color.cpp

00001 /*      _______   __   __   __   ______   __   __   _______   __   __
00002  *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
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00007  * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
00008  *
00009  * Copyright (c) 2004, 2005, 2006 Olof Naessén and Per Larsson
00010  *
00011  *                                                         Js_./
00012  * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
00013  * Olof Naessén a.k.a jansem/yakslem                _asww7!uY`>  )\a//
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00056 
00057 /*
00058  * For comments regarding functions please see the header file.
00059  */
00060 
00061 #include "guichan/color.hpp"
00062 
00063 namespace gcn
00064 {
00065     Color::Color()
00066     {
00067         r = 0;
00068         g = 0;
00069         b = 0;
00070         a = 255;
00071     }
00072 
00073     Color::Color(int color)
00074     {
00075         a = 255;
00076         r = (color >> 16) & 0xFF;
00077         g = (color >> 8) & 0xFF;
00078         b = color & 0xFF;
00079     }
00080 
00081     Color::Color(int r, int g, int b, int a)
00082     {
00083         this->r = r;
00084         this->g = g;
00085         this->b = b;
00086         this->a = a;
00087     }
00088 
00089     Color Color::operator+(const Color& color) const
00090     {
00091         Color result;
00092         result.r = r + color.r;
00093         result.g = g + color.g;
00094         result.b = b + color.b;
00095         result.a = 255;
00096 
00097         result.r = (result.r>255?255:(result.r<0?0:result.r));
00098         result.g = (result.g>255?255:(result.g<0?0:result.g));
00099         result.b = (result.b>255?255:(result.b<0?0:result.b));
00100 
00101         return result;
00102     }
00103 
00104     Color Color::operator-(const Color& color) const
00105     {
00106         Color result;
00107         result.r = r - color.r;
00108         result.g = g - color.g;
00109         result.b = b - color.b;
00110         result.a = 255;
00111 
00112         result.r = (result.r>255?255:(result.r<0?0:result.r));
00113         result.g = (result.g>255?255:(result.g<0?0:result.g));
00114         result.b = (result.b>255?255:(result.b<0?0:result.b));
00115 
00116         return result;
00117     }
00118 
00119     Color Color::operator*(float value) const
00120     {
00121         Color result;
00122         result.r = (int)(r * value);
00123         result.g = (int)(g * value);
00124         result.b = (int)(b * value);
00125         result.a = a;
00126 
00127         result.r = (result.r>255?255:(result.r<0?0:result.r));
00128         result.g = (result.g>255?255:(result.g<0?0:result.g));
00129         result.b = (result.b>255?255:(result.b<0?0:result.b));
00130 
00131         return result;
00132     }
00133 
00134     bool Color::operator==(const Color& color) const
00135     {
00136         return r == color.r && g == color.g && b == color.b && a == color.a;
00137     }
00138 
00139     bool Color::operator!=(const Color& color) const
00140     {
00141         return !(r == color.r && g == color.g && b == color.b && a == color.a);
00142     }
00143 }

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