1 /*

     2 * Copyright (c) 1997-2007 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 

    19 #include "FONTCOMP.H"

    20 

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

    22 	FontRead(aFile,aFontCompiler,aFxf),

    23 	iMapSpace(aMapSpace)

    24 	{}

    25 

    26 int EffRead::ReadFont()

    27     {

    28 	int count=0;

    29 	int version=0;

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

    31 	int bitpos,len1,len2;

    32 	int ReadSize,widToGo;

    33 	int widthofi=0;

    34 	int widthofM=0;

    35 	FcmCharHead* pFxf;

    36 	LetterTableData lettertabledata;

    37 	LetterData letterdata;

    38 	letterdata.blx = 0;

    39 	letterdata.bly = 0;

    40 	letterdata.rWid = 0;

    41 	letterdata.rHgt = 0;

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

    43 	unsigned short int* pDest;

    44 	unsigned short int* pSrc;

    45 	EffVariousData VariousData;

    46 

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

    48 	if(!inBuffer) return(NoMemory);

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

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

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

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

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

    54 	iInputFile.seekg(FontNameOffs);

    55 

    56 	char tmpName[FONT_NAME_LEN+1];

    57 	iInputFile.read(tmpName,FONT_NAME_LEN);

    58 	tmpName[FONT_NAME_LEN]=0;

    59 	strcpy(iFxf->name,tmpName);

    60 	*(iFxf->typeface)=0;

    61 

    62 	iInputFile.seekg(VariousDataOffs);

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

    64 	version=VariousData.version;

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

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

    67 	pFxf=new FcmCharHead[MAX_CHARS];

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

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

    70 	int offset=0;

    71 	int first=1;

    72 	LetterOffsBase=LetterOffs;

    73 	iFxf->descent= -VariousData.bly;

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

    75 	iFxf->UlineThickness=VariousData.UnderLineThickness;

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

    77 	iFxf->MaxChrWidth=0;

    78 	iFxf->cell_height=VariousData.Hgt;

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

    80 		{

    81 		if(iMapSpace)

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

    83 		else

    84 			iInputFile.seekg(LetterOffs);

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

    86 		if(version==1)

    87 			{

    88 			lettertabledata.width>>=4;

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

    90 			LetterOffs+=sizeof(LetterData);

    91 			}

    92 		LetterOffs+=sizeof(LetterTableData);

    93 		iFxf->chr[chNum]=0;

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

    95 //		if(letterdata.offset)

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

    97 			{

    98 			seekpos=LetterOffsBase+lettertabledata.offset;

    99 			iInputFile.seekg(seekpos);

   100 			if(version==2)

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

   102 			if(first)

   103 				{

   104 				iFxf->FirstChr=chNum;

   105 				first=0;

   106 				}

   107 			iFxf->n_chars=chNum+1;

   108 			iFxf->chr[chNum]=pFxf;

   109 			pFxf->offset=offset;

   110 			pFxf->xOffset=letterdata.blx;

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

   112 			pFxf->width=letterdata.rWid;

   113 			if(chNum=='i')

   114 				widthofi=pFxf->width;

   115 			if(chNum=='M')

   116 				widthofM=pFxf->width;

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

   118 			pFxf->height=letterdata.rHgt;

   119 			pFxf->move=lettertabledata.width;

   120 			int chWid=letterdata.rWid;

   121 			if(chWid>iFxf->MaxChrWidth)

   122 			    iFxf->MaxChrWidth=chWid;

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

   124 			iInputFile.read(inBuffer,ReadSize);

   125 			bitpos=0;

   126 			pSrc=(unsigned short int*)inBuffer;

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

   128 			    {

   129 			    pDest=(unsigned short int*)outbuffer;

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

   131 			        {

   132 			        len1=16-bitpos;

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

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

   135 			        if (len1>widToGo)

   136 			            {

   137 			            len1=widToGo;

   138 			            len2=0;

   139 			            }

   140 			        else

   141 			            {

   142 			            pSrc++;

   143 			            if ((len1+bitpos)>widToGo)

   144 			                len2=widToGo-len1;

   145 			            else

   146 			                len2=bitpos;

   147 			            if (len2)

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

   149 			            }

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

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

   152 			        pDest++;

   153 			        }

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

   155 			    }

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

   157 			}

   158         pFxf++;

   159         }

   160 	if(widthofi && widthofM)

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

   162 	return(NoError);

   163     }

   164