Support cut/copy/paste of several regions and lines at once.

The idea here is to do the reasonable thing, and copy objects of some
type (e.g. MIDI region, gain line) to tracks with a matching type.  The user
can override this with a track selection, which will be used straight-up.

Lost: ability to copy/paste lines across types, e.g. gain to pan.  This is
often questionable, but sometimes useful, so we will need to implement some
sort of "greedy mode" to make it possible.  Implementation simple, but not sure
what to do.  Perhaps this should only be possible if one automation track is
explicitly (i.e. via track selection) involved, and the types are at least
compatible-ish?

1 files changed, 15 insertions, 1 deletions

diff --git a/gtk2_ardour/time_axis_view.h b/gtk2_ardour/time_axis_view.h
index 3dc440b54c..c46d23ae58 100644
--- a/gtk2_ardour/time_axis_view.h
+++ b/gtk2_ardour/time_axis_view.h
@@ -78,6 +78,7 @@ class RegionView;
 class GhostRegion;
 class StreamView;
 class ArdourDialog;
+class ItemCounts;
 
 /** Abstract base class for time-axis views (horizontal editor 'strips')
  *
@@ -165,7 +166,20 @@ class TimeAxisView : public virtual AxisView
 	/* editing operations */
 
 	virtual void cut_copy_clear (Selection&, Editing::CutCopyOp) {}
-	virtual bool paste (ARDOUR::framepos_t, unsigned /*paste_count*/, float /*times*/, Selection&, size_t /*nth*/) { return false; }
+
+	/** Paste a selection.
+	 *  @param pos Position to paste to (session frames).
+	 *  @param paste_count Number of pastes to the same location previously (multi-paste).
+	 *  @param times Number of times to paste.
+	 *  @param selection Selection to paste.
+	 *  @param counts Count of consumed selection items (used to find the
+	 *  correct item to paste here, then updated for the next pastee).
+	 */
+	virtual bool paste (ARDOUR::framepos_t pos,
+	                    unsigned           paste_count,
+	                    float              times,
+	                    const Selection&   selection,
+	                    ItemCounts&        counts) { return false; }
 
 	virtual void set_selected_regionviews (RegionSelection&) {}
 	virtual void set_selected_points (PointSelection&) {}