ColorSpace

class ColorSpace

Methods

Deserialize	Deserialize(data: capsule, length: int) -> skia.ColorSpace
Equals	Equals(self: skia.ColorSpace, other: skia.ColorSpace) -> bool
Make	Make(profile: skia.cms.ICCProfile) -> skia.ColorSpace
MakeRGB	MakeRGB(transferFn: skia.cms.TransferFunction, toXYZ: skia.cms.Matrix3x3) -> skia.ColorSpace
MakeSRGB	MakeSRGB() -> skia.ColorSpace
MakeSRGBLinear	MakeSRGBLinear() -> skia.ColorSpace
__init__
deref	deref(self: skia.ColorSpace) -> None
gammaCloseToSRGB	gammaCloseToSRGB(self: skia.ColorSpace) -> bool
gammaIsLinear	gammaIsLinear(self: skia.ColorSpace) -> bool
gamutTransformTo	gamutTransformTo(self: skia.ColorSpace, dst: skia.ColorSpace, src_to_dst: skia.cms.Matrix3x3) -> None
hash	hash(self: skia.ColorSpace) -> int
invTransferFn	invTransferFn(self: skia.ColorSpace, fn: skia.cms.TransferFunction) -> None
isNumericalTransferFn	isNumericalTransferFn(self: skia.ColorSpace, fn: skia.cms.TransferFunction) -> bool
isSRGB	isSRGB(self: skia.ColorSpace) -> bool
makeColorSpin	makeColorSpin(self: skia.ColorSpace) -> skia.ColorSpace
makeLinearGamma	makeLinearGamma(self: skia.ColorSpace) -> skia.ColorSpace
makeSRGBGamma	makeSRGBGamma(self: skia.ColorSpace) -> skia.ColorSpace
ref	ref(self: skia.ColorSpace) -> None
refCntGreaterThan	refCntGreaterThan(self: skia.ColorSpace, count: int) -> bool
serialize	serialize(self: skia.ColorSpace) -> SkData
toProfile	toProfile(self: skia.ColorSpace) -> skia.cms.ICCProfile
toXYZD50	toXYZD50(self: skia.ColorSpace, matrix: skia.cms.Matrix3x3) -> bool
toXYZD50Hash	toXYZD50Hash(self: skia.ColorSpace) -> int
transferFn	transferFn(*args, **kwargs) Overloaded function.
transferFnHash	transferFnHash(self: skia.ColorSpace) -> int
unique	unique(self: skia.ColorSpace) -> bool
unref	unref(self: skia.ColorSpace) -> None
writeToMemory	writeToMemory(self: skia.ColorSpace, memory: capsule) -> int

Methods

static ColorSpace.Deserialize(data: capsule, length: int) → skia.ColorSpace

static ColorSpace.Equals(self: skia.ColorSpace, other: skia.ColorSpace) → bool

If both are null, we return true.

If one is null and the other is not, we return false. If both are non-null, we do a deeper compare.

static ColorSpace.Make(profile: skia.cms.ICCProfile) → skia.ColorSpace

Create an ColorSpace from a parsed (skcms) ICC profile.

static ColorSpace.MakeRGB(transferFn: skia.cms.TransferFunction, toXYZ: skia.cms.Matrix3x3) → skia.ColorSpace

Create an ColorSpace from a transfer function and a row-major 3x3 transformation to XYZ.

static ColorSpace.MakeSRGB() → skia.ColorSpace

Create the sRGB color space.

static ColorSpace.MakeSRGBLinear() → skia.ColorSpace

Colorspace with the sRGB primaries, but a linear (1.0) gamma.

ColorSpace.__init__(*args, **kwargs)

ColorSpace.deref(self: skia.ColorSpace) → None

ColorSpace.gammaCloseToSRGB(self: skia.ColorSpace) → bool

Returns true if the color space gamma is near enough to be approximated as sRGB.

ColorSpace.gammaIsLinear(self: skia.ColorSpace) → bool

Returns true if the color space gamma is linear.

ColorSpace.gamutTransformTo(self: skia.ColorSpace, dst: skia.ColorSpace, src_to_dst: skia.cms.Matrix3x3) → None

ColorSpace.hash(self: skia.ColorSpace) → int

ColorSpace.invTransferFn(self: skia.ColorSpace, fn: skia.cms.TransferFunction) → None

ColorSpace.isNumericalTransferFn(self: skia.ColorSpace, fn: skia.cms.TransferFunction) → bool

Sets |fn| to the transfer function from this color space.

Returns true if the transfer function can be represented as coefficients to the standard ICC 7-parameter equation. Returns false otherwise (eg, PQ, HLG).

ColorSpace.isSRGB(self: skia.ColorSpace) → bool

Returns true if the color space is sRGB.

Returns false otherwise.

This allows a little bit of tolerance, given that we might see small numerical error in some cases: converting ICC fixed point to float, converting white point to D50, rounding decisions on transfer function and matrix.

This does not consider a 2.2f exponential transfer function to be sRGB. While these functions are similar (and it is sometimes useful to consider them together), this function checks for logical equality.

ColorSpace.makeColorSpin(self: skia.ColorSpace) → skia.ColorSpace

Returns a color space with the same transfer function as this one, but with the primary colors rotated.

For any XYZ space, this produces a new color space that maps RGB to GBR (when applied to a source), and maps RGB to BRG (when applied to a destination). For other types of color spaces, returns nullptr.

This is used for testing, to construct color spaces that have severe and testable behavior.

ColorSpace.makeLinearGamma(self: skia.ColorSpace) → skia.ColorSpace

Returns a color space with the same gamut as this one, but with a linear gamma.

For color spaces whose gamut can not be described in terms of XYZ D50, returns linear sRGB.

ColorSpace.makeSRGBGamma(self: skia.ColorSpace) → skia.ColorSpace

Returns a color space with the same gamut as this one, with with the sRGB transfer function.

For color spaces whose gamut can not be described in terms of XYZ D50, returns sRGB.

ColorSpace.ref(self: skia.ColorSpace) → None

ColorSpace.refCntGreaterThan(self: skia.ColorSpace, count: int) → bool

ColorSpace.serialize(self: skia.ColorSpace) → SkData

Returns nullptr on failure.

Fails when we fallback to serializing ICC data and the data is too large to serialize.

ColorSpace.toProfile(self: skia.ColorSpace) → skia.cms.ICCProfile

Convert this color space to an skcms ICC profile struct.

ColorSpace.toXYZD50(self: skia.ColorSpace, matrix: skia.cms.Matrix3x3) → bool

Returns true and sets |toXYZD50| if the color gamut can be described as a matrix.

Returns false otherwise.

ColorSpace.toXYZD50Hash(self: skia.ColorSpace) → int

Returns a hash of the gamut transformation to XYZ D50.

Allows for fast equality checking of gamuts, at the (very small) risk of collision.

ColorSpace.transferFn(*args, **kwargs)

Overloaded function.

1. transferFn(self: skia.ColorSpace, gabcdef: float) -> None

2. transferFn(self: skia.ColorSpace, fn: skia.cms.TransferFunction) -> None

ColorSpace.transferFnHash(self: skia.ColorSpace) → int

ColorSpace.unique(self: skia.ColorSpace) → bool

ColorSpace.unref(self: skia.ColorSpace) → None

ColorSpace.writeToMemory(self: skia.ColorSpace, memory: capsule) → int

If |memory| is nullptr, returns the size required to serialize.

Otherwise, serializes into |memory| and returns the size.