virtualize the way that AutomationController gets strings to display values, so that we can callback through the owner of an AutomationControl, not just rely on the value from the AutomationControl; make pan automation tracks use this to display more audio-centric values

git-svn-id: svn://localhost/ardour2/branches/3.0@8590 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 20 insertions, 0 deletions

diff --git a/libs/ardour/automatable.cc b/libs/ardour/automatable.cc
index 0d24135710..20dc910f61 100644
--- a/libs/ardour/automatable.cc
+++ b/libs/ardour/automatable.cc
@@ -492,3 +492,23 @@ Automatable::clear_controls ()
 	_control_connections.drop_connections ();
 	ControlSet::clear_controls ();
 }
+
+string
+Automatable::value_as_string (boost::shared_ptr<AutomationControl> ac) const
+{
+	std::stringstream s;
+
+        /* this is a the default fallback for this virtual method. Derived Automatables
+           are free to override this to display the values of their parameters/controls
+           in different ways.
+        */
+
+	// Hack to display CC as integer value, rather than double
+	if (ac->parameter().type() == MidiCCAutomation) {
+		s << lrint (ac->get_value());
+	} else {
+		s << std::fixed << std::setprecision(3) << ac->get_value();
+	}
+
+	return s.str ();
+}