Another attempt to fix shadows on Windows.

src/SocialWidget.cpp

@@ -251,7 +251,7 @@ SocialWidget::onGeometryUpdate()
     QPoint position( m_position - QPoint( size().width(), size().height() )
                      + QPoint( 2 + ARROW_HEIGHT * 3, 0 ) );
 #ifdef Q_OS_WIN
-    position.ry() -= 12 + ARROW_HEIGHT;
+    position.ry() -= ARROW_HEIGHT;
 #endif
     if ( position != pos() )
     {

src/libtomahawk/widgets/SourceTreePopupDialog.cpp

@@ -44,7 +44,9 @@ SourceTreePopupDialog::SourceTreePopupDialog()
     , m_label( 0 )
     , m_buttons( 0 )
 {
+#ifndef Q_OS_WIN
     setWindowFlags( Qt::FramelessWindowHint );
+#endif
     setWindowFlags( Qt::Popup );
 
     setAutoFillBackground( false );
@@ -217,10 +219,6 @@ SourceTreePopupDialog::paintEvent( QPaintEvent* event )
     // invalidated.
     SourceTreePopupHelper::clearBackground( this );
 #endif
-#ifdef Q_OS_WIN
-    QRegion bubble = QRegion( outline.toFillPolygon().toPolygon(), Qt::WindingFill );
-    setMask( bubble );
-#endif
 }