SkColorInfo Struct Reference

Describes pixel and encoding. More...

#include <SkImageInfo.h>

Public Member Functions
	SkColorInfo ()
	Creates an SkColorInfo with kUnknown_SkColorType, kUnknown_SkAlphaType, and no SkColorSpace. More...
	~SkColorInfo ()
	SkColorInfo (SkColorType ct, SkAlphaType at, sk_sp< SkColorSpace > cs)
	Creates SkColorInfo from SkColorType ct, SkAlphaType at, and optionally SkColorSpace cs. More...
	SkColorInfo (const SkColorInfo &)
	SkColorInfo (SkColorInfo &&)
SkColorInfo &	operator= (const SkColorInfo &)
SkColorInfo &	operator= (SkColorInfo &&)
SkColorSpace *	colorSpace () const
sk_sp< SkColorSpace >	refColorSpace () const
SkColorType	colorType () const
SkAlphaType	alphaType () const
bool	isOpaque () const
bool	gammaCloseToSRGB () const
bool	operator== (const SkColorInfo &other) const
	Does other represent the same color type, alpha type, and color space? More...
bool	operator!= (const SkColorInfo &other) const
	Does other represent a different color type, alpha type, or color space? More...
SkColorInfo	makeAlphaType (SkAlphaType newAlphaType) const
	Creates SkColorInfo with same SkColorType, SkColorSpace, with SkAlphaType set to newAlphaType. More...
SkColorInfo	makeColorType (SkColorType newColorType) const
	Creates new SkColorInfo with same SkAlphaType, SkColorSpace, with SkColorType set to newColorType. More...
SkColorInfo	makeColorSpace (sk_sp< SkColorSpace > cs) const
	Creates SkColorInfo with same SkAlphaType, SkColorType, with SkColorSpace set to cs. More...
int	bytesPerPixel () const
	Returns number of bytes per pixel required by SkColorType. More...
int	shiftPerPixel () const
	Returns bit shift converting row bytes to row pixels. More...

Detailed Description

Describes pixel and encoding.

SkImageInfo can be created from SkColorInfo by providing dimensions.

It encodes how pixel bits describe alpha, transparency; color components red, blue, and green; and SkColorSpace, the range and linearity of colors.

Constructor & Destructor Documentation

SkColorInfo() [1/4]

SkColorInfo::SkColorInfo

(

)

Creates an SkColorInfo with kUnknown_SkColorType, kUnknown_SkAlphaType, and no SkColorSpace.

Returns

empty SkImageInfo

~SkColorInfo()

SkColorInfo::~SkColorInfo

(

)

SkColorInfo() [2/4]

SkColorInfo::SkColorInfo	(	SkColorType	ct,
		SkAlphaType	at,
		sk_sp< SkColorSpace >	cs
	)

Creates SkColorInfo from SkColorType ct, SkAlphaType at, and optionally SkColorSpace cs.

If SkColorSpace cs is nullptr and SkColorInfo is part of drawing source: SkColorSpace defaults to sRGB, mapping into SkSurface SkColorSpace.

Parameters are not validated to see if their values are legal, or that the combination is supported.

Returns

created SkColorInfo

SkColorInfo() [3/4]

SkColorInfo::SkColorInfo

(

const SkColorInfo &

)

SkColorInfo() [4/4]

SkColorInfo::SkColorInfo

(

SkColorInfo &&

)

Member Function Documentation

alphaType()

SkAlphaType SkColorInfo::alphaType ( ) const

inline

bytesPerPixel()

int SkColorInfo::bytesPerPixel

(

)

const

Returns number of bytes per pixel required by SkColorType.

Returns zero if colorType() is kUnknown_SkColorType.

Returns

bytes in pixel

example: https://fiddle.skia.org/c/@ImageInfo_bytesPerPixel

colorSpace()

SkColorSpace* SkColorInfo::colorSpace

(

)

const

colorType()

SkColorType SkColorInfo::colorType ( ) const

inline

gammaCloseToSRGB()

bool SkColorInfo::gammaCloseToSRGB

(

)

const

isOpaque()

bool SkColorInfo::isOpaque ( ) const

inline

makeAlphaType()

SkColorInfo SkColorInfo::makeAlphaType

(

SkAlphaType

newAlphaType

)

const

Creates SkColorInfo with same SkColorType, SkColorSpace, with SkAlphaType set to newAlphaType.

Created SkColorInfo contains newAlphaType even if it is incompatible with SkColorType, in which case SkAlphaType in SkColorInfo is ignored.

makeColorSpace()

SkColorInfo SkColorInfo::makeColorSpace

(

sk_sp< SkColorSpace >

cs

)

const

Creates SkColorInfo with same SkAlphaType, SkColorType, with SkColorSpace set to cs.

cs may be nullptr.

makeColorType()

SkColorInfo SkColorInfo::makeColorType

(

SkColorType

newColorType

)

const

Creates new SkColorInfo with same SkAlphaType, SkColorSpace, with SkColorType set to newColorType.

operator!=()

bool SkColorInfo::operator!=

(

const SkColorInfo &

other

)

const

Does other represent a different color type, alpha type, or color space?

operator=() [1/2]

SkColorInfo& SkColorInfo::operator=

(

const SkColorInfo &

)

operator=() [2/2]

SkColorInfo& SkColorInfo::operator=

(

SkColorInfo &&

)

operator==()

bool SkColorInfo::operator==

(

const SkColorInfo &

other

)

const

Does other represent the same color type, alpha type, and color space?

refColorSpace()

sk_sp<SkColorSpace> SkColorInfo::refColorSpace

(

)

const

shiftPerPixel()

int SkColorInfo::shiftPerPixel

(

)

const

Returns bit shift converting row bytes to row pixels.

Returns zero for kUnknown_SkColorType.

Returns

one of: 0, 1, 2, 3, 4; left shift to convert pixels to bytes

example: https://fiddle.skia.org/c/@ImageInfo_shiftPerPixel

---

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

• /CHECKOUT/include/core/SkImageInfo.h