KoColorConversionToAlphaTransformation< alpha_channel_type > Class Template Reference

Inheritance diagram for KoColorConversionToAlphaTransformation< alpha_channel_type >:

Public Member Functions
	KoColorConversionToAlphaTransformation (const KoColorSpace *srcCs, const KoColorSpace *dstCs, Intent renderingIntent, ConversionFlags conversionFlags)
void	transform (const quint8 *src, quint8 *dst, qint32 nPixels) const override
Public Member Functions inherited from KoColorConversionTransformation
ConversionFlags	conversionFlags () const
const KoColorSpace *	dstColorSpace () const
bool	isValid () const override
	KoColorConversionTransformation (const KoColorSpace *srcCs, const KoColorSpace *dstCs, Intent renderingIntent, ConversionFlags conversionFlags)
Intent	renderingIntent () const
const KoColorSpace *	srcColorSpace () const
void	transformInPlace (const quint8 *src, quint8 *dst, qint32 nPixels) const
	~KoColorConversionTransformation () override
Public Member Functions inherited from Private
	Private (KisCanvas2 *c)
Public Member Functions inherited from KoColorTransformation
virtual int	parameterId (const QString &name) const
virtual QList< QString >	parameters () const
virtual void	setParameter (int id, const QVariant &parameter)
void	setParameters (const QHash< QString, QVariant > &parameters)
virtual	~KoColorTransformation ()

Additional Inherited Members
Public Types inherited from KoColorConversionTransformation
enum	ConversionFlag {   Empty = 0x0 , NoOptimization = 0x0100 , GamutCheck = 0x1000 , SoftProofing = 0x4000 ,   BlackpointCompensation = 0x2000 , NoWhiteOnWhiteFixup = 0x0004 , HighQuality = 0x0400 , LowQuality = 0x0800 ,   CopyAlpha = 0x04000000 , NoAdaptationAbsoluteIntent = 01000000 }
enum	Intent { IntentPerceptual = 0 , IntentRelativeColorimetric = 1 , IntentSaturation = 2 , IntentAbsoluteColorimetric = 3 }
Static Public Member Functions inherited from KoColorConversionTransformation
static ConversionFlags	adjustmentConversionFlags ()
static Intent	adjustmentRenderingIntent ()
static ConversionFlags	internalConversionFlags ()
static Intent	internalRenderingIntent ()
Public Attributes inherited from KoColorConversionTransformation
ConversionFlags	conversionFlags
const KoColorSpace *	dstColorSpace
Intent	renderingIntent
const KoColorSpace *	srcColorSpace
Public Attributes inherited from Private
KisCanvas2 *	canvas
int	displayedFrame
int	intendedFrame

Detailed Description

template<typename alpha_channel_type>
class KoColorConversionToAlphaTransformation< alpha_channel_type >

Converter to the alpha color space to any color space

Definition at line 170 of file KoColorConversionAlphaTransformation.cpp.

Constructor & Destructor Documentation

KoColorConversionToAlphaTransformation()

template<typename alpha_channel_type >

KoColorConversionToAlphaTransformation< alpha_channel_type >::KoColorConversionToAlphaTransformation ( const KoColorSpace * srcCs, const KoColorSpace * dstCs, Intent renderingIntent, ConversionFlags conversionFlags )

inline

Definition at line 173 of file KoColorConversionAlphaTransformation.cpp.

        : KoColorConversionTransformation(srcCs, dstCs, renderingIntent, conversionFlags)
    {
    }

Member Function Documentation

transform()

template<typename alpha_channel_type >

void KoColorConversionToAlphaTransformation< alpha_channel_type >::transform ( const quint8 * src, quint8 * dst, qint32 nPixels ) const

inlineoverridevirtual

perform the color conversion between two buffers. Make sure that src is not the same as dst!

Parameters

nPixels

the number of pixels in the buffers.

Implements KoColorConversionTransformation.

Definition at line 178 of file KoColorConversionAlphaTransformation.cpp.

                                                                                  {
        alpha_channel_type *dstPtr = reinterpret_cast<alpha_channel_type*>(dst);
 
        quint16 data[4];
        qint32 pixelSize = srcColorSpace()->pixelSize();
 
        while (nPixels > 0) {
            srcColorSpace()->toLabA16(src, (quint8*)data, 1);
            *dstPtr = KoColorSpaceMaths<quint16, alpha_channel_type>::scaleToA(UINT16_MULT(data[0], data[3])); // L * A
 
            src += pixelSize;
            dstPtr ++;
            nPixels --;
 
        }
    }

References KoColorSpaceMaths< _T, _Tdst >::scaleToA(), and UINT16_MULT().

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

• libs/pigment/KoColorConversionAlphaTransformation.cpp