#include <kis_filter_strategy.h>

Inheritance diagram for KisFilterStrategyRegistry:

Public Member Functions
KisFilterStrategy *	autoFilterStrategy (QSize originalSize, QSize desiredSize) const

QString	formattedDescriptions () const

	KisFilterStrategyRegistry ()

QList< KoID >	listKeys () const

	~KisFilterStrategyRegistry () override

Public Member Functions inherited from KoGenericRegistry< KisFilterStrategy * >
void	add (const QString &id, KisFilterStrategy * item)

void	add (KisFilterStrategy * item)

void	addAlias (const QString &alias, const QString &id)

QHash< QString, KisFilterStrategy * >::const_iterator	constBegin () const

QHash< QString, KisFilterStrategy * >::const_iterator	constEnd () const

bool	contains (const QString &id) const

int	count () const

QList< KisFilterStrategy * >	doubleEntries () const

KisFilterStrategy *	get (const QString &id) const

QList< QString >	keys () const

	KoGenericRegistry ()

void	remove (const QString &id)

void	removeAlias (const QString &alias)

const KisFilterStrategy *	value (const QString &id) const

QList< KisFilterStrategy * >	values () const

virtual	~KoGenericRegistry ()

Static Public Member Functions
static KisFilterStrategyRegistry *	instance ()

Private Member Functions
	KisFilterStrategyRegistry (const KisFilterStrategyRegistry &)

KisFilterStrategyRegistry	operator= (const KisFilterStrategyRegistry &)

Detailed Description

Definition at line 171 of file kis_filter_strategy.h.

Constructor & Destructor Documentation

◆ KisFilterStrategyRegistry() [1/2]

KisFilterStrategyRegistry::KisFilterStrategyRegistry ( )

Definition at line 191 of file kis_filter_strategy.cc.

192{

193}

◆ ~KisFilterStrategyRegistry()

KisFilterStrategyRegistry::~KisFilterStrategyRegistry ( )

override

Definition at line 195 of file kis_filter_strategy.cc.

{
    Q_FOREACH (const QString &id, keys()) {
        delete get(id);
    }
    dbgRegistry << "deleting KisFilterStrategyRegistry";
}

References dbgRegistry, KoGenericRegistry< KisFilterStrategy * >::get(), and KoGenericRegistry< KisFilterStrategy * >::keys().

◆ KisFilterStrategyRegistry() [2/2]

KisFilterStrategyRegistry::KisFilterStrategyRegistry ( const KisFilterStrategyRegistry & )

private

Member Function Documentation

◆ autoFilterStrategy()

KisFilterStrategy * KisFilterStrategyRegistry::autoFilterStrategy	(	QSize	originalSize,
		QSize	desiredSize ) const

Try to select an appropriate image filtering strategy based on original and desired parameters.

Definition at line 251 of file kis_filter_strategy.cc.

{
    // Default to nearest neighbor scaling for tiny source images. (i.e: icons or small sprite sheets.)
    const int pixelArtThreshold = 256;
    if (originalSize.width() <= pixelArtThreshold ||
        originalSize.height() <= pixelArtThreshold) {
        return KisFilterStrategyRegistry::instance()->value("NearestNeighbor");
    }
 
    const float xScaleFactor = (float)desiredSize.width() / originalSize.width();
    const float yScaleFactor = (float)desiredSize.height() / originalSize.height();
 
    if (xScaleFactor > 1.f || yScaleFactor > 1.f) { // Enlargement.
        return KisFilterStrategyRegistry::instance()->value("Bicubic");
    } else if (xScaleFactor < 1.f || yScaleFactor < 1.f) { // Reduction.
        return KisFilterStrategyRegistry::instance()->value("Bicubic");
    }
 
    return KisFilterStrategyRegistry::instance()->value("NearestNeighbor");
}

References instance(), and KoGenericRegistry< T >::value().

◆ formattedDescriptions()

QString KisFilterStrategyRegistry::formattedDescriptions ( ) const

This function return a string formatted in HTML that contains the descriptions of all objects (with a non empty description) stored in the registry.

Definition at line 230 of file kis_filter_strategy.cc.

{
    QString formatedDescription("<html><head/><body>");
 
    Q_FOREACH (const QString key, keys()) {
        KisFilterStrategy *strategy = get(key);
        QString description = strategy->description();
 
        if (!description.isEmpty()) {
            formatedDescription.append("<p><span style=\"font-weight:600;\">");
            formatedDescription.append(strategy->name());
            formatedDescription.append("</span>: ");
            formatedDescription.append(description);
            formatedDescription.append("</p>");
        }
    }
    formatedDescription.append("</body></html>");
 
    return formatedDescription;
}

References KisFilterStrategy::description(), KoGenericRegistry< KisFilterStrategy * >::get(), KoGenericRegistry< KisFilterStrategy * >::keys(), and KisFilterStrategy::name().

◆ instance()

KisFilterStrategyRegistry * KisFilterStrategyRegistry::instance ( )

static

Definition at line 203 of file kis_filter_strategy.cc.

{
    if (!s_instance.exists()) {
        s_instance->add(new KisBoxFilterStrategy);
        s_instance->addAlias("Box", "NearestNeighbor");
 
        s_instance->add(new KisHermiteFilterStrategy);
        s_instance->add(new KisBicubicFilterStrategy);
        s_instance->add(new KisBilinearFilterStrategy);
        s_instance->add(new KisBellFilterStrategy);
        s_instance->add(new KisBSplineFilterStrategy);
        s_instance->add(new KisLanczos3FilterStrategy);
        s_instance->add(new KisMitchellFilterStrategy);
    }
    return s_instance;
}

References KoGenericRegistry< T >::add().

◆ listKeys()

QList< KoID > KisFilterStrategyRegistry::listKeys ( ) const

This function return a list of all the keys in KoID format by using the name() method on the objects stored in the registry.

Definition at line 220 of file kis_filter_strategy.cc.

{
    QList<KoID> answer;
    Q_FOREACH (const QString key, keys()) {
        answer.append(KoID(key, get(key)->name()));
    }
 
    return answer;
}

References KoGenericRegistry< KisFilterStrategy * >::get(), and KoGenericRegistry< KisFilterStrategy * >::keys().

◆ operator=()

KisFilterStrategyRegistry KisFilterStrategyRegistry::operator= ( const KisFilterStrategyRegistry & )