Represents an 8-bit single-channel pixel, and can perform compositing operations on it. More...

Public Types
enum	{ indexA = 0 }
	The indexes of the different components in the byte layout of this type of colour. More...

Public Member Functions
	PixelAlpha () noexcept
	Creates a pixel without defining its colour.

	~PixelAlpha () noexcept

	PixelAlpha (const uint32 argb) noexcept
	Creates a pixel from a 32-bit argb value.

forcedinline uint32	getARGB () const noexcept

forcedinline uint32	getUnpremultipliedARGB () const noexcept

forcedinline uint32	getRB () const noexcept

forcedinline uint32	getAG () const noexcept

forcedinline uint8	getAlpha () const noexcept

forcedinline uint8 &	getAlpha () noexcept

forcedinline uint8	getRed () const noexcept

forcedinline uint8	getGreen () const noexcept

forcedinline uint8	getBlue () const noexcept

template<class Pixel >
forcedinline void	blend (const Pixel &src) noexcept
	Blends another pixel onto this one.

template<class Pixel >
forcedinline void	blend (const Pixel &src, uint32 extraAlpha) noexcept
	Blends another pixel onto this one, applying an extra multiplier to its opacity.

template<class Pixel >
forcedinline void	tween (const Pixel &src, const uint32 amount) noexcept
	Blends another pixel with this one, creating a colour that is somewhere between the two, as specified by the amount.

template<class Pixel >
forcedinline void	set (const Pixel &src) noexcept
	Copies another pixel colour over this one.

forcedinline void	setAlpha (const uint8 newAlpha) noexcept
	Replaces the colour's alpha value with another one.

forcedinline void	multiplyAlpha (int multiplier) noexcept
	Multiplies the colour's alpha value with another one.

forcedinline void	multiplyAlpha (const float multiplier) noexcept

forcedinline void	setARGB (const uint8 a_, const uint8, const uint8, const uint8) noexcept
	Sets the pixel's colour from individual components.

forcedinline void	premultiply () noexcept
	Premultiplies the pixel's RGB values by its alpha.

forcedinline void	unpremultiply () noexcept
	Unpremultiplies the pixel's RGB values.

forcedinline void	desaturate () noexcept

Detailed Description

Represents an 8-bit single-channel pixel, and can perform compositing operations on it.

This is used internally by the imaging classes.

See Also: PixelARGB, PixelRGB

Member Enumeration Documentation

anonymous enum

The indexes of the different components in the byte layout of this type of colour.

Enumerator:

indexA

Constructor & Destructor Documentation

PixelAlpha::PixelAlpha ( )

noexcept

Creates a pixel without defining its colour.

PixelAlpha::~PixelAlpha ( )

noexcept

PixelAlpha::PixelAlpha ( const uint32 argb )

noexcept

Creates a pixel from a 32-bit argb value.

(The argb format is that used by PixelARGB)

Member Function Documentation

forcedinline uint32 PixelAlpha::getARGB ( ) const

noexcept

forcedinline uint32 PixelAlpha::getUnpremultipliedARGB ( ) const

noexcept

forcedinline uint32 PixelAlpha::getRB ( ) const

noexcept

forcedinline uint32 PixelAlpha::getAG ( ) const

noexcept

forcedinline uint8 PixelAlpha::getAlpha ( ) const

noexcept

forcedinline uint8& PixelAlpha::getAlpha ( )

noexcept

forcedinline uint8 PixelAlpha::getRed ( ) const

noexcept

forcedinline uint8 PixelAlpha::getGreen ( ) const

noexcept

forcedinline uint8 PixelAlpha::getBlue ( ) const

noexcept

template<class Pixel >

forcedinline void PixelAlpha::blend ( const Pixel & src )

noexcept

Blends another pixel onto this one.

This takes into account the opacity of the pixel being overlaid, and blends it accordingly.

template<class Pixel >

forcedinline void PixelAlpha::blend	(	const Pixel &	src,
		uint32	extraAlpha
	)

noexcept

Blends another pixel onto this one, applying an extra multiplier to its opacity.

The opacity of the pixel being overlaid is scaled by the extraAlpha factor before being used, so this can blend semi-transparently from a PixelRGB argument.

template<class Pixel >

forcedinline void PixelAlpha::tween	(	const Pixel &	src,
		const uint32	amount
	)

noexcept

Blends another pixel with this one, creating a colour that is somewhere between the two, as specified by the amount.

template<class Pixel >

forcedinline void PixelAlpha::set ( const Pixel & src )

noexcept

Copies another pixel colour over this one.

This doesn't blend it - this colour is simply replaced by the other one.

forcedinline void PixelAlpha::setAlpha ( const uint8 newAlpha )

noexcept

Replaces the colour's alpha value with another one.

forcedinline void PixelAlpha::multiplyAlpha ( int multiplier )

noexcept

Multiplies the colour's alpha value with another one.

forcedinline void PixelAlpha::multiplyAlpha ( const float multiplier )

noexcept

forcedinline void PixelAlpha::setARGB	(	const uint8	a_,
		const uint8	,
		const uint8	,
		const uint8
	)

noexcept

Sets the pixel's colour from individual components.

forcedinline void PixelAlpha::premultiply ( )

noexcept

Premultiplies the pixel's RGB values by its alpha.

forcedinline void PixelAlpha::unpremultiply ( )

noexcept

Unpremultiplies the pixel's RGB values.

forcedinline void PixelAlpha::desaturate ( )

noexcept

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

juce_PixelFormats.h

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation