#include <LabU8ColorSpace.h>

Inheritance diagram for LabU8ColorSpace:

Public Member Functions
virtual KoColorSpace *	clone () const

KoID	colorDepthId () const override

void	colorFromXML (quint8 *pixel, const QDomElement &elt) const override

KoID	colorModelId () const override

void	colorToXML (const quint8 *pixel, QDomDocument &doc, QDomElement &colorElt) const override

void	convertChannelToVisualRepresentation (const quint8 src, quint8 dst, quint32 nPixels, const QBitArray selectedChannels) const override

void	convertChannelToVisualRepresentation (const quint8 src, quint8 dst, quint32 nPixels, const qint32 selectedChannelIndex) const override

QVector< double >	fromHSY (qreal hue, qreal sat, qreal *luma) const override

QVector< double >	fromYUV (qreal y, qreal u, qreal *v) const override

	LabU8ColorSpace (const QString &name, KoColorProfile *p)

quint8	scaleToU8 (const quint8 *srcPixel, qint32 channelIndex) const override

void	toHSY (const QVector< double > &channelValues, qreal hue, qreal sat, qreal *luma) const override

void	toYUV (const QVector< double > &channelValues, qreal y, qreal u, qreal *v) const override

bool	willDegrade (ColorSpaceIndependence independence) const override

Public Member Functions inherited from LcmsColorSpace< KoLabU8Traits >
KoColorTransformation *	createBrightnessContrastAdjustment (const quint16 *transferValues) const override

KoColorTransformation *	createPerChannelAdjustment (const quint16 const transferValues) const override

quint8	difference (const quint8 src1, const quint8 src2) const override

quint8	differenceA (const quint8 src1, const quint8 src2) const override

void	fromQColor (const QColor &color, quint8 *dst) const override

bool	hasHighDynamicRange () const override

const KoColorProfile *	profile () const override

bool	profileIsCompatible (const KoColorProfile *profile) const override

void	toQColor (const quint8 src, QColor color) const override

void	toQColor16 (const quint8 src, QColor color) const override

Public Member Functions inherited from KoColorSpaceAbstract< _CSTrait >
quint32	alphaPos () const override

void	applyAlphaNormedFloatMask (quint8 pixels, const float alpha, qint32 nPixels) const override

void	applyAlphaU8Mask (quint8 pixels, const quint8 alpha, qint32 nPixels) const override

void	applyInverseAlphaU8Mask (quint8 pixels, const quint8 alpha, qint32 nPixels) const override

void	applyInverseNormedFloatMask (quint8 pixels, const float alpha, qint32 nPixels) const override

quint32	channelCount () const override

QString	channelValueText (const quint8 *pixel, quint32 channelIndex) const override

quint32	colorChannelCount () const override

void	copyOpacityU8 (quint8 src, quint8 dst, qint32 nPixels) const override

KoColorTransformation *	createDarkenAdjustment (qint32 shade, bool compensate, qreal compensation) const override

KoColorTransformation *	createInvertTransformation () const override

void	fillGrayBrushWithColor (quint8 dst, const QRgb brush, quint8 *brushColor, qint32 nPixels) const override

void	fillInverseAlphaNormedFloatMaskWithColor (quint8 pixels, const float alpha, const quint8 *brushColor, qint32 nPixels) const override

void	fromNormalisedChannelsValue (quint8 *pixel, const QVector< float > &values) const override

quint8	intensity8 (const quint8 *src) const override

qreal	intensityF (const quint8 *src) const override

	KoColorSpaceAbstract (const QString &id, const QString &name)

void	multiplyAlpha (quint8 *pixels, quint8 alpha, qint32 nPixels) const override

void	normalisedChannelsValue (const quint8 *pixel, QVector< float > &channels) const override

QString	normalisedChannelValueText (const quint8 *pixel, quint32 channelIndex) const override

qreal	opacityF (const quint8 *U8_pixel) const override

quint8	opacityU8 (const quint8 *U8_pixel) const override

quint32	pixelSize () const override

void	setOpacity (quint8 *pixels, qreal alpha, qint32 nPixels) const override

void	setOpacity (quint8 *pixels, quint8 alpha, qint32 nPixels) const override

void	singleChannelPixel (quint8 dstPixel, const quint8 srcPixel, quint32 channelIndex) const override

Public Member Functions inherited from KoColorSpace
virtual void	addCompositeOp (const KoCompositeOp *op)

virtual void	addDitherOp (KisDitherOp *op)

virtual void	bitBlt (const KoColorSpace srcSpace, const KoCompositeOp::ParameterInfo &params, const KoCompositeOp op, KoColorConversionTransformation::Intent renderingIntent, KoColorConversionTransformation::ConversionFlags conversionFlags) const

QBitArray	channelFlags (bool color=true, bool alpha=false) const

QList< KoChannelInfo * >	channels () const

const KoCompositeOp *	compositeOp (const QString &id, const KoColorSpace *srcSpace=nullptr) const

virtual QList< KoCompositeOp * >	compositeOps () const

virtual bool	convertPixelsTo (const quint8 src, quint8 dst, const KoColorSpace *dstColorSpace, quint32 numPixels, KoColorConversionTransformation::Intent renderingIntent, KoColorConversionTransformation::ConversionFlags conversionFlags) const

virtual QImage	convertToQImage (const quint8 data, qint32 width, qint32 height, const KoColorProfile dstProfile, KoColorConversionTransformation::Intent renderingIntent, KoColorConversionTransformation::ConversionFlags conversionFlags) const

virtual KoConvolutionOp *	convolutionOp () const

virtual KoColorConversionTransformation *	createColorConverter (const KoColorSpace *dstColorSpace, KoColorConversionTransformation::Intent renderingIntent, KoColorConversionTransformation::ConversionFlags conversionFlags) const

KoColorTransformation *	createColorTransformation (const QString &id, const QHash< QString, QVariant > &parameters) const

virtual KoColorConversionTransformation *	createProofingTransform (const KoColorSpace dstColorSpace, const KoColorSpace proofingSpace, KoColorConversionTransformation::Intent renderingIntent, KoColorConversionTransformation::Intent proofingIntent, bool bpcFirstTransform, quint8 *gamutWarning, KoColorConversionTransformation::ConversionFlags displayConversionFlags) const
	createProofingTransform Create a proofing transform. This is a two part transform that can also do gamut checks. The first transform is from source -> proofing space. Here the gamut checks are performed. The second is the proofing to destination space.

virtual void	decreaseHue (quint8 *pixel, qreal step) const

virtual void	decreaseLuminosity (quint8 *pixel, qreal step) const

virtual void	decreaseSaturation (quint8 *pixel, qreal step) const

virtual const KisDitherOp *	ditherOp (const QString &depth, DitherType type) const

QPolygonF	estimatedTRCXYY () const

virtual void	fillGrayBrushWithColorAndLightnessOverlay (quint8 dst, const QRgb brush, quint8 *brushColor, qint32 nPixels) const

virtual void	fillGrayBrushWithColorAndLightnessWithStrength (quint8 dst, const QRgb brush, quint8 *brushColor, qreal strength, qint32 nPixels) const

virtual void	fromLabA16 (const quint8 src, quint8 dst, quint32 nPixels) const

virtual void	fromRgbA16 (const quint8 src, quint8 dst, quint32 nPixels) const

QPolygonF	gamutXYY () const

virtual bool	hasCompositeOp (const QString &id, const KoColorSpace *srcSpace=nullptr) const

QString	id () const

virtual void	increaseBlue (quint8 *pixel, qreal step) const

virtual void	increaseGreen (quint8 *pixel, qreal step) const

virtual void	increaseHue (quint8 *pixel, qreal step) const

virtual void	increaseLuminosity (quint8 *pixel, qreal step) const

virtual void	increaseRed (quint8 *pixel, qreal step) const

virtual void	increaseSaturation (quint8 *pixel, qreal step) const

virtual void	increaseYellow (quint8 *pixel, qreal step) const

	KoColorSpace (const QString &id, const QString &name, KoMixColorsOp mixColorsOp, KoConvolutionOp convolutionOp)
	Should be called by real color spaces.

QVector< qreal >	lumaCoefficients () const

virtual KoMixColorsOp *	mixColorsOp () const

virtual void	modulateLightnessByGrayBrush (quint8 dst, const QRgb brush, qreal strength, qint32 nPixels) const

QString	name () const

virtual bool	operator== (const KoColorSpace &rhs) const

virtual bool	proofPixelsTo (const quint8 src, quint8 dst, quint32 numPixels, KoColorConversionTransformation *proofingTransform) const
	proofPixelsTo

virtual void	toLabA16 (const quint8 src, quint8 dst, quint32 nPixels) const

virtual void	toRgbA16 (const quint8 src, quint8 dst, quint32 nPixels) const

virtual void	transparentColor (quint8 *dst, quint32 nPixels) const

Public Member Functions inherited from Private
	Private (KisCanvas2 *c)

Public Member Functions inherited from KoLcmsInfo
virtual cmsColorSpaceSignature	colorSpaceSignature () const

virtual quint32	colorSpaceType () const

	KoLcmsInfo (cmsUInt32Number cmType, cmsColorSpaceSignature colorSpaceSignature)

virtual	~KoLcmsInfo ()

Static Public Member Functions
static QString	colorSpaceId ()

Additional Inherited Members
Public Types inherited from KoColorSpaceAbstract< _CSTrait >
typedef _CSTrait	ColorSpaceTraits

Public Attributes inherited from KoColorSpace
ThreadLocalCache	channelFlagsApplicationCache

QList< KoChannelInfo * >	channels

QVector< qreal >	colorants

QHash< QString, KoCompositeOp * >	compositeOps

ThreadLocalCache	conversionCache

KoConvolutionOp *	convolutionOp

Deletability	deletability

QHash< QString, QMap< DitherType, KisDitherOp * > >	ditherOps

QPolygonF	gamutXYY

KoColorSpaceEngine *	iccEngine

QString	id

quint32	idNumber

QVector< qreal >	lumaCoefficients

KoMixColorsOp *	mixColorsOp

QString	name

KoColorConversionTransformation *	transfoFromLABA16

KoColorConversionTransformation *	transfoFromRGBA16

KoColorConversionTransformation *	transfoToLABA16

KoColorConversionTransformation *	transfoToRGBA16

QPolygonF	TRCXYY

Public Attributes inherited from Private
KisCanvas2 *	canvas

int	displayedFrame

int	intendedFrame

Protected Member Functions inherited from LcmsColorSpace< KoLabU8Traits >
void	init ()

	LcmsColorSpace (const QString &id, const QString &name, cmsUInt32Number cmType, cmsColorSpaceSignature colorSpaceSignature, KoColorProfile *p)

	~LcmsColorSpace () override

Protected Member Functions inherited from KoColorSpace
virtual void	addChannel (KoChannelInfo *ci)

const KoColorConversionTransformation *	fromLabA16Converter () const

const KoColorConversionTransformation *	fromRgbA16Converter () const

	KoColorSpace ()
	Only for use by classes that serve as baseclass for real color spaces.

virtual bool	preferCompositionInSourceColorSpace () const

const KoColorConversionTransformation *	toLabA16Converter () const

const KoColorConversionTransformation *	toRgbA16Converter () const

virtual	~KoColorSpace ()

Protected Attributes inherited from KoColorSpace
Private *const	d

Detailed Description

Definition at line 17 of file LabU8ColorSpace.h.

Constructor & Destructor Documentation

◆ LabU8ColorSpace()

LabU8ColorSpace::LabU8ColorSpace	(	const QString &	name,
		KoColorProfile *	p )

Definition at line 19 of file LabU8ColorSpace.cpp.

                                                                       :
    LcmsColorSpace<KoLabU8Traits>(colorSpaceId(), name, TYPE_LABA_8, cmsSigLabData, p)
{
    addChannel(new KoChannelInfo(i18nc("Lightness value in Lab color model", "Lightness"), 0 * sizeof(quint8), 0, KoChannelInfo::COLOR, KoChannelInfo::UINT8, sizeof(quint8), QColor(100, 100, 100)));
    addChannel(new KoChannelInfo(i18n("a*"),        1 * sizeof(quint8), 1, KoChannelInfo::COLOR, KoChannelInfo::UINT8, sizeof(quint8), QColor(150, 150, 150)));
    addChannel(new KoChannelInfo(i18n("b*"),        2 * sizeof(quint8), 2, KoChannelInfo::COLOR, KoChannelInfo::UINT8, sizeof(quint8), QColor(200, 200, 200)));
    addChannel(new KoChannelInfo(i18n("Alpha"),     3 * sizeof(quint8), 3, KoChannelInfo::ALPHA, KoChannelInfo::UINT8, sizeof(quint8)));
    init();
    addStandardCompositeOps<KoLabU8Traits>(this);
    addStandardDitherOps<KoLabU8Traits>(this);
}

References KoColorSpace::addChannel(), KoChannelInfo::ALPHA, KoChannelInfo::COLOR, LcmsColorSpace< KoLabU8Traits >::init(), and KoChannelInfo::UINT8.

Member Function Documentation

◆ clone()

KoColorSpace * LabU8ColorSpace::clone ( ) const

virtual

Definition at line 36 of file LabU8ColorSpace.cpp.

{
    return new LabU8ColorSpace(name(), profile()->clone());
}

References clone(), LabU8ColorSpace(), KoColorSpace::name, and LcmsColorSpace< KoLabU8Traits >::profile().

◆ colorDepthId()

KoID LabU8ColorSpace::colorDepthId ( ) const

inlineoverridevirtual

Returns: a string that identify the bit depth (for instance "U8" or "F16" ...)

See also: KoColorModelStandardIds.h

Implements KoColorSpace.

Definition at line 33 of file LabU8ColorSpace.h.

    {
        return Integer8BitsColorDepthID;
    }

References Integer8BitsColorDepthID.

◆ colorFromXML()

void LabU8ColorSpace::colorFromXML	(	quint8 *	pixel,
		const QDomElement &	elt ) const

overridevirtual

Unserialize a color following Create's swatch color specification available at https://web.archive.org/web/20110826002520/http://create.freedesktop.org/wiki/Swatches_-_color_file_format/Draft

Parameters

pixel	buffer where the color will be unserialized
elt	the element to unserialize (<CMYK />, <sRGB />, <RGB />)

Returns: the unserialize color, or an empty color object if the function failed to unserialize the color

Implements KoColorSpace.

Definition at line 72 of file LabU8ColorSpace.cpp.

{
    KoLabU8Traits::Pixel *p = reinterpret_cast<KoLabU8Traits::Pixel *>(pixel);
 
    double a = KisDomUtils::toDouble(elt.attribute("a"));
    double b = KisDomUtils::toDouble(elt.attribute("b"));
 
    // L will go from 0 to 100
 
    p->L = KoColorSpaceMaths<qreal, KoLabU8Traits::channels_type>::scaleToA(KisDomUtils::toDouble(elt.attribute("L"))*0.01f);
 
    KoLabU8Traits::channels_type halfValue = KoLabColorSpaceMathsTraits<KoLabU8Traits::channels_type>::halfValueAB;
 
    // a goes from  -128 to 127
    if(a <= 0) {
        a = (a/-128.0);
        p->a = halfValue - (a * halfValue);
    } else {
        a = fabs(a/127.0);
        p->a = (a * halfValue) + halfValue;
    }
 
    if(b <= 0) {
        b = (b/-128.0);
        p->b = halfValue - (b * halfValue);
    } else {
        b = fabs(b/127.0);
        p->b = (b * halfValue) + halfValue;
    }
 
    p->alpha = KoColorSpaceMathsTraits<quint8>::max;
}

References p, KoColorSpaceMaths< _T, _Tdst >::scaleToA(), and KisDomUtils::toDouble().

◆ colorModelId()

KoID LabU8ColorSpace::colorModelId ( ) const

inlineoverridevirtual

Returns: a string that identify the color model (for instance "RGB" or "CMYK" ...)

See also: KoColorModelStandardIds.h

Implements KoColorSpace.

Definition at line 28 of file LabU8ColorSpace.h.

    {
        return LABAColorModelID;
    }

References LABAColorModelID.

◆ colorSpaceId()

static QString LabU8ColorSpace::colorSpaceId ( )

inlinestatic

Definition at line 23 of file LabU8ColorSpace.h.

    {
        return QStringLiteral("LABAU8");
    }

◆ colorToXML()

void LabU8ColorSpace::colorToXML	(	const quint8 *	pixel,
		QDomDocument &	doc,
		QDomElement &	colorElt ) const

overridevirtual

Serialize this color following Create's swatch color specification available at https://web.archive.org/web/20110826002520/http://create.freedesktop.org/wiki/Swatches_-_color_file_format/Draft

This function doesn't create the <color /> element but rather the <CMYK />, <sRGB />, <RGB /> ... elements. It is assumed that colorElt is the <color /> element.

Parameters

pixel	buffer to serialized
colorElt	root element for the serialization, it is assumed that this element is <color />
doc	is the document containing colorElt

Implements KoColorSpace.

Definition at line 41 of file LabU8ColorSpace.cpp.

{
    const KoLabU8Traits::Pixel *p = reinterpret_cast<const KoLabU8Traits::Pixel *>(pixel);
    QDomElement labElt = doc.createElement("Lab");
 
    double a, b;
    KoLabU8Traits::channels_type halfValue = KoLabColorSpaceMathsTraits<KoLabU8Traits::channels_type>::halfValueAB;
 
    if (p->a <= halfValue) {
        a = double(double(halfValue - p->a) / halfValue);
        a = a * -128.0;
    } else {
        a = double(double(p->a - halfValue) / halfValue);
        a = 127.0 * a;
    }
 
    if (p->b <= halfValue) {
        b = double(double(halfValue - p->b) / halfValue);
        b = b * -128.0;
    } else {
        b = double(double(p->b - halfValue) / halfValue);
        b = 127.0 * b;
    }
 
    labElt.setAttribute("L", KisDomUtils::toString(KoColorSpaceMaths<KoLabU8Traits::channels_type, qreal>::scaleToA(p->L)*100.0f));
    labElt.setAttribute("a", KisDomUtils::toString(a));
    labElt.setAttribute("b", KisDomUtils::toString(b));
    labElt.setAttribute("space", profile()->name());
    colorElt.appendChild(labElt);
}

References KoColorSpace::name, p, LcmsColorSpace< KoLabU8Traits >::profile(), and KisDomUtils::toString().

◆ convertChannelToVisualRepresentation() [1/2]

void LabU8ColorSpace::convertChannelToVisualRepresentation	(	const quint8 *	src,
		quint8 *	dst,
		quint32	nPixels,
		const QBitArray	selectedChannels ) const

overridevirtual

Convert nPixels pixels in src into their human-visible visual representation. The channels are shown as if other channels were null (or, if Lab, L = 1.0, *a = *b = 0.0).

Both buffers are in the same color space.

Parameters

src	source buffer in (*this) color space
dst	destination buffer in the same color space as `src`
nPixels	length of the buffers in number of pixels
pixelSize	stride of each pixel in the destination buffer
selectedChannels	Bitmap of selected channels

Reimplemented from KoColorSpaceAbstract< _CSTrait >.

Definition at line 194 of file LabU8ColorSpace.cpp.

{
    for (uint pixelIndex = 0; pixelIndex < nPixels; ++pixelIndex) {
        for (uint channelIndex = 0; channelIndex < ColorSpaceTraits::channels_nb; ++channelIndex) {
            if (selectedChannels.testBit(channelIndex)) {
                ColorSpaceTraits::nativeArray((dst + (pixelIndex * ColorSpaceTraits::pixelSize)))[channelIndex] =
                    ColorSpaceTraits::nativeArray((src + (pixelIndex * ColorSpaceTraits::pixelSize)))[channelIndex];
            } else {
                ColorSpaceTraits::channels_type v;
                switch (channelIndex) {
                case ColorSpaceTraits::L_pos:
                    v = ColorSpaceTraits::math_trait::halfValueL;
                    break;
                case ColorSpaceTraits::a_pos:
                case ColorSpaceTraits::b_pos:
                    v = ColorSpaceTraits::math_trait::halfValueAB;
                    break;
                default:
                    v = ColorSpaceTraits::math_trait::zeroValue;
                    break;
                }
                ColorSpaceTraits::nativeArray((dst + (pixelIndex * ColorSpaceTraits::pixelSize)))[channelIndex] = v;
            }
        }
    }
}

References v.

◆ convertChannelToVisualRepresentation() [2/2]

void LabU8ColorSpace::convertChannelToVisualRepresentation	(	const quint8 *	src,
		quint8 *	dst,
		quint32	nPixels,
		const qint32	selectedChannelIndex ) const

overridevirtual

Convert nPixels pixels in src into their human-visible visual representation. The channel is shown as grayscale.

Both buffers are in the same color space.

Parameters

src	source buffer in (*this) color space
dst	destination buffer in the same color space as `src`
nPixels	length of the buffers in number of pixels
pixelSize	stride of each pixel in the destination buffer
selectedChannelIndex	Index of the selected channel.

Reimplemented from KoColorSpaceAbstract< _CSTrait >.

Definition at line 159 of file LabU8ColorSpace.cpp.

{
    for (uint pixelIndex = 0; pixelIndex < nPixels; ++pixelIndex) {
        for (uint channelIndex = 0; channelIndex < ColorSpaceTraits::channels_nb; ++channelIndex) {
            if (channelIndex != ColorSpaceTraits::alpha_pos) {
                if (channelIndex == ColorSpaceTraits::L_pos) {
                    ColorSpaceTraits::channels_type c = ColorSpaceTraits::nativeArray((src + (pixelIndex * ColorSpaceTraits::pixelSize)))[selectedChannelIndex];
                    switch (selectedChannelIndex) {
                    case ColorSpaceTraits::L_pos:
                        break;
                    case ColorSpaceTraits::a_pos:
                    case ColorSpaceTraits::b_pos:
                        if (c <= ColorSpaceTraits::math_trait::halfValueAB) {
                            c = ColorSpaceTraits::math_trait::unitValueL * (((qreal)c - ColorSpaceTraits::math_trait::zeroValueAB) / (2.0 * (ColorSpaceTraits::math_trait::halfValueAB - ColorSpaceTraits::math_trait::zeroValueAB)));
                        } else {
                            c = ColorSpaceTraits::math_trait::unitValueL * (0.5 + ((qreal)c - ColorSpaceTraits::math_trait::halfValueAB) / (2.0 * (ColorSpaceTraits::math_trait::unitValueAB - ColorSpaceTraits::math_trait::halfValueAB)));
                        }
                        break;
                    // As per KoChannelInfo alpha channels are [0..1]
                    default:
                        c = ColorSpaceTraits::math_trait::unitValueL * (qreal)c / ColorSpaceTraits::math_trait::unitValue;
                        break;
                    }
                    ColorSpaceTraits::nativeArray(dst + (pixelIndex * ColorSpaceTraits::pixelSize))[channelIndex] = c;
                } else {
                    ColorSpaceTraits::nativeArray(dst + (pixelIndex * ColorSpaceTraits::pixelSize))[channelIndex] = ColorSpaceTraits::math_trait::halfValueAB;
                }
            } else {
                ColorSpaceTraits::nativeArray((dst + (pixelIndex * ColorSpaceTraits::pixelSize)))[channelIndex] =
                    ColorSpaceTraits::nativeArray((src + (pixelIndex * ColorSpaceTraits::pixelSize)))[channelIndex];
            }
        }
    }
}

◆ fromHSY()

QVector< double > LabU8ColorSpace::fromHSY	(	qreal *	hue,
		qreal *	sat,
		qreal *	luma ) const

overridevirtual

Implements KoColorSpace.

Definition at line 110 of file LabU8ColorSpace.cpp.

{
    QVector <double> channelValues(4);
    LCHToLab(*luma, *sat, *hue, &channelValues[0],&channelValues[1],&channelValues[2]);
    channelValues[3]=1.0;
    return channelValues;
}

References LCHToLab().

◆ fromYUV()

QVector< double > LabU8ColorSpace::fromYUV	(	qreal *	y,
		qreal *	u,
		qreal *	v ) const

overridevirtual

Implements KoColorSpace.

Definition at line 125 of file LabU8ColorSpace.cpp.

{
    QVector <double> channelValues(4);
    channelValues[0]=*y;
    channelValues[1]=*u;
    channelValues[2]=*v;
    channelValues[3]=1.0;
    return channelValues;
}

References u, and v.

◆ scaleToU8()

quint8 LabU8ColorSpace::scaleToU8	(	const quint8 *	srcPixel,
		qint32	channelPos ) const

overridevirtual

Convert the value of the channel at the specified position into an 8-bit value. The position is not the number of bytes, but the position of the channel as defined in the channel info list.

Reimplemented from KoColorSpaceAbstract< _CSTrait >.

Definition at line 135 of file LabU8ColorSpace.cpp.

{
    typename ColorSpaceTraits::channels_type c = ColorSpaceTraits::nativeArray(srcPixel)[channelIndex];
    qreal b = 0;
    switch (channelIndex) {
    case ColorSpaceTraits::L_pos:
        b = ((qreal)c) / ColorSpaceTraits::math_trait::unitValueL;
        break;
    case ColorSpaceTraits::a_pos:
    case ColorSpaceTraits::b_pos:
        if (c <= ColorSpaceTraits::math_trait::halfValueAB) {
            b = ((qreal)c - ColorSpaceTraits::math_trait::zeroValueAB) / (2.0 * (ColorSpaceTraits::math_trait::halfValueAB - ColorSpaceTraits::math_trait::zeroValueAB));
        } else {
            b = 0.5 + ((qreal)c - ColorSpaceTraits::math_trait::halfValueAB) / (2.0 * (ColorSpaceTraits::math_trait::unitValueAB - ColorSpaceTraits::math_trait::halfValueAB));
        }
        break;
    default:
        b = ((qreal)c) / ColorSpaceTraits::math_trait::unitValue;
        break;
    }
 
    return KoColorSpaceMaths<qreal, quint8>::scaleToA(b);
}

References KoColorSpaceMaths< _T, _Tdst >::scaleToA().

◆ toHSY()

void LabU8ColorSpace::toHSY	(	const QVector< double > &	channelValues,
		qreal *	hue,
		qreal *	sat,
		qreal *	luma ) const

overridevirtual

Implements KoColorSpace.

Definition at line 105 of file LabU8ColorSpace.cpp.

{
    LabToLCH(channelValues[0],channelValues[1],channelValues[2], luma, sat, hue);
}

References LabToLCH().

◆ toYUV()

void LabU8ColorSpace::toYUV	(	const QVector< double > &	channelValues,
		qreal *	y,
		qreal *	u,
		qreal *	v ) const

overridevirtual

Implements KoColorSpace.

Definition at line 118 of file LabU8ColorSpace.cpp.

{
    *y =channelValues[0];
    *u=channelValues[1];
    *v=channelValues[2];
}

References u, and v.

◆ willDegrade()

bool LabU8ColorSpace::willDegrade ( ColorSpaceIndependence independence ) const

overridevirtual

If false, images in this colorspace will degrade considerably by functions, tools and filters that have the given measure of colorspace independence.

Parameters

independence the measure to which this colorspace will suffer from the manipulations of the tool or filter asking

Returns: false if no degradation will take place, true if degradation will take place

Implements KoColorSpace.

Definition at line 31 of file LabU8ColorSpace.cpp.

{
    return false;
}

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

plugins/color/lcms2engine/colorspaces/lab_u8/LabU8ColorSpace.h
plugins/color/lcms2engine/colorspaces/lab_u8/LabU8ColorSpace.cpp

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ LabU8ColorSpace()

Member Function Documentation

◆ clone()

◆ colorDepthId()

◆ colorFromXML()

◆ colorModelId()

◆ colorSpaceId()

◆ colorToXML()

◆ convertChannelToVisualRepresentation() [1/2]

◆ convertChannelToVisualRepresentation() [2/2]

◆ fromHSY()

◆ fromYUV()

◆ scaleToU8()

◆ toHSY()

◆ toYUV()

◆ willDegrade()