/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
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 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
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 ************************************************************************/
#ifndef _PORRST_HXX
#define _PORRST_HXX
#include "porlay.hxx"
#include "porexp.hxx"

#define LINE_BREAK_WIDTH        150
#define SPECIAL_FONT_HEIGHT     200

class SwTxtFormatInfo;

/*************************************************************************
 *						class SwTmpEndPortion
 *************************************************************************/

class SwTmpEndPortion : public SwLinePortion
{
public:
            SwTmpEndPortion( const SwLinePortion &rPortion );
    virtual void Paint( const SwTxtPaintInfo &rInf ) const;
    OUTPUT_OPERATOR
};

/*************************************************************************
 *						class SwBreakPortion
 *************************************************************************/

class SwBreakPortion : public SwLinePortion
{
public:
            SwBreakPortion( const SwLinePortion &rPortion );
    // liefert 0 zurueck, wenn keine Nutzdaten enthalten sind.
    virtual SwLinePortion *Compress();
    virtual void Paint( const SwTxtPaintInfo &rInf ) const;
    virtual sal_Bool Format( SwTxtFormatInfo &rInf );
    virtual KSHORT GetViewWidth( const SwTxtSizeInfo &rInf ) const;
    virtual xub_StrLen GetCrsrOfst( const MSHORT nOfst ) const;

    // Accessibility: pass information about this portion to the PortionHandler
    virtual void HandlePortion( SwPortionHandler& rPH ) const;

    OUTPUT_OPERATOR
};

/*************************************************************************
 *						class SwKernPortion
 *************************************************************************/

class SwKernPortion : public SwLinePortion
{
    short nKern;
    sal_Bool bBackground;
    sal_Bool bGridKern;

public:

    // This constructor automatically appends the portion to rPortion
    // bBG indicates, that the background of the kerning portion has to
    // be painted, e.g., if the portion if positioned between to fields.
    // bGridKern indicates, that the kerning portion is used to provide
    // additional space in grid mode.
    SwKernPortion( SwLinePortion &rPortion, short nKrn,
                   sal_Bool bBG = sal_False, sal_Bool bGridKern = sal_False );

    // This constructor only sets the height and ascent to the values
    // of rPortion. It is only used for kerning portions for grid mode
    SwKernPortion( const SwLinePortion &rPortion );

    virtual void FormatEOL( SwTxtFormatInfo &rInf );
    virtual void Paint( const SwTxtPaintInfo &rInf ) const;

    OUTPUT_OPERATOR
};

/*************************************************************************
 *						class SwArrowPortion
 *************************************************************************/

class SwArrowPortion : public SwLinePortion
{
    Point aPos;
    sal_Bool bLeft;
public:
            SwArrowPortion( const SwLinePortion &rPortion );
            SwArrowPortion( const SwTxtPaintInfo &rInf );
    virtual void Paint( const SwTxtPaintInfo &rInf ) const;
    virtual SwLinePortion *Compress();
    inline sal_Bool IsLeft() const { return bLeft; }
    inline const Point& GetPos() const { return aPos; }
    OUTPUT_OPERATOR
};

/*************************************************************************
 *						class SwHangingPortion
 * The characters which are forbidden at the start of a line like the dot and
 * other punctuation marks are allowed to display in the margin of the page
 * by a user option.
 * The SwHangingPortion is the corresponding textportion to do that.
 *************************************************************************/

class SwHangingPortion : public SwTxtPortion
{
    KSHORT nInnerWidth;
public:
    inline SwHangingPortion( SwPosSize aSize ) : nInnerWidth( aSize.Width() )
        { SetWhichPor( POR_HNG );  SetLen( 1 ); Height( aSize.Height() ); }

    inline KSHORT GetInnerWidth() const { return nInnerWidth; }
};

/*************************************************************************
 *                      class SwHiddenTextPortion
 * Is used to hide text
 *************************************************************************/

class SwHiddenTextPortion : public SwLinePortion
{
public:
    inline SwHiddenTextPortion( xub_StrLen nLen )
        { SetWhichPor( POR_HIDDEN_TXT );  SetLen( nLen ); }

    virtual void Paint( const SwTxtPaintInfo &rInf ) const;
    virtual sal_Bool Format( SwTxtFormatInfo &rInf );
};

/*************************************************************************
 *                      class SwControlCharPortion
 *************************************************************************/

class SwControlCharPortion : public SwLinePortion
{

private:
    mutable sal_uInt16 mnViewWidth;            // used to cache a calculated value
    mutable sal_uInt16 mnHalfCharWidth;        // used to cache a calculated value
    sal_Unicode mcChar;

public:

    inline SwControlCharPortion( sal_Unicode cChar )
        : mnViewWidth( 0 ), mnHalfCharWidth( 0 ), mcChar( cChar )
    {
        SetWhichPor( POR_CONTROLCHAR ); SetLen( 1 );
    }

    virtual void Paint( const SwTxtPaintInfo &rInf ) const;
    virtual sal_Bool Format( SwTxtFormatInfo &rInf );
    virtual KSHORT GetViewWidth( const SwTxtSizeInfo& rInf ) const;
};



/*************************************************************************
 *					inline - Implementations
 *************************************************************************/

CLASSIO( SwBreakPortion )
CLASSIO( SwEndPortion )
CLASSIO( SwKernPortion )
CLASSIO( SwArrowPortion )

#endif

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