EqFader.h

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/* eqfader.h - defination of EqFader class.
*
* Copyright (c) 2014 David French <dave/dot/french3/at/googlemail/dot/com>
*
* This file is part of LMMS - https://lmms.io
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
*/
 
#ifndef EQFADER_H
#define EQFADER_H
#include <QList>
#include <QWidget>
 
#include "EffectControls.h"
#include "Fader.h"
#include "GuiApplication.h"
#include "MainWindow.h"
#include "TextFloat.h"
 
namespace lmms::gui
{
 
 
class EqFader : public Fader
{
 
public:
        Q_OBJECT
public:
        EqFader( FloatModel * model, const QString & name, QWidget * parent,  float* lPeak, float* rPeak ) :
                Fader(model, name, parent, false)
        {
                setMinimumSize( 23, 116 );
                setMaximumSize( 23, 116 );
                resize( 23, 116 );
                m_lPeak = lPeak;
                m_rPeak = rPeak;
                connect( getGUI()->mainWindow(), SIGNAL( periodicUpdate() ), this, SLOT( updateVuMeters() ) );
                m_model = model;
                setPeak_L( 0 );
                setPeak_R( 0 );
        }
 
 
 
        ~EqFader() override = default;
 
 
private slots:
 
        void updateVuMeters()
        {
                const float opl = getPeak_L();
                const float opr = getPeak_R();
                const float fallOff = 1.07f;
                if( *m_lPeak > opl )
                {
                        setPeak_L( *m_lPeak );
                        *m_lPeak = 0;
                }
                else
                {
                        setPeak_L( opl/fallOff );
                }
 
                if( *m_rPeak > opr )
                {
                        setPeak_R( *m_rPeak );
                        *m_rPeak = 0;
                }
                else
                {
                        setPeak_R( opr/fallOff );
                }
                update();
        }
 
 
 
 
private:
        float* m_lPeak;
        float* m_rPeak;
        FloatModel* m_model;
 
};
 
 
} // namespace lmms::gui
 
#endif // EQFADER_H