annotate base/UnitDatabase.h @ 188:f86b74d1b143

* Simplify maker names in plugin menu
* Make sure derived models have a name (based on the transform)
* Don't start deriving a model from a derived model until the derived model is
  ready
* Tidy up completion management in writable wave file model
* Make writable models save/reload correctly from session file (i.e.
  regenerating from the original transform)
* Same for dense 3d models -- don't save the data, just the transform details
* Add a comment describing the SV file format

/* -*- 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 _UNIT_DATABASE_H_
#define _UNIT_DATABASE_H_

#include <QObject>
#include <QString>
#include <QStringList>
#include <map>

// This grandly named class is just a list of the names of known scale
// units for the various models, for use as the set of fixed values in
// unit dropdown menus etc.  Of course, the user should be allowed to
// enter their own as well.

class UnitDatabase : public QObject
{
    Q_OBJECT

public:
    static UnitDatabase *getInstance();

    QStringList getKnownUnits() const;
    void registerUnit(QString unit);
    
    int getUnitId(QString unit);
    QString getUnitById(int id);

signals:
    void unitDatabaseChanged();

protected:
    UnitDatabase();

    typedef std::map<QString, int> UnitMap;
    UnitMap m_units;
    int m_nextId;

    static UnitDatabase m_instance;
};

#endif