Clean up get_regions_for_action prototype slightly.
[ardour.git] / gtk2_ardour / editor.cc
index a9dbe9f7dd1629c15c1a58b523625cba3a86b734..613e9988466fd6560f048d99ddd07e9719fe9697 100644 (file)
 #include "editor_locations.h"
 #include "editor_snapshots.h"
 #include "editor_summary.h"
+#include "region_layering_order_editor.h"
 
 #include "i18n.h"
 
@@ -148,6 +149,7 @@ static const gchar *_snap_type_strings[] = {
        N_("Beats/32"),
        N_("Beats/28"),
        N_("Beats/24"),
+       N_("Beats/20"),
        N_("Beats/16"),
        N_("Beats/14"),
        N_("Beats/12"),
@@ -201,6 +203,7 @@ static const gchar *_rb_opt_strings[] = {
        N_("Unpitched percussion with stable notes"),
        N_("Crisp monophonic instrumental"),
        N_("Unpitched solo percussion"),
+       N_("Resample without preserving pitch"),
        0
 };
 #endif
@@ -217,7 +220,8 @@ Gdk::Cursor* Editor::fade_out_cursor = 0;
 Gdk::Cursor* Editor::grabber_cursor = 0;
 Gdk::Cursor* Editor::grabber_note_cursor = 0;
 Gdk::Cursor* Editor::grabber_edit_point_cursor = 0;
-Gdk::Cursor* Editor::zoom_cursor = 0;
+Gdk::Cursor* Editor::zoom_in_cursor = 0;
+Gdk::Cursor* Editor::zoom_out_cursor = 0;
 Gdk::Cursor* Editor::time_fx_cursor = 0;
 Gdk::Cursor* Editor::fader_cursor = 0;
 Gdk::Cursor* Editor::speaker_cursor = 0;
@@ -228,6 +232,7 @@ Gdk::Cursor* Editor::midi_erase_cursor = 0;
 Gdk::Cursor* Editor::wait_cursor = 0;
 Gdk::Cursor* Editor::timebar_cursor = 0;
 Gdk::Cursor* Editor::transparent_cursor = 0;
+Gdk::Cursor* Editor::up_down_cursor = 0;
 
 void
 show_me_the_size (Requisition* r, const char* what)
@@ -299,7 +304,9 @@ Editor::Editor ()
        , meters_running(false)
        , _pending_locate_request (false)
        , _pending_initial_locate (false)
+       , _last_cut_copy_source_track (0)
 
+       , _region_selection_change_updates_region_list (true)
 {
        constructed = false;
 
@@ -318,6 +325,7 @@ Editor::Editor ()
        clicked_crossfadeview = 0;
        clicked_control_point = 0;
        last_update_frame = 0;
+        pre_press_cursor = 0;
        _drags = new DragManager (this);
        current_mixer_strip = 0;
        current_bbt_points = 0;
@@ -329,6 +337,7 @@ Editor::Editor ()
        edit_point_strings = I18N (_edit_point_strings);
 #ifdef USE_RUBBERBAND
        rb_opt_strings = I18N (_rb_opt_strings);
+       rb_current_opt = 4;
 #endif
 
        snap_threshold = 5.0;
@@ -348,7 +357,6 @@ Editor::Editor ()
        show_gain_after_trim = false;
        verbose_cursor_on = true;
        last_item_entered = 0;
-       last_item_entered_n = 0;
 
        have_pending_keyboard_selection = false;
        _follow_playhead = true;
@@ -381,10 +389,8 @@ Editor::Editor ()
        _dragging_edit_point = false;
        select_new_marker = false;
        rhythm_ferret = 0;
+        layering_order_editor = 0;
        _bundle_manager = 0;
-       for (ARDOUR::DataType::iterator i = ARDOUR::DataType::begin(); i != ARDOUR::DataType::end(); ++i) {
-               _global_port_matrix[*i] = 0;
-       }
        no_save_visual = false;
        resize_idle_id = -1;
 
@@ -535,7 +541,6 @@ Editor::Editor ()
        edit_packer.set_border_width (0);
        edit_packer.set_name ("EditorWindow");
 
-       edit_packer.attach (zoom_vbox,               0, 1, 0, 2,    SHRINK,        FILL, 0, 0);
        /* labels for the rulers */
        edit_packer.attach (ruler_label_event_box,   1, 2, 0, 1,    FILL,        SHRINK, 0, 0);
        /* labels for the marker "tracks" */
@@ -666,9 +671,6 @@ Editor::Editor ()
        set_mouse_mode (MouseObject, true);
        set_edit_point_preference (EditAtMouse, true);
 
-       XMLNode* node = ARDOUR_UI::instance()->editor_settings();
-       set_state (*node, Stateful::loading_state_version);
-
        _playlist_selector = new PlaylistSelector();
        _playlist_selector->signal_delete_event().connect (sigc::bind (sigc::ptr_fun (just_hide_it), static_cast<Window *> (_playlist_selector)));
 
@@ -709,7 +711,7 @@ Editor::Editor ()
        WindowTitle title(Glib::get_application_name());
        title += _("Editor");
        set_title (title.get_string());
-       set_wmclass (X_("ardour_editor"), "Ardour");
+       set_wmclass (X_("ardour_editor"), PROGRAM_NAME);
 
        add (vpacker);
        add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
@@ -737,6 +739,8 @@ Editor::Editor ()
 
        constructed = true;
        instant_save ();
+
+       setup_fade_images ();
 }
 
 Editor::~Editor()
@@ -752,7 +756,7 @@ Editor::~Editor()
                image_socket_listener = 0 ;
        }
 #endif
-
+        
        delete _routes;
        delete _route_groups;
        delete track_canvas;
@@ -798,7 +802,7 @@ Editor::set_entered_regionview (RegionView* rv)
        }
 
        if ((entered_regionview = rv) != 0) {
-               entered_regionview->entered ();
+               entered_regionview->entered (internal_editing ());
        }
 }
 
@@ -838,8 +842,6 @@ Editor::show_window ()
                        tv = (static_cast<TimeAxisView*>(*i));
                        tv->reset_height ();
                }
-
-               reset_zoom (frames_per_unit);
        }
 
        present ();
@@ -870,10 +872,10 @@ Editor::zoom_adjustment_changed ()
 
        if (fpu < 1.0) {
                fpu = 1.0;
-               zoom_range_clock.set ((nframes64_t) floor (fpu * _canvas_width));
+               zoom_range_clock.set ((framepos_t) floor (fpu * _canvas_width));
        } else if (fpu > _session->current_end_frame() / _canvas_width) {
                fpu = _session->current_end_frame() / _canvas_width;
-               zoom_range_clock.set ((nframes64_t) floor (fpu * _canvas_width));
+               zoom_range_clock.set ((framepos_t) floor (fpu * _canvas_width));
        }
 
        temporal_zoom (fpu);
@@ -893,7 +895,7 @@ Editor::control_scroll (float fraction)
        /*
                _control_scroll_target is an optional<T>
 
-               it acts like a pointer to an nframes64_t, with
+               it acts like a pointer to an framepos_t, with
                a operator conversion to boolean to check
                that it has a value could possibly use
                playhead_cursor->current_frame to store the
@@ -906,12 +908,12 @@ Editor::control_scroll (float fraction)
                _dragging_playhead = true;
        }
 
-       if ((fraction < 0.0f) && (*_control_scroll_target < (nframes64_t) fabs(step))) {
+       if ((fraction < 0.0f) && (*_control_scroll_target < (framepos_t) fabs(step))) {
                *_control_scroll_target = 0;
-       } else if ((fraction > 0.0f) && (max_frames - *_control_scroll_target < step)) {
-               *_control_scroll_target = max_frames - (current_page_frames()*2); // allow room for slop in where the PH is on the screen
+       } else if ((fraction > 0.0f) && (max_framepos - *_control_scroll_target < step)) {
+               *_control_scroll_target = max_framepos - (current_page_frames()*2); // allow room for slop in where the PH is on the screen
        } else {
-               *_control_scroll_target += (nframes64_t) floor (step);
+               *_control_scroll_target += (framepos_t) floor (step);
        }
 
        /* move visuals, we'll catch up with it later */
@@ -942,7 +944,7 @@ Editor::control_scroll (float fraction)
 }
 
 bool
-Editor::deferred_control_scroll (nframes64_t /*target*/)
+Editor::deferred_control_scroll (framepos_t /*target*/)
 {
        _session->request_locate (*_control_scroll_target, _session->transport_rolling());
        // reset for next stream
@@ -976,7 +978,7 @@ Editor::on_realize ()
 }
 
 void
-Editor::map_position_change (nframes64_t frame)
+Editor::map_position_change (framepos_t frame)
 {
        ENSURE_GUI_THREAD (*this, &Editor::map_position_change, frame)
 
@@ -992,7 +994,7 @@ Editor::map_position_change (nframes64_t frame)
 }
 
 void
-Editor::center_screen (nframes64_t frame)
+Editor::center_screen (framepos_t frame)
 {
        double page = _canvas_width * frames_per_unit;
 
@@ -1005,12 +1007,12 @@ Editor::center_screen (nframes64_t frame)
 }
 
 void
-Editor::center_screen_internal (nframes64_t frame, float page)
+Editor::center_screen_internal (framepos_t frame, float page)
 {
        page /= 2;
 
        if (frame > page) {
-               frame -= (nframes64_t) page;
+               frame -= (framepos_t) page;
        } else {
                frame = 0;
        }
@@ -1097,6 +1099,7 @@ Editor::set_session (Session *t)
           but use Gtkmm2ext::UI::instance()->call_slot();
        */
 
+        _session->StepEditStatusChange.connect (_session_connections, invalidator (*this), ui_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), ui_bind (&Editor::map_position_change, this, _1), gui_context());
        _session->RouteAdded.connect (_session_connections, invalidator (*this), ui_bind (&Editor::handle_new_route, this, _1), gui_context());
@@ -1129,7 +1132,7 @@ Editor::set_session (Session *t)
 
        Location* loc = _session->locations()->auto_loop_location();
        if (loc == 0) {
-               loc = new Location (0, _session->current_end_frame(), _("Loop"),(Location::Flags) (Location::IsAutoLoop | Location::IsHidden));
+               loc = new Location (*_session, 0, _session->current_end_frame(), _("Loop"),(Location::Flags) (Location::IsAutoLoop | Location::IsHidden));
                if (loc->start() == loc->end()) {
                        loc->set_end (loc->start() + 1);
                }
@@ -1142,7 +1145,7 @@ Editor::set_session (Session *t)
 
        loc = _session->locations()->auto_punch_location();
        if (loc == 0) {
-               loc = new Location (0, _session->current_end_frame(), _("Punch"), (Location::Flags) (Location::IsAutoPunch | Location::IsHidden));
+               loc = new Location (*_session, 0, _session->current_end_frame(), _("Punch"), (Location::Flags) (Location::IsAutoPunch | Location::IsHidden));
                if (loc->start() == loc->end()) {
                        loc->set_end (loc->start() + 1);
                }
@@ -1194,16 +1197,16 @@ Editor::build_cursors ()
 {
        using namespace Gdk;
 
-       Gdk::Color mbg ("#000000" ); /* Black */
-       Gdk::Color mfg ("#0000ff" ); /* Blue. */
-
        {
-               RefPtr<Bitmap> source, mask;
-               source = Bitmap::create (mag_bits, mag_width, mag_height);
-               mask = Bitmap::create (magmask_bits, mag_width, mag_height);
-               zoom_cursor = new Gdk::Cursor (source, mask, mfg, mbg, mag_x_hot, mag_y_hot);
+               Glib::RefPtr<Gdk::Pixbuf> zoom_in_cursor_pixbuf (::get_icon ("zoom_in_cursor"));
+               zoom_in_cursor = new Gdk::Cursor (Gdk::Display::get_default(), zoom_in_cursor_pixbuf, 5, 5);
        }
 
+       {
+               Glib::RefPtr<Gdk::Pixbuf> zoom_out_cursor_pixbuf (::get_icon ("zoom_out_cursor"));
+               zoom_out_cursor = new Gdk::Cursor (Gdk::Display::get_default(), zoom_out_cursor_pixbuf, 5, 5);
+       }
+       
        Gdk::Color fbg ("#ffffff" );
        Gdk::Color ffg  ("#000000" );
 
@@ -1238,8 +1241,10 @@ Editor::build_cursors ()
                transparent_cursor = new Gdk::Cursor (bits, bits, c, c, 0, 0);
        }
 
-
-       grabber_cursor = new Gdk::Cursor (HAND2);
+       {
+               Glib::RefPtr<Gdk::Pixbuf> grabber_pixbuf (::get_icon ("grabber"));
+               grabber_cursor = new Gdk::Cursor (Gdk::Display::get_default(), grabber_pixbuf, 5, 0);
+       }
 
        {
                Glib::RefPtr<Gdk::Pixbuf> grabber_note_pixbuf (::get_icon ("grabber_note"));
@@ -1282,6 +1287,7 @@ Editor::build_cursors ()
        midi_select_cursor = new Gdk::Cursor (CENTER_PTR);
        midi_resize_cursor = new Gdk::Cursor (SIZING);
        midi_erase_cursor = new Gdk::Cursor (DRAPED_BOX);
+       up_down_cursor = new Gdk::Cursor (Gdk::SB_V_DOUBLE_ARROW);
 }
 
 /** Pop up a context menu for when the user clicks on a fade in or fade out */
@@ -1312,14 +1318,57 @@ Editor::popup_fade_context_menu (int button, int32_t time, ArdourCanvas::Item* i
                items.push_back (SeparatorElem());
 
                if (Profile->get_sae()) {
-                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Linear)));
-                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Fast)));
+                       
+                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeLinear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeFast)));
+                       
                } else {
-                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Linear)));
-                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Fast)));
-                       items.push_back (MenuElem (_("Slow"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::LogB)));
-                       items.push_back (MenuElem (_("Fast"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::LogA)));
-                       items.push_back (MenuElem (_("Fastest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Slow)));
+
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Linear"),
+                                       *_fade_in_images[FadeLinear],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeLinear)
+                                       )
+                               );
+
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Slowest"),
+                                       *_fade_in_images[FadeFast],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeFast)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Slow"),
+                                       *_fade_in_images[FadeLogB],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeLogB)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Fast"),
+                                       *_fade_in_images[FadeLogA],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeLogA)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Fastest"),
+                                       *_fade_in_images[FadeSlow],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeSlow)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
                }
 
                break;
@@ -1335,14 +1384,55 @@ Editor::popup_fade_context_menu (int button, int32_t time, ArdourCanvas::Item* i
                items.push_back (SeparatorElem());
 
                if (Profile->get_sae()) {
-                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Linear)));
-                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Slow)));
+                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeLinear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeSlow)));
                } else {
-                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Linear)));
-                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Slow)));
-                       items.push_back (MenuElem (_("Slow"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::LogA)));
-                       items.push_back (MenuElem (_("Fast"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::LogB)));
-                       items.push_back (MenuElem (_("Fastest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Fast)));
+
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Linear"),
+                                       *_fade_out_images[FadeLinear],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeLinear)
+                                       )
+                               );
+
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Slowest"),
+                                       *_fade_out_images[FadeFast],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeSlow)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Slow"),
+                                       *_fade_out_images[FadeLogB],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeLogA)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Fast"),
+                                       *_fade_out_images[FadeLogA],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeLogB)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Fastest"),
+                                       *_fade_out_images[FadeSlow],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeFast)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
                }
 
                break;
@@ -1358,10 +1448,10 @@ Editor::popup_fade_context_menu (int button, int32_t time, ArdourCanvas::Item* i
 }
 
 void
-Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type, bool with_selection, nframes64_t frame)
+Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type, bool with_selection, framepos_t frame)
 {
        using namespace Menu_Helpers;
-       Menu* (Editor::*build_menu_function)(nframes64_t);
+       Menu* (Editor::*build_menu_function)(framepos_t);
        Menu *menu;
 
        switch (item_type) {
@@ -1478,7 +1568,7 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
 }
 
 Menu*
-Editor::build_track_context_menu (nframes64_t)
+Editor::build_track_context_menu (framepos_t)
 {
        using namespace Menu_Helpers;
 
@@ -1490,7 +1580,7 @@ Editor::build_track_context_menu (nframes64_t)
 }
 
 Menu*
-Editor::build_track_bus_context_menu (nframes64_t)
+Editor::build_track_bus_context_menu (framepos_t)
 {
        using namespace Menu_Helpers;
 
@@ -1502,12 +1592,18 @@ Editor::build_track_bus_context_menu (nframes64_t)
 }
 
 Menu*
-Editor::build_track_region_context_menu (nframes64_t frame)
+Editor::build_track_region_context_menu (framepos_t frame)
 {
        using namespace Menu_Helpers;
        MenuList& edit_items  = track_region_context_menu.items();
        edit_items.clear();
 
+       /* we've just cleared the track region context menu, so the menu that these
+          two items were on will have disappeared; stop them dangling.
+       */
+       region_edit_menu_split_item = 0;
+       region_edit_menu_split_multichannel_item = 0;
+
        RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (clicked_axisview);
 
        if (rtv) {
@@ -1518,21 +1614,26 @@ Editor::build_track_region_context_menu (nframes64_t frame)
                   mode and so offering region context is somewhat confusing.
                */
                if ((tr = rtv->track()) && ((pl = tr->playlist())) && !internal_editing()) {
-                       Playlist::RegionList* regions = pl->regions_at ((nframes64_t) floor ( (double)frame * tr->speed()));
+                        framepos_t framepos = (framepos_t) floor ((double)frame * tr->speed());
+                        uint32_t regions_at = pl->count_regions_at (framepos);
+                        list<boost::shared_ptr<Region> > regions_for_menu;
 
                        if (selection->regions.size() > 1) {
                                // there's already a multiple selection: just add a
                                // single region context menu that will act on all
                                // selected regions
-                               boost::shared_ptr<Region> dummy_region; // = NULL
-                               add_region_context_items (rtv->view(), dummy_region, edit_items);
-                       } else {
-                               for (Playlist::RegionList::reverse_iterator i = regions->rbegin(); i != regions->rend(); ++i) {
-                                       add_region_context_items (rtv->view(), (*i), edit_items);
-                               }
-                       }
 
-                       delete regions;
+                               for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
+                                       regions_for_menu.push_back ((*i)->region ());
+                               }
+                        } else {
+                                boost::shared_ptr<Region> top_region = pl->top_region_at (framepos);
+                                if (top_region) {
+                                        regions_for_menu.push_back (top_region);
+                                }
+                        }
+
+                        add_region_context_items (rtv->view(), regions_for_menu, edit_items, framepos, regions_at > 1);
                }
        }
 
@@ -1542,7 +1643,7 @@ Editor::build_track_region_context_menu (nframes64_t frame)
 }
 
 Menu*
-Editor::build_track_crossfade_context_menu (nframes64_t frame)
+Editor::build_track_crossfade_context_menu (framepos_t frame)
 {
        using namespace Menu_Helpers;
        MenuList& edit_items  = track_crossfade_context_menu.items();
@@ -1557,7 +1658,6 @@ Editor::build_track_crossfade_context_menu (nframes64_t frame)
 
                if ((tr = atv->track()) && ((pl = tr->playlist()) != 0) && ((apl = boost::dynamic_pointer_cast<AudioPlaylist> (pl)) != 0)) {
 
-                       Playlist::RegionList* regions = pl->regions_at (frame);
                        AudioPlaylist::Crossfades xfades;
 
                        apl->crossfades_at (frame, xfades);
@@ -1568,18 +1668,26 @@ Editor::build_track_crossfade_context_menu (nframes64_t frame)
                                add_crossfade_context_items (atv->audio_view(), (*i), edit_items, many);
                        }
 
+                       framepos_t framepos = (framepos_t) floor ((double)frame * tr->speed());
+                       uint32_t regions_at = pl->count_regions_at (framepos);
+                        list<boost::shared_ptr<Region> > regions_for_menu;
+
                        if (selection->regions.size() > 1) {
-                               // there's already a multiple selection: just add a
-                               // single region context menu that will act on all
-                               // selected regions
-                               boost::shared_ptr<Region> dummy_region; // = NULL
-                               add_region_context_items (atv->audio_view(), dummy_region, edit_items);
-                       } else {
-                               for (Playlist::RegionList::reverse_iterator i = regions->rbegin(); i != regions->rend(); ++i) {
-                                       add_region_context_items (atv->audio_view(), (*i), edit_items);
+                               // there's already a multiple selection: just add a
+                               // single region context menu that will act on all
+                               // selected regions
+
+                               for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
+                                       regions_for_menu.push_back ((*i)->region ());
                                }
-                       }
-                       delete regions;
+                        } else {
+                                boost::shared_ptr<Region> top_region = pl->top_region_at (framepos);
+                                if (top_region) {
+                                        regions_for_menu.push_back (top_region);
+                                }
+                        }
+                        
+                        add_region_context_items (atv->audio_view(), regions_for_menu, edit_items, framepos, regions_at > 1);
                }
        }
 
@@ -1625,7 +1733,7 @@ Editor::analyze_range_selection()
 }
 
 Menu*
-Editor::build_track_selection_context_menu (nframes64_t)
+Editor::build_track_selection_context_menu (framepos_t)
 {
        using namespace Menu_Helpers;
        MenuList& edit_items  = track_selection_context_menu.items();
@@ -1699,7 +1807,8 @@ Editor::xfade_edit_right_region ()
 }
 
 void
-Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> region, Menu_Helpers::MenuList& edit_items)
+Editor::add_region_context_items (StreamView* sv, list<boost::shared_ptr<Region> > regions, Menu_Helpers::MenuList& edit_items,
+                                  framepos_t position, bool multiple_regions_at_position)
 {
        using namespace Menu_Helpers;
        Gtk::MenuItem* foo_item;
@@ -1707,24 +1816,106 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
        MenuList& items       = region_menu->items();
        region_menu->set_name ("ArdourContextMenu");
 
-       boost::shared_ptr<AudioRegion> ar;
-       boost::shared_ptr<MidiRegion>  mr;
+       /* Look through the regions that we are handling and make notes about what we have got */
+       
+       bool have_audio = false;
+       bool have_midi = false;
+       bool have_locked = false;
+       bool have_unlocked = false;
+       bool have_position_lock_style_audio = false;
+       bool have_position_lock_style_music = false;
+       bool have_muted = false;
+       bool have_unmuted = false;
+       bool have_opaque = false;
+       bool have_non_opaque = false;
+       bool have_not_at_natural_position = false;
+       bool have_envelope_visible = false;
+       bool have_envelope_invisible = false;
+       bool have_envelope_active = false;
+       bool have_envelope_inactive = false;
+       bool have_non_unity_scale_amplitude = false;
+
+       for (list<boost::shared_ptr<Region> >::const_iterator i = regions.begin(); i != regions.end(); ++i) {
+               boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (*i);
+               if (ar) {
+                       have_audio = true;
+               }
+               if (boost::dynamic_pointer_cast<MidiRegion> (*i)) {
+                       have_midi = true;
+               }
+
+               if ((*i)->locked()) {
+                       have_locked = true;
+               } else {
+                       have_unlocked = true;
+               }
+
+               if ((*i)->position_lock_style() == MusicTime) {
+                       have_position_lock_style_music = true;
+               } else {
+                       have_position_lock_style_audio = true;
+               }
+
+               if ((*i)->muted()) {
+                       have_muted = true;
+               } else {
+                       have_unmuted = true;
+               }
+
+               if ((*i)->opaque()) {
+                       have_opaque = true;
+               } else {
+                       have_non_opaque = true;
+               }
+
+               if (!(*i)->at_natural_position()) {
+                       have_not_at_natural_position = true;
+               }
+
+               if (ar) {
+                        /* its a bit unfortunate that "envelope visible" is a view-only
+                           property. we have to find the regionview to able to check
+                           its current setting.
+                        */
+
+                       RegionView* rv = sv->find_view (ar);
+                        have_envelope_invisible = true;
+
+                        if (rv) {
+                                AudioRegionView* arv = dynamic_cast<AudioRegionView*> (rv);
+                                if (arv && arv->envelope_visible()) {
+                                        have_envelope_visible = true;
+                                }
+                       }
+
+                       if (ar->envelope_active()) {
+                               have_envelope_active = true;
+                       } else {
+                               have_envelope_inactive = true;
+                       }
+
+                       if (ar->scale_amplitude() != 1) {
+                               have_non_unity_scale_amplitude = true;
+                       }
+               }
+       }
 
-       if (region) {
-               ar = boost::dynamic_pointer_cast<AudioRegion> (region);
-               mr = boost::dynamic_pointer_cast<MidiRegion> (region);
+       if (regions.size() == 1) {
 
                /* when this particular menu pops up, make the relevant region
                   become selected.
                */
 
                region_menu->signal_map_event().connect (
-                       sigc::bind (sigc::mem_fun(*this, &Editor::set_selected_regionview_from_map_event), sv, boost::weak_ptr<Region>(region)));
+                       sigc::bind (sigc::mem_fun(*this, &Editor::set_selected_regionview_from_map_event), sv, boost::weak_ptr<Region> (regions.front()))
+                       );
 
                items.push_back (MenuElem (_("Rename..."), sigc::mem_fun(*this, &Editor::rename_region)));
-               if (mr) {
+               
+               if (have_midi) {
                        items.push_back (MenuElem (_("List Editor..."), sigc::mem_fun(*this, &Editor::show_midi_list_editor)));
                }
+               
                items.push_back (MenuElem (_("Region Properties..."), sigc::mem_fun(*this, &Editor::edit_region)));
        }
 
@@ -1742,107 +1933,96 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
        items.push_back (MenuElem (_("Export..."), sigc::mem_fun(*this, &Editor::export_region)));
        items.push_back (MenuElem (_("Bounce"), sigc::mem_fun(*this, &Editor::bounce_region_selection)));
 
-       if (ar) {
+       if (have_audio) {
                items.push_back (MenuElem (_("Spectral Analysis..."), sigc::mem_fun(*this, &Editor::analyze_region_selection)));
        }
 
        items.push_back (SeparatorElem());
 
-       sigc::connection fooc;
-       boost::shared_ptr<Region> region_to_check;
-
-       if (region) {
-               region_to_check = region;
-       } else {
-               region_to_check = selection->regions.front()->region();
-       }
-
        items.push_back (CheckMenuElem (_("Lock")));
        CheckMenuItem* region_lock_item = static_cast<CheckMenuItem*>(&items.back());
-       if (region_to_check->locked()) {
+       if (have_locked && !have_unlocked) {
                region_lock_item->set_active();
+       } else if (have_locked && have_unlocked) {
+               region_lock_item->set_inconsistent ();
        }
        region_lock_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_region_lock));
 
        items.push_back (CheckMenuElem (_("Glue to Bars and Beats")));
        CheckMenuItem* bbt_glue_item = static_cast<CheckMenuItem*>(&items.back());
 
-       switch (region_to_check->position_lock_style()) {
-       case MusicTime:
-               bbt_glue_item->set_active (true);
-               break;
-       default:
-               bbt_glue_item->set_active (false);
-               break;
+       if (have_position_lock_style_music && !have_position_lock_style_audio) {
+               bbt_glue_item->set_active ();
+       } else if (have_position_lock_style_music && have_position_lock_style_audio) {
+               bbt_glue_item->set_inconsistent ();
        }
 
        bbt_glue_item->signal_activate().connect (sigc::mem_fun (*this, &Editor::toggle_region_lock_style));
 
        items.push_back (CheckMenuElem (_("Mute")));
        CheckMenuItem* region_mute_item = static_cast<CheckMenuItem*>(&items.back());
-       fooc = region_mute_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_region_mute));
-       if (region_to_check->muted()) {
-               fooc.block (true);
+
+       if (have_muted && !have_unmuted) {
                region_mute_item->set_active();
-               fooc.block (false);
+       } else if (have_muted && have_unmuted) {
+               region_mute_item->set_inconsistent ();
        }
         
+       region_mute_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_region_mute));
+       
         items.push_back (MenuElem (_("Transpose..."), mem_fun(*this, &Editor::pitch_shift_regions)));
 
        if (!Profile->get_sae()) {
                items.push_back (CheckMenuElem (_("Opaque")));
                CheckMenuItem* region_opaque_item = static_cast<CheckMenuItem*>(&items.back());
-               fooc = region_opaque_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_region_opaque));
-               if (region_to_check->opaque()) {
-                       fooc.block (true);
+               if (have_opaque && !have_non_opaque) {
                        region_opaque_item->set_active();
-                       fooc.block (false);
+               } else if (have_opaque && have_non_opaque) {
+                       region_opaque_item->set_inconsistent ();
                }
+               region_opaque_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_region_opaque));
        }
 
        items.push_back (CheckMenuElem (_("Original Position"), sigc::mem_fun(*this, &Editor::naturalize)));
-       if (region_to_check->at_natural_position()) {
+       if (!have_not_at_natural_position) {
                items.back().set_sensitive (false);
        }
 
        items.push_back (SeparatorElem());
 
-       if (ar) {
-
-               RegionView* rv = sv->find_view (ar);
-               AudioRegionView* arv = dynamic_cast<AudioRegionView*>(rv);
+       if (have_audio) {
 
                if (!Profile->get_sae()) {
                        items.push_back (MenuElem (_("Reset Envelope"), sigc::mem_fun(*this, &Editor::reset_region_gain_envelopes)));
 
                        items.push_back (CheckMenuElem (_("Envelope Visible")));
                        CheckMenuItem* region_envelope_visible_item = static_cast<CheckMenuItem*> (&items.back());
-                       fooc = region_envelope_visible_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_gain_envelope_visibility));
-                       if (arv->envelope_visible()) {
-                               fooc.block (true);
-                               region_envelope_visible_item->set_active (true);
-                               fooc.block (false);
+                       if (have_envelope_visible && !have_envelope_invisible) {
+                               region_envelope_visible_item->set_active ();
+                       } else if (have_envelope_visible && have_envelope_invisible) {
+                               region_envelope_visible_item->set_inconsistent ();
                        }
+                       region_envelope_visible_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_gain_envelope_visibility));
 
                        items.push_back (CheckMenuElem (_("Envelope Active")));
                        CheckMenuItem* region_envelope_active_item = static_cast<CheckMenuItem*> (&items.back());
-                       fooc = region_envelope_active_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_gain_envelope_active));
 
-                       if (ar->envelope_active()) {
-                               fooc.block (true);
-                               region_envelope_active_item->set_active (true);
-                               fooc.block (false);
+                       if (have_envelope_active && !have_envelope_inactive) {
+                               region_envelope_active_item->set_active ();
+                       } else if (have_envelope_active && have_envelope_inactive) {
+                               region_envelope_active_item->set_inconsistent ();
                        }
 
+                       region_envelope_active_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_gain_envelope_active));
                        items.push_back (SeparatorElem());
                }
 
                items.push_back (MenuElem (_("Normalize..."), sigc::mem_fun(*this, &Editor::normalize_region)));
-               if (ar->scale_amplitude() != 1) {
+               if (have_non_unity_scale_amplitude) {
                        items.push_back (MenuElem (_("Reset Gain"), sigc::mem_fun(*this, &Editor::reset_region_scale_amplitude)));
                }
 
-       } else if (mr) {
+       } else if (have_midi) {
                items.push_back (MenuElem (_("Quantize"), sigc::mem_fun(*this, &Editor::quantize_region)));
                items.push_back (MenuElem (_("Fork"), sigc::mem_fun(*this, &Editor::fork_region)));
                items.push_back (SeparatorElem());
@@ -1904,8 +2084,10 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
                region_edit_menu_split_item->set_sensitive (false);
        }
 
-       items.push_back (MenuElem (_("Make Mono Regions"), (sigc::mem_fun(*this, &Editor::split_multichannel_region))));
-       region_edit_menu_split_multichannel_item = &items.back();
+       if (have_audio) {
+               items.push_back (MenuElem (_("Make Mono Regions"), (sigc::mem_fun(*this, &Editor::split_multichannel_region))));
+               region_edit_menu_split_multichannel_item = &items.back();
+       }
 
        items.push_back (MenuElem (_("Duplicate"), (sigc::bind (sigc::mem_fun(*this, &Editor::duplicate_dialog), false))));
        items.push_back (MenuElem (_("Multi-Duplicate..."), (sigc::bind (sigc::mem_fun(*this, &Editor::duplicate_dialog), true))));
@@ -1922,7 +2104,7 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
        */
 
        string::size_type pos = 0;
-       string menu_item_name = (region) ? region->name() : _("Selected Regions");
+       string menu_item_name = (regions.size() == 1) ? regions.front()->name() : _("Selected Regions");
 
        while ((pos = menu_item_name.find ("_", pos)) != string::npos) {
                menu_item_name.replace (pos, 1, "__");
@@ -1930,6 +2112,9 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
        }
 
        edit_items.push_back (MenuElem (menu_item_name, *region_menu));
+       if (multiple_regions_at_position && (layering_order_editor == 0 || !layering_order_editor->is_visible ())) {
+               edit_items.push_back (MenuElem (_("Choose Top Region..."), (bind (mem_fun(*this, &Editor::change_region_layering_order), position))));
+       }
        edit_items.push_back (SeparatorElem());
 }
 
@@ -2154,6 +2339,7 @@ Editor::set_snap_to (SnapType st)
        case SnapToBeatDiv32:
        case SnapToBeatDiv28:
        case SnapToBeatDiv24:
+       case SnapToBeatDiv20:
        case SnapToBeatDiv16:
        case SnapToBeatDiv14:
        case SnapToBeatDiv12:
@@ -2233,7 +2419,7 @@ Editor::set_edit_point_preference (EditPoint ep, bool force)
                Glib::RefPtr<RadioAction>::cast_dynamic(act)->set_active (true);
        }
 
-       nframes64_t foo;
+       framepos_t foo;
        bool in_track_canvas;
 
        if (!mouse_frame (foo, in_track_canvas)) {
@@ -2313,7 +2499,7 @@ Editor::set_state (const XMLNode& node, int /*version*/)
        move (x, y);
 
        if (_session && (prop = node.property ("playhead"))) {
-               nframes64_t pos;
+               framepos_t pos;
                 sscanf (prop->value().c_str(), "%" PRIi64, &pos);
                playhead_cursor->set_position (pos);
        } else {
@@ -2330,6 +2516,8 @@ Editor::set_state (const XMLNode& node, int /*version*/)
 
        if ((prop = node.property ("zoom"))) {
                reset_zoom (PBD::atof (prop->value()));
+       } else {
+               reset_zoom (frames_per_unit);
        }
 
        if ((prop = node.property ("snap-to"))) {
@@ -2348,7 +2536,7 @@ Editor::set_state (const XMLNode& node, int /*version*/)
        }
 
        if ((prop = node.property ("left-frame")) != 0){
-               nframes64_t pos;
+               framepos_t pos;
                if (sscanf (prop->value().c_str(), "%" PRId64, &pos) == 1) {
                        reset_x_origin (pos);
                }
@@ -2378,7 +2566,7 @@ Editor::set_state (const XMLNode& node, int /*version*/)
 
        if ((prop = node.property ("show-measures"))) {
                bool yn = string_is_affirmative (prop->value());
-               _show_measures = !yn;
+               _show_measures = yn;
                RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("ToggleMeasureVisibility"));
                if (act) {
                        RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
@@ -2458,6 +2646,12 @@ Editor::set_state (const XMLNode& node, int /*version*/)
                the_notebook.set_current_page (atoi (prop->value ()));
        }
 
+       XMLNodeList children = node.children ();
+       for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {
+               selection->set_state (**i, Stateful::current_state_version);
+               _regions->set_state (**i);
+       }
+
        return 0;
 }
 
@@ -2544,6 +2738,9 @@ Editor::get_state ()
        snprintf (buf, sizeof (buf), "%d", the_notebook.get_current_page ());
        node->add_property (X_("editor-list-page"), buf);
 
+       node->add_child_nocopy (selection->get_state ());
+       node->add_child_nocopy (_regions->get_state ());
+       
        return *node;
 }
 
@@ -2574,7 +2771,7 @@ Editor::trackview_by_y_position (double y)
  *  @param event Event to get current key modifier information from, or 0.
  */
 void
-Editor::snap_to_with_modifier (nframes64_t& start, GdkEvent const * event, int32_t direction, bool for_mark)
+Editor::snap_to_with_modifier (framepos_t& start, GdkEvent const * event, int32_t direction, bool for_mark)
 {
        if (!_session || !event) {
                return;
@@ -2592,7 +2789,7 @@ Editor::snap_to_with_modifier (nframes64_t& start, GdkEvent const * event, int32
 }
 
 void
-Editor::snap_to (nframes64_t& start, int32_t direction, bool for_mark)
+Editor::snap_to (framepos_t& start, int32_t direction, bool for_mark)
 {
        if (!_session || _snap_mode == SnapOff) {
                return;
@@ -2602,17 +2799,17 @@ Editor::snap_to (nframes64_t& start, int32_t direction, bool for_mark)
 }
 
 void
-Editor::timecode_snap_to_internal (nframes64_t& start, int32_t direction, bool /*for_mark*/)
+Editor::timecode_snap_to_internal (framepos_t& start, int32_t direction, bool /*for_mark*/)
 {
-       const nframes64_t one_timecode_second = (nframes64_t)(rint(_session->timecode_frames_per_second()) * _session->frames_per_timecode_frame());
-       nframes64_t one_timecode_minute = (nframes64_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->frames_per_timecode_frame());
+       framepos_t one_timecode_minute = (framepos_t)(rint(_session->timecode_frames_per_second()) * _session->frames_per_timecode_frame() * 60);
 
        switch (_snap_type) {
        case SnapToTimecodeFrame:
                if (((direction == 0) && (fmod((double)start, (double)_session->frames_per_timecode_frame()) > (_session->frames_per_timecode_frame() / 2))) || (direction > 0)) {
-                       start = (nframes64_t) (ceil ((double) start / _session->frames_per_timecode_frame()) * _session->frames_per_timecode_frame());
+                       start = (framepos_t) (ceil ((double) start / _session->frames_per_timecode_frame()) * _session->frames_per_timecode_frame());
                } else {
-                       start = (nframes64_t) (floor ((double) start / _session->frames_per_timecode_frame()) *  _session->frames_per_timecode_frame());
+                       start = (framepos_t) (floor ((double) start / _session->frames_per_timecode_frame()) *  _session->frames_per_timecode_frame());
                }
                break;
 
@@ -2624,9 +2821,9 @@ Editor::timecode_snap_to_internal (nframes64_t& start, int32_t direction, bool /
                        start -= _session->timecode_offset ();
                }
                if (((direction == 0) && (start % one_timecode_second > one_timecode_second / 2)) || direction > 0) {
-                       start = (nframes64_t) ceil ((double) start / one_timecode_second) * one_timecode_second;
+                       start = (framepos_t) ceil ((double) start / one_timecode_second) * one_timecode_second;
                } else {
-                       start = (nframes64_t) floor ((double) start / one_timecode_second) * one_timecode_second;
+                       start = (framepos_t) floor ((double) start / one_timecode_second) * one_timecode_second;
                }
 
                if (_session->timecode_offset_negative())
@@ -2645,9 +2842,9 @@ Editor::timecode_snap_to_internal (nframes64_t& start, int32_t direction, bool /
                        start -= _session->timecode_offset ();
                }
                if (((direction == 0) && (start % one_timecode_minute > one_timecode_minute / 2)) || direction > 0) {
-                       start = (nframes64_t) ceil ((double) start / one_timecode_minute) * one_timecode_minute;
+                       start = (framepos_t) ceil ((double) start / one_timecode_minute) * one_timecode_minute;
                } else {
-                       start = (nframes64_t) floor ((double) start / one_timecode_minute) * one_timecode_minute;
+                       start = (framepos_t) floor ((double) start / one_timecode_minute) * one_timecode_minute;
                }
                if (_session->timecode_offset_negative())
                {
@@ -2663,13 +2860,13 @@ Editor::timecode_snap_to_internal (nframes64_t& start, int32_t direction, bool /
 }
 
 void
-Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
+Editor::snap_to_internal (framepos_t& start, int32_t direction, bool for_mark)
 {
-       const nframes64_t one_second = _session->frame_rate();
-       const nframes64_t one_minute = _session->frame_rate() * 60;
-       nframes64_t presnap = start;
-       nframes64_t before;
-       nframes64_t after;
+       const framepos_t one_second = _session->frame_rate();
+       const framepos_t one_minute = _session->frame_rate() * 60;
+       framepos_t presnap = start;
+       framepos_t before;
+       framepos_t after;
 
        switch (_snap_type) {
        case SnapToTimecodeFrame:
@@ -2679,25 +2876,25 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
 
        case SnapToCDFrame:
                if (((direction == 0) && (start % (one_second/75) > (one_second/75) / 2)) || (direction > 0)) {
-                       start = (nframes64_t) ceil ((double) start / (one_second / 75)) * (one_second / 75);
+                       start = (framepos_t) ceil ((double) start / (one_second / 75)) * (one_second / 75);
                } else {
-                       start = (nframes64_t) floor ((double) start / (one_second / 75)) * (one_second / 75);
+                       start = (framepos_t) floor ((double) start / (one_second / 75)) * (one_second / 75);
                }
                break;
 
        case SnapToSeconds:
                if (((direction == 0) && (start % one_second > one_second / 2)) || (direction > 0)) {
-                       start = (nframes64_t) ceil ((double) start / one_second) * one_second;
+                       start = (framepos_t) ceil ((double) start / one_second) * one_second;
                } else {
-                       start = (nframes64_t) floor ((double) start / one_second) * one_second;
+                       start = (framepos_t) floor ((double) start / one_second) * one_second;
                }
                break;
 
        case SnapToMinutes:
                if (((direction == 0) && (start % one_minute > one_minute / 2)) || (direction > 0)) {
-                       start = (nframes64_t) ceil ((double) start / one_minute) * one_minute;
+                       start = (framepos_t) ceil ((double) start / one_minute) * one_minute;
                } else {
-                       start = (nframes64_t) floor ((double) start / one_minute) * one_minute;
+                       start = (framepos_t) floor ((double) start / one_minute) * one_minute;
                }
                break;
 
@@ -2718,6 +2915,9 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
        case SnapToBeatDiv24:
                start = _session->tempo_map().round_to_beat_subdivision (start, 24, direction);
                break;
+       case SnapToBeatDiv20:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 20, direction);
+               break;
        case SnapToBeatDiv16:
                start = _session->tempo_map().round_to_beat_subdivision (start, 16, direction);
                break;
@@ -2759,11 +2959,11 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
 
                _session->locations()->marks_either_side (start, before, after);
 
-               if (before == max_frames) {
+               if (before == max_framepos) {
                        start = after;
-               } else if (after == max_frames) {
+               } else if (after == max_framepos) {
                        start = before;
-               } else if (before != max_frames && after != max_frames) {
+               } else if (before != max_framepos && after != max_framepos) {
                        /* have before and after */
                        if ((start - before) < (after - start)) {
                                start = before;
@@ -2780,8 +2980,8 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
        case SnapToRegionBoundary:
                if (!region_boundary_cache.empty()) {
 
-                       vector<nframes64_t>::iterator prev = region_boundary_cache.end ();
-                       vector<nframes64_t>::iterator next = region_boundary_cache.end ();
+                       vector<framepos_t>::iterator prev = region_boundary_cache.end ();
+                       vector<framepos_t>::iterator next = region_boundary_cache.end ();
 
                        if (direction > 0) {
                                next = std::upper_bound (region_boundary_cache.begin(), region_boundary_cache.end(), start);
@@ -2794,8 +2994,8 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
                                prev--;
                        }
 
-                       nframes64_t const p = (prev == region_boundary_cache.end()) ? region_boundary_cache.front () : *prev;
-                       nframes64_t const n = (next == region_boundary_cache.end()) ? region_boundary_cache.back () : *next;
+                       framepos_t const p = (prev == region_boundary_cache.end()) ? region_boundary_cache.front () : *prev;
+                       framepos_t const n = (next == region_boundary_cache.end()) ? region_boundary_cache.back () : *next;
 
                        if (start > (p + n) / 2) {
                                start = n;
@@ -2932,8 +3132,8 @@ Editor::setup_toolbar ()
 
        /* Zoom */
 
-       zoom_box.set_spacing (1);
-       zoom_box.set_border_width (0);
+       _zoom_box.set_spacing (1);
+       _zoom_box.set_border_width (0);
 
        zoom_in_button.set_name ("EditorTimeButton");
        zoom_in_button.set_image (*(manage (new Image (Stock::ZOOM_IN, Gtk::ICON_SIZE_MENU))));
@@ -2951,10 +3151,12 @@ Editor::setup_toolbar ()
        set_popdown_strings (zoom_focus_selector, zoom_focus_strings, true);
        zoom_focus_selector.signal_changed().connect (sigc::mem_fun(*this, &Editor::zoom_focus_selection_done));
 
-       zoom_box.pack_start (zoom_out_button, false, false);
-       zoom_box.pack_start (zoom_in_button, false, false);
-       zoom_box.pack_start (zoom_out_full_button, false, false);
+       _zoom_box.pack_start (zoom_out_button, false, false);
+       _zoom_box.pack_start (zoom_in_button, false, false);
+       _zoom_box.pack_start (zoom_out_full_button, false, false);
 
+       _zoom_box.pack_start (zoom_focus_selector);
+       
        /* Track zoom buttons */
        tav_expand_button.set_name ("TrackHeightButton");
        tav_expand_button.set_size_request(-1,20);
@@ -2966,18 +3168,20 @@ Editor::setup_toolbar ()
        tav_shrink_button.add (*(manage (new Image (::get_icon("tav_shrink")))));
        tav_shrink_button.signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &Editor::tav_zoom_step), false));
 
-       track_zoom_box.set_spacing (1);
-       track_zoom_box.set_border_width (0);
-
-       track_zoom_box.pack_start (tav_shrink_button, false, false);
-       track_zoom_box.pack_start (tav_expand_button, false, false);
-
-       HBox* zbc = manage (new HBox);
-       zbc->pack_start (zoom_focus_selector, PACK_SHRINK);
-       zoom_vbox.pack_start (*zbc, PACK_SHRINK);
-       zoom_vbox.pack_start (zoom_box, PACK_SHRINK);
-       zoom_vbox.pack_start (track_zoom_box, PACK_SHRINK);
-
+       _zoom_box.pack_start (tav_shrink_button);
+       _zoom_box.pack_start (tav_expand_button);
+       
+       _zoom_tearoff = manage (new TearOff (_zoom_box));
+
+       _zoom_tearoff->Detach.connect (sigc::bind (sigc::mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
+                                                  &_zoom_tearoff->tearoff_window()));
+       _zoom_tearoff->Attach.connect (sigc::bind (sigc::mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
+                                                  &_zoom_tearoff->tearoff_window(), 0));
+       _zoom_tearoff->Hidden.connect (sigc::bind (sigc::mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
+                                                  &_zoom_tearoff->tearoff_window()));
+       _zoom_tearoff->Visible.connect (sigc::bind (sigc::mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
+                                                   &_zoom_tearoff->tearoff_window(), 0));
+       
        snap_box.set_spacing (1);
        snap_box.set_border_width (2);
 
@@ -3037,6 +3241,7 @@ Editor::setup_toolbar ()
        toolbar_hbox.set_border_width (1);
 
        toolbar_hbox.pack_start (*_mouse_mode_tearoff, false, false);
+       toolbar_hbox.pack_start (*_zoom_tearoff, false, false);
        toolbar_hbox.pack_start (*_tools_tearoff, false, false);
 
        hbox->pack_start (snap_box, false, false);
@@ -3057,13 +3262,13 @@ void
 Editor::setup_tooltips ()
 {
        ARDOUR_UI::instance()->set_tip (mouse_move_button, _("Select/Move Objects"));
-       ARDOUR_UI::instance()->set_tip (mouse_gain_button, _("Draw Gain Automation"));
+       ARDOUR_UI::instance()->set_tip (mouse_gain_button, _("Draw Region Gain"));
        ARDOUR_UI::instance()->set_tip (mouse_zoom_button, _("Select Zoom Range"));
-       ARDOUR_UI::instance()->set_tip (mouse_timefx_button, _("Stretch/Shrink Regions"));
+       ARDOUR_UI::instance()->set_tip (mouse_timefx_button, _("Stretch/Shrink Regions and MIDI Notes"));
        ARDOUR_UI::instance()->set_tip (mouse_audition_button, _("Listen to Specific Regions"));
        ARDOUR_UI::instance()->set_tip (join_object_range_button, _("Select/Move Objects or Ranges"));
        ARDOUR_UI::instance()->set_tip (internal_edit_button, _("Edit Region Contents (e.g. notes)"));
-       ARDOUR_UI::instance()->set_tip (*_group_tabs, _("Groups: context-click for possible operations"));
+       ARDOUR_UI::instance()->set_tip (*_group_tabs, _("Groups: click to (de)activate\nContext-click for other operations"));
        ARDOUR_UI::instance()->set_tip (nudge_forward_button, _("Nudge Region/Selection Forwards"));
        ARDOUR_UI::instance()->set_tip (nudge_backward_button, _("Nudge Region/Selection Backwards"));
        ARDOUR_UI::instance()->set_tip (zoom_in_button, _("Zoom In"));
@@ -3077,6 +3282,7 @@ Editor::setup_tooltips ()
        ARDOUR_UI::instance()->set_tip (edit_point_selector, _("Edit point"));
        ARDOUR_UI::instance()->set_tip (midi_sound_notes, _("Sound Notes"));
        ARDOUR_UI::instance()->set_tip (midi_panic_button, _("Send note off and reset controller messages on all MIDI channels"));
+       ARDOUR_UI::instance()->set_tip (edit_mode_selector, _("Edit Mode"));
 }
 
 void
@@ -3111,7 +3317,7 @@ Editor::setup_midi_toolbar ()
 
 int
 Editor::convert_drop_to_paths (
-               vector<ustring>&                paths,
+               vector<string>&                paths,
                const RefPtr<Gdk::DragContext>& /*context*/,
                gint                            /*x*/,
                gint                            /*y*/,
@@ -3122,8 +3328,8 @@ Editor::convert_drop_to_paths (
        if (_session == 0) {
                return -1;
        }
-
-       vector<ustring> uris = data.get_uris();
+        
+       vector<string> uris = data.get_uris();
 
        if (uris.empty()) {
 
@@ -3141,7 +3347,7 @@ Editor::convert_drop_to_paths (
                   THERE MAY BE NO NULL TERMINATING CHAR!!!
                */
 
-               ustring txt = data.get_text();
+               string txt = data.get_text();
                const char* p;
                const char* q;
 
@@ -3169,7 +3375,7 @@ Editor::convert_drop_to_paths (
 
                                        if (q > p)
                                        {
-                                               uris.push_back (ustring (p, q - p + 1));
+                                               uris.push_back (string (p, q - p + 1));
                                        }
                                }
                        }
@@ -3185,18 +3391,18 @@ Editor::convert_drop_to_paths (
                }
        }
 
-       for (vector<ustring>::iterator i = uris.begin(); i != uris.end(); ++i) {
+       for (vector<string>::iterator i = uris.begin(); i != uris.end(); ++i) {
 
                if ((*i).substr (0,7) == "file://") {
 
-                       ustring p = *i;
+                       string p = *i;
                        PBD::url_decode (p);
 
                        // scan forward past three slashes
 
-                       ustring::size_type slashcnt = 0;
-                       ustring::size_type n = 0;
-                       ustring::iterator x = p.begin();
+                       string::size_type slashcnt = 0;
+                       string::size_type n = 0;
+                       string::iterator x = p.begin();
 
                        while (slashcnt < 3 && x != p.end()) {
                                if ((*x) == '/') {
@@ -3325,8 +3531,7 @@ Editor::duplicate_dialog (bool with_dialog)
                }
        }
 
-       RegionSelection rs;
-       get_regions_for_action (rs);
+       RegionSelection rs = get_regions_for_action ();
 
        if (mouse_mode != MouseRange) {
 
@@ -3423,7 +3628,7 @@ Editor::clamp_verbose_cursor_y (double y)
 }
 
 void
-Editor::show_verbose_canvas_cursor_with (const string & txt)
+Editor::show_verbose_canvas_cursor_with (const string & txt, int32_t xoffset, int32_t yoffset)
 {
        verbose_canvas_cursor->property_text() = txt.c_str();
 
@@ -3433,6 +3638,9 @@ Editor::show_verbose_canvas_cursor_with (const string & txt)
        track_canvas->get_pointer (x, y);
        track_canvas->window_to_world (x, y, wx, wy);
 
+        wx += xoffset;
+        wy += yoffset;
+
        /* don't get too close to the edge */
        verbose_canvas_cursor->property_x() = clamp_verbose_cursor_x (wx);
        verbose_canvas_cursor->property_y() = clamp_verbose_cursor_y (wy);
@@ -3484,22 +3692,7 @@ Editor::cycle_edit_mode ()
 void
 Editor::edit_mode_selection_done ()
 {
-       if (_session == 0) {
-               return;
-       }
-
-       string choice = edit_mode_selector.get_active_text();
-       EditMode mode = Slide;
-
-       if (choice == _("Splice Edit")) {
-               mode = Splice;
-       } else if (choice == _("Slide Edit")) {
-               mode = Slide;
-       } else if (choice == _("Lock Edit")) {
-               mode = Lock;
-       }
-
-       Config->set_edit_mode (mode);
+       Config->set_edit_mode (string_to_edit_mode (edit_mode_selector.get_active_text ()));
 }
 
 void
@@ -3530,6 +3723,8 @@ Editor::snap_type_selection_done ()
                snaptype = SnapToBeatDiv14;
        } else if (choice == _("Beats/16")) {
                snaptype = SnapToBeatDiv16;
+       } else if (choice == _("Beats/20")) {
+               snaptype = SnapToBeatDiv20;
        } else if (choice == _("Beats/24")) {
                snaptype = SnapToBeatDiv24;
        } else if (choice == _("Beats/28")) {
@@ -3913,7 +4108,7 @@ Editor::playlist_selector () const
 }
 
 Evoral::MusicalTime
-Editor::get_grid_type_as_beats (bool& success, nframes64_t position)
+Editor::get_grid_type_as_beats (bool& success, framepos_t position)
 {
        success = true;
 
@@ -3931,6 +4126,9 @@ Editor::get_grid_type_as_beats (bool& success, nframes64_t position)
        case SnapToBeatDiv24:
                return 1.0/24.0;
                break;
+       case SnapToBeatDiv20:
+               return 1.0/20.0;
+               break;
        case SnapToBeatDiv16:
                return 1.0/16.0;
                break;
@@ -3989,10 +4187,10 @@ Editor::get_grid_type_as_beats (bool& success, nframes64_t position)
        return 0.0;
 }
 
-nframes64_t
-Editor::get_nudge_distance (nframes64_t pos, nframes64_t& next)
+framecnt_t
+Editor::get_nudge_distance (framepos_t pos, framecnt_t& next)
 {
-       nframes64_t ret;
+       framecnt_t ret;
 
        ret = nudge_clock.current_duration (pos);
        next = ret + 1; /* XXXX fix me */
@@ -4037,7 +4235,7 @@ Editor::playlist_deletion_dialog (boost::shared_ptr<Playlist> pl)
 }
 
 bool
-Editor::audio_region_selection_covers (nframes64_t where)
+Editor::audio_region_selection_covers (framepos_t where)
 {
        for (RegionSelection::iterator a = selection->regions.begin(); a != selection->regions.end(); ++a) {
                if ((*a)->region()->covers (where)) {
@@ -4112,10 +4310,8 @@ Editor::control_layout_scroll (GdkEventScroll* ev)
 }
 
 void
-Editor::session_state_saved (string snap_name)
+Editor::session_state_saved (string)
 {
-       ENSURE_GUI_THREAD (*this, &Editor::session_state_saved, snap_name);
-       
        update_title ();        
        _snapshots->redisplay ();
 }
@@ -4125,6 +4321,7 @@ Editor::maximise_editing_space ()
 {
        _mouse_mode_tearoff->set_visible (false);
        _tools_tearoff->set_visible (false);
+       _zoom_tearoff->set_visible (false);
 
        pre_maximal_horizontal_pane_position = edit_pane.get_position ();
        pre_maximal_vertical_pane_position = editor_summary_pane.get_position ();
@@ -4154,6 +4351,12 @@ Editor::maximise_editing_space ()
        } else {
                editor_summary_pane.set_position (post_maximal_vertical_pane_position);
        }
+
+       if (Config->get_keep_tearoffs()) {
+               _mouse_mode_tearoff->set_visible (true);
+               _tools_tearoff->set_visible (true);
+               _zoom_tearoff->set_visible (true);
+       }
 }
 
 void
@@ -4173,6 +4376,7 @@ Editor::restore_editing_space ()
 
        _mouse_mode_tearoff->set_visible (true);
        _tools_tearoff->set_visible (true);
+       _zoom_tearoff->set_visible (true);
        post_maximal_editor_width = this->get_width();
        post_maximal_editor_height = this->get_height();
 
@@ -4262,7 +4466,7 @@ Editor::on_key_release_event (GdkEventKey* ev)
  *  @param frame New x origin.
  */
 void
-Editor::reset_x_origin (nframes64_t frame)
+Editor::reset_x_origin (framepos_t frame)
 {
        queue_visual_change (frame);
 }
@@ -4280,7 +4484,7 @@ Editor::reset_zoom (double fpu)
 }
 
 void
-Editor::reposition_and_zoom (nframes64_t frame, double fpu)
+Editor::reposition_and_zoom (framepos_t frame, double fpu)
 {
        reset_x_origin (frame);
        reset_zoom (fpu);
@@ -4398,7 +4602,7 @@ Editor::set_frames_per_unit (double fpu)
           of frames into an 800 pixel wide space.
        */
 
-       if (max_frames / fpu < 800.0) {
+       if (max_framepos / fpu < 800.0) {
                return;
        }
 
@@ -4414,7 +4618,7 @@ Editor::post_zoom ()
 {
        // convert fpu to frame count
 
-       nframes64_t frames = (nframes64_t) floor (frames_per_unit * _canvas_width);
+       framepos_t frames = (framepos_t) floor (frames_per_unit * _canvas_width);
 
        if (frames_per_unit != zoom_range_clock.current_duration()) {
                zoom_range_clock.set (frames);
@@ -4441,7 +4645,7 @@ Editor::post_zoom ()
 }
 
 void
-Editor::queue_visual_change (nframes64_t where)
+Editor::queue_visual_change (framepos_t where)
 {
        pending_visual_change.add (VisualChange::TimeOrigin);
        pending_visual_change.time_origin = where;
@@ -4486,7 +4690,19 @@ Editor::idle_visual_changer ()
        VisualChange::Type p = pending_visual_change.pending;
        pending_visual_change.pending = (VisualChange::Type) 0;
 
-       double last_time_origin = horizontal_position ();
+       double const last_time_origin = horizontal_position ();
+
+       if (p & VisualChange::TimeOrigin) {
+               /* This is a bit of a hack, but set_frames_per_unit
+                  below will (if called) end up with the
+                  CrossfadeViews looking at Editor::leftmost_frame,
+                  and if we're changing origin and zoom in the same
+                  operation it will be the wrong value unless we
+                  update it here.
+               */
+
+               leftmost_frame = pending_visual_change.time_origin;
+       }
 
        if (p & VisualChange::ZoomLevel) {
                set_frames_per_unit (pending_visual_change.frames_per_unit);
@@ -4533,11 +4749,11 @@ Editor::sort_track_selection (TrackViewList* sel)
        }
 }
 
-nframes64_t
+framepos_t
 Editor::get_preferred_edit_position (bool ignore_playhead)
 {
        bool ignored;
-       nframes64_t where = 0;
+       framepos_t where = 0;
        EditPoint ep = _edit_point;
 
        if (entered_marker) {
@@ -4582,7 +4798,7 @@ Editor::get_preferred_edit_position (bool ignore_playhead)
 }
 
 void
-Editor::set_loop_range (nframes64_t start, nframes64_t end, string cmd)
+Editor::set_loop_range (framepos_t start, framepos_t end, string cmd)
 {
        if (!_session) return;
 
@@ -4591,7 +4807,7 @@ Editor::set_loop_range (nframes64_t start, nframes64_t end, string cmd)
        Location* tll;
 
        if ((tll = transport_loop_location()) == 0) {
-               Location* loc = new Location (start, end, _("Loop"),  Location::IsAutoLoop);
+               Location* loc = new Location (*_session, start, end, _("Loop"),  Location::IsAutoLoop);
                XMLNode &before = _session->locations()->get_state();
                _session->locations()->add (loc, true);
                _session->set_auto_loop_location (loc);
@@ -4609,7 +4825,7 @@ Editor::set_loop_range (nframes64_t start, nframes64_t end, string cmd)
 }
 
 void
-Editor::set_punch_range (nframes64_t start, nframes64_t end, string cmd)
+Editor::set_punch_range (framepos_t start, framepos_t end, string cmd)
 {
        if (!_session) return;
 
@@ -4618,7 +4834,7 @@ Editor::set_punch_range (nframes64_t start, nframes64_t end, string cmd)
        Location* tpl;
 
        if ((tpl = transport_punch_location()) == 0) {
-               Location* loc = new Location (start, end, _("Loop"),  Location::IsAutoPunch);
+               Location* loc = new Location (*_session, start, end, _("Loop"),  Location::IsAutoPunch);
                XMLNode &before = _session->locations()->get_state();
                _session->locations()->add (loc, true);
                _session->set_auto_loop_location (loc);
@@ -4642,7 +4858,7 @@ Editor::set_punch_range (nframes64_t start, nframes64_t end, string cmd)
  *  @param ts Tracks to look on; if this is empty, all tracks are examined.
  */
 void
-Editor::get_regions_at (RegionSelection& rs, nframes64_t where, const TrackViewList& ts) const
+Editor::get_regions_at (RegionSelection& rs, framepos_t where, const TrackViewList& ts) const
 {
        const TrackViewList* tracks;
 
@@ -4661,7 +4877,7 @@ Editor::get_regions_at (RegionSelection& rs, nframes64_t where, const TrackViewL
                        if ((tr = rtv->track()) && ((pl = tr->playlist()))) {
 
                                Playlist::RegionList* regions = pl->regions_at (
-                                               (nframes64_t) floor ( (double)where * tr->speed()));
+                                               (framepos_t) floor ( (double)where * tr->speed()));
 
                                for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
                                        RegionView* rv = rtv->view()->find_view (*i);
@@ -4677,7 +4893,7 @@ Editor::get_regions_at (RegionSelection& rs, nframes64_t where, const TrackViewL
 }
 
 void
-Editor::get_regions_after (RegionSelection& rs, nframes64_t where, const TrackViewList& ts) const
+Editor::get_regions_after (RegionSelection& rs, framepos_t where, const TrackViewList& ts) const
 {
        const TrackViewList* tracks;
 
@@ -4696,7 +4912,7 @@ Editor::get_regions_after (RegionSelection& rs, nframes64_t where, const TrackVi
                        if ((tr = rtv->track()) && ((pl = tr->playlist()))) {
 
                                Playlist::RegionList* regions = pl->regions_touched (
-                                               (nframes64_t) floor ( (double)where * tr->speed()), max_frames);
+                                        (framepos_t) floor ( (double)where * tr->speed()), max_framepos);
 
                                for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
 
@@ -4713,47 +4929,67 @@ Editor::get_regions_after (RegionSelection& rs, nframes64_t where, const TrackVi
        }
 }
 
-/** Find all regions which are either:
- *      - selected or
- *      - the entered_regionview (if allow_entered == true) or
- *      - under the preferred edit position AND on a selected track, or on a track
- *        which is in the same active edit-enable route group as a selected region (if allow_edit_position == true)
+/** Get regions using the following conditions:
+ *  If check_edit_position == false, then return the selected regions.
+ *  Otherwise:
+ *    1.  If the edit point is `mouse':
+ *          if the mouse is over a selected region, or no region, return all selected regions.
+ *          if the mouse is over an unselected region, return just that region.
+ *    2.  For all other edit points:
+ *          return the selected regions AND those that are both under the edit position
+ *          AND on a selected track, or on a track which is in the same active edit-enabled route group
+ *          as a selected region.
+ *
+ *  The rationale here is that the mouse edit point is special in that its position describes
+ *  both a time and a track; the other edit modes only describe a time.
+ *
  *  @param rs Returned region list.
- *  @param allow_entered true to include the entered_regionview in the list.
  */
-void
-Editor::get_regions_for_action (RegionSelection& rs, bool allow_entered, bool allow_edit_position)
-{
-       /* Start with selected regions */
-       rs = selection->regions;
 
-       /* Add the entered_regionview, if requested */
-       if (allow_entered && entered_regionview) {
-               rs.add (entered_regionview);
+RegionSelection
+Editor::get_regions_for_action (bool check_edit_point)
+{
+       if (!check_edit_point) {
+               return selection->regions;
        }
 
-       if (allow_edit_position) {
+       if (_edit_point == EditAtMouse) {
+               if (entered_regionview == 0 || selection->regions.contains (entered_regionview)) {
+                       return selection->regions;
+               } else {
+                       RegionSelection rs;
+                       rs.add (entered_regionview);
+                       return rs;
+               }
+       }
 
-               TrackViewList tracks = selection->tracks;
+       /* We're using the edit point, but its not EditAtMouse */
 
-               /* tracks is currently the set of selected tracks; add any other tracks that
-                * have regions that are in the same edit-activated route group as one of
-                * our regions */
-               for (RegionSelection::iterator i = rs.begin (); i != rs.end(); ++i) {
+       /* Start with selected regions */
+       RegionSelection rs = selection->regions;
 
-                       RouteGroup* g = (*i)->get_time_axis_view().route_group ();
-                       if (g && g->is_active() && g->is_edit()) {
-                               tracks.add (axis_views_from_routes (g->route_list()));
-                       }
-                       
-               }
+       TrackViewList tracks = selection->tracks;
 
-               if (!tracks.empty()) {
-                       /* now find regions that are at the edit position on those tracks */
-                       nframes64_t const where = get_preferred_edit_position ();
-                       get_regions_at (rs, where, tracks);
+       /* Tracks is currently the set of selected tracks; add any other tracks that
+          have regions that are in the same edit-activated route group as one of
+          our regions.
+        */
+       for (RegionSelection::iterator i = rs.begin (); i != rs.end(); ++i) {
+               
+               RouteGroup* g = (*i)->get_time_axis_view().route_group ();
+               if (g && g->is_active() && g->is_edit()) {
+                       tracks.add (axis_views_from_routes (g->route_list()));
                }
+               
+       }
+       
+       if (!tracks.empty()) {
+               /* now find regions that are at the edit position on those tracks */
+               framepos_t const where = get_preferred_edit_position ();
+               get_regions_at (rs, where, tracks);
        }
+
+       return rs;
 }
 
 void
@@ -4801,16 +5037,6 @@ Editor::show_rhythm_ferret ()
        rhythm_ferret->present ();
 }
 
-void
-Editor::show_global_port_matrix (ARDOUR::DataType t)
-{
-       if (_global_port_matrix[t] == 0) {
-               _global_port_matrix[t] = new GlobalPortMatrixWindow (_session, t);
-       }
-
-       _global_port_matrix[t]->show ();
-}
-
 void
 Editor::first_idle ()
 {
@@ -5007,14 +5233,22 @@ Editor::timeaxisview_deleted (TimeAxisView *tv)
        }
 
        ENSURE_GUI_THREAD (*this, &Editor::timeaxisview_deleted, tv);
-               
 
+       RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (tv);
+       
        _routes->route_removed (tv);
 
        if (tv == entered_track) {
                entered_track = 0;
        }
-       
+
+       TimeAxisView::Children c = tv->get_child_list ();
+       for (TimeAxisView::Children::const_iterator i = c.begin(); i != c.end(); ++i) {
+               if (entered_track == i->get()) {
+                       entered_track = 0;
+               }
+       }
+
        /* remove it from the list of track views */
 
        TrackViewList::iterator i;
@@ -5026,7 +5260,6 @@ Editor::timeaxisview_deleted (TimeAxisView *tv)
        /* update whatever the current mixer strip is displaying, if revelant */
 
        boost::shared_ptr<Route> route;
-       RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (tv);
 
        if (rtav) {
                route = rtav->route ();
@@ -5089,12 +5322,13 @@ Editor::foreach_time_axis_view (sigc::slot<void,TimeAxisView&> theslot)
        }
 }
 
+/** Find a RouteTimeAxisView by the ID of its route */
 RouteTimeAxisView*
-Editor::get_route_view_by_id (PBD::ID& id)
+Editor::get_route_view_by_route_id (PBD::ID& id) const
 {
        RouteTimeAxisView* v;
 
-       for(TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+       for (TrackViewList::const_iterator i = track_views.begin(); i != track_views.end(); ++i) {
                if((v = dynamic_cast<RouteTimeAxisView*>(*i)) != 0) {
                        if(v->route()->id() == id) {
                                return v;
@@ -5164,6 +5398,16 @@ Editor::show_region_in_region_list ()
        _regions->selection_mapover (sigc::mem_fun (*this, &Editor::show_a_region));
 }
 
+void
+Editor::step_edit_status_change (bool yn)
+{
+        if (yn) {
+                start_step_editing ();
+        } else {
+                stop_step_editing ();
+        }
+}
+
 void
 Editor::start_step_editing ()
 {
@@ -5252,7 +5496,7 @@ Editor::horizontal_scroll_right_release ()
 void
 Editor::reset_x_origin_to_follow_playhead ()
 {
-       nframes64_t const frame = playhead_cursor->current_frame;
+       framepos_t const frame = playhead_cursor->current_frame;
 
        if (frame < leftmost_frame || frame > leftmost_frame + current_page_frames()) {
 
@@ -5268,7 +5512,7 @@ Editor::reset_x_origin_to_follow_playhead ()
                                                
                        if (frame < leftmost_frame) {
                                /* moving left */
-                               nframes64_t l = 0;
+                               framepos_t l = 0;
                                if (_session->transport_rolling()) {
                                        /* rolling; end up with the playhead at the right of the page */
                                        l = frame - current_page_frames ();
@@ -5322,7 +5566,7 @@ Editor::super_rapid_screen_update ()
 
        /* PLAYHEAD AND VIEWPORT */
 
-       nframes64_t const frame = _session->audible_frame();
+       framepos_t const frame = _session->audible_frame();
 
        /* There are a few reasons why we might not update the playhead / viewport stuff:
         *
@@ -5456,3 +5700,58 @@ Editor::show_editor_list (bool yn)
                the_notebook.hide();
        }
 }
+
+void
+Editor::change_region_layering_order (framepos_t position)
+{
+        if (!clicked_routeview) {
+                if (layering_order_editor) {
+                        layering_order_editor->hide ();
+                }
+               return;
+       }
+
+        boost::shared_ptr<Track> track = boost::dynamic_pointer_cast<Track> (clicked_routeview->route());
+
+        if (!track) {
+                return;
+        }
+
+       boost::shared_ptr<Playlist> pl = track->playlist();
+
+       if (!pl) {
+                return;
+        }
+                
+        if (layering_order_editor == 0) {
+                layering_order_editor = new RegionLayeringOrderEditor(*this);
+        }
+
+        layering_order_editor->set_context (clicked_routeview->name(), _session, pl, position);
+        layering_order_editor->maybe_present ();
+}
+
+void
+Editor::update_region_layering_order_editor (framepos_t frame)
+{
+       if (layering_order_editor && layering_order_editor->is_visible ()) {
+               change_region_layering_order (frame);
+       }
+}
+
+void
+Editor::setup_fade_images ()
+{
+       _fade_in_images[FadeLinear] = new Gtk::Image (get_icon_path (X_("crossfade-in-linear")));
+       _fade_in_images[FadeFast] = new Gtk::Image (get_icon_path (X_("crossfade-in-short-cut")));
+       _fade_in_images[FadeLogB] = new Gtk::Image (get_icon_path (X_("crossfade-in-slow-cut")));
+       _fade_in_images[FadeLogA] = new Gtk::Image (get_icon_path (X_("crossfade-in-fast-cut")));
+       _fade_in_images[FadeSlow] = new Gtk::Image (get_icon_path (X_("crossfade-in-long-cut")));
+
+       _fade_out_images[FadeLinear] = new Gtk::Image (get_icon_path (X_("crossfade-out-linear")));
+       _fade_out_images[FadeFast] = new Gtk::Image (get_icon_path (X_("crossfade-out-short-cut")));
+       _fade_out_images[FadeLogB] = new Gtk::Image (get_icon_path (X_("crossfade-out-slow-cut")));
+       _fade_out_images[FadeLogA] = new Gtk::Image (get_icon_path (X_("crossfade-out-fast-cut")));
+       _fade_out_images[FadeSlow] = new Gtk::Image (get_icon_path (X_("crossfade-out-long-cut")));
+}
+