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

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

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

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "FONTCOMP.H"

    17 

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

    19 	FontRead(aFile,aFontCompiler,aFxf),

    20 	iMapSpace(aMapSpace)

    21 	{}

    22 

    23 int EffRead::ReadFont()

    24     {

    25 	int count=0;

    26 	int version=0;

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

    28 	int bitpos,len1,len2;

    29 	int ReadSize,widToGo;

    30 	int widthofi=0;

    31 	int widthofM=0;

    32 	FcmCharHead* pFxf;

    33 	LetterTableData lettertabledata;

    34 	LetterData letterdata;

    35 	letterdata.blx = 0;

    36 	letterdata.bly = 0;

    37 	letterdata.rWid = 0;

    38 	letterdata.rHgt = 0;

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

    40 	unsigned short int* pDest;

    41 	unsigned short int* pSrc;

    42 	EffVariousData VariousData;

    43 

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

    45 	if(!inBuffer) return(NoMemory);

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

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

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

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

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

    51 	iInputFile.seekg(FontNameOffs);

    52 

    53 	char tmpName[FONT_NAME_LEN+1];

    54 	iInputFile.read(tmpName,FONT_NAME_LEN);

    55 	tmpName[FONT_NAME_LEN]=0;

    56 	strcpy(iFxf->name,tmpName);

    57 	*(iFxf->typeface)=0;

    58 

    59 	iInputFile.seekg(VariousDataOffs);

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

    61 	version=VariousData.version;

    62 	if(version==0) version=1;

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

    64 	pFxf=new FcmCharHead[MAX_CHARS];

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

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

    67 	int offset=0;

    68 	int first=1;

    69 	LetterOffsBase=LetterOffs;

    70 	iFxf->descent= -VariousData.bly;

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

    72 	iFxf->UlineThickness=VariousData.UnderLineThickness;

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

    74 	iFxf->MaxChrWidth=0;

    75 	iFxf->cell_height=VariousData.Hgt;

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

    77 		{

    78 		if(iMapSpace)

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

    80 		else

    81 			iInputFile.seekg(LetterOffs);

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

    83 		if(version==1)

    84 			{

    85 			lettertabledata.width>>=4;

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

    87 			LetterOffs+=sizeof(LetterData);

    88 			}

    89 		LetterOffs+=sizeof(LetterTableData);

    90 		iFxf->chr[chNum]=0;

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

    92 //		if(letterdata.offset)

    93 		if(lettertabledata.offset && chNum>0)

    94 			{

    95 			seekpos=LetterOffsBase+lettertabledata.offset;

    96 			iInputFile.seekg(seekpos);

    97 			if(version==2)

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

    99 			if(first)

   100 				{

   101 				iFxf->FirstChr=chNum;

   102 				first=0;

   103 				}

   104 			iFxf->n_chars=chNum+1;

   105 			iFxf->chr[chNum]=pFxf;

   106 			pFxf->offset=offset;

   107 			pFxf->xOffset=letterdata.blx;

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

   109 			pFxf->width=letterdata.rWid;

   110 			if(chNum=='i')

   111 				widthofi=pFxf->width;

   112 			if(chNum=='M')

   113 				widthofM=pFxf->width;

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

   115 			pFxf->height=letterdata.rHgt;

   116 			pFxf->move=lettertabledata.width;

   117 			int chWid=letterdata.rWid;

   118 			if(chWid>iFxf->MaxChrWidth)

   119 			    iFxf->MaxChrWidth=chWid;

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

   121 			iInputFile.read(inBuffer,ReadSize);

   122 			bitpos=0;

   123 			pSrc=(unsigned short int*)inBuffer;

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

   125 			    {

   126 			    pDest=(unsigned short int*)outbuffer;

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

   128 			        {

   129 			        len1=16-bitpos;

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

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

   132 			        if (len1>widToGo)

   133 			            {

   134 			            len1=widToGo;

   135 			            len2=0;

   136 			            }

   137 			        else

   138 			            {

   139 			            pSrc++;

   140 			            if ((len1+bitpos)>widToGo)

   141 			                len2=widToGo-len1;

   142 			            else

   143 			                len2=bitpos;

   144 			            if (len2)

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

   146 			            }

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

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

   149 			        pDest++;

   150 			        }

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

   152 			    }

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

   154 			}

   155         pFxf++;

   156         }

   157 	if(widthofi && widthofM)

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

   159 	return(NoError);

   160     }

   161