Fix non visibility of previously-visible MIDI automation

tracks on session reload.


git-svn-id: svn://localhost/ardour2/branches/3.0@9863 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/automation_time_axis.cc

@@ -20,6 +20,8 @@
 #include <utility>
 #include <gtkmm2ext/barcontroller.h>
 #include <gtkmm2ext/utils.h>
+#include <boost/algorithm/string.hpp>
+#include <boost/lexical_cast.hpp>
 
 #include "pbd/memento_command.h"
 #include "pbd/stacktrace.h"
@@ -1024,3 +1026,52 @@ AutomationTimeAxisView::state_id() const
 				       (int) _parameter.channel());
 	}
 }
+
+/** Given a state id string, see if it is one generated by
+ *  this class.  If so, parse it into its components.
+ *  @param state_id State ID string to parse.
+ *  @param route_id Filled in with the route's ID if the state ID string is parsed.
+ *  @param has_parameter Filled in with true if the state ID has a parameter, otherwise false.
+ *  @param parameter Filled in with the state ID's parameter, if it has one.
+ *  @return true if this is a state ID generated by this class, otherwise false.
+ */
+
+bool
+AutomationTimeAxisView::parse_state_id (
+	string const & state_id,
+	PBD::ID & route_id,
+	bool & has_parameter,
+	Evoral::Parameter & parameter)
+{
+	stringstream s;
+	s << state_id;
+
+	string a, b, c;
+	s >> a >> b >> c;
+
+	if (a != X_("automation")) {
+		return false;
+	}
+
+	route_id = PBD::ID (b);
+
+	if (c.empty ()) {
+		has_parameter = false;
+		return true;
+	}
+
+	has_parameter = true;
+
+	vector<string> p;
+	boost::split (p, c, boost::is_any_of ("/"));
+
+	assert (p.size() == 3);
+
+	parameter = Evoral::Parameter (
+		boost::lexical_cast<int> (p[0]),
+		boost::lexical_cast<int> (p[2]),
+		boost::lexical_cast<int> (p[1])
+		);
+
+	return true;
+}

gtk2_ardour/automation_time_axis.h

@@ -99,6 +99,7 @@ class AutomationTimeAxisView : public TimeAxisView {
 	int  set_state (const XMLNode&, int version);
 
 	std::string state_id() const;
+	static bool parse_state_id (std::string const &, PBD::ID &, bool &, Evoral::Parameter &);
 
 	boost::shared_ptr<ARDOUR::AutomationControl> control()    { return _control; }
 	boost::shared_ptr<AutomationController>      controller() { return _controller; }

gtk2_ardour/axis_view.h

@@ -95,7 +95,7 @@ class AxisView : public virtual Selectable, public PBD::ScopedConnectionList, pu
 	bool _marked_for_display;
 	uint32_t _old_order_key;
 
-  private:
+protected:
 	static GUIObjectState& gui_object_state();
 
 }; /* class AxisView */

gtk2_ardour/gui_object.cc

@@ -169,3 +169,18 @@ GUIObjectState::operator= (const GUIObjectState& other)
 
 	return *this;
 }
+
+/** @return begin iterator into our StringPropertyMap */
+GUIObjectState::StringPropertyMap::const_iterator
+GUIObjectState::begin () const
+{
+	return _property_maps.begin ();
+}
+
+/** @return end iterator into our StringPropertyMap */
+GUIObjectState::StringPropertyMap::const_iterator
+GUIObjectState::end () const
+{
+	return _property_maps.end ();
+}
+

gtk2_ardour/gui_object.h

@@ -32,12 +32,15 @@ class GUIObjectState {
   private:
 	typedef boost::variant<int64_t,std::string> Variant;
 	typedef std::map<std::string,Variant> PropertyMap;
-	typedef std::map<std::string,PropertyMap> StringPropertyMap;
 
   public:
-	GUIObjectState() {}
+	typedef std::map<std::string,PropertyMap> StringPropertyMap;
+	
 	~GUIObjectState();
 
+	StringPropertyMap::const_iterator begin () const;
+	StringPropertyMap::const_iterator end () const;
+
 	XMLNode& get_state () const;
 	int set_state (const XMLNode&);
 

gtk2_ardour/midi_time_axis.cc

@@ -230,6 +230,22 @@ MidiTimeAxisView::set_route (boost::shared_ptr<Route> rt)
 			_percussion_mode_item->set_active (_note_mode == Percussive);
 		}
 	}
+
+	/* Look for any GUI object state nodes that represent automation children that should exist, and create
+	 * the children.
+	 */
+	
+	GUIObjectState& gui_state = gui_object_state ();
+	for (GUIObjectState::StringPropertyMap::const_iterator i = gui_state.begin(); i != gui_state.end(); ++i) {
+		PBD::ID route_id;
+		bool has_parameter;
+		Evoral::Parameter parameter (0, 0, 0);
+
+		bool const p = AutomationTimeAxisView::parse_state_id (i->first, route_id, has_parameter, parameter);
+		if (p && route_id == _route->id () && has_parameter) {
+			create_automation_child (parameter, string_is_affirmative (gui_object_state().get_string (i->first, X_("visible"))));
+		}
+	}
 }
 
 void