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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: basicbox.hxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: kz $ $Date: 2005-11-02 13:55:29 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#ifndef _BGFX_RANGE_BASICBOX_HXX
#define _BGFX_RANGE_BASICBOX_HXX
#ifndef _BGFX_RANGE_BASICRANGE_HXX
#include <basegfx/range/basicrange.hxx>
#endif
namespace basegfx
{
/** Specialization of BasicRange, handling the inside predicates
differently.
This template considers the rightmost and bottommost border as
<em>outside</em> of the range, in contrast to BasicRange,
which considers them inside.
*/
class BasicBox : public BasicRange< sal_Int32, Int32Traits >
{
typedef BasicRange< sal_Int32, Int32Traits > Base;
public:
BasicBox() :
Base()
{
}
BasicBox( sal_Int32 nValue ) :
Base( nValue )
{
}
BasicBox(const BasicBox& rBox) :
Base( rBox )
{
}
double getCenter() const
{
if(isEmpty())
{
return 0.0;
}
else
{
return ((mnMaximum + mnMinimum - 1.0) / 2.0);
}
}
using Base::isInside;
bool isInside(sal_Int32 nValue) const
{
if(isEmpty())
{
return false;
}
else
{
return (nValue >= mnMinimum) && (nValue < mnMaximum);
}
}
using Base::overlaps;
bool overlaps(const BasicBox& rBox) const
{
if(isEmpty())
{
return false;
}
else
{
if(rBox.isEmpty())
{
return false;
}
else
{
return !((rBox.mnMaximum <= mnMinimum) || (rBox.mnMinimum >= mnMaximum));
}
}
}
void grow(sal_Int32 nValue)
{
if(!isEmpty())
{
bool bLessThanZero(nValue < 0);
if(nValue > 0 || bLessThanZero)
{
mnMinimum -= nValue;
mnMaximum += nValue;
if(bLessThanZero)
{
// test if range did collapse
if(mnMinimum > mnMaximum)
{
// if yes, collapse to center
mnMinimum = mnMaximum = ((mnMaximum + mnMinimum - 1) / 2);
}
}
}
}
}
};
} // end of namespace basegfx
#endif /* _BGFX_RANGE_BASICBOX_HXX */
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