    /* -*- 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_TOOLS_COLOR_HXX
    #define INCLUDED_TOOLS_COLOR_HXX

    #include <sal/types.h>
    #include <tools/toolsdllapi.h>
    #include <com/sun/star/uno/Any.hxx>
    #include <basegfx/color/bcolor.hxx>

    class SvStream;

    constexpr sal_uInt8  COLORDATA_RED( sal_uInt32 n )          { return static_cast<sal_uInt8>(n>>16); }
    constexpr sal_uInt8  COLORDATA_GREEN( sal_uInt32 n )        { return static_cast<sal_uInt8>(static_cast<sal_uInt16>(n) >> 8); }
    constexpr sal_uInt8  COLORDATA_BLUE( sal_uInt32 n )         { return static_cast<sal_uInt8>(n); }
    constexpr sal_uInt8  COLORDATA_TRANSPARENCY( sal_uInt32 n ) { return static_cast<sal_uInt8>(n>>24); }
    constexpr sal_uInt32 COLORDATA_RGB( sal_uInt32 n )          { return static_cast<sal_uInt32>(n & 0x00FFFFFF); }

    // Color

    class SAL_WARN_UNUSED TOOLS_DLLPUBLIC Color final
    {
        sal_uInt32 mnColor;

    public:
        constexpr Color()
            : mnColor(0) // black
        {}
        constexpr Color(sal_uInt32 nColor)
            : mnColor(nColor)
        {}
        constexpr Color(sal_uInt8 nTransparency, sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue)
            : mnColor( sal_uInt32(nBlue) | (sal_uInt32(nGreen) << 8) | (sal_uInt32(nRed) << 16)
                       | (sal_uInt32(nTransparency) << 24) )
        {}
        constexpr Color(sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue)
            : Color(0, nRed, nGreen, nBlue)
        {}

        // constructor to create a tools-Color from ::basegfx::BColor
        explicit Color(const basegfx::BColor& rBColor)
            : Color(0,
                    sal_uInt8((rBColor.getRed() * 255.0) + 0.5),
                    sal_uInt8((rBColor.getGreen() * 255.0) + 0.5),
                    sal_uInt8((rBColor.getBlue() * 255.0) + 0.5))
        {}

        /** Primarily used when passing Color objects to UNO API */
        constexpr explicit operator sal_uInt32() const
        {
            return mnColor;
        }

        constexpr explicit operator sal_Int32() const
        {
            return sal_Int32(mnColor);
        }

        bool operator<(const Color& b) const
        {
            return mnColor < b.mnColor;
        }

        void SetRed(sal_uInt8 nRed);
        sal_uInt8 GetRed() const
        {
            return COLORDATA_RED(mnColor);
        }
        void SetGreen(sal_uInt8 nGreen);
        sal_uInt8 GetGreen() const
        {
            return COLORDATA_GREEN(mnColor);
        }
        void SetBlue(sal_uInt8 nBlue);
        sal_uInt8 GetBlue() const
        {
            return COLORDATA_BLUE(mnColor);
        }
        void SetTransparency(sal_uInt8 nTransparency);
        sal_uInt8 GetTransparency() const
        {
            return COLORDATA_TRANSPARENCY(mnColor);
        }

        Color GetRGBColor() const
        {
            return COLORDATA_RGB(mnColor);
        }

        sal_uInt8 GetColorError(const Color& rCompareColor) const;

        sal_uInt8 GetLuminance() const;
        void IncreaseLuminance(sal_uInt8 cLumInc);
        void DecreaseLuminance(sal_uInt8 cLumDec);

        void DecreaseContrast(sal_uInt8 cContDec);

        /**
         * Apply tint or shade to a color.
         *
         * The input value is the percentage (in 100th of percent) of how much the
         * color changes towards the black (shade) or white (tint). If the value
         * is positive, the color is tinted, if the value is negative, the color is
         * shaded.
         **/
        void ApplyTintOrShade(sal_Int16 n100thPercent);

        void Invert();

        void Merge(const Color& rMergeColor, sal_uInt8 cTransparency);

        bool IsRGBEqual(const Color& rColor) const;

        // comparison with luminance thresholds
        bool IsDark() const;
        bool IsBright() const;

        // color space conversion tools
        // the range for h/s/b is:
        // Hue: 0-360 degree
        // Saturation: 0-100%
        // Brightness: 0-100%
        static Color HSBtoRGB(sal_uInt16 nHue, sal_uInt16 nSaturation, sal_uInt16 nBrightness);
        void RGBtoHSB(sal_uInt16& nHue, sal_uInt16& nSaturation, sal_uInt16& nBrightness) const;

        bool operator==(const Color& rColor) const
        {
            return mnColor == rColor.mnColor;
        }
        bool operator!=(const Color& rColor) const
        {
            return !(Color::operator==(rColor));
        }

        SvStream& Read(SvStream& rIStream);
        SvStream& Write(SvStream& rOStream) const;

        TOOLS_DLLPUBLIC friend SvStream& ReadColor(SvStream& rIStream, Color& rColor);
        TOOLS_DLLPUBLIC friend SvStream& WriteColor(SvStream& rOStream, const Color& rColor);

        // Return color as RGB hex string
        // for example "00ff00" for green color
        OUString AsRGBHexString() const;

        // get ::basegfx::BColor from this color
        basegfx::BColor getBColor() const
        {
            return basegfx::BColor(GetRed() / 255.0, GetGreen() / 255.0, GetBlue() / 255.0);
        }
    };

    inline void Color::SetRed( sal_uInt8 nRed )
    {
        mnColor &= 0xFF00FFFF;
        mnColor |= static_cast<sal_uInt32>(nRed)<<16;
    }

    inline void Color::SetGreen( sal_uInt8 nGreen )
    {
        mnColor &= 0xFFFF00FF;
        mnColor |= static_cast<sal_uInt16>(nGreen)<<8;
    }

    inline void Color::SetBlue( sal_uInt8 nBlue )
    {
        mnColor &= 0xFFFFFF00;
        mnColor |= nBlue;
    }

    inline void Color::SetTransparency( sal_uInt8 nTransparency )
    {
        mnColor &= 0x00FFFFFF;
        mnColor |= static_cast<sal_uInt32>(nTransparency)<<24;
    }

    inline bool Color::IsRGBEqual( const Color& rColor ) const
    {
        return COLORDATA_RGB( mnColor ) == COLORDATA_RGB(rColor.mnColor);
    }

    inline sal_uInt8 Color::GetLuminance() const
    {
        return static_cast<sal_uInt8>((COLORDATA_BLUE(mnColor) * 29UL +
                                       COLORDATA_GREEN(mnColor) * 151UL +
                                       COLORDATA_RED(mnColor) * 76UL) >> 8);
    }

    constexpr sal_uInt8 ColorChannelMerge(sal_uInt8 nDst, sal_uInt8 nSrc, sal_uInt8 nSrcTrans)
    {
        return static_cast<sal_uInt8>(((static_cast<sal_Int32>(nDst)-nSrc)*nSrcTrans+((nSrc<<8)|nDst))>>8);
    };

    inline void Color::Merge( const Color& rMergeColor, sal_uInt8 cTransparency )
    {
        SetRed(ColorChannelMerge(COLORDATA_RED(mnColor), COLORDATA_RED(rMergeColor.mnColor), cTransparency));
        SetGreen(ColorChannelMerge(COLORDATA_GREEN(mnColor), COLORDATA_GREEN(rMergeColor.mnColor), cTransparency));
        SetBlue(ColorChannelMerge(COLORDATA_BLUE(mnColor), COLORDATA_BLUE(rMergeColor.mnColor), cTransparency));
    }

    // to reduce the noise when moving these into and out of Any
    inline bool operator >>=( const css::uno::Any & rAny, Color & value )
    {
      sal_Int32 nTmp;
      if (!(rAny >>= nTmp))
          return false;
      value = Color(nTmp);
      return true;
    }
    inline void operator <<=( css::uno::Any & rAny, Color value )
    {
        rAny <<= sal_Int32(value);
    }
    namespace com { namespace sun { namespace star { namespace uno {
        template<>
        inline Any makeAny( Color const & value )
        {
            return Any(sal_Int32(value));
        }
    } } } }

    // Color types

    constexpr ::Color COL_BLACK                   ( 0x00, 0x00, 0x00 );
    constexpr ::Color COL_BLUE                    ( 0x00, 0x00, 0x80 );
    constexpr ::Color COL_GREEN                   ( 0x00, 0x80, 0x00 );
    constexpr ::Color COL_CYAN                    ( 0x00, 0x80, 0x80 );
    constexpr ::Color COL_RED                     ( 0x80, 0x00, 0x00 );
    constexpr ::Color COL_RED_FONTCOLOR           ( 0xCE, 0x18, 0x1E );
    constexpr ::Color COL_MAGENTA                 ( 0x80, 0x00, 0x80 );
    constexpr ::Color COL_BROWN                   ( 0x80, 0x80, 0x00 );
    constexpr ::Color COL_GRAY                    ( 0x80, 0x80, 0x80 );
    constexpr ::Color COL_GRAY3                   ( 0xCC, 0xCC, 0xCC );
    constexpr ::Color COL_GRAY7                   ( 0x66, 0x66, 0x66 );
    constexpr ::Color COL_LIGHTGRAY               ( 0xC0, 0xC0, 0xC0 );
    constexpr ::Color COL_LIGHTBLUE               ( 0x00, 0x00, 0xFF );
    constexpr ::Color COL_LIGHTGREEN              ( 0x00, 0xFF, 0x00 );
    constexpr ::Color COL_LIGHTCYAN               ( 0x00, 0xFF, 0xFF );
    constexpr ::Color COL_LIGHTRED                ( 0xFF, 0x00, 0x00 );
    constexpr ::Color COL_LIGHTMAGENTA            ( 0xFF, 0x00, 0xFF );
    constexpr ::Color COL_LIGHTGRAYBLUE           ( 0xE0, 0xE0, 0xFF );
    constexpr ::Color COL_YELLOW                  ( 0xFF, 0xFF, 0x00 );
    constexpr ::Color COL_YELLOW_HIGHLIGHT        ( 0xFF, 0xF2, 0x00 );
    constexpr ::Color COL_WHITE                   ( 0xFF, 0xFF, 0xFF );
    constexpr ::Color COL_TRANSPARENT             ( 0xFF, 0xFF, 0xFF, 0xFF );
    constexpr ::Color COL_AUTO                    ( 0xFF, 0xFF, 0xFF, 0xFF );
    constexpr ::Color COL_AUTHOR1_DARK            ( 198,  146,   0 );
    constexpr ::Color COL_AUTHOR1_NORMAL          ( 255,  255, 158 );
    constexpr ::Color COL_AUTHOR1_LIGHT           ( 255,  255, 195 );
    constexpr ::Color COL_AUTHOR2_DARK            (   6,   70, 162 );
    constexpr ::Color COL_AUTHOR2_NORMAL          ( 216,  232, 255 );
    constexpr ::Color COL_AUTHOR2_LIGHT           ( 233,  242, 255 );
    constexpr ::Color COL_AUTHOR3_DARK            (  87,  157,  28 );
    constexpr ::Color COL_AUTHOR3_NORMAL          ( 218,  248, 193 );
    constexpr ::Color COL_AUTHOR3_LIGHT           ( 226,  250, 207 );
    constexpr ::Color COL_AUTHOR4_DARK            ( 105,   43, 157 );
    constexpr ::Color COL_AUTHOR4_NORMAL          ( 228,  210, 245 );
    constexpr ::Color COL_AUTHOR4_LIGHT           ( 239,  228, 248 );
    constexpr ::Color COL_AUTHOR5_DARK            ( 197,    0,  11 );
    constexpr ::Color COL_AUTHOR5_NORMAL          ( 254,  205, 208 );
    constexpr ::Color COL_AUTHOR5_LIGHT           ( 255,  227, 229 );
    constexpr ::Color COL_AUTHOR6_DARK            (   0,  128, 128 );
    constexpr ::Color COL_AUTHOR6_NORMAL          ( 210,  246, 246 );
    constexpr ::Color COL_AUTHOR6_LIGHT           ( 230,  250, 250 );
    constexpr ::Color COL_AUTHOR7_DARK            ( 140,  132,   0 );
    constexpr ::Color COL_AUTHOR7_NORMAL          ( 237,  252, 163 );
    constexpr ::Color COL_AUTHOR7_LIGHT           ( 242,  254, 181 );
    constexpr ::Color COL_AUTHOR8_DARK            (  53,   85, 107 );
    constexpr ::Color COL_AUTHOR8_NORMAL          ( 211,  222, 232 );
    constexpr ::Color COL_AUTHOR8_LIGHT           ( 226,  234, 241 );
    constexpr ::Color COL_AUTHOR9_DARK            ( 209,  118,   0 );
    constexpr ::Color COL_AUTHOR9_NORMAL          ( 255,  226, 185 );
    constexpr ::Color COL_AUTHOR9_LIGHT           ( 255,  231, 199 );

    #endif

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

↑ V614 Uninitialized variable 'nTmp' used. Consider checking the first actual argument of the 'Color' function.