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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: accumulation.hxx,v $
* $Revision: 1.6 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#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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