* Show artist images in ArtistView (lazy-loading).

* Added artist image api to LastFmPlugin.

src/audiocontrols.cpp

@@ -28,8 +28,6 @@
 
 #include "album.h"
 
-#define LASTFM_DEFAULT_COVER "http://cdn.last.fm/flatness/catalogue/noimage"
-
 static QString s_acInfoIdentifier = QString( "AUDIOCONTROLS" );
 
 
@@ -257,7 +255,7 @@ AudioControls::infoSystemInfo( QString caller, Tomahawk::InfoSystem::InfoType ty
         QPixmap pm;
         pm.loadFromData( ba );
 
-        if ( pm.isNull() || returnedData["url"].toString().startsWith( LASTFM_DEFAULT_COVER ) )
+        if ( pm.isNull() )
             ui->coverImage->setPixmap( m_defaultCover );
         else
             ui->coverImage->setPixmap( pm.scaled( ui->coverImage->size(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation ) );

src/libtomahawk/infosystem/infoplugins/lastfmplugin.cpp

@@ -47,7 +47,7 @@ LastFmPlugin::LastFmPlugin( QObject* parent )
     , m_authJob( 0 )
 {
     QSet< InfoType > supportedTypes;
-    supportedTypes << InfoMiscSubmitScrobble << InfoMiscSubmitNowPlaying << InfoAlbumCoverArt;
+    supportedTypes << InfoMiscSubmitScrobble << InfoMiscSubmitNowPlaying << InfoAlbumCoverArt << InfoArtistImages;
     qobject_cast< InfoSystem* >(parent)->registerInfoTypes(this, supportedTypes);
 
 /*
@@ -81,6 +81,10 @@ LastFmPlugin::LastFmPlugin( QObject* parent )
     }
 #endif
 
+
+    m_badUrls << QUrl( "http://cdn.last.fm/flatness/catalogue/noimage" )
+              << QUrl( "http://cdn.last.fm/flatness/catalogue/noimage/2/default_artist_medium.png" );
+
     connect( TomahawkSettings::instance(), SIGNAL( changed() ),
                                              SLOT( settingsChanged() ), Qt::QueuedConnection );
 }
@@ -91,6 +95,7 @@ LastFmPlugin::~LastFmPlugin()
     delete m_scrobbler;
 }
 
+
 void
 LastFmPlugin::dataError( const QString &caller, const InfoType type, const QVariant& data, Tomahawk::InfoSystem::InfoCustomData &customData )
 {
@@ -98,20 +103,36 @@ LastFmPlugin::dataError( const QString &caller, const InfoType type, const QVari
     return;
 }
 
+
 void
 LastFmPlugin::getInfo( const QString &caller, const InfoType type, const QVariant& data, Tomahawk::InfoSystem::InfoCustomData customData )
 {
     qDebug() << Q_FUNC_INFO;
-    if ( type == InfoMiscSubmitNowPlaying )
+
+    switch ( type )
+    {
+        case InfoMiscSubmitNowPlaying:
             nowPlaying( caller, type, data, customData );
-    else if ( type == InfoMiscSubmitScrobble )
+            break;
+
+        case InfoMiscSubmitScrobble:
             scrobble( caller, type, data, customData );
-    else if ( type == InfoAlbumCoverArt )
+            break;
+
+        case InfoArtistImages:
+            fetchArtistImages( caller, type, data, customData );
+            break;
+
+        case InfoAlbumCoverArt:
             fetchCoverArt( caller, type, data, customData );
-    else
+            break;
+
+        default:
             dataError( caller, type, data, customData );
+    }
 }
 
+
 void
 LastFmPlugin::nowPlaying( const QString &caller, const InfoType type, const QVariant& data, Tomahawk::InfoSystem::InfoCustomData &customData )
 {
@@ -140,6 +161,7 @@ LastFmPlugin::nowPlaying( const QString &caller, const InfoType type, const QVar
     emit info( caller, type, data, QVariant(), customData );
 }
 
+
 void
 LastFmPlugin::scrobble( const QString &caller, const InfoType type, const QVariant& data, Tomahawk::InfoSystem::InfoCustomData &customData )
 {
@@ -158,6 +180,7 @@ LastFmPlugin::scrobble( const QString &caller, const InfoType type, const QVaria
     emit info( caller, type, data, QVariant(), customData );
 }
 
+
 void
 LastFmPlugin::fetchCoverArt( const QString &caller, const InfoType type, const QVariant& data, Tomahawk::InfoSystem::InfoCustomData &customData )
 {
@@ -181,16 +204,43 @@ LastFmPlugin::fetchCoverArt( const QString &caller, const InfoType type, const Q
     emit getCachedInfo( criteria, 2419200000, caller, type, data, customData );
 }
 
+
+void
+LastFmPlugin::fetchArtistImages( const QString &caller, const InfoType type, const QVariant& data, Tomahawk::InfoSystem::InfoCustomData &customData )
+{
+    qDebug() << Q_FUNC_INFO;
+    if ( !data.canConvert< Tomahawk::InfoSystem::InfoCustomData >() )
+    {
+        dataError( caller, type, data, customData );
+        return;
+    }
+    InfoCustomData hash = data.value< Tomahawk::InfoSystem::InfoCustomData >();
+    if ( !hash.contains( "artist" ) )
+    {
+        dataError( caller, type, data, customData );
+        return;
+    }
+
+    Tomahawk::InfoSystem::InfoCacheCriteria criteria;
+    criteria["artist"] = hash["artist"].toString();
+
+    emit getCachedInfo( criteria, 2419200000, caller, type, data, customData );
+}
+
+
 void
 LastFmPlugin::notInCacheSlot( QHash<QString, QString> criteria, QString caller, Tomahawk::InfoSystem::InfoType type, QVariant input, Tomahawk::InfoSystem::InfoCustomData customData )
 {
     qDebug() << Q_FUNC_INFO;
-    if ( type == InfoAlbumCoverArt )
+
+    switch ( type )
+    {
+        case InfoAlbumCoverArt:
         {
             QString artistName = criteria["artist"];
             QString albumName = criteria["album"];
 
-        QString imgurl = "http://ws.audioscrobbler.com/2.0/?method=album.imageredirect&artist=%1&album=%2&size=medium&api_key=7a90f6672a04b809ee309af169f34b8b";
+            QString imgurl = "http://ws.audioscrobbler.com/2.0/?method=album.imageredirect&artist=%1&album=%2&autocorrect=1&size=medium&api_key=7a90f6672a04b809ee309af169f34b8b";
             QNetworkRequest req( imgurl.arg( artistName ).arg( albumName ) );
             QNetworkReply* reply = TomahawkUtils::nam()->get( req );
             reply->setProperty( "customData", QVariant::fromValue<Tomahawk::InfoSystem::InfoCustomData>( customData ) );
@@ -201,10 +251,29 @@ LastFmPlugin::notInCacheSlot( QHash<QString, QString> criteria, QString caller,
             connect( reply, SIGNAL( finished() ), SLOT( coverArtReturned() ) );
             return;
         }
-    else
+
+        case InfoArtistImages:
+        {
+            QString artistName = criteria["artist"];
+
+            QString imgurl = "http://ws.audioscrobbler.com/2.0/?method=artist.imageredirect&artist=%1&autocorrect=1&size=medium&api_key=7a90f6672a04b809ee309af169f34b8b";
+            QNetworkRequest req( imgurl.arg( artistName ) );
+            QNetworkReply* reply = TomahawkUtils::nam()->get( req );
+            reply->setProperty( "customData", QVariant::fromValue<Tomahawk::InfoSystem::InfoCustomData>( customData ) );
+            reply->setProperty( "origData", input );
+            reply->setProperty( "caller", caller );
+            reply->setProperty( "type", (uint)(type) );
+
+            connect( reply, SIGNAL( finished() ), SLOT( artistImagesReturned() ) );
+            return;
+        }
+
+        default:
             qDebug() << "Couldn't figure out what to do with this type of request after cache miss";
+    }
 }
 
+
 void
 LastFmPlugin::coverArtReturned()
 {
@@ -213,7 +282,10 @@ LastFmPlugin::coverArtReturned()
     QUrl redir = reply->attribute( QNetworkRequest::RedirectionTargetAttribute ).toUrl();
     if ( redir.isEmpty() )
     {
-        const QByteArray ba = reply->readAll();
+        QByteArray ba = reply->readAll();
+        if ( m_badUrls.contains( reply->url() ) )
+            ba = QByteArray();
+
         InfoCustomData returnedData;
         returnedData["imgbytes"] = ba;
         returnedData["url"] = reply->url().toString();
@@ -249,6 +321,54 @@ LastFmPlugin::coverArtReturned()
     reply->deleteLater();
 }
 
+
+void
+LastFmPlugin::artistImagesReturned()
+{
+    qDebug() << Q_FUNC_INFO;
+    QNetworkReply* reply = qobject_cast<QNetworkReply*>( sender() );
+    QUrl redir = reply->attribute( QNetworkRequest::RedirectionTargetAttribute ).toUrl();
+    if ( redir.isEmpty() )
+    {
+        QByteArray ba = reply->readAll();
+        if ( m_badUrls.contains( reply->url() ) )
+            ba = QByteArray();
+
+        InfoCustomData returnedData;
+        returnedData["imgbytes"] = ba;
+        returnedData["url"] = reply->url().toString();
+
+        InfoCustomData customData = reply->property( "customData" ).value< Tomahawk::InfoSystem::InfoCustomData >();
+        InfoType type = (Tomahawk::InfoSystem::InfoType)(reply->property( "type" ).toUInt());
+        emit info(
+            reply->property( "caller" ).toString(),
+                  type,
+                  reply->property( "origData" ),
+                  returnedData,
+                  customData
+                  );
+
+                  InfoCustomData origData = reply->property( "origData" ).value< Tomahawk::InfoSystem::InfoCustomData >();
+                  Tomahawk::InfoSystem::InfoCacheCriteria criteria;
+                  criteria["artist"] = origData["artist"].toString();
+                  emit updateCache( criteria, 2419200000, type, returnedData );
+    }
+    else
+    {
+        // Follow HTTP redirect
+        QNetworkRequest req( redir );
+        QNetworkReply* newReply = TomahawkUtils::nam()->get( req );
+        newReply->setProperty( "origData", reply->property( "origData" ) );
+        newReply->setProperty( "customData", reply->property( "customData" ) );
+        newReply->setProperty( "caller", reply->property( "caller" ) );
+        newReply->setProperty( "type", reply->property( "type" ) );
+        connect( newReply, SIGNAL( finished() ), SLOT( artistImagesReturned() ) );
+    }
+
+    reply->deleteLater();
+}
+
+
 void
 LastFmPlugin::settingsChanged()
 {

src/libtomahawk/infosystem/infoplugins/lastfmplugin.h

@@ -47,21 +47,29 @@ public:
 
 public slots:
     void settingsChanged();
+
     void onAuthenticated();
     void coverArtReturned();
+    void artistImagesReturned();
+
     virtual void notInCacheSlot( Tomahawk::InfoSystem::InfoCacheCriteria criteria, QString caller, Tomahawk::InfoSystem::InfoType type, QVariant input, Tomahawk::InfoSystem::InfoCustomData customData );
 
 private:
     void fetchCoverArt( const QString &caller, const InfoType type, const QVariant& data, Tomahawk::InfoSystem::InfoCustomData &customData );
-    void scrobble( const QString &caller, const InfoType type, const QVariant& data, InfoCustomData &customData );
+    void fetchArtistImages( const QString &caller, const InfoType type, const QVariant& data, Tomahawk::InfoSystem::InfoCustomData &customData );
+
     void createScrobbler();
+    void scrobble( const QString &caller, const InfoType type, const QVariant& data, InfoCustomData &customData );
     void nowPlaying( const QString &caller, const InfoType type, const QVariant& data, InfoCustomData &customData );
+
     void dataError( const QString &caller, const InfoType type, const QVariant& data, InfoCustomData &customData );
 
     lastfm::MutableTrack m_track;
     lastfm::Audioscrobbler* m_scrobbler;
     QString m_pw;
 
+    QList< QUrl > m_badUrls;
+
     QNetworkReply* m_authJob;
 };
 

src/libtomahawk/playlist/artistview.cpp

@@ -31,14 +31,18 @@
 #include "treeitemdelegate.h"
 #include "playlistmanager.h"
 
+static QString s_tmInfoIdentifier = QString( "TREEMODEL" );
+
+#define SCROLL_TIMEOUT 280
+
 using namespace Tomahawk;
 
 
 ArtistView::ArtistView( QWidget* parent )
     : QTreeView( parent )
+    , m_header( new TreeHeader( this ) )
     , m_model( 0 )
     , m_proxyModel( 0 )
-    , m_header( new TreeHeader( this ) )
 //    , m_delegate( 0 )
 {
     setAlternatingRowColors( true );
@@ -67,6 +71,12 @@ ArtistView::ArtistView( QWidget* parent )
     setFont( f );
     #endif
 
+    m_timer.setInterval( SCROLL_TIMEOUT );
+
+    connect( verticalScrollBar(), SIGNAL( rangeChanged( int, int ) ), SLOT( onViewChanged() ) );
+    connect( verticalScrollBar(), SIGNAL( valueChanged( int ) ), SLOT( onViewChanged() ) );
+    connect( &m_timer, SIGNAL( timeout() ), SLOT( onScrollTimeout() ) );
+
     connect( this, SIGNAL( doubleClicked( QModelIndex ) ), SLOT( onItemActivated( QModelIndex ) ) );
 }
 
@@ -168,12 +178,57 @@ ArtistView::onFilterChanged( const QString& )
 void
 ArtistView::startDrag( Qt::DropActions supportedActions )
 {
+    Q_UNUSED( supportedActions );
 }
 
 
-// Inspired from dolphin's draganddrophelper.cpp
 QPixmap
 ArtistView::createDragPixmap( int itemCount ) const
 {
+    Q_UNUSED( itemCount );
     return QPixmap();
 }
+
+
+void
+ArtistView::onViewChanged()
+{
+    if ( m_timer.isActive() )
+        m_timer.stop();
+
+    m_timer.start();
+}
+
+
+void
+ArtistView::onScrollTimeout()
+{
+    qDebug() << Q_FUNC_INFO;
+    if ( m_timer.isActive() )
+        m_timer.stop();
+
+    QModelIndex left = indexAt( viewport()->rect().topLeft() );
+    while ( left.isValid() && left.parent().isValid() )
+        left = left.parent();
+
+    QModelIndex right = indexAt( viewport()->rect().bottomLeft() );
+    while ( right.isValid() && right.parent().isValid() )
+        right = right.parent();
+
+    int max = m_proxyModel->trackCount();
+    if ( right.isValid() )
+        max = right.row() + 1;
+
+    for ( int i = left.row(); i < max; i++ )
+    {
+        TreeModelItem* item = m_model->itemFromIndex( m_proxyModel->mapToSource( m_proxyModel->index( i, 0 ) ) );
+
+        Tomahawk::InfoSystem::InfoCustomData trackInfo;
+        trackInfo["artist"] = QVariant::fromValue< QString >( item->artist()->name() );
+        trackInfo["pptr"] = QVariant::fromValue< qlonglong >( (qlonglong)item );
+
+        Tomahawk::InfoSystem::InfoSystem::instance()->getInfo(
+            s_tmInfoIdentifier, Tomahawk::InfoSystem::InfoArtistImages,
+            QVariant::fromValue< Tomahawk::InfoSystem::InfoCustomData >( trackInfo ), Tomahawk::InfoSystem::InfoCustomData() );
+    }
+}

src/libtomahawk/playlist/artistview.h

@@ -73,6 +73,8 @@ protected:
 
 private slots:
     void onFilterChanged( const QString& filter );
+    void onViewChanged();
+    void onScrollTimeout();
 
 private:
     QPixmap createDragPixmap( int itemCount ) const;
@@ -81,6 +83,8 @@ private:
     TreeModel* m_model;
     TreeProxyModel* m_proxyModel;
 //    PlaylistItemDelegate* m_delegate;
+
+    QTimer m_timer;
 };
 
 #endif // ARTISTVIEW_H

src/libtomahawk/playlist/treemodel.cpp

@@ -28,8 +28,6 @@
 #include "database/database.h"
 #include "utils/tomahawkutils.h"
 
-#define LASTFM_DEFAULT_COVER "http://cdn.last.fm/flatness/catalogue/noimage"
-
 static QString s_tmInfoIdentifier = QString( "TREEMODEL" );
 
 using namespace Tomahawk;
@@ -369,6 +367,7 @@ TreeModel::addTracks( const album_ptr& album, const QModelIndex& parent )
 
     DatabaseCommand_AllTracks* cmd = new DatabaseCommand_AllTracks( m_collection );
     cmd->setAlbum( album.data() );
+//    cmd->setArtist( album->artist().data() );
 
     QList< QVariant > rows;
     rows << parent.row();
@@ -442,7 +441,6 @@ TreeModel::onArtistsAdded( const QList<Tomahawk::artist_ptr>& artists )
         artistitem = new TreeModelItem( artist, m_rootItem );
         artistitem->cover = m_defaultCover;
         artistitem->index = createIndex( m_rootItem->children.count() - 1, 0, artistitem );
-
         connect( artistitem, SIGNAL( dataChanged() ), SLOT( onDataChanged() ) );
     }
 
@@ -544,7 +542,8 @@ TreeModel::infoSystemInfo( QString caller, Tomahawk::InfoSystem::InfoType type,
     Q_UNUSED( customData );
     qDebug() << Q_FUNC_INFO;
 
-    if ( caller != s_tmInfoIdentifier || type != Tomahawk::InfoSystem::InfoAlbumCoverArt )
+    if ( caller != s_tmInfoIdentifier ||
+       ( type != Tomahawk::InfoSystem::InfoAlbumCoverArt && type != Tomahawk::InfoSystem::InfoArtistImages ) )
     {
         qDebug() << "Info of wrong type or not with our identifier";
         return;
@@ -567,7 +566,7 @@ TreeModel::infoSystemInfo( QString caller, Tomahawk::InfoSystem::InfoType type,
         qlonglong p = pptr["pptr"].toLongLong();
         TreeModelItem* ai = reinterpret_cast<TreeModelItem*>(p);
 
-        if ( pm.isNull() || returnedData["url"].toString().startsWith( LASTFM_DEFAULT_COVER ) )
+        if ( pm.isNull() )
             ai->cover = m_defaultCover;
         else
             ai->cover = pm;