src/rt/aed.c

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

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

/*
 *  aed.c - driver for AED 512 terminal.
 *
 *     2/2/87
 */

#include  <stdio.h>

#include  "driver.h"

#include  "color.h"


        /* AED command characters */

#define AEDFMT  "1888N" /* Format string to send to AED */
#define CSTAT   0100    /* Console status: lower case */
#define SCT     75      /* Set color lookup table */
#define SEC     67      /* Set color for vector drawing */
#define MOV     81      /* Set CAP (current access pointer) to x, y */
#define OPT     40      /* Miscellaneous terminal control */
#define SEN     71      /* Set encoding types */
#define RST     48      /* Reset terminal */
#define FFD     12      /* Clear screen */
#define EJC     85      /* Enable Joystick cursor positioning */
#define DJC     100     /* Disable Joystick cursor positioning */
#define SCC     99      /* Set Cursor Colors */
#define SCP     93      /* Set Cursor Parameters */
#define DFR     111     /* Draw Filled Rectangle */
#define RCP     106     /* Read Cursor Position */
#define ESC     27      /* Escape starts a command sequence */
#define SCS     96      /* Set Console Status */
#define END     1       /* Ctrl-A used to terminate command mode */

#define BLK     0       /* color table entry for black */
#define WHT     7       /* color table entry for white */

#define command(c)      (putc(ESC, stdout), putc(c, stdout))
#define byte(b)         putc(b, stdout)
#define string(s)       fputs(s, stdout)
#define flush()         fflush(stdout)

#define  GAMMA          2.5             /* exponent for color correction */

#define  NCOLORS        248             /* our color table size */
#define  MINPIX         8               /* minimum hardware color */

#define  NCOLS          512             /* maximum # columns for output */
#define  NROWS          512-COMHT       /* maximum # rows for output */
#define  COMHT          16              /* height of command line */
#define  COMCW          63              /* maximum chars on command line */

int  anewcolr();

int  aed_close(), aed_clear(), aed_paintr(),
                aed_getcur(), aed_comout(), aed_errout();

static struct driver  aed_driver = {
        aed_close, aed_clear, aed_paintr, aed_getcur,
        aed_comout, NULL,
        NCOLS, NROWS
};


struct driver *
aed_init(name)                          /* open AED */
char  *name;
{
        if (ttyset(&aed_driver, fileno(stdin)) < 0) {   /* set tty driver */
                stderr_v("cannot access terminal\n");
                return(NULL);
        }
        command(RST);                                   /* reset AED */
        longwait(2);
        command(OPT);
        byte(6); byte(1);                               /* AED command set */
        command(SEN);
        string(AEDFMT);
        command(SCS);                                   /* set console status */
        byte(CSTAT);
        command(SCC);                                   /* set cursor type */
        byte(BLK); byte(WHT); byte(15);
        command(SCP);
        byte('+'); byte(0); byte(1);
        make_cmap(GAMMA);                               /* make color map */
        errvec = aed_errout;                            /* set error vector */
        cmdvec = aed_errout;
        if (wrnvec != NULL)
                wrnvec = aed_errout;
        return(&aed_driver);
}


static
aed_close()                                     /* close AED */
{
        errvec = stderr_v;                      /* reset error vector */
        cmdvec = NULL;
        if (wrnvec != NULL)
                wrnvec = stderr_v;
        aedsetcap(0, 0);                        /* go to bottom */
        command(SEC);
        byte(WHT);                              /* white text */
        byte(END);
        byte('\n');                             /* scroll */
        flush();
        ttydone();
}


static
aed_clear(x, y)                                 /* clear AED */
int  x, y;
{
        command(FFD);
        new_ctab(NCOLORS, anewcolr);            /* init color table */
        flush();
}


static
aed_paintr(col, xmin, ymin, xmax, ymax)         /* paint a rectangle */
COLOR  col;
int  xmin, ymin, xmax, ymax;
{
        int  ndx;

        ndx = get_pixel(col);                   /* may call anewcolr() */
        command(SEC);                           /* draw rectangle */
        byte(ndx+MINPIX);
        aedsetcap(xmin, ymin+COMHT);
        command(DFR);
        aedcoord(xmax-1, ymax+(-1+COMHT));
        flush();
}


static int
aed_getcur(xp, yp)                      /* get cursor position */
int  *xp, *yp;
{
        int  com;

        command(EJC);                   /* enable cursor */
        com = getch();                  /* get key */
        command(DJC);                   /* disable cursor */
        aedgetcap(xp, yp);              /* get cursor position */
        *yp -= COMHT;                   /* convert coordinates */
        return(com);                    /* return key hit */
}


static
aed_comout(out)                         /* output to command line */
register char  *out;
{
        static int  newl = 1;
        static int  inmsg = 0;

        while (*out) {
                if (newl) {                     /* new line */
                        command(SEC);
                        byte(BLK);
                        aedsetcap(0, 0);
                        command(DFR);
                        aedcoord(NCOLS-1, COMHT-1);
                        aedsetcap(1, 4);
                        command(SEC);           /* white text */
                        byte(WHT);
                        byte(END);
                        newl = 0;
                }
                switch (*out) {
                case '\n':                      /* end of line */
                        newl = 1;
                /* fall through */
                case '\r':
                        inmsg = 0;
                        byte('\r');
                        break;
                case '\b':                      /* back space */
                        if (inmsg > 0 && --inmsg < COMCW)
                                byte('\b');
                        break;
                default:                        /* character */
                        if (inmsg++ < COMCW)
                                byte(*out);
                        break;
                }
                out++;
        }
        flush();
}


static
aed_errout(msg)                         /* print an error message */
char  *msg;
{
        aed_comout(msg);
        if (*msg && msg[strlen(msg)-1] == '\n')
                longwait(2);
}


/*
 * aedsetcap - sets AED's current access pointer to (x, y).
 */

static
aedsetcap(x, y)
register int  x, y;
{
        command(MOV);
        aedcoord(x, y);
}

/*
 * aedcoord - puts out an (x, y) coordinate in AED 8 bit format.
 */

static
aedcoord(x, y)
register int  x, y;
{
        byte(((x >> 4) & 0x30) | ((y >> 8) & 0x3));
        byte(x & 0xff);
        byte(y & 0xff);
}


static
aedgetcap(xp, yp)               /* get cursor postion */
int  *xp, *yp;
{
        register int  c;
                                /* get cursor postition */
        command(RCP);
        flush();
        c = getch();
        *xp = (c & 0x30) << 4;
        *yp = (c & 0x3) << 8;
        *xp |= getch();
        *yp |= getch();
}


static
anewcolr(index, r, g, b)                /* enter a color into our table */
int  index;
int  r, g, b;
{
        command(SCT);
        byte((index+MINPIX)&255);
        byte(1);
        byte(r);
        byte(g);
        byte(b);
        flush();
}


static
longwait(t)             /* longer wait */
int  t;
{
        flush();
        sleep(t);
}
Revision:	1.3
Committed:	Tue Oct 3 11:10:02 1989 UTC (34 years, 7 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+20 -25 lines
Log Message:	Improved color table allocation, second cut.
#	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			* aed.c - driver for AED 512 terminal.
9			*
10			* 2/2/87
11			*/
12
13			#include <stdio.h>
14
15			#include "driver.h"
16
17			#include "color.h"
18
19
20			/* AED command characters */
21
22			#define AEDFMT "1888N" /* Format string to send to AED */
23			#define CSTAT 0100 /* Console status: lower case */
24			#define SCT 75 /* Set color lookup table */
25			#define SEC 67 /* Set color for vector drawing */
26			#define MOV 81 /* Set CAP (current access pointer) to x, y */
27			#define OPT 40 /* Miscellaneous terminal control */
28			#define SEN 71 /* Set encoding types */
29			#define RST 48 /* Reset terminal */
30			#define FFD 12 /* Clear screen */
31			#define EJC 85 /* Enable Joystick cursor positioning */
32			#define DJC 100 /* Disable Joystick cursor positioning */
33			#define SCC 99 /* Set Cursor Colors */
34			#define SCP 93 /* Set Cursor Parameters */
35			#define DFR 111 /* Draw Filled Rectangle */
36			#define RCP 106 /* Read Cursor Position */
37			#define ESC 27 /* Escape starts a command sequence */
38			#define SCS 96 /* Set Console Status */
39			#define END 1 /* Ctrl-A used to terminate command mode */
40
41			#define BLK 0 /* color table entry for black */
42			#define WHT 7 /* color table entry for white */
43
44			#define command(c) (putc(ESC, stdout), putc(c, stdout))
45			#define byte(b) putc(b, stdout)
46			#define string(s) fputs(s, stdout)
47			#define flush() fflush(stdout)
48
49	greg	1.3	#define GAMMA 2.5 /* exponent for color correction */
50	greg	1.1
51	greg	1.3	#define NCOLORS 248 /* our color table size */
52	greg	1.2	#define MINPIX 8 /* minimum hardware color */
53	greg	1.1
54			#define NCOLS 512 /* maximum # columns for output */
55			#define NROWS 512-COMHT /* maximum # rows for output */
56			#define COMHT 16 /* height of command line */
57			#define COMCW 63 /* maximum chars on command line */
58
59	greg	1.3	int anewcolr();
60	greg	1.1
61			int aed_close(), aed_clear(), aed_paintr(),
62			aed_getcur(), aed_comout(), aed_errout();
63
64			static struct driver aed_driver = {
65			aed_close, aed_clear, aed_paintr, aed_getcur,
66			aed_comout, NULL,
67			NCOLS, NROWS
68			};
69
70
71			struct driver *
72			aed_init(name) /* open AED */
73			char *name;
74			{
75			if (ttyset(&aed_driver, fileno(stdin)) < 0) { /* set tty driver */
76			stderr_v("cannot access terminal\n");
77			return(NULL);
78			}
79			command(RST); /* reset AED */
80			longwait(2);
81			command(OPT);
82			byte(6); byte(1); /* AED command set */
83			command(SEN);
84			string(AEDFMT);
85			command(SCS); /* set console status */
86			byte(CSTAT);
87			command(SCC); /* set cursor type */
88			byte(BLK); byte(WHT); byte(15);
89			command(SCP);
90			byte('+'); byte(0); byte(1);
91	greg	1.2	make_cmap(GAMMA); /* make color map */
92	greg	1.1	errvec = aed_errout; /* set error vector */
93			cmdvec = aed_errout;
94			if (wrnvec != NULL)
95			wrnvec = aed_errout;
96			return(&aed_driver);
97			}
98
99
100			static
101			aed_close() /* close AED */
102			{
103			errvec = stderr_v; /* reset error vector */
104			cmdvec = NULL;
105			if (wrnvec != NULL)
106			wrnvec = stderr_v;
107			aedsetcap(0, 0); /* go to bottom */
108			command(SEC);
109			byte(WHT); /* white text */
110			byte(END);
111			byte('\n'); /* scroll */
112			flush();
113			ttydone();
114			}
115
116
117			static
118			aed_clear(x, y) /* clear AED */
119			int x, y;
120			{
121			command(FFD);
122	greg	1.3	new_ctab(NCOLORS, anewcolr); /* init color table */
123			flush();
124	greg	1.1	}
125
126
127			static
128			aed_paintr(col, xmin, ymin, xmax, ymax) /* paint a rectangle */
129			COLOR col;
130			int xmin, ymin, xmax, ymax;
131			{
132	greg	1.3	int ndx;
133
134			ndx = get_pixel(col); /* may call anewcolr() */
135			command(SEC); /* draw rectangle */
136			byte(ndx+MINPIX);
137	greg	1.1	aedsetcap(xmin, ymin+COMHT);
138			command(DFR);
139			aedcoord(xmax-1, ymax+(-1+COMHT));
140			flush();
141			}
142
143
144			static int
145			aed_getcur(xp, yp) /* get cursor position */
146			int xp, yp;
147			{
148			int com;
149
150			command(EJC); /* enable cursor */
151			com = getch(); /* get key */
152			command(DJC); /* disable cursor */
153			aedgetcap(xp, yp); /* get cursor position */
154			yp -= COMHT; / convert coordinates */
155			return(com); /* return key hit */
156			}
157
158
159			static
160			aed_comout(out) /* output to command line */
161			register char *out;
162			{
163			static int newl = 1;
164			static int inmsg = 0;
165
166			while (*out) {
167			if (newl) { /* new line */
168			command(SEC);
169			byte(BLK);
170			aedsetcap(0, 0);
171			command(DFR);
172			aedcoord(NCOLS-1, COMHT-1);
173			aedsetcap(1, 4);
174			command(SEC); /* white text */
175			byte(WHT);
176			byte(END);
177			newl = 0;
178			}
179			switch (*out) {
180			case '\n': /* end of line */
181			newl = 1;
182			/* fall through */
183			case '\r':
184			inmsg = 0;
185			byte('\r');
186			break;
187			case '\b': /* back space */
188			if (inmsg > 0 && --inmsg < COMCW)
189			byte('\b');
190			break;
191			default: /* character */
192			if (inmsg++ < COMCW)
193			byte(*out);
194			break;
195			}
196			out++;
197			}
198			flush();
199			}
200
201
202			static
203			aed_errout(msg) /* print an error message */
204			char *msg;
205			{
206			aed_comout(msg);
207			if (*msg && msg[strlen(msg)-1] == '\n')
208			longwait(2);
209			}
210
211
212			/*
213			* aedsetcap - sets AED's current access pointer to (x, y).
214			*/
215
216			static
217			aedsetcap(x, y)
218			register int x, y;
219			{
220			command(MOV);
221			aedcoord(x, y);
222			}
223
224			/*
225			* aedcoord - puts out an (x, y) coordinate in AED 8 bit format.
226			*/
227
228			static
229			aedcoord(x, y)
230			register int x, y;
231			{
232			byte(((x >> 4) & 0x30) \| ((y >> 8) & 0x3));
233			byte(x & 0xff);
234			byte(y & 0xff);
235			}
236
237
238			static
239			aedgetcap(xp, yp) /* get cursor postion */
240			int xp, yp;
241			{
242			register int c;
243			/* get cursor postition */
244			command(RCP);
245			flush();
246			c = getch();
247			*xp = (c & 0x30) << 4;
248			*yp = (c & 0x3) << 8;
249			*xp \|= getch();
250			*yp \|= getch();
251			}
252
253
254			static
255	greg	1.3	anewcolr(index, r, g, b) /* enter a color into our table */
256			int index;
257			int r, g, b;
258	greg	1.1	{
259	greg	1.3	command(SCT);
260			byte((index+MINPIX)&255);
261			byte(1);
262			byte(r);
263			byte(g);
264			byte(b);
265			flush();
266	greg	1.1	}
267
268
269			static
270			longwait(t) /* longer wait */
271			int t;
272			{
273			flush();
274			sleep(t);
275			}