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

gtk2_ardour/automation_controller.cc

@@ -19,6 +19,7 @@
 */
 
 #include <iomanip>
+#include <cmath>
 
 #include "pbd/error.h"
 
@@ -40,10 +41,10 @@
 using namespace ARDOUR;
 using namespace Gtk;
 
-
+AutomationController::AutomationController(boost::shared_ptr<Automatable> owner, boost::shared_ptr<AutomationControl> ac, Adjustment* adj)
-AutomationController::AutomationController(boost::shared_ptr<AutomationControl> ac, Adjustment* adj)
 	: BarController (*adj, ac)
 	, _ignore_change(false)
+        , _owner (owner)
 	, _controllable(ac)
 	, _adjustment(adj)
 {
@@ -80,30 +81,18 @@ AutomationController::create(
 	} else {
 		assert(ac->parameter() == param);
 	}
-	return boost::shared_ptr<AutomationController>(new AutomationController(ac, adjustment));
+	return boost::shared_ptr<AutomationController>(new AutomationController(parent, ac, adjustment));
 }
 
 std::string
 AutomationController::get_label (int&)
 {
-	std::stringstream s;
+        return _owner->value_as_string (_controllable);
-
-	// Hack to display CC rounded to int
-	if (_controllable->parameter().type() == MidiCCAutomation) {
-		s << (int)_controllable->get_value();
-	} else {
-		s << std::fixed << std::setprecision(3) << _controllable->get_value();
-	}
-
-	return s.str ();
 }
 
 void
 AutomationController::display_effective_value()
 {
-	//if ( ! _controllable->list()->automation_playback())
-	//	return;
-
 	float value = _controllable->get_value();
 
 	if (_adjustment->get_value() != value) {

gtk2_ardour/automation_controller.h

@@ -54,7 +54,7 @@ public:
 	void stop_updating ();
 
 private:
-	AutomationController (boost::shared_ptr<ARDOUR::AutomationControl> ac, Gtk::Adjustment* adj);
+	AutomationController (boost::shared_ptr<ARDOUR::Automatable> parent, boost::shared_ptr<ARDOUR::AutomationControl> ac, Gtk::Adjustment* adj);
 	std::string get_label (int&);
 
 	void start_touch();
@@ -64,6 +64,7 @@ private:
 	void automation_state_changed();
 
 	bool                                         _ignore_change;
+        boost::shared_ptr<ARDOUR::Automatable>       _owner;
 	boost::shared_ptr<ARDOUR::AutomationControl> _controllable;
 	Gtk::Adjustment*                             _adjustment;
 	sigc::connection                             _screen_update_connection;

gtk2_ardour/automation_time_axis.cc

@@ -148,6 +148,7 @@ AutomationTimeAxisView::AutomationTimeAxisView (Session* s, boost::shared_ptr<Ro
 
 	name_label.set_text (shortpname);
 	name_label.set_alignment (Gtk::ALIGN_CENTER, Gtk::ALIGN_CENTER);
+        name_label.set_name (X_("TrackParameterName"));
 
 	if (nomparent.length()) {
 
@@ -161,7 +162,6 @@ AutomationTimeAxisView::AutomationTimeAxisView (Session* s, boost::shared_ptr<Ro
 		plugname = new Label (pname);
 		plugname->set_name (X_("TrackPlugName"));
 		plugname->show();
-		name_label.set_name (X_("TrackParameterName"));
 		controls_table.remove (name_hbox);
 		controls_table.attach (*plugname, 1, 5, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
 		plugname_packed = true;

libs/ardour/ardour/automatable.h

@@ -63,6 +63,7 @@ public:
 	virtual void transport_stopped (framepos_t now);
 
 	virtual std::string describe_parameter(Evoral::Parameter param);
+        virtual std::string value_as_string (boost::shared_ptr<AutomationControl>) const;
 
 	AutoState get_parameter_automation_state (Evoral::Parameter param);
 	virtual void set_parameter_automation_state (Evoral::Parameter param, AutoState);

libs/ardour/ardour/pannable.h

@@ -65,6 +65,8 @@ struct Pannable : public PBD::Stateful, public Automatable, public SessionHandle
                 return ((_auto_state & Write) || ((_auto_state & Touch) && touching()));
         }
 
+        std::string value_as_string (boost::shared_ptr<AutomationControl>) const;
+
 	void start_touch (double when);
 	void stop_touch (bool mark, double when);
 	bool touching() const { return g_atomic_int_get (&_touching); }

libs/ardour/ardour/panner.h

@@ -93,6 +93,7 @@ class Panner : public PBD::Stateful, public PBD::ScopedConnectionList
 
 	virtual std::set<Evoral::Parameter> what_can_be_automated() const;
         virtual std::string describe_parameter (Evoral::Parameter);
+        virtual std::string value_as_string (boost::shared_ptr<AutomationControl>) const;
 
 	bool touching() const;
 

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 ();
+}

libs/ardour/pannable.cc

@@ -23,9 +23,11 @@
 #include "ardour/automation_control.h"
 #include "ardour/automation_list.h"
 #include "ardour/pannable.h"
+#include "ardour/panner.h"
 #include "ardour/pan_controllable.h"
 #include "ardour/session.h"
 
+using namespace std;
 using namespace PBD;
 using namespace ARDOUR;
 
@@ -245,6 +247,12 @@ Pannable::set_state (const XMLNode& root, int /*version - not used*/)
         return 0;
 }
 
+string 
+Pannable::value_as_string (boost::shared_ptr<AutomationControl> ac) const
+{
+        if (_panner) {
+                return _panner->value_as_string (ac);
+        } 
 
-
+        return Automatable::value_as_string (ac);
-        
+}

libs/ardour/panner.cc

@@ -161,3 +161,9 @@ Panner::describe_parameter (Evoral::Parameter p)
 {
         return _pannable->describe_parameter (p);
 }
+
+string 
+Panner::value_as_string (boost::shared_ptr<AutomationControl> ac) const
+{
+        return _pannable->value_as_string (ac);
+}

libs/gtkmm2ext/gtkmm2ext/barcontroller.h

@@ -82,6 +82,8 @@ class BarController : public Gtk::Frame
 	Gtk::SpinButton     spinner;
 	bool                use_parent;
 	bool                logarithmic;
+        sigc::slot<std::string> _label_slot;
+        bool                    _use_slot;
 
 	virtual std::string get_label (int& /*x*/) {
 		return "";

libs/panners/1in2out/panner_1in2out.cc

@@ -362,3 +362,27 @@ Panner1in2out::describe_parameter (Evoral::Parameter p)
                 return _pannable->describe_parameter (p);
         }
 }
+
+string 
+Panner1in2out::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:
+                /* We show the position of the center of the image relative to the left & right.
+                   This is expressed as a pair of percentage values that ranges from (100,0) 
+                   (hard left) through (50,50) (hard center) to (0,100) (hard right).
+                   
+                   This is pretty wierd, but its the way audio engineers expect it. Just remember that
+                   the center of the USA isn't Kansas, its (50LA, 50NY) and it will all make sense.
+                */
+                
+                return string_compose (_("L:%1 R:%2"), (int) rint (100.0 * (1.0 - val)),
+                                       (int) rint (100.0 * val));
+                
+        default:
+                return _pannable->value_as_string (ac);
+        }
+}

libs/panners/1in2out/panner_1in2out.h

@@ -60,6 +60,7 @@ class Panner1in2out : public Panner
         static Panner* factory (boost::shared_ptr<Pannable>, Speakers&);
 
         std::string describe_parameter (Evoral::Parameter);
+        std::string value_as_string (boost::shared_ptr<AutomationControl>) const;
 
 	XMLNode& state (bool full_state); 
 	XMLNode& get_state (void); 

libs/panners/2in2out/panner_2in2out.cc

@@ -473,3 +473,30 @@ Panner2in2out::describe_parameter (Evoral::Parameter p)
                 return _pannable->describe_parameter (p);
         }
 }
+
+string 
+Panner2in2out::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:
+                /* We show the position of the center of the image relative to the left & right.
+                   This is expressed as a pair of percentage values that ranges from (100,0) 
+                   (hard left) through (50,50) (hard center) to (0,100) (hard right).
+                   
+                   This is pretty wierd, but its the way audio engineers expect it. Just remember that
+                   the center of the USA isn't Kansas, its (50LA, 50NY) and it will all make sense.
+                */
+                
+                return string_compose (_("L:%1 R:%2"), (int) rint (100.0 * (1.0 - val)),
+                                       (int) rint (100.0 * val));
+                
+        case PanWidthAutomation:
+                return string_compose (_("Width: %1%%"), (int) floor (100.0 * val));
+                
+        default:
+                return _pannable->value_as_string (ac);
+        }
+}

libs/panners/2in2out/panner_2in2out.h

@@ -60,6 +60,7 @@ class Panner2in2out : public Panner
 	static Panner* factory (boost::shared_ptr<Pannable>, Speakers&);
 
         std::string describe_parameter (Evoral::Parameter);
+        std::string value_as_string (boost::shared_ptr<AutomationControl>) const;
 
 	XMLNode& state (bool full_state); 
 	XMLNode& get_state (void); 

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);
+        }
+}

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 ();