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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 _REGION_MODEL_H_
#define _REGION_MODEL_H_
#include "IntervalModel.h"
#include "base/RealTime.h"
/**
* RegionModel -- a concrete IntervalModel for intervals associated
* with a value, which we call regions for no very compelling reason.
*/
/**
* Region "point" type. A region is something that has an onset time,
* a single value, and a duration. Like other points, it can also
* have a label.
*
* This is called RegionRec instead of Region to avoid name collisions
* with the X11 Region struct. Bah.
*/
struct RegionRec
{
public:
RegionRec() : frame(0), value(0.f), duration(0) { }
RegionRec(sv_frame_t _frame) : frame(_frame), value(0.0f), duration(0) { }
RegionRec(sv_frame_t _frame, float _value, sv_frame_t _duration, QString _label) :
frame(_frame), value(_value), duration(_duration), label(_label) { }
int getDimensions() const { return 3; }
sv_frame_t frame;
float value;
sv_frame_t duration;
QString label;
QString getLabel() const { return label; }
void toXml(QTextStream &stream,
QString indent = "",
QString extraAttributes = "") const
{
stream <<
QString("%1<point frame=\"%2\" value=\"%3\" duration=\"%4\" label=\"%5\" %6/>\n")
.arg(indent).arg(frame).arg(value).arg(duration)
.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);
list << RealTime::frame2RealTime(duration, sampleRate).toString().c_str();
if (label != "") list << label;
return list.join(delimiter);
}
struct Comparator {
bool operator()(const RegionRec &p1,
const RegionRec &p2) const {
if (p1.frame != p2.frame) return p1.frame < p2.frame;
if (p1.value != p2.value) return p1.value < p2.value;
if (p1.duration != p2.duration) return p1.duration < p2.duration;
return p1.label < p2.label;
}
};
struct OrderComparator {
bool operator()(const RegionRec &p1,
const RegionRec &p2) const {
return p1.frame < p2.frame;
}
};
};
class RegionModel : public IntervalModel<RegionRec>
{
Q_OBJECT
public:
RegionModel(sv_samplerate_t sampleRate, int resolution,
bool notifyOnAdd = true) :
IntervalModel<RegionRec>(sampleRate, resolution, notifyOnAdd),
m_valueQuantization(0),
m_haveDistinctValues(false)
{
}
RegionModel(sv_samplerate_t sampleRate, int resolution,
float valueMinimum, float valueMaximum,
bool notifyOnAdd = true) :
IntervalModel<RegionRec>(sampleRate, resolution,
valueMinimum, valueMaximum,
notifyOnAdd),
m_valueQuantization(0),
m_haveDistinctValues(false)
{
}
virtual ~RegionModel()
{
}
float getValueQuantization() const { return m_valueQuantization; }
void setValueQuantization(float q) { m_valueQuantization = q; }
bool haveDistinctValues() const { return m_haveDistinctValues; }
QString getTypeName() const { return tr("Region"); }
virtual void toXml(QTextStream &out,
QString indent = "",
QString extraAttributes = "") const
{
std::cerr << "RegionModel::toXml: extraAttributes = \""
<< extraAttributes.toStdString() << std::endl;
IntervalModel<RegionRec>::toXml
(out,
indent,
QString("%1 subtype=\"region\" valueQuantization=\"%2\"")
.arg(extraAttributes).arg(m_valueQuantization));
}
/**
* TabularModel methods.
*/
virtual int getColumnCount() const
{
return 5;
}
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("Duration");
case 4: return tr("Label");
default: return tr("Unknown");
}
}
virtual QVariant getData(int row, int column, int role) const
{
if (column < 4) {
return IntervalModel<RegionRec>::getData(row, column, role);
}
PointListConstIterator i = getPointListIteratorForRow(row);
if (i == m_points.end()) return QVariant();
switch (column) {
case 4: return i->label;
default: return QVariant();
}
}
virtual Command *getSetDataCommand(int row, int column, const QVariant &value, int role)
{
if (column < 4) {
return IntervalModel<RegionRec>::getSetDataCommand
(row, column, value, role);
}
if (role != Qt::EditRole) return 0;
PointListIterator 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 4: point.label = value.toString(); break;
}
command->addPoint(point);
return command->finish();
}
virtual SortType getSortType(int column) const
{
if (column == 4) return SortAlphabetical;
return SortNumeric;
}
virtual void addPoint(const Point &point)
{
if (point.value != 0.f) m_haveDistinctValues = true;
IntervalModel<RegionRec>::addPoint(point);
}
protected:
float m_valueQuantization;
bool m_haveDistinctValues;
};
#endif
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