From edfca6849443448794dfe40639f40e9e212556d2 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 9 Jul 2020 22:33:09 +0200
Subject: [PATCH] Auto write-activate automation in latch mode

This allows to use of control-surfaces without touch-sensitivity
or mouse-wheel to write automation on demand (until transport stop).
---
 libs/ardour/automation_control.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libs/ardour/automation_control.cc b/libs/ardour/automation_control.cc
index 687f03f4f0..67e4bd9d6d 100644
--- a/libs/ardour/automation_control.cc
+++ b/libs/ardour/automation_control.cc
@@ -128,6 +128,10 @@ AutomationControl::set_value (double val, PBD::Controllable::GroupControlDisposi
 		return;
 	}
 
+	if (_list && !touching () && alist()->automation_state() == Latch && _session.transport_rolling ()) {
+		start_touch (_session.transport_sample ());
+	}
+
 	/* enforce strict double/boolean value mapping */
 
 	if (_desc.toggled) {