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/*
* SPDX-FileCopyrightText: 2016 Dmitry Kazakov <dimula73@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __KIS_STABILIZED_EVENTS_SAMPLER_H
#define __KIS_STABILIZED_EVENTS_SAMPLER_H
#include <QScopedPointer>
#include <boost/iterator/iterator_facade.hpp>
#include "kritaui_export.h"
class KisPaintInformation;
#include <kis_paint_information.h>
class KRITAUI_EXPORT KisStabilizedEventsSampler
{
public:
KisStabilizedEventsSampler(int sampleTime = 1);
~KisStabilizedEventsSampler();
void clear();
void addEvent(const KisPaintInformation &pi);
void addFinishingEvent(int numSamples);
public:
class KRITAUI_EXPORT iterator :
public boost::iterator_facade <iterator,
KisPaintInformation const,
boost::forward_traversal_tag >
{
public:
iterator()
: m_sampler(0),
m_index(0),
m_alpha(0) {}
iterator(const KisStabilizedEventsSampler* sampler, int index, qreal alpha)
: m_sampler(sampler),
m_index(index),
m_alpha(alpha) {}
private:
friend class boost::iterator_core_access;
void increment() {
m_index++;
}
bool equal(iterator const& other) const {
return m_index == other.m_index &&
m_sampler == other.m_sampler;
}
const KisPaintInformation& dereference() const;
private:
const KisStabilizedEventsSampler* m_sampler;
int m_index;
qreal m_alpha;
};
std::pair<iterator, iterator> range() const;
private:
struct Private;
const QScopedPointer<Private> m_d;
};
#endif /* __KIS_STABILIZED_EVENTS_SAMPLER_H */
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