| 1 |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* psign.c - produce picture from text. |
| 9 |
* |
| 10 |
* 7/1/87 |
| 11 |
*/ |
| 12 |
|
| 13 |
#include <stdio.h> |
| 14 |
|
| 15 |
#include "color.h" |
| 16 |
|
| 17 |
#define MAXLINE 512 /* longest allowable line */ |
| 18 |
|
| 19 |
char *fontfile = "helvet.fnt"; /* our font file */ |
| 20 |
|
| 21 |
COLR bgcolr = WHTCOLR; /* background color */ |
| 22 |
COLR fgcolr = BLKCOLR; /* foreground color */ |
| 23 |
|
| 24 |
int direct = 'r'; /* direction (right, up, left, down) */ |
| 25 |
|
| 26 |
int cheight = 32; /* character height */ |
| 27 |
double aspect = 1.67; /* height/width character aspect */ |
| 28 |
int cwidth; /* computed character width */ |
| 29 |
|
| 30 |
unsigned char *ourbitmap; /* our output bitmap */ |
| 31 |
int xsiz, ysiz; /* bitmap dimensions */ |
| 32 |
int xdim; /* size of horizontal scan (bytes) */ |
| 33 |
|
| 34 |
#define bitop(x,y,op) (ourbitmap[(y)*xdim+((x)>>3)] op (1<<((x)&7))) |
| 35 |
#define tstbit(x,y) bitop(x,y,&) |
| 36 |
#define setbit(x,y) bitop(x,y,|=) |
| 37 |
#define clrbit(x,y) bitop(x,y,&=~) |
| 38 |
#define tglbit(x,y) bitop(x,y,^=) |
| 39 |
|
| 40 |
typedef unsigned char GLYPH; |
| 41 |
|
| 42 |
GLYPH *ourfont[128]; /* our font */ |
| 43 |
|
| 44 |
typedef struct line { |
| 45 |
char *s; /* line w/o LF */ |
| 46 |
struct line *next; /* next line up */ |
| 47 |
} LINE; |
| 48 |
|
| 49 |
LINE *ourtext; /* our text */ |
| 50 |
int nlines, maxline; /* text dimensions */ |
| 51 |
|
| 52 |
extern char *malloc(), *calloc(); |
| 53 |
extern FILE *fropen(); |
| 54 |
|
| 55 |
|
| 56 |
main(argc, argv) |
| 57 |
int argc; |
| 58 |
char *argv[]; |
| 59 |
{ |
| 60 |
int an; |
| 61 |
|
| 62 |
for (an = 1; an < argc && argv[an][0] == '-'; an++) |
| 63 |
switch (argv[an][1]) { |
| 64 |
case 'c': /* color */ |
| 65 |
switch (argv[an][2]) { |
| 66 |
case 'f': /* foreground */ |
| 67 |
setcolr(fgcolr, atof(argv[an+1]), |
| 68 |
atof(argv[an+2]), |
| 69 |
atof(argv[an+3])); |
| 70 |
an += 3; |
| 71 |
break; |
| 72 |
case 'b': /* background */ |
| 73 |
setcolr(bgcolr, atof(argv[an+1]), |
| 74 |
atof(argv[an+2]), |
| 75 |
atof(argv[an+3])); |
| 76 |
an += 3; |
| 77 |
break; |
| 78 |
default: |
| 79 |
goto unkopt; |
| 80 |
} |
| 81 |
break; |
| 82 |
case 'f': /* font */ |
| 83 |
fontfile = argv[++an]; |
| 84 |
break; |
| 85 |
case 'd': /* direction */ |
| 86 |
switch (argv[an][2]) { |
| 87 |
case 'r': /* right */ |
| 88 |
case 'u': /* up */ |
| 89 |
case 'l': /* left */ |
| 90 |
case 'd': /* down */ |
| 91 |
direct = argv[an][2]; |
| 92 |
break; |
| 93 |
default: |
| 94 |
goto unkopt; |
| 95 |
} |
| 96 |
break; |
| 97 |
case 'h': /* height of characters */ |
| 98 |
cheight = atoi(argv[++an]); |
| 99 |
break; |
| 100 |
case 'a': /* aspect ratio */ |
| 101 |
aspect = atof(argv[++an]); |
| 102 |
break; |
| 103 |
default:; |
| 104 |
unkopt: |
| 105 |
fprintf(stderr, "%s: unknown option: %s\n", |
| 106 |
argv[0], argv[an]); |
| 107 |
exit(1); |
| 108 |
} |
| 109 |
/* get text */ |
| 110 |
if (an == argc) |
| 111 |
gettext(stdin); |
| 112 |
else |
| 113 |
arg_text(argc-an, argv+an); |
| 114 |
|
| 115 |
/* create bit map */ |
| 116 |
makemap(); |
| 117 |
/* load font file */ |
| 118 |
loadfont(); |
| 119 |
/* convert text to bitmap */ |
| 120 |
maptext(); |
| 121 |
/* print header */ |
| 122 |
printargs(argc, argv, stdout); |
| 123 |
fputformat(COLRFMT, stdout); |
| 124 |
putchar('\n'); |
| 125 |
/* write out bitmap */ |
| 126 |
writemap(stdout); |
| 127 |
|
| 128 |
exit(0); |
| 129 |
} |
| 130 |
|
| 131 |
|
| 132 |
makemap() /* create the bit map */ |
| 133 |
{ |
| 134 |
cwidth = cheight/aspect + 0.5; |
| 135 |
if (direct == 'r' || direct == 'l') { |
| 136 |
xsiz = maxline*cwidth; |
| 137 |
ysiz = nlines*cheight; |
| 138 |
} else { /* reverse orientation */ |
| 139 |
xsiz = nlines*cheight; |
| 140 |
ysiz = maxline*cwidth; |
| 141 |
} |
| 142 |
xdim = (xsiz+7)/8; |
| 143 |
ourbitmap = (BYTE *)calloc(ysiz, xdim); |
| 144 |
if (ourbitmap == NULL) { |
| 145 |
fprintf(stderr, "out of memory in makemap\n"); |
| 146 |
exit(1); |
| 147 |
} |
| 148 |
} |
| 149 |
|
| 150 |
|
| 151 |
loadfont() /* load the font file */ |
| 152 |
{ |
| 153 |
FILE *fp; |
| 154 |
char *err; |
| 155 |
int gn, ngv, gv; |
| 156 |
register GLYPH *g; |
| 157 |
|
| 158 |
if ((fp = fropen(fontfile)) == NULL) { |
| 159 |
fprintf(stderr, "cannot find font file \"%s\"\n", |
| 160 |
fontfile); |
| 161 |
exit(1); |
| 162 |
} |
| 163 |
while (fscanf(fp, "%d", &gn) == 1) { /* get each glyph */ |
| 164 |
if (gn < 0 || gn > 127) { |
| 165 |
err = "illegal"; |
| 166 |
goto fonterr; |
| 167 |
} |
| 168 |
if (ourfont[gn] != NULL) { |
| 169 |
err = "duplicate"; |
| 170 |
goto fonterr; |
| 171 |
} |
| 172 |
if (fscanf(fp, "%d", &ngv) != 1 || |
| 173 |
ngv < 0 || ngv > 255) { |
| 174 |
err = "bad # vertices for"; |
| 175 |
goto fonterr; |
| 176 |
} |
| 177 |
g = (GLYPH *)malloc((2*ngv+1)*sizeof(GLYPH)); |
| 178 |
if (g == NULL) |
| 179 |
goto memerr; |
| 180 |
ourfont[gn] = g; |
| 181 |
*g++ = ngv; |
| 182 |
ngv *= 2; |
| 183 |
while (ngv--) { |
| 184 |
if (fscanf(fp, "%d", &gv) != 1 || |
| 185 |
gv < 0 || gv > 255) { |
| 186 |
err = "bad vertex for"; |
| 187 |
goto fonterr; |
| 188 |
} |
| 189 |
*g++ = gv; |
| 190 |
} |
| 191 |
} |
| 192 |
fclose(fp); |
| 193 |
return; |
| 194 |
fonterr: |
| 195 |
fprintf(stderr, "%s character (%d) in font file \"%s\"\n", |
| 196 |
err, gn, fontfile); |
| 197 |
exit(1); |
| 198 |
memerr: |
| 199 |
fprintf(stderr, "out of memory in loadfont\n"); |
| 200 |
exit(1); |
| 201 |
} |
| 202 |
|
| 203 |
|
| 204 |
gettext(fp) /* get text from a file */ |
| 205 |
FILE *fp; |
| 206 |
{ |
| 207 |
char *fgets(); |
| 208 |
char buf[MAXLINE]; |
| 209 |
register LINE *curl; |
| 210 |
int len; |
| 211 |
|
| 212 |
maxline = 0; |
| 213 |
nlines = 0; |
| 214 |
while (fgets(buf, MAXLINE, fp) != NULL) { |
| 215 |
curl = (LINE *)malloc(sizeof(LINE)); |
| 216 |
if (curl == NULL) |
| 217 |
goto memerr; |
| 218 |
len = strlen(buf); |
| 219 |
curl->s = malloc(len--); |
| 220 |
if (curl->s == NULL) |
| 221 |
goto memerr; |
| 222 |
strncpy(curl->s, buf, len); |
| 223 |
curl->s[len] = '\0'; |
| 224 |
curl->next = ourtext; |
| 225 |
ourtext = curl; |
| 226 |
if (len > maxline) |
| 227 |
maxline = len; |
| 228 |
nlines++; |
| 229 |
} |
| 230 |
return; |
| 231 |
memerr: |
| 232 |
fprintf(stderr, "out of memory in gettext\n"); |
| 233 |
exit(1); |
| 234 |
} |
| 235 |
|
| 236 |
|
| 237 |
arg_text(ac, av) /* get text from arguments */ |
| 238 |
int ac; |
| 239 |
char *av[]; |
| 240 |
{ |
| 241 |
register char *cp; |
| 242 |
|
| 243 |
ourtext = (LINE *)malloc(sizeof(LINE)); |
| 244 |
if (ourtext == NULL) |
| 245 |
goto memerr; |
| 246 |
ourtext->s = malloc(MAXLINE); |
| 247 |
if (ourtext->s == NULL) |
| 248 |
goto memerr; |
| 249 |
for (cp = ourtext->s; ac-- > 0; av++) { |
| 250 |
strcpy(cp, *av); |
| 251 |
cp += strlen(*av); |
| 252 |
*cp++ = ' '; |
| 253 |
} |
| 254 |
*--cp = '\0'; |
| 255 |
ourtext->next = NULL; |
| 256 |
maxline = strlen(ourtext->s); |
| 257 |
nlines = 1; |
| 258 |
return; |
| 259 |
memerr: |
| 260 |
fprintf(stderr, "out of memory in arg_text\n"); |
| 261 |
exit(1); |
| 262 |
} |
| 263 |
|
| 264 |
|
| 265 |
maptext() /* map our text */ |
| 266 |
{ |
| 267 |
register LINE *curl; |
| 268 |
int l; |
| 269 |
register int c; |
| 270 |
|
| 271 |
for (l = 0, curl = ourtext; curl != NULL; l++, curl = curl->next) |
| 272 |
for (c = strlen(curl->s)-1; c >= 0; c--) |
| 273 |
mapglyph(ourfont[curl->s[c]], c, l); |
| 274 |
} |
| 275 |
|
| 276 |
|
| 277 |
mapglyph(gl, tx0, ty0) /* convert a glyph */ |
| 278 |
register GLYPH *gl; |
| 279 |
int tx0, ty0; |
| 280 |
{ |
| 281 |
int n; |
| 282 |
int p0[2], p1[2]; |
| 283 |
|
| 284 |
if (gl == NULL) |
| 285 |
return; |
| 286 |
|
| 287 |
tx0 <<= 8; ty0 <<= 8; |
| 288 |
n = *gl++; |
| 289 |
mapcoord(p0, gl[2*n-2]+tx0, gl[2*n-1]+ty0); |
| 290 |
while (n--) { |
| 291 |
mapcoord(p1, gl[0]+tx0, gl[1]+ty0); |
| 292 |
mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]); |
| 293 |
p0[0] = p1[0]; p0[1] = p1[1]; |
| 294 |
gl += 2; |
| 295 |
} |
| 296 |
} |
| 297 |
|
| 298 |
|
| 299 |
mapcoord(p, tx, ty) /* map text to picture coordinates */ |
| 300 |
int p[2], tx, ty; |
| 301 |
{ |
| 302 |
tx = (long)tx*cwidth >> 8; |
| 303 |
ty = (long)ty*cheight >> 8; |
| 304 |
|
| 305 |
switch (direct) { |
| 306 |
case 'r': /* right */ |
| 307 |
p[0] = tx; |
| 308 |
p[1] = ty; |
| 309 |
return; |
| 310 |
case 'u': /* up */ |
| 311 |
p[0] = xsiz-1-ty; |
| 312 |
p[1] = tx; |
| 313 |
return; |
| 314 |
case 'l': /* left */ |
| 315 |
p[0] = xsiz-1-tx; |
| 316 |
p[1] = ysiz-1-ty; |
| 317 |
return; |
| 318 |
case 'd': /* down */ |
| 319 |
p[0] = ty; |
| 320 |
p[1] = ysiz-1-tx; |
| 321 |
return; |
| 322 |
} |
| 323 |
} |
| 324 |
|
| 325 |
|
| 326 |
mapedge(x, y, run, rise) /* map an edge */ |
| 327 |
register int x, y; |
| 328 |
int run, rise; |
| 329 |
{ |
| 330 |
int xstep; |
| 331 |
int rise2, run2; |
| 332 |
int n; |
| 333 |
|
| 334 |
if (rise == 0) |
| 335 |
return; |
| 336 |
/* always draw up */ |
| 337 |
if (rise < 0) { |
| 338 |
x += run; |
| 339 |
y += rise; |
| 340 |
rise = -rise; |
| 341 |
run = -run; |
| 342 |
} |
| 343 |
if (run < 0) { |
| 344 |
xstep = -1; |
| 345 |
run = -run; |
| 346 |
} else |
| 347 |
xstep = 1; |
| 348 |
n = rise; |
| 349 |
run2 = rise2 = 0; |
| 350 |
while (n) |
| 351 |
if (rise2 >= run2) { |
| 352 |
tglbit(x, y); |
| 353 |
n--; |
| 354 |
y++; |
| 355 |
run2 += run; |
| 356 |
} else { |
| 357 |
x += xstep; |
| 358 |
rise2 += rise; |
| 359 |
} |
| 360 |
} |
| 361 |
|
| 362 |
|
| 363 |
writemap(fp) /* write out bitmap */ |
| 364 |
FILE *fp; |
| 365 |
{ |
| 366 |
COLR *scanout; |
| 367 |
int y; |
| 368 |
register int x; |
| 369 |
register int inglyph; |
| 370 |
|
| 371 |
fprintf(fp, "-Y %d +X %d\n", ysiz, xsiz); |
| 372 |
|
| 373 |
scanout = (COLR *)malloc(xsiz*sizeof(COLR)); |
| 374 |
if (scanout == NULL) { |
| 375 |
fprintf(stderr, "out of memory in writemap\n"); |
| 376 |
exit(1); |
| 377 |
} |
| 378 |
for (y = ysiz-1; y >= 0; y--) { |
| 379 |
inglyph = 0; |
| 380 |
for (x = 0; x < xsiz; x++) { |
| 381 |
if (tstbit(x, y)) |
| 382 |
inglyph ^= 1; |
| 383 |
if (inglyph) |
| 384 |
copycolr(scanout[x], fgcolr); |
| 385 |
else |
| 386 |
copycolr(scanout[x], bgcolr); |
| 387 |
} |
| 388 |
if (fwritecolrs(scanout, xsiz, fp) < 0) { |
| 389 |
fprintf(stderr, "write error in writemap\n"); |
| 390 |
exit(1); |
| 391 |
} |
| 392 |
} |
| 393 |
free((char *)scanout); |
| 394 |
} |
