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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_SLIDESHOW_ACCUMULATION_HXX
      21             : #define INCLUDED_SLIDESHOW_ACCUMULATION_HXX
      22             : 
      23             : #include <sal/types.h>
      24             : #include <rtl/ustring.hxx>
      25             : 
      26             : 
      27             : namespace slideshow
      28             : {
      29             :     namespace internal
      30             :     {
      31             :         /** Generic accumulation.
      32             : 
      33             :             This template handles value accumulation across repeated
      34             :             effect runs: returned is the end value times the repeat
      35             :             count, plus the current value.
      36             : 
      37             :             @param rEndValue
      38             :             End value of the simple animation.
      39             : 
      40             :             @param nRepeatCount
      41             :             Number of completed repeats (i.e. 0 during the first
      42             :             effect run)
      43             : 
      44             :             @param rCurrValue
      45             :             Current animation value
      46             :          */
      47           0 :         template< typename ValueType > ValueType accumulate( const ValueType&   rEndValue,
      48             :                                                              sal_uInt32         nRepeatCount,
      49             :                                                              const ValueType&   rCurrValue )
      50             :         {
      51           0 :             return nRepeatCount*rEndValue + rCurrValue;
      52             :         }
      53             : 
      54             :         /// Specialization for non-addable enums/constant values
      55           0 :         template<> sal_Int16 accumulate< sal_Int16 >( const sal_Int16&,
      56             :                                                       sal_uInt32,
      57             :                                                       const sal_Int16&  rCurrValue )
      58             :         {
      59             :             // always return rCurrValue, it's forbidden to add enums/constant values...
      60           0 :             return rCurrValue;
      61             :         }
      62             : 
      63             :         /// Specialization for non-addable strings
      64           0 :         template<> ::rtl::OUString accumulate< ::rtl::OUString >( const ::rtl::OUString&,
      65             :                                                                   sal_uInt32,
      66             :                                                                   const ::rtl::OUString&    rCurrValue )
      67             :         {
      68             :             // always return rCurrValue, it's impossible to add strings...
      69           0 :             return rCurrValue;
      70             :         }
      71             : 
      72             :         /// Specialization for non-addable bools
      73           0 :         template<> bool accumulate< bool >( const bool&,
      74             :                                             sal_uInt32,
      75             :                                             const bool&     bCurrValue )
      76             :         {
      77             :             // always return bCurrValue, SMIL spec requires to ignore
      78             :             // cumulative behaviour for bools.
      79           0 :             return bCurrValue;
      80             :         }
      81             :     }
      82             : }
      83             : 
      84             : #endif /* INCLUDED_SLIDESHOW_ACCUMULATION_HXX */
      85             : 
      86             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */