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/* font.c -- general font init and clean up codes
* Copyright (C) 1996 Li-Da Lho, All right reserved
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "ttf.h"
#include "ttfutil.h"
#include "protos.h"
/* $Id: font.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $ */
static void ttfInitInterpreter(TTFontPtr font);
TTFontPtr ttfInitFont(char *filename)
{
TTFontPtr font;
font = XCALLOC1 (TTFont);
font->ttfname = filename;
if ((font->fp = fopen (filename,"r")) == NULL)
{
fprintf(stderr,"Can't open ttf file %s\n",filename);
free(font);
return NULL;
}
ttfLoadFont(font, 0);
return font;
}
void ttfLoadFont(TTFontPtr font, ULONG offset)
{
xfseek(font->fp, offset, SEEK_SET, "ttfLoadFont");
/* offset table */
font->version = ttfGetFixed(font->fp);
font->numTables = ttfGetUSHORT(font->fp);
ttfInitTableDir(font,offset);
ttfLoadRequiredTables(font);
ttfLoadOptionalTables(font);
ttfInitInterpreter(font);
/* initialize the reference count to 1 */
font->refcount = XCALLOC1 (int);
*(font->refcount) = 1;
}
void ttfFreeFont(TTFontPtr font)
{
ttfFreeRequiredTables(font);
ttfFreeOptionalTables(font);
ttfFreeTableDir(font->dir);
free(font->refcount);
free(font);
}
void ttfLoadRequiredTables(TTFontPtr font)
{
ttfInitCMAP(font);
ttfInitNAME(font);
ttfInitMAXP(font);
ttfInitHEAD(font);
ttfInitLOCA(font);
ttfInitGlyphCache(font);
ttfInitGLYF(font);
ttfInitHHEA(font);
ttfInitHMTX(font);
ttfInitPOST(font);
ttfInitOS2(font);
}
void ttfFreeRequiredTables(TTFontPtr font)
{
ttfFreeCMAP(font->cmap);
ttfFreeNAME(font->name);
ttfCleanUpGlyphCache(font);
ttfFreeLOCA(font->loca);
ttfFreeHEAD(font->head);
ttfFreeMAXP(font->maxp);
ttfFreeHMTX(font->hmtx);
ttfFreeHHEA(font->hhea);
ttfFreePOST(font->post);
ttfFreeOS2(font->os2);
}
void ttfLoadOptionalTables(TTFontPtr font)
{
ttfInitCVT(font);
ttfInitFPGM(font);
ttfInitGASP(font);
ttfInitHDMX(font);
ttfInitKERN(font);
ttfInitPREP(font);
ttfInitLTSH(font);
ttfInitPCLT(font);
ttfInitVDMX(font);
ttfInitVHEA(font);
ttfInitVMTX(font);
}
void ttfFreeOptionalTables(TTFontPtr font)
{
ttfFreeCVT(font->cvt);
ttfFreeFPGM(font->fpgm);
ttfFreeGASP(font->gasp);
ttfFreeHDMX(font->hdmx);
ttfFreeKERN(font->kern);
ttfFreePREP(font->prep);
ttfFreeLTSH(font->ltsh);
ttfFreePCLT(font->pclt);
ttfFreeVDMX(font->vdmx);
ttfFreeVHEA(font->vhea);
ttfFreeVMTX(font->vmtx);
}
#if 0
/* Not used */
/* make a clone of the origional font
* This is use for fonts that support more than one encoding scheme
*
* Problems:
* 1. which of those members can be shared between two instances
* 2. How can we free a font safely
*/
TTFontPtr ttfCloneFont(TTFontPtr font)
{
TTFontPtr newfont;
newfont = XTALLOC1 (TTFont);
memcpy(newfont, font, sizeof(TTFont));
newfont->refcount += 1;
return newfont;
}
#endif
static void ttfInitInterpreter(TTFontPtr font)
{
ttfInitStorageArea(font);
ttfInitStack(font);
ttfInitGraphicsState(font);
}
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