control input to route keyboard to different ports

main.cpp

@@ -44,6 +44,7 @@ public:
     
     RingBuffer<ThreadMessage> thread_messages;
    
+    Jack::MIDIPort *midi_inp;
     Jack::MIDIPort *midi_omni_out;
     typedef std::vector<Jack::MIDIPort *> MIDIPortArray;
 
@@ -60,6 +61,8 @@ public:
         enable_sync = false;
         waiting_for_sync = false;
         defunct = false;
+        midi_inp = new Jack::MIDIPort(
+            *this, "control", Jack::MIDIPort::IsInput);
         midi_omni_out = new Jack::MIDIPort(
             *this, "omni", Jack::MIDIPort::IsOutput);
         for (int i = 0; i < MaxPorts; ++i) {
@@ -76,6 +79,7 @@ public:
         }
         midi_ports.clear();
         delete midi_omni_out;
+        delete midi_inp;
     }
     
     void play() {
@@ -223,12 +227,21 @@ public:
                     break;
             }
         }
-
+        
         midi_omni_out->clear_buffer();
         for (MIDIPortArray::iterator iter = midi_ports.begin();
             iter != midi_ports.end(); ++iter) {
             (*iter)->clear_buffer();
         }
+        
+        for (Jack::NFrames i = 0; i < midi_inp->get_event_count(); ++i) {
+            MIDI::Message ctrl_msg;
+            if (midi_inp->get_event(ctrl_msg, NULL, i)) {
+                midi_omni_out->write_event(0, ctrl_msg);
+                midi_ports[model->midi_control_port]->write_event(0, ctrl_msg);
+            }
+        }
+
         process_messages((int)size);
     }
     

model.cpp

@@ -426,6 +426,7 @@ Model::Model() {
 
 void Model::reset() {
     end_cue = 0;
+    midi_control_port = 0;
     beats_per_minute = 120;
     frames_per_beat = 4;
     beats_per_bar = 4;

model.hpp

@@ -271,6 +271,9 @@ public:
     int beats_per_bar;
     // how many beats are in one minute
     int beats_per_minute;
+    
+    // what port to use for the midi control
+    int midi_control_port;
 
     void reset();
     

trackview.cpp

@@ -18,8 +18,15 @@ TrackBar::TrackBar(int index, TrackView &view) {
     set_size_request(-1, TrackHeight);
     
     name.set_alignment(0,0.5);
-    pack_start(name, true, true);
     view.group_names->add_widget(name);
+
+    name_eventbox.add(name);
+    name_eventbox.set_visible_window(false);
+    name_eventbox.set_events(Gdk::BUTTON_PRESS_MASK);
+    name_eventbox.signal_button_press_event().connect(
+        sigc::mem_fun(*this, &TrackBar::on_name_button_press_event));
+
+    pack_start(name_eventbox, true, true);
     
     for (int i = 0; i < 16; ++i) {
         char buffer[64];
@@ -83,6 +90,16 @@ void TrackBar::on_port(int port) {
     update();
 }
 
+bool TrackBar::on_name_button_press_event(GdkEventButton *event) {
+    if ((event->type == GDK_BUTTON_PRESS) &&
+        (event->button == 1)) {
+        Track &track = model->tracks[index];
+        model->midi_control_port = track.midi_port;
+        return true;
+    }
+    return false;
+}
+
 bool TrackBar::on_channel_button_press_event(GdkEventButton *event) {
     if ((event->type == GDK_BUTTON_PRESS) &&
         (event->button == 1)) {

trackview.hpp

@@ -20,6 +20,7 @@ public:
     ~TrackBar();
     
     Gtk::Label name;
+    Gtk::EventBox name_eventbox;
     
     Gtk::EventBox channel_eventbox;
     Gtk::Menu channel_menu;
@@ -38,6 +39,7 @@ public:
     void update();
     bool on_channel_button_press_event(GdkEventButton *event);
     bool on_port_button_press_event(GdkEventButton *event);
+    bool on_name_button_press_event(GdkEventButton *event);
 
     void on_channel(int channel);
     void on_port(int port);