/*

* Copyright (c) 1997-2007 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"

FontCompiler::FontCompiler():

	iInputFile(),

	iOutputFile(),

	iFxf(NULL),

	iFontSpace(NULL),

	iWorkSpace(NULL),

	iMapSpace(NULL),

	iWorkSpaceSize(0),

	iHeaderDataLen(0),

	iHeaderData()

	{}

int FontCompiler::Init(char* infile,char* outfile,char* mapfile)

	{

	if(mapfile)

		{

		iMapSpace=new short int[256];

		if(!iMapSpace) return(NoMemory);

#ifdef __MSVCDOTNET__

		fstream tempfile(mapfile, ios::in | ios::binary);

#else //!__MSVCDOTNET__

		fstream tempfile(mapfile, ios::in | ios::binary);

#endif //__MSVCDOTNET__

		if(!tempfile.is_open())

			return(NoFile);

		tempfile.read((char*)iMapSpace,512);

		tempfile.close();

		}

	iOutputFile.open(outfile, ios::out);

#ifdef __MSVCDOTNET__

	iInputFile.open(infile, ios::in | ios::binary);

#else //!__MSVCDOTNET__

	iInputFile.open(infile, ios::in | ios::binary);

#endif //__MSVCDOTNET__

	if(!(iOutputFile.is_open() && iInputFile.is_open()))

		return(NoFile);

	iFxf=new Fxf;

	if(!iFxf) return(NoMemory);

	iFxf->iBold=0;

	iFxf->iItalic=0;

	iFxf->iProportional=0;

	iFxf->iSerif=0;

	iFxf->iSymbol=0;

	iFxf->iUid=0;

	iFontSpace=new char[0x100000];

	if(!iFontSpace) return(NoMemory);

	return(NoError);

	}

char* FontCompiler::FontStore() const

	{

	return(iFontSpace);

	}

int FontCompiler::Read(FontType aInputType)

	{

	FontRead *read=NULL;

	switch(aInputType)

		{

		case EFontTypeFsc:

			read=new FscRead(iInputFile,*this,iFxf);

			break;

		case EFontTypeEff:

			read=new EffRead(iInputFile,*this,iFxf,iMapSpace);

			break;

		default:

			return(Parameter);

		}

	if(!read)

		return(NoMemory);

	int error=read->ReadFont();

	delete read;

	return(error);

	}

void FontCompiler::RemoveBlankSpace()

	{

	int count=0;

	const int maxbytewidth=(MAX_CHAR_WID+15)>>3;

	unsigned char buf[maxbytewidth];

	unsigned char zbuf[maxbytewidth];

	for(count=0;count<maxbytewidth;count++)

			zbuf[count]=0;

	for(int chNum=iFxf->FirstChr;chNum<iFxf->n_chars;chNum++)

		{

		FcmCharHead *fChar=iFxf->chr[chNum];

		if(fChar)

		    {

		    int LastNonBlank=0;

		    int TopCount=0;

		    int MinLeftBlank=fChar->width;

		    int MinRightBlank=0;

       	    // DEF102183: Graphics tools fail to build using MS VC8.

		    int row;

		    int x;

		    for(row=0;row<fChar->height;)

			{

				memcpy(buf,iFontSpace+fChar->offset+fChar->ByteWid*row,fChar->ByteWid);

			unsigned char bit=1;

			unsigned char* pb=buf;

			for(x=0;x<MinLeftBlank;x++)

			    {

			    if ((*pb)&bit)

				{

				MinLeftBlank=x;

				break;

				}

			    bit<<=1;

			    if (bit==0)

				{

				bit=1;

				pb++;

				}

			    }

			bit=(unsigned char)(1<<((fChar->width-1)%8));

			pb=&buf[((fChar->width-1)>>3)];

			for(x=fChar->width;x>MinRightBlank;x--)

			    {

			    if ((*pb)&bit)

				{

				MinRightBlank=x;

				break;

				}

			    bit>>=1;

			    if (bit==0)

				{

				bit= (unsigned char)0x80;

				pb--;

				}

			    }

			row++;

				if(memcmp(zbuf,buf,fChar->ByteWid))

			    {

			    if (TopCount==0)

				TopCount=row;   /* Count of blank rows at the top */

			    LastNonBlank=row;

			    }

			}

		    if (TopCount==0)

			{

			fChar->height=0;

			fChar->width=0;

			fChar->xOffset=0;

			fChar->yOffset=0;

			}

		    else

			{

			TopCount--;

			fChar->height=LastNonBlank-TopCount;

			fChar->width=MinRightBlank-MinLeftBlank;

			fChar->yOffset-=TopCount;

			fChar->offset+=TopCount*fChar->ByteWid;

			fChar->xOffset+=MinLeftBlank;

			if (MinLeftBlank)

			    {

			    int byte_step=MinLeftBlank/8;

			    int bit_shift=MinLeftBlank%8;

			    unsigned char mask=(unsigned char)(0xFF>>(7-((fChar->width-1)%8)));

			    for(row=0;row<fChar->height;row++)

						{

						memcpy(buf,iFontSpace+fChar->offset+fChar->ByteWid*row,fChar->ByteWid);

						for(x=0;x<(fChar->ByteWid-byte_step);x++)

							buf[x]=(unsigned char)((buf[x+byte_step]>>bit_shift)+

								(buf[x+byte_step+1]<<(8-bit_shift)));

						buf[x-1]&=mask;

						memcpy(iFontSpace+fChar->offset+fChar->ByteWid*row,buf,fChar->ByteWid);

						}

			    }

			}

		    }

		}

	}