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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: accessoradapters.hxx,v $
*
* $Revision: 1.8 $
*
* last change: $Author: thb $ $Date: 2006-07-06 10:00:39 $
*
* 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_BASEBMP_ACCESSORADAPTERS_HXX
#define INCLUDED_BASEBMP_ACCESSORADAPTERS_HXX
#include <vigra/numerictraits.hxx>
namespace basebmp
{
/** Interpose given accessor's set and get methods with two unary
functors.
@tpl WrappedAccessor
Wrapped type must provide the usual get and set accessor methods,
with the usual signatures (see StandardAccessor for a conforming
example). Furthermore, the type must provide a wrapped typedef
value_type
*/
template< class WrappedAccessor,
typename GetterFunctor,
typename SetterFunctor > class UnaryFunctionAccessorAdapter
{
private:
// we don't derive from wrapped type, to avoid ambiguities
// regarding templatized getter/setter methods.
WrappedAccessor maAccessor;
GetterFunctor maGetterFunctor;
SetterFunctor maSetterFunctor;
public:
typedef typename WrappedAccessor::value_type value_type;
UnaryFunctionAccessorAdapter() :
maAccessor(),
maGetterFunctor(),
maSetterFunctor()
{}
template< class T > explicit UnaryFunctionAccessorAdapter( T accessor ) :
maAccessor( accessor ),
maGetterFunctor(),
maSetterFunctor()
{}
template< class T > UnaryFunctionAccessorAdapter( T accessor,
GetterFunctor getterFunctor,
SetterFunctor setterFunctor) :
maAccessor( accessor ),
maGetterFunctor( getterFunctor ),
maSetterFunctor( setterFunctor )
{}
// -------------------------------------------------------
WrappedAccessor const& getWrappedAccessor() const { return maAccessor; }
WrappedAccessor& getWrappedAccessor() { return maAccessor; }
// -------------------------------------------------------
template< class Iterator >
value_type operator()(Iterator const& i) const
{
return maGetterFunctor( maAccessor(i) );
}
template< class Iterator, class Difference >
value_type operator()(Iterator const& i, Difference const& diff) const
{
return maGetterFunctor( maAccessor(i,diff) );
}
// -------------------------------------------------------
template< typename V, class Iterator >
void set(V const& value, Iterator const& i) const
{
maAccessor.set(
maSetterFunctor(
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
{
maAccessor.set(
maSetterFunctor(
vigra::detail::RequiresExplicitCast<value_type>::cast(value) ));
}
};
//-----------------------------------------------------------------------------
/** Interpose given accessor's set methods with a binary function,
taking both old and new value.
The wrappee's getter methods kept as-is.
@tpl WrappedAccessor
Wrapped type must provide the usual get and set accessor methods,
with the usual signatures (see StandardAccessor for a conforming
example). Furthermore, the type must provide a wrapped typedef
value_type
*/
template< class WrappedAccessor,
typename SetterFunctor > class BinarySetterFunctionAccessorAdapter
{
private:
WrappedAccessor maAccessor;
SetterFunctor maFunctor;
public:
typedef typename WrappedAccessor::value_type value_type;
BinarySetterFunctionAccessorAdapter() :
maAccessor(),
maFunctor()
{}
template< class T > explicit BinarySetterFunctionAccessorAdapter( T accessor ) :
maAccessor( accessor ),
maFunctor()
{}
template< class T > BinarySetterFunctionAccessorAdapter( T accessor,
SetterFunctor functor ) :
maAccessor( accessor ),
maFunctor( functor )
{}
// -------------------------------------------------------
WrappedAccessor const& getWrappedAccessor() const { return maAccessor; }
WrappedAccessor& getWrappedAccessor() { return maAccessor; }
// -------------------------------------------------------
template< class Iterator >
value_type operator()(Iterator const& i) const
{
return maAccessor(i);
}
template< class Iterator, class Difference >
value_type operator()(Iterator const& i, Difference const& diff) const
{
return maAccessor(i,diff);
}
// -------------------------------------------------------
template< typename V, class Iterator >
void set(V const& value, Iterator const& i) const
{
maAccessor.set(
maFunctor(maAccessor(i),
vigra::detail::RequiresExplicitCast<value_type>::cast(value)),
i );
}
template< typename V, class Iterator, class Difference >
void set(V const& value, Iterator const& i, Difference const& diff) const
{
maAccessor.set(
maFunctor(maAccessor(i,diff),
vigra::detail::RequiresExplicitCast<value_type>::cast(value)),
i,
diff );
}
};
//-----------------------------------------------------------------------------
/** Write through a CompositeIterator's first wrapped iterator, by
piping the first wrapped iterator value, the second iterator
value, and the specified new value through a ternary function.
Passed iterator must fulfill the CompositeIterator concept. Note
that the getter/setter methods are not templatized regarding the
iterator type, to make the mask calculation optimization below
safe (see the maskedAccessor template metafunction below)
@tpl WrappedAccessor1
Wrapped type must provide the usual get and set accessor methods,
with the usual signatures (see StandardAccessor for a conforming
example). Furthermore, the type must provide a wrapped typedef
value_type
*/
template< class WrappedAccessor1,
class WrappedAccessor2,
typename Functor > class TernarySetterFunctionAccessorAdapter
{
private:
WrappedAccessor1 ma1stAccessor;
WrappedAccessor2 ma2ndAccessor;
Functor maFunctor;
public:
typedef typename WrappedAccessor1::value_type value_type;
TernarySetterFunctionAccessorAdapter() :
ma1stAccessor(),
ma2ndAccessor(),
maFunctor()
{}
template< class T > explicit TernarySetterFunctionAccessorAdapter( T accessor ) :
ma1stAccessor( accessor ),
ma2ndAccessor(),
maFunctor()
{}
template< class T1, class T2 >
TernarySetterFunctionAccessorAdapter( T1 accessor1,
T2 accessor2 ) :
ma1stAccessor( accessor1 ),
ma2ndAccessor( accessor2 ),
maFunctor()
{}
template< class T1, class T2 >
TernarySetterFunctionAccessorAdapter( T1 accessor1,
T2 accessor2,
Functor func ) :
ma1stAccessor( accessor1 ),
ma2ndAccessor( accessor2 ),
maFunctor( func )
{}
// -------------------------------------------------------
WrappedAccessor1 const& get1stWrappedAccessor() const { return ma1stAccessor; }
WrappedAccessor1& get1stWrappedAccessor() { return ma1stAccessor; }
WrappedAccessor2 const& get2ndWrappedAccessor() const { return ma2ndAccessor; }
WrappedAccessor2& get2ndWrappedAccessor() { return ma2ndAccessor; }
// -------------------------------------------------------
template< class Iterator >
value_type operator()(Iterator const& i) const
{
return ma1stAccessor(i);
}
template< class Iterator, class Difference >
value_type operator()(Iterator const& i, Difference const& diff) const
{
return ma1stAccessor(i,diff);
}
// -------------------------------------------------------
template< typename V, class Iterator >
void set(V const& value, Iterator const& i) const
{
ma1stAccessor.set(
maFunctor(ma1stAccessor(i.first()),
ma2ndAccessor(i.second()),
vigra::detail::RequiresExplicitCast<value_type>::cast(value)),
i.first() );
}
template< typename V, class Iterator, class Difference >
void set(V const& value, Iterator const& i, Difference const& diff) const
{
ma1stAccessor.set(
maFunctor(ma1stAccessor(i.first(), diff),
ma2ndAccessor(i.second(),diff),
vigra::detail::RequiresExplicitCast<value_type>::cast(value)),
i.first(),
diff );
}
};
} // namespace basebmp
#endif /* INCLUDED_BASEBMP_ACCESSORADAPTERS_HXX */
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