insert time operation

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@3203 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 18 insertions, 2 deletions

diff --git a/gtk2_ardour/audio_clock.cc b/gtk2_ardour/audio_clock.cc
index b00a4c9214..bbdebf097d 100644
--- a/gtk2_ardour/audio_clock.cc
+++ b/gtk2_ardour/audio_clock.cc
@@ -83,7 +83,8 @@ AudioClock::AudioClock (std::string clock_name, bool transient, std::string widg
 	key_entry_state = 0;
 	ops_menu = 0;
 	dragging = false;
-	
+	bbt_reference_time = -1;
+
 	if (with_info) {
 		frames_upper_info_label = manage (new Label);
 		frames_lower_info_label = manage (new Label);
@@ -641,7 +642,16 @@ AudioClock::set_bbt (nframes_t when, bool force)
 	ticks_label.set_text (buf);
 	
 	if (bbt_upper_info_label) {
-		TempoMap::Metric m (session->tempo_map().metric_at (when));
+		nframes64_t pos;
+
+		if (bbt_reference_time < 0) {
+			pos = when;
+		} else {
+			pos = bbt_reference_time;
+		}
+
+		TempoMap::Metric m (session->tempo_map().metric_at (pos));
+
 		sprintf (buf, "%-5.2f", m.tempo().beats_per_minute());
 		if (bbt_lower_info_label->get_text() != buf) {
 			bbt_lower_info_label->set_text (buf);
@@ -1995,3 +2005,9 @@ AudioClock::set_size_requests ()
 		
 	}
 }
+
+void
+AudioClock::set_bbt_reference (nframes64_t pos)
+{
+	bbt_reference_time = pos;
+}