110 lines
3.3 KiB
C++
110 lines
3.3 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_VCL_INC_IMPOCTREE_HXX
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#define INCLUDED_VCL_INC_IMPOCTREE_HXX
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#include <vcl/BitmapColor.hxx>
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class ImpErrorQuad
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{
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sal_Int16 nRed;
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sal_Int16 nGreen;
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sal_Int16 nBlue;
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public:
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ImpErrorQuad()
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: nRed(0)
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, nGreen(0)
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, nBlue(0)
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{
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}
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ImpErrorQuad(const BitmapColor& rColor)
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: nRed(rColor.GetRed() << 5)
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, nGreen(rColor.GetGreen() << 5)
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, nBlue(rColor.GetBlue() << 5)
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{
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}
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inline void operator=(const BitmapColor& rColor);
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inline ImpErrorQuad& operator-=(const BitmapColor& rColor);
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inline void ImplAddColorError1(const ImpErrorQuad& rErrQuad);
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inline void ImplAddColorError3(const ImpErrorQuad& rErrQuad);
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inline void ImplAddColorError5(const ImpErrorQuad& rErrQuad);
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inline void ImplAddColorError7(const ImpErrorQuad& rErrQuad);
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inline BitmapColor ImplGetColor() const;
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};
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inline void ImpErrorQuad::operator=(const BitmapColor& rColor)
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{
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nRed = rColor.GetRed() << 5;
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nGreen = rColor.GetGreen() << 5;
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nBlue = rColor.GetBlue() << 5;
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}
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inline ImpErrorQuad& ImpErrorQuad::operator-=(const BitmapColor& rColor)
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{
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nRed -= rColor.GetRed() << 5;
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nGreen -= rColor.GetGreen() << 5;
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nBlue -= rColor.GetBlue() << 5;
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return *this;
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}
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inline void ImpErrorQuad::ImplAddColorError1(const ImpErrorQuad& rErrQuad)
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{
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nRed += rErrQuad.nRed >> 4;
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nGreen += rErrQuad.nGreen >> 4;
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nBlue += rErrQuad.nBlue >> 4;
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}
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inline void ImpErrorQuad::ImplAddColorError3(const ImpErrorQuad& rErrQuad)
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{
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nRed += rErrQuad.nRed * 3L >> 4;
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nGreen += rErrQuad.nGreen * 3L >> 4;
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nBlue += rErrQuad.nBlue * 3L >> 4;
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}
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inline void ImpErrorQuad::ImplAddColorError5(const ImpErrorQuad& rErrQuad)
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{
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nRed += rErrQuad.nRed * 5L >> 4;
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nGreen += rErrQuad.nGreen * 5L >> 4;
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nBlue += rErrQuad.nBlue * 5L >> 4;
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}
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inline void ImpErrorQuad::ImplAddColorError7(const ImpErrorQuad& rErrQuad)
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{
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nRed += rErrQuad.nRed * 7L >> 4;
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nGreen += rErrQuad.nGreen * 7L >> 4;
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nBlue += rErrQuad.nBlue * 7L >> 4;
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}
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inline BitmapColor ImpErrorQuad::ImplGetColor() const
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{
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return BitmapColor(std::clamp(nRed, sal_Int16(0), sal_Int16(8160)) >> 5,
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std::clamp(nGreen, sal_Int16(0), sal_Int16(8160)) >> 5,
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std::clamp(nBlue, sal_Int16(0), sal_Int16(8160)) >> 5);
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}
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#endif // INCLUDED_VCL_INC_IMPOCTREE_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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