Move Color class to libscgui

src/Color.cpp

@@ -1,124 +0,0 @@
-#include "Color.hpp"
-#include <algorithm>
-#include <cmath>
-#include <stdexcept>
-#include <sstream>
-#include <iomanip>
-
-Color::Color(const RGB& rgb) : _rgb {rgb} {}
-
-Color::Color(const HSB& hsb) {
-    if (hsb.s <= 0) {
-        _rgb.r = _rgb.g = _rgb.b = hsb.b;
-    } else {
-        double hi = hsb.h / 60;
-        int i = static_cast<int>(hi);
-        double f = hi - i;
-        double p = hsb.b * (1.0 - hsb.s);
-        double q = hsb.b * (1.0 - (hsb.s * f));
-        double t = hsb.b * (1.0 - (hsb.s * (1.0 -f)));
-        switch (i) {
-            case 0:
-                _rgb.r = hsb.b;
-                _rgb.g = t;
-                _rgb.b = p;
-                break;
-            case 1:
-                _rgb.r = q;
-                _rgb.g = hsb.b;
-                _rgb.b = p;
-                break;
-            case 2:
-                _rgb.r = p;
-                _rgb.g = hsb.b;
-                _rgb.b = t;
-                break;
-            case 3:
-                _rgb.r = p;
-                _rgb.g = q;
-                _rgb.b = hsb.b;
-                break;
-            case 4:
-                _rgb.r = t;
-                _rgb.g = p;
-                _rgb.b = hsb.b;
-                break;
-            case 5:
-            default:
-                _rgb.r = hsb.b;
-                _rgb.g = p;
-                _rgb.b = q;
-                break;
-        }
-    }
-}
-
-Color::operator HSB() const {
-    HSB hsb;
-    double rgb_max = std::max<double>({_rgb.r, _rgb.g, _rgb.b});
-    double rgb_min = std::min<double>({_rgb.r, _rgb.g, _rgb.b});
-    double delta = rgb_max - rgb_min;
-    if (delta < 0.00001) {
-        hsb.h = 0;
-        hsb.s = 0;
-        hsb.b = rgb_max;
-        return hsb;
-    }
-    if (_rgb.r >= rgb_max) { // between yellow and magenta
-        hsb.h = (_rgb.g - _rgb.b) / delta;
-    } else if (_rgb.g >= rgb_max) { //  between cyan and yellow
-        hsb.h = 2.0 + (_rgb.b - _rgb.r) / delta;
-    } else { // between magenta and cyan
-        hsb.h = 4.0 + (_rgb.r - _rgb.g) / delta;
-    }
-    hsb.h *= 60;
-    hsb.s = rgb_max > 0.0 ? delta / rgb_max : 0;
-    hsb.b = rgb_max;
-    return hsb;
-}
-
-Color::Color(const std::string& hex) {
-    if (hex[0] != '#') throw std::runtime_error {"invalid hex color - must start with '#'"};
-    if (hex.size() != 7) throw std::runtime_error {"invalid hex color - must be 7 chars"};
-    unsigned int val;
-
-    std::istringstream iss {hex.substr(1, 2)};
-    iss >> std::hex >> val;
-    _rgb.r = val / 255.0;
-
-    iss.str(hex.substr(3, 2));
-    iss.seekg(0);
-    iss >> std::hex >> val;
-    _rgb.g = val / 255.0;
-
-    iss.str(hex.substr(5, 2));
-    iss.seekg(0);
-    iss >> std::hex >> val;
-    _rgb.b = val / 255.0;
-}
-
-Color& Color::operator=(const RGB& rgb) {
-    _rgb = rgb;
-    return *this;
-}
-
-Color& Color::operator=(const HSB& hsb) {
-    Color tmp {hsb};
-    _rgb = tmp._rgb;
-    return *this;
-}
-
-Color& Color::operator=(const std::string& hex) {
-    Color tmp {hex};
-    _rgb = tmp._rgb;
-    return *this;
-}
-
-std::string Color::hex() const {
-    std::ostringstream oss;
-    oss << '#' << std::hex <<
-        static_cast<unsigned int>(round(_rgb.r * 255)) <<
-        static_cast<unsigned int>(round(_rgb.g * 255)) <<
-        static_cast<unsigned int>(round(_rgb.b * 255));
-    return oss.str();
-}

src/Color.hpp

@@ -1,36 +0,0 @@
-#ifndef _Color_H_
-#define _Color_H_
-
-#include <string>
-
-struct RGB {
-    double r; // 0..1
-    double g; // 0..1
-    double b; // 0..1
-};
-
-struct HSB {
-    double h; // 0..360
-    double s; // 0..1
-    double b; // 0..1
-};
-
-class Color {
-    public:
-        Color(const RGB& rgb);
-        Color(const HSB& hsb);
-        Color(const std::string& hex);
-
-        operator RGB() const { return _rgb; }
-        operator HSB() const;
-        std::string hex() const;
-
-        Color& operator=(const RGB& rgb);
-        Color& operator=(const HSB& hsb);
-        Color& operator=(const std::string& hex);
-
-    private:
-        RGB _rgb;
-};
-
-#endif // _Color_H_