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color.cpp

00001 /*      _______   __   __   __   ______   __   __   _______   __   __                 
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00007  * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/                      
00008  *
00009  * Copyright (c) 2004, 2005 darkbits                        Js_./
00010  * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
00011  * Olof Naessén a.k.a jansem/yakslem                _asww7!uY`>  )\a//
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00054 
00055 /*
00056  * For comments regarding functions please see the header file. 
00057  */
00058 
00059 #include "guichan/color.hpp"
00060 
00061 namespace gcn
00062 {
00063     Color::Color()
00064     {
00065         r = 0;
00066         g = 0;
00067         b = 0;
00068         a = 255;
00069     }
00070 
00071     Color::Color(int color)
00072     {
00073         a = 255;
00074         r = (color >> 16) & 0xFF;
00075         g = (color >> 8) & 0xFF;
00076         b = color & 0xFF;    
00077     }
00078     
00079     Color::Color(int r, int g, int b, int a)
00080     {
00081         this->r = r;
00082         this->g = g;
00083         this->b = b;
00084         this->a = a;
00085     }
00086 
00087     Color Color::operator+(const Color& color) const
00088     {
00089         Color result;
00090         result.r = r + color.r;
00091         result.g = g + color.g;
00092         result.b = b + color.b;
00093         result.a = 255;
00094 
00095         result.r = (result.r>255?255:(result.r<0?0:result.r));
00096         result.g = (result.g>255?255:(result.g<0?0:result.g));
00097         result.b = (result.b>255?255:(result.b<0?0:result.b));
00098 
00099         return result;
00100     }
00101   
00102     Color Color::operator-(const Color& color) const
00103     {
00104         Color result;
00105         result.r = r - color.r;
00106         result.g = g - color.g;
00107         result.b = b - color.b;
00108         result.a = 255;
00109 
00110         result.r = (result.r>255?255:(result.r<0?0:result.r));
00111         result.g = (result.g>255?255:(result.g<0?0:result.g));
00112         result.b = (result.b>255?255:(result.b<0?0:result.b));
00113 
00114         return result;
00115     }
00116 
00117     Color Color::operator*(float value) const
00118     {
00119         Color result;
00120         result.r = (int)(r * value);
00121         result.g = (int)(g * value);
00122         result.b = (int)(b * value);
00123         result.a = a;
00124 
00125         result.r = (result.r>255?255:(result.r<0?0:result.r));
00126         result.g = (result.g>255?255:(result.g<0?0:result.g));
00127         result.b = (result.b>255?255:(result.b<0?0:result.b));
00128 
00129         return result;    
00130     }
00131 
00132     bool Color::operator==(const Color& color) const
00133     {
00134         return r == color.r && g == color.g && b == color.b && a == color.a;
00135     }
00136 
00137     bool Color::operator!=(const Color& color) const
00138     {
00139         return !(r == color.r && g == color.g && b == color.b && a == color.a);
00140     }
00141 }

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