root/branches/audiofilebrowser/gui/src/AudioFileBrowser/AudioFileBrowser.cpp @ 492

/*
 * Hydrogen
 * Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */


#include "AudioFileBrowser.h"
#include "../HydrogenApp.h"
#include "InstrumentEditor/InstrumentEditor.h"
#include "SampleWaveDisplay.h"
#include "../widgets/Button.h"

#include <hydrogen/h2_exception.h>
#include <hydrogen/Preferences.h>
#include <hydrogen/sample.h>
#include <hydrogen/audio_engine.h>

#include <QTreeWidget>
#include <QMessageBox>

using namespace H2Core;
using namespace std;

AudioFileBrowser::AudioFileBrowser ( QWidget* pParent )
                : QDialog ( pParent )
                , Object ( "AudioFileBrowser" )
{

        setupUi ( this );
        INFOLOG ( "INIT" );
        setWindowTitle ( trUtf8 ( "Audio File Browser" ) );
        setFixedSize ( width(), height() );
        installEventFilter( this );


        model = new QDirModel();
        model->setFilter( QDir::AllEntries | QDir::NoDotAndDotDot );
        model->setSorting( QDir::DirsFirst |QDir::Name );
        QModelIndex index = model->index( QDir::currentPath() );
        
        m_pPlayBtn->setEnabled( false );
        openBTN->setEnabled( false );

        tree = new QTreeView( treeView );
        tree->setModel( model );
        tree->resize( 799, 310 );
        tree->header()->resizeSection( 0, 405 );
        tree->setRootIndex( model->index( Preferences::getInstance()->__lastsampleDirectory ) );

        pathLineEdit->setText( Preferences::getInstance()->__lastsampleDirectory );
        m_psamplefilename = ""; 
        m_pselectedFile = "";

        m_pSampleWaveDisplay = new SampleWaveDisplay( waveformview );
        m_pSampleWaveDisplay->updateDisplay( NULL );
        m_pSampleWaveDisplay->move( 3, 3 );

        playSamplescheckBox->setChecked( Preferences::getInstance()->__playsamplesonclicking );

        connect( tree, SIGNAL( clicked( const QModelIndex&) ), SLOT( clicked( const QModelIndex& ) ) );
        connect( pathLineEdit, SIGNAL( returnPressed() ), SLOT( updateModelIndex() ) );
        
}



AudioFileBrowser::~AudioFileBrowser()
{
        INFOLOG ( "DESTROY" );
}


void AudioFileBrowser::updateModelIndex()
{
        QString toremove = "";
        QString newpath = pathLineEdit->text();

        if( QDir( newpath ).exists() ){
                tree->setRootIndex( model->index( newpath ) );
        }else
        {
                toremove = newpath.section( '/', -1 );
//              QMessageBox::information ( this, "Hydrogen", newpath + toremove);
                newpath.replace( toremove, "" );
                tree->setRootIndex( model->index( newpath ) );
        }

}

void AudioFileBrowser::clicked( const QModelIndex& index )
{

        QString path = model->filePath( index );
        pathLineEdit->setText( path );
        filelineedit->setText( path );
        m_pSampleWaveDisplay->updateDisplay( NULL );


        updateModelIndex(); //with this you have a navigation like konqueror 

        if ( model->isDir( index ) )
                 return;
        
        QString name = path.section( '/', -1 ); 
        
        QString path2 = path;
        QString onlypath = path;
        if ( name != "" ){
                onlypath = path.replace( name, "" );
        }
                
        name = name.left( '.' );

        QString message = "Name: " + name;
        filelineedit->setText( path2 );
        pathLineEdit->setText( onlypath );


        if      (
                ( path2.endsWith( ".wav" ) ) ||
                ( path2.endsWith( ".WAV" ) ) ||
                ( path2.endsWith( ".au" ) ) ||
                ( path2.endsWith( ".AU" ) ) ||
                ( path2.endsWith( ".aiff" ) ) ||
                ( path2.endsWith( ".AIFF" ) ) ||
                ( path2.endsWith( ".flac" ) ) ||
                ( path2.endsWith( ".FLAC" ) )
                ) {


                        Sample *pNewSample = Sample::load( path2 );
                        if ( pNewSample ) {
                                m_pNBytesLable->setText( trUtf8( "Size: %1 bytes" ).arg( pNewSample->get_size() / 2 ) );
                                m_pSamplerateLable->setText( trUtf8( "Samplerate: %1" ).arg( pNewSample->get_sample_rate() ) );
                                float sec = ( float )( pNewSample->get_n_frames() / (float)pNewSample->get_sample_rate() );
                                QString qsec = "";
                                qsec.sprintf( "%2.2f", sec );
                                m_pLengthLable->setText( trUtf8( "Samplelength: " ) + qsec + trUtf8( " s" ) );

                                //second part of check prevent left sample objects into memory
                                if (playSamplescheckBox->isChecked() && AudioEngine::get_instance()->get_sampler()->get_playing_notes_number() == 0 ){
                                        AudioEngine::get_instance()->get_sampler()->preview_sample(pNewSample);
                                }else{
                                        delete pNewSample;
                                }

                                m_pSampleWaveDisplay->updateDisplay( path2 );
                                m_pPlayBtn->setEnabled( true );
                                openBTN->setEnabled( true );
                                m_psamplefilename = path2;
                        }
                
                        m_pNameLabel->setText( message );
                }else{
                        m_pNameLabel->setText( trUtf8( "Name:"));
                        m_pNBytesLable->setText( trUtf8( "Size:" ) );
                        m_pSamplerateLable->setText( trUtf8( "Samplerate:" ) );
                        m_pLengthLable->setText( trUtf8( "Samplelength:" ) );
                        m_pSampleWaveDisplay->updateDisplay( NULL );
                        m_pPlayBtn->setEnabled( false );
                        openBTN->setEnabled( false );
                        m_psamplefilename = "";
                }
}



void AudioFileBrowser::on_m_pPlayBtn_clicked()
{

        if( QFile( m_psamplefilename ).exists() == false )
                return;
        Sample *pNewSample = Sample::load( m_psamplefilename );
        if ( pNewSample ){
                AudioEngine::get_instance()->get_sampler()->preview_sample( pNewSample );
                }
}



void AudioFileBrowser::on_cancelBTN_clicked()
{
        Preferences::getInstance()->__lastsampleDirectory = pathLineEdit->text();
        m_pselectedFile = "";
        reject();
}



void AudioFileBrowser::on_openBTN_clicked()
{
        if      (
                ( ( filelineedit->text().endsWith( ".wav" ) ) ||
                ( filelineedit->text().endsWith( ".WAV" ) ) ||
                ( filelineedit->text().endsWith( ".au" ) ) ||
                ( filelineedit->text().endsWith( ".AU" ) ) ||
                ( filelineedit->text().endsWith( ".aiff" ) ) ||
                ( filelineedit->text().endsWith( ".AIFF" ) ) ||
                ( filelineedit->text().endsWith( ".flac" ) ) ||
                ( filelineedit->text().endsWith( ".FLAC" ) ) ) &&
                ( QFile( filelineedit->text() ).exists() == true )
                ) {             
                        m_pselectedFile = filelineedit->text();
                        
                }else
                {
                        m_pselectedFile = "";
                }
        Preferences::getInstance()->__lastsampleDirectory = pathLineEdit->text();
        accept();
}



void AudioFileBrowser::on_playSamplescheckBox_clicked()
{
        Preferences::getInstance()->__playsamplesonclicking = playSamplescheckBox->isChecked();
}



QString AudioFileBrowser::selectedFile()
{
        return m_pselectedFile;
}



void AudioFileBrowser::on_m_pPathHometoolButton_clicked()
{
        pathLineEdit->setText( QDir::homePath() );
        tree->setRootIndex( model->index( QDir::homePath() ) );
}



void AudioFileBrowser::on_m_pPathUptoolButton_clicked()
{
        QString toremove = "";
        QString path = pathLineEdit->text();

        if ( path.length() <=1 ) 
                return;

        if ( path.endsWith( '/') ) {
                toremove = path.section( '/', -2 );
        }else
        {
                toremove = path.section( '/', -1 );
        }
        
        QString updir =  path.replace( toremove, "" );
        pathLineEdit->setText( updir );
        tree->setRootIndex( model->index( updir ) );
}