TWK-434: Added drag indicators for artist and album

src/libtomahawk/playlist/albumview.cpp

@@ -227,7 +227,7 @@ AlbumView::startDrag( Qt::DropActions supportedActions )
 
     QDrag* drag = new QDrag( this );
     drag->setMimeData( data );
-    const QPixmap p = TomahawkUtils::createDragPixmap( indexes.count() );
+    const QPixmap p = TomahawkUtils::createDragPixmap( TomahawkUtils::MediaTypeAlbum, indexes.count() );
     drag->setPixmap( p );
     drag->setHotSpot( QPoint( -20, -20 ) );
 

src/libtomahawk/playlist/artistview.cpp

@@ -215,7 +215,15 @@ ArtistView::startDrag( Qt::DropActions supportedActions )
 
     QDrag* drag = new QDrag( this );
     drag->setMimeData( data );
-    const QPixmap p = TomahawkUtils::createDragPixmap( indexes.count() );
+
+    QPixmap p;
+    if ( data->hasFormat( "application/tomahawk.metadata.artist" ) )
+        p = TomahawkUtils::createDragPixmap( TomahawkUtils::MediaTypeArtist, indexes.count() );
+    else if ( data->hasFormat( "application/tomahawk.metadata.album" ) )
+        p = TomahawkUtils::createDragPixmap( TomahawkUtils::MediaTypeAlbum, indexes.count() );
+    else
+        p = TomahawkUtils::createDragPixmap( TomahawkUtils::MediaTypeTrack, indexes.count() );
+
     drag->setPixmap( p );
     drag->setHotSpot( QPoint( -20, -20 ) );
 

src/libtomahawk/playlist/trackview.cpp

@@ -378,7 +378,7 @@ TrackView::startDrag( Qt::DropActions supportedActions )
 
     QDrag* drag = new QDrag( this );
     drag->setMimeData( data );
-    const QPixmap p = TomahawkUtils::createDragPixmap( indexes.count() );
+    const QPixmap p = TomahawkUtils::createDragPixmap( TomahawkUtils::MediaTypeTrack, indexes.count() );
     drag->setPixmap( p );
     drag->setHotSpot( QPoint( -20, -20 ) );
 

src/libtomahawk/playlist/treemodel.cpp

@@ -349,6 +349,7 @@ TreeModel::mimeData( const QModelIndexList &indexes ) const
 
     // lets try with album only
     fail = false;
+    resultData.clear();
     foreach ( const QModelIndex& i, indexes)
     {
         if ( i.column() > 0 || indexes.contains( i.parent() ) )
@@ -380,6 +381,7 @@ TreeModel::mimeData( const QModelIndexList &indexes ) const
 
     // lets try with tracks only
     fail = false;
+    resultData.clear();
     foreach ( const QModelIndex& i, indexes)
     {
         if ( i.column() > 0 || indexes.contains( i.parent() ) )
@@ -408,6 +410,7 @@ TreeModel::mimeData( const QModelIndexList &indexes ) const
     }
 
     // Ok... we have to use mixed
+    resultData.clear();
     foreach ( const QModelIndex& i, indexes )
     {
         if ( i.column() > 0 || indexes.contains( i.parent() ) )

src/libtomahawk/utils/querylabel.cpp

@@ -568,7 +568,7 @@ QueryLabel::startDrag()
     mimeData->setData( "application/tomahawk.query.list", queryData );
     QDrag *drag = new QDrag( this );
     drag->setMimeData( mimeData );
-    drag->setPixmap( TomahawkUtils::createDragPixmap() );
+    drag->setPixmap( TomahawkUtils::createDragPixmap( TomahawkUtils::MediaTypeTrack ) );
 
 //    QPoint hotSpot = event->pos() - child->pos();
 //    drag->setHotSpot( hotSpot );

src/libtomahawk/utils/tomahawkutils.cpp

@@ -307,7 +307,7 @@ alphaBlend( const QColor& colorFrom, const QColor& colorTo, float opacity )
 
 
 QPixmap
-createDragPixmap( int itemCount )
+createDragPixmap( MediaType type, int itemCount )
 {
     // If more than one item is dragged, align the items inside a
     // rectangular grid. The maximum grid size is limited to 5 x 5 items.
@@ -344,11 +344,26 @@ createDragPixmap( int itemCount )
 
     QPainter painter( &dragPixmap );
     painter.setRenderHint( QPainter::Antialiasing );
+
+    QPixmap pixmap;
+    switch ( type )
+    {
+    case MediaTypeArtist:
+        pixmap = QPixmap( ":/data/images/artist-icon.png" ).scaledToWidth( size, Qt::SmoothTransformation );
+        break;
+    case MediaTypeAlbum:
+        pixmap = QPixmap( ":/data/images/album-icon.png" ).scaledToWidth( size, Qt::SmoothTransformation );
+        break;
+    case MediaTypeTrack:
+        pixmap = QPixmap( QString( ":/data/images/track-icon-%2x%2.png" ).arg( size ) );
+        break;
+    }
+
     int x = 0;
     int y = 0;
     for( int i = 0; i < itemCount; ++i )
     {
-        const QPixmap pixmap = QPixmap( QString( ":/data/images/track-icon-%2x%2.png" ).arg( size ) );
+
         painter.drawPixmap( x, y, pixmap );
 
         x += size + 1;

src/libtomahawk/utils/tomahawkutils.h

@@ -40,6 +40,13 @@ class QNetworkAccessManager;
 
 namespace TomahawkUtils
 {
+    enum MediaType
+    {
+        MediaTypeArtist,
+        MediaTypeAlbum,
+        MediaTypeTrack
+    };
+
     class DLLEXPORT NetworkProxyFactory : public QNetworkProxyFactory
     {
     public:
@@ -74,7 +81,7 @@ namespace TomahawkUtils
     DLLEXPORT QString extensionToMimetype( const QString& extension );
 
     DLLEXPORT QColor alphaBlend( const QColor& colorFrom, const QColor& colorTo, float opacity );
-    DLLEXPORT QPixmap createDragPixmap( int itemCount = 1 );
+    DLLEXPORT QPixmap createDragPixmap( MediaType type, int itemCount = 1 );
 
     DLLEXPORT void drawBackgroundAndNumbers( QPainter* p, const QString& text, const QRect& rect );