Remove unused concept of user' values. Make user_to_ui

and ui_to_user virtual members of PBD::Controllable.


git-svn-id: svn://localhost/ardour2/branches/3.0@11286 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 11 insertions, 4 deletions

diff --git a/libs/pbd/pbd/controllable.h b/libs/pbd/pbd/controllable.h
index 9c059e9401..f61a375ba7 100644
--- a/libs/pbd/pbd/controllable.h
+++ b/libs/pbd/pbd/controllable.h
@@ -43,13 +43,12 @@ class Controllable : public PBD::StatefulDestructible {
 	Controllable (const std::string& name, Flag f = Flag (0));
 	virtual ~Controllable() { Destroyed (this); }
 
-	/* We express Controllable values in one of three ways:
-	 * 1. `user' --- as presented to the user (e.g. dB, Hz etc.)
-	 * 2. `UI' --- as used in some cases for the internal representation
+	/* We express Controllable values in one of two ways:
+	 * 1. `UI' --- as used in some cases for the internal representation
 	 *    of the UI.  This may be the same as `user', or may be something
 	 *    like the natural log of frequency in order that sliders operate
 	 *    in a logarithmic fashion.
-	 * 3. `plugin' --- as passed to a plugin.
+	 * 2. `user' --- as passed to a plugin, and presented to the user.
 	 */
 
 	/** Set `user' value */
@@ -57,6 +56,14 @@ class Controllable : public PBD::StatefulDestructible {
 	/** @return `user' value */
 	virtual double get_value (void) const = 0;
 
+	virtual double user_to_ui (double v) const {
+		return v;
+	}
+
+	virtual double ui_to_user (double v) const {
+		return v;
+	}
+
 	PBD::Signal0<void> LearningFinished;
 	static PBD::Signal3<void,PBD::Controllable*,int,int> CreateBinding;
 	static PBD::Signal1<void,PBD::Controllable*> DeleteBinding;