X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=gtk2_ardour%2Fautomation_selectable.h;h=7104f6adf414f83aca5542ac88ef455ab5246ca2;hb=b1c3a224983a6b0cc5c5bb4b042d15f1d67ae5b3;hp=851da8bf7900b0c25d7fd0a8b3c1f1a11a6b5c14;hpb=bb9cc45cd22af67ac275a5e73accbe14fee664d8;p=ardour.git

diff --git a/gtk2_ardour/automation_selectable.h b/gtk2_ardour/automation_selectable.h
index 851da8bf79..7104f6adf4 100644
--- a/gtk2_ardour/automation_selectable.h
+++ b/gtk2_ardour/automation_selectable.h
@@ -25,23 +25,29 @@
 
 class TimeAxisView;
 
+/** A selected automation point, expressed as a rectangle on a track (so that x coordinates
+ *  are frames and y coordinates are a fraction of track height).  This representation falls
+ *  between the visible GUI control points and the back-end "actual" automation points,
+ *  some of which may not be visible; it is not trivial to convert from one of these to the other,
+ *  so the AutomationSelectable is a kind of "best and worst of both worlds".
+ */
 struct AutomationSelectable : public Selectable
 {
     nframes_t start;
     nframes_t end;
     double low_fract;
     double high_fract;
-    TimeAxisView& track;
+    TimeAxisView* track; // ref would be better, but ARDOUR::SessionHandlePtr is non-assignable
 
-    AutomationSelectable (nframes_t s, nframes_t e, double l, double h, TimeAxisView& atv)
+    AutomationSelectable (nframes_t s, nframes_t e, double l, double h, TimeAxisView* atv)
 	    : start (s), end (e), low_fract (l), high_fract (h), track (atv) {}
 
     bool operator== (const AutomationSelectable& other) {
 	    return start == other.start &&
-		    end == other.end &&
-		    low_fract == other.low_fract &&
-		    high_fract == other.high_fract &&
-		    &track == &other.track;
+	    end == other.end &&
+	    low_fract == other.low_fract &&
+	    high_fract == other.high_fract &&
+	    track == other.track;
     }
 };