* Fade-in the overlay box.

src/libtomahawk/playlist/trackview.cpp

@@ -24,7 +24,7 @@ TrackView::TrackView( QWidget* parent )
     , m_proxyModel( 0 )
     , m_delegate( 0 )
     , m_header( new TrackHeader( this ) )
-    , m_overlay( new OverlayWidget() )
+    , m_overlay( new OverlayWidget( this ) )
     , m_resizing( false )
 {
     setSortingEnabled( false );
@@ -289,8 +289,6 @@ TrackView::onFilterChanged( const QString& )
 {
     if ( selectedIndexes().count() )
         scrollTo( selectedIndexes().at( 0 ), QAbstractItemView::PositionAtCenter );
-
-    reset();
 }
 
 

src/libtomahawk/widgets/overlaywidget.cpp

@@ -1,10 +1,18 @@
 #include "overlaywidget.h"
 
+#include <QDebug>
 #include <QPainter>
+#include <QPropertyAnimation>
+
+#define CORNER_ROUNDNESS 32.0
+#define FADEIN_DURATION 500
+#define FONT_SIZE 18
+#define OPACITY 0.80
 
 
-OverlayWidget::OverlayWidget()
-    : QWidget()
+OverlayWidget::OverlayWidget( QAbstractItemView* parent )
+    : QWidget() // this is on purpose!
+    , m_parent( parent )
 {
     resize( 380, 220 );
     setAttribute( Qt::WA_TranslucentBackground, true );
@@ -16,12 +24,31 @@ OverlayWidget::~OverlayWidget()
 }
 
 
+void
+OverlayWidget::setOpacity( qreal opacity )
+{
+    m_opacity = opacity;
+    m_parent->reset();
+}
+
+
 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();
 }
@@ -54,7 +81,10 @@ OverlayWidget::paint( QPainter* painter )
     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();
 }
 
 
@@ -69,15 +99,14 @@ OverlayWidget::paintEvent( QPaintEvent* event )
 
     p.setPen( palette().shadow().color() );
     p.setBrush( palette().shadow() );
-    p.setOpacity( 0.7 );
 
-    p.drawRoundedRect( r, 32.0, 32.0 );
+    p.drawRoundedRect( r, CORNER_ROUNDNESS, CORNER_ROUNDNESS );
 
     QTextOption to( Qt::AlignCenter );
     to.setWrapMode( QTextOption::WrapAtWordBoundaryOrAnywhere );
 
     QFont f( font() );
-    f.setPixelSize( 18 );
+    f.setPixelSize( FONT_SIZE );
     f.setBold( true );
 
     p.setFont( f );

src/libtomahawk/widgets/overlaywidget.h

@@ -2,19 +2,24 @@
 #define OVERLAYWIDGET_H
 
 #include <QWidget>
+#include <QAbstractItemView>
 
 #include "dllmacro.h"
 
 class DLLEXPORT OverlayWidget : public QWidget
 {
 Q_OBJECT
+Q_PROPERTY( qreal opacity READ opacity WRITE setOpacity )
 
 public:
-    OverlayWidget();
+    OverlayWidget( QAbstractItemView* 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 );
 
@@ -27,6 +32,9 @@ protected:
 private:
     QString m_text;
     QPixmap m_pixmap;
+    qreal m_opacity;
+
+    QAbstractItemView* m_parent;
 };
 
 #endif // WELCOMEWIDGET_H