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/*
* NAME
* pk2bm - create a bitmap from a TeX pkfont
* SYNOPSIS:
* pk2bm [-bh] [-W width] [-H height] {-c char|-o octchar} pkfont
* DESCRIPTION
* This program generates a bitmap (ASCII file) which can be used
* to create X11 applications. The bitmap file consists of all
* pixels of the specified character (via the -c or -o option) from
* the given pkfont. The format is described in bitmap(X11).
*
* The pkfont is a packed fontfile generated by gftopk(TeX) from a
* gffont. A gffont is the output of METAFONT a program to design fonts
* in a device independant way.
*
* With the -b flag a bitmap is generated in which all black pixels are
* drawn as a `*' and all white bits as a `.'. With the -h flag a
* hexadecimal bitmap dump is generated.
*
* The -W and/or -H options can be used to create a bitmap of
* respectivally `width' and `height' pixels. The pk-bitmap will in
* this case be centered according to these new dimensions.
*
* The output is written to the standard output.
* SEE ALSO
* ``METAFONT'', Donald Knuth.
* ``The PKtype processor'', belonging to the METAFONTware.
* bitmap(X11), gftopk(TeX), pktype(TeX), ps2pk(1)
* AUTHOR
* Piet Tutelaers
* rcpt@urc.tue.nl
*/
#include <stdio.h>
#include "pkin.h"
#ifdef WIN32
#include <fcntl.h>
#endif
int main(int argc, char *argv[])
{
int done, C = 0, c, h = 0, w = 0, row, col;
unsigned int bitmap = 0, hexmap = 0;
halfword *word;
quarterword lsbf();
void dots();
chardesc cd;
char *myname = "pk2bm", *pkname;
int atoo(char *);
while (--argc > 0 && (*++argv)[0] == '-') {
done=0;
while ((!done) && (c = *++argv[0])) /* allow -bcK as an option */
switch (c) {
case 'c':
if (*++argv[0] == '\0') {
argc--; argv++;
}
C = *argv[0];
done = 1; break;
case 'o':
if (*++argv[0] == '\0') {
argc--; ++argv;
}
C = atoo(argv[0]);
done = 1; break;
case 'H':
if (*++argv[0] == '\0') {
argc--; argv++;
}
h = atoi(argv[0]);
done=1;
break;
case 'W':
if (*++argv[0] == '\0') {
argc--; argv++;
}
w = atoi(argv[0]);
done=1;
break;
case 'b':
bitmap = 1;
break;
case 'h':
hexmap = 1;
break;
default:
printf("%s: %c illegal option\n", myname, c);
exit(1);
}
}
if (argc == 0) {
printf("Usage: %s [-bh] {-c char|-o octchar} [-W width -H height] pkfile\n", myname);
exit(1);
}
#ifdef WIN32
setmode(fileno(stdout), _O_BINARY);
#endif
pkname = argv[0];
if (readchar(pkname, C, &cd)) {
int H, dh, W, dw, bitsleft;
halfword nextword; quarterword nextbyte;
H=cd.cheight; if (h==0) h=H; dh=(h-H)/2;
W=cd.cwidth; if (w==0) w=W; dw=(w-W)/2;
if (bitmap || hexmap) {
printf("character : %d (%c)\n", (int) cd.charcode,
(char)cd.charcode);
printf(" height : %d\n", (int) cd.cheight);
printf(" width : %d\n", (int) cd.cwidth);
printf(" xoff : %d\n", (int) cd.xoff);
printf(" yoff : %d\n", (int) cd.yoff);
}
else {
printf("#define %s_%c_width \t %d\n",
pkname, (char)cd.charcode, (int) w);
printf("#define %s_%c_height \t %d\n",
pkname, (char)cd.charcode, (int) h);
printf("#define %s_%c_xoff \t %d\n",
pkname, (char)cd.charcode, (int) dw);
printf("#define %s_%c_yoff \t %d\n",
pkname, (char)cd.charcode, (int) dh);
printf("static char %s_%c_bits[] = {",
pkname, (char)cd.charcode);
}
for (row=0; row<h-H-dh; row++) {
printf("\n ");
for (col=0; col<w; col+=8)
if (bitmap) dots(0, w-col>7? 8: w-col);
else if (hexmap) printf("%02x", 0x00);
else printf(" 0x%02x, ", 0x00);
}
word = cd.raster;
for (row=h-H-dh; row<h-dh; row++) {
bitsleft = dw; nextword = 0;
printf("\n ");
for (col=0; col<w; col+=8) {
if (bitsleft>=8) {
nextbyte = nextword >> (bitsleft-8) & 0xff;
bitsleft-=8;
if (bitmap) dots(nextbyte, w-col>7? 8: w-col);
else if (hexmap) printf("%02x", nextbyte);
else printf(" 0x%02x, ", lsbf(nextbyte));
}
else {
nextbyte = nextword << (8-bitsleft) & 0xff;
if (col-dw<W)
nextword=(*word++);
else nextword=0;
nextbyte = nextbyte | (nextword >> (16-(8-bitsleft))
& 0xff);
bitsleft = 16 - (8-bitsleft);
if (bitmap) dots(nextbyte, w-col>7? 8: w-col);
else if (hexmap) printf("%02x", nextbyte);
else printf(" 0x%02x, ", lsbf(nextbyte));
}
}
}
for (row=h-dh; row<h; row++) {
printf("\n ");
for (col=0; col<w; col+=8)
if (bitmap) dots(0, w-col>7? 8: w-col);
else if (hexmap) printf("%02x", 0x00);
else printf(" 0x%02x, ", 0x00);
}
if ((!bitmap) && (!hexmap)) printf("};\n");
else putchar('\n');
}
return 0;
}
/*
* lsbf() transforms a byte (least significant bit first).
*/
quarterword lsbf(u)
quarterword u;
{
int i; quarterword bit, result = 0;
for (i=0; i<8; i++) {
bit = u & 001;
result = (result<<1) | bit;
u = u >> 1;
}
return result;
}
/*
* dots() print byte: `*' for a black and `.' for a white pixel
*/
void dots(u, n)
quarterword u; int n;
{ unsigned int bit;
bit=1<<7;
for ( ;n>0 ;n--) {
if (u & bit) putchar('*');
else putchar('.');
bit>>=1;
}
}
int atoo(char *oct)
{ int octal = 0;
while (*oct != '\0') octal = 8*octal + (*oct++) - '0';
return octal & 0xff;
}
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