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 /*
  *  Copyright (c) 2005 Bart Coppens <kde@bartcoppens.be>
  *
  *  This library is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU Lesser General Public License as published by
  *  the Free Software Foundation; either version 2.1 of the License, or
  *  (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU Lesser General Public License for more details.
  *
  *  You should have received a copy of the GNU Lesser General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #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) const
 {
     QList<QString> list;
     QList<float> preferredList;
     foreach(const QString &id, keys()) {
         KoHistogramProducerFactory *f = value(id);
         if (f->isCompatibleWith(colorSpace)) {
             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;
 }