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

2 files changed, 19 insertions, 0 deletions

diff --git a/libs/panners/vbap/vbap.cc b/libs/panners/vbap/vbap.cc
index 6088a2d0d6..239a253f19 100644
--- a/libs/panners/vbap/vbap.cc
+++ b/libs/panners/vbap/vbap.cc
@@ -313,3 +313,21 @@ VBAPanner::describe_parameter (Evoral::Parameter p)
                 return _pannable->describe_parameter (p);
         }
 }
+
+string 
+VBAPanner::value_as_string (boost::shared_ptr<AutomationControl> ac) const
+{
+        /* DO NOT USE LocaleGuard HERE */
+        double val = ac->get_value();
+
+        switch (ac->parameter().type()) {
+        case PanAzimuthAutomation: /* direction */
+                return string_compose (_("%1"), val * 360.0);
+                
+        case PanWidthAutomation: /* diffusion */
+                return string_compose (_("%1%%"), (int) floor (100.0 * fabs(val)));
+                
+        default:
+                return _pannable->value_as_string (ac);
+        }
+}
diff --git a/libs/panners/vbap/vbap.h b/libs/panners/vbap/vbap.h
index 2b80b032cb..cf010cc331 100644
--- a/libs/panners/vbap/vbap.h
+++ b/libs/panners/vbap/vbap.h
@@ -53,6 +53,7 @@ public:
 	void set_azimuth_elevation (double azimuth, double elevation);
 
         std::string describe_parameter (Evoral::Parameter);
+        std::string value_as_string (boost::shared_ptr<AutomationControl>) const;
 
 	XMLNode& state (bool full_state);
 	XMLNode& get_state ();