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-rw-r--r-- | slideshow/source/engine/activities/accumulation.hxx | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/slideshow/source/engine/activities/accumulation.hxx b/slideshow/source/engine/activities/accumulation.hxx new file mode 100644 index 000000000..02a19815a --- /dev/null +++ b/slideshow/source/engine/activities/accumulation.hxx @@ -0,0 +1,86 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * 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 . + */ + +#ifndef INCLUDED_SLIDESHOW_SOURCE_ENGINE_ACTIVITIES_ACCUMULATION_HXX +#define INCLUDED_SLIDESHOW_SOURCE_ENGINE_ACTIVITIES_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<> OUString accumulate< OUString >( const OUString&, + sal_uInt32, + const 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_SOURCE_ENGINE_ACTIVITIES_ACCUMULATION_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |