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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: accumulation.hxx,v $
*
* $Revision: 1.5 $
*
* last change: $Author: obo $ $Date: 2007-07-17 14:43:53 $
*
* 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 INCLUDED_SLIDESHOW_ACCUMULATION_HXX
#define INCLUDED_SLIDESHOW_ACCUMULATION_HXX
#include <sal/types.h>
#include <rtl/ustring.hxx>
namespace slideshow
{
namespace internal
{
/** Generic accumulation.
This template handles value accumulation across repeated
effect runs: returned is the end value times the repeat
count, plus the current value.
@param rEndValue
End value of the simple animation.
@param nRepeatCount
Number of completed repeats (i.e. 0 during the first
effect run)
@param rCurrValue
Current animation value
*/
template< typename ValueType > ValueType accumulate( const ValueType& rEndValue,
sal_uInt32 nRepeatCount,
const ValueType& rCurrValue )
{
return nRepeatCount*rEndValue + rCurrValue;
}
/// Specialization for non-addable enums/constant values
template<> sal_Int16 accumulate< sal_Int16 >( const sal_Int16&,
sal_uInt32,
const sal_Int16& rCurrValue )
{
// always return rCurrValue, it's forbidden to add enums/constant values...
return rCurrValue;
}
/// Specialization for non-addable strings
template<> ::rtl::OUString accumulate< ::rtl::OUString >( const ::rtl::OUString&,
sal_uInt32,
const ::rtl::OUString& rCurrValue )
{
// always return rCurrValue, it's impossible to add strings...
return rCurrValue;
}
/// Specialization for non-addable bools
template<> bool accumulate< bool >( const bool&,
sal_uInt32,
const bool& bCurrValue )
{
// always return bCurrValue, SMIL spec requires to ignore
// cumulative behaviour for bools.
return bCurrValue;
}
}
}
#endif /* INCLUDED_SLIDESHOW_ACCUMULATION_HXX */
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