/* hmtx.c -- Horizontal Metrics Table * Copyright (C) 1997 Li-Da Lho, All right reserved */ #include #include #include "config.h" #include "ttf.h" #include "ttfutil.h" #ifdef MEMCHECK #include #endif /* $Id: hmtx.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $ */ #ifndef lint static char vcid[] = "$Id: hmtx.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $"; #endif /* lint */ static HMTXPtr ttfAllocHMTX(TTFontPtr font); static void ttfLoadHMTX(FILE *fp,HMTXPtr hmtx,ULONG offset); /* Caution: Because of interdependency between tables, * table hhea and maxp should be well initalized before * ttfInitHMTX is been called */ void ttfInitHMTX(TTFontPtr font) { ULONG tag = 'h' | 'm' << 8 | 't' << 16 | 'x' << 24; TableDirPtr ptd; if ((ptd = ttfLookUpTableDir(tag,font)) != NULL) { font->hmtx = ttfAllocHMTX(font); font->hmtx->numberOfHMetrics = font->hhea->numberOfHMetrics; font->hmtx->numberOfLSB = font->maxp->numGlyphs - font->hhea->numberOfHMetrics; ttfLoadHMTX(font->fp,font->hmtx,ptd->offset); } } static HMTXPtr ttfAllocHMTX(TTFontPtr font) { HMTXPtr hmtx; if ((hmtx = (HMTXPtr) calloc(1,sizeof(HMTX))) == NULL) { ttfError("Out of Memory in __FILE__:__LINE__\n"); return NULL; } return hmtx; } static void ttfLoadHMTX(FILE *fp,HMTXPtr hmtx,ULONG offset) { USHORT i,n = hmtx->numberOfHMetrics,m=hmtx->numberOfLSB; if (fseek(fp,offset,SEEK_SET) !=0) ttfError("Fseek Failed in ttfLOADHMTX \n"); if ((hmtx->hMetrics = (longHorMetric *) calloc(n,sizeof(longHorMetric))) != NULL) { for (i=0;ihMetrics+i)->advanceWidth = ttfGetuFWord(fp); (hmtx->hMetrics+i)->lsb = ttfGetFWord(fp); } } else { ttfError("Out Of Memory in __FILE__ : __LINE__\n"); } /* codes dealing with leftSideBearing entry */ if (m && ((hmtx->leftSideBearing = (FWord *) calloc(m,sizeof(FWord))) != NULL)) { for (i=0;ileftSideBearing)[i] = ttfGetFWord(fp); } } } void ttfPrintHMTX(FILE *fp,HMTXPtr hmtx) { int i; fprintf(fp,"'hmtx' Table - Horizontal Metrics\n"); fprintf(fp,"---------------------------------\n"); for (i=0;inumberOfHMetrics;i++) { fprintf(fp,"\t %4d. advWid: %4d, LSBear: %4d\n",i, (hmtx->hMetrics+i)->advanceWidth, (hmtx->hMetrics+i)->lsb); } for (i=0;inumberOfLSB;i++) { fprintf(fp,"\t %4d. LSbear: %4d\n",i+hmtx->numberOfHMetrics, (hmtx->leftSideBearing)[i]); } } void ttfFreeHMTX(HMTXPtr hmtx) { free(hmtx->hMetrics); if (hmtx->numberOfLSB) free(hmtx->leftSideBearing); free(hmtx); }