/**************************************************************
 * 
 * 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 _SV_GEN_HXX
#define _SV_GEN_HXX

#include "tools/toolsdllapi.h"
#include <tools/solar.h>

#include <limits.h>

class SvStream;

// --------------------
// - Helper functions -
// --------------------

inline long MinMax( long nVal, long nMin, long nMax );
inline long AlignedWidth4Bytes( long nWidthBits );
inline long FRound( double fVal );

// ---------------
// - Inlines -
// ---------------

inline long MinMax( long nVal, long nMin, long nMax )
{
	return( nVal >= nMin ? ( nVal <= nMax ? nVal : nMax ) : nMin );
}

// ------------------------------------------------------------------

inline long AlignedWidth4Bytes( long nWidthBits )
{
	return( ( ( nWidthBits + 31 ) >> 5 ) << 2 );
}

// ------------------------------------------------------------------

inline long FRound( double fVal )
{
	return( fVal > 0.0 ? (long) ( fVal + 0.5 ) : -(long) ( -fVal + 0.5 ) );
}

// --------
// - Pair -
// --------

class Pair
{
public:
	long				nA;
	long				nB;

						Pair();
						Pair( long nA, long nB );

	long				A() const { return nA; }
	long				B() const { return nB; }

	long&				A() { return nA; }
	long&				B() { return nB; }

	sal_Bool				operator == ( const Pair& rPair ) const;
	sal_Bool				operator != ( const Pair& rPair ) const;

	TOOLS_DLLPUBLIC friend SvStream&	operator>>( SvStream& rIStream, Pair& rPair );
	TOOLS_DLLPUBLIC friend SvStream&	operator<<( SvStream& rOStream, const Pair& rPair );
};

inline Pair::Pair()
{
	nA = nB = 0;
}

inline Pair::Pair( long _nA, long _nB )
{
	Pair::nA = _nA;
	Pair::nB = _nB;
}

inline sal_Bool Pair::operator == ( const Pair& rPair ) const
{
	return ((nA == rPair.nA) && (nB == rPair.nB));
}

inline sal_Bool Pair::operator != ( const Pair& rPair ) const
{
	return ((nA != rPair.nA) || (nB != rPair.nB));
}

// ---------
// - Point -
// ---------

class Point : public Pair
{
public:
						Point();
						Point( long nX, long nY );

	long				X() const { return nA; }
	long				Y() const { return nB; }

	long&				X() { return nA; }
	long&				Y() { return nB; }

	void				Move( long nHorzMove, long nVertMove );
	sal_Bool				IsAbove( const Point& rPoint ) const;
	sal_Bool				IsBelow( const Point& rPoint ) const;
	sal_Bool				IsLeft( const Point& rPoint ) const;
	sal_Bool				IsRight( const Point& rPoint ) const;

	Point&				operator += ( const Point& rPoint );
	Point&				operator -= ( const Point& rPoint );
	Point&				operator *= ( const long nVal );
	Point&				operator /= ( const long nVal );

#ifdef __BORLANDC__
	friend Point		operator+( const Point &rVal1, const Point &rVal2 );
	friend Point		operator-( const Point &rVal1, const Point &rVal2 );
	friend Point		operator*( const Point &rVal1, const long nVal2 );
	friend Point		operator/( const Point &rVal1, const long nVal2 );
#else
	friend inline Point operator+( const Point &rVal1, const Point &rVal2 );
	friend inline Point operator-( const Point &rVal1, const Point &rVal2 );
	friend inline Point operator*( const Point &rVal1, const long nVal2 );
	friend inline Point operator/( const Point &rVal1, const long nVal2 );
#endif

	long				getX() const { return X(); }
	long				getY() const { return Y(); }
	void				setX(long nX)  { X() = nX; }
	void				setY(long nY)  { Y() = nY; }
};

inline Point::Point()
{
}

inline Point::Point( long nX, long nY ) : Pair( nX, nY )
{
}

inline void Point::Move( long nHorzMove, long nVertMove )
{
	nA += nHorzMove;
	nB += nVertMove;
}

inline sal_Bool Point::IsAbove( const Point& rPoint ) const
{
	return (nB > rPoint.nB);
}

inline sal_Bool Point::IsBelow( const Point& rPoint ) const
{
	return (nB < rPoint.nB);
}

inline sal_Bool Point::IsLeft( const Point& rPoint ) const
{
	return (nA < rPoint.nA);
}

inline sal_Bool Point::IsRight( const Point& rPoint ) const
{
	return (nA > rPoint.nA);
}

inline Point& Point::operator += ( const Point& rPoint )
{
	nA += rPoint.nA;
	nB += rPoint.nB;
	return *this;
}

inline Point& Point::operator -= ( const Point& rPoint )
{
	nA -= rPoint.nA;
	nB -= rPoint.nB;
	return *this;
}

inline Point& Point::operator *= ( const long nVal )
{
	nA *= nVal;
	nB *= nVal;
	return *this;
}

inline Point& Point::operator /= ( const long nVal )
{
	nA /= nVal;
	nB /= nVal;
	return *this;
}

inline Point operator+( const Point &rVal1, const Point &rVal2 )
{
	return Point( rVal1.nA+rVal2.nA, rVal1.nB+rVal2.nB );
}

inline Point operator-( const Point &rVal1, const Point &rVal2 )
{
	return Point( rVal1.nA-rVal2.nA, rVal1.nB-rVal2.nB );
}

inline Point operator*( const Point &rVal1, const long nVal2 )
{
	return Point( rVal1.nA*nVal2, rVal1.nB*nVal2 );
}

inline Point operator/( const Point &rVal1, const long nVal2 )
{
	return Point( rVal1.nA/nVal2, rVal1.nB/nVal2 );
}

// --------
// - Size -
// --------

class Size : public Pair
{
public:
					Size();
					Size( long nWidth, long nHeight );

	long			Width() const  { return nA; }
	long			Height() const { return nB; }

	long&			Width()  { return nA; }
	long&			Height() { return nB; }

	long				getWidth() const { return Width(); }
	long				getHeight() const { return Height(); }
	void				setWidth(long nWidth)  { Width() = nWidth; }
	void				setHeight(long nHeight)  { Height() = nHeight; }
};

inline Size::Size()
{
}

inline Size::Size( long nWidth, long nHeight ) :
				Pair( nWidth, nHeight )
{
}

// ---------
// - Range -
// ---------

#define RANGE_MIN	LONG_MIN
#define RANGE_MAX	LONG_MAX

class Range : public Pair
{
public:
					Range();
					Range( long nMin, long nMax );

	long			Min() const { return nA; }
	long			Max() const { return nB; }
	long			Len() const { return nB - nA + 1; }

	long&			Min() { return nA; }
	long&			Max() { return nB; }

	sal_Bool			IsInside( long nIs ) const;

	void			Justify();
};

inline Range::Range()
{
}

inline Range::Range( long nMin, long nMax ) : Pair( nMin, nMax )
{
}

inline sal_Bool Range::IsInside( long nIs ) const
{
	return ((nA <= nIs) && (nIs <= nB ));
}

inline void Range::Justify()
{
	if ( nA > nB )
	{
		long nHelp = nA;
		nA = nB;
		nB = nHelp;
	}
}

// -------------
// - Selection -
// -------------

#define SELECTION_MIN	LONG_MIN
#define SELECTION_MAX	LONG_MAX

class Selection : public Pair
{
public:
					Selection();
					Selection( long nPos );
					Selection( long nMin, long nMax );

	long			Min() const { return nA; }
	long			Max() const { return nB; }
	long			Len() const { return nB - nA; }

	long&			Min() { return nA; }
	long&			Max() { return nB; }

	sal_Bool			IsInside( long nIs ) const;

	void			Justify();

	sal_Bool			operator !() const { return !Len(); }

	long				getMin() const { return Min(); }
	long				getMax() const { return Max(); }
	void				setMin(long nMin)  { Min() = nMin; }
	void				setMax(long nMax)  { Max() = nMax; }
};

inline Selection::Selection()
{
}

inline Selection::Selection( long nPos ) : Pair( nPos, nPos )
{
}

inline Selection::Selection( long nMin, long nMax ) :
		   Pair( nMin, nMax )
{
}

inline sal_Bool Selection::IsInside( long nIs ) const
{
	return ((nA <= nIs) && (nIs < nB ));
}

inline void Selection::Justify()
{
	if ( nA > nB )
	{
		long nHelp = nA;
		nA = nB;
		nB = nHelp;
	}
}

// -------------
// - Rectangle -
// -------------

#define RECT_EMPTY	((short)-32767)

class TOOLS_DLLPUBLIC Rectangle
{
public:
	long				nLeft;
	long				nTop;
	long				nRight;
	long				nBottom;

						Rectangle();
						Rectangle( const Point& rLT, const Point& rRB );
						Rectangle( long nLeft, long nTop,
								   long nRight, long nBottom );
						Rectangle( const Point& rLT, const Size& rSize );

	long				Left() const	{ return nLeft;   }
	long				Right() const	{ return nRight;  }
	long				Top() const 	{ return nTop;	  }
	long				Bottom() const	{ return nBottom; }

	long&				Left()			{ return nLeft;   }
	long&				Right() 		{ return nRight;  }
	long&				Top()			{ return nTop;	  }
	long&				Bottom()		{ return nBottom; }

	inline Point				TopLeft() const;
	Point				TopRight() const;
	Point				TopCenter() const;
	Point				BottomLeft() const;
	Point				BottomRight() const;
	Point				BottomCenter() const;
	Point				LeftCenter() const;
	Point				RightCenter() const;
	Point				Center() const;

	void				Move( long nHorzMove, long nVertMove );
    inline void         Transpose();
	inline void			SetPos( const Point& rPoint );
	void				SetSize( const Size& rSize );
	inline Size			GetSize() const;

	long				GetWidth() const;
	long				GetHeight() const;

	Rectangle&			Union( const Rectangle& rRect );
	Rectangle&			Intersection( const Rectangle& rRect );
	Rectangle			GetUnion( const Rectangle& rRect ) const;
	Rectangle			GetIntersection( const Rectangle& rRect ) const;

	void				Justify();

	sal_Bool				IsInside( const Point& rPOINT ) const;
	sal_Bool				IsInside( const Rectangle& rRect ) const;
	sal_Bool				IsOver( const Rectangle& rRect ) const;

	void				SetEmpty() { nRight = nBottom = RECT_EMPTY; }
	sal_Bool				IsEmpty() const;

	sal_Bool				operator == ( const Rectangle& rRect ) const;
	sal_Bool				operator != ( const Rectangle& rRect ) const;

	Rectangle&			operator += ( const Point& rPt );
	Rectangle&			operator -= ( const Point& rPt );

#ifdef __BORLANDC__
	friend Rectangle	operator + ( const Rectangle& rRect, const Point& rPt );
	friend Rectangle	operator - ( const Rectangle& rRect, const Point& rPt );
#else
	friend inline Rectangle operator + ( const Rectangle& rRect, const Point& rPt );
	friend inline Rectangle operator - ( const Rectangle& rRect, const Point& rPt );
#endif

	TOOLS_DLLPUBLIC friend SvStream&	operator>>( SvStream& rIStream, Rectangle& rRect );
	TOOLS_DLLPUBLIC friend SvStream&	operator<<( SvStream& rOStream, const Rectangle& rRect );

	// ONE
	long				getX() const { return nLeft; }
	long				getY() const { return nTop; }
	long				getWidth() const { return nRight - nLeft; }
	long				getHeight() const { return nBottom - nTop; }
	void				setX( long n ) { nRight += n-nLeft; nLeft = n; }
	void				setY( long n ) { nBottom += n-nTop; nTop = n; }
	void				setWidth( long n ) { nRight = nLeft + n; }
	void				setHeight( long n ) { nBottom = nTop + n; }
};

inline Rectangle::Rectangle()
{
	nLeft = nTop = 0;
	nRight = nBottom = RECT_EMPTY;
}

inline Rectangle::Rectangle( const Point& rLT, const Point& rRB )
{
	nLeft	= rLT.X();
	nTop	= rLT.Y();
	nRight	= rRB.X();
	nBottom = rRB.Y();
}

inline Rectangle::Rectangle( long _nLeft,  long _nTop,
							 long _nRight, long _nBottom )
{
	nLeft	= _nLeft;
	nTop	= _nTop;
	nRight	= _nRight;
	nBottom = _nBottom;
}

inline Rectangle::Rectangle( const Point& rLT, const Size& rSize )
{
	nLeft	= rLT.X();
	nTop	= rLT.Y();
	nRight	= rSize.Width()  ? nLeft+rSize.Width()-1 : RECT_EMPTY;
	nBottom = rSize.Height() ? nTop+rSize.Height()-1 : RECT_EMPTY;
}

inline sal_Bool Rectangle::IsEmpty() const
{
	return ((nRight == RECT_EMPTY) || (nBottom == RECT_EMPTY));
}

inline Point Rectangle::TopLeft() const
{
	return Point( nLeft, nTop );
}

inline Point Rectangle::TopRight() const
{
	return Point( (nRight == RECT_EMPTY) ? nLeft : nRight, nTop );
}

inline Point Rectangle::BottomLeft() const
{
	return Point( nLeft, (nBottom == RECT_EMPTY) ? nTop : nBottom );
}

inline Point Rectangle::BottomRight() const
{
	return Point( (nRight  == RECT_EMPTY) ? nLeft : nRight,
				  (nBottom == RECT_EMPTY) ? nTop  : nBottom );
}

inline Point Rectangle::TopCenter() const
{
	if ( IsEmpty() )
		return Point( nLeft, nTop );
	else
		return Point( Min( nLeft, nRight ) + Abs( (nRight - nLeft)/2 ),
					  Min( nTop,  nBottom) );
}

inline Point Rectangle::BottomCenter() const
{
	if ( IsEmpty() )
		return Point( nLeft, nTop );
	else
		return Point( Min( nLeft, nRight ) + Abs( (nRight - nLeft)/2 ),
					  Max( nTop,  nBottom) );
}

inline Point Rectangle::LeftCenter() const
{
	if ( IsEmpty() )
		return Point( nLeft, nTop );
	else
		return Point( Min( nLeft, nRight ), nTop + (nBottom - nTop)/2 );
}

inline Point Rectangle::RightCenter() const
{
	if ( IsEmpty() )
		return Point( nLeft, nTop );
	else
		return Point( Max( nLeft, nRight ), nTop + (nBottom - nTop)/2 );
}

inline Point Rectangle::Center() const
{
	if ( IsEmpty() )
		return Point( nLeft, nTop );
	else
		return Point( nLeft+(nRight-nLeft)/2 , nTop+(nBottom-nTop)/2 );
}

inline void Rectangle::Move( long nHorzMove, long nVertMove )
{
	nLeft += nHorzMove;
	nTop  += nVertMove;
	if ( nRight != RECT_EMPTY )
		nRight += nHorzMove;
	if ( nBottom != RECT_EMPTY )
		nBottom += nVertMove;
}

void Rectangle::Transpose()
{
    if ( !IsEmpty() )
    {
        long swap( nLeft );
        nLeft = nTop;
        nTop = swap;

        swap = nRight;
        nRight = nBottom;
        nBottom = swap;
    }
}

inline void Rectangle::SetPos( const Point& rPoint )
{
	if ( nRight != RECT_EMPTY )
		nRight += rPoint.X() - nLeft;
	if ( nBottom != RECT_EMPTY )
		nBottom += rPoint.Y() - nTop;
	nLeft = rPoint.X();
	nTop  = rPoint.Y();
}

inline long Rectangle::GetWidth() const
{
	long n;
	if ( nRight == RECT_EMPTY )
		n = 0;
	else
	{
		n = nRight - nLeft;
		if( n < 0 )
			n--;
		else
			n++;
	}

	return n;
}

inline long Rectangle::GetHeight() const
{
	long n;
	if ( nBottom == RECT_EMPTY )
		n = 0;
	else
	{
		n = nBottom - nTop;
		if ( n < 0 )
			n--;
		else
			n++;
	}

	return n;
}

inline Size Rectangle::GetSize() const
{
	return Size( GetWidth(), GetHeight() );
}

inline Rectangle Rectangle::GetUnion( const Rectangle& rRect ) const
{
	Rectangle aTmpRect( *this );
	return aTmpRect.Union( rRect );
}

inline Rectangle Rectangle::GetIntersection( const Rectangle& rRect ) const
{
	Rectangle aTmpRect( *this );
	return aTmpRect.Intersection( rRect );
}

inline sal_Bool Rectangle::operator == ( const Rectangle& rRect ) const
{
	return ((nLeft	 == rRect.nLeft   ) &&
			(nTop	 == rRect.nTop	  ) &&
			(nRight  == rRect.nRight  ) &&
			(nBottom == rRect.nBottom ));
}

inline sal_Bool Rectangle::operator != ( const Rectangle& rRect ) const
{
	return ((nLeft	 != rRect.nLeft   ) ||
			(nTop	 != rRect.nTop	  ) ||
			(nRight  != rRect.nRight  ) ||
			(nBottom != rRect.nBottom ));
}

inline Rectangle& Rectangle::operator +=( const Point& rPt )
{
	nLeft += rPt.X();
	nTop  += rPt.Y();
	if ( nRight != RECT_EMPTY )
		nRight += rPt.X();
	if ( nBottom != RECT_EMPTY )
		nBottom += rPt.Y();
	return *this;
}

inline Rectangle& Rectangle::operator -= ( const Point& rPt )
{
	nLeft -= rPt.X();
	nTop  -= rPt.Y();
	if ( nRight != RECT_EMPTY )
		nRight -= rPt.X();
	if ( nBottom != RECT_EMPTY )
		nBottom -= rPt.Y();
	return *this;
}

inline Rectangle operator + ( const Rectangle& rRect, const Point& rPt )
{
	Rectangle aRect( rRect.nLeft  + rPt.X(), rRect.nTop    + rPt.Y(),
					 (rRect.nRight	== RECT_EMPTY) ? RECT_EMPTY : rRect.nRight + rPt.X(),
					 (rRect.nBottom == RECT_EMPTY) ? RECT_EMPTY : rRect.nBottom + rPt.Y() );
	return aRect;
}

inline Rectangle operator - ( const Rectangle& rRect, const Point& rPt )
{
	Rectangle aRect( rRect.nLeft - rPt.X(),
					 rRect.nTop - rPt.Y(),
					 (rRect.nRight	== RECT_EMPTY) ? RECT_EMPTY : rRect.nRight - rPt.X(),
					 (rRect.nBottom == RECT_EMPTY) ? RECT_EMPTY : rRect.nBottom - rPt.Y() );
	return aRect;
}

#endif // _GEN_HXX