playlistwindow.cpp

来自「Amarok是一款在LINUX或其他类UNIX操作系统中运行的音频播放器软件。 」· C++ 代码 · 共 1,244 行 · 第 1/4 页

        //there are a few keypresses that we intercept

        #define e static_cast<QKeyEvent*>(e)

        if( e->key() == Key_F2 )
        {
            // currentItem is ALWAYS visible.
            QListViewItem *item = pl->currentItem();

            // intercept F2 for inline tag renaming
            // NOTE: tab will move to the next tag
            // NOTE: if item is still null don't select first item in playlist, user wouldn't want that. It's silly.
            // TODO: berkus has solved the "inability to cancel" issue with KListView, but it's not in kdelibs yet..

            // item may still be null, but this is safe
            // NOTE: column 0 cannot be edited currently, hence we pick column 1
            pl->rename( item, 1 ); //TODO what if this column is hidden?

            return true;
        }

        if( e->state() & ControlButton )
        {
            int n = -1;
            switch( e->key() )
            {
                case Key_0: n = 0; break;
                case Key_1: n = 1; break;
                case Key_2: n = 2; break;
                case Key_3: n = 3; break;
                case Key_4: n = 4; break;
                case Key_5: n = 5; break;
            }
            if( n == 0 )
            {
                m_browsers->closeCurrentBrowser();
                return true;
            }
            else if( n > 0 && n <= m_browsers->visibleCount() )
            {
                m_browsers->showHideVisibleBrowser( n - 1 );
                return true;
            }
        }

        if( o == m_lineEdit ) //the search lineedit
        {
            QListViewItem *item;
            switch( e->key() )
            {
            case Key_Up:
            case Key_Down:
            case Key_PageDown:
            case Key_PageUp:
                pl->setFocus();
                QApplication::sendEvent( pl, e );
                return true;

            case Key_Return:
            case Key_Enter:
                item = *It( pl, It::Visible );
                m_lineEdit->clear();
                pl->m_filtertimer->stop(); //HACK HACK HACK
                if( e->state() & ControlButton )
                {
                    PLItemList in, out;
                    if( e->state() & ShiftButton )
                        for( It it( pl, It::Visible ); PlaylistItem *x = static_cast<PlaylistItem*>( *it ); ++it )
                        {
                            pl->queue( x, true );
                            ( pl->m_nextTracks.contains( x ) ? in : out ).append( x );
                        }
                    else
                    {
                        It it( pl, It::Visible );
                        pl->activate( *it );
                        ++it;
                        for( int i = 0; PlaylistItem *x = static_cast<PlaylistItem*>( *it ); ++i, ++it )
                        {
                            in.append( x );
                            pl->m_nextTracks.insert( i, x );
                        }
                    }
                    if( !in.isEmpty() || !out.isEmpty() )
                        emit pl->queueChanged( in, out );
                    pl->setFilter( "" );
                    pl->ensureItemCentered( ( e->state() & ShiftButton ) ? item : pl->currentTrack() );
                }
                else
                {
                    pl->setFilter( "" );
                    if( ( e->state() & ShiftButton ) && item )
                    {
                        pl->queue( item );
                        pl->ensureItemCentered( item );
                    }
                    else
                    {
                        pl->activate( item );
                        pl->showCurrentTrack();
                    }
                }
                return true;

            case Key_Escape:
                m_lineEdit->clear();
                return true;

            default:
                return false;
            }
        }

        //following are for Playlist::instance() only
        //we don't handle these in the playlist because often we manipulate the lineEdit too

        if( o == pl )
        {
            if( pl->currentItem() && ( e->key() == Key_Up && pl->currentItem()->itemAbove() == 0 && !(e->state() & Qt::ShiftButton) ) )
            {
                QListViewItem *lastitem = *It( pl, It::Visible );
                if ( !lastitem )
                    return false;
                while( lastitem->itemBelow() )
                    lastitem = lastitem->itemBelow();
                pl->currentItem()->setSelected( false );
                pl->setCurrentItem( lastitem );
                lastitem->setSelected( true );
                pl->ensureItemVisible( lastitem );
                return true;
            }
            if( pl->currentItem() && ( e->key() == Key_Down && pl->currentItem()->itemBelow() == 0 && !(e->state() & Qt::ShiftButton) ) )
            {
                pl->currentItem()->setSelected( false );
                pl->setCurrentItem( *It( pl, It::Visible ) );
                (*It( pl, It::Visible ))->setSelected( true );
                pl->ensureItemVisible( *It( pl, It::Visible ) );
                return true;
            }
            if( e->key() == Key_Delete )
            {
                pl->removeSelectedItems();
                return true;
            }
            if( ( ( e->key() >= Key_0 && e->key() <= Key_Z ) || e->key() == Key_Backspace || e->key() == Key_Escape ) && ( !e->state() || e->state() == Qt::ShiftButton ) ) //only if shift or no modifier key is pressed and 0-Z or backspace or escape
            {
                m_lineEdit->setFocus();
                QApplication::sendEvent( m_lineEdit, e );
                return true;
            }
        }
        #undef e
        break;

    default:
        break;
    }

    return QWidget::eventFilter( o, e );
}


void PlaylistWindow::closeEvent( QCloseEvent *e )
{
#ifdef Q_WS_MAC
    Q_UNUSED( e );
    hide();
#else
    Amarok::genericEventHandler( this, e );
#endif
}


void PlaylistWindow::showEvent( QShowEvent* )
{
    static bool firstTime = true;
    if( firstTime )
        Playlist::instance()->setFocus();
    firstTime = false;
}

#include <qdesktopwidget.h>
QSize PlaylistWindow::sizeHint() const
{
    return QApplication::desktop()->screenGeometry( (QWidget*)this ).size() / 1.5;
}


void PlaylistWindow::savePlaylist() const //SLOT
{
    Playlist *pl = Playlist::instance();

    PlaylistItem *item = pl->firstChild();
    if( item && !item->isVisible() )
        item = static_cast<PlaylistItem*>( item->itemBelow() );

    QString title = pl->playlistName();

    if( item && title == i18n( "Untitled" ) )
    {
        QString artist = item->artist();
        QString album  = item->album();

        bool useArtist = true, useAlbum = true;

        item = static_cast<PlaylistItem*>( item->itemBelow() );

        for( ; item; item = static_cast<PlaylistItem*>( item->itemBelow() ) )
        {
            if( artist != item->artist() )
                useArtist = false;
            if( album  != item->album() )
                useAlbum = false;

            if( !useArtist && !useAlbum )
                break;
        }

        if( useArtist && useAlbum )
            title = i18n("%1 - %2").arg( artist, album );
        else if( useArtist )
            title = artist;
        else if( useAlbum )
            title = album;
    }

    QString path = PlaylistDialog::getSaveFileName( title, pl->proposeOverwriteOnSave() );

    if( !path.isEmpty() && Playlist::instance()->saveM3U( path ) )
        PlaylistWindow::self()->showBrowser( "PlaylistBrowser" );
}


void PlaylistWindow::slotBurnPlaylist() const //SLOT
{
    K3bExporter::instance()->exportCurrentPlaylist();
}


void PlaylistWindow::slotPlayMedia() //SLOT
{
    // Request location and immediately start playback
    slotAddLocation( true );
}


void PlaylistWindow::slotAddLocation( bool directPlay ) //SLOT
{
    // open a file selector to add media to the playlist
    KURL::List files;
    //files = KFileDialog::getOpenURLs( QString::null, "*.*|" + i18n("All Files"), this, i18n("Add Media") );
    KFileDialog dlg( QString::null, "*.*|", this, "openMediaDialog", true );
    dlg.setCaption( directPlay ? i18n("Play Media (Files or URLs)") : i18n("Add Media (Files or URLs)") );
    dlg.setMode( KFile::Files | KFile::Directory );
    dlg.exec();
    files = dlg.selectedURLs();
    if( files.isEmpty() ) return;
    const int options = directPlay ? Playlist::Append | Playlist::DirectPlay : Playlist::Append;

    const KURL::List::ConstIterator end  = files.constEnd();

    for(  KURL::List::ConstIterator it = files.constBegin(); it != end; ++it )
        if( it == files.constBegin() )
            Playlist::instance()->insertMedia( *it, options );
        else
            Playlist::instance()->insertMedia( *it, Playlist::Append );
}

void PlaylistWindow::slotAddStream() //SLOT
{
    bool ok;
    QString url = KInputDialog::getText( i18n("Add Stream"), i18n("URL"), QString::null, &ok, this );

    if ( !ok ) return;

    KURL::List media( KURL::fromPathOrURL( url ) );
    Playlist::instance()->insertMedia( media );
}


void PlaylistWindow::playLastfmPersonal() //SLOT
{
    if( !LastFm::Controller::checkCredentials() ) return;

    const KURL url( QString( "lastfm://user/%1/personal" )
                    .arg( AmarokConfig::scrobblerUsername() ) );

    Playlist::instance()->insertMedia( url, Playlist::Append|Playlist::DirectPlay );
}


void PlaylistWindow::addLastfmPersonal() //SLOT
{
    if( !LastFm::Controller::checkCredentials() ) return;

    const KURL url( QString( "lastfm://user/%1/personal" )
                    .arg( AmarokConfig::scrobblerUsername() ) );

    Playlist::instance()->insertMedia( url );
}


void PlaylistWindow::playLastfmNeighbor() //SLOT
{
    if( !LastFm::Controller::checkCredentials() ) return;

    const KURL url( QString( "lastfm://user/%1/neighbours" )
                    .arg( AmarokConfig::scrobblerUsername() ) );

    Playlist::instance()->insertMedia( url, Playlist::Append|Playlist::DirectPlay );
}