static int _getIndex(int c){
#define ERRCHR (font->u8FirstChar+1)
/* Does this font provide this character? */
if(c<font->u8FirstChar)
c=ERRCHR;
if(c>font->u8LastChar && efont.type!=FONT_EXTERNAL && font->charExtra == NULL)
c=ERRCHR;
if(c>font->u8LastChar && (efont.type==FONT_EXTERNAL || font->charExtra != NULL)){
if(efont.type==FONT_EXTERNAL){
_getFontData(SEEK_EXTRAS,0);
int cc=0;
int cache;
while( (cache=_getFontData(GET_EXTRAS,0)) < c)
cc++;
if( cache > c)
c=ERRCHR;
else
c=font->u8LastChar+cc+1;
}else{
int cc=0;
while( font->charExtra[cc] < c)
cc++;
if(font->charExtra[cc] > c)
c=ERRCHR;
else
c=font->u8LastChar+cc+1;
};
};
c-=font->u8FirstChar;
return c;
}
static char gnn(){ // Get next nibble
static int byte;
int val;
if(hilo==1)
ctr++;
hilo=1-hilo;
if(hilo==1){
if(efont.type==FONT_EXTERNAL){
byte=_getFontData(GET_DATA,0);
}else{
byte=data[ctr];
};
val=byte>>4;
}else{
void setExtFont(const char *fname){
if(strlen(fname)>8+4)
return;
strcpy(efont.name,fname);
efont.type=FONT_EXTERNAL;
font=NULL;
UINT res;
res=f_open(&file, efont.name, FA_OPEN_EXISTING|FA_READ);
if(res!=FR_OK){
efont.type=0;
font=&Font_7x8;
}else{
_getFontData(START_FONT,0);
font=&efont.def;
};
}
int DoChar(int sx, int sy, int c){
if(font==NULL){
font=&Font_7x8;
};
/* how many bytes is it high? */
char height=(font->u8Height-1)/8+1;
char hoff=(8-(font->u8Height%8))%8;
const uint8_t * data;
int width,preblank=0,postblank=0;
do { /* Get Character data */
/* Get intex into character list */
c=_getIndex(c);
/* starting offset into character source data */
int toff=0;
if(font->u8Width==0){
if(efont.type == FONT_EXTERNAL){
_getFontData(SEEK_WIDTH,0);
for(int y=0;y<c;y++)
toff+=_getFontData(GET_WIDTH,0);
width=_getFontData(GET_WIDTH,0);
_getFontData(SEEK_DATA,toff);
UINT res;
UINT readbytes;
UINT size = width * height;
if(size > MAXCHR) size = MAXCHR;
res = f_read(&file, charBuf, size, &readbytes);
if(res != FR_OK || readbytes<width*height)
return sx;
data=charBuf;
}else{
for(int y=0;y<c;y++)
toff+=font->charInfo[y].widthBits;
width=font->charInfo[c].widthBits;
toff*=height;
data=&font->au8FontTable[toff];
};
postblank=1;
}else if(font->u8Width==1){ // NEW CODE
if(efont.type == FONT_EXTERNAL){
_getFontData(SEEK_WIDTH,0);
for(int y=0;y<c;y++)
toff+=_getFontData(GET_WIDTH,0);
width=_getFontData(GET_WIDTH,0);
_getFontData(SEEK_DATA,toff);
UINT res;
UINT readbytes;
uint8_t testbyte;
testbyte = read_byte ();
if(testbyte>>4 ==15){
preblank = read_byte ();
postblank = read_byte ();
width-=3;
width/=height;
UINT size = width * height;
if(size > MAXCHR) size = MAXCHR;
res = f_read(&file, charBuf, size, &readbytes);
if(res != FR_OK || readbytes<width*height)
return sx;
data=charBuf;
}else{
_getFontData(SEEK_DATA,toff);
data=pk_decode(NULL,&width); // Hackety-hack
};
}else{
// Find offset and length for our character
for(int y=0;y<c;y++)
toff+=font->charInfo[y].widthBits;
width=font->charInfo[c].widthBits;
if(font->au8FontTable[toff]>>4 == 15){ // It's a raw character!
preblank = font->au8FontTable[toff+1];
postblank= font->au8FontTable[toff+2];
data=&font->au8FontTable[toff+3];
width=(width-3/height);
}else{
data=pk_decode(&font->au8FontTable[toff],&width);
}
};
