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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#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 std::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 */