* Show info buttons for tracks in TreeViews.

src/libtomahawk/playlist/TreeView.cpp

@@ -60,6 +60,7 @@ TreeView::TreeView( QWidget* parent )
     setAttribute( Qt::WA_MacShowFocusRect, 0 );
 
     setContentsMargins( 0, 0, 0, 0 );
+    setMouseTracking( true );
     setAlternatingRowColors( true );
     setDragEnabled( true );
     setDropIndicatorShown( false );
@@ -427,6 +428,96 @@ TreeView::jumpToCurrentTrack()
 }
 
 
+void
+TreeView::updateHoverIndex( const QPoint& pos )
+{
+    QModelIndex idx = indexAt( pos );
+
+    if ( idx != m_hoveredIndex )
+    {
+        m_hoveredIndex = idx;
+        repaint();
+    }
+
+    if ( !m_model || m_model->style() != PlayableModel::Collection )
+        return;
+
+    PlayableItem* item = proxyModel()->itemFromIndex( proxyModel()->mapToSource( idx ) );
+    if ( idx.column() == 0 && !item->query().isNull() )
+    {
+        if ( pos.x() > header()->sectionViewportPosition( idx.column() ) + header()->sectionSize( idx.column() ) - 16 &&
+             pos.x() < header()->sectionViewportPosition( idx.column() ) + header()->sectionSize( idx.column() ) )
+        {
+            setCursor( Qt::PointingHandCursor );
+            return;
+        }
+    }
+
+    if ( cursor().shape() != Qt::ArrowCursor )
+        setCursor( Qt::ArrowCursor );
+}
+
+
+void
+TreeView::wheelEvent( QWheelEvent* event )
+{
+    QTreeView::wheelEvent( event );
+
+    if ( m_hoveredIndex.isValid() )
+    {
+        m_hoveredIndex = QModelIndex();
+        repaint();
+    }
+}
+
+
+void
+TreeView::leaveEvent( QEvent* event )
+{
+    QTreeView::leaveEvent( event );
+    updateHoverIndex( QPoint( -1, -1 ) );
+}
+
+
+void
+TreeView::mouseMoveEvent( QMouseEvent* event )
+{
+    QTreeView::mouseMoveEvent( event );
+    updateHoverIndex( event->pos() );
+}
+
+
+void
+TreeView::mousePressEvent( QMouseEvent* event )
+{
+    QTreeView::mousePressEvent( event );
+
+    if ( !m_model || m_model->style() != PlayableModel::Collection )
+        return;
+
+    QModelIndex idx = indexAt( event->pos() );
+    if ( event->pos().x() > header()->sectionViewportPosition( idx.column() ) + header()->sectionSize( idx.column() ) - 16 &&
+         event->pos().x() < header()->sectionViewportPosition( idx.column() ) + header()->sectionSize( idx.column() ) )
+    {
+        PlayableItem* item = proxyModel()->itemFromIndex( proxyModel()->mapToSource( idx ) );
+        if ( item->query().isNull() )
+            return;
+
+        switch ( idx.column() )
+        {
+            case 0:
+            {
+                ViewManager::instance()->show( item->query()->displayQuery() );
+                break;
+            }
+
+            default:
+                break;
+        }
+    }
+}
+
+
 QString
 TreeView::guid() const
 {

src/libtomahawk/playlist/TreeView.h

@@ -78,6 +78,8 @@ public:
 
     virtual bool jumpToCurrentTrack();
 
+    QModelIndex hoveredIndex() const { return m_hoveredIndex; }
+
     bool updatesContextView() const { return m_updateContextView; }
     void setUpdatesContextView( bool b ) { m_updateContextView = b; }
 
@@ -92,6 +94,10 @@ protected:
     virtual void resizeEvent( QResizeEvent* event );
 
     virtual void keyPressEvent( QKeyEvent* event );
+    void wheelEvent( QWheelEvent* event );
+    void mouseMoveEvent( QMouseEvent* event );
+    void mousePressEvent( QMouseEvent* event );
+    void leaveEvent( QEvent* event );
 
 protected slots:
     virtual void currentChanged( const QModelIndex& current, const QModelIndex& previous );
@@ -106,6 +112,8 @@ private slots:
     void onMenuTriggered( int action );
 
 private:
+    void updateHoverIndex( const QPoint& pos );
+
     ViewHeader* m_header;
     OverlayWidget* m_overlay;
     TreeModel* m_model;
@@ -114,6 +122,7 @@ private:
 
     bool m_updateContextView;
 
+    QModelIndex m_hoveredIndex;
     QModelIndex m_contextMenuIndex;
     Tomahawk::ContextMenu* m_contextMenu;