use VCA full name in strips and track headers
[ardour.git] / gtk2_ardour / editor.cc
index 49b5b5491e49b51128696b6ab4cc4ab0a47f5d8f..62ad00a1d99921bdb7ecc2c9ae995931e64e504f 100644 (file)
 #include "ardour/lmath.h"
 #include "ardour/location.h"
 #include "ardour/profile.h"
+#include "ardour/route.h"
 #include "ardour/route_group.h"
 #include "ardour/session_playlists.h"
 #include "ardour/tempo.h"
 #include "ardour/utils.h"
+#include "ardour/vca_manager.h"
+#include "ardour/vca.h"
 
 #include "canvas/debug.h"
 #include "canvas/text.h"
@@ -84,6 +87,7 @@
 
 #include "actions.h"
 #include "analysis_window.h"
+#include "ardour_spacer.h"
 #include "audio_clock.h"
 #include "audio_region_view.h"
 #include "audio_streamview.h"
 #include "region_layering_order_editor.h"
 #include "rgb_macros.h"
 #include "rhythm_ferret.h"
+#include "route_sorter.h"
 #include "selection.h"
 #include "simple_progress_dialog.h"
 #include "sfdb_ui.h"
 #include "tempo_lines.h"
 #include "time_axis_view.h"
+#include "time_info_box.h"
 #include "timers.h"
 #include "tooltips.h"
 #include "ui_config.h"
 #include "utils.h"
+#include "vca_time_axis.h"
 #include "verbose_cursor.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 using namespace std;
 using namespace ARDOUR;
@@ -212,8 +219,8 @@ static const gchar *_zoom_focus_strings[] = {
        N_("Right"),
        N_("Center"),
        N_("Playhead"),
-       N_("Mouse"),
-       N_("Edit point"),
+       N_("Mouse"),
+       N_("Edit point"),
        0
 };
 
@@ -232,35 +239,12 @@ static const gchar *_rb_opt_strings[] = {
 
 #define COMBO_TRIANGLE_WIDTH 25 // ArdourButton _diameter (11) + 2 * arrow-padding (2*2) + 2 * text-padding (2*5)
 
-static void
-pane_size_watcher (Paned* pane)
-{
-       /* if the handle of a pane vanishes into (at least) the tabs of a notebook,
-          it is:
-
-             X: hard to access
-             Quartz: impossible to access
-
-          so stop that by preventing it from ever getting too narrow. 35
-          pixels is basically a rough guess at the tab width.
-
-          ugh.
-       */
-
-       int max_width_of_lhs = GTK_WIDGET(pane->gobj())->allocation.width - 35;
-
-       gint pos = pane->get_position ();
-
-       if (pos > max_width_of_lhs) {
-               pane->set_position (max_width_of_lhs);
-       }
-}
-
 Editor::Editor ()
        : PublicEditor (global_hpacker)
        , editor_mixer_strip_width (Wide)
        , constructed (false)
        , _playlist_selector (0)
+       , _time_info_box (0)
        , no_save_visual (false)
        , leftmost_frame (0)
        , samples_per_pixel (2048)
@@ -391,7 +375,8 @@ Editor::Editor ()
        , tempo_lines (0)
        , global_rect_group (0)
        , time_line_group (0)
-       , tempo_or_meter_marker_menu (0)
+       , tempo_marker_menu (0)
+       , meter_marker_menu (0)
        , marker_menu (0)
        , range_marker_menu (0)
        , transport_marker_menu (0)
@@ -402,14 +387,12 @@ Editor::Editor ()
        , _visible_track_count (-1)
        ,  toolbar_selection_clock_table (2,3)
        ,  automation_mode_button (_("mode"))
-       ,  _toolbar_viewport (*manage (new Gtk::Adjustment (0, 0, 1e10)), *manage (new Gtk::Adjustment (0, 0, 1e10)))
        , selection (new Selection (this))
        , cut_buffer (new Selection (this))
        , _selection_memento (new SelectionMemento())
        , _all_region_actions_sensitized (false)
        , _ignore_region_action (false)
        , _last_region_menu_was_main (false)
-       , _ignore_follow_edits (false)
        , cd_marker_bar_drag_rect (0)
        , range_bar_drag_rect (0)
        , transport_bar_drag_rect (0)
@@ -436,6 +419,7 @@ Editor::Editor ()
        , show_gain_after_trim (false)
        , selection_op_cmd_depth (0)
        , selection_op_history_it (0)
+       , no_save_instant (false)
        , current_timefx (0)
        , current_mixer_strip (0)
        , show_editor_mixer_when_tracks_arrive (false)
@@ -507,6 +491,7 @@ Editor::Editor ()
 
        TimeAxisView::setup_sizes ();
        ArdourMarker::setup_sizes (timebar_height);
+       TempoCurve::setup_sizes (timebar_height);
 
        bbt_label.set_name ("EditorRulerLabel");
        bbt_label.set_size_request (-1, (int)timebar_height);
@@ -588,12 +573,11 @@ Editor::Editor ()
 
        initialize_canvas ();
 
-       CairoWidget::set_focus_handler (sigc::mem_fun (*this, &Editor::reset_focus));
+       CairoWidget::set_focus_handler (sigc::mem_fun (ARDOUR_UI::instance(), &ARDOUR_UI::reset_focus));
 
        _summary = new EditorSummary (this);
 
        selection->TimeChanged.connect (sigc::mem_fun(*this, &Editor::time_selection_changed));
-       selection->TracksChanged.connect (sigc::mem_fun(*this, &Editor::track_selection_changed));
 
        editor_regions_selection_changed_connection = selection->RegionsChanged.connect (sigc::mem_fun(*this, &Editor::region_selection_changed));
 
@@ -659,6 +643,7 @@ Editor::Editor ()
        _regions = new EditorRegions (this);
        _snapshots = new EditorSnapshots (this);
        _locations = new EditorLocations (this);
+       _time_info_box = new TimeInfoBox (true);
 
        /* these are static location signals */
 
@@ -680,7 +665,18 @@ Editor::Editor ()
 
        _notebook_shrunk = false;
 
-       editor_summary_pane.pack1(edit_packer);
+
+       /* Pick up some settings we need to cache, early */
+
+       XMLNode* settings = ARDOUR_UI::instance()->editor_settings();
+       XMLProperty* prop;
+
+       if (settings && (prop = settings->property ("notebook-shrunk"))) {
+               _notebook_shrunk = string_is_affirmative (prop->value ());
+       }
+
+       editor_summary_pane.set_check_divider_position (true);
+       editor_summary_pane.add (edit_packer);
 
        Button* summary_arrows_left_left = manage (new Button);
        summary_arrows_left_left->add (*manage (new Arrow (ARROW_LEFT, SHADOW_NONE)));
@@ -721,31 +717,62 @@ Editor::Editor ()
        _summary_hbox.pack_start (*summary_arrows_right, false, false);
 
        if (!ARDOUR::Profile->get_trx()) {
-               editor_summary_pane.pack2 (_summary_hbox);
+               editor_summary_pane.add (_summary_hbox);
        }
 
-       edit_pane.pack1 (editor_summary_pane, true, true);
+       edit_pane.set_check_divider_position (true);
+       edit_pane.add (editor_summary_pane);
        if (!ARDOUR::Profile->get_trx()) {
-               edit_pane.pack2 (_the_notebook, false, true);
+               _editor_list_vbox.pack_start (*_time_info_box, false, false, 0);
+               _editor_list_vbox.pack_start (_the_notebook);
+               edit_pane.add (_editor_list_vbox);
+               edit_pane.set_child_minsize (_editor_list_vbox, 30); /* rough guess at width of notebook tabs */
        }
 
-       editor_summary_pane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun (*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&editor_summary_pane)));
+       edit_pane.set_drag_cursor (*_cursors->expand_left_right);
+       editor_summary_pane.set_drag_cursor (*_cursors->expand_up_down);
+
+       float fract;
 
-       /* XXX: editor_summary_pane might need similar to the edit_pane */
+       {
+               LocaleGuard lg;
+
+               if (!settings || ((prop = settings->property ("edit-horizontal-pane-pos")) == 0) || ((fract = atof (prop->value())) > 1.0)) {
+                       /* initial allocation is 90% to canvas, 10% to notebook */
+                       edit_pane.set_divider (0, 0.90);
+               } else {
+                       edit_pane.set_divider (0, fract);
+               }
+
+               if (!settings || ((prop = settings->property ("edit-vertical-pane-pos")) == 0) || ((fract = atof (prop->value())) > 1.0)) {
+                       /* initial allocation is 90% to canvas, 10% to summary */
+                       editor_summary_pane.set_divider (0, 0.90);
+               } else {
+
+                       editor_summary_pane.set_divider (0, fract);
+               }
+       }
 
-       edit_pane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&edit_pane)));
+       global_vpacker.set_spacing (2);
+       global_vpacker.set_border_width (0);
 
-       Glib::PropertyProxy<int> proxy = edit_pane.property_position();
-       proxy.signal_changed().connect (bind (sigc::ptr_fun (pane_size_watcher), static_cast<Paned*> (&edit_pane)));
+       //the next three EventBoxes provide the ability for their child widgets to have a background color.  That is all.
 
-       top_hbox.pack_start (toolbar_frame);
+       Gtk::EventBox* ebox = manage (new Gtk::EventBox);  //a themeable box
+       ebox->set_name("EditorWindow");
+       ebox->add (toolbar_hbox);
 
-       HBox *hbox = manage (new HBox);
-       hbox->pack_start (edit_pane, true, true);
+       Gtk::EventBox* epane_box = manage (new Gtk::EventBox);  //a themeable box
+       epane_box->set_name("EditorWindow");
+       epane_box->add (edit_pane);
 
-       global_vpacker.pack_start (top_hbox, false, false);
-       global_vpacker.pack_start (*hbox, true, true);
-       global_hpacker.pack_start (global_vpacker, true, true);
+       Gtk::EventBox* epane_box2 = manage (new Gtk::EventBox);  //a themeable box
+       epane_box2->set_name("EditorWindow");
+       epane_box2->add (global_vpacker);
+
+       global_vpacker.pack_start (*ebox, false, false);
+       global_vpacker.pack_start (*epane_box, true, true);
+       global_hpacker.pack_start (*epane_box2, true, true);
 
        /* need to show the "contents" widget so that notebook will show if tab is switched to
         */
@@ -793,14 +820,20 @@ Editor::Editor ()
        ControlProtocol::VerticalZoomInSelected.connect (*this, invalidator (*this), boost::bind (&Editor::control_vertical_zoom_in_selected, this), gui_context());
        ControlProtocol::VerticalZoomOutSelected.connect (*this, invalidator (*this), boost::bind (&Editor::control_vertical_zoom_out_selected, this), gui_context());
 
-       ControlProtocol::AddRouteToSelection.connect (*this, invalidator (*this), boost::bind (&Editor::control_select, this, _1, Selection::Add), gui_context());
-       ControlProtocol::RemoveRouteFromSelection.connect (*this, invalidator (*this), boost::bind (&Editor::control_select, this, _1, Selection::Toggle), gui_context());
-       ControlProtocol::SetRouteSelection.connect (*this, invalidator (*this), boost::bind (&Editor::control_select, this, _1, Selection::Set), gui_context());
-       ControlProtocol::ToggleRouteSelection.connect (*this, invalidator (*this), boost::bind (&Editor::control_select, this, _1, Selection::Toggle), gui_context());
-       ControlProtocol::ClearRouteSelection.connect (*this, invalidator (*this), boost::bind (&Editor::control_unselect, this), gui_context());
+       ControlProtocol::AddStripableToSelection.connect (*this, invalidator (*this), boost::bind (&Editor::control_select, this, _1, Selection::Add), gui_context());
+       ControlProtocol::RemoveStripableFromSelection.connect (*this, invalidator (*this), boost::bind (&Editor::control_select, this, _1, Selection::Toggle), gui_context());
+       ControlProtocol::SetStripableSelection.connect (*this, invalidator (*this), boost::bind (&Editor::control_select, this, _1, Selection::Set), gui_context());
+       ControlProtocol::ToggleStripableSelection.connect (*this, invalidator (*this), boost::bind (&Editor::control_select, this, _1, Selection::Toggle), gui_context());
+       ControlProtocol::ClearStripableSelection.connect (*this, invalidator (*this), boost::bind (&Editor::control_unselect, this), gui_context());
 
        BasicUI::AccessAction.connect (*this, invalidator (*this), boost::bind (&Editor::access_action, this, _1, _2), gui_context());
 
+       PresentationInfo::Change.connect (*this, invalidator (*this), boost::bind (&Editor::presentation_info_changed, this, _1), gui_context());
+
+       /* handle escape */
+
+       ARDOUR_UI::instance()->Escape.connect (*this, invalidator (*this), boost::bind (&Editor::escape, this), gui_context());
+
        /* problematic: has to return a value and thus cannot be x-thread */
 
        Session::AskAboutPlaylistDeletion.connect_same_thread (*this, boost::bind (&Editor::playlist_deletion_dialog, this, _1));
@@ -814,8 +847,6 @@ Editor::Editor ()
        _last_region_menu_was_main = false;
        _popup_region_menu_item = 0;
 
-       _ignore_follow_edits = false;
-
        _show_marker_lines = false;
 
         /* Button bindings */
@@ -845,12 +876,13 @@ Editor::Editor ()
 
 Editor::~Editor()
 {
-        delete button_bindings;
+       delete button_bindings;
        delete _routes;
        delete _route_groups;
        delete _track_canvas_viewport;
        delete _drags;
        delete nudge_clock;
+       delete _verbose_cursor;
        delete quantize_dialog;
        delete _summary;
        delete _group_tabs;
@@ -858,10 +890,30 @@ Editor::~Editor()
        delete _snapshots;
        delete _locations;
        delete _playlist_selector;
+       delete _time_info_box;
+       delete selection;
+       delete cut_buffer;
+       delete _cursors;
+
+       LuaInstance::destroy_instance ();
 
        for (list<XMLNode *>::iterator i = selection_op_history.begin(); i != selection_op_history.end(); ++i) {
                delete *i;
        }
+       for (std::map<ARDOUR::FadeShape, Gtk::Image*>::const_iterator i = _xfade_in_images.begin(); i != _xfade_in_images.end (); ++i) {
+               delete i->second;
+       }
+       for (std::map<ARDOUR::FadeShape, Gtk::Image*>::const_iterator i = _xfade_out_images.begin(); i != _xfade_out_images.end (); ++i) {
+               delete i->second;
+       }
+}
+
+void
+Editor::presentation_info_changed (PropertyChange const & what_changed)
+{
+       if (what_changed.contains (Properties::selected)) {
+               track_selection_changed ();
+       }
 }
 
 XMLNode*
@@ -949,7 +1001,7 @@ Editor::set_entered_track (TimeAxisView* tav)
 void
 Editor::instant_save ()
 {
-       if (!constructed || !ARDOUR_UI::instance()->session_loaded) {
+       if (!constructed || !ARDOUR_UI::instance()->session_loaded || no_save_instant) {
                return;
        }
 
@@ -997,23 +1049,9 @@ Editor::control_unselect ()
 }
 
 void
-Editor::control_select (uint32_t rid, Selection::Operation op)
+Editor::control_select (boost::shared_ptr<Stripable> s, Selection::Operation op)
 {
-       /* handles the (static) signal from the ControlProtocol class that
-        * requests setting the selected track to a given RID
-        */
-
-       if (!_session) {
-               return;
-       }
-
-       boost::shared_ptr<Route> r = _session->route_by_remote_id (rid);
-
-       if (!r) {
-               return;
-       }
-
-       TimeAxisView* tav = axis_view_from_route (r);
+       TimeAxisView* tav = axis_view_from_stripable (s);
 
        if (tav) {
                switch (op) {
@@ -1179,7 +1217,7 @@ Editor::generic_event_handler (GdkEvent* ev)
                        /* leaving window, so reset focus, thus ending any and
                           all text entry operations.
                        */
-                       reset_focus (&contents());
+                       ARDOUR_UI::instance()->reset_focus (&contents());
                        break;
                }
                break;
@@ -1309,6 +1347,7 @@ Editor::set_session (Session *t)
        _snapshots->set_session (_session);
        _routes->set_session (_session);
        _locations->set_session (_session);
+       _time_info_box->set_session (_session);
 
        if (rhythm_ferret) {
                rhythm_ferret->set_session (_session);
@@ -1361,9 +1400,11 @@ Editor::set_session (Session *t)
        _session->StepEditStatusChange.connect (_session_connections, invalidator (*this), boost::bind (&Editor::step_edit_status_change, this, _1), gui_context());
        _session->TransportStateChange.connect (_session_connections, invalidator (*this), boost::bind (&Editor::map_transport_state, this), gui_context());
        _session->PositionChanged.connect (_session_connections, invalidator (*this), boost::bind (&Editor::map_position_change, this, _1), gui_context());
+       _session->vca_manager().VCAAdded.connect (_session_connections, invalidator (*this), boost::bind (&Editor::add_vcas, this, _1), gui_context());
        _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Editor::add_routes, this, _1), gui_context());
        _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Editor::update_title, this), gui_context());
        _session->tempo_map().PropertyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Editor::tempo_map_changed, this, _1), gui_context());
+       _session->tempo_map().MetricPositionChanged.connect (_session_connections, invalidator (*this), boost::bind (&Editor::tempometric_position_changed, this, _1), gui_context());
        _session->Located.connect (_session_connections, invalidator (*this), boost::bind (&Editor::located, this), gui_context());
        _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Editor::parameter_changed, this, _1), gui_context());
        _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Editor::session_state_saved, this, _1), gui_context());
@@ -1402,6 +1443,25 @@ Editor::set_session (Session *t)
                break;
        }
 
+       /* catch up on selection of stripables (other selection state is lost
+        * when a session is closed
+        */
+
+       StripableList sl;
+       TrackViewList tl;
+       _session->get_stripables (sl);
+       for (StripableList::const_iterator s = sl.begin(); s != sl.end(); ++s) {
+               if ((*s)->presentation_info().selected()) {
+                       RouteTimeAxisView* rtav = get_route_view_by_route_id ((*s)->id());
+                       if (rtav) {
+                               tl.push_back (rtav);
+                       }
+               }
+       }
+       if (!tl.empty()) {
+               selection->set (tl);
+       }
+
        /* register for undo history */
        _session->register_with_memento_command_factory(id(), this);
        _session->register_with_memento_command_factory(_selection_memento->id(), _selection_memento);
@@ -1669,7 +1729,7 @@ Editor::build_track_context_menu ()
 {
        using namespace Menu_Helpers;
 
-       MenuList& edit_items = track_context_menu.items();
+       MenuList& edit_items = track_context_menu.items();
        edit_items.clear();
 
        add_dstream_context_items (edit_items);
@@ -1681,7 +1741,7 @@ Editor::build_track_bus_context_menu ()
 {
        using namespace Menu_Helpers;
 
-       MenuList& edit_items = track_context_menu.items();
+       MenuList& edit_items = track_context_menu.items();
        edit_items.clear();
 
        add_bus_context_items (edit_items);
@@ -1923,7 +1983,7 @@ Editor::add_selection_context_items (Menu_Helpers::MenuList& edit_items)
        edit_items.push_back (MenuElem (_("Loop Range"), sigc::bind (sigc::mem_fun(*this, &Editor::set_loop_from_selection), true)));
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Zoom to Range"), sigc::bind (sigc::mem_fun(*this, &Editor::temporal_zoom_selection), false)));
+       edit_items.push_back (MenuElem (_("Zoom to Range"), sigc::bind (sigc::mem_fun(*this, &Editor::temporal_zoom_selection), Horizontal)));
 
        edit_items.push_back (SeparatorElem());
        edit_items.push_back (MenuElem (_("Loudness Analysis"), sigc::mem_fun(*this, &Editor::loudness_analyze_range_selection)));
@@ -2134,6 +2194,37 @@ Editor::snap_type() const
        return _snap_type;
 }
 
+bool
+Editor::snap_musical() const
+{
+       switch (_snap_type) {
+       case SnapToBeatDiv128:
+       case SnapToBeatDiv64:
+       case SnapToBeatDiv32:
+       case SnapToBeatDiv28:
+       case SnapToBeatDiv24:
+       case SnapToBeatDiv20:
+       case SnapToBeatDiv16:
+       case SnapToBeatDiv14:
+       case SnapToBeatDiv12:
+       case SnapToBeatDiv10:
+       case SnapToBeatDiv8:
+       case SnapToBeatDiv7:
+       case SnapToBeatDiv6:
+       case SnapToBeatDiv5:
+       case SnapToBeatDiv4:
+       case SnapToBeatDiv3:
+       case SnapToBeatDiv2:
+       case SnapToBeat:
+       case SnapToBar:
+               return true;
+       default:
+               break;
+       }
+
+       return false;
+}
+
 SnapMode
 Editor::snap_mode() const
 {
@@ -2184,14 +2275,8 @@ Editor::set_snap_to (SnapType st)
        case SnapToBeatDiv4:
        case SnapToBeatDiv3:
        case SnapToBeatDiv2: {
-               ARDOUR::TempoMap::BBTPointList::const_iterator current_bbt_points_begin;
-               ARDOUR::TempoMap::BBTPointList::const_iterator current_bbt_points_end;
-
-               compute_current_bbt_points (leftmost_frame, leftmost_frame + current_page_samples(),
-                                           current_bbt_points_begin, current_bbt_points_end);
-               compute_bbt_ruler_scale (leftmost_frame, leftmost_frame + current_page_samples(),
-                                        current_bbt_points_begin, current_bbt_points_end);
-               update_tempo_based_rulers (current_bbt_points_begin, current_bbt_points_end);
+               compute_bbt_ruler_scale (leftmost_frame, leftmost_frame + current_page_samples());
+               update_tempo_based_rulers ();
                break;
        }
 
@@ -2289,6 +2374,8 @@ Editor::set_state (const XMLNode& node, int version)
 {
        XMLProperty const * prop;
        set_id (node);
+       PBD::Unwinder<bool> nsi (no_save_instant, true);
+       LocaleGuard lg;
 
        Tabbable::set_state (node, version);
 
@@ -2311,6 +2398,8 @@ Editor::set_state (const XMLNode& node, int version)
 
        if ((prop = node.property ("zoom-focus"))) {
                zoom_focus_selection_done ((ZoomFocus) string_2_enum (prop->value(), zoom_focus));
+       } else {
+               zoom_focus_selection_done (zoom_focus);
        }
 
        if ((prop = node.property ("zoom"))) {
@@ -2327,10 +2416,20 @@ Editor::set_state (const XMLNode& node, int version)
 
        if ((prop = node.property ("snap-to"))) {
                snap_type_selection_done ((SnapType) string_2_enum (prop->value(), _snap_type));
+               set_snap_to ((SnapType) string_2_enum (prop->value(), _snap_type));
+       } else {
+               set_snap_to (_snap_type);
        }
 
        if ((prop = node.property ("snap-mode"))) {
                snap_mode_selection_done((SnapMode) string_2_enum (prop->value(), _snap_mode));
+               /* set text of Dropdown. in case _snap_mode == SnapOff (default)
+                * snap_mode_selection_done() will only mark an already active item as active
+                * which does not trigger set_text().
+                */
+               set_snap_mode ((SnapMode) string_2_enum (prop->value(), _snap_mode));
+       } else {
+               set_snap_mode (_snap_mode);
        }
 
        if ((prop = node.property ("internal-snap-to"))) {
@@ -2383,6 +2482,8 @@ Editor::set_state (const XMLNode& node, int version)
 
        if ((prop = node.property ("edit-point"))) {
                set_edit_point_preference ((EditPoint) string_2_enum (prop->value(), _edit_point), true);
+       } else {
+               set_edit_point_preference (_edit_point);
        }
 
        if ((prop = node.property ("show-measures"))) {
@@ -2517,16 +2618,17 @@ Editor::get_state ()
 {
        XMLNode* node = new XMLNode (X_("Editor"));
        char buf[32];
+       LocaleGuard lg;
 
        id().print (buf, sizeof (buf));
        node->add_property ("id", buf);
 
        node->add_child_nocopy (Tabbable::get_state());
 
-       snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&edit_pane)->gobj()));
+       snprintf(buf,sizeof(buf), "%f", edit_pane.get_divider ());
        node->add_property("edit-horizontal-pane-pos", string(buf));
        node->add_property("notebook-shrunk", _notebook_shrunk ? "1" : "0");
-       snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&editor_summary_pane)->gobj()));
+       snprintf(buf,sizeof(buf), "%f", editor_summary_pane.get_divider());
        node->add_property("edit-vertical-pane-pos", string(buf));
 
        maybe_add_mixer_strip_width (*node);
@@ -2665,18 +2767,18 @@ Editor::snap_to (framepos_t& start, RoundMode direction, bool for_mark, bool ens
 void
 Editor::timecode_snap_to_internal (framepos_t& start, RoundMode direction, bool /*for_mark*/)
 {
-       const framepos_t one_timecode_second = (framepos_t)(rint(_session->timecode_frames_per_second()) * _session->frames_per_timecode_frame());
-       framepos_t one_timecode_minute = (framepos_t)(rint(_session->timecode_frames_per_second()) * _session->frames_per_timecode_frame() * 60);
+       const framepos_t one_timecode_second = (framepos_t)(rint(_session->timecode_frames_per_second()) * _session->samples_per_timecode_frame());
+       framepos_t one_timecode_minute = (framepos_t)(rint(_session->timecode_frames_per_second()) * _session->samples_per_timecode_frame() * 60);
 
        switch (_snap_type) {
        case SnapToTimecodeFrame:
                if ((direction == RoundUpMaybe || direction == RoundDownMaybe) &&
-                   fmod((double)start, (double)_session->frames_per_timecode_frame()) == 0) {
+                   fmod((double)start, (double)_session->samples_per_timecode_frame()) == 0) {
                        /* start is already on a whole timecode frame, do nothing */
-               } else if (((direction == 0) && (fmod((double)start, (double)_session->frames_per_timecode_frame()) > (_session->frames_per_timecode_frame() / 2))) || (direction > 0)) {
-                       start = (framepos_t) (ceil ((double) start / _session->frames_per_timecode_frame()) * _session->frames_per_timecode_frame());
+               } else if (((direction == 0) && (fmod((double)start, (double)_session->samples_per_timecode_frame()) > (_session->samples_per_timecode_frame() / 2))) || (direction > 0)) {
+                       start = (framepos_t) (ceil ((double) start / _session->samples_per_timecode_frame()) * _session->samples_per_timecode_frame());
                } else {
-                       start = (framepos_t) (floor ((double) start / _session->frames_per_timecode_frame()) *  _session->frames_per_timecode_frame());
+                       start = (framepos_t) (floor ((double) start / _session->samples_per_timecode_frame()) *  _session->samples_per_timecode_frame());
                }
                break;
 
@@ -2785,55 +2887,55 @@ Editor::snap_to_internal (framepos_t& start, RoundMode direction, bool for_mark,
                break;
 
        case SnapToBeatDiv128:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 128, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 128, direction);
                break;
        case SnapToBeatDiv64:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 64, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 64, direction);
                break;
        case SnapToBeatDiv32:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 32, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 32, direction);
                break;
        case SnapToBeatDiv28:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 28, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 28, direction);
                break;
        case SnapToBeatDiv24:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 24, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 24, direction);
                break;
        case SnapToBeatDiv20:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 20, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 20, direction);
                break;
        case SnapToBeatDiv16:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 16, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 16, direction);
                break;
        case SnapToBeatDiv14:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 14, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 14, direction);
                break;
        case SnapToBeatDiv12:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 12, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 12, direction);
                break;
        case SnapToBeatDiv10:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 10, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 10, direction);
                break;
        case SnapToBeatDiv8:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 8, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 8, direction);
                break;
        case SnapToBeatDiv7:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 7, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 7, direction);
                break;
        case SnapToBeatDiv6:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 6, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 6, direction);
                break;
        case SnapToBeatDiv5:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 5, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 5, direction);
                break;
        case SnapToBeatDiv4:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 4, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 4, direction);
                break;
        case SnapToBeatDiv3:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 3, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 3, direction);
                break;
        case SnapToBeatDiv2:
-               start = _session->tempo_map().round_to_beat_subdivision (start, 2, direction);
+               start = _session->tempo_map().round_to_quarter_note_subdivision (start, 2, direction);
                break;
 
        case SnapToMark:
@@ -2851,11 +2953,16 @@ Editor::snap_to_internal (framepos_t& start, RoundMode direction, bool for_mark,
                } else if (after == max_framepos) {
                        start = before;
                } else if (before != max_framepos && after != max_framepos) {
-                       /* have before and after */
-                       if ((start - before) < (after - start)) {
-                               start = before;
-                       } else {
+                       if ((direction == RoundUpMaybe || direction == RoundUpAlways))
                                start = after;
+                       else if ((direction == RoundDownMaybe || direction == RoundDownAlways))
+                               start = before;
+                       else if (direction ==  0 ) {
+                               if ((start - before) < (after - start)) {
+                                       start = before;
+                               } else {
+                                       start = after;
+                               }
                        }
                }
 
@@ -2944,15 +3051,17 @@ Editor::setup_toolbar ()
        mouse_mode_size_group->add_widget (mouse_draw_button);
        mouse_mode_size_group->add_widget (mouse_content_button);
 
-       mouse_mode_size_group->add_widget (zoom_in_button);
-       mouse_mode_size_group->add_widget (zoom_out_button);
-       mouse_mode_size_group->add_widget (zoom_preset_selector);
-       mouse_mode_size_group->add_widget (zoom_out_full_button);
-       mouse_mode_size_group->add_widget (zoom_focus_selector);
-
-       mouse_mode_size_group->add_widget (tav_shrink_button);
-       mouse_mode_size_group->add_widget (tav_expand_button);
-       mouse_mode_size_group->add_widget (visible_tracks_selector);
+       if (!Profile->get_mixbus()) {
+               mouse_mode_size_group->add_widget (zoom_in_button);
+               mouse_mode_size_group->add_widget (zoom_out_button);
+               mouse_mode_size_group->add_widget (zoom_out_full_button);
+               mouse_mode_size_group->add_widget (zoom_focus_selector);
+               mouse_mode_size_group->add_widget (tav_shrink_button);
+               mouse_mode_size_group->add_widget (tav_expand_button);
+       } else {
+               mouse_mode_size_group->add_widget (zoom_preset_selector);
+               mouse_mode_size_group->add_widget (visible_tracks_selector);
+       }
 
        mouse_mode_size_group->add_widget (snap_type_selector);
        mouse_mode_size_group->add_widget (snap_mode_selector);
@@ -3007,8 +3116,7 @@ Editor::setup_toolbar ()
        RefPtr<Action> act;
 
        zoom_preset_selector.set_name ("zoom button");
-       zoom_preset_selector.set_image(::get_icon ("time_exp"));
-       zoom_preset_selector.set_size_request (42, -1);
+       zoom_preset_selector.set_icon (ArdourIcon::ZoomExpand);
 
        zoom_in_button.set_name ("zoom button");
        zoom_in_button.set_icon (ArdourIcon::ZoomIn);
@@ -3040,10 +3148,12 @@ Editor::setup_toolbar ()
        }
 
        /* Track zoom buttons */
+       _track_box.set_spacing (2);
+       _track_box.set_border_width (2);
+
        visible_tracks_selector.set_name ("zoom button");
        if (Profile->get_mixbus()) {
-               visible_tracks_selector.set_image(::get_icon ("tav_exp"));
-               visible_tracks_selector.set_size_request (42, -1);
+               visible_tracks_selector.set_icon (ArdourIcon::TimeAxisExpand);
        } else {
                set_size_request_to_display_given_text (visible_tracks_selector, _("All"), 30, 2);
        }
@@ -3059,14 +3169,14 @@ Editor::setup_toolbar ()
        tav_shrink_button.set_related_action (act);
 
        if (ARDOUR::Profile->get_mixbus()) {
-               _zoom_box.pack_start (visible_tracks_selector);
+               _track_box.pack_start (visible_tracks_selector);
        } else if (ARDOUR::Profile->get_trx()) {
-               _zoom_box.pack_start (tav_shrink_button);
-               _zoom_box.pack_start (tav_expand_button);
+               _track_box.pack_start (tav_shrink_button);
+               _track_box.pack_start (tav_expand_button);
        } else {
-               _zoom_box.pack_start (visible_tracks_selector);
-               _zoom_box.pack_start (tav_shrink_button);
-               _zoom_box.pack_start (tav_expand_button);
+               _track_box.pack_start (visible_tracks_selector);
+               _track_box.pack_start (tav_shrink_button);
+               _track_box.pack_start (tav_expand_button);
        }
 
        snap_box.set_spacing (2);
@@ -3080,7 +3190,13 @@ Editor::setup_toolbar ()
 
        snap_box.pack_start (snap_mode_selector, false, false);
        snap_box.pack_start (snap_type_selector, false, false);
-       snap_box.pack_start (edit_point_selector, false, false);
+
+       /* Edit Point*/
+       HBox *ep_box = manage (new HBox);
+       ep_box->set_spacing (2);
+       ep_box->set_border_width (2);
+
+       ep_box->pack_start (edit_point_selector, false, false);
 
        /* Nudge */
 
@@ -3098,35 +3214,35 @@ Editor::setup_toolbar ()
 
        /* Pack everything in... */
 
-       HBox* hbox = manage (new HBox);
-       hbox->set_spacing(2);
-
        toolbar_hbox.set_spacing (2);
-       toolbar_hbox.set_border_width (1);
+       toolbar_hbox.set_border_width (2);
 
        toolbar_hbox.pack_start (*mode_box, false, false);
+
        if (!ARDOUR::Profile->get_trx()) {
+
+               toolbar_hbox.pack_start (*(manage (new ArdourVSpacer ())), false, false, 3);
+
                toolbar_hbox.pack_start (_zoom_box, false, false);
-               toolbar_hbox.pack_start (*hbox, false, false);
-       }
 
-       if (!ARDOUR::Profile->get_trx()) {
-               hbox->pack_start (snap_box, false, false);
-               hbox->pack_start (*nudge_box, false, false);
-       }
+               toolbar_hbox.pack_start (*(manage (new ArdourVSpacer ())), false, false, 3);
+
+               toolbar_hbox.pack_start (_track_box, false, false);
+
+               toolbar_hbox.pack_start (*(manage (new ArdourVSpacer ())), false, false, 3);
+
+               toolbar_hbox.pack_start (snap_box, false, false);
+
+               toolbar_hbox.pack_start (*(manage (new ArdourVSpacer ())), false, false, 3);
 
-       hbox->show_all ();
+               toolbar_hbox.pack_start (*ep_box, false, false);
 
-       toolbar_base.set_name ("ToolBarBase");
-       toolbar_base.add (toolbar_hbox);
+               toolbar_hbox.pack_start (*(manage (new ArdourVSpacer ())), false, false, 3);
 
-       _toolbar_viewport.add (toolbar_base);
-       /* stick to the required height but allow width to vary if there's not enough room */
-       _toolbar_viewport.set_size_request (1, -1);
+               toolbar_hbox.pack_start (*nudge_box, false, false);
+       }
 
-       toolbar_frame.set_shadow_type (SHADOW_OUT);
-       toolbar_frame.set_name ("BaseFrame");
-       toolbar_frame.add (_toolbar_viewport);
+       toolbar_hbox.show_all ();
 }
 
 void
@@ -3728,7 +3844,7 @@ Editor::build_track_count_menu ()
                zoom_preset_selector.AddMenuElem (MenuElem (_("Zoom to 8 hours"), sigc::bind (sigc::mem_fun(*this, &Editor::set_zoom_preset), 8 * 60 * 60 * 1000)));
                zoom_preset_selector.AddMenuElem (MenuElem (_("Zoom to 24 hours"), sigc::bind (sigc::mem_fun(*this, &Editor::set_zoom_preset), 24 * 60 * 60 * 1000)));
                zoom_preset_selector.AddMenuElem (MenuElem (_("Zoom to Session"), sigc::mem_fun(*this, &Editor::temporal_zoom_session)));
-               zoom_preset_selector.AddMenuElem (MenuElem (_("Zoom to Range/Region Selection"), sigc::bind (sigc::mem_fun(*this, &Editor::temporal_zoom_selection), false)));
+               zoom_preset_selector.AddMenuElem (MenuElem (_("Zoom to Range/Region Selection"), sigc::bind (sigc::mem_fun(*this, &Editor::temporal_zoom_selection), Horizontal)));
        }
 }
 
@@ -3865,74 +3981,6 @@ Editor::cycle_zoom_focus ()
        }
 }
 
-void
-Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
-{
-       /* recover or initialize pane positions. do this here rather than earlier because
-          we don't want the positions to change the child allocations, which they seem to do.
-        */
-
-       int pos;
-       XMLProperty const * prop;
-       char buf[32];
-       XMLNode* node = ARDOUR_UI::instance()->editor_settings();
-
-       enum Pane {
-               Horizontal = 0x1,
-               Vertical = 0x2
-       };
-
-       static Pane done;
-
-       XMLNode* geometry = find_named_node (*node, "geometry");
-
-       if (which == static_cast<Paned*> (&edit_pane)) {
-
-               if (done & Horizontal) {
-                       return;
-               }
-
-               if (geometry && (prop = geometry->property ("notebook-shrunk"))) {
-                       _notebook_shrunk = string_is_affirmative (prop->value ());
-               }
-
-               if (!geometry || (prop = geometry->property ("edit-horizontal-pane-pos")) == 0) {
-                       /* initial allocation is 90% to canvas, 10% to notebook */
-                       pos = (int) floor (alloc.get_width() * 0.90f);
-                       snprintf (buf, sizeof(buf), "%d", pos);
-               } else {
-                       pos = atoi (prop->value());
-               }
-
-               if (GTK_WIDGET(edit_pane.gobj())->allocation.width > pos) {
-                       edit_pane.set_position (pos);
-               }
-
-               done = (Pane) (done | Horizontal);
-
-       } else if (which == static_cast<Paned*> (&editor_summary_pane)) {
-
-               if (done & Vertical) {
-                       return;
-               }
-
-               if (!geometry || (prop = geometry->property ("edit-vertical-pane-pos")) == 0) {
-                       /* initial allocation is 90% to canvas, 10% to summary */
-                       pos = (int) floor (alloc.get_height() * 0.90f);
-                       snprintf (buf, sizeof(buf), "%d", pos);
-               } else {
-
-                       pos = atoi (prop->value());
-               }
-
-               if (GTK_WIDGET(editor_summary_pane.gobj())->allocation.height > pos) {
-                       editor_summary_pane.set_position (pos);
-               }
-
-               done = (Pane) (done | Vertical);
-       }
-}
-
 void
 Editor::set_show_measures (bool yn)
 {
@@ -3944,11 +3992,9 @@ Editor::set_show_measures (bool yn)
                                tempo_lines->show();
                        }
 
-                       ARDOUR::TempoMap::BBTPointList::const_iterator begin;
-                       ARDOUR::TempoMap::BBTPointList::const_iterator end;
-
-                       compute_current_bbt_points (leftmost_frame, leftmost_frame + current_page_samples(), begin, end);
-                       draw_measures (begin, end);
+                       std::vector<TempoMap::BBTPoint> grid;
+                       compute_current_bbt_points (grid, leftmost_frame, leftmost_frame + current_page_samples());
+                       draw_measures (grid);
                }
 
                instant_save ();
@@ -4054,6 +4100,47 @@ Editor::get_grid_beat_divisions(framepos_t position)
        return 0;
 }
 
+/** returns the current musical grid divisiions using the supplied modifier mask from a GtkEvent.
+    if the grid is non-musical, returns 0.
+    if the grid is snapped to bars, returns -1.
+    @param event_state the current keyboard modifier mask.
+*/
+int32_t
+Editor::get_grid_music_divisions (uint32_t event_state)
+{
+       if (snap_mode() == Editing::SnapOff && !ArdourKeyboard::indicates_snap (event_state)) {
+               return 0;
+       }
+
+       if (snap_mode() != Editing::SnapOff && ArdourKeyboard::indicates_snap (event_state)) {
+               return 0;
+       }
+
+       switch (_snap_type) {
+       case SnapToBeatDiv128: return 128;
+       case SnapToBeatDiv64:  return 64;
+       case SnapToBeatDiv32:  return 32;
+       case SnapToBeatDiv28:  return 28;
+       case SnapToBeatDiv24:  return 24;
+       case SnapToBeatDiv20:  return 20;
+       case SnapToBeatDiv16:  return 16;
+       case SnapToBeatDiv14:  return 14;
+       case SnapToBeatDiv12:  return 12;
+       case SnapToBeatDiv10:  return 10;
+       case SnapToBeatDiv8:   return 8;
+       case SnapToBeatDiv7:   return 7;
+       case SnapToBeatDiv6:   return 6;
+       case SnapToBeatDiv5:   return 5;
+       case SnapToBeatDiv4:   return 4;
+       case SnapToBeatDiv3:   return 3;
+       case SnapToBeatDiv2:   return 2;
+       case SnapToBeat:       return 1;
+       case SnapToBar :       return -1;
+       default:               return 0;
+       }
+       return 0;
+}
+
 Evoral::Beats
 Editor::get_grid_type_as_beats (bool& success, framepos_t position)
 {
@@ -4066,10 +4153,11 @@ Editor::get_grid_type_as_beats (bool& success, framepos_t position)
 
        switch (_snap_type) {
        case SnapToBeat:
-               return Evoral::Beats(1.0);
+               return Evoral::Beats(4.0 / _session->tempo_map().meter_at_frame (position).note_divisor());
        case SnapToBar:
                if (_session) {
-                       return Evoral::Beats(_session->tempo_map().meter_at (position).divisions_per_bar());
+                       const Meter& m = _session->tempo_map().meter_at_frame (position);
+                       return Evoral::Beats((4.0 * m.divisions_per_bar()) / m.note_divisor());
                }
                break;
        default:
@@ -4254,7 +4342,7 @@ Editor::new_playlists (TimeAxisView* v)
        begin_reversible_command (_("new playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
        _session->playlists->get (playlists);
-       mapover_tracks (sigc::bind (sigc::mem_fun (*this, &Editor::mapped_use_new_playlist), playlists), v, ARDOUR::Properties::select.property_id);
+       mapover_tracks (sigc::bind (sigc::mem_fun (*this, &Editor::mapped_use_new_playlist), playlists), v, ARDOUR::Properties::group_select.property_id);
        commit_reversible_command ();
 }
 
@@ -4270,7 +4358,7 @@ Editor::copy_playlists (TimeAxisView* v)
        begin_reversible_command (_("copy playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
        _session->playlists->get (playlists);
-       mapover_tracks (sigc::bind (sigc::mem_fun (*this, &Editor::mapped_use_copy_playlist), playlists), v, ARDOUR::Properties::select.property_id);
+       mapover_tracks (sigc::bind (sigc::mem_fun (*this, &Editor::mapped_use_copy_playlist), playlists), v, ARDOUR::Properties::group_select.property_id);
        commit_reversible_command ();
 }
 
@@ -4285,20 +4373,20 @@ Editor::clear_playlists (TimeAxisView* v)
        begin_reversible_command (_("clear playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
        _session->playlists->get (playlists);
-       mapover_tracks (sigc::mem_fun (*this, &Editor::mapped_clear_playlist), v, ARDOUR::Properties::select.property_id);
+       mapover_tracks (sigc::mem_fun (*this, &Editor::mapped_clear_playlist), v, ARDOUR::Properties::group_select.property_id);
        commit_reversible_command ();
 }
 
 void
 Editor::mapped_use_new_playlist (RouteTimeAxisView& atv, uint32_t sz, vector<boost::shared_ptr<ARDOUR::Playlist> > const & playlists)
 {
-       atv.use_new_playlist (sz > 1 ? false : true, playlists);
+       atv.use_new_playlist (sz > 1 ? false : true, playlists, false);
 }
 
 void
 Editor::mapped_use_copy_playlist (RouteTimeAxisView& atv, uint32_t sz, vector<boost::shared_ptr<ARDOUR::Playlist> > const & playlists)
 {
-       atv.use_copy_playlist (sz > 1 ? false : true, playlists);
+       atv.use_new_playlist (sz > 1 ? false : true, playlists, true);
 }
 
 void
@@ -4375,7 +4463,7 @@ Editor::current_visual_state (bool with_tracks)
        vs->zoom_focus = zoom_focus;
 
        if (with_tracks) {
-               *vs->gui_state = *ARDOUR_UI::instance()->gui_object_state;
+               vs->gui_state->set_state (ARDOUR_UI::instance()->gui_object_state->get_state());
        }
 
        return vs;
@@ -4440,7 +4528,7 @@ Editor::use_visual_state (VisualState& vs)
        reposition_and_zoom (vs.leftmost_frame, vs.samples_per_pixel);
 
        if (vs.gui_state) {
-               *ARDOUR_UI::instance()->gui_object_state = *vs.gui_state;
+               ARDOUR_UI::instance()->gui_object_state->set_state (vs.gui_state->get_state());
 
                for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
                        (*i)->clear_property_cache();
@@ -4508,6 +4596,12 @@ Editor::set_samples_per_pixel (framecnt_t spp)
        instant_save ();
 }
 
+framepos_t
+Editor::playhead_cursor_sample () const
+{
+       return playhead_cursor->current_frame();
+}
+
 void
 Editor::queue_visual_videotimeline_update ()
 {
@@ -4574,14 +4668,8 @@ Editor::visual_changer (const VisualChange& vc)
 
                compute_fixed_ruler_scale ();
 
-               ARDOUR::TempoMap::BBTPointList::const_iterator current_bbt_points_begin;
-               ARDOUR::TempoMap::BBTPointList::const_iterator current_bbt_points_end;
-
-               compute_current_bbt_points (vc.time_origin, pending_visual_change.time_origin + current_page_samples(),
-                                           current_bbt_points_begin, current_bbt_points_end);
-               compute_bbt_ruler_scale (vc.time_origin, pending_visual_change.time_origin + current_page_samples(),
-                                        current_bbt_points_begin, current_bbt_points_end);
-               update_tempo_based_rulers (current_bbt_points_begin, current_bbt_points_end);
+               compute_bbt_ruler_scale (vc.time_origin, pending_visual_change.time_origin + current_page_samples());
+               update_tempo_based_rulers ();
 
                update_video_timeline();
        }
@@ -4627,9 +4715,11 @@ Editor::get_preferred_edit_position (EditIgnoreOption ignore, bool from_context_
        framepos_t where = 0;
        EditPoint ep = _edit_point;
 
-       if (Profile->get_mixbus())
-               if (ep == EditAtSelectedMarker)
+       if (Profile->get_mixbus()) {
+               if (ep == EditAtSelectedMarker) {
                        ep = EditAtPlayhead;
+               }
+       }
 
        if (from_outside_canvas && (ep == EditAtMouse)) {
                ep = EditAtPlayhead;
@@ -4700,7 +4790,7 @@ Editor::set_loop_range (framepos_t start, framepos_t end, string cmd)
        Location* tll;
 
        if ((tll = transport_loop_location()) == 0) {
-               Location* loc = new Location (*_session, start, end, _("Loop"),  Location::IsAutoLoop);
+               Location* loc = new Location (*_session, start, end, _("Loop"),  Location::IsAutoLoop, get_grid_music_divisions(0));
                XMLNode &before = _session->locations()->get_state();
                _session->locations()->add (loc, true);
                _session->set_auto_loop_location (loc);
@@ -4727,7 +4817,7 @@ Editor::set_punch_range (framepos_t start, framepos_t end, string cmd)
        Location* tpl;
 
        if ((tpl = transport_punch_location()) == 0) {
-               Location* loc = new Location (*_session, start, end, _("Punch"),  Location::IsAutoPunch);
+               Location* loc = new Location (*_session, start, end, _("Punch"),  Location::IsAutoPunch, get_grid_music_divisions(0));
                XMLNode &before = _session->locations()->get_state();
                _session->locations()->add (loc, true);
                _session->set_auto_punch_location (loc);
@@ -5015,7 +5105,7 @@ Editor::first_idle ()
                        true
                        );
                dialog->present ();
-               ARDOUR_UI::instance()->flush_pending ();
+               ARDOUR_UI::instance()->flush_pending (60);
        }
 
        for (TrackViewList::iterator t = track_views.begin(); t != track_views.end(); ++t) {
@@ -5132,7 +5222,7 @@ Editor::region_view_added (RegionView * rv)
 
        MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (rv);
        if (mrv) {
-               list<pair<PBD::ID const, list<boost::shared_ptr<Evoral::Note<Evoral::Beats> > > > >::iterator rnote;
+               list<pair<PBD::ID const, list<Evoral::event_id_t> > >::iterator rnote;
                for (rnote = selection->pending_midi_note_selection.begin(); rnote != selection->pending_midi_note_selection.end(); ++rnote) {
                        if (rv->region()->id () == (*rnote).first) {
                                mrv->select_notes ((*rnote).second);
@@ -5151,16 +5241,13 @@ Editor::region_view_removed ()
        _summary->set_background_dirty ();
 }
 
-RouteTimeAxisView*
-Editor::axis_view_from_route (boost::shared_ptr<Route> r) const
+TimeAxisView*
+Editor::axis_view_from_stripable (boost::shared_ptr<Stripable> s) const
 {
-       TrackViewList::const_iterator j = track_views.begin ();
-       while (j != track_views.end()) {
-               RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*j);
-               if (rtv && rtv->route() == r) {
-                       return rtv;
+       for (TrackViewList::const_iterator j = track_views.begin (); j != track_views.end(); ++j) {
+               if ((*j)->stripable() == s) {
+                       return *j;
                }
-               ++j;
        }
 
        return 0;
@@ -5173,7 +5260,7 @@ Editor::axis_views_from_routes (boost::shared_ptr<RouteList> r) const
        TrackViewList t;
 
        for (RouteList::const_iterator i = r->begin(); i != r->end(); ++i) {
-               TimeAxisView* tv = axis_view_from_route (*i);
+               TimeAxisView* tv = axis_view_from_stripable (*i);
                if (tv) {
                        t.push_back (tv);
                }
@@ -5200,56 +5287,94 @@ Editor::resume_route_redisplay ()
 }
 
 void
-Editor::add_routes (RouteList& routes)
+Editor::add_vcas (VCAList& vlist)
+{
+       StripableList sl;
+
+       for (VCAList::iterator v = vlist.begin(); v != vlist.end(); ++v) {
+               sl.push_back (boost::dynamic_pointer_cast<Stripable> (*v));
+       }
+
+       add_stripables (sl);
+}
+
+void
+Editor::add_routes (RouteList& rlist)
 {
-       ENSURE_GUI_THREAD (*this, &Editor::handle_new_route, routes)
+       StripableList sl;
 
-       RouteTimeAxisView *rtv;
-       list<RouteTimeAxisView*> new_views;
+       for (RouteList::iterator r = rlist.begin(); r != rlist.end(); ++r) {
+               sl.push_back (*r);
+       }
+
+       add_stripables (sl);
+}
+
+void
+Editor::add_stripables (StripableList& sl)
+{
+       list<TimeAxisView*> new_views;
+       boost::shared_ptr<VCA> v;
+       boost::shared_ptr<Route> r;
        TrackViewList new_selection;
        bool from_scratch = (track_views.size() == 0);
 
-       for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
-               boost::shared_ptr<Route> route = (*x);
+       sl.sort (StripablePresentationInfoSorter());
 
-               if (route->is_auditioner() || route->is_monitor()) {
-                       continue;
-               }
+       for (StripableList::iterator s = sl.begin(); s != sl.end(); ++s) {
 
-               DataType dt = route->input()->default_type();
+               if ((v = boost::dynamic_pointer_cast<VCA> (*s)) != 0) {
 
-               if (dt == ARDOUR::DataType::AUDIO) {
-                       rtv = new AudioTimeAxisView (*this, _session, *_track_canvas);
-                       rtv->set_route (route);
-               } else if (dt == ARDOUR::DataType::MIDI) {
-                       rtv = new MidiTimeAxisView (*this, _session, *_track_canvas);
-                       rtv->set_route (route);
-               } else {
-                       throw unknown_type();
-               }
+                       VCATimeAxisView* vtv = new VCATimeAxisView (*this, _session, *_track_canvas);
+                       vtv->set_vca (v);
+                       new_views.push_back (vtv);
 
-               new_views.push_back (rtv);
-               track_views.push_back (rtv);
-               new_selection.push_back (rtv);
+               } else if ((r = boost::dynamic_pointer_cast<Route> (*s)) != 0) {
 
-               rtv->effective_gain_display ();
+                       if (r->is_auditioner() || r->is_monitor()) {
+                               continue;
+                       }
 
-               rtv->view()->RegionViewAdded.connect (sigc::mem_fun (*this, &Editor::region_view_added));
-               rtv->view()->RegionViewRemoved.connect (sigc::mem_fun (*this, &Editor::region_view_removed));
+                       RouteTimeAxisView* rtv;
+                       DataType dt = r->input()->default_type();
+
+                       if (dt == ARDOUR::DataType::AUDIO) {
+                               rtv = new AudioTimeAxisView (*this, _session, *_track_canvas);
+                               rtv->set_route (r);
+                       } else if (dt == ARDOUR::DataType::MIDI) {
+                               rtv = new MidiTimeAxisView (*this, _session, *_track_canvas);
+                               rtv->set_route (r);
+                       } else {
+                               throw unknown_type();
+                       }
+
+                       new_views.push_back (rtv);
+                       track_views.push_back (rtv);
+                       new_selection.push_back (rtv);
+
+                       rtv->effective_gain_display ();
+
+                       rtv->view()->RegionViewAdded.connect (sigc::mem_fun (*this, &Editor::region_view_added));
+                       rtv->view()->RegionViewRemoved.connect (sigc::mem_fun (*this, &Editor::region_view_removed));
+               }
        }
 
        if (new_views.size() > 0) {
-               _routes->routes_added (new_views);
-               _summary->routes_added (new_views);
+               _routes->time_axis_views_added (new_views);
+               //_summary->routes_added (new_selection); /* XXX requires RouteTimeAxisViewList */
        }
 
-       if (!from_scratch) {
+       /* note: !new_selection.empty() means that we got some routes rather
+        * than just VCAs
+        */
+
+       if (!from_scratch && !new_selection.empty()) {
                selection->tracks.clear();
                selection->add (new_selection);
                begin_selection_op_history();
        }
 
-       if (show_editor_mixer_when_tracks_arrive) {
+       if (show_editor_mixer_when_tracks_arrive && !new_selection.empty()) {
                show_editor_mixer (true);
        }
 
@@ -5309,6 +5434,16 @@ Editor::timeaxisview_deleted (TimeAxisView *tv)
                        next_tv = (*i);
                }
 
+               // skip VCAs (cannot be selected, n/a in editor-mixer)
+               if (dynamic_cast<VCATimeAxisView*> (next_tv)) {
+                       /* VCAs are sorted last in line -- route_sorter.h, jump to top */
+                       next_tv = track_views.front();
+               }
+               if (dynamic_cast<VCATimeAxisView*> (next_tv)) {
+                       /* just in case: no master, only a VCA remains */
+                       next_tv = 0;
+               }
+
 
                if (next_tv) {
                        set_selected_mixer_strip (*next_tv);
@@ -5740,7 +5875,7 @@ Editor::set_script_action_name (int i, const std::string& n)
        assert (act);
        if (n.empty ()) {
                act->set_label (string_compose (_("Unset #%1"), i + 1));
-               act->set_tooltip (_("(no action bound"));
+               act->set_tooltip (_("no action bound"));
                act->set_sensitive (false);
        } else {
                act->set_label (n);
@@ -5754,9 +5889,9 @@ void
 Editor::show_editor_list (bool yn)
 {
        if (yn) {
-               _the_notebook.show ();
+               _editor_list_vbox.show ();
        } else {
-               _the_notebook.hide ();
+               _editor_list_vbox.hide ();
        }
 }
 
@@ -5803,18 +5938,6 @@ Editor::update_region_layering_order_editor ()
 void
 Editor::setup_fade_images ()
 {
-       _fade_in_images[FadeLinear] = new Gtk::Image (get_icon_path (X_("fadein-linear")));
-       _fade_in_images[FadeSymmetric] = new Gtk::Image (get_icon_path (X_("fadein-symmetric")));
-       _fade_in_images[FadeFast] = new Gtk::Image (get_icon_path (X_("fadein-fast-cut")));
-       _fade_in_images[FadeSlow] = new Gtk::Image (get_icon_path (X_("fadein-slow-cut")));
-       _fade_in_images[FadeConstantPower] = new Gtk::Image (get_icon_path (X_("fadein-constant-power")));
-
-       _fade_out_images[FadeLinear] = new Gtk::Image (get_icon_path (X_("fadeout-linear")));
-       _fade_out_images[FadeSymmetric] = new Gtk::Image (get_icon_path (X_("fadeout-symmetric")));
-       _fade_out_images[FadeFast] = new Gtk::Image (get_icon_path (X_("fadeout-fast-cut")));
-       _fade_out_images[FadeSlow] = new Gtk::Image (get_icon_path (X_("fadeout-slow-cut")));
-       _fade_out_images[FadeConstantPower] = new Gtk::Image (get_icon_path (X_("fadeout-constant-power")));
-
        _xfade_in_images[FadeLinear] = new Gtk::Image (get_icon_path (X_("fadein-linear")));
        _xfade_in_images[FadeSymmetric] = new Gtk::Image (get_icon_path (X_("fadein-symmetric")));
        _xfade_in_images[FadeFast] = new Gtk::Image (get_icon_path (X_("fadein-fast-cut")));
@@ -5864,16 +5987,16 @@ Editor::notebook_tab_clicked (GdkEventButton* ev, Gtk::Widget* page)
 
                if (_notebook_shrunk) {
                        if (pre_notebook_shrink_pane_width) {
-                               edit_pane.set_position (*pre_notebook_shrink_pane_width);
+                               edit_pane.set_divider (0, *pre_notebook_shrink_pane_width);
                        }
                        _notebook_shrunk = false;
                } else {
-                       pre_notebook_shrink_pane_width = edit_pane.get_position();
+                       pre_notebook_shrink_pane_width = edit_pane.get_divider();
 
                        /* this expands the LHS of the edit pane to cover the notebook
                           PAGE but leaves the tabs visible.
                         */
-                       edit_pane.set_position (edit_pane.get_position() + page->get_width());
+                       edit_pane.set_divider (0, edit_pane.get_divider() + page->get_width());
                        _notebook_shrunk = true;
                }
        }
@@ -5970,6 +6093,9 @@ Editor::ui_parameter_changed (string parameter)
                }
                _cursors->set_cursor_set (UIConfiguration::instance().get_icon_set());
                _cursor_stack.push_back(_cursors->grabber);
+               edit_pane.set_drag_cursor (*_cursors->expand_left_right);
+               editor_summary_pane.set_drag_cursor (*_cursors->expand_up_down);
+
        } else if (parameter == "draggable-playhead") {
                if (_verbose_cursor) {
                        playhead_cursor->set_sensitive (UIConfiguration::instance().get_draggable_playhead());