Represents a 32-bit INTERNAL pixel with premultiplied alpha, and can perform compositing operations with it. More...

Public Types
enum	{ indexA = 3, indexR = 0, indexG = 1, indexB = 2 }
	The indexes of the different components in the byte layout of this type of colour. More...

Public Member Functions
	PixelARGB () noexcept=default
	Creates a pixel without defining its colour. More...

	PixelARGB (uint8 a, uint8 r, uint8 g, uint8 b) noexcept

forcedinline uint32	getNativeARGB () const noexcept
	Returns a uint32 which represents the pixel in a platform dependent format. More...

forcedinline uint32	getInARGBMaskOrder () const noexcept
	Returns a uint32 which will be in argb order as if constructed with the following mask operation ((alpha << 24) \| (red << 16) \| (green << 8) \| blue). More...

uint32	getInARGBMemoryOrder () const noexcept
	Returns a uint32 which when written to memory, will be in the order a, r, g, b. More...

forcedinline uint32	getEvenBytes () const noexcept
	Return channels with an even index and insert zero bytes between them. More...

forcedinline uint32	getOddBytes () const noexcept
	Return channels with an odd index and insert zero bytes between them. More...

forcedinline uint8	getAlpha () const noexcept

forcedinline uint8	getRed () const noexcept

forcedinline uint8	getGreen () const noexcept

forcedinline uint8	getBlue () const noexcept

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

void	setARGB (uint8 a, uint8 r, uint8 g, uint8 b) noexcept
	Sets the pixel's colour from individual components. More...

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

forcedinline void	blend (PixelRGB src) noexcept
	Blends another pixel onto this one. More...

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. More...

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

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

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

forcedinline void	multiplyAlpha (float multiplier) noexcept

PixelARGB	getUnpremultiplied () const noexcept

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

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

forcedinline void	desaturate () noexcept

Detailed Description

Represents a 32-bit INTERNAL pixel with premultiplied alpha, and can perform compositing operations with it.

This is used internally by the imaging classes.

See also: PixelRGB

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

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

Enumerator
indexA
indexR
indexG
indexB

Constructor & Destructor Documentation

◆ PixelARGB() [1/2]

PixelARGB::PixelARGB ( )

defaultnoexcept

Creates a pixel without defining its colour.

◆ PixelARGB() [2/2]

PixelARGB::PixelARGB	(	uint8	a,
		uint8	r,
		uint8	g,
		uint8	b
	)

noexcept

References gl::a, gl::b, gl::components, gl::g, and gl::r.

Member Function Documentation

◆ getNativeARGB()

forcedinline uint32 PixelARGB::getNativeARGB ( ) const

noexcept

Returns a uint32 which represents the pixel in a platform dependent format.

◆ getInARGBMaskOrder()

forcedinline uint32 PixelARGB::getInARGBMaskOrder ( ) const

noexcept

Returns a uint32 which will be in argb order as if constructed with the following mask operation ((alpha << 24) | (red << 16) | (green << 8) | blue).

References gl::components.

◆ getInARGBMemoryOrder()

uint32 PixelARGB::getInARGBMemoryOrder ( ) const

noexcept

Returns a uint32 which when written to memory, will be in the order a, r, g, b.

In other words, if the return-value is read as a uint8 array then the elements will be in the order of a, r, g, b

References gl::components.

◆ getEvenBytes()

forcedinline uint32 PixelARGB::getEvenBytes ( ) const

noexcept

Return channels with an even index and insert zero bytes between them.

This is useful for blending operations. The exact channels which are returned is platform dependent.

◆ getOddBytes()

forcedinline uint32 PixelARGB::getOddBytes ( ) const

noexcept

Return channels with an odd index and insert zero bytes between them.

This is useful for blending operations. The exact channels which are returned is platform dependent.

◆ getAlpha()

forcedinline uint8 PixelARGB::getAlpha ( ) const

noexcept

References gl::components.

Referenced by Colour::getAlpha().

◆ getRed()

forcedinline uint8 PixelARGB::getRed ( ) const

noexcept

References gl::components.

Referenced by Colour::getRed().

◆ getGreen()

forcedinline uint8 PixelARGB::getGreen ( ) const

noexcept

References gl::components.

Referenced by Colour::getGreen().

◆ getBlue()

forcedinline uint8 PixelARGB::getBlue ( ) const

noexcept

References gl::components.

Referenced by Colour::getBlue().

◆ set()

template<class Pixel >

forcedinline void PixelARGB::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.

References gl::src.

◆ setARGB()

void PixelARGB::setARGB	(	uint8	a,
		uint8	r,
		uint8	g,
		uint8	b
	)

noexcept

Sets the pixel's colour from individual components.

References gl::a, gl::b, gl::components, gl::g, and gl::r.

◆ blend() [1/2]

template<class Pixel >

forcedinline void PixelARGB::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.

References gl::alpha, clampPixelComponents(), maskPixelComponents(), and gl::src.

◆ blend() [2/2]

template<class Pixel >

forcedinline void PixelARGB::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.

References gl::alpha, clampPixelComponents(), maskPixelComponents(), and gl::src.

◆ tween()

template<class Pixel >

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

noexcept

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

References gl::src.

◆ setAlpha()

forcedinline void PixelARGB::setAlpha ( uint8 newAlpha )

noexcept

Replaces the colour's alpha value with another one.

References gl::components.

◆ multiplyAlpha() [1/2]

forcedinline void PixelARGB::multiplyAlpha ( int multiplier )

noexcept

Multiplies the colour's alpha value with another one.

◆ multiplyAlpha() [2/2]

forcedinline void PixelARGB::multiplyAlpha ( float multiplier )

noexcept

References gl::f.

◆ getUnpremultiplied()

PixelARGB PixelARGB::getUnpremultiplied ( ) const

noexcept

References gl::p.

◆ premultiply()

forcedinline void PixelARGB::premultiply ( )

noexcept

Premultiplies the pixel's RGB values by its alpha.

References gl::alpha, and gl::components.

◆ unpremultiply()

forcedinline void PixelARGB::unpremultiply ( )

noexcept

Unpremultiplies the pixel's RGB values.

References gl::alpha, gl::components, and jmin().

◆ desaturate()

forcedinline void PixelARGB::desaturate ( )

noexcept

References gl::components, and int().

Member Data Documentation

◆ internal

uint32 PixelARGB::internal

◆ components

Components PixelARGB::components

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

juce_PixelFormats.h

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ anonymous enum

Constructor & Destructor Documentation

◆ PixelARGB() [1/2]

◆ PixelARGB() [2/2]

Member Function Documentation

◆ getNativeARGB()

◆ getInARGBMaskOrder()

◆ getInARGBMemoryOrder()

◆ getEvenBytes()

◆ getOddBytes()

◆ getAlpha()

◆ getRed()

◆ getGreen()

◆ getBlue()

◆ set()

◆ setARGB()

◆ blend() [1/2]

◆ blend() [2/2]

◆ tween()

◆ setAlpha()

◆ multiplyAlpha() [1/2]

◆ multiplyAlpha() [2/2]

◆ getUnpremultiplied()

◆ premultiply()

◆ unpremultiply()

◆ desaturate()

Member Data Documentation

◆ internal

◆ components