view layer/LogNumericalScale.h @ 1403:10e768adaee5

Retain consistent min freq (rather than min bin no) when changing fft parameters in spectrum; scale ffts by window size rather than fft size in case of oversampling, to avoid fading out because of scale factor including zero padding

/* -*- 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 2006-2018 Chris Cannam and QMUL.
    
    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 SV_LOG_NUMERICAL_SCALE_H
#define SV_LOG_NUMERICAL_SCALE_H

#include <QRect>

class QPainter;
class LayerGeometryProvider;
class VerticalScaleLayer;

class LogNumericalScale
{
public:
    int getWidth(LayerGeometryProvider *v, QPainter &paint);

    void paintVertical
    (LayerGeometryProvider *v, const VerticalScaleLayer *layer,
     QPainter &paint, int x0, double minlog, double maxlog);
};

#endif