SongEditorPanelBpmWidget.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 <QtGui>
#include <QtWidgets>
 
#include "UndoActions.h"
#include "../HydrogenApp.h"
#include "../CommonStrings.h"
#include "SongEditorPanelBpmWidget.h"
#include "SongEditorPanel.h"
#include "SongEditor.h"
#include "../Widgets/Button.h"
 
#include <core/Hydrogen.h>
#include <core/Timeline.h>
 
namespace H2Core
{
 
SongEditorPanelBpmWidget::SongEditorPanelBpmWidget( QWidget* pParent, int nColumn, bool bTempoMarkerPresent )
        : QDialog( pParent )
        , m_nColumn( nColumn )
        , m_bTempoMarkerPresent( bTempoMarkerPresent )
{
        setupUi( this );
        setWindowTitle( bTempoMarkerPresent ? tr( "Edit Tempo Marker" ) :
                                        tr( "Create New Tempo Marker" ) );
        adjustSize();
        setFixedSize( width(), height() );
 
        auto pHydrogen = Hydrogen::get_instance();
 
        bpmSpinBox->setType( LCDSpinBox::Type::Double );
        bpmSpinBox->setMinimum( MIN_BPM );
        bpmSpinBox->setMaximum( MAX_BPM );
        bpmSpinBox->setValue( pHydrogen->getTimeline()->getTempoAtColumn( m_nColumn ) );
        bpmSpinBox->setToolTip( bTempoMarkerPresent ?
                                                                tr( "Alter tempo of selected tempo marker" ) :
                                                                tr( "Set tempo of new tempo marker" ) );
        // Required for correct focus highlighting.
        bpmSpinBox->setSize( QSize( 146, 23 ) );
        bpmSpinBox->setFocus();
 
        columnSpinBox->setType( LCDSpinBox::Type::Int );
        columnSpinBox->setMinimum( 1 );
        columnSpinBox->setMaximum( Preferences::get_instance()->getMaxBars() );
        columnSpinBox->setValue( m_nColumn + 1 );
        columnSpinBox->setToolTip( bTempoMarkerPresent ?
                                                                tr( "Move tempo marker to different column" ) :
                                                                tr( "Set column of new tempo marker" ) );
        // Required for correct focus highlighting.
        columnSpinBox->setSize( QSize( 146, 23 ) );
 
        deleteBtn->setSize( QSize( 180, 23 ) );
        deleteBtn->setIsActive( bTempoMarkerPresent );
        deleteBtn->setFixedFontSize( 12 );
}
 
 
 
 
SongEditorPanelBpmWidget::~SongEditorPanelBpmWidget()
{
}
 
 
 
void SongEditorPanelBpmWidget::on_CancelBtn_clicked()
{
        reject();
}
 
 
 
void SongEditorPanelBpmWidget::on_okBtn_clicked()
{
        auto pCommonStrings = HydrogenApp::get_instance()->getCommonStrings();
        float fNewBpm = bpmSpinBox->text().toFloat( nullptr );
 
        // In case the input text can not be parsed by Qt `fNewBpm' is 0
        // and also covered by the warning below.
        if ( fNewBpm > MAX_BPM || fNewBpm < MIN_BPM ){
                QMessageBox::warning(
                        this, "Hydrogen",
                        QString( tr( "Please enter a number within the range of " )
                                         .append( QString( "[%1,%2]" ).arg( MIN_BPM )
                                                          .arg( MAX_BPM ) ) ),
                        QMessageBox::Cancel, QMessageBox::Cancel );
                return;
        }
 
        auto pTimeline = Hydrogen::get_instance()->getTimeline();
        int nNewColumn = columnSpinBox->text().toInt() - 1;
        if ( ! ( m_bTempoMarkerPresent && nNewColumn == m_nColumn ) &&
                 pTimeline->hasColumnTempoMarker( nNewColumn ) ) {
                QMessageBox::warning(
                        this, "Hydrogen",
                        QString( tr( "There is already a tempo marker present at this Column. Please use left-click to edit it instead." ) ),
                        QMessageBox::Cancel, QMessageBox::Cancel );
                return;
        }
        
        float fOldBpm = pTimeline->getTempoAtColumn( m_nColumn );
 
        SE_editTimelineAction *action = new SE_editTimelineAction( m_nColumn, nNewColumn, fOldBpm, bpmSpinBox->value(), m_bTempoMarkerPresent );
        HydrogenApp::get_instance()->m_pUndoStack->push( action );
        accept();
}
 
 
void SongEditorPanelBpmWidget::on_deleteBtn_clicked()
{
        Hydrogen* pHydrogen = Hydrogen::get_instance();
        auto pTimeline = pHydrogen->getTimeline();
 
        float fBpm = pTimeline->getTempoAtColumn( m_nColumn );
 
        SE_deleteTimelineAction *action = new SE_deleteTimelineAction( m_nColumn, fBpm );
        HydrogenApp::get_instance()->m_pUndoStack->push( action );
        accept();
}
 
}