RgbCompositeOpIn< _CSTraits > Class Template Reference

#include <RgbCompositeOpIn.h>

Inheritance diagram for RgbCompositeOpIn< _CSTraits >:

Public Member Functions
void	composite (const KoCompositeOp::ParameterInfo &params) const override
virtual void	composite (const ParameterInfo &params) const
void	composite (quint8 *dstRowStart, qint32 dstRowStride, const quint8 *srcRowStart, qint32 srcRowStride, const quint8 *maskRowStart, qint32 maskRowStride, qint32 rows, qint32 numColumns, float opacity, const QBitArray &channelFlags=QBitArray()) const
	RgbCompositeOpIn (KoColorSpace *cs)
Public Member Functions inherited from KoCompositeOp
QString	category () const
const KoColorSpace *	colorSpace () const
void	composite (quint8 *dstRowStart, qint32 dstRowStride, const quint8 *srcRowStart, qint32 srcRowStride, const quint8 *maskRowStart, qint32 maskRowStride, qint32 rows, qint32 numColumns, float opacity, const QBitArray &channelFlags=QBitArray()) const
QString	description () const
QString	id () const
	KoCompositeOp (const KoColorSpace *cs, const QString &id, const QString &category=KoCompositeOp::categoryMisc())
virtual	~KoCompositeOp ()
Public Member Functions inherited from Private
	Private (KisCanvas2 *c)

Private Types
typedef _CSTraits::channels_type	channels_type
typedef KoColorSpaceMathsTraits< typename_CSTraits::channels_type >::compositetype	compositetype

Additional Inherited Members
Static Public Member Functions inherited from KoCompositeOp
static QString	categoryArithmetic ()
static QString	categoryBinary ()
static QString	categoryDark ()
static QString	categoryHSI ()
static QString	categoryHSL ()
static QString	categoryHSV ()
static QString	categoryHSY ()
static QString	categoryLight ()
static QString	categoryMisc ()
static QString	categoryMix ()
static QString	categoryModulo ()
static QString	categoryNegative ()
static QString	categoryQuadratic ()
Public Attributes inherited from KoCompositeOp
QString	category
const KoColorSpace *	colorSpace
QBitArray	defaultChannelFlags
QString	description
QString	id
Public Attributes inherited from Private
KisCanvas2 *	canvas
int	displayedFrame
int	intendedFrame

Detailed Description

template<class _CSTraits>
class RgbCompositeOpIn< _CSTraits >

Definition at line 16 of file RgbCompositeOpIn.h.

Member Typedef Documentation

channels_type

template<class _CSTraits >

typedef _CSTraits::channels_type RgbCompositeOpIn< _CSTraits >::channels_type

private

Definition at line 18 of file RgbCompositeOpIn.h.

compositetype

template<class _CSTraits >

typedef KoColorSpaceMathsTraits<typename_CSTraits::channels_type>::compositetype RgbCompositeOpIn< _CSTraits >::compositetype

private

Definition at line 19 of file RgbCompositeOpIn.h.

Constructor & Destructor Documentation

RgbCompositeOpIn()

template<class _CSTraits >

RgbCompositeOpIn< _CSTraits >::RgbCompositeOpIn ( KoColorSpace * cs )

inline

Definition at line 23 of file RgbCompositeOpIn.h.

        : KoCompositeOp(cs, COMPOSITE_IN, "")
    {
    }

Member Function Documentation

composite() [1/3]

template<class _CSTraits >

void RgbCompositeOpIn< _CSTraits >::composite ( const KoCompositeOp::ParameterInfo & params ) const

inlineoverridevirtual

Same as previous, but uses a parameter structure

Reimplemented from KoCompositeOp.

Definition at line 30 of file RgbCompositeOpIn.h.

    {
        channels_type opacity = KoColorSpaceMaths<float, channels_type>::scaleToA(params.opacity);
 
        if (opacity == NATIVE_OPACITY_TRANSPARENT) {
            return;
        }
 
        const quint8 *srcRowStart = params.srcRowStart;
        quint8 *dstRowStart = params.dstRowStart;
 
        qint32 rows = params.rows;
 
        qint32 i;
 
        //qreal sAlpha, dAlpha;
        qreal alpha;
 
        while (rows-- > 0) {
            channels_type *d = reinterpret_cast<channels_type *>(dstRowStart);
            const channels_type *s = reinterpret_cast<const channels_type *>(srcRowStart);
 
            for (i = params.cols; i > 0; i--, d += _CSTraits::channels_nb, s += _CSTraits::channels_nb) {
 
                if (s[_CSTraits::alpha_pos] == NATIVE_OPACITY_TRANSPARENT) {
                    d[_CSTraits::alpha_pos] = NATIVE_OPACITY_TRANSPARENT;
                    continue;
                } else if (s[_CSTraits::alpha_pos] == NATIVE_OPACITY_OPAQUE) {
                    continue;
                }
                if (d[_CSTraits::alpha_pos] == NATIVE_OPACITY_TRANSPARENT) {
                    continue;
                }
 
                alpha = (qreal)(s[_CSTraits::alpha_pos]) * d[_CSTraits::alpha_pos] / NATIVE_OPACITY_OPAQUE;
 
                if (params.channelFlags.isEmpty() || params.channelFlags.testBit(_CSTraits::alpha_pos)) {
                    d[_CSTraits::alpha_pos] = (channels_type)((d[_CSTraits::alpha_pos] * alpha / NATIVE_OPACITY_OPAQUE) + 0.5);
                }
 
            }
            dstRowStart += params.dstRowStride;
            srcRowStart += params.srcRowStride;
        }
    }

References KoCompositeOp::ParameterInfo::channelFlags, KoCompositeOp::ParameterInfo::cols, KoCompositeOp::d, KoCompositeOp::ParameterInfo::dstRowStart, KoCompositeOp::ParameterInfo::dstRowStride, NATIVE_OPACITY_OPAQUE, NATIVE_OPACITY_TRANSPARENT, KoCompositeOp::ParameterInfo::opacity, KoCompositeOp::ParameterInfo::rows, KoColorSpaceMaths< _T, _Tdst >::scaleToA(), KoCompositeOp::ParameterInfo::srcRowStart, and KoCompositeOp::ParameterInfo::srcRowStride.

composite() [2/3]

template<class _CSTraits >

void KoCompositeOp::composite ( const ParameterInfo & params ) const

virtual

Same as previous, but uses a parameter structure

Reimplemented from KoCompositeOp.

Definition at line 123 of file KoCompositeOp.cpp.

{
    composite(params.dstRowStart           , params.dstRowStride ,
              params.srcRowStart           , params.srcRowStride ,
              params.maskRowStart          , params.maskRowStride,
              params.rows                  , params.cols         ,
              params.opacity, params.channelFlags );
}

composite() [3/3]

template<class _CSTraits >

void KoCompositeOp::composite	(	quint8 *	dstRowStart,
		qint32	dstRowStride,
		const quint8 *	srcRowStart,
		qint32	srcRowStride,
		const quint8 *	maskRowStart,
		qint32	maskRowStride,
		qint32	rows,
		qint32	numColumns,
		float	opacity,
		const QBitArray &	channelFlags = QBitArray() ) const

Parameters

dstRowStart	pointer to the start of the byte array we will composite the source on
dstRowStride	length of the rows of the block of destination pixels in bytes
srcRowStart	pointer to the start of the byte array we will mix with dest
srcRowStride	length of the rows of the block of src in bytes pixels (may be different from the rowstride of the dst pixels, in which case the smaller value is used). If srcRowStride is null it is assumed that the source is a constant color.
maskRowStart	start of the byte mask that determines whether and if so, then how much of src is used for blending
maskRowStride	length of the mask scanlines in bytes
rows	number of scanlines to blend
numColumns	length of the row of pixels in pixels
opacity	transparency with which to blend
channelFlags	a bit array that determines which channels should be processed (channels are in the order of the channels in the colorspace)

Definition at line 113 of file KoCompositeOp.cpp.

{
    KoCompositeOp::ParameterInfo params;
    params.dstRowStart   = dstRowStart;
    params.dstRowStride  = dstRowStride;
    params.srcRowStart   = srcRowStart;
    params.srcRowStride  = srcRowStride;
    params.maskRowStart  = maskRowStart;
    params.maskRowStride = maskRowStride;
    params.rows          = rows;
    params.cols          = numColumns;
    params.opacity       = opacity;
    params.flow          = 1.0f;
    params.channelFlags  = channelFlags;
    composite(params);
}

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

• plugins/color/lcms2engine/compositeops/RgbCompositeOpIn.h