MixerSettingsDialog.cpp

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/*
 * Hydrogen
 * Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.sourceforge.net]
 * Copyright(c) 2008-2025 The hydrogen development team [hydrogen-devel@lists.sourceforge.net]
 *
 * http://www.hydrogen-music.org
 *
 * 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. If not, see https://www.gnu.org/licenses
 *
 */
 
#include <cstring>
 
#include "MixerSettingsDialog.h"
#include "HydrogenApp.h"
#include "MainForm.h"
 
#include "qmessagebox.h"
#include "qstylefactory.h"
 
#include <QPixmap>
#include <QFontDialog>
 
#include <core/MidiMap.h>
#include <core/Hydrogen.h>
#include <core/Preferences/Preferences.h>
#include <core/Lash/LashClient.h>
#include <core/AudioEngine/AudioEngine.h>
#include <core/Helpers/Translations.h>
#include "SongEditor/SongEditor.h"
#include "SongEditor/SongEditorPanel.h"
 
 
using namespace H2Core;
 
MixerSettingsDialog::MixerSettingsDialog(QWidget* parent)
 : QDialog( parent )
 {
        setupUi( this );
 
        setWindowTitle( tr( "Mixer Settings" ) );
 
        setMinimumSize( width(), height() );
 
        std::shared_ptr<Song> pSong = Hydrogen::get_instance()->getSong();
        
        /* insert the items here so they work consistently no matter of their order in the menu (except the headings)
         */
 
        // heading
        panLawComboBox->addItem( tr("------ Linear pan parameter ------"), QVariant( -10000 ) );
        qobject_cast< QStandardItemModel * >( panLawComboBox->model() )->item( 0 )->setEnabled( false );
        panLawComboBox->addItem( tr("Balance Law (0dB)"), QVariant( Sampler::LINEAR_STRAIGHT_POLYGONAL ) );
        panLawComboBox->addItem( tr("Constant Power (-3dB)"), QVariant( Sampler::LINEAR_CONST_POWER ) );
        panLawComboBox->addItem( tr("Constant Sum (-6dB)"), QVariant( Sampler::LINEAR_CONST_SUM ) );
        panLawComboBox->addItem( tr("Constant k-Norm (Custom dB compensation)"),
                                                                                                                                                QVariant( Sampler::LINEAR_CONST_K_NORM ) );
        panLawComboBox->insertSeparator(100);
        
        // heading      
        panLawComboBox->addItem( tr("------ Polar pan parameter ------"), QVariant( -10000 ) );
        qobject_cast< QStandardItemModel * >( panLawComboBox->model() )->item( 6 )->setEnabled( false );
        panLawComboBox->addItem( tr("Balance Law (0dB)"), QVariant( Sampler::POLAR_STRAIGHT_POLYGONAL ) );
        panLawComboBox->addItem( tr("Constant Power (-3dB)"), QVariant( Sampler::POLAR_CONST_POWER ) );
        panLawComboBox->addItem( tr("Constant Sum (-6dB)"), QVariant( Sampler::POLAR_CONST_SUM ) );
        panLawComboBox->addItem( tr("Constant k-Norm (Custom dB compensation)"),
                                                                                                                                                QVariant( Sampler::POLAR_CONST_K_NORM ) );
        panLawComboBox->insertSeparator(100);
        
        // heading
        panLawComboBox->addItem( tr("------ Ratio pan parameter ------"), QVariant( -10000 ) );
        qobject_cast< QStandardItemModel * >( panLawComboBox->model() )->item( 12 )->setEnabled( false );
        panLawComboBox->addItem( tr("Balance Law (0dB)"), QVariant( Sampler::RATIO_STRAIGHT_POLYGONAL ) );
        panLawComboBox->addItem( tr("Constant Power (-3dB)"), QVariant( Sampler::RATIO_CONST_POWER ) );
        panLawComboBox->addItem( tr("Constant Sum (-6dB)"), QVariant( Sampler::RATIO_CONST_SUM ) );
        panLawComboBox->addItem( tr("Constant k-Norm (Custom dB compensation)"),
                                                                                                                                                QVariant( Sampler::RATIO_CONST_K_NORM ) );
        panLawComboBox->insertSeparator(100);
        
        // heading
        panLawComboBox->addItem( tr("------ Quadratic pan parameter ------"), QVariant( -10000 ) );
        qobject_cast< QStandardItemModel * >( panLawComboBox->model() )->item( 18 )->setEnabled( false );
        panLawComboBox->addItem( tr("Balance Law (0dB)"), QVariant( Sampler::QUADRATIC_STRAIGHT_POLYGONAL ) );
        panLawComboBox->addItem( tr("Constant Power (-3dB)"), QVariant( Sampler::QUADRATIC_CONST_POWER ) );
        panLawComboBox->addItem( tr("Constant Sum (-6dB)"), QVariant( Sampler::QUADRATIC_CONST_SUM ) );
        panLawComboBox->addItem( tr("Constant k-Norm (Custom dB compensation)"),
                                                                                                                                                QVariant( Sampler::QUADRATIC_CONST_K_NORM ) );
 
        panLawComboBox->setCurrentIndex( panLawComboBox->findData( pSong->getPanLawType() ) );
        panLawChanged(); // to hide custom dB SPL compensation
        panLawComboBox->setToolTip( tr("Relationship between the sound's apparent image position and the pan knob control"
                                                                                                                                                                                                                                        ) );
 
        connect(panLawComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT( panLawChanged() ));
        
        QValidator *validator = new QDoubleValidator( -10000., 0., 20, this );
        dBCompensationLineEdit->setValidator( validator );
        dBCompensationLineEdit->setText( QString( "%1" ).arg( -6.0206 / pSong->getPanLawKNorm() ) );
 
        adjustSize();
        setFixedSize( width(), height() );
}
 
 
 
 
MixerSettingsDialog::~MixerSettingsDialog()
{
        INFOLOG("~MIXER_SETTINGS_DIALOG");
}
 
 
 
void MixerSettingsDialog::on_cancelBtn_clicked()
{
        reject();
}
 
 
void MixerSettingsDialog::on_okBtn_clicked() {
        std::shared_ptr<Song> pSong = Hydrogen::get_instance()->getSong();
        bool bOk;
        
        // Pan Law settings
        pSong->setPanLawType( ( panLawComboBox->currentData() ).toInt( &bOk ) );
        
        // allowing both point or comma decimal separator
        float fdBCenterCompensation = ( dBCompensationLineEdit->text() ).replace( ",", "." ).toFloat( &bOk );
        if ( !bOk ) { // this should not happen
                QMessageBox::information( this, "Hydrogen", tr( "dB Center Compensation rejected" ) );
                return;
        } else if ( fdBCenterCompensation > -0.01 ) {
                QMessageBox::information( this, "Hydrogen", tr( "dB Center Compensation must be less than -0.01" ) );
                return;
        }
        pSong->setPanLawKNorm( - 6.0206 / fdBCenterCompensation );
 
        Hydrogen::get_instance()->setIsModified( true );
 
        accept();
}
 
void MixerSettingsDialog::panLawChanged(){ // hide/show some widgets
        bool bOk;
        int nPanLawType = ( panLawComboBox->currentData() ).toInt( &bOk);
        if (   nPanLawType == Sampler::LINEAR_CONST_K_NORM
                || nPanLawType == Sampler::POLAR_CONST_K_NORM
                || nPanLawType == Sampler::RATIO_CONST_K_NORM
                || nPanLawType == Sampler::QUADRATIC_CONST_K_NORM
           )
        {
                dBCompensationLineEdit->show();
                dBCompensationLbl->show();
        } else {
                dBCompensationLineEdit->hide();
                dBCompensationLbl->hide();
        }
}