HGL::ImageOutput::ICanvas::RGBA Struct Reference
[Image output plugins]

Structure representing a color. More...

#include <icanvas.h>

List of all members.

Public Member Functions
	RGBA (uint32_t index) throw ()
	Constructor.
	RGBA (uint8_t r, uint8_t g, uint8_t b, uint8_t a) throw ()
	Constructor.
	RGBA (const std::string &hexStr) throw ()
	Constructor.
	RGBA () throw ()
	Constructor.
virtual	~RGBA () throw ()
	Destructor.
uint32_t	getColorIndex () const throw ()
	Gets the color index.
Public Attributes
uint8_t	alpha
	the alpha value between 0 and 255
uint8_t	blue
	the blue value between 0 and 255
uint8_t	green
	the green value between 0 and 255
uint8_t	red
	the red value between 0 and 255

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Detailed Description

Structure representing a color.

Includes the alpha channel

Author:

Heiko Schäfer <heiko@hgl.rangun.de>

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Constructor & Destructor Documentation

HGL::ImageOutput::ICanvas::RGBA::RGBA

(

)

throw ()

Constructor.

Initial is color white with no opacity (rsep. full transparent)

HGL::ImageOutput::ICanvas::RGBA::RGBA

(

const std::string &

hexStr

)

throw () [explicit]

Constructor.

Parameters:

hexStr

a string in the form rrggbbaa

HGL::ImageOutput::ICanvas::RGBA::RGBA	(	uint8_t	r,
		uint8_t	g,
		uint8_t	b,
		uint8_t	a
	)			throw ()

Constructor.

Parameters:

	r	the red value between 0 and 255
	g	the green value between 0 and 255
	b	the blue value between 0 and 255
	a	the alpha value between 0 and 255

HGL::ImageOutput::ICanvas::RGBA::RGBA

(

uint32_t

index

)

throw ()

Constructor.

Constructs an RGBA instance from a 32 bit integer.

The integer should have a hex form like 0xrrggbbaa.

See also:

RGBA(const std::string &hexStr)

Parameters:

index

the color index

Since:

0.4.49

virtual HGL::ImageOutput::ICanvas::RGBA::~RGBA

(

)

throw () [virtual]

Destructor.

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Member Function Documentation

uint32_t HGL::ImageOutput::ICanvas::RGBA::getColorIndex

(

)

const throw ()

Gets the color index.

Returns:

the color index

Since:

0.4.49

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Member Data Documentation

uint8_t HGL::ImageOutput::ICanvas::RGBA::alpha

the alpha value between 0 and 255

uint8_t HGL::ImageOutput::ICanvas::RGBA::blue

the blue value between 0 and 255

uint8_t HGL::ImageOutput::ICanvas::RGBA::green

the green value between 0 and 255

uint8_t HGL::ImageOutput::ICanvas::RGBA::red

the red value between 0 and 255