  *ourdisplay = NULL;     /* our display */

static Window  gwind = 0;               /* our graphics window */

static Cursor  pickcursor = 0;          /* cursor used for picking */

static int  gwidth = 0;                 /* graphics window width */
static int  gheight = 0;                /* graphics window height */

static TEXTWIND  *comline = NULL;       /* our command line */

static char  c_queue[64];               /* input queue */
static int  c_first = 0;                /* first character in queue */
static int  c_last = 0;                 /* last character in queue */

extern char  *malloc();

int  x_close(), x_clear(), x_paintr(), x_errout(),
                x_getcur(), x_comout(), x_comin();

static struct driver  x_driver = {
        x_close, x_clear, x_paintr, x_getcur,
        x_comout, x_comin,
        MAXRES, MAXRES
};


struct driver *
x_init(name)                    /* initialize driver */
char  *name;
{
        ourdisplay = XOpenDisplay(NULL);
        if (ourdisplay == NULL) {
                stderr_v("cannot open X-windows; DISPLAY variable set?\n");
                return(NULL);
        }
        if (DisplayPlanes() < 4) {
                stderr_v("not enough colors\n");
                return(NULL);
        }
        if (getmap() < 0)                       /* not fatal */
                stderr_v("cannot allocate colors\n");

        pickcursor = XCreateCursor(bcross_width, bcross_height,
                        bcross_bits, bcross_mask_bits,
                        bcross_x_hot, bcross_y_hot,
                        BlackPixel, WhitePixel, GXcopy);
        clientname = name;
        x_driver.inpready = 0;
        cmdvec = x_comout;                      /* set error vectors */
        if (wrnvec != NULL)
                wrnvec = x_errout;
        return(&x_driver);
}


static
x_close()                       /* close our display */
{
        cmdvec = NULL;                          /* reset error vectors */
        if (wrnvec != NULL)
                wrnvec = stderr_v;
        if (ourdisplay == NULL)
                return;
        if (comline != NULL) {
                xt_close(comline);
                comline = NULL;
        }
        if (gwind != 0) {
                XDestroyWindow(gwind);
                gwind = 0;
                gwidth = gheight = 0;
        }
        XFreeCursor(pickcursor);
        freemap();
        XCloseDisplay(ourdisplay);
        ourdisplay = NULL;
}


static
x_clear(xres, yres)                     /* clear our display */
int  xres, yres;
{
        if (xres != gwidth || yres != gheight) {        /* new window */
                if (comline != NULL)
                        xt_close(comline);
                if (gwind != 0)
                        XDestroyWindow(gwind);
                gwind = XCreateWindow(RootWindow, 0, BARHEIGHT,
                                xres, yres+COMHEIGHT, BORWIDTH,
                                BlackPixmap, BlackPixmap);
                if (gwind == 0)
                        goto fail;
                comline = xt_open(gwind, 0, yres, xres, COMHEIGHT, 0, COMFN);
                if (comline == NULL)
                        goto fail;
                XMapWindow(gwind);
                XSelectInput(gwind,
        KeyPressed|ButtonPressed|ExposeWindow|ExposeRegion|UnmapWindow);
                XStoreName(gwind, clientname);
                gwidth = xres;
                gheight = yres;
        } else                                          /* just clear */
                XClear(gwind);
        newmap();
        checkinp();
        return;
fail:
        stderr_v("Failure opening window in x_clear\n");
        quit(1);
}


static
x_paintr(col, xmin, ymin, xmax, ymax)           /* fill a rectangle */
COLOR  col;
int  xmin, ymin, xmax, ymax;
{
        extern long  nrays;             /* global ray count */
        static long  lastflush = 0;     /* ray count at last flush */
        int  ndx;

        if (ncolors > 0) {
                if ((ndx = colindex(col)) < 0) {
                        colres >>= 1;
                        redraw();
                        return;
                }
                XPixSet(gwind, xmin, gheight-ymax, xmax-xmin, ymax-ymin,
                                pixval[ndx]);
        }
        if (nrays - lastflush >= WFLUSH) {
                if (ncolors <= 0)       /* output necessary for death */
                        XPixSet(gwind,0,0,1,1,BlackPixel);
                checkinp();
                lastflush = nrays;
        }
}


static
x_comin(inp)                    /* read in a command line */
char  *inp;
{
        int  x_getc(), x_comout();

        xt_cursor(comline, TBLKCURS);
        editline(inp, x_getc, x_comout);
        xt_cursor(comline, TNOCURS);
}


static
x_comout(out)                   /* output a string to command line */
char  *out;
{
        if (comline != NULL)
                xt_puts(out, comline);
        XFlush();
}


static
x_errout(msg)                   /* output an error message */
char  *msg;
{
        x_comout(msg);
        stderr_v(msg);          /* send to stderr also! */
}


static int
x_getcur(xp, yp)                /* get cursor position */
int  *xp, *yp;
{
        while (XGrabMouse(gwind, pickcursor, ButtonPressed) == 0)
                sleep(1);
        XFocusKeyboard(gwind);
        do
                getevent();
        while (c_last <= c_first && levptr(XEvent)->type != ButtonPressed);
        *xp = levptr(XKeyOrButtonEvent)->x;
        *yp = gheight-1 - levptr(XKeyOrButtonEvent)->y;
        XFocusKeyboard(RootWindow);
        XUngrabMouse();
        XFlush();                               /* insure release */
        if (c_last > c_first)                   /* key pressed */
                return(x_getc());
                                                /* button pressed */
        switch (levptr(XKeyOrButtonEvent)->detail & 0377) {
        case LeftButton:
                return(MB1);
        case MiddleButton:
                return(MB2);
        case RightButton:
                return(MB3);
        }
        return(ABORT);
}


static int
colindex(col)                   /* return index for color */
COLOR  col;
{
        static COLR  clr;
        int  hval;
        register int  ndx, i;

        mapcolor(clr, col);

        hval = ndx = hashcolr(clr);
        
        for (i = 1; i < ncolors; i++) {
                if (colrtbl[ndx][EXP] == 0) {
                        colrtbl[ndx][RED] = clr[RED];
                        colrtbl[ndx][GRN] = clr[GRN];
                        colrtbl[ndx][BLU] = clr[BLU];
                        colrtbl[ndx][EXP] = COLXS;
                        newcolr(ndx, clr);
                        return(ndx);
                }
                if (            colrtbl[ndx][RED] == clr[RED] &&
                                colrtbl[ndx][GRN] == clr[GRN] &&
                                colrtbl[ndx][BLU] == clr[BLU]   )
                        return(ndx);
                ndx = (hval + i*i) % ncolors;
        }
        return(-1);
}


static
newcolr(ndx, clr)               /* enter a color into hardware table */
int  ndx;
COLR  clr;
{
        Color  xcolor;

        xcolor.pixel = pixval[ndx];
        xcolor.red = clr[RED] << 8;
        xcolor.green = clr[GRN] << 8;
        xcolor.blue = clr[BLU] << 8;

        XStoreColor(&xcolor);
}


static
mapcolor(clr, col)                      /* map to our color space */
COLR  clr;
COLOR  col;
{
        register int  i, p;
                                        /* compute color table value */
        for (i = 0; i < 3; i++) {
                p = colval(col,i) * 255.0 + 0.5;
                if (p < 0) p = 0;
                else if (p > 255) p = 255;
                clr[i] = colrmap[p][i];
        }
        clr[EXP] = COLXS;
}


static
getmap()                                /* get the color map */
{
        int  planes;

        for (ncolors=(1<<DisplayPlanes())-3; ncolors>12; ncolors=ncolors*.937){
                colrtbl = (COLR *)malloc(ncolors*sizeof(COLR));
                pixval = (int *)malloc(ncolors*sizeof(int));
                if (colrtbl == NULL || pixval == NULL)
                        return(-1);
                if (XGetColorCells(0,ncolors,0,&planes,pixval) != 0)
                        return(0);
                free((char *)colrtbl);
                free((char *)pixval);
        }
        ncolors = 0;
        return(-1);
}


static
freemap()                               /* free our color map */
{
        if (ncolors == 0)
                return;
        XFreeColors(pixval, ncolors, 0);
        free((char *)colrtbl);
        free((char *)pixval);
        ncolors = 0;
}


static
newmap()                                /* initialize the color map */
{
        double  pow();
        int  val;
        register int  i;

        for (i = 0; i < 256; i++) {
                val = pow(i/256.0, 1.0/GAMMA) * colres;
                val = (val*256 + 128) / colres;
                colrmap[i][RED] = colrmap[i][GRN] = colrmap[i][BLU] = val;
                colrmap[i][EXP] = COLXS;
        }
        for (i = 0; i < ncolors; i++)
                colrtbl[i][EXP] = 0;
}


static int
x_getc()                        /* get a command character */
{
        while (c_last <= c_first) {
                c_first = c_last = 0;           /* reset */
                getevent();                     /* wait for key */
        }
        x_driver.inpready--;
        return(c_queue[c_first++]);
}


static
getevent()                      /* get next event */
{
        XNextEvent(levptr(XEvent));
        switch (levptr(XEvent)->type) {
        case KeyPressed:
                getkey(levptr(XKeyPressedEvent));
                break;
        case ExposeWindow:
                if (ncolors == 0 && levptr(XExposeEvent)->subwindow == 0)
                        if (getmap() < 0)
                                stderr_v("cannot grab colors\n");
                        else
                                newmap();
                /* fall through */
        case ExposeRegion:
                fixwindow(levptr(XExposeEvent));
                break;
        case UnmapWindow:
                if (levptr(XUnmapEvent)->subwindow == 0)
                        freemap();
                break;
        case ButtonPressed:             /* handled in x_getcur() */
                break;
        }
}


static
getkey(ekey)                            /* get input key */
register XKeyPressedEvent  *ekey;
{
        int  n;
        register char  *str;

        str = XLookupMapping(ekey, &n);
        while (n-- > 0 && c_last < sizeof(c_queue))
                c_queue[c_last++] = *str++;
        x_driver.inpready = c_last - c_first;
}


static
fixwindow(eexp)                         /* repair damage to window */
register XExposeEvent  *eexp;
{
        if (eexp->subwindow == 0)
                repaint(eexp->x, gheight - eexp->y - eexp->height,
                        eexp->x + eexp->width, gheight - eexp->y);
        else if (eexp->subwindow == comline->w)
                xt_redraw(comline);
}
Revision:	1.11
Committed:	Fri Sep 29 13:23:59 1989 UTC (35 years, 7 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.10:	+1 -13 lines
Log Message:	Added word erase and allowed ^H or ^?, ^U or ^X in editline.
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1987 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* x10.c - driver for X-windows version 10.4
9			*
10			* 5/7/87
11			*/
12
13			#include <stdio.h>
14
15			#include <sys/ioctl.h>
16
17			#include <X/Xlib.h>
18			#include <X/cursors/bcross.cursor>
19			#include <X/cursors/bcross_mask.cursor>
20
21			#include "color.h"
22
23			#include "driver.h"
24
25			#include "xtwind.h"
26
27			#define GAMMA 2.0 /* exponent for color correction */
28
29			#define BORWIDTH 5 /* border width */
30			#define BARHEIGHT 25 /* menu bar size */
31			#define COMHEIGHT (COMLHCOMCH) / command line height (pixels) */
32
33			#define COMFN "8x13" /* command line font name */
34			#define COMLH 3 /* number of command lines */
35			#define COMCW 8 /* approx. character width (pixels) */
36			#define COMCH 13 /* approx. character height (pixels) */
37
38			#ifndef WFLUSH
39	greg	1.10	#define WFLUSH 30 /* flush after this many rays */
40	greg	1.1	#endif
41
42			#define hashcolr(c) ((67(c)[RED]+59(c)[GRN]+71*(c)[BLU])%ncolors)
43
44	greg	1.8	#define checkinp() while (XPending() > 0) getevent()
45	greg	1.1
46			#define levptr(etype) ((etype *)&thisevent)
47
48			static char clientname; / calling client's name */
49
50			static XEvent thisevent; /* current event */
51
52			static int colres = 128; /* color resolution */
53			static COLR colrmap[256]; /* our color mapping */
54
55			static int ncolors = 0; /* color table size */
56			static COLR colrtbl; / our color table */
57			static int pixval; / associated pixel values */
58
59			static Display ourdisplay = NULL; / our display */
60
61			static Window gwind = 0; /* our graphics window */
62
63			static Cursor pickcursor = 0; /* cursor used for picking */
64
65			static int gwidth = 0; /* graphics window width */
66			static int gheight = 0; /* graphics window height */
67
68			static TEXTWIND comline = NULL; / our command line */
69
70			static char c_queue[64]; /* input queue */
71			static int c_first = 0; /* first character in queue */
72			static int c_last = 0; /* last character in queue */
73
74			extern char *malloc();
75
76			int x_close(), x_clear(), x_paintr(), x_errout(),
77			x_getcur(), x_comout(), x_comin();
78
79			static struct driver x_driver = {
80			x_close, x_clear, x_paintr, x_getcur,
81			x_comout, x_comin,
82			MAXRES, MAXRES
83			};
84
85
86			struct driver *
87			x_init(name) /* initialize driver */
88			char *name;
89			{
90			ourdisplay = XOpenDisplay(NULL);
91			if (ourdisplay == NULL) {
92	greg	1.2	stderr_v("cannot open X-windows; DISPLAY variable set?\n");
93	greg	1.1	return(NULL);
94			}
95			if (DisplayPlanes() < 4) {
96			stderr_v("not enough colors\n");
97			return(NULL);
98			}
99			if (getmap() < 0) /* not fatal */
100			stderr_v("cannot allocate colors\n");
101
102			pickcursor = XCreateCursor(bcross_width, bcross_height,
103			bcross_bits, bcross_mask_bits,
104			bcross_x_hot, bcross_y_hot,
105			BlackPixel, WhitePixel, GXcopy);
106			clientname = name;
107			x_driver.inpready = 0;
108	greg	1.5	cmdvec = x_comout; /* set error vectors */
109	greg	1.1	if (wrnvec != NULL)
110			wrnvec = x_errout;
111			return(&x_driver);
112			}
113
114
115			static
116			x_close() /* close our display */
117			{
118	greg	1.5	cmdvec = NULL; /* reset error vectors */
119	greg	1.1	if (wrnvec != NULL)
120			wrnvec = stderr_v;
121			if (ourdisplay == NULL)
122			return;
123			if (comline != NULL) {
124			xt_close(comline);
125			comline = NULL;
126			}
127			if (gwind != 0) {
128			XDestroyWindow(gwind);
129			gwind = 0;
130			gwidth = gheight = 0;
131			}
132			XFreeCursor(pickcursor);
133			freemap();
134			XCloseDisplay(ourdisplay);
135			ourdisplay = NULL;
136			}
137
138
139			static
140			x_clear(xres, yres) /* clear our display */
141			int xres, yres;
142			{
143			if (xres != gwidth \|\| yres != gheight) { /* new window */
144			if (comline != NULL)
145			xt_close(comline);
146			if (gwind != 0)
147			XDestroyWindow(gwind);
148			gwind = XCreateWindow(RootWindow, 0, BARHEIGHT,
149			xres, yres+COMHEIGHT, BORWIDTH,
150			BlackPixmap, BlackPixmap);
151			if (gwind == 0)
152			goto fail;
153			comline = xt_open(gwind, 0, yres, xres, COMHEIGHT, 0, COMFN);
154			if (comline == NULL)
155			goto fail;
156			XMapWindow(gwind);
157			XSelectInput(gwind,
158			KeyPressed\|ButtonPressed\|ExposeWindow\|ExposeRegion\|UnmapWindow);
159			XStoreName(gwind, clientname);
160			gwidth = xres;
161			gheight = yres;
162			} else /* just clear */
163			XClear(gwind);
164			newmap();
165	greg	1.8	checkinp();
166	greg	1.1	return;
167			fail:
168			stderr_v("Failure opening window in x_clear\n");
169			quit(1);
170			}
171
172
173			static
174			x_paintr(col, xmin, ymin, xmax, ymax) /* fill a rectangle */
175			COLOR col;
176			int xmin, ymin, xmax, ymax;
177			{
178			extern long nrays; /* global ray count */
179			static long lastflush = 0; /* ray count at last flush */
180			int ndx;
181
182			if (ncolors > 0) {
183			if ((ndx = colindex(col)) < 0) {
184			colres >>= 1;
185			redraw();
186			return;
187			}
188			XPixSet(gwind, xmin, gheight-ymax, xmax-xmin, ymax-ymin,
189			pixval[ndx]);
190			}
191			if (nrays - lastflush >= WFLUSH) {
192	greg	1.9	if (ncolors <= 0) /* output necessary for death */
193			XPixSet(gwind,0,0,1,1,BlackPixel);
194	greg	1.8	checkinp();
195	greg	1.1	lastflush = nrays;
196			}
197			}
198
199
200			static
201			x_comin(inp) /* read in a command line */
202			char *inp;
203			{
204			int x_getc(), x_comout();
205
206			xt_cursor(comline, TBLKCURS);
207	greg	1.11	editline(inp, x_getc, x_comout);
208	greg	1.1	xt_cursor(comline, TNOCURS);
209			}
210
211
212			static
213			x_comout(out) /* output a string to command line */
214			char *out;
215			{
216			if (comline != NULL)
217			xt_puts(out, comline);
218	greg	1.8	XFlush();
219	greg	1.1	}
220
221
222			static
223			x_errout(msg) /* output an error message */
224			char *msg;
225			{
226			x_comout(msg);
227			stderr_v(msg); /* send to stderr also! */
228			}
229
230
231			static int
232			x_getcur(xp, yp) /* get cursor position */
233			int xp, yp;
234			{
235			while (XGrabMouse(gwind, pickcursor, ButtonPressed) == 0)
236			sleep(1);
237			XFocusKeyboard(gwind);
238			do
239			getevent();
240			while (c_last <= c_first && levptr(XEvent)->type != ButtonPressed);
241			*xp = levptr(XKeyOrButtonEvent)->x;
242			*yp = gheight-1 - levptr(XKeyOrButtonEvent)->y;
243			XFocusKeyboard(RootWindow);
244			XUngrabMouse();
245	greg	1.8	XFlush(); /* insure release */
246	greg	1.1	if (c_last > c_first) /* key pressed */
247			return(x_getc());
248			/* button pressed */
249			switch (levptr(XKeyOrButtonEvent)->detail & 0377) {
250			case LeftButton:
251			return(MB1);
252			case MiddleButton:
253			return(MB2);
254			case RightButton:
255			return(MB3);
256			}
257			return(ABORT);
258			}
259
260
261			static int
262			colindex(col) /* return index for color */
263			COLOR col;
264			{
265			static COLR clr;
266			int hval;
267			register int ndx, i;
268
269			mapcolor(clr, col);
270
271			hval = ndx = hashcolr(clr);
272
273			for (i = 1; i < ncolors; i++) {
274			if (colrtbl[ndx][EXP] == 0) {
275			colrtbl[ndx][RED] = clr[RED];
276			colrtbl[ndx][GRN] = clr[GRN];
277			colrtbl[ndx][BLU] = clr[BLU];
278			colrtbl[ndx][EXP] = COLXS;
279			newcolr(ndx, clr);
280			return(ndx);
281			}
282			if ( colrtbl[ndx][RED] == clr[RED] &&
283			colrtbl[ndx][GRN] == clr[GRN] &&
284			colrtbl[ndx][BLU] == clr[BLU] )
285			return(ndx);
286			ndx = (hval + i*i) % ncolors;
287			}
288			return(-1);
289			}
290
291
292			static
293			newcolr(ndx, clr) /* enter a color into hardware table */
294			int ndx;
295			COLR clr;
296			{
297			Color xcolor;
298
299			xcolor.pixel = pixval[ndx];
300			xcolor.red = clr[RED] << 8;
301			xcolor.green = clr[GRN] << 8;
302			xcolor.blue = clr[BLU] << 8;
303
304			XStoreColor(&xcolor);
305			}
306
307
308			static
309			mapcolor(clr, col) /* map to our color space */
310			COLR clr;
311			COLOR col;
312			{
313			register int i, p;
314			/* compute color table value */
315			for (i = 0; i < 3; i++) {
316			p = colval(col,i) * 255.0 + 0.5;
317			if (p < 0) p = 0;
318			else if (p > 255) p = 255;
319			clr[i] = colrmap[p][i];
320			}
321			clr[EXP] = COLXS;
322			}
323
324
325			static
326			getmap() /* get the color map */
327			{
328			int planes;
329
330			for (ncolors=(1<<DisplayPlanes())-3; ncolors>12; ncolors=ncolors*.937){
331			colrtbl = (COLR )malloc(ncolorssizeof(COLR));
332			pixval = (int )malloc(ncolorssizeof(int));
333			if (colrtbl == NULL \|\| pixval == NULL)
334			return(-1);
335			if (XGetColorCells(0,ncolors,0,&planes,pixval) != 0)
336			return(0);
337			free((char *)colrtbl);
338			free((char *)pixval);
339			}
340			ncolors = 0;
341			return(-1);
342			}
343
344
345			static
346			freemap() /* free our color map */
347			{
348			if (ncolors == 0)
349			return;
350			XFreeColors(pixval, ncolors, 0);
351			free((char *)colrtbl);
352			free((char *)pixval);
353			ncolors = 0;
354			}
355
356
357			static
358			newmap() /* initialize the color map */
359			{
360			double pow();
361			int val;
362			register int i;
363
364			for (i = 0; i < 256; i++) {
365			val = pow(i/256.0, 1.0/GAMMA) * colres;
366			val = (val*256 + 128) / colres;
367			colrmap[i][RED] = colrmap[i][GRN] = colrmap[i][BLU] = val;
368			colrmap[i][EXP] = COLXS;
369			}
370			for (i = 0; i < ncolors; i++)
371			colrtbl[i][EXP] = 0;
372			}
373
374
375			static int
376			x_getc() /* get a command character */
377			{
378			while (c_last <= c_first) {
379			c_first = c_last = 0; /* reset */
380			getevent(); /* wait for key */
381			}
382			x_driver.inpready--;
383			return(c_queue[c_first++]);
384			}
385
386
387			static
388			getevent() /* get next event */
389			{
390			XNextEvent(levptr(XEvent));
391			switch (levptr(XEvent)->type) {
392			case KeyPressed:
393			getkey(levptr(XKeyPressedEvent));
394			break;
395			case ExposeWindow:
396			if (ncolors == 0 && levptr(XExposeEvent)->subwindow == 0)
397			if (getmap() < 0)
398			stderr_v("cannot grab colors\n");
399			else
400			newmap();
401			/* fall through */
402			case ExposeRegion:
403			fixwindow(levptr(XExposeEvent));
404			break;
405			case UnmapWindow:
406			if (levptr(XUnmapEvent)->subwindow == 0)
407			freemap();
408			break;
409			case ButtonPressed: /* handled in x_getcur() */
410			break;
411			}
412			}
413
414
415			static
416			getkey(ekey) /* get input key */
417			register XKeyPressedEvent *ekey;
418			{
419			int n;
420			register char *str;
421
422			str = XLookupMapping(ekey, &n);
423			while (n-- > 0 && c_last < sizeof(c_queue))
424			c_queue[c_last++] = *str++;
425			x_driver.inpready = c_last - c_first;
426			}
427
428
429			static
430			fixwindow(eexp) /* repair damage to window */
431			register XExposeEvent *eexp;
432			{
433			if (eexp->subwindow == 0)
434			repaint(eexp->x, gheight - eexp->y - eexp->height,
435			eexp->x + eexp->width, gheight - eexp->y);
436			else if (eexp->subwindow == comline->w)
437			xt_redraw(comline);
438			}