b9337e22ce
see https://gerrit.libreoffice.org/#/c/3367/ and Change-Id: I00c96fa77d04b33a6f8c8cd3490dfcd9bdc9e84a for details Change-Id: I199a75bc4042af20817265d5ef85b1134a96ff5a
124 lines
4.4 KiB
C++
124 lines
4.4 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_ACCESSORTRAITS_HXX
|
|
#define INCLUDED_BASEBMP_ACCESSORTRAITS_HXX
|
|
|
|
#include <basebmp/accessorfunctors.hxx>
|
|
#include <basebmp/accessoradapters.hxx>
|
|
#include <basebmp/metafunctions.hxx>
|
|
|
|
#include <functional>
|
|
|
|
namespace basebmp
|
|
{
|
|
|
|
struct FastMask;
|
|
struct NoFastMask;
|
|
|
|
/// Metafunction to select output mask functor from iterator and mask value type
|
|
template< typename T, typename M, bool polarity, typename DUMMY > struct outputMaskFunctorSelector : public
|
|
ifBothScalarIntegral< T, M,
|
|
IntegerOutputMaskFunctor< T, M, polarity >,
|
|
GenericOutputMaskFunctor< T, M, polarity > >
|
|
{
|
|
};
|
|
template< typename T, typename M, bool polarity > struct outputMaskFunctorSelector< T, M, polarity, FastMask > : public
|
|
ifBothScalarIntegral< T, M,
|
|
FastIntegerOutputMaskFunctor< T, M, polarity >,
|
|
GenericOutputMaskFunctor< T, M, polarity > >
|
|
{
|
|
};
|
|
|
|
/** Metafunction providing a point of configuration for iterators
|
|
capable of employing the fast output mask functor.
|
|
|
|
Specialize this metafunction for your case, and pass FastMask to
|
|
the outputMaskFunctorSelector.
|
|
*/
|
|
template< class Accessor,
|
|
class MaskAccessor,
|
|
class Iterator,
|
|
class MaskIterator,
|
|
bool polarity > struct maskedAccessorSelector
|
|
{
|
|
typedef TernarySetterFunctionAccessorAdapter<
|
|
Accessor,
|
|
MaskAccessor,
|
|
typename outputMaskFunctorSelector<
|
|
typename Accessor::value_type,
|
|
typename MaskAccessor::value_type,
|
|
polarity,
|
|
NoFastMask > ::type >
|
|
type;
|
|
};
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
/** Traits template for Accessor
|
|
|
|
Provides wrapped types for color lookup, raw pixel access, xor and
|
|
mask accessors.
|
|
*/
|
|
template< class Accessor > struct AccessorTraits
|
|
{
|
|
/// value type of described accessor
|
|
typedef typename Accessor::value_type value_type;
|
|
|
|
/// Retrieve stand-alone color lookup function for given Accessor type
|
|
typedef project2nd< Accessor, value_type > color_lookup;
|
|
|
|
/// Retrieve raw pixel data accessor for given Accessor type
|
|
typedef Accessor raw_accessor;
|
|
|
|
/// Retrieve wrapped accessor for XOR setter access
|
|
typedef BinarySetterFunctionAccessorAdapter<
|
|
Accessor,
|
|
XorFunctor< value_type > > xor_accessor;
|
|
|
|
/** Retrieve masked accessor for given types
|
|
|
|
A masked accessor works like a filter, where the mask gates
|
|
the accessor's setter methods (if the mask contains a 0 at a
|
|
given iterator position, the original value is
|
|
preserved. Otherwise, the new value gets set).
|
|
|
|
@attention be careful when retrieving a masked accessor for a
|
|
set of types, and using it for a different one - there are
|
|
partial specializations that take an optimized functor for
|
|
certain mask accessors.
|
|
*/
|
|
template< class MaskAccessor,
|
|
class Iterator,
|
|
class MaskIterator,
|
|
bool polarity > struct masked_accessor :
|
|
public maskedAccessorSelector< Accessor,
|
|
MaskAccessor,
|
|
Iterator,
|
|
MaskIterator,
|
|
polarity >
|
|
{};
|
|
|
|
};
|
|
|
|
} // namespace basebmp
|
|
|
|
#endif /* INCLUDED_BASEBMP_ACCESSORTRAITS_HXX */
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|