enough with umpteen "i18n.h" files. Consolidate on pbd/i18n.h
[ardour.git] / gtk2_ardour / mixer_strip.cc
index adb18dec24bdc9d931d83319a531eb7782cb2d92..b5ae269c7fb65864bd16f60df36bd108496bf0ab 100644 (file)
@@ -38,6 +38,7 @@
 #include "ardour/audio_track.h"
 #include "ardour/audioengine.h"
 #include "ardour/internal_send.h"
+#include "ardour/io.h"
 #include "ardour/meter.h"
 #include "ardour/midi_track.h"
 #include "ardour/pannable.h"
@@ -52,6 +53,8 @@
 #include "ardour/session.h"
 #include "ardour/types.h"
 #include "ardour/user_bundle.h"
+#include "ardour/vca.h"
+#include "ardour/vca_manager.h"
 
 #include "ardour_window.h"
 #include "mixer_strip.h"
@@ -68,7 +71,7 @@
 #include "tooltips.h"
 #include "ui_config.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 using namespace ARDOUR;
 using namespace ARDOUR_UI_UTILS;
@@ -79,11 +82,10 @@ using namespace std;
 using namespace ArdourMeter;
 
 MixerStrip* MixerStrip::_entered_mixer_strip;
-
 PBD::Signal1<void,MixerStrip*> MixerStrip::CatchDeletion;
 
 MixerStrip::MixerStrip (Mixer_UI& mx, Session* sess, bool in_mixer)
-       : AxisView(sess)
+       : SessionHandlePtr (sess)
        , RouteUI (sess)
        , _mixer(mx)
        , _mixer_owned (in_mixer)
@@ -98,9 +100,11 @@ MixerStrip::MixerStrip (Mixer_UI& mx, Session* sess, bool in_mixer)
        , meter_point_button (_("pre"))
        , monitor_section_button (0)
        , midi_input_enable_button (0)
+       , _plugin_insert_cnt (0)
        , _comment_button (_("Comments"))
        , trim_control (ArdourKnob::default_elements, ArdourKnob::Flags (ArdourKnob::Detent | ArdourKnob::ArcToZero))
        , _visibility (X_("mixer-element-visibility"))
+       , control_slave_ui (sess)
 {
        init ();
 
@@ -114,7 +118,7 @@ MixerStrip::MixerStrip (Mixer_UI& mx, Session* sess, bool in_mixer)
 }
 
 MixerStrip::MixerStrip (Mixer_UI& mx, Session* sess, boost::shared_ptr<Route> rt, bool in_mixer)
-       : AxisView(sess)
+       : SessionHandlePtr (sess)
        , RouteUI (sess)
        , _mixer(mx)
        , _mixer_owned (in_mixer)
@@ -132,6 +136,7 @@ MixerStrip::MixerStrip (Mixer_UI& mx, Session* sess, boost::shared_ptr<Route> rt
        , _comment_button (_("Comments"))
        , trim_control (ArdourKnob::default_elements, ArdourKnob::Flags (ArdourKnob::Detent | ArdourKnob::ArcToZero))
        , _visibility (X_("mixer-element-visibility"))
+       , control_slave_ui (sess)
 {
        init ();
        set_route (rt);
@@ -158,9 +163,11 @@ MixerStrip::init ()
        }
 
        width_button.set_icon (ArdourIcon::StripWidth);
+       hide_button.set_tweaks (ArdourButton::Square);
        set_tooltip (width_button, t);
 
        hide_button.set_icon (ArdourIcon::CloseCross);
+       hide_button.set_tweaks (ArdourButton::Square);
        set_tooltip (&hide_button, _("Hide this mixer strip"));
 
        input_button_box.set_spacing(2);
@@ -257,7 +264,9 @@ MixerStrip::init ()
        group_button.set_name ("mixer strip button");
 
        _comment_button.set_name (X_("mixer strip button"));
+       _comment_button.set_text_ellipsize (Pango::ELLIPSIZE_END);
        _comment_button.signal_clicked.connect (sigc::mem_fun (*this, &RouteUI::toggle_comment_editor));
+       _comment_button.signal_size_allocate().connect (sigc::mem_fun (*this, &MixerStrip::comment_button_resized));
 
        // TODO implement ArdourKnob::on_size_request properly
 #define PX_SCALE(px) std::max((float)px, rintf((float)px * UIConfiguration::instance().get_ui_scale()))
@@ -277,7 +286,6 @@ MixerStrip::init ()
        width_button.signal_button_press_event().connect (sigc::mem_fun(*this, &MixerStrip::width_button_pressed), false);
        hide_button.signal_clicked.connect (sigc::mem_fun(*this, &MixerStrip::hide_clicked));
 
-//     width_hide_box.set_border_width (1);
        width_hide_box.set_spacing (2);
        width_hide_box.pack_start (width_button, false, true);
        width_hide_box.pack_start (number_label, true, true);
@@ -290,6 +298,7 @@ MixerStrip::init ()
        number_label.set_fixed_colors (0x80808080, 0x80808080);
        number_label.set_alignment (.5, .5);
        number_label.set_fallthrough_to_parent (true);
+       number_label.set_tweaks (ArdourButton::OccasionalText);
 
        global_vpacker.set_spacing (2);
        if (!ARDOUR::Profile->get_trx()) {
@@ -304,6 +313,7 @@ MixerStrip::init ()
        global_vpacker.pack_start (solo_iso_table, Gtk::PACK_SHRINK);
        global_vpacker.pack_start (mute_solo_table, Gtk::PACK_SHRINK);
        global_vpacker.pack_start (gpm, Gtk::PACK_SHRINK);
+       global_vpacker.pack_start (control_slave_ui, Gtk::PACK_SHRINK);
        global_vpacker.pack_start (bottom_button_table, Gtk::PACK_SHRINK);
        if (!ARDOUR::Profile->get_trx()) {
                global_vpacker.pack_start (output_button, Gtk::PACK_SHRINK);
@@ -385,6 +395,7 @@ MixerStrip::init ()
        _visibility.add (&solo_iso_table, X_("SoloIsoLock"), _("Solo Iso / Lock"), false);
        _visibility.add (&output_button, X_("Output"), _("Output"), false);
        _visibility.add (&_comment_button, X_("Comments"), _("Comments"), false);
+       _visibility.add (&control_slave_ui, X_("VCA"), _("VCA Assigns"), false);
 
        parameter_changed (X_("mixer-element-visibility"));
        UIConfiguration::instance().ParameterChanged.connect (sigc::mem_fun (*this, &MixerStrip::parameter_changed));
@@ -437,6 +448,15 @@ MixerStrip::mixer_strip_leave_event (GdkEventCrossing *ev)
        return false;
 }
 
+string
+MixerStrip::name() const
+{
+       if (_route) {
+               return _route->name();
+       }
+       return string();
+}
+
 void
 MixerStrip::set_route (boost::shared_ptr<Route> rt)
 {
@@ -461,6 +481,8 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
 
        RouteUI::set_route (rt);
 
+       control_slave_ui.set_stripable (boost::dynamic_pointer_cast<Stripable> (rt));
+
        /* ProcessorBox needs access to _route so that it can read
           GUI object state.
        */
@@ -583,7 +605,6 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
        if (is_track ()) {
 
                rec_mon_table.attach (*rec_enable_button, 0, 1, 0, ARDOUR::Profile->get_mixbus() ? 1 : 2);
-               rec_enable_button->set_sensitive (_session->writable());
                rec_enable_button->show();
 
                if (ARDOUR::Profile->get_mixbus()) {
@@ -628,7 +649,6 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
        }
 
        _route->comment_changed.connect (route_connections, invalidator (*this), boost::bind (&MixerStrip::setup_comment_button, this), gui_context());
-       _route->PropertyChanged.connect (route_connections, invalidator (*this), boost::bind (&MixerStrip::property_changed, this, _1), gui_context());
 
        set_stuff_from_route ();
 
@@ -639,6 +659,7 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
        name_changed ();
        comment_changed ();
        route_group_changed ();
+       update_track_number_visibility ();
 
        connect_to_pan ();
        panners.setup_pan ();
@@ -932,7 +953,7 @@ MixerStrip::input_press (GdkEventButton *ev)
                return true;
        }
 
-       if (_session->actively_recording() && _route->record_enabled())
+       if (_session->actively_recording() && is_track() && track()->rec_enable_control()->get_value())
                return true;
 
        switch (ev->button) {
@@ -1039,9 +1060,9 @@ MixerStrip::maybe_add_bundle_to_input_menu (boost::shared_ptr<Bundle> b, ARDOUR:
 {
        using namespace Menu_Helpers;
 
-       if (b->ports_are_outputs() == false || b->nchannels() != _route->n_inputs() || *b == *_route->output()->bundle()) {
-               return;
-       }
+       if (b->ports_are_outputs() == false || b->nchannels() != _route->n_inputs() || *b == *_route->output()->bundle()) {
+               return;
+       }
 
        list<boost::shared_ptr<Bundle> >::iterator i = input_menu_bundles.begin ();
        while (i != input_menu_bundles.end() && b->has_same_ports (*i) == false) {
@@ -1067,9 +1088,9 @@ MixerStrip::maybe_add_bundle_to_output_menu (boost::shared_ptr<Bundle> b, ARDOUR
 {
        using namespace Menu_Helpers;
 
-       if (b->ports_are_inputs() == false || b->nchannels() != _route->n_outputs() || *b == *_route->input()->bundle()) {
-               return;
-       }
+       if (b->ports_are_inputs() == false || b->nchannels() != _route->n_outputs() || *b == *_route->input()->bundle()) {
+               return;
+       }
 
        list<boost::shared_ptr<Bundle> >::iterator i = output_menu_bundles.begin ();
        while (i != output_menu_bundles.end() && b->has_same_ports (*i) == false) {
@@ -1189,6 +1210,7 @@ MixerStrip::update_io_button (boost::shared_ptr<ARDOUR::Route> route, Width widt
 {
        uint32_t io_count;
        uint32_t io_index;
+       boost::shared_ptr<IO> io;
        boost::shared_ptr<Port> port;
        vector<string> port_connections;
 
@@ -1213,30 +1235,70 @@ MixerStrip::update_io_button (boost::shared_ptr<ARDOUR::Route> route, Width widt
        ostringstream tooltip;
        char * tooltip_cstr;
 
-       //to avoid confusion, the button caption should only show connections that match the datatype of the track
+       /* To avoid confusion, the button caption only shows connections that match the expected datatype
+        *
+        * First of all, if the user made only connections to a given type, we should use that one since
+        * it is very probably what the user expects. If there are several connections types, then show
+        * audio ones as primary, which matches expectations for both audio tracks with midi control and
+        * synthesisers. This first heuristic can be expressed with these two rules:
+        * A) If there are connected audio ports, consider audio as primary type.
+        * B) Else, if there are connected midi ports, consider midi as primary type.
+        *
+        * If there are no connected ports, then we choose the primary type based on the type of existing
+        * but unconnected ports. Again:
+        * C) If there are audio ports, consider audio as primary type.
+        * D) Else, if there are midi ports, consider midi as primary type. */
+
        DataType dt = DataType::AUDIO;
-       if ( boost::dynamic_pointer_cast<MidiTrack>(route) != 0 ) {
-               dt = DataType::MIDI;
-               // avoid further confusion with Midi-tracks that have a synth.
-               // Audio-ports may be connected, but button says "Disconnected"
+       bool match = false;
+
+       if (for_input) {
+               io = route->input();
+       } else {
+               io = route->output();
+       }
+
+       io_count = io->n_ports().n_total();
+       for (io_index = 0; io_index < io_count; ++io_index) {
+               port = io->nth (io_index);
+               if (port->connected()) {
+                       match = true;
+                       if (port->type() == DataType::AUDIO) {
+                               /* Rule A) applies no matter the remaining ports */
+                               dt = DataType::AUDIO;
+                               break;
+                       }
+                       if (port->type() == DataType::MIDI) {
+                               /* Rule B) is a good candidate... */
+                               dt = DataType::MIDI;
+                               /* ...but continue the loop to check remaining ports for rule A) */
+                       }
+               }
+       }
+
+       if (!match) {
+               /* Neither rule A) nor rule B) matched */
+               if ( io->n_ports().n_audio() > 0 ) {
+                       /* Rule C */
+                       dt = DataType::AUDIO;
+               } else if ( io->n_ports().n_midi() > 0 ) {
+                       /* Rule D */
+                       dt = DataType::MIDI;
+               }
+       }
+
+       if ( dt == DataType::MIDI ) {
                tooltip << _("MIDI ");
        }
 
        if (for_input) {
-               io_count = route->n_inputs().n_total();
                tooltip << string_compose (_("<b>INPUT</b> to %1"), Gtkmm2ext::markup_escape_text (route->name()));
        } else {
-               io_count = route->n_outputs().n_total();
                tooltip << string_compose (_("<b>OUTPUT</b> from %1"), Gtkmm2ext::markup_escape_text (route->name()));
        }
 
-
        for (io_index = 0; io_index < io_count; ++io_index) {
-               if (for_input) {
-                       port = route->input()->nth (io_index);
-               } else {
-                       port = route->output()->nth (io_index);
-               }
+               port = io->nth (io_index);
 
                port_connections.clear ();
                port->get_connections(port_connections);
@@ -1353,7 +1415,7 @@ MixerStrip::update_io_button (boost::shared_ptr<ARDOUR::Route> route, Width widt
 
        if (for_input) {
                set_tooltip (&input_button, tooltip_cstr);
-       } else {
+       } else {
                set_tooltip (&output_button, tooltip_cstr);
        }
 
@@ -1407,7 +1469,7 @@ void
 MixerStrip::update_input_display ()
 {
        update_io_button (_route, _width, true);
-       panners.setup_pan ();
+       panners.setup_pan ();
 
        if (has_audio_outputs ()) {
                panners.show_all ();
@@ -1421,8 +1483,8 @@ void
 MixerStrip::update_output_display ()
 {
        update_io_button (_route, _width, false);
-       gpm.setup_meters ();
-       panners.setup_pan ();
+       gpm.setup_meters ();
+       panners.setup_pan ();
 
        if (has_audio_outputs ()) {
                panners.show_all ();
@@ -1469,33 +1531,27 @@ MixerStrip::port_connected_or_disconnected (boost::weak_ptr<Port> wa, boost::wea
 void
 MixerStrip::setup_comment_button ()
 {
-       switch (_width) {
+       std::string comment = _route->comment();
 
-       case Wide:
-               if (_route->comment().empty ()) {
-                       _comment_button.unset_bg (STATE_NORMAL);
-                       _comment_button.set_text (_("Comments"));
-               } else {
-                       _comment_button.modify_bg (STATE_NORMAL, color ());
-                       _comment_button.set_text (_("*Comments*"));
-               }
-               break;
+       set_tooltip (_comment_button, comment.empty() ? _("Click to add/edit comments") : _route->comment());
 
-       case Narrow:
-               if (_route->comment().empty ()) {
-                       _comment_button.unset_bg (STATE_NORMAL);
-                       _comment_button.set_text (_("Cmt"));
-               } else {
-                       _comment_button.modify_bg (STATE_NORMAL, color ());
-                       _comment_button.set_text (_("*Cmt*"));
-               }
-               break;
+       if (comment.empty ()) {
+               _comment_button.set_name ("generic button");
+               _comment_button.set_text (_width  == Wide ? _("Comments") : _("Cmt"));
+               return;
        }
 
-       set_tooltip (
-               _comment_button, _route->comment().empty() ? _("Click to add/edit comments") : _route->comment()
-               );
+       _comment_button.set_name ("comment button");
 
+       string::size_type pos = comment.find_first_of (" \t\n");
+       if (pos != string::npos) {
+               comment = comment.substr (0, pos);
+       }
+       if (comment.empty()) {
+               _comment_button.set_text (_width  == Wide ? _("Comments") : _("Cmt"));
+       } else {
+               _comment_button.set_text (comment);
+       }
 }
 
 bool
@@ -1509,9 +1565,9 @@ MixerStrip::select_route_group (GdkEventButton *ev)
 
                        PropertyList* plist = new PropertyList();
 
-                       plist->add (Properties::gain, true);
-                       plist->add (Properties::mute, true);
-                       plist->add (Properties::solo, true);
+                       plist->add (Properties::group_gain, true);
+                       plist->add (Properties::group_mute, true);
+                       plist->add (Properties::group_solo, true);
 
                        group_menu = new RouteGroupMenu (_session, plist);
                }
@@ -1560,6 +1616,18 @@ MixerStrip::show_passthru_color ()
        reset_strip_style ();
 }
 
+
+void
+MixerStrip::help_count_plugins (boost::weak_ptr<Processor> p)
+{
+       boost::shared_ptr<Processor> processor (p.lock ());
+       if (!processor || !processor->display_to_user()) {
+               return;
+       }
+       if (boost::dynamic_pointer_cast<PluginInsert> (processor)) {
+               ++_plugin_insert_cnt;
+       }
+}
 void
 MixerStrip::build_route_ops_menu ()
 {
@@ -1600,8 +1668,14 @@ MixerStrip::build_route_ops_menu ()
                i->signal_activate().connect (sigc::hide_return (sigc::bind (sigc::mem_fun (*_route, &Route::set_strict_io), !_route->strict_io())));
        }
 
-       items.push_back (SeparatorElem());
+       _plugin_insert_cnt = 0;
+       _route->foreach_processor (sigc::mem_fun (*this, &MixerStrip::help_count_plugins));
+       if (_plugin_insert_cnt > 0) {
+               items.push_back (SeparatorElem());
+               items.push_back (MenuElem (_("Pin Connections..."), sigc::mem_fun (*this, &RouteUI::manage_pins)));
+       }
 
+       items.push_back (SeparatorElem());
        items.push_back (MenuElem (_("Adjust Latency..."), sigc::mem_fun (*this, &RouteUI::adjust_latency)));
 
        items.push_back (SeparatorElem());
@@ -1609,9 +1683,6 @@ MixerStrip::build_route_ops_menu ()
        denormal_menu_item = dynamic_cast<Gtk::CheckMenuItem *> (&items.back());
        denormal_menu_item->set_active (_route->denormal_protection());
 
-       items.push_back (SeparatorElem());
-       items.push_back (MenuElem (_("Remote Control ID..."), sigc::mem_fun (*this, &RouteUI::open_remote_control_id_dialog)));
-
        if (_route) {
                /* note that this relies on selection being shared across editor and
                   mixer (or global to the backend, in the future), which is the only
@@ -1629,7 +1700,7 @@ MixerStrip::build_route_ops_menu ()
                                items.push_back (SeparatorElem());
                                items.push_back (MenuElem (_("Duplicate..."), sigc::mem_fun (*this, &RouteUI::duplicate_selected_routes)));
                        }
-       
+
                        items.push_back (SeparatorElem());
                        items.push_back (MenuElem (_("Remove"), sigc::mem_fun(PublicEditor::instance(), &PublicEditor::remove_tracks)));
                }
@@ -1643,7 +1714,7 @@ MixerStrip::name_button_button_press (GdkEventButton* ev)
                list_route_operations ();
 
                /* do not allow rename if the track is record-enabled */
-               rename_menu_item->set_sensitive (!_route->record_enabled());
+               rename_menu_item->set_sensitive (!is_track() || !track()->rec_enable_control()->get_value());
                route_ops_menu->popup (1, ev->time);
 
                return true;
@@ -1659,7 +1730,7 @@ MixerStrip::name_button_button_release (GdkEventButton* ev)
                list_route_operations ();
 
                /* do not allow rename if the track is record-enabled */
-               rename_menu_item->set_sensitive (!_route->record_enabled());
+               rename_menu_item->set_sensitive (!is_track() || !track()->rec_enable_control()->get_value());
                route_ops_menu->popup (1, ev->time);
        }
 
@@ -1673,7 +1744,7 @@ MixerStrip::number_button_button_press (GdkEventButton* ev)
                list_route_operations ();
 
                /* do not allow rename if the track is record-enabled */
-               rename_menu_item->set_sensitive (!_route->record_enabled());
+               rename_menu_item->set_sensitive (!is_track() || !track()->rec_enable_control()->get_value());
                route_ops_menu->popup (1, ev->time);
 
                return true;
@@ -1693,13 +1764,15 @@ void
 MixerStrip::set_selected (bool yn)
 {
        AxisView::set_selected (yn);
-       if (_selected) {
+
+       if (selected()) {
                global_frame.set_shadow_type (Gtk::SHADOW_ETCHED_OUT);
                global_frame.set_name ("MixerStripSelectedFrame");
        } else {
                global_frame.set_shadow_type (Gtk::SHADOW_IN);
                global_frame.set_name ("MixerStripFrame");
        }
+
        global_frame.queue_draw ();
 
 //     if (!yn)
@@ -1707,10 +1780,8 @@ MixerStrip::set_selected (bool yn)
 }
 
 void
-MixerStrip::property_changed (const PropertyChange& what_changed)
+MixerStrip::route_property_changed (const PropertyChange& what_changed)
 {
-       RouteUI::property_changed (what_changed);
-
        if (what_changed.contains (ARDOUR::Properties::name)) {
                name_changed ();
        }
@@ -1760,6 +1831,12 @@ MixerStrip::name_button_resized (Gtk::Allocation& alloc)
        name_button.set_layout_ellipsize_width (alloc.get_width() * PANGO_SCALE);
 }
 
+void
+MixerStrip::comment_button_resized (Gtk::Allocation& alloc)
+{
+       _comment_button.set_layout_ellipsize_width (alloc.get_width() * PANGO_SCALE);
+}
+
 bool
 MixerStrip::width_button_pressed (GdkEventButton* ev)
 {
@@ -1834,6 +1911,7 @@ MixerStrip::map_frozen ()
        } else {
                processor_box.set_sensitive (true);
        }
+       RouteUI::map_frozen ();
 }
 
 void
@@ -2021,12 +2099,13 @@ MixerStrip::drop_send ()
        meter_point_button.set_sensitive (true);
        mute_button->set_sensitive (true);
        solo_button->set_sensitive (true);
-       rec_enable_button->set_sensitive (true);
        solo_isolated_led->set_sensitive (true);
        solo_safe_led->set_sensitive (true);
        monitor_input_button->set_sensitive (true);
        monitor_disk_button->set_sensitive (true);
        _comment_button.set_sensitive (true);
+       RouteUI::check_rec_enable_sensitivity ();
+       set_button_names (); // update solo button visual state
 }
 
 void
@@ -2117,7 +2196,7 @@ MixerStrip::set_button_names ()
                        monitor_section_button->set_text (_("Mon"));
                }
 
-               if (_route && _route->solo_safe()) {
+               if (_route && _route->solo_safe_control()->solo_safe()) {
                        solo_button->set_visual_state (Gtkmm2ext::VisualState (solo_button->visual_state() | Gtkmm2ext::Insensitive));
                } else {
                        solo_button->set_visual_state (Gtkmm2ext::VisualState (solo_button->visual_state() & ~Gtkmm2ext::Insensitive));
@@ -2146,7 +2225,7 @@ MixerStrip::set_button_names ()
                        monitor_section_button->set_text (S_("Mon|O"));
                }
 
-               if (_route && _route->solo_safe()) {
+               if (_route && _route->solo_safe_control()->solo_safe()) {
                        solo_button->set_visual_state (Gtkmm2ext::VisualState (solo_button->visual_state() | Gtkmm2ext::Insensitive));
                } else {
                        solo_button->set_visual_state (Gtkmm2ext::VisualState (solo_button->visual_state() & ~Gtkmm2ext::Insensitive));
@@ -2238,11 +2317,9 @@ MixerStrip::parameter_changed (string p)
                   our VisibilityGroup to reflect these changes in our widgets.
                */
                _visibility.set_state (UIConfiguration::instance().get_mixer_strip_visibility ());
-       }
-       else if (p == "track-name-number") {
+       } else if (p == "track-name-number") {
                name_changed ();
-       }
-       else if (p == "use-monitor-bus") {
+       } else if (p == "use-monitor-bus") {
                if (monitor_section_button) {
                        if (mute_button->get_parent()) {
                                mute_button->get_parent()->remove(*mute_button);
@@ -2260,6 +2337,8 @@ MixerStrip::parameter_changed (string p)
                                mute_button->show();
                        }
                }
+       } else if (p == "track-name-number") {
+               update_track_number_visibility();
        }
 }
 
@@ -2462,3 +2541,45 @@ MixerStrip::set_meter_type (MeterType t)
        if (_suspend_menu_callbacks) return;
        gpm.set_type (t);
 }
+
+void
+MixerStrip::update_track_number_visibility ()
+{
+       DisplaySuspender ds;
+       bool show_label = _session->config.get_track_name_number();
+
+       if (_route && _route->is_master()) {
+               show_label = false;
+       }
+
+       if (show_label) {
+               number_label.show ();
+               // see ArdourButton::on_size_request(), we should probably use a global size-group here instead.
+               // except the width of the number label is subtracted from the name-hbox, so we
+               // need to explictly calculate it anyway until the name-label & entry become ArdourWidgets.
+               int tnw = (2 + std::max(2u, _session->track_number_decimals())) * number_label.char_pixel_width();
+               if (tnw & 1) --tnw;
+               number_label.set_size_request(tnw, -1);
+               number_label.show ();
+       } else {
+               number_label.hide ();
+       }
+}
+
+Gdk::Color
+MixerStrip::color () const
+{
+       return route_color ();
+}
+
+bool
+MixerStrip::marked_for_display () const
+{
+       return !_route->presentation_info().hidden();
+}
+
+bool
+MixerStrip::set_marked_for_display (bool yn)
+{
+       return RouteUI::mark_hidden (!yn);
+}