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 ************************************************************************/
/*************************************************************************
 * @file
 *  to provide basic utilities for word pro filter
 ************************************************************************/
/*************************************************************************
 * Change History
 Jan 2005           Created
 ************************************************************************/

#ifndef INCLUDED_LOTUSWORDPRO_SOURCE_FILTER_LWPTOOLS_HXX
#define INCLUDED_LOTUSWORDPRO_SOURCE_FILTER_LWPTOOLS_HXX

#include "lwpheader.hxx"
#include "lwpobjstrm.hxx"
#include "localtime.hxx"
#include "xfilter/xfdatestyle.hxx"
#include "xfilter/xftimestyle.hxx"
#include <rtl/textenc.h>
#include <stdexcept>

// 01/19/2005
const sal_uInt32 UNITS_PER_INCH = 65536L * 72L;
const double CM_PER_INCH = 2.54;
const double INCHT_PER_CM = (1.0 / CM_PER_INCH);
//end

const double POINTS_PER_INCH = 72.27;
const double TWIPS_PER_POINT = 20.0;
const double TWIPS_PER_INCH = (TWIPS_PER_POINT * POINTS_PER_INCH);
const double TWIPS_PER_CM = (TWIPS_PER_INCH/CM_PER_INCH);
/**
 * @brief   tool class (unicode, conversion) for lwp filter.
*/
class LwpTools
{

public:
    static sal_uInt16 QuickReadUnicode( LwpObjectStream* pObjStrm,
        OUString& str, sal_uInt16 strlen,  rtl_TextEncoding aEncoding );
    static bool IsUnicodePacked(LwpObjectStream* pObjStrm, sal_uInt16 len);

    inline static double ConvertFromUnits(const sal_Int32& nUnits);
    inline static double ConvertToMetric(const double& fInch);
    inline static double ConvertFromMetric(const double& fCM);
    inline static double ConvertFromUnitsToMetric(const sal_Int32& nUnits);

    inline static sal_Int32 ConvertToUnits(const double& fInch);

    inline static bool IsOddNumber(sal_uInt16& nNumber);
    inline static bool IsEvenNumber(sal_uInt16& nNumber);

    static bool isFileUrl(const OString& fileName);
    static OUString convertToFileUrl(const OString& fileName);
    static OUString    DateTimeToOUString(LtTm& dt);

    static XFDateStyle* GetSystemDateStyle(bool bLongFormat);
    static XFTimeStyle* GetSystemTimeStyle();
};

inline double LwpTools::ConvertFromUnits(const sal_Int32& nUnits)
{
    return (double)nUnits/UNITS_PER_INCH;
}
inline double LwpTools::ConvertToMetric(const double& fInch)
{
    return fInch*CM_PER_INCH;
}
inline double LwpTools::ConvertFromMetric(const double& fCM)
{
    return fCM/CM_PER_INCH;
}
inline double LwpTools::ConvertFromUnitsToMetric(const sal_Int32& nUnits)
{
    double fInch = ConvertFromUnits(nUnits);
    return ConvertToMetric(fInch);
}
inline sal_Int32 LwpTools::ConvertToUnits(const double& fInch)
{
    return (sal_Int32)fInch*UNITS_PER_INCH;
}
inline bool LwpTools::IsOddNumber(sal_uInt16& nNumber)
{
    return (nNumber%2)? sal_True : sal_False;
}
inline bool LwpTools::IsEvenNumber(sal_uInt16& nNumber)
{
    return (nNumber%2)? sal_False : sal_True;
}

class BadSeek : public std::runtime_error
{
public:
    BadSeek() : std::runtime_error("Lotus Word Pro Bad Seek") { }
};

class BadRead: public std::runtime_error
{
public:
    BadRead() : std::runtime_error("Lotus Word Pro Bad Read") { }
};

class BadDecompress : public std::runtime_error
{
public:
    BadDecompress() : std::runtime_error("Lotus Word Pro Bad Decompress") { }
};

#endif

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