#include <noisefilter.h>

Inheritance diagram for KisFilterNoise:

Public Member Functions
KisConfigWidget *	createConfigurationWidget (QWidget *parent, const KisPaintDeviceSP dev, bool useForMasks) const override

KisFilterConfigurationSP	defaultConfiguration (KisResourcesInterfaceSP resourcesInterface) const override

	KisFilterNoise ()

void	processImpl (KisPaintDeviceSP device, const QRect &applyRect, const KisFilterConfigurationSP config, KoUpdater *progressUpdater) const override

Public Member Functions inherited from KisFilter
virtual QRect	changedRect (const QRect &rect, const KisFilterConfigurationSP config, int lod) const

virtual bool	configurationAllowedForMask (KisFilterConfigurationSP config) const

virtual void	fixLoadedFilterConfigurationForMasks (KisFilterConfigurationSP config) const

	KisFilter (const KoID &id, const KoID &category, const QString &entry)

virtual QRect	neededRect (const QRect &rect, const KisFilterConfigurationSP config, int lod) const

virtual bool	needsTransparentPixels (const KisFilterConfigurationSP config, const KoColorSpace *cs) const

void	process (const KisPaintDeviceSP src, KisPaintDeviceSP dst, KisSelectionSP selection, const QRect &applyRect, const KisFilterConfigurationSP config, KoUpdater *progressUpdater=0) const

void	process (KisPaintDeviceSP device, const QRect &applyRect, const KisFilterConfigurationSP config, KoUpdater *progressUpdater=0) const

virtual bool	supportsLevelOfDetail (const KisFilterConfigurationSP config, int lod) const

	~KisFilter () override

Public Member Functions inherited from KisBaseProcessor
KisBookmarkedConfigurationManager *	bookmarkManager ()

const KisBookmarkedConfigurationManager *	bookmarkManager () const

ColorSpaceIndependence	colorSpaceIndependence () const

virtual KisFilterConfigurationSP	factoryConfiguration (KisResourcesInterfaceSP resourcesInterface) const

QString	id () const

	KisBaseProcessor (const KoID &id, const KoID &category, const QString &entry)

KoID	menuCategory () const

QString	menuEntry () const

QString	name () const

	Private ()

QKeySequence	shortcut () const

bool	showConfigurationWidget ()
	If true, the filter wants to show a configuration widget.

bool	supportsAdjustmentLayers () const
	This filter can be used in adjustment layers.

bool	supportsPainting () const

bool	supportsThreading () const

virtual	~KisBaseProcessor ()

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

Public Member Functions inherited from KisShared
bool	deref ()

bool	ref ()

int	refCount ()

QAtomicInt *	sharedWeakReference ()

Static Public Member Functions
static KoID	id ()

Additional Inherited Members
Public Attributes inherited from KisBaseProcessor
KisBookmarkedConfigurationManager *	bookmarkManager

KoID	category

ColorSpaceIndependence	colorSpaceIndependence

QString	entry

KoID	id

QKeySequence	shortcut

bool	showConfigurationWidget

bool	supportsAdjustmentLayers

bool	supportsPainting

bool	supportsThreading

Public Attributes inherited from Private
KisCanvas2 *	canvas

int	displayedFrame

int	intendedFrame

Protected Member Functions inherited from KisFilter
QString	configEntryGroup () const

void	setSupportsLevelOfDetail (bool value)

Protected Member Functions inherited from KisBaseProcessor
void	init (const QString &configEntryGroup)

void	setColorSpaceIndependence (ColorSpaceIndependence v)

void	setShortcut (const QKeySequence &shortcut)

void	setShowConfigurationWidget (bool v)

void	setSupportsAdjustmentLayers (bool v)

void	setSupportsPainting (bool v)

void	setSupportsThreading (bool v)

Protected Member Functions inherited from KisShared
	KisShared ()

	~KisShared ()

Detailed Description

Definition at line 26 of file noisefilter.h.

Constructor & Destructor Documentation

◆ KisFilterNoise()

KisFilterNoise::KisFilterNoise ( )

Definition at line 42 of file noisefilter.cpp.

                               : KisFilter(id(), FiltersCategoryOtherId, i18n("&Random Noise..."))
{
    setColorSpaceIndependence(FULLY_INDEPENDENT);
    setSupportsPainting(true);
}

References FULLY_INDEPENDENT, KisBaseProcessor::setColorSpaceIndependence(), and KisBaseProcessor::setSupportsPainting().

Member Function Documentation

◆ createConfigurationWidget()

KisConfigWidget * KisFilterNoise::createConfigurationWidget	(	QWidget *	parent,
		const KisPaintDeviceSP	dev,
		bool	useForMasks ) const

overridevirtual

Create the configuration widget for this processor.

Parameters

parent	the Qt owner widget of this widget
dev	the paintdevice this filter will act on
useForMasks	shown if the filer is going to be used in a mask. Some filters may provide limited options when applied as a mask (e.g. Gaussian Blur)

Reimplemented from KisBaseProcessor.

Definition at line 61 of file noisefilter.cpp.

{
    Q_UNUSED(dev);
    return new KisWdgNoise((KisFilter*)this, (QWidget*)parent);
}

◆ defaultConfiguration()

KisFilterConfigurationSP KisFilterNoise::defaultConfiguration ( KisResourcesInterfaceSP resourcesInterface ) const

overridevirtual

Return the configuration set as the default by the user or the default configuration from the filter writer as returned by factoryConfiguration.

This configuration is used by default for the configuration widget and given to the process function if there is no configuration widget.

Returns: the default configuration of this widget

Reimplemented from KisBaseProcessor.

Definition at line 48 of file noisefilter.cpp.

{
    KisFilterConfigurationSP config = factoryConfiguration(resourcesInterface);
    config->setProperty("level", 50);
    config->setProperty("opacity", 100);
    config->setProperty("seedThreshold", rand());
    config->setProperty("seedRed", rand());
    config->setProperty("seedGreen", rand());
    config->setProperty("seedBlue", rand());
    config->setProperty("grayscale", false);
    return config;
}

References KisBaseProcessor::factoryConfiguration().

◆ id()

static KoID KisFilterNoise::id ( )

inlinestatic

Definition at line 37 of file noisefilter.h.

                            {
        return KoID("noise", i18n("Random Noise"));
    }

◆ processImpl()

void KisFilterNoise::processImpl	(	KisPaintDeviceSP	device,
		const QRect &	applyRect,
		const KisFilterConfigurationSP	config,
		KoUpdater *	progressUpdater ) const

overridevirtual

Override this function with the implementation of your filter.

This is a low level function that expects all the conditions for the

Parameters

device	be met. Use usual process() methods instead.
device	the paint device to filter
applyRect	the rectangle where the filter is applied
config	the parameters of the filter
progressUpdater	to pass on the progress the filter is making

Implements KisFilter.

Definition at line 67 of file noisefilter.cpp.

{
    Q_UNUSED(progressUpdater);
    Q_ASSERT(!device.isNull());
 
    QVariant value;
    const int level = (config && config->getProperty("level", value)) ? value.toInt() : 50;
    const int opacity = (config && config->getProperty("opacity", value)) ? value.toInt() : 100;
    const bool isGrayscale = (config && config->getProperty("grayscale", value)) ? value.toBool() : false;
 
    const double threshold = (100.0 - level) * 0.01;
    const KoColorSpace* colorSpace = device->colorSpace();
    const quint32 pixelSize = colorSpace->pixelSize();
    const KoMixColorsOp* mixOp = colorSpace->mixColorsOp();
 
    std::vector<quint8> scratchPixel(pixelSize);
 
    constexpr quint32 numMixPixels = 2;
    qint16 weights[numMixPixels];
    weights[0] = (255 * opacity) / 100;
    weights[1] = 255 - weights[0];
 
    const quint8* pixels[numMixPixels];
    pixels[0] = scratchPixel.data();
 
    int seedThreshold = rand();
    int seedRed = rand();
    int seedGreen = rand();
    int seedBlue = rand();
 
    if (config) {
        seedThreshold = config->getInt("seedThreshold", seedThreshold);
        seedRed = config->getInt("seedRed", seedRed);
        seedGreen = config->getInt("seedGreen", seedGreen);
        seedBlue = config->getInt("seedBlue", seedBlue);
    }
 
    KisRandomGenerator2D randt(seedThreshold);
    KisRandomGenerator2D randr(seedRed);
    KisRandomGenerator2D randg(seedGreen);
    KisRandomGenerator2D randb(seedBlue);
 
    KisRandomAccessorSP dstIt = device->createRandomAccessorNG();
 
    qint32 dstY_ = rect.y();
    qint32 rowsRemaining = rect.height();
 
    while (rowsRemaining > 0) {
        qint32 dstX_ = rect.x();
        qint32 columnsRemaining = rect.width();
        qint32 numContiguousDstRows = dstIt->numContiguousRows(dstY_);
        qint32 rows = qMin(numContiguousDstRows, rowsRemaining);
 
        while (columnsRemaining > 0) {
            qint32 numContiguousDstColumns = dstIt->numContiguousColumns(dstX_);
            qint32 columns = qMin(numContiguousDstColumns, columnsRemaining);
 
            qint32 dstRowStride = dstIt->rowStride(dstX_, dstY_);
            dstIt->moveTo(dstX_, dstY_);
 
            for (int rowIndex = 0; rowIndex < rows; ++rowIndex) {
                for (int colIndex = 0; colIndex < columns; ++colIndex) {
                    const int px = dstX_ + colIndex;
                    const int py = dstY_ + rowIndex;
                    if (randt.doubleRandomAt(px, py) > threshold) {
                        QColor color;
                        if (isGrayscale) {
                            const int gray = static_cast<int>(randr.doubleRandomAt(px, py) * 255);
                            color = qRgb(gray, gray, gray);
                        } else {
                            color = qRgb(static_cast<int>(randr.doubleRandomAt(px, py) * 255),
                                         static_cast<int>(randg.doubleRandomAt(px, py) * 255),
                                         static_cast<int>(randb.doubleRandomAt(px, py) * 255));
                        }
                        const quint32 dataOffset = colIndex * pixelSize + rowIndex * dstRowStride;
                        if (opacity == 100) {
                            colorSpace->fromQColor(color, dstIt->rawData() + dataOffset);
                        } else {
                            colorSpace->fromQColor(color, scratchPixel.data());
                            pixels[1] = dstIt->oldRawData() + dataOffset;
                            mixOp->mixColors(pixels, weights, numMixPixels, dstIt->rawData() + dataOffset);
                        }
                    }
                }
            }
 
            dstX_ += columns;
            columnsRemaining -= columns;
        }
 
        dstY_ += rows;
        rowsRemaining -= rows;
    }
}

References KisPaintDevice::colorSpace(), KisPaintDevice::createRandomAccessorNG(), KisRandomGenerator2D::doubleRandomAt(), KoColorSpace::fromQColor(), KisSharedPtr< T >::isNull(), KoMixColorsOp::mixColors(), KoColorSpace::mixColorsOp, KisRandomConstAccessorNG::moveTo(), KisRandomConstAccessorNG::numContiguousColumns(), KisRandomConstAccessorNG::numContiguousRows(), KisBaseConstAccessor::oldRawData(), KoColorSpace::pixelSize(), KisBaseAccessor::rawData(), KisRandomConstAccessorNG::rowStride(), and value().

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

plugins/filters/noisefilter/noisefilter.h
plugins/filters/noisefilter/noisefilter.cpp

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ KisFilterNoise()

Member Function Documentation

◆ createConfigurationWidget()

◆ defaultConfiguration()

◆ id()

◆ processImpl()