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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_TIME_VALUE_MODEL_H_
#define _SPARSE_TIME_VALUE_MODEL_H_
#include "SparseValueModel.h"
#include "base/PlayParameterRepository.h"
#include "base/RealTime.h"
/**
* Time/value point type for use in a SparseModel or SparseValueModel.
* With this point type, the model basically represents a wiggly-line
* plot with points at arbitrary intervals of the model resolution.
*/
struct TimeValuePoint
{
public:
TimeValuePoint(sv_frame_t _frame) : frame(_frame), value(0.0f) { }
TimeValuePoint(sv_frame_t _frame, float _value, QString _label) :
frame(_frame), value(_value), label(_label) { }
int getDimensions() const { return 2; }
sv_frame_t frame;
float value;
QString label;
QString getLabel() const { return label; }
void toXml(QTextStream &stream, QString indent = "",
QString extraAttributes = "") const
{
stream << QString("%1<point frame=\"%2\" value=\"%3\" label=\"%4\" %5/>\n")
.arg(indent).arg(frame).arg(value).arg(XmlExportable::encodeEntities(label))
.arg(extraAttributes);
}
QString toDelimitedDataString(QString delimiter, DataExportOptions, sv_samplerate_t sampleRate) const
{
QStringList list;
list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str();
list << QString("%1").arg(value);
if (label != "") list << label;
return list.join(delimiter);
}
struct Comparator {
bool operator()(const TimeValuePoint &p1,
const TimeValuePoint &p2) const {
if (p1.frame != p2.frame) return p1.frame < p2.frame;
if (p1.value != p2.value) return p1.value < p2.value;
return p1.label < p2.label;
}
};
struct OrderComparator {
bool operator()(const TimeValuePoint &p1,
const TimeValuePoint &p2) const {
return p1.frame < p2.frame;
}
};
};
class SparseTimeValueModel : public SparseValueModel<TimeValuePoint>
{
Q_OBJECT
public:
SparseTimeValueModel(sv_samplerate_t sampleRate, int resolution,
bool notifyOnAdd = true) :
SparseValueModel<TimeValuePoint>(sampleRate, resolution,
notifyOnAdd)
{
// Model is playable, but may not sound (if units not Hz or
// range unsuitable)
PlayParameterRepository::getInstance()->addPlayable(this);
}
SparseTimeValueModel(sv_samplerate_t sampleRate, int resolution,
float valueMinimum, float valueMaximum,
bool notifyOnAdd = true) :
SparseValueModel<TimeValuePoint>(sampleRate, resolution,
valueMinimum, valueMaximum,
notifyOnAdd)
{
// Model is playable, but may not sound (if units not Hz or
// range unsuitable)
PlayParameterRepository::getInstance()->addPlayable(this);
}
virtual ~SparseTimeValueModel()
{
PlayParameterRepository::getInstance()->removePlayable(this);
}
QString getTypeName() const { return tr("Sparse Time-Value"); }
virtual bool canPlay() const { return true; }
virtual bool getDefaultPlayAudible() const { return false; } // user must unmute
/**
* TabularModel methods.
*/
virtual int getColumnCount() const
{
return 4;
}
virtual QString getHeading(int column) const
{
switch (column) {
case 0: return tr("Time");
case 1: return tr("Frame");
case 2: return tr("Value");
case 3: return tr("Label");
default: return tr("Unknown");
}
}
virtual QVariant getData(int row, int column, int role) const
{
if (column < 2) {
return SparseValueModel<TimeValuePoint>::getData
(row, column, role);
}
PointListConstIterator i = getPointListIteratorForRow(row);
if (i == m_points.end()) return QVariant();
switch (column) {
case 2:
if (role == Qt::EditRole || role == SortRole) return i->value;
else return QString("%1 %2").arg(i->value).arg(getScaleUnits());
case 3: return i->label;
default: return QVariant();
}
}
virtual Command *getSetDataCommand(int row, int column, const QVariant &value, int role)
{
if (column < 2) {
return SparseValueModel<TimeValuePoint>::getSetDataCommand
(row, column, value, role);
}
if (role != Qt::EditRole) return 0;
PointListConstIterator i = getPointListIteratorForRow(row);
if (i == m_points.end()) return 0;
EditCommand *command = new EditCommand(this, tr("Edit Data"));
Point point(*i);
command->deletePoint(point);
switch (column) {
case 2: point.value = float(value.toDouble()); break;
case 3: point.label = value.toString(); break;
}
command->addPoint(point);
return command->finish();
}
virtual bool isColumnTimeValue(int column) const
{
return (column < 2);
}
virtual SortType getSortType(int column) const
{
if (column == 3) return SortAlphabetical;
return SortNumeric;
}
};
#endif
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