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  <math.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           2.2             /* exponent for color correction */

#define BORWIDTH        5               /* border width */
#define COMHEIGHT       (COMLH*COMCH)   /* command line height (pixels) */
#define MINWIDTH        (32*COMCW)      /* minimum graphics window width */
#define MINHEIGHT       MINWIDTH                /* minimum graphics window height */

#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) */

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

static XEvent  thisevent;               /* current event */

static int  ncolors = 0;                /* color table size */
static int  *pixval;                    /* allocated 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, gheight;            /* graphics window size */

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(), *getcombuf();

extern char  *progname;

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

static struct driver  x_driver = {
        x_close, x_clear, x_paintr, x_getcur,
        x_comout, x_comin, x_flush, 1.0
};


struct driver *
x_init(name, id)                /* initialize driver */
char  *name, *id;
{
        extern char  *getenv();
        char  *gv;
        char  defgeom[32];
        OpaqueFrame  mainframe;

        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);
        }
                                /* make color map */
        if ((gv = getenv("GAMMA")) != NULL)
                make_gmap(atof(gv));
        else
                make_gmap(GAMMA);

        pickcursor = XCreateCursor(bcross_width, bcross_height,
                        bcross_bits, bcross_mask_bits,
                        bcross_x_hot, bcross_y_hot,
                        BlackPixel, WhitePixel, GXcopy);
        mainframe.bdrwidth = BORWIDTH;
        mainframe.border = BlackPixmap;
        mainframe.background = BlackPixmap;
        sprintf(defgeom, "=%dx%d+0+22", DisplayWidth()-(2*BORWIDTH),
                        DisplayHeight()-(2*BORWIDTH+22));
        gwind = XCreate("X10 display driver", progname, NULL, defgeom,
                        &mainframe, MINWIDTH, MINHEIGHT+COMHEIGHT);
        if (gwind == 0) {
                stderr_v("can't create window\n");
                return(NULL);
        }
        XStoreName(gwind, id);
        XSelectInput(gwind, KeyPressed|ButtonPressed|
                        ExposeWindow|ExposeRegion|UnmapWindow);
        gwidth = mainframe.width;
        gheight = mainframe.height-COMHEIGHT;
        x_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
        x_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
        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;
        }
        XFreeCursor(pickcursor);
        freepixels();
        XCloseDisplay(ourdisplay);
        ourdisplay = NULL;
}


static
x_clear(xres, yres)                     /* clear our display */
int  xres, yres;
{
        if (xres != gwidth || yres != gheight) {        /* new window */
                XChangeWindow(gwind, xres, yres+COMHEIGHT);
                gwidth = xres;
                gheight = yres;
        } else                                          /* just clear */
                XClear(gwind);
                                                /* reinitialize color table */
        if (getpixels() == 0)
                stderr_v("cannot allocate colors\n");
        else
                new_ctab(ncolors);
                                                /* open new command line */
        if (comline != NULL)
                xt_close(comline);
        comline = xt_open(gwind, 0, yres, xres, COMHEIGHT, 0, COMFN);
        if (comline == NULL) {
                stderr_v("Cannot open command line window\n");
                quit(1);
        }
        XMapWindow(gwind);                      /* make sure it's mapped */
        XSync(1);                               /* discard input */
        return;
}


static
x_paintr(col, xmin, ymin, xmax, ymax)           /* fill a rectangle */
COLOR  col;
int  xmin, ymin, xmax, ymax;
{
        extern int  xnewcolr();         /* pixel assignment routine */

        if (ncolors > 0) {
                XPixSet(gwind, xmin, gheight-ymax, xmax-xmin, ymax-ymin,
                                pixval[get_pixel(col, xnewcolr)]);
        }
}


static
x_flush()                       /* flush output */
{
        if (ncolors <= 0)       /* output necessary for death */
                XPixSet(gwind,0,0,1,1,BlackPixel);
        while (XPending() > 0)
                getevent();

}


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

        if (prompt != NULL)
                if (fromcombuf(inp, &x_driver))
                        return;
                else
                        xt_puts(prompt, comline);
        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)
                return;
        xt_puts(out, comline);
        if (out[strlen(out)-1] == '\n')
                XFlush();
}


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


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
xnewcolr(ndx, r, g, b)          /* enter a color into hardware table */
int  ndx;
int  r, g, b;
{
        Color  xcolor;

        xcolor.pixel = pixval[ndx];
        xcolor.red = r << 8;
        xcolor.green = g << 8;
        xcolor.blue = b << 8;

        XStoreColor(&xcolor);
}


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

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


static
freepixels()                            /* free our pixels */
{
        if (ncolors == 0)
                return;
        XFreeColors(pixval, ncolors, 0);
        free((char *)pixval);
        ncolors = 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:
                windowchange(levptr(XExposeEvent));
                break;
        case ExposeRegion:
                fixwindow(levptr(XExposeEvent));
                break;
        case UnmapWindow:
                if (levptr(XUnmapEvent)->subwindow == 0)
                        freepixels();
                break;
        case ButtonPressed:             /* handled in x_getcur() */
                break;
        }
}


static
windowchange(eexp)                      /* process window change event */
register XExposeEvent  *eexp;
{
        if (eexp->subwindow != 0) {
                fixwindow(eexp);
                return;
        }
                                        /* check for change in size */
        if (eexp->width != gwidth || eexp->height-COMHEIGHT != gheight) {
                gwidth = eexp->width;
                gheight = eexp->height-COMHEIGHT;
                x_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
                x_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
                strcpy(getcombuf(&x_driver), "new\n");
                return;
        }
                                        /* remap colors */
        if (getpixels() == 0) {
                stderr_v("cannot allocate colors\n");
                return;
        }
        new_ctab(ncolors);
                                        /* redraw */
        fixwindow(eexp);
}


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++;
        }
}


static
fixwindow(eexp)                         /* repair damage to window */
register XExposeEvent  *eexp;
{
        if (eexp->subwindow == 0)
                sprintf(getcombuf(&x_driver), "repaint %d %d %d %d\n",
                        eexp->x, gheight - eexp->y - eexp->height,
                        eexp->x + eexp->width, gheight - eexp->y);
        else if (eexp->subwindow == comline->w)
                xt_redraw(comline);
}
Revision:	2.4
Committed:	Fri Sep 9 15:10:25 1994 UTC (30 years, 9 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.3:	+0 -1 lines
Log Message:	removed unneeded reference to ioctl.h
#	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	greg	2.3	#include <math.h>
15	greg	1.1
16			#include <X/Xlib.h>
17			#include <X/cursors/bcross.cursor>
18			#include <X/cursors/bcross_mask.cursor>
19
20			#include "color.h"
21
22			#include "driver.h"
23
24			#include "xtwind.h"
25
26	greg	1.12	#define GAMMA 2.2 /* exponent for color correction */
27	greg	1.1
28			#define BORWIDTH 5 /* border width */
29			#define COMHEIGHT (COMLHCOMCH) / command line height (pixels) */
30	greg	1.18	#define MINWIDTH (32COMCW) / minimum graphics window width */
31	greg	1.26	#define MINHEIGHT MINWIDTH /* minimum graphics window height */
32	greg	1.1
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			#define levptr(etype) ((etype *)&thisevent)
39
40			static XEvent thisevent; /* current event */
41
42			static int ncolors = 0; /* color table size */
43	greg	1.12	static int pixval; / allocated pixel values */
44	greg	1.1
45			static Display ourdisplay = NULL; / our display */
46
47			static Window gwind = 0; /* our graphics window */
48
49			static Cursor pickcursor = 0; /* cursor used for picking */
50
51	greg	1.24	static int gwidth, gheight; /* graphics window size */
52	greg	1.1
53			static TEXTWIND comline = NULL; / our command line */
54
55			static char c_queue[64]; /* input queue */
56			static int c_first = 0; /* first character in queue */
57			static int c_last = 0; /* last character in queue */
58
59	greg	1.18	extern char malloc(), getcombuf();
60	greg	1.1
61	greg	1.21	extern char *progname;
62
63	greg	1.28	static int x_close(), x_clear(), x_paintr(), x_errout(),
64	greg	1.25	x_getcur(), x_comout(), x_comin(), x_flush();
65	greg	1.1
66			static struct driver x_driver = {
67			x_close, x_clear, x_paintr, x_getcur,
68	greg	1.25	x_comout, x_comin, x_flush, 1.0
69	greg	1.1	};
70
71
72			struct driver *
73	greg	1.16	x_init(name, id) /* initialize driver */
74			char name, id;
75	greg	1.1	{
76	greg	2.2	extern char *getenv();
77			char *gv;
78	greg	1.19	char defgeom[32];
79			OpaqueFrame mainframe;
80
81	greg	1.1	ourdisplay = XOpenDisplay(NULL);
82			if (ourdisplay == NULL) {
83	greg	1.2	stderr_v("cannot open X-windows; DISPLAY variable set?\n");
84	greg	1.1	return(NULL);
85			}
86			if (DisplayPlanes() < 4) {
87			stderr_v("not enough colors\n");
88			return(NULL);
89			}
90	greg	2.2	/* make color map */
91			if ((gv = getenv("GAMMA")) != NULL)
92			make_gmap(atof(gv));
93			else
94			make_gmap(GAMMA);
95	greg	1.1
96			pickcursor = XCreateCursor(bcross_width, bcross_height,
97			bcross_bits, bcross_mask_bits,
98			bcross_x_hot, bcross_y_hot,
99			BlackPixel, WhitePixel, GXcopy);
100	greg	1.19	mainframe.bdrwidth = BORWIDTH;
101			mainframe.border = BlackPixmap;
102			mainframe.background = BlackPixmap;
103			sprintf(defgeom, "=%dx%d+0+22", DisplayWidth()-(2*BORWIDTH),
104			DisplayHeight()-(2*BORWIDTH+22));
105	greg	1.21	gwind = XCreate("X10 display driver", progname, NULL, defgeom,
106	greg	1.19	&mainframe, MINWIDTH, MINHEIGHT+COMHEIGHT);
107			if (gwind == 0) {
108			stderr_v("can't create window\n");
109			return(NULL);
110			}
111			XStoreName(gwind, id);
112			XSelectInput(gwind, KeyPressed\|ButtonPressed\|
113			ExposeWindow\|ExposeRegion\|UnmapWindow);
114	greg	1.24	gwidth = mainframe.width;
115			gheight = mainframe.height-COMHEIGHT;
116			x_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
117			x_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
118	greg	1.1	x_driver.inpready = 0;
119	greg	1.5	cmdvec = x_comout; /* set error vectors */
120	greg	1.1	if (wrnvec != NULL)
121			wrnvec = x_errout;
122			return(&x_driver);
123			}
124
125
126			static
127			x_close() /* close our display */
128			{
129	greg	1.5	cmdvec = NULL; /* reset error vectors */
130	greg	1.1	if (wrnvec != NULL)
131			wrnvec = stderr_v;
132			if (ourdisplay == NULL)
133			return;
134			if (comline != NULL) {
135			xt_close(comline);
136			comline = NULL;
137			}
138			if (gwind != 0) {
139			XDestroyWindow(gwind);
140			gwind = 0;
141			}
142			XFreeCursor(pickcursor);
143	greg	1.12	freepixels();
144	greg	1.1	XCloseDisplay(ourdisplay);
145			ourdisplay = NULL;
146			}
147
148
149			static
150			x_clear(xres, yres) /* clear our display */
151			int xres, yres;
152			{
153			if (xres != gwidth \|\| yres != gheight) { /* new window */
154	greg	1.19	XChangeWindow(gwind, xres, yres+COMHEIGHT);
155	greg	1.1	gwidth = xres;
156			gheight = yres;
157			} else /* just clear */
158			XClear(gwind);
159	greg	1.17	/* reinitialize color table */
160	greg	1.22	if (getpixels() == 0)
161	greg	1.17	stderr_v("cannot allocate colors\n");
162			else
163			new_ctab(ncolors);
164	greg	1.29	/* open new command line */
165			if (comline != NULL)
166			xt_close(comline);
167			comline = xt_open(gwind, 0, yres, xres, COMHEIGHT, 0, COMFN);
168			if (comline == NULL) {
169			stderr_v("Cannot open command line window\n");
170			quit(1);
171			}
172	greg	1.24	XMapWindow(gwind); /* make sure it's mapped */
173	greg	1.17	XSync(1); /* discard input */
174	greg	1.1	return;
175			}
176
177
178			static
179			x_paintr(col, xmin, ymin, xmax, ymax) /* fill a rectangle */
180			COLOR col;
181			int xmin, ymin, xmax, ymax;
182			{
183	greg	1.14	extern int xnewcolr(); /* pixel assignment routine */
184	greg	1.1
185			if (ncolors > 0) {
186			XPixSet(gwind, xmin, gheight-ymax, xmax-xmin, ymax-ymin,
187	greg	1.14	pixval[get_pixel(col, xnewcolr)]);
188	greg	1.1	}
189	greg	1.25	}
190
191
192			static
193			x_flush() /* flush output */
194			{
195			if (ncolors <= 0) /* output necessary for death */
196			XPixSet(gwind,0,0,1,1,BlackPixel);
197			while (XPending() > 0)
198			getevent();
199
200	greg	1.1	}
201
202
203			static
204	greg	1.23	x_comin(inp, prompt) /* read in a command line */
205			char inp, prompt;
206	greg	1.1	{
207	greg	1.28	extern int x_getc();
208	greg	1.1
209	greg	1.23	if (prompt != NULL)
210			if (fromcombuf(inp, &x_driver))
211			return;
212			else
213			xt_puts(prompt, comline);
214	greg	1.1	xt_cursor(comline, TBLKCURS);
215	greg	1.11	editline(inp, x_getc, x_comout);
216	greg	1.1	xt_cursor(comline, TNOCURS);
217			}
218
219
220			static
221			x_comout(out) /* output a string to command line */
222			char *out;
223			{
224	greg	1.27	if (comline == NULL)
225			return;
226			xt_puts(out, comline);
227			if (out[strlen(out)-1] == '\n')
228			XFlush();
229	greg	1.1	}
230
231
232			static
233			x_errout(msg) /* output an error message */
234			char *msg;
235			{
236	greg	1.27	stderr_v(msg); /* send to stderr also! */
237	greg	1.1	x_comout(msg);
238			}
239
240
241			static int
242			x_getcur(xp, yp) /* get cursor position */
243			int xp, yp;
244			{
245			while (XGrabMouse(gwind, pickcursor, ButtonPressed) == 0)
246			sleep(1);
247			XFocusKeyboard(gwind);
248			do
249			getevent();
250			while (c_last <= c_first && levptr(XEvent)->type != ButtonPressed);
251			*xp = levptr(XKeyOrButtonEvent)->x;
252			*yp = gheight-1 - levptr(XKeyOrButtonEvent)->y;
253			XFocusKeyboard(RootWindow);
254			XUngrabMouse();
255	greg	1.8	XFlush(); /* insure release */
256	greg	1.1	if (c_last > c_first) /* key pressed */
257			return(x_getc());
258			/* button pressed */
259			switch (levptr(XKeyOrButtonEvent)->detail & 0377) {
260			case LeftButton:
261			return(MB1);
262			case MiddleButton:
263			return(MB2);
264			case RightButton:
265			return(MB3);
266			}
267			return(ABORT);
268			}
269
270
271			static
272	greg	1.13	xnewcolr(ndx, r, g, b) /* enter a color into hardware table */
273	greg	1.1	int ndx;
274	greg	1.13	int r, g, b;
275	greg	1.1	{
276			Color xcolor;
277
278			xcolor.pixel = pixval[ndx];
279	greg	1.13	xcolor.red = r << 8;
280			xcolor.green = g << 8;
281			xcolor.blue = b << 8;
282	greg	1.1
283			XStoreColor(&xcolor);
284			}
285
286
287	greg	1.17	static int
288	greg	1.12	getpixels() /* get the color map */
289	greg	1.1	{
290			int planes;
291
292	greg	1.22	if (ncolors > 0)
293			return(ncolors);
294	greg	1.1	for (ncolors=(1<<DisplayPlanes())-3; ncolors>12; ncolors=ncolors*.937){
295			pixval = (int )malloc(ncolorssizeof(int));
296	greg	1.12	if (pixval == NULL)
297			break;
298	greg	1.1	if (XGetColorCells(0,ncolors,0,&planes,pixval) != 0)
299	greg	1.17	return(ncolors);
300	greg	1.1	free((char *)pixval);
301			}
302	greg	1.17	return(ncolors = 0);
303	greg	1.1	}
304
305
306			static
307	greg	1.12	freepixels() /* free our pixels */
308	greg	1.1	{
309			if (ncolors == 0)
310			return;
311			XFreeColors(pixval, ncolors, 0);
312			free((char *)pixval);
313			ncolors = 0;
314			}
315
316
317			static int
318			x_getc() /* get a command character */
319			{
320			while (c_last <= c_first) {
321			c_first = c_last = 0; /* reset */
322			getevent(); /* wait for key */
323			}
324			x_driver.inpready--;
325			return(c_queue[c_first++]);
326			}
327
328
329			static
330			getevent() /* get next event */
331			{
332			XNextEvent(levptr(XEvent));
333			switch (levptr(XEvent)->type) {
334			case KeyPressed:
335			getkey(levptr(XKeyPressedEvent));
336			break;
337			case ExposeWindow:
338	greg	1.18	windowchange(levptr(XExposeEvent));
339			break;
340	greg	1.1	case ExposeRegion:
341			fixwindow(levptr(XExposeEvent));
342			break;
343			case UnmapWindow:
344			if (levptr(XUnmapEvent)->subwindow == 0)
345	greg	1.12	freepixels();
346	greg	1.1	break;
347			case ButtonPressed: /* handled in x_getcur() */
348			break;
349			}
350			}
351
352
353			static
354	greg	1.18	windowchange(eexp) /* process window change event */
355			register XExposeEvent *eexp;
356			{
357			if (eexp->subwindow != 0) {
358			fixwindow(eexp);
359			return;
360			}
361			/* check for change in size */
362	greg	1.19	if (eexp->width != gwidth \|\| eexp->height-COMHEIGHT != gheight) {
363	greg	1.24	gwidth = eexp->width;
364			gheight = eexp->height-COMHEIGHT;
365			x_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
366			x_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
367	greg	1.18	strcpy(getcombuf(&x_driver), "new\n");
368			return;
369			}
370			/* remap colors */
371	greg	1.22	if (getpixels() == 0) {
372	greg	1.18	stderr_v("cannot allocate colors\n");
373			return;
374			}
375			new_ctab(ncolors);
376			/* redraw */
377			fixwindow(eexp);
378			}
379
380
381			static
382	greg	1.1	getkey(ekey) /* get input key */
383			register XKeyPressedEvent *ekey;
384			{
385			int n;
386			register char *str;
387
388			str = XLookupMapping(ekey, &n);
389	greg	1.20	while (n-- > 0 && c_last < sizeof(c_queue)) {
390	greg	1.1	c_queue[c_last++] = *str++;
391	greg	1.20	x_driver.inpready++;
392			}
393	greg	1.1	}
394
395
396			static
397			fixwindow(eexp) /* repair damage to window */
398			register XExposeEvent *eexp;
399			{
400			if (eexp->subwindow == 0)
401	greg	1.18	sprintf(getcombuf(&x_driver), "repaint %d %d %d %d\n",
402			eexp->x, gheight - eexp->y - eexp->height,
403	greg	1.1	eexp->x + eexp->width, gheight - eexp->y);
404			else if (eexp->subwindow == comline->w)
405			xt_redraw(comline);
406			}