office-gobmx/include/basebmp/accessor.hxx
Bjoern Michaelsen b9337e22ce execute move of global headers
see https://gerrit.libreoffice.org/#/c/3367/
and Change-Id: I00c96fa77d04b33a6f8c8cd3490dfcd9bdc9e84a for details

Change-Id: I199a75bc4042af20817265d5ef85b1134a96ff5a
2013-04-23 22:20:31 +02:00

113 lines
3.3 KiB
C++

/* -*- 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_BASEBMP_ACCESSOR_HXX
#define INCLUDED_BASEBMP_ACCESSOR_HXX
#include <vigra/numerictraits.hxx>
namespace basebmp
{
/** Standard accessor type
Accesses the iterator values the standard way (i.e. via
*operator()/operator[])
*/
template<typename ValueType> class StandardAccessor
{
public:
typedef ValueType value_type;
// -------------------------------------------------------
template< class Iterator >
value_type operator()(Iterator const& i) const
{
return *i;
}
template< class Iterator, class Difference >
value_type operator()(Iterator const& i, Difference const& diff) const
{
return i[diff];
}
// -------------------------------------------------------
template< typename V, class Iterator >
void set(V const& value, Iterator const& i) const
{
*i = vigra::detail::RequiresExplicitCast<value_type>::cast(value);
}
template< typename V, class Iterator, class Difference >
void set(V const& value, Iterator const& i, Difference const& diff) const
{
i[diff] = vigra::detail::RequiresExplicitCast<value_type>::cast(value);
}
};
//-----------------------------------------------------------------------------
/** Non-standard accessor type
Uses getter/setter methods at the given iterator type, to access
the underlying values.
*/
template<typename ValueType> class NonStandardAccessor
{
public:
typedef ValueType value_type;
// -------------------------------------------------------
template< class Iterator >
value_type operator()(Iterator const& i) const
{
return i.get();
}
template< class Iterator, class Difference >
value_type operator()(Iterator const& i, Difference const& diff) const
{
return i.get(diff);
}
// -------------------------------------------------------
template< typename V, class Iterator >
void set(V const& value, Iterator const& i) const
{
i.set( vigra::detail::RequiresExplicitCast<value_type>::cast(value) );
}
template< typename V, class Iterator, class Difference >
void set(V const& value, Iterator const& i, Difference const& diff) const
{
i.set( vigra::detail::RequiresExplicitCast<value_type>::cast(value),
diff );
}
};
} // namespace basebmp
#endif /* INCLUDED_BASEBMP_ACCESSOR_HXX */
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */