Update fr.po
[ardour.git] / gtk2_ardour / mixer_ui.cc
index 474cef239517fe67881710697fc72154448e82cf..e58a61948db0ecdc02bbacb7a170e746884becca 100644 (file)
 #include <gtkmm/accelmap.h>
 
 #include "pbd/convert.h"
-#include "pbd/stacktrace.h"
-#include <glibmm/thread.h>
+#include "pbd/unwind.h"
+
+#include <glibmm/threads.h>
 
 #include <gtkmm2ext/gtk_ui.h>
 #include <gtkmm2ext/utils.h>
 #include <gtkmm2ext/tearoff.h>
 #include <gtkmm2ext/window_title.h>
 
-#include "ardour/audio_track.h"
+#include "ardour/debug.h"
+#include "ardour/midi_track.h"
 #include "ardour/plugin_manager.h"
 #include "ardour/route_group.h"
+#include "ardour/route_sorters.h"
 #include "ardour/session.h"
-#include "ardour/session_route.h"
 
 #include "keyboard.h"
 #include "mixer_ui.h"
 #include "ardour_ui.h"
 #include "prompter.h"
 #include "utils.h"
+#include "route_sorter.h"
 #include "actions.h"
 #include "gui_thread.h"
 #include "mixer_group_tabs.h"
+#include "timers.h"
+#include "ui_config.h"
 
 #include "i18n.h"
 
 using namespace ARDOUR;
+using namespace ARDOUR_UI_UTILS;
 using namespace PBD;
 using namespace Gtk;
 using namespace Glib;
@@ -65,37 +71,43 @@ using namespace Gtkmm2ext;
 using namespace std;
 
 using PBD::atoi;
+using PBD::Unwinder;
 
 Mixer_UI* Mixer_UI::_instance = 0;
 
 Mixer_UI*
-Mixer_UI::instance () 
+Mixer_UI::instance ()
 {
        if (!_instance) {
                _instance  = new Mixer_UI;
-       } 
+       }
 
        return _instance;
 }
 
 Mixer_UI::Mixer_UI ()
        : Window (Gtk::WINDOW_TOPLEVEL)
+       , VisibilityTracker (*((Gtk::Window*) this))
+       , _visible (false)
+       , no_track_list_redisplay (false)
+       , in_group_row_change (false)
+       , track_menu (0)
+       , _monitor_section (0)
+       , _plugin_selector (0)
+       , _strip_width (UIConfiguration::instance().get_default_narrow_ms() ? Narrow : Wide)
+       , ignore_reorder (false)
+        , _in_group_rebuild_or_clear (false)
+        , _route_deletion_in_progress (false)
        , _following_editor_selection (false)
+       , _maximised (false)
 {
        /* allow this window to become the key focus window */
        set_flags (CAN_FOCUS);
 
-       _strip_width = Config->get_default_narrow_ms() ? Narrow : Wide;
-       track_menu = 0;
-        _monitor_section = 0;
-       no_track_list_redisplay = false;
-       in_group_row_change = false;
-       _visible = false;
-       strip_redisplay_does_not_reset_order_keys = false;
-       strip_redisplay_does_not_sync_order_keys = false;
-       ignore_sync = false;
+       Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_order_keys, this), gui_context());
 
-       Route::SyncOrderKeys.connect (*this, invalidator (*this), ui_bind (&Mixer_UI::sync_order_keys, this, _1), gui_context());
+       scroller.set_can_default (true);
+       set_default (scroller);
 
        scroller_base.set_flags (Gtk::CAN_FOCUS);
        scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
@@ -111,7 +123,7 @@ Mixer_UI::Mixer_UI ()
        b->show_all ();
 
        scroller.add (*b);
-       scroller.set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
+       scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 
        setup_track_display ();
 
@@ -123,11 +135,12 @@ Mixer_UI::Mixer_UI ()
        group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
        group_display.get_column (0)->set_expand(true);
        group_display.get_column (1)->set_expand(false);
-       group_display.set_name ("MixerGroupList");
+       group_display.set_name ("EditGroupList");
        group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
        group_display.set_reorderable (true);
        group_display.set_headers_visible (true);
        group_display.set_rules_hint (true);
+       group_display.set_can_focus(false);
 
        /* name is directly editable */
 
@@ -191,7 +204,7 @@ Mixer_UI::Mixer_UI ()
 #else
        global_hpacker.pack_start (out_packer, false, false, 12);
 #endif
-       list_hpane.pack1(list_vpacker, true, true);
+       list_hpane.pack1(list_vpacker, false, true);
        list_hpane.pack2(global_hpacker, true, false);
 
        rhs_pane1.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
@@ -235,13 +248,7 @@ Mixer_UI::Mixer_UI ()
        list_hpane.show();
        group_display.show();
 
-       auto_rebinding = FALSE;
-
-       _in_group_rebuild_or_clear = false;
-
-       MixerStrip::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&Mixer_UI::remove_strip, this, _1), gui_context());
-
-        MonitorSection::setup_knob_images ();
+       MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 
 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
        _plugin_selector = new PluginSelector (PluginManager::instance ());
@@ -250,6 +257,10 @@ Mixer_UI::Mixer_UI ()
 
 Mixer_UI::~Mixer_UI ()
 {
+       if (_monitor_section) {
+               delete _monitor_section;
+       }
+       delete _plugin_selector;
 }
 
 void
@@ -285,10 +296,10 @@ Mixer_UI::show_window ()
                        ms = (*ri)[track_columns.strip];
                        ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
                        /* Fix visibility of mixer strip stuff */
-                       ms->parameter_changed (X_("mixer-strip-visibility"));
+                       ms->parameter_changed (X_("mixer-element-visibility"));
                }
        }
-       
+
        /* force focus into main area */
        scroller_base.grab_focus ();
 
@@ -306,76 +317,120 @@ Mixer_UI::hide_window (GdkEventAny *ev)
 
 
 void
-Mixer_UI::add_strip (RouteList& routes)
+Mixer_UI::add_strips (RouteList& routes)
 {
-       ENSURE_GUI_THREAD (*this, &Mixer_UI::add_strip, routes)
+       bool from_scratch = track_model->children().size() == 0;
+       Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
+
+       for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
+               boost::shared_ptr<Route> r = (*it)[track_columns.route];
+
+               if (r->order_key() == (routes.front()->order_key() + routes.size())) {
+                       insert_iter = it;
+                       break;
+               }
+       }
+
+       if(!from_scratch) {
+               _selection.clear_routes ();
+       }
 
        MixerStrip* strip;
 
-       no_track_list_redisplay = true;
-       strip_redisplay_does_not_sync_order_keys = true;
+       try {
+               no_track_list_redisplay = true;
+               track_display.set_model (Glib::RefPtr<ListStore>());
 
-       for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
-               boost::shared_ptr<Route> route = (*x);
+               for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
+                       boost::shared_ptr<Route> route = (*x);
 
-               if (route->is_hidden()) {
-                       continue;
-               }
+                       if (route->is_auditioner()) {
+                               continue;
+                       }
 
-                if (route->is_monitor()) {
-                        if (!_monitor_section) {
-                                _monitor_section = new MonitorSection (_session);
-                                out_packer.pack_end (_monitor_section->tearoff(), false, false);
-                        } else {
-                                _monitor_section->set_session (_session);
-                        }
+                       if (route->is_monitor()) {
 
-                        _monitor_section->tearoff().show_all ();
+                               if (!_monitor_section) {
+                                       _monitor_section = new MonitorSection (_session);
 
-                        XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
-                        if (mnode) {
-                                _monitor_section->tearoff().set_state (*mnode);
-                        }
+                                       XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
+                                       if (mnode) {
+                                               _monitor_section->tearoff().set_state (*mnode);
+                                       }
+                               }
 
-                        /* no regular strip shown for control out */
+                               out_packer.pack_end (_monitor_section->tearoff(), false, false);
+                               _monitor_section->set_session (_session);
+                               _monitor_section->tearoff().show_all ();
 
-                        continue;
-                }
+                               route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 
-               strip = new MixerStrip (*this, _session, route);
-               strips.push_back (strip);
+                               /* no regular strip shown for control out */
 
-               Config->get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
+                               continue;
+                       }
 
-               if (strip->width_owner() != strip) {
-                       strip->set_width_enum (_strip_width, this);
-               }
+                       strip = new MixerStrip (*this, _session, route);
+                       strips.push_back (strip);
 
-               show_strip (strip);
+                       UIConfiguration::instance().get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 
-               TreeModel::Row row = *(track_model->append());
-               row[track_columns.text] = route->name();
-               row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
-               row[track_columns.route] = route;
-               row[track_columns.strip] = strip;
+                       if (strip->width_owner() != strip) {
+                               strip->set_width_enum (_strip_width, this);
+                       }
 
-               if (route->order_key (N_("signal")) == -1) {
-                       route->set_order_key (N_("signal"), track_model->children().size()-1);
-               }
+                       show_strip (strip);
 
-               route->PropertyChanged.connect (*this, invalidator (*this), ui_bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
+                       TreeModel::Row row = *(track_model->insert(insert_iter));
+                       row[track_columns.text] = route->name();
+                       row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
+                       row[track_columns.route] = route;
+                       row[track_columns.strip] = strip;
 
-               strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
-               strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
+                       if (!from_scratch) {
+                               _selection.add (strip);
+                       }
+
+                       route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
+
+                       strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
+                       strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
+               }
+
+       } catch (...) {
        }
 
        no_track_list_redisplay = false;
+       track_display.set_model (track_model);
 
+       sync_order_keys_from_treeview ();
        redisplay_track_list ();
+}
+
+void
+Mixer_UI::deselect_all_strip_processors ()
+{
+       for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+               (*i)->deselect_all_processors();
+       }
+}
+
+void
+Mixer_UI::select_none ()
+{
+       _selection.clear_routes();
+       deselect_all_strip_processors();
+}
 
-       strip_redisplay_does_not_sync_order_keys = false;
+void
+Mixer_UI::delete_processors ()
+{
+       for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+               (*i)->delete_processors();
+       }
 }
 
+
 void
 Mixer_UI::remove_strip (MixerStrip* strip)
 {
@@ -384,8 +439,6 @@ Mixer_UI::remove_strip (MixerStrip* strip)
                return;
        }
 
-       ENSURE_GUI_THREAD (*this, &Mixer_UI::remove_strip, strip);
-
        TreeModel::Children rows = track_model->children();
        TreeModel::Children::iterator ri;
        list<MixerStrip *>::iterator i;
@@ -394,74 +447,200 @@ Mixer_UI::remove_strip (MixerStrip* strip)
                strips.erase (i);
        }
 
-       strip_redisplay_does_not_sync_order_keys = true;
-
        for (ri = rows.begin(); ri != rows.end(); ++ri) {
                if ((*ri)[track_columns.strip] == strip) {
+                        PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
                        track_model->erase (ri);
                        break;
                }
        }
-
-       strip_redisplay_does_not_sync_order_keys = false;
 }
 
 void
-Mixer_UI::sync_order_keys (string const & src)
+Mixer_UI::reset_remote_control_ids ()
 {
+       if (Config->get_remote_model() == UserOrdered || !_session || _session->deletion_in_progress()) {
+               return;
+       }
+
        TreeModel::Children rows = track_model->children();
+
+       if (rows.empty()) {
+               return;
+       }
+
+       DEBUG_TRACE (DEBUG::OrderKeys, "mixer resets remote control ids after remote model change\n");
+
        TreeModel::Children::iterator ri;
+       bool rid_change = false;
+       uint32_t rid = 1;
+       uint32_t invisible_key = UINT32_MAX;
 
-       if (src == N_("signal") || !_session || (_session->state_of_the_state() & (Session::Loading|Session::Deletion)) || rows.empty()) {
+       for (ri = rows.begin(); ri != rows.end(); ++ri) {
+
+               /* skip two special values */
+
+               if (rid == Route::MasterBusRemoteControlID) {
+                       rid++;
+               }
+
+               if (rid == Route::MonitorBusRemoteControlID) {
+                       rid++;
+               }
+
+               boost::shared_ptr<Route> route = (*ri)[track_columns.route];
+               bool visible = (*ri)[track_columns.visible];
+
+               if (!route->is_master() && !route->is_monitor()) {
+
+                       uint32_t new_rid = (visible ? rid : invisible_key--);
+
+                       if (new_rid != route->remote_control_id()) {
+                               route->set_remote_control_id_explicit (new_rid);
+                               rid_change = true;
+                       }
+
+                       if (visible) {
+                               rid++;
+                       }
+               }
+       }
+
+       if (rid_change) {
+               /* tell the world that we changed the remote control IDs */
+               _session->notify_remote_id_change ();
+       }
+}
+
+void
+Mixer_UI::sync_order_keys_from_treeview ()
+{
+       if (ignore_reorder || !_session || _session->deletion_in_progress()) {
+               return;
+       }
+
+       TreeModel::Children rows = track_model->children();
+
+       if (rows.empty()) {
                return;
        }
 
-       std::map<int,int> keys;
+       DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync order keys from model\n");
 
+       TreeModel::Children::iterator ri;
        bool changed = false;
+       bool rid_change = false;
+       uint32_t order = 0;
+       uint32_t rid = 1;
+       uint32_t invisible_key = UINT32_MAX;
 
-       unsigned order = 0;
-       for (ri = rows.begin(); ri != rows.end(); ++ri, ++order) {
+       for (ri = rows.begin(); ri != rows.end(); ++ri) {
                boost::shared_ptr<Route> route = (*ri)[track_columns.route];
-               unsigned int old_key = order;
-               unsigned int new_key = route->order_key (N_("signal"));
+               bool visible = (*ri)[track_columns.visible];
 
-               keys[new_key] = old_key;
+               uint32_t old_key = route->order_key ();
 
-               if (new_key != old_key) {
+               if (order != old_key) {
+                       route->set_order_key (order);
                        changed = true;
                }
+
+               if ((Config->get_remote_model() == MixerOrdered) && !route->is_master() && !route->is_monitor()) {
+
+                       uint32_t new_rid = (visible ? rid : invisible_key--);
+
+                       if (new_rid != route->remote_control_id()) {
+                               route->set_remote_control_id_explicit (new_rid);
+                               rid_change = true;
+                       }
+
+                       if (visible) {
+                               rid++;
+                       }
+
+               }
+
+               ++order;
        }
 
-       if (keys.size() != rows.size()) {
-               PBD::stacktrace (cerr, 20);
+       if (changed) {
+               /* tell everyone that we changed the mixer sort keys */
+               _session->sync_order_keys ();
        }
-       assert(keys.size() == rows.size());
 
-       // Remove any gaps in keys caused by automation children tracks
+       if (rid_change) {
+               /* tell the world that we changed the remote control IDs */
+               _session->notify_remote_id_change ();
+       }
+}
+
+void
+Mixer_UI::sync_treeview_from_order_keys ()
+{
+       if (!_session || _session->deletion_in_progress()) {
+               return;
+       }
+
+       DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from order keys.\n");
+
+       /* we could get here after either a change in the Mixer or Editor sort
+        * order, but either way, the mixer order keys reflect the intended
+        * order for the GUI, so reorder the treeview model to match it.
+        */
+
        vector<int> neworder;
-       for (std::map<int,int>::const_iterator i = keys.begin(); i != keys.end(); ++i) {
-               neworder.push_back(i->second);
+       TreeModel::Children rows = track_model->children();
+       uint32_t old_order = 0;
+       bool changed = false;
+
+       if (rows.empty()) {
+               return;
+       }
+
+       OrderKeySortedRoutes sorted_routes;
+
+       for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
+               boost::shared_ptr<Route> route = (*ri)[track_columns.route];
+               sorted_routes.push_back (RoutePlusOrderKey (route, old_order, route->order_key ()));
+       }
+
+       SortByNewDisplayOrder cmp;
+
+       sort (sorted_routes.begin(), sorted_routes.end(), cmp);
+       neworder.assign (sorted_routes.size(), 0);
+
+       uint32_t n = 0;
+
+       for (OrderKeySortedRoutes::iterator sr = sorted_routes.begin(); sr != sorted_routes.end(); ++sr, ++n) {
+
+               neworder[n] = sr->old_display_order;
+
+               if (sr->old_display_order != n) {
+                       changed = true;
+               }
+
+               DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("MIXER change order for %1 from %2 to %3\n",
+                                                              sr->route->name(), sr->old_display_order, n));
        }
-       assert(neworder.size() == rows.size());
 
        if (changed) {
-               strip_redisplay_does_not_reset_order_keys = true;
+               Unwinder<bool> uw (ignore_reorder, true);
                track_model->reorder (neworder);
-               strip_redisplay_does_not_reset_order_keys = false;
        }
+
+       redisplay_track_list ();
 }
 
 void
 Mixer_UI::follow_editor_selection ()
 {
-       if (!Config->get_link_editor_and_mixer_selection() || _following_editor_selection) {
+       if (_following_editor_selection) {
                return;
        }
 
        _following_editor_selection = true;
        _selection.block_routes_changed (true);
-       
+
        TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 
        _selection.clear_routes ();
@@ -501,24 +680,28 @@ Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
                        /* primary-click: toggle selection state of strip */
                        if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
                                _selection.remove (strip);
-                       } 
+                       } else if (_selection.routes.size() > 1) {
+                               /* de-select others */
+                               _selection.set (strip);
+                       }
                } else {
                        if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
                                _selection.add (strip);
                        } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 
                                if (!_selection.selected(strip)) {
-                               
+
                                        /* extend selection */
-                                       
+
                                        vector<MixerStrip*> tmp;
                                        bool accumulate = false;
-                                       
+                                       bool found_another = false;
+
                                        tmp.push_back (strip);
 
                                        for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
                                                if ((*i) == strip) {
-                                                       /* hit clicked strip, start accumulating till we hit the first 
+                                                       /* hit clicked strip, start accumulating till we hit the first
                                                           selected strip
                                                        */
                                                        if (accumulate) {
@@ -531,6 +714,7 @@ Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
                                                        /* hit selected strip. if currently accumulating others,
                                                           we're done. if not accumulating others, start doing so.
                                                        */
+                                                       found_another = true;
                                                        if (accumulate) {
                                                                /* done */
                                                                break;
@@ -544,9 +728,12 @@ Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
                                                }
                                        }
 
-                                       for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
-                                               _selection.add (*i);
-                                       }
+                                       if (found_another) {
+                                               for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
+                                                       _selection.add (*i);
+                                               }
+                                       } else
+                                               _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
                                }
 
                        } else {
@@ -580,15 +767,15 @@ Mixer_UI::set_session (Session* sess)
 
        initial_track_display ();
 
-       _session->RouteAdded.connect (_session_connections, invalidator (*this), ui_bind (&Mixer_UI::add_strip, this, _1), gui_context());
-       _session->route_group_added.connect (_session_connections, invalidator (*this), ui_bind (&Mixer_UI::add_route_group, this, _1), gui_context());
+       _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
+       _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
        _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
        _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
-       _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), ui_bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
+       _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
        _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
-       _session->StateSaved.connect (_session_connections, invalidator (*this), ui_bind (&Mixer_UI::update_title, this), gui_context());
+       _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 
-       Config->ParameterChanged.connect (*this, invalidator (*this), ui_bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
+       Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 
        route_groups_changed ();
 
@@ -629,6 +816,50 @@ Mixer_UI::session_going_away ()
        update_title ();
 }
 
+void
+Mixer_UI::track_visibility_changed (std::string const & path)
+{
+       if (_session && _session->deletion_in_progress()) {
+               return;
+       }
+
+       TreeIter iter;
+
+       if ((iter = track_model->get_iter (path))) {
+               MixerStrip* strip = (*iter)[track_columns.strip];
+               if (strip) {
+                       bool visible = (*iter)[track_columns.visible];
+
+                       if (strip->set_marked_for_display (!visible)) {
+                               update_track_visibility ();
+                       }
+               }
+       }
+}
+
+void
+Mixer_UI::update_track_visibility ()
+{
+       TreeModel::Children rows = track_model->children();
+       TreeModel::Children::iterator i;
+
+       {
+               Unwinder<bool> uw (no_track_list_redisplay, true);
+
+               for (i = rows.begin(); i != rows.end(); ++i) {
+                       MixerStrip *strip = (*i)[track_columns.strip];
+                       (*i)[track_columns.visible] = strip->marked_for_display ();
+               }
+
+               /* force route order keys catch up with visibility changes
+                */
+
+               sync_order_keys_from_treeview ();
+       }
+
+       redisplay_track_list ();
+}
+
 void
 Mixer_UI::show_strip (MixerStrip* ms)
 {
@@ -640,6 +871,7 @@ Mixer_UI::show_strip (MixerStrip* ms)
                MixerStrip* strip = (*i)[track_columns.strip];
                if (strip == ms) {
                        (*i)[track_columns.visible] = true;
+                       redisplay_track_list ();
                        break;
                }
        }
@@ -656,6 +888,7 @@ Mixer_UI::hide_strip (MixerStrip* ms)
                MixerStrip* strip = (*i)[track_columns.strip];
                if (strip == ms) {
                        (*i)[track_columns.visible] = false;
+                       redisplay_track_list ();
                        break;
                }
        }
@@ -664,7 +897,7 @@ Mixer_UI::hide_strip (MixerStrip* ms)
 gint
 Mixer_UI::start_updating ()
 {
-    fast_screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
+    fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
     return 0;
 }
 
@@ -691,71 +924,80 @@ Mixer_UI::set_all_strips_visibility (bool yn)
        TreeModel::Children rows = track_model->children();
        TreeModel::Children::iterator i;
 
-       no_track_list_redisplay = true;
+       {
+               Unwinder<bool> uw (no_track_list_redisplay, true);
 
-       for (i = rows.begin(); i != rows.end(); ++i) {
+               for (i = rows.begin(); i != rows.end(); ++i) {
 
-               TreeModel::Row row = (*i);
-               MixerStrip* strip = row[track_columns.strip];
+                       TreeModel::Row row = (*i);
+                       MixerStrip* strip = row[track_columns.strip];
 
-               if (strip == 0) {
-                       continue;
-               }
+                       if (strip == 0) {
+                               continue;
+                       }
 
-               if (strip->route()->is_master() || strip->route()->is_monitor()) {
-                       continue;
-               }
+                       if (strip->route()->is_master() || strip->route()->is_monitor()) {
+                               continue;
+                       }
 
-               (*i)[track_columns.visible] = yn;
+                       (*i)[track_columns.visible] = yn;
+               }
        }
 
-       no_track_list_redisplay = false;
        redisplay_track_list ();
 }
 
 
 void
-Mixer_UI::set_all_audio_visibility (int tracks, bool yn)
+Mixer_UI::set_all_audio_midi_visibility (int tracks, bool yn)
 {
        TreeModel::Children rows = track_model->children();
        TreeModel::Children::iterator i;
 
-       no_track_list_redisplay = true;
-
-       for (i = rows.begin(); i != rows.end(); ++i) {
-               TreeModel::Row row = (*i);
-               MixerStrip* strip = row[track_columns.strip];
+       {
+               Unwinder<bool> uw (no_track_list_redisplay, true);
 
-               if (strip == 0) {
-                       continue;
-               }
+               for (i = rows.begin(); i != rows.end(); ++i) {
+                       TreeModel::Row row = (*i);
+                       MixerStrip* strip = row[track_columns.strip];
 
-               if (strip->route()->is_master() || strip->route()->is_monitor()) {
-                       continue;
-               }
+                       if (strip == 0) {
+                               continue;
+                       }
 
-               boost::shared_ptr<AudioTrack> at = strip->audio_track();
+                       if (strip->route()->is_master() || strip->route()->is_monitor()) {
+                               continue;
+                       }
 
-               switch (tracks) {
-               case 0:
-                       (*i)[track_columns.visible] = yn;
-                       break;
+                       boost::shared_ptr<AudioTrack> at = strip->audio_track();
+                       boost::shared_ptr<MidiTrack> mt = strip->midi_track();
 
-               case 1:
-                       if (at) { /* track */
+                       switch (tracks) {
+                       case 0:
                                (*i)[track_columns.visible] = yn;
-                       }
-                       break;
+                               break;
 
-               case 2:
-                       if (!at) { /* bus */
-                               (*i)[track_columns.visible] = yn;
+                       case 1:
+                               if (at) { /* track */
+                                       (*i)[track_columns.visible] = yn;
+                               }
+                               break;
+
+                       case 2:
+                               if (!at && !mt) { /* bus */
+                                       (*i)[track_columns.visible] = yn;
+                               }
+                               break;
+
+                       case 3:
+                               if (mt) { /* midi-track */
+                                       (*i)[track_columns.visible] = yn;
+                               }
+                               break;
                        }
-                       break;
                }
        }
 
-       no_track_list_redisplay = false;
        redisplay_track_list ();
 }
 
@@ -774,52 +1016,60 @@ Mixer_UI::show_all_routes ()
 void
 Mixer_UI::show_all_audiobus ()
 {
-       set_all_audio_visibility (2, true);
+       set_all_audio_midi_visibility (2, true);
 }
 void
 Mixer_UI::hide_all_audiobus ()
 {
-       set_all_audio_visibility (2, false);
+       set_all_audio_midi_visibility (2, false);
 }
 
 void
 Mixer_UI::show_all_audiotracks()
 {
-       set_all_audio_visibility (1, true);
+       set_all_audio_midi_visibility (1, true);
 }
 void
 Mixer_UI::hide_all_audiotracks ()
 {
-       set_all_audio_visibility (1, false);
+       set_all_audio_midi_visibility (1, false);
 }
 
 void
-Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
+Mixer_UI::show_all_miditracks()
 {
-       strip_redisplay_does_not_sync_order_keys = true;
-       _session->set_remote_control_ids();
-       redisplay_track_list ();
-       strip_redisplay_does_not_sync_order_keys = false;
+       set_all_audio_midi_visibility (3, true);
+}
+void
+Mixer_UI::hide_all_miditracks ()
+{
+       set_all_audio_midi_visibility (3, false);
 }
 
+
 void
-Mixer_UI::track_list_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator&)
+Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
 {
-       // never reset order keys because of a property change
-       strip_redisplay_does_not_reset_order_keys = true;
-       _session->set_remote_control_ids();
-       redisplay_track_list ();
-       strip_redisplay_does_not_reset_order_keys = false;
+       DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
+       sync_order_keys_from_treeview ();
 }
 
 void
 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
 {
-       /* this could require an order sync */
-       if (_session && !_session->deletion_in_progress()) {
-               _session->set_remote_control_ids();
-               redisplay_track_list ();
-       }
+       /* this happens as the second step of a DnD within the treeview as well
+          as when a row/route is actually deleted.
+
+           if it was a deletion then we have to force a redisplay because
+           order keys may not have changed.
+       */
+
+       DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
+       sync_order_keys_from_treeview ();
+
+        if (_route_deletion_in_progress) {
+                redisplay_track_list ();
+        }
 }
 
 void
@@ -827,13 +1077,13 @@ Mixer_UI::redisplay_track_list ()
 {
        TreeModel::Children rows = track_model->children();
        TreeModel::Children::iterator i;
-       long order;
 
        if (no_track_list_redisplay) {
                return;
        }
 
-       for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
+       for (i = rows.begin(); i != rows.end(); ++i) {
+
                MixerStrip* strip = (*i)[track_columns.strip];
 
                if (strip == 0) {
@@ -841,10 +1091,6 @@ Mixer_UI::redisplay_track_list ()
                        continue;
                }
 
-               if (!strip_redisplay_does_not_reset_order_keys) {
-                       strip->route()->set_order_key (N_("signal"), order);
-               }
-
                bool const visible = (*i)[track_columns.visible];
 
                if (visible) {
@@ -854,6 +1100,7 @@ Mixer_UI::redisplay_track_list ()
 
                                if (strip->route()->is_master() || strip->route()->is_monitor()) {
                                        out_packer.reorder_child (*strip, -1);
+
                                } else {
                                        strip_packer.reorder_child (*strip, -1); /* put at end */
                                }
@@ -883,16 +1130,6 @@ Mixer_UI::redisplay_track_list ()
                }
        }
 
-       if (!strip_redisplay_does_not_reset_order_keys && !strip_redisplay_does_not_sync_order_keys) {
-               _session->sync_order_keys (N_("signal"));
-       }
-
-       // Resigc::bind all of the midi controls automatically
-
-       if (auto_rebinding) {
-               auto_rebind_midi_controls ();
-       }
-
        _group_tabs->set_dirty ();
 }
 
@@ -923,111 +1160,24 @@ Mixer_UI::strip_width_changed ()
 
 }
 
-void
-Mixer_UI::set_auto_rebinding( bool val )
-{
-       if( val == TRUE )
-       {
-               auto_rebinding = TRUE;
-               Session::AutoBindingOff();
-       }
-       else
-       {
-               auto_rebinding = FALSE;
-               Session::AutoBindingOn();
-       }
-}
-
-void
-Mixer_UI::toggle_auto_rebinding()
-{
-       if (auto_rebinding)
-       {
-               set_auto_rebinding( FALSE );
-       }
-
-       else
-       {
-               set_auto_rebinding( TRUE );
-       }
-
-       auto_rebind_midi_controls();
-}
-
-void
-Mixer_UI::auto_rebind_midi_controls ()
-{
-       TreeModel::Children rows = track_model->children();
-       TreeModel::Children::iterator i;
-       int pos;
-
-       // Create bindings for all visible strips and remove those that are not visible
-       pos = 1;  // 0 is reserved for the master strip
-       for (i = rows.begin(); i != rows.end(); ++i) {
-               MixerStrip* strip = (*i)[track_columns.strip];
-
-               if ( (*i)[track_columns.visible] == true ) {  // add bindings for
-                       // make the actual binding
-                       //cout<<"Auto Binding:  Visible Strip Found: "<<strip->name()<<endl;
-
-                       int controlValue = pos;
-                       if( strip->route()->is_master() ) {
-                               controlValue = 0;
-                       }
-                       else {
-                               pos++;
-                       }
-
-                       PBD::Controllable::CreateBinding ( strip->solo_button->get_controllable().get(), controlValue, 0);
-                       PBD::Controllable::CreateBinding ( strip->mute_button->get_controllable().get(), controlValue, 1);
-
-                       if( strip->is_audio_track() ) {
-                               PBD::Controllable::CreateBinding ( strip->rec_enable_button->get_controllable().get(), controlValue, 2);
-                       }
-
-                       PBD::Controllable::CreateBinding ( strip->gpm.get_controllable().get(), controlValue, 3);
-                       PBD::Controllable::CreateBinding ( strip->panners.get_controllable().get(), controlValue, 4);
-
-               }
-               else {  // Remove any existing binding
-                       PBD::Controllable::DeleteBinding ( strip->solo_button->get_controllable().get() );
-                       PBD::Controllable::DeleteBinding ( strip->mute_button->get_controllable().get() );
-
-                       if( strip->is_audio_track() ) {
-                               PBD::Controllable::DeleteBinding ( strip->rec_enable_button->get_controllable().get() );
-                       }
-
-                       PBD::Controllable::DeleteBinding ( strip->gpm.get_controllable().get() );
-                       PBD::Controllable::DeleteBinding ( strip->panners.get_controllable().get() ); // This only takes the first panner if there are multiples...
-               }
-
-       } // for
-
-}
-
-struct SignalOrderRouteSorter {
-    bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
-           /* use of ">" forces the correct sort order */
-           return a->order_key (N_("signal")) < b->order_key (N_("signal"));
-    }
-};
-
 void
 Mixer_UI::initial_track_display ()
 {
        boost::shared_ptr<RouteList> routes = _session->get_routes();
        RouteList copy (*routes);
-       SignalOrderRouteSorter sorter;
+       ARDOUR::SignalOrderRouteSorter sorter;
 
        copy.sort (sorter);
 
-       no_track_list_redisplay = true;
-
-       track_model->clear ();
+       {
+               Unwinder<bool> uw1 (no_track_list_redisplay, true);
+               Unwinder<bool> uw2 (ignore_reorder, true);
 
-       add_strip (copy);
+               track_model->clear ();
+               add_strips (copy);
+       }
 
-       no_track_list_redisplay = false;
+       _session->sync_order_keys ();
 
        redisplay_track_list ();
 }
@@ -1050,46 +1200,9 @@ Mixer_UI::track_display_button_press (GdkEventButton* ev)
                return true;
        }
 
-       TreeIter iter;
-       TreeModel::Path path;
-       TreeViewColumn* column;
-       int cellx;
-       int celly;
-
-       if (!track_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
-               return false;
-       }
-
-       switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
-       case 0:
-               /* allow normal processing to occur */
-               return false;
-
-       case 1: /* visibility */
-
-               if ((iter = track_model->get_iter (path))) {
-                       MixerStrip* strip = (*iter)[track_columns.strip];
-                       if (strip) {
-
-                               if (!strip->route()->is_master() && !strip->route()->is_monitor()) {
-                                       bool visible = (*iter)[track_columns.visible];
-                                       (*iter)[track_columns.visible] = !visible;
-                               }
-#ifdef GTKOSX
-                               track_display.queue_draw();
-#endif
-                       }
-               }
-               return true;
-
-       default:
-               break;
-       }
-
        return false;
 }
 
-
 void
 Mixer_UI::build_track_menu ()
 {
@@ -1106,6 +1219,8 @@ Mixer_UI::build_track_menu ()
        items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
        items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
        items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
+       items.push_back (MenuElem (_("Show All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::show_all_miditracks)));
+       items.push_back (MenuElem (_("Hide All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::hide_all_miditracks)));
 
 }
 
@@ -1140,12 +1255,14 @@ Mixer_UI::group_display_button_press (GdkEventButton* ev)
        int celly;
 
        if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
-               return false;
+               _group_tabs->get_menu(0)->popup (1, ev->time);
+               return true;
        }
 
        TreeIter iter = group_model->get_iter (path);
        if (!iter) {
-               return false;
+               _group_tabs->get_menu(0)->popup (1, ev->time);
+               return true;
        }
 
        RouteGroup* group = (*iter)[group_columns.group];
@@ -1208,6 +1325,14 @@ Mixer_UI::route_groups_changed ()
 
        group_model->clear ();
 
+#if 0
+       /* this is currently not used,
+        * Mixer_UI::group_display_button_press() has a case for it,
+        * and a commented edit_route_group() but that's n/a since 2011.
+        *
+        * This code is left as reminder that
+        * row[group_columns.group] = 0 has special meaning.
+        */
        {
                TreeModel::Row row;
                row = *(group_model->append());
@@ -1215,6 +1340,7 @@ Mixer_UI::route_groups_changed ()
                row[group_columns.text] = (_("-all-"));
                row[group_columns.group] = 0;
        }
+#endif
 
        _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
 
@@ -1392,7 +1518,7 @@ Mixer_UI::add_route_group (RouteGroup* group)
                focus = true;
        }
 
-       group->PropertyChanged.connect (*this, invalidator (*this), ui_bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
+       group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
 
        if (focus) {
                TreeViewColumn* col = group_display.get_column (0);
@@ -1419,12 +1545,12 @@ Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
 }
 
 void
-Mixer_UI::set_strip_width (Width w)
+Mixer_UI::set_strip_width (Width w, bool save)
 {
        _strip_width = w;
 
        for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
-               (*i)->set_width_enum (w, this);
+               (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
        }
 }
 
@@ -1501,6 +1627,19 @@ Mixer_UI::set_state (const XMLNode& node)
                }
        }
 
+       if ((prop = node.property ("maximised"))) {
+               bool yn = string_is_affirmative (prop->value());
+               Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
+               assert (act);
+               Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
+               bool fs = tact && tact->get_active();
+               if (yn ^ fs) {
+                       ActionManager::do_action ("Common",
+                                       "ToggleMaximalMixer");
+               }
+       }
+
+
        return 0;
 }
 
@@ -1543,6 +1682,8 @@ Mixer_UI::get_state (void)
 
        node->add_property ("show-mixer", _visible ? "yes" : "no");
 
+       node->add_property ("maximised", _maximised ? "yes" : "no");
+
        return *node;
 }
 
@@ -1597,7 +1738,7 @@ Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which)
                        pos = 75;
                        snprintf (buf, sizeof(buf), "%d", pos);
                } else {
-                       pos = atoi (prop->value());
+                       pos = max (36, atoi (prop->value ()));
                }
 
                if ((done[2] = GTK_WIDGET(list_hpane.gobj())->allocation.width > pos)) {
@@ -1608,6 +1749,7 @@ Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which)
 void
 Mixer_UI::scroll_left ()
 {
+       if (!scroller.get_hscrollbar()) return;
        Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
        /* stupid GTK: can't rely on clamping across versions */
        scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
@@ -1616,6 +1758,7 @@ Mixer_UI::scroll_left ()
 void
 Mixer_UI::scroll_right ()
 {
+       if (!scroller.get_hscrollbar()) return;
        Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
        /* stupid GTK: can't rely on clamping across versions */
        scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
@@ -1631,13 +1774,13 @@ Mixer_UI::on_key_press_event (GdkEventKey* ev)
        if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
                return true;
        }
-       
+
        KeyboardKey k (ev->state, ev->keyval);
-       
+
        if (bindings.activate (k, Bindings::Press)) {
                return true;
        }
-               
+
         return forward_key_press (ev);
 }
 
@@ -1649,7 +1792,7 @@ Mixer_UI::on_key_release_event (GdkEventKey* ev)
        }
 
        KeyboardKey k (ev->state, ev->keyval);
-       
+
        if (bindings.activate (k, Bindings::Release)) {
                return true;
        }
@@ -1700,10 +1843,12 @@ Mixer_UI::parameter_changed (string const & p)
                        _group_tabs->hide ();
                }
        } else if (p == "default-narrow_ms") {
-               bool const s = Config->get_default_narrow_ms ();
+               bool const s = UIConfiguration::instance().get_default_narrow_ms ();
                for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
                        (*i)->set_width_enum (s ? Narrow : Wide, this);
                }
+       } else if (p == "remote-model") {
+               reset_remote_control_ids ();
        }
 }
 
@@ -1735,18 +1880,20 @@ Mixer_UI::setup_track_display ()
        track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
        track_display.get_column (0)->set_expand(true);
        track_display.get_column (1)->set_expand(false);
-       track_display.set_name (X_("MixerTrackDisplayList"));
+       track_display.get_column (0)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
+       track_display.set_name (X_("EditGroupList"));
        track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
        track_display.set_reorderable (true);
        track_display.set_headers_visible (true);
+       track_display.set_can_focus(false);
 
        track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
-       track_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_change));
        track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
 
        CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
        track_list_visible_cell->property_activatable() = true;
        track_list_visible_cell->property_radio() = false;
+       track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
 
        track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
 
@@ -1788,7 +1935,7 @@ Mixer_UI::update_title ()
 {
        if (_session) {
                string n;
-               
+
                if (_session->snap_name() != _session->name()) {
                        n = _session->snap_name ();
                } else {
@@ -1798,14 +1945,14 @@ Mixer_UI::update_title ()
                if (_session->dirty ()) {
                        n = "*" + n;
                }
-               
+
                WindowTitle title (n);
                title += S_("Window|Mixer");
                title += Glib::get_application_name ();
                set_title (title.get_string());
 
        } else {
-               
+
                WindowTitle title (S_("Window|Mixer"));
                title += Glib::get_application_name ();
                set_title (title.get_string());
@@ -1839,14 +1986,59 @@ Mixer_UI::set_route_targets_for_operation ()
                return;
        }
 
-       /* try to get mixer strip at mouse */
+//  removed "implicit" selections of strips, after discussion on IRC
+
+}
+
+void
+Mixer_UI::monitor_section_going_away ()
+{
+       if (_monitor_section) {
+               out_packer.remove (_monitor_section->tearoff());
+               _monitor_section->set_session (0);
+       }
+}
+
+void
+Mixer_UI::toggle_midi_input_active (bool flip_others)
+{
+       boost::shared_ptr<RouteList> rl (new RouteList);
+       bool onoff = false;
+
+       set_route_targets_for_operation ();
+
+       for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
+               boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
+
+               if (mt) {
+                       rl->push_back ((*r)->route());
+                       onoff = !mt->input_active();
+               }
+       }
+
+       _session->set_exclusive_input_active (rl, onoff, flip_others);
+}
+
+void
+Mixer_UI::maximise_mixer_space ()
+{
+       if (_maximised) {
+               return;
+       }
+
+       fullscreen ();
+
+       _maximised = true;
+}
 
-       int x, y;
-       get_pointer (x, y);
-       
-       MixerStrip* ms = strip_by_x (x);
-       
-       if (ms) {
-               _route_targets.insert (ms);
+void
+Mixer_UI::restore_mixer_space ()
+{
+       if (!_maximised) {
+               return;
        }
+
+       unfullscreen();
+
+       _maximised = false;
 }