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/*
* This file is part of Chalk
*
* Copyright (c) 2005 Bart Coppens <kde@bartcoppens.be>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU 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.
*/
#ifndef _KIS_ACCUMULATING_PRODUCER_H_
#define _KIS_ACCUMULATING_PRODUCER_H_
#include <tqobject.h>
#include <kis_basic_histogram_producers.h>
#include "kis_cachedhistogram.h"
/**
* Kept very minimalistic because all options would require much reiterating which we don't want.
* This class is multithreading! Don't expect it to contain the right data after an
* addRegionsToBinAsync call, but await it's completed() signal. Also beware! This function
* _does_ clear() before addRegionsToBinAsync! (hence not conforming to the regular semantics
* of HistogramProducers if you'd take addRegionsToBinAsync = addRegionToBin, but since that is
* already violated with the asynchronousity of it that is not really an issue anymore, I think)
**/
class KisAccumulatingHistogramProducer : public TQObject, public KisBasicHistogramProducer {
Q_OBJECT
TQ_OBJECT
public:
KisAccumulatingHistogramProducer(KisCachedHistogramObserver::Producers* source);
~KisAccumulatingHistogramProducer();
/// Does _nothing_, use addRegionsToBinAsync
virtual void addRegionToBin(TQ_UINT8 *, TQ_UINT8*, TQ_UINT32, KisColorSpace *) {}
virtual void addRegionsToBinAsync();
virtual TQString positionToString(double pos) const
{ return m_source->at(0)->positionToString(pos); }
virtual void setView(double, double) {} // No view support
virtual double maximalZoom() const { return 1.0; }
virtual TQ_INT32 numberOfBins() { return m_source->at(0)->numberOfBins(); }
virtual TQValueVector<KisChannelInfo *> channels() { return m_source->at(0)->channels(); }
/// Call this when the 'source' list has changed colorspace
virtual void changedSourceProducer() {
m_count = m_source->at(0)->channels().count();
m_external.clear();
makeExternalToInternal();
}
signals:
void completed();
protected:
virtual void customEvent(TQCustomEvent* e);
/// source already converts external to internal
virtual int externalToInternal(int ext) { return ext; }
KisCachedHistogramObserver::Producers* m_source;
class ThreadedProducer;
friend class ThreadedProducer;
ThreadedProducer* m_thread;
};
#endif // _KIS_ACCUMULATING_PRODUCER_H_
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