source-engine/public/Color.h

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

#ifndef COLOR_H
#define COLOR_H

#ifdef _WIN32
#pragma once
#endif

#include "tier1/strtools.h"

//-----------------------------------------------------------------------------
// Purpose: Basic handler for an rgb set of colors
//			This class is fully inline
//-----------------------------------------------------------------------------
class Color
{
public:
	// constructors
	Color()
	{
		Q_memset( _color, 0, sizeof _color );
	}
	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 )
	{
		Q_memcpy( _color, &color32, sizeof _color );
	}

	int GetRawColor() const
	{
		int color;
		Q_memcpy( &color, _color, sizeof _color );
		return color;
	}

	inline int r() const	{ return _color[0]; }
	inline int g() const	{ return _color[1]; }
	inline int b() const	{ return _color[2]; }
	inline int a() const	{ 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)
	{
		return Q_memcmp( this, &rhs, sizeof(Color) ) == 0;
	}

	bool operator != (const Color &rhs)
	{
		return !(operator==(rhs));
	}

	Color &operator=( const Color &rhs )
	{
		SetRawColor( rhs.GetRawColor() );
		return *this;
	}

private:
	unsigned char _color[4];
};


#endif // COLOR_H