annotate widgets/LevelPanToolButton.h @ 1386:fc3d89f88690 spectrogramparam

Use log-frequency rather than log-bin for calculating x coord in spectrum. This has the advantage that frequency positions don't move when we change the window size or oversampling ratio, but it does give us an unhelpfully large amount of space for very low frequencies - to be considered

/* -*- 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 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 LEVEL_PAN_TOOLBUTTON_H
#define LEVEL_PAN_TOOLBUTTON_H

#include <QToolButton>

class LevelPanWidget;

class LevelPanToolButton : public QToolButton
{
    Q_OBJECT

public:
    LevelPanToolButton(QWidget *parent = 0);
    ~LevelPanToolButton();
    
    /// Return level as a gain value in the range [0,1]
    float getLevel() const; 
    
    /// Return pan as a value in the range [-1,1]
    float getPan() const;

    /// Discover whether the level range includes muting or not
    bool includesMute() const;

    void setImageSize(int pixels);
                        
    void setBigImageSize(int pixels);
                        
public slots:
    /// Set level in the range [0,1] -- will be rounded
    void setLevel(float);

    /// Set pan in the range [-1,1] -- will be rounded
    void setPan(float);

    /// Set left and right peak monitoring levels in the range [0,1]
    void setMonitoringLevels(float, float);
    
    /// Specify whether the level range should include muting or not
    void setIncludeMute(bool);

    void setEnabled(bool enabled);
    
signals:
    void levelChanged(float);
    void panChanged(float);

    void mouseEntered();
    void mouseLeft();

private slots:
    void selfLevelChanged(float);
    void selfClicked();
    
protected:
    virtual void paintEvent(QPaintEvent *);
    virtual void enterEvent(QEvent *);
    virtual void leaveEvent(QEvent *);
    virtual void mousePressEvent(QMouseEvent *);
    virtual void wheelEvent(QWheelEvent *e);
    
    LevelPanWidget *m_lpw;
    int m_pixels;
    int m_pixelsBig;
    bool m_muted;
    float m_savedLevel;
};

#endif