KoGenericLabHistogramProducer Class Reference

#include <KoBasicHistogramProducers.h>

Inheritance diagram for KoGenericLabHistogramProducer:

Public Member Functions
void	addRegionToBin (const quint8 *pixels, const quint8 *selectionMask, quint32 nPixels, const KoColorSpace *colorSpace) override
QList< KoChannelInfo * >	channels () override
	KoGenericLabHistogramProducer ()
qreal	maximalZoom () const override
QString	positionToString (qreal pos) const override
	~KoGenericLabHistogramProducer () override
Public Member Functions inherited from KoBasicHistogramProducer
void	clear () override
qint32	count () override
qint32	getBinAt (int channel, int position) override
const KoID &	id () const override
	KoBasicHistogramProducer (const KoID &id, int channelCount, int nrOfBins)
	KoBasicHistogramProducer (const KoID &id, int nrOfBins, const KoColorSpace *colorSpace)
qint32	numberOfBins () override
qint32	outOfViewLeft (int channel) override
qint32	outOfViewRight (int channel) override
void	setView (qreal from, qreal size) override
qreal	viewFrom () const override
qreal	viewWidth () const override
	~KoBasicHistogramProducer () override
Public Member Functions inherited from KoHistogramProducer
virtual qint32	getBinAt (qint32 channel, qint32 position)=0
	KoHistogramProducer ()
virtual qint32	outOfViewLeft (qint32 channel)=0
virtual qint32	outOfViewRight (qint32 channel)=0
virtual void	setSkipTransparent (bool set)
virtual void	setSkipUnselected (bool set)
virtual	~KoHistogramProducer ()

Protected Attributes
QList< KoChannelInfo * >	m_channelsList
Protected Attributes inherited from KoBasicHistogramProducer
QVector< vBins >	m_bins
int	m_channels
const KoColorSpace *	m_colorSpace
qint32	m_count
QVector< qint32 >	m_external
qreal	m_from
KoID	m_id
int	m_nrOfBins
vBins	m_outLeft
vBins	m_outRight
qreal	m_width
Protected Attributes inherited from KoHistogramProducer
bool	m_skipTransparent
bool	m_skipUnselected

Additional Inherited Members
Protected Types inherited from KoBasicHistogramProducer
typedef QVector< quint32 >	vBins
Protected Member Functions inherited from KoBasicHistogramProducer
virtual int	externalToInternal (int ext)
void	makeExternalToInternal ()

Detailed Description

This is a Producer (with associated factory) that converts the pixels of the colorspace to L*a*b*, and then does its counting. It isCompatibleWith all colorspaces

Definition at line 220 of file KoBasicHistogramProducers.h.

Constructor & Destructor Documentation

KoGenericLabHistogramProducer()

KoGenericLabHistogramProducer::KoGenericLabHistogramProducer

(

)

Definition at line 432 of file KoBasicHistogramProducers.cpp.

    : KoBasicHistogramProducer(KoID("GENLABHISTO", i18n("L*a*b* Histogram")), 3, 256)
{
    /* we set 0 as colorspace, because we are not based on a specific colorspace. This
       is no problem for the superclass since we override channels() */
    m_channelsList.append(new KoChannelInfo(i18n("L*"), 0, 0, KoChannelInfo::COLOR, KoChannelInfo::UINT8));
    m_channelsList.append(new KoChannelInfo(i18n("a*"), 1, 1, KoChannelInfo::COLOR, KoChannelInfo::UINT8));
    m_channelsList.append(new KoChannelInfo(i18n("b*"), 2, 2, KoChannelInfo::COLOR, KoChannelInfo::UINT8));
 
    if (!m_labCs) {
        m_labCs = KoColorSpaceRegistry::instance()->lab16();
    }
    m_colorSpace = m_labCs;
}

References KoChannelInfo::COLOR, KoColorSpaceRegistry::instance(), KoColorSpaceRegistry::lab16(), m_channelsList, KoBasicHistogramProducer::m_colorSpace, m_labCs, and KoChannelInfo::UINT8.

~KoGenericLabHistogramProducer()

KoGenericLabHistogramProducer::~KoGenericLabHistogramProducer ( )

override

Definition at line 446 of file KoBasicHistogramProducers.cpp.

{
    delete m_channelsList[0];
    delete m_channelsList[1];
    delete m_channelsList[2];
}

References m_channelsList.

Member Function Documentation

addRegionToBin()

void KoGenericLabHistogramProducer::addRegionToBin ( const quint8 * pixels, const quint8 * selectionMask, quint32 nPixels, const KoColorSpace * colorSpace )

overridevirtual

Adds the values from the specified array of pixels to the bins – does not reset anything.

Parameters

pixels	A pointer an array of pixeldata in the given colorspace
selectionMask	a pointer to an array of bytes, where 0 is unselected and 1-255 is degree of selectedness. The array must be just as long as the array of pixels.
nPixels	The number of pixels
colorSpace	the colorspace that can decode the pixel data.

Implements KoHistogramProducer.

Definition at line 469 of file KoBasicHistogramProducers.cpp.

{
    for (int i = 0; i < m_channels; i++) {
        m_outRight[i] = 0;
        m_outLeft[i] = 0;
    }
 
    qint32 dstPixelSize = m_colorSpace->pixelSize();
 
    quint8 *dstPixels = new quint8[nPixels * dstPixelSize];
    cs->convertPixelsTo(pixels, dstPixels, m_colorSpace, nPixels, KoColorConversionTransformation::IntentAbsoluteColorimetric, KoColorConversionTransformation::Empty);
 
    qint32 pSize = cs->pixelSize();
 
    if (selectionMask) {
        while (nPixels > 0) {
            if (!((m_skipUnselected  && *selectionMask == 0) || (m_skipTransparent && cs->opacityU8(pixels) == OPACITY_TRANSPARENT_U8))) {
                m_count++;
            }
            pixels += pSize;
            selectionMask++;
            nPixels--;
        }
    } else {
        quint8 *dst = dstPixels;
        while (nPixels > 0) {
            if (!(m_skipTransparent && cs->opacityU8(pixels) == OPACITY_TRANSPARENT_U8))  {
 
                m_bins[0][m_colorSpace->scaleToU8(dst, 0)]++;
                m_bins[1][m_colorSpace->scaleToU8(dst, 1)]++;
                m_bins[2][m_colorSpace->scaleToU8(dst, 2)]++;
 
                m_count++;
            }
            dst+= dstPixelSize;
            nPixels--;
        }
    }
    delete[] dstPixels;
}

References KoColorSpace::convertPixelsTo(), KoColorConversionTransformation::Empty, KoColorConversionTransformation::IntentAbsoluteColorimetric, KoBasicHistogramProducer::m_bins, KoBasicHistogramProducer::m_channels, KoBasicHistogramProducer::m_colorSpace, KoBasicHistogramProducer::m_count, KoBasicHistogramProducer::m_outLeft, KoBasicHistogramProducer::m_outRight, KoHistogramProducer::m_skipTransparent, KoHistogramProducer::m_skipUnselected, OPACITY_TRANSPARENT_U8, KoColorSpace::opacityU8(), KoColorSpace::pixelSize(), and KoColorSpace::scaleToU8().

channels()

QList< KoChannelInfo * > KoGenericLabHistogramProducer::channels ( )

overridevirtual

Reimplemented from KoBasicHistogramProducer.

Definition at line 453 of file KoBasicHistogramProducers.cpp.

{
    return m_channelsList;
}

References m_channelsList.

maximalZoom()

qreal KoGenericLabHistogramProducer::maximalZoom ( ) const

overridevirtual

Implements KoHistogramProducer.

Definition at line 463 of file KoBasicHistogramProducers.cpp.

{
    return 1.0;
}

positionToString()

QString KoGenericLabHistogramProducer::positionToString ( qreal pos ) const

overridevirtual

Implements KoHistogramProducer.

Definition at line 458 of file KoBasicHistogramProducers.cpp.

{
    return QString("%1").arg(static_cast<quint16>(pos * UINT16_MAX));
}

References UINT16_MAX.

Member Data Documentation

m_channelsList

QList<KoChannelInfo *> KoGenericLabHistogramProducer::m_channelsList

protected

Definition at line 230 of file KoBasicHistogramProducers.h.

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

• libs/pigment/KoBasicHistogramProducers.h
• libs/pigment/KoBasicHistogramProducers.cpp