// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of "Eclipse Public License v1.0"

 // which accompanies this distribution, and is available

 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 //

 #include "FONTCOMP.H"

 EffRead::EffRead(fstream& aFile,FontCompiler& aFontCompiler,Fxf* aFxf,short int* aMapSpace):

 	FontRead(aFile,aFontCompiler,aFxf),

 	iMapSpace(aMapSpace)

 	{}

 int EffRead::ReadFont()

     {

 	int count=0;

 	int version=0;

 	char* outbuffer[(MAX_CHAR_WID+7)>>3];

 	int bitpos,len1,len2;

 	int ReadSize,widToGo;

 	int widthofi=0;

 	int widthofM=0;

 	FcmCharHead* pFxf;

 	LetterTableData lettertabledata;

 	LetterData letterdata;

 	letterdata.blx = 0;

 	letterdata.bly = 0;

 	letterdata.rWid = 0;

 	letterdata.rHgt = 0;

 	int FileSize,FontNameOffs,VariousDataOffs,LetterOffs,LetterOffsBase,seekpos;

 	unsigned short int* pDest;

 	unsigned short int* pSrc;

 	EffVariousData VariousData;

 	char* inBuffer=new char[((MAX_CHAR_WID+7)>>3)*MAX_HEIGHT];

 	if(!inBuffer) return(NoMemory);

 	iInputFile.read((char*)&FileSize,4);

 	iInputFile.read((char*)&FontNameOffs,4);

 	iInputFile.read((char*)&VariousDataOffs,4);

 	iInputFile.read((char*)&VariousDataOffs,4);

 	iInputFile.read((char*)&LetterOffs,4);

 	iInputFile.seekg(FontNameOffs);

 	char tmpName[FONT_NAME_LEN+1];

 	iInputFile.read(tmpName,FONT_NAME_LEN);

 	tmpName[FONT_NAME_LEN]=0;

 	strcpy(iFxf->name,tmpName);

 	*(iFxf->typeface)=0;

 	iInputFile.seekg(VariousDataOffs);

 	iInputFile.read((char*)&VariousData,sizeof(VariousData));

 	version=VariousData.version;

 	if(version==0) version=1;

 	if(version!=1 && version!=2) return(FileFormat);

 	pFxf=new FcmCharHead[MAX_CHARS];

 	for(count=0;count<sizeof(FcmCharHead)*MAX_CHARS;count++)

 		((char*)pFxf)[count]=0;

 	int offset=0;

 	int first=1;

 	LetterOffsBase=LetterOffs;

 	iFxf->descent= -VariousData.bly;

 	iFxf->UlinePos= -VariousData.UnderLinePos-VariousData.UnderLineThickness;

 	iFxf->UlineThickness=VariousData.UnderLineThickness;

 	iFxf->nominal_ascent=(VariousData.Hgt/*+VariousData.LineSpacing*/)-iFxf->descent;

 	iFxf->MaxChrWidth=0;

 	iFxf->cell_height=VariousData.Hgt;

 	for(unsigned int chNum=0;chNum<MAX_CHARS;chNum++)

 		{

 		if(iMapSpace)

 			iInputFile.seekg((*(iMapSpace+chNum)<<2)+LetterOffsBase);

 		else

 			iInputFile.seekg(LetterOffs);

 		iInputFile.read((char*)&lettertabledata,sizeof(LetterTableData));

 		if(version==1)

 			{

 			lettertabledata.width>>=4;

 			iInputFile.read((char*)&letterdata,sizeof(LetterData));

 			LetterOffs+=sizeof(LetterData);

 			}

 		LetterOffs+=sizeof(LetterTableData);

 		iFxf->chr[chNum]=0;

 // char 0 in EFF fonts have a garbage offset so ignore them.

 //		if(letterdata.offset)

 		if(lettertabledata.offset && chNum>0)

 			{

 			seekpos=LetterOffsBase+lettertabledata.offset;

 			iInputFile.seekg(seekpos);

 			if(version==2)

 				iInputFile.read((char*)&letterdata,sizeof(LetterData));

 			if(first)

 				{

 				iFxf->FirstChr=chNum;

 				first=0;

 				}

 			iFxf->n_chars=chNum+1;

 			iFxf->chr[chNum]=pFxf;

 			pFxf->offset=offset;

 			pFxf->xOffset=letterdata.blx;

 			pFxf->yOffset=letterdata.rHgt+letterdata.bly;

 			pFxf->width=letterdata.rWid;

 			if(chNum=='i')

 				widthofi=pFxf->width;

 			if(chNum=='M')

 				widthofM=pFxf->width;

 			pFxf->ByteWid=((pFxf->width+15)>>3)&(~1);

 			pFxf->height=letterdata.rHgt;

 			pFxf->move=lettertabledata.width;

 			int chWid=letterdata.rWid;

 			if(chWid>iFxf->MaxChrWidth)

 			    iFxf->MaxChrWidth=chWid;

 			ReadSize=(letterdata.rWid*letterdata.rHgt+7)>>3;

 			iInputFile.read(inBuffer,ReadSize);

 			bitpos=0;

 			pSrc=(unsigned short int*)inBuffer;

 			for(int i=0;i<letterdata.rHgt;i++)

 			    {

 			    pDest=(unsigned short int*)outbuffer;

 			    for(int j=0;j<pFxf->ByteWid;j+=2)

 			        {

 			        len1=16-bitpos;

 			        *pDest=(unsigned short int)((*pSrc)>>bitpos);

 			        widToGo=letterdata.rWid-(j<<3);

 			        if (len1>widToGo)

 			            {

 			            len1=widToGo;

 			            len2=0;

 			            }

 			        else

 			            {

 			            pSrc++;

 			            if ((len1+bitpos)>widToGo)

 			                len2=widToGo-len1;

 			            else

 			                len2=bitpos;

 			            if (len2)

 			                *pDest|= (*pSrc)<<(16-bitpos);

 			            }

 			        *pDest&=0xFFFF>>(16-len2-len1);

 			        bitpos=(bitpos+len1+len2)&0xF;

 			        pDest++;

 			        }

 				memcpy(iFontCompiler->FontStore()+offset+pFxf->ByteWid*(letterdata.rHgt-i-1),outbuffer,pFxf->ByteWid);

 			    }

 			offset+=pFxf->ByteWid*letterdata.rHgt;

 			}

         pFxf++;

         }

 	if(widthofi && widthofM)

 		iFxf->iProportional=(widthofi!=widthofM);

 	return(NoError);

     }