playlistwidget.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.7平台上编译为嵌入式图形界面操作系统。

	    break;
    }
}


void PlayListWidget::initializeStates()
{
    d->tbPlay->setOn( mediaPlayerState->playing() );
    d->tbLoop->setOn( mediaPlayerState->looping() );
    d->tbShuffle->setOn( mediaPlayerState->shuffled() );
    d->tbFull->setOn( mediaPlayerState->fullscreen() );
    d->tbScale->setOn( mediaPlayerState->scaled() );
}


void PlayListWidget::readWinAmpPlayListFile( QString filename )
{
    Config cfg( filename );

    // WinAmp .pls file format fields
    cfg.setGroup("playlist");
    
    QString playlistName = cfg.readEntry( "PlaylistName", 0 );
    QString version = cfg.readEntry( "Version", 0 );
    int noOfFiles = cfg.readNumEntry( "NumberOfEntries", 0 );

    for ( int i = 0; i < noOfFiles; i++ ) {
	QString entryName;
	entryName.sprintf( "File%i", i + 1 );
	QString File = cfg.readEntry( entryName );
	entryName.sprintf( "Title%i", i + 1 );
	QString Title = cfg.readEntry( entryName );
	DocLnk lnk;
	lnk.setFile( File );
	lnk.setName( Title );
	if ( lnk.isValid() )
            addToSelection( lnk );
    }
}


void PlayListWidget::writeWinAmpPlayListFile( QString filename ) const
{
    Config cfg( filename );
    cfg.setGroup("playlist");

    int noOfFiles = 0;

    d->selectedFiles->first();
    do {
	const DocLnk *lnk = d->selectedFiles->current();
	if ( lnk ) {
	    QString entryName;
	    entryName.sprintf( "File%i", noOfFiles + 1 );
	    cfg.writeEntry( entryName, lnk->file() );
	    entryName.sprintf( "Title%i", noOfFiles + 1 );
	    cfg.writeEntry( entryName, lnk->name() );
	    noOfFiles++;
	}
    } while ( d->selectedFiles->advanceSelection() );
    
    cfg.writeEntry("NumberOfEntries", noOfFiles );
}


void PlayListWidget::readPlayList( QString filename )
{
    Config cfg( filename );

    cfg.setGroup("PlayList");
    
    int noOfFiles = cfg.readNumEntry("NumberOfFiles", 0 );

    for ( int i = 0; i < noOfFiles; i++ ) {
	QString entryName;
	entryName.sprintf( "File%i", i + 1 );
	QString linkFile = cfg.readEntry( entryName );
	DocLnk lnk( linkFile );
	if ( lnk.isValid() )
            addToSelection( lnk );
    }
}


void PlayListWidget::writePlayList( QString filename ) const
{
    Config cfg( filename );
    cfg.setGroup("PlayList");

    cfg.clearGroup();

    int noOfFiles = 0;

    d->selectedFiles->first();
    do {
	const DocLnk *lnk = d->selectedFiles->current();
	if ( lnk ) {
	    QString entryName;
	    entryName.sprintf( "File%i", noOfFiles + 1 );
	    cfg.writeEntry( entryName, lnk->linkFile() );
	    // if this link does exist, add it so we have the file
	    // next time...
	    if ( !QFile::exists( lnk->linkFile() ) ) {
		// the way writing lnks doesn't really check for out
		// of disk space, but check it anyway.
		if ( !lnk->writeLink() ) {
		    QMessageBox::critical( 0, tr("Out of space"),
					   tr( "There was a problem saving "
					       "the playlist.\nYour playlist "
					       "may be missing some entries\n"
					       "the next time you start it." )
					   );
		}
	    }		   
	    noOfFiles++;
	}
    } while ( d->selectedFiles->advanceSelection() );
    
    cfg.writeEntry("NumberOfFiles", noOfFiles );
}


void PlayListWidget::addToSelection( const DocLnk& lnk )
{
    d->selectedFiles->addToSelection( lnk );
}


void PlayListWidget::setDocument(const QString& fileref)
{
    d->ts->pauseLoading();

    if ( fileref.isNull() ) {
	QMessageBox::critical( 0, tr( "Invalid File" ), tr( "There was a problem in getting the file." ) );
	return;
    }

    d->setDocumentActive = TRUE;
    d->setDoc = DocLnk( fileref );

    // Start playing
    mediaPlayerState->setPlaying( FALSE );
    QTimer::singleShot( 1, mediaPlayerState, SLOT( setPlaying() ) );
}


void PlayListWidget::setActiveWindow()
{
    mediaPlayerState->setView( mediaPlayerState->view() );
}


const DocLnk *PlayListWidget::current()
{
    if ( d->setDocumentActive ) 
	return &d->setDoc;

    switch ( d->ts->tab() ) {
	case TabbedSelector::AudioTab:
	    return d->audioFiles->current();
	case TabbedSelector::VideoTab:
	    return d->videoFiles->current();
	case TabbedSelector::PlaylistTab:
	    return d->selectedFiles->current();
    }
    return 0;
}


bool PlayListWidget::prev()
{
    if ( d->setDocumentActive ) {
        d->setDocumentActive = FALSE;
	d->ts->resumeLoading();
    }

    switch ( d->ts->tab() ) {
	case TabbedSelector::AudioTab:
	    return d->audioFiles->prev();
	case TabbedSelector::VideoTab:
	    return d->videoFiles->prev();
	case TabbedSelector::PlaylistTab:
	    return d->selectedFiles->prev();
    }
    return FALSE;
}


bool PlayListWidget::next()
{
    if ( d->setDocumentActive ) {
        d->setDocumentActive = FALSE;
	d->ts->resumeLoading();
    }

    switch ( d->ts->tab() ) {
	case TabbedSelector::AudioTab:
	    return d->audioFiles->next();
	case TabbedSelector::VideoTab:
	    return d->videoFiles->next();
	case TabbedSelector::PlaylistTab:
	    return d->selectedFiles->next();
    }
    return FALSE;
}


bool PlayListWidget::first()
{
    if ( d->setDocumentActive ) {
        d->setDocumentActive = FALSE;
	d->ts->resumeLoading();
    }

    switch ( d->ts->tab() ) {
	case TabbedSelector::AudioTab:
	    return d->audioFiles->first();
	case TabbedSelector::VideoTab:
	    return d->videoFiles->first();
	case TabbedSelector::PlaylistTab:
	    return d->selectedFiles->first();
    }
    return FALSE;
}


bool PlayListWidget::last()
{
    if ( d->setDocumentActive ) {
        d->setDocumentActive = FALSE;
	d->ts->resumeLoading();
    }

    switch ( d->ts->tab() ) {
	case TabbedSelector::AudioTab:
	    return d->audioFiles->last();
	case TabbedSelector::VideoTab:
	    return d->videoFiles->last();
	case TabbedSelector::PlaylistTab:
	    return d->selectedFiles->last();
    }
    return FALSE;
}


void PlayListWidget::saveList()
{
    QString filename;
//  pseudo code
//  filename = QLineEdit->getText();    
    writePlayList( filename + ".playlist" );
}


void PlayListWidget::loadList()
{
    QString filename;
//  pseudo code
//  filename = FileSelector->openFile( "*.playlist" );
    readPlayList( filename + ".playlist" );
}


void PlayListWidget::viewClosed()
{
    if ( d->setDocumentActive )
	qApp->exit();
    else
	mediaPlayerState->setList();
}


void PlayListWidget::setView( View view )
{
    if ( view == ListView ) {
	d->setDocumentActive = FALSE;
	d->ts->resumeLoading();
	mainDocumentWindow->raiseWidget( this );
    }
}


void PlayListWidget::showInfo()
{
    const DocLnk *cur = current();
    if ( cur ) {
	MediaFileInfoWidget *infoWidget = new MediaFileInfoWidget( *cur, 0 );
	QPEApplication::execDialog( infoWidget );
    }
}