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+/*************************************************************************
+** Color.hpp **
+** **
+** This file is part of dvisvgm -- a fast DVI to SVG converter **
+** Copyright (C) 2005-2021 Martin Gieseking <martin.gieseking@uos.de> **
+** **
+** This program is free software; you can redistribute it and/or **
+** modify it under the terms of the GNU General Public License as **
+** published by the Free Software Foundation; either version 3 of **
+** the License, or (at your option) any later version. **
+** **
+** This program is distributed in the hope that it will be useful, but **
+** WITHOUT ANY WARRANTY; without even the implied warranty of **
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
+** GNU General Public License for more details. **
+** **
+** You should have received a copy of the GNU General Public License **
+** along with this program; if not, see <http://www.gnu.org/licenses/>. **
+*************************************************************************/
+
+#ifndef COLOR_HPP
+#define COLOR_HPP
+
+#include <string>
+#include <valarray>
+#include <vector>
+#include "VectorIterator.hpp"
+
+#ifdef TRANSPARENT
+#undef TRANSPARENT
+#endif
+
+class Color {
+ public:
+ static bool SUPPRESS_COLOR_NAMES;
+ static const Color BLACK;
+ static const Color WHITE;
+ static const Color TRANSPARENT;
+
+ enum class ColorSpace {GRAY, RGB, CMYK, LAB};
+
+ public:
+ Color () noexcept =default;
+ explicit Color (uint32_t rgb) noexcept : _rgb(rgb) {}
+ Color (uint8_t r, uint8_t g, uint8_t b) noexcept {setRGB(r,g,b);}
+ Color (double r, double g, double b) noexcept {setRGB(r,g,b);}
+ explicit Color (const std::valarray<double> &rgb) noexcept {setRGB(rgb);}
+ explicit Color (const std::string &name);
+ explicit operator uint32_t () const {return _rgb;}
+ bool operator == (const Color &c) const {return _rgb == c._rgb;}
+ bool operator != (const Color &c) const {return _rgb != c._rgb;}
+ bool operator < (const Color &c) const {return _rgb < c._rgb;}
+ Color operator *= (double c);
+ Color operator * (double c) const {return Color(*this) *= c;}
+ void setRGB (uint8_t r, uint8_t g, uint8_t b) {_rgb = (r << 16) | (g << 8) | b;}
+ void setRGB (double r, double g, double b);
+ void setRGB (const std::valarray<double> &rgb) {setRGB(rgb[0], rgb[1], rgb[2]);}
+ bool setPSName (std::string name, bool case_sensitive=true);
+ void setGray (uint8_t g) {setRGB(g,g,g);}
+ void setGray (double g) {setRGB(g,g,g);}
+ void setGray (const std::valarray<double> &gray) {setRGB(gray[0], gray[0], gray[0]);}
+ void setHSB (double h, double s, double b);
+ void setCMYK (double c, double m, double y, double k);
+ void setCMYK (const std::valarray<double> &cmyk);
+ void setXYZ (double x, double y, double z);
+ void setXYZ (const std::valarray<double> &xyz);
+ void setLab (double l, double a, double b);
+ void setLab (const std::valarray<double> &lab);
+ void set (ColorSpace colorSpace, VectorIterator<double> &it);
+ double getGray () const;
+ void getGray (std::valarray<double> &gray) const;
+ void getRGB (double &r, double &g, double &b) const;
+ void getRGB (std::valarray<double> &rgb) const;
+ void getCMYK (double &c, double &m, double &y, double &k) const;
+ void getCMYK (std::valarray<double> &cmyk) const;
+ void getXYZ (double &x, double &y, double &z) const;
+ void getLab (double &l, double &a, double &b) const;
+ void getLab (std::valarray<double> &lab) const;
+ double deltaE (const Color &c) const;
+ std::string rgbString () const;
+ std::string svgColorString (bool rgbonly) const;
+ std::string svgColorString () const {return svgColorString(SUPPRESS_COLOR_NAMES);}
+ static void CMYK2RGB (const std::valarray<double> &cmyk, std::valarray<double> &rgb);
+ static void RGB2CMYK (const std::valarray<double> &rgb, std::valarray<double> &cmyk);
+ static void HSB2RGB (const std::valarray<double> &hsb, std::valarray<double> &rgb);
+ static void RGB2XYZ (std::valarray<double> rgb, std::valarray<double> &xyz);
+ static void XYZ2RGB (const std::valarray<double> &xyz, std::valarray<double> &rgb);
+ static void RGB2Lab (const std::valarray<double> &rgb, std::valarray<double> &lab);
+ static void Lab2XYZ (const std::valarray<double> &lab, std::valarray<double> &xyz);
+ static int numComponents (ColorSpace colorSpace);
+
+ private:
+ uint32_t _rgb=0;
+};
+
+#endif