AOO410/main/starmath/inc/node.hxx

/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/




#ifndef NODE_HXX
#define NODE_HXX


#include <vector>

#include "parse.hxx"
#include "types.hxx"
#include "rect.hxx"
#include "format.hxx"


#define ATTR_BOLD		0x0001
#define ATTR_ITALIC		0x0002

#define FNTSIZ_ABSOLUT	1
#define FNTSIZ_PLUS 	2
#define FNTSIZ_MINUS	3
#define FNTSIZ_MULTIPLY 4
#define FNTSIZ_DIVIDE	5

// flags to interdict respective status changes
#define FLG_FONT		0x0001
#define FLG_SIZE		0x0002
#define FLG_BOLD   		0x0004
#define FLG_ITALIC		0x0008
#define FLG_COLOR		0x0010
#define FLG_VISIBLE		0x0020
#define FLG_HORALIGN	0x0040


extern SmFormat	*pActiveFormat;

class SmDocShell;
class SmNode;
class SmStructureNode;

typedef std::vector< SmNode * > SmNodeArray;
typedef std::vector< SmStructureNode * > SmStructureNodeArray;


////////////////////////////////////////////////////////////////////////////////

enum SmScaleMode	{ SCALE_NONE, SCALE_WIDTH, SCALE_HEIGHT };

enum SmNodeType
{
	NTABLE,			NBRACE,			NBRACEBODY,		NOPER,			NALIGN,
	NATTRIBUT,		NFONT,			NUNHOR,			NBINHOR,		NBINVER,
	NBINDIAGONAL,	NSUBSUP,		NMATRIX,		NPLACE,			NTEXT,
	NSPECIAL,		NGLYPH_SPECIAL,	NMATH,			NBLANK,			NERROR,
    NLINE,          NEXPRESSION,    NPOLYLINE,      NROOT,          NROOTSYMBOL,    
    NRECTANGLE,     NVERTICAL_BRACE
};


////////////////////////////////////////////////////////////////////////////////


class SmNode : public SmRect
{
    SmFace          aFace;

	SmToken			aNodeToken;
	SmNodeType		eType;
	SmScaleMode		eScaleMode;
	RectHorAlign	eRectHorAlign;
	sal_uInt16			nFlags,
					nAttributes;
	sal_Bool			bIsPhantom,
					bIsDebug;
protected:
	SmNode(SmNodeType eNodeType, const SmToken &rNodeToken);

    // index in accessible text -1 if not (yet) applicable
    sal_Int32       nAccIndex;

public:
	virtual 			~SmNode();

    virtual sal_Bool        IsVisible() const;

    virtual sal_uInt16      GetNumSubNodes() const;
    virtual SmNode *    GetSubNode(sal_uInt16 nIndex);
			const SmNode * GetSubNode(sal_uInt16 nIndex) const
			{
				return ((SmNode *) this)->GetSubNode(nIndex);
			}

	virtual SmNode * 	   GetLeftMost();
			const SmNode * GetLeftMost() const
			{
				return ((SmNode *) this)->GetLeftMost();
			}

			sal_uInt16 &	Flags() { return nFlags; }
			sal_uInt16 &	Attributes() { return nAttributes; }

			sal_Bool IsDebug() const { return bIsDebug; }
			sal_Bool IsPhantom() const { return bIsPhantom; }
			void SetPhantom(sal_Bool bIsPhantom);
			void SetColor(const Color &rColor);

			void SetAttribut(sal_uInt16 nAttrib);
			void ClearAttribut(sal_uInt16 nAttrib);

			const SmFace & GetFont() const { return aFace; };
				  SmFace & GetFont()  	   { return aFace; };

			void SetFont(const SmFace &rFace);
			void SetFontSize(const Fraction &rRelSize, sal_uInt16 nType);
			void SetSize(const Fraction &rScale);

	virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell);
	virtual void PrepareAttributes();

#if OSL_DEBUG_LEVEL
			void ToggleDebug() const;
#endif

    void         SetRectHorAlign(RectHorAlign eHorAlign, sal_Bool bApplyToSubTree = sal_True );
	RectHorAlign GetRectHorAlign() const { return eRectHorAlign; }

	const SmRect & GetRect() const { return *this; }
		  SmRect & GetRect() 	   { return *this; }

	virtual void Move(const Point &rPosition);
	void MoveTo(const Point &rPosition) { Move(rPosition - GetTopLeft()); }
	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	virtual void CreateTextFromNode(String &rText);

#ifdef SM_RECT_DEBUG
    using   SmRect::Draw;
#endif
	virtual void Draw(OutputDevice &rDev, const Point &rPosition) const;

    virtual void    GetAccessibleText( String &rText ) const;
    sal_Int32       GetAccessibleIndex() const { return nAccIndex; }
    const SmNode *  FindNodeWithAccessibleIndex(xub_StrLen nAccIndex) const;

	sal_uInt16	GetRow() const	  { return (sal_uInt16)aNodeToken.nRow; }
	sal_uInt16	GetColumn() const { return (sal_uInt16)aNodeToken.nCol; }

	SmScaleMode		GetScaleMode() const { return eScaleMode; }
	void			SetScaleMode(SmScaleMode eMode) { eScaleMode = eMode; }

	virtual void AdaptToX(const OutputDevice &rDev, sal_uLong nWidth);
	virtual void AdaptToY(const OutputDevice &rDev, sal_uLong nHeight);

	SmNodeType		GetType() const  { return eType; }
	const SmToken &	GetToken() const { return aNodeToken; }

	const SmNode *	FindTokenAt(sal_uInt16 nRow, sal_uInt16 nCol) const;
	const SmNode *	FindRectClosestTo(const Point &rPoint) const;

    // --> 4.7.2010 #i972#
    virtual long GetFormulaBaseline() const;
    // <--
};


////////////////////////////////////////////////////////////////////////////////


class SmStructureNode : public SmNode
{
	SmNodeArray  aSubNodes;

protected:
	SmStructureNode(SmNodeType eNodeType, const SmToken &rNodeToken)
	:	SmNode(eNodeType, rNodeToken)
	{}

public:
            SmStructureNode( const SmStructureNode &rNode );
	virtual ~SmStructureNode();

	virtual sal_Bool 		IsVisible() const;

	virtual sal_uInt16		GetNumSubNodes() const;
            void        SetNumSubNodes(sal_uInt16 nSize) { aSubNodes.resize(nSize); }

    using   SmNode::GetSubNode;
	virtual	SmNode * 	GetSubNode(sal_uInt16 nIndex);
            void SetSubNodes(SmNode *pFirst, SmNode *pSecond, SmNode *pThird = NULL);
			void SetSubNodes(const SmNodeArray &rNodeArray);

    virtual SmStructureNode & operator = ( const SmStructureNode &rNode );

    virtual void  GetAccessibleText( String &rText ) const;
};


////////////////////////////////////////////////////////////////////////////////


class SmVisibleNode : public SmNode
{
protected:
	SmVisibleNode(SmNodeType eNodeType, const SmToken &rNodeToken)
	:	SmNode(eNodeType, rNodeToken)
	{}

public:

	virtual sal_Bool 		IsVisible() const;
	virtual	sal_uInt16		GetNumSubNodes() const;
    using   SmNode::GetSubNode;
	virtual	SmNode * 	GetSubNode(sal_uInt16 nIndex);
};


////////////////////////////////////////////////////////////////////////////////


class SmGraphicNode : public SmVisibleNode
{
protected:
	SmGraphicNode(SmNodeType eNodeType, const SmToken &rNodeToken)
	:	SmVisibleNode(eNodeType, rNodeToken)
	{}

public:

    virtual void  GetAccessibleText( String &rText ) const;
};


////////////////////////////////////////////////////////////////////////////////


class SmRectangleNode : public SmGraphicNode
{
	Size  aToSize;

public:
	SmRectangleNode(const SmToken &rNodeToken)
	:	SmGraphicNode(NRECTANGLE, rNodeToken)
	{}

	virtual void AdaptToX(const OutputDevice &rDev, sal_uLong nWidth);
	virtual void AdaptToY(const OutputDevice &rDev, sal_uLong nHeight);

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);

#ifdef SM_RECT_DEBUG
    using   SmRect::Draw;
#endif
	virtual void Draw(OutputDevice &rDev, const Point &rPosition) const;
    
    void CreateTextFromNode(String &rText);
};


////////////////////////////////////////////////////////////////////////////////


class SmPolyLineNode : public SmGraphicNode
{
	Polygon		aPoly;
	Size		aToSize;
	long		nWidth;

public:
	SmPolyLineNode(const SmToken &rNodeToken);

	long		 GetWidth() const { return nWidth; }

	virtual void AdaptToX(const OutputDevice &rDev, sal_uLong nWidth);
	virtual void AdaptToY(const OutputDevice &rDev, sal_uLong nHeight);

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);

#ifdef SM_RECT_DEBUG
    using   SmRect::Draw;
#endif
	virtual void Draw(OutputDevice &rDev, const Point &rPosition) const;
};


////////////////////////////////////////////////////////////////////////////////


class SmTextNode : public SmVisibleNode
{
    XubString   aText;
    sal_uInt16      nFontDesc;

protected:
	SmTextNode(SmNodeType eNodeType, const SmToken &rNodeToken, sal_uInt16 nFontDescP );

public:
	SmTextNode(const SmToken &rNodeToken, sal_uInt16 nFontDescP );

	sal_uInt16				GetFontDesc() const { return nFontDesc; }
	void				SetText(const XubString &rText) { aText = rText; }
	const XubString &	GetText() const { return aText; }

	virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell);
	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	virtual void CreateTextFromNode(String &rText);

#ifdef SM_RECT_DEBUG
    using   SmRect::Draw;
#endif
	virtual void Draw(OutputDevice &rDev, const Point &rPosition) const;

    virtual void  GetAccessibleText( String &rText ) const;
};


////////////////////////////////////////////////////////////////////////////////


class SmSpecialNode : public SmTextNode
{
    bool    bIsFromGreekSymbolSet;

protected:
    SmSpecialNode(SmNodeType eNodeType, const SmToken &rNodeToken, sal_uInt16 _nFontDesc);

public:
	SmSpecialNode(const SmToken &rNodeToken);

	virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell);
	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);

#ifdef SM_RECT_DEBUG
    using   SmRect::Draw;
#endif
	virtual void Draw(OutputDevice &rDev, const Point &rPosition) const;
};


////////////////////////////////////////////////////////////////////////////////


class SmGlyphSpecialNode : public SmSpecialNode
{
public:
	SmGlyphSpecialNode(const SmToken &rNodeToken)
	:	SmSpecialNode(NGLYPH_SPECIAL, rNodeToken, FNT_MATH)
	{}

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


////////////////////////////////////////////////////////////////////////////////


class SmMathSymbolNode : public SmSpecialNode
{
protected:
	SmMathSymbolNode(SmNodeType eNodeType, const SmToken &rNodeToken)
	:	SmSpecialNode(eNodeType, rNodeToken, FNT_MATH)
    {
        xub_Unicode cChar = GetToken().cMathChar;
        if ((xub_Unicode) '\0' != cChar)
            SetText( cChar );
    }

public:
	SmMathSymbolNode(const SmToken &rNodeToken);

	virtual void AdaptToX(const OutputDevice &rDev, sal_uLong nWidth);
	virtual void AdaptToY(const OutputDevice &rDev, sal_uLong nHeight);

	virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell);
	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	void CreateTextFromNode(String &rText);
};


////////////////////////////////////////////////////////////////////////////////


class SmRootSymbolNode : public SmMathSymbolNode
{
    sal_uLong  nBodyWidth;  // width of body (argument) of root sign

public:
    SmRootSymbolNode(const SmToken &rNodeToken)
    :   SmMathSymbolNode(NROOTSYMBOL, rNodeToken)
    {}

    virtual void AdaptToX(const OutputDevice &rDev, sal_uLong nWidth);
    virtual void AdaptToY(const OutputDevice &rDev, sal_uLong nHeight);

#ifdef SM_RECT_DEBUG
    using   SmRect::Draw;
#endif
    virtual void Draw(OutputDevice &rDev, const Point &rPosition) const;
};


////////////////////////////////////////////////////////////////////////////////


class SmPlaceNode : public SmMathSymbolNode
{
public:
	SmPlaceNode(const SmToken &rNodeToken)
	:	SmMathSymbolNode(NPLACE, rNodeToken)
	{
	}

	virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell);
	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


////////////////////////////////////////////////////////////////////////////////


class SmErrorNode : public SmMathSymbolNode
{
public:
    SmErrorNode(SmParseError /*eError*/, const SmToken &rNodeToken)
	:	SmMathSymbolNode(NERROR, rNodeToken)
	{
		SetText((xub_Unicode) MS_ERROR);
	}

	virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell);
	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


////////////////////////////////////////////////////////////////////////////////


class SmTableNode : public SmStructureNode
{
    // --> 4.7.2010 #i972#
    long nFormulaBaseline;
    // <--
public:
	SmTableNode(const SmToken &rNodeToken)
	:	SmStructureNode(NTABLE, rNodeToken)
	{}

    using   SmNode::GetLeftMost;
	virtual SmNode * GetLeftMost();

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
    virtual long GetFormulaBaseline() const;
};


////////////////////////////////////////////////////////////////////////////////


class SmLineNode : public SmStructureNode
{
	sal_Bool  bUseExtraSpaces;

protected:
	SmLineNode(SmNodeType eNodeType, const SmToken &rNodeToken)
	:	SmStructureNode(eNodeType, rNodeToken)
	{
		bUseExtraSpaces = sal_True;
	}

public:
	SmLineNode(const SmToken &rNodeToken)
	:	SmStructureNode(NLINE, rNodeToken)
	{
		bUseExtraSpaces = sal_True;
	}

	void  SetUseExtraSpaces(sal_Bool bVal) { bUseExtraSpaces = bVal; }
	sal_Bool  IsUseExtraSpaces() const { return bUseExtraSpaces; };

	virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell);
	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


////////////////////////////////////////////////////////////////////////////////


class SmExpressionNode : public SmLineNode
{
public:
	SmExpressionNode(const SmToken &rNodeToken)
	:	SmLineNode(NEXPRESSION, rNodeToken)
	{}

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	void CreateTextFromNode(String &rText);
};


////////////////////////////////////////////////////////////////////////////////


class SmUnHorNode : public SmStructureNode
{
public:
	SmUnHorNode(const SmToken &rNodeToken)
	:	SmStructureNode(NUNHOR, rNodeToken)
	{
		SetNumSubNodes(2);
	}

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


////////////////////////////////////////////////////////////////////////////////


class SmRootNode : public SmStructureNode
{
protected:
	void   GetHeightVerOffset(const SmRect &rRect,
							  long &rHeight, long &rVerOffset) const;
	Point  GetExtraPos(const SmRect &rRootSymbol, const SmRect &rExtra) const;

public:
	SmRootNode(const SmToken &rNodeToken)
	:	SmStructureNode(NROOT, rNodeToken)
	{
		SetNumSubNodes(3);
	}

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	void CreateTextFromNode(String &rText);
};


////////////////////////////////////////////////////////////////////////////////


class SmBinHorNode : public SmStructureNode
{
public:
	SmBinHorNode(const SmToken &rNodeToken)
	:	SmStructureNode(NBINHOR, rNodeToken)
	{
		SetNumSubNodes(3);
	}

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


////////////////////////////////////////////////////////////////////////////////


class SmBinVerNode : public SmStructureNode
{
public:
	SmBinVerNode(const SmToken &rNodeToken)
	:	SmStructureNode(NBINVER, rNodeToken)
	{
		SetNumSubNodes(3);
	}

    using   SmNode::GetLeftMost;
	virtual SmNode * GetLeftMost();

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	void CreateTextFromNode(String &rText);
};


////////////////////////////////////////////////////////////////////////////////


class SmBinDiagonalNode : public SmStructureNode
{
	sal_Bool	bAscending;

	void 	GetOperPosSize(Point &rPos, Size &rSize,
						   const Point &rDiagPoint, double fAngleDeg) const;

public:
	SmBinDiagonalNode(const SmToken &rNodeToken);

	sal_Bool 	IsAscending() const { return bAscending; }
	void 	SetAscending(sal_Bool bVal)  { bAscending = bVal; }

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


////////////////////////////////////////////////////////////////////////////////


// enums used to index sub-/supscripts in the 'aSubNodes' array
// in 'SmSubSupNode'
// See graphic for positions at char:
//
//		CSUP
//
// LSUP H  H RSUP
//		H  H
//		HHHH
//		H  H
// LSUB H  H RSUB
//
//		CSUB
//
enum SmSubSup
{	CSUB, CSUP, RSUB, RSUP, LSUB, LSUP
};

// numbers of entries in the above enum (that is: the number of possible
// sub-/supscripts)
#define SUBSUP_NUM_ENTRIES 6


class SmSubSupNode : public SmStructureNode
{
	sal_Bool  bUseLimits;

public:
	SmSubSupNode(const SmToken &rNodeToken)
	:	SmStructureNode(NSUBSUP, rNodeToken)
	{
		SetNumSubNodes(1 + SUBSUP_NUM_ENTRIES);
		bUseLimits = sal_False;
	}

	SmNode *	   GetBody()	{ return GetSubNode(0); }
	const SmNode * GetBody() const
	{
		return ((SmSubSupNode *) this)->GetBody();
	}

	void  SetUseLimits(sal_Bool bVal) { bUseLimits = bVal; }
	sal_Bool  IsUseLimits() const { return bUseLimits; };

    SmNode * GetSubSup(SmSubSup eSubSup) { return GetSubNode( sal::static_int_cast< sal_uInt16 >(1 + eSubSup) ); };

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	void CreateTextFromNode(String &rText);

};


////////////////////////////////////////////////////////////////////////////////


class SmBraceNode : public SmStructureNode
{
public:
	SmBraceNode(const SmToken &rNodeToken)
	:	SmStructureNode(NBRACE, rNodeToken)
	{
		SetNumSubNodes(3);
	}

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	void CreateTextFromNode(String &rText);
};


////////////////////////////////////////////////////////////////////////////////


class SmBracebodyNode : public SmStructureNode
{
	long  nBodyHeight;

public:
	inline SmBracebodyNode(const SmToken &rNodeToken);

	virtual void	Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	long		    GetBodyHeight() const { return nBodyHeight; }
};


inline SmBracebodyNode::SmBracebodyNode(const SmToken &rNodeToken) :
	SmStructureNode(NBRACEBODY, rNodeToken)
{
	nBodyHeight = 0;
}


////////////////////////////////////////////////////////////////////////////////


class SmVerticalBraceNode : public SmStructureNode
{
public:
	inline SmVerticalBraceNode(const SmToken &rNodeToken);

	virtual void	Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


inline SmVerticalBraceNode::SmVerticalBraceNode(const SmToken &rNodeToken) :
	SmStructureNode(NVERTICAL_BRACE, rNodeToken)
{
	SetNumSubNodes(3);
}


////////////////////////////////////////////////////////////////////////////////


class SmOperNode : public SmStructureNode
{
public:
	SmOperNode(const SmToken &rNodeToken)
	:	SmStructureNode(NOPER, rNodeToken)
	{
		SetNumSubNodes(2);
	}

	SmNode *	   GetSymbol();
	const SmNode * GetSymbol() const
	{
		return ((SmOperNode *) this)->GetSymbol();
	}

	long CalcSymbolHeight(const SmNode &rSymbol, const SmFormat &rFormat) const;

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


////////////////////////////////////////////////////////////////////////////////


class SmAlignNode : public SmStructureNode
{
public:
	SmAlignNode(const SmToken &rNodeToken)
	:	SmStructureNode(NALIGN, rNodeToken)
	{}

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


////////////////////////////////////////////////////////////////////////////////


class SmAttributNode : public SmStructureNode
{
public:
	SmAttributNode(const SmToken &rNodeToken)
	:	SmStructureNode(NATTRIBUT, rNodeToken)
	{}

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	void CreateTextFromNode(String &rText);
};


////////////////////////////////////////////////////////////////////////////////


class SmFontNode : public SmStructureNode
{
	sal_uInt16		nSizeType;
	Fraction	aFontSize;

public:
	SmFontNode(const SmToken &rNodeToken)
	:	SmStructureNode(NFONT, rNodeToken)
	{
		nSizeType = FNTSIZ_MULTIPLY;
		aFontSize = Fraction(1L);
	}

	void SetSizeParameter(const Fraction &rValue, sal_uInt16 nType);
	const Fraction & GetSizeParameter() const {return aFontSize;}
	const sal_uInt16& GetSizeType() const {return nSizeType;}

	virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell);
	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	void CreateTextFromNode(String &rText);
};


////////////////////////////////////////////////////////////////////////////////


class SmMatrixNode : public SmStructureNode
{
	sal_uInt16	nNumRows,
			nNumCols;

public:
	SmMatrixNode(const SmToken &rNodeToken)
	:	SmStructureNode(NMATRIX, rNodeToken)
	{
		nNumRows = nNumCols = 0;
	}

	sal_uInt16 GetNumRows() const {return nNumRows;}
	sal_uInt16 GetNumCols() const {return nNumCols;}
	void SetRowCol(sal_uInt16 nMatrixRows, sal_uInt16 nMatrixCols);

    using   SmNode::GetLeftMost;
	virtual SmNode * GetLeftMost();

	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
	void CreateTextFromNode(String &rText);
};


////////////////////////////////////////////////////////////////////////////////


class SmBlankNode : public SmGraphicNode
{
	sal_uInt16	nNum;

public:
	SmBlankNode(const SmToken &rNodeToken)
	:	SmGraphicNode(NBLANK, rNodeToken)
	{
		nNum = 0;
	}

	void         IncreaseBy(const SmToken &rToken);
	void		 Clear() { nNum = 0; }

	virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell);
	virtual void Arrange(const OutputDevice &rDev, const SmFormat &rFormat);
};


////////////////////////////////////////////////////////////////////////////////

#endif