Helper to extract all AbstractGraphicsMediaItem at a given point

src/gui/TracksView.cpp

@@ -304,10 +304,9 @@ void TracksView::mouseMoveEvent( QMouseEvent* event )
 
 void TracksView::mousePressEvent( QMouseEvent* event )
 {
+    QList<AbstractGraphicsMediaItem*> mediaCollisionList = mediaItems( event->pos() );
 
-    QList<QGraphicsItem*> collisionList = items( event->pos() );
-
-    if ( event->modifiers() == Qt::ControlModifier && collisionList.count() == 0 )
+    if ( event->modifiers() == Qt::ControlModifier && mediaCollisionList.count() == 0 )
     {
         setDragMode( QGraphicsView::ScrollHandDrag );
         QGraphicsView::mousePressEvent( event );
@@ -351,6 +350,20 @@ void TracksView::wheelEvent( QWheelEvent* event )
     }
 }
 
+QList<AbstractGraphicsMediaItem*> TracksView::mediaItems( const QPoint& pos )
+{
+    QList<QGraphicsItem*> collisionList = items( pos );
+    QList<AbstractGraphicsMediaItem*> mediaCollisionList;
+    for ( int i = 0; i < collisionList.size(); ++i )
+    {
+        AbstractGraphicsMediaItem* item =
+                dynamic_cast<AbstractGraphicsMediaItem*>( collisionList.at( i ) );
+        if ( item )
+            mediaCollisionList.append( item );
+    }
+    return mediaCollisionList;
+}
+
 void TracksView::setCursorPos( int pos )
 {
     if ( pos < 0 ) pos = 0;
@@ -393,6 +406,7 @@ void TracksView::ensureCursorVisible()
 
 void TracksView::updateDuration()
 {
+    //TODO this should use a variant of mediaItems( const QPoint& )
     QList<QGraphicsItem*> sceneItems = m_scene->items();
 
     int projectDuration = 0;

src/gui/TracksView.h

@@ -82,6 +82,7 @@ public:
     int cursorPos();
     GraphicsCursorItem* tracksCursor() const { return m_cursorLine; }
     void setScale( double scaleFactor );
+    QList<AbstractGraphicsMediaItem*> mediaItems( const QPoint& pos );
 
 protected:
     virtual void            resizeEvent( QResizeEvent* event );