* Added show() / hide() methods to OverlayWidget. Results in a fade-in / -out.

* Made using OverlayWidget a lot nicer. No need to fiddle with paintEvents any longer.

src/libtomahawk/database/databasecommand_alltracks.cpp

@@ -110,7 +110,6 @@ DatabaseCommand_AllTracks::exec( DatabaseImpl* dbi )
 
     qDebug() << Q_FUNC_INFO << ql.length();
 
-    if ( ql.count() )
-        emit tracks( ql, m_collection );
+    emit tracks( ql, m_collection );
     emit done( m_collection );
 }

src/libtomahawk/playlist/collectionflatmodel.cpp

@@ -159,7 +159,10 @@ void
 CollectionFlatModel::onTracksAdded( const QList<Tomahawk::query_ptr>& tracks, const Tomahawk::collection_ptr& collection )
 {
     if ( !tracks.count() )
+    {
+        emit trackCountChanged( rowCount( QModelIndex() ) );
         return;
+    }
 
     int c = rowCount( QModelIndex() );
     QPair< int, int > crows;

src/libtomahawk/playlist/collectionview.cpp

@@ -32,6 +32,15 @@ CollectionView::~CollectionView()
 }
 
 
+void
+CollectionView::setModel( TrackModel* model )
+{
+    TrackView::setModel( model );
+
+    connect( model, SIGNAL( trackCountChanged( unsigned int ) ), SLOT( onTrackCountChanged( unsigned int ) ) );
+}
+
+
 void
 CollectionView::dragEnterEvent( QDragEnterEvent* event )
 {
@@ -74,14 +83,13 @@ CollectionView::onCustomContextMenu( const QPoint& pos )
 
 
 void
-CollectionView::paintEvent( QPaintEvent* event )
+CollectionView::onTrackCountChanged( unsigned int tracks )
 {
-    TrackView::paintEvent( event );
-    QPainter painter( viewport() );
-
-    if ( !model()->trackCount() )
+    if ( tracks == 0 )
     {
         overlay()->setText( tr( "This collection is empty." ) );
-        overlay()->paint( &painter );
+        overlay()->show();
     }
+    else
+        overlay()->hide();
 }

src/libtomahawk/playlist/collectionview.h

@@ -15,12 +15,14 @@ public:
     explicit CollectionView( QWidget* parent = 0 );
     ~CollectionView();
 
+    virtual void setModel( TrackModel* model );
+
 private slots:
     void onCustomContextMenu( const QPoint& pos );
+    void onTrackCountChanged( unsigned int tracks );
 
 protected:
     virtual void dragEnterEvent( QDragEnterEvent* event );
-    void paintEvent( QPaintEvent* event );
 
 private:
     void setupMenus();

src/libtomahawk/playlist/playlistmodel.cpp

@@ -89,8 +89,8 @@ PlaylistModel::loadPlaylist( const Tomahawk::playlist_ptr& playlist )
         emit endInsertRows();
     }
 
-    qDebug() << rowCount( QModelIndex() );
     emit loadingFinished();
+    emit trackCountChanged( rowCount( QModelIndex() ) );
 }
 
 
@@ -181,7 +181,10 @@ void
 PlaylistModel::onTracksInserted( unsigned int row, const QList<Tomahawk::query_ptr>& tracks, const Tomahawk::collection_ptr& collection )
 {
     if ( !tracks.count() )
+    {
+        emit trackCountChanged( rowCount( QModelIndex() ) );
         return;
+    }
 
     int c = row;
     QPair< int, int > crows;
@@ -207,7 +210,6 @@ PlaylistModel::onTracksInserted( unsigned int row, const QList<Tomahawk::query_p
 
     emit endInsertRows();
     emit trackCountChanged( rowCount( QModelIndex() ) );
-    qDebug() << rowCount( QModelIndex() );
 }
 
 

src/libtomahawk/playlist/playlistview.cpp

@@ -30,8 +30,9 @@ void
 PlaylistView::setModel( TrackModel* model )
 {
     TrackView::setModel( model );
-
     setColumnHidden( 5, true ); // Hide age column per default
+
+    connect( model, SIGNAL( trackCountChanged( unsigned int ) ), SLOT( onTrackCountChanged( unsigned int ) ) );
 }
 
 
@@ -110,14 +111,13 @@ PlaylistView::deleteItems()
 
 
 void
-PlaylistView::paintEvent( QPaintEvent* event )
+PlaylistView::onTrackCountChanged( unsigned int tracks )
 {
-    TrackView::paintEvent( event );
-    QPainter painter( viewport() );
-
-    if ( !model()->trackCount() )
+    if ( tracks == 0 )
     {
         overlay()->setText( tr( "This playlist is currently empty. Add some tracks to it and enjoy the music!" ) );
-        overlay()->paint( &painter );
+        overlay()->show();
     }
+    else
+        overlay()->hide();
 }

src/libtomahawk/playlist/playlistview.h

@@ -15,14 +15,14 @@ public:
     explicit PlaylistView( QWidget* parent = 0 );
     ~PlaylistView();
 
-    void setModel( TrackModel* model );
+    virtual void setModel( TrackModel* model );
 
 protected:
     void keyPressEvent( QKeyEvent* event );
-    void paintEvent( QPaintEvent* event );
 
 private slots:
     void onCustomContextMenu( const QPoint& pos );
+    void onTrackCountChanged( unsigned int tracks );
 
     void addItemsToPlaylist();
     void deleteItems();

src/libtomahawk/playlist/trackview.cpp

@@ -251,13 +251,6 @@ TrackView::paintEvent( QPaintEvent* event )
     QTreeView::paintEvent( event );
     QPainter painter( viewport() );
 
-    if ( !proxyModel()->filter().isEmpty() && !proxyModel()->trackCount() &&
-         model()->trackCount() )
-    {
-        m_overlay->setText( tr( "Sorry, your filter '%1' did not match any results." ).arg( proxyModel()->filter() ) );
-        m_overlay->paint( &painter );
-    }
-
     if ( m_dragging )
     {
         // draw drop indicator
@@ -290,7 +283,15 @@ TrackView::onFilterChanged( const QString& )
     if ( selectedIndexes().count() )
         scrollTo( selectedIndexes().at( 0 ), QAbstractItemView::PositionAtCenter );
 
-    reset();
+    if ( !proxyModel()->filter().isEmpty() && !proxyModel()->trackCount() &&
+         model()->trackCount() )
+    {
+        m_overlay->setText( tr( "Sorry, your filter '%1' did not match any results." ).arg( proxyModel()->filter() ) );
+        m_overlay->show();
+    }
+    else
+        if ( model()->trackCount() )
+            m_overlay->hide();
 }
 
 

src/libtomahawk/playlist/trackview.h

@@ -30,7 +30,7 @@ public:
     TrackHeader* header() const { return m_header; }
     OverlayWidget* overlay() const { return m_overlay; }
 
-    void setModel( TrackModel* model );
+    virtual void setModel( TrackModel* model );
 
     QModelIndex contextMenuIndex() const { return m_contextMenuIndex; }
     void setContextMenuIndex( const QModelIndex& idx ) { m_contextMenuIndex = idx; }

src/libtomahawk/widgets/overlaywidget.cpp

@@ -5,17 +5,20 @@
 #include <QPropertyAnimation>
 
 #define CORNER_ROUNDNESS 16.0
-#define FADEIN_DURATION 500
+#define FADING_DURATION 500
 #define FONT_SIZE 18
-#define OPACITY 0.80
+#define OPACITY 0.86
 
 
-OverlayWidget::OverlayWidget( QAbstractItemView* parent )
-    : QWidget() // this is on purpose!
+OverlayWidget::OverlayWidget( QWidget* parent )
+    : QWidget( parent ) // this is on purpose!
+    , m_opacity( 0.00 )
     , m_parent( parent )
 {
     resize( 380, 220 );
     setAttribute( Qt::WA_TranslucentBackground, true );
+
+    setOpacity( m_opacity );
 }
 
 
@@ -28,74 +31,50 @@ void
 OverlayWidget::setOpacity( qreal opacity )
 {
     m_opacity = opacity;
-    m_parent->reset();
+    repaint();
 }
 
 
 void
 OverlayWidget::setText( const QString& text )
 {
-    if ( text == m_text )
-        return;
-
-    if ( isEnabled() )
-    {
-        QPropertyAnimation* animation = new QPropertyAnimation( this, "opacity" );
-        animation->setDuration( FADEIN_DURATION );
-        animation->setStartValue( 0.00 );
-        animation->setEndValue( OPACITY );
-        animation->start();
-    }
-    else
-        m_opacity = OPACITY;
-
     m_text = text;
-    m_pixmap = QPixmap();
-}
-
-
-QPixmap
-OverlayWidget::pixmap()
-{
-    if ( m_pixmap.isNull() )
-    {
-        QPixmap p( contentsRect().size() );
-        p.fill( Qt::transparent );
-        render( &p );
-
-        m_pixmap = p;
-    }
-
-    return m_pixmap;
 }
 
 
 void
-OverlayWidget::paint( QPainter* painter )
+OverlayWidget::show()
 {
-    if ( !isEnabled() )
-        return;
+    QPropertyAnimation* animation = new QPropertyAnimation( this, "opacity" );
+    animation->setDuration( FADING_DURATION );
+    animation->setStartValue( 0.00 );
+    animation->setEndValue( OPACITY );
+    animation->start();
+}
 
-    pixmap(); // cache the image
 
-    QRect center( QPoint( ( painter->viewport().width() - m_pixmap.width() ) / 2,
-                          ( painter->viewport().height() - m_pixmap.height() ) / 2 ), m_pixmap.size() );
-
-    painter->save();
-    painter->setOpacity( m_opacity );
-    painter->drawPixmap( center, m_pixmap );
-    painter->restore();
+void
+OverlayWidget::hide()
+{
+    QPropertyAnimation* animation = new QPropertyAnimation( this, "opacity" );
+    animation->setDuration( FADING_DURATION );
+    animation->setEndValue( 0.00 );
+    animation->start();
 }
 
 
 void
 OverlayWidget::paintEvent( QPaintEvent* event )
 {
+    QPoint center( ( m_parent->width() - width() ) / 2, ( m_parent->height() - height() ) / 2 );
+    move( center );
+
     QPainter p( this );
     QRect r = contentsRect();
 
     p.setBackgroundMode( Qt::TransparentMode );
     p.setRenderHint( QPainter::Antialiasing );
+    p.setOpacity( m_opacity );
 
     QPen pen( palette().dark().color(), .5 );
     p.setPen( pen );

src/libtomahawk/widgets/overlaywidget.h

@@ -12,18 +12,18 @@ Q_OBJECT
 Q_PROPERTY( qreal opacity READ opacity WRITE setOpacity )
 
 public:
-    OverlayWidget( QAbstractItemView* parent );
+    OverlayWidget( QWidget* parent );
     ~OverlayWidget();
 
-    QPixmap pixmap();
-
     qreal opacity() const { return m_opacity; }
     void setOpacity( qreal opacity );
 
     QString text() const { return m_text; }
     void setText( const QString& text );
 
-    void paint( QPainter* painter );
+public slots:
+    void show();
+    void hide();
 
 protected:
 //    void changeEvent( QEvent* e );
@@ -31,10 +31,9 @@ protected:
 
 private:
     QString m_text;
-    QPixmap m_pixmap;
     qreal m_opacity;
 
-    QAbstractItemView* m_parent;
+    QWidget* m_parent;
 };
 
-#endif // WELCOMEWIDGET_H
+#endif // OVERLAYWIDGET_H

src/libtomahawk/widgets/welcomewidget.cpp

@@ -56,6 +56,14 @@ WelcomeWidget::updatePlaylists()
         ui->playlistWidget->addItem( item );
         item->setData( Qt::DisplayRole, playlist->title() );
     }
+
+    if ( !playlists.count() )
+    {
+        ui->playlistWidget->overlay()->setText( tr( "You have not played any playlists yet." ) );
+        ui->playlistWidget->overlay()->show();
+    }
+    else
+        ui->playlistWidget->overlay()->hide();
 }
 
 
@@ -178,3 +186,10 @@ PlaylistDelegate::paint( QPainter* painter, const QStyleOptionViewItem& option,
 
     painter->restore();
 }
+
+
+PlaylistWidget::PlaylistWidget( QWidget* parent )
+    : QListWidget( parent )
+{
+    m_overlay = new OverlayWidget( this );
+}

src/libtomahawk/widgets/welcomewidget.h

@@ -15,6 +15,7 @@
 #include "dllmacro.h"
 
 class PlaylistModel;
+class OverlayWidget;
 
 namespace Ui
 {
@@ -60,6 +61,18 @@ private:
 };
 
 
+class DLLEXPORT PlaylistWidget : public QListWidget
+{
+public:
+    PlaylistWidget( QWidget* parent = 0 );
+
+    OverlayWidget* overlay() const { return m_overlay; }
+
+private:
+    OverlayWidget* m_overlay;
+};
+
+
 class DLLEXPORT WelcomeWidget : public QWidget
 {
 Q_OBJECT

src/libtomahawk/widgets/welcomewidget.ui

@@ -41,7 +41,7 @@
     </widget>
    </item>
    <item>
-    <widget class="QListWidget" name="playlistWidget"/>
+    <widget class="PlaylistWidget" name="playlistWidget"/>
    </item>
    <item>
     <widget class="QLabel" name="label_3">
@@ -66,6 +66,11 @@
    <extends>QTreeView</extends>
    <header>playlist/playlistview.h</header>
   </customwidget>
+  <customwidget>
+   <class>PlaylistWidget</class>
+   <extends>QListWidget</extends>
+   <header>widgets/welcomewidget.h</header>
+  </customwidget>
  </customwidgets>
  <resources/>
  <connections/>