Color.h

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================//

#ifndef COLOR_H
#define COLOR_H

#ifdef _WIN32
#pragma once
#endif

//-----------------------------------------------------------------------------
// Purpose: Basic handler for an rgb set of colors
//			This class is fully inline
//-----------------------------------------------------------------------------
class Color
{
public:
    // constructors
    Color()
    {
        *((int *)this) = 0;
    }
    Color(int _r,int _g,int _b)
    {
        SetColor(_r, _g, _b, 0);
    }
    Color(int _r,int _g,int _b,int _a)
    {
        SetColor(_r, _g, _b, _a);
    }
    
    // set the color
    // r - red component (0-255)
    // g - green component (0-255)
    // b - blue component (0-255)
    // a - alpha component, controls transparency (0 - transparent, 255 - opaque);
    void SetColor(int _r, int _g, int _b, int _a = 0)
    {
        _color[0] = (unsigned char)_r;
        _color[1] = (unsigned char)_g;
        _color[2] = (unsigned char)_b;
        _color[3] = (unsigned char)_a;
    }
    
    void GetColor(int &_r, int &_g, int &_b, int &_a) const
    {
        _r = _color[0];
        _g = _color[1];
        _b = _color[2];
        _a = _color[3];
    }
    
    void SetRawColor( int color32 )
    {
        *((int *)this) = color32;
    }
    
    int GetRawColor() const
    {
        return *((int *)this);
    }
    
    inline int r()    { return _color[0]; }
    inline int g()    { return _color[1]; }
    inline int b() 	{ return _color[2]; }
    inline int a()   { return _color[3]; }
    
    unsigned char &operator[](int index)
    {
        return _color[index];
    }
    
    const unsigned char &operator[](int index) const
    {
        return _color[index];
    }
    
    bool operator == (const Color &rhs) const
    {
        return ( *((int *)this) == *((int *)&rhs) );
    }
    
    bool operator != (const Color &rhs) const
    {
        return !(operator==(rhs));
    }
    
    Color &operator=( const Color &rhs )
    {
        SetRawColor( rhs.GetRawColor() );
        return *this;
    }
    
    static Color White() {
        return Color(255, 255, 255, 255);
    }
    
    static Color Red() {
        return Color(255, 0, 0, 255);
    }
    
    static Color Green() {
        return Color(0, 255, 0, 255);
    }
    
    static Color Blue() {
        return Color(0, 0, 255, 255);
    }
    
    static Color Orange() {
        return Color(255, 155, 0, 255);
    }
    
    static Color Yellow() {
        return Color(255, 255, 0, 255);
    }
    
    static Color Black() {
        return Color(0, 0, 0, 255);
    }
    
private:
    unsigned char _color[4];
};


#endif // COLOR_H