root/branches/undo/src/gui/src/HydrogenApp.cpp @ 2186

/*
 * 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 <hydrogen/config.h>
#include <hydrogen/version.h>

#include "HydrogenApp.h"
#include "Skin.h"
#include "PreferencesDialog.h"
#include "MainForm.h"
#include "PlayerControl.h"
#include "AudioEngineInfoForm.h"
#include "HelpBrowser.h"
#include "LadspaFXProperties.h"
#include "InstrumentRack.h"

#include "PatternEditor/PatternEditorPanel.h"
#include "InstrumentEditor/InstrumentEditorPanel.h"
#include "SongEditor/SongEditor.h"
#include "SongEditor/SongEditorPanel.h"
#include "PlaylistEditor/PlaylistDialog.h"
#include "SampleEditor/SampleEditor.h"
#include "Director.h"

#include "Mixer/Mixer.h"
#include "Mixer/MixerLine.h"

#include <hydrogen/hydrogen.h>
#include <hydrogen/event_queue.h>
#include <hydrogen/fx/LadspaFX.h>
#include <hydrogen/Preferences.h>
//#include <hydrogen/sample.h>

#include <QtGui>
//#include <QDir>

using namespace H2Core;

HydrogenApp* HydrogenApp::m_pInstance = NULL;
const char* HydrogenApp::__class_name = "HydrogenApp";

HydrogenApp::HydrogenApp( MainForm *pMainForm, Song *pFirstSong )
 : Object( __class_name )
 , m_pMainForm( pMainForm )
 , m_pMixer( NULL )
 , m_pPatternEditorPanel( NULL )
 , m_pAudioEngineInfoForm( NULL )
 , m_pSongEditorPanel( NULL )
 , m_pHelpBrowser( NULL )
 , m_pFirstTimeInfo( NULL )
 , m_pPlayerControl( NULL )
 , m_pPlaylistDialog( NULL )
 , m_pSampleEditor( NULL )
 , m_pDirector( NULL )

{
        m_pInstance = this;

        m_pEventQueueTimer = new QTimer(this);
        connect( m_pEventQueueTimer, SIGNAL( timeout() ), this, SLOT( onEventQueueTimer() ) );
        m_pEventQueueTimer->start(50);  // update at 20 fps


        // Create the audio engine :)
        Hydrogen::create_instance();
        Hydrogen::get_instance()->setSong( pFirstSong );
        Preferences::get_instance()->setLastSongFilename( pFirstSong->get_filename() );

        //setup the undo stack
        m_undoStack = new QUndoStack( this );

        // set initial title
        QString qsSongName( pFirstSong->__name );
        if( qsSongName == "Untitled Song" && !pFirstSong->get_filename().isEmpty() ){
                qsSongName = pFirstSong->get_filename();
                qsSongName = qsSongName.section( '/', -1 );
        }

        setWindowTitle( qsSongName  );

        Preferences *pPref = Preferences::get_instance();

        setupSinglePanedInterface();

        // restore audio engine form properties
        m_pAudioEngineInfoForm = new AudioEngineInfoForm( 0 );
        WindowProperties audioEngineInfoProp = pPref->getAudioEngineInfoProperties();
        m_pAudioEngineInfoForm->move( audioEngineInfoProp.x, audioEngineInfoProp.y );
        if ( audioEngineInfoProp.visible ) {
                m_pAudioEngineInfoForm->show();
        }
        else {
                m_pAudioEngineInfoForm->hide();
        }
        
        m_pPlaylistDialog = new PlaylistDialog( 0 );
        m_pDirector = new Director( 0 );
//      m_pSampleEditor = new SampleEditor( 0 );
        
        showInfoSplash();       // First time information
}



HydrogenApp::~HydrogenApp()
{
        INFOLOG( "[~HydrogenApp]" );
        m_pEventQueueTimer->stop();

        //delete the undo tmp directory
        QString dataDir = Preferences::get_instance()->getTmpDirectory();
        QString cmd = QString( "rm -rf \"" ) + dataDir + "\"";
        INFOLOG( cmd );
        if ( system( cmd.toLocal8Bit() ) != 0 ) {
                ERRORLOG( "Error executing '" + cmd + "'" );
        }

        delete m_pHelpBrowser;
        delete m_pAudioEngineInfoForm;
        delete m_pMixer;
        delete m_pPlaylistDialog;
        delete m_pDirector;
        delete m_pSampleEditor;

        Hydrogen *engine = Hydrogen::get_instance();
        if (engine) {
                H2Core::Song * song = engine->getSong();
                // Hydrogen calls removeSong on from its destructor, so here we just delete the objects:
                delete engine;
                delete song;
        }

        #ifdef H2CORE_HAVE_LADSPA
        for (uint nFX = 0; nFX < MAX_FX; nFX++) {
                delete m_pLadspaFXProperties[nFX];
        }
        #endif
        
}



/// Return an HydrogenApp m_pInstance
HydrogenApp* HydrogenApp::get_instance() {
        if (m_pInstance == NULL) {
                std::cerr << "Error! HydrogenApp::get_instance (m_pInstance = NULL)" << std::endl;
        }
        return m_pInstance;
}




void HydrogenApp::setupSinglePanedInterface()
{
        Preferences *pPref = Preferences::get_instance();

        // MAINFORM
        WindowProperties mainFormProp = pPref->getMainFormProperties();
        m_pMainForm->resize( mainFormProp.width, mainFormProp.height );
        m_pMainForm->move( mainFormProp.x, mainFormProp.y );

        QSplitter *pSplitter = new QSplitter( NULL );
        pSplitter->setOrientation( Qt::Vertical );
        pSplitter->setOpaqueResize( true );

        // SONG EDITOR
        m_pSongEditorPanel = new SongEditorPanel( pSplitter );
        WindowProperties songEditorProp = pPref->getSongEditorProperties();
        m_pSongEditorPanel->resize( songEditorProp.width, songEditorProp.height );

        // this HBox will contain the InstrumentRack and the Pattern editor
        QWidget *pSouthPanel = new QWidget( pSplitter );
        QHBoxLayout *pEditorHBox = new QHBoxLayout();
        pEditorHBox->setSpacing( 5 );
        pEditorHBox->setMargin( 0 );
        pSouthPanel->setLayout( pEditorHBox );

        // INSTRUMENT RACK
        m_pInstrumentRack = new InstrumentRack( NULL );

        // PATTERN EDITOR
        m_pPatternEditorPanel = new PatternEditorPanel( NULL );
        WindowProperties patternEditorProp = pPref->getPatternEditorProperties();
        m_pPatternEditorPanel->resize( patternEditorProp.width, patternEditorProp.height );

        pEditorHBox->addWidget( m_pPatternEditorPanel );
        pEditorHBox->addWidget( m_pInstrumentRack );

        // PLayer control
        m_pPlayerControl = new PlayerControl( NULL );


        QWidget *mainArea = new QWidget( m_pMainForm ); // this is the main widget
        m_pMainForm->setCentralWidget( mainArea );

        // LAYOUT!!
        QVBoxLayout *pMainVBox = new QVBoxLayout();
        pMainVBox->setSpacing( 5 );
        pMainVBox->setMargin( 0 );
        pMainVBox->addWidget( m_pPlayerControl );
        pMainVBox->addWidget( pSplitter );

        mainArea->setLayout( pMainVBox );




        // MIXER
        m_pMixer = new Mixer(0);
        WindowProperties mixerProp = pPref->getMixerProperties();
        m_pMixer->resize( mixerProp.width, mixerProp.height );
        m_pMixer->move( mixerProp.x, mixerProp.y );
        m_pMixer->updateMixer();
        if ( mixerProp.visible ) {
                m_pMixer->show();
        }
        else {
                m_pMixer->hide();
        }


        // HELP BROWSER
        QString sDocPath = QString( DataPath::get_data_path() ) + "/doc";
        QString sDocURI = sDocPath + "/manual.html";
        m_pHelpBrowser = new SimpleHTMLBrowser( NULL, sDocPath, sDocURI, SimpleHTMLBrowser::MANUAL );

#ifdef H2CORE_HAVE_LADSPA
        // LADSPA FX
        for (uint nFX = 0; nFX < MAX_FX; nFX++) {
                m_pLadspaFXProperties[nFX] = new LadspaFXProperties( NULL, nFX );
                m_pLadspaFXProperties[nFX]->hide();
                WindowProperties prop = pPref->getLadspaProperties(nFX);
                m_pLadspaFXProperties[nFX]->move( prop.x, prop.y );
                if ( prop.visible ) {
                        m_pLadspaFXProperties[nFX]->show();
                }
                else {
                        m_pLadspaFXProperties[nFX]->hide();
                }
        }
#endif

//      m_pMainForm->showMaximized();
}


void HydrogenApp::closeFXProperties()
{
#ifdef H2CORE_HAVE_LADSPA
        for (uint nFX = 0; nFX < MAX_FX; nFX++) {
                m_pLadspaFXProperties[nFX]->close();
        }
#endif
}



void HydrogenApp::setSong(Song* song)
{


        Song* oldSong = (Hydrogen::get_instance())->getSong();
        if (oldSong != NULL) {
                (Hydrogen::get_instance())->removeSong();
                delete oldSong;
                oldSong = NULL;
        }

        Hydrogen::get_instance()->setSong( song );
        Preferences::get_instance()->setLastSongFilename( song->get_filename() );

        m_pSongEditorPanel->updateAll();
        m_pPatternEditorPanel->updateSLnameLabel();

        QString songName( song->__name );
        if( songName == "Untitled Song" && !song->get_filename().isEmpty() ){
                songName = song->get_filename();
                songName = songName.section( '/', -1 );
        }
        setWindowTitle( songName  );

        m_pMainForm->updateRecentUsedSongList();
}



void HydrogenApp::showMixer(bool show)
{
        m_pMixer->setVisible( show );
}



void HydrogenApp::showPreferencesDialog()
{
        PreferencesDialog preferencesDialog(m_pMainForm);
        preferencesDialog.exec();
}




void HydrogenApp::setStatusBarMessage( const QString& msg, int msec )
{
        getPlayerControl()->showMessage( msg, msec );
}

void HydrogenApp::setWindowTitle( const QString& title){
    m_pMainForm->setWindowTitle( ( "Hydrogen " + QString( get_version().c_str()) + QString( " - " ) + title ) );
}

void HydrogenApp::setScrollStatusBarMessage( const QString& msg, int msec, bool test )
{
        getPlayerControl()->showScrollMessage( msg, msec , test);
}



void HydrogenApp::showAudioEngineInfoForm()
{
        m_pAudioEngineInfoForm->hide();
        m_pAudioEngineInfoForm->show();
}

void HydrogenApp::showPlaylistDialog()
{
        m_pPlaylistDialog->hide();
        m_pPlaylistDialog->show();
}


void HydrogenApp::showDirector()
{
        m_pDirector->hide();
        m_pDirector->show();
}


void HydrogenApp::showSampleEditor( QString name, int mSelectedLayer )
{

        if ( m_pSampleEditor ){
                QApplication::setOverrideCursor(Qt::WaitCursor);
                m_pSampleEditor->close();
                delete m_pSampleEditor;
                m_pSampleEditor = NULL;
                QApplication::restoreOverrideCursor();
        }
        QApplication::setOverrideCursor(Qt::WaitCursor);        
        m_pSampleEditor = new SampleEditor( 0, mSelectedLayer, name );
        m_pSampleEditor->show();
        QApplication::restoreOverrideCursor();
}



void HydrogenApp::showInfoSplash()
{
        QString sDocPath( DataPath::get_data_path().append( "/doc/infoSplash" ) );

        QDir dir(sDocPath);
        if ( !dir.exists() ) {
                ERRORLOG( QString("[showInfoSplash] Directory ").append( sDocPath ).append( " not found." ) );
                return;
        }

        QString sFilename;
        int nNewsID = 0;
        QFileInfoList list = dir.entryInfoList();

        for ( int i =0; i < list.size(); ++i ) {
                QString sFile = list.at( i ).fileName();

                if ( sFile == "." || sFile == ".." ) {
                        continue;
                }

                int nPos = sFile.lastIndexOf( "-" );
                QString sNewsID = sFile.mid( nPos + 1, sFile.length() - nPos - 1 );
                int nID = sNewsID.toInt();
                if ( nID > nNewsID ) {
                        sFilename = sFile;
                }
//              INFOLOG( "news: " + sFilename + " id: " + sNewsID );
        }
        INFOLOG( "[showInfoSplash] Selected news: " + sFilename );

        QString sLastRead = Preferences::get_instance()->getLastNews();
        if ( sLastRead != sFilename && !sFilename.isEmpty() ) {
                QString sDocURI = sDocPath;
                sDocURI.append( "/" ).append( sFilename );
                SimpleHTMLBrowser *m_pFirstTimeInfo = new SimpleHTMLBrowser( m_pMainForm, sDocPath, sDocURI, SimpleHTMLBrowser::WELCOME );
                if ( m_pFirstTimeInfo->exec() == QDialog::Accepted ) {
                        Preferences::get_instance()->setLastNews( sFilename );
                }
        }
}

void HydrogenApp::onDrumkitLoad( QString name ){
        setStatusBarMessage( trUtf8( "Drumkit loaded: [%1]" ).arg( name ), 2000 );
        m_pPatternEditorPanel->updateSLnameLabel( );
}

void HydrogenApp::enableDestructiveRecMode(){
        m_pPatternEditorPanel->displayorHidePrePostCB();
}


void HydrogenApp::onEventQueueTimer()
{
        // use the timer to do schedule instrument slaughter;
        EventQueue *pQueue = EventQueue::get_instance();

        Event event;
        while ( ( event = pQueue->pop_event() ).type != EVENT_NONE ) {
                for (int i = 0; i < (int)m_eventListeners.size(); i++ ) {
                        EventListener *pListener = m_eventListeners[ i ];

                        switch ( event.type ) {
                                case EVENT_STATE:
                                        pListener->stateChangedEvent( event.value );
                                        break;

                                case EVENT_PATTERN_CHANGED:
                                        pListener->patternChangedEvent();
                                        break;

                                case EVENT_PATTERN_MODIFIED:
                                        pListener->patternModifiedEvent();
                                        break;

                                case EVENT_SELECTED_PATTERN_CHANGED:
                                        pListener->selectedPatternChangedEvent();
                                        break;

                                case EVENT_SELECTED_INSTRUMENT_CHANGED:
                                        pListener->selectedInstrumentChangedEvent();
                                        break;

                                case EVENT_MIDI_ACTIVITY:
                                        pListener->midiActivityEvent();
                                        break;

                                case EVENT_NOTEON:
                                        pListener->noteOnEvent( event.value );
                                        break;

                                case EVENT_ERROR:
                                        pListener->errorEvent( event.value );
                                        break;

                                case EVENT_XRUN:
                                        pListener->XRunEvent();
                                        break;

                                case EVENT_METRONOME:
                                        pListener->metronomeEvent( event.value );
                                        break;

                                case EVENT_RECALCULATERUBBERBAND:
                                        pListener->rubberbandbpmchangeEvent();
                                        break;

                                case EVENT_PROGRESS:
                                        pListener->progressEvent( event.value );
                                        break;

                                default:
                                        ERRORLOG( QString("[onEventQueueTimer] Unhandled event: %1").arg( event.type ) );
                        }

                }
        }
}


void HydrogenApp::addEventListener( EventListener* pListener )
{
        if (pListener) {
                m_eventListeners.push_back( pListener );
        }
}


void HydrogenApp::removeEventListener( EventListener* pListener )
{
        for ( uint i = 0; i < m_eventListeners.size(); i++ ) {
                if ( pListener == m_eventListeners[ i ] ) {
                        m_eventListeners.erase( m_eventListeners.begin() + i );
                }
        }
}