From 64458c243088e20b7205d72ebf264819786f41c0 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Sat, 7 Oct 2023 11:01:54 -0600
Subject: [PATCH] prevent meter changes being dragged "through" a BBT marker

might want to do this for tempo drags too
---
 libs/temporal/tempo.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libs/temporal/tempo.cc b/libs/temporal/tempo.cc
index 74b0158114..a93b00b00d 100644
--- a/libs/temporal/tempo.cc
+++ b/libs/temporal/tempo.cc
@@ -1990,6 +1990,11 @@ TempoMap::move_meter (MeterPoint const & mp, timepos_t const & when, bool earlie
 		prev_t = _tempos.begin();
 	}
 
+	if (dynamic_cast<MusicTimePoint*> (&(*prev_t)) || dynamic_cast<MusicTimePoint*> (&(*prev_m))) {
+		/* game over ... cannot drag meter through a BBT Marker */
+		return false;
+	}
+
 	metric = TempoMetric (*prev_t, *prev_m);
 	beats = metric.quarters_at (bbt);