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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_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>
#include <osl/endian.h>
namespace color
{
constexpr sal_uInt32 extractRGB(sal_uInt32 nColorNumber)
{
return nColorNumber & 0x00FFFFFF;
}
}
// Color
class SAL_WARN_UNUSED TOOLS_DLLPUBLIC Color
{
// data intentionally public; read the commit log!
public:
union
{
sal_uInt32 mValue;
struct
{
#ifdef OSL_BIGENDIAN
sal_uInt8 A;
sal_uInt8 R;
sal_uInt8 G;
sal_uInt8 B;
#else
sal_uInt8 B;
sal_uInt8 G;
sal_uInt8 R;
sal_uInt8 A;
#endif
};
};
public:
constexpr Color()
: mValue(0) // black
{}
constexpr Color(sal_uInt32 nColor)
: mValue(nColor)
{}
constexpr Color(sal_uInt8 nTransparency, sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue)
: mValue(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(std::lround(rBColor.getRed() * 255.0)),
sal_uInt8(std::lround(rBColor.getGreen() * 255.0)),
sal_uInt8(std::lround(rBColor.getBlue() * 255.0)))
{}
/** Primarily used when passing Color objects to UNO API */
constexpr explicit operator sal_uInt32() const
{
return mValue;
}
constexpr explicit operator sal_Int32() const
{
return sal_Int32(mValue);
}
bool operator<(const Color& aCompareColor) const
{
return mValue < aCompareColor.mValue;
}
void SetRed(sal_uInt8 nRed);
sal_uInt8 GetRed() const
{
return R;
}
void SetGreen(sal_uInt8 nGreen);
sal_uInt8 GetGreen() const
{
return G;
}
void SetBlue(sal_uInt8 nBlue);
sal_uInt8 GetBlue() const
{
return B;
}
void SetTransparency(sal_uInt8 nTransparency);
sal_uInt8 GetTransparency() const
{
return A;
}
Color GetRGBColor() const
{
return color::extractRGB(mValue);
}
sal_uInt16 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 mValue == rColor.mValue;
}
bool operator!=(const Color& rColor) const
{
return !(Color::operator==(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 )
{
R = nRed;
}
inline void Color::SetGreen( sal_uInt8 nGreen )
{
G = nGreen;
}
inline void Color::SetBlue( sal_uInt8 nBlue )
{
B = nBlue;
}
inline void Color::SetTransparency( sal_uInt8 nTransparency )
{
A = nTransparency;
}
inline bool Color::IsRGBEqual( const Color& rColor ) const
{
return color::extractRGB(mValue) == color::extractRGB(rColor.mValue);
}
inline sal_uInt8 Color::GetLuminance() const
{
return sal_uInt8((B * 29UL + G * 151UL + R * 76UL) >> 8);
}
constexpr sal_uInt8 ColorChannelMerge(sal_uInt8 nDst, sal_uInt8 nSrc, sal_uInt8 nSrcTrans)
{
return sal_uInt8(((sal_Int32(nDst) - nSrc) * nSrcTrans + ((nSrc << 8) | nDst)) >> 8);
}
inline void Color::Invert()
{
R = ~R;
G = ~G;
B = ~B;
}
inline sal_uInt16 Color::GetColorError( const Color& rColor ) const
{
return static_cast<sal_uInt16>(
abs(static_cast<int>(GetBlue()) - rColor.GetBlue()) +
abs(static_cast<int>(GetGreen()) - rColor.GetGreen()) +
abs(static_cast<int>(GetRed()) - rColor.GetRed()));
}
inline void Color::Merge( const Color& rMergeColor, sal_uInt8 cTransparency )
{
R = ColorChannelMerge(R, rMergeColor.R, cTransparency);
G = ColorChannelMerge(G, rMergeColor.G, cTransparency);
B = ColorChannelMerge(B, rMergeColor.B, 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 = {}; // spurious -Werror=maybe-uninitialized
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::sun::star::uno {
template<>
inline Any makeAny( Color const & value )
{
return Any(sal_Int32(value));
}
}
// Test compile time conversion of Color to sal_uInt32
static_assert (sal_uInt32(Color(0x00, 0x12, 0x34, 0x56)) == 0x00123456);
static_assert (sal_uInt32(Color(0x12, 0x34, 0x56)) == 0x00123456);
// 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_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_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 );
template<typename charT, typename traits>
inline std::basic_ostream<charT, traits>& operator <<(std::basic_ostream<charT, traits>& rStream, const Color& rColor)
{
std::ios_base::fmtflags nOrigFlags = rStream.flags();
rStream << "c[" << std::hex << std::setfill ('0')
<< std::setw(2) << static_cast<int>(rColor.GetRed())
<< std::setw(2) << static_cast<int>(rColor.GetGreen())
<< std::setw(2) << static_cast<int>(rColor.GetBlue())
<< std::setw(2) << static_cast<int>(rColor.GetTransparency()) << "]";
rStream.setf(nOrigFlags);
return rStream;
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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