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/* vmtx.c -- Vertical Metrics Table
* Copyright (C) 1997 Li-Da Lho, All right reserved
*/
#include <stdio.h>
#include <stdlib.h>
#include "config.h"
#include "ttf.h"
#include "ttfutil.h"
/* $Id: vmtx.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $ */
static void ttfLoadVMTX(FILE *fp,VMTXPtr vmtx,ULONG offset);
/* Caution: Because of interdependency between tables,
* table vhea and maxp should be well initalized before
* ttfInitVMTX has been called
*/
void ttfInitVMTX(TTFontPtr font)
{
ULONG tag = FT_MAKE_TAG ('v', 'm', 't', 'x');
TableDirPtr ptd;
if ((ptd = ttfLookUpTableDir(tag,font)) != NULL)
{
font->vmtx = XCALLOC1 (VMTX);
font->vmtx->numOfLongVerMetrics =
font->vhea->numOfLongVerMetrics;
font->vmtx->numOfTSB = font->maxp->numGlyphs -
font->vhea->numOfLongVerMetrics;
ttfLoadVMTX(font->fp,font->vmtx,ptd->offset);
}
}
static void ttfLoadVMTX(FILE *fp,VMTXPtr vmtx,ULONG offset)
{
USHORT i,n = vmtx->numOfLongVerMetrics,m=vmtx->numOfTSB;
xfseek(fp, offset, SEEK_SET, "ttfLoadVMTX");
vmtx->vMetrics = XCALLOC (n, longVerMetric);
for (i=0;i<n;i++)
{
(vmtx->vMetrics+i)->advanceHeight = ttfGetuFWord(fp);
(vmtx->vMetrics+i)->topSideBearing = ttfGetFWord(fp);
}
/* codes dealing with topSideBearing entry */
if (m)
{
vmtx->topSideBearing = XCALLOC (m, FWord);
for (i=0;i<m;i++)
{
(vmtx->topSideBearing)[i] = ttfGetFWord(fp);
}
}
}
void ttfPrintVMTX(FILE *fp,VMTXPtr vmtx)
{
int i;
fprintf(fp,"'vmtx' Table - Vertical Metrics\n");
fprintf(fp,"---------------------------------\n");
for (i=0;i<vmtx->numOfLongVerMetrics;i++)
{
fprintf(fp,"\t %4d. advWid: %4d, TSBear: %4d\n",i,
(vmtx->vMetrics+i)->advanceHeight,
(vmtx->vMetrics+i)->topSideBearing);
}
for (i=0;i<vmtx->numOfTSB;i++)
{
fprintf(fp,"\t %4d. TSBear: %4d\n",i+vmtx->numOfLongVerMetrics,
(vmtx->topSideBearing)[i]);
}
}
void ttfFreeVMTX(VMTXPtr vmtx)
{
if (vmtx != NULL)
{
free(vmtx->vMetrics);
if (vmtx->numOfTSB)
free(vmtx->topSideBearing);
free(vmtx);
}
}
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