Elemental::color Struct Reference

#include <value.hh>

List of all members.

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Detailed Description

A color description.

Its components are suitable as parameters to Gdk::Color::set_rgb_p().

Public Member Functions
	color (double red=0.0, double green=0.0, double blue=0.0) throw ()
	Constructs a new color with red, green, and blue percentages.
	color (unsigned int red, unsigned int green, unsigned int blue) throw ()
	Constructs a new color with red, green, and blue levels.
double	get_luminance () const throw ()
	Returns the luminous intensity of the color.
color	get_compliment () const throw ()
	Returns a grayscale color complimentary in luminance to this color.
color	composite (const color &other, double alpha) const throw ()
	Returns a composite of this color and another.
std::string	get_hex_spec () const throw ()
	Returns a hexadecimal specification of the color ("#rrggbb" format).
Public Attributes
double	red
	The red component of the color in the RGB space.
double	green
	The green component of the color in the RGB space.
double	blue
	The blue component of the color in the RGB space.

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Constructor & Destructor Documentation

Elemental::color::color	(	unsigned int	red,
		unsigned int	green,
		unsigned int	blue
	)			throw ()

Constructs a new color with red, green, and blue levels.

Each component ranges from 0 (0.0) to 65535 (1.0).

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Member Function Documentation

color Elemental::color::composite	(	const color &	other,
		double	alpha
	)			const throw ()

Returns a composite of this color and another.

Parameters:

	other	A color with which this color will be composited.
	alpha	The level of the other color in the composite, between 0.0 and 1.0.

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The documentation for this struct was generated from the following file:

• libelemental/value.hh