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/* gasp.c -- Grid-fitting And Scan-conversion Procedure
* Copyright (C) 1996 Li-Da Lho, All right reserved
*/
#include <stdio.h>
#include <stdlib.h>
#include "config.h"
#include "ttf.h"
#include "ttfutil.h"
#ifdef MEMCHECK
#include <dmalloc.h>
#endif
/* $Id: gasp.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $ */
#ifndef lint
static char vcid[] = "$Id: gasp.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $";
#endif /* lint */
static GASPPtr ttfAllocGASP(TTFontPtr font);
static void ttfLoadGASP(FILE *fp,GASPPtr gasp,ULONG offset);
void ttfInitGASP(TTFontPtr font)
{
ULONG tag = 'g' | 'a' << 8 | 's' << 16 | 'p' << 24;
TableDirPtr ptd;
if ((ptd = ttfLookUpTableDir(tag,font)) != NULL)
{
font->gasp = ttfAllocGASP(font);
ttfLoadGASP(font->fp,font->gasp,ptd->offset);
}
}
static GASPPtr ttfAllocGASP(TTFontPtr font)
{
GASPPtr gasp;
if ((gasp = (GASPPtr) calloc(1,sizeof(GASP))) == NULL)
{
ttfError("Out of Memory in __FILE__:__LINE__\n");
return NULL;
}
return gasp;
}
static void ttfLoadGASP (FILE *fp,GASPPtr gasp,ULONG offset)
{
int i;
if (fseek(fp,offset,SEEK_SET) !=0)
ttfError("Fseek Failed in ttfLoadGASP \n");
gasp->version = ttfGetUSHORT(fp);
gasp->numRanges = ttfGetUSHORT(fp);
gasp->gaspRange = (GASPRANGE *) calloc(gasp->numRanges, sizeof(GASPRANGE));
if (gasp->gaspRange == NULL)
ttfError("Out of Memory in __FILE__:__LINE__\n");
else
for (i=0;i<gasp->numRanges;i++)
{
gasp->gaspRange[i].rangeMaxPPEM = ttfGetUSHORT(fp);
gasp->gaspRange[i].rangeGaspBehavior = ttfGetUSHORT(fp);
}
}
void ttfPrintGASP(FILE *fp,GASPPtr gasp)
{
int i;
fprintf(fp,"'gasp' Table - Grid-fitting And Scan-conversion Procedure\n");
fprintf(fp,"---------------------------------------------------------\n");
fprintf(fp,"'gasp' version:\t %d\n",gasp->version);
fprintf(fp,"numRanges: \t %d\n\n",gasp->numRanges);
for (i=0;i<gasp->numRanges;i++)
{
fprintf(fp,"\t gasp Range %d\n",i);
fprintf(fp,"\t rangeMaxPPEM:\t %d\n",
gasp->gaspRange[i].rangeMaxPPEM);
fprintf(fp,"\t rangeGaspBehavior:\t 0x%04x\n\n",
gasp->gaspRange[i].rangeGaspBehavior);
}
fprintf(fp,"\n");
}
void ttfFreeGASP(GASPPtr gasp)
{
if (gasp != NULL)
{
free(gasp->gaspRange);
free(gasp);
}
}
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