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#include <u.h>
#include <libc.h>
#include <draw.h>
Subfont*
readsubfonti(Display*d, char *name, int fd, Image *ai, int dolock)
{
char hdr[3*12+4+1];
int n;
uchar *p;
Fontchar *fc;
Subfont *f;
Image *i;
i = ai;
if(i == nil){
i = readimage(d, fd, dolock);
if(i == nil)
return nil;
}
if(read(fd, hdr, 3*12) != 3*12){
if(ai == nil)
freeimage(i);
werrstr("rdsubfonfile: header read error: %r");
return nil;
}
n = atoi(hdr);
p = malloc(6*(n+1));
if(p == nil)
goto Err;
if(read(fd, p, 6*(n+1)) != 6*(n+1)){
werrstr("rdsubfonfile: fontchar read error: %r");
Err:
if(ai == nil)
freeimage(i);
free(p);
return nil;
}
fc = malloc(sizeof(Fontchar)*(n+1));
if(fc == nil)
goto Err;
_unpackinfo(fc, p, n);
if(dolock)
lockdisplay(d);
f = allocsubfont(name, n, atoi(hdr+12), atoi(hdr+24), fc, i);
if(dolock)
unlockdisplay(d);
if(f == nil){
free(fc);
goto Err;
}
free(p);
return f;
}
Subfont*
readsubfont(Display*d, char *name, int fd, int dolock)
{
return readsubfonti(d, name, fd, nil, dolock);
}
void
_unpackinfo(Fontchar *fc, uchar *p, int n)
{
int j;
for(j=0; j<=n; j++){
fc->x = p[0]|(p[1]<<8);
fc->top = p[2];
fc->bottom = p[3];
fc->left = p[4];
fc->width = p[5];
fc++;
p += 6;
}
}
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