#include #include #include "config.h" #include "ttf.h" #include "ttfutil.h" #ifdef MEMCHECK #include #endif /* $Id: loca.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $ */ #ifndef lint static char vcid[] = "$Id: loca.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $"; #endif /* lint */ static LOCAPtr ttfAllocLOCA(TTFontPtr font); static void ttfLoadLOCA(FILE *fp,LOCAPtr loca,ULONG offset); void ttfInitLOCA(TTFontPtr font) { ULONG tag = 'l' | 'o' << 8 | 'c' << 16 | 'a' <<24; TableDirPtr ptd; if ((ptd = ttfLookUpTableDir(tag,font)) != NULL) { font->loca = (LOCAPtr) ttfAllocLOCA(font); ttfLoadLOCA(font->fp,font->loca,ptd->offset); } } static LOCAPtr ttfAllocLOCA(TTFontPtr font) { USHORT n=0; LOCAPtr loca; if ((loca = (LOCAPtr) calloc(1,sizeof(LOCA))) == NULL) { ttfError("Out of Memory\n"); } else { loca->indexToLocFormat = font->head->indexToLocFormat; loca->numGlyphs = n = font->maxp->numGlyphs; } n += 1;/* the number of loca entry is numberOfGlyph+1 */ if ((loca->offset = (ULONG *) calloc(n,sizeof(ULONG))) == NULL) { ttfError("Out Of Memory\n"); free (loca); return NULL; } return loca; } static void ttfLoadLOCA(FILE *fp,LOCAPtr loca,ULONG offset) { /* warrning: the number of loca entry is numberOfGlyph+1 !! */ USHORT i,n = loca->numGlyphs+1; if (fseek(fp,offset,SEEK_SET) !=0) ttfError("Fseek Failed in ttfLOADLOCA \n"); switch (loca->indexToLocFormat) { case LOCA_OFFSET_SHORT: for (i=0;ioffset)[i] = (ULONG) ttfGetUSHORT(fp)*2; } break; case LOCA_OFFSET_LONG: if (fread(loca->offset,sizeof(ULONG),n,fp) != n) ttfError("Error reading loca data\n"); #ifndef WORDS_BIGENDIAN FourByteSwap((unsigned char *) loca->offset,n*sizeof(ULONG)); #endif break; } } void ttfPrintLOCA(FILE *fp,LOCAPtr loca) { USHORT i; fprintf(fp,"'loca' Table - Index to Location\n"); fprintf(fp,"--------------------------------\n"); for (i=0;inumGlyphs;i++) { fprintf(fp,"\t Idx %6d -> GlyphOffset 0x%08x\n",i, (loca->offset)[i]); } fprintf (fp,"\t Ended at 0x%08x\n",(loca->offset)[loca->numGlyphs]); } void ttfFreeLOCA(LOCAPtr loca) { free (loca->offset); free (loca); } ULONG ttfLookUpGlyfLOCA(LOCAPtr loca,USHORT idx) { /* out of bound or it is a non-glyph character */ if (idx >= loca->numGlyphs || loca->offset[idx] == loca->offset[idx+1]) return (loca->offset)[0]; return (loca->offset)[idx]; }