lbajardsilogic@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
lbajardsilogic@0: 
lbajardsilogic@0: /*
lbajardsilogic@0:     Sonic Visualiser
lbajardsilogic@0:     An audio file viewer and annotation editor.
lbajardsilogic@0:     Centre for Digital Music, Queen Mary, University of London.
lbajardsilogic@0:     This file copyright 2006 QMUL.
lbajardsilogic@0:     
lbajardsilogic@0:     This program is free software; you can redistribute it and/or
lbajardsilogic@0:     modify it under the terms of the GNU General Public License as
lbajardsilogic@0:     published by the Free Software Foundation; either version 2 of the
lbajardsilogic@0:     License, or (at your option) any later version.  See the file
lbajardsilogic@0:     COPYING included with this distribution for more information.
lbajardsilogic@0: */
lbajardsilogic@0: 
lbajardsilogic@0: #ifndef _RANGE_MAPPER_H_
lbajardsilogic@0: #define _RANGE_MAPPER_H_
lbajardsilogic@0: 
lbajardsilogic@0: #include <QString>
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: class RangeMapper 
lbajardsilogic@0: {
lbajardsilogic@0: public:
lbajardsilogic@0:     virtual ~RangeMapper() { }
lbajardsilogic@0:     virtual int getPositionForValue(float value) const = 0;
lbajardsilogic@0:     virtual float getValueForPosition(int position) const = 0;
lbajardsilogic@0:     virtual QString getUnit() const { return ""; }
lbajardsilogic@0: };
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: class LinearRangeMapper : public RangeMapper
lbajardsilogic@0: {
lbajardsilogic@0: public:
lbajardsilogic@0:     LinearRangeMapper(int minpos, int maxpos,
lbajardsilogic@0:                       float minval, float maxval,
lbajardsilogic@0:                       QString unit = "");
lbajardsilogic@0:     
lbajardsilogic@0:     virtual int getPositionForValue(float value) const;
lbajardsilogic@0:     virtual float getValueForPosition(int position) const;
lbajardsilogic@0: 
lbajardsilogic@0:     virtual QString getUnit() const { return m_unit; }
lbajardsilogic@0: 
lbajardsilogic@0: protected:
lbajardsilogic@0:     int m_minpos;
lbajardsilogic@0:     int m_maxpos;
lbajardsilogic@0:     float m_minval;
lbajardsilogic@0:     float m_maxval;
lbajardsilogic@0:     QString m_unit;
lbajardsilogic@0: };
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: class LogRangeMapper : public RangeMapper
lbajardsilogic@0: {
lbajardsilogic@0: public:
lbajardsilogic@0:     LogRangeMapper(int minpos, int maxpos,
lbajardsilogic@0:                    float ratio, float minlog,
lbajardsilogic@0:                    QString m_unit = "");
lbajardsilogic@0: 
lbajardsilogic@0:     virtual int getPositionForValue(float value) const;
lbajardsilogic@0:     virtual float getValueForPosition(int position) const;
lbajardsilogic@0: 
lbajardsilogic@0:     virtual QString getUnit() const { return m_unit; }
lbajardsilogic@0: 
lbajardsilogic@0: protected:
lbajardsilogic@0:     int m_minpos;
lbajardsilogic@0:     int m_maxpos;
lbajardsilogic@0:     float m_ratio;
lbajardsilogic@0:     float m_minlog;
lbajardsilogic@0:     float m_maxlog;
lbajardsilogic@0:     QString m_unit;
lbajardsilogic@0: };
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: #endif