+#ifdef WITH_VIDEOTIMELINE
+/** Container for details about audio regions being dragged along with video */
+class AVDraggingView
+{
+public:
+ AVDraggingView (RegionView *);
+
+ RegionView* view; ///< the view
+ framepos_t initial_position; ///< initial position of the region
+};
+
+/** Drag of video offset */
+class VideoTimeLineDrag : public Drag
+ //TODO , public sigc::trackable
+{
+public:
+ VideoTimeLineDrag (Editor *e, ArdourCanvas::Item *i);
+
+ void motion (GdkEvent *, bool);
+ void finished (GdkEvent *, bool);
+ void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
+
+ bool y_movement_matters () const {
+ return false;
+ }
+
+ bool allow_vertical_autoscroll () const {
+ return false;
+ }
+
+ void aborted (bool);
+
+protected:
+ std::list<AVDraggingView> _views; ///< information about all audio that are being dragged along
+
+private:
+ ARDOUR::frameoffset_t _startdrag_video_offset;
+ ARDOUR::frameoffset_t _max_backwards_drag;
+};
+#endif
+