KoHistogramProducer.cpp

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/*
 *  SPDX-FileCopyrightText: 2005 Bart Coppens <kde@bartcoppens.be>
 *
 *  SPDX-License-Identifier: LGPL-2.1-or-later
 */
 
#include "KoHistogramProducer.h"
 
#include <QList>
#include <QGlobalStatic>
 
#include <KoID.h>
 
#include "KoBasicHistogramProducers.h"
 
#include "KoColorSpace.h"
 
Q_GLOBAL_STATIC(KoHistogramProducerFactoryRegistry, s_instance)
 
KoHistogramProducerFactoryRegistry::KoHistogramProducerFactoryRegistry()
{
}
 
KoHistogramProducerFactoryRegistry::~KoHistogramProducerFactoryRegistry()
{
    qDeleteAll(values());
}
 
KoHistogramProducerFactoryRegistry* KoHistogramProducerFactoryRegistry::instance()
{
    return s_instance;
 
}
 
QList<QString> KoHistogramProducerFactoryRegistry::keysCompatibleWith(const KoColorSpace* colorSpace, bool isStrict) const
{
    QList<QString> list;
    QList<float> preferredList;
    Q_FOREACH (const QString &id, keys()) {
        KoHistogramProducerFactory *f = value(id);
 
        if (f->isCompatibleWith(colorSpace, isStrict)) {
            float preferred = f->preferrednessLevelWith(colorSpace);
            QList<float>::iterator pit = preferredList.begin();
            QList<float>::iterator pend = preferredList.end();
            QList<QString>::iterator lit = list.begin();
 
            while (pit != pend && preferred <= *pit) {
                ++pit;
                ++lit;
            }
 
            list.insert(lit, id);
            preferredList.insert(pit, preferred);
        }
    }
    return list;
}