/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifndef _WIDORP_HXX
#define _WIDORP_HXX

class SwTxtFrm;

#include "swtypes.hxx"
#include "itrtxt.hxx"
namespace binfilter {

class SwTxtFrmBreak
{
private:
          SwTwips  nRstHeight;
#ifdef VERTICAL_LAYOUT
    SwTwips  nOrigin;
#else
    const SwTwips  nOrigin;
#endif
protected:
    SwTxtFrm *pFrm;
    sal_Bool     bBreak;
    sal_Bool     bKeep;
public:
    SwTxtFrmBreak( SwTxtFrm *pFrm, const SwTwips nRst = 0  );
    sal_Bool IsBreakNow( SwTxtMargin &rLine );

    sal_Bool IsBroken() const   { return bBreak; }
    sal_Bool IsKeepAlways() const { return bKeep; }
          void Keep()               { bKeep = sal_True; }
          void Break()              { bKeep = sal_False; bBreak = sal_True; }

    inline sal_Bool GetKeep() const { return bKeep; }
    inline void SetKeep( const sal_Bool bNew ) { bKeep = bNew; }

    sal_Bool IsInside( SwTxtMargin &rLine ) const;

    // Um Sonderfaelle mit Ftn behandeln zu koennen.
    // Mit SetRstHeight wird dem SwTxtFrmBreak die Resthoehe eingestellt,
    // Um TruncLines() rufen zu koennen, ohne dass IsBreakNow() einen
    // anderen Wert zurueckliefert.
    // Es wird dabei davon ausgegangen, dass rLine auf der letzten Zeile
    // steht, die nicht mehr passt.

#ifdef VERTICAL_LAYOUT
    void SetRstHeight( const SwTxtMargin &rLine )
    {
        if ( !pFrm->IsVertical() )
            nRstHeight = rLine.Y() - nOrigin;
    }
#else
    void SetRstHeight( const SwTxtMargin &rLine ) { nRstHeight = rLine.Y() - nOrigin; }
#endif

    SwTwips GetRstHeight() const { return nRstHeight; }
};

class WidowsAndOrphans : public SwTxtFrmBreak
{
private:
    MSHORT   nWidLines, nOrphLines;

public:
    WidowsAndOrphans( SwTxtFrm *pFrm, const SwTwips nRst = 0,
        sal_Bool bCheckKeep = sal_True );
    sal_Bool FindWidows( SwTxtFrm *pFrm, SwTxtMargin &rLine );
    MSHORT GetWidowsLines() const
    { return nWidLines; }
    MSHORT GetOrphansLines() const
    { return nOrphLines; }
    void ClrOrphLines(){ nOrphLines = 0; }

    sal_Bool FindBreak( SwTxtFrm *pFrm, SwTxtMargin &rLine, sal_Bool bHasToFit );
    sal_Bool WouldFit( SwTxtMargin &rLine, SwTwips &rMaxHeight );
    sal_Bool IsBreakNow( SwTxtMargin &rLine )
    {   return ( rLine.GetLineNr() > nOrphLines ) &&
                 SwTxtFrmBreak::IsBreakNow( rLine ); }
};


} //namespace binfilter
#endif

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