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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
This file copyright 2006 Chris Cannam.
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. See the file
COPYING included with this distribution for more information.
*/
#ifndef _SPARSE_VALUE_MODEL_H_
#define _SPARSE_VALUE_MODEL_H_
#include "SparseModel.h"
#include "base/UnitDatabase.h"
#include "system/System.h"
/**
* Model containing sparse data (points with some properties) of which
* one of the properties is an arbitrary float value. The other
* properties depend on the point type.
*/
template <typename PointType>
class SparseValueModel : public SparseModel<PointType>
{
public:
SparseValueModel(sv_samplerate_t sampleRate, int resolution,
bool notifyOnAdd = true) :
SparseModel<PointType>(sampleRate, resolution, notifyOnAdd),
m_valueMinimum(0.f),
m_valueMaximum(0.f),
m_haveExtents(false)
{ }
SparseValueModel(sv_samplerate_t sampleRate, int resolution,
float valueMinimum, float valueMaximum,
bool notifyOnAdd = true) :
SparseModel<PointType>(sampleRate, resolution, notifyOnAdd),
m_valueMinimum(valueMinimum),
m_valueMaximum(valueMaximum),
m_haveExtents(true)
{ }
using SparseModel<PointType>::m_points;
using SparseModel<PointType>::modelChanged;
using SparseModel<PointType>::getPoints;
using SparseModel<PointType>::tr;
QString getTypeName() const { return tr("Sparse Value"); }
virtual float getValueMinimum() const { return m_valueMinimum; }
virtual float getValueMaximum() const { return m_valueMaximum; }
virtual QString getScaleUnits() const { return m_units; }
virtual void setScaleUnits(QString units) {
m_units = units;
UnitDatabase::getInstance()->registerUnit(units);
}
virtual void addPoint(const PointType &point)
{
bool allChange = false;
if (!ISNAN(point.value) && !ISINF(point.value)) {
if (!m_haveExtents || point.value < m_valueMinimum) {
m_valueMinimum = point.value; allChange = true;
// std::cerr << "addPoint: value min = " << m_valueMinimum << std::endl;
}
if (!m_haveExtents || point.value > m_valueMaximum) {
m_valueMaximum = point.value; allChange = true;
// std::cerr << "addPoint: value max = " << m_valueMaximum << " (min = " << m_valueMinimum << ")" << std::endl;
}
m_haveExtents = true;
}
SparseModel<PointType>::addPoint(point);
if (allChange) emit modelChanged();
}
virtual void deletePoint(const PointType &point)
{
SparseModel<PointType>::deletePoint(point);
if (point.value == m_valueMinimum ||
point.value == m_valueMaximum) {
float formerMin = m_valueMinimum, formerMax = m_valueMaximum;
for (typename SparseModel<PointType>::PointList::const_iterator i
= m_points.begin();
i != m_points.end(); ++i) {
if (i == m_points.begin() || i->value < m_valueMinimum) {
m_valueMinimum = i->value;
// std::cerr << "deletePoint: value min = " << m_valueMinimum << std::endl;
}
if (i == m_points.begin() || i->value > m_valueMaximum) {
m_valueMaximum = i->value;
// std::cerr << "deletePoint: value max = " << m_valueMaximum << std::endl;
}
}
if (formerMin != m_valueMinimum || formerMax != m_valueMaximum) {
emit modelChanged();
}
}
}
virtual void toXml(QTextStream &stream,
QString indent = "",
QString extraAttributes = "") const
{
std::cerr << "SparseValueModel::toXml: extraAttributes = \""
<< extraAttributes.toStdString() << std::endl;
SparseModel<PointType>::toXml
(stream,
indent,
QString("%1 minimum=\"%2\" maximum=\"%3\" units=\"%4\"")
.arg(extraAttributes).arg(m_valueMinimum).arg(m_valueMaximum)
.arg(this->encodeEntities(m_units)));
}
protected:
float m_valueMinimum;
float m_valueMaximum;
bool m_haveExtents;
QString m_units;
};
#endif
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