139 lines
4.6 KiB
C++
139 lines
4.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_BASEBMP_INC_PALETTEFORMATS_HXX
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#define INCLUDED_BASEBMP_INC_PALETTEFORMATS_HXX
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#include <basebmp/color.hxx>
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#include <colortraits.hxx>
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#include <accessor.hxx>
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#include <pixeliterator.hxx>
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#include <packedpixeliterator.hxx>
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#include <pixelformatadapters.hxx>
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#include <paletteimageaccessor.hxx>
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#include <metafunctions.hxx>
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#include <vigra/numerictraits.hxx>
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#include <vigra/metaprogramming.hxx>
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namespace basebmp
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{
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/** Lookup index value for given color value in a PaletteImageAccessor
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*/
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template< class Accessor > struct ColorLookup
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{
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typename Accessor::data_type operator()( const Accessor& acc,
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typename Accessor::value_type v ) const
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{
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return acc.lookup(v);
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}
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};
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// partial specialization of AccessorTraits for PaletteAccessor
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template< class Accessor, typename ColorType > struct AccessorTraits<
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PaletteImageAccessor< Accessor, ColorType > >
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{
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/// value type of described accessor
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typedef typename PaletteImageAccessor< Accessor, ColorType >::value_type value_type;
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/// Retrieve stand-alone color lookup function for given Accessor type
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typedef ColorLookup< PaletteImageAccessor< Accessor, ColorType > > color_lookup;
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/// Retrieve raw pixel data accessor for given Accessor type
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typedef Accessor raw_accessor;
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/** accessor for XOR setter access is disabled, since the results
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* are usually completely unintended - you'll usually want to
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* wrap an xor_accessor with a PaletteAccessor, not the other way
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* around.
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*/
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typedef vigra::VigraFalseType xor_accessor;
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/** accessor for masked setter access is disabled, since the
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* results are usually completely unintended - you'll usually
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* want to wrap a masked_accessor with a PaletteAccessor, not the
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* other way around.
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*/
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template< class MaskAccessor,
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class Iterator,
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class MaskIterator > struct masked_accessor
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{
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typedef vigra::VigraFalseType type;
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};
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};
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template< typename ColorType > struct PaletteAccessorSelector
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{
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template< class Accessor > struct wrap_accessor
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{
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typedef PaletteImageAccessor< Accessor, ColorType > type;
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};
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};
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template< class Iterator,
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class Accessor > struct PixelFormatTraitsTemplate_Palette
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{
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typedef typename Iterator::value_type pixel_type;
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typedef Iterator iterator_type;
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typedef Accessor raw_accessor_type;
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typedef PaletteAccessorSelector<Color> accessor_selector;
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};
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template< int BitsPerPixel,
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bool MsbFirst > struct PixelFormatTraitsTemplate_PackedPalette :
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public PixelFormatTraitsTemplate_Palette<
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PackedPixelIterator< sal_uInt8,
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BitsPerPixel,
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MsbFirst >,
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NonStandardAccessor< sal_uInt8 > >
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{};
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// 1bpp MSB
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typedef PixelFormatTraitsTemplate_PackedPalette<1, true> PixelFormatTraits_PAL1_MSB;
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// 1bpp LSB
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typedef PixelFormatTraitsTemplate_PackedPalette<1, false> PixelFormatTraits_PAL1_LSB;
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// 4bpp MSB
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typedef PixelFormatTraitsTemplate_PackedPalette<4, true> PixelFormatTraits_PAL4_MSB;
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// 4bpp LSB
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typedef PixelFormatTraitsTemplate_PackedPalette<4, false> PixelFormatTraits_PAL4_LSB;
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// 8bpp
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typedef PixelFormatTraitsTemplate_Palette<
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PixelIterator< sal_uInt8 >,
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StandardAccessor< sal_uInt8 > > PixelFormatTraits_PAL8;
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} // namespace basebmp
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#endif // INCLUDED_BASEBMP_INC_PALETTEFORMATS_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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