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/* -*- 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_INC_PALETTEFORMATS_HXX
#define INCLUDED_BASEBMP_INC_PALETTEFORMATS_HXX
#include <basebmp/color.hxx>
#include <colortraits.hxx>
#include <accessor.hxx>
#include <pixeliterator.hxx>
#include <packedpixeliterator.hxx>
#include <pixelformatadapters.hxx>
#include <paletteimageaccessor.hxx>
#include <metafunctions.hxx>
#include <vigra/numerictraits.hxx>
#include <vigra/metaprogramming.hxx>
namespace basebmp
{
/** Lookup index value for given color value in a PaletteImageAccessor
*/
template< class Accessor > struct ColorLookup
{
typename Accessor::data_type operator()( const Accessor& acc,
typename Accessor::value_type v ) const
{
return acc.lookup(v);
}
};
// partial specialization of AccessorTraits for PaletteAccessor
template< class Accessor, typename ColorType > struct AccessorTraits<
PaletteImageAccessor< Accessor, ColorType > >
{
/// value type of described accessor
typedef typename PaletteImageAccessor< Accessor, ColorType >::value_type value_type;
/// Retrieve stand-alone color lookup function for given Accessor type
typedef ColorLookup< PaletteImageAccessor< Accessor, ColorType > > color_lookup;
/// Retrieve raw pixel data accessor for given Accessor type
typedef Accessor raw_accessor;
/** accessor for masked setter access is disabled, since the
* results are usually completely unintended - you'll usually
* want to wrap a masked_accessor with a PaletteAccessor, not the
* other way around.
*/
template< class MaskAccessor,
class Iterator,
class MaskIterator > struct masked_accessor
{
typedef vigra::VigraFalseType type;
};
};
template< typename ColorType > struct PaletteAccessorSelector
{
template< class Accessor > struct wrap_accessor
{
typedef PaletteImageAccessor< Accessor, ColorType > type;
};
};
template< class Iterator,
class Accessor > struct PixelFormatTraitsTemplate_Palette
{
typedef typename Iterator::value_type pixel_type;
typedef Iterator iterator_type;
typedef Accessor raw_accessor_type;
typedef PaletteAccessorSelector<Color> accessor_selector;
};
template< int BitsPerPixel,
bool MsbFirst > struct PixelFormatTraitsTemplate_PackedPalette :
public PixelFormatTraitsTemplate_Palette<
PackedPixelIterator< sal_uInt8,
BitsPerPixel,
MsbFirst >,
NonStandardAccessor< sal_uInt8 > >
{};
// 1bpp MSB
typedef PixelFormatTraitsTemplate_PackedPalette<1, true> PixelFormatTraits_PAL1_MSB;
// 1bpp LSB
typedef PixelFormatTraitsTemplate_PackedPalette<1, false> PixelFormatTraits_PAL1_LSB;
// 4bpp MSB
typedef PixelFormatTraitsTemplate_PackedPalette<4, true> PixelFormatTraits_PAL4_MSB;
// 4bpp LSB
typedef PixelFormatTraitsTemplate_PackedPalette<4, false> PixelFormatTraits_PAL4_LSB;
// 8bpp
typedef PixelFormatTraitsTemplate_Palette<
PixelIterator< sal_uInt8 >,
StandardAccessor< sal_uInt8 > > PixelFormatTraits_PAL8;
} // namespace basebmp
#endif // INCLUDED_BASEBMP_INC_PALETTEFORMATS_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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